U.S. patent application number 16/947316 was filed with the patent office on 2020-11-12 for implants, systems and methods of using the same.
This patent application is currently assigned to IGNITE ORTHOPEDICS LLC. The applicant listed for this patent is IGNITE ORTHOPEDICS LLC. Invention is credited to Luke AUSTIN, Derek J. CUFF, Brian C. HODOREK, Andrew JAWA, Anand M. MURTHI, Russ M. PARROTT, Matthew J. PURDY, Matthew J. SMITH, J. Michael WIATER.
Application Number | 20200352728 16/947316 |
Document ID | / |
Family ID | 1000004978489 |
Filed Date | 2020-11-12 |
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United States Patent
Application |
20200352728 |
Kind Code |
A1 |
HODOREK; Brian C. ; et
al. |
November 12, 2020 |
IMPLANTS, SYSTEMS AND METHODS OF USING THE SAME
Abstract
Implants, device, systems and methods for replacing an
articulation surface in a joint, for example, shoulder prostheses
with stemless humeral components or stemmed humeral components.
Methods for using the shoulder prostheses with stemless humeral
components or stemmed humeral components are also disclosed.
Inventors: |
HODOREK; Brian C.; (Winona
Lake, IN) ; PURDY; Matthew J.; (Winona Lake, IN)
; PARROTT; Russ M.; (Winona Lake, IN) ; WIATER; J.
Michael; (Beverly Hills, MI) ; MURTHI; Anand M.;
(Baltimore, MD) ; SMITH; Matthew J.; (Columbia,
MO) ; CUFF; Derek J.; (Venice, FL) ; JAWA;
Andrew; (Cambridge, MA) ; AUSTIN; Luke;
(Haddonfield, NJ) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
IGNITE ORTHOPEDICS LLC |
Warsaw |
IN |
US |
|
|
Assignee: |
IGNITE ORTHOPEDICS LLC
Warsaw
IN
|
Family ID: |
1000004978489 |
Appl. No.: |
16/947316 |
Filed: |
July 28, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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16799057 |
Feb 24, 2020 |
10722373 |
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16947316 |
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PCT/US2019/043983 |
Jul 29, 2019 |
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16799057 |
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62711500 |
Jul 28, 2018 |
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62711416 |
Jul 27, 2018 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61F 2002/30383
20130101; A61F 2/4014 20130101; A61F 2/30749 20130101; A61F
2002/30428 20130101; A61F 2002/4022 20130101 |
International
Class: |
A61F 2/40 20060101
A61F002/40; A61F 2/30 20060101 A61F002/30 |
Claims
1. An anchor for use in an orthopedic implant assembly, the anchor
comprising: a base including a proximal surface, an opposing distal
bone contacting surface, and a central opening; a first keel
extending across a diameter of the central opening of the base in a
direction opposite the proximal surface, and the first keel having
a length; a second keel extending from the base in a direction
opposite the bone contacting surface, and the second keel having a
length, wherein the second keel length is the same length or
smaller than the length of the first keel; a third keel extending
from the base in a direction opposite the bone contacting surface,
the third keel disposed medially of the first keel, and the third
keel including a length, wherein the length of the third keel is
the same length or smaller than the length of the first keel; and a
fourth keel extending from the base in a direction opposite the
bone contacting surface, the fourth keel disposed laterally of the
first keel and the fourth keel including a length, wherein the
length of the fourth keel is the same length or smaller than the
length of the first keel; wherein each keel further comprises: a
proximal end; and a distal end; wherein the base is disposed at a
constant angle relative to the proximal end of each keel.
2. The anchor of claim 1, wherein said first keel comprises a
plurality of bone engaging fins extending from said first keel.
3. The anchor of claim 2, wherein said first keel has a constant
width in a direction perpendicular to said fins of said first
keel.
4. The anchor of claim 1, wherein said second keel comprises a
plurality of bone engaging fins extending from said second
keel.
5. The anchor of claim 1, wherein said third keel comprises a
plurality of bone engaging fins extending from said third keel.
6. The anchor of claim 1, wherein said fourth keel comprises a
plurality of bone engaging fins extending from said fourth
keel.
7. The anchor of claim 1, wherein each of said keels comprises a
plurality of bone engaging fins extending from said keels and
wherein said fins of said third keel, fourth keel, and third keel
are oriented perpendicularly relative to said fins of said first
keel.
8. The anchor of claim 7, wherein said first keel has a constant
width in a direction perpendicular to said fins of said first
keel.
9. The anchor of claim 1, wherein said first keel length is no more
than 45 mm from said bone contacting surface of said base.
10. The anchor of claim 1, wherein said first keel length is no
more than 40 mm from said bone contacting surface of said base.
11. The anchor of claim 1, wherein said first keel length is no
more than 35 mm from said bone contacting surface of said base.
12. The anchor of claim 1, wherein said first keel length is no
more than 30 mm from said bone contacting surface of said base.
13. An orthopedic implant assembly, said assembly comprising: an
anchor for use in an orthopedic implant assembly, said anchor
adapted to be inserted into a humeral bone, said anchor comprising:
a base, said base having a proximal surface, an opposing distal
bone contacting surface, and an open center; a first keel, said
first keel extending across the diameter of said open center of
said base, said first keel extending from said base in a direction
opposite said proximal surface; a second keel, said second keel
extending from said base in a direction opposite said bone
contacting surface, said second keel; a third keel, said third keel
extending from said base in a direction opposite said bone
contacting surface, said third keel disposed medially of said first
keel; a fourth keel, said fourth keel extending from said base in a
direction opposite said bone contacting surface, said fourth keel
disposed laterally of said first keel, wherein each keel further
comprises a proximal end and a distal end and said base is disposed
at a constant angle relative to the proximal end of each said keel;
and a humeral head, said humeral head attached to said proximal
surface of said anchor.
14. The anchor of claim 13, wherein said first keel comprises a
plurality of bone engaging fins extending from said first keel.
15. The anchor of claim 14, wherein said first keel has a constant
width in a direction perpendicular to said fins of said first
keel.
16. The anchor of claim 13, wherein said second keel comprises a
plurality of bone engaging fins extending from said second
keel.
17. The anchor of claim 13, wherein said third keel comprises a
plurality of bone engaging fins extending from said third keel.
18. The anchor of claim 13, wherein said fourth keel comprises a
plurality of bone engaging fins extending from said fourth
keel.
19. The anchor of claim 13, wherein each of said keels comprises a
plurality of bone engaging fins extending from said keels and
wherein said fins of said third keel, fourth keel, and third keel
are oriented perpendicularly relative to said fins of said first
keel.
20. The anchor of claim 13, wherein said first keel has a constant
width in a direction perpendicular to said fins of said first
keel.
21. An orthopedic implant assembly, said assembly comprising: an
anchor for use in an orthopedic implant assembly, said anchor
adapted to be inserted into a humeral bone, said anchor comprising:
a base, said base having a proximal surface, an opposing distal
bone contacting surface, and an open center; a first keel, said
first keel extending across the diameter of said open center of
said base, said first keel extending from said base in a direction
opposite said proximal surface; a second keel, said second keel
extending from said base in a direction opposite said bone
contacting surface, said second keel; a third keel, said third keel
extending from said base in a direction opposite said bone
contacting surface, said third keel disposed medially of said first
keel; a fourth keel, said fourth keel extending from said base in a
direction opposite said bone contacting surface, said fourth keel
disposed laterally of said first keel; wherein each keel further
comprises a proximal end and a distal end and said base is disposed
at a constant angle relative to the proximal end of each said keel;
and an articular liner, said articular liner having a concave
articular surface, said liner attached to said proximal surface of
said anchor.
22. The anchor of claim 21, wherein said first keel length is no
more than 45 mm from said bone contacting surface of said base.
