发明名称 |
Pulse detecting device and ultrasound diagnostic apparatus |
摘要 |
There is provided a pulse detecting device which resists fluctuations in the quality by locating an ultrasound transmitting piezoelectric element and an ultrasound receiving piezoelectric element with high precision. In the pulse detecting device, a detection sensitivity of the pulse is improved. A transmitting piezoelectric element and a receiving piezoelectric element are fixed onto a substrate by electrodes. The transmitting piezoelectric element is excited in response to an inputted drive voltage signal to generate an ultrasound and transmits the generated ultrasound to a living body. The receiving piezoelectric element receives an echo produced by reflecting the ultrasound transmitted into the living body by a blood flow of the living body and converts it into a voltage signal. A processing arithmetic unit compares the frequency of the ultrasound generated by the transmitting piezoelectric element with that of the echo received in the receiving piezoelectric element to thereby detect a pulse.
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申请公布号 |
US2002045829(A1) |
申请公布日期 |
2002.04.18 |
申请号 |
US20010893392 |
申请日期 |
2001.06.28 |
申请人 |
NAKAMURA TAKAHIKO;SHINOGI MASATAKA;MURAMATSU HIROYUKI;ODAGIRI HIROSHI |
发明人 |
NAKAMURA TAKAHIKO;SHINOGI MASATAKA;MURAMATSU HIROYUKI;ODAGIRI HIROSHI |
分类号 |
A61B5/0245;A61B5/024;A61B8/02;B06B1/06;H04R17/00;(IPC1-7):A61B8/06 |
主分类号 |
A61B5/0245 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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