Integrated cardiac resuscitation system with ability to detect perfusion

• US 6,575,914 B2
• Filed: 05/18/2001
• Issued: 06/10/2003
• Est. Priority Date: 05/18/2001
• Status: Expired due to Term

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Rock, Joseph E., Nakagawa, Michael, Rochford, Catherine
• Primary Examiner(s): Paschall, Mark
• Application Number:
  US09/860,366
• Publication Number:
  US 20020173725A1
• Time in Patent Office: 753 Days
• Field of Search: 600/500, 600/506, 600/528, 600/483, 600/509, 600/300, 600/301, 607/9, 607/17, 607/19, 607/24, 607/25, 607/3-7, 607/26, 607/33
• US Class Current: 600/500
• CPC Class Codes: A61B 5/061 Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body A61B1/00158 takes precedence
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/6822 Neck
• CPC Class Codes: A61B 5/7242 using integration
• CPC Class Codes: A61B 8/06 Measuring blood flow measuring volume flow in general G01F, e.g. G01F1/66, G01F1/72; measuring speed of fluids in general G01P5/00
• CPC Class Codes: A61B 8/4236 characterised by adhesive patches
• CPC Class Codes: A61N 1/39044 in combination with cardiopulmonary resuscitation [CPR] therapy
• CPC Class Codes: A61N 1/3925 Monitoring; Protecting

Abstract

A system and method includes a cardiac resuscitation apparatus connected to an automated external programmable defibrillator (AED) or a semi-automated external programmable defibrillator (SAED) includes an adhesive Doppler pad to detect a pulse signal of a patient. Defibrillation-monitoring pads are connected to the Doppler pad and detect an ECG signal of the patient. A processor integrates the pulse signal and the ECG signal to determine therefrom whether or not shock therapy is advised for the patient.

Claims

1. A cardiac resuscitation apparatus, comprising:

an adhesive Doppler pad detecting a pulse signal of a patient;

defibrillation-monitoring pads, connected to the Doppler pad, detecting an ECG signal of the patient; and

a processor integrating the pulse signal and the ECG signal to determine therefrom whether or not shock therapy is advised for the patient.

2. The cardiac resuscitation apparatus as recited in claim 1, wherein the ECG signal is indicative of whether the patient'"'"'s heart is undergoing a shockable rhythm.

3. The cardiac resuscitation apparatus as recited in claim 2, wherein the Doppler pad further comprises a transducer comprising one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver positioned at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow of the patient.

4. The cardiac resuscitation apparatus as recited in claim 3, wherein the processor determines from the integrated signals if a pulse of the patient is present, measures blood flow, and determines whether the shockable rhythm is present.

5. The cardiac resuscitation apparatus as recited in claim 1, wherein the Doppler pad and the defibrillation-monitoring pads are connected to the cardiac resuscitation apparatus via a single conductive cable.

6. The cardiac resuscitation apparatus as recited in claim 1, wherein the cardiac resuscitation apparatus is connected to an automated external programmable defibrillator (AED) or a semi-automated external programmable defibrillator (SAED).

7. The cardiac resuscitation apparatus as recited in claim 1, wherein each of the Doppler pad and the defibrillation-monitoring pads comprises a pictorial instruction providing guidance to a user as to placement of each pad on the patient.

8. A cardiac resuscitation system, comprising:

an adhesive Doppler pad comprising one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver integrated therein detecting a pulse signal of a patient;

defibrillation-monitoring pads detecting an ECG signal of the patient, wherein the adhesive Doppler pad and the defibrillation-monitoring pads are connected to a cardiac resuscitation apparatus via a single conductive cable; and

a processor integrating the pulse signal and the ECG signal and determining therefrom if a pulse of the patient is present, measuring blood flow, and determining whether shockable rhythm is present.

9. The cardiac resuscitation apparatus as recited in claim 8, wherein the one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver are positioned at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow of the patient.

10. The cardiac resuscitation apparatus as recited in claim 8, wherein the cardiac resuscitation apparatus is connected to an automated external programmable defibrillator (AED) or a semi-automated external programmable defibrillator (SAED).

11. The cardiac resuscitation apparatus as recited in claim 8, wherein each of the Doppler pad and the defibrillation-monitoring pads comprise a pictorial instruction providing guidance to user as to placement of each pad on the patient.

