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Method and device for determining surface characteristics of stents, and stent having defined surface characteristics

A technology of surface characteristics and surface features, which is applied to devices, brackets, measuring devices, etc. of tubular structures of the human body, and can solve problems such as expensive and complicated methods

Inactive Publication Date: 2014-09-10
QVANTEQ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And this method is very complex and expensive

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  • Method and device for determining surface characteristics of stents, and stent having defined surface characteristics
  • Method and device for determining surface characteristics of stents, and stent having defined surface characteristics
  • Method and device for determining surface characteristics of stents, and stent having defined surface characteristics

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Embodiment Construction

[0055] figure 1 The embodiment shown in is a device according to the invention for determining the surface properties of a stent implanted in a body cavity. The device is used to determine the wetting behavior of the surface of the stent around its circumference and its length, preferably over its entire length and during the wetting behavior. For this purpose, the device has a liquid container 1 which has a liquid with a specific surface tension. The reference weight of the liquid container 1 together with the liquid is determined by a measuring device 2 . The size of the liquid container and the liquid volume can be coordinated with the measurement of the rack. In the case of this embodiment, upon immersion or removal of the stent, the meniscus of liquid on the hydrophilic surface is lifted, while liquid on the hydrophobic surface is repelled. This results in a significant variation in the weight measured by the measuring device. Care must therefore be taken that the tot...

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Abstract

Disclosed are a method and a device for determining surface characteristics of a stent to be implanted in a lumen in a body, a wetting behavior of a stent surface being used as a measure for the surface characteristics of the stent surface. In order to determine the wetting behavior, a course of a wetting power along a length of the stent surface is determined, and a wetting power between the stent surface and a liquid surface is detected along the length of the stent.

Description

technical field [0001] The invention relates to a method and a device for determining the surface properties of a stent implanted in a body cavity and for the stent having defined surface properties, as well as equipment with such a stent, and an insertion device for inserting said stent into a body cavity. Background technique [0002] Implants in the form of artificial blood vessels and stents are widely known. The essential distinction should be between balloon-expandable and self-expanding stents, which are inserted into body lumens by means of an insertion device, such as a catheter. A common feature of stents is that, for insertion into a body cavity, they must have a smaller diameter than to function in the body. Typically, the stents are delivered and packaged in a compressed state and under so-called clean room conditions. A clean room is a room in which the concentration of particles is continuously monitored. Cleanrooms are classified into various classes, so-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/02A61F2/07A61F2/95
CPCA61F2/89A61F2/95A61F2/86A61F2002/0086A61F2240/001A61F2240/008A61F2/0077G01N13/00G01N13/02
Inventor 埃里克·佐克斯特凡诺·布兹艾明·W·马德尔文森特·米莱特
Owner QVANTEQ AG