US2486667A - Artificial respirator - Google Patents

Artificial respirator Download PDF

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Publication number
US2486667A
US2486667A US60345845A US2486667A US 2486667 A US2486667 A US 2486667A US 60345845 A US60345845 A US 60345845A US 2486667 A US2486667 A US 2486667A
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Prior art keywords
belt
housing
slide
device
artificial
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Expired - Lifetime
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Albert R Meister
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Albert R Meister
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00Artificial respiration or heart stimulation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00Artificial respiration or heart stimulation
    • A61H31/004Heart stimulation
    • A61H31/006Power driven
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H31/00Artificial respiration or heart stimulation
    • A61H2031/003Artificial respiration or heart stimulation with alternated thorax decompression due to lateral compression
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16Physical interface with patient
    • A61H2201/1602Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/165Wearable interfaces

Description

Nov. 1, 1949.

Filed July 6, 1945 A. R. MEISTER 2,486,667

ARTIFICIAL RESPIRATOR 2 Shee Ls-Sheet 1 INVENTOR zijQMezlsZer ATTORNEYS Nov. 1, 1949.

A. R. MEISTER ARTIFICIAL RESPIRAIOR 2 Sheets-Sheet 2 Filed July 6, 1945 BY m 714124. 21/

ATTORNEYS Patented Nov. 1, 1949 UNITED STATES PATENT OFFICE 8 Claims. 1

This invention is directed to, and it is an object to provide, a power actuated device for producing artificial respiration of persons who have been drowned or asphyxiated, or whose respiratory systems, because of paralysis, have need of artificial stimulation. The device is arranged to efiect the same type of artificial respiration as is conventionally done by hand.

A further object of the invention is to provide a power actuated artificial respirator which includes a relatively wide belt adapted to encircle the chest diaphragm of the person to be treated; there being an actuator connected between opposite ends of the belt arranged to successively tighten and loosen such belt whereby to produce the desired compression-expansion cycles.

An additional object is to provide an artificial respirator, as in the preceding paragraph, in which the belt is quickly adjustable in length, and there being compression pads on the belt in easily adjustable relation; all whereby the device may be properly afiixed without time loss in emergency cases.

Another object of the invention is to provide a power actuated artificial respirator which is constructed so that the number of impulses or compression-expansion cycles of the device is correct for maximum effectiveness; such timing being difficult to accomplish in manual artificial respiration.

A further object of the invention is to produce a simple and inexpensive device, and yet one which will be exceedingly efiective for the purpose for which it is designed.

These objects are accomplished by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views:

Figure l is an elevation of the device.

Figure 2 is a cross section on line 2-2 of Fig. 1.

Figure 3 is a bottom plan view of the actuator, partly broken away.

Figure 4 is an end view of the actuator, partly broken away.

Figure 5 is a fragmentary cross section on line 5-5 of Fig. 3.

Referring now more particularly to the characters of reference on the drawings, the artificial respirator comprises an elongated relatively wide flexible belt I of canvas or the like; such belt being provided, intermediate its ends and on its inner face, with a pair of compression units, as indicated generally at 2. Each compression unit comprises a plurality of compression pads 3 disposed in side by side relation and extending transversely of the belt for the full width thereof; said pads being connected together at adjacent sides, as at 4.

Each compression unit 2 is longitudinally slidably adjustably secured to the belt I by encircling metallic straps 5, whereby said units 2 may be disposed on the belt I in proper position, as will hereinafter appear.

At the adjacent initially free ends the belt I is coupled to a power actuator, indicated generally at 6, and which comprises the following:

A relatively small box-like housing I is disposed at the top of the device, and adjacent one end includes a pair of spaced depending ears 3 connected together below said housing by a cross pin 9. One end of the belt I is provided with a slip-type clamping buckle I0, from which a loop I I projects and through which loop the cross pin 9 engages. By reason of the use of the slip-type clamping buckle ID the effective length of the belt I can be readily and quickly adjusted as is necessary in an emergency device.

The belt I is connected in quick coupling relation with a housing supported slide I2 by the following means:

The adjacent end of the belt I has a transversely extending hinge part l3 fixed thereto by rivets I4, while the complementary hinge part, i. e. the complementary hinge sleeves I5, is fixed on the bottom of the slide I2 in transversely extending, spaced relation. When the device is in use the hinge part I3 is coupled to the hinge sleeves I5 by means of a removable cross pin I6.

