Proximal catheter assembly having a relief valve
First Claim
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1. Apparatus comprising:
- a hub having a distal end, a blood outlet port, an aspiration port, and a bore in fluid communication with the blood outlet port and the aspiration port;
a catheter having a proximal end, a distal end, a working lumen extending therebetween, and a single inflatable member located at the distal end of the catheter;
wherein the distal end of the hub receives and is sealingly engaged with the proximal end of the catheter so that the bore is in fluid communication with the working lumen of the catheter; and
a relief valve disposed within the hub and configured to regulate the level of suction-assisted aspiration provided to the working lumen of the catheter.
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Abstract
The present invention is directed to a proximal catheter assembly that is configured to facilitate natural or suction-assisted aspiration through a catheter lumen. The proximal catheter assembly comprises a relief valve configured to regulate the level of suction-assisted aspiration provided through the working lumen of the catheter. When the level of suction-assisted aspiration exceeds a predetermined threshold, the relief valve opens to allow fluid to be drawn from tubing coupled to the proximal catheter assembly, thereby mitigating the relatively high levels of aspiration imposed upon the working lumen and the patient'"'"'s vessel.
66 Citations
23 Claims
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1. Apparatus comprising:
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a hub having a distal end, a blood outlet port, an aspiration port, and a bore in fluid communication with the blood outlet port and the aspiration port; a catheter having a proximal end, a distal end, a working lumen extending therebetween, and a single inflatable member located at the distal end of the catheter; wherein the distal end of the hub receives and is sealingly engaged with the proximal end of the catheter so that the bore is in fluid communication with the working lumen of the catheter; and a relief valve disposed within the hub and configured to regulate the level of suction-assisted aspiration provided to the working lumen of the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 20)
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15. A method for regulating the level of suction-assisted aspiration provided to a working lumen of a catheter, the method comprising:
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providing apparatus comprising a hub having a distal end, a blood outlet port, an aspiration port, a relief valve, and a bore in fluid communication with the blood outlet port, the relief valve, and the aspiration port, the distal end of the hub coupled to a catheter having a working lumen extending from its proximal end to its distal end and a single inflatable member located on the distal end of the catheter; providing suction-assisted aspiration through the bore and the working lumen via the aspiration port; causing the relief valve to open when a level of suction-assisted aspiration exceeds a predetermined threshold; and causing fluid from the blood outlet port to be directed through the relief valve and toward the aspiration port, if the level of suction-assisted aspiration exceeds a predetermined threshold. - View Dependent Claims (19)
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21. Apparatus comprising:
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a hub having a distal end, a blood outlet port, an aspiration port, and a bore in fluid communication with the blood outlet port and the aspiration port; a catheter having a proximal end, a distal end, with a single inflatable member located on the distal end, and a working lumen extending therebetween;
wherein the distal end of the hub receives and is sealingly engaged with the proximal end of the catheter so that the bore is in fluid communication with the working lumen of the catheter; anda relief valve disposed within the hub and configured to regulate the level of suction-assisted aspiration provided to the working lumen of the catheter. - View Dependent Claims (22, 23)
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Specification