Laser thermal therapy probe based on photothermal effect of optical fiber material

Abstract

The invention relates to a laser thermal therapy probe based on a photothermal effect of an optical fiber material. The laser thermal therapy probe comprises a light transmission optical fiber, a protective sleeve, an optical fiber temperature sensor and a photothermal probe. The front end or the back end of the photothermal probe is connected with the optical fiber temperature sensor; the optical fiber temperature sensor on the back end is connected with the light transmission optical fiber; the protective sleeve wraps outside the light transmission optical fiber, the optical fiber temperature sensor and the photothermal probe. In a therapy process, the thermal therapy probe is put into a tissue requiring a treatment, the imported laser is converted into a thermal energy by the photothermal probe, and the thermal energy is conducted and radiated all around by centering on the probe, accordingly forming a certain temperature field distribution in the tissue. A complete distributed measurement of temperature distribution field temperature information around the tissue is achieved by the optical fiber temperature sensor. Being simple in structure, low in cost, small in size, and easy to manufacture, the laser thermal therapy probe based on the photothermal effect of the optical fiber material can measure the temperature distribution in real time, thereby providing a safe and highly practical probe structure as well as a small-size point heat source device with precise temperature control to the laser-induced interstitial thermal therapy.

Description

technical field [0001] The invention relates to a laser hyperthermia probe based on the photothermal effect of optical fiber material. Background technique [0002] Laser hyperthermia is a new type of tumor treatment technology that introduces light into the human body through optical fibers to cause coagulation and necrosis of local biological tissues after being heated. It can achieve the purpose of tumor removal in situ through a small invasion. Compared with traditional surgical resection, this method has the advantages of shorter operation time, less surgical trauma, less massive bleeding, less pain to patients, better postoperative recovery effect, and certain anti-inflammatory and bactericidal effects. It has a certain prospect in the treatment of diseases, especially in the treatment of tumors, and has been used to treat many types of tumors, such as tumors in the liver, brain, breast, retina and other parts. [0003] In laser hyperthermia, it is necessary to introd...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of large number of probes, large size, point distributed temperature measurement and difficult control of laser output dose in laser hyperthermia, the present invention proposes a laser hyperthermia probe based on the photothermal effect of optical fiber material, which has simple structure, easy manufacture and low cost. Low cost, high precision, and strong practicability, realizing the integration of light transmission and sensing

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