Within the housing I there is power mechanism operative to reciprocate the slide I2 at a predetermined rate of reciprocation, and such mechanism comprises the following:

The slide I 2 is fitted, along opposite sides, with guide bars I! which ride in channels I8 formed along opposite sides of a bottom plate I9 of the housing I. The slide I2 is formed, intermediate its ends, with a relatively wide, longitudinally extending depression, as shown, to permit of the mounting of certain of the working parts on the bottom plate I9 in the manner as will hereinafter appear.

Between the top and the bottom plate I!) of the housing the latter encloses a relatively small electric motor 20 adapted to be energized through the medium of an electric cord 2! which extends out of the housing to a source of electric current, which may for example-be a battery on the emergency vehicle which carries the artificial respirator. The motor 26 driving through a reduction gear train, indicated generally at 22, rotates a stub shaft '23 which extends through the bottom plate I9, and said shaft, between the bot tom plate I9 and slide I2, is fitted with a crank disc 24 which carries an ofiset roller 25. The offset roller 25 rides in a transverse channel 26 fixed on the slide I2 intermediate its ends. It will thus be seen that upon operation of the motor 20, with resultant but relatively slow-speed turnon the belt shortening stroke of the slide l2, a.

I swing lever 21 is pivoted to the under side of the bottom plate l9, as at 28, and at itsopposite end the lever includes a roller 29. which rides against one side of the transverse channel '26. The lever 21 is spring-urged in a directionto impart belt tightening movement to the slide [2 by means of a relatively heavy-duty tension spring 30 connected between the lever 21, intermediate its ends, and a point on the bottom plate 19, as at 3!. This spring 3!] not only assists or boosts the motor on the belt-tightening stroke of the slide l2, but also imparts what may be termed a spring action to the tightening of said belt, whereby to enhance the respiration producing action of the device.

When the above described device is in use the victim of drowning, for example, or asphyxiation, is placed face downward, as is customary for artificial respiration. Thereafter the belt is extended about the diaphragm portion of the person, with the housing I centered on the persons back; this being easily and quickly accomplished by means of the coupling including the hinge part 13 and removable cross pin 16. After the belt I is so placed, the compression units 2 are adjusted to correct position on opposite sides of the persons diaphragm, and the slip-type clamping buckle adjusted to tension said belt I.

With the device in place, the motor is started, which causes a constant but relatively slow reciprocation of the slide I 2, and a recurring compression and expansion cycle of the assembly of belt I and compression units 2. The device thus produces mechanically, and through the medium of the described arrangement, the same type of artificial respiration which is conventionally accomplished manually. However, with the power actuated device the timing is more accurate and the compression-expansion cycle is more effective, for the reason that the same amount of compression is applied during each cycle, and then relieved at the proper time in such cycle.

In asphyxiationthe supine position can be used with the motor housing resting on the front of the body, while in paralysis of the lungs, the position most comfortable to the victim can be used.

From the foregoing description it will be readily seen that there has been produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described the invention, the following is claimed as new and useful and upon which Letters Patent is desired:

1. An artificial respirator comprising a flexible belt adapted to extend about a persons body, a power driven actuator including a housing, one end of the belt being attached to said housing, a slide on the housing movable lengthwise of the belt, the other end of the belt being attached to the slide, and power means in the housing operative to reciprocate the slide.

2. An artificial respirator as in claim 1 in which said power means includes an electric motor in the housing.

3. An artificial respirator comprising a flexible belt adapted to extend about a persons body, a power driven actuator including a housing, one end of the belt being attached to the housing, a slide on the housing movable lengthwise of the belt, the other end of the belt being attached tothe slide, an electric motor and reduction gear unit in the housing, a crank driven from said unit, and meansbetween the crank and slide operative to reciprocate the latter upon rotation of the crank; there being a spring arranged to resist movement of the slide in one direction.

4. An artificial respirator comprising a flexible belt adapted to extend about a persons body, a housing, a slide mounted on the housing for movement lengthwise of the belt, the ends of the belt being attached to the housing and slide, respectively, an electric motor and reduction gear unit mounted in the housing, a crank journaled in the housing and driven by said unit, and means between the crank and slide to reciprocate the latter when the crank rotates.

