An Improved Injector for Medical Purposes.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
An Improved Injector for Medical Purposes.
I, DAVID JOHNSTON, of 30, Middleton Road, Dalston, N.E., L.R.C.P. Ed.,
L.F.P. & S. Glasgow, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved medicating injector, whereby medicated
air or vapor at any required temperature can be applied to the seat of disease, and
it is intended more particularly for use in the case of ear, nose, throat, and lung
diseases. In carrying my invention into effect, I proceed in or in about the follow-
ing manner. Supported in a suitable stand I provide a water bath, which can be
heated by a lamp or other source, or cooled by the application of ice. Into this
bath dips a reservoir to contain the medicated fluid or equivalent, and this reservoir
expands upwards into an air chamber provided at the contracted upper part with a
stopper. In the stopper are inserted two tubes (preferably made globular just
above the stopper). One of these tubes reaches nearly to the bottom of the reser-
voir, and has attached to its upper end a flexible tube terminating in an air-bulb
or ball. The other tube only just passes through the stopper, and contains within
it a thermometer, by which the temperature of the escaping air or vapor can be
ascertained. The upper end of this tube has also attached to it a flexible tube
provided with a terminal shaped to adapt it to the particular purpose to which the
apparatus may be applied. Pressure on the bulb causes the air or vapor to pass
up through the tube containing the thermometer, and out through the nose piece
or other termination to the flexible tube. By the use of this apparatus, air or
vapor of any desired temperature can be obtained by adjusting the temperature
of the water bath. Other than a water bath can be used if desired.
The tubes inserted in the stoppers can be supported by a frame, which may form
part of that holding the water bath.
•

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
My invention relates to an improved injector for medical purposes, whereby
medicated moist, dry or heated air can be applied to the seat of disease, and it is
intended more particularly for use in the treatment of ear, nose, throat and lung
diseases. In carrying my invention into effect, I proceed in or in about the following
>manner, making reference to the accompanying sheets of drawing in which,
Figs. 1, and 2, show side views of alternative or modified modes of construction.
Similar letters denote the same parts wherever they occur.
j
Referring to Fig. 1, supported on a suitable stand a I provide a receptacle 6 for
containing water or ice. Below b is a lamp c. Into 6 dips a reservoir d to contain
the medicated fluid or material, and this reservoir expands upwards into an air
chamber e provided at the contracted upper part with a stopper f. In the stopper f
are inserted two tubes (preferably made globular just above the stopper). One
of these tubes (g) reaches nearly to the bottom of the reservoir d and has attached
to its upper end a flexible tube h terminating in an air bulb or ball i. The other
tube j only just passes through the stopper f and contains within it a thermo-
meter k by which temperature of the escaping air or vapor can be ascertained. The
upper end of has attached to it a flexible tube provided with a terminal m
shaped to adapt it as a nose or mouth piece or for any other purpose to which the
apparatus can be applied. The ball i is provided with an air inlet valve n the
valve opening for the admission of air when the ball is allowed to expand, and
closing when the bulb is compressed. When air is to be applied of the normal
temperature of the apartment in which the apparatus is used, nothing is placed
in b, and pressure on the bulb i will force air down 9, through the medicating
fluid or material in d, from whence the medicated air will pass into e, up through
the tube and out at m. When cold medicated air is required, ice or other cooling
substance can be put in b. When moist heated air is required, water is placed
in and the lamp c lighted. When dry hot medicated air is required, instead
of carrying the tube j straight up, I prefer to make it longer, and bend it down as
at o o and upwards as at 7, a globular part being provided at followed by the
upward extension r, within which is the thermometer k¹. The upper end of r is
attached to the flexible tube having the mouth, nose or other piece m.
Sur-
rounding the tube at o¹ and p is a water baths and below this a lamp c¹. In this
modification nothing would be put in b and the lamp c may be removed. By
pressing on i, air is forced down g, through the medicating material in d, down o
and up passing through the water baths heated by the lamp c¹. As a modified
and simplified form of apparatus for use where air is only required to be of the
temperature of the apartment in which the apparatus is used, the form shown in
Fig. 2, may be employed. In this apparatus the whole is supported on a wide
foot t, on and forming part of which is the reservoir d for containing the medicat-
ing material or fluid, and expanded into the air chamber e having in its contracted
upper end the stopper f, through which is passed the tube 9 reaching nearly to
the bottom of d and made of somewhat large diameter at g¹, and provided at the
upper end with the air bulb a having the inlet valve n. The other tube j just
comes below the stopper f and is continued upwards and attached to the flexible
tube having the mouth, nose, or other piece m. The part and the adjacent
tube jare preferably enclosed within a metallic casing u closed at the top by a
cap v.
Pressure on a forces the air down g through the material in d up ; and
out at m.
I do not confine myself to the precise shapes, or configurations relative propor-
tions or disposition of parts, as described in the above specification, or exemplified
in the accompanying drawings, as considerable variation is possible without
departure from the spirit of the invention.
Having now particularly described and ascertained the nature of my said inven-

page_text: tion and in what manner the same is to be performed, I declare that what I
claim is:-
CLAIMS.
1. An improved injector for medical purposes, the said injector consisting essen-
tially of an air bulb having an air inlet valve and attached to a flexible tube which
in turn is attached to a glass tube passed downwards into a receptacle containing
medicated fluid or material, the medicated air or vapor passing upwards and out
through another tube having attached to it another flexible tube terminating in
a mouth or nose piece or the like, the said receptacle being or not surrounded by a
water bath heated by a lamp or other means, or cooled by ice or other suitable
treatment, and a thermometer being provided at a suitable part to indicate the
temperature of the escaping air or vapor, the whole substantially as described in
the above specification, and exemplified in Fig. 1, of the accompanying drawings.
2. The modification of the apparatus which is the subject matter of the preceding
Claim 1, by which modification medicated dry air is heated above its entering
temperature by being passed through a tube surrounded by a heated water bath,
the whole substantially as described in the above specification with reference to
Fig. 1, of the accompanying drawings.
3. The apparatus for simply medicating air without changing its temperature
from that of the apartment in which the apparatus is used, the said apparatus
being constructed and operating substantially as described in the above specifica-
tion, and exemplified by Fig. 2, of the accompanying drawings.
4. The improvements in injectors for medical purposes, the said injectors being
constructed and operating substantially as described in the above specification and
exemplified in the accompanying drawings.
T11941 day of Tanuome 1908
HUGHES & YOUNG,
23, Coleman Street, London, E.C., Agents for Applicant.