A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/60 (2006.01) A61B 17/80 (2006.01)
Patent
CA 2708972
The invention relates to a blocking ring (20) for a threaded holding pin (18) to be screwed into a portion of a bone (14), said ring including a first portion (22) having an axial bore (24) for receiving said holding pin, the periphery of said first portion being threaded so as to interact with a holding plate (12), wherein said ring is characterised in that the same further comprises, as an extension to said first portion, a second deformable portion (28, 44) having a thickness lower than the first portion and having a similar axial bore (30, 46), and in that the shearing of the pin (18) and the ring at the join between the first portion (22) and the second portion (28) deforms the remaining portion (34) of the second portion (28) of the blocking ring (22) towards the pin (18) in such a way as to block the pin (18) in relation to the blocking ring (22) by crimping.
L'invention concerne une douille de blocage (20) pour une broche (18) de maintien filetée destinée à être vissée dans une pièce osseuse (14), ladite douille comportant une première partie (22) ayant un alésage axial (24) pour recevoir ladite broche de maintien, la périphérie de ladite première partie étant filetée pour coopérer avec une plaque de maintien (12), ladite douille étant caractérisée en ce qu'elle dans le prolongement de ladite première partie, une deuxième partie (28) de plus faible épaisseur que la première partie et présentant un alésage axial (30) similaire, cette deuxième partie étant déformable et ainsi apte à bloquer, par déformation, ladite douille sur ladite broche.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Worcel Alexandre
LandOfFree
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