CN201341897Y - Hand-held heart ultrasonic testing instrument - Google Patents
Hand-held heart ultrasonic testing instrument Download PDFInfo
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- CN201341897Y CN201341897Y CNU2009200041877U CN200920004187U CN201341897Y CN 201341897 Y CN201341897 Y CN 201341897Y CN U2009200041877 U CNU2009200041877 U CN U2009200041877U CN 200920004187 U CN200920004187 U CN 200920004187U CN 201341897 Y CN201341897 Y CN 201341897Y
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Abstract
The utility model relates to a hand-held heart ultrasonic testing instrument, which comprises a probe, a transmitting/receiving unit, a user input device, a processing device, a display device, a storage device and a warning device, wherein the processing device is used to response control signals which are output by the user input device to position a scanning position which is corresponding to the maximum value of the blood flow rate along the ultrasonic beam direction on a predetermined scanning path and measure the blood flow rate along the ultrasonic beam direction on the scanning position. The hand-held heart ultrasonic testing instrument can accurately position the scanning position corresponding to a measured object, and measures the main parameters required by ultrasonic testing of the heat on the scanning position. Since image-forming components are not needed, the hand-held heart ultrasonic testing instrument has the advantages of low production cost, simple structure, convenient operation and carrying and the like.
Description
Technical field
This utility model relates to a kind of ultrasound detection instrument, more specifically, relates to a kind of hand-held cardiac ultrasonic detector.
Background technology
It is a kind of inspection method that shows heart, blood vessel structure with ultrasound wave that cardiac ultrasonic detects, and its principle is to detect blood flow state and speed by sound wave, by direction, the different color change of pressure reduction performance of blood flow, and knows the place of focus or anomalous structure.The method safety does not have radioactivity, and the accuracy rate of diagnosis height does not have misery and damage to patient, and check result is timely rapidly, but the repeated multiple times inspection is helpful to a lot of cardiopathic diagnosis.
Fig. 1 is the hardware block diagram of a kind of cardiac ultrasonic detector in the prior art.The basic composition of this ultrasound measuring instrument comprises: keyboard 102, panel interface 104, digital scan converting unit 106, transmitter/receiver unit 108, probe 110, observation monitor 112 and camera unit 114.
Transmitter/receiver unit 108 transmits when electron scanning and emit a control signal to probe, and the received signal from ultrasonic probe carried out high frequency amplification, logarithmic compression and relevant pretreatment by amplification system, and do electron focusing and dynamic focusing control, detection, be sent to digital scan converting unit (DSC) 106 then.In addition, transmitter/receiver unit 108 also transmits the relevant signal of DSC Synchronization Control, by electron focusing or dynamic focusing mode ultrasonic beam is focused on, to improve side direction (laterally) resolving power.
Digital scan converting unit (DSC) 106 mainly comprises A/D converter, image storage and D/A converter.106 pairs of ultrasonic video signals from transmitter/receiver unit 108 of digital scan converting unit (DSC) carry out the A/D conversion process, and the digital information after will changing deposits in the memorizer, constitute an a width of cloth digitized image, ultrasound data in the memorizer is synthetic with character and graph data from keyboard, again through D/A conversion, digital signal is converted to mixed video signal is sent to and observes monitor 112 and camera unit 114 carries out the demonstration of image and literal.That is to say, digital scan converting unit 106 is by digital circuit technique and storage medium, the ultrasound image information that is obtained in the different scanning mode, deposit ultrasound information in by the numerical control integrated circuit storage, the television scanning standard that becomes standard is then carried out the pictograph demonstration.
