US1619886A - Diagnostic apparatus - Google Patents

Description

March 8, 1927.

D. M. RYAN DIAGNOSTIC '-APPARATUS .2' Sheets-Sheet 1 Filed March 24,- 1926 Attorney March 8, 1927.

D. M. RYAN DIAGNOSTIC APPARATUS Filed March 24, 1926 2 Sheets-Sheet 2 a H n n w i I. p

Patented Mar. 8, 1927.

UNITE- starts DOBSYQMFRYAN, E ,HINTODL'WEST VIRGINIA.

DIAGNOSTIC APPARATUQ I Application filed March 24, 1926. Serial. No. 97,057.

The object of my said invention is'the provision of an apparatus designed for use by medical doctors and through the medlum of which chest expansionmay be accurately estimated.

Tothe attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed.

In the accompanying drawings, forming part of this specification Figure 1 is a plan view of theapparatus constituting the preferred embodiment of my invention.

Figure 2 is an enlargedview of the same, partly in section and partly inelevation.

Figure 3 is an enlarged view, partly in section and part-ly'in elevation, illustrating one of the novel valves comprised in the preferred embodiment of my invention.

Similar numerals of reference designate corresponding parts in Figures 1 to Among other elements my novel apparatus comprises a fiexible bag 1, of silk or other appropriate mater-iahdesigned to be girded about the chest and fastened through the medium of tapes, strings, or other device 2, at the ends of the bag.

In the bag 1 and extending practically throughout the length thereof is an inflatable tube -3,preferablyof thin rubber, and also within the bag 1 are inflatable air containers 4, the said containers 4 being also by preference of thin rubber and being arranged at diametrically opposite point, as indicated by dotted line in Figure 1, for a purpose hereinafter set forth.

In addition to the bag or envelope 1 and the described parts therein my preferred apparatus comprises mercury pots 5 and glass tubes 6 connected with the bottoms of the pots 5 and having upstanding portions on which are graduated scales 7 as appears in Figure 2. Connected to the upper ends of the pots 5 is a conduit 8 having a. cut off valve 9, and interposed between and connected to the lower portions of the pots 5 is a conduit 10 in which is a cut off valve 11. The valve 9 and 11 are connected through the medium of links 12 with a head 13 on which is a handle 14, and by virtue of this provision it will be appreciated that movement of the handle 14; will be attended by movement of the valves 9 and 11 in concert to cut off or establish communication between the pots 5 and between conduits 18 and 18?. At is a compressible pump bulb that is connected Atthis point Iwould have'it understood that each of the valves 17,;21and 22 is of the construction best shown inFig-ure 8, that is to say, it includes a tubular'body 23-of metal or other appropriateniaterialbhaving a valveseat 24: olfset fromits bore 25-and also having-a threaded aperture 26 in coincidence-with said seat 24, and a screwshank 27 tapered at its inner end to conformtothe seat 2% and having a knurled head28 exterior of the tubular body 25.. 'The valve characterized as 'described is not only extremely simple and inexpensive, but also advantageous because of its efllciency-and the facility with which 'the end :portions of its body 25 may be inserted in and heldrbyithe end portion of rubber tubing section.

In .the practical use of my .novel apparatus, the bag or envelope 1 is girded and fastened about the chest of a patient, and when the inflatable tube 3 is to be employed the valves 22 are closed to cut off the containers 4:, while when said containers 4; are to be used the valves 21 are closed to cut-oft the inflatable tube 3. It will also be understood that by manipulation of the valve handle 1 1 one side of the apparatus including a mercury pot, a graduated mercury column, the inflatable tube 3 and one pocket 1 may be cut off from the other side of the apparatus.

When the inflatable tube 3 is to be used,

the said tube 3 is inflated by manipulation of the bulb 15 until mercury in the upright portions of the tubes 6 begins perpendicular oscillation.

Manifestly in the practical use of my novel apparatus lateral and anteroposterior expansion of both lungs together, or each lung separately can be estimated. The latera]. expansion of each lung can also be accurately estimated as can the anteroposterior expansion of each lung separately, or the eX- pansion of both lungs together with both lateral and anteroposterior expansion can also be estimated.

It will be apparent from the foregoing that both embodiments of my invention are simple and inexpensive in construction and are devoid of delicate parts such as are likely to get out of order after a short period of use.

I have specifically described the preferred embodiments of my invention in order to impart an exact understanding of the said embodiments. I do not desire, however, to be understood as limiting myself to the precise construction illustrated, my invention being defined by my appended claims within the scope of which structural changes may be made without departure from my invention.

Having described my invention, what I claim and desire to secure by Letters-Patent, 1s:-

1. An apparatus of the class described comprising a flexible envelope adapted to be secured about the chest, a flexibleinflatable tube arranged in said envelope and extending practically throughout the length thereof, flexible inflatable air containers also arranged in said envelope, mercury pots, graduated columns in connection with said pots, a conduit between the pipes, a second conduit connected with the pots, and having branches in connection with the inflatable tube and the inflatable containers, a valve intermediate the ends of the first conduit, a valve in the second conduit, and means for actuating the valves in the conduit simultaneously.

2. An apparatus of the class described comprising a flexible inflatable tube adapted 1,e19,sse

to be girded and secured about the chest of .a patient, mercury pots, graduated columns in connection with said pots, and a conduit connected with the mercury pots intermediate its ends and also connected at its opposite ends to the inflatable tube and equipped with means for supplying air under pressure.

3. An apparatus of the class described comprising a flexible inflatable tube adapted to be girded and secured about the chest of a patient, mercury pots, graduated columns in connection with said pots, and a conduit connected with the mercury pots intermediate its ends and also connected at its opposite ends to the inflatable tube and equippedwith means for supplying air under pressure; the conduit connections to the inflatable tube being valved, and valve means being interposed between the mercury pots, whereby one pot may be isolated from the other. a

4. In an apparatus of the class described, a flexible inflatable device adapted to be opposed to the chest of a patient, a mercury pot, a conduit connected between said pot and said inflatable device, means for supplying air under pressure to the inflatable device and the pot, and a graduated tube in connection with the pot; said inflatable device being arranged in a flexible envelope,

an auxiliary flexible inflatable container enclosed in said envelope, and means connecting the auxiliary container with the mercury pot and means for supplying air under pressure.

In testimony whereof I aflix my signature.

DORSY M. RYAN.

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