Hemispherical reamer having circular cutting members and methods of making the same
OwnerPing Xie, Xue Liinventors
Life of this patent
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Abstract
A spherical reamer comprises a cutting element having a support member and at least one circumference cutting member built on it. The cutting member can be characterized by edge configuration, geometric parameters or further by positional parameters, respectively. All variations of the parameters above lead various types of the cutting elements and methods of including self- assembling and/or “One Size Cutting Element for Assembling Several Size of Reamers” in order to assembling either reusable or disposable reamer.
Claims24
A hemispherical reamer being attachable to a driving shaft and rotatable around a longitudinal axis and having a spherical cutting radius and a spherical center comprises:
- a) a plurality of limbs being equally spaced apart from each other and symmetrically extending from the longitudinal axis,
- b) a support member extending from a distal end of each limb and further comprising at least one link mechanism established on the support member and
- c) at least one circular cutting member at least extending from edge of the support member and established a circumferential cutting edge thereon having a cutting radius, a circular cutting center and a virtual circular plane of the cutting edge thereof;
- wherein each support member is inwardly bent toward the longitudinal axis and symmetrically coupled together with adjacent support members by the link mechanisms thereof for assembling the reamer, by which the circular plane is perpendicular to the spherical cutting radius and is titled away from the longitudinal axis to form an arm angle between the longitudinal axis and a cutting axis of each cutting member and the circular center of the cutting member is spaced apart from the spherical center in a distance defining an arm length between the spherical center and the cutting center of the cutting member along the cutting axis, respectively;
- and wherein the arm length and the cutting radius of the cutting member determine the spherical cutting radius of the reamer.
A hemispherical reamer being attachable to a driving shaft and rotatable around a longitudinal axis and having a spherical cutting radius, a spherical center and a polar point thereof comprises a plurality of cutting elements, each comprising:
- a) at least one circular cutting member extending from a circumferential leading fringe of a support member and having a cutting radius, a cutting center and a virtual circular plane of a cutting edges, respectively;
- and b) a plurality of link mechanisms established on the support member for symmetrically coupling with the support members of sequential cutting elements together around the longitudinal axis for assembling the reamer, by which each circular plane is perpendicular to the spherical cutting radius and titled away from the longitudinal axis to form arm angle between the longitudinal axis and a cutting axis of each cutting member and the cutting center is spaced apart from the spherical center in a distance defining an arm length between the cutting center of the cutting member and the spherical center along the cutting axis, respectively, and wherein the arm length and the cutting radius of the cutting member determine the spherical cutting radius of the reamer assembled.
A hemispherical reamer being attachable to a driving shaft and rotatable around a longitudinal axis and having a spherical radius, a spherical center and a polar point thereof comprises:
- a) a center connector comprising a plurality of interfaces being equally spaced apart from each other and having a desired position and orientation toward the spherical center and the longitudinal axis;
- and b) a plurality of cutting elements comprising a support member and at least one circular cutting member extending from a circumferential edge of each support member and having a cutting radius, a cutting center and a virtual circular plane;
- wherein each cutting element or each cutting member is positioned on the corresponding interface of the center connector, while assembling the reamer, by which the circular plane of the cutting member is perpendicular to the spherical cutting radius and titled away from the longitudinal axis to form an arm angle between the longitudinal axis and a cutting axis of the cutting member and the cutting center thereof is spaced apart from the spherical center by a distance defining an arm length between spherical center and the cutting center of the cutting member along the cutting axis, respectively;
- and wherein the arm length and the cutting radius of the cutting member together determine the spherical radius of the reamer assembled.
Dependencies are inferred from the claim text.