초록 ▼

A method and system for performing anastomosis uses an anvil to control and support a tissue site during an anastomosis procedure involving tissue bonding techniques such as tissue welding and adhesive tissue bonding. The anvil is particularly useful for supporting a wall of a coronary artery during

A method and system for performing anastomosis uses an anvil to control and support a tissue site during an anastomosis procedure involving tissue bonding techniques such as tissue welding and adhesive tissue bonding. The anvil is particularly useful for supporting a wall of a coronary artery during attachment of a graft vessel in a coronary artery bypass graft procedure. The anvil is inserted into a pressurized or unpressurized target vessel and is pulled against an inner wall of the target vessel causing tenting of the thin tissue of the vessel wall. A graft vessel is then advanced to the anastomosis site and an end of the graft vessel is positioned adjacent an exterior of the target vessel. When tissue welding is used, a graft vessel fixture is positioned over the tissue surfaces to be welded in order to clamp the graft and target vessel tissue together. The tissue contacting surfaces of the anvil and/or graft vessel fixture are provided with one or more energy applying surfaces. Energy in the form of RF power, laser energy or ultrasonic energy is then applied to the compressed graft and target vessel tissue to weld the vessels together. When adhesive bonding is used, the adhesive may be applied to mating surfaces of the graft and/or target vessels either before or after the vessels are brought into contact. After tissue bonding is complete, an incision is formed in the wall of the target vessel to allow blood flow between the target vessel and the graft vessel. The incision may be made with an electro-cautery cutting device.

대표청구항 ▼

1. A method of performing anastomosis comprising steps of:providing an anastomosis system comprising an elongated anvil and a graft vessel fixture movable with respect to said anvil, said graft vessel fixture comprising clamping members each having one or more clamping surfaces adapted to compress t

1. A method of performing anastomosis comprising steps of:providing an anastomosis system comprising an elongated anvil and a graft vessel fixture movable with respect to said anvil, said graft vessel fixture comprising clamping members each having one or more clamping surfaces adapted to compress the tissue on opposite sides of the graft vessel against tissue contacting surfaces of the anvil; inserting the elongated anvil through the wall of a target blood vessel and positioning the elongated anvil along an interior of the target blood vessel wall; positioning an end of a graft vessel adjacent an exterior of the target blood vessel wall; moving the fixture toward the anvil to compress the graft and target vessel tissue between the anvil and the clamping surfaces of the fixture; and applying energy to the tissue compressed between the anvil and the clamping surfaces of the fixture to secure the graft and target vessels together.