23. The anchor of claim 21, wherein said first keel length is no
more than 40 mm from said bone contacting surface of said base.
24. The anchor of claim 21, wherein said first keel length is no
more than 35 mm from said bone contacting surface of said base.
25. The anchor of claim 21, wherein said first keel length is no
more than 30 mm from said bone contacting surface of said base.
26. The anchor of claim 21, wherein said first keel comprises a
plurality of bone engaging fins extending from said first keel.
27. The anchor of claim 26, wherein said first keel has a constant
width in a direction perpendicular to said fins of said first
keel.
28. The anchor of claim 21, wherein said second keel comprises a
plurality of bone engaging fins extending from said second
keel.
29. The anchor of claim 21, wherein said third keel comprises a
plurality of bone engaging fins extending from said third keel.
30. The anchor of claim 21, wherein said fourth keel comprises a
plurality of bone engaging fins extending from said fourth
keel.
31. The anchor of claim 21, wherein each of said keels comprises a
plurality of bone engaging fins extending from said keels and
wherein said fins of said third keel, fourth keel, and third keel
are oriented perpendicularly relative to said fins of said first
keel.
32. The anchor of claim 31, wherein said first keel has a constant
width in a direction perpendicular to said fins of said first keel.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of U.S. patent
application Ser. No. 16/799,057 filed Feb. 24, 2020 and entitled
Implants, Systems and Methods of Using Same, which issues as U.S.
Pat. No. 10,722,373 on Jul. 28, 2020, which is a continuation of
PCT/US2019/043983 filed Jul. 29, 2019 and entitled Implants,
Systems and Methods of Using Same, which claims priority benefit
under 35 U.S.C. .sctn. 119(e) of U.S. provisional application No.
62/711,416 filed Jul. 27, 2018 and entitled Stemless Orthopedic
Humeral Implant and U.S. Provisional Application No. 62/711,500
filed Jul. 28, 2018 and entitled Orthopedic Shoulder Implant, which
are incorporated herein by reference in their entireties.
FIELD OF THE INVENTION
[0002] The present invention relates generally to general surgery,
orthopedic implants used for replacing an articulation surface in a
joint, such as shoulder prostheses. More specifically, but not
exclusively, the present invention relates to shoulder prostheses
with stemless humeral components and stemmed humeral components, as
well as methods for using the same.
BACKGROUND OF THE INVENTION
[0003] Shoulder replacement is a surgical procedure in which all or
part of the glenohumeral joint is replaced by a prosthetic implant.
Such joint replacement surgery generally is conducted to relieve
arthritis pain or fix severe physical joint damage.
[0004] Shoulder replacement surgery is an option for treatment of
severe arthritis of the shoulder joint. Arthritis is a condition
that affects the cartilage of the joints. As the cartilage lining
wears away, the protective lining between the bones is lost. When
this happens, painful bone-on-bone arthritis develops. Severe
shoulder arthritis is quite painful, and it can cause restriction
of motion. While this may be tolerated with some medications and
lifestyle adjustments, there may come a time when surgical
treatment is necessary.
[0005] There are a few major approaches to access the shoulder
joint. The first is the deltopectoral approach, which saves the
deltoid, but requires the subscapularis to be cut. The second is
the trans deltoid approach, which provides a straight on approach
at the glenoid. However, during this approach the deltoid is put at
risk for potential damage.
[0006] Shoulder replacement, also known as shoulder arthroplasty or
glenohumeral arthroplasty, was pioneered by the French surgeon
Jules Emile Pean in 1893. His procedure consisted of physically
smoothing the shoulder joint and implanting platinum and rubber
materials. The next notable case in the evolution of shoulder
replacement procedures was in 1955 when Charles Neer conducted the
first hemiarthroplasty, essentially replacing only the humeral
head, leaving the natural shoulder socket, or glenoid, intact. This
procedure grew exponentially in popularity as time progressed;
however, patients often developed cartilage loss on their glenoid
surface as well, leading to pain and glenoid erosion. This prompted
the development of a procedure to replace not only the humeral
component, but the glenoid component as well.
[0007] Throughout the development of the procedures, it became well
accepted that the rotator cuff muscles were essential to producing
the best outcomes in terms of strength, range of motion, and a
decrease in pain. In addition to this finding, physical constraints
of the normal ball-and-socket anatomy of the shoulder limited most
developments in one way or another. For example, a heavily
constrained system limited range of motion and the inherent anatomy
of the glenoid proved difficult to cement prosthetics and fixate
components without fracturing it. These challenges and high rates
of failure led to the development of the reverse total shoulder
arthroplasty to overcome the limitations imposed by the natural
shoulder anatomy.
[0008] The 1970s saw an exponential increase in surgical approaches
using this methodology, and the number and variation of surgical
techniques are many. However, in 1985 Paul Grammont emerged with a
superior technique that is the basis for most reverse shoulder
replacement procedures today.
[0009] In traditional total shoulder arthroplasty, the approach
begins with separating the deltoid muscle from the pectoral
muscles, facilitating access to the shoulder (glenohumeral) joint
through a relatively nerve free passageway. The shoulder joint is
initially covered by the rotator cuff muscles (subscapularis,
supraspinatus, infraspinatus & teres minor) and the joint
capsule (glenohumeral ligaments). Typically, a single rotator cuff
muscle is identified and cut to allow direct access to the shoulder
joint. At this point, the surgeon can remove the arthritic portions
of the joint and then secure the ball and socket prostheses within
the joint.
[0010] The development of safer, more effective techniques has led
to increased use of reverse total shoulder arthroplasty. Reverse
total shoulder arthroplasties are typically indicated when the
rotator cuff muscles are severely damaged.
[0011] Generally, a stemless shoulder prosthesis includes a
metaphysical fixation device for fixing the prosthesis to a
resected humerus bone. The fixation device includes a base portion
and anchoring means, with a humeral head being fixed to the base
portion, for example through a taper or screw connection.
[0012] Unlike shoulder prostheses having a stem, also referred to
as stemmed shoulder prostheses, stemless shoulder prostheses do not
make use of the humeral canal in the diaphysis of the humerus. In
other words, stemless shoulder prostheses do not rely on their
fixation in said canal and an anchoring means extending deep into
said canal is therefore not provided. This bears the advantage that
it is in general not necessary to prepare the humeral canal for the
insertion of the prosthesis and consequently bone is conserved.
[0013] Moreover, while conventional shoulder prosthetics used
during shoulder arthroplasty adequately provide the patient with an
increased range of motion, conventional shoulder prosthetics
require insertion of a stem into the humeral canal of the humerus,
thereby increasing the overall weight, size, and cost of the
humeral component. Furthermore, because the surgeon is required to
insert the stem of the humeral component into the humeral canal,
the surgical procedure is somewhat complex, as the surgeon is first
required to resect the proximal end of the humerus and subsequently
ream the humeral canal prior to inserting the stem of the humeral
component into the humeral canal. Increasing the complexity of the
joint-replacement surgery increases the time in which the surgeon
must spend in performing the procedure and therefore increases the
overall cost of the procedure. Finally, requiring insertion of the
stem into the humeral component results in additional bone removal,
thereby increasing trauma and post-operative pain. It is further
desirable to have a stemmed humeral implant that is adapted to
follow the same surgical implant path as a stemless implant within
the same product family.
[0014] What is needed in the art is a shoulder implant that
improves upon prior art devices by providing design advantages that
result in less bone loss, a simpler procedure, and greater initial
and long-term implant fixation.
SUMMARY OF THE INVENTION
[0015] Aspects of the present invention provide shoulder prostheses
with stemless humeral components and stemmed humeral components.
The present invention also provides for methods for using the
shoulder prostheses.
[0016] In one aspect, provided herein is an implant system that
includes an anchor member, an articulating portion, and a coupling
member with a first end and a second end. The articulating portion
being coupled to the first end of the coupling member and the
anchor member being coupled to the second end of the coupling
member.
