END EFFECTOR COUPLING ARRANGEMENTS FOR A SURGICAL CUTTING AND STAPLING INSTRUMENT

• US 20160000439A1
• Filed: 09/09/2015
• Published: 01/07/2016
• Est. Priority Date: 02/15/2008
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Weisenburgh, William B. II, Morgan, Jerome R., Moore, Kyle P., Ransick, Mark H., Hall, Steven G., Tanguay, Randall J., Messerly, Jeffrey D., Robertson, Galen C., Zwolinski, Andrew M., Swayze, Jeffrey S., Huitema, Thomas W., Armstrong, Glen A., Parihar, Shailendra K., Timm, Richard W., Doll, Kevin R., Smith, Bret W., Kelly, William D., Kolata, Ronald J., Uth, Joshua R., Scheib, Charles J., Ortiz, Mark S., Hoffman, Douglas B., Weizman, Patrick A., Bruewer, Dean B., Blair, Gregory B., Shelton, Frederick E. IV, Korvick, Donna L., Hueil, Geoffrey C.
• Granted Patent: US 9,839,429 B2
• Time in Patent Office: Days
• 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 17/3205 Excision instruments
• CPC Class Codes: A61B 17/3209 Incision instruments
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/2931 with releasable head

Abstract

In various embodiments, a surgical stapling instrument can include a handle, a shaft extending from the handle, wherein the shaft defines an axis, and a disposable loading unit which is assembled to the shaft in a direction which is transverse to the shaft axis. Such a connection between the disposable loading unit and the shaft can prevent, or at least inhibit, the disposable loading unit from being unintentionally displaced proximally and/or distally relative to the shaft of the surgical instrument. The surgical stapling instrument and/or disposable loading unit can further include a threaded collar and/or detent assembly configured to hold the disposable loading unit in place. In various embodiments, a disposable loading unit can include a lockout feature which can prevent, or at least inhibit, an expended disposable loading unit from being reassembled to the elongated body of the surgical instrument.

Claims

1-9. -9. (canceled)

10. A disposable loading unit for use with a surgical stapling instrument, said disposable loading unit comprising:

a shaft portion comprising a proximal end, wherein said proximal end comprises a bayonet connection which is rotated to operably connect said disposable loading unit with the surgical stapling instrument;

a selectively replaceable staple cartridge, comprising;

a cartridge body comprising a plurality of staple cavities; and

a plurality of staples removably stored in said staple cavities;

an anvil configured to deform said staples; and

a firing member configured to eject said staples from said staple cavities during a firing stroke of said firing member, wherein said selectively replaceable staple cartridge can be replaced after said firing stroke without having to replace the entirety of said disposable loading unit.

11. The disposable loading unit of claim 10, further comprising a lockout configured to selectively prevent said firing member from being advanced through said firing stroke.

12. The disposable loading unit of claim 10, further comprising a lockout configured to prevent said replaceable staple cartridge from being re-fired within said disposable loading unit after said staple cartridge has already been at least partially fired.

13. A replaceable disposable loading unit for use with a surgical stapling instrument, said replaceable disposable loading unit comprising:

a shaft portion comprising a proximal end operably engageable with the surgical stapling instrument;

a first jaw comprising a replaceable staple cartridge, wherein said replaceable staple cartridge comprises;

a cartridge body comprising a plurality of staple cavities; and

a plurality of staples removably stored in said staple cavities;

a second jaw comprising an anvil configured to deform said staples;

a firing member configured to eject said staples from said staple cavities during a firing stroke of said firing member; and

a lockout configured to selectively prevent said firing member from being advanced through said firing stroke.

14. A surgical stapling system, comprising:

a surgical instrument comprising a handle and a shaft extending from said handle;

a replaceable disposable loading unit, comprising;

a shaft portion comprising a proximal end, wherein said proximal end comprises a bayonet connection which is rotated to operably connect said disposable loading unit with said shaft of said surgical stapling instrument;

a selectively replaceable staple cartridge, comprising;

a cartridge body comprising a plurality of staple cavities; and

a plurality of staples removably stored in said staple cavities; and

an anvil configured to deform said staples; and

a firing member configured to eject said staples from said staple cavities during a firing stroke of said firing member, wherein said selectively replaceable staple cartridge can be replaced after said firing stroke without having to replace the entirety of said replaceable disposable loading unit.

15. The surgical stapling system of claim 14, further comprising a lockout configured to selectively prevent said firing member from being advanced through said firing stroke.

16. The surgical stapling system of claim 14, further comprising a lockout configured to prevent said replaceable staple cartridge from being re-fired within said disposable loading unit after said staple cartridge has already been at least partially fired.