Adjusting pump protocol based on irregular heart rhythm

Patent metadata

Field	Value
Publication number	US-11478629-B2
Application number	US-202016996336-A
Country	US
Kind code	B2
Filing date	Aug 18, 2020
Priority date	Mar 29, 2017
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

The present invention generally relates to heart treatment systems. In some aspects, methods and systems are provided for facilitating communication between implanted devices. For example, an implantable cardiac rhythm management device may be configured to communicate with an implantable blood pump. The implantable cardiac rhythm management device may deliver heart stimulation rate information in addition to information associated with any detected abnormalities in heart function. In response, the pump may be configured to adjust pumping by the pump to better accommodate a patient's particular needs.

First claim

What is claimed is:

1. A method of assisting a heart of a patient, the method comprising:
receiving, with a controller of an implantable blood pump coupled with a heart of the patient, a series of electrical pulses from an implanted cardiac rhythm management device electrically pacing the heart of the patient, the series of electrical pulses received by the controller of the implantable blood pump comprising one or more pulses associated with electrical pacing signals and one or more pulses associated with a type of abnormal heart rhythm detected by the implantable cardiac rhythm management device;
determining, with the controller of the implantable blood pump, the type of abnormal heart rhythm detected by the implanted cardiac rhythm management device, wherein the implantable blood pump controller is configured to differentiate between the pulses associated with the electrical pace signals and the pulses associated with the type of abnormal heart rhythm; and
adjusting a pumping protocol of the implantable blood pump based on the type of abnormal heart rhythm determined by the controller.

2. The method of claim 1 , wherein the implantable blood pump controller determines the type of abnormal heart rhythm by analyzing a frequency of the series of electrical pulses.

3. The method of claim 2 , wherein the implantable blood pump controller determines the type of abnormal heart rhythm by referencing a database associating frequencies of sensed electrical pulses with types of abnormal heart rhythm.

4. The method of claim 2 , wherein the implantable blood pump controller determines the type of abnormal heart rhythm by comparing the frequency of the series of electrical pulses to one or more frequency thresholds.

5. The method of claim 4 , further comprising comparing the frequency of the series of electrical pulses with a first frequency threshold and a second frequency threshold that is greater than the first frequency threshold.

6. The method of claim 1 , wherein the implantable blood pump controller determines the type of abnormal heart rhythm by analyzing a duration of time of each of the electrical pulses of the series of electrical pulses.

7. The method of claim 6 , wherein the series of electrical pulses comprises a first pulse with a first duration and a second pulse with a second duration that is different than the first pulse.

8. The method of claim 1 , wherein the implantable blood pump controller determines the type of abnormal heart rhythm by comparing a voltage of each of the electrical pulses of the series of electrical pulses.

9. The method of claim 1 , wherein the pumping protocol is adjusted to cease the pumping of the implantable blood pump for a predetermined duration of time.

10. The method of claim 1 , wherein each electrical pace signal is received by the controller with each heart stimulation pulse delivered to the heart of the patient by the implanted cardiac rhythm management device.

11. The method of claim 1 , wherein the controller is configured to use a frequency threshold to differentiate between the pulses associated with the electrical pace signal and the pulses associated with the type of abnormal heart rhythm.

12. The method of claim 1 , wherein the controller is configured to use a pulse duration threshold to differentiate between the pulses associated with the electrical pace signal and the pulses associated with the type of abnormal heart rhythm.

13. The method of claim 1 , wherein the implantable blood pump controller receives the series of electrical pulses from the implanted cardiac rhythm management device using one or more sensors of the implantable blood pump capable of detecting electric fields emitted by the implantable cardiac rhythm management device.

14. A method of assisting a heart of a patient, the method comprising:
receiving, with a controller of an implantable blood pump coupled with a heart of the patient, a series of electrical pulses from an implanted cardiac rhythm management device electrically pacing the heart of the patient, the series of electrical pulses received by the controller of the implantable blood pump comprising one or more pulses associated with electrical pacing signals and one or more pulses associated with a type of abnormal heart rhythm detected by the implantable cardiac rhythm management device, wherein the implantable blood pump controller further receives a first series of pulses indicative of a start of communication prompting the controller to start receiving a second series of pulses, the second series of pulses communicating specific information to the controller;
determining, with the controller of the implantable blood pump, the type of abnormal heart rhythm detected by the implanted cardiac rhythm management device; and
adjusting a pumping protocol of the implantable blood pump based on the type of abnormal heart rhythm determined by the controller.

15. The method of claim 14 , wherein the controller of the implantable blood pump further receives a third series of pulses indicative of a stop of communication prompting the controller to enter a standby mode.

16. The method of claim 14 , wherein the specific information comprises information encoded by the implanted cardiac rhythm management device, and wherein the specific information comprises patient information, time stamps, or information associated with patient position or activity.

17. A heart treatment system, comprising:
an implantable blood pump configured to couple with a circulatory system of a patient and to pump blood therethrough, the implantable blood pump including a pump processor configured to:
receive a series of electrical pulses from an implanted cardiac rhythm management device adapted for electrically pacing a heart of the patient, wherein the series of electrical pulses received by the pump processor comprise one or more pulses associated with electrical pacing signals and one or more pulses associated with a type of abnormal heart rhythm detected by the implanted cardiac rhythm management device, wherein one or more sensors coupled to the implantable blood pump are configured to detect electric fields emitted by the implanted cardiac rhythm management device;
determine the type of abnormal heart rhythm detected by the implanted cardiac rhythm management device; and
adjust a pumping protocol of the implantable blood pump based on the type of abnormal heart rhythm determined by the pump processor.

18. The heart treatment system of claim 17 , wherein the pump processor is configured to determine the type of abnormal heart rhythm by analyzing a frequency of the series of electrical pulses.

19. The heart treatment system of claim 17 , wherein the pump processor is configured to determine the type of abnormal heart rhythm by analyzing a duration of time for each of the electrical pulses of the series of electrical pulses.

20. The heart treatment system of claim 17 , wherein when the type of abnormal heart rhythm is determined to be a fibrillation of the heart, the pump processor adjusts the pumping protocol to cease the pumping of the implantable blood pump for a predetermined duration of time.

21. The heart treatment system of claim 17 , wherein each electrical pace signal is received by the pump processor with each heart stimulation pulse delivered to the heart of the patient by the implanted cardiac rhythm management device.

22. The heart treatment system of claim 17 , wherein the pump processor is further configured to receive a

Assignees

• Tc1 Llc

Inventors

• Harjes Daniel I
• Hansen John Freddy
• Stark Iii Joseph C
• Mauro Ghazal Anvar
• Lee Eric
• Callaway Justin A
• Dur Onur

Classifications

• A61M60/515

  Regulation using real-time patient data · CPC title

• A61M60/205

  Non-positive displacement blood pumps · CPC title

• A61M60/422

  the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps · CPC title

• A61N1/36507 Primary

  controlled by gradient or slope of the heart potential · CPC title

• A61M2205/3507

  with implanted devices, e.g. external control · CPC title