| 摘要 |
The present invention (60) is directed to a catheter (61) that is configured to self-regulate aspiration rates through a working lumen (63) of the cathet er (60). The catheter (60) comprises a compliant member (74) in communication with the working lumen (63) that is configured to transition from an open position to a closed position when a predetermined aspiration threshold is exceeded. In the closed position, the compliant member (74) is temporarily drawn inward to at least partially occlude flow through the working lumen (63), thereby mitigating the rate of aspiration imposed upon a patient's vessel. When the rate of aspiration is reduced below the threshold level, th e compliant member (74) returns to the open position.
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