CN203828968U - Detection device of color Doppler ultrasonic diagnostic apparatus - Google Patents
Detection device of color Doppler ultrasonic diagnostic apparatus Download PDFInfo
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- CN203828968U CN203828968U CN201420201274.2U CN201420201274U CN203828968U CN 203828968 U CN203828968 U CN 203828968U CN 201420201274 U CN201420201274 U CN 201420201274U CN 203828968 U CN203828968 U CN 203828968U
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- doppler
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Abstract
The utility model discloses a detection device of a color Doppler ultrasonic diagnostic apparatus. The detection device comprises an outer shell, a liquid storage tank, a buffering tank, a pump, a membrane and a flow meter, wherein the liquid storage tank, the buffering tank, the pump, the membrane and the flow meter are mounted in the outer shell, the membrane is mounted at the bottom of the outer shell through a membrane support, the flow meter is mounted at the bottom of the outer shell through a flow meter support, a device cover is fixed on the outer shell after all components are mounted well, operation of the whole device is controlled through an operation keyboard on the outer shell, and displayed content is displayed through a liquid crystal screen.
Description
Technical field
This utility model relates to a kind of colorful Doppler ultrasound diagnostic apparatus checkout gear.
Background technology
The checkout gear of the color Doppler echocardiography diagnostic apparatus outside Current Domestic is mainly with the imitative blood flow of single pump control, suspended body flowmeter is measured imitative velocity of blood flow, manually the rotating speed of control pump is controlled the flow velocity in body film detection bodies of imitative blood, thus the accuracy of sense colors ultrasonic Doppler method diagnostic equipment.But existing checkout gear exists following problem:
1. detection time is not long; 2. detect uncertainty large; 3. low speed blood flow is unstable; 4. flow-speed measurement scope is low; 5. pumping system anti-interference is poor; 6. measuring device is bulky, carrying inconvenience; 7. price high maintenance is poor.
In addition, in ultrasonic detection device, be placed on the ultrasonic pulse that the piezoelectric vibrator in ultrasonic detector sends and be transmitted in object to be detected, the ultrasonic reflections ripple that the acoustic impedance difference of object to be detected produces is received by piezoelectric vibrator, on display, shows.But according to current technology, the above-mentioned ultrasonic reflections ripple being received by piezoelectric vibrator easily produces interaction noise, thereby affects the reliability of Doppler frequency spectrum detection technique.
The raising along with the development of Doppler's checkout gear, both at home and abroad the calibrating of Doppler detector being required, is badly in need of that a kind of automaticity is higher, convenient and swift, accurate stable, ultrasonic Doppler method diagnostic equipment checkout gear that cost performance is high at present.
Utility model content
In order to address the above problem, the utility model proposes following scheme:
A kind of colorful Doppler ultrasound diagnostic apparatus checkout gear, it is characterized in that, this checkout gear comprises shell and fluid reservoir, surge tank, the pump housing, body film, effusion meter is in the enclosure installed, wherein body film is arranged on outer casing bottom by body membrane support, effusion meter is arranged on outer casing bottom by effusion meter support, complete machine covers and after installation, is fixed on shell, and the operation of complete machine is by the operation keyboard control on shell, and displaying contents shows by liquid crystal display screen;
Described checkout gear includes ultrasonic detector, and it has multiple piezoelectric vibrators, sends ultrasound wave to detected body, receives the echo of detected body; , for there are the multiple driving signals corresponding to above-mentioned multiple piezoelectric vibrators in drive division; Control part, being used for controlling drive division switches at high-power mode and low-power mode respectively, and definite detector running time under high-power mode and low-power mode respectively, wherein under high-power mode, drive the amplitude of signal high, under low-power mode, drive the amplitude of signal low; Doppler signal detecting portion, for detecting Doppler signal according to above-mentioned echo;
Determination portion, it,, by Doppler signal is carried out to spectrum analysis, obtains the power spectrum of this signal, and by the power Spectral Estimation noise average power of described Doppler signal;
Noise suppressed digital filter, it is determined the filter coefficient of this wave filter by described power spectrum and noise average power; Thereby described Doppler signal is carried out to time-variable filtering noise reduction.
Checkout gear good stability of the present utility model, signal to noise ratio is high.By controlling the driving method of piezoelectric vibrator in colorful Doppler ultrasound diagnostic apparatus checkout gear, the Doppler frequency spectrum that the supersonic Doppler composition can highly sensitive observation obtaining from detected body generates or the observation part of frequency spectrum data, simultaneously in observing heating restriction or output power limit, reduce the interference of noise to effective detection signal, significantly improve the signal to noise ratio detecting.
