Intramedullary interlocking fixation devices for the distal radius
First Claim
Patent Images
1. A distal radius device for fixation of a distal radius injury, comprising:
- a curvilinear elongate fixation implant member having opposing distal and proximal ends, the distal end having a head that is configured to reside in an implanted position in at least one distal radius fracture fragment within a radial styloid region proximate an articulating surface of the distal radius, the proximal end having a tip that is configured to reside in an implanted position in an intramedullary canal of a human distal radius, wherein the head has at least one aperture extending therethrough in a transverse direction, and wherein a proximal end portion adjacent the tip has a plurality of proximal apertures extending therethrough, each proximal aperture extending in a transverse direction, the transverse direction of each proximal aperture being offset from the transverse direction of the at least one head aperture, and wherein the curvilinear elongate fixation member is sized and configured to reside in the implanted position in the distal radius;
at least one distal fixation member, one configured to extend through a respective one of the at least one head aperture of the curvilinear elongate fixation member; and
a plurality of proximal fixation members, one of which extends through a respective one of the proximal apertures of the curvilinear elongate fixation member, whereby the distal radius device is configured and sized to stabilize a distal radius injury having distal radius fragments and allow wrist mobility.
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Abstract
Methods and devices 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
22 Claims
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1. A distal radius device for fixation of a distal radius injury, comprising:
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a curvilinear elongate fixation implant member having opposing distal and proximal ends, the distal end having a head that is configured to reside in an implanted position in at least one distal radius fracture fragment within a radial styloid region proximate an articulating surface of the distal radius, the proximal end having a tip that is configured to reside in an implanted position in an intramedullary canal of a human distal radius, wherein the head has at least one aperture extending therethrough in a transverse direction, and wherein a proximal end portion adjacent the tip has a plurality of proximal apertures extending therethrough, each proximal aperture extending in a transverse direction, the transverse direction of each proximal aperture being offset from the transverse direction of the at least one head aperture, and wherein the curvilinear elongate fixation member is sized and configured to reside in the implanted position in the distal radius; at least one distal fixation member, one configured to extend through a respective one of the at least one head aperture of the curvilinear elongate fixation member; and a plurality of proximal fixation members, one of which extends through a respective one of the proximal apertures of the curvilinear elongate fixation member, whereby the distal radius device is configured and sized to stabilize a distal radius injury having distal radius fragments and allow wrist mobility. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A distal radius device for fixation of a distal radius injury having distal radius fracture fragments, comprising:
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a curvilinear elongate fixation implant having opposing distal and proximal ends, the distal end having a head that is configured to reside in an implanted position in at least one distal radius fracture fragment within a radial styloid region proximate an articulating surface of the distal radius, the proximal end having a tip that is configured to reside in an implanted position in an intramedullary canal of a human distal radius, wherein the head has an aperture extending therethrough in a transverse direction, and wherein a proximal end portion adjacent the tip has a plurality of proximal apertures, each proximal aperture extending in a transverse direction, and wherein the curvilinear elongate fixation implant is sized and configured to reside in the implanted position entirely in the distal radius; a distal fixation member configured to extend through the head aperture of the curvilinear elongate fixation implant, wherein the distal fixation member is sized and configured to extend across a major portion of a width of a distal fracture fragment in the metaphysis region of the distal radius to reside within a perimeter of a natural pre-injury distal radius bone thereat; and a plurality of proximal fixation members, one of which extends through a respective one of the proximal apertures of the curvilinear elongate fixation implant, whereby the distal radius device is configured and sized to stabilize a distal radius injury having distal radius fragments and allow wrist mobility. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A distal radius device for fixation of a distal radius injury, comprising:
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a curvilinear elongate fixation implant member having at least a portion that is configured to correspond to a radial curvature of the intramedullary canal of a human distal radius, wherein the elongate fixation implant member has opposing distal and proximal ends, the distal end having a head that is configured to reside in an implanted position in at least one distal radius fracture fragment within a radial styloid region proximate an articulating surface of the distal radius, the proximal end having a tip that is configured to reside in an implanted position in an intramedullary canal of a human distal radius, wherein the head has at least one aperture extending therethrough in a substantially transverse direction, and wherein a proximal portion of the elongate fixation implant member adjacent the tip has and a plurality of proximal apertures extending therethrough in a transverse direction, the transverse direction of each proximal aperture being offset from the transverse direction of the head aperture, wherein the curvilinear elongate fixation member is sized and configured to reside in the implanted position entirely in the distal radius; at least one distal fixation member having a respective head portion, one of the at least one distal fixation member extending through a respective one of the at least one apertures extending through the head aperture of the curvilinear elongate fixation implant member, wherein the at least one distal fixation member has a head that is substantially flush with or recessed into a canal defined by the respective head aperture, wherein the at least one distal fixation member is sized and configured to extend across a major portion of a width of a distal fracture fragment in the metaphyseal region of the distal radius to reside within a perimeter of a natural pre-injury distal radius bone thereat; and a plurality of proximal fixation members, one extending through a respective proximal aperture of the curvilinear elongate fixation member, whereby the distal radius device is configured and sized to stabilize a distal radius injury and allow wrist mobility.
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Specification