Coordinated resuscitation perfusion support

Patent metadata

Field	Value
Publication number	US-9242115-B2
Application number	US-201414294777-A
Country	US
Kind code	B2
Filing date	Jun 3, 2014
Priority date	Apr 8, 2011
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

This document relates to systems and techniques for the treatment of a cardiac arrest victim via electromagnetic stimulation of physiologic tissue.

First claim

What is claimed is:

1. A medical system for providing electromagnetic stimulation of a patient, comprising:
a sensor positioned to sense the presence of manual chest compressions administered to the patient by a rescuer;
a processor arranged to receive data generated by the sensor and detect changes in the administration of the chest compressions; and
circuitry configured for delivery of electromagnetic stimulation to the patient to stimulate blood flow in the patient upon detection of a change comprising a degradation in quality in the administration of the chest compressions.

2. The system of claim 1 , wherein the degradation in the quality of the chest compressions comprises a change in depth of the chest compressions.

3. The system of claim 1 , wherein the degradation in the quality of the chest compressions comprises a change in compression release of the chest compressions.

4. The system of claim 1 , wherein the processor is configured to detect changes in the administration of the chest compressions by detecting an absence of chest compressions for a period of time greater than a threshold.

5. The system of claim 1 , wherein the processor is configured to detect changes in the administration of the chest compressions by detecting an absence of chest compressions for a period of time greater than 2 seconds.

6. The system of claim 1 , wherein the processor is configured to detect changes in the administration of the chest compressions by comparing data generated by the sensor during a first time period with data generated by the sensor during a second time period that occurs after the first time period.

7. The system of claim 1 , wherein the sensor is configured to detect motion of the patient's sternum.

8. The system of claim 1 , wherein the sensor comprises a motion sensor.

9. The system of claim 1 , wherein the sensor comprises a pressure sensor.

10. The system of claim 1 , wherein the sensor comprises a velocity sensor.

11. The system of claim 1 , wherein the circuitry configured for delivery of electromagnetic stimulation is further configured to deliver the electromagnetic stimulation automatically and without user intervention.

12. The system of claim 1 , wherein the circuitry configured for delivery of electromagnetic stimulation comprises an electrode assembly affixed to the patient's thorax.

13. The system of claim 12 , wherein the electrode assembly is removably affixed to the patient's thorax.

14. The system of claim 1 , wherein the circuitry comprises circuitry configured to deliver a pulse packet of 100-200 microsecond duration pulses with inter-pulse spacing of 5-15 milliseconds and an amplitude of 300-700 volts.

15. The system of claim 1 , wherein the circuitry comprises circuitry configured to deliver a pulse packet of 20-1000 microsecond duration pulses with a duty cycle of 2-95% and an amplitude of 50-2000 volts.

16. The system of claim 1 , further comprising a display device configured to visually prompt the rescuer to resume manual chest compressions upon initiation of delivery of the electromagnetic stimulation to the patient.

17. The system of claim 1 , further comprising a speaker configured to provide an audio prompt the rescuer to resume manual chest compressions upon initiation of delivery of the electromagnetic stimulation to the patient.

18. The system of claim 1 , wherein the processor is configured to detect changes in the administration of the chest compressions by detecting a degradation in the quality of chest compressions.

19. The system of claim 18 , wherein the circuitry is configured to deliver the electromagnetic stimulation simultaneously with the administration of the manual chest compressions by the rescuer upon detection of the degradation in the quality of chest compressions.

20. The system of claim 1 , wherein the processor is arranged to detect the degradation in the quality of the chest compressions based, at least in part, on one or more of change point analysis and Shewhart control charts.

21. The system of claim 1 , wherein detection of the degradation in the quality of the chest compressions comprises detection of a compression depth of less than 2 inches.

22. The system of claim 1 , wherein detection of the degradation in the quality of the chest compressions comprises detection of a compression rate of slower than one compression every 600 milliseconds.

Assignees

• Zoll Medical Corp

Inventors

• Freeman Gary A

Classifications

• A61H2230/06

  Heartbeat rate · CPC title

• A61N1/0452

  Specially adapted for transcutaneous muscle stimulation [TMS] · CPC title

• A61N1/3993

  User interfaces for automatic external defibrillators · CPC title

• A61H2201/5064

  Position sensors · CPC title

• A61N1/39044

  in combination with cardiopulmonary resuscitation [CPR] therapy · CPC title