Transmitter of the telemetry device of an implant

• US 6,490,487 B1
• Filed: 06/22/2000
• Issued: 12/03/2002
• Est. Priority Date: 06/25/1999
• Status: Expired due to Term

• Current Assignee: Biotronik Mess-Und Therapiegeraete GmbH & Company Ingenieurbuero Berlin (Biotronik SE & Company KG)
• Original Assignee: Biotronik Mess-Und Therapiegeraete GmbH & Company Ingenieurbuero Berlin (Biotronik SE & Company KG)
• Inventors: Potschadtke, Jens, Kraus, Michael, Lang, Martin, Beetz, Klemens, Neudecker, Johannes, Lang, Berhard, Nagelschmidt, Axel
• Primary Examiner(s): EVANISKO, GEORGE ROBERT
• Application Number:
  US09/599,935
• Time in Patent Office: 894 Days
• Field of Search: 607/32, 607/60, 128/903
• US Class Current: 607/60
• CPC Class Codes: A61N 1/37211 Means for communicating with stimulators
• CPC Class Codes: A61N 1/37282 characterised by communication with experts in remote locations using a network
• CPC Class Codes: H03B 2201/0208 the means being an element with a variable capacitance, e.g. capacitance diode
• CPC Class Codes: H03B 5/362 the amplifier being a single transistor H03B5/364 - H03B5/368 take precedence
• CPC Class Codes: Y10S 128/903 Radio telemetry

Abstract

An electromedical implant (1), in particular a cardiac pacemaker, comprising a telemetry device at least for the communication of data to an external apparatus (2), which includes a transmitting device with a transmitter, wherein the transmitter includes an oscillator comprising a first transistor (58) and a resonator (60), and a second transistor (59) forming a buffer stage and an antenna driver.

Claims

1. An electromedical implant implantable in a patient comprising:

a telemetry device at least for the communication of patient data to an external patient data processing apparatus, the telemetry device including;

a transmitting device having a transmitter, the transmitter including;

an oscillator having a first transistor and a resonator;

a second transistor, coupled to the oscillator as a buffer stage and an antenna driver for transmitting the patient data from the electromedical implant to the external patient data processing apparatus; and

a capacitance diode, wherein the capacitance diode is arranged in series with the resonator for frequency modulated transmission of patient data.

2. The electromedical implant as set forth in claim 1, wherein the transistors are bipolar transistors.

3. The electromedical implant as set forth in claim 1, wherein the oscillator is a SAW-stabilized oscillator and the resonator is a SAW-resonator.

4. The electromedical implant as set forth in claim 1, wherein the oscillator is a Colpitts or Clapp circuit.

5. A cardiac pacemaker implantable in a patient comprising:

a telemetry device at least for the communication of patient data to an external patient data processing apparatus, the telemetry device including a transmitting device having a transmitter, the transmitter including;

an oscillator having a first transistor and a resonator;

a second transistor, coupled to the oscillator as a buffer stage and an antenna driver for transmitting the patient data from the cardiac pacemaker to the external patient data processing apparatus; and

a capacitance diode, wherein the capacitance diode is arranged in series with the resonator for frequency modulated transmission of patient data.

6. The cardiac pacemaker as set forth in claim 5, wherein the transistors are bipolar transistors.

7. The cardiac pacemaker as set forth in claim 5, wherein the oscillator is a SAW-stabilized oscillator and the resonator is a SAW-resonator.

8. The cardiac pacemaker as set forth in claim 5, wherein the oscillator is a Colpitts or Clapp circuit.