Improvements in or connected with Tracheotomy, Laryngotomy, and Bronchotomy Tubes.
Year: 1894

page_text: Date of Application, 1st Mar., 1894
Complete Specification Left, 30th Nov., 1894-Accepted, 29th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with Tracheotomy, Laryngotomy, and
Bronchotomy Tubes.
I, JAMES ERNEST ARNOLD of West Smithfield in the City of London,
Surgical Instrument Maker, do hereby declare the nature of this invention to be
as follows:-
So-called tracheotomy tubes as heretofore constructed for veterinary surgical
purposes, are difficult to get into position and when inserted to secure and retain
them firmly together in the trachea, and the object of my invention is to remedy
this defect, while at the same time I combine strength with lightness.
In instruments of this class it is considered preferable that one half of the
instrument should be first inserted and the other half subsequently, but the
difficulty has been to insert the second half and afterwards to fix it in position
after insertion, whereas by my invention when the first half is inserted, the second
half necessarily follows and is guided in its travel by that of the first half, and is
thus, so to say, practically secured during the action of insertion.
According to my invention I make the tracheotomy tube in two halves by
dividing it centrally and longitudinally into two halves, one end of each half of
the tube having a semi-circular or other shaped flange or disc thereon, one of such
discs being provided with lugs (say two) with button hole shaped slots therein, the
other disc being provided with correspondingly shaped studs for passing through
the apertures in the other disc. The other or opposite end of the tracheotomy
tube, or each half thereof, is made with flaps with raised or rounded edges and
made somewhat hollow on the inner surface thereof, and preferably or nearly at
right angles to the tube proper. That portion of the tube where the division is
made, the wall of one is grooved and the wall of the other is made with a rib or
fillet that will slide in the groove of the other half of the tube, thus it will be
understood that by sliding the rib into the longitudinal groove in the other half
along same and to the end thereof, and passing the button hole openings over the
studs and then turning the tails thereof, that the two halves forming the tracheotomy
tube become firmly and rigidly fixed to one another, as if the tube was made in
one piece thus obviating the possibility of any substance formed in the trachea.
(through irritation or otherwise) from closing or partly closing the opening, and by
this means free ingress and egress of air is provided.
I likewise provide a cap which may if desired either completely close the
opening, or partially so, by having the same covered with wire gauze or its
equivalent.
By turning back the stud tails the half tube can be drawn back along the groove
and removed.
Dated this 1st day of March 1894

page_text: Improvements in or connected with Tracheotomy, Laryngotomy, and.
Bronchotomy Tubes.
I, JAMES ERNEST ARNOLD, of West Smithfield, in the City of London,.
Surgical Instrument Maker, 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 :-
So-called tracheotomy tubes as heretofore constructed for veterinary surgical
purposes, are difficult to get into position, and when inserted to secure and retain
them firmly together in the trachea, and the object of my invention is to remedy
this defect, while at the same time I combine strength with lightness.
In instruments of this class it is considered preferable that one half of the
instrument should be first inserted and the other half subsequently, but the
difficulty has been to insert the second half and afterwards to fix it in position
after insertion, whereas by my invention when the first half is inserted, the second
half necessarily follows, and is guided in its travel by that of the first half, and is
thus, so to say, practically secured during the action of insertion.
My invention will be readily understood by reference to the accompanying
drawings, whereon
Figure 1 is a side elevation, and Figure 2 a front elevation, showing a con-
structional example ;
Figure 3 is a vertical section on the line X Y of Figure 1;
Figures 4 and 5 show perspective views of the two halves of the 'instrument
separated, and
Figure 6 is a perspective view when the parts are placed together and secured.
Similar letters of reference refer to like parts in the several figures.
According to my invention I make the tracheotomy tube in two halves,
marked A and B, by dividing it centrally and longitudinally, one end of each
half of the tube having a semi-circular or other shaped flange or disc A, B,
thereon, one of such discs, say that marked B' being provided with lugs B², (say
two) with button hole shaped slots CC therein, the other half disc A¹ being
provided with correspondingly shaped studs A³ for passing through the apertures C
in the other half disc B'. The other or opposite end of the tracheotomy tube, or
each half thereof, is made with flaps or projecting arms DD, with raised or
rounded edges, and made somewhat hollow on the inner surface thereof, and
preferably at right angles or nearly so, to the tube proper. At that portion of
the tube where the division is made, the wall of one, Figure 4, is grooved at E E,
and the wall of the other, Figure 5, is made with ribs or fillets F F, that will slide
in the grooves E E of the other half of the tube, thus it will be understood that by
sliding the ribs F into the longitudinal grooves É in the other half, along same, and
to the end thereof, and passing the button hole openings Cover the studs A' and
then turning the tails of the latter, that the two halves A and B forming the
tracheotomy tube, become firmly and rigidly fixed to one another as if the tube
was made in one piece; thus obviating the possibility of any substance formed in
the trachea (through irritation or otherwise) from closing or partly closing the
opening, and by this means free ingress and egress of air is provided.
I likewise provide a cap which may if desired either completely close the
opening or partially so by having the same covered with wire gauze or its
equivalent.
By turning back the stud tails A³, the hall tube can be drawn back along the
groove E and removed.

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. The tracheotomy, laryngotomy, and bronchotomy_tubes, formed in two
parts A and B, the tube of one part having grooves E, and the other part,
ribs F, to take into the grooves when the parts are brought together, substantially
as described.
2. The tracheotomy, laryngotomy, and bronchotomy tubes, formed in two-
parts A and B, the tube of one part having grooves E, and the other part
ribs F to take into the grooves when the parts are brought together, in combination.
with the half discs A' B₁; and fixing devices to attach same together, substantially
as and for the purposes set forth.
3. In tracheotomy, laryngotomy, and bronchotomy tubes formed in two parts,.
the grooves E in one part to receive the ribs F of the other part, the half
dises A B at one end of the tube parts, and the fixing devices A and C,.
together with the flaps D D, all substantially as and for the purposes hereinbefore
described.
4. The general arrangement and combination of parts composing the improved
tracheotomy and other tubes for like purposes, wherein the tubes are formed in two
parts, with guides and ribs for adjusting same together; and fixing devices therefor,
flaps D D to prevent obstruction of the tube, and with or without a gauze cap for
protecting the opening, all constructed substantially as and for the purposes.
described with reference to the accompanying drawings.
Dated this 30th day of November 1894.
BREWER & SON,
London and Leeds, Agents for Applicant.