Methods, systems, and apparatuses for manufacturing rotational spun appliances

Patent metadata

Field	Value
Publication number	US-10953586-B2
Application number	US-201715806020-A
Country	US
Kind code	B2
Filing date	Nov 7, 2017
Priority date	Mar 13, 2013
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

The present disclosure relates to methods and systems for manufacturing rotational spun materials. The rotational spun materials are medical appliances or other prostheses made of, constructed from, covered or coated with rotational spun materials, such as polytetrafluoroethylene (PTFE).

First claim

The invention claimed is:

1. A method of making a rotational spun appliance, the method comprising:
rotating a spinneret around a first axis of rotation to produce spinning fibers;
rotating a plurality of mandrels, each mandrel rotating about its own axis of rotation, wherein each mandrel's axis of rotation is not the same as the first axis of rotation; and
contacting the spinning fibers with the rotating mandrels, such that fibers are deposited on the mandrels;
wherein each mandrel's own axis of rotation is perpendicular to the first axis of rotation.

2. The method of claim 1 , wherein the plurality of mandrels are collectively and simultaneously rotating around the first axis of rotation.

3. The method of claim 1 , wherein the rotation of each mandrel around its own axis of rotation results in the surface of the mandrel turning in the same direction as the spinning fibers are spinning.

4. The method of claim 1 , wherein the rotation of each mandrel around its own axis of rotation results in the surface of the mandrel turning in an opposite direction as the spinning fibers are spinning.

5. The method of claim 1 , wherein the fibers are microfibers or nanofibers.

6. The method of claim 1 , wherein the fibers are polymer fibers.

7. The method of claim 1 , further comprising placing fiber-wrapped mandrels in a sintering oven and sintering the fiber-wrapped mandrels.

8. The method of claim 1 , wherein the rotational spun appliance is a stent, stent graft, or graft.

9. A method of manufacturing a component of a medical appliance, the method comprising:
rotating a plurality of collection members to collect fibers ejected from a spinneret; and
rotating the spinneret about a first axis of rotation to produce the fibers;
wherein an axis of rotation of each collection member is perpendicular to the first axis of rotation.

10. The method of claim 9 , wherein the collection members comprise mandrels.

11. The method of claim 10 , wherein the mandrels are cylindrical.

Assignees

• Merit Medical Systems Inc

Inventors

• Hall John William
• Boyd Randal
• Neyme Dylan
• Ferguson F Mark

Classifications

• B29C48/05 Primary

  Filamentary, e.g. strands · CPC title

• D01D5/18

  by means of rotating spinnerets · CPC title

• A61F2/82

  Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) · CPC title

• A61F2240/001

  Designing or manufacturing processes · CPC title

• A61F2/86

  Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure · CPC title