Invaginator for gastroesophageal flap valve restoration device
View Patent ↗An assembly for restoring a gastroesophageal flap valve includes a restoration device substantially free for rotation. The assembly comprises an elongated member configured to be fed through a throat, down an adjoining esophagus and into an associated stomach. The elongated member has a distal end. The assembly further comprises a gastroesophageal flap valve restoration device carried on the distal end of the elongated member for placement in the stomach, and an invaginator carried by the elongated member. The invaginator is configured to grip the esophagus and the elongated member and invaginator are coupled for restricted relative axial movement and substantially free relative rotational movement.
1. A device for creating a fold of stomach tissue, comprising:
a longitudinal member;
an invaginator rotably mounted on the longitudinal member and having a plurality of orifices for drawing a vacuum therethrough, the invaginator configured for rotational movement relative to the elongated member, with limited axial movement;
a tissue shaper coupled to the longitudinal member, the tissue shaper including a chassis and a bail, the chassis extending from the longitudinal member, the chassis and bail having a hinged connection therebetween; and
a tissue gripper configured to draw tissue between the chassis and bail, wherein the tissue gripper is a helical coil disposed on the distal end of a flexible cable, the tissue gripper being guided into position by a guide structure, the guide structure having a tubular wall and a slit extending through the tubular wall to permit the tissue gripper to pull through the slit and release from the bail after tissue is gripped wherein the slit has a circuitous configuration so that the cable is confined in the guide structure until release of the cable after tissue is acquired, the guide structure being carried on the bail so that rotational movement of the bail changes the orientation of the guide structure relative to the chassis.
2. The device of claim 1 wherein:
the tissue shaper is formed with the bail having a proximal end and a distal end, the chassis also having a proximal end and a distal end, the proximal end of the bail being coupled to the distal end of the chassis.
3. The device of claim 2 , wherein:
the tissue gripper extends distally beyond the distal end of the bail when gripping the stomach tissue.