Ligating and dividing organic structures

Details Ligating and dividing organic structures Ligating and dividing organic structures

1976-10-08

1978-05-02

Michell, Robert W.

Surgery

Truss

Pad

128305, A61B 1711

Patent

active

040869261

ABSTRACT:
A cartridge is provided for ligating and dividing organic structures such as blood vessels or a band of tissue containing a plurality of blood vessesls, nerves or the like. The cartridge operates in three stages and is adapted to associate with an instrument which provides power to the cartridge. After the structure is inserted between the jaws of the cartridge, the cartridge jaws close, a pair of pushers moves forward and ligates the structure at two spaced apart locations with a pair of surgical staples, and a knife then comes forward and divides the ligated structure at a position intermediate the pair of staples. The staple feeding arrangement comprises a pair of belts advanced by the pushers, the belts each carrying a plurality of staples. The staples are transferred from the plane of the belts to the plane of the pushers by ramp surfaces. The belts are kept from backing up during the return stroke of the pushers by a pair of detents associated with the belts. The knife is associated with the main body of the cartridge by means of a novel shifter mechanism in such a manner that the initial movement of the knife causes the jaws of the cartridge to close. A mechanism is provided to prevent the knife from severing the ligated structure in the event, for example, that all of the staples have been expelled from the cartridge. Finally, a cartridge lock mechanism maintains the operative elements of the cartridge in proper position until the cartridge is mounted on the instrument.

REFERENCES:
patent: 3545444 (1970-12-01), Green
patent: 3584628 (1971-06-01), Green
patent: 3665924 (1972-05-01), Nolles et al.
patent: 3683927 (1972-08-01), Noiles
patent: 3740994 (1973-06-01), DeCarlo, Jr.
patent: 3955581 (1976-05-01), Spasiano et al.

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