5. An artificial respirator comprisin a flexible belt adapted to extend about a persons body, a housing, a slide mounted on the housing for movement lengthwise of the belt, the ends of the belt being attached to the housing and slide, respectively, an electric motor and reduction gear unit mounted in the housing, a crank journaled in the housing and driven by said unit, and means between the crank and slide to reciprocate the latter when the crank rotates; said means including a transverse channel on the slide, the crank including a roller riding in the channel;

6. A device as in claim 5 including a lever pivoted on the housing for swinging movement in the direction of the movement of the slide, a roller on the lever bearing against one side of the channel, and a spring connected to said lever and housing and urging the same toward the channel.

7. An artificial respirator comprising a pair'of parallel, relatively reciprocable members, means to reciprocate the same, a belt adapted to be disposed about a human body, one end of the belt being attached to one of the members and the other end of the belt being attached to the'other member in spaced relation relative to the first named connection, whereby upon reciprocation of said members the ends of the belt will be alternately pulled toward each other and pushed apart.

8. A respirator as in claim 7, in which the member-reciprocating means includes an electric motor mounted onone member, and a crank driven by the motor, said crank having a sliding drive connection with the other member.

ALBERT R. MEISTER.

REFERENCES CITED 1 The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 517,194 Rostel Mar. 27, 1894 1,783,171 Knott Nov. 25, 1930 1,802,140 De Remer Apr. 21, 1931 1,848,212 Waterman Mar. 8 1932 2,103,956 Schumacher Dec. 28, 1937 2,314,981 Heard Mar. 30. 1943

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425409A (en) * 1965-11-08 1969-02-04 Max Isaacson Resuscitator
US3491751A (en) * 1965-10-24 1970-01-27 Walter Wolfing Mechanical chest compressor
US4770164A (en) * 1980-10-16 1988-09-13 Lach Ralph D Resuscitation method and apparatus
US6066106A (en) * 1998-05-29 2000-05-23 Emergency Medical Systems, Inc. Modular CPR assist device
US6142962A (en) * 1997-08-27 2000-11-07 Emergency Medical Systems, Inc. Resuscitation device having a motor driven belt to constrict/compress the chest
US6390996B1 (en) 1998-11-09 2002-05-21 The Johns Hopkins University CPR chest compression monitor
US20020082531A1 (en) * 1999-08-31 2002-06-27 Vanbrunt Nicholas P. Pneumatic chest compression vest with front panel air bladder
WO2002053083A2 (en) 2001-01-04 2002-07-11 Advanced Respiratory, Inc. Mechanical chest wall oscillator
US20030004445A1 (en) * 2001-05-25 2003-01-02 Revivant Corporation CPR compression device and method
US20030011256A1 (en) * 2001-06-07 2003-01-16 Matsushita Electric Industrial Co., Ltd. Hydrodynamic gas bearing
US6616620B2 (en) 2001-05-25 2003-09-09 Revivant Corporation CPR assist device with pressure bladder feedback
US20040158177A1 (en) * 1999-08-31 2004-08-12 Van Brunt Nicholas P. Pneumatic chest compression vest with front panel bib
US20050054956A1 (en) * 2003-09-08 2005-03-10 Gagne Donald J. Single patient use vest
US20050080361A1 (en) * 2003-10-14 2005-04-14 Revivant Corporation Compression belt system for use with chest compression devices
US20050080360A1 (en) * 2003-10-14 2005-04-14 Revivant Corporation Safety mechanisms for belt cartridge used with chest compression devices
US7056295B2 (en) * 1998-11-09 2006-06-06 Halperin Henry R Automated chest compression apparatus
EP1714630A1 (en) * 1995-12-15 2006-10-25 Deca-Medics, Inc. Chest compression apparatus for cardiac arrest
US20070239087A1 (en) * 2005-10-14 2007-10-11 Hill-Rom Services, Inc. Variable stroke air pulse generator
US20080242916A1 (en) * 2005-10-16 2008-10-02 Yuval Avni Eecp Device and an Image System Comprising the Same
US7442173B1 (en) 1997-08-27 2008-10-28 Zoll Circulation, Inc. Resuscitation device with friction liner
USRE40814E1 (en) 1996-06-11 2009-06-30 Hill-Rom Services, Inc. Oscillatory chest compression device
US20110066093A1 (en) * 2009-09-15 2011-03-17 Tyco Healthcare Group Lp Portable, self-contained compression device
US8460223B2 (en) 2006-03-15 2013-06-11 Hill-Rom Services Pte. Ltd. High frequency chest wall oscillation system
US8827721B2 (en) 2012-06-08 2014-09-09 Zoll Medical Corporation Method of measuring abdominal thrusts for clinical use and training
US9149412B2 (en) 2012-06-14 2015-10-06 Zoll Medical Corporation Human powered mechanical CPR device with optimized waveform characteristics
US9220443B2 (en) 2013-10-31 2015-12-29 Zoll Medical Corporation CPR chest compression monitor for infants
US9549869B2 (en) 2012-06-29 2017-01-24 Hill-Rom Canado Respiratory Ltd. Wearable thorax percussion device
US9744097B2 (en) 2012-06-29 2017-08-29 Hill-Rom Services Pte. Ltd. Wearable thorax percussion device
US9913776B1 (en) 2007-05-18 2018-03-13 Sunlife Science Inc. Enhanced chest compressor
US10076462B2 (en) 2016-04-27 2018-09-18 Radial Medical, Inc. Adaptive compression therapy systems and methods

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US1802140A (en) * 1928-03-30 1931-04-21 J G De Remer Res Corp Portable massage machine
US1848212A (en) * 1930-06-19 1932-03-08 Bell Telephone Labor Inc Apparatus for producing artificial breathing
US2103956A (en) * 1936-11-24 1937-12-28 Schumacher August Massage machine
US2314981A (en) * 1940-02-14 1943-03-30 Edward C Heard Vibrator attachment for washing machines

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US1802140A (en) * 1928-03-30 1931-04-21 J G De Remer Res Corp Portable massage machine
US1783171A (en) * 1929-06-12 1930-11-25 Knott & Garllus Company Electric massaging machine
US1848212A (en) * 1930-06-19 1932-03-08 Bell Telephone Labor Inc Apparatus for producing artificial breathing
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Cited By (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491751A (en) * 1965-10-24 1970-01-27 Walter Wolfing Mechanical chest compressor
US3425409A (en) * 1965-11-08 1969-02-04 Max Isaacson Resuscitator
US4770164A (en) * 1980-10-16 1988-09-13 Lach Ralph D Resuscitation method and apparatus
EP1714630A1 (en) * 1995-12-15 2006-10-25 Deca-Medics, Inc. Chest compression apparatus for cardiac arrest
USRE40814E1 (en) 1996-06-11 2009-06-30 Hill-Rom Services, Inc. Oscillatory chest compression device
US20040215112A1 (en) * 1997-08-27 2004-10-28 Revivant Corporation Resuscitation device and method
US7077814B2 (en) 1997-08-27 2006-07-18 Zoll Circulation, Inc. Resuscitation method using a sensed biological parameter
US7517326B2 (en) 1997-08-27 2009-04-14 Zoll Circulation, Inc. Resuscitation device including a belt cartridge
US20060264789A1 (en) * 1997-08-27 2006-11-23 Mollenauer Kenneth H Resuscitation device and method
US20120191025A1 (en) * 1997-08-27 2012-07-26 Zoll Circulation, Inc. Resuscitation Device and Method
US6142962A (en) * 1997-08-27 2000-11-07 Emergency Medical Systems, Inc. Resuscitation device having a motor driven belt to constrict/compress the chest
US7442173B1 (en) 1997-08-27 2008-10-28 Zoll Circulation, Inc. Resuscitation device with friction liner
US8690805B2 (en) * 1998-05-29 2014-04-08 Zoll Circulation, Inc. CPR assist device
US7374548B2 (en) 1998-05-29 2008-05-20 Zoll Circulation, Inc. Modular CPR assist device to hold at a threshold of tightness
US20120130290A1 (en) * 1998-05-29 2012-05-24 ZOLL Circulations, Inc. CPR Assist Device
US6709410B2 (en) 1998-05-29 2004-03-23 Revivant Corporation Modular CPR assist device
US8062239B2 (en) * 1998-05-29 2011-11-22 Zoll Circulation, Inc. Method of performing CPR with a modular CPR assist device using a brake to momentarily hold a belt at a threshold of tightness
US20080300516A1 (en) * 1998-05-29 2008-12-04 Zoll Circulation, Inc. Method of Performing CPR with a Modular CPR Assist Device
US6066106A (en) * 1998-05-29 2000-05-23 Emergency Medical Systems, Inc. Modular CPR assist device
US20040193076A1 (en) * 1998-05-29 2004-09-30 Revivant Corporation Modular CPR assist device
US20060229535A1 (en) * 1998-11-09 2006-10-12 John Hopkins University Automated chest compression apparatus
US20090204036A1 (en) * 1998-11-09 2009-08-13 The Johns Hopkins University Automated Chest Compression Apparatus
