DRILL. INTERNAL DIAMETER 4.8 MM - Helmut Zepf (08.910.07) - Delynov

What is the Helmut Zepf 4.8 mm trepan?

The Helmut Zepf trepan, referenced under code 08.910.07, is a specialized surgical rotary instrument for oral surgery. This 4 8mm trepan features a specific internal diameter allowing for the creation of cylindrical bone cores. Manufactured by Helmut Zepf Medizintechnik GmbH, this Class IIa medical device is designed to be mounted on a surgical contra-angle. Its structure is optimized for the circular cutting of hard tissues, providing practitioners with a reliable tool for bone reconstruction procedures or removal of implant material. Its design allows for repeated use after sterilization, in accordance with current protocols for rotary instruments in this category.

What are the clinical indications for this 4 8mm trepan drill?

This implant trepan is primarily indicated for two major procedures in oral surgery. On one hand, it is used to obtain cylindrical bone blocks harvested directly from the patient's jaw. These harvests can be reused as-is for onlay grafts or processed in a bone crusher for filling. On the other hand, it constitutes an essential tool for the explantation of integrated dental implants. The 4.8 mm internal diameter must be rigorously selected by the surgeon based on the diameter of the implant to be removed or the size of the desired graft to ensure the success of the clinical intervention.

What are the technical characteristics and operating parameters?

The Helmut Zepf trepan (ref. 08.910.07) has an internal diameter of 4.8 mm. For optimal and safe use, the manufacturer Helmut Zepf Medizintechnik GmbH recommends setting the surgical motor to a rotation speed between 800 rpm and a maximum of 1000 rpm. The drilling or milling process must imperatively be accompanied by continuous insertion and withdrawal movements (pumping movement). This technique, coupled with abundant irrigation with sterile physiological saline solution, limits thermal heating of the surrounding bone tissues. Irrigation can be performed manually or via the internal cooling system of the contra-angle.

What are the contraindications for the use of this trepan?

Although the technical text does not list specific medical contraindications related to the material, the use of this trepan is subject to strict compliance with surgical protocols. Excessive pressure during drilling is prohibited to avoid any risk of thermal necrosis or instrument fracture. Furthermore, it is imperative never to stop the motor rotation as long as the trepan is inside the surgical cavity. Premature stopping of the motor could jam the instrument in the bone, making its removal difficult or causing a rupture of the working part, which would constitute an avoidable surgical complication.

What are the handling precautions during surgery?

When using this 4 8mm trepan, the management of pressure and temperature is crucial. The practitioner must ensure not to apply lateral force to prevent instrument breakage. Physiological rinsing must be constant and generous. To obtain bone blocks, the choice of diameter must correspond exactly to the desired tissue volume. For explantation, the diameter must be adapted to that of the implant. Compliance with rotation speeds (800 to 1000 rpm) ensures a clean cut while preserving the integrity of adjacent anatomical structures. Post-operative maintenance of the instrument must follow standard recommendations for Class IIa rotary devices.

Who is the manufacturer and what standards are met?

This device is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized manufacturer located in Seitingen-Oberflacht, Germany. This trepan is classified as a Class IIa medical device according to current European regulations (MDC0483). As a Helmut Zepf product, it benefits from the expertise of a manufacturer specialized in high-precision surgical instrumentation. Compliance with Class IIa ensures that the instrument meets strict safety and performance requirements for short-term invasive interventions. Professionals can refer to the manufacturer's technical instructions for details regarding sterilization and product traceability.

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