Inflatable interspinous spacer

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/70 (2006.01)

Patent

CA 2725116

The present invention is directed to an inflated interspinous spacer. The interspinous spacer is inserted into the interspinous space between adjacent spinous process in a deflated or unexpanded state, and is inflated or expanded with an injectable filler material. Upon inflation, the spacer preferably distracts the spinous processes and assumes a shape that retains the spacer in position and preferably mechanically locks with the spinous processes. The spacer includes two separate balloons configured to have different compressive modulus so that one balloon is softer and more deformable than the other balloon.

La présente invention porte sur un espaceur interépineux gonflé. L'espaceur interépineux est introduit à l'intérieur de l'espace interépineux entre des apophyses épineuses adjacentes dans un état dégonflé ou non déployé, et est gonflé ou déployé à l'aide d'une matière de charge injectable. Lors du gonflement, l'espaceur détourne de préférence les apophyses épineuses et prend une forme qui maintient l'espaceur en position et verrouille de façon préférablement mécanique les apophyses épineuses. L'espaceur comprend deux ballonnets séparés configurés de manière à avoir des modules de compression différents de telle sorte que l'un des ballonnets est plus mou et plus déformable que l'autre ballonnet.

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