Issue: I am seeing air bubbles in the catheter tip
Example of PA-C10 with air bubble
- Visually see bubbles in the catheter tip
- Data for pressure measurements are railed negative or Positive (indicative of blown sensor & can't be reused)
Handle the devices with care to ensure to now blow the sensor
Please see the following article about appropriate handling of the blood pressure implants to prevent the user from blowing the sensor:
Appropriate regel technique
First, make sure you are regelling the catheter tips appropriately, please see the following articles:
Make sure to purge any air in the tip of the regel syringe prior to regelling the catheter tip such that you are not pushing air into the catheter tip from the syringe.
You will ONLY want to regel a catheter if there are bubbles present in the gel area (highlighted in purple). Anywhere else, you will NOT want to reuse the device.
Example of HD-X11 with air bubble in catheter tip
Appropriate re-hydration of the catheter tip
The surgical manuals cover the rehydration of the catheter tip. Please ensure that the catheter tip is left on during rehydration. It is recommended for small animal blood pressure implant to hydrate at room temperature.
Link to Surgical Manual section: Surgical Manuals, Videos, & Notes
Offsets should be taken at room temperature, but only for the purpose of determining if it's within pressure specifications.
Appropriate storage of regel syringes
It is important to store regel syringes with the tip down. Other article to review are the following:
PTD-M11 (with radiopaque marker band) Catheter with Blood & Air Bubbles in Catheter Tip
PTD-L21 (with LV collar) Catheter with Air bubbles