Orthopaedic trauma hip screw assembly
First Claim
1. A fracture reduction assembly for fixation of a fractured bone, comprising:
- a base portion including a bone contacting surface for contacting a bone and an upper surface opposite to the bone contacting surface;
a barrel with a first end portion connected to the bone contacting surface, the base portion and the barrel defining a bore extending through the barrel and the base portion and opening at the upper surface of the base portion;
a screw portion including a shaft with a first diameter sized to fit within the bore and a threaded portion with a second diameter sized to not fit within the bore, wherein at least a portion of the shaft is positioned within the bore; and
a retainer coupled with the shaft and having a third diameter sized to fit within a first portion of the bore but not within a second portion of the bore;
wherein the shaft further comprises a coupling member;
the retainer is coupled with the coupling member of the shaft;
the length of the screw portion between the coupling member and the threaded portion with a second diameter sized to not fit within the bore is greater than the length of the bore from the at least one diameter to the upper surface of the base;
the coupling member of the shaft comprises a recessed area in the outer surface of the shaft; and
the retainer defines a protuberance configured to fit at least partially within the recessed area.
2 Assignments
0 Petitions
Accused Products
Abstract
A fracture reduction assembly and method for insertion of the assembly through a surgical site in one embodiment includes a base portion including a bone contacting surface and an upper surface, a barrel with a first end portion connected to the bone contacting surface, the base portion and the barrel defining a bore extending through the barrel and the base portion and opening at the upper surface of the base portion, a screw portion including a shaft with a first diameter sized to fit within the bore and a threaded portion with a second diameter sized to not fit within the bore, wherein at least a portion of the shaft is positioned within the bore, and a retainer coupled with the shaft and having a third diameter sized to fit within a first portion of the bore but not within a second portion of the bore.
43 Citations
6 Claims
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1. A fracture reduction assembly for fixation of a fractured bone, comprising:
- a base portion including a bone contacting surface for contacting a bone and an upper surface opposite to the bone contacting surface;
a barrel with a first end portion connected to the bone contacting surface, the base portion and the barrel defining a bore extending through the barrel and the base portion and opening at the upper surface of the base portion; a screw portion including a shaft with a first diameter sized to fit within the bore and a threaded portion with a second diameter sized to not fit within the bore, wherein at least a portion of the shaft is positioned within the bore; and a retainer coupled with the shaft and having a third diameter sized to fit within a first portion of the bore but not within a second portion of the bore;
wherein the shaft further comprises a coupling member;
the retainer is coupled with the coupling member of the shaft;
the length of the screw portion between the coupling member and the threaded portion with a second diameter sized to not fit within the bore is greater than the length of the bore from the at least one diameter to the upper surface of the base;
the coupling member of the shaft comprises a recessed area in the outer surface of the shaft; and
the retainer defines a protuberance configured to fit at least partially within the recessed area. - View Dependent Claims (2, 3, 4, 5, 6)
- a base portion including a bone contacting surface for contacting a bone and an upper surface opposite to the bone contacting surface;
Specification