EP0293123A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical stapling apparatus
Assignee: United States Surgical Corp
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Filing: 1988-05-16
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Granted: —
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Expires: 2008-05-16
Abstract
Abstract The end-to-end anastomosis apparatus is provided with a mounting means (17) which can receive a trocar (33) for making holes in tissue and, subsequently, an anvil shaft (13) for the mounting of an anvil assembly (16) for stapling purposes. The anvil shaft is provided with splines (47) which co-operate with splines (46) on a shell liner (19) within the housing of the apparatus to align the buckets (49) on the anvil assembly with the staples (24) in a cartridge (23) secured in the apparatus. In addition, the anvil assembly is provided with a spring (57) for locking of the anvil housing on the anvil shaft.
Inventors
- 👤 David T. Green
- 👤 Keith Ratcliffe
- 👤 Henry Bolanos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 23:48
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/115; A61B17/1155; A61B17/32; A61B17/3205; A61B17/32053; A61B17/34; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
73 words
A surgical stapler apparatus comprising a tubular housing (17) and a staple pusher assembly (25) movably mounted in a distal end of said housing (17) for movement between a retracted position within said housing (17) and an extended position for expelling an annular array of staples therefrom; characterized in having means mounted within said staple pusher assembly (25) for selectively mounting one of a trocar (33) and an anvil assembly (13, 16) therein.
Claim 2
Dependent Claim
73 words
A surgical stapler apparatus comprising a tubular housing (17) and a staple pusher assembly (25) movably mounted in a distal end of said housing (17) for movement between a retracted position within said housing (17) and an extended position for expelling an annular array of staples therefrom; characterized in having means mounted within said staple pusher assembly (25) for selectively mounting one of a trocar (33) and an anvil assembly (13, 16) therein.
Claim 3
Dependent Claim
61 words
A surgical stapler apparatus as set forth in claim 1 characterized in that said means includes at least one detent (40) mounted for radial movement between a retaining position to hold one of a trocar (33) and an anvil assembly (13, 16) therein and a release position to release said one of a trocar (33) and an anvil assembly (13, 16).
Claim 4
Dependent Claim
29 words
A surgical stapler apparatus as set forth in claim 2 characterized in that said detent (40) is spring biased to move from said release position into said retaining position.
Claim 5
Dependent Claim
120 words
A surgical stapler apparatus as set forth in claim 1 characterized in that said means includes a cylinder (34) slidably mounted in said staple pusher assembly (25) and including a central bore (35) at a distal end to receive a shaft (41′, 13) of one of a trocar (33) and an anvil assembly (13, 16) therein and at least one longitudinally disposed slot (36) in a sidewall communicating with said bore (35), and at least one detent (40) within said bore (35) and aligned with said slot (36) for radial movement between between a restraining position to hold the shaft (41′ 13) in said cylinder (34) and a release position within said slot (36) to release the shaft (41′ 13).
Claim 6
Dependent Claim
29 words
A surgical stapler apparatus as set forth in claim 4 characterized in that said staple pusher assembly (25) includes a cylindrical quill (30) slidably receiving said cylinder (34) therein.
Claim 7
Dependent Claim
66 words
A surgical stapler apparatus as set forth in claim 4 further characterized in having a U-shaped spring (37) having a base (35) mounted within said bore (35) and a pair of arms (39) aligned with said slots (36), each said arm (39) having a detent (40) thereon for engaging in a shaft (41′, 13) of one of a trocar (33) and an anvil assembly (13, 16).
Claim 8
Dependent Claim
95 words
A surgical stapler apparatus as set forth in claim 1 which is further characterized in having a first actuating means (32) connected to said staple pusher assembly (25) for moving said staple pusher assembly (25) at least from said retracted position to said extended position thereof and a second actuating means (43) for moving said first means between a retracted position within said staple pusher assembly (25) and an extended position relative to said staple pusher assembly (25) to permit released of a received one of a trocar (33) and an anvil assembly (13, 16).
Claim 9
Dependent Claim
67 words
A surgical stapler apparatus as set forth in claim 1 characterized in that said staple pusher assembly (25) includes a cylindrical quill (30) receiving said means therein, a pusher (26) secured to said quill (30), an annular array of fingers (28) secured to said pusher (26) for expelling staples from said assembly and an annular blade (29) secured to said pusher (26) concentrically within said fingers (28).
Claim 10
Dependent Claim
89 words
A surgical stapler apparatus comprising a tubular housing (17) and a staple pusher assembly (25) movably mounted in a distal end of said housing (17) for movement between a retracted position within said housing (17) and an extended position for expelling an annular array of staples (24) therefrom characterized in having an anvil assembly (13, 16) having a shaft (13) releaseably mounted within said housing (17) and an anvil (16) mounted on said shaft (13) and facing said staple pusher assembly (25) for clinching of the expelled staples thereon.
