MAGNETISM IRRADIATION DEVICE, ITS MANUFACTURING METHOD AND DEVICE FOR IRRADIATING MAGNETISM INTO LIVING BODY, DRUG DELIVERY SYSTEM, TOOL RETAINER, AND TOOL RETAINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a magnetism irradiation device having biocompatibility, long-period stability and high degree of design freedom.

SOLUTION: The magnetism irradiation device includes a magnet, a space and a sealed casing for holding the magnet in the space. The casing is made of materials that are biocompatible and are not biodegradable. Directivity may be given by applying a shield to a part of the magnet. Suitable materials for the casing include any one of titanium-based materials, ceramics, oxynium and ultrahigh-molecular-weight polyethylene or a combined material of these materials.

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