01 / Engineering Tools
Medical Device
Engineering Tools
Practical calculators, guided specification tools, and engineering references for medical-device development.
Utility preview
French size
6 Fr
→ 2.000 mm OD
Accelerated aging
64.5
DAYS / APPROX.
Step 01 / 07
Catheter Type
Guided specification workflow
02 / Tool Workspace
Choose a tool. Start with the engineering question.
Select a currently available utility to preview its purpose and open the full tool.
French size
Outside diameter
mm = Fr ÷ 3 · French size describes outside diameter
Dimensional conversion
French to Millimeters
Convert between French size and millimeters for catheter and medical-tubing outside diameter.
French Sizing Reference →03 / Measurement
A simple relationship, made immediately usable.
French size measures outside diameter. One French unit equals one-third of a millimeter.
6 Fr
=
2.000 mm OD
Outside diameter
04 / Aging Calculation
Translate an aging assumption into an accelerated test duration.
The calculator supports planning using ASTM F1980-21 reference methodology. Inputs and assumptions must be appropriate to the product, material system, and protocol.
Q10 = 2 is a common conservative assumption but requires justification.
Real-time aging remains required.
Desired real time
Q10 aging factor
Room temperature
Aging temperature
Approx. accelerated aging time
64.5 days
AAF ≈ 5.657 · ASTM F1980-21 reference methodology
06 / Technical References
Tools for the calculation. References for the context.
Reference 001
French Sizing for Catheter Tubing
Outside-diameter measurement, conversion relationship, and technical context.
Read Reference →Engineering + Program Support
Need more than
a calculator?
Cordica engineering and manufacturing teams can support the broader device-development and production conversation.