Apparatus and method for assembling staple drivers in a cartridge

• US 5,836,147 A
• Filed: 04/03/1997
• Issued: 11/17/1998
• Est. Priority Date: 06/15/1995
• Status: Expired due to Term

• Current Assignee: Schnipke Engraving Company Incorporated
• Original Assignee: Schnipke Family Partnership
• Inventors: Schnipke, Leonard H.
• Primary Examiner(s): JONES, DAVID B
• Application Number:
  US08/832,092
• Time in Patent Office: 593 Days
• Field of Search: 59/71, 59/77, 29/464, 29/811.2, 264/138, 264/249, 227/110, 227/120, 227/176.1
• US Class Current: 59/71
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: B29C 2045/0086 Runner trees, i.e. several articles connected by a runner
• CPC Class Codes: Y10T 29/49895 Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
• CPC Class Codes: Y10T 29/53487 Assembling means comprising hand-manipulatable implement

Abstract

Apparatus for assembling staple drivers in a cartridge to be used during surgery includes a fixture having tapered converging passageways to guide staple drivers into alignment with pockets in the cartridge. After the staple drivers are properly in place to be pushed into the pockets of the cartridge, a plunger with blade-shaped projections descends such that the blades project through the fixture and the passageways therein to push the drivers into the pockets. To prevent the drivers from falling out of the pockets through the entrance opening where they were inserted, a pocket locking or blocking element is applied to the cartridge after the drivers are in the pockets.

Claims

1. Apparatus for assembling staple drivers in a cartridge to be used during surgery comprising,

said cartridge being an elongated generally rectangular shape, one of the sides of said rectangle including a channel extend longitudinally along said side;

a plurality of pocket openings in said side, said pocket openings being linearly aligned generally parallel with said channel, said pocket openings being one end of a plurality of pockets extending completely through said cartridge from pocket entrances on the opposite side of said cartridge from said pocket openings, said pocket openings having a geometric shape;

a bracket having a trough configured to receive said cartridge only by linear insertion with said pocket opening facing away from overlying plungers,

a guide fixture mounted between said plungers and said cartridge including guide passages converging toward said pocket entrances;

said passages being formed to receive a plurality of tree mounted staple drivers of a size and geometric shape generally corresponding to the size and geometric shape of said pocket openings;

said tree being formed with a plurality of branches and with a staple driver on one end of each branch, said staple drivers being linearly aligned;

said guide passages converging to a size and geometric shape generally corresponding to the size and geometric shape of said staple drivers, whereby the narrowest parts of said guide passages are a snug fit for said staple drivers and thereby said narrowest parts are structurally configured to prevent misalignment of said staple drivers as said staple drivers are separated from the branches of said tree;

said overlying plungers including blades aligned with said guide passages and pockets mounted on a plate,

said plate being mounted to reciprocate with respect to said bracket whereby said blades engage said staple drivers after said staple drivers are separated from said tree and push said staple drivers into said pockets.

2. The apparatus of claim 1 including slots through one side of said fixture to allow the passage of said tree branches as the tree is manipulated to place said staple drivers at the narrowest end of said guide passages and partially into said pocket prior to the time said staple drivers are separated from said branches.

3. The apparatus of claim 2 including a piston and cylinder combination to cause said plunger to reciprocate, said piston and cylinder combination being actuated manually.