Locking screw with synchronized thread

A bone fixation system includes a bone plate and a bone screw having a threaded head. The inner surface of the bone plate is adapted for facing a bone surface on which the plate is mounted. The outer surface of the bone plate faces away from the bone surface. A through opening extends from the inner...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BLUECHEL TOBIAS, MUERNER BEAT
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DIAGNOSIS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES SURGERY TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	A bone fixation system includes a bone plate and a bone screw having a threaded head. The inner surface of the bone plate is adapted for facing a bone surface on which the plate is mounted. The outer surface of the bone plate faces away from the bone surface. A through opening extends from the inner surface to the outer surface of the plate wherein the through opening comprises a guiding portion and a blocking portion. The guiding portion of the opening is provided with a guiding thread for guiding a thread of a shaft of the bone screw. The blocking portion is provided with a blocking thread for blocking a thread of the head of the bone screw. The blocking thread has a larger diameter than the guiding thread and the guiding portion is located closer to the inner bone plate surface than the blocking portion.