Endoscopic tissue apposition device and method of use

摘要

An endoscopic tissue apposition device that includes a vacuum chamber configured to securely hold a portion of tissue therein, the vacuum chamber being defined by a proximal wall and a distal wall opposite to the proximal wall. Working and vacuum channels are provided in communication with the vacuum chamber. A portion of tissue may be held in the vacuum chamber when vacuum is applied in the vacuum chamber through the vacuum channel. A carrier needle is disposed on a proximal side of the vacuum chamber and is longitudinally advanceable into and across the vacuum chamber, while a punch needle is disposed on a distal side of the vacuum chamber and is configured to receive the carrier needle therein. A hold and release mechanism holds and releases the punch needle to facilitate joining portions of tissue together.

主权项

1. An endoscopic tissue apposition device, comprising:
a device body having a first end portion and a second end portion; a vacuum chamber within the device body for receiving tissue drawn therein with a vacuum, the vacuum chamber being located between the first end portion and the second end portion; a carrier needle retractable within the first end portion of the device body and traversable across the vacuum chamber to the second end portion of the device body, the carrier needle including a beveled tip; a punch needle engageable with the second end portion of the device body, wherein the punch needle is configured to receive the carrier needle; and a hold and release mechanism configured to intermittently retain the punch needle in the second end portion of the device body, the hold and release mechanism including a holding channel and a release channel, the holding channel configured to releasably hold the punch needle therein, the release channel including a holding mechanism therein, the holding mechanism including a key having a pivot end, a slotted member having a vertically extending slot configured to slidably receive the pivot end of the key therein, and a biasing member, wherein a suture is attachable to the punch needle, and wherein the punch needle with the attached suture is traversable across the vacuum chamber upon the carrier needle being received within the punch needle.