Claim 11
Dependent Claim
89 words
A surgical stapler apparatus comprising a tubular housing (17) and a staple pusher assembly (25) movably mounted in a distal end of said housing (17) for movement between a retracted position within said housing (17) and an extended position for expelling an annular array of staples (24) therefrom characterized in having an anvil assembly (13, 16) having a shaft (13) releaseably mounted within said housing (17) and an anvil (16) mounted on said shaft (13) and facing said staple pusher assembly (25) for clinching of the expelled staples thereon.
Claim 12
Dependent Claim
69 words
A surgical stapler apparatus as set forth in claim 9 further characterized in having mounting means (34, 37) movably mounted within said staple pusher assembly (25) for releasably engaging solid shaft (13) and actuating means (43) connected to said mounting means (34, 37) for moving said mounting means (34, 37) between a retracted position within said assembly (25) and an extended position to permit release of said shaft (13).
Claim 13
Dependent Claim
50 words
A surgical stapler apparatus as set forth in claim 10 characterized in that said shaft (13) includes a recess (45) and said mounting means includes at least one detent (40) mounted for radial movement between a retaining position in said recess (45) and a release position outside said recess (15).
Claim 14
Dependent Claim
49 words
A surgical stapler apparatus as set forth in claim 10 further characterized in having an aligning means (46, 47) for aligning said shaft (13) circumferentially within said mounting means to align an annular array of buckets (49) on said anvil with staples (24) in said staple pusher assembly (25).
Claim 15
Dependent Claim
44 words
A surgical stapler apparatus as set forth in claim 12 characterized in that said aligning means includes an annular shell (19) having a plurality of internal circumferentially disposed longitudinal splines (46) and a plurality of external circumferentially disposed longitudinal splines (47) on said shaft.
Claim 16
Dependent Claim
42 words
A surgical stapler apparatus as set forth in claim 13 characterized in that each of said splines (46) of said shell (19) has a chamfered end for engaging and circumferentially guiding said splines (47) of said shaft (13) into a predetermined alignment.
Claim 17
Dependent Claim
26 words
A surgical stapler apparatus as set forth in claim 9 characterized in having a locking means (57) releasably securing said anvil (16) on said shaft (13).
Claim 18
Dependent Claim
105 words
A surgical stapler apparatus as set forth in claim 9 characterized in that said anvil assembly (13, 16) includes a housing (50, 51), a recess (56) in said shaft (13), a spring (57) in said housing (50, 51) at least partially disposed in said recess (56) to lock said housing on said shaft and a latch (59) movably mounted in said housing (50, 51) and abutting said spring (57) to bias said spring (57) out of said recess (56) in response to movement of said latch (59) to a release position to permit sliding of said anvil assembly housing (50, 51) off said shaft (13).
Claim 19
Dependent Claim
51 words
An anvil assembly for a stapler characterized in having a shaft (13), and anvil (16) slidably mounted on said shaft (13) at one end and having an annular array of buckets (49) on one end face thereof; and a locking means (57) releasably securing said anvil (13) on said shaft (13).
Claim 20
Dependent Claim
51 words
An anvil assembly for a stapler characterized in having a shaft (13), and anvil (16) slidably mounted on said shaft (13) at one end and having an annular array of buckets (49) on one end face thereof; and a locking means (57) releasably securing said anvil (13) on said shaft (13).
Claim 21
Dependent Claim
108 words
An anvil assembly as set forth in claim 17 characterized in that said anvil (16) includes a housing (50, 51) and said locking means includes a recess (56) in said shaft (13), a spring (57) in said housing (50, 51) at least partially disposed in said recess (56) to lock said housing (50, 51) on said shaft (13) and a latch (59) movably mounted in said housing (50, 51) and abutting said spring (57) to bias said spring (57) out of said recess (56) in response to movement of said latch (59) to a release position to permit sliding of said housing (50, 51) off said shaft (13).
Claim 22
Dependent Claim
62 words
An anvil assembly as set forth in claim 18 characterized in having a plurality of external splines (47) on said shaft (13) and a plurality of internal splines (53) on said housing (50, 51) for mating engagement with each other for aligning said housing on said shaft (13) to position said array of buckets (49) in one of a plurality of positions.
Claim 23
Dependent Claim
76 words
An anvil assembly as set forth in claim 19 characterized in that said recess (56) is an annular recess and said spring (57) is of U-shape with a pair of legs (58) disposed in said recess (56) on opposite sides thereof and wherein said latch (59) abuts centrally of said legs (58) to spread said legs (58) out of said recess (56) to permit release of said anvil assembly housing (50, 51) from said shaft (13).
References Cited (Backward Citations)
No citation records indexed.
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