High-flow port and infusion needle systems
First Claim
Patent Images
1. A multi-reservoir port system, comprising:
- a vascular access port, including;
a housing defining first and second reservoirs,a first septum mounted within the housing sealing the first reservoir, the first septum comprising an elastomeric material having a first septum first layer having a first durometer and a first septum second layer having a second durometer, the first septum second layer being encapsulated on all sides by the first septum first layer,a second septum mounted within the housing sealing the second reservoir, the second septum comprising an elastomeric material having a second septum first layer having a first durometer and a second septum second layer having a second durometer, the second septum second layer being encapsulated on all sides by the second septum first layer,an inlet stem having an inlet lumen in fluid communication with the first reservoir, andan outlet stem having an outlet lumen in fluid communication with the second reservoir; and
a dual-lumen catheter having a proximal end, a distal end, and first and second lumens extending therebetween;
wherein the inlet stem is dimensioned to receive the first lumen at the proximal end of the catheter; and
wherein the outlet stem is dimensioned to receive the second lumen at the proximal end of the catheter.
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Abstract
The present invention relates to a multi-reservoir port, catheter and non-coring needle systems that support high-flow applications such as hemodialysis and apheresis. In particular, the present invention relates to improvements to each of these systems to provide optimal flow rates and septum life with minimal intraluminal pressure; both individually and in combination.
543 Citations
14 Claims
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1. A multi-reservoir port system, comprising:
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a vascular access port, including; a housing defining first and second reservoirs, a first septum mounted within the housing sealing the first reservoir, the first septum comprising an elastomeric material having a first septum first layer having a first durometer and a first septum second layer having a second durometer, the first septum second layer being encapsulated on all sides by the first septum first layer, a second septum mounted within the housing sealing the second reservoir, the second septum comprising an elastomeric material having a second septum first layer having a first durometer and a second septum second layer having a second durometer, the second septum second layer being encapsulated on all sides by the second septum first layer, an inlet stem having an inlet lumen in fluid communication with the first reservoir, and an outlet stem having an outlet lumen in fluid communication with the second reservoir; and a dual-lumen catheter having a proximal end, a distal end, and first and second lumens extending therebetween; wherein the inlet stem is dimensioned to receive the first lumen at the proximal end of the catheter; and wherein the outlet stem is dimensioned to receive the second lumen at the proximal end of the catheter. - View Dependent Claims (2, 3)
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4. A multi-reservoir port and needle system, comprising:
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a vascular access port, including; a housing defining first and second reservoirs, a first septum mounted within the housing sealing the first reservoir, the first septum comprising an elastomeric material having a first septum first layer having a first durometer and a first septum second layer having a second durometer, the first septum second layer being encapsulated on all sides by the first septum first layer, a second septum mounted within the housing sealing the second reservoir, the second septum comprising an elastomeric material having a second septum first layer having a first durometer and a second septum second layer having a second durometer, the second septum second layer being encapsulated on all sides by the second septum first layer, an inlet stem having an inlet lumen in fluid communication with the first reservoir, and an outlet stem having an outlet lumen in fluid communication with the second reservoir; and a needle assembly, including; at least one infusion needle; and at least two aspiration needles wherein the at least two aspiration needles are attached to each other so as to be parallel of one another; wherein the infusion needle is configured to penetrate the second septum of the vascular access port, and the at least two aspiration needles are configured to penetrate the first septum of the vascular access port. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of performing apheresis, comprising:
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implanting a multi-reservoir vascular access port, the multi-reservoir vascular access port comprising; a housing defining an aspiration reservoir and an infusion reservoirs, a first septum mounted within the housing sealing the aspiration reservoir, the first septum comprises an elastomeric material having a first septum first layer having a first durometer and a first septum second layer having a second durometer, the first septum second layer being encapsulated on all sides by the first septum first layer, a second septum mounted within the housing sealing the infusion reservoir, the second septum comprises an elastomeric material having a second septum first layer having a first durometer and a second septum second layer having a second durometer, the second septum second layer being encapsulated on all sides by the second septum first layer; accessing the aspiration reservoir of the multi-reservoir vascular access port with an aspiration needle assembly; accessing the infusion reservoir of the multi-reservoir vascular access port with an infusion needle assembly; flowing fluid from the aspiration reservoir through the aspiration needle assembly to an apheresis machine; and flowing fluid from the apheresis machine to the infusion reservoir through the infusion needle assembly. - View Dependent Claims (14)
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Specification