Surgical stapler

• US 5,221,036 A
• Filed: 06/11/1992
• Issued: 06/22/1993
• Est. Priority Date: 06/11/1991
• Status: Expired due to Fees

• Current Assignee: Haruo Takase
• Original Assignee: Haruo Takase
• Inventors: Takase, Haruo
• Primary Examiner(s): Yost, Frank T.
• Assistant Examiner(s): SCHROCK, ALLAN
• Application Number:
  US07/898,400
• Time in Patent Office: 376 Days
• Field of Search: 227/19, 227/175, 227/176, 227/177, 227/178, 227/179, 227/181, 227/113
• US Class Current: 227/19
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 2017/07228 Arrangement of the staples
• CPC Class Codes: A61B 2017/07264 characterised by its staple forming cavities, e.g. geometry or material

Abstract

A surgical suturing stapler uses a staple cartridge for containing substantially U-shaped staples, which cartridge can be detachably fitted into a cartridge holder placed between two jaws. The staples can be easily loaded into the staple cartridge by detaching the cartridge from the stapler. When closing the jaws between which the stapler cartridge is placed, the staples in the cartridge are discharged and inserted into bodily tissues or the like to be sutured. By using the staple cartridge magnetized, the staples of metallic material are magnetically retained within the staple cartridge.

Claims

1. A surgical stapler, comprising:

a first jaw having a plurality of staple extruding pieces thereon;

a second jaw having at least one row of anvil grooves, each said anvil groove comprising at least one arc-shaped bottom surface comprising a single arc having a length substantially equal to the height of the leg portions of a staple, and said anvil grooves of said at least one row being arranged aslant relative to the direction of said at least one row of anvil grooves;

a cartridge holding member mounted between said first and second jaws and having a cartridge hole;

a staple cartridge having at least one row of staple chambers therein into which staples can be inserted, said staple cartridge being detachably fitted into said cartridge hole in said cartridge holding member, said staple chambers being located opposite to said staple extruding pieces and said anvil grooves, and said staple chambers of said at least one row being arranged aslant relative to the direction of said at least one row of staple chambers;

wherein said first jaw, said cartridge holding member and said second jaw are pivotally connected by a first axial pin, a first handle is connected to said first jaw by a second axial pin, and a second handle is connected to said second jaw through a third axial pin;

wherein said first and second handles are pivotally connected by a fourth axial pin so as to open and close said first and second jaws by operating said first and second handles; and

wherein each said anvil groove has two said arc-shaped bottom surfaces staggered in position relative to each other in the lengthwise direction.

2. The surgical stapler according to claim 1, wherein said staple cartridge has two rows of said staple chambers.

3. The surgical stapler according to claim 1, wherein said staple cartridge has two rows of said staple chambers, the second said row having said staple chambers arranged in a line in the direction of said second row.

4. The surgical stapler according to claim 1, wherein said two arc-shaped bottom surfaces of each said anvil groove extend in lengthwise directions laterally adjacent to each other.

5. The surgical stapler according to claim 1, wherein said staple cartridge has a magnetic member for attracting staples magnetically.

6. The surgical stapler according to claim 1, wherein said staple cartridge is made of a magnetic material and is magnetized.

7. The surgical stapler according to claim 1, wherein said cartridge holding member has a step portion formed in the lower surface thereof about said cartridge hole, and said stapler cartridge has a flange for engaging said step portion.

8. The surgical stapler of claim 1, wherein two rows of said anvil grooves are provided, both said rows of anvil grooves being arranged aslant, and two rows of said staple chambers are provided, both said rows of staple chambers being arranged aslant.

9. The surgical stapler of claim 8, wherein said rows on said second jaw have a ditch therebetween formed in the surface of said second jaw.