US7517325B2 (en) 1998-11-09 2009-04-14 The Johns Hopkins University Automated chest compression apparatus with a bladder between the belt and the patient
US6865413B2 (en) 1998-11-09 2005-03-08 Revivant Corporation ECG signal processor and method
US20110034836A1 (en) * 1998-11-09 2011-02-10 Johns Hopkins University Wrist Mounted CPR Chest Compression Monitor
US8968224B2 (en) 1998-11-09 2015-03-03 Johns Hopkins University CPR chest compression monitor and method of use
US7429250B2 (en) 1998-11-09 2008-09-30 The Johns Hopkins University CPR chest compression monitor and method of use
US20150148717A1 (en) * 1998-11-09 2015-05-28 Johns Hopkins University Automated chest compression apparatus
US7074199B2 (en) 1998-11-09 2006-07-11 Revivant Corporation CPR chest compression monitor and method of use
US20070135739A1 (en) * 1998-11-09 2007-06-14 Johns Hopkins University Cpr chest compression monitor and method of use
US20020165471A1 (en) * 1998-11-09 2002-11-07 Halperin Henry R. ECG signal processor and method
US20060247560A1 (en) * 1998-11-09 2006-11-02 The Johns Hopkins University Cpr chest compression monitor and method of use
US7056295B2 (en) * 1998-11-09 2006-06-06 Halperin Henry R Automated chest compression apparatus
US9398999B2 (en) 1998-11-09 2016-07-26 The Johns Hopkins University CPR chest compression monitor and method of use
US9597257B2 (en) * 1998-11-09 2017-03-21 The Johns Hopkins University Automated chest compression apparatus
US6390996B1 (en) 1998-11-09 2002-05-21 The Johns Hopkins University CPR chest compression monitor
US7108665B2 (en) 1998-11-09 2006-09-19 Zoll Circulation, Inc. CPR chest compression monitor
US8147433B2 (en) 1998-11-09 2012-04-03 Johns Hopkins University CPR chest compression monitor and method of use
US20040176709A1 (en) * 1999-08-09 2004-09-09 Van Brunt Nicholas P. Mechanical chest wall oscillator
US6736785B1 (en) 1999-08-09 2004-05-18 Advanced Respiratory, Inc. Mechanical chest wall oscillator
US20020082531A1 (en) * 1999-08-31 2002-06-27 Vanbrunt Nicholas P. Pneumatic chest compression vest with front panel air bladder
US20040158177A1 (en) * 1999-08-31 2004-08-12 Van Brunt Nicholas P. Pneumatic chest compression vest with front panel bib
US6916298B2 (en) 1999-08-31 2005-07-12 Advanced Respiratory, Inc. Pneumatic chest compression vest with front panel air bladder
WO2002053083A3 (en) * 2001-01-04 2004-02-26 Advanced Respiratory Inc Mechanical chest wall oscillator
WO2002053083A2 (en) 2001-01-04 2002-07-11 Advanced Respiratory, Inc. Mechanical chest wall oscillator
US6939315B2 (en) 2001-05-25 2005-09-06 Revivant Corporation CPR chest compression device
EP1857086A2 (en) * 2001-05-25 2007-11-21 ZOLL Circulation, Inc. CPR assist device with pressure bladder feedback
US9795532B2 (en) * 2001-05-25 2017-10-24 Zoll Circulation, Inc. CPR compression device and method
US6616620B2 (en) 2001-05-25 2003-09-09 Revivant Corporation CPR assist device with pressure bladder feedback
US6939314B2 (en) 2001-05-25 2005-09-06 Revivant Corporation CPR compression device and method
US20030004445A1 (en) * 2001-05-25 2003-01-02 Revivant Corporation CPR compression device and method
US20040002667A1 (en) * 2001-05-25 2004-01-01 Revivant Corporation CPR device with pressure bladder feedback
US20040006290A1 (en) * 2001-05-25 2004-01-08 Revivant Corporation CPR chest compression device
