An Improved Tracheal Tube.
Year: 1889

page_text: Date of Application, 8th May, 1889
Complete Specification Lett. 28th Aug., 1889-Accepted, 5th Oct, 1889
PROVISIONAL
SPECIFICATION.
An Improved Tracheal Tube.
I ROBERT HENRY CLARKE MA M.B. M.RCS Clarence Lodge Redhill, Surrey
Surgeon do hereby declare the nature of this invention to be as follows
The object of my Invention is to so construct a tracheal tube as to enable it to fit
accurately the exterior and interior parts of the human or animal subject under
treatment. To this end I employ a right angular tracheal tube which corresponds
accurately to the curves of the parts to which it is applied. This instrument 18
composed of three separate parts which for the purposes of description I will refer to
under the letters A B C
A and B, together form the symetrical halves of a tube which is made complete by
The tube formed in the
uniting the separated halves or placing them in opposition
manner described unites the external surface of the skin with the internal surface of
the trachea perpendicular to the axis of the trachea and is held in position by two
flanges or feet passing a short distance up and down the inside of the trachea, curved
transversely convex so as to fit the concave surface of the trachea. The external orifice
of the tube is expanded into a broad external plate with a transverse curve corre-
sponding to that of the surface of the neck. The above halves or sections of the tube
are introduced separately, and are then fixed in situ by an inner tube made in one
piece having a flange which accurately fits the external tube and is secured thereto
by studs or any equivalent means
The instrument described is made of thin metal
and is preferably platinum plated. A cover having a stopped or glazed end may be
fitted to the internal tube.
Dated May 8th 1889
FRANCIS M. ROGERS,
Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Tracheal Tube.
ROBERT HENRY CLARKE MA., M.B, M.R.C.S. Clarence Lodge Redhill Surrey
Surgeon 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 object of my Invention is to so construct a tracheal tube as to enable it to fit
accurately the exterior and interior parts of the human or animal subject under
treatment. To this end I employ a right angular tracheal tube which corresponds
accurately to the curves of the parts to which it is applied. This instrument is
composed of three separate parts wbich for the purposes of description I will refer to
under the letters A, B, C. A & B together form the symetrical halves of a tube
which is made complete by uniting the separated halves, or placing them in
opposition The tube formed in the manner described, unites the external surface of
the skin with the internal surface of the trachea, perpendicular to the axis of the
trachea and is held in position by two flanges or feet passing a short distance up and
down the inside of the trachea, curved transversely convex so as to fit the concave
surface of the trachea. The external orifice of the tube is expanded into a broad

page_text: external plate with a transverse curve corresponding to that of the surface of the
neck. The above halves or sections of the tube are introduced separately and are
then fixed in situ by an inner tube made in one piece having a flange which
accurately fits the external tube and is secured thereto by studs, or any equivalent
means. The instrument described is made of thin metal and is preferably platinum
plated. A cover having a stopped or glazed end may be fitted to the internal tube.
I will now describe my invention more particularly by the aid of the accompanying
drawings in which
Fig 1, shews a perspective view of the parts referred to under the letters A & B.
Fig. 2, shews a perspective view of the part referred to under letter C.
Fig. 3. shews in perspective the parts A, B, C, united.
Fig. 4. shews cover for tube having stopped ends.
The parts A and B together form the symetrical halves of a tube which is made
complete by uniting the separated halves or placing them in opposition. The tube
thus formed unites the external surface of the skin with the internal surface of the
trachea perpendicular to the axis of the trachea and is held in position by the two flanges
or feet a, a, passing a short distance up and down the inside of the trachea. The flanges
or feet a a, are curved transversely convex as at g, so as to fit the concave surface of
the trachea. The external orifice of the tube is expanded into a broad external
plate 6 6, having a transverse curve 1, corresponding to that of the surface of the
neck. The operation of my invention is as follows :-The above halves or sections of
the tube are introduced into the incision made in the trachea separately; and are then
fixed in situ by the inner tube c. See fig. 2, made in one piece and having a
plate 61, which accurately fits the tube plate b. Buttons e, e, e, e, upon the divided
tube pass through corresponding holes f,f,ff in the plate of tube c. By turning
these buttons one half turn, or in a direction transverse to the holes ff, the two tubes
are securely fastened together See fig. 3. A stud k, is mounted upon the tube c,
for the attachment of an external glazed cover if desired A cover may also be
employed having a stopped end if desired See fig. 4 The instrument described
is made of any suitable thin metal and is preferably platinum plated.
I am aware that it has been proposed to fit the outer and inner plates of tracheal
tubes to the shape of the external curve of the neck and I make no claim for
so forming these parts excepting in a tube constructed substantially as herein
claimed.
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 :-
1st. A right angular tracheal tube formed in halves and having outer and inner
plates symetrically shaped to the external curve of the neck, and internal curve of the
trachea, secured when in position by an inner tube made in one-piece, and by buttons
mounted upon the divided tube passing through the slots provided in plate of inner
tube substantially as set forth.
inner tube
2nd. A Tracheal tube formed in halves, uniting by means of an
secured as described, the external surface of the skin with the internal surface of the
trachea perpendicular to the axis of trachea as set forth.
Dated August 28th 1889.
FRANCIS M. ROGERS,
Agent for Applicant.