Intramedullary nail

Details Intramedullary nail Intramedullary nail

A - Human Necessities

61

B

A61B 17/72 (2006.01)

Patent

CA 2549459

The intramedullary nail (1) has a proximal half (2), a distal half (3) suitable for being inserted into the medullary canal, and a central axis (4), said distal half (3) being provided with three transverse bores (5, 6, 7) suitable for receiving locking screws (10). The distal half (3) is provided along the central axis (4) with a proximal transverse bore (5) having a bore axis (15), a central transverse bore (6) having a bore axis (16), and a distal transverse bore (7) having a bore axis (17). The bore axis (16) of the central transverse bore (6), which extends between the proximal transverse bore (5) and the distal transverse bore (7), is spaced at a shortest distance "a" from the bore axis (15) of the proximal transverse bore (5), and at a shortest distance "b" from the bore axis (17) of the distal transverse bore (7). In addition, the condition a .noteq. b is applicable.

L'invention concerne une sonde à moelle épinière intramédullaire (1) comportant une moitié proximale (2), une moitié distale (3) destinée à l'introduction dans le canal de moelle épinière, et un axe central (4), la moitié distale (3) présentant trois alésages transversaux (5, 6, 7) destinés à recevoir des vis de verrouillage (1). La moitié distale (3) s'étendant le long de l'axe central (4) présente un alésage transversal proximal (5) d'axe d'alésage (15), un alésage transversal central (6) d'axe d'alésage (16), et un alésage transversal distal (7) d'axe d'alésage (17). L'axe d'alésage (16) de l'alésage transversal central (6) s'étendant entre l'alésage transversal proximal (5) et distal (7) présente un écart minimal (a) par rapport à l'axe d'alésage (15) de l'alésage transversal proximal (5) et un écart minimal (b) par rapport à l'axe d'alésage (17) de l'alésage transversal distal (7), avec a ? b.

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