Systems, methods and computer program products for heart monitoring

• US 7,917,195 B2
• Filed: 03/07/2005
• Issued: 03/29/2011
• Est. Priority Date: 03/05/2004
• Status: Active Grant

• Current Assignee: Complete Medical Solutions LLC
• Original Assignee: Lifesciences Solutions LLC
• Inventors: Richardson, Charles L.
• Primary Examiner(s): Layno; Carl H
• Assistant Examiner(s): MALAMUD, DEBORAH LESLIE
• Application Number:
  US11/072,463
• Publication Number:
  US 20050234360A1
• Time in Patent Office: 2,213 Days
• Field of Search: 600509-510, 600/513, 600/523, 600/546, 607/60, 607115-116, 607/118
• US Class Current: 600/510
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/349 Detecting specific parameters of the electrocardiograph cycle
• CPC Class Codes: A61B 5/35 by template matching
• CPC Class Codes: A61B 5/413 Monitoring transplanted tissue or organ, e.g. for possible rejection reactions after a transplant
• CPC Class Codes: A61B 5/726 using Wavelet transforms
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371
• CPC Class Codes: A61N 1/37211 Means for communicating with stimulators
• CPC Class Codes: A61N 1/37247 User interfaces, e.g. input or presentation means

Abstract

The present invention provides systems, methods and computer program products for monitoring a heart. According to one embodiment, the system includes an implantable registering unit. The registering unit comprises a first controller structured to register an electrical signal from the heart. The system includes a second controller in operable communication with the first controller. The second controller comprises a data repository structured to receive data corresponding to the registered electrical signal and being structured to store the data. The data repository stores data corresponding to a baseline electrical signal of the heart. The second controller is structured to receive the data from the first controller corresponding to the registered electrical signal and to compare the registered electrical signal to the baseline electrical signal to determine whether the heart is functioning properly.

Claims

1. A system for monitoring a patient'"'"'s heart, comprising:

a registering unit configured to be implanted into the patient'"'"'s body, said registering unit comprising a first controller in electrical communication with the patient'"'"'s heart, said first controller being configured to register an electrical signal emitted by the patient'"'"'s heart; and

a second controller in operable communication with said first controller, said second controller being configured to receive the data from said first controller corresponding to the registered electrical signal and to compare the registered electrical signal to a baseline electrical signal emitted by the patient'"'"'s heart to determine whether the patient'"'"'s heart is functioning properly,

wherein in comparing the registered and baseline electrical signals, said second controller is configured to generate a template of an intracardiac electrogram for each of the registered electrical signal and a baseline electrical signal and to compare the templates to determine whether the patient'"'"'s heart is functioning properly,

wherein said second controller is configured to determine whether a predetermined critical match-percent threshold has been exceeded based on a comparison of the templates for the registered electrical signal and the baseline electrical signal,

wherein the critical match-percent threshold comprises at least 70% correlation between the templates for the registered electrical signal and the baseline electrical signal, and

wherein a critical-match percent threshold less than 70% indicates that the heart is not functioning properly.

2. The system of claim 1, wherein said registering unit further comprises a transmitter in operable communication with said second controller.

3. The system of claim 1, further comprising a relay unit independent of said first controller and said second controller and configured to communicate with said first controller and said second controller, said relay unit being configured to receive data from said first controller corresponding to the registered electrical signal and to transmit the received data to said second controller.

4. The system of claim 3, wherein the relay unit is configured to wirelessly communicate with said registering unit.

5. The system of claim 1, wherein said second controller is located remotely from said registering unit.

6. The system of claim 1, wherein said second controller includes a data repository for storing data corresponding to the registered electrical signal and data corresponding to the baseline electrical signal of the patient'"'"'s heart.

7. The system of claim 1, further comprising a plurality of electrodes in electrical communication with said registering unit and configured to be coupled directly to the heart.

8. The system of claim 1, wherein the critical match-percent threshold comprises at least 80% correlation between the templates for the registered electrical signal and the baseline electrical signal, wherein a critical-match percent threshold less than 80% indicates that the heart is not functioning properly.

9. The system of claim 1, wherein the critical match-percent threshold comprises at least 90% correlation between the templates for the registered electrical signal and the baseline electrical signal, wherein a critical-match percent threshold less than 90% indicates that the heart is not functioning properly.

10. The system of claim 1, wherein said second controller is configured to generate a first template corresponding to the baseline electrical signal and a second template corresponding to the registered electrical signal, said second controller configured to measure the area between the first template and the second template to determine whether the patient'"'"'s heart is functioning properly.

11. The system of claim 1, wherein said second controller is configured to generate a first template corresponding to the baseline electrical signal and a second template corresponding to the registered electrical signal, said second controller being configured to identify a plurality of comparison points for the first template and to identify a plurality of comparison points for the second template, each of the plurality of comparison points for the second template corresponding to one of the comparison points for the first template, and wherein said second controller is configured to measure differences between each of the corresponding plurality of comparison points for the first template and the second template to determine whether the patient'"'"'s heart is functioning properly.

12. The system according to claim 1, wherein said registering unit further comprises a housing of biologically inert material for housing said first controller.

13. The system of claim 1, wherein said second controller is configured to calculate a quantifiable difference between the registered electrical signal and the baseline electrical signal based on the comparison between the signals in order to determine whether the patient'"'"'s heart is functioning properly.

14. The system of claim 1, wherein said second controller is configured to compare the registered electrical signal to the baseline electrical signal following a heart transplant in order to determine whether the patient'"'"'s transplanted heart is being rejected.

15. A system for monitoring a patient'"'"'s heart, comprising:

a registering unit configured to be implanted into the patient'"'"'s body, said registering unit comprising a first controller in electrical communication with the patient'"'"'s heart, said first controller being configured to register an electrical signal emitted by the patient'"'"'s heart; and

a second controller in operable communication with said first controller, said second controller being configured to receive the data from said first controller corresponding to the registered electrical signal and to compare the registered electrical signal to a baseline electrical signal emitted by the patient'"'"'s heart to determine whether the patient'"'"'s heart is functioning properly,

wherein said second controller is configured to compare the registered electrical signal to the baseline electrical signal following a heart transplant in order to determine whether the patient'"'"'s transplanted heart is being rejected.