[0017] In another aspect, provided herein is an anchor member
including a base, a circumferential groove, a central member and at
least one support member. The base being positioned at a first end
of the anchor member. The circumferential groove extending into the
base from the first end of the anchor member. The central member
positioned within the base and the circumferential groove. The at
least one support member coupled to at least a portion of the
central member at a first end and at least a portion of an interior
surface of the base on a second end.
[0018] In yet another aspect, provided herein are surgical methods
for inserting the implant systems.
[0019] These, and other objects, features and advantages of this
invention will become apparent from the following detailed
description of the various aspects of the invention taken in
conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
[0020] The accompanying drawings, which are incorporated in and
constitute a part of the specification, illustrate embodiments of
the invention and together with the detailed description herein,
serve to explain the principles of the invention. The drawings are
only for purposes of illustrating preferred embodiments and are not
to be construed as limiting the invention. It is emphasized that,
in accordance with the standard practice in the industry, various
features are not drawn to scale. In fact, the dimensions of the
various features may be arbitrarily increased or reduced for
clarity of discussion. The foregoing and other objects, features
and advantages of the invention are apparent from the following
detailed description taken in conjunction with the accompanying
drawings in which:
[0021] FIG. 1 is a first perspective view of an embodiment of a
stemless humeral implant, in accordance with an aspect of the
present invention;
[0022] FIG. 2 is a second perspective view of the stemless humeral
implant of FIG. 1, in accordance with an aspect of the present
invention;
[0023] FIG. 3 is a first side view of the stemless humeral implant
of FIG. 1, in accordance with an aspect of the present
invention;
[0024] FIG. 4 is a second side view of the stemless humeral implant
of FIG. 1, in accordance with an aspect of the present
invention;
[0025] FIG. 5 is a top view of the stemless humeral implant of FIG.
1, in accordance with an aspect of the present invention;
[0026] FIG. 6 is a bottom view of the stemless humeral implant of
FIG. 1, in accordance with an aspect of the present invention;
[0027] FIG. 7 is a side, cross-sectional view of the stemless
humeral implant of FIG. 1 taken along line 7-7 in FIG. 5, in
accordance with an aspect of the present invention;
[0028] FIG. 8 is a perspective, cross-sectional view of the
stemless humeral implant of FIG. 1 taken along line 8-8 in FIG. 5,
in accordance with an aspect of the present invention;
[0029] FIG. 9 is a first perspective view of an implant system
including the stemless humeral implant of FIG. 1, in accordance
with an aspect of the present invention;
[0030] FIG. 10 is a second perspective view of the implant system
of FIG. 9, in accordance with an aspect of the present
invention;
[0031] FIG. 11 is a side view of the implant system of FIG. 9 after
removal of the guide pin, in accordance with an aspect of the
present invention;
[0032] FIG. 12 is a cross-sectional view of the implant system of
FIG. 9 taken along line 12-12 in FIG. 10, in accordance with an
aspect of the present invention; and
[0033] FIG. 13 is a first perspective, exploded view of the implant
system of FIG. 9, in accordance with an aspect of the present
invention;
[0034] FIG. 14 is a second perspective, exploded view of the
implant system of FIG. 9, in accordance with an aspect of the
present invention;
[0035] FIG. 15 is a first side, exploded view of implant system of
FIG. 9, in accordance with an aspect of the present invention;
[0036] FIG. 16 is a second side, exploded view of the implant
system of FIG. 9, in accordance with an aspect of the present
invention;
[0037] FIG. 17 is a first perspective view of another embodiment of
an implant system, in accordance with an aspect of the present
invention;
[0038] FIG. 18 is a second perspective view of the implant system
of FIG. 17, in accordance with an aspect of the present
invention;
[0039] FIG. 19 is a side view of the implant system of FIG. 17, in
accordance with an aspect of the present invention;
[0040] FIG. 20 is a cross-sectional view of the implant system of
FIG. 17 taken along line 20-20 in FIG. 18, in accordance with an
aspect of the present invention;
[0041] FIG. 21 is an exploded, first perspective view of the
implant system of FIG. 17, in accordance with an aspect of the
present invention;
[0042] FIG. 22 is exploded, second perspective view of the implant
system of FIG. 17, in accordance with an aspect of the present
invention;
[0043] FIG. 23 is an exploded, side view of the implant system of
FIG. 17, in accordance with an aspect of the present invention;
[0044] FIG. 24 is a side cross-sectional view of the implant system
of FIG. 17 taken along line 24-24 in FIG. 18, in accordance with an
aspect of the present invention;
[0045] FIG. 25 is a side view of a base for an embodiment of a
stemless humeral implant, in accordance with an aspect of the
present invention;
[0046] FIG. 26 is a side cross-sectional view of the base of FIG.
25 taken along line 26-26 in FIG. 30, in accordance with an aspect
of the present invention;
[0047] FIG. 27 is a front view of the base of FIG. 25, in
accordance with an aspect of the present invention;
[0048] FIG. 28 is a rear view of the base of FIG. 25, in accordance
with an aspect of the present invention;
[0049] FIG. 29 is a front isometric view of the base of FIG. 25, in
accordance with an aspect of the present invention;
[0050] FIG. 30 is a top isometric view of the base of FIG. 25, in
accordance with an aspect of the present invention;
[0051] FIG. 31 is a side view of a stemless shoulder implant
assembly including the base of FIG. 25, in accordance with an
aspect of the present invention;
[0052] FIG. 32 is a side cross-sectional view of the stemless
shoulder implant assembly of FIG. 31, in accordance with an aspect
of the present invention;
[0053] FIG. 33 is a front view of the stemless shoulder implant
assembly of FIG. 31, in accordance with an aspect of the present
invention;
[0054] FIG. 34 is a rear view of the stemless shoulder implant
assembly of FIG. 31, in accordance with an aspect of the present
invention;
[0055] FIG. 35 is a top view of the stemless shoulder implant
assembly of FIG. 31, in accordance with an aspect of the present
invention;
[0056] FIG. 36 is a bottom view of the stemless shoulder implant
assembly of FIG. 31, in accordance with an aspect of the present
invention;
[0057] FIG. 37 is a side, cross-sectional view of the stemless
shoulder implant assembly of FIG. 31 implanted in a bone, in
accordance with an aspect of the present invention;
[0058] FIG. 38 is a side view of an embodiment of a reverse
stemless shoulder implant assembly, in accordance with an aspect of
the present invention;
[0059] FIG. 39 is a side cross-sectional view of the reverse
stemless shoulder implant assembly of FIG. 38, in accordance with
an aspect of the present invention;
[0060] FIG. 40 is a front view of the reverse stemless shoulder
implant assembly of FIG. 38, in accordance with an aspect of the
present invention;
[0061] FIG. 41 is a rear view of the reverse stemless shoulder
implant assembly of FIG. 38, in accordance with an aspect of the
present invention;
[0062] FIG. 42 is a top view of the reverse stemless shoulder
implant assembly of FIG. 38, in accordance with an aspect of the
present invention;
[0063] FIG. 43 is a bottom view of the reverse stemless shoulder
implant assembly of FIG. 38, in accordance with an aspect of the
present invention;
[0064] FIG. 44 is a side, cross-sectional view of the reverse
stemless shoulder implant assembly of FIG. 38 implanted in a bone,
in accordance with an aspect of the present invention;
[0065] FIG. 45 is a first perspective view of an embodiment of a
stemmed humeral implant, in accordance with an aspect of the
present invention;
[0066] FIG. 46 is a second perspective view of the stemmed humeral
implant of FIG. 45, in accordance with an aspect of the present
invention;
[0067] FIG. 47 is a medial view of the stemmed humeral implant of
FIG. 45, in accordance with an aspect of the present invention;
[0068] FIG. 48 is a first side view of the stemmed humeral implant
of FIG. 45, in accordance with an aspect of the present
invention;
[0069] FIG. 49 is a lateral view of the stemmed humeral implant of
FIG. 45, in accordance with an aspect of the present invention;
[0070] FIG. 50 is a second side view of the stemmed humeral implant
of FIG. 45, in accordance with an aspect of the present
invention;
[0071] FIG. 51 is a top view of the stemmed humeral implant of FIG.
