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US-12127970-B2 · Oct 29, 2024 · US
Method of improving fracture toughness of implantable medical devices through annealing
US8961862B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8961862-B2 |
| Application number | US-201313794537-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2013 |
| Priority date | Aug 11, 2008 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing are disclosed herein. A polymeric construct is annealed with no or substantially no crystal growth to increase nucleation density. After the annealing, crystallites are grown around the formed nuclei. An implantable medical device, such as a stent, can be fabricated from the polymer construct after the crystallite growth.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of making a stent comprising: obtaining a polymeric tube; annealing the polymeric tube at a temperature in a temperature range of above Tg and below Tm of a polymer of the polymeric tube with no crystal growth during a selected annealing time of greater than 1 hr; after annealing, processing the polymeric tube to increase the crystallinity to a desired crystallinity level; and fabricating a stent from the tube after the processing.…
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Classifications
- A61L31/06Primary
Human Necessities · mapped topic
Human Necessities · mapped topic
Chemistry & Metallurgy · mapped topic
- B29C51/002Primary
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US8961862B2 cover?
- Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing are disclosed herein. A polymeric construct is annealed with no or substantially no crystal growth to increase nucleation density. After the annealing, crystallites are grown around the formed nuclei. An implantable medical device, such as a stent, can be fabricated from the polymer construc…
- Who is the assignee on this patent?
- Abbott Cardiovascular Systems
- What technology area does this patent fall under?
- Primary CPC classification A61L31/06. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).