Surgery – Instruments – Heat application
Patent
1992-06-26
1994-03-01
Rosenbaum, C. Fred
Surgery
Instruments
Heat application
604264, 604280, 606 37, 606 40, 606 49, A61M 500
Patent
active
052902820
ABSTRACT:
A coagulating cannula is described which effectively operates in a localized area quite rapidly, without the need for removal of motorized shaving instruments, by the incorporation of a selective manually operative electrocautery positioned at a distal end of the shaft of the cannula. The cannula incorporates a nonconductive cylindrical hollow shaft and a nonconductive hub portion through which the motorized shaving instruments are inserted and removed. The electrocautery component enters the cannula at an electrical contact which protrudes from an outer surface of the hub portion and continuously runs within the hub and into a wall of the shaft terminating at the distal end of the shaft in a prominance at the tip of the shaft. The prominance is of a small surface area such that the prominance provides a small electrical contact area with a surrounding saline environment, thereby providing a high resistance arcing to the surrounding tissue that needs to be coagulated.
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Bockelman Mark
Casscells Christopher D.
Rosenbaum C. Fred
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