Devices, systems and methods for creation of peripherally located fistula
First Claim
1. A method for percutaneously creating a fistula in a patient between a first blood vessel and a second blood vessel, said method comprising:
- providing an assembly comprising a sheath having a lumen therethrough, a needle slidingly received in the sheath, and a clip disposed within the sheath, wherein the needle has a needle tip configured to be advanced through tissue;
percutaneously advancing the assembly through a skin layer of the patient and into a lumen of the first blood vessel;
advancing the needle from the lumen of the first blood vessel and into a lumen of the second blood vessel;
advancing a guidewire through a lumen of the needle and into the lumen of the second blood vessel;
retracting the needle proximally over the guidewire while the sheath and the clip of the assembly remain in place; and
deploying the clip over the guidewire to scaffold the fistula between the first and second blood vessels.
2 Assignments
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Accused Products
Abstract
Devices, systems and methods are disclosed for the formation of an arteriovenous fistula in the limb of the patient. Embodiments include a device for the creation, modification and maintenance of a fistula that includes an integral fistula creation assembly near its distal end that passes through the skin of the patient, through a first vessel such as an artery, and into a second vessel such as a vein. The fistula creation assembly preferably includes an anastomotic implant that is placed within the fistula to maintain long-term blood flow therethrough. The devices, systems and methods can be used to treat patients with one or more numerous ailments including chronic obstructive pulmonary disease, congestive heart failure, hypertension, hypotension, respiratory failure, pulmonary arterial hypertension, lung fibrosis and adult respiratory distress syndrome.
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Citations
23 Claims
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1. A method for percutaneously creating a fistula in a patient between a first blood vessel and a second blood vessel, said method comprising:
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providing an assembly comprising a sheath having a lumen therethrough, a needle slidingly received in the sheath, and a clip disposed within the sheath, wherein the needle has a needle tip configured to be advanced through tissue; percutaneously advancing the assembly through a skin layer of the patient and into a lumen of the first blood vessel; advancing the needle from the lumen of the first blood vessel and into a lumen of the second blood vessel; advancing a guidewire through a lumen of the needle and into the lumen of the second blood vessel; retracting the needle proximally over the guidewire while the sheath and the clip of the assembly remain in place; and deploying the clip over the guidewire to scaffold the fistula between the first and second blood vessels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification