Arteriovenous shunt
First Claim
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1. An arteriovenous shunt for surgical implantation comprising:
- a main tube having two ends for subcutaneous implantation and respective connection to a side of a peripheral artery and a side of a peripheral vein,two extension tubes, each of said two extension tubes having two ends with one end of said two extension tubes being subcutaneously connected to said main tube and an opposite free end of said two extension tubes terminating in a hemostatic valve for connection to an input and an output, respectively, of a dialysis machine,said two extension tubes extending substantially parallel and adjacent to each other from said free end towards said one end of said two extension tubes over a majority of their respective lengths so as to exit from the skin of a patient through a single outlet port, anda separation distance between said one end of each of said two extension tubes subcutaneously connected to said main tube being sufficient for dialyzed blood to join venous circulation while avoiding recirculation of the dialyzed blood back to the dialysis machine and close enough so that said two extension tubes exit through said single outlet port to reduce exposure of the patient to a risk of infection.
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Abstract
A vascular access that can be used for hemodialysis and other conditions where a vascular access may be needed. A soft main tube made of PTFE is used with two extension tubes. The ends of the main tube are anastomosed to an artery and a vein. The extension tubes connected to the main tube at one end are connected to the dialysis machine at an opposite end. The entire graft (main tube) is placed in the subcutaneous or deep tissues except for the two exposed ends of the extension tubes which remain in the external position allowing an easy, non-traumatic access to the blood flow.
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Citations
16 Claims
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1. An arteriovenous shunt for surgical implantation comprising:
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a main tube having two ends for subcutaneous implantation and respective connection to a side of a peripheral artery and a side of a peripheral vein, two extension tubes, each of said two extension tubes having two ends with one end of said two extension tubes being subcutaneously connected to said main tube and an opposite free end of said two extension tubes terminating in a hemostatic valve for connection to an input and an output, respectively, of a dialysis machine, said two extension tubes extending substantially parallel and adjacent to each other from said free end towards said one end of said two extension tubes over a majority of their respective lengths so as to exit from the skin of a patient through a single outlet port, and a separation distance between said one end of each of said two extension tubes subcutaneously connected to said main tube being sufficient for dialyzed blood to join venous circulation while avoiding recirculation of the dialyzed blood back to the dialysis machine and close enough so that said two extension tubes exit through said single outlet port to reduce exposure of the patient to a risk of infection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An arteriovenous shunt for surgical implantation comprising:
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a main tube having two ends for subcutaneous implantation and respective connection to a side of a peripheral artery and a side of a peripheral vein, two extension tubes, each of said two extension tubes having two ends with one end of said two extension tubes being subcutaneously connected to said main tube, said two extension tubes extending substantially parallel and adjacent to each other over a majority of their respective lengths so as to exit from the skin of a patient through a single outlet port, and a separation distance between said one end of each of said two extension tubes subcutaneously connected to said main tube being sufficient for dialyzed blood to join venous circulation while avoiding recirculation of the dialyzed blood back to the dialysis machine and close enough so that said two extension tubes exit through said single outlet port to reduce exposure of the patient to a risk of infection. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification