Endoluminal device and method for fabricating same
OwnerJuan Carlos Parodiinventor
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Abstract
An endovascular device is configured to elastically expand to a first outer diameter, plastically deform to a second outer diameter, and retain a third outer diameter that is greater than about 90% of the second outer diameter after a device that has been utilized to deform the endovascular device to the second outer diameter has been removed from the endovascular device. A method of fabricating the endovascular device includes aging the endovascular device at about 485° C. for about 120 minutes.
Claims33
A method for making an endoluminal device comprising at least one superelastic section and at least one plastically deformable section, the superelastic section and plastically deformable section comprising a continuous metallic structure in which the superelastic section has been thermally treated differently than the plastically deformable section, the method comprising:
- selecting a metallic member to be used for constructing the endoluminal device;
- heat treating at least a first portion of the metallic member in a first annealing step under a first set of conditions to set a shape memory for at least the first portion;
- heat treating one or more second portions of the metallic member in a second annealing step under a second set of conditions to make the second portions plastically deformable;
- and
- forming the metallic member into the endoluminal device such that the first portion comprises the superelastic section and the second portion comprises the plastically deformable section.
An endovascular device configured to:
- elastically expand to a first outer diameter;
- plastically deform to a second outer diameter;
- and
- retain a third outer diameter that is greater than about 90% of the second outer diameter after a device that has been utilized to deform the endovascular device to the second outer diameter has been removed from the endovascular device.
A method of heat treating an endovascular device to form a hybrid device that is both elastic and plastically deformable, said method comprising aging the endovascular device at about 485° C. for about 120 minutes.
A method of deploying a hybrid endovascular device fabricated from a single composition and that has undergone a single heat treatment, said method comprising:
- positioning a hybrid endovascular device on an introducer;
- introducing the endovascular device to the proper position;
- allowing the endovascular device to elastically expand to a first outer diameter;
- and
- plastically deforming the endovascular device to a second outer diameter.
Dependencies are inferred from the claim text.