Applications

Reliability & precision

The optical sensors of the CHRocodile series makes non-contact and high-precision distance and layer gauge measurement of medical components possible. For example, the exact wall strength of medical balloons is of great importance for the success of the therapy. It is even important to be as precise as possible when processing eye glasses glass and contact lenses. CHRocodile sensors measure glass thickness and the thickness of the anti-scratch coating on the glasses. In the area of packaging, the high-quality requirements for foils, blister, molds and violens are monitored with our precision measuring technology. The sensors been proven useful in many other areas of medical application, e.g. for high-precision measurement of artificial hip and knee joints as well as stints.

Applications
CHRocodile M4
Wall strength measurement of medical packaging

Medical packaging like bottles, syringes or blisters have to meet strict demands. The wall strength of the material is often one of the important quality requirements. CHRocodile sensors work well to easily, quickly and precisely measure this. It determines the wall thickness reliably, even colored packaging like dark brown glass bottles. Due to its advanced design, the sensor can be implemented into existing production environments quickly and easily or used offline for measurements in the laboratory. Depending on the thickness and transparency of the material, an interferometric or chromatic probe may be recommended to perform the high speed measurements.

CHRocodile E
Balloon catheter thickness measurements

Balloon catheters are used in numerous medical applications. To handle the demands on their wall strength, it is important to know that they have been manufactured with the appropriate wall thickness in several regions. The CHRocodile E or SE sensor with interferometric probe is able to measure the wall thickness at 4kHz. The non-contact measurement can be performed with or without pressure in the balloon. It provides a fast and reliable measurement of the single wall thickness, without the averaging used by other techniques such as a drop gauge. All areas of the balloon are able to be measured with the proper fixturing.

CHRocodile S / SE
Contact-free 3D measuring systems for endoprostheses

The complex, multi-curved geometries of endoprostheses have tolerances between a few microns up to several hundred microns. Their highly reflective surfaces pose considerable problems for optical measuring systems. The surfaces of the material pairs must be produced in the required quality. Here ultra high molecular polyethylene and metals or ceramic on the other side are used. If parts with these sizes are to be measured in 3D, you need sensors that can record the very different surfaces without losing accuracy. The high apertures of chromatic confocal optical probes ensure that sufficient light from the highly reflective free form surfaces reaches the sensor. Retrieval analysis is an important area of activity as well as quality assurance in production. These analyses are mainly used to understand why wear occurs. Using prostheses that have recently failed in use and have not reached their estimated service life, they try to find the causes.

CHRocodile S / SE
Measuring liquid layers and liquid levels

In medical engineering, the oil thickness on hoses of injection needles or venous catheters is important. The thickness of the oil layer can thus be determined using contact-free optical measuring systems. This layer thickness can be determined within a few microns. Should the objects not be evenly moistened, the places with or without oil can be detected. This technique has also been proven when pipetting microtiters. If these are filled automatically, a confocal sensor can measure the distance between the sensor and the liquid surface in another also automated step. The fill quantities for larger runs can be very quickly calculated from this measurement. 

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