Self-cinching surgical clips and delivery system

摘要

A device and method for deploying self-cinching surgical clips. The device accesses at least two layers of tissue or material from only one side of the tissue or material and punctures through the two layers of tissue or material. The various configurations of clips disclosed herein are made of a superelastic material such as Nitinol, and have a constrained and a relaxed state, and no sharp edges or tips so as to reduce tissue irritation following deployment. The clip is disposed within the housing of the delivery device and held in a constrained state by a tube assembly until deployment wherein the clip assumes its relaxed state, where the ends of the clip are brought into close approximation, thereby securing the layers of tissue or material together.

主权项

1. A multiple surgical clip deploying system, comprising:
a housing having a channel oriented in a proximal/distal direction; a plurality of self-cinching clips each made of a super-elastic material having a relaxed configuration and a constrained configuration; a cartridge including a plurality of chambers each sized to hold one of the self-cinching clips in its constrained configuration, the entire cartridge being movable along the housing channel between a distal position and a proximal position, and the cartridge having a proximal portion movable relative to a distal portion; an inner needle having a sharpened end configured to puncture biological tissue and/or synthetic materials and having a lumen sized to receive one of the clips, the inner needle being fixedly connected to the distal portion of the cartridge and extending in a distal direction; and a pusher handle arranged to be held at a proximal end of the housing channel and having a pusher shaft extending therefrom sized to fit through a first cartridge chamber and through the inner needle lumen when the cartridge is in its proximal position, the pusher handle and shaft being removable from the cartridge chamber to permit the movable portion of the cartridge to be repositioned to align a second cartridge chamber with the inner needle.