Device for delivering a biomaterial

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/46 (2006.01) A61B 17/88 (2006.01) A61M 25/00 (2006.01) A61F 2/28 (2006.01)

Patent

CA 2460427

The invention concerns a device for delivering small beads of a biomaterial in a specific part of a bone. It comprises: a cylindrical hollow body (10) of internal diameter D1 having a first end (24) for filling and a second end (16) provided with fastening means; a guide rod (50) forming a closure element including a cylindrical running part of external diameter D2 and having an enlarged cylindrical portion (56) designed to co-operate with the body fastening means; and a piston (30) consisting of a cylindrical piece (32) having an external diameter D3 and an axial bore (34) of diameter D4, diameter D3 being slightly smaller than the internal diameter D1 of the body and the internal diameter D4 being slightly larger than the diameter D2 of the rod (50) so that, after being unfastened, said rod can slide inside said piston and the piston can slide inside said body.

L'invention concerne un dispositif de mise en place de petites sphères d'un biomatériau dans une partie déterminée d'un os. Il comprend : un corps creux cylindrique (10) de diamètre interne D1 ayant une première extrémité (24) de remplissage et une deuxième extrémité (16) munie de moyens de clipsage (22) ; une tige guide (50) formant obturateur comprenant une partie courante cylindrique de diamètre externe D2 et présentant une portion cylindrique élargie (56) apte à coopérer avec les moyens de clipsage du corps; et un piston (30) constitué par une pièce cylindrique (32) présentant un diamètre externe D3 et un alésage axial (34) de diamètre D4, le diamètre D3 étant légèrement inférieur au diamètre interne D1 du corps et le diamètre interne D4 étant légèrement supérieur au diamètre D2 de la tige (50) de telle manière que, après déclipsage, ladite tige puisse coulisser à l'intérieur dudit piston et que le piston puisse coulisser dans ledit corps.

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