TREPHINE. INTERNAL DIAMETER 1.7 MM - Helmut Zepf (08.910.01)

What is the Helmut Zepf 1.7 mm trephine?

The 1.7 mm trephine from the Helmut Zepf brand is a specialized rotary surgical instrument designed for the precise circular cutting of hard tissues. This device, identified under reference 08.910.01, has an internal diameter of 1.7 mm, making it particularly suitable for procedures requiring high harvesting precision. Manufactured by Helmut Zepf Medizintechnik GmbH, this instrument belongs to the category of Class IIa surgical consumables. Its structure is optimized for use on a contra-angle, allowing controlled penetration into the maxillary or mandibular bone to collect bone cores or clear integrated implant structures.

What are the clinical indications for this 1.7mm trephine?

Clinical indications for this 1.7mm trephine primarily include implant surgery and bone reconstruction. According to data from the manufacturer Helmut Zepf, this instrument is used to obtain cylindrical bone blocks harvested directly from the patient's jaw. These samples can then be transplanted to other surgical sites or processed via a bone crusher for filling procedures. Another major indication concerns explantation: the trephine allows for the outlining of an implant whose removal is necessary, thus facilitating its extraction while minimizing peripheral bone loss thanks to its calibrated internal diameter.

What are the technical characteristics and operating parameters?

Technically, this trephine drill 1 7mm (reference 08.910.01) must be used with a precisely set surgical motor. For obtaining bone blocks, the manufacturer recommends a rotation speed between 800 rpm and a maximum defined by the device, while maintaining continuous insertion and extraction movements. For explantation procedures, the recommended speed is between 800 rpm and 1000 rpm maximum. The instrument requires abundant and constant irrigation with sterile physiological saline solution, either manually or via the contra-angle cooling system, to prevent any thermal overheating of the surrounding bone tissues.

What are the contraindications for the use of this instrument?

Although the technical text does not list specific medical contraindications related to systemic pathologies, the use of the trephine is conditioned by strict adherence to surgical protocols. Excessive pressure during drilling is prohibited to avoid any risk of injury or instrument breakage. Furthermore, it is imperative not to stop the motor's rotation as long as the trephine is inside the surgical cavity. A premature stop can lock the instrument in the bone, making its removal difficult or causing metal breakage, which would constitute an avoidable surgical complication.

What are the handling precautions during surgery?

Handling the Helmut Zepf trephine requires particular vigilance regarding cooling and guidance. The practitioner must choose the trephine diameter based on the dimension of the target bone block or implant. During the drilling or milling process, abundant rinsing with saline solution is mandatory to evacuate debris and limit temperature rise. The movement must be fluid, alternating entries and exits to promote the evacuation of bone chips. It is reiterated that high pressure must not be applied; cutting efficiency relies on controlled rotation speed and the sharpness of the instrument rather than the force exerted by the operator.

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, in accordance with current regulations. As a recognized manufacturer in the field of dental and surgical instrumentation, Helmut Zepf guarantees rigorous manufacturing processes. Compliance with technical parameters (rotation speed, irrigation, absence of excessive pressure) is essential to maintain conformity with the manufacturer's intended use and ensure patient safety during bone harvesting or implant explantation procedures.

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