Development of Printed Circuit board for a handheld inline shunt flow monitoring system used to treat Hydrocephalus

This project was funded by Texas Medical Research Collaborative (click on the link to know more about the project).

The design challenge was to develop the printed circuit board in certain form factor with accurate placement of visual indicators and other components preserving ergonomics of design.

Design included :

Fine pitch components, microcontroller, sensors, relays, amplifier, LED’s, USB, RS232, on board low noise power supply, provision for different voltages on board, created library components, dimensional constraints for portable design.

Later i was also involved in assembly and functional testing of the device. I wrote small embedded C programs to test relays, sensors and indicators on the board.

Layout of components

Before sending out this board for mass production, The design was manufactured in house using various PCB manufacturing equipment. Working with gerber files in LPKF circuit pro and then exporting this design for milling and drilling on LPKF’s protomat S 103 model. Later on, silk screening and green masking was done in order to protect the PCB from shorts and to avoid degradation over time.

 

Completed PCB in house after Green Masking –

This design was completely developed and manufactured in UTARI

 

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