Laser Surgical Alignment Guide for Joint Resection
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Solution Overview
Problem
Current methods for guiding surgical cuts in total joint replacement surgery, such as computer-aided guidance and manually verified metal rods, lack accuracy in real-world scenarios, necessitating an improved alignment tool for surgeons.
Innovation Solution
A laser guide comprising a base plate, end plate, horizontal and vertical laser assemblies, a switch, and a battery, which projects orthogonal laser beams to assist surgeons in verifying the position and alignment of surgical cuts, enhancing precision and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If computer-aided guidance or manually verified metal rods are used to guide surgical cuts, then the surgical alignment can be verified, but the accuracy is insufficient in real-world scenarios
Solution Approach 1:
The patent replaces traditional mechanical alignment tools (metal rods, manual guides) with a laser-based optical system. The laser guide device projects visible laser lines onto the bone surface, allowing surgeons to verify cut alignment optically rather than mechanically, thereby achieving higher accuracy in real-world surgical conditions
Solution Approach 2:
The invention changes the measurement parameter from physical contact (metal rods touching bone) to optical projection (laser lines on bone surface). This parameter change enables more precise alignment verification by providing visual feedback that is easier to interpret and more accurate than mechanical verification methods
2Manufacturing precision
If traditional metal rod guides are used, then the device structure is simple, but the alignment precision is insufficient
Solution Approach 1:
The patent substitutes complex mechanical adjustment mechanisms with a simpler laser-based system. Instead of requiring precise mechanical fabrication and adjustment of metal guides, the system uses laser projection which can be accurately calibrated and adjusted electronically, reducing manufacturing complexity while improving precision
Solution Approach 2:
The laser guide device integrates multiple functions into a single unit: it provides alignment guidance, verification, and visualization simultaneously. The device can be adapted to different surgical scenarios through software configuration rather than requiring different physical guides, reducing overall system complexity
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
The laser guide provides accurate and reliable alignment assistance, improving the precision of surgical cuts by projecting visible laser lines that help surgeons confirm the location and orientation of cuts, thereby enhancing the accuracy of surgical resections.
Implementation Method 1
a laser emitting device and a lens, said lens being affixed to a light emitting end of said laser emitting device
Data Source
AI summary
The present invention relates to a laser assisted surgical resection alignment guide for performing joint resection surgery. The present invention includes a base plate containing a switch which activates orthogonal laser assemblies when the laser assisted surgical resection alignment guide is inserted into a surgical block. The orthogonal laser assemblies each project beams which are each refracted by lenses to project two laser lines onto a human who has been prepared for surgery.