U.S. patent number RE36,745 [Application Number 09/229,550] was granted by the patent office on 2000-06-20 for extrication cervical collar with adjustable supports.
This patent grant is currently assigned to Ambu Inc.. Invention is credited to Freddy T. Lee, Ronald M. Rudy, Jr..
United States Patent |
RE36,745 |
Rudy, Jr. , et al. |
June 20, 2000 |
Extrication cervical collar with adjustable supports
Abstract
A surgical collar for emergency rescues has mandibular and
occipital supports that will each adjust vertically without
affecting the other.
Inventors: |
Rudy, Jr.; Ronald M. (Boynton
Beach, FL), Lee; Freddy T. (Boynton Beach, FL) |
Assignee: |
Ambu Inc. (Linthicum,
MD)
|
Family
ID: |
23220866 |
Appl.
No.: |
09/229,550 |
Filed: |
January 13, 1999 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
Reissue of: |
314653 |
Sep 29, 1994 |
05593382 |
Jan 14, 1997 |
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Current U.S.
Class: |
602/18 |
Current CPC
Class: |
A61F
5/055 (20130101) |
Current International
Class: |
A61F
5/04 (20060101); A61F 5/055 (20060101); A61F
005/00 () |
Field of
Search: |
;602/18,19,17
;128/DIG.23 |
References Cited
[Referenced By]
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Feb 1991 |
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GB |
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Primary Examiner: Lee; Kim M.
Attorney, Agent or Firm: Levy & Grandinetti
Claims
We claim:
1. An extrication cervical collar suitable for rescue operations
comprising:
(A) a single wide band in the form of a loop of supporting material
of sufficient length to surround the neck of a patient,
(B) a mandibular support extending upwardly from said band, said
mandibular support comprising a substantially horizontal surface
component, and
(C) a plurality of spaced-apart structural members adjustably and
independently supporting said mandibular support from said band at
a distance required for the length of the neck of said patient,
wherein.[.;.]. .Iadd.: .Iaddend.
(i) a central of said structural members comprises a first stiff
strap extending downwardly from said mandibular support,
(ii) .[.said first strap.]. .Iadd.said first stiff strap
.Iaddend.comprises a vertical row of perforations therethrough,
(iii) said band supports a pin projecting forwardly therefrom and
fitable snugly into said perforations,
(iv) .[.the remaining two.]. .Iadd.the other of said plurality
.Iaddend.of said structural members comprise second and third stiff
straps that extend downwardly .[.from either side of said first
strap.]. .Iadd.on each respective side of said first stiff
strap.Iaddend., and
(v) said band comprises two pairs of essentially rectangular
openings therein for engaging said second and third structural
members to level said mandibular support.
2. The cervical collar of claim 1 wherein said plurality of
spaced-apart structural members equals three members.
3. The cervical collar of claim 1 comprising an independently
movable occipital support and means independently and adjustably
connecting said occipital support to said band as required by the
length of the neck of said patient.
4. The cervical collar of claim 3 comprising a plurality of sheets
of plastic foam cushioning on the surfaces of said band, said
mandibular support, and said occipital support contacting said
patient.
5. The cervical collar of claim 3 wherein said occipital support
comprises walls defining two spaced-apart vertical slots, said
cervical collar comprises a horizontal strap mounted across a rear
portion of said band, and said strap passes through said slots,
thereby securing said occipital support to said band.
6. The cervical collar of claim 1 wherein said band of supporting
material comprises high-density polyethylene about 0.06 inches (1.5
mm) thick.
7. The cervical collar of claim 1 wherein said mandibular support
curves upwardly and permanently around a central lengthwise
axis.
8. The method of forming the upward curve in the mandibular support
of claim 7 comprising the steps of inscribing said curve in the
form of a cut of about 1/2 its thickness in the material of said
mandibular support, and downwardly bending said mandibular support
at said inscribed curve, thereby curving said mandibular support
without the need for a shaping die.
9. An extrication cervical collar suitable for rescue operations
comprising:
(A) a single wide band in the form of a loop of supporting material
of sufficient length to surround the neck of a patient,
(B) a mandibular support extending upwardly from said band, said
mandibular support comprising a substantially horizontal surface
component, and
(C) a plurality of spaced-apart structural members adjustably and
independently supporting said mandibular support from said band at
a distance required for the length of the neck of said patient,
wherein:
(i) a central of said structural members comprises a stiff rod
extending downwardly from said mandibular support,
(ii) said band supports a spring clip comprising perforations for
said rod,
(iii) second and third of said structural members extend downwardly
.[.from either side.]. .Iadd.on each respective side .Iaddend.of
.[.said first structural member.]. .Iadd.the central structural
member .Iaddend.and comprise stiff straps, and
(iv) said band comprises two pairs of essentially rectangular
openings therein for engaging said second and third structural
members, thereby leveling said mandibular support.
