Laparoscopic trocar with self-locking port sleeve

Details Laparoscopic trocar with self-locking port sleeve Laparoscopic trocar with self-locking port sleeve

1990-11-19

1992-09-15

Thaler, Michael H.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604174, 606185, A61B 1734

Patent

active

051473160

ABSTRACT:
A laparoscopic trocar has a sleeve which may be selectively fixed to an abdominal wall by a bumper in cooperation with a balloon mounted on the distal end of the sleeve. After the trocar and the distal end of the sleeve are inserted into the abdomen, the trocar is withdrawn from the sleeve and the balloon is inflated by a syringe through the distensible coupling and a balloon inflation duct. The sleeve includes ratchets on its outer surface, and the bumper has a ratchet tooth in its inner channel. The bumper is free to slide over the ratchets in the direction of the balloon in order to clamp the abdominal wall between the bumper and the balloon. The ratchet tooth ensures that the bumper will not move backward along the sleeve, and a hands-free conduit for insertion of surgical instruments into the abdominal cavity is thereby created. The bumper may be released and the balloon deflated to permit removal of the sleeve from the abdomen.

REFERENCES:
patent: 2687131 (1954-08-01), Raiche
patent: 2936760 (1960-05-01), Gants
patent: 3046988 (1962-07-01), Moreau et al.
patent: 3459175 (1969-08-01), Miller
patent: 3817251 (1974-06-01), Hasson
patent: 4112932 (1978-09-01), Chiulli
patent: 4318401 (1982-03-01), Zimmerman
patent: 4664114 (1987-05-01), Ghodsian
patent: 5002557 (1991-03-01), Hasson

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