Pulse wave detecting apparatus having placement-condition detecting means
First Claim
1. A pulse wave detecting apparatus comprising:
- a housing which is adapted to be placed on a body surface of a subject;
a pulse wave sensor supported by said housing, for detecting a pulse wave produced from an artery of said subject;
pressing means supported by said housing, for pressing said pulse wave sensor against said body surface so as to detect said pulse wave;
control means for determining an optimum pressing force of said pressing means applied to said pulse wave sensor, based on the pulse wave detected by said pulse wave sensor as the pressing force of said pressing means is varied, and maintaining the optimum pressing force;
detecting means for detecting whether or not said housing is placed on said body surface of said subject, said detecting means generating a placement signal when detecting that said housing is placed on said body surface; and
inhibiting means for inhibiting said pressing means from pressing said pulse wave sensor, when said placement signal is not generated by said detecting means.
2 Assignments
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Accused Products
Abstract
A pulse wave detecting apparatus having a housing which is placed on a body surface of a subject such that the housing is aligned with an artery of the subject via the body surface, a pulse wave sensor accommodated in the housing, the pulse wave sensor being pressed against the body surface for detecting pulse wave produced from the artery, and a pressing device supported by the housing, the pressing means pressing the pulse wave sensor against the body surface with an optimum pressing force, the optimum pressing force being determined based on pulse wave signal produced by the pulse wave sensor while the pressing force of the pressing means is varied, the apparatus including a detecting device for detecting whether or not the housing has been placed on the body surface of the subject.
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Citations
7 Claims
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1. A pulse wave detecting apparatus comprising:
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a housing which is adapted to be placed on a body surface of a subject; a pulse wave sensor supported by said housing, for detecting a pulse wave produced from an artery of said subject; pressing means supported by said housing, for pressing said pulse wave sensor against said body surface so as to detect said pulse wave; control means for determining an optimum pressing force of said pressing means applied to said pulse wave sensor, based on the pulse wave detected by said pulse wave sensor as the pressing force of said pressing means is varied, and maintaining the optimum pressing force; detecting means for detecting whether or not said housing is placed on said body surface of said subject, said detecting means generating a placement signal when detecting that said housing is placed on said body surface; and inhibiting means for inhibiting said pressing means from pressing said pulse wave sensor, when said placement signal is not generated by said detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification