Surgical stapling instruments with lockout arrangements for preventing firing system actuation when a cartridge is spent or missing
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/068
A61B-017/072
A61B-017/10
A61B-090/00
A61B-017/00
A61B-017/29
A61B-034/00
출원번호
US-0742933
(2015-06-18)
등록번호
US-10154841
(2018-12-18)
발명자
/ 주소
Weaner, Lauren S.
Hensel, Adam D.
Wise, Austin E.
Jones, Daniel V.
Brinkerhoff, Josiah J.
Goldenbogen, Michael W.
출원인 / 주소
Ethicon LLC
인용정보
피인용 횟수 :
0인용 특허 :
129
초록▼
A surgical stapling instrument comprising an elongate shaft assembly that defines a shaft axis and includes a surgical end effector that is operably coupled thereto by an articulation joint. The surgical end effector includes a cartridge support member that is configured to operably support a surgic
A surgical stapling instrument comprising an elongate shaft assembly that defines a shaft axis and includes a surgical end effector that is operably coupled thereto by an articulation joint. The surgical end effector includes a cartridge support member that is configured to operably support a surgical staple cartridge therein. The surgical instrument further includes a longitudinally movable firing beam that extends through the articulation joint and is selectively axially movable from a starting position to an ending position within the surgical end effector. A firing beam locking assembly comprising a biasing member is operably supported on the articulation joint and is configured to apply a biasing motion to the firing beam to bias the firing beam into a locked position wherein the firing beam is prevented from moving from the starting to the ending position unless an unfired surgical staple cartridge is operably supported in the cartridge support member.
대표청구항▼
1. A surgical stapling instrument, comprising: an elongate shaft assembly defining a shaft axis;a surgical end effector operably coupled to said elongate shaft assembly by an articulation joint such that said surgical end effector is selectively articulatable relative to said elongate shaft assembly
1. A surgical stapling instrument, comprising: an elongate shaft assembly defining a shaft axis;a surgical end effector operably coupled to said elongate shaft assembly by an articulation joint such that said surgical end effector is selectively articulatable relative to said elongate shaft assembly about an articulation axis that is transverse to said shaft axis, said surgical end effector comprising a cartridge support member that is configured to operably support a surgical staple cartridge therein;a longitudinally movable firing beam extending through said articulation joint and being selectively axially movable from a starting position to an ending position within said surgical end effector; anda firing beam locking assembly comprising a biasing member operably supported on said articulation joint and being configured to apply a biasing motion to said longitudinally movable firing beam to bias said longitudinally movable firing beam into a locked position wherein said longitudinally movable firing beam is prevented from moving from said starting to said ending position unless an unfired surgical staple cartridge is operably supported in said cartridge support member. 2. The surgical stapling instrument of claim 1, wherein said biasing member is supported on a middle support member that interfaces with said cartridge support member and said elongate shaft assembly, said middle support member being configured to laterally support said longitudinally movable firing beam during articulation of said surgical end effector about said articulation axis. 3. The surgical stapling instrument of claim 1, wherein said biasing member is configured to avoid applying said biasing motion to said longitudinally movable firing beam when said surgical end effector is being articulated. 4. The surgical stapling instrument of claim 3, wherein said longitudinally movable firing beam comprises a locking cam formed on a portion thereof for engagement with said biasing member. 5. A surgical stapling instrument, comprising: an elongate shaft assembly defining a shaft axis;a surgical end effector operably coupled to said elongate shaft assembly by an articulation joint such that said surgical end effector is selectively articulatable relative to said elongate shaft assembly about an articulation axis that is transverse to said shaft axis, said surgical end effector comprising a cartridge support member that is configured to operably support a surgical staple cartridge therein;a longitudinally movable firing beam extending through said articulation joint and being selectively axially movable from a starting position to an ending position within said surgical end effector; anda firing beam locking assembly comprising a biasing member operably supported on said articulation joint and being configured to apply a biasing motion to said longitudinally movable firing beam to bias said longitudinally movable firing beam into a locked position wherein said longitudinally movable firing beam is prevented from moving from said starting to said ending position unless an unfired surgical staple cartridge is operably supported in said cartridge support member;wherein said biasing member is configured to avoid applying said biasing motion to said longitudinally movable firing beam when said surgical end effector is being articulated;wherein said longitudinally movable firing beam comprises a locking cam formed on a portion thereof for engagement with said biasing member; andwherein said biasing member comprises a planar body comprising a window located therein such that said locking cam protrudes therein during said articulation of said surgical end effector. 