Patent 7147617 Issued on December 12, 2006. Estimated Expiration Date: November 27, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
604/8, DEVICES TRANSFERRING FLUIDS FROM WITHIN ONE AREA OF BODY TO ANOTHER (E.G., SHUNTS, ETC.)604/6.16, Body inserted tubular conduit structure604/264, Body inserted tubular conduit structure (e.g., needles, cannulas, nozzles, trocars, catheters, etc.)606/153, Connector for hollow body organs623/1.44, Having plural layers606/127, Means for concretion removal623/1.33, Monofilament623/1.32, Having built-in reinforcement623/23.7, Stent623/1.22, Helically wound623/1.13, Stent in combination with graft623/1.42Drug delivery
A graft, for example, an arterio-venous shunt graft, is provided, which in a first aspect of the subject invention, is formed with longitudinal ribs. With fibrotic tissue ingrowth between the ribs, a composite rib/tissue layer is formed about the graft. The ribs provide counteracting lateral force against the embedded tissue to seal punctures formed therethrough during hemodialysis procedures. To provide additional surface area for puncturing, the graft may be formed with a truncated cross-section. With a second aspect of the invention, the graft is mounted onto a strip to prevent kinking, twisting or bending during an implantation procedure.
Other References
Search Report issued on Mar. 26, 2003 for International Application No. PCT/US 02/29292 filed Sep. 16, 2002.
November 27, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
