CN203841721U - Pulse active probe of ultrasound transcranial Doppler blood stream analyzer - Google Patents
Pulse active probe of ultrasound transcranial Doppler blood stream analyzer Download PDFInfo
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- CN203841721U CN203841721U CN201420175085.2U CN201420175085U CN203841721U CN 203841721 U CN203841721 U CN 203841721U CN 201420175085 U CN201420175085 U CN 201420175085U CN 203841721 U CN203841721 U CN 203841721U
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- module
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- doppler blood
- transcranial doppler
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- 239000000523 sample Substances 0.000 title claims abstract description 88
- 238000002604 ultrasonography Methods 0.000 title abstract description 8
- 239000008280 blood Substances 0.000 title abstract 4
- 210000004369 blood Anatomy 0.000 title abstract 4
- 230000017531 blood circulation Effects 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 34
- 238000001914 filtration Methods 0.000 claims description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 19
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000005669 field effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a pulse active probe of an ultrasound transcranial Doppler blood stream analyzer. The pulse active probe of the ultrasound transcranial Doppler blood stream analyzer comprises an ultrasound transducer, a pre-amplifier module, a current driving module, a transmitting module, a transmission matching module and a probe cable, wherein the transmission matching module receives signals transmitted from the ultrasound transducer. The pulse active probe also comprises a power supply circuit composed of a pi-type filter module, a voltage regulation circuit module and a charging circuit module; the input end of the charging circuit module and the output end of the probe cable are electrically connected, the output end of the charging circuit module and the input end of the voltage regulation circuit module are electrically connected, the output end of the voltage regulation circuit module and the input end of the pi-type filter module are electrically connected, and the output end of the pi-type filter module and the input end of the current driving module are electrically connected. The pulse active probe of the ultrasound transcranial Doppler blood stream analyzer achieves the functions of actively amplifying circuits, being high in anti-jamming performance and avoiding increasing the working temperature under the premise of changing an original system little.
Description
Technical field
This utility model relates to a kind of pulse active probe, relates in particular to a kind of ultrasonic transcranial doppler blood flow detection instrument pulse active probe.
Background technology
Ultrasonic probe is the requisite critical component of diasonograph, and it can be ultrasonic signal by converting electrical signal, ultrasonic signal can be transformed to the signal of telecommunication again, has ultrasound emission and accepts dual-use function.The ultrasonic transducer of the existing PW for ultrasonic transcranial doppler blood flow detection instrument probe is what separate with transmission circuit, and this probe belongs to the cylindricality list unit of shaking pops one's head in, and claims again pen type to pop one's head in.The ultrasonic transducer that material is piezoquartz is contained in the position above of probe, middle part is the cabinet of operator grasping, inner pad sound-absorbing material, a shielding twin-concentric cable that is about 1.8 meters is drawn to the control and signal deteching circuit plate of ultrasonic transcranial doppler blood flow detection instrument in position below, the transmission circuit of probe is also on this plate, the version of this probe and manufacturing process are relatively simple, and because probe is passive circuit, the heater element of whole probe only has piezoquartz, effectively controlled the temperature of probe and detected person contact site, avoid excess Temperature to cause and examined human body discomfort.More and more deterioration along with electromagnetic environment, as high-power extracorporeal lithotiptor of the transmitting of mobile phone, wireless router signal, electric car charger, hospital etc., from probe to the path of ultrasonic transcranial doppler blood flow detection instrument main frame, disturbed originally very small and weak echo-signal, cause the sensitivity of ultrasonic transcranial doppler blood flow detection instrument to decline, when serious, ultrasonic transcranial doppler blood flow detection instrument cannot work often be worked.
The capacity of resisting disturbance of passive pulse probe has been subject to great impact in application, designs a kind ofly to have more excellent interference free performance, do not increase ultrasonic probe and make temperature, do not change original system structure Xin Ka-Wing probe and become urgent needs.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of ultrasonic transcranial doppler blood flow detection instrument pulse active probe, can under the prerequisite of original system structure not being done to large change, realize the function that has active amplifying circuit, strong anti-interference performance, do not increase ultrasonic probe operating temperature.
This utility model is to solve the problems of the technologies described above the technical scheme adopting to be to provide a kind of ultrasonic transcranial doppler blood flow detection instrument pulse active probe, comprise ultrasonic transducer, pre-amplifying module, current drives module, transmitter module, transmitting matching module and probe cable, described transmitting matching module receives the signal of ultrasonic transducer transmitting, also comprise power supply circuits, described power supply circuits comprise: π type filtration module, voltage stabilizing circuit module and charging circuit module, the input of described charging circuit module and the outfan of probe cable are electrically connected, the outfan of described charging circuit module and the input of voltage stabilizing circuit module are electrically connected, the input of the outfan of described voltage stabilizing circuit module and π type filtration module is electrically connected, the input of the outfan of described π type filtration module and pre-amplifying module and current drives module is electrically connected.
Further, described probe cable comprises reception core, transmitting core and screen layer, and described reception core and current drives module are electrically connected, and described transmitting core and charging circuit module are electrically connected, and described screen layer and ultrasonic transducer are electrically connected.
Further, the signal of described transmitting matching module transmitting is that carrier frequency is the batch (-type) impulse train of 2MHz, and amplitude is 50V.
Further, described pre-amplifying module comprises coupling capacitance and field effect transistor and bilateral diode.
Further, described current drives module comprises a two-way amplifier with extremely low quiescent current power consumption, quiescent current maximum 0.55mA.
This utility model is to solve the problems of the technologies described above another technical scheme adopting to be to provide a kind of ultrasonic transcranial doppler blood flow detection instrument pulse active probe, comprise probe cable and probing shell, also comprise printed circuit board, described printed circuit board comprises ultrasonic transducer, pre-amplifying module, current drives module, transmitter module, transmitting matching module and probe cable, described transmitting matching module receives the signal of ultrasonic transducer transmitting, also comprise power supply circuits, described power supply circuits comprise: π type filtration module, voltage stabilizing circuit module and charging circuit module, the input of described charging circuit module and the outfan of probe cable are electrically connected, the outfan of described charging circuit module and the input of voltage stabilizing circuit module are electrically connected, the input of the outfan of described voltage stabilizing circuit module and π type filtration module is electrically connected, the input of the outfan of described π type filtration module and pre-amplifying module and current drives module is electrically connected.
Further, also comprise probe cable pad, described probe cable is connected in printed circuit board (PCB) by probe cable pad.
Further, also comprise piezoquartz.
Further, also comprise transducer electrode contact, described piezoquartz is connected in printed circuit board (PCB) by transducer electrode contact.
This utility model contrast prior art has following beneficial effect: the ultrasonic transcranial doppler blood flow detection instrument pulse active probe that this utility model provides, there are power supply circuits, volume at the large probe of not obvious change, main frame to original ultrasonic transcranial doppler blood flow detection instrument is not changed, significantly do not increase under the caloric value prerequisite of probe, improved the capacity of resisting disturbance of ultrasonic probe, reduced and received the loss of signal on probe wire, improve the sensitivity of ultrasonic transcranial doppler blood flow detection instrument, and improved the adaptability of ultrasonic transcranial doppler blood flow detection instrument to electromagnetic environment.
Accompanying drawing explanation
Fig. 1 is ultrasonic transcranial doppler blood flow detection instrument pulse active probe circuit diagram of the present utility model;
Fig. 2 is the ultrasonic transcranial doppler blood flow detection instrument pulse active probe installation diagram of utility model.
