TREPAN. INTERNAL DIAMETER 4.0 MM - Helmut Zepf (08.910.05) - Delynov

What is the Helmut Zepf 4mm trephine?

The 4mm trephine from the Helmut Zepf brand is a surgical rotary instrument specifically developed for the circular cutting of hard tissues. This device, bearing reference 08.910.05, features an internal diameter of 4.0 mm, allowing for the extraction of bone cores of a precise diameter. Its structure is designed to offer a clean cut while facilitating the evacuation of bone debris during rotation. As an instrument in the technical consumable category, it meets the precision requirements of practitioners specializing in implant and oral surgery, guaranteeing compatibility with standard surgical contra-angle systems.

What are the clinical indications for this 4mm trephine drill?

The 4mm trephine drill is primarily indicated in autogenous bone harvesting protocols, where the recovery of an intact bone cylinder is necessary for onlay grafts or sinus augmentations. In implant surgery, it is used for the preparation of bone sites or for the explantation of integrated devices when clinically required. It is also useful in oral surgery for exposing impacted teeth or creating access windows during cystectomies. Its 4.0 mm internal diameter dimension makes it a versatile tool for interventions requiring calibrated circular bone excision.

What are the technical characteristics of the 08.910.05 trephine?

The trephine referenced 08.910.05 by Helmut Zepf is distinguished by its strict internal diameter of 4.0 mm. This dimension is crucial for the practitioner to accurately predict the harvest volume or the extent of the osteotomy. The instrument is designed to be mounted on a surgical motor, supporting the rotation speeds recommended for bone cutting without excessive heating. The design of the working part allows for stable axial penetration, reducing the risk of deviation during the start of drilling. The surface finish and manufacturing quality from Helmut Zepf Medizintechnik GmbH ensure mechanical resistance adapted to the constraints of bone surgery.

What are the contraindications for the use of this instrument?

Contraindications for the use of the Helmut Zepf trephine are related to the physiological and clinical limits of the intervention area. Its use is prohibited in cases of insufficient residual bone volume to guarantee the safety of adjacent anatomical structures, such as the inferior alveolar nerve or maxillary sinuses, if the drilling depth cannot be controlled. Additionally, like any rotary instrument, it must not be used on tissues presenting uncontrolled acute infectious pathologies. The practitioner must ensure the absence of general medical contraindications in the patient relating to invasive surgery or local anesthesia.

What are the maintenance and usage precautions?

To maintain the cutting efficiency of the 4mm trephine, abundant and continuous irrigation with sterile physiological saline is imperative during drilling to avoid any thermal necrosis of the bone. After each use, the instrument must follow a strict protocol of decontamination, cleaning, and sterilization, in accordance with the instructions from the manufacturer Helmut Zepf Medizintechnik GmbH. It is recommended to visually inspect the condition of the cutting edges before each intervention; a blunt trephine or one showing signs of wear must be replaced to guarantee patient safety and the precision of the surgical procedure.

Who is the manufacturer and what standards are respected?

This device is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized manufacturer in the field of high-precision surgical and dental instrumentation. Although the specific regulatory class and CE marking are not detailed in the current technical sheet, Helmut Zepf products are generally designed according to the rigorous quality standards applicable to medical devices in Europe. To obtain precise information on MDR classification or compliance certifications for reference 08.910.05, it is advised to systematically refer to the instructions for use provided by the manufacturer or to contact the Delynov technical service.

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