Thermoplastic Fastener with Laser Deformation for Bone Fixation
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Solution Overview
Problem
Current bone fracture fixation methods involving metal plates and screws are complex and time-consuming, requiring multiple instruments and procedural steps, which can prolong surgery duration and complexity.
Innovation Solution
A surgical fastener system comprising a thermoplastic body with a transmissive core and absorptive peripheral portion, capable of softening upon electromagnetic radiation absorption, is used in conjunction with a surgical device that includes a cutting mechanism and energy source to simplify the fixation process by cutting holes and attaching the fastener to bone structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal plates and screws are used for bone fracture fixation, then the fixation is strong and reliable, but the surgical procedure becomes complex and time-consuming
Solution Approach 1:
The patent combines multiple surgical functions (cutting, fastener insertion, and fastener deformation) into a single integrated surgical device. The device integrates a cutting mechanism with a fastener delivery system and an energy source, eliminating the need for separate instruments for each step and thereby reducing procedural complexity while maintaining fixation reliability
Solution Approach 2:
The surgical device is designed as a multi-functional instrument that can perform cutting, fastener delivery, and fastener deformation operations. This universal device replaces multiple specialized instruments, simplifying the surgical workflow while achieving the same reliable fixation outcome
2Manufacturing precision
If multiple instruments are used for cutting and screw placement, then precise hole cutting and screw insertion are achieved, but the surgery duration increases
Solution Approach 1:
The fastener is pre-loaded into the surgical device before the surgical procedure begins. The cutting mechanism creates the hole and the fastener is simultaneously inserted and deformed, eliminating the time required for separate fastener insertion steps while maintaining precise hole cutting through the integrated design
Solution Approach 2:
The patent merges the cutting operation and fastener insertion operation into a single coordinated action performed by one integrated device. The cutting mechanism and fastener delivery system work together in unison, reducing the number of procedural steps and overall surgery duration while preserving cutting precision
3Strength
If conventional screws are used, then secure bone fixation is achieved, but multiple procedural steps and instruments are required
Solution Approach 1:
The patent replaces the traditional mechanical screw threading system with a polymer fastener that is deformed using electromagnetic energy (laser or radiofrequency). This substitution eliminates the need for threaded screw mechanisms and pre-drilled holes, reducing the number of instruments needed while maintaining fixation strength through the deformed fastener geometry
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
This solution streamlines the bone fixation process by allowing a single device to cut holes and attach a bone plate to bone using polymer-based fasteners that deform and harden quickly, reducing procedural complexity and duration.
Implementation Method 1
the second portion of the body may be absorptive to electromagnetic radiation such that upon absorbing electromagnetic radiation the second portion of the body softens
Implementation Method 2
the second portion of the body may be absorptive to electromagnetic radiation such that upon absorbing electromagnetic radiation the second portion of the body softens
Implementation Method 3
The cutting mechanism may be configured to extend through the bore of the fastener and cut into a target anatomical location
Implementation Method 4
The energy source may be configured to heat and soften a portion of the fastener
Implementation Method 5
The energy source may be configured to heat and soften a portion of the fastener
Implementation Method 6
the second portion of the body may be absorptive to electromagnetic radiation such that upon absorbing electromagnetic radiation the second portion of the body softens and is capable of deforming
Data Source
AI summary
A bone fixation system is provided. The bone fixation system may include a plate, one or more fasteners configured to attach the plate to a target anatomical location such as bone, and a surgical device that facilitates the attachment of the plate and the fasteners.