Pressure pulse wave detecting apparatus
First Claim
1. An apparatus for detecting a pressure pulse wave from a living subject, comprising:
- a pressure pulse wave sensor which detects a pressure pulse wave which is produced from an artery of the subject;
a pressing device which presses said sensor against the artery via a body surface of the subject;
a position changing device which moves said sensor and thereby changes a position of the sensor relative to the artery in a direction of width of the artery; and
a control device which determines, based on the pressure pulse wave detected by said sensor, an optimum pressing position of the sensor relative to the artery where the sensor is pressed against the artery by said pressing device, and controls said position changing device to position the sensor at said optimum pressing position,said control device comprising;
moving means for controlling said position changing device to move said sensor relative to the artery while the sensor is pressed, with a predetermined pressing force, on the body surface by said pressing device,optimum-pressing-position determining means for determining said optimum pressing position of said sensor based upon the pressure pulse wave detected by the sensor while the sensor is pressed with said predetermined pressing force on the body surface by said pressing device and is moved relative to the artery by said position changing device under control of said moving means;
stopping means for controlling said position changing device to stop moving said sensor which is being pressed with said predetermined pressing force on the body surface, when said optimum pressing position of the sensor is determined by said optimum-pressing-position determining means, andoptimum-pressing-force determining means for increasing the pressing force of said pressing device from said predetermined pressing force to an increased pressing force and determining an optimum pressing force of said pressing device applied to the artery of the subject via the body surface, based on the pressure pulse wave detected by said sensor stopped at said optimum pressing position while the pressing force of said pressing device is increased from said predetermined pressing force to said increased pressing force.
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Accused Products
Abstract
An apparatus for detecting a pressure pulse wave from a living subject, including a pressure pulse wave sensor which detects a pressure pulse wave which is produced from an artery of the subject, a pressing device which presses the sensor against the artery via a body surface of the subject, a position changing device which moves the sensor and thereby changes a position of the sensor relative to the artery in a direction of width of the artery, and a control device which determines, based on the pulse wave detected by the sensor, an optimum pressing position of the sensor where the sensor is pressed against the artery by the pressing device, and controls the position changing device to position the sensor at the optimum pressing position, the control device functioning as a moving device for controlling the position changing device to move the sensor relative to the artery while the sensor is pressed on the body surface by the pressing device, a determining device for determining the optimum pressing position of the sensor based on the pressure pulse wave detected by the sensor while the sensor is pressed by the pressing device and is moved by the position changing device under control of the moving device, and a stopping device for controlling the position changing device to stop moving the sensor when the optimum pressing position of the sensor is determined by the determining device.
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Citations
11 Claims
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1. An apparatus for detecting a pressure pulse wave from a living subject, comprising:
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a pressure pulse wave sensor which detects a pressure pulse wave which is produced from an artery of the subject; a pressing device which presses said sensor against the artery via a body surface of the subject; a position changing device which moves said sensor and thereby changes a position of the sensor relative to the artery in a direction of width of the artery; and a control device which determines, based on the pressure pulse wave detected by said sensor, an optimum pressing position of the sensor relative to the artery where the sensor is pressed against the artery by said pressing device, and controls said position changing device to position the sensor at said optimum pressing position, said control device comprising; moving means for controlling said position changing device to move said sensor relative to the artery while the sensor is pressed, with a predetermined pressing force, on the body surface by said pressing device, optimum-pressing-position determining means for determining said optimum pressing position of said sensor based upon the pressure pulse wave detected by the sensor while the sensor is pressed with said predetermined pressing force on the body surface by said pressing device and is moved relative to the artery by said position changing device under control of said moving means; stopping means for controlling said position changing device to stop moving said sensor which is being pressed with said predetermined pressing force on the body surface, when said optimum pressing position of the sensor is determined by said optimum-pressing-position determining means, and optimum-pressing-force determining means for increasing the pressing force of said pressing device from said predetermined pressing force to an increased pressing force and determining an optimum pressing force of said pressing device applied to the artery of the subject via the body surface, based on the pressure pulse wave detected by said sensor stopped at said optimum pressing position while the pressing force of said pressing device is increased from said predetermined pressing force to said increased pressing force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification