Hubei Hannas Tech Co.,Ltd-Professional Piezoceramic Elements Supplier
Products
You are here: Home / Products / Medical Transducer / TCD Doppler Sensor / Medical 4MHz TCD Doppler Transducer for Ultrasound Transcranial Doppler
 
High Frequency Wholesale Products For Manufacturers And Factories:

 

Feedback

Related News

content is empty!

loading

Share to:
sharethis sharing button

Medical 4MHz TCD Doppler Transducer for Ultrasound Transcranial Doppler

We can offer 2Mhz,4Mhz,6Mhz ,8Mhz TCD Doppler probe .The shape of shell can be customized based on your requirements.

Application:This probe is used for craniocervical doppler flowmeter or ultrasound transcranial doppler flow analyzer ,it is good anti-interference ability and high sensitivity,which has been integrated with many TCD equipment manufacturer.
Availability:
Quantity:
  • PH-4

  • Piezohannas

  • PH-4


 Medical 4MHz TCD Doppler Transducer for Ultrasound Transcranial Doppler


Introduction:


The Doppler blood measuring device we developed can equip with 2mhz, 4mhz, 8mhz blood flow sensor to measure the different depth blood flow rate. The output interface is USB port, and input the power is standard PC power. There could offer some sort of raw data or the calculated data as Vp; Vm, Vd, PI, RI, SD, Hr.  Besides, we could offer the output as bitmap spectrum when connect with your laptop or PC directly.


4MHz Craniocervical Doppler probe:


Frequency

 4MHz

Sensitivity

 -10dB

Bandwidth(-6dB):   

30%

Static Capacitance:   

1300 pF

Impedance: 

50Ω

Protection level: 

IPX7 4000Vagainst ground

Length of Cable:   

 2m

Customizable:

Yes


Technology parameters:                                                                      

 

Model

PH-2

PH-4

PH-8

Working frequency

2MHz±10%

4MHz±10%

8MHz±10%

Working method

Pulse wave

Continuous wave

Continuous wave

Static capacitance

2900PF±20%

Send:1500PF±20%

receive:1500PF±20%

send:500PF±20%

receive: 500PF±20%

relative sensitivity

>-9dB

>-20dB

>-15dB

Relative bandwidth

≥30%

≥15%

≥20%

receiving-sending mixed

---

<-50dB

<-50dB

Main use

For brain blood flow analysis

For the carotid artery blood flow analysis

For superficial vascular blood flow analysis


Spectrum Parameters:


1.Depth:
These parameters for most patients (age above 20 years old) are mainly based on the detection of vascular anatomy depth.

a. Left or right middle cerebral artery, the general depth of 55mm (generally long middle cerebral artery, and some hospitals and then divided into the former after 3 above)
b. Left or right anterior cerebral artery depth 65mm
c. Left or right middle cerebral artery depth 70mm
d. Left or right posterior inferior cerebellar artery depth 60mm
e. Left or right intracranial vertebral artery depth 25mm
f. Left (or right) eye within craniocervical depth 65mm
g. Basilar artery depth 82mm

h. Left or right eye arterial general depth of 45mm (power must be less than 250%, otherwise injury eyeballs)


2.Power:
General Power = 400% except the ophthalmic artery.
Change principles: appropriate increase or decrease with the detection depth.


3.Gain:
The gain is usually about 30dB.
Change principles: appropriate increase or decrease with the detected signal strength. Without changing the general set according to user habits.


 4.Sample volume:

Generally it is about 12mm.
Change the principle: If taken large, easily detected signal, but the vascular low resolution, and vice versa more difficult detection signal, but the vascular high resolution. Generally for deeper blood vessels should be bigger, lighter is smaller.


5. Repeat frequency:
I.e. sampling frequency. Hardware few files 5.208KHz; 7.8125kHz; 10.4167kHz; 15.625kHz;

Change the principle: limited detection depth, directly determine the flow rate range. Its value with Depth and Sample volume. Since receive data, first of all deal with the relationship of these parameters do spectrum window must clearly can not do otherwise, the flow rate scale. All these need to be changed at any time with the detection depth.


6.AcrossTime:
Detecting the time required for the spectrum diagram of a full-screen.

Change principles: interface design, spectrum window can be longer or shorter. Spectrum window is the longer, the longer time. For a fixed interface, this parameter set is no longer changed. For example, for the 256-point FFT FIG longitudinal width must point pixel 256, while the horizontal generally taken per 80-100 points / S is more appropriate. Need to be doubled for a 512-point FFT lateral more appropriate, or spectrogram sawtooth will seem too high, sharp or too horizontal long influence doctors interpret blueprints. Multi-integer convenient. For example: 4S or 5S, 6S like.


7.WorkMode: work.
2M (pulse); the 4M (pulse) mode; 4M (continuous) mode; hardware each time only one way to work.
Wins: the number of windows.
Also that depth number. The new hardware to a maximum depth of 4. Can make four spectral windows, each spectrum window that is a depth of sampling volume window.

