| 主权项 |
1. An instrument comprising:
a handle having a handle distal end and a handle proximal end; a single housing tube having a housing tube distal end and a housing tube proximal end; a first housing tube portion of the housing tube, the first housing tube portion having a first stiffness; a second housing tube portion of the housing tube, the second housing tube portion having a second stiffness wherein the second stiffness is greater than the first stiffness; an actuation structure of the handle having an actuation structure distal end and an actuation structure proximal end wherein the actuation structure distal end is disposed between the handle distal end and the handle proximal end and wherein the actuation structure proximal end is disposed between the handle distal end and the handle proximal end; a plurality of actuation arms of the actuation structure, each actuation arm of the plurality of actuation arms having at least one extension mechanism; an actuation ring having an actuation ring distal end and an actuation ring proximal end wherein the actuation ring proximal end is fixed to the actuation structure distal end and wherein the actuation ring distal end is the handle distal end; an optic fiber having an optic fiber distal end and an optic fiber proximal end, the optic fiber disposed in the housing tube and the handle wherein the optic fiber distal end is adjacent to the housing tube distal end, a first portion of the optic fiber is adjacent to the first housing tube portion, and a second portion of the optic fiber is fixed to an inner portion of the housing tube; and a wire having a wire distal end and a wire proximal end, the wire disposed in the housing tube and the handle wherein the wire proximal end is fixed in a position relative to the handle and wherein the wire distal end is adjacent to the housing tube distal end, a first portion of the wire is adjacent to the first housing tube portion, and a second portion of the wire is fixed to the inner portion of the housing tube. |