10. An extrication cervical collar suitable for rescue operations
comprising:
(A) a single wide band in the form of a loop of supporting material
of sufficient length to surround the neck of a patient,
(B) a mandibular support extending upwardly from said band, said
mandibular support comprising a substantially horizontal surface
component, and
(C) a plurality of spaced-apart structural members adjustably and
independently supporting said mandibular support from said band at
a distance required for the length of the neck of said patient,
wherein:
(i) a central of said structural members comprises a first stiff
strap extending downwardly from said mandibular support and .[.a.].
.Iadd.an inner .Iaddend.surface facing said band,
(ii) said cervical collar comprises a first patch of hook and loop
fasteners fixed to the inner-facing surface of said strap,
(iii) said band supports a second patch of hook and loop fasteners
facing said first patch of hook and loop fasteners and grippable
thereto,
(iv) .[.the remaining two of said structural members.]. .Iadd.the
other of the plurality of structural members .Iaddend.comprise
second and third stiff straps that extend downwardly .[.from either
side of said first strap.]. .Iadd.on each respective side of said
first stiff strap.Iaddend., and
(v) said band comprises two pairs of essentially rectangular
openings therein for engaging said second and third structural
members to level said mandibular support. .Iadd.
11. An extrication cervical collar suitable for rescue operations
comprising:
(A) a single wide band in the form of a loop of supporting material
of sufficient length to surround the neck of a patient,
(B) a mandibular support extending upwardly from said band, said
mandibular support comprising a substantially horizontal surface
component, and
(C) a plurality of spaced-apart structural members adjustable and
independently supporting said mandibular support from said band at
a distance required for the length of the neck of said patient,
wherein:
(i) a central of said structural members comprises a first stiff
strap extending downwardly from said mandibular support,
(ii) means for vertically fixing the elevation of the mandibular
support, said means for vertically fixing removably affixes said
first stiff strap to said band,
(iii) the other of said plurality of said structural members
comprise second and third stiff straps that extend downwardly on
each respective side of said first stiff strap, and
(iv) said band comprises openings therein for engaging said second
and third structural members to level said mandibular support.
.Iaddend.
Description
BACKGROUND OF THE INVENTION
In rescue operations where, typically, the rescuers must move
victims from an accident site to a waiting ambulance or truck they
must protect the upper spinal columns of said victims with
emergency cervical collars before moving them. Rescue vehicles
routinely carry cervical collars of three or four different neck
lengths and a rescuer must carry several of these different-sized
cervical collars when he first runs from the vehicle to the
location of the victim. We have, herein, made the distances from
the collar proper to the occipital and mandibular support body
contacts, adjustable, so that vehicles need carry only one size of
cervical collar.
U.S. Pat. No. 4,712,540 describes a cervical collar that lies flat
in storage but in which the chin support automatically twists into
a transverse position when the collar expands to its cylindrical
form. However the patent describes no means for adjusting the
elevation of the chin support.
U.S. Pat. No. 3,916,885 describes a cervical collar made up of two
overlapping cylindrical bands where two frontal VELCRO-tipped
straps can adjust their relative positions. These adjustments
affect the whole upper band, however. They cannot adjust the
occipital and mandibular supports altogether independently.
U.S. Pat. No. 4,582,051, like the above, also comprises upper and
lower cylindrical bands and VELCRO means for adjusting the distance
between them. Here they position the adjusting means front and back
center and the adjustment of either means moves the entire upper
band. The patentees disclose no means for adjusting occipital and
mandibular supports independently.
SUMMARY OF THE INVENTION
We have invented a cervical collar, particularly for use in rescue
operations, comprising independently adjustable mandibular and
occipital supports. The collar comprises a single stiff wide band
to which the mandibular and occipital supports attach in a
vertically adjustable assembly. The structural elements of our
collar comprise 1.5 mm high density polyethylene sheeting with
sheets of resilient plastic foam cushioning riveted on the inside
surfaces of the structural elements wherever they may contact the
patient.
