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Pressure

Scisense catheters and associated control units are uniquely designed to optimize signal quality and integrity, to minimize trauma during catheterization and to maximize durability and the lifespan of the catheter. Accurate detection of blood pressure is perhaps the most crucial parameter in any study requiring an indication of cardiac function.

In the research laboratory, pressure measurement techniques fall into three broad classifications:

  1. Indirect and approximate measurements such as tail cuffs which are unable to detect diastolic pressures accurately.
  2. Direct measurements using catheters filled with a fluid that carries pressure changes from the catheter tip to a remote mounted sensor, often with frequency response issues that create noise in the signal (for more info please click here); and
  3. Direct measurements using the highly responsive solid state sensor from Scisense, side-mounted at the tip of the catheter to precisely measure pressure directly at the location of interest.
The latter technique offers a precise and meaningful measurement of blood pressure since solid state pressure sensors can offer flat frequency response to 10kHz. These catheter mounted devices are typically inserted through the carotid or femoral artery until the sensor is located in the region of interest such as the ventricle or aorta.

Some applications for our pressure products include:

  • arterial pressure
  • ventricular pressure
  • venous pressure
  • pressure dynamics of the G.I. tract
  • pressure dynamics of the urogenital tract
  • occular pressure
  • pulse wave velocity (DP)
  • intracranial pressure
  • interstitial fluid/tissue pressure
  • high-range blast exposure
  • in-vitro bench studies
  • industrial applications

For more information:

To gain a greater in-depth technical understanding about pressure measurements as it releates solid-state vs. fluid-filled or to learn about the ideal damping coefficient please click here.

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