EP0621006A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical apparatus with jaws, comprising approximation lockout means
Assignee: United States Surgical Corp
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Filing: 1994-03-22
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Granted: —
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Expires: 2014-03-22
Abstract
Abstract A self contained gas powered endoscopic surgical apparatus (50) is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes an anvil member (56) and a surgical fastener cartridge member (58) mounted to the distal end of an elongated endoscopic portion (54). A tubular collar (60) of the endoscopic portion moves distally to engage the anvil member (56) and bias the anvil member and the cartridge member into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and the cartridge member. A self contained pneumatic system (68) is disposed in the surgical apparatus and is actuable to eject and/or form the surgical fasteners in the clamped body tissue. The apparatus further comprises a locking means for preventing approximation of the anvil member and the cartridge. In one embodiment a clamping interlock is shown which prevents approximation of the jaws when the jaws are either misaligned or improperly inserted into the instrument. In a second embodiment a clamping interlock is shown which directly engages the tubular collar preventing approximation of the jaws when a cartridge member is not fully inserted. In a third embodiment a clamping interlock is shown which directly engages the tubular collar when an unfired cartridge is not present or properly inserted into the instrument.
Inventors
- 👤 Robert C. Savage
- 👤 Paul M. Kasarauskas
- 👤 Joseph F. Jun. Zuzick
- 👤 Jeffrey J. Blewett
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:41
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/072; A61B17/07207; A61B17/00234; A61B2017/0023; A61B2017/00535; A61B2017/00544; A61B2017/07214; A61B17/28; A61B17/29; A61B2017/2926; A61B2017/2927; A61B2017/2929; A61B90/00; A61B90/03; A61B2090/038; A61B90/08; A61B2090/0803; A61B2090/0804; A61B2090/0814
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
184 words
A surgical apparatus for approximating surgical jaw structure comprising: a) a handle; b) an elongated portion defining a longitudinal axis and extending distally from said handle; c) first jaw means mounted to said elongated portion and having a first tissue engaging surface for supporting tissue; d) second jaw means, mounted to said elongated portion, having a second tissue engaging surface and a distal end and a proximal end, said second jaw means being mounted with respect to said elongated housing such that at least the distal end of said second jaw means is movable in directions generally transverse to said longitudinal axis between an open position spaced from said first tissue engaging surface and a closed position wherein said second tissue engaging surface is in close cooperative alignment with said first tissue engaging surface; e) means associated with said elongated portion for moving said second jaw means between said open position and said closed position; and f) lockout means associated with said elongated portion for arresting movement of said means for moving said second jaw means between said open position and said closed position.
Claim 2
Dependent Claim
63 words
The surgical apparatus of claim 1 wherein said lockout means comprises a latch member movably mounted with respect to said elongated housing, said latch member being movable from a locked position engaging said camming member to prevent axial movement thereof when said camming member is in said first position to an unlocked position wherein said latch member is disengaged from said camming member.
Claim 3
Dependent Claim
30 words
The surgical apparatus of any one of the preceding claims, wherein at least one of said first jaw means and said second jaw means is detachable from said elongated portion.
Claim 4
Dependent Claim
33 words
The surgical apparatus of claims 2 or 3, wherein said latch member is urged into said unlocked position when said detachable first or second jaw means is fully inserted into said elongated portion.
Claim 5
Dependent Claim
37 words
The surgical apparatus of claims 2, 3 or 4, wherein said lockout means further comprises a spring mounted with respect to said elongated portion, wherein said spring acts to bias said latch member toward said locked position.
Claim 6
Dependent Claim
29 words
The surgical apparatus of any one of the preceding claims, wherein said latch member in said locked position engages a notched opening in said collar in said first position.
Claim 7
Dependent Claim
41 words
The surgical apparatus of any one of the preceding claims, wherein said first jaw means comprises: a cartridge holding a plurality of ejectable surgical fasteners; and a cam bar adapter removably mounting means for ejecting said surgical fasteners from said cartridge.
Claim 8
Dependent Claim
89 words
The surgical apparatus of any one of the preceding claims, further comprising means for ejecting said surgical fasteners and means for actuating said means for ejecting said surgical fasteners, and wherein said lockout means comprises a pawl member mounted with respect to said elongated portion; wherein said actuating means urges said pawl into engagement with said camming member when said cam bar adapter is located distally from a proximalmost end of said cartridge and said camming member is in said first position to arrest movement of said camming member.
Claim 9
Dependent Claim
44 words
The surgical apparatus of any one of the preceding claims, wherein said clamp lockout means arrests movement of said means for moving said second jaw means when said cam bar adaptor is located distally of said cam bar adaptor's proximal-most position within said cartridge.
Claim 10
Dependent Claim
56 words
The surgical apparatus of any one of the preceding claims, further comprising an actuating means which comprises a pneumatic system disposed in said frame and including a self contained supply of pressurized gas and a pneumatic actuator mechanism associated with said gas supply, said pneumatic system adapted to actuate said means for ejecting said surgical fasteners.
Claim 11
Dependent Claim
216 words
A surgical apparatus for driving surgical fasteners into body tissue comprising: a) a handle; b) an endoscopic portion defining a longitudinal axis and extending distally from said handle, said endoscopic portion including: i) an elongated housing having a distal portion which comprises means to support a plurality of surgical fasteners for slidable movement generally transverse to said longitudinal axis, said distal portion having a tissue engaging surface for supporting tissue to be fastened, ii) an anvil member having a fastener forming surface and a distal end and a proximal end, said anvil member being mounted with respect to said elongated housing such that at least the distal end of said anvil member is movable in directions generally transverse to said longitudinal axis between an open position spaced from said tissue engaging surface and a closed position wherein said fastener forming surface is in close cooperative alignment with said tissue engaging surface, iii) means for moving said anvil member between said open position and said closed position, iv) means for ejecting said surgical fasteners from said stener support means, whereby said fasteners engage tissue positionable between said tissue engaging surface and said fastener forming surface, and v) lockout means for arresting movement of said means for moving said anvil between said open position and said closed position.
References Cited (Backward Citations)
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