12. A cardiac resuscitation apparatus, comprising:

conductors connected into a single conductive cable and terminating in a Doppler pad and defibrillation-monitoring pads, wherein the conductors connect the Doppler pad and the defibrillation-monitoring pads to an automated external programmable defibrillator (AED) or a semi-automated external programmable defibrillator (SAED) as a unit.

13. A cardiac resuscitation system, comprising:

an adhesive Doppler pad comprising a piezo-electric transducer integrated therein and positioned relative to a carotid artery of a patient to detect a pulse signal using one of continuous wave signals, pulse signals, and phased array modalities, wherein the transducer comprises one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver positioned at a predetermined orientation to detect the pulse signal indicative of cerebral perfusion and a duration of which is indicative of blood flow;

defibrillation-monitoring pads detecting a shockable rhythm of the patient, wherein the adhesive Doppler pad and the defibrillation-monitoring pads are connected to an automated external programmable defibrillator (AED) or a semi-automated external programmable defibrillator (SAED) via a single conductive cable and each of the Doppler pad and each of the Doppler pad and the defibrillation-monitoring pads comprise a pictorial instruction providing guidance to a user as to placement of each pad on the patient; and

a processor determining from the integrated signals if a pulse of the patient is present, measuring blood flow, and determining whether the shockable rhythm is present to determine whether or not shock therapy is advised for the patient.

14. A cardiac resuscitation apparatus, comprising:

pulse detection means for detecting a pulse signal of a patient;

monitoring means, connected to the adhesive means, for detecting an ECG signal of the patient; and

processing means for integrating the pulse signal and the ECG signal to determine therefrom whether or not shock therapy is advised for the patient.

15. A cardiac resuscitation system, comprising:

pulse detection means comprising one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver integrated therein for detecting a pulse signal of a patient;

monitoring means for detecting an ECG signal of the patient, wherein the adhesive means and the monitoring means are connected to a cardiac resuscitation apparatus via a single conductive cable; and

processing means for integrating the pulse signal and the ECG signal and determining therefrom if a pulse of the patient is present, measuring blood flow, and determining whether a shockable rhythm is present.

16. A cardiac resuscitation apparatus, comprising:

conductive means connected into a single conductive means and terminating in a Doppler pad and defibrillation-monitoring pads, wherein the conductive means connects the Doppler pad and the defibrillation-monitoring pads to an automated external programmable defibrillator (AED) or a semi-automated external programmable defibrillator (SAED) as a unit.

17. A cardiac resuscitation system, comprising:

pulse detection means comprising a piezo-electric transducer integrated therein and positioned relative to a carotid artery of a patient for detecting a pulse signal using one of continuous wave signals, pulse signals, and phased array modalities, wherein the transducer comprises one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver positioned at a predetermined orientation to detect the pulse signal indicative of cerebral perfusion and a duration of which is indicative of blood flow;

defibrillation-monitoring means for detecting a shockable rhythm of the patient, wherein the adhesive means and the monitoring means are connected to an AED or SAED via a single conductive cable and each of the Doppler pad and the defibrillation-monitoring pads comprise a pictorial instruction providing guidance to a user as to placement of each pad on the patient; and

processing means for determining from the integrated signals if a pulse of the patient is present, measuring blood flow, and determining whether the shockable rhythm is present to determine whether or not shock therapy is advised for the patient.

18. A method in a cardiac resuscitation system, comprising:

detecting a pulse signal of a patient;

detecting an ECG signal of the patient;

integrating the pulse signal and the ECG signal; and

determining from the integrated signals whether or not shock therapy is advised to a patient.

19. The method as recited in claim 18, further comprising determining from the integrated signals if a pulse of the patient is present, measuring blood flow, and determining whether a shockable rhythm is present.

20. The method as recited in claim 18, further comprising positioning one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow of the patient.

21. A method in a cardiac resuscitation system, comprising:

detecting a pulse signal of a patient;

detecting an ECG signal of the patient; and

integrating the pulse signal and the ECG signal and determining therefrom if a pulse is present, measuring blood flow, and determining whether a shockable rhythm is present.

22. The method as recited in claim 21, determining from the integrated signals whether or not shock therapy is advised to a patient.

