Sensor for intra-corporeal medical device and a method of manufacture
First Claim
1. A sensor attached to a distal end of an intra-corporeal medical device for guiding the medical device by detecting forces applied thereto when the distal end contacts an intra-corporeal tissue, said sensor comprising:
- a chip deformable in accordance with the forces;
a plurality of strain gauges located on said chip for issuing signals corresponding to said deformation of the chip, wherein said forces are detected in accordance with said signals;
a force transmitter attached to the distal end of the device at a location more distal than said chip for transmitting said forces to said chip; and
a cover that covers said chip, strain gauges and force transmitter and that gives a tapered shape to said distal end, wherein said chip comprises;
a base located at said distal end of the device;
a pole standing on said base; and
a sensing plate attached to a distal end of said pole, wherein said strain gauges are provided on said sensing plate.
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Accused Products
Abstract
A sensor mounted on the distal end of an intra-corporeal catheter detects pressure applied thereto. The sensor includes a chip that is deformable in accordance with pressure applied thereto, strain gauges mounted on the chip, a sensing plate, a projection, a cap and a tube. A cover covers the chip, the sensing plate, the projection and the cap and gives a smooth tapered shape to the catheter'"'"'s distal end. The projection and the cap transmit pressure applied to the catheter'"'"'s distal end to the sensing plate and tilt the sensing plate in accordance with the pressure. The strain gauges issue detection signals according to the degree and the direction of the tilting. The pressure applied to the catheter'"'"'s distal end is detected based on the issued signals.
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Citations
29 Claims
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1. A sensor attached to a distal end of an intra-corporeal medical device for guiding the medical device by detecting forces applied thereto when the distal end contacts an intra-corporeal tissue, said sensor comprising:
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a chip deformable in accordance with the forces;
a plurality of strain gauges located on said chip for issuing signals corresponding to said deformation of the chip, wherein said forces are detected in accordance with said signals;
a force transmitter attached to the distal end of the device at a location more distal than said chip for transmitting said forces to said chip; and
a cover that covers said chip, strain gauges and force transmitter and that gives a tapered shape to said distal end, wherein said chip comprises;
a base located at said distal end of the device;
a pole standing on said base; and
a sensing plate attached to a distal end of said pole, wherein said strain gauges are provided on said sensing plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A sensor attached to a distal end of an intra-corporeal medical device for guiding the medical device by detecting forces applied thereto when the distal end contacts an intra-corporeal tissue, said sensor comprising:
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a generally planar chip deformable in accordance with the forces;
a plurality of strain gauges located on said chip for issuing variable signals corresponding to said deformation of the chip, wherein said forces are detected in accordance with said signals;
a force transmitter attached to the distal end of the device at a location more distal than said chip for transmitting said forces to said chip, wherein said force transmitter has a longitudinal axis that extends perpendicular to the plane of said chip; and
a smooth cover that covers said chip, strain gauges and force transmitter, wherein said chip comprises;
a base located at the distal end of the device;
a pole standing on said base;
a sensing plate attached to a distal end of said pole; and
, wherein said strain gauges are provided on a surface of said sensing plate.- View Dependent Claims (14, 15)
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16. A sensor attached to a distal end of an intra-corporeal medical device for detecting forces applied thereto, said sensor comprising:
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a chip deformable in accordance with the forces;
a plurality of strain gauges located on said chip for issuing signals corresponding to said deformation of the chip, wherein said forces are detected in accordance with said signals;
a force transmitter attached to the distal end of the device at a location more distal than said chip for transmitting said forces to said chip; and
a cover that covers said chip, strain gauges and force transmitter and that gives a tapered shape to said distal end and wherein said chip comprises;
a base located at said distal end of the device;
a pole standing on said base; and
a sensing plate attached to a distal end of said pole, wherein said strain gauges are provided on said sensing plate. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A sensor attached to a distal end of an intra-corporeal medical device for detecting forces applied thereto, said sensor comprising:
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a generally planar chip deformable in accordance with the forces;
a plurality of strain gauges located on said chip for issuing variable signals corresponding to said deformation of the chip, wherein said forces are detected in accordance with said signals;
a force transmitter attached to the distal end of the device at a location more distal than said chip for transmitting said forces to said chip, wherein said force transmitter has a longitudinal axis that extends perpendicular to the plane of said chip; and
a smooth cover that covers said chip, strain gauges and force transmitter, wherein said chip comprises;
a base located at the distal end of the device;
a pole standing on said base; and
a sensing plate attached to a distal end of said pole; and
, wherein said strain gauges are provided on a surface of said sensing plate.
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26. A sensor attached to a distal end of an intra-corporeal medical device for detecting forces applied thereto, said sensor comprising:
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a generally planar chip deformable in accordance with the forces;
a plurality of strain gauges located on said chip for issuing variable signals corresponding to said deformation of the chip, wherein said forces are detected in accordance with said signals;
a force transmitter attached to the distal end of the device at a location more distal than said chip for transmitting said forces to said chip, wherein said force transmitter has a longitudinal axis that extends perpendicular to the plane of said chip; and
a smooth cover that covers said chip, strain gauges and force transmitter, wherein one of said strain gauges is placed in alignment with a first axis to detect forces aligned with the first axis and a second one of said strain gauges is placed in alignment with a second axis orthogonal to said first axis to detect forces aligned with the second axis.
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27. A sensor attached to a distal end of an intra-corporeal medical device for guiding the medical device by detecting forces applied thereto when the distal end contacts an intra-corporeal tissue, said sensor comprising:
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generally planar chip deformable in accordance with the forces;
plurality of strain gauges located on said chip for issuing variable signals corresponding to said deformation of the chip, wherein said forces are detected in accordance with said signals;
a force transmitter attached to the distal end of the device at a location more distal than said chip for transmitting said forces to said chip, wherein said force transmitter has a longitudinal axis that extends perpendicular to the plane of said chip; and
a smooth cover that covers said chip, strain gauges and force transmitter, wherein one of said strain gauges is placed in alignment with a first axis to detect forces aligned with the first axis and a second one of said strain gauges is placed in alignment with a second axis orthogonal to said first axis to detect forces aligned with the second axis. - View Dependent Claims (28, 29)
a base located at the distal end of the device;
a pole standing on said base;
a sensing plate attached to a distal end of said pole; and
, wherein said strain gauges are provided on a surface of said sensing plate.
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Specification