In figure:
11 printed circuit board (PCB) 21 transducer electrode contact 31 piezoquartzes
41 probe cable pad 61 probing shell 12 ultrasonic transducers
13 pre-amplifying module 14 current drives module 15 transmitter modules
16 probe cables 161 receive core 162 transmitting cores
163 screen layer 17 transmitting matching module 18 type filtration modules
19 voltage stabilizing circuit module 20 charging circuit modules
The specific embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Embodiment 1
The signal directly returning from ultrasonic transducer, its voltage and current has typical faint property feature, for example voltage amplitude in uV level, current intensity in uA level, this specific character is very easily interfered it the transmission path from probe cable to ultrasonic transcranial doppler blood flow detection instrument Inner portion, and signal also has loss on transmission line, this loss can reduce the sensitivity of system.According to the transporting mechanism of signal, in the source of signal, the place of close transducer increases signal Strong degree, also amplifies voltage, increases electric current, just can improve the capacity of resisting disturbance of ultrasonic probe, loss on minimizing line.
Fig. 1 is ultrasonic transcranial doppler blood flow detection instrument pulse active probe circuit diagram of the present utility model.
Refer to Fig. 1, the ultrasonic transcranial doppler blood flow detection instrument pulse active probe that this utility model provides, comprise ultrasonic transducer 12, pre-amplifying module 13, current drives module 14, transmitter module 15, transmitting matching module 17 and probe cable 16, described transmitting matching module 17 receives the signal of ultrasonic transducer 12 transmittings, also comprise power supply circuits, described power supply circuits comprise: π type filtration module 18, voltage stabilizing circuit module 19 and charging circuit module 20, the outfan of the input of charging circuit module 20 and probe cable 16 is electrically connected, the input of the outfan of charging circuit module 20 and voltage stabilizing circuit module 19 is electrically connected, the input of the outfan of voltage stabilizing circuit module 19 and π type filtration module 18 is electrically connected, the input of the outfan of π type filtration module 18 and pre-amplifying module 13 and current drives module 14 is electrically connected.
Probe cable 16 comprises reception core 161, transmitting core 162 and screen layer 163, receives core 161 and 14 electric connections of current drives module, transmitting core 162 and charging circuit module 20 electric connections, and screen layer 163 and ultrasonic transducer 12 are electrically connected.
The signal of transmitting matching module 17 transmittings is that carrier frequency is the batch (-type) impulse train of 2MHz, and amplitude is 50V.2MHz of the present utility model transmits and by contact conductor, is loaded into ultrasonic transducer through match circuit, so-called ultrasonic transducer is ultrasonic vibrator namely, it is ultrasonic that the signal of telecommunication causes that on ultrasonic vibrator concussion produces, and probe produces inverse piezoelectric effect, the transmitting of settling signal; The ultrasonic echo returning from tissue acts on ultrasonic vibrator and converts the signal of telecommunication to, and probe produces direct piezoelectric effect, and the signal of telecommunication of accepting sonic vibration generation is very faint.
Pre-amplifying module 13 comprises coupling capacitance and field effect transistor 2SK212, is connected in parallel on the bilateral diode BAV99 other end ground connection receiving on holding wire, anti-stop signal supersaturation.
Current drives module 14 comprises a two-way amplifier with extremely low quiescent current power consumption, and quiescent current maximum 0.55mA, for increasing fan-out capability, has adopted the way of output in parallel.
Power circuit of the present utility model, comprise charging circuit module 20 and a π type LC electric source filter circuit, during launching, amplitude 50V, the voltage that dutycycle is 50% to capacitor charging, produces the pulsating volage of about 25V through inductance, the voltage of generation+10V left and right after the 5V of two series connection Zener diode, now+10V power supply is actually the value of a variation, and there are a lot of ripple compositions the inside, becomes a stable voltage after must filtering could power to amplifier.Consider that whole circuit is low-power consumption, electric current is less, and must reduce as far as possible heater element, and this utility model has adopted π type LC passive filter circuit.
Embodiment 2
Fig. 2 is the ultrasonic transcranial doppler blood flow detection instrument pulse active probe installation diagram of utility model.