Brief description of the drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, this utility model is described in further detail, wherein:
Fig. 1 is this utility model colorful Doppler ultrasound diagnostic apparatus checkout gear schematic diagram
Fig. 2 is this utility model colorful Doppler ultrasound diagnostic apparatus checkout gear internal structure
Fig. 3 is this utility model colorful Doppler ultrasound diagnostic apparatus checkout gear fluid reservoir overall diagram
Fig. 4 is this utility model colorful Doppler ultrasound diagnostic apparatus checkout gear liquid flow figure
Reference numeral: 1, complete machine lid, 2, shell, 3, fluid reservoir, 4, the pump housing, 5, liquid crystal display screen, 6, body film, 7, effusion meter, 8, pump head A, 9, pump head B, 10, body membrane support, 11, effusion meter support, 3A, fluid reservoir import terminal, 3B, fluid reservoir outlet terminal meet pump head A, and 3C, fluid reservoir outlet terminal meet pump head B, 3D, surge tank outlet terminal, 3E, surge tank import terminal meet pump head A, and 3F, surge tank import terminal meet pump head B
Detailed description of the invention
The all parts of colorful Doppler ultrasound diagnostic apparatus checkout gear of the present utility model are arranged in shell 2, as Fig. 1, inner mounting structure is as Fig. 2, and wherein body film 6 is arranged on shell 2 bottoms by body membrane support 10, and effusion meter 7 is arranged on shell 2 bottoms by effusion meter support 11.Complete machine lid 1 is fixed on shell 2 after installation.It is to use by the opening on complete machine lid 1 that complete machine uses.Fixing operation keyboard control in the operation housing 2 of complete machine, displaying contents shows by liquid crystal display screen 5.
Colorful Doppler ultrasound diagnostic apparatus checkout gear workflow is as shown in Fig. 4.After start, the flow velocity arranging according to system is selected suitable pump head (pump head A8 or pump head B9) automatically, pump head rotates with the speed arranging, pump head is squeezed in the silica gel tube in pump head by rotation, liquid is due to the extruding to pipeline of pump head, liquid is from the outlet (3B of fluid reservoir, fluid reservoir outlet terminal meets pump head A or 3C, fluid reservoir outlet terminal meets pump head B) flow out, flow to surge tank import (3E by the extruding of pump head, surge tank import terminal meets pump head A, 3F, surge tank import terminal meets pump head B), liquid flows out from surge tank outlet terminal 3D by surge tank, enter effusion meter 7, enter body film 6 from effusion meter 7 out, the fluid reservoir import terminal 3A that out flows into fluid reservoir 3 from body film 6 completes circulation.
In cyclic process, instantaneous collection flow velocity is passed to control system by effusion meter 7, control system contrasts default flow velocity and actual flow velocity, and information is passed to the pump housing 4, and the pump housing carries out the adjustment of rotational speed of pump head A8 or pump head B9 according to the requirement of control system transmission.When thereby rotation speed change causes the variation of flow rate of liquid in pipeline, effusion meter 7 constantly transfers data to system, and system is carried out the adjustment of rotating speed to the pump housing 4, and above process repeatedly, until flow velocity reaches default numerical value.Through adjustment after a while, it is stable that system reaches, just can be by mobile colorful Doppler ultrasound diagnostic apparatus is detected of body film 6 interior liquid.
In addition, checkout gear described in the utility model includes ultrasonic detector, and it has multiple piezoelectric vibrators, sends ultrasound wave to detected body, receives the echo of detected body; , for there are the multiple driving signals corresponding to above-mentioned multiple piezoelectric vibrators in drive division; Control part, being used for controlling drive division switches at high-power mode and low-power mode respectively, and definite detector running time under high-power mode and low-power mode respectively, wherein under high-power mode, drive the amplitude of signal high, under low-power mode, drive the amplitude of signal low; Doppler signal detecting portion, for detecting Doppler signal according to above-mentioned echo;
Determination portion, it,, by Doppler signal is carried out to spectrum analysis, obtains the power spectrum of this signal, and by the power Spectral Estimation noise average power of described Doppler signal;
Noise suppressed digital filter, it is determined the filter coefficient of this wave filter by described power spectrum and noise average power; Thereby described Doppler signal is carried out to time-variable filtering noise reduction.
By adopting above structure, ultrasonic doppler checkout gear of the present utility model can be realized accurate noise reduction, thereby greatly improves accuracy of detection.
