Trocar sleeves having a ball valve

Details Trocar sleeves having a ball valve Trocar sleeves having a ball valve

1978-11-13

1980-11-18

Michell, Robert W.

Surgery

Truss

Pad

2511492, A61B 1734, F16K 5100

Patent

active

042339820

ABSTRACT:
A trocar sleeve of the kind having a widened part forming a housing between the distal portion of the sleeve and its proximal portion, which latter extends from a plug for the widened housing part, and a normally closed ball valve in the widened housing part openable by a trocar passing through the sleeve.
The widened part forming the housing receives an insert of U-shaped cross section secured to the plug to stress an inserted sealing gasket of deformation-resistant plastics material which provides a valve seating. The space in the U formed by the insert forms a space for the ball of the ball valve to move in, and the ball, is connected to a shaft insertable in the insert and carrying a tangentially loaded helical spring.

REFERENCES:
patent: 1497054 (1924-07-01), Allabach
patent: 1818508 (1931-09-01), Scott
patent: 1858766 (1932-05-01), Dabroski
patent: 2641485 (1953-06-01), Dupuy
patent: 3288142 (1966-10-01), Hakim
patent: 3730216 (1973-04-01), Arnett et al.
patent: 3754564 (1973-09-01), Naumburg et al.
patent: 3768102 (1973-11-01), Kwan-Gett et al.
patent: 3897810 (1975-08-01), Arnett et al.
patent: 3911977 (1975-10-01), Berger
patent: 4007909 (1977-02-01), Buseth et al.

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