U.S. patent application number 17/143709 was filed with the patent office on 2021-04-29 for orthopedic implant in the form of a plate to be fixed between two bone parts.
This patent application is currently assigned to Stryker European Operations Holdings LLC. The applicant listed for this patent is Stryker European Operations Holdings LLC. Invention is credited to Bernard Prandi, Charles P. Wapner, Keith Wapner, Peter W. Wapner.
Application Number | 20210121213 17/143709 |
Document ID | / |
Family ID | 1000005326540 |
Filed Date | 2021-04-29 |
![](/patent/app/20210121213/US20210121213A1-20210429\US20210121213A1-2021042)
United States Patent
Application |
20210121213 |
Kind Code |
A1 |
Prandi; Bernard ; et
al. |
April 29, 2021 |
Orthopedic Implant In The Form Of A Plate To Be Fixed Between Two
Bone Parts
Abstract
The invention relates to a plate fixed between two bone parts by
way of screws engaged in holes formed in the thickness of said
plate. The plate comprises an angled member or rib which is
inclined according to an angle of between about 30.degree. and
60.degree. in relation to the plane defined by the plate. The
angled member or rib has a hole for engaging a screw and is located
in the central part of the width, over a determined part of the
length of the plate, so that the screw brings the two bone parts
into a compressive position.
Inventors: |
Prandi; Bernard; (Rennes,
FR) ; Wapner; Keith; (Philadelphia, PA) ;
Wapner; Charles P.; (Media, PA) ; Wapner; Peter
W.; (Media, PA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Stryker European Operations Holdings LLC |
Kalamazoo |
MI |
US |
|
|
Assignee: |
Stryker European Operations
Holdings LLC
Kalamazoo
MI
|
Family ID: |
1000005326540 |
Appl. No.: |
17/143709 |
Filed: |
January 7, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
16429834 |
Jun 3, 2019 |
|
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17143709 |
|
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|
15130147 |
Apr 15, 2016 |
10349988 |
|
|
16429834 |
|
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|
14734676 |
Jun 9, 2015 |
9333013 |
|
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15130147 |
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|
14041706 |
Sep 30, 2013 |
9078713 |
|
|
14734676 |
|
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12918071 |
Oct 29, 2010 |
8556946 |
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PCT/FR2009/051879 |
Oct 2, 2009 |
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14041706 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61B 17/846 20130101;
A61B 17/8014 20130101; A61B 17/8052 20130101; A61B 17/8061
20130101; A61B 2017/681 20130101; A61B 17/808 20130101; A61B
17/8057 20130101; A61B 17/809 20130101; A61B 17/8004 20130101 |
International
Class: |
A61B 17/80 20060101
A61B017/80; A61B 17/84 20060101 A61B017/84 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 2, 2008 |
FR |
0856694 |
Claims
1. (canceled)
2. A system for fusing a first bone and a second bone separated by
a joint, said system comprising: a bone plate having a length
sufficient to span the joint, said bone plate having a first end
and a second end along said length, said length defining a
longitudinal axis, said bone plate defining: a first hole at or
adjacent the first end, said first hole configured to align with
the first bone of the joint; a second hole at or adjacent the
second end, said second hole configured to align with the second
bone of the joint; and a third hole located between said first hole
and said second hole, wherein said third hole is angled relative to
the longitudinal axis of said bone plate; a first fixation member
configured to be inserted through the first hole of the bone plate
and into the first bone of the joint; a second fixation member
configured to inserted through said second hole of said bone plate
and into the second bone of said joint; and a third fixation member
configured to be inserted through said third hole of said bone
plate, into the first bone, across said joint, and into the second
bone such that a free end of said third fixation member, not
attached to any portion of the bone plate, resides in the second
bone, wherein said third fixation member is the only fixation
member extending across said joint.
3. The system of claim 2 wherein said bone plate is contoured to
anatomically fit bones in a human foot.
4. The system of claim 2 wherein said joint is a
metatarsophalangeal joint.
5. The system of claim 2 wherein said joint is a naviculocuneiform
joint.
6. The system of claim 2 wherein said joint is a calcaneocuboid
joint.
7. The system of claim 2 wherein said joint is a tarsometatarsal
joint.
8. The system of claim 2 wherein said third fixation member is
configured to develop compression across said joint with lag effect
when said third fixation member is tightened.
9. The system of claim 2 wherein the free end of said third
fixation member and a free end of said second fixation member are
configured to reside adjacent each other within said second
bone.
