Transcatheter device and minimally invasive method for constricting and adjusting blood flow through a blood vessel

Patent metadata

Field	Value
Publication number	US-10568634-B2
Application number	US-201715420772-A
Country	US
Kind code	B2
Filing date	Jan 31, 2017
Priority date	Feb 1, 2016
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

A pulmonary artery flow restrictor system includes a funnel shaped membrane with a proximal base and a restrictive distal opening which is stretchable to larger sizes. A self-expanding frame is attached to the proximal base of the membrane for securing the membrane within the pulmonary artery.

First claim

What is claimed is:

1. A pulmonary artery flow restrictor system comprising:
a funnel shaped membrane with a proximal base and a restrictive distal opening which is stretchable to larger diameters; and
a self expanding frame attached to the proximal base of the funnel shaped membrane for securing the funnel shaped membrane within the pulmonary artery, the frame including arms extending upward over the funnel shaped membrane and crossing above the restrictive distal opening such that the arms extend into a branch of the pulmonary artery.

2. The pulmonary artery flow restrictor system of claim 1 in which the funnel shaped membrane is made of a polymer.

3. The pulmonary artery flow restrictor system of claim 2 which said polymer is polytetrafluoroethylene (ePTFE).

4. The pulmonary artery flow restrictor system of claim 1 in which the frame is made of a shape memory alloy.

5. The pulmonary artery flow restrictor system of claim 4 which said shape memory alloy is Nitinol.

6. The pulmonary artery flow restrictor system of claim 1 in which the frame includes a stent like structure.

7. The pulmonary artery flow restrictor system of claim 6 which the frame includes a wire bent to form a series of spaced lower apexes and a series of spaced upper apexes.

8. The pulmonary artery flow restrictor system of claim 7 which the spaced lower apexes are secured to the proximal base of the funnel shaped membrane.

9. The pulmonary artery flow restrictor system of claim 7 in which the frame further includes a plurality of bent anchoring arms extending upwardly over the restrictive distal opening.

10. The pulmonary artery flow restrictor system of claim 9 in which each of the bent anchoring arms includes members extending from adjacent frame upper apexes.

11. The pulmonary artery flow restrictor system of claim 1 further including a transcatheter device for delivering the funnel shaped membrane and the frame into the pulmonary artery.

12. The pulmonary artery flow restrictor system of claim 11 in which the transcatheter device includes an inner lumen about a guide wire and a retractable lumen retractable relative to the inner lumen.

13. The pulmonary artery flow restrictor system of claim 12 which the frame is removably attached to the inner lumen.

14. The pulmonary artery flow restrictor system of claim 13 in which there are pins attached to the inner lumen and the frame includes eyelets receiving said pins therethrough.

15. A pulmonary artery flow restrictor comprising:
a funnel shaped membrane with a proximal base and a restrictive distal opening which is stretchable to larger diameters;
a self expanding frame including a series of spaced lower apexes and a series of spaced upper apexes, the lower apexes secured to the proximal base of the funnel shaped membrane and a plurality of bent anchoring arms extending upwardly and over the funnel shaped membrane and crossing above the restrictive distal opening such that the arms extend into a branch of the pulmonary artery, each bent anchoring arm including members extending from adjacent upper frame apexes.

16. A pulmonary artery flow restrictor comprising:
a funnel shaped membrane including a restrictive distal opening, the funnel shaped membrane made of a material which is irreversibly stretchable to larger diameters by a balloon catheter to vary the size of the restrictive opening; and
a self expanding frame attached to the membrane for securing the membrane within the pulmonary artery, the frame including arms extending upward over the funnel shaped membrane and crossing above the restrictive distal opening such that the arms extend into a branch of the pulmonary artery.

17. The pulmonary artery flow restrictor of claim 16 in which the funnel shaped membrane is made of a polymer.

18. The pulmonary artery flow restrictor of claim 17 in which said polymer is polytetrafluoroethylene (ePTFE).

Assignees

• Vivonics Inc

Inventors

• Goldie James H
• Labrecque Brendan
• Galea Anna M
• Klem Eric
• Doyle Thomas
• Cohen Ian
• Robinson Tim

Classifications

• A61B2017/12054

  Details concerning the detachment of the occluding device from the introduction device · CPC title

• A61F2002/068

  Modifying the blood flow model, e.g. by diffuser or deflector · CPC title

• A61B17/12172

  having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526) · CPC title

• A61B17/12177

  comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated · CPC title

• A61M29/02

  Dilators made of swellable material {(balloon catheters for angioplasty A61M25/104)} · CPC title