Saw blade having a prearranged hub section

A surgical saw blade for penetrating bone when said surgical saw blade is operatively coupled to an oscillatory power tool, comprising:

• a surgical saw blade having a distal end and a proximal end;
• a cutting means disposed at said distal end of said surgical saw blade;
• a hub disposed at said proximal end for attachment to an oscillatory power tool for driving engagement with a hub section having an outer periphery, said hub section comprising
• an elongated slot formed in said hub section which extends from said outer periphery along a longitudinal axis to a U-shaped cut-out forming a hub center, said hub center being along said longitudinal axis;
• a plurality of slots, each of said slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center, the respective generally rectangular elongated blade driving enabling section being disposed in a pattern along a radius centered at the hub center;
• said respective generally rectangular elongated blade driving enabling section of each slot being configured for engaging with at least one of a plurality of rectangular driving lugs terminating in a substantially rectangular outer end arranged in a pattern and a plurality of rectangular driving lugs terminating in a substantially circular outer end arranged in a pattern to drive said saw blade in response to a driving force therefrom and wherein said respective expanded bulbous blade driving disabling section of each slot are substantially oval shaped or substantially oval shaped having an indentation extending substantially perpendicular to the substantially oval shape and in a direction away from the hub center and dimensioned for disengaging from a plurality of circular driving pins arranged in a pattern by disengaging over a range of a plus angle of 5 degree and a minus angle of 5 degree a driving force therefrom along a locus of points which avoids driving said saw blade in response to a driving force therefrom.

A surgical saw blade for use in combination with a surgical bone saw, the surgical saw blade comprising:

• a distal end having a plurality of teeth for cutting bone;
• a proximal end configured to couple to a surgical bone saw;
• a hub disposed at said proximal end for attachment to an oscillatory power tool for driving engagement with a hub section having an outer periphery, said hub section comprising
• an elongated slot formed in said hub section which extends from said outer periphery along a longitudinal axis to a U-shaped cutout forming a hub center, said hub center being along said longitudinal axis;
• a plurality of slots, each of said slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center, the respective generally rectangular elongated blade driving enabling section being disposed in a pattern along a radius centered at the hub center and wherein said respective expanded bulbous blade driving disabling section of each slot are substantially oval shaped or substantially oval shaped having an indentation extending substantially perpendicular to the substantially oval shape and in a direction away from the hub center and dimensioned for disengaging from a plurality of circular driving pins arranged in a pattern by disengaging over a range of a plus angle of 5 degree and a minus angle of 5 degree a driving force therefrom along a locus of points which avoids driving said saw blade in response to a driving force therefrom.

In combination, a surgical bone saw and a bone saw blade comprising:

• an oscillatory or sagittal bone saw;
• and
• surgical saw blade having;
• a distal end having teeth for cutting bone;
• and
• a proximal end configured to couple to a surgical bone saw, said proximal end having a hub section having an outer periphery located at a second end of said blade body, said hub section comprising
• an elongated slot formed in said hub section which extends from said outer periphery along a longitudinal axis to a U-shaped cutout forming a hub center, said hub center being along said longitudinal axis;
• a plurality of slots, each of said slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center, the respective generally rectangular elongated blade driving enabling section being disposed in a pattern along a radius centered at the hub center;
• said respective generally rectangular elongated blade driving enabling section of each slot being configured for engaging with at least one of a plurality of rectangular driving lugs terminating in a substantially rectangular outer end arranged in a pattern and a plurality of rectangular driving lugs terminating in a substantially circular outer end arranged in a pattern to drive said saw blade in response to a driving force therefrom and wherein said respective expanded bulbous blade driving disabling section of each slot are substantially oval shaped or substantially oval shaped having an indentation extending substantially perpendicular to the substantially oval shape and in a direction away from the hub center and dimensioned for disengaging from a plurality of circular driving pins arranged in a pattern by disengaging over a range of a plus angle of 5 degree and a minus angle of 5 degree a driving force therefrom along a locus of points which avoids driving said saw blade in response to a driving force therefrom.