As shown in Figure 1, this ultrasound measuring instrument need be by image-forming assembly (promptly, digital scan converting unit 106, observation monitor 112 and camera unit 114) carry out ultra sonic imaging, and need to rely on doctor's experience find out the pairing scanning position of measurand, to finish relevant detection.In addition, in order to obtain the higher image of definition, probe 110 needs to use highly dense oscillator, this is because the element number of probe is directly proportional with the ultrasound information line density, and the ultrasound information line is close more, more can reflect the authentic image of checking object, and promptly image is fine and smooth more, lines is just clear more, and granule is in conjunction with just more level and smooth.Generally speaking, the probe that is used for ultra sonic imaging has 128 oscillators or 256 oscillators.Comprehensive above-mentioned situation, this class ultrasound measuring instrument cost is higher, complex structure, and not easy to operate.In addition, repeatedly do this class detection for needs, but be inconvenient to the crowd (as the old people) of hospital, this class ultrasound measuring instrument is also inapplicable.
In fact, make a cardiac ultrasonic and detect, only use a small amount of simple functions of diasonograph.For common heart disease, what mainly need inspection is each unitary size of heart, structure, and hemodynamic variation and cardiac function, the major parameter of required ultrasound detection has: heart rate, Bicuspid valve flow velocity and barometric gradient.These measurement parameters only need a processing unit with Doppler (Doppler) pattern to add a cardiac ultrasonic probe just can to obtain.As seen, for the crowd of most of health screenings, there is no need to use comprehensive diasonograph to check fully.
The utility model content
The purpose of this utility model is to provide a kind of hand-held cardiac ultrasonic detector, and it can accurately orient the pairing scanning position of measurand, and measures cardiac ultrasonic at this scanning position place and detect required major parameter.Owing to do not need image-forming assembly, this utility model hand-held cardiac ultrasonic detector has lower, the simple structure of cost, and is convenient to operation and advantage such as carries.
For achieving the above object, the technical solution of the utility model is:
A kind of hand-held cardiac ultrasonic detector, comprise probe, user input apparatus, display device and the transmitter/receiver unit that is connected with probe, in addition, this hand-held cardiac ultrasonic detector also comprises the blood processor that is connected with transmitter/receiver unit, user input apparatus and display device respectively, and this blood processor is used to respond the orienting and the blood flow rate of measuring along the corresponding scanning position of blood flow rate maximum of ultrasonic beam direction and at above-mentioned scanning position place along the ultrasonic beam direction of control signal that user input apparatus is exported on predetermined scanning pattern.
Described blood processor is the DSP device, and wherein the first I/O end of this DSP device is connected to described transmitter/receiver unit, and second input of this DSP device is connected to user input apparatus, and second outfan of this DSP device is connected to display device.
Described hand-held cardiac ultrasonic detector also comprises the storage device that is connected with described blood processor, is used to store measurement parameter.
Described storage device is flush memory device or EEPROM.
Described hand-held cardiac ultrasonic detector also comprises the alarm device that is connected with described blood processor, is used for sending alarm after the location end signal that receives from described blood processor.
Described alarm device is a speaker.
Described user input apparatus comprises control unit and one group of button, and these buttons are connected to the control end of described blood processor through control unit, to export the different described blood processor that controls signal to.
Described display device is liquid crystal display device (LCD).
The element number that described probe has is 16 or 32.
Description of drawings
Fig. 1 is the hardware block diagram of a kind of cardiac ultrasonic detector in the prior art.
Fig. 2 is the hardware block diagram of this utility model embodiment 1.
Fig. 3 is the process chart of blood processor during the single measurement blood flow rate shown in Figure 2.
Fig. 4 is the sound spectrogram that this utility model hand-held cardiac ultrasonic detector shown in Figure 2 records on a scanning position.
Fig. 5 be this utility model hand-held cardiac ultrasonic detector shown in Figure 2 sweep in advance and fixation phase between workflow diagram.
Fig. 6 be this utility model hand-held cardiac ultrasonic detector shown in Fig. 2 the scanning position of orienting (that is the pairing scanning position in the strength of heartbeat) locate to measure along the blood flow rate of ultrasonic beam direction and the curve chart of time.
Fig. 7 is the hardware block diagram of this utility model embodiment 2.
Fig. 8 is the hardware block diagram of this utility model embodiment 3.
Fig. 9 is the hardware block diagram of this utility model embodiment 4.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.
