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Wide band via-skull Doppler system and method for frequency conversion cerebrovascular blood flow rate detection

A Doppler system and transcranial technology, applied in blood flow measurement devices and other directions, can solve the problems of inconvenient use and high cost, and achieve the effect of convenient clinical operation and low cost

Active Publication Date: 2007-02-28
SHENZHEN DELICA MEDICAL EQUIP CO LTD +1
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a wide-band transcranial Doppler system with adjustable frequency, which can be connected with a wide-band probe to transmit pulse signals of different frequencies, so as to solve the problem of high cost of existing multi-frequency TCD equipment. Inconvenient use

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  • Wide band via-skull Doppler system and method for frequency conversion cerebrovascular blood flow rate detection
  • Wide band via-skull Doppler system and method for frequency conversion cerebrovascular blood flow rate detection
  • Wide band via-skull Doppler system and method for frequency conversion cerebrovascular blood flow rate detection

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Embodiment Construction

[0034] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0035] As shown in Figure 2, the broadband transcranial Doppler system of the present invention is composed of a signal acquisition system, a PC interface (specifically, a USB module) and a PC system, and the signal acquisition system completes the acquisition of intracranial blood flow signals together with the probe . The signal acquisition system includes: a frequency generator, a timing control module, a transmitter and a wideband receiver, and a demodulation sampling conversion module composed of a demodulation unit, a sample / hold circuit and an A / D conversion unit. The timing control module is mainly used to generate various control signals, modulate the square wave carrier signal output by the frequency generator into a pulse wave with the same frequency as the carrier signal, and exchange data and instructions with the PC system; the pulse wave out...

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Abstract

The invention discloses a broad-frequency skull Doppler system and frequency conversion brain vessel blood speed detecting method, which comprises the following parts: frequency generator, time-sequence control mode, emitter, receiver, demodulation gathering conversing mode and PC system to communicate time-sequence control mode through PC interface, wherein the frequency generator can produce wave-carrying signal with multiple preset frequencies, which controls frequency generator to output different frequency wave-carrying signal.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a frequency-adjustable broadband transcranial Doppler (TCD, Transcranial Doppler) system, and a method for frequency-variable detection of cerebral blood flow velocity. Background technique [0002] Transcranial Doppler (TCD) is a device that uses the principle of ultrasound Doppler to non-invasively detect the blood flow velocity and distribution of cerebral vessels, and is especially valuable for checking the blood flow of the main arteries that supply blood to the brain. It has been widely used in hospital clinics and has become an indispensable and important tool for diagnosing the etiology, pathogenesis, treatment observation and prognosis of a series of cerebrovascular diseases. [0003] The transcranial Doppler instrument includes a transcranial Doppler host and a probe (transducer). The carrier is modulated by the transmission control signal to obtain a fixed frequency (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/06
Inventor 陈思平汪凯曾益民王先群王筱毅
Owner SHENZHEN DELICA MEDICAL EQUIP CO LTD
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