In a preferred embodiment the mandibular support comprises three
aligned, downwardly projecting, stiff straps, the central of which
has perforations that fit an adjusting pin projecting from a lower
portion of the supporting band, and the other two of which wedge
into rectangular slots in the same band. These straps adjust, not
only the overall elevation of the mandibular support, but its
transverse angle. Instead of a perforated strap for the central
support we also employ a stiff plastic rod, along with a plastic or
metal spring clip, attached to the band through the rod passes.
Preferably the immediate contacting element of the mandibular
support forms a trough-like member curved to accept a human chin.
We have determined that the appropriate curve will result from
cutting the desired shape into the surface of the plastic and then
making a 90 deg. bend in the plastic sheeting. We do not require
heat or a molding die.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 shows a frontal perspective view of the cervical collar of
our invention, obliquely from below.
FIG. 2 shows a rear elevation of the cervical collar of our
invention.
FIG. 3 shows a flattened plan of the unassembled plastic band of
our invention.
FIG. 4 shows plan of the foam cushioning cutout attachable to the
plastic band of FIG. 3.
FIG. 5 shows an elevation of the occipital plastic support of
our
invention.
FIG. 6 shows an elevation of the foam cushioning cutout attachable
to the support of FIG. 5.
FIG. 7 shows an exploded perspective view of the mandibular support
of our invention.
FIG. 8 shows an elevation of an alternative mandibular support of
our invention.
FIG. 9 shows a plan of the mandibular support 46 from above prior
to forming its curved shape.
FIG. 10 shows a section through a prior art rivet used to assemble
our invention.
FIG. 11 shows a sectional view of a novel holding pin usable with
the rivets of FIG. 10.
FIG. 12 shows a sectional view through the line 12--12 of FIG.
8.
FIG. 13 shows a modification of the occipital support of FIG. 5, in
reverse view.
FIG. 14 shows an elevation of a modification of the area below the
relief 22 of the plastic band 11, to cooperate with the
modification of FIG. 13.
FIG. 15 shows VELCRO patch for locking the mandibular support.
FIG. 16 shows an alternative consruction of the tongue 53.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Referring first to FIG. 1, and to FIG. 3 where the band lies flat,
with its inside surface down, our improved cervical collar 10
comprises a plastic band 11 about 31/2 inches (9 cm) wide and bent
into a cylindrical shape held closed by a VELCRO strip 12,
extending from an occipital end 13 of the band 11 to which we have
fastened it by plastic rivets through rivet holes 14p, 16p to a
mandibular end 17 which has a VELCRO strip 18 cemented to it. The
strip 12 fastens to the inside of the collar and passes to the
outside through a slot 19 at the occipital edge of the band 11. A
plastic occipital support 21 (FIG. 5) comprises, preferably, the
same type of plastic sheeting as the band 11, for which we prefer
high-density polyethylene, 0.06 in. (1.5 mm) thick. The plastic
band 11 (FIG. 3) comprises additional rivet holes 27p, 28p, 32p,
37p, 38p, 39p, 40p, 41p, 42p, 47p, and 48p for like-numbered rivets
and comprises a triangular opening 55 above the rivet hole 39f,
that remains unobstructed by the cushioning 50 .Iadd.(FIG.
4).Iaddend.; for a possible tracheostomy.
The occipital support 21 fits within the dimensions of a relief 22
cut into the upper edge of the band 11 and has two vertical guide
slots 23, 24 for a horizontal strap 26 that attaches to the band 11
by through two rivet holes 27s, 28s to span the relief 22. A
central portion of the support 21 extends downwardly in a tongue 29
with a vertical line of perforations 31--31 that fit an adjusting
pin 32, projecting from the band 11, to set the occipital support
21 at a desired height. We obtained the plastic rivets referred to
herein from commercial sources which continue to sell them widely
for connecting plastic and similar sheeting. However other means of
connection such as cementing, sewing, and stapling will also come
within the scope of our invention.
Conventional plastic rivets 27, 28, 32, 34, 36, 37, .Iadd.38, 39,
.Iaddend.42, .Iadd.47, .Iaddend.and 48 appear in FIG. 1 and rivets
27, 28, 34, 36, and 39 appear in FIG. 2. The numerals of these
rivets correspond to the number portions of the numerals marking
the rivet holes they are intended for in the other FIGURES.