Embodiment 1:
Fig. 2 is the hardware block diagram of this utility model embodiment 1.This hand-held cardiac ultrasonic detector mainly comprises: probe 202, transmitter/receiver unit 204, Digital Signal Processing (DSP) chip 206, user input apparatus 208, flush memory device 210, speaker 212 and liquid crystal display device (LCD) 214.
In the present embodiment, Digital Signal Processing (DSP) chip 206 is swept module and locating module is oriented the pairing scanning position of measurand in advance by carrying out, wherein sweep module in advance and be used to detect pairing blood flow rate maximum on the predetermined scanning pattern, and locating module is used for orienting the pairing scanning position of above-mentioned blood flow rate maximum on identical scanning pattern along the ultrasonic beam direction.Subsequently, Digital Signal Processing (DSP) chip 206 is carried out measurement module in the blood flow rate of the scanning position place measurement of orienting along the ultrasonic beam direction.
In the present embodiment, transmitter/receiver unit 204 comprises high frequency electric pulse signal generator, amplifier and analog and digital signal transducer (ADC).When ultrasonic scanning, transmitter/receiver unit 204 is exported the high frequency electric pulse signal according to the emissioning controling signal of dsp chip 206 and is given probe 202.In addition, 204 pairs of transmitter/receiver units carry out high frequency processing and amplifying and A/D conversion process from 202 echo-signals that receive of popping one's head in, and transfer data to dsp chip 206 then.
In the present embodiment, flush memory device 210 is used to store measurement of correlation parameter (for example, along the blood flow rate of ultrasonic beam direction), and in actual applications, flush memory device 210 also can replace to EEPROM or it is similar.In addition, speaker 212 is used for sending alarm after finish the location, and liquid crystal display (LCD) 214 is used to show the literal relevant with measurement result, data and waveform.
In the present embodiment, user input apparatus 208 comprises control unit 218 and one group of button 216, and this control unit 218 is exported different control signals according to different button inputs and given dsp chip 206.Dsp chip 206 is carried out respectively according to the control signal of user input apparatus 208 outputs and is swept module, locating module or measurement module in advance.
In addition, the hand-held cardiac ultrasonic detector in the present embodiment can adopt the continuous-wave doppler detection technique, by a wafer emission continuous ultrasound signal, and receives echo-signal by another wafer.Different with probe shown in Figure 1 110 is that owing to need not imaging, probe 202 can have simple relatively structure.Preferably, the element number of probe 202 can be 16 or 32.
Describe dsp chip 206 is finished the single blood flow velocity measurement during module, locating module or measurement module are swept in execution in advance processing procedure in detail below in conjunction with Fig. 3 and Fig. 4.
As shown in Figure 3, dsp chip 206 carries out front end signal processing and back end signal processing to data successively after receiving from the echo-signal of transmitter/receiver unit 204.Front end signal is handled and mainly to be comprised quadrature demodulation, low-pass filtering, wall filtering and FFT conversion, and wherein quadrature demodulation will move on to zero-frequency and high frequency (2f through the frequency spectrum of the echo-signal of A/D conversion process
0) locate (wherein, f
0Be the frequency that transmits), low-pass filtering is used for the filtering high-frequency signal, wall filtering be used for the filtering tissue frequency signal and keep the frequency signal of blood flow, the FFT conversion then is converted into frequency-region signal with time-domain signal.Back end signal is handled and mainly to be comprised and rearrange, compose average, spectrum compression and crisperding denoising, to obtain the time dependent oscillogram of frequency offseting value in the echo-signal, as shown in Figure 4.Can be with the maximum Δ f of waveform shown in Figure 4
MaxFrequency offseting value as current scanning position.
During the single blood flow velocity measurement, ultrasonic emitting wafer and to receive wafer all fixing, the increase frequency and the attenuating of the echo-signal that has the moving target (as heart) of shift transformation component to make to receive along the ultrasonic beam direction in the human body.Because Doppler effect, the size of frequency shift (FS) is with relevant along the blood flow rate of ultrasonic beam direction, and both relations are shown in equation 1.
