Catheters (and/or pigtails), Pressure Sensors & Electrodes
- Inspect for damage (cracking, kinks etc) prior to each use.
- Grip 5-10mm away from the sensor/electrode area to avoid damage to the fragile wires inside.
- If forceps or other surgical tools must be used to grip and introduce the catheter, slip soft surgical tubing over tips of the tool to cushion interface with catheter.
- Disconnect during electrical defibrillation or electrosurgery.
- Use an electrostatic discharge mat or grounding bracelet when handling the catheter (recommended).
- Use a sheath introducer (o-ring type sealing introducer) to insert catheter in large animal models.
- Clean immediately after use.
- Bend, kink, cut, crease, knot, fold, crush etc. Especially around the sensor, electrode area.
- Tap the sensor or electrodes against a rigid surface.
- Grip the catheter anywhere near the sensor/electrode area incl. between the electrodes or between the electrodes and the pressure sensor case.
- Use sharp objects in the sensor/electrode area.
- Apply excessive force or pressure to the sensor or electrodes e.g do not set objects on top of catheter or tighten sutures over sensors/electrode area.
- Touch the sensor element while the catheter is disconnected from monitoring equipment as the pressure sensor element is sensitive to electrostatic charge.
- Use cusp-type self-sealing introducers*.
- Clean with stiff-bristled brush.
- Clean with high pressure water jet.
Surgical Application techniques(recommended duration of each diagnostic procedure should be under 4 hours)
- Pull back slightly if resistance is encountered while inserting catheter and then try advancing again.
- Advance the sensor/electrode area completely beyond the proximal suture before tightening suture.
- Loosen the proximal suture before pulling catheter out to avoid sensor or electrodes catching.
- Apply excessive force when inserting or removing the catheter as the catheter may incur damage and you could traumatize the linings and associated tissue of the cardiovascular system.
- Damage the catheter with the tips of any forceps or tweezers that are used to grip the artery when inserting the catheter.
- Push the catheter tip directly through the left ventricular wall, instead make an entry hole in ventricular apex with a needle first, then insert the catheter through the hole (open chest, direct LV approach).
Connector and Cables
- Protect connectors from fluid.
- Immerse connectors in liquid.
- Keep catheters and sensors (and lumen in applicable models) wet until cleaning.
- Clean thoroughly with approved enzymatic cleanser (Terg-A-Zyme or equivalent) immediately after use.
- Expose to alcohol, cresols, phenols, mercury compounds, hypochlorites, acetone, peroxide, silicone chlorine, xylenes, trichloroethylene, or freon.
- Use ultrasonic cleaner.
- Immerse electrical connector.
Disinfection or Sterilization
- Dry catheter (and lumen for volume and pv special) before sterilizing.
- Remove protective cover from catheter.
- Place in plastic shipping tray with protective cover once sterilized.
- Autoclave, irradiate (gamma/e-beam), plasma, peroxide or formaldehyde vapor solutions.
- Use SporoxTM or Cidex® PA Solutions.
- Allow any body fluids to collect under protective covering on catheter connector, otherwise sterilization cannot be assured.