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Novel fiber catheter and preparation method thereof

An optical fiber catheter, a new type of technology, applied in the field of interventional radiology, can solve the problems of ineffective combination, simultaneous delivery of lasers and drugs, etc., to shorten the administration time, reduce resistance, and enhance the effect of use.

Active Publication Date: 2017-11-24
尚华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since there is currently no effective device for simultaneously delivering laser light and drugs into blood vessels, photodynamic therapy cannot be effectively combined with percutaneous femoral artery puncture and catheterization to take advantage of the simultaneous administration of intravascular photodynamic therapy

Method used

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  • Novel fiber catheter and preparation method thereof
  • Novel fiber catheter and preparation method thereof
  • Novel fiber catheter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 As shown, a novel optical fiber guide is provided with a cavity 1 for conducting liquid or gas and an optical fiber core layer 2 for transmitting light, and the cavity 1 is arranged at the central axis of the optical fiber guide; The periphery of the cavity 1 is provided with an annular optical fiber core layer 2 made of high refractive index light-guiding material, and the optical fiber core layer 2 constitutes the outer wall of the cavity 1 . Since the refractive index of the optical fiber core layer 2 is higher than that of the first cladding layer 3 and the liquid in the cavity 1 , the laser light or light is confined and transmitted in the annular optical fiber core layer 2 .

[0046] The optical fiber core 2 is wrapped with a first cladding 3 made of low refractive index light-guiding material; the first cladding 3 is coated with a coating 4, which can protect the optical fiber core 2 Optical fiber core layer 2. Enhance the strength and flexibili...

Embodiment 2

[0050] Such as figure 2 and 7 As shown, a new type of optical fiber guide is provided with a cavity 1 for conducting liquid or gas and an optical fiber core layer 2 for transmitting light; the cavity 1 is arranged at the central axis of the optical fiber guide; The periphery of the cavity 1 is provided with an annular optical fiber core layer 2 made of high refractive index light-guiding material, and the optical fiber core layer 2 constitutes the outer wall of the cavity 1 .

[0051] The optical fiber core layer 2 is a tubular optical fiber core layer 2 formed by a plurality of cylindrical optical fibers closely arranged in a ring, that is, the optical fibers are arranged in a ring to surround the cavity 1 or constitute the inner wall of the cavity 1 .

[0052] A polymer layer 5 is provided on the outside of the optical fiber core layer 2 , and the polymer layer 5 has certain flexibility, and the outer side of the cylindrical optical fiber is embedded in the inner wall of t...

Embodiment 3

[0057] Such as Figure 6 , 11 As shown in ~12, a new type of optical fiber conduit is provided with a cavity 1 and an optical fiber core layer in it. The cavity 1 and the optical fiber core layer are arranged in parallel, and the periphery of the cavity 1 is surrounded by a confinement tube 11. The The confinement tube 11 constitutes the wall of the cavity 1; the optical fiber core layer includes an optical fiber body 12 arranged at the center of the optical fiber core layer and a second cladding layer surrounding the fiber body 12, the second The refractive index of the cladding is lower than the refractive index of the fiber body, and the laser is transmitted in the fiber body with a high refractive index; the second cladding is provided with a second coating that can protect the fiber body and enhance the strength of the fiber body Layer 13.

[0058] Both the constraining tube 11 and the second coating layer 13 are wrapped with a wrapping layer 14 made of polymer. The wr...

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Abstract

The invention relates to a novel fiber catheter and a preparation method thereof. The fiber catheter is internally provided with a cavity for transmitting liquid or gas and a fiber core layer for transmitting light. The top end of the fiber catheter is provided with a hemispherical or conical, cover which is a transparent cover. The cover is provided with a plurality of through holes which can release drug and light energy. The fiber catheter can be used for memorizing diameter change characteristics of metal and wave ducts, and fibers are pressed to be embedded into a polymer layer. According to the fiber catheter, drugs can be transported through the cavity, the fiber core layer with a high refractive index transmits light, the overall body of the novel fiber catheter can be bent and rotated, the drugs can be directly transported to lesions through a tiny pipeline such as a blood vessel, and the treatment of a photodynamic tumor is facilitated.

Description

technical field [0001] The invention relates to the technical field of interventional radiology in the medical field, in particular to a novel optical fiber catheter and a preparation method thereof. Background technique [0002] In 1953, Seldinger first reported the method of percutaneous femoral artery puncture with a puncture needle. This closed catheterization technology does not block the blood flow of the inserted blood vessel (artery or vein), has less bleeding, and reduces local complications from 8% to 1.3%, so that the catheter technology is widely used in diagnostic radiology and interventional radiology, that is, Surgical radiology plays a wide-ranging role in different fields. For example, external carotid artery cannulation, which is widely used at present, can be treated with chemical drugs before head and neck malignant tumors. , Pushed to the tumor site from the artery, and then release the drug slowly, the curative effect is better. After the tumor is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/06
CPCA61N5/062A61N2005/063
Inventor 尚华吕新杰王智文
Owner 尚华
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