emka TECHNOLOGIES offers blood pressure catheters for use with rodents (mice and rats) and large animals (from rabbits to cows):
A solid state sensor contains a piezoresistive membrane, which is an electromechanical systems that react to compression1. Placed at the tip of the catheter, this flexible membrane is in direct contact with the blood, and generates a voltage when deformed by the blood pressure. The force of the blood pressure is then transmitted to an amplifier, through the catheter’s wires housed into a polyimide tubing.
1 Piezoelectric sensor definition from Wikipedia.
As it names implies, a fluid-filled catheter is filled with a fluid. The blood pressure is applied at the catheter tip and transmitted through the fluid to the proximal side of the tubing, where the sensor is located.
A typical setup includes:
For Fluid filled catheters :
For Solid state pressure catheters:
Catheter size is based on animal weight and application. Small vessel applications may require a smaller size than the listed suggestion.
All 7.0F Catheters are available with an optional lumen to allow drug administration, blood sampling or guide wire insertion.
When you visit any web site, it may store or retrieve information on your browser, mostly in the form of cookies. Control your personal Cookie Services here.