Portable defibrillator with disposable power pack

• US 5,658,316 A
• Filed: 07/03/1995
• Issued: 08/19/1997
• Est. Priority Date: 07/03/1995
• Status: Expired due to Fees

• Current Assignee: Automatic Defibrillator Incorporated
• Original Assignee: Automatic Defibrillator Incorporated
• Inventors: Lamond, Pierre R., Strul, Bruno
• Primary Examiner(s): Jastrzab, Jeffrey R.
• Application Number:
  US08/497,738
• Time in Patent Office: 778 Days
• Field of Search: 607/5-8, 607/142, 128/696, 128/710-712, 307/150
• US Class Current: 607/5
• CPC Class Codes: A61N 1/3904 External heart defibrillators [EHD]
• CPC Class Codes: A61N 1/39046 User protection from shock
• CPC Class Codes: A61N 1/3975 Power supply A61N1/378 takes precedence

Abstract

A portable defibrillator device has a housing including a disposable power pack and a main electronic unit. Treatment, ground pad and ECG electrodes are also included. One or more non-rechargeable batteries are positioned in the power pack, with each battery including battery contacts. An ECG detection circuit provides a control signal representative of heart activity. A defibrillation circuit is responsive to the control signal and is connected to the treatment electrode to deliver a discharge to the patient. In another embodiment, the portable defibrillator'"'"'s housing includes a removable power pack and a main electronic unit. Disposed within the power pack are one or more batteries. A treatment electrode is capable of delivering a defibrillation shock and also measure ECG activity of a patient. A ground pad electrode is also included. An ECG detection circuit provides the control circuit, and a defibrillation circuit receives the control signal and delivers a treatment shock when appropriate. The defibrillation circuit is substantially positioned in the main electronic unit.

Claims

1. A portable defibrillator device, comprising:

a housing including a disposable power pack and a main electronic unit with an ECG detection circuit that provides a control signal representative of heart activity, wherein the power pack includes an insulator member configured to be removed from the power pack to provide a coupling of the power pack to the main electronic unit;

a treatment electrode coupled to the power pack and the main electronic unit;

a ground pad electrode coupled to the power pack and the main electronic unit;

an ECG electrode coupled to the ECG detection circuit;

one or more non-rechargeable batteries positioned in the power pack, each battery including battery contacts; and

a defibrillation circuit responsive to the control signal and configured to deliver a discharge to the treatment electrode, wherein the defibrillation circuit is included as at least a part of the main electronic unit.

2. The portable defibrillator of claim 1, further comprising:

a removable insulator positioned between battery contacts and the main electronic unit, wherein the non-rechargeable batteries are electrically connected to the defibrillation circuit when the removable insulator is removed.

3. The portable defibrillator of claim 1, wherein the functionality of the treatment electrode and the ECG electrode are included in a single electrode.

4. The portable defibrillator of claim 1, wherein the housing includes a receiving slot with battery contacts.

5. The portable defibrillator of claim 4, wherein the power pack is removably positioned in the receiving slot.

6. The portable defibrillator of claim 1, further comprising:

a battery monitoring circuit coupled to the main electronic unit.

7. The portable defibrillator of claim 6, wherein the battery monitoring circuit is continuously connected to the non-rechargeable batteries when the power pack is positioned adjacent to the main electronic unit.

8. The portable defibrillator of claim 6, wherein the battery monitoring circuit periodically checks a status of the non-rechargeable batteries.

9. The portable defibrillator device of claim 1, further comprising:

a microprocessor coupled to the defibrillation circuit.

10. The portable defibrillator device of claim 1, wherein the ECG circuit includes a signal conditioner and an amplifier.

11. The portable defibrillator device of claim 10, wherein the signal conditioner includes one or more filters and one or more amplifiers.

12. The portable defibrillator device of claim 1, wherein the defibrillation circuit includes a high voltage generator, an energy storage capacitor and a discharge switch.

