A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/16 (2006.01)
Patent
CA 2678076
A surgical instrument is provided for cutting bone and other tissue. The surgical instrument is powered by a pressurized fluid and includes a rotatable shaft connected to a dissection tool. The instrument includes a housing member comprising a one-piece base. A rotor housing chamber is defined by the base, and the rotatable shaft is located in the rotor housing chamber. A first bearing housing is defined by the base, located adjacent the rotor housing chamber, and houses a first bearing that engages the rotatable shaft. A second bearing housing is defined by the base, located on an opposite side of the rotor housing chamber from the first bearing housing, and houses a second bearing that engages the rotatable shaft. A passage is defined by the base and operable to direct a pressurized fluid through the base to the rotor housing chamber in order to rotate the rotatable shaft.
Cette invention a trait à un instrument chirurgical destiné à découper de l'os et d'autres tissus. L'instrument chirurgical est entraîné par un fluide sous pression et comprend une tige rotative reliée à un outil de dissection. L'instrument comprend un élément pour boîtier comportant une base en un seul morceau. La base définit une chambre abritant un rotor, la tige rotative étant située dans la chambre abritant le rotor. La base définit un premier boîtier pour roulement, qui est adjacent à la chambre abritant le rotor, et qui renferme un premier roulement qui s'engage dans la tige rotative. La base définit un second boîtier pour roulement, qui est situé à l'opposé du premier boîtier pour roulement contre la chambre abritant le rotor, et qui renferme un second roulement qui s'engage dans la tige rotative. La base définit un passage qui sert à faire traverser un fluide sous pression par la base et à le diriger jusqu'à la chambre abritant le rotor afin de faire tourner la tige rotative.
Johnston Gabriel A.
Morris Jonathan
Tidwell Durrell
Medtronic Ps Medical Inc.
Smart & Biggar
LandOfFree
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