Patent US4397306A successfully refreshed from Google Patents.
US4397306A
Expired / Lapsed
US
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Integrated system for cardiopulmonary resuscitation and circulation support
Assignee: Johns Hopkins University
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Filing: 1981-03-23
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Granted: 1983-08-09
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Expires: 2001-03-23
Abstract
Abstract An integrated system for cardiopulmonary resuscitation and circulation support comprising chest compression means adapted to be positioned over the patient's sternum and operable to compress the sternum at desired intervals and to a desired degree, lung ventilating means including (1) a high pressure ventilator for ventilating simultaneously with chest compression; (2) a low pressure ventilator for inflating the lungs at low pressure between a selected number of compression cycles; and (3) a negative pressure ventilator for deflating the lungs between chest compressions; valve means for selectively operating only one of the indicated ventilators at any one time; means for restricting the abdomen to exert pressure on the abdominal wall; and control means for selectively operating the chest compression means, the lung ventilating means, valve means and abdomen restriction means in a selected sequence and for the period of time desired.
Inventors
- 👤 Myron L. Weisfeldt
- 👤 Joshua E. Tsitlik
- 👤 Nisha Chandra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:38
CPC Classifications
A; A61; A61H; A61H31/00; A61H31/004; A61H31/005; A61H31/006; A61H31/008; A61H9/00; A61H9/005; A61H9/0078; A61M; A61M16/00; A61M16/0003; A61M16/0009; A61M16/0051; A61M16/021; A61M16/022; A61M16/024; A61H2201/00; A61H2201/01; A61H2201/0103; A61H2201/12; A61H2201/1238; A61H2201/16; A61H2201/1602; A61H2201/165; A61H2201/50; A61H2201/5007; A61H2201/5023; A61H2201/5043; A61H2205/00; A61H2205/08; A61H2205/083; A61H2230/00; A61H2230/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
An integrated system for cardiopulmonary resuscitation and circulation support comprising chest compression means adapted to be positioned over the patient's sternum and operable to compress the sternum at desired intervals and to a desired degree, lung ventilating means including (1) a high pressure ventilator for ventilating simultaneously with chest compression; (2) a low pressure ventilator for inflating the lungs at low pressure between a selected number of compression cycles; and (3) a negative pressure ventilator for deflating the lungs between chest compressions; valve means for selectively operating only one of the indicated ventilators at any one time; means for restricting the abdomen to exert pressure on the abdominal wall; and automatically operable control means for selectively operating the chest compression means, the lung ventilating means, valve means and abdomen restriction means in a predetermined selected sequence and for the period of time desired.
Claim 2
Dependent Claim
143 words
An integrated system for cardiopulmonary resuscitation and circulation support comprising chest compression means adapted to be positioned over the patient's sternum and operable to compress the sternum at desired intervals and to a desired degree, lung ventilating means including (1) a high pressure ventilator for ventilating simultaneously with chest compression; (2) a low pressure ventilator for inflating the lungs at low pressure between a selected number of compression cycles; and (3) a negative pressure ventilator for deflating the lungs between chest compressions; valve means for selectively operating only one of the indicated ventilators at any one time; means for restricting the abdomen to exert pressure on the abdominal wall; and automatically operable control means for selectively operating the chest compression means, the lung ventilating means, valve means and abdomen restriction means in a predetermined selected sequence and for the period of time desired.
Claim 3
Dependent Claim
31 words
The system of claim 1 including data acquisition and display means operatively associated with the control means for determining and varying the operation of said compression and ventilating means as required.
Claim 4
Dependent Claim
15 words
A system according to claim 1 including means for monitoring ECG associated with said controller.
Claim 5
Dependent Claim
14 words
A system according to claim 1 wherein the chest compression means includes a thumper.
Claim 6
Dependent Claim
15 words
A system according to claim 1 wherein the chest compression means includes an inflatable jacket.
Claim 7
Dependent Claim
14 words
A system according to claim 1 wherein the abdomen restriction means applies constant restriction.
Claim 8
Dependent Claim
13 words
A system according to claim 1 wherein the control means comprises a computer.
Claim 9
Dependent Claim
14 words
A system according to claim 1 wherein the abdomen restriction means applies pulsating restriction.
Claim 10
Dependent Claim
71 words
A method for carrying out cardiopulmonary resuscitation and circulation support in accordance with and utilizing the apparatus of claim 1 comprising the steps of applying a series of chest compressions simultaneously with high pressure airway ventilation; applying negative ventilation at the intervals when chest compression is not applied; periodically applying a synchronous low pressure ventilation in lieu of negative ventilation and restricting the abdomen simultaneously with the application of negative ventilation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |