Dual battery system for implantable defibrillator

• US 5,235,979 A
• Filed: 07/16/1992
• Issued: 08/17/1993
• Est. Priority Date: 03/15/1991
• Status: Expired due to Term

• Current Assignee: Ela Medical S.A. (LivaNova Plc)
• Original Assignee: Angeion Corporation (Niterra Co., Ltd.)
• Inventors: Adams, Theodore P.
• Primary Examiner(s): Howell, Kyle L.
• Assistant Examiner(s): SCHAETZLE, KENNEDY
• Application Number:
  US07/913,626
• Time in Patent Office: 397 Days
• Field of Search: 128/419 D, 128/419 PG, 128/419 PS
• US Class Current: 607/5
• CPC Class Codes: A61N 1/3787 from an external energy source
• CPC Class Codes: A61N 1/3931 Protecting, e.g. back-up systems
• CPC Class Codes: A61N 1/3956 Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
• CPC Class Codes: A61N 1/3975 Power supply A61N1/378 takes precedence
• CPC Class Codes: H01M 16/00 Structural combinations of different types of electrochemical generators
• CPC Class Codes: H01M 6/5016 Multimode utilisation

Abstract

An implantable defibrillator comprising a first implantable energy source connected to an implantable monitoring circuit means and a second implantable energy source having a predetermined different energy output than said first implantable energy source connected to an implantable inverter/output circuit means. The implantable monitoring circuit is powered by the first implantable energy source and the implantable inverter/output circuit is powered by the second implantable energy source.

Claims

1. An implantable defibrillator comprising:

a. a first implantable energy source connected to an implantable monitoring circuit means, said implantable monitoring circuit means being powered by said first implantable energy source; and

,

b. a second implantable energy source having a predetermined different energy output than said first implantable energy source, connected to an implantable inverter/output circuit means, said implantable inverter/output circuit means being powered by said second implantable energy source.

2. The implantable defibrillator according to claim 1 wherein said first implantable energy source is a relatively low voltage source, and wherein said second implantable energy source is a relatively high voltage source.

3. The implantable defibrillator according to claim 2 wherein said relatively low voltage source is 1.5 to 3.0 volt battery.

4. The implantable defibrillator of claim 3 wherein said battery is a lithium iodide battery.

5. The implantable battery defibrillator according to claim 2 wherein said relatively high voltage source is a 6 to 18 volt battery.

6. The implantable defibrillator according to claim 5 wherein said battery is selected from the group consisting of a lithium vanadium pentoxide battery, silver lithium vanadium pentoxide or a lithium vanadium oxide chemistry.

7. The implantable defibrillator of claim 1 wherein said implantable monitoring circuit means is electrically connected to said inverter/output circuit means so as to automatically trigger an output from said inverter/output circuit means.