Improvements in or connected with Tracheotomy, Laryngotomy and Bronchotomy Tubes.
Year: 1899

page_text: Date of Application, 14th Feb., 1899
Complete Specification Left, 26th Oct., 1899-Accepted, 2nd Dec.,
1899
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:-
It is desirable that tracheotomy tubes and the like, should be so constructed
that they may be readily placed into position without causing injury to the
trachea, and further, when the tube is in position, it is desirable that the walls
of the trachea, adjacent to the incision through which the tube is inserted, should
be effectively supported; the present construction of instrument has for its object
the accomplishment of these desired results.
According to my invention, I make the tracheotomy tube in two parts, viz.: an
outer cylindrical part and an inner completion part. The outer cylindrical part
consists of a metallic or other cylinder provided at one end with a flange, and at its
opposite end it is provided with a flap or projecting arm having raised or rounded
edges and of somewhat hollow formation, this flap is preferably arranged at about
right angles to the outer cylindrical part.
The inner completion part consists of a cylinder adapted to pass into the outer
cylindrical part, and is provided with a flange at one end and at its opposite end
a flap or projecting arm is formed, constructed and arranged in substantially
the same manner as the flap provided upon the end of the outer cylindrical part.
Each of the cylindrical portions of the two parts, which form the tracheotomy
tube, have parts, opposite to where the flaps are formed, cut away, in order to
facilitate the introduction of the completion part into the outer cylindrical part.
Each of the cylindrical side portions of the two parts are extended beyond the
flaps, and suitably curved so as to form supports for that part of the trachea
adjacent to and in line with, the incision through which the tracheotomy tube is
inserted.
To place the tracheotomy tube into position, the outer cylindrical part is first
inserted, the completion piece is then passed through the outer cylindrical part
and the two flanges of the two parts are brought together, and secured by any
suitable fastening or fastenings.
A very convenient fastening consists in forming the flange of the outer cylin-
drical part with an indentation, above which swings a pivotted catch. The flange
of the completion part is formed with a tongue piece which rests, when the two
flanges are brought together in the aforesaid indentation and may be locked in
this position by turning the pivotted catch over the tongue piece, whereby the
two parts are securely held together.

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:—
It is desirable that tracheotomy tubes and the like, should be so constructed
that they may be readily placeu into position without causing injury to the
trachea, and further, when the tube is in position, it is desirable that the walls
of the trachea, adjacent to the incision through, which the tube is inserted, should
be effectively supported; the present construction of instrument has for its object
the accomplishment of these desired results.
I will now describe my invention with reference to the accompanying drawing,
whereon Fig. 1 is a perspective view shewing my improved instrument complete.
Fig. 2 is a perspective view shewing the two parts of which the instrument is
composed as hereafter described, in the position they would assume while being
separated. Fig. 3 is a vertical longitudinal section of one of the parts hereafter
termed the outer cylindrical part, the second part, hereafter termed the inner
completion part having been separated therefrom, and shewn at Fig. 4, also in
vertical longitudinal section, Fig. 5 shewing the same part as is shewn at Fig. 4,
but slightly modified in shape.
Similar letters of reference refer to like parts in the several figures of the
drawings.
According to my invention, I make the tracheotomy tube in two parts, viz.: an
outer cylindrical part A, and an inner completion part B. The outer cylindrical
part A consists of a metallic or other cylinder provided at its rear end with a
nange A and at its front end there is fixed to, or formed with the tubular part A,
a Hap or projecting arm A² having raised or rounded edges and of somewhat
hollow formation, and this projecting arm A² is preferably arranged at about
right angles to the cylindrical part.
In the outer cylindrical part A a portion of the cylindrical wall opposite to
that upon which the arm A is located is cut away at A³ in order to facilitate the
introduction of the completion tube B hereafter mentioned, and the side parts A
of the cylinder wall are extended rearwards in suitable curved form and serve to
form supports for that part of the trachea adjacent to and in a line with the
incision through which the tracheotomy tube is inserted.
The inner completion part B also consists of a cylinder adapted to pass into
the outer cylindrical part A, and is provided with a flange B at the front end,
and at its rear end with a flap or projecting arm B², constructed similarly to the
flap A² of the part A.
A portion of the cylindrical wall of the part B opposite to the projecting arm B²
is cut away at B3, the portions so removed at A3 and 13 permitting of the passage
of the projecting arm 12 through the tube A, when the parts are being placed
together.
The completion part B is shewn at Fig. 4 with the side walls of the cylindrical
portion extended rearwards at B and curved, and such extensions when the two
parts A and B are placed together fit and may complete the lateral rear extensions
of the tracheotomy tube, although I may dispense with the extensions in the
part B and make same as at Fig. 5, the extensions A* of the part A sufficiently
answering the purpose.

page_text: To place the tracheotomy tube into position, the outer cylindrical part A is
first inserted, the completion piece B is then passed through the outer cylindrical
part A and the two flanges A B₁ of the two parts A and B are brought together
and secured by any suitable fastening or fastenings.
A very convenient fastening consists in forming the flange A' of the outer
cylindrical part A with an indentation A above which swings a pivotted catch A.
The flange B of the completion part 1 is formed with a tongue piece B which
rests, when the two flanges A B are brought together, in the aforesaid indenta-
tion A and may be locked in this position by turning the pivotted catch over the
tongue piece B5, while the upper parts of the flanges A B are held together by
the winged button A7, and the two parts are securely held together.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is :-
1. Constructing a tracheotomy tube, consisting of an outer cylindrical part A,
and an inner cylindrical completion part B, each part A and B having a flange
at its front end and a projecting arm at its rear end at about right angles with the
axis of the parts, portions of the cylindrical wall of each part A and B being cut
away upon the opposite side to the projecting arm, the cylindrical side portions
of the part A or of both the parts A and B extending rearwardly beyond the flaps,
such extensions forming lateral supports for the wall of the trachea, and suitable
fastenings for locking the flanges and holding the composing parts together,
substantially as set forth.
2. The construction and combination of parts composing the tracheotomy,
laryngotomy, and bronchotomy tubes, substantially as described with reference to
the accompanying drawings.
Dated this fith love of fiatal
1000
BREWER & SON,
London and Leeds, Agents for the Applicant.