10. The system of claim 2 wherein said bone plate includes at least
one pin hole adjacent said first hole, said pin hole configured to
receive a temporary fixation member.
11. The system of claim 2 wherein said bone plate includes at least
one pin hole adjacent said second hole, said pin hole configured to
receive a temporary fixation member.
12. A system for fusing first and second bone parts, said system
comprising: a bone plate having a length sufficient to span a
fracture or joint of a patient such that said bone plate is
positionable alongside first and second bone parts straddling the
fracture or joint, said bone plate having; a first hole configured
to align with the first bone part, a second hole configured to
align with the second bone part, a third hole located between the
first hole and the second hole, said third hole having an axis that
is configured to cross the fracture or joint during use, and a
fourth hole located adjacent either the first hole or the second
hole, said fourth hole being smaller in area than said first hole
or said second hole; a first fixation member configured to be
inserted through the first hole of said bone plate and into the
first bone part; a second fixation member configured to be inserted
through the second hole of said bone plate and into the second bone
part; a third fixation member configured to be inserted through the
third hole in the bone plate, into the first bone part, across the
fracture or joint, and into the second bone part, wherein a free
end of said third fixation member does not attach to any portion of
the bone plate and wherein the third fixation member is the only
fixation member extending across the fracture or joint; and a
temporary fixation member configured to be inserted through the
fourth hole in the bone plate.
13. The system of claim 12 wherein the bone plate is contoured to
anatomically fit bones in a human foot.
14. The system of claim 12 wherein the free end of the third
fixation member and a free end of the second fixation member are
configured to reside adjacent each other within said second bone
part.
15. The system of claim 12 wherein the bone plate is substantially
planar.
16. The system of claim 12 wherein the fourth hole is a pin
hole.
17. The system of claim 12 wherein the temporary fixation member is
a guide pin.
18. An orthopedic implant comprising; a bone plate having a
proximal surface and an opposite distal bone contacting surface,
said bone plate having a length sufficient to span a fracture or
joint of a patient such that said bone plate is positionable
alongside first and second bone parts straddling the fracture or
joint, said bone plate having a first hole configured to align with
the first bone part, the first hole sized to accept a first bone
screw, a second hole configured to align with the second bone part,
the second hole sized to accept a second bone screw, a third hole
located between said first hole and said second hole, said third
hole sized to accept a third bone screw having a screw head, said
third hole being angled relative to said bone plate such that,
during use, said third bone screw is positioned to extend through
said third hole and cross the fracture or joint, said third hole
being configured to allow the screw head to be seated below the
proximal surface of said bone plate, and a pin hole located
adjacent either said first hole or said second hole, said pin hole
being smaller in area than said first hole or said second hole,
said pin hole extending from said proximal surface of said bone
plate to said distal surface, said pin hole being configured to
accept a temporary fixation member.
19. The orthopedic implant of claim 18 wherein the temporary
fixation is a guide pin.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser.
No. 16/429,834, filed Jun. 3, 2019, which is a continuation of U.S.
application Ser. No. 15/130,147, filed Apr. 15, 2016 and now U.S.
Pat. No. 10,349,988, which is a continuation of U.S. application
Ser. No. 14/734,676, filed Jun. 9, 2015 and now U.S. Pat. No.
9,333,013, which is a continuation of U.S. application Ser. No.
14/041,706, filed Sep. 30, 2013 and now U.S. Pat. No. 9,078,713,
which is a continuation of U.S. application Ser. No. 12/918,071,
filed Oct. 29, 2010 and now U.S. Pat. No. 8,556,946, which is a
national phase entry under 35 U.S.C. .sctn. 371 of International
Application No. PCT/FR2009/051879, filed Oct. 2, 2009, published in
French, which claims priority from French Patent Application No.
0856694, filed Oct. 2, 2008, all of which are incorporated herein
by reference in their entireties.
BACKGROUND OF THE INVENTION
[0002] The invention relates to the technical field of orthopedic
implants.
[0003] More particularly, the invention relates to a plate for
arthrodesis or osteosynthesis adapted to be fixed between two bone
parts.
[0004] In a manner known to one having ordinary skill in the art,
this type of plate generally has holes for engaging screws,
allowing arthrodesis between two bones or osteosynthesis between
two bone fragments. This is, for example, the case for bones of the
hand or foot, without however excluding other applications,
particularly in the field of the spine. Depending on the pathology
to be treated, these plates can have a general rectilinear or other
geometric shapes.