A method of cutting bone comprising the steps of

• providing a saw blade having a hub section having an outer periphery located at one end of a saw blade body wherein said said hub section comprises an elongated slot formed in said hub section which extends from said outer periphery along a longitudinal axis to a U-shaped cut-out forming a hub center, said hub center being along said longitudinal axis and wherein said hub section further comprises a plurality of slots, each of said slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center, the respective generally rectangular elongated blade driving enabling section being disposed in a pattern along a radius centered at the hub center and wherein said respective expanded bulbous blade driving disabling section of each slot are substantially oval shaped or substantially oval shaped having an indentation extending substantially perpendicular to the substantially oval shape and in a direction away from the hub center and dimensioned for disengaging from a plurality of circular driving pins arranged in a pattern by disengaging over a range of a plus angle of 5 degree and a minus angle of 5 degree a driving force therefrom along a locus of points which avoids driving said saw blade in response to a driving force therefrom;
• coupling the saw blade to a surgical saw;
• actuating the surgical saw with the coupled saw blade;
• and
• cutting the bone.

A surgical saw blade for penetrating bone when said surgical saw blade is operatively coupled to an oscillatory power tool, comprising:

• a surgical saw blade having a proximal end and a distal end;
• said proximal end having a prearranged hub section for attachment to an oscillatory power tool for driving engagement thereby, said proximal end having
• an outer periphery located at a second end of said blade body, said prearranged hub section comprising
• an elongated slot formed in said hub section which extends from said outer periphery along a longitudinal axis to a U-shaped cut-out forming a hub center, said hub center being along said longitudinal axis;
• a plurality of slots, each of said slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center, the respective generally rectangular elongated blade driving enabling section being disposed in a pattern along a radius centered at the hub center;
• said respective generally rectangular elongated blade driving enabling section of each slot being configured for engaging with at least one of a plurality of rectangular driving lugs terminating in a substantially rectangular outer end arranged in a pattern and a plurality of rectangular driving lugs terminating in a substantially circular outer end arranged in a pattern to drive said saw blade in response to a driving force therefrom and wherein said respective expanded bulbous blade driving disabling section of each slot is configured for disengaging from a plurality of circular driving pins arranged in a pattern by deflecting a driving force therefrom along a locus of points which avoids driving said saw blade in response to a driving force therefrom and wherein said respective expanded bulbous blade driving disabling section of each slot are substantially oval shaped or substantially oval shaped having an indentation extending substantially perpendicular to the substantially oval shape and in a direction away from the hub center and dimensioned for disengaging from a plurality of circular driving pins arranged in a pattern by disengaging over a range of a plus angle of 5 degree and a minus angle of 5 degree a driving force therefrom along a locus of points which avoids driving said saw blade in response to a driving force therefrom;
• and
• said distal end having a plurality of cutting teeth.

A surgical saw blade having a prearranged hub section, said prearranged hub section comprising

• an outer periphery located at a second end of said blade body, said prearranged hub section comprising
• an elongated slot formed in said hub section which extends from said outer periphery along a longitudinal axis to a U-shaped cut-out forming a hub center, said hub center being along said longitudinal axis;
• and
• a plurality of slots, each of said slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center, the respective generally rectangular elongated blade driving enabling section being disposed in a pattern along a radius centered at the hub center;
• said respective generally rectangular elongated blade driving enabling section of each slot being configured for engaging with at least one of a plurality of rectangular driving lugs terminating in a substantially rectangular outer end arranged in a pattern and a plurality of rectangular driving lugs terminating in a substantially circular outer end arranged in a pattern to drive said saw blade in response to a driving force therefrom and wherein said respective expanded bulbous blade driving disabling section of each slot is substantially oval shaped or substantially oval shaped having an indentation extending substantially perpendicular to the substantially oval shape and in a direction away from the hub center and dimensioned for disengaging from a plurality of circular driving pins arranged in a pattern by disengaging over predetermine range of a plus angle and a minus angle a driving force therefrom along a locus of points which avoids driving said saw blade in response to a driving force therefrom.