| 摘要 |
A suturing device (520) allows a physician to remotely seal an incision (26) in a blood vessel (16) or other biological tissue. The device (520) comprises an elongated tubular body (514, 515) having a distal portion (515, 522) which is adapted to be inserted percutaneously through the incision (26) and into the blood vessel (16). The distal portion (515, 522) has at least first and second retractable arms (524, 525, 525', 630, 630', 660, 662) which extend from the distal portion (515, 522) of the body (514, 515) and releasably hold a suture (40) within the blood vessel (16). First and second retractable needles (546, 650), each of which is configured to catch the suture (40) from a respective arm (524, 525, 525', 630, 630', 660, 662), are provided along the body (514, 515) proximal to retractable arms (524, 525, 525', 630, 630', 660, 662). The arms (524, 525, 525', 630, 630', 660, 662) and the needles (546, 650) are remotely movable by the physician using a handle (550, 600, 700) or other control mechanism provided at a distal portion of the device (520). In operation, the arms (524, 525, 525', 630, 630', 660, 662) are initially deployed within the blood vessel (16) to hold the ends of the suture (40) beyond the circumference of the tubular body (514, 515). The needles (546, 650) are then deployed from and then retracted into the body (514, 515), during which time the needles (546, 650) pierce the wall (22) of the vessel (16) on substantially opposite sides of the incision (26), release the suture end from the retractable arms (524, 525, 525', 630, 630', 660, 662), and pull the suture (40) through the vessel wall (22). The device (520) is particularly useful for closing and incision (22) in an artery following a catheterization procedure. In one embodiment, the catheter sheath introducer (6) used to perform the catheterization procedure is left in place during the suturing procedure.
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