Precision at Every Scale:
Why Micro Screws Demand Macro Engineering
Most engineers recognise the PT®, DELTA PT® and EVO PT® as the industry benchmarks for large-scale thermoplastic assemblies. But when the application shrinks to the size of a medical-grade heart valve, the physics don't change; the stakes just get higher.
In a collaboration with a leading manufacturer of aortic heart valves, the challenge was clear: secure two delicate, medical-grade plastic components with a fixing that allowed for repeated servicing and absolute long-term stability.
The "Big Brother" Technology in a Micro Frame
It is a common misconception that micro-fixings are "simplified" versions of their larger counterparts. At EJOT, our micro screws are designed with the exact same thread-forming geometry as their "big brothers."- Thread Geometry: The specialised flank angles reduce radial stress, preventing bursting in thin-walled medical housings.
- Material Integrity: Manufactured in A4 stainless steel to meet stringent medical "clean" requirements.
- Serviceability: Engineered for high re-installation torque, ensuring the assembly remains secure even after multiple maintenance cycles.
Performance Proven Before the First Drill
To reduce the customer's R&D risk, our engineers utilised EJOT Calculation Software. This prognosis software provides highly accurate performance data, including clamp loads and torque ratios. Analytics that are available before physical testing even begins.When the customer conducted their own rigorous physical validation, the results perfectly matched the digital prognosis. By treating micro-applications with macro-engineering precision, EJOT eliminated the guesswork and drastically reduced the testing budget.
