US 5,344,431 A · Method and apparatus for determination of end-of-service for implantable devices

Abstract

A method and apparatus for determination of battery end-of-service in a medical device in which the medical device comprises a cathode limited electrochemical cell having an active metal anode and a manganese dioxide cathode and means for digital telemetry of cell voltage. The sloped, well defined voltage curve of such a cell during cell discharge combined with precise information available through digital telemetry allows for improved determination of battery end-of-service for the medical device.

Claims10

Dependent claims

A medical device having battery end-of-service indication comprising:

(a) an implantable housing;
(b) a medical device within said implantable housing,
(c) a cathode-limited electrochemical cell having an active metal anode and a manganese dioxide cathode within the housing;
(d) analog voltage measurement means within the housing for measuring a voltage of the electrochemical cell;
(e) analog-to-digital conversion means within the housing for converting the measured analog voltage into a digital signal;
and
(f) telemetry means within the housing for telemetry of the digital signal.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

07/944,872Filed 14 Sep 1992 · continuation in part

Priority

22 Jan 1990

Granted

6 Sep 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61N 1/3727
Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data: characterised by…
A61N 1/3708
Pacemaker parameters: for power depletion
A61N 1/37211
Arrangements in connection with the implantation of stimulators: means for communicating with stimulators
A61N 1/378
Arrangements in connection with the implantation of stimulators: electrical supply

Family

Serial468,407Parent of this continuation · filed 22 Jan 1990

Serial765,475Parent of this continuation-in-part · filed 25 Sep 1991

Serial896,641Parent of this continuation-in-part · filed 10 Jun 1992

US 5,127,404 AParent of this continuation-in-part

US 5,344,431 AThis patent

From the US filing history. Foreign family members aren’t listed.

Method and apparatus for determination of end-of-service for implantable devices

Life of this patent

Method and apparatus for determination of end-of-service for implantable devices

Life of this patent

Abstract

Claims10