Implantable stimulator that prevents DC current flow without the

Details Implantable stimulator that prevents DC current flow without the Implantable stimulator that prevents DC current flow without the

1995-05-23

2000-03-07

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

607 2, 607 37, 607 57, A61N 132, A61N 116

Patent

active

06035237&

ABSTRACT:
An implantable living tissue stimulator avoids the use of conventional coupling capacitors in its output stage, yet still prevents an average dc current flow from flowing through living tissue in electrical contact with the stimulator. The output stage generates and applies a biphasic stimulating current pulse to selected paired output terminals. The terminals, in turn, are electrically connected to respective electrodes which are positioned so as to contact the living tissue to be stimulated. In one embodiment, special circuitry is employed within the output stage to block dc current flow through the living tissue and to balance the electrical charge that is delivered to the living tissue. In another embodiment, the electrodes themselves are made from a material that allows them to function as a capacitor. In yet an additional embodiment, the coupling capacitors are integrated into the leads that connect the output terminals of the output stage with the electrodes.

REFERENCES:
patent: 5312444 (1994-05-01), Bocek et al.
patent: 5531774 (1996-07-01), Schulman et al.

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