Medical device
First Claim
1. A medical apparatus inserted in a body cavity, comprising a body cavity inserting portion having a projected portion that is spiral-shaped for generating thrust in contact with the body cavity, wherein the projected portion has the structure which satisfies at least one of five conditions including the pitch of 10 mm or more, the height of 0.3 mm or more and 3 mm or less, the cross-sectional shape that is substantially semi-circular or substantially trapezoidal, the inclining angle of an end portion of 45°
- or less, and the number of spirals that is 2 or more and 10 or less.
2 Assignments
0 Petitions
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 36 for rotation. Thus, the medical apparatus stably advances.
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Citations
20 Claims
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1. A medical apparatus inserted in a body cavity, comprising a body cavity inserting portion having a projected portion that is spiral-shaped for generating thrust in contact with the body cavity, wherein
the projected portion has the structure which satisfies at least one of five conditions including the pitch of 10 mm or more, the height of 0.3 mm or more and 3 mm or less, the cross-sectional shape that is substantially semi-circular or substantially trapezoidal, the inclining angle of an end portion of 45° - or less, and the number of spirals that is 2 or more and 10 or less.
- View Dependent Claims (3, 4, 10, 12, 13, 14, 15, 16, 17, 18)
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2. A medical apparatus inserted in a body cavity, comprising a body cavity inserting portion having a projected portion that is spiral-shaped for generating thrust in contact with the body cavity, wherein
the projected portion has the structure which satisfies at least two of five conditions including the pitch of 10 mm or more, the height of 0.3 mm or more and 3 mm or less, the cross-sectional shape that is substantially semi-circular or substantially trapezoidal, the inclining angle of an end portion of 45° - or less, and the number of spirals that is 2 or more and 10 or less.
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5. A medical apparatus comprising a body cavity inserting portion having at least a magnet and a projected portion that is spiral-shaped for generating thrust so as to rotate and advance the body cavity inserting portion in a body cavity by receiving a rotating magnetic field,
wherein the projected portion has the structure which satisfies at least one of five conditions including the pitch of 10 mm or more, the height of 0.3 mm or more and 3 mm or less, the cross-sectional shape that is substantially semi-circular or substantially trapezoidal, the inclining angle of an end portion of 45° - or less, and the number of spirals that is 2 or more and 10 or less.
- View Dependent Claims (6, 7, 8, 11)
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9. A medical apparatus comprising a body cavity inserting portion having at least a thrust generating unit and a magnet so as to rotate and advance the body cavity inserting portion in a body cavity by receiving a rotating magnetic field generated by a magnetic field generating device,
wherein a magnetic torque, as product of the rotating magnetic field generated by the magnetic field generating device and the magnetic moment generated by the body cavity inserting portion, is preset to 0.06 to 1 cNm.
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19. A control program for moving a medical apparatus inserted in a body cavity having a magnet which is rotated by receiving a rotating magnetic field and a projected portion which is spiral-shaped for generating thrust in contact with the body cavity, the control program comprising:
a magnetic field control step of controlling the rotating magnetic field so that the rotating velocity of medical apparatus is five rotations or less per second, or the magnetic torque acting on the magnet is not over 1 cNm. - View Dependent Claims (20)
Specification