U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Structure and method of manufacture of an implantable microstimulator

Patent 5405367 Issued on April 11, 1995. Estimated Expiration Date: Icon_subject March 3, 2013. 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.

Patent References

3229684

3646940

3796221

Implantable unipolar pacemaker with improved outer electrode plate
Patent #: 4006748
Issued on: 02/08/1977
Inventor: Schulman

Bone generating method and device
Patent #: 4026304
Issued on: 05/31/1977
Inventor: Levy

Identification device
Patent #: 4333072
Issued on: 06/01/1982
Inventor: Beigel

Apparatus and method for the stimulation of a human muscle
Patent #: 4524774
Issued on: 06/25/1985
Inventor: Hildebrandt

Wide band inductive transdermal power and data link
Patent #: 4679560
Issued on: 07/14/1987
Inventor: Galbraith

Transcutaneous electrical nerve stimulation device and method
Patent #: 4763656
Issued on: 08/16/1988
Inventor: Nauman

Multi-electrode neurological stimulation apparatus
Patent #: 4934368
Issued on: 06/19/1990
Inventor: Lynch

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Inventors

Assignee

Application

No. 025994 filed on 03/03/1993

US Classes:

607/61, Energy source outside generator body607/50Promoting tissue growth or healing

Examiners

Primary: Kamm, William E.

Attorney, Agent or Firm

International Class

A61N 001/32

Abstract

An implantable microstimulator has a structure which is manufactured to be substantially encapsulated within a hermetically-sealed housing inert to body fluids, and of a size and shape capable of implantation in a living body. The internal structure of the microstimulator comprises a coil adapted to function as the secondary winding of a transformer and receive power and control information. Circuit means, including control electronics, a capacitor and electrodes are provided. The electrodes, which may be made one of iridium and the other of tantalum and placed on opposite ends of the microstimulator, or alternatively, an iridium electrode at each end of the microstimulator, are at least partially exposed and provide electrical, stimulating pulses to the body.

Other References

  • Guyton, et al., "Theory and Design of Capacitor Electrodes for Chronic Stimulation", Medical and Biological Engineering, vol. 12 pp. 613-619 (Sep. 1974)
  • Hildebrandt, et al., "Neuromuscular Functional Stimulation by Miniaturized Implantable Electric Stimulators", Proceedings of the Seventh International Symposium on External Control of Human Extremities, Dubrovnik, Yugoslavia (Sep. 7-12, 1981)
  • An article in CRC Reviews in Bioengineering (Sep. 1981)
  • Robblee, et al., "Activated IR: An Electrode Suitable for Reversible Charge Injection in Saline Solution", Journal Electrochemical Society, vol. 130, pp. 731-733
  • Rose, et al., "Assessment of Capacitor Electrodes for Intracortical Neural Stimulation", Journal of Neuroscience Methods, vol. 12, pp. 181-193 (1985)
  • Kazimierczuk, et al., "Exact Analysis of Class E Tuned Power Amplifier at any Q and Switch Duty Cycle", IEEE Transactions on Circuits and Systems, vol. CAS-34:2, pp. 149-159 (Feb. 1987)
  • Heetderks, "RF Powering of Millimeter and Submillimeter-Sized Neural Prosthetic Implants", IEEE Transactions and Biomedical Engineering, vol. 35:5 (May 1988
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