Attachment device for tissue approximation and retraction

摘要

An attachment system for tissue apposition or manipulation and a method of attaching a suture to a tissue for apposition or manipulation of the tissue are provided. The system includes an attachment device including a body having a proximal portion and a distal portion. The attachment device further includes a tissue attachment portion operably connected to the distal portion wherein the tissue attachment portion has a shape that is maintained throughout a tissue apposition procedure. The attachment device also includes a suture operably connected to the body and having an unconnected proximal end and a retaining structure at the proximal portion of the body. The retaining structure configured to releasably mate with a complementary retaining structure on a stylet.

主权项

1. A method of attaching a suture to a tissue for apposition or manipulation of the tissue, the method comprising:
forming a releasable connection between a stylet having a retaining portion and an attachment device having a complementary retaining portion; positioning an inner catheter over the connection to hold the stylet and the attachment device together at the retaining portions; positioning a first tissue attachment portion of the attachment device at a first tissue site; rotating the stylet in an insertion direction to insert a distal tip of the tissue attachment portion into a tissue with the inner catheter positioned over the connection, the tissue attachment portion retaining its shape throughout the insertion; proximally withdrawing the inner catheter proximal to the connection to release the stylet from the attachment device; withdrawing the stylet and the attachment device remains with at least a portion of the attachment device positioned in the tissue; inserting a second tissue attachment portion at a second tissue site; approximating the first tissue site to the second tissue site to close a perforation by pulling on a first suture of the first attachment device and a second suture of a second attachment device.