Connie Marie Davis

US Patent:

20030109802, Jun 12, 2003

Filed:

Dec 12, 2001

Appl. No.:

10/021622

Inventors:

Paul Laeseke - Sun Prairie WI, US
Kelly Stevens - Madison WI, US
Thomas Winter - Middleton WI, US
Fred Lee - Madison WI, US
Frank Fronczak - Madison WI, US
John Webster - Madison WI, US
Connie Davis - Mercer Island WA, US

International Classification:

A61B010/00

US Classification:

600/564000

Abstract:

A method and apparatus for reducing bleeding in biopsy procedures provides a cauterizing electrical current through an introducer needle as the needle is withdrawn. A majority of the length of the introducer needle may be insulated to concentrate the cauterization at its tip, and a field smoothing cauterizing stylet may be used in conjunction with the tube to provide more even cauterization and/or instrumentation to monitor cauterization. Cauterization may be controlled by the speed of withdrawal of the introducer needle as guided manually or automatically by the instrumentation.