US 2010/0305618 A1Published application

Orthopedic plate

AssigneeOrthohelix Surgical Designs, Inc.

InventorsDavid B. Kay, Lee A. Strnad, Dustin Ducharme, G. Martin Wynkoop

Life of this patent

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Abstract

The present invention relates to an orthopedic plate and screw system and instruments for surgical fixation of a small bone or bones including specifically the small bones of the spine. The plate facilitates three dimensional contouring to provide for a variety of applications and to accommodate individual variation in bone shape. The plate has a modified x shape including a central trunk portion including one or more screw holes along a longitudinal axis and a set of divergent upper and an oppositely extending set of divergent lower arms, each arm including screw holes which are placed at a radially equal distance but which diverging asymmetrically from the longitudinal axis relative to its paired upper or lower mate. The screws of the system are self-starting, self-tapping screws including the option of partial or full cannulation. In a further embodiment, the plate is intended for use through the length of the spine.

Claims18

Dependent claims

A method of enabling a surgery on one or more of a set of bones comprising the ulna, radius, tibia, fibula, metacarpals, carpals, metatarsals, tarsals, and phalanges comprising

providing a plate and screw system and instruments for use in surgical fixation of a small bone or bones, said system including a pre-contoured plate which is a X-shaped plate, the plate comprising a trunk defining a longitudinal axis with a first end and an opposing second end, and first pair of a first arm and a second arm extending from the first end of the trunk and a second pair of a first arm and a second arm extending from the second end of the trunk, the trunk having a constant radial curve in the z direction about the longitudinal axis, and the first arm and the second arm of each of the first pair and of the second pair following the radial curve of the trunk so that the first arm and the second arm of a pair spiral about the longitudinal axis toward each other,
each of the first arms having an ear with at least one screw hole defining a first screw axis perpendicular to a tangent to the top surface of the first ear, the first ear being attached to the trunk by a linking section having a waist, a first angle and a first length being defined by a line from the center of the first arm screw hole to the intersection of the longitudinal axis of the trunk,
each of the second arms having a second ear with at least one second screw hole defining a second screw axis perpendicular to a tangent to the top surface of the second ear, the second ear being attached to the trunk by a linking section having a waist, a second angle and a second length being defined by a line from the center of the second arm screw hole to the intersection of the longitudinal axis of the trunk,
the first angle and the first length being different from the second angle and the second length whereby the first screw axis and the second screw axis converge toward the inferior side of the plate but do not intersect;
and
said system further comprising a plate bender which will bend the linking section of the first arm and the second arm without deforming the screw hole of the arm.

3 more elements

A method of performing a surgery on one or more of a set of bones comprising the ulna, radius, tibia, fibula, metacarpals, carpals, metatarsals, tarsals, and phalanges comprising

accessing the bone by opening a wound;
selecting a pre-contoured plate which is a X-shaped plate, the plate comprising a trunk defining a longitudinal axis with a first end and an opposing second end, and first pair of a first arm and a second arm extending from the first end of the trunk, and a pair of a first arm and a second arm extending from the second end of the trunk, the trunk having a constant radial curve in the z direction about the longitudinal axis, and each of the first arm and the second arm of the first pair and the second pair following the radial curve of the trunk whereby the first arm of the first pair and the second arm of the first pair and the first arm of the second pair and the second arm of the second pair spiral about the longitudinal axis toward each other, each of the first arms having an ear with at least one screw hole defining a first screw axis perpendicular to a tangent to the top surface of the first ear and each of the first ears being attached to the trunk by a linking section having a waist, a first angle and a first length being defined by a line from the center of the first arm screw hole to the intersection of the longitudinal axis of the trunk, each of the second arms having a second ear with at least one second screw hole defining a second screw axis perpendicular to a tangent to the top surface of the second ear and each of the second ears being attached to the trunk by a linking section having a waist, a second angle and a second length being defined by a line from the center of the second arm screw hole to the intersection of the longitudinal axis of the trunk, the first angle and the first length being different from the second angle and the second length whereby the first screw axis and the second screw axis converge toward the inferior side of the plate but so not intersect;
using a plate bender to bend the linking section of the first arm and the second arm without deforming the screw hole of the arm,
attaching the bent plate to the bone, and
surgically closing the wound.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/804,775Filed 29 Jul 2010
Priority: 28 Jan 2005
Published: 2 Dec 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

A61B 17/8061
Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates:…
A61B 17/8066
Specially adapted for particular bones: for pelvic reconstruction
A61B 17/8085
Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates:…
A61B
Medical diagnosis and surgery

Family

Application60/648,364Us provisional application · filed 28 Jan 2005
Application60/691,171Us provisional application · filed 16 Jun 2005
Application11/340,027Division · filed 26 Jan 2006
Application12/804,775Division
US 2006/0200145 A1Published application
US 7,799,061 B2Related patent
US 8,231,663 B2Related patent
US 2010/0305618 A1This patent

From the US filing history. Foreign family members aren’t listed.