Surgical jaw assembly with increased mechanical advantage
AssigneeInscope Development, LLC
InventorMichael Sean McBrayer
Life of this patent
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Abstract
A flexible clip applier includes a ratchet mechanism adapted to locate a clip pusher to a known location after deployment of a distalmost clip. In addition, the clip applier includes a flexible housing into which a train of clips may be chambered. The flexible housing is constrained from elongation when subject to tensile forces. In accord with another aspect of the invention, the jaw assembly is adapted to have relatively high mechanical leverage which facilitates tissue compression prior to application of a clip.
Claims19
A jaw assembly, comprising:
- a) a clevis having proximal and distal portions, said distal portion defining a pivot axis;
- b) a first jaw coupled to said clevis;
- and
- c) a second jaw having a proximal tang and being rotatably coupled to said clevis about said pivot axis,
- wherein said first and second jaws define a first outer diameter of said jaw assembly, and said second jaw defines a second outer diameter at a location through which said pivot axis extends larger than said first outer diameter.
A jaw assembly, comprising:
- a) a tubular member having proximal and distal ends;
- b) jaw assembly coupled to said distal end, said jaw assembly including
- i) a clevis having proximal and distal portions, said distal portion defining a pivot axis,
- ii) a first jaw coupled to said clevis, and
- iii) a second jaw having a proximal tang and being rotatably coupled to said clevis about said pivot axis,
- wherein said first and second jaws define a first outer diameter of said jaw assembly, and said second jaw defines a second outer diameter at a location through which said pivot axis extends larger than said first outer diameter;
- and
- c) actuation means for moving said second jaw relative to said first jaw.
An endoscopic surgical device, comprising:
- a) a tubular member having proximal and distal ends;
- b) jaw assembly coupled to said distal end, said jaw assembly including
- i) a clevis having proximal and distal portions,
- ii) a first jaw having proximal and distal portions, and
- iii) a second jaw having proximal and distal portions, said proximal portion of said second jaw defining a pivot axis about which said second jaw is rotatable relative to said first jaw on said clevis,
- wherein said proximal portions of said first and second jaws define a circumferential ridge about said jaw assembly extending radially beyond said distal portions of said first and second jaws;
- and
- c) actuation means for moving said second jaw relative to said first jaw.
An endoscopic assembly, comprising:
- a) an endoscope having a working channel with a first diameter;
- and
- b) an endoscopic instrument extending at least partially within said working channel, said endoscopic instrument including a distal end effector assembly provided with a ridge about its circumference thereby defining ridged and non-ridged portions of said end effector assembly, wherein said ridged portion approximates said first diameter and said non-ridged portion has a second diameter less than said first diameter.
Dependencies are inferred from the claim text.