[0005] From this state of the art, one of the objects the invention
proposes to attain is to improve, in a sure and efficient manner,
compression in a precise direction between the bone parts subjected
to the plate.
[0006] To attain the given object to enhance the compression
between the two relative bone parts, according to the invention,
the plate has a formation that orients at least one screw at an
angle with respect to a plane defined by the plate, the angle being
between about 30.degree. and 60.degree..
[0007] According to an advantageous embodiment, the formation is a
tab that is angled according to an angle between 30.degree. and
60.degree., and having a hole for engaging the screw. The angled
tab results from a cut out and a deformation of a portion of the
plate.
[0008] In another embodiment, the formation is a hole angled at an
angle between 30.degree. and 60.degree. for engaging the screw.
[0009] Considering the problem to be solved, the formation is
located on a determined portion of the length of the plate so that
the screw ensures the compression of the two bone parts.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The invention is described hereinafter in more detail, with
reference to the attached drawings in which:
[0011] FIG. 1 is a perspective view of an embodiment of the
plate;
[0012] FIG. 2 is a side view of the plate;
[0013] FIGS. 3 and 4 are perspective views showing the mounting of
the plate between two bone parts and their orientation by means of
the plate according to the invention, the bone parts being shown
schematically.
DETAILED DESCRIPTION
[0014] According to the invention, the plate 1 has at least one
formation 1a adapted to enable the positioning of at least one
screw 2, at an angle a of between 30.degree. and 60.degree. with
respect to a plane of the plate (FIG. 2).
[0015] In one embodiment, the formation 1a is an angled tab cut out
and deformed from the plate. For example, the deformation is made
with a cutting-punching operation. This angled tab has a hole 1a1
for screw 2. The angled tab 1a is positioned along the length of
the plate so that after the screw 2 is fitted to it, the screw
ensures the compression together of the two bone parts, as
indicated below in the description.
[0016] In another embodiment, to allow for an angular orientation
of the screw 2 according to an angle between about 30.degree. and
60.degree., the formation 1a can be formed as an angled hole. It
must be noted that the tab 1a enables adaptation of the angle as a
function of the pathology to be treated, given that it is possible
to deform this tab at will. In other words, the angle can be
adjusted over a few degrees directly by the surgeon in the
operating room, using an appropriate tool.
[0017] With reference to FIGS. 3 and 4 that show the positioning of
the plate 1 between two bone parts O1 and O2:
[0018] Once the osteotomies have been carried out, a template of
the plate, which does not have a guide formation, enables the
position of the tab to be determined.
[0019] After determining the position of the tab, the surgeon makes
a corresponding recess with the appropriate rasp.
[0020] Once the plate having the tab has been positioned, the
surgeon sets one or two screws 3, on a side of the site of the
osteosynthesis or the arthrodesis toward the tab. A temporary
fastening pin can, possibly, be positioned in a complementary
lug.
[0021] The screw 2 is then engaged in the hole 1a1 of the tab 1a to
place the fracture in compression.
[0022] Once the compression has been done, the surgeon can screw
one or several other additional fastening screws 3 and remove the
temporary pin.
[0023] In a known manner, this plate 1 has smooth and/or threaded
holes for the fastening screws 3 set in the bone parts O1 and O2 to
engage in, as shown in FIGS. 3 and 4.
[0024] Similarly, the plate 1 can have at least one hole 1c for a
pin for temporarily positioning the plate 1. Advantageously, the
plate 1 can have a guide 1c for the insertion of a pin on the side
of one of the bone parts O1 and another guide 1d for the insertion
of another pin on the side of the other bone part O2.
[0025] Considering the effect of the desired compression, such as
indicated above, the guide 1c is a circular hole whose diameter
corresponds substantially to that of the pin, whereas the other
guide 1d can be an elongated slot.
[0026] These provisions thus enable the bone to slide under the
plate 1 as the screws are set, while ensuring compression along a
precise direction, generally axially or parallel to the plate. The
pins are of any known and appropriate type, and perfectly known to
one having ordinary skill in the art.
[0027] The plate 1 can have several shapes, so that the holes 1a in
particular can be aligned or arrayed, all or in part, according to
the corners of a triangle or of a quadrilateral. These provisions,
in triangle or in quadrilateral, of the screws, improve the
stability of the mounting.
[0028] It must be noted also that the plate 1, no matter its shape,
can be longitudinally bent so as to adapt to the curvature of the
bone, consequently enabling the screws to form an angle between
them.
[0029] The advantages are readily apparent from the
description.
* * * * *