45, in accordance with an aspect of the present invention;
[0072] FIG. 52 is a bottom view of the stemmed humeral implant of
FIG. 45, in accordance with an aspect of the present invention;
[0073] FIG. 53 is a cross-sectional view of the stemmed humeral
implant of FIG. 45 taken along line 53-53 in FIG. 51, in accordance
with an aspect of the present invention;
[0074] FIG. 54 is a cross-sectional view of the stemmed humeral
implant of FIG. 45 taken along line 54-54 in FIG. 50, in accordance
with an aspect of the present invention;
[0075] FIG. 55 is a first perspective view of a stemmed implant
system including the stemmed humeral implant of FIG. 45, in
accordance with an aspect of the present invention;
[0076] FIG. 56 is a second perspective view of the stemmed implant
system of FIG. 45, in accordance with an aspect of the present
invention;
[0077] FIG. 57 is a first side view of the stemmed implant system
of FIG. 45, in accordance with an aspect of the present
invention;
[0078] FIG. 58 is a medial view of the stemmed implant system of
FIG. 45, in accordance with an aspect of the present invention;
[0079] FIG. 59 is a second side view of the stemmed implant system
of FIG. 45, in accordance with an aspect of the present
invention;
[0080] FIG. 60 is a lateral view of the stemmed implant system of
FIG. 45, in accordance with an aspect of the present invention;
[0081] FIG. 61 is a top view of the stemmed implant system of FIG.
45, in accordance with an aspect of the present invention;
[0082] FIG. 62 is a bottom view of the stemmed implant system of
FIG. 45, in accordance with an aspect of the present invention;
[0083] FIG. 63 is a cross-sectional view of the stemmed implant
system of FIG. 45 taken along line 63-63 in FIG. 61, in accordance
with an aspect of the present invention;
[0084] FIG. 64 is an exploded first perspective view of the stemmed
implant system of FIG. 45, in accordance with an aspect of the
present invention;
[0085] FIG. 65 is an exploded second perspective view of the
stemmed implant system of FIG. 45, in accordance with an aspect of
the present invention;
[0086] FIG. 66 is an exploded side view of the stemmed implant
system of FIG. 45, in accordance with an aspect of the present
invention;
[0087] FIG. 67 is an exploded medial view of the stemmed implant
system of FIG. 45, in accordance with an aspect of the present
invention;
[0088] FIG. 68 is a first perspective view of another embodiment of
an implant system, in accordance with an aspect of the present
invention;
[0089] FIG. 69 is a second perspective view of the implant system
of FIG. 68, in accordance with an aspect of the present
invention;
[0090] FIG. 70 is a first side view of the implant system of FIG.
68, in accordance with an aspect of the present invention;
[0091] FIG. 71 is a medial view of the implant system of FIG. 68,
in accordance with an aspect of the present invention;
[0092] FIG. 72 is a second side view of the implant system of FIG.
68, in accordance with an aspect of the present invention;
[0093] FIG. 73 is a lateral view of the implant system of FIG. 68,
in accordance with an aspect of the present invention;
[0094] FIG. 74 is a top view of the implant system of FIG. 68, in
accordance with an aspect of the present invention;
[0095] FIG. 75 is a bottom view of the implant system of FIG. 68,
in accordance with an aspect of the present invention;
[0096] FIG. 76 is a cross-sectional view of the implant system of
FIG. 68 taken along line 76-76 in FIG. 74, in accordance with an
aspect of the present invention;
[0097] FIG. 77 is an exploded first perspective view of the implant
system of FIG. 68, in accordance with an aspect of the present
invention;
[0098] FIG. 78 is an exploded second perspective view of the
implant system of FIG. 68, in accordance with an aspect of the
present invention;
[0099] FIG. 79 is an exploded side view of the implant system of
FIG. 68, in accordance with an aspect of the present invention;
[0100] FIG. 80 is an exploded medial view of the implant system of
FIG. 68, in accordance with an aspect of the present invention;
[0101] FIG. 81 is a side view of an embodiment of a humeral stem,
in accordance with an aspect of the present invention;
[0102] FIG. 82 is a side cross-sectional view of the humeral stem
of FIG. 81, in accordance with an aspect the present invention;
[0103] FIG. 83 is a medial isometric view of the humeral stem of
FIG. 81, in accordance with an aspect the present invention;
[0104] FIG. 84 is a lateral isometric view of the humeral stem of
FIG. 81, in accordance with an aspect the present invention;
[0105] FIG. 85 is a top isometric view of the humeral stem of FIG.
81, in accordance with an aspect the present invention;
[0106] FIG. 86 is a bottom isometric view of the humeral stem of
FIG. 81, in accordance with an aspect the present invention;
[0107] FIG. 87 is a side view of an embodiment of a shoulder
implant assembly including the humeral stem of FIG. 81, in
accordance with an aspect the present invention;
[0108] FIG. 88 is a side cross-sectional view of the shoulder
implant assembly of FIG. 87, in accordance with an aspect of the
present invention;
[0109] FIG. 89 is a lateral view of the shoulder implant assembly
of FIG. 87, in accordance with an aspect of the present
invention;
[0110] FIG. 90 is a top isometric view of the shoulder implant
assembly of FIG. 87, in accordance with an aspect of the present
invention;
[0111] FIG. 91 is a bottom isometric view of the shoulder implant
assembly of FIG. 87, in accordance with an aspect of the present
invention;
[0112] FIG. 92 is a side view of another reverse shoulder implant
assembly, in accordance with an aspect of the present
invention;
[0113] FIG. 93 is a side cross-sectional view of the reverse
shoulder implant assembly of FIG. 92, in accordance with an aspect
of the present invention;
[0114] FIG. 94 is a medial view of the reverse shoulder implant
assembly of FIG. 92, in accordance with an aspect of the present
invention;
[0115] FIG. 95 is a lateral view of the reverse shoulder implant
assembly of FIG. 92, in accordance with an aspect of the present
invention;
[0116] FIG. 96 is a top isometric view of the reverse shoulder
implant assembly of FIG. 92, in accordance with an aspect of the
present invention;
[0117] FIG. 97 is a bottom isometric view of the reverse shoulder
implant assembly of FIG. 92, in accordance with an aspect of the
present invention;
[0118] FIG. 98 is a first isometric view of the reverse shoulder
implant assembly of FIG. 92 implanted in a bone, in accordance with
an aspect of the present invention;
[0119] FIG. 99 is a second isometric view of the reverse shoulder
implant assembly of FIG. 92 implanted in a bone, in accordance with
an aspect of the present invention;
[0120] FIG. 100 is a side view of the reverse shoulder implant
assembly of FIG. 92 implanted in a bone, in accordance with an
aspect of the present invention;
[0121] FIG. 101 is a medial view of the reverse shoulder implant
assembly of FIG. 92 implanted in a bone, in accordance with an
aspect of the present invention; and
[0122] FIG. 102 is a lateral view of the reverse shoulder implant
assembly of FIG. 92 implanted in a bone, in accordance with an
aspect of the present invention.
DETAILED DESCRIPTION FOR CARRYING OUT THE INVENTION
[0123] Generally stated, disclosed herein are shoulder prostheses
with stemless humeral components and stemmed humeral components.
Further, surgical methods for using the shoulder prostheses are
discussed.
[0124] In this detailed description and the following claims, the
words proximal, distal, anterior, posterior, medial, lateral,
superior and inferior are defined by their standard usage for
indicating a particular part of a bone or implant according to the
relative disposition of the natural bone or directional terms of
reference. For example, "proximal" means the portion of a device or
implant nearest the torso, while "distal" indicates the portion of
the device or implant farthest from the torso. As for directional
terms, "anterior" is a direction towards the front side of the
body, "posterior" means a direction towards the back side of the
body, "medial" means towards the midline of the body, "lateral" is
a direction towards the sides or away from the midline of the body,
"superior" means a direction above and "inferior" means a direction
below another object or structure.
[0125] As used herein, the word "exemplary" or "illustrative" means
"serving as an example, instance, or illustration." Any
implementation described herein as "exemplary" or "illustrative" is
not necessarily to be construed as preferred or advantageous over
other implementations. Moreover, in the present description, the
terms "upper", "lower", "left", "rear", "right", "front",
"vertical", "horizontal", and derivatives thereof shall relate to
the invention as oriented in the first figure of each
embodiment.
[0126] Similarly, positions or directions may be used herein with
reference to anatomical structures or surfaces. For example, as the
current implants, devices, systems and methods are described herein
with reference to use with the bones of the shoulder, the bones of
the shoulder and upper arm may be used to describe the surfaces,
positions, directions or orientations of the implants, devices,
systems and methods. Further, the implants, devices, systems and
methods, and the aspects, components, features and the like
thereof, disclosed herein are described with respect to one side of
the body for brevity purposes. However, as the human body is
relatively symmetrical or mirrored about a line of symmetry
(midline), it is hereby expressly contemplated that the implants,
devices, systems and methods, and the aspects, components, features
and the like thereof, described and/or illustrated herein may be
changed, varied, modified, reconfigured or otherwise altered for
use or association with another side of the body for a same or
similar purpose without departing from the spirit and scope of the
invention. For example, the implants, devices, systems and methods,
and the aspects, components, features and the like thereof,
described herein with respect to the right shoulder may be mirrored
so that they likewise function with the left shoulder and vice
versa. Further, the implants, devices, systems and methods, and the
aspects, components, features and the like thereof, disclosed
herein are described with respect to the shoulder for brevity
purposes, but it should be understood that the implants, devices,
systems and methods may be used with other bones of the body having
similar structures, for example the lower extremity, and more
specifically, with the bones of the ankle, foot, and leg.
[0127] Referring to the drawings, wherein like reference numerals
are used to indicate like or analogous components throughout the
several views, and with particular reference to FIGS. 1-8, there is
illustrated a stemless humeral component or anchor 110 of a
stemless implant system 100. The stemless implant system 100
includes a stemless humeral component or anchor 110, an
articulating portion 150, and a coupling member 170. The humeral
component 110 has a first end 112 and a second end 114. The first
end 112 of the humeral component 110 has a first width and the
second end of the humeral component 110 has a second width. The
first width may be for example larger than the second width. The
humeral component may include a base 116. The base 116 may include
a recess or circumferential groove 118 extending into the base 116
from the first end 112 towards the second end 114. The groove 118
may be, for example, tapered as the groove 118 extends from a first
end 112 into the base 116 of the anchor member 110, as shown in
FIGS. 7, 8, 20 and 24. The recess 118 may form an interior lip 120
of the base 116. The base 116 may also be configured to mate out at
the periphery when inserted into a patient.
[0128] With continued reference to FIGS. 1-16, the humeral
component 110 may also include a central number 122 positioned
within the base 116. The central member 122 may include a through
hole 124 extending through the humeral component 110 from the first
end 112 to the second end 114. The through hole 124 may include a
first portion 126, a threaded portion 128, and a second portion
130. The first portion 126 may extend from the first end 112 toward
the second end 114. The second portion 130 may extend from the
second end 114 toward the first end 112. The threaded portion 128
may be positioned between the first portion 126 and the second
portion 130. The first portion 126 may have, for example, a larger
diameter than the second portion 130. The threaded portion 128 may
have, for example, a diameter larger than the diameter of the
second portion 130 and smaller than the diameter of the first
portion 126.
[0129] The humeral component 110 may also include arms or support
members 132 extending between an exterior surface of the central
number 122 and an interior surface of the lips 120 of the base 116,
as shown in FIGS. 1-8 and 14. The base 116 of the humeral component
110 may also include windows or openings 134 extending through the
base portion 116 from the first end 112 of the humeral component
110 toward the second end 114. The openings 134 may be, for
example, positioned between each of the arms 132. As shown in FIGS.
1, 5, and 14, the humeral component 110 may include, for example,
four arms. The base 116 may also include a plurality of fastener
openings 142 extending through the base 116 from the first end 112
toward the second end 114. The plurality of openings 142 may be
positioned between an exterior surface of the base 116 and the
recess 118. The plurality of fastener openings 142 may be, for
example, configured or sized and shaped to receive fasteners, such
as, sutures and the like.
[0130] In addition, the humeral component 110 may include legs or
extension members 136 extending away from a bottom surface of the
base 116 toward the second end 114 of the humeral component 110. A
first end of each leg 136 is coupled to the base 116 and the second
end of each leg 136 is coupled to the exterior surface of the
central member 122 at a distal end. The legs 136 may be, for
example, curved or arced as they extend from a bottom surface of
the base 116 to the second end 114 of the humeral component 110.
Each leg 136 may be coupled to the base 116 and an arm 132 by a
base member 138. The base members 138 may each have a width larger
than the width of the coupled leg 136. The legs 136 may be, for
example, equally spaced apart from each other circumferentially
around the base 116 of the humeral component 110. A cutout 140 may
extend through each leg 136 below or distal to a corresponding arm
132. The cutouts 140 may be, for example, position perpendicular to
the openings 134.
[0131] Referring now to FIGS. 9-16, the orthopedic implant assembly
or stemless implant system 100 is shown. As shown in FIGS. 12-16,
the articulating portion 150 includes an articulating surface 152
and a coupling surface or bottom surface 154 positioned opposite
the articulating surface 152. The articulating surface 152 is a
convex articulating surface. The coupling surface 154 may include,
for example, a recessed region 156 extending into the bottom
surface 154 toward the articulating surface 152. The inset recessed
region 156 forms an outer edge 158 surrounding the recessed region
156. The recessed region 156 may be, for example, sized and shaped
to receive the base 116 of the stemless humeral component 110. The
articulating portion 150 may also include an opening 160 extending
into the articulating portion 150 from the bottom surface 154. A
lip 162 may surround the opening 160, as shown in FIG. 13. The lip
162 may include at least one slot or anti-rotation slot 164 inset
into the lip 162. The at least one slot 164 may be, for example,
four slots 164.
[0132] With continued reference to FIGS. 9-16, the coupling member
170 may include a first end 132 and a second end 174 positioned
opposite the first end 132. Coupling member 170 may include a first
portion or base member 176 coupled to a second portion or extension
number 182. The second portion 182 extends away from a bottom
surface 178 of the base member 176. The first portion 176 may have
a first diameter larger than a second diameter of the second
portion 182. The coupling member 170 may also include, for example,
an anti-rotation protrusion or protrusion 180 extending away from
an exterior surface of the base member 176. The coupling member 170
may also include a through hole or threaded opening 184 extending
through the coupling member 170 from the first end 172 to the
second end 174.
[0133] Referring now to FIG. 12, a cross-section of an assembled
stemless implant system 100 is shown. The first end 172 of the
coupling member 170 is inserted into the opening 160 of the
articulating portion 150. The alignment protrusion 180 may be, for
example, aligned with at least one slot 164 and inserted into a
slot 164 of the at least one slot 164 to prevent rotation of the
articulating portion 150 with respect to the coupling member 170.
