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    • 10. 发明授权
    • Cryogenic surgical tool
    • 低温手术工具
    • US4770171A
    • 1988-09-13
    • US13949
    • 1987-02-12
    • Ronald J. SwerenAlan Schwartz
    • Ronald J. SwerenAlan Schwartz
    • A61B18/00A61B18/02A61B17/36
    • A61B18/02A61B2018/00101
    • A cryogenic surgical tool (10) is provided to contact and freeze predetermined areas of tissue. The cryogenic surgical tool (10) consists of a low thermal conductivity handle (12) which is threadedly secured to an applicator member (20). The applicator member (20) includes an internal bore (26) within which is fitted an absorbent member (34) which absorbs a cryogenic liquid. The applicator member (20) includes an applicator first end surface (24) which contacts tissue and draws heat therefrom to extremely low temperatures, thus generally destroying the tissue contacted. The applicator member (20) includes a plurality of housing sidewall through openings (32) which are vent holes and allow for vaporization of the cryogenic liquid from the absorbent member (34) and prevents undue pressures from building up a cavity formed by bore (26) within housing member (20).
    • 提供一种低温外科手术工具(10)来接触和冻结组织的预定区域。 低温外科手术工具(10)由低导热性手柄(12)组成,该手柄螺纹地固定到涂抹器构件(20)上。 涂抹器构件(20)包括内孔(26),其内装有吸收低温液体的吸收构件(34)。 涂抹器构件(20)包括施加器第一端表面(24),其接触组织并将热量从其中吸取到极低温度,从而通常破坏接触的组织。 施用器构件(20)包括多个壳体侧壁通孔(32),其是通气孔并允许来自吸收构件(34)的低温液体蒸发,并且防止不必要的压力建立由孔(26)形成的空腔 )在壳体构件(20)内。