Surgical saw blade
First Claim
1. A blade for a surgical saw, comprising an elongate body having first and second substantially flat surfaces, and having a proximal end and a distal end and a plurality of teeth formed on an outwardly facing edge surface of said distal end, each of said teeth having a base and at least two surfaces which intersect to define a cutting edge, and wherein the bases of adjacent teeth are separated by a space, each of the spaces between the bases of adjacent teeth being defined by at least two, substantially flat intersecting surfaces which lie in intersecting planes which are non-perpendicular to the first and second substantially flat surfaces, wherein each of said intersecting surfaces defining said spaces is angled relative to each of said surfaces which intersect to define the cutting edges wherein one of said intersecting surfaces defining said space intersects said first flat surface at an angle so as to guide cuttings generated by the adjacent teeth laterally toward said first surface, and wherein the other of said intersecting surfaces defining said space intersects said second flat surface at an angle so as to guide cuttings laterally toward said second surface, as the blade advances in a cut.
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Accused Products
Abstract
A blade for a surgical saw has an elongate body with distal and proximal ends, and a plurality of teeth formed on an outwardly facing edge surface of the distal end. The spaces between adjacent teeth are defined by surfaces which lie in planes which are non-perpendicular to the substantially flat surfaces which define the body of the blade. These non-perpendicular surfaces guide cuttings generated by the teeth laterally toward the flat surfaces of the blade and outwardly toward the proximal end of the blade as the blade advances in a cut. Each of the teeth formed on the edge of the blade has a pointed form. Approximately half of the teeth lie in a row in which the respective points lie in a first cutting plane which extends in parallel with, and lies adjacent a first side of, a plane which extends longitudinally through the center of the blade body. The remaining teeth have points which lie in a second row in a second cutting plane which extends in parallel with, and lies adjacent a second side of, the plane which extends longitudinally through the blade body. The teeth have triangular cross-sections and are formed on alternatingly intersecting angled surfaces formed on the distal edge. The base of each tooth lies in the same plane as the surface upon which the tooth is formed. Each tooth has two side surfaces extending upwardly from the base and intersecting above the base to form a point. In the embodiment illustrated, the side surfaces are shaped as parallelograms and share a common side so as to form a knife-edge cutting surface which extends from the point backwardly toward the proximal end of the blade.
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Citations
27 Claims
- 1. A blade for a surgical saw, comprising an elongate body having first and second substantially flat surfaces, and having a proximal end and a distal end and a plurality of teeth formed on an outwardly facing edge surface of said distal end, each of said teeth having a base and at least two surfaces which intersect to define a cutting edge, and wherein the bases of adjacent teeth are separated by a space, each of the spaces between the bases of adjacent teeth being defined by at least two, substantially flat intersecting surfaces which lie in intersecting planes which are non-perpendicular to the first and second substantially flat surfaces, wherein each of said intersecting surfaces defining said spaces is angled relative to each of said surfaces which intersect to define the cutting edges wherein one of said intersecting surfaces defining said space intersects said first flat surface at an angle so as to guide cuttings generated by the adjacent teeth laterally toward said first surface, and wherein the other of said intersecting surfaces defining said space intersects said second flat surface at an angle so as to guide cuttings laterally toward said second surface, as the blade advances in a cut.
- 10. A blade for a surgical saw, comprising an elongate body having first and second substantially flat surfaces, and having a proximal end and a distal end and a plurality of teeth formed on an outwardly facing edge surface of said distal end, wherein said plurality of teeth comprise a first set of teeth spaced apart in a first row and a second set of teeth spaced apart in a second row, each tooth of said first set having a point which lies in a first cutting plane which extends in parallel with and lies adjacent a first side of a plane which extends longitudinally through the center of the body, each tooth of said second set having a point which lies in a second cutting plane which extends in parallel with and lies adjacent a second side of the plane which extends longitudinally through the center of the body, said plurality of teeth being disposed in alternating relation such that each tooth in the first set is disposed between two teeth of the second set, and vice versa, and wherein said outwardly facing edge comprises a plurality of alternating, substantially flat surfaces which lie in alternately intersecting planes, which planes also intersect a longitudinal plane which extends through the center of the blade at substantially equal acute angles, as measured from a point on said plane which extends longitudinally through the center of the body, and wherein each of said plurality of teeth comprises at least two surfaces which intersect to define a cutting edge, and wherein each of said plurality of teeth is formed on a respective one of said alternating surfaces, and wherein adjacent teeth are spaced apart on said alternating surfaces such that each space is defined by intersecting portions of adjacent alternating surfaces, and wherein each of said alternating surfaces is angled relative to each of said surfaces which intersect to define the cutting edges.
- 17. A blade for a surgical saw, comprising an elongate body having first and second substantially flat surfaces, and having a proximal end and a distal end and a plurality of teeth formed on an outwardly facing edge surface of said distal end, each of said teeth having a triangular cross-section, as viewed from a plane which extends longitudinally through the body of the blade, said cross-section having a base and a height, and each of said teeth having a length as measured transversely through said plane, said length being substantially greater than said height and base, and wherein the bases of adjacent teeth are separated by a space defined by at least two intersecting surfaces which are non-perpendicular to the first and second substantially flat surfaces, wherein one of said intersecting surfaces defining said space intersects said first flat surface at an angle so as to guide cuttings generated by the adjacent teeth laterally toward said first surface, and wherein the other of said intersecting surfaces defining said space intersects said second flat surface at an angle so as to guide cuttings laterally toward said second surface, as the blade advances in a cut and wherein each of said teeth comprises a pair of side surfaces extending upwardly from said base and intersecting along a common side to form a cutting edge and wherein each of said intersecting surfaces defining said spaces is angled relative to each of said side surfaces.
- 23. A blade for a surgical saw, comprising an elongate body having first and second substantially flat surfaces, and having a proximal end and a distal end, a plurality of alternating surfaces formed on an outwardly facing edge surface of said distal end, said surfaces alternatingly arranged to intersect respective ones of said first and second substantially flat surfaces at first and second angles, respectively, and a plurality of teeth formed, respectively, on said alternating, intersecting surfaces, each tooth having a narrow base disposed in a central region of the respective surface so as to leave substantial portions of said surface exposed on either side of said base, wherein said exposed portions of adjacent surfaces guide cuttings generated by adjacent teeth laterally toward said first and second surfaces, respectively, and away from the distal end of the blade as the blade advances in a cut.
Specification