Expandable bone nails
First Claim
1. A bone portion securing device adapted to be received within a bone cavity, the device including at least one portion capable of being radially expanded under an applied force, the at least one expansion portion having at least one portion, at least one characteristic of which is selected to be different to a corresponding at least one characteristic of at least one other portion of the portion.
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Accused Products
Abstract
The invention relates to bone nails for positioning fractured bone portions relative to one another. In particular, the present invention provides a bone portion securing device adapted to be received within a bone cavity, the device including at least one portion capable of being radially expanded under an applied force, the at least one expansion portion having at least one portion capable of being expanded under an applied force, the at least one expansion portion having at least one portion, at least one characteristic of which is selected to be different to a corresponding at least one characteristic of at least another part of the portion.
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Citations
28 Claims
- 1. A bone portion securing device adapted to be received within a bone cavity, the device including at least one portion capable of being radially expanded under an applied force, the at least one expansion portion having at least one portion, at least one characteristic of which is selected to be different to a corresponding at least one characteristic of at least one other portion of the portion.
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10. A bone securing device adapted to be received within a bone cavity, the device including at least one portion capable of being radially expanded under an applied force, wherein the at least one expansion portion is shaped to elastically bow outwards when a compressive force is applied axially to the expansion member.
- 11. A bone securing device adapted to be received within a bone cavity, the device including at least one portion capable of being radially expanded under an applied force, wherein the at least one expansion portion comprises at least one longitudinal portion fixed at either end to means which engage a compression coupling, wherein the profile of the at least one longitudinal portion is narrowed at one or both ends of the at least one longitudinal portion.
- 15. A bone portion securing device adapted to be received within a bone cavity, the device including at least one portion capable of being radially expanded under an applied force, wherein the at least one expansion portion includes at least one slot, the slot having at least one portion having a width greater than a width of a remainder of the at least one slot.
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20. A bone portion securing device comprising
at least two expansion modules, said expansion module(s) being of substantially cylindrical unitary construction including a plurality of substantially longitudinal portions which, in use, are substantially lateral to a bone wall and which bow elastically outward when a compressive force is applied axially to the expansion module; -
at least one compression coupling, said compression coupling including compressive attachment means to engage the expansion module(s) in a fixed position with respect to the compression coupling and being capable of transferring a compressive force; and
at least one compression means, said compression means being arranged to transfer a force, such as a rotational force, applied to at least one portion of a surface of the compression means to a compressive force applied to the at least one compression coupling. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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28. An expansion module for use as a portion of a bone portion securing device adapted to be received within a bone cavity, the module including at least one portion capable of being radially expanded under an applied force, the at least one expansion portion having at least one portion, at least one characteristic of which is selected to be different to a corresponding at least one characteristic of at least one other portion of the portion.
Specification