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Publication numberUS402779 A
Publication typeGrant
Publication dateMay 7, 1889
Publication numberUS 402779 A, US 402779A, US-A-402779, US402779 A, US402779A
InventorsAlexander Steinhoff
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 402779 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.) 2 Sheets-Sheet 1.



No. 402,779. Patented May7, 1889,


h CD

(No Model.) 2 Sheets-Sheet 2.


PETERS Photo-Limogmpher, Wnhingion. D, C.




SPECIFICATION forming part of Letters Patent No. 402,779, dated May *7, 1889.

Application filed November 21, 1888. Serial No. 291,436. (No model.)

To aZZ whom it may concern:

Be it known that I, ALEXANDER STEINHOFF, of Briesnitz, near Dresden, Kingdom of Sax ony, German Empire, doctor of medicine, have invented certain new and useful Improvements in Apparatus for Treating Emphysema, of which the following is a specification.

The present invention consists in an apparatus for treating emphysema, in which apparatus, besides those parts usually employed for such treatmentas, for instance, an airaccumulator and an inhalation mouth-piece or mask connected together by pipes or tubesan expansible air-vessel is made use of, said air-vessel being arranged or introduced between the air-accumulator and the mouthpiece. This expansible air-vessel, while being put alternately in communication with the accumulator and with the mouthpiece, has for its object to act by expansion against the chest or thorax of the patient when said vessel receives the charge of compressed air from the accumulator, if connected with the latter, whereas if connected with the mouthpiece it discharges its compressed air for inhalation. In such alternate action of the expansible air-vessel the change of its communication with the accumulator or with the mouth-piece is not performed by any special labor of the patient, said change being produced automatically by alternating electrical connection of the valve in the mouth-piece with two Valves, of which one is arranged in the pipe-connection between the accumulator and the expansible air-vessel, the other being arranged in the pipe-connection between the expansible airvessel and the mouth-piece. air-vessel, which Ipreferably name a breathing-belt, produces in an automatical manner by its expansion a compression of the thorax during the exhalation period, thereby essentially assisting the treatment of emphysema by compressed air.

In Figure 1 of the annexed drawings I have shown the arrangement of the complete apparatus during employment of same, whereas Fig. 2 shows a separate View of the valves in their electrical connection with the mouthpiece or mask and the source of electricity. Fig. 3 is a vertical section, and Fig. 4 is a sectional plan, of the valve-box.

The expansible The air, which, if necessary, may be mixed with any medical substances, is forced by any of the known devices'-such as pumps, bellows, &c., worked by water pressure, motor, or treadle, &c.*into the accumulator, which, according to the pressure with which the air is to issue from it, may be loaded by weights.

The air from the accumulator is conducted first into the Valve-box B, (which will hereinafter be described in detail,) and from here into the breathing-belt O. belt 0 consists mainly of an expansible ves sel of such form that it may readily be placed on or against the thorax of the patient, and preferably on or against the lower part of the thorax. The expansible vessel is kept in this position by belts or straps over the shoulders of the patient, crossing on the back, and being buttoned to straps or belts, which, coming from the ends of the expansible vessel,

This breathing are united by a buckle 'or otherwise at the made of a less expansible material, whereas the wall of said breathing-belt next the body of the patient is of a more expansible material, so that if compressed air is admitted into the breathing belt it will expand toward the thorax and will compress the latter by such expansion.

The breathing-belt may be made, preferably, of a properly-formed sack of vulcanized caoutchouc or other suitable material. In order to make the outer wall away from the patient less expansible, it may either be made of thicker material or be covered on this side by some non-expansible fabric. If, now, this outer wall or covering-fabric is provided at its side ends by belts or straps buckled at the back of the patient, as above stated, the

expansion of the breathing-belt, if compressed air is admitted, must take place toward the thorax.

From the breathing-belt a pipe conducts the airinto the valve-box D, and from the latter into the mouth-piece of the inhalationmask. The mask may be suitably made of a wire. framing, the wires being covered with cloth, and'the whole mask being covered by some flexible material.

From the foregoing description the manner of using the apparatus composed as described is readily understood, if it is taken into consideration that during the period in which the patient inhales or breathes the valve in the box B is closed and the valve in the box D is opened, whereas during the exhalation period the valve in B is opened, while the valve in D is closed. By this alternate play of valves inhalation of compressed air issuing from the breathing-belt takes place, and during exhalation through the nose the breathing-belt is charged with compressed air from the accumulator, by which filling process the breathing-belt exerts by its expansion a compression of the thorax.

