Technical data:

• What was needed: Perimeters, devices that measure the field of vision and determine the sensitivity of the visual system
• Requirements: 100% lubrication and maintenance-free, hygienic for the medical sector, small installation space
• Products used: drylin® N low-profile guide system, dryspin® trapezoidal threaded spindles with matching sliding thread nut
• Success for the customer: A perimeter that easily fulfils the hygienic requirements. The igus® solution guarantees lubrication-free adjustments and requires no maintenance. Dust and dirt cannot adhere.

All individual components used in medical devices must meet special requirements. Use in hygiene-sensitive areas is always special. In medical technology, metallic lead screw nuts continue to be the norm. However, they mostly require frequent maintenance and lubrication. In this process, dust and dirt particles can easily stick to the used lubrication. This leads to considerable contamination and a significantly higher wear compared to a system that works in dry operation.  Furthermore, the metallic lead screw nuts can corrode quickly in humid environments.

The igus® solutions have also proven themselves in the perimeter. By using the trioblogically optimised iglidur® high-performance polymers, dust and dirt cannot adhere to the screw drive. And the dryspin® technology is also one step ahead in humid environments: it is 100 % corrosion-free. This guarantees smooth running throughout the entire application. This enables easy feed-through of the entire range of tests, from rapid screening tests to manually controlled kinetic tests. In addition, the PTS 2000 perimeter has one of the world's largest selections of visual field tests and all colours and stimulus sizes used in perimetry. With modern and intuitive software, the tests are carried out quickly and conveniently.