Minimally invasive reamer
First Claim
Patent Images
1. A reamer for use in a procedure to ream a selected anatomical portion, the reamer comprising:
- a cutting section having a first edge and a second edge and including all of a cutting portion between the first edge and the second edge and defining a portion of a sphere that has a center wherein the portion of the sphere extends on a first side of a plane defined by an edge of the cutting section, and an axis of rotation;
a substantially separate stabilizing member having a third edge and a fourth edge extending from said cutting section wherein each of the third edge and the fourth edge are substantially orthogonal to said axis of rotation;
a protective member extending a distance from a second side of said plane away from the cutting section and adapted to minimize trauma during at least one of ingress and egress of the reamer during the procedure;
wherein said protective member is adapted to maintain tissue that is surrounding the selected anatomical portion at a selected distance during at least one of ingress and egress of the reamer.
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Abstract
A reamer for reaming of a acetabulum during a minimally invasive procedure. Generally, the reamer, particularly the reamer head, can be inserted and removed through a substantially small incision without trauma to the tissue surrounding the incision. The reamer, generally includes a reaming or scraping portion, which are aligned substantially along a single meridian of a hemisphere. The reamer further includes stabilizing portions to assist in ensuring a selected reaming orientation. Also, protective wings assist in removing the reamer.
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Citations
34 Claims
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1. A reamer for use in a procedure to ream a selected anatomical portion, the reamer comprising:
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a cutting section having a first edge and a second edge and including all of a cutting portion between the first edge and the second edge and defining a portion of a sphere that has a center wherein the portion of the sphere extends on a first side of a plane defined by an edge of the cutting section, and an axis of rotation; a substantially separate stabilizing member having a third edge and a fourth edge extending from said cutting section wherein each of the third edge and the fourth edge are substantially orthogonal to said axis of rotation; a protective member extending a distance from a second side of said plane away from the cutting section and adapted to minimize trauma during at least one of ingress and egress of the reamer during the procedure; wherein said protective member is adapted to maintain tissue that is surrounding the selected anatomical portion at a selected distance during at least one of ingress and egress of the reamer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An acetabular reamer for entering through a soft tissue and reaming an acetabulum of an individual, comprising:
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a cutting section comprising all of a cutting edge and defining a first portion of a sphere extending from a first plane, wherein the first portion of the sphere defines a surface; a stabilizing bar having a first edge and a second edge distinct from the cutting section and extending from said cutting section and defining a second portion of said sphere and the surface; and a protective member extending from said stabilizing member; wherein said protective member protects the soft tissue during removal of the acetabular reamer from the acetabulum wherein between said cutting section and at least one of said first edge, said second edge, or combinations thereof said stabilizing bar defines a viewing area in the acetabular reamer;
wherein said viewing area allows viewing of the acetabulum while the cutting section is positioned substantially adjacent to the acetabulum. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A reamer for reaming an anatomical portion, comprising:
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a member defining a portion of a sphere having a first interior side and a second exterior side and extending from a plane in a first direction; a substantially continuous rim extending from said member defining a perimeter and having a third interior side and a fourth exterior side; and the member having a first edge extending from the first interior side to the second exterior side and the rim having an edge extending from the third interior side to the fourth exterior side, wherein a viewing area is defined by the first edge and the second edge wherein both the first edge and the second edge are not cutting edges; wherein the anatomical portion is viewable through said viewing area wherein said member includes;
a cutting section defining a first portion of said sphere; and
a stabilization section defining a second portion of said sphere. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A reamer for use in a procedure to ream a selected anatomical portion, the reamer comprising:
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a cutting section having an edge defining a first plane and including substantially all of a cutting edge; a protective member having an exterior surface that extends from a second side of said first plane and away from the cutting section wherein the exterior surface defines a curve, is smooth, and adapted to minimize trauma during at least one of ingress and egress of the reamer during the procedure; wherein the protective member includes an outer surface that defines a radius over at least a portion of the outer surface; wherein said protective member is adapted to maintain tissue, that is surrounding the selected anatomical portion, at a selected distance during at least one of ingress and egress of the reamer wherein the protective member includes an outer edge defining a radius and a first edge that defines a second plane distinct from the first plane.
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32. A reamer for use in a procedure to ream a selected anatomical portion, the reamer comprising:
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a cutting section defining a portion of a sphere on a first side of a plane and an axis of rotation around which the cutting section is operable to move in a direction of rotation; at least two separate protective members each defining a first edge and a second edge wherein the first edge leads relative to a direction of rotation and the second edge trails relative to the direction of rotation and each extending a distance from a second side of said plane away from the cutting section and adapted to minimize trauma during at least one of ingress and egress of the reamer during the procedure; wherein the protective members are segmented near the plane; wherein the protective members are adapted to maintain tissue that is surrounding the selected anatomical portion at a selected distance during at least one of ingress and egress of the reamer. - View Dependent Claims (33, 34)
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Specification