Surgical tool having a distal ratchet mechanism
First Claim
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1. A surgical tool, comprising:
- a) a proximal handle assembly;
b) a distal end effector assembly;
c) an elongate flexible first tubular member situated between said handle assembly and said end effector assembly;
d) an advanceable element extending through said first tubular member and having a proximal end and a distal end, said proximal end coupled to said handle assembly, wherein said handle assembly can longitudinally move said advanceable element relative to said first tubular member; and
e) a ratchet element located distal said handle assembly near said distal end effector assembly, said ratchet element interacting with said advanceable element to limit movement of said advanceable element.
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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.
100 Citations
42 Claims
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1. A surgical tool, comprising:
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a) a proximal handle assembly;
b) a distal end effector assembly;
c) an elongate flexible first tubular member situated between said handle assembly and said end effector assembly;
d) an advanceable element extending through said first tubular member and having a proximal end and a distal end, said proximal end coupled to said handle assembly, wherein said handle assembly can longitudinally move said advanceable element relative to said first tubular member; and
e) a ratchet element located distal said handle assembly near said distal end effector assembly, said ratchet element interacting with said advanceable element to limit movement of said advanceable element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A flexible surgical clip applier, comprising:
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a) a proximal handle assembly;
b) a distal jaw assembly;
c) an elongate flexible first tubular member having proximal and distal ends and situated between said handle assembly and said end effector assembly;
d) at least one control element extending through said first tubular member and having proximal and distal ends, said proximal end coupled to said handle assembly and said distal end coupled to said jaw assembly, wherein a first actuation of said handle assembly moves said jaw assembly between open and closed positions;
e) an advanceable element extending through said first tubular member and having proximal and distal ends, said proximal end coupled to said handle assembly, wherein a second actuation of said handle assembly longitudinally moves said advanceable element relative to said first tubular member;
f) a clip pusher coupled to said distal end of said advanceable element; and
g) a ratchet element located distal said handle assembly and near said distal end effector assembly which, after advancement of said advanceable element relative to said first tubular member, limits retraction of said advanceable element. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A flexible clip applier device, comprising:
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a) a proximal handle assembly;
b) an end effector assembly;
c) an elongate flexible first tubular member having proximal and distal ends, said proximal end coupled to said handle assembly;
d) a flexible second tubular member having proximal and distal ends, said distal end coupled to said end effector assembly;
e) a mount coupled to said distal end of said first tubular member and said proximal end of said second tubular member;
f) at least one control element extending through said first and second tubular members and having proximal and distal ends, said proximal end coupled to said handle assembly and said distal end coupled to said jaw assembly, wherein a first actuation of said handle assembly operates said end effector assembly; and
g) an advanceable element extending through said first tubular member and into said second tubular member and having proximal and distal ends, said proximal end coupled to said handle assembly, wherein a second actuation of said handle assembly longitudinally moves said advanceable element relative to said first tubular member. - View Dependent Claims (38, 39, 40, 41, 42)
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Specification