TREPAN. INTERNAL DIAMETER 5.0 MM - Helmut Zepf (08.910.13) - Delynov

What is the Helmut Zepf 5mm trephine?

The Helmut Zepf 5mm trephine (reference 08.910.13) is a surgical rotary instrument designed for bone harvesting and explantation procedures. This precision device features an internal diameter of 5.0 mm, allowing for the creation of perfectly calibrated cylindrical bone blocks. Manufactured by Helmut Zepf Medizintechnik GmbH, this tool is specifically developed to meet the requirements of oral and implant surgery. Its structure is optimized for attachment to a contra-angle, providing the necessary stability during drilling or milling phases in the dense tissues of the jaw. As a Class IIa medical device, it meets the safety and performance standards required for short-term invasive interventions.

What are the clinical indications?

The clinical indications for this Helmut Zepf 5mm trephine primarily include the harvesting of autogenous bone grafts. The practitioner can thus obtain bone cylinders from intra-oral donor sites for localized augmentations or for subsequent processing in a bone mill. Another major indication concerns the explantation of implant devices. In this context, the trephine allows for the release of the implant from its bone anchorage with controlled peripheral substance loss. The choice of the 5.0 mm internal diameter must be strictly correlated to the diameter of the implant to be removed or the size of the bone tissue block desired for the graft, thus ensuring the match between the instrument and the surgical objective.

What are the technical characteristics?

The Helmut Zepf trephine is characterized by an internal diameter of 5.0 mm, identified under technical reference 08.910.13. It is designed to be used with a surgical motor set to a specific rotation speed. To obtain bone blocks, the recommended speed is between 800 rpm and a maximum defined by the device, while for explantation, it must be maintained between 800 rpm and 1000 rpm maximum. The instrument requires abundant and continuous irrigation with sterile physiological saline solution, which can be administered manually or via the contra-angle cooling system. Its design allows for smooth entry and exit movements, essential for avoiding thermal overheating or mechanical blockage during the milling process.

What are the contraindications for use?

Although the manufacturer Helmut Zepf Medizintechnik GmbH does not list specific medical contraindications related to the material in the provided documentation, the use of the trephine is subject to strict technical constraints to avoid clinical incidents. Excessive pressure during treatment is formally discouraged. Furthermore, it is imperative never to stop the motor as long as the trephine is inside the surgical cavity. Failure to follow this instruction may prevent the removal of the instrument or, in the most serious cases, cause it to break inside the bone. Use is also contraindicated if irrigation conditions are not optimal, as this could lead to thermal necrosis of the surrounding tissues.

What are the precautions for use and handling?

Handling the 5mm trephine requires a rigorous technique to ensure patient safety. The drilling process must be performed with continuous insertion and withdrawal movements under abundant saline irrigation. This irrigation is crucial for cooling the bone-instrument interface. The practitioner must ensure the trephine diameter is chosen based on the exact dimension of the implant to be extracted or the bone volume required. During application, particular attention must be paid to the pressure exerted, which must never be excessive. Finally, maintaining motor rotation until complete exit from the cavity is a major precaution to prevent any breakage of the Helmut Zepf instrument or any accidental blockage.

Who is the manufacturer and what standards are respected?

This device is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized company located in Seitingen-Oberflacht, Germany. The 5mm trephine is a certified Class IIa medical device, in accordance with European medical device regulations (MDC0483). This classification confirms that the product meets strict requirements regarding design, manufacturing, and clinical safety for use in dental and implant surgery. Helmut Zepf's traceability and manufacturing quality provide dental surgeons with a reliable instrument for their daily bone harvesting and explantation procedures, respecting the highest safety standards in the medical sector.

State of the art

Surgical medical consumables play a decisive role in operative safety.