Improvements in Canula and Trocar for Animals.
Year: 1894

page_text: Date of App ication, 15th Jan., 1894
Complete Specification Left, 15th Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in Canula and Trocar for Animals.
CHARLES HENRY HUISH Surgical Instrument Maker 31 Mundaina Road
Honor Oak S.E. do hereby declare the nature of this invention to be as
follows:-
A modified and improved form of Toopes canula and trocar for animals made by
me which instrument being unpatented may be described as follows:
I. An ordinary aspirating canula and trocar fitted with stop-cock and angular
socket arm.
II. An ordinary Higginsons two valve rubber syringe with bone
nozzle on to which is fitted a rubber tube into which is fitted a metal socket to
receive the metal plug of the delivery tube connected by another plug to the
angular arm socket of the canula. III. An aspirating needle. IV. Gum clastic
vaginal pipe. V. Gum elastic rectum pipe.
After inserting the trocar covered by its canula into the rumen in cases of
parturient apoplexy in the cow or into the colon in impaction in the horse the
trocar is withdrawn the stopcock half turned and the short or free end of the
syringe is immersed in a vessel containing the agent to be employed the ball of
the syringe is compressed and the fluid is injected through the syringe and canula
into the rumen or colon.
For aspirating a sac the separate aspirating needle supplied is plugged on to
the short end of the syringe tube and inserted into the sac the ball compressed
as before and the fluid contained in the sac ejected at the opposite end of the
syringe.
In my modification I retain the canula trocar and syringe, but I discard the bone
nozzle and intermediate connecting tube as a means of connecting the syringe with
the trocar and canula. The bone nozzle is however retained as a receptacle for the
wound, nasal vaginal and rectal pipes.
The original aspirating needle was unprotected at its point and as such was very
liable to injure parts being operated upon I therefore discard it and in its place use
a guarded needle the guard being a sliding probe pointed sheath and to avoid
septic poisoning by using the same syringe for aspirating or exploring as that used
for injecting fluids into the colon and rumen I now supply an extra syringe in the
case containing the instrument.
I have also made made the useful addition of a back and forward flow pipe for
nasal or wound irrigation and I retain the vaginal and rectal pipes as before. I do
not confine myself to the exclusive use of an interrupted current syringe but may
use a continuous current one.
Dated this 10th day of January 1001.
CHARLES HENRY HUISH,
31, Mundaina Road, Honor Oak, S.E.

page_text: Fig. 5, is tubes of bone v and w.
By inserting the trocar c up covered by its canula binto rumen or colon removing
the trocar c and half turning the stopcock a the short rubber tube of the syringe or
right hand being immersed into the agent to be injected the ball p of the syringe is
compressed and the fluid passes through the syringe and canula into the colon or
rumen.
For aspirating the aspirating needle was plugged on the short tube of the syringe
and the needle inserted into the sac being aspirated.
In my modification I retain the original trocar and canula Fig. 1, a, b, c, and
syringe e Fig. 2, but I discard the bone nozzle and intermediate tube for the
purpose originally intended as a means of connecting the delivery tube d of the
canula. It is however retained as a nozzle w to plug other pipes onto. Instead
of using an unguarded aspirating needle I have adopted a needle / Fig. 3, with a
sliding probe point guard m to prevent mischief by the point being inserted too far
into the sac, and instead of pumping the fluid through the same syringe e as
used for the colon and rectum I avoid the possibility of septic poison being
thus introduced by having a separate syringe p Fig. 3, to be used for attaching
the aspirating needle, and for filling the aspirated sac with an agent to
prevent the reformation of fluid I include a glass and vulcanite syringe Fig. 4,
with any shaped nozzle s. I have also included a back and forward flow with
elastic pipet for nasal and wound irrigation, and continued the injecting tubes u
and v.
I do not coufine myself to an interrupted current syringe but may use a continued
current.
In Fig. 2, I provide a branch i to the syringe e to receive the metal mounts g
and h, and on the other side of the said syringe is a branch k to receive a nozzle.
In Fig. 3, I provide a glass tube and branch n to connect the needle / to the
syringe p. À nozzle g is attached to the syringe.
n
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In canula and trocar for animals, the combination of the various parts of
the apparatus, substantially as herein described and according to the accompanying
drawings.
•

page_text: 2. In canula and trocar for animals, the combination of the syringe e branch
branch mounts g and h with tube d stop cock a canula 6 and trocar c, sub-
stantially as herein described and according to Figs. 1, and 2, of the accompanying
drawing.
3. In canula and trocar for animals, the combination of the aspirating needle?
branch n glass tube o and syringe p with nozzle a substantially as herein described
and according to Fig. 3 of the accompanying drawing.
Dated this 15th day of October 1894.
J. P. BAYLY,
..
18, Fulham Place, W., Agent for the Applicant.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.