Surgical sagittal saw for actuating a saw blade with an oscillating head, the saw having a coupling assembly for releaseably holding the saw blade

摘要

A surgical sagittal saw for use with a complementary blade assembly that includes a static bar. The saw includes a head over which the blade assembly bar is seated. A clamp rod is able to mounted to the head to move along the longitudinal axis of the rod. The rod has a head that, as result of the longitudinal movement of the rod is moved towards and away from the head. A blade assembly is disposed on the saw head adjacent the rod. The rod can be positioned in a run state so that the rod head abuts the bar of the blade assembly so as to hold the blade assembly to the saw head. Alternatively, the rod can be repositioned in a load state the rod head is spaced from the saw head. This allows the blade assembly to be removed and replaced. A control member mounted to the saw head controls the movement of the rod. When the rod is moved from the load state to the run state, a biasing member places a force on the rod to hold the rod in the run state.

主权项

1. A surgical saw for use with a blade assembly having a blade bar, at least one drive rod moveably disposed within the blade bar and a blade head that is oscillated by the at least one drive rod, said saw comprising:
a housing including a head, said head having a surface for receiving the blade assembly blade bar; a motor disposed in said housing; an oscillating drive assembly mounted to said housing head that includes at least one oscillating drive member that is moveably mounted to said head adjacent the surface on which the blade assembly bar is received, said oscillating drive member shaped to receive the blade assembly at least one drive rod, wherein said oscillating drive assembly is connected to said motor and configured to, upon actuation of said motor, oscillate the at least one oscillating drive member so that the oscillation of the at least one oscillating drive member results in the reciprocation of the at least drive rod; a coupling member separate from said oscillating drive assembly that is moveably mounted to said housing head so as to extend above the housing head surface, said coupling member shaped to extend at least partially over the blade assembly blade bar and having a run state in which said coupling member presses against the blade bar to hold the blade bar to the housing head surface and a load state in which the coupling member allows the insertion/removal of the blade bar from the housing head surface; and a manually actuated control member moveably attached to said housing and connected to said coupling member for moving said coupling member between the run and load states.