Inner diameter 5.0 mm Trephine - Helmut Zepf (08.910.13S) - Delynov

What is the Helmut Zepf trephine with a 5.0 mm internal diameter?

The trephine (reference 08.910.13S) designed by Helmut Zepf Medizintechnik GmbH is a surgical rotary instrument intended for the circular cutting of hard tissues. This device features a specific internal diameter of 5.0 mm, allowing for the creation of precise cylindrical bone cores or blocks. Manufactured according to the quality standards of the Helmut Zepf brand, this instrument is classified as a Class IIa medical device. Its structure is optimized for use on a surgical contra-angle, providing a reliable solution for autogenous harvesting procedures or the removal of integrated implant material.

What are the clinical indications for this trephine?

This Helmut Zepf trephine is primarily indicated for two types of procedures in oral and implant surgery. Firstly, it allows for obtaining cylindrical bone blocks from the patient's jaw. These harvests can be directly repositioned at a recipient site or processed via a bone mill for guided bone regeneration. Secondly, the instrument is specifically indicated for the explantation of already integrated dental implants. In this case, the practitioner chooses the trephine based on the diameter of the implant to be removed in order to perform a minimal peripheral osteotomy facilitating its extraction.

What are the technical characteristics and usage parameters?

The Helmut Zepf 08.910.13S trephine has an internal diameter of 5.0 mm. For obtaining bone blocks, the manufacturer recommends attaching the instrument to a contra-angle and setting the surgical motor to a speed between 800 rpm and the maximum allowed by the device. For explantation procedures, the recommended speed range is between 800 rpm and 1000 rpm maximum. The drilling or milling process must be performed with continuous insertion and withdrawal movements, without applying excessive pressure, to ensure cutting efficiency and tissue preservation.

What are the contraindications for the use of this device?

The use of this trephine is strictly reserved for qualified healthcare professionals. Although the manufacturer Helmut Zepf Medizintechnik GmbH does not list specific clinical contraindications related to systemic pathologies in the provided documentation, use is contraindicated in the event of non-compliance with irrigation protocols. Stopping the motor while the trephine is still inserted in the surgical cavity is a critical handling error: this can prevent the removal of the instrument or cause it to break, leading to operative complications. Excessive manual pressure during drilling is also prohibited.

What are the operative and maintenance precautions?

Abundant irrigation with a sterile physiological saline solution is imperative during the entire drilling or milling process. This rinsing can be performed manually or via the contra-angle's irrigation system. This precaution is essential to avoid overheating the bone tissues. Regarding durability, the manufacturer states that there is no defined maximum limit for processing cycles (cleaning/sterilization), but the number of achievable cycles depends on the wear condition of the instrument, which must be checked by the professional before each intervention to guarantee optimal cutting performance.

Who is the manufacturer and what standards are respected?

The official manufacturer of this device is Helmut Zepf Medizintechnik GmbH, located in Seitingen-Oberflacht, Germany. This trephine is a Class IIa medical device, meeting strict regulatory requirements for rotary surgical instruments. As a Helmut Zepf product, it benefits from the expertise of a recognized manufacturer in the field of dental and surgical instrumentation. Compliance with technical parameters, particularly the recommended rotation speeds (800 to 1000 rpm depending on use), ensures use in accordance with the safety and clinical efficacy standards expected for this class of devices.

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