The play of the valves in the boxes B and V I) is effected by an electric current from the element or battery E, or from any other convenient source of electricity, in the following manner: As indicated in Fig. 2, the pipe or tube a terminates in the inhalation-mask a, within which is a flap-valve, I), which by its standing position is kept close, and which flap-valve will readily open by inhalation or breathing of the patient. This flap-valve is capable of conducting an electric current, and it is connected by the wire 0 with the element or battery E, whereas the contact (1, projecting from the lower end of the flap-valve b, is arranged between the two contact ends of the wires 6 and f. The wire 6 is at its other end connected to the coil of an electromagnet in the valve-box D, from where a returnwire, g, leads to the battery E. The wire f is at its other end connected to the coil of an electro-magnet in the valve-box B, from where a return wire, it, leads also to the battery E.

The construction of the valve-box B is shown in detail in Fig. 3, which is a vertical section, and Fig. i a horizontal section.

B is an electronnagnet connected with the conducting-wire f and the return-wire 7L.

B is the flap-valve, arranged as an armature to the electro-magnet B, which armature is attracted by B as soon as the current flows through the coils or bobbins of the electrounagnet. By such attraction the air-inlet pipe is closed. As soon as the current ceases by interruptions, the flap-valve B will be withdrawn from the electrounagnet by means of the spring B thereby opening the air-inlet and allowing the current of compressed air to rush through the valve-box in the direction of the arrows.

The valve-box I) is of same construction as B, the elect-ro-magnet in this case being connected to the wires 0 and g.

Now, returning to Fi 2, it will be seen. that if the flap-valve 7) is in its closed position, (that is to say, during the patients exhalation through the I1ose,) the electric current from the battery E goes through wire 0, flap '1), contact (Z, wire 6, to valve 1), keeping the latter closed, so that at this period no compressed air is admitted from the breathing-belt G into the inhalation-mask. During this period the contact d is not in connection.

with the wire f, and therefore no electric cur rent communicated to valve B, this latter being opened by its spring, and compressed air is admitted from the accumulator A into the breathing-belt 0, this belt being expanded and pressed against the thorax. As soon as the inhalation period of the patient coinmences he will, by the effect of the inhalation, raise the flap-valve Z), thus immediately interrupting the current-connection with the valve D, which now opens under the influence of its spring and allows the compressed air to rush from the belt 0 into the mouth-piece of the mask. As at the same time the flapvalve 1) has brought its contact d against the wire f, the electric current goes from E through wire 0, flap-valve I), contact d, and wire f to valve B, where the electric current will cause this valve to close, thereby interrupting the admission of air from A to C. The play of these valves B and D is, as is now readily understood, caused by the alternate contact of the flap-valve b with the ends of the wire 0 and 7, so that the admission of compressed air into the breathing-belt C is interrupted when this latter discharges its contents of compressed air by the valve 1) into the mouth-piece of the mask, while the admission of compressed air into the belt C from the accumulator A through valve B takes place during the exhalation period of the patient, said admission of compressed air into the breathing-belt C causing the latter to expand and to press against the thorax during the exhalation period of the patient, which pressure will greatly facilitate the exhalation process of the patient.

The alternate closing of the valves B and D maybe effected by the action of the springs and opened by the electro-magnet. If in. the apparatus specified a device for compressing air is employed which is capable of delivering a current of air of uniform and steady pressure, the accumulator A may be dispensed with, and the piping from the aircompressing device may be directly fitted to the box of the valve B. However, the use of an accumulator like A may be preferred for insuring of uniform operation. and steady pressure of air.

I claim as my invention 1. An apparatus for the treatment of emphysema by compressed air, in which apparatus an intermediate air-vessel breathingbelt, O, is in serted between the air-accumulator or air-holding device and the inhalation mouth-piece, the walls of such breathingbelt being different in their expansibilty, the most expansible wall being adapted to contact with the thorax of the patient, and an automatic supply of compressed air to expand the belt during the exhalation period of the pa tient, to act against the thorax of the patient, substantially as specified.

2. The combination, in the apparatus specified, of a m outh-pieee, an air-accumulator, the coimccting-tubes, and a breathing-belt, and a for opening and closing the respective pipes, electro-magnets for acting on those valves, and a circuit-closing device, and Wires to the magnets for closing first one valve and then the-other, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.




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Cooperative ClassificationA61H31/02