Methods and devices for excision of tissue

摘要

Various apparatus and methods for excising tissue are described therein. In certain variations, a method of excising a target tissue mass from a subject, may include advancing an elongate instrument having an opening at its distal end into a subject. A cutting element, e.g., a snare or loop, may be advanced from the distal end of the elongate instrument, wherein the cutting element may be configured to cut tissue. The cutting element may be positioned near the target tissue mass. The cutting element may be actuated, e.g., expanded or deployed, and may perform energy based or mechanical cutting of a section of tissue encapsulating the target tissue mass. The cut section of tissue and the target tissue mass encapsulated therein may be removed from the subject.

主权项

1. A method of excising a target tissue mass from a subject, the method comprising:
advancing an elongate instrument having an opening at its distal end through the airways of a lung of the subject, wherein a proximal section of the elongate instrument is flexible; advancing a snare from the distal end of the elongate instrument, wherein the snare is configured to cut tissue; positioning the snare near the target tissue mass, wherein the snare is positioned in healthy tissue adjacent the target tissue mass; actuating the snare to cut a section of healthy tissue encapsulating the target tissue mass, wherein the snare is expanded and rotated thereby cutting around the target tissue mass and collapsed to complete the cut, thereby creating a cut section of healthy tissue which fully encases the target tissue mass; applying suction to remove air from the cut section of healthy tissue sufficiently causing compression of the cut section of healthy tissue; and securing the cut section of tissue and the target tissue mass encapsulated therein with the snare and removing the cut section from the subject.