US20060009717A1 (en) * 2001-05-25 2006-01-12 Revivant Corporation CPR compression device and method
US8298165B2 (en) 2001-05-25 2012-10-30 Zoll Circulation, Inc. CPR assist device adapted for anterior/posterior compressions
US20040225238A1 (en) * 2001-05-25 2004-11-11 Revivant Corporation CPR assist device adapted for anterior/posterior compressions
EP1857086A3 (en) * 2001-05-25 2007-12-05 ZOLL Circulation, Inc. CPR assist device with pressure bladder feedback
US7131953B2 (en) * 2001-05-25 2006-11-07 Zoll Circulation, Inc. CPR assist device adapted for anterior/posterior compressions
US7008388B2 (en) 2001-05-25 2006-03-07 Revivant Corporation CPR chest compression device
US7666153B2 (en) 2001-05-25 2010-02-23 Zoll Circulation, Inc. CPR compression device and method including a fluid filled bladder
US20100241039A1 (en) * 2001-05-25 2010-09-23 Zoll Circulation, Inc. CPR Compression Device and Method
US7056296B2 (en) 2001-05-25 2006-06-06 Zoll Circulation, Inc. CPR device with pressure bladder feedback
US20030011256A1 (en) * 2001-06-07 2003-01-16 Matsushita Electric Industrial Co., Ltd. Hydrodynamic gas bearing
WO2004004548A3 (en) * 2002-07-10 2004-05-13 Revivant Corp Cpr compression device and method
EP2468232A3 (en) * 2002-07-10 2014-09-10 ZOLL Circulation, Inc. CPR compression device
US7316658B2 (en) 2003-09-08 2008-01-08 Hill-Rom Services, Inc. Single patient use vest
US20050054956A1 (en) * 2003-09-08 2005-03-10 Gagne Donald J. Single patient use vest
US8758278B2 (en) * 2003-10-14 2014-06-24 Zoll Circulation, Inc. Safety mechanisms for belt cartridge used with chest compression devices
US20080295851A1 (en) * 2003-10-14 2008-12-04 Zoll Circulation, Inc. Compression Belt System for Use with Chest Compression Devices
US20050080361A1 (en) * 2003-10-14 2005-04-14 Revivant Corporation Compression belt system for use with chest compression devices
US7404803B2 (en) * 2003-10-14 2008-07-29 Zoll Circulation, Inc. Safety mechanisms for belt cartridge used with chest compression devices
US7410470B2 (en) * 2003-10-14 2008-08-12 Zoll Circulation, Inc. Compression belt system for use with chest compression devices
US20050080360A1 (en) * 2003-10-14 2005-04-14 Revivant Corporation Safety mechanisms for belt cartridge used with chest compression devices
US20110237988A1 (en) * 2003-10-14 2011-09-29 Zoll Circulation, Inc. Safety Mechanisms for Belt Cartridge Used with Chest Compression Devices
US7846112B2 (en) * 2003-10-14 2010-12-07 Zoll Circulation, Inc. Compression belt system for use with chest compression devices
US20070239087A1 (en) * 2005-10-14 2007-10-11 Hill-Rom Services, Inc. Variable stroke air pulse generator
US7785280B2 (en) 2005-10-14 2010-08-31 Hill-Rom Services, Inc. Variable stroke air pulse generator
US20080242916A1 (en) * 2005-10-16 2008-10-02 Yuval Avni Eecp Device and an Image System Comprising the Same
US8460223B2 (en) 2006-03-15 2013-06-11 Hill-Rom Services Pte. Ltd. High frequency chest wall oscillation system
US9968511B2 (en) 2006-03-15 2018-05-15 Hill-Rom Services Pte. Ltd. High frequency chest wall oscillation system
US9913776B1 (en) 2007-05-18 2018-03-13 Sunlife Science Inc. Enhanced chest compressor
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