Locking trocar sleeve

Surgery – Instruments – Cutting – puncturing or piercing

Patent

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Details

606191, A61M 3700

Patent

active

052324516

ABSTRACT:
An improved trocar sleeve (10) is disclosed for use in laparoscopic surgery. The sleeve (10) is provided with an expanded mushroom hinge (20) at the first end (14) of the sleeve inserted into the abdominal cavity. The mushroom hinge (20) can be expanded within the abdominal cavity to abut against the inner surface of the abdominal wall (18) to hold the sleeve in place. A split seal (52) having a concave shape facing the first end (14) of the trocar sleeve (10) is provided to prevent loss of pressurized gas from within the abdominal cavity through the sleeve (10) as the pressure of the gas itself urges the first and second seal lips (78, 80) on opposite sides of the slit in the seal into sealing engagement. In a second embodiment, a member (138) is rotated relative to an end member (150) to actuate the mushroom hinge.

REFERENCES:
patent: 3039468 (1962-06-01), Price
patent: 4627838 (1986-12-01), Cross et al.
patent: 4655752 (1987-04-01), Honkanen et al.
patent: 4861334 (1989-08-01), Nawaz
patent: 5002557 (1991-03-01), Hasson

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