Surgical cutter

Details Surgical cutter Surgical cutter

1998-09-03

1999-12-28

Buiz, Michael

Surgery

Instruments

Cutting, puncturing or piercing

606170, 606174, 604 22, A61B 1732

Patent

active

060075546

ABSTRACT:
A cutter for enlarging an incision made during laparoscopic surgery comprising an outer tube having an open end, a closed end, and two longitudinally extending opposing slots therein and an inner tube slidably disposed within the outer tube and having two handles extending through the slots in the outer tube. An elongated hollow blade sheath is connected to the inner tube and extends out of the opening of the outer tube. One longitudinal edge of the sheath is open and there is a cutout along the open side edge near the end of the sheath. There is an elongated blade connected to the outer tube and disposed within the blade sheath. The blade is shorter than the blade sheath and has a cutting edge along its short end. There is a compression spring connecting the inner tube to the blade, so that pulling the handles toward the closed end of the outer tube causes the blade sheath to retract and expose the blade in the cutout of the blade sheath. Releasing the handles causes the blade sheath to extend and cover the blade. The cutter allows for controlled and defined enlargement of a laparoscopic incision for removal of a gall bladder without rupturing the gall bladder.

REFERENCES:
patent: 5667519 (1997-09-01), Ramsey

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