Trephine. Internal diameter 10.0 MM - Helmut Zepf (08.910.12) - Delynov

What is the Helmut Zepf 10mm trephine?

The 10mm trephine from the Helmut Zepf brand is a precision rotary instrument designed for bone and implant surgery. This device, identified under reference 08.910.12, has an internal diameter of 10.0 mm, allowing for the creation of calibrated bone cores. Manufactured by Helmut Zepf Medizintechnik GmbH, this tool is intended to be attached to a surgical contra-angle to perform circular osteotomies. Its structure is optimized for harvesting autogenous tissue or removing osseointegrated implants, ensuring a standardized intervention in a clinical setting.

What are the clinical indications?

The clinical indications for this Helmut Zepf trephine primarily include harvesting cylindrical bone blocks from the jaw, intended for grafting at other sites or processing via a bone mill for filling procedures. In implantology, it is specifically indicated for the explantation of implants when conventional removal is no longer possible. The instrument allows the implant to be cleared by precisely milling the peripheral bone. The choice of trephine must imperatively correspond to the diameter of the desired bone block or the diameter of the implant to be removed to ensure the success of the intervention.

What are the technical characteristics?

This Class IIa medical device is characterized by an internal diameter of 10.0 mm (technical reference 08.910.12). It is designed to operate with a surgical motor set to a speed range from 800 rpm to a maximum of 1000 rpm. The instrument requires abundant and continuous irrigation with a sterile physiological saline solution, which can be administered manually or via the contra-angle cooling system. Its design allows for smooth in-and-out movements during drilling to avoid any thermal overheating of surrounding tissues or jamming of the instrument in the cavity.

What are the contraindications for use?

Although the manufacturer Helmut Zepf Medizintechnik GmbH does not list specific medical contraindications in the provided documentation, the use of this trephine is subject to strict compliance with surgical protocols. Excessive pressure during drilling is prohibited to avoid any tissue damage or instrument breakage. Furthermore, it is imperative never to stop the motor while the trephine is inserted in the surgical cavity, as this could block the extraction of the tool or cause it to fracture, leading to operative complications for the patient.

What are the precautions for use during the intervention?

When handling for bone block harvesting or explantation, the practitioner must maintain continuous insertion and extraction movements. Irrigation is a critical factor: it must be abundant and sterile to prevent thermal necrosis of the bone. For explantation, the speed must be precisely adjusted between 800 and 1000 rpm. Particular attention must be paid to the pressure exerted, which must never be excessive. Finally, the removal of the trephine from the surgical area must always be carried out while the motor is rotating to ensure safe extraction and preserve the integrity of the instrument.

Who is the manufacturer and what standards are respected?

The device is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized manufacturer located in Seitingen-Oberflacht, Germany. This 10mm trephine is classified as a Class IIa medical device according to current regulations (MDC0483). Compliance with these standards ensures that the instrument meets the safety and performance requirements for oral and implant surgery interventions. As a Helmut Zepf product, it benefits from the expertise of a manufacturer specialized in high-precision instrumentation for oral health professionals.

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