13. The portable defibrillator device of claim 1, wherein the non-rechargeable batteries are continuously connected to the battery monitoring circuit when the power pack is positioned in the housing, and the power pack is coupled to the defibrillation circuit when the insulator member is removed and the power pack is positioned in the housing.

14. The portable defibrillator of claim 1, further comprising:

an operator support that permits an operator of the portable defibrillator device to physically apply the treatment electrode when the treatment electrode is positioned on at least a portion of an exterior surface of the power pack to a patient and create a contact between the patient and the treatment electrode without subjecting the operator to a shock when the treatment electrode delivers a shock to the patient.

15. The portable defibrillator of claim 14, wherein the operator support includes at least one handle attached to the housing.

16. The portable defibrillator of claim 14, wherein the operator support includes at least two handles attached to the housing.

17. The portable defibrillator of claim 1, wherein the treatment electrode includes an electro-conductive gel.

18. The portable defibrillator of claim 1, wherein the ground pad electrode has an electrode surface that includes an electro-conductive gel.

19. The portable defibrillator of claim 1, wherein the ECG detection circuit receives ECG signals from the ECG electrode and processes the ECG signals and wherein the power pack includes a memory chip for storing the processed ECG signals.

20. A portable defibrillator device, comprising:

a housing including a removable power pack including one or more non-rechargeable batteries and a main electronic unit including an ECG detection circuit providing a control signal representative of heart activity, wherein the power pack includes an insulator member configured to be removed from the power pack to provide a coupling of the power pack to the main electronic unit;

a treatment electrode configured to deliver a defibrillation shock and measure ECG activity of a patient, wherein the treatment electrode is coupled to the power pack and the main electronic unit;

a ground pad electrode coupled to the power pack and the main electronic unit;

a defibrillation circuit responsive to the control signal and configured to deliver a discharge to the treatment electrode, wherein at least a portion of the defibrillation circuit is included in the main electronic unit.

21. The portable defibrillator of claim 20, wherein the ECG detection circuit receives ECG signals from the treatment electrode and processes the ECG signals and wherein the power pack includes a memory chip for storing the processed ECG signals.

22. The portable defibrillator of claim 20, wherein the housing includes a receiving slot with battery contacts adapted to make electrical contact with the batteries in the power pack.

23. The portable defibrillator of claim 20, further comprising:

a battery monitoring circuit coupled to the main electronic unit.

24. The portable defibrillator of claim 23, wherein the battery monitoring circuit is continuously connected to the batteries when the power pack is positioned adjacent to the main electronic unit.

25. The portable defibrillator device of claim 20, further comprising:

a microprocessor included in the defibrillation circuit.

26. The portable defibrillator device of claim 20, wherein the ECG circuit includes a signal conditioner and an amplifier.

27. The portable defibrillator device of claim 26, wherein the signal conditioner includes one or more filters and one or more amplifiers.

29. The portable defibrillator of claim 20, further comprising:

an operator support that permits an operator of the portable defibrillator device to physically apply the treatment electrode when the treatment electrode is positioned on at least a portion of an exterior surface of the power pack to a patient and create a contact between the patient and the treatment electrode without subjecting the operator to a shock when the treatment electrode delivers a shock to the patient.

30. The portable defibrillator of claim 29, wherein the operator support includes at least one handle attached to the housing.

31. The portable defibrillator of claim 29, wherein the use support includes at least two handles attached to the housing.

32. The portable defibrillator of claim 29, further comprising:

a defibrillation circuit enable switch positioned at one of a handles, wherein upon closing of the enable switch the defibrillation circuit is coupled to the main electronic unit.

33. The portable defibrillator of claim 20, wherein the treatment electrode includes an electro-conductive gel.

34. The portable defibrillator of claim 20, wherein the ground pad electrode has an electrode surface that includes an electro-conductive gel.

28. The portable defibrillator device of claim 28, wherein the defibrillation circuit includes a high voltage generator, an energy storage capacitor and a discharge switch.

