Trephine. Internal diameter 7.0 MM - Helmut Zepf (08.910.09F) - Delynov

What is the Helmut Zepf 08.910.09F trephine?

The Helmut Zepf trephine, bearing reference 08.910.09F, is a specialized rotary instrument designed for bone surgery. This surgical trephine has an internal diameter of 7.0 mm, making it suitable for harvesting bone cores of specific dimensions. Manufactured by Helmut Zepf Medizintechnik GmbH, this medical device belongs to the category of surgical consumables. Its structure is optimized for the circular cutting of hard tissues, allowing for the extraction of clean bone cylinders. It is primarily used in bone reconstruction protocols or during the removal of implantable devices. As a bone trephine drill, it is part of the arsenal for practitioners performing autogenous harvesting or complex corrective interventions in the maxillary or mandibular areas.

What are the clinical indications for this 7mm trephine drill?

This dental trephine is indicated for two main clinical applications in oral surgery. Firstly, it is used to create cylindrical bone blocks harvested directly from the patient's jaw. These blocks can then be used as they are for onlay grafts or inserted into a bone mill to obtain particulate filling material for subsequent treatments. Secondly, this instrument is specifically indicated for the explantation of already integrated implants. Its design allows it to pass around the implant to release surrounding tissues and facilitate its removal. The choice of this 7.0 mm internal diameter must be rigorously adapted to the diameter of the desired bone tissue block or the size of the implant to be removed according to the needs of the procedure.

What are the technical characteristics and operating parameters?

The Helmut Zepf bone trephine drill has strict technical specifications to guarantee its effectiveness. For obtaining bone blocks, the motor must be set to a speed between 800 rpm and a maximum defined by the device. During explantation, the recommended speed is between 800 rpm and 1000 rpm maximum. The drilling or milling process must be performed with continuous in-and-out movements. Abundant irrigation with sterile physiological saline solution is imperative to avoid tissue overheating. This rinsing can be manual or coupled with the contra-angle irrigation system. It is crucial not to apply excessive pressure during treatment and to keep the motor rotating as long as the trephine is inside the surgical cavity to avoid any blockage or breakage.

What are the contraindications for the use of this bone surgery trephine?

According to information provided by the manufacturer Helmut Zepf Medizintechnik GmbH, the use of this instrument is strictly reserved for qualified healthcare professionals. Although the source document does not list specific medical contraindications related to systemic pathologies, the use of the trephine is conditioned by technical handling. A major contraindication lies in stopping the motor while the instrument is still engaged in the surgical cavity, as this can prevent the removal of the trephine or cause it to break. Furthermore, the application of excessive pressure during drilling is prohibited to avoid intraoperative complications. The practitioner must ensure that the diameter of the instrument is perfectly adapted to the implant or the target bone volume before any intervention.

What are the precautions for use and limits of use?

Using the Helmut Zepf trephine requires compliance with rigorous cleaning and sterilization protocols between each use. The manufacturer states that there can be no defined maximum limit for the intended use, as the service life depends on the achievable treatment cycles which must be determined by the practitioner. It is essential to check the condition of the instrument before each intervention to ensure its cutting power. During the surgical act, maintaining a constant flow of sterile physiological saline solution is the main precaution to preserve the viability of bone cells and the integrity of the instrument. Compliance with the rotation speed ranges (800 to 1000 rpm depending on the act) is fundamental for patient safety and device longevity.

Who is the manufacturer and what standards are met?

The trephine is manufactured by Helmut Zepf Medizintechnik GmbH, headquartered in Seitingen-Oberflacht, Germany. This medical device is classified as Class IIa according to current regulations. The manufacturer ensures the compliance of its instruments with safety and performance requirements for use in a surgical environment. As a Class IIa product, it meets strict quality control and manufacturing criteria. Traceability is ensured by reference code 08.910.09F. This equipment is exclusively intended for healthcare professionals trained in oral surgery and implant techniques, thus guaranteeing an application consistent with clinical data and the instructions for use provided by Helmut Zepf.

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Surgical medical consumables play a decisive role in operative safety.