Wherein, v is the blood flow rate along the ultrasonic beam direction, f
0The frequency of expression emission ultrasonic signal, Δ f represents the frequency shift (FS) in the echo-signal, and c is the velocity of sound in the tissue.Because parameter f
0With c all be known, so dsp chip 206 is by the frequency offseting value Δ f with current scanning position
MaxBe multiplied by coefficient
, can obtain the pairing blood flow rate v of current scanning position along the ultrasonic beam direction.
With regard to heart detects, as shown in Figure 1, cardiac ultrasonic detector of the prior art need be by image-forming assembly (promptly, digital scan converting unit 106, observe monitor 112 and camera unit 114) carry out ultra sonic imaging, and the experience that need to rely on the doctor is found out the pairing scanning position of measurand (that is, heartbeat strength).Unlike the prior art be, hand-held cardiac ultrasonic detector of the present utility model does not need above-mentioned image-forming assembly, sweep module and locating module in advance but carry out, can navigate to the pairing scanning position in the strength of heartbeat so intelligently by dsp chip 206.Subsequently, carry out measurement module by dsp chip 206, hand-held cardiac ultrasonic detector of the present utility model can be finished corresponding heart detecting operation.
Fig. 5 be this utility model hand-held cardiac ultrasonic detector shown in Figure 2 sweep in advance and fixation phase between workflow diagram.Describe the operation principle of this utility model hand-held cardiac ultrasonic detector in detail below in conjunction with Fig. 2 and Fig. 5.
At first, the user presses and sweeps key (step 504) in advance, and user input apparatus 208 outputs are swept control signal in advance and given dsp chip 206, and dsp chip 206 is carried out and swept module in advance.During sweeping in advance, LCD 214 shows that relevant information is operated in the pattern of sweeping in advance with this heart of prompting user ultrasound measuring instrument.Between the fixation phase of sweeping in advance and carrying out subsequently, the scanning area of probe 202 is the zone between left front breast the 3rd root bone to the 5 root bones.Preferably, when sweeping in advance, probe 202 moves (step 506) lentamente along scanning pattern shown in Figure 5 500 in scanning area.As mentioned above and as shown in Figure 3,206 pairs of echo-signals from transmitter/receiver unit 204 of dsp chip are carried out signal processing, thereby can obtain the pairing blood flow rate value Fi along the ultrasonic beam direction of current scanning position.After this, dsp chip 206 compares (step 508) with current measured blood flow rate value Fi with the blood flow rate maximum FMax that is stored in the flush memory device 210, and wherein, the initial value of blood flow rate maximum FMax is 0.If Fi≤FMax, then the FMax value in the flush memory device 210 is constant; If Fi＞FMax then is stored in Fi in the flush memory device 210 as new FMax.After finishing judgement and storage operation, the user has judged whether to finish the scanning (step 510) in whole zone.If do not finish the scanning to whole zone, then popping one's head in 202 moves to next scanning position and scans, dsp chip 206 repeating steps 508, and carry out corresponding judgment and storage equally, finished the scanning in whole zone until probe.At this moment, preserved the maximum FMax of pairing blood flow rate along the ultrasonic beam direction on the scanning pattern in the flush memory device 210.
Then, the user presses positioning key (step 512), and user input apparatus 208 output positioning control signals are given dsp chip 206, and dsp chip 206 is carried out locating module.Between fixation phase, LCD 214 shows that relevant information is operated in station-keeping mode with this heart of prompting user ultrasound measuring instrument.Probe 202 slowly moves (step 514) along predetermined scanning pattern 500 once more in identical scanning area.Equally, between this fixation phase, 206 pairs of echo-signals from transmitter/receiver unit 204 of dsp chip are carried out signal processing, thereby can obtain the pairing blood flow rate value Fi of current scanning position, and compare (step 516) with Fi and through the blood flow rate maximum FMax that obtains after sweeping in advance along the ultrasonic beam direction.If Fi＜FMax, then pop one's head in and 202 move to next scanning position and scan, dsp chip 206 repeating steps 516 equate with FMax until the pairing blood flow rate value along the ultrasonic beam direction of current scanning position, have also just found the pairing scanning position P of FMax
Max(that is, and along blood flow rate maximum pairing scanning position on scanning pattern of ultrasonic beam direction, just, the pairing scanning position in the strength of heartbeat).Orienting scanning position P
MaxThe time, dsp chip 206 output location end signals are given speaker 212, and speaker 212 sends jingle bell.
