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rasp feature
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2380.2.01
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App Docket
Created Date
Full Desc
"Rasp feature," as used herein, refers to a feature and/or a structural component of a cutting instrument, such as a rasp and/or rasp blade, or the like configured to abrade, grind, shape, contour, or refine surfaces during a procedure. The rasp feature enhances the cutting instrument’s versatility by enabling both precise cutting and controlled surface sculpting. In some embodiments, the rasp feature comprises a plurality of raised protrusions, serrations, ridges, or teeth disposed along at least a portion of an instrument’s working surface, such as a planar surface, an edge, a distal end, a distal surface, and/or a lateral face thereof. These protrusions may be arranged in a pattern, such as linear rows, arcuate rows, a grid, or an irregular array, and are sized and shaped to remove material incrementally through frictional engagement, thereby smoothing and/or contouring the surface rather than solely incising the surface. For example, the rasp feature may include teeth or protrusions with a height ranging from approximately about 0.1 mm to about 2 mm and a spacing of approximately about 0.5 mm to about 5 mm, though other dimensions are contemplated depending on the intended application. Alternatively, the rasp feature may be embodied as a textured surface, such as a roughened, etched, or grit-coated area, applied to the instrument’s working surface to facilitate abrasion through microscopic or macroscopic surface irregularities. Such a textured surface may be achieved, for instance, through chemical etching, laser texturing, or the application of an abrasive coating, providing a uniform or patterned roughness with a surface roughness average (Ra) ranging from approximately 0.5 µm to 50 µm, depending on the desired abrasiveness. The rasp feature, whether formed as protrusions, serrations, teeth, or a textured surface, may be integrally formed with the instrument body, such as through machining, molding, or surface treatment, or may be a distinct element affixed thereto, such as a coated abrasive layer. This flexibility in construction allows the rasp feature to be adapted to various manufacturing processes and instrument designs, supporting a range of applications where both cutting and/or surface refinement are desired.
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