Bony Bracket Screw with Oblique Arm for Distraction Osteogenesis
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Solution Overview
Problem
Current surgical methods for distraction osteogenesis require a strong holding plate bracket, which prolongs surgery time and recovery, and are unstable in cases with weak teeth or insufficient bone support, limiting their application.
Innovation Solution
A bony bracket screw with a cross-slot head, smooth and threaded shank, self-tapping tip, and an oblique bracket arm with a round retainer, made from stainless steel or biocompatible materials, providing secure fixation and support for distractors and dental appliances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a strong holding plate bracket is used to grip the traction bar, then the stability and strength of the distraction device is improved, but the surgery time is prolonged and recovery time is extended due to the need for surgical flap creation
Solution Approach 1:
The invention merges the bracket and screw into a single integrated unit where the bracket arm is directly formed as part of the screw structure. This eliminates the need for separate plate brackets and surgical flap creation, reducing surgery time while maintaining holding strength through the self-tapping screw mechanism that directly anchors into the bone.
Solution Approach 2:
The invention segments the distraction device into a minimally invasive screw component with an integrated bracket arm, replacing the traditional multi-component system requiring large incisions. The screw portion provides anchoring while the bracket arm provides distraction attachment, achieving both functions without surgical flap creation.
2Ease of operation
If a tooth band bracket is used, then the procedure is simplified, but the stability is insufficient when teeth are weak or bone support is inadequate
Solution Approach 1:
The invention applies local quality by providing different anchoring options: the screw can be anchored in strong bone tissue for maximum stability, or alternatively anchored in teeth when bone support is insufficient. The design adapts to local anatomical conditions, combining ease of application with reliability based on the specific patient's anatomy.
Solution Approach 2:
The invention changes the anchoring parameter from tooth-only attachment to either tooth or bone attachment. The screw design allows for flexible anchoring in different tissues, changing the fundamental parameter of where the device attaches to achieve both ease of operation and adequate stability.
3Strength
If traditional plate brackets requiring surgical flaps are used, then strong holding capability is achieved, but the complexity of the surgical procedure increases
Solution Approach 1:
The invention merges the bracket and screw into a single integrated component, eliminating the need for separate plate brackets, multiple fasteners, and surgical flap creation. This single-component design reduces surgical procedure complexity while maintaining holding capability through direct bone anchoring.
Solution Approach 2:
The invention extracts and eliminates the unnecessary surgical flap creation step from the traditional plate bracket procedure. By using a self-tapping screw that directly anchors into bone, the design removes the complex flap elevation, dissection, and closure steps while maintaining adequate holding capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quicker surgical procedures and improved stability for distraction devices, allowing for bone lengthening without the need for a surgical flap and supporting dental appliances in various bone conditions.
Implementation Method 1
a self-tapping or self-drilling tip
Implementation Method 2
a self-tapping or self-drilling tip
Implementation Method 3
a threaded lower portion
Implementation Method 4
a smooth upper portion
Data Source
AI summary
The bony bracket screw has a cross-slot head or a Phillips head and a shank extending from the head, the shank having a smooth upper portion, a threaded lower portion, and a self-tapping or self-drilling tip. The screw has an annual flange defining a stop disposed between the smooth upper shank and the threaded lower shank. The stop may have a larger diameter than the head. The screw has a bracket arm extending from the smooth upper shank at an oblique angle. The free end of the bracket arm has a round retainer, which may be circular or cylindrical and defines a smooth bore adapted for supporting a distractor or other dental appliance. The screw may be made from stainless steel or other noncorrosive, biocompatible material.