Indexing Washer

for insuline pen

  • Indexing Washer
    Indexing Washer

With plants at Kingswinford (West Midlands) and Nitra (Slovakia), private UK company Clamason Industries Ltd makes pressed metal, precision components for medical devices that go well beyond the more obvious pressed scalpel blades, probes, pins, rods and implants.

Such prestige projects include the highly complex indexing washer (with associated tooling) which allows the user to accurately dial and dispense the correct dosage of insulin on the new SoloStar® insulin pen, the first product to come out of the Sanofi-Aventis device development and production site at Frankfurt-am-Main.

Clamason gives high consistency of material, tolerance and surface finish over batches of millions produced at high speed. Applications across medical diagnostics and treatment can range from highly complex drugs delivery device assemblies to joint replacement componentry, from electric scalpels to disposable surgical instruments such as single-use hip reamers.

In particular, Clamason's pressings provide superior solutions for many plastics applications. Compared to metal pressings, plastics may suffer from shrinkage, joint line and RFI / EMI shielding problems, be degraded over time by heat, light and ultraviolet rays and hold lower dimensional tolerances. Plastics are hydroscopic (absorb water) and are gradually getting more expensive because of their oil content. What is more, unlike plastics, Clamason's metal stampings are recyclable in over 95% of cases.

Clamason parts are comprehensively process validated using DQ, IQ, OQ and PQ protocols. Its team is fully trained in URS, CAPA and GMP compliant with US FDA 21 CFR Part 820.