Automatic blood pressure measuring apparatus
First Claim
1. An automatic blood pressure measuring apparatus comprising;
- an inflatable cuff having an elongate configuration, said inflatable cuff being adapted to be wound around a body portion of a subject, for pressing an arterial vessel of the subject via a body surface over said arterial vessel;
first detecting means for detecting at least one proximal arterial sound produced from said arterial vessel as the pressing force of said inflatable cuff applied to the arterial vessel is varied, said first detecting means being located in a proximal end area, as viewed in a direction of width of said inflatable cuff, of an inner surface of the inflatable cuff which surface contacts said body portion of the subject;
second detecting means for detecting at least one Korotkoff sound produced from said arterial vessel as the pressing force of said inflatable cuff applied to the arterial vessel is varied, said second detecting means being located in a middle area of said inner surface of the inflatable cuff as viewed in said direction of width of the inflatable cuff, said second detecting means being aligned with said first detecting means in the direction of width of the inflatable cuff;
collecting means for collecting at least one Korotkoff sound, said collecting means collecting, when said first detecting means detects each of said at least one proximal arterial sound, a sound detected by said second detecting means between a first and a second time point which are apart from each other and which are subsequent by respective first and second time lengths to the time of detection of said each of the at least one proximal arterial sound, as a Korotkoff sound corresponding to said each of the at least one proximal arterial sound; and
determining means for determining at least one blood pressure value of the subject based on the collected at least one Korotkoff sound.
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Accused Products
Abstract
An automatic blood pressure measuring apparatus, including an inflatable cuff having an elongate configuration, the inflatable cuff being wound around a body portion of a subject, for pressing an arterial vessel of the subject via a body surface over the arterial vessel, a detecting device for detecting at least one Korotkoff sound produced from the arterial vessel as the pressing force of the inflatable cuff applied to the arterial vessel is varied, and a determining device for determining at least one blood pressure value of the subject based on the detected at least one Korotkoff sound, the detecting device being located in a middle area, as viewed in a direction of width of the inflatable cuff, of an inner surface of the inflatable cuff which surface contacts the body portion of the subject.
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Citations
14 Claims
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1. An automatic blood pressure measuring apparatus comprising;
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an inflatable cuff having an elongate configuration, said inflatable cuff being adapted to be wound around a body portion of a subject, for pressing an arterial vessel of the subject via a body surface over said arterial vessel; first detecting means for detecting at least one proximal arterial sound produced from said arterial vessel as the pressing force of said inflatable cuff applied to the arterial vessel is varied, said first detecting means being located in a proximal end area, as viewed in a direction of width of said inflatable cuff, of an inner surface of the inflatable cuff which surface contacts said body portion of the subject; second detecting means for detecting at least one Korotkoff sound produced from said arterial vessel as the pressing force of said inflatable cuff applied to the arterial vessel is varied, said second detecting means being located in a middle area of said inner surface of the inflatable cuff as viewed in said direction of width of the inflatable cuff, said second detecting means being aligned with said first detecting means in the direction of width of the inflatable cuff; collecting means for collecting at least one Korotkoff sound, said collecting means collecting, when said first detecting means detects each of said at least one proximal arterial sound, a sound detected by said second detecting means between a first and a second time point which are apart from each other and which are subsequent by respective first and second time lengths to the time of detection of said each of the at least one proximal arterial sound, as a Korotkoff sound corresponding to said each of the at least one proximal arterial sound; and determining means for determining at least one blood pressure value of the subject based on the collected at least one Korotkoff sound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An automatic blood pressure measuring apparatus comprising:
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an inflatable cuff having an elongate configuration, said inflatable cuff being adapted to be wound around a body portion of a subject, for pressing an arterial vessel of the subject via a body surface over said arterial vessel; first detecting means for detecting at least one proximal arterial sound produced from said arterial vessel as the pressing force of said inflatable cuff applied to the arterial vessel is varied, said first detecting means comprising a plurality of first sensing elements which are arranged in a proximal end area, as viewed in a direction of width of the inflatable cuff, of an inner surface of the inflatable cuff which surface contacts said body portion of the subject, along a direction of length of the inflatable cuff which direction intersects the arterial vessel; second detecting means for detecting at least one Korotkoff sound produced from said arterial vessel, concurrently with the detection of the at least one proximal arterial sound by said first detecting means, said second detecting means comprising a plurality of second sensing elements which are arranged in a middle area, as viewed in the direction of width of the inflatable cuff, of said inner surface of said inflatable cuff along the direction of length of the inflatable cuff, such that each of said second sensing elements is aligned with a corresponding one of said plurality of first sensing elements in the direction of width of the inflatable cuff; selecting means for selecting one of said plurality of first sensing elements such that the sound detected by the selected first sensing element has a greatest magnitude of all the sounds detected by the plurality of first sensing elements, and selecting one of said plurality of second sensing elements such that the selected second sensing element is aligned with said selected first sensing element in the direction of width of said inflatable cuff; collecting means for collecting at least one Korotkoff sound, said collecting means collecting, when said selected first sensing element detects each of said at least one proximal arterial sound, a sound detected by said selected second sensing element between a first and a second time point which are apart from each other and which are subsequent by respective first and second time lengths to the time of detection of said each of the at least one proximal arterial sound, as a Korotkoff sound corresponding to said each of the at least one proximal arterial sound; and determining means for determining at least one blood pressure value of the subject based on the thus collected at least one Korotkoff sound. - View Dependent Claims (11, 12, 13, 14)
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Specification