A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/70 (2006.01)
Patent
CA 2345744
A device for connecting an elongated support (1) to a bone fixation means (2) comprising a ball-head (21), comprising (A) a cylindrical body (3) fitted with a downwardly open, compressible spherical chamber (34) receiving the ball-head (21), further with a thread (35) coaxial with the central axis (33) to receive a tightening means (4), and a borehole (36) running transversely to the central axis (33) to receive the elongated support (1); (B) a lower hollow cylinder (5) configured concentrically with the body (3) and which can be slipped over the lower part (72) whereby the lower part (72) comprising the chamber (34) shall be compressible; (C) an upper hollow cylinder (6) configured concentrically with the body (3) and fitted with a feedthrough aperture (61) running perpendicularly to the central axis (33) and corresponding to the borehole (36) and being open in the downward direction, where (D) means (85) are provided at the lower end (84) of the upper hollow cylinder (6) and/or at the upper end (83) of the lower hollow cylinder (5), said means producing at least a third contact site in addition to two contact sites of an elongated support (1) inserted in the borehole (36) and the feedthrough aperture (61) between the adjacent end faces (81; 82).
L'invention concerne un dispositif comprenant A) un corps cylindrique (3) qui présente d'une part une chambre (34) pouvant être comprimée, ouverte vers le bas, servant à recevoir la tête sphérique (21) d'un moyen de fixation d'os (2), d'autre part un filetage (35) s'étendant de manière coaxiale à l'axe central (33) et servant à recevoir un moyen de serrage (4), ainsi qu'un orifice (36) s'étendant transversalement à l'axe central (33); B) un cylindre creux inférieur (5) pouvant être poussé sur la partie inférieure (72) de façon à comprimer la chambre (34); C) un cylindre creux supérieur (6) comportant une ouverture de passage (61) ouverte vers le bas et correspondant à l'orifice (6); D) des moyens (85) formant entre les cylindres creux (5, 6), outre deux points de contact d'un support longitudinal (1) introduit dans l'orifice (36) et dans l'ouverture de passage (61), au moins un troisième point de contact.
Hess Martin
Schlapfer Fridolin
Osler Hoskin & Harcourt Llp
Synthes (u.s.a.)
Synthes Usa Llc
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