Refer to Fig. 2, the ultrasonic transcranial doppler blood flow detection instrument pulse active probe that this utility model provides, comprise probe cable 16 and probing shell 61, also comprise printed circuit board 11, described printed circuit board 11 comprises ultrasonic transducer 12, pre-amplifying module 13, current drives module 14, transmitter module 15, transmitting matching module 17 and probe cable 16, described transmitting matching module 17 receives the signal of ultrasonic transducer 12 transmittings, also comprise power supply circuits, described power supply circuits comprise: π type filtration module 18, voltage stabilizing circuit module 19 and charging circuit module 20, the outfan of the input of charging circuit module 20 and probe cable 16 is electrically connected, the input of the outfan of charging circuit module 20 and voltage stabilizing circuit module 19 is electrically connected, the input of the outfan of voltage stabilizing circuit module 19 and π type filtration module 18 is electrically connected, the input of the outfan of π type filtration module 18 and pre-amplifying module 13 and current drives module 14 is electrically connected.
Also comprise probe cable pad 41, probe cable 16 is connected in printed circuit board (PCB) 11 by probe cable pad 41.
Also comprise piezoquartz 31.
Also comprise transducer electrode contact 21, piezoquartz 31 is connected in printed circuit board (PCB) 11 by transducer electrode contact 21.
Pack impulse ultrasound active probe printed circuit board 11 into probing shell 61, again two transducer electrode pads, the 21 use wires of front end are burn-on two electrodes of piezoquartz 31, then the screen layer wire bonding of probe cable 16 is arrived to probe cable pad 41, finally seal up probing shell.
To sum up, the ultrasonic transcranial doppler blood flow detection instrument pulse active probe that this utility model provides, there are power supply circuits, at the volume of the large probe of not obvious change, the main frame of original ultrasonic transcranial doppler blood flow detection instrument is not changed, is not significantly increased under the caloric value prerequisite of probe, improved the capacity of resisting disturbance of ultrasonic probe, reduced and received the loss of signal on probe wire, improve the sensitivity of ultrasonic transcranial doppler blood flow detection instrument, and improved the adaptability of ultrasonic transcranial doppler blood flow detection instrument to electromagnetic environment.
Although this utility model discloses as above with preferred embodiment; so it is not in order to limit this utility model; any those skilled in the art; within not departing from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (9)
1. a ultrasonic transcranial doppler blood flow detection instrument pulse active probe, comprise ultrasonic transducer (12), pre-amplifying module (13), current drives module (14), transmitter module (15), transmitting matching module (17) and probe cable (16), described transmitting matching module (17) receives the signal of ultrasonic transducer (12) transmitting, it is characterized in that: also comprise power supply circuits, described power supply circuits comprise: π type filtration module (18), voltage stabilizing circuit module (19) and charging circuit module (20), the outfan of the input of described charging circuit module (20) and probe cable (16) is electrically connected, the input of the outfan of described charging circuit module (20) and voltage stabilizing circuit module (19) is electrically connected, the input of the outfan of described voltage stabilizing circuit module (19) and π type filtration module (18) is electrically connected, the input of the outfan of described π type filtration module (18) and pre-amplifying module (13) and current drives module (14) is electrically connected.
2. ultrasonic transcranial doppler blood flow detection instrument pulse active probe as claimed in claim 1, it is characterized in that, described probe cable (16) comprises reception core (161), transmitting core (162) and screen layer (163), described reception core (161) and current drives module (14) are electrically connected, described transmitting core (162) and charging circuit module (20) are electrically connected, and described screen layer (163) and ultrasonic transducer (12) are electrically connected.
3. ultrasonic transcranial doppler blood flow detection instrument pulse active probe as claimed in claim 1, is characterized in that, the signal of described transmitting matching module (17) transmitting is that carrier frequency is the batch (-type) impulse train of 2MHz, and amplitude is 50V.
4. ultrasonic transcranial doppler blood flow detection instrument pulse active probe as claimed in claim 1, is characterized in that, described pre-amplifying module (13) comprises coupling capacitance and field effect transistor and bilateral diode.
5. ultrasonic transcranial doppler blood flow detection instrument pulse active probe as claimed in claim 1, is characterized in that, described current drives module (14) comprises a two-way amplifier with extremely low quiescent current power consumption, quiescent current maximum 0.55mA.