Hardware every two adjacent sample volume of nearly half of the window is a signal overlap. Example: the first depth signal also contains a a half second depth signal, and the first depth signal also contains half of the first depth signal, also contains the signal of the half 3 depth, but the depth a signal is not the first depth signal. Nos. 1 and 3 of the depth of the signal is completely independent, the first 2 and 4 of the depth of the signal is also completely independent. When such a depth of four signal displayed on the visual feeling there will be a transition.



Medical 4MHz TCD Doppler Transducer for Ultrasound Transcranial Doppler


Previous: 
Next: 

Hot Products

  • Dimensions:60x5mm Resonant frequency fr: 420 KHz±2%      Electromechanical coupling coefficient K33:≥58% Resonant impedance Zm: ≤45 Ω Static capacitance Cs: 5100pF±14%@1kHz Application: Piezo transducer for milk analysis, Piezo transducer for vibration, transducer for matter dispersion, sonar transducer Ultrasonic sensor, vibration sensor, wall thickness sensor, material stress sensor, pressure sensor, energy electricity harvesting, compression sensor, piezo expansion sensor and others.
    $0
    $0
  • We can offer 2Mhz,4Mhz,6Mhz TCD Doppler Sensor .The shape of shell can be customized based on your requirements. Application:This probe is used for craniocervical doppler flowmeter,it is good anti-interference ability and high sensitivity,which has been integrated with many TCD equipment manufacturer.
    $0
    $0
  • We can offer the 5Mhz,8Mhz,10Mhz,13Mhz a-ultrasound sensor Application : The sensor used for measuring thickness of fat of Pet or livestock, and measuring distance or measuring thickness in ophthalmology.
    $0
    $0
  • Dimension: Outer Dimension: 18mm Inter Dimension:  15mm Height:  15mm Features of piezoelectric crystal: 1. Low impedance 2. The waveform is stable 3. High electromechanical conversion efficiency 4. Low dielectric loss 5. Heat a small 6. Big spray volume 7. The life of more than 5000 hours 8. Acid corrosion
    $0
    $0
  • Dimension : OD60mm xID30mm x Thi10mm For ultrasonic welding machine,our clients often order 60 x30 x10mm,50 x20 x6.5mm piezo ring ,they are in stock all in our factory. Please contact us as soon if any requirements.
    $0
    $0
  • Dimension : OD50mm xID20mm x Thi6.5mm For ultrasonic welding machine,our clients often order 60 x30 x10mm,50 x20 x6.5mm piezo ring ,they are in stock all in our factory. Please contact us as soon if any requirements.
    $0
    $0
  • Hemisphere piezo: Dimension: Diameter : 50mm OD of Hole:8mm Wall thickness : 2mm Features of high temperature piezoceramic: 1. Low impedance 2. The waveform is stable 3. High electromechanical conversion efficiency 4. Low dielectric loss 5. Heat a small 6. Big spray volume 7. The life of more than 5000 hours 8. Acid corrosion
    $0
    $0
  • Dimension (diameter×thickness):10mmx2mm Features of piezoelectric crystal: 1. Low impedance 2. The waveform is stable 3. High electromechanical conversion efficiency 4. Low dielectric loss 5. Heat a small 6. Big spray volume 7. The life of more than 5000 hours 8. Acid corrosion
    $0
    $0
  • Dimension (diameter×thickness):16mmx0.4mm Features of piezoelectric crystal: 1. Low impedance 2. The waveform is stable 3. High electromechanical conversion efficiency 4. Low dielectric loss 5. Heat a small 6. Big spray volume 7. The life of more than 5000 hours 8. Acid corrosion
    $0
    $0
  • Hemisphere piezo: Dimension: Diameter : 15mm OD of Hole:4mm Wall thickness : 1mm Features of high temperature piezoceramic: 1. Low impedance 2. The waveform is stable 3. High electromechanical conversion efficiency 4. Low dielectric loss 5. Heat a small 6. Big spray volume 7. The life of more than 5000 hours 8. Acid corrosion
    $0
    $0
  • About ultrasonic distance transducer, we can offer transducer that can detect 1M,3M,4M,5M,8M,12M,20M,30M,50M, Also we can accpet customization.
    $0
    $0
  • About ultrasonic distance transducer, we can offer transducer that can detect 1M,3M,4M,5M,8M,12M,20M,30M,50M, Also we can accpet customization.
    $0
    $0
  • Size: 54.5x47x40mm Application: Underwater communication device, Hydrophone , Sonar.
    $0
    $0
Hubei Hannas Tech Co.,Ltd  is a professional piezoelectric ceramics and ultrasonic transducer manufacturer, dedicated to ultrasonic technology and industrial applications.                                    
 

RECOMMEND

CONTACT US

Add: No.302 Innovation Agglomeration Zone, Chibi Avenu ,Chibi City, Xianning, Hubei Province,China
E-mail: sales@piezohannas.com
Tel: +86 07155272177
Phone: +86 +18986196674         
QQ: 1553242848 
Skype: live:mary_14398
​        
Copyright 2017  Hubei Hannas Tech Co.,Ltd All rights reserved. 
Products