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Medical instrument with X-ray marker particles and an MR marker

A technology of medical devices and markers, applied in the field of medical devices, can solve problems such as unusable

Active Publication Date: 2011-04-27
马威斯介入股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon fibers are electrical conductors, making them unusable for magnetic resonance tomography

Method used

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  • Medical instrument with X-ray marker particles and an MR marker
  • Medical instrument with X-ray marker particles and an MR marker
  • Medical instrument with X-ray marker particles and an MR marker

Examples

Experimental program
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Effect test

Embodiment Construction

[0037]Hereinafter, the present invention will be exemplarily described on the basis of a guide wire 1 for a catheter. The guidewire 1 is made of a material that does not produce any MRT artifacts. Such materials are, for example, ceramics or plastics, such as PEEK, PEBAX, PE, PP, PU, ​​silicone, polylactic acid polymers, polyaramids or memory plastics. Plastics are especially reinforced with fibres. In addition to the aforementioned plastics, epoxy resins can also be used as matrix material. The fibers are glass fibers or ceramic fibers, or Kevlar® fibers, Dacron, plant-based fibers (eg silk, sisal, hemp, etc.). A material that does not produce any MRT artifacts must be free from conductive parts. The length of the conductive portion should be no greater than 15 cm, preferably no greater than 10 cm or 5 cm. This is why conductive fibers such as coal-based or carbon-based fibers or conductive threads can be used if the parts are sufficiently electrically insulated from each...

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Abstract

The invention relates to a medical instrument that can be inserted into a human or animal body, said medical instrument comprises an instrument body, and the instrument body comprises at least one poor electrically conducting rod-type body made of a matrix material and non-metallic filaments. The medical instrument is characterised in that the rod-shaped body is doped with X-ray marker particles, and the medical instrument comprises an MR-marker, or that the instrument body comprises an immobilised active MR marker in the surface area.

Description

technical field [0001] The present invention relates to medical devices. More specifically, the invention relates to medical devices detectable by magnetic resonance tomography. Background technique [0002] WO 2007 / 000148 A2 discloses a rod-like body for forming a medical device, such as a catheter or a guide wire for a catheter. Such a rod-like body includes one or more filaments and a non-ferromagnetic matrix material encapsulating the filaments. Dopants formed from particles that produce MRT artifacts are introduced into the matrix material. [0003] A detailed description of magnetic resonance tomography (MRT), or magnetic resonance imaging, can be found at http: / / en.wikipedia.org / wiki / MRT. [0004] US 2003 / 0055449 A1 discloses a balloon catheter in which the balloon is formed from a polymeric material including a ferromagnetic or paramagnetic material such that it is visible during a magnetic resonance examination. [0005] US 5,154,179 discloses a catheter formed,...

Claims

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Application Information

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IPC IPC(8): A61L27/50A61L29/18A61L31/18A61F2/82A61M25/00G03B42/02
CPCA61L31/18A61L29/18A61L27/50A61F2/82A61M25/00G03B42/02A61L2420/00
Inventor 约阿希姆·菲弗克劳斯·迪林
Owner 马威斯介入股份有限公司
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