Cryosurgical instrument with enhanced heat transfer

Surgery – Instruments – Cyrogenic application

Reexamination Certificate

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Details

C606S022000

Reexamination Certificate

active

07967815

ABSTRACT:
Cryosurgical instruments and methods utilizing improved heat transfer characteristics. A cryosurgical device includes: a tubular housing; a cryogen supply passage; a heat exchange enhancing member in the housing, disposed along a longitudinal axis of the housing; an annular cooling passage between the heat exchange enhancing member and the tubular housing; a tip cooling and cryogen flow directing section that transmits a temperature of a cryogen flow to the tip, and an insulation element in the tubular housing.

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