Cardio pulmonary resuscitation quality feedback system

Patent metadata

Field	Value
Publication number	US-2016199251-A1
Application number	US-201414911307-A
Country	US
Kind code	A1
Filing date	Aug 13, 2014
Priority date	Aug 13, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

The present invention relates to a system for providing feedback regarding chest compressions in CPR, an automated resuscitation device and method for providing feedback regarding chest compressions in CPR.

First claim

1 . A system for providing feedback regarding chest compressions in CPR, wherein the system comprises:
a measuring unit providing a measure of arterial blood pressure of a patient, a processor registering data from the measuring unit, the processor being configured to obtain arterial blood pressure of the patient for a time period while CPR is being performed, and the processor being configured to calculate a blood pressure CPR quality indicator using the blood pressure as a function of time, an indicator unit providing an indication of the blood pressure CPR quality indicator, and a sensor for registering depth of compression of CPR and a display for displaying a signal indicating depth of compression,
characterized in that the processor is further configured to indicate that in order to obtain an optimal compression depth, a step up and a step down of compression depth relative to a previously determined optimal compression depth should be performed, where after selecting a new optimal compression depth based on the three CPR quality indicators obtained, and wherein the new optimal compression depth selected from the three applied compression depths is defined as the depth with the highest blood pressure CPR quality indicator value or as the smallest depth with a blood pressure CPR quality indicator value that exceeds a target blood pressure CPR quality indicator value.

2 . The system according to claim 1 , wherein if the blood pressure CPR quality indicator is below a quality threshold or outside a target interval, transmitting a low quality indication signal, if the blood pressure CPR quality indicator is above the threshold or inside the target interval, transmitting a high quality indication signal, optionally if the blood pressure CPR quality indicator for a time period shows a negative trend, transmitting a decreasing CPR quality signal.

3 . The system according to claim 1 , wherein the indicator unit is a visual indicator configured to provide visual indication of the low quality indication signal and/or high quality indication signal and/or present blood pressure CPR quality indicator.

4 . The system according to claim 1 , wherein blood pressure is obtained via a continuous invasive pressure catheter, a non-invasive regular cuff-measurement or a non-invasive continuous measurement or a combination thereof.

5 . The system according to claim 1 , wherein diastolic blood pressure is used for calculating the blood pressure CPR quality indicator or the mean blood pressure value is used as the blood pressure CPR quality indicator, where optional target levels or intervals for the diastolic blood pressure are between 20 and 40 mmHg and target levels or intervals for the mean blood pressure are between 40 and 80 mmHg.

6 . The system according to claim 1 , wherein the diastolic blood pressure is determined by the minimum value during the diastolic phase of the blood pressure signal or the average value of the diastolic phase of the blood pressure signal or the end value of the diastolic phase of the blood pressure signal.

7 . An automated resuscitation device comprising:
a chest compression device to repeatedly compress the chest of a patient the system according to claim 1 to measure quality of CPR, and a processor configured to operate the chest compression device according to claim 4 on regular time intervals or by user interaction.

8 . A computer program stored on a medium or distributed via a wired or wireless telecommunication system, wherein the computer program is adapted to, when executed in a processor of a system comprising a measuring unit providing a measure of blood pressure of a patient and an indicator unit providing an indication of a blood pressure CPR quality indicator, implement the steps of:
while CPR is being performed on the patient obtaining for a time period blood pressure of the patient, calculating using the blood pressure as a function of time a-the blood pressure CPR quality indicator, and if the blood pressure CPR quality indicator is outside a quality criterion transmitting a low quality indication signal, if the blood pressure CPR quality indicator fulfills the quality criterion the threshold transmitting a high quality indication signal registering a depth of compression of CPR and displaying a signal indicating depth of compression, indicating that in order to obtain an optimal compression depth, a step up and a step down of compression depth relative to a previously determined optimal compression depth should be performed, selecting a new optimal compression depth based on the three CPR quality indicators obtained, wherein the new optimal compression depth is selected from the three applied compression depths is defined as the depth with the highest blood pressure CPR quality indicator value or as the smallest depth with a blood pressure CPR quality indicator value that exceeds a target blood pressure CPR quality indicator value.

9 . The computer program of claim 8 , wherein a high quality indication signal is transmitted when the blood pressure CPR quality indicator is in a certain high quality range and a low quality signal is transmitted if the blood pressure CPR quality indicator is not in this range.

10 . The computer program of claim 8 , wherein the system comprises a visual indicator and/or an audio transmitter, the computer program is further adapted to implement the step of indicating a respective low quality indication signal or high quality indication signal via the visual indicator and/or audio transmitter and/or wherein optionally if the blood pressure CPR quality indicator for a time period shows a negative trend, transmitting a decreasing CPR quality signal.

11 . The computer program of claim 8 , wherein diastolic blood pressure is used for calculating the blood pressure CPR quality indicator or the mean blood pressure value is used as the blood pressure CPR quality indicator.

12 . The computer program of claim 11 , wherein the diastolic blood pressure is determined by the minimum value during the diastolic phase of the blood pressure signal or the average value of the diastolic phase of the blood pressure signal or the end value of the diastolic phase of the blood pressure signal.

13 . A method for providing feedback regarding chest compressions in CPR, using a system comprising a measuring unit providing a measure of blood pressure of a patient, the method comprising:
while CPR is being performed on the patient obtaining for a time period blood pressure of the patient, calculating using the blood pressure as a function of time a blood pressure CPR quality indicator, and if the blood pressure CPR quality indicator is outside a quality criterion transmitting a low quality indication signal, if the blood pressure CPR quality indicator fulfills the quality criterion the threshold transmitting a high quality indication signal registering a depth of compression of CPR and displaying a signal indicating depth of compression, indicating that in order to obtain an optimal compression depth, a step up and a step down of compression depth relative to a previously determined optimal compression depth should be performed, selecting a new optimal compression depth based on the three CPR quality indicators obtained, wherein the new optimal compression depth is selected from the three applied compression depths is defined as the depth with the highest blood pressure CPR quality indicator value or as the smallest depth with a blood pressure CPR quality indicator value that exceeds a target blood pressure CPR quality indicator value.

14 . The method of claim 13 , wherein a hi

Assignees

• Koninkl Philips Nv

Inventors

• Aelen Paul
• Ordelman Simone Cornelia Maria Anna
• Woerlee Pierre Hermanus

Classifications

• A61H2230/30

  Blood pressure (A61H2230/04 takes precedence) · CPC title

• A61H31/005 Primary

  with feedback for the user · CPC title

• A61H31/007

  Manual driven · CPC title