The coupling member 170 may be coupled to the articulating portion
150, for example, with a fastener (not shown), a friction fit, such
as, a taper fit, and alternative known methods for coupling
articulating portion 152 and anchor 110. The base 116 of the
humeral component 110 may be, for example, received within the
recessed region 156 of the articulating portion 150, as shown is
FIG. 12.
[0134] Referring now to FIGS. 17-24 and with continued reference to
FIGS. 1-8, a reverse orthopedic implant assembly or a reverse
stemless implant system 200 is shown. The reverse implant system
200 may have a first end 202 at a second end 204. The reverse
implant system 200 may include, for example, a stemless humeral
component or anchor 110, a spacer or coupling member 210, and a
socket number 240. The humeral component 110 is as described with
reference to FIGS. 1-8 and will not be described again here for
brevity's sake.
[0135] As shown in FIGS. 20-24, the coupling member 210 includes a
first end or upper surface 212 and a second end or lower surface
214. The coupling member 210 includes a base member 216, an
extension number 224, and a protrusion or extension number 232. The
extension member 224 extends away from a bottom surface of the base
number 216 and the protrusion 232 extends away from the extension
number 224. The base member 216 includes a recessed region 218
inset into the coupling member 210 from the first end 212 and
forming an interior side wall surrounding the recessed region 218.
The interior side wall may include, for example, a circumferential
groove 220 extending from the recessed region 218 toward an
exterior surface of the base member 216. The circumferential groove
220 may receive, for example, a coupling element 260, such as, an
O-ring, as shown in FIG. 20. At least a portion of the recessed
region 218 may be, for example, a flat surface 222 as best seen in
FIGS. 20 and 24. The flat surface 222 may extend from the interior
side wall toward a center of the base member 216.
[0136] Referring now to FIGS. 20 and 22-24, the extension number
224 includes a rim 226 extending away from a bottom surface of the
base member 216. The rim 226 surrounds a bottom surface 228 of the
extension member 224. The bottom surface 228 may be, for example, a
flat surface for receiving the first end 112 of the humeral
component 110. The top surface 230 of the extension member 224 may
coupled to and extend from the flat surface 222 of the base number
216. The top surface 230 may be, for example, arced or curved as
shown in FIGS. 20 and 24. The extension member 224 may also be, for
example, tapered as the extension member 224 extends away from the
bottom surface of the base member 216, as shown in FIGS. 20 and 24.
The extension member 224 may be used, for example, to secure the
spacer 210 to the anchor member 110 in the reverse implant system
200.
[0137] The protrusion or extension member 232 extends away from the
bottom surface 228 to the second end 214, as shown in FIGS. 20 and
22-24. The protrusion 232 may include a through hole or threaded
opening 234 extending through the protrusion 232 from the second
end 214 to the top surface 230, as best seen in FIG. 24.
[0138] With continued reference to FIGS. 20-24, the socket member
240 includes a first end or upper surface 242 and a second end or
lower surface 244. The first end 242 includes an articulating
surface 246 recessed into the socket member 240. The first end 242
also includes a tapered edge 248 extending circumferentially around
the socket member 240, as shown in FIGS. 19, 20, 23 and 24. The
socket member 240 also includes an engagement protrusion 250
extending away from the tapered edge 248. The engagement protrusion
250 may be, for example, inset from the outermost portion of the
tapered edge 248. The engagement protrusion 250 may include a
circumferential groove 252. The circumferential groove 252 of the
socket member 240 may align with the circumferential groove 220 of
the coupling member 210 when the socket member 240 is inserted into
the coupling member 210. The circumferential groove 252 of the
socket member 240 may be configured to receive a coupling member
260, such as, an O-ring. The socket member 240 may also include a
bottom surface 254. The bottom surface 254 may include a flat
portion and an arced or curved portion 256. The socket member 240
may also include a protrusion or stem 258 extending away from the
bottom surface 254. The curved portion 256 may extend between the
flat portion of the bottom surface 254 and the protrusion 258. The
protrusion 258 may be, for example, configured or sized and shaped
to engage the through hole 234 of the coupling member 210.
[0139] As shown in FIGS. 17-20, the implant system 200 may be
assembled by inserting the protrusion 232 of the coupling member
210 into the through hole 124 of the humeral component 110 and the
extension number 224 of the coupling member 210 into the interior
of the base 116. In addition, the protrusion 258 of the socket
member 240 may be inserted into the through hole 234 of the
coupling member 210 and the engagement protrusion 250 may engage
the recessed region 218 of the coupling member 210. An O-ring 260
or like coupling member may be positioned within the
circumferential groove 220 of the coupling member 210 and the42
circumferential groove 252 of the socket member 242 secure the
socket member 242 the coupling member 210. Finally, a fastener (not
shown) may be inserted into the through hole 124 of the humeral
component 110 and engage the threaded opening 234 of the coupling
member 210 to secure the humeral component 110 to the coupling
member 210.
[0140] Referring first collectively to FIGS. 25-37, another
orthopedic implant assembly or stemless implant system 300 is
shown. FIGS. 25-30 show multiple views of an anchor or humeral
component 310 for use in the orthopedic implant assembly 300. The
anchor 310 is adapted to be inserted into a humeral bone, as shown
in FIG. 37. The anchor 300 generally includes a base 312, a first
or central keel 320, a second or rear keel 324, a third or medial
keel 328, and a fourth or lateral keel 332. The base 312 may be
disposed at a constant angle, for example, ranging from 125 degrees
to 155 degrees and more preferably about 135 degrees, relative to
each keel 320, 324, 328, 332. Each keel 320, 324, 328, 332 may be,
for example, co-planar with the axis of insertion. The axis of
insertion may be, for example, approximately 45 degrees from the
top surface of the base 116 and may be in-line with the canal.
[0141] With continued reference to FIGS. 25-30, the base 312 of the
anchor 310 has the shape of a low-profile cylinder with an open
center 338 and a pair of flattened forward panels 340, as best
shown in FIG. 27. As further illustrated in FIGS. 25-30, the base
312 has a proximal upper surface 342 and an opposing distal bone
contacting surface 344.
[0142] As also shown in FIGS. 25-30, the anchor 310 further
includes central keel 320. The central keel 320 extends across the
diameter of the open center 338 of base 312. The central keel 320
further extends from the bone contacting surface 344 of the base
312 in a direction opposite the proximal surface 342 such that the
central keel 320 has a first length. Importantly, the central keel
320 has a first length such that when implanted into a humeral bone
the central keel 320 does not, for example, extend into the
diaphysis of the bone. However, the central keel 320 and the base
312 are designed to engage the bone to achieve sufficient short and
long term fixation.
[0143] The central keel 320 has a first length of not more than 45
millimeters and preferably not more than 40 millimeters. In the
most preferred embodiment, the central keel 320 has a length of not
more than 35 millimeters. In addition, the central keel 320 may
have a length of not more than 30 millimeters. The rear keel 324,
the medial keel 328, and the lateral keel 332 have lengths no
greater than the length of central keel 320. Moreover, in the
preferred embodiment, each keel 324, 328, 332 has a constant
cross-sectional shape and volume between an initial bone insertion
taper at a distal end 316 and the bone contacting surface 344 at a
proximal end 314.
[0144] Referring still to FIGS. 25-30, the central keel 320 further
includes a plurality of bone rasping fins 322 that extend from the
central keel 320. The fins 322 are preferably disposed vertically
along the exterior length of the central keel 320. The fins 322 may
extend directly or at an angle from the central keel 320. Each fin
322 may be of any desired shape useful in being inserted into the
bone.
[0145] Returning to FIGS. 25-30, the rear keel 324 extends from the
bone contacting surface 344 of the base 312 in a direction opposite
the proximal surface 342 of the base 312 and generally parallel to
the central keel 320. The rear keel 324 includes a plurality of
bone engaging fins 326 that extend from the rear keel 324. The fins
326 are preferably disposed horizontally, perpendicular to the
exterior length of the central keel 320. The fins 326 may extend
directly or at an angle from the central rear keel 320. Each fin
326 may be of any desired shape useful in being retained in a
bone.
