Improvements in Veterinary Obstetric Instruments.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Veterinary Obstetric Instruments.
JOHN POLLOCK, F.R.C.V.S., Veterinary Surgeon. Chapel Field Road, Norwich,
CHARLES HENRY HUISH, Surgical Instrument Maker, 8, Fisher Street, London,
W.C., do hereby declare the nature of this invention to be as follows:-
A set of instruments to be used in veterinary obstetrics No. 1 being a single
barrelled ecraseur with cross handles the gate of ecraseur being fitted with
wheels and movable cutter fitting in a dovetailed groove. The chain is smooth
in one part serrated in another with lancet blades for cutting the skin in another
to be used separately or in conjunction with No. 2 the harpoon which has a cross
handle with tubular shank and head to screw on point of tube, this head has
two jointed wings which are held close to tube by means of keeper or other
contrivance.
When in use and the foetus is pierced keeper is withdrawn wings fly open by
means of springs on their inner surface the handle is then unscrewed from head
and withdrawn the head being secured by a cord fastened to its interior.
Th
11 1
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:1 1000
JOHN POLLOCK, F.R.C.V.S.
CHARLES HENRY HUISH.
Improvements in Veterinary Obstetric Instruments,
JOHN POLLOCK, F.R.C.V.S., Veterinary Surgeon, Chapel Field Road, Norwich,
Norfolk, CHARLES HENRY HUISHI, Instrument Maker, 8, Fisher Street, London,
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:
The invention hereinafter described consists of a set of instruments for use
in veterinary obstetrical cases when of such a character that embryotomy is
necessary. These instruments are adapted for use in conjunction or separately,
the whole combining to form a set comprising the following.
Fig. No. 4 harpoon.
Fig. No. 4, single powerful ecrascur with cross handles and fasteners, also
gate at extreme end fitted with wheels and moveable cutter.

page_text: Fig. No. 4, ecraseur chain, part of which is plain, part serrated, part with
lancet blades.
Figs. No. 4 and 4º, are flat tubular guards for the introduction of lancet blade
chain, or for bringing the chain into circular saw action, when arranged as shown
in Fig. 4º.
Note. The drawings represent a full front view of the instruments and parts
thereof, to which reference will now be given in detail.
Fig. No. 4 is a representation of obstetrical harpoon, designed for use in cases
where operator can only touch but cannot handle the factus. Parts a, b, c, d,
may be described as the head of harpoon. a is a pointed cone with joints
formed at its base to which the arms with springs are attached. These arms
are capable of being clasped close to the socket c, and held during the first part
When
of the operation by keeper d. The end of tube e is screwed into socket c.
the fetus is pierced by point, and the head of the harpoon passed into the
abdomen or thorax, the keeper d is pushed off, and the arms
fly open in virtue
of springs on the inner surface. This instrument permits of the handle or
rod being unscrewed or removed; by this unscrewing, the head of harpoon is
left inside the foetus, whilst the rod e is withdrawn. The operator now retains
hold of the foetus by means of rope g which was passed through the handle f
and tube e and fastened to the head of harpoon in socket c. The operator by
pulling rope g, drags the foetus into position so that the next instrument. in the
set can be brought into use.
Fig. No. 4 is the powerful single barrelled ecraseur, specially designed for
use in hitherto unmanageable cases of dystokia. Parts a, b, and c, are fixed
on to extreme end of ecraseur tube by socket and shall first be described. The
gate or end of ecraseur through which the chain passes, is supplied with a cutter
knife a, fitting into a dovetailed slot b. By means of this arrangement, much
less pressure is required in severing the limbs of foetus: On each side of the
gate opening, 2 small wheels marked c are fixed; this removes all dragging and
friction, and permits easy motion of the chain when in use. The handle end of
ecraseur is fitted with a moveable socket f, two fasteners for chain marked 9,
and arms; these arms are moveable for convenience of packing, and can be
fixed easily for holding when instrument is in use.
The chain No. 4", has links arranged for sawing and cutting purposes, possess-
ing on its inner surface lancet blades a, and serrated links 6 alternately placed.
When the chain is in position, and the ends of it passed through ecraseur gate,
link d is attached to nut e, and link c to fastener g. By screwing the handle i,
nute is drawn in, bringing the serrated and lancet blades into cutting action.
To place chain 4B in position around the foetus for cutting purposes, it is
necessary to use tube-guard Fig. 4°. This tube 4C is flattened, and permits of
the chain 4B sliding easily through its interior. The chain when being passed
around the limb of foetus, is drawn out of the tube, thus safeguarding the womb
from injury, as the lancet blades would not be exposed till chain is in proper
position. When it is deemed advisable to cut the limb or sever the fœtus with-
out the use of ecraseur, chain 4 B is used, together with two tube guards 4 C,
so arranged as to form Fig. 4°. An end of chain is placed down the interior
of each tube guard 4 C. On the face of these tubeguards marked b on Fig. 4º,
a slot is cut marked c having round holes cut in it for attachment of stud 6 of
fastener d. Before the chain is passed down these tubes, the fastener d, shown
in section on right hand of Fig. 4, must be attached to chain ends marked c
and d by stud a. Each chain end attached to stud a is now passed down the
interior of tube-guard 4 D. When chain is drawn sufficiently tight, stud b of
fastener d is allowed to spring down into one of the holes c on the surface of
tube b. When thus fixed, the instrument can be grasped by handles e and made
to act like a circular saw round the part to be cut. By means of the fastener d
the chain can be lengthened or shortened at the will of the operator by simply
putting the stud 6 of the fastener d into a fresh hole on the tube b.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. In embryotomy, the employment of such invented instruments as Fig. 4°
with spring arms, and moveable head attached to cord running up tubular handle,
adapted for foetal traction in conjunction with other sections or parts of the set
comprised in this invention.
(2). Improvements in veterinary surgical appliances for use in obstetrical
surgery by arrangement and combination of several parts of Figs. 4, 4, 4°
and 4º, providing the means for cutting and severing foetus in difficult dystokia,
enabling the operator scientifically, surgically, and successfully to cope with
such cases.
(3). The introduction and invention of Fig. 4 together with gate of Fig. 4^,
fitted with moveable cutter and wheels to prevent friction and dragging of chain,
also stud fastener g and moveable handles h also lancet bladed chain 4B with
its method of introduction by passage through tubular guards 4 C, and further,
the capability of using 4 B as circular cutting saw as shown in drawing 4D by
fixing chain ends in 2 tubes 4 C by keeper d. All parts named under this Claim
No. 3, are novel inventions, so designed as to be capable of combination and
adaptation in veterinary obstetrical practice substantially in the manner and
for the purpose as hereinbefore described, and set forth in the drawings.
1111
1000
JOHN POLLOCK, F.R.C.V.S.
CHARLES HENRY HUISH.