Non-porous smooth ventricular assist device conduit
First Claim
1. An inflow conduit for an implantable ventricular assist device comprising:
- a flexible, porous tubular graft body comprising a closed structured biocompatible polytetrafluoroethylene (PTFE) to resist tissue ingrowth having an upstream end and a downstream end, the graft body having a substantially smooth inner surface; and
a non-porous covering attached on the outside of said flexible, porous tubular graft body,whereby said inflow conduit is rendered non-porous.
1 Assignment
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Accused Products
Abstract
An improved inflow conduit for an implantable ventricular assist device comprising covering the flexible porous tubular graft body of the conduit with an attached non-porous polymer to produce a non-porous conduit. The flexible conduit has an upstream end and a downstream end, a ventricular attachment structure to which the upstream end of the body connects; and a coupling fitting on the downstream end of the body. Also taught is a combination of the improved inflow conduit with an implantable ventricular assist device. A method for the treatment of congestive heart failure, comprising implanting the implantable ventricular assist device in a patient in need of such treatment, as well as an article of manufacture, comprising packaging material and the implantable ventricular assist device contained within the packaging material are also provided.
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Citations
27 Claims
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1. An inflow conduit for an implantable ventricular assist device comprising:
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a flexible, porous tubular graft body comprising a closed structured biocompatible polytetrafluoroethylene (PTFE) to resist tissue ingrowth having an upstream end and a downstream end, the graft body having a substantially smooth inner surface; and a non-porous covering attached on the outside of said flexible, porous tubular graft body, whereby said inflow conduit is rendered non-porous. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implantable ventricular assist device comprising:
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an inflow conduit comprising a flexible, porous tubular graft body having an upstream end and a downstream end, the body having a substantially smooth inner surface for enhanced flow-through of blood with a minimum of surface-induced turbulence;
a ventricular attachment structure connected to the upstream end of the flexible, porous tubular graft body;
a coupling fitting connected to the downstream end of the flexible, porous tubular graft body;an implantable pumping portion in flow communication with said inflow conduit; an outflow conduit in flow communication with said implantable pumping portion; and a non-porous covering comprising a polymer attached on the outside of said flexible, porous tubular graft body, whereby said inflow conduit is rendered non-porous. - View Dependent Claims (9)
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10. An inflow conduit for an implantable ventricular assist device comprising:
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a flexible, porous tubular graft body having a lumen, an upstream end and a downstream end, the graft body having a substantially smooth inner surface; and a covering attached on the outside of the tubular graft body that will not leak air therethrough when the lumen of the tubular graft body is placed under negative pressures present in ventricular assist device inflow conduits. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An inflow conduit for an implantable ventricular assist device comprising:
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a flexible, porous tubular graft body having an upstream end and a downstream end, the graft body having a substantially smooth inner surface; and a non-porous covering comprising a non-porous PTFE tape attached on the outside of said flexible, porous tubular graft body, whereby said inflow conduit is rendered non-porous.
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26. An inflow conduit for an implantable ventricular assist device comprising:
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a flexible, porous tubular graft body having an upstream end and a downstream end, the graft body having a substantially smooth inner surface; and a non-porous covering comprising a non-porous FEP tape attached on the outside of said flexible, porous tubular graft body, whereby said inflow conduit is rendered non-porous.
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27. An inflow conduit for an implantable ventricular assist device comprising:
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a flexible, porous tubular graft body having an upstream end and a downstream end, the graft body having a substantially smooth inner surface; and a non-porous covering comprising a non-porous polymer tape selected from the group consisting of PFA, PPS, PVDF, PEEK, PS/PES, PCTFE, and ETFE, attached on the outside of said flexible, porous tubular graft body, whereby said inflow conduit is rendered non-porous.
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Specification