Wireless electrocardiograph system and method

• US 6,611,705 B2
• Filed: 07/17/2001
• Issued: 08/26/2003
• Est. Priority Date: 07/18/2000
• Status: Expired due to Term

• Current Assignee: LifeSync Corporation
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Williams, Daniel L., Lodato, Franco, Hopman, Nicholas C.
• Primary Examiner(s): Getzow, Scott M.
• Application Number:
  US09/908,509
• Publication Number:
  US 20020072682A1
• Time in Patent Office: 770 Days
• Field of Search: 600/382, 600/386-394, 600/508-521, 607/149
• US Class Current: 600/509
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/256 Wearable electrodes, e.g. having straps or bands
• CPC Class Codes: A61B 5/257 using adhesive means, e.g. adhesive pads or tapes
• CPC Class Codes: A61B 5/274 using snap or button fasteners
• CPC Class Codes: A61B 5/28 for electrocardiography [ECG]
• CPC Class Codes: A61B 5/282 Holders for multiple electrodes for introduction into the body A61B5/287
• CPC Class Codes: A61B 5/6831 Straps, bands or harnesses

Abstract

A method and system for wireless ECG monitoring is provided. An electrode connector, transmitter and receiver operate with existing electrodes and ECG monitors. The electrode connector includes connectors for attaching to disposable or reusable single electrodes. The transmitter transmits the signals from the electrodes to the receiver. The receiver passes the electrode signals to the ECG monitor for processing. ECG monitors used with an electrical conductor, for example wire connections to electrodes, are connected with the receiver, avoiding the purchase of a new monitor. Any legacy ECG monitor, including different ECG monitors, connects with the receiver using the ECG monitor'"'"'s lead-wires. The ECG monitor operates as if directly connected to the electrodes without the problems discussed above associated with wires running from the ECG monitor to the patient.

Claims

1. An electrode connector for ECG monitoring of a patient, the connector comprising:

material operable to interconnect a plurality of electrodes; and

a plurality of electrode releasable connectors provided on the material

wherein the material comprises a plurality of expandable arms, each of the plurality of expandable arms corresponding to respective ones of the plurality of electrode releasable connectors.

2. The connector of claim 1 wherein the plurality of expandable arms comprise at least four expandable arms associated with hexaxial electrodes.

3. The connector of claim 1 wherein each of the plurality of expandable arms includes an electrical conductor.

4. The connector of claim 3 wherein each of the electrical conductors electrically connects with the respective electrode releasable connector.

5. The connector of claim 1 wherein each of the expandable arms includes a first portion operable to unfold for expansion and a second portion remaining folded for expansion, the first and second portions based on an amount of expansion.

6. The connector of claim 1 wherein at least a first of the plurality of expandable arms corresponds to a hexaxial electrode and at least a second of the plurality of expandable arms corresponds to a precordial electrode.

7. The connector of claim 6 wherein the second expandable arm connects to the first expandable arm.

8. The connector of claim 1 further comprising a belt, at least one of the plurality of expandable arms connecting with the belt.

9. The connector of claim 8 wherein a first expandable arm comprises a hexaxial electrode arm connected with the belt and a second expandable arm comprises a hexaxial and precordial electrode arm connected with the belt.

10. The connector of claim 9 wherein a first expandable arm comprises a hexaxial electrode arm connected with the belt and a second expandable arm comprises a hexaxial and precordial electrode arm connected with the belt.

11. The method of claim 10 wherein (a) comprises placing the plurality of electrodes for hexaxial-lead monitoring.

12. The method of claim 10 wherein (a) comprises placing the plurality of electrodes for precordial-lead monitoring.

13. The method of claim 10 wherein (a) comprises placing the plurality of electrodes for both hexaxial-lead and precordial-lead monitoring.

14. The method of claim 10 further comprising:

(d) transmitting signals from the plurality of electrodes with a radio.

15. The method of claim 10 wherein (c) comprises electrically connecting the plurality of electrodes to the plurality of expandable arms with a snap terminal.

16. The method of claim 10 wherein (b) comprises expanding a first portion of each of the expandable arms and leaving a second portion of each of the expandable arms in an unfolded position.

17. The method of claim 10 further comprising:

(d) connecting a precordial-lead expandable arm with a hexaxial-lead expandable arm.

