Rotary bur instruments having bur tips with aspiration passages

Details Rotary bur instruments having bur tips with aspiration passages Rotary bur instruments having bur tips with aspiration passages

A - Human Necessities

61

B

A61B 17/32 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2398850

A rotary bur instrument includes an outer tube having an open distal end, and an inner member rotatably disposed in the outer tube. The inner member includes an inner tube having a distal end, a lumen therethrough and a bur tip at the distal end of the inner tube. The bur tip extends distally from the open distal end of the outer tube and has a passage extending longitudinally therethrough in communication with the lumen of the inner tube. The passage and the lumen define an aspiration passage through the inner member communicating with an aspiration port at a distal end of the bur tip.

Instrument de fraisage rotatif qui comporte un tube externe présentant une extrémité distale ouverte et un élément interne placé rotatif dans le tube externe. L'élément interne comporte un tube interne présentant une extrémité distale, une lumière interne parcourant ledit tube et une pointe de fraisage située à l'extrémité distale du tube interne. La pointe de fraisage s'étend distalement par rapport à l'extrémité distale ouverte du tube externe et possède un passage qui s'étend longitudinalement à travers ladite pointe et qui se trouve en communication avec la lumière du tube interne. Le passage et la lumière définissent un passage d'aspiration à travers l'élément interne, passage qui communique avec un orifice d'aspiration situé à l'extrémité distale de la pointe de fraisage.

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