Medical device
First Claim
Patent Images
1. A medical apparatus, comprising:
- a body cavity inserting portion which is inserted into a body and which has a thrust-generating spiral projected portion in contact with a body cavity; and
rotating device for rotating the thrust-generating spiral projected portion, whereinthe rotating device includes;
a magnetic field generating device arranged outside the body for generating a rotating magnetic filed; and
a magnet arranged inside the body cavity inserting portion and driven to rotate by the rotating magnetic field;
the thrust-generating spiral projected portion is set to have a shape with a projection height from not less than 0.3 mm to not more than 3 mm; and
the rotating magnetic field is set to rotate at a rotating speed of not more than 5 Hz.
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Accused Products
Abstract
A capsule medical apparatus inserted in the body cavity includes a spiral projected portion on the outer peripheral surface of a body cavity inserting portion. The pitch, height, and cross section of the projected portion and the like are set to have proper values and shapes suitable to the advance thereof. The body cavity inserting portion has a magnet. An external magnetic guiding device applies a rotating magnetic field to the magnet and the magnetic torque acts on a magnet for rotation. Thus, the medical apparatus stably advances.
49 Citations
20 Claims
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1. A medical apparatus, comprising:
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a body cavity inserting portion which is inserted into a body and which has a thrust-generating spiral projected portion in contact with a body cavity; and rotating device for rotating the thrust-generating spiral projected portion, wherein the rotating device includes; a magnetic field generating device arranged outside the body for generating a rotating magnetic filed; and a magnet arranged inside the body cavity inserting portion and driven to rotate by the rotating magnetic field; the thrust-generating spiral projected portion is set to have a shape with a projection height from not less than 0.3 mm to not more than 3 mm; and the rotating magnetic field is set to rotate at a rotating speed of not more than 5 Hz. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification