Claims
- 1. A surgical stapler comprising:
- an elongate body having forward and rearward ends, and having a longitudinally extending guideway opening through its forward end;
- a ram having a forming end portion and being mounted in said guideway with said forming end portion adjacent the forward end of the body for sliding movement along the guideway between a forward position with its forming end portion at said forward end and a retracted position with its forming end portion spaced from said forward end;
- staple-holding means attached to said body for feeding a staple into said guideway when said ram is in its retracted position;
- at least one toggle-joint linkage, said toggle-joint linkage comprising first and second arms of generally equal length, said arms having adjacent ends pivotally attached together with the end of said first arm opposite said adjacent ends being pivotally attached to said body adjacent its rearward end and the end of said second arm opposite said adjacent ends projecting toward the forward end of said body and being pivotally attached to said ram, the adjacent ends of the arms of said toggle-joint linkage being opposed and projecting away from said body when said ram is in its retracted position so that pressing the adjacent ends of the arms of said toggle-joint linkage in a direction transverse of said guideway will move said ram from its retracted to its forward position; and
- an anvil fixed to the forward end of said body and projecting across said guideway, said anvil and the forming end portion of said ram being shaped to close a staple therebetween upon movement of said ram to its forward position.
- 2. A surgical stapler according to claim 1 wherein said ram has a substantially greater width than thickness in directions normal to said longitudinally extending guideway, and said toggle-joint linkage is attached to said body and said ram so that the adjacent ends of said arms move in a direction gradually parallel to the width of said ram upon pressing of said adjacent ends toward each other.
RELATED APPLICATION
This is a continuation of application Ser. No. 26,071, filed Apr. 3, 1979, now U.S. Pat. No. 4,256,251, which is a continuation-in-part of my application Ser. No. 899,350, filed Apr. 24, 1978, now abandoned.
US Referenced Citations (21)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1094230 |
Dec 1960 |
DEX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
26071 |
Apr 1979 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
899350 |
Apr 1978 |
|