The bearing calibration of colorful Doppler ultrasound diagnostic apparatus checkout gear of the present utility model comprises:
1, checkout gear drives imitative blood to move with certain flow rate in blood circulation by peripheral pump, whole blood circulation is the extruding to pipeline by peripheral pump, and imitative blood is finally got back to fluid reservoir by peripheral pump, surge tank, electronic flowmeter, imitative body film from fluid reservoir;
2, when by effusion meter, the flow rate information of collection is fed back to control system by electronic flowmeter, system will contrast according to the flow velocity setting in advance and the flow velocity of electronic flowmeter collection, control system is adjusted the rotating speed of peripheral pump according to comparing result, makes in blood circulation flow speed stability in a definite value;
3,, in the process of adjusting at whole flow velocity, system is got off instantaneous value by curve record, and shows in LCDs;
4,, when flow speed stability in unitary closed blood circulation is on default numerical value, imitative blood just, with certain flow velocity long-time steady flow in imitative body film, now just can be examined and determine color Doppler echocardiography detector.
Preferably, the pipeline in unitary closed blood circulation adopts silica gel tube to be connected with pvc pipe.
This utility model adopts system to control two peripheral pumps simultaneously and is used alternatingly, and has effectively expanded the flow rates of this device, thereby has increased the detection range of checkout gear.
This utility model adopts Siemens electronic flowmeter, has not only increased the accuracy of measuring, and expanded the detection range of flow compared with traditional suspended body flowmeter.
This utility model adopts closed cycle system, can guarantee detection time.And ensure that the imitative blood in system uses for a long time.
The Integral design of fluid reservoir of the present utility model and surge tank, has effectively saved the volume of checkout gear.And the frequent test of many times of the volume of surge tank is determined, effectively alleviates the pulse of peripheral pump, and flow rate of liquid is stable.
System of the present utility model adopts Automatic Control, not only reduces adjusting and the personal error of manpower to flow velocity, and the stabilization time of effectively having improved system.
Overall circulation system of the present utility model adopts silica gel tube to be connected with pvc pipe, strengthens the reliability of pipeline, and improves crushing resistance in pipeline.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model this utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of this utility model claim and equivalent technologies thereof, this utility model is also intended to comprise these changes and modification interior.
Claims (1)
1. a colorful Doppler ultrasound diagnostic apparatus checkout gear, it is characterized in that, this checkout gear comprises shell and fluid reservoir, surge tank, the pump housing, body film, effusion meter is in the enclosure installed, wherein body film is arranged on outer casing bottom by body membrane support, effusion meter is arranged on outer casing bottom by effusion meter support, and complete machine covers and after installation, is fixed on shell, and the operation of complete machine is by the operation keyboard control on shell, displaying contents shows by liquid crystal display screen
Described checkout gear includes ultrasonic detector, and it has multiple piezoelectric vibrators, sends ultrasound wave to detected body, receives the echo of detected body; , for there are the multiple driving signals corresponding to above-mentioned multiple piezoelectric vibrators in drive division; Control part, being used for controlling drive division switches at high-power mode and low-power mode respectively, and definite detector running time under high-power mode and low-power mode respectively, wherein under high-power mode, drive the amplitude of signal high, under low-power mode, drive the amplitude of signal low; Doppler signal detecting portion, for detecting Doppler signal according to above-mentioned echo;
Determination portion, it,, by Doppler signal is carried out to spectrum analysis, obtains the power spectrum of this signal, and by the power Spectral Estimation noise average power of described Doppler signal;
Noise suppressed digital filter, it is determined the filter coefficient of this wave filter by described power spectrum and noise average power; Thereby described Doppler signal is carried out to time-variable filtering noise reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201274.2U CN203828968U (en) | 2014-04-24 | 2014-04-24 | Detection device of color Doppler ultrasonic diagnostic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201274.2U CN203828968U (en) | 2014-04-24 | 2014-04-24 | Detection device of color Doppler ultrasonic diagnostic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203828968U true CN203828968U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420201274.2U Expired - Fee Related CN203828968U (en) | 2014-04-24 | 2014-04-24 | Detection device of color Doppler ultrasonic diagnostic apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN203828968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105147320A (en) * | 2015-10-09 | 2015-12-16 | 北京市医疗器械检验所 | Ultrasonic Doppler intra-operative blood flow simulation system and simulation method thereof |
-
2014
- 2014-04-24 CN CN201420201274.2U patent/CN203828968U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105147320A (en) * | 2015-10-09 | 2015-12-16 | 北京市医疗器械检验所 | Ultrasonic Doppler intra-operative blood flow simulation system and simulation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20170424 |