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US 11,077,239 B2Granted
Tributary access device and methods of use
OwnerStephen Richard Ashinventor
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Abstract
Described herein are devices and methods for vascular access via the tributaries. A single lumen catheter, with a bidirectional valve at the tip is disclosed. Flow is out the longitudinal tip of the catheter and not the sides. The two-way valve will act passively but has low opening and closing pressures. A method utilizing endo-to-side port placement of said catheter in vasculature is disclosed. Anastomosis methods are described using said catheter.
Claims14
A method to access a vasculature comprising:
- providing a tributary access device (TAD);
- wherein the TAD comprises a single-lumen catheter,
- passing the single-lumen catheter through a skin of a user, then
- passing the single-lumen catheter through a tributary vessel towards a nearby junction with a target vessel, and
- positioning the single-lumen catheter so that a tip of the catheter extends no more than 1-3 millimeters within a wall of the target vessel,
- wherein the catheter is connected to the target vessel in an end-to-side connection by neo-intimal sheathing or stenosis of the tributary vessel and without surgical anastomosis of the target vessel or the tributary vessel.
3 more elements
A method for continuous-flow extracorporeal therapies comprising:
- providing a first tributary access device (first TAD) and a second tributary access device (second TAD), each comprising a single-lumen catheter,
- connecting the first TAD single-lumen catheter to a first location and the second TAD single-lumen catheter to a second location through a method to access a vasculature comprising:
- passing each single-lumen catheter through a skin of a user, then
- passing each single-lumen catheter towards a nearby junction with a target vessel, and
- positioning each catheter so that a tip extends no more than 1-3 millimeters within a wall of the target vessel,
- wherein each single-lumen catheter is connected to the target vessel in an end-to-side connection by neo-intimal sheathing or stenosis and without surgical anastomosis,
- removing blood from a first vessel via the first TAD single-lumen catheter at the first location, and
- returning blood to a second vessel via the second TAD single-lumen catheter at the second location, wherein the first and the second vessels are selected from the group consisting of an artery and a vein.
5 more elements
Dependencies are inferred from the claim text.