BLADE ASSEMBLY FOR USE WITH A SAGITTAL SAW ASSEMBLY

摘要

A blade assembly (22, 210) for use with a sagittal saw assembly comprising a handpiece (24) having a forwardly directed front face and a drive assembly (30, 34, 48) disposed inside said handpiece (24) is described. The blade assembly (22, 210) comprises an elongate guide bar (110, 212) adapted to, when coupled to the handpiece, extend forwardly from the handpiece front face and terminate at a distally directed face spaced from the handpiece front face. The guide bar (110, 212) includes a bottom bar (116, 218), an inner bar (118, 220) and an outer bar (120, 222) that are stacked together. The inner bar (118, 220) holds the bottom bar (116, 218) and the outer bar (22) in spaced relationship from each other, and contributes to the overall rigidity of the guide bar (110, 212). A saw blade (112, 214, 302) is movably attached to said guide bar (110, 212) between the bottom and outer bars (218, 222). Said saw blade (112, 214, 302) has teeth (168, 308) which extend outwardly beyond said guide bar distally directed face, and said saw blade has a thickness dimension defined transversely to the elongated direction of said guide bar (110, 212). A connecting member (114, 216, 312) extends in the space between the bottom and outer bars (218, 222) and has a first end adapted to be connected to the drive assembly (30, 34, 48) of the sagittal saw. A second end of the connecting member is connected to said saw blade (112, 214, 302) such that said connecting member (114, 216, 312), when driven by the drive assembly (30, 34, 48), is adapted to displace said saw blade (112, 214, 302) so that said teeth (168, 308) oscillate back and forth across said guide bar distally directed face. Said guide bar (110, 212) has a thickness dimension defined transversely to the elongated direction thereof, said thickness dimension being no greater than the thickness dimension of said saw blade (112, 214, 302). Said connecting member (114, 216, 312) and said saw blade (112, 214, 302) comprise a monolithic, one-piece component.