Dave's PCF WIP: Terms

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angle feature

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"Angle feature" refers broadly to a structural component of a cutting instrument and/or abrading instrument that connects and/or positions a cutting face, cutting structure, abrading feature, contouring feature(s), rasp feature(s), or the like relative to the instrument’s main body and/or operational axis. In one embodiment, an angle feature can be configured to orient such features at a non-zero angle relative to a longitudinal axis of an instrument's main body to facilitate effective engagement with a target surface during a procedure (e.g., a surgical procedure), enhancing the instrument’s versatility across a range of applications, including but not limited to surgical, industrial, or material-shaping tasks. This angle feature may take various forms to achieve the desired angular orientation, accommodating diverse designs and implementations while ensuring functional alignment with the instrument’s intended purpose.

In certain embodiments, such as with a rasp blade configured for shaping a bone surface, the angle feature can refer to a structural component that connects a body to a foot and can establish an acute angle between a planar inferior side of the foot and a longitudinal axis of the body. The angle feature can be configured to position the foot relative to the body such that the rasp features on the planar inferior side can effectively engage and shape a bone surface during operation, such as when coupled to a powered oscillation handpiece via an oscillation mount. This angle feature may be implemented in various forms to achieve the desired angular orientation, including, but not limited to, a curved transition, a linear segment, a stepped configuration, a flexible linkage, and/or a pivotable junction, each adapted to transmit oscillatory motion from the body to the foot while maintaining structural integrity.

In some embodiments, the angle feature may comprise a curved transition, such as an arcuate bend or fillet, integrally formed between the body and the foot, providing a smooth shift in orientation with a radius of curvature that may range, for example, from approximately 2 mm to 10 mm, depending on the intended application. Alternatively or in addition, the angle feature may be embodied as a linear segment, such as an angled arm or extension, connecting the body to the foot at a fixed acute angle. The acute angle provided by the angle feature may vary, for instance, from about 30 degrees to about 60 degrees relative to the longitudinal axis, to optimize access to target surfaces.

In other embodiments, the angle feature may include a stepped configuration, characterized by one or more discrete angular shifts or terraces between the body and the foot, such a configuration may enhance stability and/or provide multiple working angles within a single structure. Additionally, the angle feature may be implemented as a flexible linkage, such as a resilient material or segmented joint, allowing dynamic flexure during use, or as a pivotable junction, such as a hinge or ball-and-socket mechanism with a pivot lock mechanism, permitting adjustable angular positioning of the foot relative to the body, with an angular range that may span, for example, from 0 degrees (aligned with the longitudinal axis) to 89 degrees.

The angle feature may be integrally formed with the body and/or foot, such as through machining, molding, or forging of a unitary material (e.g., stainless steel, titanium), or it may comprise a separate component affixed thereto, such as by welding, adhesive bonding, and/or mechanical fastening. The specific design of the angle feature, including its shape, size, and angle, may be selected based on factors such as the type of surface to be engaged, the motion characteristics of the cutting instrument, and/or ergonomic considerations for the user. Regardless of its form, the angle feature ensures that the cutting face, abrading feature, rasp feature(s), or similar elements are oriented to cut, abrade, grind, shape, or refine surfaces effectively, enhancing the instrument’s utility across diverse procedures.