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Metacarpal bone stabilization device

a technology of metacarpal bone and stabilization device, which is applied in the direction of osteosynthesis device, screws, threaded fasteners, etc., can solve the problems of metacarpal bone damage, affecting the healing effect of the metacarpal bone, and requiring a second surgery to remove, so as to eliminate migration

Inactive Publication Date: 2016-10-13
LOGIMESH IP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The device effectively stabilizes the metacarpal bone with reduced risk of migration and eliminates the need for a second surgical procedure, minimizing tissue damage and improving insertion ease with lower torque requirements.

Problems solved by technology

Damage to the metacarpal bone may occur as a result of a sprain or fracture.
Problems with the nail are that, because it is not anchored in the bone, it can migrate through the metacarpal bone and into surrounding tissue.
Sometimes this can result in damage to soft tissue, such as a severed or damaged tendon or cartilage, and / or cause pain.
Another problem with the nail is that, because it can migrate, a second surgery is required to remove it.
Additionally, the proximal end of pins and nails can cause tendon irritation, tendon rupture or skin irritation and infection.
A major problem with such a technique (which to the inventors' knowledge is not utilized and is not prior art) is that the torque required to place a screw into the length of a metacarpal bone (which is a relatively thin, delicate bone) is high.
Such a procedure would be lengthy, and there would be a possibility of bone damage, or damage to the driving head of the screw, which could prevent complete insertion into the opening formed in the bone.
Current screws are not designed specifically for intramedullary placement.
For instance, the current screws are frequently not long enough.

Method used

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Examples

Experimental program
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Effect test

example 1

[0035]A device for repairing a bone, the device for being received in the bone and comprising:[0036]a. a shaft having a length and an outer surface,[0037]b. a first end, a second end and a center portion between the first end and the second end;[0038]c. threads on the outer surface, wherein the threads comprise 25% or less of the shaft length; and[0039]d. a driving surface at the first end.

example 2

[0040]The device of example 1 wherein the device is comprised of one or more of nitinol, stainless steel and titanium steel.

example 3

[0041]The device of example 1 or 2 that has one or more grooves on the outer surface, the grooves extending length wise along the outer surface.

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Abstract

A device and method for stabilizing a broken bone while it heals is disclosed. The device is preferably a metal rod that has a threaded portion. The device is positioned into a bone, such as a metacarpal bone, by forming an opening in the bone suitable for receiving the device, and inserting it into the opening wherein the threaded portion retains the device in position.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of application Ser. No. 13 / 940,173 filed on Jul. 11, 2013 titled “METACARPAL BONE STABILIZATION DEVICE”, which claims priority under 35 U.S.C. 119(e) to U.S. Provisional Patent Application No. 61 / 671,021, filed Jul. 11, 2012.FIELD OF THE INVENTION[0002]The present invention relates to a device implantable in a bone to stabilize it while it heals, and which is particularly suitable for use in a metacarpal bone.BACKGROUND OF THE INVENTION[0003]The palm of the hand is made up of bones called metacarpals, and a metacarpal connects each finger and thumb to the hand. Each finger and thumb is formed of bones called phalanges. The connection of the phalanges to the metacarpals is called a “knuckle” joint or metacarpophalangeal joint (MCP joint), and acts like a hinge when the fingers or thumb are bent.[0004]In each finger, there are three phalanges that are separated by two joints called the interphalangeal join...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/86
CPCA61B17/863A61B2017/8655A61B17/8635A61B17/8605A61B17/8625A61B17/56A61B17/72A61B17/7233A61B17/7291A61B17/84A61B17/846A61B17/86A61B2017/564A61F2/4241F16B25/0015F16B25/0057
Inventor CHAMPAGNE, LLOYD P.ZOLDOS, JOZEF
Owner LOGIMESH IP