[0146] With continued reference to FIGS. 25-30, the anchor 310
further includes the medial keel 328. The medial keel 328 extends
from the bone contacting surface 344 of the base 312 in a direction
opposite the proximal surface 342 of the base 312 and generally
parallel to the central keel 320. The medial keel 328 also includes
a plurality of bone engaging fins 330 that extend from the medial
keel 328. The fins 330 are preferably disposed horizontally,
perpendicular to the exterior length of the medial keel 328. The
fins 330 may extend directly or at an angle from the medial keel
328. Each fin 330 may be of any desired shape useful in being
retained in a bone.
[0147] Referring again to FIGS. 25-30, the lateral keel 332 extends
from the bone contacting surface 344 of the base 312 in a direction
opposite the proximal surface 342 of the base 312 and generally
parallel to the central keel 320. The lateral keel 332 includes a
plurality of bone engaging fins 334 that extend from the lateral
keel 332. The fins 334 are preferably disposed horizontally,
perpendicular to the exterior length of the lateral keel 332. Fins
334 may extend directly or at an angle from lateral keel 332. Each
fin 334 may be of any desired shape useful in being retained in a
bone.
[0148] Referring now to FIGS. 38-44 and with continued reference to
FIGS. 25-30, there is shown several views of a shoulder implant
assembly 300 including anchor 310 attached to a humeral head 350.
The humeral head 350 is a common component of its type having a
convex outer articular surface 352 and an anchor engaging surface
354. The humeral head 350 is attached to the anchor 310 by common
mechanical means, for example, a coupling member. FIG. 44 shows the
implant 300 inserted in a humeral bone.
[0149] Referring now to FIGS. 38-44, there is shown several views
of a reverse shoulder implant assembly 400 including the anchor 310
attached to the articular component 410. The articular component
410 is a common component of its type having a concave outer
articular surface 412 and an anchor engaging surface 354. The
articular component 410 is attached to the anchor 310 by common
mechanical means, for example, a coupling member. FIG. 44 shows the
implant 400 inserted in a humeral bone.
[0150] Advantageously, the finned shape and short keel length allow
the anchor 310, the implant 300, or the implant 400 to be inserted
vertically into a resected humeral bone without significant
preparation. Indeed, only a punch is needed prior to inserting the
anchor 310 into the bone.
[0151] While this invention has been described with respect to at
least one embodiment, the present invention can be further modified
within the spirit and scope of this disclosure. This application is
therefore intended to cover any variations, uses, or adaptations of
the invention using its general principles. Further, this
application is intended to cover such departures from the present
disclosure as come within known or customary practice in the art to
which this invention pertains and which fall within the limits of
the appended claims.
[0152] Referring now to FIGS. 55-67, an orthopedic implant system
or stemmed implant system 500 is shown. This stemmed implant system
500 may include a stem component 510, an articulating portion 150
and a coupling member 170. The articulating portion 150 and the
coupling member 170 are as described above with reference to
implant system 100 and will not be described again here for
brevity's sake. As shown in FIGS. 45-54, the stem component 510 may
include a first end 512 and a second end 514. The stem component
510 may include a plate or base 516 and a stem 542. The base 516
may have a large ring or surface area to assist with fixation, for
example, the base 516 may contact cancellous bone to provide better
support for the implant 500. The base 516 may include a recess or
circumferential groove 518 extending into the base 516 from the
first end 512. The groove 518 may be, for example, tapered as the
groove 518 extends from a first end 512 into the base 516 of the
anchor member 510, as shown in FIGS. 63 and 76. The circumferential
groove 518 forms an interior lip 520 positioned within the base
516. The base 516 may also include a central member 522 with an
opening 524 extending into the central member 522, as shown in FIG.
53. The opening 524 may include a first portion or first wall
portion 526 and a threaded portion 528. The first portion 526 may
extend from the first end 512 of the stem component 510 toward the
second end 514. The threaded portion 528 may be positioned at a
bottom of the opening 524. The diameter of the threaded portion 528
may be, for example, smaller than the diameter of the first portion
526.
[0153] With continued reference to FIGS. 45-54, the stem component
510 may also include arms 530 extending between the interior lip
520 and the central member 522. The arms 530 may include, for
example, at least one tapered edge 532, as shown in FIG. 51. As
shown, the stem component 510 may include two arms 530 which may be
positioned on opposite sides of the central member 522. The stem
component 510 may also include a first support member 534 and a
second support member 536. The first support member 534 may be
positioned between the two arms 530. Likewise, the second support
member 536 may be positioned between the 2 arms 530 and the second
support member 536 may be positioned opposite the first support
member 534. The first support member 534 may extend between the
first end 512 of the stem component 510 and the stem 542 on a first
side. The second support member 536 may extend between the first
end 512 and the stem 542 on a second side. The base 516 may also
include windows or openings 538 positioned between the arms 530 and
support members 534, 536. The openings 538 may extend entirely
through the base 516. The base 516 may also include a plurality of
fastener openings 540. The plurality of fastener openings 540 may
be, for example, configured or sized and shaped to receive
fasteners, such as, sutures and the like. The plurality of fastener
opening 540 may extend through the base 516 from the first end 512
toward the second end 514. In addition, the plurality of fastener
openings 540 may include openings extending through the second
support member 536 from an interior surface to an exterior
surface.
[0154] As also shown in FIGS. 45-54, the stem 542 may include a
proximal end 544 coupled to the second support member 536 of the
base 516 and a distal end or tip 546 positioned at the second end
514 of the stem component 510. The stem 542 extends away from a
bottom surface of the base 516 to the second end 514. The stem 542
may extend away from the base 516 at an angle, as shown in FIGS.
48, 50 and 53. The stem 542 may include an exterior surface 548 and
at least one interior surface 552, 554. The stem 542 may also
include a fin, legs, or protrusion 550 extending away from the at
least one interior surface 552, 554. The fin 550 may be positioned,
for example, at a midpoint or midline of the stem 542. The fin 550
may divide the interior surface 552, 554 into a first interior
surface 552 and a second interior surface 554. Each interior
surface 552, 554 may be, for example, curved or arced from the
medial or lateral exterior surface to the fin 550. As shown in at
least FIGS. 46 and 54, the stem 542 may have, for example, a "T"
shape as the stem 542 extends away from the distal end of the base
516. The exterior surface 548 and at least one interior surface
552, 554 make up the horizontal portion of the "T" shape and the
fin 550 makes up the vertical portion of the "T" shape. The stem
542 may be, for example, tapered as it extends away from the
proximal end 544.
[0155] Referring now to FIGS. 55-67, the assembled stemmed implant
system 500 is shown. Specifically, FIG. 63 shows a cross-section of
an assembled stemmed implant system 500. The first end 172 of the
coupling member 170 is inserted into the opening 160 of the
articulating portion 150. The alignment protrusion 180 may be, for
example, aligned with at least one slot 164 and inserted into a
slot 164 of the at least one slot 164 to prevent rotation of the
articulating portion 150 with respect to the coupling member 170.
The coupling member 170 may be coupled to the articulating portion
150, for example, with a fastener (not shown), a friction fit, such
as, a taper fit, and alternative known methods for coupling
articulating portion 152 and stem component 510. The base 516 of
the humeral component 510 may be, for example, received within the
recessed region 156 of the articulating portion 150, as shown is
FIG. 63.
[0156] Referring now to FIGS. 68-80 and with continued reference to
FIGS. 45-54, a reversed stemmed implant system 600 is shown. The
implant system 600 includes a stem component 510, a coupling member
or spacer 210, and a socket member 240. The stem component 510 is
as described with reference to implant system 500 and which will
not be described again here for brevity's sake. The coupling member
210 and the socket member 240 are as described above with reference
to implant system 200, which will not be described again here for
brevity's sake.
