Instrumentation and method for delivering an implant into a...

Details Instrumentation and method for delivering an implant into a... Instrumentation and method for delivering an implant into a...

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61F 2/44 (2006.01) A61F 2/46 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2470196

Instrumentation (60, 100) and method for delivering an implant (50, 90, 90', 102, 102') into an intervertebral disc space (S), including a die member (70, 110) configured to transition the implant (50, 90, 90', 102, 102') from an initial configuration to a deformed configuration having a reduced lateral profile suitable for insertion into the intervertebral disc space (S) in a minimally invasive manner. In one embodiment, the die member (70, 110) includes an opening (72, 120) sized to receive the implant (50, 90, 90', 102, 102') while in the initial configuration, and wherein relative displacement between the implant (50, 90, 90', 102, 102') and the die member (70, 110) causes the implant (50, 90, 90', 102, 102') to transition toward the reduced- profile deformed configuration. In a specific embodiment, the opening comprises an axial passage (120) including a first portion (122) having a substantially rectangular cross-section corresponding to a substantially planar initial configuration of the implant (50, 90, 90', 102, 102'), and a second portion (124) having a substantially circular cross-section corresponding to a substantially cylindrical deformed configuration of the implant (50, 90, 90', 102, 102').

La présente invention concerne un instrument (60, 100) et un procédé permettant d'amener un implant (50, 90, 90', 102, 102') dans un espace intervertébral. L'instrument comporte une filière (70, 110) dont la configuration permet à l'implant (50, 90, 90', 102, 102') d'abandonner une configuration initiale pour passer à une configuration déformée par laquelle il présente de côté un profil convenant à l'insertion dans l'espace discal intervertébral (S) d'une façon la moins invasive possible. Selon un mode de réalisation, la filière (70, 110) comporte une ouverture (72, 120) dont les dimensions sont prévues pour la réception de l'implant (50, 90, 90', 102, 102') dans sa configuration initiale, le déplacement relatif de l'implant (50, 90, 90', 102, 102') par rapport à la filière (70, 110) amenant l'implant (50, 90, 90', 102, 102') à passer à la configuration déformée à profil réduit. Selon un mode de réalisation spécifique, l'ouverture comporte un passage axial (120) en deux parties (122, 124). La première partie (122) présente un plan de coupe sensiblement rectangulaire correspondant à la configuration initiale sensiblement plane de l'implant (50, 90, 90', 102, 102'). La seconde partie (124) présente un plan de coupe sensiblement circulaire correspondant à une configuration déformée sensiblement circulaire de l'implant (50, 90, 90', 102, 102').

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