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SURGICAL ASSEMBLY, BONE ANCHORING SCREW AND DEVICE FOR EXTENSION OF SUCH SCREWS FORMING PART OF SAID SURGICAL ASSEMBLY
专利权人:
SPINEWAY
发明人:
STEPHANE LE ROUX,PHILIPPE PIERRE LAURITO,JULIEN BAZILLE
申请号:
FR1452299
公开号:
FR3018678A1
申请日:
2014.03.20
申请国别(地区):
FR
年份:
2015
代理人:
摘要:
The surgical assembly (1) comprises: - a bone anchoring screw (2) having an anchoring portion (2a) in the spine and a head in the form of a sleeve (2b), and; - an extension device (3) intended to cap the sleeve (2b) of the bone anchoring screw (2) to achieve a longitudinal extension; said extension device (3) comprises a first tubular element, called an inner tube (4), of internal diameter greater than or equal to the internal diameter of the sleeve (2b) of the bone anchoring screw (2), and extending longitudinally by two branches (4a) diametrically opposed, forming a clamp capable of pinching the outer surface of the sleeve (2b) to lock thereon; - The extension device (3) comprises a second tubular element, said outer tube (8), slidably mounted along said inner tube (4), the outer tube (8) extending longitudinally by two branches (8a) whose ends are facing the free ends of the two branches (4a) of the inner tube (4), and each comprise retaining means (9) adapted to cooperate with complementary retaining means (9a) arranged on the sleeve (2b) for preventing said legs (8a) and the legs (4a) from moving apart from one another so as to allow the locking of the extension device (3) to remain on the bushing (2b) of the screw bone anchorage (2). L'ensemble chirurgical (1) comprend : - une vis d'ancrage osseux (2) présentant une partie d'ancrage (2a) dans la colonne vertébrale et une tête sous forme d'une douille (2b), et ; - un dispositif d'extension (3) destiné à venir coiffer la douille (2b) de la vis d'ancrage osseux (2) pour en réaliser un prolongement longitudinal ; - ledit dispositif d'extension (3) comprend un premier élément tubulaire, dit tube interne (4), de diamètre interne supérieur ou égal au diamètre interne de la douille (2b) de la vis d'ancrage osseux (2), et se prolongeant longitudinalement par deux branches (4a) diamétralement opposées, formant une pince apte à pincer la surface externe de la douille (2b) pour se verro
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中国工程科技知识中心
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