Integrated resuscitation

Patent metadata

Field	Value
Publication number	US-9713445-B2
Application number	US-201113271613-A
Country	US
Kind code	B2
Filing date	Oct 12, 2011
Priority date	Sep 30, 2004
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

A wearable resuscitation system is used for resuscitating a patient. The system comprises at least two defibrillation electrodes adapted to be worn by the patient for extended periods of time; circuitry for monitoring the an ECG of the patient; at least one processor configured for analyzing the ECG of the patient, and determining whether electrical therapy should be delivered to the at least two defibrillation electrodes; circuitry for providing defibrillation pulses to the at least two defibrillation electrodes; and circuitry for providing resuscitation prompts, wherein at least the circuitry for monitoring the ECG, the processor configured for analyzing the ECG, and the circuitry for providing resuscitation prompts are contained in one or more devices adapted to be worn by the patient.

First claim

What is claimed is:

1. A resuscitation system for resuscitating a patient, comprising:
a first unit and second unit configured to be mechanically and electrically detached and reattached from and to one another;
wherein at least portions of the first unit are configured to be supported by the patient for extended periods of time,
wherein the second unit is configured to be detached from the first unit and not supported by the patient for periods of time, and configured to be reattached to the first unit and supported by the patient when defibrillation may need to be delivered to the patient,
wherein at least one electrical connection configured to be disconnected and to be reconnected is provided between the first and second units,
at least two defibrillation electrodes adapted to be worn by the patient and composed of a skin-contacting material that can be safely held against a patient's skin for the extended periods of time;
circuitry for monitoring an ECG of the patient;
at least one processor configured for analysing the ECG of the patient, and determining whether electrical therapy should be delivered to the at least two defibrillation electrodes;
circuitry for providing defibrillation pulses to the at least two defibrillation electrodes; and
circuitry for providing prompts on chest compression or ventilation performance during resuscitation,
wherein the circuitry for monitoring the ECG, the processor configured for analysing the ECG, and the circuitry for providing the prompts form part of the first unit, and wherein the circuitry for providing defibrillation pulses forms part of the second unit.

2. The resuscitation system of claim 1 wherein the at least two defibrillation electrodes and the first unit are built into a defibrillation electrode pad assembly adapted to be worn by the patient for extended periods of time.

3. The resuscitation system of claim 1 wherein the first unit is capable of functioning and providing the prompts without being electrically connected to the second unit.

4. The resuscitation system of claim 1 wherein the prompts comprise CPR prompts.

5. The resuscitation system of claim 1 wherein the circuitry for providing at least one electrical connection between the first and second units comprises at least one cable or at least one wireless connection.

6. The resuscitation system of claim 1 wherein the second unit is connected directly to the at least two defibrillation electrodes by one or more cables that carry the defibrillation pulses to the at least two defibrillation electrodes.

7. The resuscitation system of claim 1 wherein the circuitry for providing at least one electrical connection between the first and second units comprises at least one cable for delivering the defibrillation pulses to the first unit, from where they are delivered to the at least two defibrillation electrodes.

8. The resuscitation system of claim 1 wherein the ECG signal from the patient is detected using the at least two defibrillation electrodes.

9. The resuscitation system of claim 1 wherein the first unit comprises a speaker for providing the prompts.

10. The resuscitation system of claim 1 wherein the prompts comprise spoken and visual prompts.

11. The resuscitation system of claim 1 further comprising a microphone and circuitry for storing sounds recorded during use of the system.

12. The resuscitation system of claim 1 further comprising an electrode pad assembly supporting the at least two defibrillation electrodes and a handle attached to the electrode pad assembly for providing an upward lifting force on the chest of the patient.

13. The resuscitation system of claim 1 further comprising an activity sensor adapted to be worn by the patient and capable of providing an output from which the patient's current activity can be estimated; and wherein the at least one processor is configured for estimating the patient's current activity by analysing the output of the activity sensor, analysing the ECG of the patient, and determining whether electrical therapy should be delivered to the electrodes.

14. The resuscitation system of claim 13 wherein the at least one processor is configured for estimating whether the patient is moving.

15. The resuscitation system of claim 14 wherein the activity sensor comprises an accelerometer, and the at least one processor is configured for integrating the output of the accelerometer to provide an estimate of velocity and/or displacement.

16. The resuscitation system of claim 13 wherein the at least one processor is configured to process the output of the activity sensor to produce a result and use the result of the processing to modify at least one threshold in a technique used for determining a physiological status of patient.

17. The resuscitation system of claim 16 wherein the physiological status comprises determining a risk of impending heart attack or cardiac arrest.

18. The resuscitation system of claim 13 wherein the resuscitation system includes a speaker adapted to be worn by the patient for issuing spoken prompts to the patient, and the at least one processor decides on content of the spoken prompt based on the estimated current activity of the patient.

19. The resuscitation system of claim 13 wherein the patient's current activity comprises estimating an orientation of the patient.

20. The resuscitation system of claim 19 wherein estimating the orientation of the patient comprises determining whether the patient is lying on his back.

Assignees

• Freeman Gary A
• Totman Mark
• Zoll Medical Corp

Inventors

• Freeman Gary A
• Totman Mark

Classifications

• A61N1/39044 Primary

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

• A61N1/39046

  User protection from shock · CPC title

• A61N1/3968

  Constructional arrangements, e.g. casings (A61N1/375 takes precedence) · CPC title

• A61H2201/5084

  Acceleration sensors · CPC title

• A61B5/1116

  Determining posture transitions · CPC title