EP0040683A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical stapling instrument
Assignee: Wyeth Holdings LLC
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Filing: 1981-03-25
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Granted: —
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Expires: 2001-03-25
Abstract
Abstract A surgical stapling instrument comprising a handle (1) and a trigger (2) pivotally attached and on compression internal to the handle has been invented. The forward portion of the handle contains: a track (10); a plurality of staples (12) loaded and staple advancing means carried on the track (10); a track cover (3) mounted onto the track (10); and an anvil surface (9) mounted and a first bias means movably mounted on the cover (3). The anvil surface (9) terminates in a perpendicular flange. The forwardmost staple is adjacent the anvil surface. A retainer spring (15) mounted on the anvil surface or a leaf spring on the track supports the staple and separates it from the perpendicular flange. The staple is formed on the flange. The forward portion of the handle also contains a guide block (4) which is mounted on the track cover (3) adjacent the anvil surface (9). A forming blade (5) and a second bias means (6) are movably mounted on the guide block (4). The forming blade (5) and the trigger (2) have coordinating surfaces. A surgical stapling control means has also been invented. The control means comprise a mult-toothed ratchet on the rearward portion of the trigger (2); at least one guide pin (2b) attached to the initial end of the ratchet; a nonpivoting pawl attached to the rearward portion of the handle to coordinate with the ratchet; and guide means adjacent the rearward portion of the handle to coordinate with and provide tension to the guide pins (2b). Alternatively, the control means comprise a multi-toothed ratchet on the rearward portion of the trigger to coordinate with the ratchet; at least one guide pin (2b) attached to the initial end of the pawl, and guide means adjacent the rearward portion of the handle to coordinate with and provide tension to the guide pin.
Inventors
- 👤 Jay E. Campbell
- 👤 Richard H. Reichmann
- 👤 Lehmann K. Li
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 04:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/068; A61B17/0682; A61B17/0684; A61B17/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
215 words
A surgical stapling instrument comprising a handle; a trigger pivotally attached and on compression internal to said handle, the forward portion of said handle containing: a track; a plurality of staples loaded and staple advancing means carried on said track; a track cover mounted on said track; an anvil surface mounted and a first bias means movably mounted on the cover, the said anvil surface terminating in a perpendicular flange. a staple adjacent said anvil surface; a retainer spring mounted on said anvil surface and separating said staple from said flange; a guide block mounted on said cover adjacent said anvil surface; and a forming blade and a second bias means movably mounted on said guide block, said forming blade and said trigger having coordinating surfaces such that on compressing said trigger into said handle, said forming blade pushes said staple downward, said staple displaces said retainer spring, said staple forms on said flange and said retainer spring moves back to its initial position; and on releasing said trigger and advancing said instrument said formed staple is separated from said flange, said second bias means returns said trigger and said forming blade to their initial positions, and said first bias means activates said staple advancing means to place the forwardmost staple adjacent said anvil surface.
Claim 2
Dependent Claim
215 words
A surgical stapling instrument comprising a handle; a trigger pivotally attached and on compression internal to said handle, the forward portion of said handle containing: a track; a plurality of staples loaded and staple advancing means carried on said track; a track cover mounted on said track; an anvil surface mounted and a first bias means movably mounted on the cover, the said anvil surface terminating in a perpendicular flange. a staple adjacent said anvil surface; a retainer spring mounted on said anvil surface and separating said staple from said flange; a guide block mounted on said cover adjacent said anvil surface; and a forming blade and a second bias means movably mounted on said guide block, said forming blade and said trigger having coordinating surfaces such that on compressing said trigger into said handle, said forming blade pushes said staple downward, said staple displaces said retainer spring, said staple forms on said flange and said retainer spring moves back to its initial position; and on releasing said trigger and advancing said instrument said formed staple is separated from said flange, said second bias means returns said trigger and said forming blade to their initial positions, and said first bias means activates said staple advancing means to place the forwardmost staple adjacent said anvil surface.
Claim 3
Dependent Claim
217 words
A surgical stapling instrument comprising a handle; a trigger pivotally attached and on compression internal to said handle, the forward portion of said handle containing: a track; a leaf spring on the terminal end of said track; a plurality of staples loaded and staple advancing means carried on siad track; a track cover mounted on said track; an anvil surface mounted and a first bias means movably mounted on the cover, the said anvil surface terminating in a perpendicular flange; a staple adjacent said anvil surface separated from said flange by said leaf spring; a guide block mounted on said cover adjacent said anvil surface; and a forming blade and a second bias means movably mounted on said guide block, said forming blade and said trigger having coordinating surfaces such that on compressing said trigger into said handle, said forming blade pushes said staple downward, said staple displaces said leaf spring, said leaf spring moves back to its initial position and said staple forms on said flange; and on releasing said trigger and advancing siad instrument said formed staple is separated from said flange, said second bias means returns said trigger and said forming blade to their initial positions,and said first bias means activates said staple advancing means to place the forwardmost staple adjacent said anvil surface.
