The Certofix® PresSure Check lets one measure the average
pressure in a punctured vessel. The pressure measurement is
based on Boyle’s law (p x v=const under isothermal conditions).
Through the compression of a defined gas volume (air) by a
fluid, it is possible to determine the amount of pressure in the
fluid system. This pressure level can be easily read in the fluid
column shown in the display tube of the PresSure Check syringe.
Arterial puncture
Venous puncture
On the basis of the level of the rising fluid column, it is possible to
make a simple reading of the pressure in the interior space of the
syringe and thus also of the pressure in the punctured vessel. The
open area in the syringe plunger provides a viewing window for
the pressure reading. The window indicates a pressure range from
30 to 50 mm Hg* (see illustration).
Syringe function
When the two grip plates are parallel to one another, the Certofix® PresSure Check can be used as a syringe. With this setting the Certofix® PresSure Check feels like a normal syringe providing a clear haptic signal whether the syringe function of the pressure measurement function is activated.
Pressure measurement
For pressure measurement, the two grip plates must be at right angles to each other. This connects the display tube located in the syringe plunger with the interior space of the syringe activating the pressure measurement function of the device.
“This system has the
advantage that I can keep the entire puncture system connected.
It is a closed system when I use the valve needle and advance
the guide wire from the lateral access port. In comparison to
the methods used up until now, this represents real progress
and a true innovation.
In addition, I would be very pleased if everyone could use such
a syringe and be able to perform venous access procedures safely
and reliably.”
Dr. G. Michaelis, Spital Landshut, Waldshut-Tiengen,
Germany
