Integrated system for cardiopulmonary resuscitation and circulation support

• US 4,397,306 A
• Filed: 03/23/1981
• Issued: 08/09/1983
• Est. Priority Date: 03/23/1981
• Status: Expired due to Term

• Current Assignee: Johns Hopkins University
• Original Assignee: Johns Hopkins University
• Inventors: Tsitlik, Joshua E., Weisfeldt, Myron L., Chandra, Nisha
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Brown, David
• Application Number:
  US06/246,436
• Time in Patent Office: 869 Days
• Field of Search: 128/24 R, 128/28, 128/30, 128/30.2, 128/205.25, 128/205.26, 434/265
• US Class Current: 601/41
• CPC Class Codes: A61H 2201/0103 inflatable
• CPC Class Codes: A61H 2201/1238 with hydraulic or pneumatic drive
• CPC Class Codes: A61H 2201/165 Wearable interfaces
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 2201/5043 Displays
• CPC Class Codes: A61H 2205/083 Abdomen
• CPC Class Codes: A61H 2230/04 Heartbeat characteristics, e.g. E.G.C., blood pressure modulation
• CPC Class Codes: A61H 31/00 Artificial respiration or heart stimulation, e.g. heart massage artificial respiration by treatment with gas or air, e.g. mouth-to-mouth respiration A61M16/00; applying electric currents by contact electrodes for stimulation, e.g. heart pace-makers A61N1/36 ; teaching or training models, demonstration models for medical purposes G09B23/288
• CPC Class Codes: A61H 31/005 with feedback for the user
• CPC Class Codes: A61H 31/006 Power driven
• CPC Class Codes: A61H 31/008 Supine patient supports or bases, e.g. improving air-way access to the lungs
• CPC Class Codes: A61H 9/0078 with intermittent or alternately inflated bladders or cuffs mattresses for preventing bed-sores with alternated pressurized chambers A61G7/05776
• CPC Class Codes: A61M 16/0009 with sub-atmospheric pressure, e.g. during expiration
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor

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.

Claims

1. 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.

2. 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.

3. A system according to claim 1 including means for monitoring ECG associated with said controller.

4. A system according to claim 1 wherein the chest compression means includes a thumper.

5. A system according to claim 1 wherein the chest compression means includes an inflatable jacket.

6. A system according to claim 1 wherein the abdomen restriction means applies constant restriction.

7. A system according to claim 1 wherein the control means comprises a computer.

8. A system according to claim 1 wherein the abdomen restriction means applies pulsating restriction.

9. 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.