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laser ablation catheter

A catheter and laser technology, applied in the field of medical equipment, can solve the problems of poor treatment effect and small tissue area, and achieve the effect of increasing the contact area, increasing the treatment area, and improving the treatment effect

Active Publication Date: 2022-03-04
HARBIN MEDICAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The area of ​​tissue ablated by laser is small and the treatment effect is poor

Method used

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  • laser ablation catheter
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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The application provides a laser ablation catheter, the laser ablation catheter includes a tube body and a laser beam combiner, the tube body is provided with an optical fiber bundle, and the optical fiber bundle is used to transmit the laser beam from the proximal end of the tube body to the far end of the tube body . The laser beam combiner is connected to the far end of the tube body and is located on the propagation path of the laser beam, which is used to diffuse the laser beam so that the laser beam emitted from the laser beam combiner is integrated into a beam whose cross section is a plane; , the cross section is a section perpendicular to the extension direction of the pipe body. The laser pulse can be evenly distributed on the entire front end of the catheter, increasing the tissue area subjected to ablation treatment and improving the success rate of the operation.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a laser ablation catheter. Background technique [0002] In percutaneous coronary intervention, the designated positioning tube is usually sent to the coronary artery opening to be dilated, and then a balloon of the corresponding size is sent along the guide wire to the stenotic segment, and dilation is performed with appropriate pressure and time according to the characteristics of the lesion , to achieve the purpose of relieving arterial stenosis. In recent years, excimer laser intracoronary plaque ablation uses catheter design and pulsed ultraviolet cold light source, which improves the effectiveness and safety of the operation. Ultraviolet laser light source can be effectively absorbed by biological tissue, and can provide enough energy to destroy the intermolecular force of surface tissue. At the same time, after the light is absorbed by the tissue, the local temperature r...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B18/24
CPCA61B18/24A61B18/201
Inventor 于波康维候静波贾海波赵晨徐晨阳
Owner HARBIN MEDICAL UNIVERSITY