True multi-fire surgical stapler configured to fire staples of different sizes

• US 8,070,036 B1
• Filed: 03/09/2009
• Issued: 12/06/2011
• Est. Priority Date: 09/06/2007
• Status: Active Grant

• Current Assignee: Touchstone International Medical Science Co. Ltd
• Original Assignee: Cardica Incorporated
• Inventors: Knodel, Bryan D.
• Primary Examiner(s): Low, Lindsay
• Assistant Examiner(s): Tecco, Andrew M
• Application Number:
  US12/400,790
• Time in Patent Office: 1,002 Days
• Field of Search: 2271751-1821
• US Class Current: 227/178.1
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 2017/07228 Arrangement of the staples
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2943 Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments

Abstract

A surgical apparatus may include a knife, a staple holder along which the knife is slidable, a plurality of feeder belts located on each side of the knife, and a plurality of staples separably connected to each feeder belt, where the staple holder is configured to fire at least two separate sizes of staples. A surgical method of treating tissue within the body of a patient may include providing an endocutter having a knife, a staple holder along which the knife is slidable, a plurality of feeder belts located on each side of the knife, and a plurality of staples separably connected to each feeder belt, wherein the staple holder is configured to fire at least two separate sizes of staples; engaging tissue of the patient with the staple holder; deploying a plurality of staples having a first size; disengaging tissue of the patient from the staple holder; once again engaging tissue of the patient with the staple holder; and deploying a plurality of staples having a second size.

Claims

1. Surgical apparatus, comprising:

a knife;

a staple holder along which said knife is slidable;

a plurality of endless feeder belts located on each side of said knife; and

a first plurality of staples frangibly connected to at least one said feeder belt; and

a second plurality of staples frangibly connected to at least one said feeder belt to which at least a subset of said first plurality of staples is connected;

wherein said first plurality of staples have a different size than said second plurality of staples.

2. The surgical apparatus of claim 1, wherein said first plurality of staples is sized differently from, and spaced longitudinally from, said second plurality of staples.

3. The surgical apparatus of claim 1, wherein said staples in said pluralities are sized for a specific surgical procedure.

4. The surgical apparatus of claim 1, wherein a first said feeder belt located on one side of said knife includes a plurality of staples having a first size, and a second said feeder belt located on the same side of said knife includes a plurality of staples having a second size different from said first size.

5. The surgical apparatus of claim 4, wherein different said feeder belts are independently actuable.

6. The surgical apparatus of claim 1, further comprising a handle operably connected to said feeder belts;

wherein at least one said feeder belt includes at least a first group and a second group of staples separably connected thereto; and

wherein in response to user input said handle moves at least one said feeder belt to a position in which a selected one of said first plurality of staples and said second plurality of staples is located in firing position.

7. The surgical apparatus of claim 6, wherein said handle advances at least one said feeder belt to move said selected one of said first plurality of staples and said second plurality of staples to firing position.

8. The surgical apparatus of claim 6, wherein said handle retracts at least one said feeder belt to move said selected one of said first plurality of staples and said second plurality of staples to firing position.