Radio frequency lasso

摘要

A system for resecting tissue includes a loop structure configured for cutting tissue, at least a portion of the loop structure formed by an elongate structure having a first end and a second end, wherein a length of the loop structure is adjustable by positioning the first end relative to the second end, wherein a first portion of the loop structure comprises a first electrode, and a second portion of the loop structure comprises a second electrode. A system for resecting tissue includes a loop structure configured for cutting tissue, the loop structure formed by an elongate structure having a first end and a second end, wherein a length of the loop structure is adjustable by positioning the first end relative to the second end, and a support structure coupled to a portion of the elongate structure and having a surface for contacting tissue.

主权项

1. A system for resecting tissue, comprising:
a loop structure having a cutting portion configured for cutting tissue, at least a portion of the loop structure formed by an elongate structure having a proximal end and a distal end, wherein a length of the loop structure is adjustable by adjusting a position of the proximal end relative to a position of the distal end, wherein a loop is fixedly secured to the distal end of the elongate structure, and wherein a portion of the elongate structure is inserted through the loop; a positioner for automatically reducing the loop size of the loop structure and cutting tissue with the cutting portion, wherein the positioner automatically reduces the loop size in response to a received signal; and wherein a first portion of the loop structure comprises a plurality of electrodes including a first electrode, and a second portion of the loop structure comprises a second electrode.