A Combined Saw and Forceps for Surgical and other Purposes.
Year: 1893

page_text: Date of Application, 5th Dec., 1893-Accepted, 13th Jan.,
1894
COMPLETE SPECIFICATION.
A Combined Saw and Forceps for Surgical and other Purposes.
We, ARTHUR WORMULL, and CHARLES ANTHONY WORMULL, trading as
Evans and Wormull, of 31 Stamford Street, Blackfriars, in the County of London,
Surgical Instrument Makers, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
Hitherto combined surgical saws and forceps have been made which are only
applicable to special operations and the object of this invention is to construct a
combined saw and forceps which may be used for operations generally and be
capable of being rendered thoroughly aseptic.
And in order that our invention may be fully understood we will proceed to
explain the same with reference to the accompanying sheet of drawings in
which:-
Figure 1 represents the forceps and saw ready for use.
Figure 2 shews the saw detached from the forceps.
Figure 3 represents side view of the forceps with the two portions detached from
one another.
Figure 4 represents front view of same.
Figure 5 represents side view of ratchet catch bar.
Figure 6 is plan view of same.
The same letters denote the same parts in all the figures.
The forceps are made in two pieces each consisting of a handle terminating in a
suitable jaw to hold the bone while being cut.
a is the under jaw of the forceps which is formed with a groove therein to
allow the saw blade a to make a clean cut through the bone d. The jaw a is
preferably approximately semi-circular in shape as shown and serrated or other-
wise formed at e on each side of the groove to ensure a good grip on the
bone d.
is the upper jaw of the forceps also serrated as shown at g or otherwise
formed to hold the bone firmly when the jaws are brought together.
The upper jaw forms a T head on the handle and is provided with a radial
slot i struck from the pin j as a centre which slot receives a pin k secured to the
saw c.
The said jaw is also bifurcated or slotted lengthwise as shewn at to allow the
saw c to oscillate therein when cutting. m is a ratchet catch to hold the forceps in
position for cutting, hinged at n to the handle o of the forceps in such a manner as
to be readily detached therefrom this may be conveniently done by means of a
slot pin the rod m fitting over a pin n in the portion of the handle o which is
slotted to receive the portions of the catch m the spring t which is rivetted or
otherwise secured at u to the handle o bearing against the portion v of the catch m
preventing the same from becoming accidentally detached.
is a hinge pin having a T or other suitably shaped head to allow of the two
portions of the forceps being readily attached to or detached from each other for
cleaning and other purposes it being however fully understood that the head of the
pinj and the slot are placed at such an angle with the handles ho as to prevent
the two portions of the forceps from becoming detached when in use.
The saw is constructed in two parts namely the blade and the handle c¹ the
cutting portion of the blade being approximately semi-circular, the pin k being
placed at the centre of the circle of which the blade forms a portion.

page_text: The handle e inay be slotted and the blade secured therein by one or more
rivets or we may secure the handle to the blade by any other suitable
means.
When the instrument is to be used for cutting bones the flesh is cut through in
the ordinary way until the bone to be cut is exposed the said bone is then gripped
by the forceps as shewn at Figure 1 and the forceps secured thereon by the
catch in the saw preferably having first been inserted in the jaw with the pink in
the curved slot i the saw is then oscillated by means of the handle c¹ until the bone
is severed the saw being fed forwards by the pressure of the hand operating
the saw.
As each portion of the instrument is detachable from the others the whole may
be rendered absolutely aseptic by boiling or steeping in any suitable solution.
In conclusion we would remark that we do not bind ourselves to the exact
details as shown on the drawings as the shape of the jaws. may be somewhat
modified.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a combined saw and forceps for surgical and other purposes the bifurcated
jawf having a slot i therein substantially as herein before described and for the
purpose stated.
2. In a combined saw and forceps for surgical and other purposes the curved
jaw a having a groove therein substantially as hereinbefore described and for the
purpose stated.
3. In a combined saw and forceps for surgical and other purposes the com-
bination of a handle o terminating in a grooved jaw a having a portion e thereof
serrated or otherwise formed to ensure a good grip with a handle terminating in a
bifurcated jaw the said handles being detachably connected to each other for the
purpose stated.
4. In a combined saw and forceps for surgical and other purposes the saw blade c
having an approximately semi-circular cutting edge attached to a handle c¹ the
said saw being adapted to be oscillated about a pink engaging with a slot in the
upper jaw of the said forceps all substantially as hereinbefore specified.
5. The combination of a forceps having a semi-circular jaw a and a bifurcated
jaw having a curved slot therein with a saw c having an approximately semi-
circular cutting edge and adapted to be oscillated about a pink engaging with the
slot by means of a handle o substantially as herein before specified.
6. In a combined saw and forceps for surgical and other purposes constructed as
hereinbefore described the ratchet catch m detachably secured to one handle of the
said forceps substantially as described.
7. The combined saw and forceps for surgical and other purposes constructed as
hereinbefore specified and shewn by the accompanying drawings and operating in
the manner specified.
Dated this 5th day of December 1893
T. E. HALFORD,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicants.