EP0503662B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Approximating apparatus for surgical jaw structure
Assignee: United States Surgical Corp
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Filing: 1992-03-13
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Granted: 1997-06-04
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Expires: 2012-03-13
Abstract
No abstract record available.
Inventors
- 👤 David T. Green
- 👤 Jeffrey J. Blewett
- 👤 Henry Bolanos
- 👤 Keith Ratcliff
- 👤 Frank J. Viola
- 👤 Charles R. Sherts
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 18:07
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/29; A61B17/30; A61B17/2909; A61B2017/2926; A61B2017/2932; A61B2017/2933; A61B2017/2936; A61B2017/2944
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
214 words
Apparatus for approximating jaw structure of surgical instrumentation which has a longitudinal axis, the apparatus comprising: first elongate jaw structure (22) having a distal working end and proximal end, second elongate jaw structure (28) disposed in spaced relation to and connected with said first jaw structure, said second jaw structure having a distal working end for substantially parallel working interaction with said first jaw structure and a proximal end, said first and second jaw structure being interconnected for substantially parallel approximation; and approximating means (56, 144) having structure for relative movement between said first and second jaw structure in substantially parallel relation with respect to one another to permit working interaction between said distal working ends of said first and second jaw structure: characterised in that : the apparatus is suitable for endoscopic or laparoscopic procedures, having a proximal end at which the apparatus is manipulated and a distal end (24) where the approximating jaw structure is located and orientated with the length of each jaw structure arranged parallel to the said longitudinal axis; and camming structure (40, 44), located at the distal end of the apparatus, for camming the relative movement between said first and second jaw structure in said substantially parallel relation, the camming structure comprising spaced parallel camming surfaces (52, 54).
Claim 2
Dependent Claim
147 words
Apparatus as claimed in claim 1 wherein said approximating means comprises: a frame means (30); a camming plate (50) axially slidable within said frame means, said camming plate having a first and second camming slot (52, 54) formed therein; a first camming pin (40) disposed in said first camming slot and transversely mounted in the proximal end of said second jaw structure, said first camming pin engaging transverse slots in said frame means (30) to restrict axial movement of said distal working end of said second jaw structure; a second camming pin (44) disposed in said second camming slot (54) and transversely mounted parallel to said first camming pin in the proximal end of said second jaw structure such that axial movement of said camming plate relative to said frame means caused substantially parallel approximation of said distal working ends of said first and second jaw structure.
Claim 3
Dependent Claim
55 words
Apparatus as claimed in claim 2 wherein at least one (54) of said camming slots includes a substantially axially aligned portion such that when said camming pin is disposed in said substantially axially aligned portion, said distal working ends of said first and second jaw structure move into non-parallel alignment to facilitate capture of tissue.
Claim 4
Dependent Claim
26 words
Apparatus as claimed in claim 2 or 3 further comprising actuating means (56) axially disposed in said frame means for driving said camming plate axially therein.
Claim 5
Dependent Claim
42 words
Apparatus as claimed in claim 2, 3 or 4 further comprising a spring (60) loaded actuating means (56) for axially moving said camming plate to open said distal working ends of said first and second jaw structure in a substantially parallel manner.
Claim 6
Dependent Claim
123 words
Apparatus as claimed in any one of the preceding claims, wherein: said first jaw structure (120) has a substantially channel shaped proximal end (122); said second jaw structure (128) has a proximal end at least partially disposed within said channel shaped proximal end of said first jaw structure for substantially parallel approximation of said working ends, said second jaw structure including at least one camming surface (132, 134) thereon, guide means (136, 138) interconnecting the proximal ends of said first and second jaw structure to permit substantial parallel approximation thereof, and the approximating means engages said at least one camming surface (132, 134) on said second jaw structure to cause said first and second jaw structure to approximate in a substantially parallel orientation.
Claim 7
Dependent Claim
33 words
Apparatus as claimed in claim 6 further comprising biasing means (150) for maintaining a substantially separate parallel orientation of said working ends of said first and second jaw structure in an open position.
Claim 8
Dependent Claim
46 words
Apparatus as claimed in claim 6 or 7 wherein said guide means (136, 138) comprises at least one transverse pin mounted in said proximal end of said second jaw structure which pin rides in vertical slots formed in the proximal end of said first jaw structure.
Claim 9
Dependent Claim
97 words
Apparatus as claimed in claim 6, 7 or 8 wherein said second jaw structure is provided with at least a pair of axially aligned camming surfaces disposed in said proximal end and said approximating means comprises a camming tube (144) surrounding the proximal ends of said first and second jaw structure and having a pair of camming elements (146, 148) for engaging the axially aligned camming surfaces (132, 134) on said second jaw structure to effect substantially parallel approximation of the working ends of said first and second jaw structure upon axial movement of said camming tube.
Claim 10
Dependent Claim
88 words
Apparatus as claimed in claim 9 wherein said camming surfaces disposed in said proximal end of said second jaw structure comprises two pairs of ramped slots (140, 142) formed in opposing transverse sides of said proximal end of said second jaw structure and said camming tube includes two pairs of pins (182, 184) fixed in said tube and engageable with said pairs of ramped slots to effect substantially parallel approximation of the working ends of said first and second jaw structure upon axial movement of said camming tube.
Claim 11
Dependent Claim
67 words
Apparatus as claimed in claim 9 or 10 further comprising: a frame means for engaging at least the proximal end of said first and second jaw structure; and actuating means (154) disposed in said frame means and engageable with said camming tube (144) for effecting axial movement thereof to cause said working ends of said first and second jaw means to approximate in a substantially parallel orientation.
Claim 12
Dependent Claim
46 words
Apparatus as claimed in any one of claims 1 to 8 wherein said actuating means includes a shaft (56) axially disposed in said frame means and spring (60) loaded to maintain said working ends of said first and second jaw means in a closed approximated position.
Claim 13
Dependent Claim
190 words
Apparatus as claimed in claim 2 or any one of claims 3 to 12 as dependent on claim 2, and comprising: frame means; and endoscopic means (26) defining a longitudinal axis and extending distally from said frame means, said endoscopic means comprising: said first jaw structure (22); and said second jaw structure (28), said approximating means (144) having said camming plate (50) axially slidable within said endoscopic means, said camming plate having said first and second camming slot (52, 54) formed therein; the first camming pin (40) being disposed in said first camming slot and transversely mounted in the proximal end of said second jaw structure; said first camming pin engaging transverse slots in said endoscopic means to restrict axial movement of said distal working end of said second jaw structure; and the second camming pin disposed in said second camming slot and transversely mounted parallel to said first camming pin in the proximal end of the said second jaw structure such that axial movement of said camming plate relative to said endoscopic means caused substantially parallel approximation of said distal working ends of said first and second jaw structure.
Claim 14
Dependent Claim
54 words
Apparatus as claimed in claim 13, wherein at least one of said camming slots includes a substantially axially aligned portion such that when said camming pin is disposed in said substantially axially aligned portion, said distal working ends of said first and second jaw structure move into non-parallel alignment to facilitate capture of tissue.
Claim 15
Dependent Claim
45 words
Apparatus as claimed in claim 13 or 14 and including supplemental approximation assist means (59) disposed in said apparatus to operate in conjunction with said approximating means to effect substantially parallel working interaction between the distal working ends of said first and second jaw structure.
Claim 16
Dependent Claim
45 words
Apparatus as claimed in claim 15 wherein said supplemental approximation assist means comprises: a secondary compression spring (61) for engaging at least one of said surgical jaw structures to assist the approximating means to effect parallel working interaction between tissue measuring structure of said jaws.
Claim 17
Dependent Claim
64 words
Apparatus as claimed in claim 16, wherein said supplemental approximation assist means further comprises a fork (65), said fork and said secondary compression spring being disposed in said camming plate such that said fork is engageable with the proximal end of at least one of said surgical jaw structures to assist the approximating means to effect parallel working interaction between said tissue measuring structure.
Claim 18
Dependent Claim
26 words
Apparatus as claimed in any one of the preceding claims wherein said working ends of said first and second jaw structure collectively comprise surgical cutting jaws.
Claim 19
Dependent Claim
44 words
Apparatus as claimed in any one of claims 1 to 17 wherein said first jaw structure includes a staple cartridge (126) portion having a plurality of staples disposed therein and said second jaw structure comprises anvil structure (130) having a staple forming surface thereon.
References Cited (Backward Citations)
US4607636A
Cited
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