| abstract |
A percutaneous tissue track closure assembly ( 2 ) includes a semipermeable barrier ( 26 ) mounted to the distal end of a tubular barrier carrier ( 20 ). The barrier is passed down a tissue track ( 12 ) and into a blood vessel ( 18 ) where the barrier is expanded to close off the blood vessel opening ( 14 ). A syringe device is used to drive a hemostatic flowable material ( 30 ) through a delivery tube ( 34 ) and into the tissue track. The semipermeable barrier permits blood to flow therethrough but prevents passage of the hemostatic flowable material therethrough. The hemostatic material includes a material which swells upon contact with blood, and a blood clotting agent. After an appropriate period of time, the barrier is collapsed and the barrier carrier and delivery tube are removed from the tissue track. |