23. The method as recited in claim 21, further comprising positioning one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow of the patient.

24. A method in a cardiac resuscitation system, comprising:

connecting an adhesive Doppler pad and defibrillation-monitoring pads to an AED or a SAED via a single conductive cable;

detecting a pulse signal of a patient via the adhesive Doppler pad comprising one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver integrated therein;

detecting an ECG signal of the patient via the defibrillation-monitoring pads; and

integrating the pulse signal and the ECG signal and determining therefrom if a pulse is present, measuring blood flow, and determining whether a shockable rhythm is present.

25. The method as recited in claim 24, further comprising positioning the one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow.

26. A method in a cardiac resuscitation system, comprising:

positioning an adhesive Doppler pad relative to a carotid artery of a patient to monitor a pulse signal;

positioning defibrillation-monitoring pads on the patient to monitor a signal indicative of a shockable rhythm;

integrating the pulse signal and the signal indicative of a shockable rhythm;

determining shock therapy is not advised for a patient when the integrated signal indicates that a pulse is detected or a shockable rhythm is not detected; and

determining the shock therapy is advised for a patient when the integrated signal indicates that a pulse is not detected or a shockable rhythm is detected.

27. The method as recited in claim 26, further comprising processing the pulse signal to quantify blood flow in the patient.

28. The method as recited in claim 26, further comprising processing the integrated signal to refine the determination of whether or not the shock therapy is advised.

29. The method as recited in claim 26, further comprising providing an impedance measurement stimulus to determine if the defibrillation-monitoring pads are positioned so as to make good contact with the patient.

30. A method in a cardiac resuscitation system, comprising:

integrating a pulse signal and the signal indicative of a shockable rhythm of a patient;

determining shock therapy is not advised for a patient when the integrated signal indicates that a pulse is detected or a shockable rhythm is not detected; and

determining the shock therapy is advised for a patient when the integrated signal indicates that a pulse is not detected or a shockable rhythm is detected.

31. The method as recited in claim 30, further comprising

connecting an adhesive Doppler pad and defibrillation-monitoring pads to an AED or a SAED via a single conductive cable, wherein each of the Doppler pad and the defibrillation-monitoring pads comprise a pictorial instruction providing guidance to a user as to placement of each pad on the patient;

positioning the adhesive Doppler pad relative to a carotid artery of a patient to monitor the pulse signal; and

positioning the defibrillation-monitoring pads on the patient to monitor the shockable rhythm.

32. A method in a cardiac resuscitation system, comprising:

connecting an adhesive Doppler pad and defibrillation-monitoring pads to an AED or a SAED via a single conductive cable, wherein each of the Doppler pad and defibrillation-monitoring pads comprise a pictorial instruction providing guidance to a user as to placement of each pad on the patient;

positioning the adhesive Doppler pad relative to a carotid artery of a patient to monitor a pulse signal, wherein the adhesive Doppler pad comprises one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver positioned at predetermined orientation;

processing the pulse signal to quantify blood flow in the patient;

positioning defibrillation-monitoring pads on the patient to monitor a signal indicative of a shockable rhythm;

integrating the pulse signal and the signal indicative of a shockable rhythm;

determining shock therapy is nor advised for a patient when the integrated signal indicates that a pulse is detected or a shockable rhythm is not detected;

determining the shock therapy is advised for a patient when the integrated signal indicates that a pulse is not detected or a shockable rhythm is detected;

refining the integrated signals; and

providing an impedance measurement stimulus to determine if the defibrillation-monitoring pads are positioned so as to make good contact with die patient.

33. A computer readable storage controlling a computer in a cardiac resuscitation system and comprising

a process of detecting a pulse signal of a patient;

detecting an ECG signal of the patient;

integrating the pulse signal and the ECG signal; and

determining from the integrated signals whether or not shock therapy is advised to a patient.

34. The computer readable storage as recited in claim 33, further comprising determining from the integrated signals if a pulse of the patient is present, measuring blood flow, and determining whether a shockable rhythm is present.

35. The computer readable storage as recited in claim 33, further comprising positioning one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow of the patient.

36. A computer readable storage controlling a computer in a cardiac resuscitation system and comprising

a process of detecting a pulse signal of a patient;

detecting an ECG signal of the patient; and

integrating the pulse signal and the ECG signal and determining therefrom if a pulse is present, measuring blood flow, and determining whether a shockable rhythm is present.

37. The computer readable storage as recited in claim 36, determining from the integrated signals whether or not shock therapy is advised to a patient.

38. The computer readable storage as recited in claim 36, further comprising positioning one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow of the patient.

39. A computer readable storage controlling a computer in a cardiac resuscitation system and comprising

a process of connecting an adhesive Doppler pad and defibrillation-monitoring pads to an AED or a SAED via a single conductive cable;

detecting a pulse signal of a patient via the adhesive Doppler pad comprising one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver integrated therein;

detecting an ECG signal of the patient via the defibrillation-monitoring pads; and

integrating the pulse signal and the ECG signal and determining therefrom if a pulse is present, measuring blood flow, and determining whether a shockable rhythm is present.

40. The computer readable storage as recited in claim 39, further comprising positioning the one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver at a predetermined orientation to detect the pulse signal of the patient indicative of cerebral perfusion and a duration of which is indicative of blood flow.

41. A computer readable storage controlling a computer in a cardiac resuscitation system and comprising

a process of positioning an adhesive Doppler pad relative to a carotid artery of a patient to monitor a pulse signal;

positioning defibrillation-monitoring pads on the patient to monitor a signal indicative of a shockable rhythm;

integrating the pulse signal and the signal indicative of a shockable rhythm;

determining shock therapy is not advised for a patient when the integrated signal indicates that a pulse is detected or a shockable rhythm is not detected; and

determining the shock therapy is advised for a patient when the integrated signal indicates that a pulse is not detected or a shockable rhythm is detected.

42. The computer readable storage as recited in claim 41, further comprising processing the pulse signal to quantify blood flow in the patient.

43. The computer readable storage as recited in claim 41, further comprising processing the integrated signal to refine the determination of whether or not the shock therapy is advised.

44. The computer readable storage as recited in claim 41, further comprising providing an impedance measurement stimulus to determine if the defibrillation-monitoring pads are positioned so as to make good contact with the patient.

45. A computer readable storage controlling a computer in a cardiac resuscitation system and comprising

a process of integrating a pulse signal and a signal indicative of a shockable rhythm of a patient;

determining shock therapy is not advised for a patient when the integrated signal indicates that a pulse is detected or a shockable rhythm is not detected; and

determining the shock therapy is advised for a patient when the integrated signal indicates that a pulse is not detected or a shockable rhythm is detected.

46. The computer readable storage as recited in claim 45, further comprising

connecting an adhesive Doppler pad and defibrillation-monitoring pads to an AED or a SAED via a single conductive cable, wherein each of the Doppler pad and the defibrillation-monitoring pads comprise a pictorial instruction providing guidance to a user as to placement of each pad on the patient;

positioning the adhesive Doppler pad relative to a carotid artery of a patient to monitor the pulse signal; and

positioning the defibrillation-monitoring pads on the patient to monitor the shockable rhythm.

47. A computer readable storage controlling a computer in a cardiac resuscitation system and comprising

a process of connecting an adhesive Doppler pad and defibrillation-monitoring pads to an AED or a SAED via a single conductive cable, wherein each of the Doppler pad and defibrillation-monitoring pads comprise a pictorial instruction providing guidance to a user as to placement of each pad on the patient;

positioning the adhesive Doppler pad relative to a carotid artery of a patient to monitor a pulse signal, wherein the adhesive Doppler pad comprises one of multiple transmitters and receivers, a single transmitter and multiple receivers, and multiple transmitters and a single receiver positioned at predetermined orientation;

processing the pulse signal to quantify blood flow in the patient;

positioning defibrillation-monitoring pads on the patient to monitor a signal indicative of a shockable rhythm;

integrating the pulse signal and the signal indicative of a shockable rhythm;

determining shock therapy is not advised for a patient when the integrated signal indicates that a pulse is detected or a shockable rhythm is not detected;

determining the shock therapy is advised for a patient when the integrated signal indicates that a pulse is not detected or a shockable rhythm is detected;

refining the integrated signals; and

providing an impedance measurement stimulus to determine if the defibrillation-monitoring pads are positioned so as to make good contact with the patient.