Sheathed knife instrument

Details Sheathed knife instrument Sheathed knife instrument

1985-09-27

1987-06-23

Bennet, Henry A.

Surgery

Truss

Pad

604 22, 30286, A61F 1732

Patent

active

046745009

ABSTRACT:
A surgical instrument comprising an elongate reusable handle and disposable, interchangeable sheathed blade modules. Each sheathed blade module including an elongate tubular sheath having a laterally arced blade guiding forward end portion of either a cylindrical or tubular configuration. The arced portion defines a guide path for a blade received within the sheath. The blade, through interconnection with a slide member on the handle module, is selectively moved between a first protected position entirely within the sheath and a second position wherein the surgical tip portion of the blade is exposed. Outward movement of the blade tip portion is directed along a predetermined path by the curved forward end portion of the sheath, while at the same time providing for a complete exposure of the blade tip portion beyond the structure of the sheath. The slide member of the sheath is controlled by a single finger of the one hand used to hold the handle module.

REFERENCES:
patent: 1339692 (1920-05-01), Diamant
patent: 2131780 (1938-10-01), Storz
patent: 2258287 (1941-10-01), Grieshaber
patent: 2843128 (1958-07-01), Storz
patent: 3835859 (1974-09-01), Roberts et al.
patent: 4067340 (1978-01-01), Le Noir
patent: 4491132 (1985-01-01), Aikins

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