A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/44 (2006.01) A61F 2/46 (2006.01)
Patent
CA 2575383
A degenerated nucleus pulposus located in a central core (110) region of an intervertebral disc (106) within the annulus fibrosus (108) is supplemented or replaced by a method wherein an amount of a biocompatible material is introduced into the central core region by a process including the steps of 1) forming a channel (116) through a vertebral body (102) adjacent to said intervertebral disc, extending from an exterior surface of the vertebral body to the central core region of the annulus fibrosus; 2) introducing an amount of a biocompatible material through the channel into the central core region of the annulus fibrosus; 3) pressurizing the biocompatible material through the channel to a postsurgical pressure sufficient to alleviate symptoms caused by the degenerated nucleus pulposus; and 4) sealing the channel while maintaining the sufficient postsurgical pressure.
Cette invention a pour objet un nucleus pulposus, situé dans la région de l~axe central (110) d~un disque intervertébral (106) au sein de l~anneau fibreux (108), complété ou remplacé en procédant à l~introduction d~une certaine proportion d~une substance biocompatible dans la région de l~axe central en suivant un procédé incluant plusieurs étapes : la formation d~un canal (116) traversant l~élément vertébral (102), contigu avec ledit disque intervertébral, s~étirant depuis une surface extérieure de l~élément vertébral jusqu~à la zone de l~axe central de l~anneau fibreux ; 2) l~introduction d~une certaine proportion de substance biocompatible, par ce canal, dans la région de l~axe central de l~anneau fibreux ; 3) la pressurisation de la substance biocompatible par le canal, à une pression post-opératoire suffisante pour permettre de minimiser les symptômes du nucleus pulposus dégénéré ; et 4) la fixation du canal tandis que la pression post-opératoire minimale est maintenue.
Keane Michael F.
Schaer Thomas P.
Vresilovic Edward
Osler Hoskin & Harcourt Llp
Synthes (u.s.a.)
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