After finished the location, the user pressed the measurement key, and user input apparatus 208 output measuring control signals are given dsp chip 206, and dsp chip 206 is carried out measurement module.During measuring, LCD 214 shows that relevant information is operated in measurement pattern with this heart of prompting user ultrasound measuring instrument.During measuring, the probe 202 scanning position P that orienting
MaxThe place keeps a period of time, is preferably 1 minute.Equally, during this measured, dsp chip 206 can carry out signal processing to the echo-signal from transmitter/receiver unit 204, thereby can obtain scanning position P
MaxPairing one group of blood flow rate value along the ultrasonic beam direction, as shown in Figure 6.In Fig. 6, vertical coordinate is the blood flow rate along the ultrasonic beam direction, and abscissa is the time, and wherein crest value is the highest blood flow rate of systole, T by cycle of survey blood flow rate.After this measured group blood flow rate value was kept at flush memory device 210, dsp chip 206 carried out date processing to these measured values, and by following equation, can obtain the relevant detection parameter.
Heart rate:
(equation 2)
Mean flow rate:
(equation 3)
Barometric gradient: p=4v
2(equation 4)
The average pressure gradient:
(equation 5)
After finishing relevant treatment, dsp chip 206 is kept at the above-mentioned value that calculates in the flush memory device 210.By measured value and range of normal value are compared, dsp chip 206 can obtain the relevant detection result.Subsequently, dsp chip 206 can transmit relevant measured parameter value and testing result to carry out data, waveform and literal to LCD 214 and shows, so that user is checked intuitively, simultaneously, dsp chip 206 can also be exported and measure end signal to speaker 212, speaker 212 sends jingle bell, measures end with the prompting user.
Embodiment 2:
The foregoing description 1 will be swept module, locating module and measurement module in advance and be integrated on the dsp chip, and this is a kind of implementation, be not to be used to limit this utility model.In actual applications, also can realize sweeping in advance and positioning function with a process chip separately, and realize measurement function with another piece process chip.
The difference of present embodiment and embodiment 1 is, the hand-held cardiac ultrasonic detector of present embodiment (is for example used blood processor 1 separately, DSP1) carry out and sweep module and locating module in advance, (for example to obtain measurand, the strength of heartbeat) pairing scanning position, and use blood processor 2 (for example, DSP2) to carry out measurement module, in addition to measure blood flow rate at the scanning position place that orients along the ultrasonic beam direction.Fig. 7 is the hardware block diagram of present embodiment.
Because the sweeping in advance of present embodiment, location are identical with embodiment 1 with the surveying work principle, so no longer repetition herein.
Embodiment 3:
The difference of present embodiment and embodiment 1 is that the hand-held cardiac ultrasonic detector of present embodiment does not comprise alarm device (that is speaker).Dsp chip in present embodiment output location end signal after finish the location shows to display device, finishes with prompting user positioning action.Fig. 8 is the hardware block diagram of present embodiment.
Because the sweeping in advance of present embodiment, location are identical with embodiment 1 with the surveying work principle, so no longer repetition herein.
Embodiment 4:
The difference of present embodiment and embodiment 1 is that the hand-held cardiac ultrasonic detector of present embodiment uses the memory element in the blood processor sheet to carry out data storage, and does not use independent storage device (for example, flush memory device).Fig. 9 is the hardware block diagram of present embodiment.
Because the sweeping in advance of present embodiment, location are identical with embodiment 1 with the surveying work principle, so no longer repetition herein.