18. The method of claim 10 further comprising:

(d) connecting at least one of the plurality of expandable arms to a belt.

19. A system for monitoring electrical signals generated by a patient, the system comprising:

a transmitter operable to transmit electrode signals from a plurality of electrodes; and

a receiver responsive to the transmitter to reproduce the electrode signals, the receiver having an output connector;

wherein the output connector is operable to connect with electrode lead-wires of an ECG monitor, the output connector having outputs corresponding to specific ones of the plurality of electrodes.

20. The system of claim 19 wherein the receiver generates the electrode signals free of ECG vector processing.

21. The system of claim 19 further comprising:

at least one electrode connector electrically connectable with the transmitter and an electrode.

22. The system of claim 21 wherein the transmitter connects with the electrode connector on a surface of the electrode connector.

23. The system of claim 19 further comprising:

a belt electrically connectable with the transmitter.

24. The system of claim 23 wherein the transmitter connects with the belt on a surface of the belt.

25. The system of claim 19 wherein the receiver comprises a connector operable to hold the receiver to the ECG monitor.

26. A method for monitoring electrical signals generated by a patient, the method comprising the acts of:

(a) receiving signals generated by a patient via a plurality of electrodes;

(b) transmitting information representing the signals received from the plurality of electrodes;

(c) receiving the information;

(d) reconstructing the signals received from the plurality of the electrodes;

(e) connecting existing lead-wires from an ECG monitor to outputs corresponding to specific ones of the plurality of electrodes; and

(f) receiving the reconstructed signals at the ECG monitor.

27. The method of claim 26 wherein (e) comprises clipping the existing lead-wires from an ECG monitor to posts.

28. The method of claim 26 further comprising:

programming a receiver for (c).

29. The method of claim 26 wherein (b) comprises transmitting pursuant to a Bluetooth specification.

30. The method of claim 26 further comprising:

(g) placing a plurality of electrodes on a patient; and

(h) connecting the electrodes to a transmitter.

31. The method of claim 26 wherein the reconstructed signals comprise signals free of vector processing.

32. The method of claim 27 wherein the reconstructed signals comprise signals free of vector processing.

33. The system of claim 32 wherein the single transmitter is operable to condition and amplify the signals from the plurality of electrodes.

34. The system of claim 32 wherein the receiver is operable to connect with existing lead-wires of an ECG monitor.

35. The system of claim 32 wherein the reconstructed signals are free of vector processing and correspond to hexaxial-lead electrode positions.

36. The system of claim 33 wherein the reconstructed signals are free of vector processing and correspond to hexaxial-lead electrode positions.

37. The method of claim 36 further comprising:

(e) connecting a receiver operable to perform (d) with existing lead-wires of an ECG monitor.

38. The method of claim 36 wherein (d) comprises reconstructing the signal free of vector processing.

39. The method of claim 37 wherein (d) comprises reconstructing the signals free of vector processing.

40. The improvement of claim 39 wherein the at least one expandable arm comprises a plurality of expandable arms.

41. The improvement of claim 40 wherein the plurality of expandable arms correspond to hexaxial and precordial electrodes.

42. The improvement of claim 39 wherein the at least one expandable arm comprises an electrode snap connector.

43. The improvement of claim 39 further comprising a radio electrically connected with the at least one expandable arm.

44. The improvement of claim 43 further comprising a radio expandable arm having electrical connections with a plurality of electrodes and the radio.

45. The improvement of claim 44 further comprising a radio expandable arm having electrical connections with a plurality of electrodes and the radio.

46. The method of claim 45 wherein (b) comprises positioning the plurality of expandable arms at hexaxial and precordial positions.

47. The method of claim 45 further comprising:

(c) snapping an electrode to each of the plurality of expandable arms.

48. The method of claim 45 further comprising:

(c) releasably connecting one of the plurality of expandable arms to another of the plurality of expandable arms.

49. The method of claim 48 wherein (c) comprises releasably connecting a precordial expandable arm to a hexaxial expandable arm.

50. The method of claim 45 further comprising:

(c) connecting at least one of the plurality of expandable arms to a belt.

51. The method of claim 45 further comprising:

(c) wirelessly transmitting signals from the plurality of expandable arms.