Dual electrode lead and method for brain target localization in

Details Dual electrode lead and method for brain target localization in Dual electrode lead and method for brain target localization in

1998-01-20

2000-01-04

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical energy applicator

600378, A61N 105

Patent

active

060119969

ABSTRACT:
A lead for brain target localization in functional stereotactic brain surgery, the lead having at its distal end a micro-electrode for use in recording single cell discharge patterns so as to identify functional boundaries between brain structures; and a macro-electrode for delivering test stimulation for determining target location for optimal therapeutic benefit and minimum side effects. The macro-test stimulation electrode is carried at the end of the lead length, and has a conventional surface area in the range of 1-20 mm.sup.2 for stimulating chronic stimulation conditions. The micro-electrode is positioned at the distal end of an axially aligned probe which extends distally from the macro-electrode, and has a surface area adapted to enable a single cell recording; e.g., between 0.01 and 1000 .mu.m.sup.2. In an alternate embodiment, the tip micro-electrode is retractable so that the lead can be used for chronic brain stimulation.

REFERENCES:
patent: 4245645 (1981-01-01), Arseneault et al.
patent: 4850359 (1989-07-01), Putz
patent: 4852573 (1989-08-01), Kennedy
patent: 5464446 (1995-11-01), Dressen et al.
patent: 5713847 (1998-02-01), Howard, III et al.

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