Claim 4
Dependent Claim
217 words
A surgical stapling instrument comprising a handle; a trigger pivotally attached and on compression internal to said handle, the forward portion of said handle containing: a track; a leaf spring on the terminal end of said track; a plurality of staples loaded and staple advancing means carried on siad track; a track cover mounted on said track; an anvil surface mounted and a first bias means movably mounted on the cover, the said anvil surface terminating in a perpendicular flange; a staple adjacent said anvil surface separated from said flange by said leaf spring; a guide block mounted on said cover adjacent said anvil surface; and a forming blade and a second bias means movably mounted on said guide block, said forming blade and said trigger having coordinating surfaces such that on compressing said trigger into said handle, said forming blade pushes said staple downward, said staple displaces said leaf spring, said leaf spring moves back to its initial position and said staple forms on said flange; and on releasing said trigger and advancing siad instrument said formed staple is separated from said flange, said second bias means returns said trigger and said forming blade to their initial positions,and said first bias means activates said staple advancing means to place the forwardmost staple adjacent said anvil surface.
Claim 5
Dependent Claim
136 words
A surgical stapling control means comprising: a handle; a trigger pivotally attached and on compression internal to said handle; a staple forming means contained in the forward portion of said handle; a multi-toothed ratchet on the rearward portion of said trigger; at least one guide pin attached to the initial end of said ratchet; a nonpivoting pawl attached to the rearward portion of said handle to coordinate with said ratchet; guide means adjacent the rearward portion of said handle to coordinate with and provide tension to said guide pin such that on partially compressing said trigger said guide means provide tension on said guide pin and said ratchet engages said pawl and on completely compressing said trigger, said guide pin crossesover the top of said guide means causing said ratchet to be disengaged from said pawl.
Claim 6
Dependent Claim
136 words
A surgical stapling control means comprising: a handle; a trigger pivotally attached and on compression internal to said handle; a staple forming means contained in the forward portion of said handle; a multi-toothed ratchet on the rearward portion of said trigger; at least one guide pin attached to the initial end of said ratchet; a nonpivoting pawl attached to the rearward portion of said handle to coordinate with said ratchet; guide means adjacent the rearward portion of said handle to coordinate with and provide tension to said guide pin such that on partially compressing said trigger said guide means provide tension on said guide pin and said ratchet engages said pawl and on completely compressing said trigger, said guide pin crossesover the top of said guide means causing said ratchet to be disengaged from said pawl.
Claim 7
Dependent Claim
136 words
A surgical stapling control means comprising: a handle; a trigger pivotally attached and on compression internal to said handle; a staple forming means contained in the forward portion of said handle; a multi-toothed ratchet on the rearward portion of said handle; a pawl attached to the rearward portion of said trigger to coordinate with said ratchet; at least one guide pin attached to the initial end of said pawl; guide means adjacent the rearward portion of said handle to coordinate with and provide tension to said guide pin such that on partially compressing said trigger said guide means provide tension on said guide pin and said ratchet engages said pawl and on completely compressing said trigger, said guide pin crosses over the top of said guide means causing said ratchet to be disengaged from said pawl.
Claim 8
Dependent Claim
136 words
A surgical stapling control means comprising: a handle; a trigger pivotally attached and on compression internal to said handle; a staple forming means contained in the forward portion of said handle; a multi-toothed ratchet on the rearward portion of said handle; a pawl attached to the rearward portion of said trigger to coordinate with said ratchet; at least one guide pin attached to the initial end of said pawl; guide means adjacent the rearward portion of said handle to coordinate with and provide tension to said guide pin such that on partially compressing said trigger said guide means provide tension on said guide pin and said ratchet engages said pawl and on completely compressing said trigger, said guide pin crosses over the top of said guide means causing said ratchet to be disengaged from said pawl.
Claim 9
Dependent Claim
23 words
A stapling control means of Claim 3 or 4 wherein said guide means are two cams attached to each side of said handle.
Claim 10
Dependent Claim
15 words
A stapling control means of Claim 5 wherein two guide pins coordinate with said cams.
Claim 11
Dependent Claim
114 words
A stapling control means of Claim 6 wherein said staple forming means is: a track; a plurality of staples loaded and staple advancing means carried on said track; a track cover mounted on said track; an anvil surface mounted and a first bias means movably mounted on the cover, the said anvil surface terminating in a perpendicular flange; a staple adjacent said anvil surface; a retainer spring mounted on said anvil surface and separating said staple from said flange; a guide block mounted on said cover adjacent said anvil surface; and a forming blade and a second bias means movably mounted on said guide means, said forming blade and said trigger having coordinating surfaces.
Claim 12
Dependent Claim
117 words
A stapling control means of Claim 6 wherein said staple forming means is: a track; a leaf spring on the terminal end of said track; a plurality of staples loaded and staple advancing means carried on said track; a track cover mounted on said track; an anvil surface mounted and a first bias means movably mounted on the cover, the said anvil surface terminating in a perpendicular flange; a staple adjacent said anvil surface separated from said flange by said leaf spring; a guide block mounted on said cover adjacent said anvil surface; and a forming blade and a second bias means movably mounted on said guide block, said forming blade and said trigger having coordinating surfaces.
Claim 13
Dependent Claim
63 words
A stapling instrument of Claim 1 or 2 or 7 or 8 containing an indicator having an initial end visible in said handle and a terminal end movably mounted on said advancing means such that on releasing said trigger, said first bias means pulls the terminal end and thus moves the initial end of said indicator to indicate the number of staples remaining.
References Cited (Backward Citations)
No citation records indexed.
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