Intramedullary interlocking fixation devices for the distal radius
First Claim
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1. An intramedullary rod in combination with a cooperating insertion guide for fixation of a distal radius fracture of a patient, comprising:
- a distal radius intramedullary rod having opposing distal and proximal ends and a curvilinear shape that is substantially similar to a curvature of an intramedullary canal of a human distal radius, wherein the distal end of the rod has a head with at least one laterally extending distal aperture, wherein the head, in an implanted position, is sized and configured to reside entirely within a radial styloid region of the distal radius proximate an articulating surface of the distal radius to affix distal radius fragments associated with the distal radius fracture, and wherein, in the implanted position, the rod is configured and sized to reside entirely within the radius and support and buttress the articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture; and
an insertion guide with a curved rod driver releasably attachable to the head of the intramedullary rod, the insertion guide sized and configured to guide the rod into position in a medullary canal, and wherein the insertion guide is sized and configured to enter a lateral entry bone window in at least one distal fracture fragment.
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Abstract
Medical kits for treating fractures in or adjacent the wrist and distal forearm employ an intramedullary interlocking fixation rod (i.e, it interlocks the distal and proximal fracture fragments together) to stabilize the skeletal structure in a manner which can inhibit the amount of collapse or loss in skeletal length exhibited by a patient with a distal radius fracture.
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Citations
21 Claims
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1. An intramedullary rod in combination with a cooperating insertion guide for fixation of a distal radius fracture of a patient, comprising:
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a distal radius intramedullary rod having opposing distal and proximal ends and a curvilinear shape that is substantially similar to a curvature of an intramedullary canal of a human distal radius, wherein the distal end of the rod has a head with at least one laterally extending distal aperture, wherein the head, in an implanted position, is sized and configured to reside entirely within a radial styloid region of the distal radius proximate an articulating surface of the distal radius to affix distal radius fragments associated with the distal radius fracture, and wherein, in the implanted position, the rod is configured and sized to reside entirely within the radius and support and buttress the articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture; and an insertion guide with a curved rod driver releasably attachable to the head of the intramedullary rod, the insertion guide sized and configured to guide the rod into position in a medullary canal, and wherein the insertion guide is sized and configured to enter a lateral entry bone window in at least one distal fracture fragment. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An intramedullary rod in combination with a cooperating insertion guide for fixation of a distal radius fracture of a patient, comprising:
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a distal radius intramedullary rod having opposing distal and proximal ends and a curvilinear shape that is substantially similar to a curvature of an intramedullary canal of a human distal radius, wherein the distal end of the rod has a head with at least one laterally extending distal aperture, wherein the rod, in an implanted position, is sized and configured to reside entirely in the radius with the head totally within a radial styloid region proximate an articulating surface of the distal radius to affix distal radius fragments associated with the distal radius fracture and is configured and sized to support and buttress the articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture; an insertion guide with a curved rod driver releasably attachable to the head of the intramedullary rod, the insertion guide sized and configured to guide the rod into position in a medullary canal, and wherein the insertion guide is sized and configured to enter a lateral entry bone window in at least one distal fracture fragment, wherein the insertion guide is attached to the rod via an attachment member inserted into the laterally extending distal aperture; and an implantable distal fixation member that engages the distal aperture of the head after the insertion guide is released from the rod. - View Dependent Claims (8, 9, 10, 11)
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12. An intramedullary rod in combination with a cooperating insertion guide for fixation of a distal radius fracture of a patient, comprising:
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a distal radius intramedullary rod having opposing distal and proximal ends and a curvilinear shape that is substantially similar to a curvature of an intramedullary canal of a human distal radius, wherein the distal end of the rod has a head with at least one laterally extending distal aperture, wherein an implanted position, is sized and configured to reside in a distal radius fracture fragment within a radial styloid region of the distal radius proximate an articulating surface of the distal radius to affix distal radius fragments associated with the distal radius fracture, and wherein, in the implanted position, the rod is configured and sized to support and buttress the articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture; and an insertion guide with a curved rod driver releasably attachable to the head of the intramedullary rod, the insertion guide sized and configured to guide the rod into position in a medullary canal, and wherein the insertion guide is sized and configured to enter a lateral entry bone window in at least one distal fracture fragment, wherein the rod has a plurality of proximal apertures that extend through the rod in a transverse direction, the transverse direction of each proximal aperture being offset from a transverse direction of the distal aperture. - View Dependent Claims (13, 14, 15, 16)
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17. An intramedullary rod for fixation of a distal radius fracture of a patient in combination with an insertion guide, the combination comprising:
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a distal radius intramedullary rod having an elongate curvilinear shape with opposing distal and proximal ends, wherein, in an implanted position, the rod resides entirely within the radius with the distal end sized and configured to reside totally inside a radial styloid region of the distal radius proximate an articulating surface of the distal radius, wherein the rod distal end has a head that includes a laterally extending aperture, wherein, in the implanted position, the rod is configured and sized to support and buttress the articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture; and an insertion guide releasably attachable to the intramedullary rod laterally extending aperture in the head, the insertion guide sized and configured to guide the rod into position in a medullary canal, and wherein the insertion guide is sized and configured to enter a lateral entry bone window in the distal radius. - View Dependent Claims (18, 19, 20, 21)
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Specification