6. The surgical stapling instrument of claim 1, wherein said biasing member biases said longitudinally movable firing beam into a locked position upon initial application of a firing motion to said longitudinally movable firing beam unless said unfired surgical staple cartridge is operably supported within said cartridge support member. 7. The surgical stapling instrument of claim 1, wherein said unfired surgical staple cartridge comprises: a plurality of surgical staples operably supported within a cartridge body; anda wedge sled axially movable through said cartridge body to eject said surgical staples therefrom when said wedge sled is moved from an unfired position to a fired position therein, said wedge sled being configured for operable engagement with said longitudinally movable firing beam when said longitudinally movable firing beam is in said starting position and said wedge sled is in said unfired position. 8. The surgical stapling instrument of claim 7, wherein said wedge sled is configured to prevent said firing beam from entering a locked position when said wedge sled is in said unfired position and upon application of an initial firing motion to said longitudinally movable firing beam. 9. The surgical stapling instrument of claim 1, wherein said biasing member biases said firing beam into a locked position upon initial application of a firing motion to said firing beam unless a wedge sled in a surgical staple cartridge that is supported within said cartridge support member is in an unfired position within said surgical staple cartridge and in operable engagement with said longitudinally movable firing beam. 10. A surgical stapling instrument, comprising: a surgical end effector comprising: an elongate channel configured to operably support a surgical staple cartridge therein; andan anvil supported relative to said elongate channel such that one of said anvil and said elongate channel is selectively movable relative to the other one of said anvil and said elongate channel between open and closed positions and wherein said surgical stapling instrument further comprises an elongate shaft assembly defining a shaft axis, said elongate shaft assembly comprising: an articulation joint operably coupled to said surgical end effector to facilitate selective articulation of said surgical end effector relative to said elongate shaft assembly about an articulation axis that is transverse to said shaft axis; anda closure assembly axially movable in response to closure motions applied thereto, said closure assembly comprising: a distal closure member segment; anda proximal closure member segment movably interfacing withsaid distal closure member segment to accommodate articulation of said surgical end effector about said articulation axis, said proximal closure member segment configured to move said one of said anvil and said elongate channel between said open and closed positions upon said application of said closure motions to said closure assembly and wherein said surgical stapling instrument further comprises:a longitudinally movable firing beam extending through said articulation joint and being selectively axially movable from a starting position to an ending position within said surgical end effector, said longitudinally movable firing beam configured to operably engage a corresponding portion of an unfired surgical staple cartridge operably supported in said elongate channel when said longitudinally movable firing beam is in said starting position; anda firing beam locking assembly comprising a biasing member operably supported on said distal closure member segment for biasing said longitudinally movable firing beam into a locked position wherein said longitudinally movable firing beam is prevented from moving from said starting position to said ending position unless an unfired surgical staple cartridge is operably supported in said elongate channel. 11. The surgical stapling instrument of claim 10, wherein said longitudinally movable firing beam has a sloped portion that is configured for engagement with said biasing member when said longitudinally movable firing beam is in said starting position. 12. The surgical stapling instrument of claim 10, wherein said unfired surgical staple cartridge comprises: a plurality of surgical staples operably supported within a cartridge body; anda wedge sled axially movable through said cartridge body to eject said surgical staples therefrom when said wedge sled is moved from an unfired position to a fired position therein, said wedge sled being configured for operable engagement with said longitudinally movable firing beam when said longitudinally movable firing beam is in said starting position and said wedge sled is in said unfired position. 