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US 8,540,715 B2Granted
Locking rod fusion device
AssigneeTemple University of the Commonwealth System of Higher Education
InventorJason A. Piraino
Life of this patent
Estimating the term…
Abstract
A locking rod fusion device and method uses internal locking rods and screws that will lock together. In particular, the device allows the insertion of multiple locking rods in combination with a plate, which requires less dissection and disruption of soft tissues and vasculature. The device also provides a more stable internal construct for fusions that prevent non-unions, hardware failure and reoccurrence of deformities, such as Charcot foot. The device combines the strength of locking technology and the utility and ease of an internal rod system to provide a single stable construct in multiple planes as apposed to using multiple plates or screws separately.
Claims19
A locking rod fusion device, comprising:
- a vertical rod;
- an oblique rod having a posterior end and an anterior tip, the posterior end attached to the vertical rod, the oblique rod slanting downward slightly from the posterior end to the anterior tip to establish a slightly obtuse angle between the vertical rod and the oblique rod such that when the vertical rod is inserted through a plantar foot, the oblique rod is aligned for insertion through the medial column;
- a locking plate implant lockingly attached to the vertical rod and the oblique rod, the locking plate implant shaped to fit against an ankle bone, the locking plate implant including a plurality of apertures aligned with the vertical rod, the oblique rod and bones in the foot when fit against the ankle bone;
- a first connecting rod directly attached to the locking plate implant and the vertical rod, the locking plate implant and the vertical rod having a locked engagement therebetween from the direct attachment of said first connecting rod to the locking plate implant and the vertical rod;
- and
- a second connecting rod directly attached to the locking plate implant and the oblique rod, the locking plate implant and the oblique rod having a locked engagement therebetween from the direct attachment of said second connecting rod to the locking plate implant and the oblique rod.
3 more elements
A locking rod fusion device, comprising:
- a vertical rod;
- an oblique rod having a posterior end and an anterior tip, the posterior end attached to the vertical rod, the oblique rod slanting downward slightly from the posterior end to the anterior tip to establish a slightly obtuse angle between the vertical rod and the oblique rod such that when the vertical rod is inserted through a plantar foot, the oblique rod is aligned for insertion through the medial column;
- a calcaneocuboid rod having a posterior end and an anterior tip, the posterior end attached to the vertical rod, the calcaneocuboid rod slanting downward slightly from the posterior end to the anterior tip to establish a slightly obtuse angle between the vertical rod and the calcaneocuboid rod such that when the vertical rod is inserted through a plantar foot, the calcaneocuboid rod is aligned for insertion through the calcaneocuboid joint;
- a first connecting rod directly attached to the calcaneocuboid rod and the oblique rod, the calcaneocuboid rod and the oblique rod having a locked engagement therebetween from the direct attachment of said first connecting rod to the calcaneocuboid rod and the oblique rod;
- and
- a second connecting rod directly attached to the calcaneocuboid rod and adapted to lock the calcaneocuboid rod to an adjacent bone of the plantar foot.
3 more elements
A locking rod fusion device, comprising:
- a vertical rod;
- a locking plate lockingly attached to the vertical rod, the locking plate shaped to fit subcutaneously against an ankle bone, the locking plate including a plurality of apertures aligned with the vertical rod and with bones in the foot when fit against the ankle bone;
- a first connecting rod directly attached to the locking plate and to the vertical rod, the locking plate and the vertical rod having a locked engagement therebetween from the direct attachment of said first connecting rod to the locking plate and the vertical rod;
- and
- an oblique rod lockingly attached to the locking plate, the oblique rod having a posterior end and an anterior tip, the posterior end attached to the vertical rod, the oblique rod having an aperture aligned with one of the apertures of the locking plate, the oblique rod slanting downward slightly from the posterior end to the anterior tip to establish a slightly obtuse angle between the vertical rod and the oblique rod such that when the vertical rod is inserted through a plantar foot, the oblique rod is aligned for insertion through the medial column.
2 more elements
Dependencies are inferred from the claim text.