Prototype catheter samples
The colour-state concept is described above; this image is included only as a research-stage prototype visual.
Coating concept
A pH-sensitive polymer coating for catheter surfaces.
The coating is designed as a passive visual system. It embeds pH-sensitive dyes in a polymer matrix so changes associated with microbial activity can appear as a colour shift on the catheter segment outside the body.
Red baselineInitial coating state before a colour alert is triggered.
Yellow warningLow-level activity is intended to produce an early visible signal.
Blue signalA stronger colour change is intended to indicate a higher level of microbial activity.
Prototype imagery
Current sample imagery from coating development.
This photo shows prototype catheter samples from development work. It should not be read as a complete visual of every investigated colour state.
Use cases
Central venous catheters and peripheral IV cannulas.
The initial focus is on catheter types where a passive, visible coating signal could support routine monitoring during pre-clinical development.
Central venous catheters
CVCs can remain in place for extended periods and are used in high-risk clinical settings such as ICU, oncology, and dialysis.
Peripheral IV cannulas
Peripheral IV cannulas are high-volume devices used across general wards, emergency care, and outpatient settings.
How it works
Four steps from surface to signal.
The mechanism is presented at a public-facing level while keeping the research-stage framing clear.
01
Coated surface
A pH-sensitive polymer coating is applied to the catheter surface near the region being monitored.
02
Microbial activity
Microbial colonisation can alter the local chemical environment around the coated surface.
03
Colour shift
The embedded dye mixture is designed to change colour in response to pH changes linked to microbial activity.
04
Visible alert
The colour change is intended to be visible on the catheter segment outside the body during routine checks.