Type
Example
Description
Strain Gauge
- Codman
- Raumedic
- Uses a piezoelectric strain gauge
- Changes in ICP distort the device causing changes in the resistance across it
- Degree of resistance translated into an ICP value
Fibreoptic
- Camino
- Uses light transmitted via fibreoptics towards a displaceable mirror
- Changes in ICP move the mirror causing differences in intensity of reflected light
- Intensity of reflection can be translated into an ICP value
Pneumatic
- Spiegelberg
- Uses a small balloon in the distal catheter tip
- Changes in ICP result in pressure changes within the balloon
- Allows quantitative measurement of intracranial compliance