Intramedullary fixation assembly and devices and methods for installing the same
First Claim
1. An intramedullary fixation assembly for repairing any of a plurality of human long bone types, each of the long bones defining a medullary canal fractured into at least a first and second adjacent bone fragments, the first bone fragment having a free end with an articular surface thereon and defining a side aperture, said side aperture positioned subjacent the articular surface and extending into the medullary canal, said intramedullary fixation assembly comprising:
- at least a first and second fasteners, each of said fasteners having an elongate body with a head end and an opposite, bone-securing end; and
a fixation member having a first end, a second end and a body extending between the first and second ends, said body defining a first fastener opening positioned proximate the first end and configured to allow passage of the first fastener therethrough and into the first bone fragment, said body defining a second fastener opening positioned proximate the second end and configured to allow passage of the second fastener therethrough and into the second bone fragment, and said body having a radius of curvature at least near the first end within a range of 1.5 to 5 inches to allow passage of the fixation member through the side aperture of the first bone fragment and into the medullary canal until the first end of the fixation member is positioned adjacent the side aperture and within a portion of the medullary canal defined within the first bone fragment, and the second end of the fixation member is positioned within a portion of the medullary canal defined within the second bone fragment, wherein the bone fragments are from any of the plurality of human long bone types.
3 Assignments
0 Petitions
Accused Products
Abstract
An intramedullary fixation assembly usable with different long bone types and a guide assembly for guiding deployment of the intramedullary fixation assembly. The intramedullary fixation assembly includes a fixation member that has ends and a curved body extending between the ends. The curved body of the fixation member has a radius of curvature configured to extend through the medullary canal regardless of the long bone anatomy. Fasteners fix the fixation member to the bone fragments and are guided by a guide assembly. The guide assembly includes a guide body defining openings configured to guide the fasteners through openings defined in the fixation member and into the bone fragments. A fixation end of the guide body includes a pair of opposing, converging surfaces that are configured to engage in a positive fit with an exposed end of the fixation member accessible through the side aperture in the first fragment.
-
Citations
18 Claims
-
1. An intramedullary fixation assembly for repairing any of a plurality of human long bone types, each of the long bones defining a medullary canal fractured into at least a first and second adjacent bone fragments, the first bone fragment having a free end with an articular surface thereon and defining a side aperture, said side aperture positioned subjacent the articular surface and extending into the medullary canal, said intramedullary fixation assembly comprising:
-
at least a first and second fasteners, each of said fasteners having an elongate body with a head end and an opposite, bone-securing end; and
a fixation member having a first end, a second end and a body extending between the first and second ends, said body defining a first fastener opening positioned proximate the first end and configured to allow passage of the first fastener therethrough and into the first bone fragment, said body defining a second fastener opening positioned proximate the second end and configured to allow passage of the second fastener therethrough and into the second bone fragment, and said body having a radius of curvature at least near the first end within a range of 1.5 to 5 inches to allow passage of the fixation member through the side aperture of the first bone fragment and into the medullary canal until the first end of the fixation member is positioned adjacent the side aperture and within a portion of the medullary canal defined within the first bone fragment, and the second end of the fixation member is positioned within a portion of the medullary canal defined within the second bone fragment, wherein the bone fragments are from any of the plurality of human long bone types. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A bi-cortical bone fastener for use with a fixation member defining a fixation member opening having a diameter, said bone fastener comprising:
-
a first bone-securing shaft portion having threads configured for fixation into a first layer of bone, said first bone-securing shaft portion having a maximum diameter smaller than the fixation member opening diameter;
a mid-shaft portion adjacent the bone-securing shaft portion and configured to extend into the fixation member opening, said mid-shaft portion having a maximum diameter greater than the maximum diameter of the bone-securing shaft portion; and
a second bone-securing shaft portion adjacent the mid-shaft portion and opposite the first bone-securing shaft portion, said second bone-securing shaft portion having threads configured for fixation into a second layer of bone, said second bone-securing shaft portion having a maximum diameter greater than the diameter of the mid-shaft portion.
-
Specification