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US 11,471,200 B2Granted
Compression nut, a system and a method for treating a bone
AssigneeDePuy Synthes Products, Inc.
InventorsGregor Spreiter, Simon Scherrer, Henri Défossez, Markus Buettler, This Aebi
Life of this patent
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Abstract
A compression nut for treating a bone includes a head and a body extending longitudinally from the head to a free end. The body includes an exterior threading along an exterior surface of a threaded portion of the body separated from the head via an unthreaded portion. The nut also includes a channel extending longitudinally through the body. The channel includes an interior threaded extending along an interior surface of the channel configured to threadedly engage an end of a locking screw received therein.
Claims20
A compression nut for treating a bone, comprising:
- a head and a body extending longitudinally from the head to a free end, the head configured to engage an exterior surface of the bone, the body including an exterior threading along an exterior surface of a threaded portion of the body separated from the head via an unthreaded portion, wherein the unthreaded portion of the body includes a stepped lag so that a portion of the unthreaded portion adjacent the head has a larger diameter than a remaining portion of the unthreaded portion;
- and
- a channel extending longitudinally through the body and including an interior threading extending along an interior surface of the channel, the interior threading being configured to threadedly engage an end of a locking screw received therein to compress the head against an exterior surface of a bone into which the compression nut is inserted as the compression nut is threaded onto a locking screw.
A system for treating a long bone, comprising:
- an intramedullary nail insertable through a medullary canal of a bone, the intramedullary nail extending from a proximal end to a distal end and including a locking hole extending through the intramedullary nail along an axis extending at an angle relative to a longitudinal axis of the intramedullary nail;
- a locking screw configured to be inserted into the bone and through the locking hole, the locking screw including a head portion and a shaft extending therefrom to a free end, the shaft including a locking screw threading extending therealong;
- and
- a first compression nut configured to be inserted into bone, the first compression nut including a first head and a first body extending longitudinally from the first head to a free end, the first head being configured to engage an exterior surface of the bone, the first body including a first compression nut exterior threading along an exterior surface of a threaded portion of the first body separated from the first head via a first compression nut unthreaded portion and a first channel extending longitudinally therethrough, a first compression nut interior threading extending along an interior surface of the first channel to threadedly engage a portion of the locking screw, the first compression nut interior threading being configured to compress the first head against an exterior surface of a bone into which it is inserted as it is threaded onto the locking screw, wherein a portion of the first compression nut interior threading proximate the free end of the first compression nut includes an enlarged first compression nut crest configured to be deformed when the locking screw is threadedly received therein.
1 more element
A method for treating a bone, comprising:
- inserting an intramedullary nail into a medullary canal of a long bone through an insertion point at a distal end of the bone;
- inserting a first compression nut through the bone so that a channel of the first compression nut is substantially longitudinally aligned with a locking hole extending through a distal portion of the intramedullary nail, the first compression nut including a head and a body extending longitudinally from the head to a free end, wherein the head of the first compression nut engages an exterior surface of the bone as the first compression nut is inserted into the bone, and wherein a portion of the first compression nut interior threading proximate the free end of the first compression nut includes an enlarged first compression nut crest configured to be deformed when the locking screw is threadedly received therein;
- driving a locking screw through the bone so that a shaft of the locking screw extends across the bone and through the locking hole, a portion of the shaft threadedly received within and engaging the first compression nut, the locking screw including a head portion from which the shaft extends to a free end;
- and
- threading the locking screw into the first compression nut to compress the head against the exterior surface of the bone.
2 more elements
Dependencies are inferred from the claim text.