The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2000
Filed:
Jan. 20, 1998
Frans L Gielen, Eckelrade, NL;
Victor P Duysens, Grevenbicht, NL;
Johan F Gijsberg, Munstergeleen, NL;
Medtronic, Inc, Minneapolis, MN (US);
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.