ENDOSCOPIC TISSUE GRASPING APPARATUS AND METHOD
First Claim
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1. An endoscopic tool for selective tissue grasping and retention, comprising:
- a flexible elongate member including a tubular outer member and an inner member extending through said outer member, wherein said internal member and said outer members are disposed for relative movement therebetween;
a tissue grasper located at a distal end of said elongate member and including a first jaw member and a second jaw member, wherein opposing portions of said first and second jaw members are disposed for relative movement between an open position and a closed position, wherein tissue is graspable between said first and second jaw members in said closed position;
a handle located at a proximal end of said elongate member and including a shaft member and a grip member extending about at least a portion of said shaft member, said shaft member and said grip member being disposed for selective relative movement by user along a handle axis, wherein one of said shaft member and said grip member includes a pawl and the other of said shaft member and said grip member includes a rack comprising a plurality of teeth spaced along said handle axis to define a rachet interface therebetween; and
,wherein first relative movement between said grip member and said shaft member by a user affects first relative movement between said inner member and said outer member of said elongate member and first relative movement between said opposing portions of said first and second jaw members of the tissue grasper from said open position to said closed position, and wherein said rachet interface retains said opposing portions of said first and second jaw members in said closed position.
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Abstract
An improved endoscopic tissue grasping apparatus and method provide for enhanced tissue retention. In one separate aspect, an endoscopic tool may include an improved handle comprising a rachet interface for retaining first and second jaw members at in a closed position at a distal end of the tool. In another separate aspect, a tissue grasper is provided in which opposing first and second jaw members may be effectively locked in a closed position by virtue of an articulating linkage arrangement.
375 Citations
72 Claims
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1. An endoscopic tool for selective tissue grasping and retention, comprising:
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a flexible elongate member including a tubular outer member and an inner member extending through said outer member, wherein said internal member and said outer members are disposed for relative movement therebetween; a tissue grasper located at a distal end of said elongate member and including a first jaw member and a second jaw member, wherein opposing portions of said first and second jaw members are disposed for relative movement between an open position and a closed position, wherein tissue is graspable between said first and second jaw members in said closed position; a handle located at a proximal end of said elongate member and including a shaft member and a grip member extending about at least a portion of said shaft member, said shaft member and said grip member being disposed for selective relative movement by user along a handle axis, wherein one of said shaft member and said grip member includes a pawl and the other of said shaft member and said grip member includes a rack comprising a plurality of teeth spaced along said handle axis to define a rachet interface therebetween; and
,wherein first relative movement between said grip member and said shaft member by a user affects first relative movement between said inner member and said outer member of said elongate member and first relative movement between said opposing portions of said first and second jaw members of the tissue grasper from said open position to said closed position, and wherein said rachet interface retains said opposing portions of said first and second jaw members in said closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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12-63. -63. (canceled)
Specification