Circular Knife Helmut Zepf, Dentist, Bone Graft, Maxillofacial Surgery (47.520.24) - Delynov

What is the Helmut Zepf 47.520.24 circular knife?

The Helmut Zepf circular knife, referenced under code 47.520.24, is a specialized manual instrument for bone surgery. Manufactured by Helmut Zepf Medizintechnik GmbH, this device is designed in high-quality medical stainless steel to ensure optimal resistance during mechanical stress. Its structure is specifically studied to perform precise circular incisions in hard tissues. As a Class I instrument, it meets the safety requirements for non-invasive or invasive medical devices for temporary use. This knife is delivered non-sterile and requires a complete cleaning, disinfection, and sterilization protocol before its first use and after each surgical procedure.

What are the clinical indications for this manual trephine?

This manual dental trephine is primarily indicated in bone grafting procedures and maxillofacial surgery. Its main role is to allow the dental surgeon or oral surgeon to perform precise bone harvesting. It is particularly useful when creating autogenous bone cores intended to fill alveolar defects or to reinforce a site before implant placement. The instrument is designed for manual handling, offering increased tactile control during cortical penetration. It is reserved exclusively for healthcare professionals trained in oral surgery techniques, ensuring use in accordance with current clinical protocols for bone volume reconstruction.

What are the technical characteristics of the circular knife?

The Helmut Zepf circular knife is distinguished by its medical stainless steel design, a material chosen for its biocompatibility and its ability to withstand repeated sterilization cycles. Referenced under technical code 47.520.24, this instrument features a sharpened circular working end allowing for a clean cut without excessive heating of the surrounding tissues, unlike motorized rotary instruments. Its ergonomic design allows for efficient transmission of manual force. The manufacturer states that due to the quality of the materials used, there is no defined maximum limit for the number of processing cycles, provided that the integrity of the instrument is verified before each use (absence of cracks or defects on the cutting edges).

What are the contraindications for the use of this instrument?

The main medical contraindication related to the use of this Helmut Zepf circular knife is known hypersensitivity or intolerance of the patient to metals, and more particularly to the components of medical stainless steel. Contact with the instrument can trigger a hypersensitivity reaction in sensitive subjects. The manufacturer, Helmut Zepf Medizintechnik GmbH, stipulates that the procedure must be immediately interrupted if such a reaction occurs, and that necessary medical measures must be taken accordingly. It is therefore imperative to validate the patient's anamnesis regarding metal allergies before any surgical intervention using this manual instrument.

What are the maintenance and sterilization precautions?

Like any precision surgical instrument, the circular knife must be subject to rigorous maintenance. All Helmut Zepf instruments are delivered non-sterile. They must imperatively be cleaned, disinfected, and sterilized before the first use, and then after each subsequent use. It is crucial to visually inspect the product before each intervention to detect any damage or signs of wear, such as cracks, breaks, or defects on the cutting edges. The use of damaged or worn products is strictly prohibited. Reprocessing must follow standard hospital or dental office sterilization protocols to ensure asepsis and maintain the cutting performance of the stainless steel.

Who is the manufacturer and what standards are respected?

The device is manufactured by Helmut Zepf Medizintechnik GmbH, a recognized company located in Seitingen-Oberflacht, Germany. This circular knife is a manual dental instrument classified as Class I according to medical device regulations. The manufacturer ensures the compliance of its products with safety and performance requirements. The materials used and the design of the instrument are intended for strict professional use by qualified practitioners. Although the specific CE marking is not detailed in the provided sources, the Class I status and compliance with German manufacturing directives guarantee a high level of quality and traceability for bone grafting and oral surgery interventions.

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