Surgical stapler drive apparatus

Details Surgical stapler drive apparatus Surgical stapler drive apparatus

1984-05-10

1986-06-24

Bell, Paul A.

Elongated-member-driving apparatus

With means to assemble plural pieces of work

227DIG1, 227129, A61B 1700

Patent

active

045963509

ABSTRACT:
In a surgical stapler having a driver and an anvil for forming a staple in tissue, a four-bar linkage is driven by a drive cam which is at least partially curved. The curved cam provides, with the linkage, an increasing mechanical advantage for reducing forces required to operate the stapler and to form a staple. The drive minimizes the range of forces required to operate the stapler throughout an operating cycle. Cam and linkage relationships are disclosed.

REFERENCES:
patent: 3873016 (1975-03-01), Fishbein
patent: 3893612 (1975-07-01), Bone
patent: 4049177 (1977-09-01), Bussard
patent: 4109844 (1978-08-01), Becht
patent: 4196836 (1980-04-01), Becht
patent: 4204623 (1980-05-01), Green
patent: 4331277 (1982-05-01), Green
patent: 4349028 (1982-09-01), Green
patent: 4416407 (1983-11-01), Bone
patent: 4502622 (1985-03-01), Lee
patent: 4523695 (1985-06-01), Braun et al.

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