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Thin-walled scaffolds

A thin-walled and connecting rod technology, applied in stents, medical science, prostheses, etc., can solve problems such as plastic deformation of the stent body, marker displacement, and marker drop-out

Active Publication Date: 2018-11-23
ABBOTT CARDIOVASCULAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two conditions—crimping and balloon expansion—are particularly problematic for attaching markers to stents because both cause significant plastic deformation within the stent body
If this deformation causes significant out-of-plane or irregular deformation of the struts supporting or adjacent to the marker, the marker may become displaced (for example, if the strut holding the marker is twisted or bent during crimping, then the marker may fall out of its hole)

Method used

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  • Thin-walled scaffolds
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Examples

Experimental program
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Embodiment Construction

[0158] In this specification, like reference numerals appearing in the drawings and the description indicate corresponding or identical elements in the different views.

[0159] For the purposes of this disclosure, the following terms and definitions apply:

[0160] The terms "about", "approximately", "generally" or "approximately" refer to less than, or greater than 30%, 20%, 15%, 10%, 5% of a stated value, range, or each endpoint of a stated range , 4%, 3%, 2%, 1.5%, 1%, 1-2%, 1-3%, 1-5% or less than or greater than 0.5%-5%, or deviate from the set Determine the average or expected value of one sigma (sigma), two sigma, three sigma (Gaussian distribution). For example, d1 is about d2 means that the difference between d1 and d2 is 30%, 20%, 15%, 10%, 5%, 4%, 3%, 2%, 1.5%, 1%, 0%, or 1 -2%, 1-3%, 1-5%, or 0.5%-5%. If d1 is the mean, then d2 is about d1 if d2 is within one sigma, two sigma, or three sigma variance or standard deviation of d1.

[0161] It should be understoo...

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Abstract

A thin-walled scaffold includes a radiopaque marker connected to a link. In a first example, the marker is retained on the strut by a head at one or both ends by swaging. In a second example of a thin-walled scaffold the link is modified to avoid interference during crimping. In a third example a distal end of the thin-walled scaffold is modified to improve deliverability of the thin-walled scaffold. These features are combined in a fourth example.

Description

technical field [0001] The present invention relates to bioabsorbable scaffolds; more particularly, the present invention relates to bioabsorbable scaffolds for the treatment of body anatomical lumens. Background technique [0002] A radially expandable endoprosthesis is an artificial device adapted for implantation in an anatomical lumen. "Anatomical lumen" refers to the cavity or body of tubular organs such as blood vessels, urinary tract, and bile ducts. A stent is an example of an endoprosthesis, which is usually cylindrical and serves to hold open and sometimes unfold a portion of the anatomical lumen. Stents are often used to treat atherosclerotic stenosis in blood vessels. "Stenosis" refers to a reduction or narrowing of the diameter of a bodily passage or chamber. In these treatments, stents strengthen the vessel wall and prevent restenosis after angioplasty in the vasculature. "Restenosis"refers to narrowing of a blood vessel or heart valve that recurs after an ...

Claims

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Application Information

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IPC IPC(8): A61F2/915A61F2/958
CPCA61F2/915A61F2/958A61F2002/91516A61F2002/91575A61F2230/0006A61F2230/0054A61F2230/0056A61F2250/0098
Inventor 迪姆·达查德·阿布纳赛尔森蒂尔·埃斯瓦瑞林志成
Owner ABBOTT CARDIOVASCULAR