13. The surgical stapling instrument of claim 12, wherein said wedge sled is configured to prevent said firing beam from entering a locked position when said wedge sled is in said unfired position and upon application of an initial firing motion to said longitudinally movable firing beam. 14. A surgical stapling instrument, comprising: an elongate shaft assembly defining a shaft axis;a surgical end effector operably coupled to said elongate shaft assembly by an articulation joint such that said surgical end effector is selectively articulatable relative to said elongate shaft assembly about an articulation axis that is transverse to said shaft axis, said surgical end effector comprising a cartridge support member that is configured to operably support a surgical staple cartridge therein;a longitudinally movable firing beam including a portion extending through said articulation joint and being selectively axially movable from a starting position to an ending position within said surgical end effector, said longitudinally movable firing beam configured to operably engage a corresponding portion of an unfired surgical staple cartridge operably supported in said cartridge support member when said longitudinally movable firing beam is in said starting position; andmeans for providing lateral support to said portion of said longitudinally movable firing beam extending through said articulation joint as said surgical end effector is articulated about said articulation axis, said means for providing further comprising means for preventing said longitudinally movable firing beam from moving from said starting position to said ending position unless an unfired surgical staple cartridge is operably supported in said cartridge support member, said means for providing located proximal to said surgical end effector. 15. The surgical stapling instrument of claim 14, wherein said means for providing lateral support further comprises a middle support member that is movably attached to said cartridge support member and said elongate shaft assembly, said middle support member comprising a slot for movably receiving said portion of said longitudinally movable firing beam therethrough and wherein said means for preventing comprises a biasing member that is supported on said middle support member and is configured to apply a biasing motion to said longitudinally movable firing beam to move said longitudinally movable firing beam into a locked position wherein said longitudinally movable firing beam is prevented from moving from said starting position to said ending position unless said unfired surgical staple cartridge is operably supported in said cartridge support member. 16. The surgical stapling instrument of claim 15, wherein said longitudinally movable firing beam comprises a locking cam formed on said portion of said longitudinally movable firing beam for engagement with said biasing member. 17. A surgical stapling instrument, comprising: an elongate shaft assembly defining a shaft axis;a surgical end effector operably coupled to said elongate shaft assembly by an articulation joint such that said surgical end effector is selectively articulatable relative to said elongate shaft assembly about an articulation axis that is transverse to said shaft axis, said surgical end effector comprising a cartridge support member that is configured to operably support a surgical staple cartridge therein;a longitudinally movable firing beam including a portion extending through said articulation joint and being selectively axially movable from a starting position to an ending position within said surgical end effector, said longitudinally movable firing beam configured to operably engage a corresponding portion of an unfired surgical staple cartridge operably supported in said cartridge support member when said longitudinally movable firing beam is in said starting position; andmeans for providing lateral support to said portion of said longitudinally movable firing beam extending through said articulation joint as said surgical end effector is articulated about said articulation axis, said means for providing further comprising means for preventing said longitudinally movable firing beam from moving from said starting position to said ending position unless an unfired surgical staple cartridge is operably supported in said cartridge support member;wherein said means for providing lateral support further comprises a middle support member that is movably attached to said cartridge support member and said elongate shaft assembly, said middle support member comprising a slot for movably receiving said portion of said longitudinally movable firing beam therethrough and wherein said means for preventing comprises a biasing member that is supported on said middle support member and is configured to apply a biasing motion to said longitudinally movable firing beam to move said longitudinally movable firing beam into a locked position wherein said longitudinally movable firing beam is prevented from moving from said starting position to said ending position unless said unfired surgical staple cartridge is operably supported in said cartridge support member;wherein said longitudinally movable firing beam comprises a locking cam formed on said portion of said longitudinally movable firing beam for engagement with said biasing member; andwherein said biasing member comprises a planar body comprising a window located therein such that said locking cam protrudes therein during said articulation of said surgical end effector. 18. The surgical stapling instrument of claim 14, wherein said unfired surgical staple cartridge comprises: a plurality of surgical staples operably supported within a cartridge body; anda wedge sled axially movable through said cartridge body to eject said surgical staples therefrom when said wedge sled is moved from an unfired position to a fired position therein, said wedge sled being configured for operable engagement with said longitudinally movable firing beam when said longitudinally movable firing beam is in said starting position and said wedge sled is in said unfired position. 19. The surgical stapling instrument of claim 18, wherein said wedge sled is configured to prevent said firing beam from entering a locked position when said wedge sled is in said unfired position and upon application of an initial firing motion to said longitudinally movable firing beam.
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