Cardiopulmonary resuscitation (CPR) feedback systems and methods

• US 9,675,517 B2
• Filed: 04/01/2015
• Issued: 06/13/2017
• Est. Priority Date: 04/01/2014
• Status: Active Grant

• Current Assignee: Nuline Sensors, LLC, Schiller AG
• Original Assignee: Nuline Sensors, LLC, Schiller AG
• Inventors: Vosch, Michael J., Holifield, Timothy A., Mohlenhoff, Jonathan R., Schuler, Rolf, Downey, Benjamin M., Schmid, Johann-Jakob
• Primary Examiner(s): Feild, Joseph
• Assistant Examiner(s): Mortell, John
• Application Number:
  US14/676,749
• Publication Number:
  US 20150272820A1
• Time in Patent Office: 804 Days
• CPC Class Codes: A61H 2201/5012 using the internet
• CPC Class Codes: A61H 2201/5015 using specific interfaces or standards, e.g. USB, serial, parallel
• CPC Class Codes: A61H 2201/5061 Force sensors
• CPC Class Codes: A61H 2201/5064 Position sensors
• CPC Class Codes: A61H 2201/5069 Angle sensors
• CPC Class Codes: A61H 2201/5084 Acceleration sensors
• CPC Class Codes: A61H 2201/5097 wireless
• CPC Class Codes: A61H 31/005 with feedback for the user
• CPC Class Codes: A61H 31/007 Manual driven
• CPC Class Codes: H04Q 2209/30 using a wired architecture
• CPC Class Codes: H04Q 2209/40 using a wireless architecture
• CPC Class Codes: H04Q 2209/43 using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

Systems and methods for cardiopulmonary resuscitation feedback are disclosed. According to an aspect, a method includes determining a force. The method also includes, in response to determining the force, acquiring spatial orientation data, remove the effects of gravity, and wirelessly or wired method of communicating the spatial orientation data.

Claims

1. A method of cardiopulmonary resuscitation feedback, the method comprising:

determining a magnitude of a force applied to a cardiopulmonary resuscitation (CPR) feedback device;

in response to determining the magnitude of the force exceeds a predetermined threshold;

using at least one magnetometer to acquire three-dimensional (3D) spatial orientation data of the force;

determining angular orientation and direction of the force in three-dimensional space based on the spatial orientation data; and

one of wirelessly or through wired communication communicating the determined angular orientation and direction.

2. The method of claim 1, wherein determining the magnitude of the force comprises detecting the force using an accelerometer.

3. The method of claim 1, wherein using at least one magnetometer comprises using a plurality of magnetometers to acquire the spatial orientation data, and

wherein the method further comprises using an accelerometer to acquire the spatial orientation data of the force.

4. The method of claim 1, wherein wirelessly communicating the spatial orientation data via a wireless transmission component.

5. The method of claim 1, wherein wirelessly communicating the spatial orientation data comprises communicating the spatial orientation data to a computing device.

6. The method of claim 1, further comprising communicating data indicating the magnitude of the force to a computing device.

13. The method of claim 1, wherein the three-dimensional (3D) spatial orientation data comprises one of an angular rotation rate and magnetic field intensity of the force.

14. The method of claim 13, wherein the one of angular rotation rate and magnetic field intensity are acquired at a sampling rate during application of the force to the CPR device.

15. The method of claim 1, further comprising identifying a start and an end of a compression cycle during application of the force to the CPR device.

16. The method of claim 1, wherein the method comprises applying a post compression algorithm using the 3D spatial orientation data.

17. The method of claim 16, wherein applying the post compression algorithm comprises determining a drift correction of the force.

18. The method of claim 16, wherein applying the post compression algorithm comprises estimating a compression direction of the force.

19. The method of claim 16, wherein applying the post compression algorithm comprises determining a compression displacement estimate invariant to a body orientation and compression rotation of the force.

20. The method of claim 1, wherein the method further comprises using a gyroscope to acquire the spatial orientation data of the force.

7. A system of cardiopulmonary resuscitation feedback, the system comprising:

a cardiopulmonary resuscitation (CPR) feedback device comprising at least one magnetometer configured to acquire three-dimensional (3D) spatial orientation data of a force applied to the CPR feedback device;

at least one processor and memory configured to;

determine a magnitude of the force exceeds a predetermined threshold;

determine angular orientation and direction of the force in three-dimensional space based on the spatial orientation data in response to determining the magnitude of the force exceeds the predetermined threshold; and

a communication component configured to;

communicate the determined angular orientation and direction via one of wireless and wired communication.

8. The system of claim 7, wherein the CPR feedback device further comprises an accelerometer configured to detect the force.

9. The system of claim 7, wherein the at least one magnetometer comprises a plurality of magnetometers, and

wherein the CPR feedback device further comprises an accelerometer configured to acquire the spatial orientation data of the force.

10. The system of claim 7, wherein the communication component is a wireless transmission component configured to wirelessly communicate the spatial orientation data.

11. The system of claim 7, wherein the communication component is a wireless transmission component configured to communicate the spatial orientation data to a computing device.

12. The system of claim 7, wherein the communication component is a wireless transmission component configured to communicate data indicating the magnitude of the force to a computing device.