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US 5,573,495 AGranted
Abdominal wall elevator device employing rotatable arms
AssigneeFlexbar Machine Corp.
InventorDavid T. Adler
Life of this patent
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Abstract
An abdominal wall elevator device including a pair of retractable tabs rotatable to 90.degree. with respect to the vertical axis of the device, and selected of a dimension to enter the port of a Trocar in allowing low pressure pneumoperitoneum laparoscopic surgery. In a preferred embodiment of the invention, a removable push-rod incorporates a flat tip to operate on the tenons of a pair of hinges to swing the retractor tabs to the desired angle, to be locked in place.
Claims11
An abdominal wall elevator device comprising:
- a cylindrical tube having an internally threaded first end, an oppositely positioned second end, and a central axis;
- a pair of retractor arms;
- a pair of hinges respectively coupled to said pair of retractor arms for hinging each of said arms to said tube at said second end, with said hinges including a pair of tenons having oppositely slanted face surfaces of substantially equal angle;
- a push-rod inserted within said tube at said first end, said push-rod terminating in a flat tip at a first end thereof and edges of said tip bearing against said slanted face surfaces of said pair of tenons;
- wherein clockwise rotation of said push-rod results in said pair of retractor arms rotating to a position perpendicular to said central axis and wherein counterclockwise rotation of said push-rod results in said pair of retractor arms rotating to a position parallel to said central axis and extending distally from said tube;
- wherein said push-rod is rotatable to open and close said pair of retractor arms in use as said tip edges bear against said slanted face surfaces;
- and wherein said retractor arms are of a dimension to enter the port of a trocar used in laparoscopic surgery.
4 more elements
Dependencies are inferred from the claim text.