Medical instrument and medical equipment for treatment, and rotational handle device
First Claim
1. A medical instrument for treatment in a tubular form including a tube for insertion by guiding of a medical guide wire inside, said medical instrument comprising:
- said tube including;
a helical coil of metal;
a tubular tip of metal secured to an end of said helical coil; and
a cutting head of a blade shape, formed on said tubular tip, for cutting a lesion upon being rotated.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotational handle device rotates a medical instrument for vascular treatment in a tubular form including a tube for insertion by guiding of a medical guide wire inside. The tube includes a helical coil of metal, a tubular tip of metal secured to an end of the helical coil, and a cutting head of a blade shape, formed on the tubular tip, for cutting a lesion upon being rotated. A first rotatable tube rotates with the tube, and has a wire lumen. An externally operable second rotatable tube is secured to the first rotatable tube in an axial direction. An over torque preventing mechanism is disposed between the first and second rotatable tubes, and causes the second rotatable tube to rotate free from the first rotatable tube upon application of torque higher than the predetermined level to the second rotatable tube.
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Citations
30 Claims
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1. A medical instrument for treatment in a tubular form including a tube for insertion by guiding of a medical guide wire inside, said medical instrument comprising:
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said tube including;
a helical coil of metal;
a tubular tip of metal secured to an end of said helical coil; and
a cutting head of a blade shape, formed on said tubular tip, for cutting a lesion upon being rotated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A rotational handle device for rotating a medical instrument for treatment in a tubular form including a tube for insertion by guiding of a medical guide wire inside, said rotational handle device comprising:
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wherein said tube includes a helical coil of metal, a tubular tip of metal secured to an end of said helical coil, and a cutting head of a blade shape, formed on said tubular tip, for cutting a lesion upon being rotated;
a first rotatable tube for rotating with said tube, said first rotatable tube having a wire lumen for receiving insertion of said medical guide wire;
an externally operable second rotatable tube secured to said first rotatable tube in an axial direction;
an over torque preventing mechanism, disposed between said first and second rotatable tubes, for transmitting rotation of said second rotatable tube to said first rotatable tube upon application of torque equal to or lower than a predetermined level to said second rotatable tube, and for causing said second rotatable tube to rotate free from said first rotatable tube upon application of torque higher than said predetermined level to said second rotatable tube. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A medical equipment for treatment, comprising:
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a medical instrument for treatment in a tubular form including a tube for insertion by guiding of a medical guide wire inside;
wherein said tube includes a helical coil of metal, a tubular tip of metal secured to an end of said helical coil, and a cutting head of a blade shape, formed on said tubular tip, for cutting a lesion upon being rotated;
a first rotatable tube for rotating with said tube, said first rotatable tube having a wire lumen for receiving insertion of said medical guide wire;
a connector for removably connecting said tube with said first rotatable tube;
an externally operable second rotatable tube, secured to said first rotatable tube in an axial direction, for rotationally operating said medical instrument on a proximal side; and
an over torque preventing mechanism, disposed between said first and second rotatable tubes, for transmitting rotation of said second rotatable tube to said first rotatable tube upon application of torque equal to or lower than a predetermined level to said second rotatable tube, and for causing said second rotatable tube to rotate free from said first rotatable tube upon application of torque higher than said predetermined level to said second rotatable tube.
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20. A guide wire fitted medical equipment for treatment, comprising:
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a medical instrument for treatment in a tubular form including a tube;
wherein said tube includes a helical coil of metal, a tubular tip of metal secured to an end of said helical coil, and a cutting head of a blade shape, formed on said tubular tip, for cutting a lesion upon being rotated;
a first rotatable tube for rotating with said tube, said first rotatable tube having a wire lumen;
a connector for removably connecting said tube with said first rotatable tube;
an externally operable second rotatable tube, secured to said first rotatable tube in an axial direction, for rotationally operating said medical instrument on a proximal side;
an over torque preventing mechanism, disposed between said first and second rotatable tubes, for transmitting rotation of said second rotatable tube to said first rotatable tube upon application of torque equal to or lower than a predetermined level to said second rotatable tube, and for causing said second rotatable tube to rotate free from said first rotatable tube upon application of torque higher than said predetermined level to said second rotatable tube;
a medical guide wire, having a helical coil on at least a distal end thereof, for guiding insertion of said tube and said first rotatable tube thereabout;
wherein a direction of winding of said helical coil of said medical instrument is reverse to a direction of winding of said helical coil of said medical guide wire.
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21. A rotational handle device for rotationally operating a medical instrument for treatment on a proximal side, said medical instrument in a tubular form including a tube for insertion by guiding of a medical guide wire inside, wherein said tube includes a helical coil of metal, and a tip secured to an end of said helical coil, said rotational handle device comprising:
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a first rotatable tube for rotating with said tube, said first rotatable tube having a wire lumen for receiving insertion of said medical guide wire;
an externally operable second rotatable tube secured to said first rotatable tube in an axial direction;
an over torque preventing mechanism, disposed between said first and second rotatable tubes, for transmitting rotation of said second rotatable tube to said first rotatable tube upon application of torque equal to or lower than a predetermined level to said second rotatable tube, and for causing said second rotatable tube to rotate free from said first rotatable tube upon application of torque higher than said predetermined level to said second rotatable tube. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A medical equipment for treatment, comprising:
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a medical instrument for treatment in a tubular form including a tube for insertion by guiding of a medical guide wire inside, wherein said tube includes a helical coil of metal, and a tip secured to an end of said helical coil;
a first rotatable tube for rotating with said tube, said first rotatable tube having a wire lumen for receiving insertion of said medical guide wire;
a connector for removably connecting said tube with said first rotatable tube;
an externally operable second rotatable tube, secured to said first rotatable tube in an axial direction, for rotationally operating said medical instrument on a proximal side; and
an over torque preventing mechanism, disposed between said first and second rotatable tubes, for transmitting rotation of said second rotatable tube to said first rotatable tube upon application of torque equal to or lower than a predetermined level to said second rotatable tube, and for causing said second rotatable tube to rotate free from said first rotatable tube upon application of torque higher than said predetermined level to said second rotatable tube.
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30. A guide wire fitted medical equipment for treatment, comprising:
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a medical instrument for treatment in a tubular form including a tube, wherein said tube includes a helical coil of metal, and a tip secured to an end of said helical coil;
a first rotatable tube for rotating with said tube, said first rotatable tube having a wire lumen;
a connector for removably connecting said tube with said first rotatable tube;
an externally operable second rotatable tube, secured to said first rotatable tube in an axial direction, for rotationally operating said medical instrument on a proximal side;
an over torque preventing mechanism, disposed between said first and second rotatable tubes, for transmitting rotation of said second rotatable tube to said first rotatable tube upon application of torque equal to or lower than a predetermined level to said second rotatable tube, and for causing said second rotatable tube to rotate free from said first rotatable tube upon application of torque higher than said predetermined level to said second rotatable tube;
a medical guide wire, having a helical coil on at least a distal end thereof, for guiding insertion of said tube and said first rotatable tube thereabout;
wherein a direction of winding of said helical coil of said medical instrument is reverse to a direction of winding of said helical coil of said medical guide wire.
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Specification