US2484306A - Artificial respirator - Google Patents

Description

Inventors 2 Sheets-sheaf 1 ,Ed Mt C/ain, Deceased, I 4 by Joyce M.McC/ain,Admin/srram;r,

E. MCCLAIN ET AL ARTIFICIAL RESPIRATOR- Oct. 11, 1949.

Filed March :50, 1948 Oct. 11, 1949. E. McCLAIN ET AL 2,484,306

I ARTIFICIAL RESPIRATQR I Filed March so, 1948 2 Sheets-Sheet 2 Fig.3. /8-

I11 vento rs Ed M66701)? Deceased, by Joyce M. McClain, Adminis/mfrix, and Byron M. Kay

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Patented Oct. 11, 1949 ARTIFICIAL RESPIRATOR- Ed McClain, deceased, late of Langley, Okla, by

Joyce M. McClain, administratrix, Tulsa, and Byron M. Kay, Disney, Okla.

Application March 30, 1948, Serial No. 1 7,918

4 Claims.

This invention relates to new and useful improvements in artificial respirators and. the primary object of the present invention is to provide a resuscitating device for simulating and restoring the natural breathing of a human being when breathing is stopped due to drowning, asphyxiation, electrical shock and the like.

Another object of the invention is to provide an artificial respirator including novel and improved back engaging means so designed as to facilitate the same to conveniently engage and to apply pressure upon the back of an incapacitated human being as the same are actuated mechanically or by motor means.

A further object of the present invention is to provide an artificial respirator including a base member that may be quickly and readily slipped beneath a patient without the necessity of having to raise or to shift the patients body.

Another object of the present invention is to provide an artificial respirator including an actuatable plunger and novel and improved means for actuating or reciprocating said plunger in a predetermined manner.

A further object of the present invention is to provide a device of the aforementioned character, the parts of which are easily adjustable facilitating the same to be applicable for patients of various sizes.

A still further aim of the present invention is to provide an artificial respirator that is simple and practical in construction, strong and reliable in use, light and compact in structure, neat and attractive in appearance, relatively inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fuly hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a front elevational view of the present resuscitating apparatus;

Figure 2 is an end view of Figure 1;

Figure 3 is a top plan view of Figure 1;

Figure 4 is a transverse horizontal sectional view taken substantially on the plane of section line 44 of Figure 1; and,

Figure 5 is an enlarged fragmentary view, partly in section and partly in elevation, taken substantially on the plane of section line 55 of Figure 4.

Referring now to the drawings in detail wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral l0 represents a substantially rectangular or square base member, one edge l2 of which is rigidly secured to an upright 14 having a reduced substantially rectangular portion 16 that is provided with a vertical slot or opening l8.

Slidably mounted on the reduced upper portion I6, is a channel-shaped arm 20 that is provided with a fixed fastener 22 slidably mounted in the slot I8. An adjustable, preferably wing nut 24 is mounted on the fastener and frictionally bears against the outer face of arm 20, for selective adjustment of the arm 20 relative to the reduced upper portion "5 of the upright I4.

Preferably integrally formed with the upper portion of arm 20, is a support plate or frame 26, that is spaced parallel to the base ID and at right angles to the arm 20. Rigidly secured on the upper face of the plate 26, is a pair of spaced journal supports 28 that are provided with suitable bearings 30 in which there is rotatably mounted a shaft 32, one end 34 of which extends loosely through the slot 18 and is secured to a fixed crank 36 and a V-pulley 38. The crank 36 is provided with a rotatable hand grip 4B for the convenient rotation of the shaft 32 in the bearings 30.

Fixed to the lower face of the support plate 26 and opposing a suitable aperture provided in the plate 26, is a guide member 42 in which there is slidably mounted, for vertical movement, a substantially rectangular plunger 44, the lower end of which is rigidly secured to a cross or guide member 46 that is spaced parallel to the support plate 26 and which is provided with suitable graduations or indicia 48. This plunger 44 is loosely embraced by a coil spring or the like having one of its terminals secured to the outer periphery of, the guide member 42 and its opposite terminal secured to the member 46, for normally retaining the member 46 in a raised position relative to the support plate 26.

Fixed on the shaft 32, is an eccentric wheel or cam 48 that is adapted to frictionally engage a channeled groove or recess 50 provided in the upper end of the plunger 44, for reciprocating or actuating the plunger downwardly.

Slidably mounted on the guide member 46, is a pair of channel-shaped brackets 52 that are provided with adjustable set screws 54 for selective adjustment of the brackets relative to the guide member 46 and more particularly to the indicia 48 on the upper face of the guide member.

Integrally formed with the brackets 52, is a pair of depending carrier rods or fixed arms 56, the lower ends of which terminate in balls or spherical elements 58 that frictionally engage sockets or ball seats 60. Projecting outwardly from the base or flanged portion 62 of the ball seats 60, are externally threaded shafts 65 that receivably engage internally threaded cups or sleeves 66 which are recessed in the upper substantially fiat surfaces 68 of a pair of resilient back engaging members 10. The lower faces 72 of these back engaging members are curved or arcuated to conform to the small of the back of a human being.

The procedure for operating the device is as follows: The base plate II] is placed underthe patients stomach with the center of the upright l4 opposite the patients lower rib; the arm 20 is adjusted relative to the extension l6 so that the back plate Ill rests upon the patients back;

the bracket adjusting screws 54 are loosened so that the back plates or back engaging members 10 may fit the small of the patients back, the rear edge of the back plates just touching the lower rib of the patient. with the tip of the back plates almost out of sight. With the back plates in this position, the screws 24 and 54 are tightened; the crank handle 40 is then rotated causing a rotation of the shaft 30, thus causing the rotating cam 48 to bear onthe end of the plunger 44, which moves downwardly causing the back plates to gradually apply pressure to the small of the back. In this manner, thelungs are compressed. causing thepatient to exhale; and, when the long tip of the cam 48 has caused the plunger ill to reach its limit of travel and, thus apply maximum pressure to .the small of the back, further rotation of the crank handle 40 will cause the plunger to be extended in, its normal position due to the urging of the springs 59, thus suddenly and completely releasing. pressure on the patients back. In this manner, the lungs are. permitted to expand, thereby causing the patient to inhale. Thus, repeated deliberately 12 or 15 times per minute, the double movement of pressure and release, a complete respiration is achieved in four or five seconds.

Obviously, a suitable endless belt may be employed for connecting the pulley 38 to the drive shaft of a suitable motor, whereby the shaft 32 will rotate at a normal ,rate ,of speed and the cam 48 will actuate the plunger to apply and release pressure upon the patients back.

In View of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the construction, operation and advantages of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even thoughthere is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention what is claimed as new is:

1. An artificial respirator comprising a base, a rigid upright carried by said base, an arm adjustably mounted on said upright, a frame carried by said arm, a plunger slidably carried by said frame, means carried by said frame guiding the sliding movement of said plunger, means for reciprocating said plunger, a movable guide fixed on said plunger, rigid arms depending from said guide, means adjustably mounting said rigid arms on said guide, back engaging members, and means connecting said back engaging members to said rigid arms for universal movement relative to the latter.

The combination of claim 1 wherein said means for reciprocating said plunger includes a rotatable shaft, means for actuating said shaft, and cam connecting means between said shaft and said plunger, said cam connecting means. including an eccentric cam fixed on said shaft,

and a channeled groove provided in said plunger for receiving said cam.

3. An artificial respirator comprising a base, a

rigid upright carried by said base, an arm slidably and adjustably mounted onsaid upright. for

vertical movement, an angular substantially horizontal support fixedly carried by said arm, a plurality of journal bearings carried by said support, a shaft journalled. for rotation on saidbeari-ngs, a substantially vertical plunger slidably mounted on said support for vertical movement,

means guiding the vertical movement of-saiclplunger, means normally retaining said plungerin a raised position, means carried by said shaft for actuating said plunger to a lowered position,

a movable guide fixed on said plunger, depending supports adjustably mounted on said guide, and

BYRON M. KAY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Johnson July 18, 19,33

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