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Copper-tantalum alloy and location application thereof to optical fibers for photodynamics therapy

A technology of photodynamic therapy and tantalum alloy, which is applied in the field of medical devices, can solve the problems of difficult accurate positioning, unfavorable treatment and maintenance, and less obvious problems, and achieve the effect of improving imaging clarity

Active Publication Date: 2017-05-17
桂林市兴达光电医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a copper-tantalum alloy and its positioning application on the optical fiber for photodynamic therapy, which is used to solve the problem that copper or aluminum is used as the positioning of the scattering end of the optical fiber in the prior art, which is not obvious during CT scanning, and it is not easy to locate accurately, and aluminum The material is easy to chemically react with the acid or alkali of the human body, which is not conducive to the technical problems of treatment and maintenance

Method used

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  • Copper-tantalum alloy and location application thereof to optical fibers for photodynamics therapy

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Embodiment 1

[0015] Raw material composition according to mass percentage: tantalum 30%, the balance is copper and unavoidable impurities, among impurities: iron ≤ 0.20%, zinc ≤ 0.20%, aluminum ≤ 3%, nickel ≤ 0.5%, tin ≤ 0.4%, will Metal wires made of alloys with a cross-section of 1×0.5 mm and metal wires made of aluminum and copper with the same cross-section were put into a CT scanner for scanning. It was found that the images of copper-tantalum alloys were obviously clearer than those of aluminum or copper. .

Embodiment 2

[0017] Such as figure 1 As shown, the copper-tantalum alloy is made into a ring-shaped positioning point 4, and the positioning point 4 is set on the transmission fiber with the cladding 2 and coating layer 3 scraped off, leaving only the core 1. The other end of the transmission fiber is connected to the connector 5 connections. The optical fiber positioned with copper-tantalum alloy is obviously clearer in the CT scanning image than the positioning point made of copper or aluminum alone.

[0018] The present invention comprehensively considers the high cost caused by using tantalum material alone as the positioning point, and using only copper or aluminum as the positioning point will cause problems such as unclear CT scanning and the like. cost; the use of copper-tantalum alloy instead of the original copper or aluminum as the positioning point of the optical fiber not only improves the imaging clarity of the positioning point in CT scanning, but also solves the problem of...

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Abstract

The present invention discloses a copper-tantalum alloy and location application thereof to optical fibers for photodynamics therapy, and relates to the field of medical equipment. In order to solve the technical problems in the prior art that scattering ends of optical fibers are made of copper or aluminum for location so as to be not obvious during CT scanning and not prone to accurate location, and the aluminum material is likely to chemically react with acids or alkalis in human body and thus against treatment and maintenance, a copper-tantalum alloy is used and is composed of the following raw materials, by weight, 30-50% of tantalum and the balance of copper, and inevitable impurities including less than or equal to 0.20% of iron, less than or equal to 0.20% of zinc, less than or equal to 3% of aluminum, less than or equal to 0.5% of nickel, and less than or equal to 0.4% of tin; and the alloy is disposed on an optical fiber for photodynamics therapy as a location point. According to the invention, with the copper-tantalum alloy as the location point for an optical fiber instead of previous copper or aluminum, the reproduced image resolution for the location point in CT scanning is improved, and also, the problem that the aluminum material chemically reacts with acids or alkalis in human body and thus is against treatment and maintenance is solved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a copper-tantalum alloy and its positioning application on a photodynamic therapy optical fiber. Background technique [0002] In medical devices combined with photosensitizing drugs to treat tumors, diffused optical fibers are often used. Its structure includes a silica fiber connected to the end of the transmission fiber. The laser light transmitted from the transmission fiber is scattered through the silica fiber, and the scattered laser light is irradiated to the photosensitive drug. Stimulate photosensitizing drugs to produce drug effects and achieve the purpose of treating tumors. At present, the commonly used dispersive optical fiber is mainly divided into two types, one is column (strip) shape and the other is point shape. It is usually necessary to extend the optical fiber into the human body during treatment. In order to realize the positioning of the scattering end durin...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C27/02A61N5/06
CPCA61N5/06A61N2005/0626A61N2005/063C22C9/00C22C27/02
Inventor 黎富尧
Owner 桂林市兴达光电医疗器械有限公司