U.S. patent number 3,894,336 [Application Number 05/415,705] was granted by the patent office on 1975-07-15 for suture removal scissor.
This patent grant is currently assigned to Johnson & Johnson. Invention is credited to Joseph A. Desimone.
United States Patent |
3,894,336 |
Desimone |
July 15, 1975 |
Suture removal scissor
Abstract
Disposable scissors for cutting surgical bandages, sutures and
the like, comprising scissors having attached thereto semi-rigid,
flexible handle means, the handle means being frictionally and
removably attached to the scissors to permit normal operation of
said scissors.
Inventors: |
Desimone; Joseph A. (Point
Pleasant Borough, NJ) |
Assignee: |
Johnson & Johnson (New
Brunswick, NJ)
|
Family
ID: |
23646836 |
Appl.
No.: |
05/415,705 |
Filed: |
November 14, 1973 |
Current U.S.
Class: |
30/341; 606/174;
30/260 |
Current CPC
Class: |
B26B
13/12 (20130101); A61B 17/0467 (20130101); A61B
17/3201 (20130101) |
Current International
Class: |
B26B
13/12 (20060101); B26B 13/00 (20060101); A61B
17/32 (20060101); A61B 17/04 (20060101); B26b
013/20 () |
Field of
Search: |
;30/260,341,254,271,131,134,261,255 ;81/428R ;128/318,321 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Smith; Al Lawrence
Assistant Examiner: Peters; J. C.
Attorney, Agent or Firm: Lipow; Jason
Claims
What is claimed is:
1. In a disposable scissor having a pair of elements pivotally
attached together at a pivot point, each having at one end thereof
a cutting edge and each having at the other end thereof a shank to
which is attached a flexible handle having finger openings, the
improvement wherein,
said shanks each extend, beyond the pivot point, in a substantially
straight line over substantially the entire length of the handle
and are positioned over said finger holes to provide leverage for
cutting;
horizontal and axial movement limiting means are provided
comprising a projection on said shank engaging a depression in said
handle; and
vertical movement limiting means are provided comprising a detent
on said shank portion engaging an opening in said handle.
Description
BACKGROUND OF THE INVENTION
Scissors of various types are known in the art. Traditionally,
scissors made entirely of metal are provided by machining or
molding metal parts and such scissors are generally expensive,
re-usable and therefore, not disposable. In medical uses, where
sterility is desired, such scissors must be sterilized, e.g., steam
sterilized, before use. Scissors suitable for such use are
generally expensive and the sterilization procedures are often
time-consuming and costly. To overcome these disadvantages, other
types of less expensive scissors have been proposed which
essentially are made of a flexible material, such as plastic, where
only the blade portions are of metal. Although less expensive than
the all metal scissors, its function has not been entirely
satisfactory. Since the handle portions are flexible and contain no
metal for support therethrough, situations arise where it is
difficult to obtain adequate leverage through the handles for
satisfactory cutting action at the tips of the blades. Therefore
there appears to be a need for a scissor which will provide the
cutting action of an all metal scissor, yet be inexpensive in
construction to be disposable.
SUMMARY OF THE INVENTION
The present invention is directed to disposable scissors comprising
a pair of pivotally attached elements, each element having a
cutting edge at one end thereof. Each cutting edge is positioned to
be in opposed relation to the other in order that the edges work
against each other. Each element has a shank portion at the end
opposite the cutting edge, each shank portion having frictionally
and removably attached thereto, a semi-rigid flexible handle. The
elements also have abutment means positioned on the inside of at
least one shank portion. The flexible handles, when attached to the
pivotally attached elements, provide means for operating the
scissors to cut in a conventional manner.
The invention consists of a new and useful construction,
combination and arrangement of parts as described in the
specification and is illustrated in the accompanying drawings
wherein preferred embodiments have been presented. It is to be
understood that the drawings are illustrative of the invention and
are not intended to limit the scope thereof.
IN THE DRAWINGS
FIG. 1 is a plan view, partly in section with exploded parts,
and
FIG. 2 is an enlarged sectional view taken along lines 2--2 of FIG.
1.
DESCRIPTION OF THE INVENTION
Referring to the drawings, FIG. 1 shows an embodiment of the
invention wherein the scissors 10 comprises elements 12 and 14
which are attached by means of pivot 28. Each of the elements 12
and 14 have at one end thereof blades 16 and 18 which are provided
with cutting edges 17 and 19 respectively. Elements 12 and 14 are
attached in a manner such that edges 17 and 19 are in opposed
relation and work against each other.
Elements 12 and 14 have at the ends opposite blades 16 and 18,
shank portions 20 and 22. Abutment means 24 and 26 are positioned
on the inner side of shank portions 20 and 22 in a manner such that
the tips of blades 16 and 18 will come together in a closed
position at the same time abutment means 24 and 26 contact each
other. Such abutment means, once having contacted each other also
provide a leverage point to facilitate the cutting of objects in
the area of the tips of blades 16 and 18. It is to be understood
that, although two abutment means are shown, if desired, only one
may be employed where it is of sufficient length to obtain the
results as previously described.
Shank portions 20 and 22 also have projection means 30 and detent
32. Projection means 30 is adapted to engage depression 38 of
handle 36 and thereby limit the axial or horizontal movement of the
handle once postioned on the shank portion. Such movement is
further restricted in the forward direction, i.e., in the direction
of blades 16 and 18, in that end 34 of the shank portion is
positioned against end surface 42 of handle 36. Vertical movement
of the handle is restricted by means of positioning detent 32 into
opening 40 as handle 36 is attached to shank portions 20 and 22.
FIG. 2 shows detent 32 locked into position in opening 40. The
movement of handle 36 on shank portions 20 and 22 may be further
restricted by constructing the handle in a manner such that sides
50 and 52 frictionally engage the broad outer surfaces of the shank
portion.
Handle 36 is shown to have finger receiving means 44 wherein finger
openings are provided for operation of the scissors. It should be
understood that the illustrations shown are preferred embodiments
only and that other suitable finger receiving means may also be
employed. Such handle may be constructed of any semi-rigid,
flexible material including rubber; polyolefins such as
polyethylene and polypropylene; substituted aromatic hydrocarbons
such as polystyrene; phenol formaldehyde condensation products and
the like. The handles may be prepared by methods known in the art
such as by injection molding and the like.
The particular scissor construction of the present invention as
hereinbefore described, provides all of the advantages of
traditional all metal scissors. For example, the shank portions 20
and 22 extend the substantial length of handle 36 to offer the same
leverage for cutting purposes. On the other hand, the material
construction is much that the total cost is substantially less.
This is primarily due to the flexible material employed in the
removable handle. All metal scissors require molding or machining
the entire scissor including the handle. The present invention
provides a removable handle which is not metal ad is not molded or
machined with the scissor. Since the scissors of the present
invention are relatively inexpensive, they may be discarded after a
single use. For example, for surgical use in hospitals, the
scissors may be used once and thrown away. This offers another
advantage in that the cost of sterilization is avoided for
subsequent use. Furthermore, since the construction of materials
permit sterilization of the scissors, it would find particular
advantageous use in medical applications.
From the previous description and drawings it is believed that the
construction and advantages of the invention will be apparent to
those skilled in the art. It is understood that various changes and
modifications may be made without departing from the scope and
advantages of the invention.
* * * * *