# US 8,150,529 B2 · Medical devices and systems having separate power sources for enabling different telemetry systems

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- Number: US 8,150,529 B2
- Document ID: US8150529B2
- Status: Granted
- Kind: B2
- Application number: 12/104,301
- Filed: 2008-04-16
- Published: 2009-10-22
- Granted: 2012-04-03
- Earliest claimed: 2008-04-16
- Assignees: Pacesetter, Inc.
- Inventors: Jeffery D. Snell; Gene A. Bornzin
- Web page: https://patentgrep.com/patent/US8150529B2

## CPC

- A61N 1/378: Electrical supply
- A61N 1/025: {Digital circuitry features of electrotherapy devices, e.g. memory, clocks, processors}
- A61N 1/37217: {characterised by the communication link, e.g. acoustic or tactile}
- Y10S 128/904: Telephone telemetry
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An implantable medical device includes a first, short-range telemetry circuit; a second, long-range telemetry circuit; a first power system that powers the first telemetry circuit; and a second power system that powers the second telemetry circuit. The second power system includes an internal charging system and a rechargeable battery coupled to the internal charging system. The internal charging system may be configured for electromagnetic-inductive or RF-transmission coupling with an external charging system. A controller monitors the energy level of the rechargeable battery and provides an signal indicative of the level.

## Claims

### Claim 1

A medical system comprising:
an implantable medical device having a housing, a short-range telemetry circuit within the housing, a long-range telemetry circuit within the housing, other internal circuitry within the housing, a first power system within the housing that powers the short-range telemetry circuit and the other internal circuitry, and a rechargeable second power system within the housing that powers the long-range telemetry circuit; and
an external charging system operative to recharge the second power system.

### Claim 2 (depends on 1)

The system of claim 1 further comprising an external device configured for coupling with one or both of the short-range telemetry circuit and the long-range telemetry circuit.

### Claim 3 (depends on 2)

The system of claim 2 wherein the external device is configured for inductive coupling with the short-range telemetry circuit.

### Claim 4 (depends on 2)

The system of claim 2 wherein the external device is configured for RF coupling with the short-range telemetry circuit.

### Claim 5 (depends on 2)

The system of claim 2 wherein the external device is configured for RF coupling with the long-range telemetry circuit.

### Claim 6 (depends on 2)

The system of claim 2 wherein the implantable medical device further includes a controller configured to monitor the energy level of the second power system and output a signal related to the energy level for transmission to the external device.

### Claim 7 (depends on 6)

The device of claim 6 wherein the signal comprises a warning signal when the energy level is below a threshold.

### Claim 8 (depends on 6)

The device of claim 6 wherein the signal comprises a diagnostic signal indicative of the energy level.

### Claim 9 (depends on 6)

The device of claim 6 wherein the output signal is operative to generate one of an audio, a visual, or a physically detectable indication.

### Claim 10 (depends on 6)

The device of claim 6 wherein the output signal is transmitted by one of the first telemetry circuit and the second telemetry circuit to an external device.