Circuit for controlling a receiver in an implanted device

Patent 4676248 Issued on June 30, 1987. Estimated Expiration Date:

September 13, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Method and apparatus for communicating with implanted body function stimulator Patent #: 4539992
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Inventor

Berntson, Peter K.

Assignee

Medtronic, Inc.

Application

No. 06/776082 filed on 09/13/1985

US Classes:

607/59, Control signal storage (e.g., programming)340/518Scanning

Examiners

Primary: Coven, Edward M.

Attorney, Agent or Firm

Merchant, Gould, Smith, Edell, Welter & Schmidt

International Classes

H04B 1/20 (20060101)
A61N 1/372 (20060101)

Abstract

A circuit for controlling a receiver in an implanted device and circuitry for decoding and storing received program signals is disclosed. In the circuit a control circuit periodically activates a receiver to surveil for remotely generating programming signals. When a program signal is detected by the receiver the control circuit latches the receiver into a continuously activated state for a predetermined time interval. If a reset code is detected from subsequently received signals the receiver is held in an activated condition for a further predetermined time interval. Decoding circuits including a timer are reset upon receipt of the refresh code and provide control over sequences of received programming data for use in programming the stimulation mode of output circuits in the implanted device.