Alternating magnetic field thermotherapeutic system for tumor

Abstract

The tumor treating thermotherapeutic alternate magnetic field system in medical equipment field includes alternate power source system, magnetic field generating system, magnetic path system thermotherapeutic temperature measuring and feeding back system, alternate magnetic field strength measuring and feeding back system, treating bed system, shielding system and central operation and control system. The alternate magnetic field system has power source output frequency of 1-500 KHz, magnetic conductor made of soft magnetic material of high magnetic conductivity, cross section area of the magnetic conductor gap in 10-1000 sq cm, fixed or adjustable gap of 5-60 cm, and magnetic field strength inside the gap of 1-50 kA / m. Owing to magnetic path system comprising magnetic conductor and gap, the treating part of the alternate magnetic field system has homogeneous magnetic field distribution, high heating efficiency and reasonable heating mode.

Description

technical field [0001] The invention relates to a system in the technical field of medical equipment, in particular to a tumor alternating magnetic field hyperthermia system which utilizes an alternating magnetic field to generate heat from a ferromagnetic material. Background technique [0002] Tumor is one of the most important diseases that cause human death. The research on tumor treatment has always been the focus and focus of the medical field. After people's efforts, there have been many effective treatment methods, such as surgery, chemotherapy, radiotherapy, biological therapy, etc. therapy, heat therapy, etc. Among them, tumor hyperthermia refers to the technology and method of using the thermal effect of non-ionizing radiation physical factors in biological tissues to heat up the tissues and kill tumor cells, so as to achieve the purpose of treatment. Currently, the heating methods used in the clinical treatment of tumors include whole body heating with hot wax, ...

AI Technical Summary

Problems solved by technology

"Although this invention can solve the defects such as uneven heating of tumor parts, easy damage to normal tissues, and limited heating parts and tissues existing in existing tumor hyperthermia devices, it also has problems such as low energy utilization rate, uneven magnetic field and safety. new question

This is because: once the patient is pushed into the electromagnetic induction coil during the treatment by the above-mentioned tumor magnetic hyperthermia treatment apparatus, the whole patient will be in the alternating magnetic field with high field strength, and a large induced electromotive force will be generated on the surface of the human body, resulting in a safety hazard. problem; and the effective magnetic field area for heating only accounts for a small part of the entire magnetic field area generated by the electromagnetic induction coil, resulting in a great waste of energy

In addition, it is impossible to produce a uniform magnetic field distribution in the electromagnetic induction coil with such a large inner diameter, and a gradient must be generated, and the treatment site is in an area with a relatively low magnetic field strength, and the effective utilization rate of the alternating magnetic field is further reduced.

Due to the existence of the above three problems, it is limited in clinical application.

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