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US 12,048,459 B2Granted
Distraction osteogenesis device and methods
AssigneeThe Board of Regents of the University of Oklahoma
InventorChristian A. El Amm
Life of this patent
Estimating the term…
Abstract
The present disclosure is directed to implantable distraction osteogenesis devices and methods of their use. In a non-limiting embodiment, the device has a guide, a first bone attachment device slidably engaged with the guide, a force delivery mechanism coupled to the first bone attachment device and operably engaged with the guide, a regulator operably engaged with the force delivery mechanism, and a second bone attachment device rigidly fixed to the guide, wherein the force delivery mechanism is configured to exert a force to move the first bone attachment device along the guide at a predetermined rate, and the regulator is configured to control the movement of the first bone attachment device along the guide without percutaneous intervention.
Claims17
An implantable distraction osteogenesis device comprising:
- a guide;
- a first bone attachment device slidably engaged with the guide;
- a force delivery mechanism coupled to the first bone attachment device and operably engaged with the guide;
- a regulator operably engaged with the force delivery mechanism, wherein the regulator comprises a centrifugal regulator;
- and
- a second bone attachment device rigidly fixed to the guide, wherein:
- the force delivery mechanism is configured to exert a force to move the first bone attachment device along the guide at a predetermined rate;
- and
- the regulator is configured to control the force delivered to the first bone attachment device by the force delivery mechanism thereby controlling movement of the first bone attachment device along the guide without percutaneous intervention, and wherein the distraction osteogenesis device is totally subcutaneously implantable and is absent a percutaneous attachment for externally manipulating an internal portion of the device.
6 more elements
An implantable distraction osteogenesis device comprising:
- a guide;
- a first bone attachment device slidably engaged with the guide;
- a force delivery mechanism coupled to the first bone attachment device and operably engaged with the guide;
- a regulator operably engaged with the force delivery mechanism;
- and
- a second bone attachment device rigidly fixed to the guide, wherein:
- the force delivery mechanism is configured to exert a force to move the first bone attachment device along the guide at a predetermined rate;
- the regulator is configured to control the force delivered to the first bone attachment device by the force delivery mechanism thereby controlling movement of the first bone attachment device along the guide without percutaneous intervention, and wherein the distraction osteogenesis device is totally subcutaneously implantable and is absent a percutaneous attachment for externally manipulating an internal portion of the device;
- and
- the force delivery mechanism comprises a spring.
7 more elements
An implantable distraction osteogenesis device comprising:
- a guide;
- a first bone attachment device slidably engaged with the guide;
- a force delivery mechanism coupled to the first bone attachment device and operably engaged with the guide;
- a regulator operably engaged with the force delivery mechanism;
- and
- a second bone attachment device rigidly fixed to the guide, wherein:
- the force delivery mechanism is configured to exert a force to move the first bone attachment device along the guide at a predetermined rate;
- and
- the regulator is configured to control the force delivered to the first bone attachment device by the force delivery mechanism thereby controlling movement of the first bone attachment device along the guide without percutaneous intervention, and wherein the distraction osteogenesis device is totally subcutaneously implantable and is absent a percutaneous attachment for externally manipulating an internal portion of the device;
- and
- wherein the regulator further comprises:
- a balance wheel and balance spring;
- an escapement wheel and lever;
- one or more reduction gears;
- a spiral spring;
- a primary gear;
- and
- a pinion gear.
15 more elements
An implantable distraction osteogenesis device comprising:
- a guide;
- a first bone attachment device slidably engaged with the guide;
- a force delivery mechanism coupled to the first bone attachment device and operably engaged with the guide;
- a regulator operably engaged with the force delivery mechanism;
- and
- a second bone attachment device rigidly fixed to the guide, wherein:
- the force delivery mechanism is configured to exert a force to move the first bone attachment device along the guide at a predetermined rate;
- the regulator is configured to control the force delivered to the first bone attachment device by the force delivery mechanism thereby controlling movement of the first bone attachment device along the guide without percutaneous intervention, and wherein the distraction osteogenesis device is totally subcutaneously implantable and is absent a percutaneous attachment for externally manipulating an internal portion of the device;
- and
- the regulator is configured to control movement of the first bone attachment device along the guide without percutaneous intervention for a period in a range of 1 to 90 days.
7 more elements
A method of causing distraction osteogenesis in a bone of a subject in need of such therapy, the method comprising:
- (a) providing an implantable distraction osteogenesis device comprising:
- a guide;
- a first bone attachment device slidably engaged with the guide;
- a force delivery mechanism coupled to the first bone attachment device and operably engaged with the guide;
- a regulator operably engaged with the force delivery mechanism wherein the regulator comprises a centrifugal regulator;
- and
- a second bone attachment device rigidly fixed to the guide, wherein:
- the force delivery mechanism is configured to exert a force to move the first bone attachment device along the guide at a predetermined rate;
- and
- the regulator is configured to control the force delivered to the first bone attachment device by the force delivery mechanism thereby controlling movement of the first bone attachment device along the guide without percutaneous intervention;
- (b) securing the first bone attachment device and the second bone attachment device to the bone of the subject, wherein the distraction osteogenesis device is completely subcutaneously implanted and is absent a percutaneous attachment for externally manipulating an internal portion of the device;
- and
- (c) actuating the distraction osteogenesis device thereby causing a distraction force to be applied between the first bone attachment device and the second bone attachment device, wherein the distraction osteogenesis device operates without percutaneous intervention after actuation.
10 more elements
Dependencies are inferred from the claim text.