CPR FEEDBACK METHOD AND APPARATUS

• US 20070276300A1
• Filed: 05/26/2006
• Published: 11/29/2007
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Original Assignee: Cardiac Science Operating Company (Cardica Incorporated)
• Inventors: Peterson, Peter, Olson, Kenneth F.
• Granted Patent: US 8,010,190 B2
• Time in Patent Office: Days
• US Class Current: 601/41
• CPC Class Codes: A61H 2031/002 fixed on the chest by adhesives
• CPC Class Codes: A61H 2201/10 with further special therapeutic means, e.g. electrotherapy, magneto therapy or radiation therapy, chromo therapy, infrared or ultraviolet therapy
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 2201/5043 Displays
• CPC Class Codes: A61H 2201/5048 Audio interfaces, e.g. voice or music controlled
• CPC Class Codes: A61H 2201/5058 Sensors or detectors
• CPC Class Codes: A61H 2201/5097 wireless
• CPC Class Codes: A61H 2230/00 Measuring physical parameters of the user
• CPC Class Codes: A61H 2230/207 partial O2-value
• CPC Class Codes: A61H 31/005 with feedback for the user
• CPC Class Codes: A61H 31/007 Manual driven
• CPC Class Codes: A61N 1/39044 in combination with cardiopulmonary resuscitation [CPR] therapy

Abstract

The present invention comprises a cardiopulmonary resuscitation (CPR) feedback device and a method for performing CPR. A chest compression detector device is provided that measures chest compression during the administration of CPR. The chest compression detector device comprises a signal transmitter operably positioned on the chest of the patient and adapted to broadcast a signal, and a signal receiver adapted to receive the signal. The chest compression detector device also comprises a processor, operably connected to the signal transmitter and the signal receiver. The processor repeatedly analyzes the signal received to determine from the signal a series of measurements of compression of the chest, and feedback is provided to the rescuer based on the series of measurements.

Claims

1. A chest compression detector device that measures chest compression during administration of cardiopulmonary resuscitation to a patient comprising:

a signal transmitter operably positioned on the chest of the patient and adapted to broadcast a signal;

a signal receiver adapted to receive the signal; and

a processor operably connected to the signal transmitter and the signal receiver that analyzes the signal received to determine from the signal a series of measurements of compression of the chest.

2. The chest compression detector device of claim 1, wherein the transmitter is adapted to broadcast a signal into the torso of the patient, the signal being directed toward a location selected from the group consisting of the spine of the patient, the back of the patient, the chest of the patient, a reflector plate, and any combination thereof.

3. The chest compression detector device of claim 1, wherein the signal receiver is placed in a location selected from the group consisting of the chest of the patient, the back of the patient, proximate the signal transmitter, and any combination thereof.

4. The chest compression detector device of claim 1, wherein the signal transmitter and the signal receiver are integrated in a single unit.

5. The chest compression detector device of claim 1, wherein the signal transmitter, the signal receiver, and the processor are integrated in a single unit.

6. The chest compression detector device of claim 1 wherein the transmitter is integrated into a first electrode of an automated external defibrillator, and the receiver is integrated into a second electrode of the automated external defibrillator.

7. The chest compression detector device of claim 1 further comprising a means for prompting a rescuer based on the signal analyzed by the processor.

8. An automated external defibrillator (AED) for use by a rescuer in assisting in resuscitating a patient, comprising:

a chest compression sensor operably positioned on the chest of the patient, adapted to broadcast a signal and adapted to receive the signal, wherein the chest compression sensor is operably in communication with the AED;

an AED control system being in electrical communication with the chest compression sensor, the AED control system processing a signal communicated from the chest compression sensor related to the magnitude of the chest compressions and to the frequency of chest compressions; and

an AED prompting means operably coupled to the AED control system for receiving communication signals from the AED control system and for communicating prompts to the rescuer for use by the rescuer in resuscitating the victim, the prompts being related to the signal communicated to the AED control system by the chest compression sensor.

9. The AED of claim 8, wherein the chest compression sensor comprises a transmitter adapted to broadcast a signal, and a receiver adapted to receive the signal.

10. The AED of claim 9, wherein the transmitter broadcasts a signal into the torso of a patient, the signal being directed toward a location selected from the group consisting of the spine of the patient, the back of the patient, the chest of the patient, a reflector plate, and any combination thereof.

11. The AED of claim 9, wherein the signal receiver is placed in a location selected from the group consisting of the chest of the patient, the back of the patient, proximate the signal transmitter, and any combination thereof.

12. The AED of claim 9, wherein the transmitter and the receiver are contained in a single unit.

13. The AED of claim 9, wherein the transmitter is integrated into a first electrode of the AED and the receiver is integrated into a second electrode of the AED.

14. The AED of claim 8, wherein the chest compression sensor is wirelessly communicable with the AED.

15. The AED of claim 8, wherein the prompts are selected from the group consisting of visual prompts, audible prompts, and tactile prompts.

16. A method of performing cardiopulmonary resuscitation on a patient comprising the steps of:

providing a compression detection device proximate the sternum of the patient such that the device moves in unison with the chest of the patient during compression of the chest;

broadcasting a signal from the compression detection device;

receiving the signal at the compression detection device;

compressing the chest of a patient;

using a processor operably in communication with the compression detection device to determine from the signal a series of measurements of compression of the chest relative to the spine of the patient as the step of compressing the chest of the patient is performed; and

automatically providing feedback to a rescuer performing the step of compressing the chest of the patient as part of cardiopulmonary resuscitation in response to the series of measurements that advises the rescuer whether the step of compressing the chest is being performed within a predetermined set of guidelines.

17. The method of claim 16, wherein the step of broadcasting a signal from the compression detection device further comprises broadcasting a signal from the compression detection device into the chest towards the spine of the patient.

18. The method of claim 17, wherein the step of receiving the signal at the compression device further comprises receiving the signal at the compression device following reflection of at least a portion of the signal off of the spine of the patient.

19. The method of claim 18 further comprising:

using the processor to determine a timing associated with compression of the chest based on the series of measurements of compression of the chest; and

automatically providing feedback to the rescuer performing the step of compressing the chest of the patient as part of cardiopulmonary resuscitation in response to the series of timing that advises the rescuer whether the step of compressing the chest is being performed within a predetermined set of guidelines for a recommended timing of chest compressions for cardiopulmonary resuscitation.

20. The method of claim 19, wherein the guidelines are selected from the group consisting of chest displacement, compression rate, and blood oxygen levels.