35. A potable defibrillator device, comprising:

a housing including a power pack;

a treatment electrode coupled to the power pack;

a ground pad electrode coupled to the power pack;

an ECG electrode for generating ECG signals coupled to the power pack;

one or more bakeries positioned in the power pack each battery including battery contacts;

an ECG detection circuit for receiving the ECG signals from the ECG electode processing the ECG signals providing a control signal representative of heart activity;

a defibrillation circuit responsive to the control signal and configured to deliver a discharge to the treatment electrode; and

a memory device configured to store the processed ECG signals before and after application of a defibrillation shock, wherein the memory device is positioned in the power pack.

36. The portable defibrillator device of claim 35, wherein the memory device is one or more memory chips.

37. A portable defibrillator device, comprising:

a housing including a power pack;

a treatment electrode coupled to the power pack;

a ground pad electrode coupled to the power pack;

an ECG electrode coupled to the power pack;

an insulator packaging the power pack one or more of the electrodes the insulator being at least partially removable from the power pack;

one or more batteries positioned in the power pack, each of the one or more batteries including battery contacts;

an ECG detection circuit for receiving the ECG signals from the ECG electrode, processing the ECG signals and providing a control signal representative of heart activity, wherein the ECG detection circuit is coupled to the power pack; and

a defibrillation circuit coupled to the treatment electrode and the ground pad electrode and responsive to the control signal and configured to deliver a discharge to the treatment electrode, wherein the defibrillation circuit is coupled to the power pack.

38. The portable defibrillator device of claim 37, comprising:

a memory device to store the processed ECG signals before and after application of a defibrillation shock, wherein the memory device is positioned in the power pack.

39. The portable defibrillator device of claim 38, wherein the memory device is one or more memory chips.

40. A portable defibrillator device, comprising:

a housing including a power pack;

a treatment electrode configured to deliver a defibrillation shock and measure ECG activity of a patient, wherein the treatment electrode is coupled to the power pack;

a ground pad electrode coupled to the power pack;

one or more batteries positioned in the power pack, each battery including battery contacts;

an ECG detection circuit for receiving the ECG signals from the ECG electrode processing the ECG signals and providing a control signal representative of heart activity;

a defibrillation circuit responsive to the control signal and configured to deliver a discharge to the treatment electrode; and

a memory device configured to store the processed ECG signals before and after application of a defibrillation shock, wherein the memory device is positioned in the power pack.

41. A portable defibrillator device, comprising:

a housing including a power pack;

a treatment electrode configured to deliver a defibrillation shock and measure ECG activity of a patient, wherein the treatment electrode is coupled to the power pack;

a ground pad electrode coupled to the power pack;

an insulator packaging the power pack with one or more of the electrodes the insulation being at least partially removable from the power pack;

one or more batteries positioned in the power pack, each battery including battery contacts;

an ECG detection circuit configured to supply a control signal representative of heart activity, wherein the ECG detection circuit is coupled to the power pack; and

a defibrillation circuit coupled to the treatment electrode and the ground pad electrode responsive to the control signal and configured to deliver a discharge to the treatment electrode, wherein the defibrillation circuit is coupled to the power pack.

42. A portable defibrillator device, comprising:

a housing including a removable power pack including one or more non-rechargeable batteries and a main electronic unit including an ECG detection circuit providing a control signal representative of heart activity, wherein the power pack includes an insulator member configured to be at least partially removed from the power pack to provide a coupling of the power pack to the main electronic unit;

a treatment electrode configured to deliver a defibrillation shock to a patient and coupled to the power pack and the main electronic unit; and

a ground pad electrode coupled to the power pack and the main electronic unit;

a defibrillation circuit, coupled to the ground pad electrode and the treatment electrode and responsive to the control signal, configured to deliver a discharge to the treatment electrode, wherein at least a portion of the defibrillation circuit is included in the main electronic unit.