| 摘要 |
This invention is a hemostasis cannula comprising a housing (10) having a passage (11) therethrough size to receive a catheter (57), and a valve body (1) (1') (1") mounted in the passage (11). The valve body (1) (1') (1") includes an opening (2) (3) (102) (103) (112) (113) (2') (3') (2") (3") therethrough which forms a seal around a catheter (57) enclosed within the cannula. In one embodiment, an internal ring (8") of pliable material lines at least a portion of the interior of the opening (3 '). The valve body (1) (1') (1") is compressed within the cannula housing (10). When the catheter (57) is removed, the valve body (1) (1') (1") closes thus blocking airflow into the patient's blo od vessel and also blocking blood flow out of the patient's blood vessel. The cannula housing (10) also includes a side port (45) for introducing fluids into the patient's blood vessel.
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