In vivo blood pressure sensor
This presentation is the property of its rightful owner.
Sponsored Links
1 / 12

In-vivo Blood Pressure Sensor PowerPoint PPT Presentation


  • 150 Views
  • Uploaded on
  • Presentation posted in: General

In-vivo Blood Pressure Sensor. Anup Pillai Dhanya Premkumar Nair. Background. Long-Term Implantable Blood Pressure Monitoring System Wireless Battery less In VIVO Blood Pressure Sensing Micro system. Objective. The sensor specified earlier exhibits increased noise levels

Download Presentation

In-vivo Blood Pressure Sensor

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


In vivo blood pressure sensor

In-vivo Blood Pressure Sensor

Anup Pillai

Dhanya Premkumar Nair


Background

Background

  • Long-Term Implantable Blood Pressure Monitoring System

  • Wireless Battery less In VIVO Blood PressureSensing Micro system


Objective

Objective

  • The sensor specified earlier exhibits increased noise levels

  • The transmitter of the same dissipated 80% of the system power

  • Our objectives are:

    a) To find a solution that will exhibit less noise levels

    b) To find ways of having a more power efficient transmitter for the sensor


Timelines

Timelines


Objective 1

Objective 1

  • To find a solution which exhibits less noise levels

  • We began by investigating the reason for the high noise levels in the current design


Reason for noise

Reason for noise

  • Animal body vapor penetration into the device

  • Affect the functioning of the electrical connections within the sensor.


The in vivo blood pressure sensor inside an actual lab rat

The in vivo blood pressure sensor inside an actual lab rat


The damage caused

The damage caused

  • The high impedance node can be highly sensitive to vapor penetration

  • Electrical connections between the sensor diaphragm and IC chip


Solution proposed

Solution proposed

  • Protection for moisture penetration is required for the sensor diaphragm as well as the electrical connections between the sensor diaphragm and IC chip.


Solution proposed1

Solution proposed:

  • A passivation layer, such as silicon dioxide (SiO2) and silicon nitride (Si3N4), can be deposited on the top of diaphragm.

  • An encapsulant material with strong moisture resistance can be used to protect the bond wires between the sensor and IC before applying silicone passivation layer.


Conclusion

Conclusion

  • Improve packaging methods

  • This will enhance the reliability of the micro system for long-term blood pressure monitoring


References

References

  • http://etd.ohiolink.edu/view.cgi/Cong%20Peng.pdf?case1228412139 - “Wireless Battery less in Vivo Blood Pressure Sensing Microsystem for Small Laboratory Animal Real-Time Monitoring” Cong, Peng

  • http://filer.case.edu/djy/publications/Sensor-04-BP.pdf -“Novel Long-Term Implantable Blood Pressure Monitoring System” Peng Cong, Darrin J. Young, and Wen H. Ko

  • http://resources.metapress.com/pdf-preview.axd?code=t331767305362515&size=largest – “Fibre optic sensors in biomedical sciences” Otto S. Wolfbeis

  • “Biosensors for real-time in vivo measurements” -George S. Wilson,  and Raeann Gifford


  • Login