Intravascular laser heating whole body thermal therapy instrument

Abstract

The invention provides an intravascular laser heating whole body thermal therapy instrument. The instrument comprises an interventional catheter, a laser generator, a laser pulse width modulation system, a body temperature monitoring system and a computer control system. The interventional catheter comprises a catheter body, a metal target, a first thermistor, a second thermistor, a third thermistor, a laser optical fiber coupling terminal and a temperature measuring electrode terminal. The catheter body comprises a cannula, a laser optical fiber and a temperature measuring wire. By using the intravascular laser heating whole body thermal therapy instrument, the temperature of the whole body of a patient can be increased to the temperature treatment interval of 42.5+ / -0.5 DEG C safely and easily, the interventional catheter can stay in the body of the patient in a short time, and the aim of repeated treatment is achieved.

Description

technical field [0001] The invention belongs to the field of medical equipment, in particular to an intravascular laser heating whole body hyperthermia instrument. Background technique [0002] Hyperthermia is a word derived from Greek, which originally means "high fever" or "overheating". therapy. [0003] Tumor hyperthermia refers to the technology and method of using physical methods to heat up biological tissues to kill cancer cells and achieve therapeutic purposes. It takes advantage of the characteristics of the unsound structure of tumor tissue itself, slower heat dissipation than normal tissue when heated, and the sensitivity of malignant tumor cells to high heat. It acts on the DNA replication process of tumor cells in the M phase and S phase, interferes with protein synthesis, and causes tumor cell death. Or apoptosis, while normal tissue is not damaged. [0004] The classification of modern hyperthermia technology has many different classification forms. Accord...

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Problems solved by technology

[0006] Due to technical limitations such as microwave heating cabin, infrared radiation cabin heating, and endogenous field whole-body hyperthermia system, coupled with the powerful heat dissipation function of the human body, it is difficult to raise the temperature of the whole body to a level of 42°C that can be consolidated for hyperthermia.

[0007] Extracorporeal circulation refers to the method of using special equipment to draw part of the blood out of the body, heat it to a predetermined temperature, and then recirculate it into the body to raise the body temperature. It is difficult to popularize because of the expensive equipment and cost, and cumbersome operation.

Extracorporeal circulation heating technology requires the use of a large amount of heparin as an anticoagulant. During the blood transport process, the centrifugal pump generates power, and then returns to the body through heat exchangers and other links. The extracorporeal circulation heating method has the following disadvantages: 1. 2. It has a certain destructive effect on blood cells; 3. Blood is easily mixed with plasticizers, micro particles and other foreign objects into the human body through PVC pipes.

[0008] The heating method of intravascular implantation of thermal seeds must use a metal mesh stent to fix the thermal seeds, which cannot be removed after implantation, and anticoagulant drugs must be taken for life, which increases the risk of thrombosis and bleeding

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