For the Perfect Cut

The use of minimally invasive surgical procedures has increased significantly in recent decades and is currently being used in various medical disciplines such as laparoscopy or thoracoscopy. In order to be able to perform these procedures, which are characterized by a lower stress on the patient’s body in comparison to conventional methods, special surgical instruments are needed. Above all, the small size of the surgical instruments challenges the manufacturer to achieve the desired dimensions of the devices in the μm range and the highest quality. The laser micromachining experts of GFH have therefore developed a method for producing micro three-knife trimmers for minimally invasive medical interventions quickly and economically using laser micro cutting.

The laser micro-machining experts at GFH GmbH have developed a method to rapidly and economically produce micro-three-knife trimmers for minimally invasive medical procedures using laser cutting. (Source: GFH)

“Our goal is to continually improve the properties of our laser micromachining equipment and to develop new procedures for their use in a wide variety of fields. Especially the production of medical instruments is an everlasting challenge because of the exceptionally high quality standards and the unconditional precision in production”, reports Anton Pauli, managing director of GFH. By using laser cutting combined with its high-precision system technology, GFH fulfills these requirements and is able to manufacture the desired products. In this case, iron and non-ferrous metals as well as non-metallic materials, such as ceramics or sapphire, can be cut up to a thickness of 1 mm.

Even the most recent project, a micro-trimmer for minimally invasive surgery, took advantage of this procedure. A special optical concept called GL.trepan allows to set the cutting angles flexibly, whereby the shaping on the cutting edge can be changed quickly and easily. As a result, for example, rectangular cuts in the micron range can be done without any need to be finished by an additional process step. “Using laser technology, very fine geometries can be realized without mechanical forces acting on the workpiece. In this way, on the one hand tool wear is prevented and on the other hand, the consistently high quality of the product is ensured,” reports Pauli.

The method also replaces individual work steps such as eroding or grinding by the laser technology. Furthermore, the laser processing allows the machining of flexible 3D cutting contours, what is important for the manufacture of the micro-three-knife trimmer. In sum this results in significant advantages in terms of production speed, precision, and exact reproducibility of the machining results, while maintaining consistently high quality. (Source: GFH)

Link: GFH GmbH, Deggendorf, Germany

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