Implantable vascular device
First Claim
1. A method for performing extracorporeal blood treatment, said method comprising:
- percutaneously attaching a first catheter to a first subcutaneously implanted port, wherein said first port is connected to an artery by a cannula;
percutaneously attaching a second catheter to a second subcutaneously implanted port, wherein said second port is connected to a vein by a cannula; and
circulating blood from the first catheter through an extracorporeal circuit to the second catheter.
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Accused Products
Abstract
An implantable device grafted directly to vascular structures for high volume blood and/or fluid infusion and/or removal for such purpose as hemodialysis, apheresis, exchange transfusion, or large volume fluid infusion. The device is also adaptable to intermittent access to the venous or arterial circulations for purpose of blood sampling or giving medications. The device is comprised of an implantable fluid chamber connected to a cannula or shunt segment which is then grafted directly to the vascular structure (e.g. artery or vein) using a sewable cuff located at the vascular end of the cannula or shunt segment. The vascular end of the device employs a valve which is directly adjacent to the vascular structure after grafting, in order to prevent reflux of blood and subsequent washout of anticoagulant during periods when the device is not in use. The device is accessed percutaneously with a needle or needle-introduced catheter and is filled with anti-coagulant prior to needle withdrawal to prevent thrombosis.
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Citations
17 Claims
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1. A method for performing extracorporeal blood treatment, said method comprising:
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percutaneously attaching a first catheter to a first subcutaneously implanted port, wherein said first port is connected to an artery by a cannula; percutaneously attaching a second catheter to a second subcutaneously implanted port, wherein said second port is connected to a vein by a cannula; and circulating blood from the first catheter through an extracorporeal circuit to the second catheter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for implanting an arterial port and a venous port to establish connections for an extracorporeal blood treatment circuit, said method comprising:
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surgically implanting a first port capable of percutaneously receiving attachment of a first catheter; surgically attaching one end of a first cannula to an artery, wherein the other end of the cannula is attached to the first port; surgically implanting a second port capable of percutaneously receiving attachment of a second cannula; connecting one end of a second cannula to a vein, wherein the other end of the second cannula is attached to the second port; and surgically closing the sites at which the ports and the cannulas have been implanted. - View Dependent Claims (8, 9, 10, 11)
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12. A method for implanting an arterial port, said method comprising:
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surgically implanting a port capable of percutaneously receiving attachment of a catheter; surgically attaching one end of a cannula to an artery without substantial intrusion into the arterial lumen, wherein the other end of the cannula is attached to the port and the one end has a valve to inhibit blood reflux into the cannula in the absence of blood flow through the port; and surgically closing the sites at which the port and the cannula have been implanted. - View Dependent Claims (13, 14)
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15. A method for administering medication into an artery, said method comprising;
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percutaneously attaching a needle or needle-introduced catheter to a subcutaneously implanted port, wherein said port is connected to the artery by a cannula having a valve near its distal connection to said artery to inhibit blood reflux when medication is not being administered therethrough and wherein the cannula is connected to the artery without substantial intrusion into the arterial lumen; and infusing a fluid medication through the needle or needle-introduced catheter into the port and to the artery. - View Dependent Claims (16, 17)
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Specification