Apparatus for creating formed elements used to make wound stents

Patent metadata

Field	Value
Publication number	US-9676022-B2
Application number	US-201514971622-A
Country	US
Kind code	B2
Filing date	Dec 16, 2015
Priority date	Apr 3, 2012
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A method for forming a wave form for a stent includes moving a first forming portion of a first forming member across an axis along which a formable material is provided in a first direction substantially perpendicular to the axis to engage and deform the formable material while engaging the formable material with a first forming portion of the second forming member. The method includes moving the first forming portion of the first forming member and the first forming portion of the second forming member across the axis in a second direction that is substantially opposite the first direction to draw and form the formable material over the first forming portion of the second forming member, disengaging the first forming member from the formable material, and rotating the first forming member to position a second forming portion of the first forming member to face the formable material.

First claim

What is claimed is:

1. A forming apparatus configured to form a wave form for a stent out of a formable material, the wave form comprising a plurality of substantially straight portions and a plurality of curved portions, the apparatus comprising:
a feeder constructed and arranged to receive a supply of the formable material and to provide the formable material along an axis;
a first forming member configured to be movable along two orthogonal axes and rotatable in a plane defined by the two orthogonal axes, the first forming member comprising a first forming portion and a second forming portion having a size different from the first forming portion, each of the first forming portion and the second forming portion configured to engage and deform the formable material;
a second forming member positioned on an opposite side of the axis relative to the first forming member, the second forming member configured to be movable along the two orthogonal axes and comprising a first forming portion configured to engage and deform the formable material; and
a controller in communication with the feeder, the first forming member, and the second forming member, the controller being configured to control movement of the first and second forming members to form the wave form.

2. The forming apparatus according to claim 1 , further comprising a first actuator in communication with the controller and configured to move the first forming member, and a second actuator in communication with the controller and configured to move the second forming member.

3. The forming apparatus according to claim 2 , further comprising a first motor configured to rotate the first forming member to locate the first forming portion or the second forming portion of the first forming member in a position facing the axis.

4. The forming apparatus according to claim 3 , wherein the second forming member is configured to be rotatable, the second forming member further comprising a second forming portion configured to engage and deform the formable material.

5. The forming apparatus according to claim 4 , further comprising a second motor configured to rotate the second forming member to locate the first forming portion or the second forming portion of the second forming member in a position facing the axis.

6. The forming apparatus according to claim 1 , wherein the formable material is a wire.

7. The forming apparatus according to claim 1 , wherein the formable material is a strip of material.

Assignees

• Medtronic Vascular Inc

Inventors

• Ensign Lance
• Griswold Erik

Classifications

• B21F1/04

  Undulating · CPC title

• A61F2240/001

  Designing or manufacturing processes · CPC title

• A61F2/915

  with bands having a meander structure, adjacent bands being connected to each other · CPC title

• B21F45/008 Primary

  of medical instruments, e.g. stents or corneal rings · CPC title

• A61F2/90

  characterised by a net-like or mesh-like structure · CPC title