[0157] As shown in FIGS. 68-80, the implant system 600 may be
assembled by inserting the protrusion 232 of the coupling member
210 into the opening 524 of the stem component 510 and the
extension number 224 of the coupling member 210 into the interior
of the base 516. Specifically, extension member 224 may be inserted
into the recessed region 518 to secure the spacer 210 to the base
516 of the stem component 510 in the reverse implant system 600. In
addition, the protrusion 258 of the socket member 240 may be
inserted into the through hole 234 of the coupling member 210 and
the engagement protrusion 250 may engage the recessed region 218 of
the coupling member 210. An O-ring 260 or like coupling member may
be positioned within the circumferential groove 220 of the coupling
member 210 and the circumferential groove 252 of the socket member
242 secure the socket member 242 the coupling member 210. Finally,
a fastener (not shown) may engage the threads 528 of the stem
component 510 and the threaded opening 234 of the coupling member
210 to secure the stem component 510 to the coupling member
210.
[0158] Referring now to FIGS. 81-91, there are shown several views
of stem component 710 in accordance with the present invention. The
stem component 710 includes a base 712, a stem 726, and a plate
730.
[0159] Referring again to FIGS. 81-91, the base 712 has a proximal
surface 714, an opposing distal bone contacting surface 716, and an
open center or opening 718. The base 712 also includes a flat
anterior segment 720, a flat anterior lateral segment 722, and a
flat anterior medial segment 724.
[0160] Referring still to FIGS. 81-91, the elongate stem 726
extends across the diameter of the open center of the base 712 such
that stem 726 bisects the open center 718 of the base 712 and
connects to anterior segment 720. The stem 726 further extends from
the base 712 in a direction opposite the proximal surface 714 of
the base 712.
[0161] With continued reference to FIGS. 81-91, the tapered
elongated posterior plate 730 extends medially and laterally from
the stem 726. The plate 730 further extends from bone contacting
surface 716 of the base 712 in a direction opposite the proximal
surface 714 of the base 712. As further illustrated in FIGS. 81-91,
the plate 730 is disposed perpendicularly to the stem 726.
Moreover, the plate 730 has an anterior face 732 connected to the
posterior face 734 of the stem 726.
[0162] Referring now to FIGS. 92-102, there are shown several views
of a shoulder implant assembly 800 in accordance with the present
invention. As illustrated in FIGS. 92-102, the implant assembly 800
generally includes humeral component 710 attached via traditional
means known in the art to articular liner 810.
[0163] Referring now to FIGS. 98-102, there are shown several views
of a shoulder implant assembly 800. As illustrated in FIGS. 98-102,
implant assembly 800 includes humeral component or stem component
710 attached via traditional means known in the art to an articular
liner 810. It is within the scope of the present invention to
provide a system of implants comprising a plurality of stem
components, humeral heads, and liners of various sizes.
[0164] For illustrative purposes, several views of should implant
assembly 800 implanted into a humerus are shown in FIGS.
98-102.
[0165] A surgical method for implanting the implant systems 100,
200, 300, 400, 500, 600, 700, 800 may include preparing the
patient's joint using cut guides. Next, punches may be used to
prepare the interior surfaces of the bone for receiving a stemless
component 110, 310 or a stemmed component 510, 710. Using the
punches for insertion of the implant systems 100, 200, 300, 400,
500, 600, 700, 800 maximizes bone preservation, especially since
additional bone does not need to be removed after the punches are
used in order to implant the stemless components 110, 310 or the
stemmed components 510, 710. Once the bones are prepared, the
implant systems 100, 200, 300, 400, 500, 600, 700, 800 may be
inserted or coupled to the bones. Since the instruments and
preparation technique are the same to this point for both the
stemless and stemmed implants, either a stemless implant 100, 200,
300, 400 or stemmed implant 500, 600, 700, 800 may now be inserted
into the prepared bone. The stemless implants 100, 200 may be
inserted at an insertion angle which is, for example, in a
generally perpendicular orientation. As shown in FIGS. 37 and 44,
the stemless implants 300, 400 may be inserted at an insertion
angle which is, for example, in a vertical orientation with respect
to the axis of the canal of the humerus. As shown in FIGS. 98-102,
the stemmed implants 500, 600, 700, 800 may be inserted at an
insertion angle which is, for example, in a generally vertical
orientation.
[0166] When inserted into a patient's bone, the base 116, 516 each
include a large ring extending away from the groove 118, 518 and
the large ring should be placed into contact with cancellous bone
to provide better support for the implant 100, 200, 300, 400, 500,
600, 700, 800. Once placed in the desired position, the anchor
members 110, 510 of the implants 100, 200, 300, 400, 500, 600, 700,
800 may be, for example, sutured in place. Next, for an anatomic
implant 100, 300, 500, 800 the coupling member 170 with the tapered
second portion 182 engaging the tapered through hole 124 in the
anchor member 110, 510 may be used to secure the anchor member 110,
510 to the articulating portion 150. Alternatively, for a reverse
implant 200, 400, 600, 800 the coupling member 210 with the tapered
extension member 224 engaging the tapered groove 118 of the anchor
member 110, 510 may be used to secure the anchor member 110, 510 to
the socket member 240. Finally, the patient's incision may be
closed.
[0167] As may be recognized by those of ordinary skill in the art
based on the teachings herein, numerous changes and modifications
may be made to the above-described and other embodiments of the
present disclosure without departing from the scope of the
disclosure. The components of the implants, devices, and/or systems
as disclosed in the specification, including the accompanying
abstract and drawings, may be replaced by alternative component(s)
or feature(s), such as those disclosed in another embodiment, which
serve the same, equivalent or similar purpose as known by those
skilled in the art to achieve the same, equivalent or similar
results by such alternative component(s) or feature(s) to provide a
similar function for the intended purpose. In addition, the
implants, devices, and/or systems may include more or fewer
components or features than the embodiments as described and
illustrated herein. For example, the components and features of
implants 100, 200, 300, 400, 500, 600, 700, 800 may be used
interchangeably and in alternative combinations as would be
modified or altered by one of skill in the art. Further, the steps
of the surgical methods associated with the implants 100, 200, 300,
400, 500, 600, 700, 800 may be used interchangeably and in
alternative combinations as would be modified or altered by one of
skill in the art. Accordingly, this detailed description of the
currently-preferred embodiments is to be taken in an illustrative,
as opposed to limiting of the disclosure.
[0168] The terminology used herein is for the purpose of describing
particular embodiments only and is not intended to be limiting of
the invention. As used herein, the singular forms "a", "an" and
"the" are intended to include the plural forms as well, unless the
context clearly indicates otherwise. It will be further understood
that the terms "comprise" (and any form of comprise, such as
"comprises" and "comprising"), "have" (and any form of have, such
as "has", and "having"), "include" (and any form of include, such
as "includes" and "including"), and "contain" (and any form of
contain, such as "contains" and "containing") are open-ended
linking verbs. As a result, a method or device that "comprises,"
"has," "includes," or "contains" one or more steps or elements
possesses those one or more steps or elements, but is not limited
to possessing only those one or more steps or elements. Likewise, a
step of a method or an element of a device that "comprises," "has,"
"includes," or "contains" one or more features possesses those one
or more features, but is not limited to possessing only those one
or more features. Furthermore, a device or structure that is
configured in a certain way is configured in at least that way, but
may also be configured in ways that are not listed.
[0169] The invention has been described with reference to the
preferred embodiments. It will be understood that the operational
embodiments described herein are exemplary of a plurality of
possible arrangements to provide the same general features,
characteristics, and general system operation. Modifications and
alterations will occur to others upon a reading and understanding
of the preceding detailed description. It is intended that the
invention be construed as including all such modifications and
alterations.
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