With over 25 years of experience in mass finishing, OTEC Präzisionsfinish GmbH has established itself as a reliable partner for medical and pharmaceutical technology. Thanks to innovative technologies and customized processing methods, OTEC offers solutions that meet the highest demands for surface finishing, process reliability, and cost-effectiveness.

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PR Medical
Tablet tools
Dental Drills

Advantages of Mass Finishing:

• Reproducible precision and consistent quality
• Optimized surface roughness for hygienic, biocompatible surfaces
• Gentle processing without material deformation or microcracks
• Automation potential for consistent results in series production
• Efficient deburring and polishing for complex geometries like bone screws and catheter components

Advantages of Electro finishing:

• Perfect smoothing and high-gloss polishing for microscopically smooth surfaces
• No material loss, selective processing without dimensional changes
• Processing of hard-to-reach areas such as internal contours of instruments
• Preservation of cutting performance, especially for surgical tools
• No abrasive contact, ideal for delicate components

Implants

The lifespan of medical implants depends on surface processes. Mass finishing removes coarse machining marks on hip and knee joints, achieving surface roughness values as low as Ra = 0.01 μm. Micro-scratches are eliminated through electrofinishing, resulting in a high-gloss, biocompatible surface. Benefits include reduced wear, improved sliding properties, and extended implant lifespan

Complex Prosthetics

Complex geometries in coupled knee prosthetics benefit from both mass finishing and electrofinishing. Mass finishing reaches hard-to-access areas through precise motion control, while electrofinishing smooths surfaces, enhancing durability and sliding properties.

Bone Screws and Plates

For bone screws, Mass Finishing ensures sharp, burr-free edges and smooth surfaces. Complemented by electrofinishing, microscopic material peaks are removed, facilitating sterilization and preventing bacterial adhesion. For bone plates, the combination of Mass Finishing and Electro Finishing ensures strong edge rounding and homogeneous surfaces, supporting optimal fit and stress-free integration into the body.

Stents

The Electro Finishing process precisely and smoothly processes stents to maximize biocompatibility. Burr-free edges and mirror-smooth surfaces enhance safety, reduce platelet adhesion, and improve resistance to corrosive environments.
 

Impellers

Impellers used in heart pumps benefit from OTEC's customized technology. Drag finishing delivers the highest precision for complex geometries, while Electro Finishing creates smooth, mirror-like surfaces and minimizes deposits. This ensures maximum safety, efficiency, and stability—ideal for critical applications.

Medical Instruments and Tools

OTEC offers innovative solutions for the surface finishing of medical instruments and tools. With specially tailored processes, burrs are removed, and surfaces are smoothed while maintaining sharp cutting edges. This minimizes the risk of tissue or blood adhesion and prevents metal residues from entering wounds. OTEC machines ensure reproducible processes, homogeneously smooth surfaces, and reduce the need for manual rework to an absolute minimum.

Surgical Drills

The OTEC SF-Series ensures precise burr removal and maximum sharpness of surgical drills. Combined with the EF-Series, Electro Finishing provides additional surface smoothing, removing microscopic irregularities. Benefits include improved hygiene through easier-to-clean surfaces, increased corrosion resistance, and extended drill lifespan. With OTEC Technologies, manufacturers benefit from process reliability, efficiency, and consistently high quality.

Ear molds, in-ear headphones

OTEC offers innovative solutions for the precise surface finishing of otoplastics. The rough surfaces resulting from additive manufacturing or machining are efficiently smoothed, finely ground, and polished using disc finishing machines. The geometry remains fully intact, ensuring a perfect fit and high wearing comfort.
A key advantage of OTEC machines is the significant reduction of manual pre- and post-processing, which greatly lowers unit costs. Additionally, machine processing guarantees reproducible results and gentle treatment of components.
 

Advantages of OTEC Technologies:

• Consistently high quality and reproducible processes.
• Extended tool life.
• Efficient polishing of up to 80 punches in just 30 minutes.
• Machine and material adaptation to pharmaceutical standards.
• Special process media and suitability for gray production areas.