Staple cartridge

• US 9,326,771 B2
• Filed: 03/04/2011
• Issued: 05/03/2016
• Est. Priority Date: 09/19/2008
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery LLC (Johnson & Johnson)
• Inventors: Baxter, Chester O. III, Bedi, James J.
• Primary Examiner(s): Tecco, Andrew M
• Application Number:
  US13/040,604
• Publication Number:
  US 20110155787A1
• Time in Patent Office: 1,887 Days
• Field of Search: 227/175.1, 227/176.1, 227/180.1, 227/175.4
• US Class Current: 1/1
• 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 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 2017/00446 for use only by lefthanded or only by righthanded persons
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07242 achieving different staple heights during the same shot, e.g. using an anvil anvil having different heights or staples of different sizes
• CPC Class Codes: A61B 2017/0725 with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• CPC Class Codes: A61B 2090/08021 of the patient or his organs
• CPC Class Codes: A61B 2090/0813 Accessories designed for easy sterilising, i.e. re-usable
• CPC Class Codes: A61B 2090/0814 Preventing re-use

Abstract

A surgical stapling instrument can include a staple cartridge, wherein the staple cartridge includes a cartridge body, a plurality of staples, a cutting member stored therein, and means for covering, enclosing, encasing, and/or protecting the cutting member. In various embodiments, the staple cartridge body can include a housing which can extend around and/or over the cutting member when the cutting member is in an unfired position. In various circumstances, the housing can protect a clinician as they assemble the staple cartridge to the surgical stapling instrument.

Claims

1. A stapling assembly, comprising:

a staple cartridge body, comprising;

a tissue-supporting surface;

a housing;

a first slot, wherein said first slot extends through said tissue-supporting surface, and wherein said first slot is proximal to said housing;

a second slot, wherein said second slot is distal to said first slot; and

a plurality of staple cavities;

a plurality of staples, wherein said staples are positioned in said staple cavities;

an attachment portion configured to be attached to a surgical instrument;

an incisable portion, wherein said incisable portion extends above said tissue-supporting surface; and

a cutting member positioned within said staple cartridge body prior to said staple cartridge body being assembled to the surgical instrument, wherein said cutting member comprises a distal tissue cutting surface, wherein said cutting member comprises an engagement portion configured to be engaged with a firing member of the surgical instrument, wherein said cutting member is configured to be slid between a first position and a second position, wherein when said cutting member is in said first position said housing extends overtop said distal tissue cutting surface, and wherein said distal tissue cutting surface is configured to incise said incisable portion to permit completion of a firing stroke.

2. A staple cartridge assembly, comprising:

a staple cartridge body, comprising;

a proximal end;

a distal end;

a tissue-supporting surface;

a slot, wherein said slot extends through said tissue-supporting surface, and wherein said slot is proximal to said housing;

a housing; and

a plurality of staple cavities;

a plurality of staples, wherein said staples are positioned in said staple cavities;

an attachment portion configured to be attached to a surgical instrument;

an incisable portion, wherein said incisable portion extends above said tissue-supporting surface; and

a cutting member positioned within said staple cartridge body prior to said staple cartridge body being assembled to the surgical instrument, wherein said cutting member comprises a distal cutting surface, wherein said cutting member is configured to be moved between a proximal position and a distal position during a firing stroke, wherein said housing extends overtop said distal cutting surface during at least a portion of said firing stroke, wherein said distal cutting surface is configured to incise said incisable portion during said firing stroke, and wherein when said cutting member is in said proximal position said distal cutting surface is positioned proximally with respect to said incisable portion of said staple cartridge assembly.

3. A stapling assembly, comprising:

a staple cartridge body, comprising;

a proximal end;

a distal end;

a tissue-supporting surface;

a housing;

a slot, wherein said slot extends through said tissue-supporting surface, and wherein said slot is proximal to said housing; and

a plurality of staple cavities;

a plurality of staples, wherein said staples are positioned in said staple cavities;

an anvil assembly, wherein said anvil assembly is configured to form said staples to produce different formed staple heights;

an attachment portion configured to be attached to a surgical instrument;

an incisable portion, wherein said incisable portion extends above said tissue-supporting surface; and

a cutting member positioned within said staple cartridge body prior to said staple cartridge body being assembled to the surgical instrument, wherein said cutting member comprises a distal cutting surface, wherein said cutting member is configured to be moved between a proximal position and a distal position during a firing stroke, wherein said housing extends overtop said distal cutting surface during at least a portion of said firing stroke, wherein said distal cutting surface is configured to incise said incisable portion to complete said firing stroke, and wherein when said cutting member is in said proximal position said distal cutting surface is positioned proximally with respect to said incisable portion of said staple cartridge assembly.

4. The stapling assembly of claim 3, wherein said staple cartridge body comprises a first portion and a second portion, wherein said slot is positioned intermediate said first portion and said second portion.

5. The stapling assembly of claim 4, wherein said housing comprises:

a first wall extending from said first portion;

a second wall extending from said second portion; and

a top wall extending between said first wall and said second wall.

6. The stapling assembly of claim 3, wherein said housing is integrally-formed with said staple cartridge body.

7. The stapling assembly of claim 3, further comprising a sled slidably positioned within said staple cartridge body, wherein said sled is configured to deploy said staples from said staple cartridge body.

8. The stapling assembly of claim 3, wherein said staple cartridge body extends in a longitudinal direction between a proximal end and a distal end, and wherein said cutting member comprises an engagement portion configured to be engaged by a firing system of said stapling assembly during said completion of said firing stroke.

9. The stapling assembly of claim 3, wherein said staple cartridge body is configured to be at least one of snap-fit and press-fit into a staple cartridge channel of the surgical instrument.