6. a ultrasonic transcranial doppler blood flow detection instrument pulse active probe, comprise probe cable (16) and probing shell (61), it is characterized in that: also comprise printed circuit board (11), described printed circuit board (11) comprises ultrasonic transducer (12), pre-amplifying module (13), current drives module (14), transmitter module (15), transmitting matching module (17) and probe cable (16), described transmitting matching module (17) receives the signal of ultrasonic transducer (12) transmitting, also comprise power supply circuits, described power supply circuits comprise: π type filtration module (18), voltage stabilizing circuit module (19) and charging circuit module (20), the outfan of the input of described charging circuit module (20) and probe cable (16) is electrically connected, the input of the outfan of described charging circuit module (20) and voltage stabilizing circuit module (19) is electrically connected, the input of the outfan of described voltage stabilizing circuit module (19) and π type filtration module (18) is electrically connected, the input of the outfan of described π type filtration module (18) and pre-amplifying module (13) and current drives module (14) is electrically connected.
7. ultrasonic transcranial doppler blood flow detection instrument pulse active probe as claimed in claim 6, it is characterized in that, also comprise probe cable pad (41), described probe cable (16) is connected in printed circuit board (PCB) (11) by probe cable pad (41).
8. ultrasonic transcranial doppler blood flow detection instrument pulse active probe as claimed in claim 6, is characterized in that, also comprises piezoquartz (31).
9. ultrasonic transcranial doppler blood flow detection instrument pulse active probe as claimed in claim 8, it is characterized in that, also comprise transducer electrode contact (21), described piezoquartz (31) is connected in printed circuit board (PCB) (11) by transducer electrode contact (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175085.2U CN203841721U (en) | 2014-04-11 | 2014-04-11 | Pulse active probe of ultrasound transcranial Doppler blood stream analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175085.2U CN203841721U (en) | 2014-04-11 | 2014-04-11 | Pulse active probe of ultrasound transcranial Doppler blood stream analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN203841721U true CN203841721U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420175085.2U Expired - Lifetime CN203841721U (en) | 2014-04-11 | 2014-04-11 | Pulse active probe of ultrasound transcranial Doppler blood stream analyzer |
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| Country | Link |
|---|---|
| CN (1) | CN203841721U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104825196A (en) * | 2015-05-26 | 2015-08-12 | 昆明医科大学第二附属医院 | Handheld type ultrasonic measurement device used for detecting encephaledema after bone flap removing operation |
| CN109009221A (en) * | 2018-08-22 | 2018-12-18 | 广东华睿远洋医疗科技有限公司 | A kind of Doppler's cardiac output detection device and its detection method |
| CN109770946A (en) * | 2019-03-22 | 2019-05-21 | 苏州大学附属第一医院 | A kind of miniature probe is applied to the method for assessment haemodynamics in anastomosis of blood vessel |
-
2014
- 2014-04-11 CN CN201420175085.2U patent/CN203841721U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104825196A (en) * | 2015-05-26 | 2015-08-12 | 昆明医科大学第二附属医院 | Handheld type ultrasonic measurement device used for detecting encephaledema after bone flap removing operation |
| CN109009221A (en) * | 2018-08-22 | 2018-12-18 | 广东华睿远洋医疗科技有限公司 | A kind of Doppler's cardiac output detection device and its detection method |
| CN109770946A (en) * | 2019-03-22 | 2019-05-21 | 苏州大学附属第一医院 | A kind of miniature probe is applied to the method for assessment haemodynamics in anastomosis of blood vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160311 Address after: Yao street in Qixia District of Nanjing City, Jiangsu province 210000 Gan Jia Bian Dong No. 108 Building 2 Room 301 Patentee after: NANJING OSTEO BIOTECHNOLOGY CO.,LTD. Address before: 210042, room 6, building 699-8, Xuanwu Avenue, Xuanwu District, Jiangsu, Nanjing, 201 Patentee before: NANJING KEJIN INDUSTRIAL LLC |
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| CX01 | Expiry of patent term |
Granted publication date: 20140924 |
|
| CX01 | Expiry of patent term |