Surgical stapler with improved locking mechanism

Details Surgical stapler with improved locking mechanism Surgical stapler with improved locking mechanism

1997-08-11

1999-03-09

Sipos, John

Elongated-member-driving apparatus

Surgical stapler

With lockout

A61B 1704

Patent

active

058789383

ABSTRACT:
A surgical stapler for effecting simultaneous cutting and stapling of tissue includes a frame and a staple cartridge positionable in the frame. The stapler includes a knife blade mounted for movement distally of the staple cartridge, the knife blade having a retraction lock feature including a locking portion for abutment to a roof member of a spacer carried on the frame in a locked position, to prevent movement of the knife blade, unless the stapler is fitted with a fresh, unused staple cartridge. The locking portion is spring loaded by a leaf spring into the locked position. The knife blade includes a spring notch which coacts with the leaf spring to mechanically lift and pivotally thrust the knife blade to the locked position when the knife blade is retracted after use. The lift or thrust feature clears out tissue accumulation which enhances the ability of the knife to restore to its full elevated return position.

REFERENCES:
patent: 4892244 (1990-01-01), Fox et al.
patent: 4955959 (1990-09-01), Tompkins
patent: 5129570 (1992-07-01), Schulze et al.
patent: 5485947 (1996-01-01), Olson et al.
patent: 5584425 (1996-12-01), Savage et al.
patent: 5669544 (1997-09-01), Schulze et al.
patent: 5673840 (1997-10-01), Schulze et al.
patent: 5673841 (1997-10-01), Schulze et al.
patent: 5673842 (1997-10-01), Bittner et al.
patent: 5680983 (1997-10-01), Plyley et al.
patent: 5692668 (1997-12-01), Schulze et al.
patent: 5797538 (1998-08-01), Heaton et al.

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