The cited embodiment of this utility model only is used to illustrate this utility model, but not is used to limit this utility model.Everyly can adopt identical with this utility model or proximate method, reach the technical scheme of identical effect, all should be within protection domain of the present utility model.
Claims (10)
1. hand-held cardiac ultrasonic detector, comprise probe, user input apparatus, display device and the transmitter/receiver unit that is connected with probe, it is characterized in that, described hand-held cardiac ultrasonic detector also comprises respectively and described transmitter/receiver unit, the blood processor that described user input apparatus is connected with described display device, described blood processor are used to respond the orienting and the blood flow rate of measuring along the corresponding scanning position of blood flow rate maximum of ultrasonic beam direction and at described scanning position place along the ultrasonic beam direction of control signal that described user input apparatus is exported on predetermined scanning pattern.
2. hand-held cardiac ultrasonic detector according to claim 1 is characterized in that described blood processor is the DSP device.
3. hand-held cardiac ultrasonic detector according to claim 2, it is characterized in that, the first I/O end of described DSP device is connected to described transmitter/receiver unit, second input of described DSP device is connected to described user input apparatus, and second outfan of described DSP device is connected to described display device.
4. hand-held cardiac ultrasonic detector according to claim 1 is characterized in that described cardiac ultrasonic detector further comprises the storage device that is connected with described blood processor, is used to store measurement parameter.
5. hand-held cardiac ultrasonic detector according to claim 4 is characterized in that described storage device is flush memory device or EEPROM.
6. hand-held cardiac ultrasonic detector according to claim 1, it is characterized in that, described cardiac ultrasonic detector further comprises the alarm device that is connected with described blood processor, is used for sending alarm after the location end signal that receives from described blood processor.
7. hand-held cardiac ultrasonic detector according to claim 6 is characterized in that described alarm device is a speaker.
8. hand-held cardiac ultrasonic detector according to claim 1, it is characterized in that, described user input apparatus comprises control unit and one group of button, and described button is connected to the control end of described blood processor through described control unit, to export the different described blood processor that controls signal to.
9. hand-held cardiac ultrasonic detector according to claim 1 is characterized in that described display device is LCD.
10. according to any one described hand-held cardiac ultrasonic detector among the claim 1-9, it is characterized in that the element number of described probe is 16 or 32.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2009200041877U CN201341897Y (en) | 2009-02-06 | 2009-02-06 | Hand-held heart ultrasonic testing instrument |
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| CNU2009200041877U CN201341897Y (en) | 2009-02-06 | 2009-02-06 | Hand-held heart ultrasonic testing instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916333A (en) * | 2010-08-12 | 2010-12-15 | 四川大学华西医院 | Transesophageal echocardiography visual simulation system and method |
| CN109164171A (en) * | 2018-09-13 | 2019-01-08 | 深圳达闼科技控股有限公司 | A kind of supersonic detection method, ultrasonic testing system and relevant apparatus |
| CN112423669A (en) * | 2018-07-18 | 2021-02-26 | 皇家飞利浦有限公司 | Acquisition workflow and status index in a handheld medical scanning device |
-
2009
- 2009-02-06 CN CNU2009200041877U patent/CN201341897Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916333A (en) * | 2010-08-12 | 2010-12-15 | 四川大学华西医院 | Transesophageal echocardiography visual simulation system and method |
| CN112423669A (en) * | 2018-07-18 | 2021-02-26 | 皇家飞利浦有限公司 | Acquisition workflow and status index in a handheld medical scanning device |
| CN109164171A (en) * | 2018-09-13 | 2019-01-08 | 深圳达闼科技控股有限公司 | A kind of supersonic detection method, ultrasonic testing system and relevant apparatus |
| US11241891B2 (en) | 2018-09-13 | 2022-02-08 | Cloudminds (Shenzhen) Holdings Co., Ltd. | Ultrasonic detection method, ultrasonic detection system, and related apparatus |
| CN109164171B (en) * | 2018-09-13 | 2023-08-29 | 深圳达闼科技控股有限公司 | Ultrasonic detection method, ultrasonic detection system and related device |
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