Cannula and device for liquid jet irrigation of bone

Details Cannula and device for liquid jet irrigation of bone Cannula and device for liquid jet irrigation of bone

A - Human Necessities

61

B

A61B 17/88 (2006.01)

Patent

CA 2712289

A cannula (1) comprising a central axis (2), a front end (3) and a through channel (5) coaxial or parallel to said central axis (2) and defining a peripheral wall (12) of said cannula (1), wherein A) said cannula (1) further comprises at least two perforations (8) penetrating said peripheral wall (12) transversely to said central axis (2); B) said through channel (5) is open at said front end (3); and C) the cross section of said through channel (5) has a contraction (6) with a diameter d1 located between the front most of said at least two perforations (8) and said front end (3) which is formed as a guidance for a wire (7). A device (10) for liquid jet irrigation of bone comprising such a cannula (1) and a wire (7).

L'invention porte sur une canule (1) qui comporte un axe central (2), une extrémité avant (3) et un canal traversant (5), coaxial ou parallèle audit axe central (2) et définissant une paroi périphérique (12) de ladite canule (1), A) ladite canule (1) comportant en outre au moins deux perforations (8) pénétrant ladite paroi périphérique (12) de façon transversale audit axe central (2) ; B) ledit canal traversant (5) étant ouvert au niveau de ladite extrémité avant (3), et C) la section transversale dudit canal traversant (5) ayant une contraction (6) avec un diamètre di situé entre la plus en avant desdites deux perforations (8)ou plus et ladite extrémité avant (3) qui est formée en tant que guidage pour un fil (7). L'invention porte également sur un dispositif (10) pour une irrigation d'os par jet liquide comportant une telle canule (1) et un fil (7).

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