Delivery assembly for resilient tissue clamp

摘要

A delivery assembly includes a ring sleeve that fits snugly over a main endoscope on the distal end of the endoscope. An extension tube projects distally away from the ring sleeve and may be made integrally with the sleeve. The extension tube is off-axis from the ring sleeve and endoscope. A tube-like inner carrier is reciprocatingly disposed inside the extension tube. One or more resilient tissue compression rings are placed in a stretched configuration on the inner carrier. To push the rings off the carrier, the carrier is pulled proximally within the extension tube and the compression ring is thus pulled into contact with the distal end of the extension tube. Continued pulling of the carrier causes the compression ring to be pushed off the assembly onto target tissue, at which point the ring is relaxed to assume a small configuration and clamp the target tissue.

主权项

1. A delivery assembly for a tissue compression ring, comprising:
a ring sleeve that fits snugly over a main endoscope over a distal end of the endoscope; an extension tube projecting distally away from the ring sleeve, the extension tube defining a first axis, the ring sleeve defining a second axis, the first and second axes being parallel to each other and not being collinear with each other; an inner carrier reciprocatingly disposed inside the extension tube and configured for carrying one or more resilient tissue compression rings in a stretched configuration on the inner carrier, wherein the inner carrier is configured for attachment to an actuator that can be pulled proximally to move the inner carrier proximally within the extension tube, pulling a compression ring on the inner carrier into contact with a distal end of the extension tube, wherein continued pulling of the inner carrier causes the compression ring to be pushed off the inner carrier onto target tissue, at which point the compression ring is relaxed to assume a small configuration and clamp target tissue.