In FIG. 6 we show a sheet of plastic foam cushioning 33 cut out to
fit the occipital support 21 to which it fastens through rivet
holes 34f, 36f so that it extends about 0.5 inch (13 mm) above the
top edge of the support 21. Also, in FIG. 4 we have shown a long
strip of plastic foam cushioning 50 to match the band .[.10.].
.Iadd.11 .Iaddend.so that the cushioning extends about 0.6 in. (15
mm) below the hard plastic of the band. The cushioning attaches to
the band through rivet holes 14f, 16f, 27f, 28f, .Iadd.32f,
.Iaddend.37f, 38f, 39f, 41f, and 42f.
Two attachment straps 43, 44, integral therewith (FIG. 3), attach a
mandibular support 46 to the band 11 by means of rivets (47, 48
FIG. 1), through rivet holes 47p, 48p with the straps 43, 44
twisted to make the mandibular support, a.k.a. chin rest,
horizontal. We score a curve about 0.03 in. (0.8 mm) deep in the
upper surface of the chin receiving portion 49 and then bend down a
lower arc 52 of the support 46 to form a right angle .Iadd.(FIG.
7).Iaddend.. This forces the .Iadd.upper .Iaddend.surface 49 to
form a dihedral curve with the surface of arc 52 that equals the
scored curve 51. This .[.require.]. .Iadd.requires .Iaddend.no
tools, dies or heating other than a scoring blade and an edge
defining the curve 51.
A tongue 53 (FIG. 7) comprising a neck portion 54 and attachment
nodule 56 fastens to the underside of the mandibular support 46 by
means of a rivet .[.57.]. .Iadd.57p (FIG. 7) through holes 57 (FIG.
9).Iaddend.. The tongue 53 comprises a line of perforations 58--58
that lock onto a pin protruding from the center of the rivet
.[.39.]. .Iadd.40.Iaddend.; and two strap-like elongations 59, 61
of the mandibular support 46, comprising respective sharp-edged
expansions 62, 63 pass in and out of two pairs 64, 66 and 67, 68 of
slots in the band 11 with sufficient friction to keep the
mandibular support 46 at any desired side to side angle, usually
180 deg. A shaped pad 69 with long side projections 71, 72 cushions
the upper surface 49 of the mandibular support 46 with the side
projections extending over the straps 43, 44. The rivet .[.49.].
.Iadd.57 .Iaddend.and side rivets .[.73, 74.]. .Iadd.47, 48
.Iaddend.secure the pad 69 to the mandibular support .[.49.].
.Iadd.46.Iaddend..
Essentially the construction of our cervical collar requires only
two basic materials, 0.06 inch high density polyethylene sheeting
and rolls of foam cushioning about 1/4 inch thick. We have used a
polyolefin foam called Volada from the Voltek division of Sekisui
America Corp. but do not wish to limit our invention thereto. Many
commercial sources make VELCRO widely available.
In FIG. 8 we have shown an alternative means for vertically fixing
the elevation of the mandibular support .[.49.]. .Iadd.46.Iaddend..
A plastic rod 76, comprising an .[.intergral.]. .Iadd.integral
.Iaddend.upper 90 deg. attachment shelf 79, projects downwardly
from the lower surface of the mandibular support 46 and passes
through openings in walls 77, 78 of a plastic or metal spring clip
75 that attaches to the band 11, and in FIGS. 15 and 16 another of
such alternative means, wherein we have fixed a VELCRO patch 81
onto the band 11 above the .[.tracheoscomy.]. .Iadd.triangular
.Iaddend.opening 55, and a matching patch 82 onto the tongue 53. We
have also invented an alternative means for fixing the occipital
adjustment, by affixing a VELCRO patch 83 onto the band 11 under
the relief 22 (FIG. 14) and a matching patch 84 onto the facing
side of the tongue 29 of the support 21.
FIG. 10 illustrates a section of a commercially available plastic
rivet having a plug 86 and a female portion comprising a snap 87.
Prongs 88 of the snap 87 fit into a sharp-edged groove 89 of the
plug 86 with a permanent grip. We have discovered that we can
fashion pins to secure the .[.straps.]. .Iadd.tongue .Iaddend.53
and 31 of the mandibular and occipital supports respectively by
elongating .[.shanks.]. .Iadd.shank .Iaddend.91 (FIG. 11) of
plastic plugs to have an annular depression 92 and bulb 93 that
will protrude from conventional rivets where gripping-pins are
required.
We present the foregoing description as exemplary rather than
definitive of our invention for which we desire an award of letters
patent as defined by the appended claims.
* * * * *