Smart Joint Replacement Detector With Laser Alignment And Force Balance Verification
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Solution Overview
Problem
Current surgical instruments for artificial joint replacement face challenges such as complications from drilling intramedullary holes, lengthy operation times, and imprecise alignment due to the use of large and cumbersome alignment devices, which burden both surgeons and patients.
Innovation Solution
A smart surgical instrument equipped with laser devices for alignment, rotation detection means, and pressure detection means, eliminating the need for drilling intramedullary holes and extramedullary aligners, and providing precise numerical verification for alignment and balance, thereby simplifying and speeding up the surgical process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If intramedullary holes are drilled for alignment, then alignment precision is improved, but bone cell damage and infection risk increase
Solution Approach 1:
The patent extracts the alignment function from the intramedullary rod system and implements it through external alignment devices that do not require drilling into the bone, thereby eliminating bone cell damage while maintaining alignment precision
Solution Approach 2:
The patent replaces the mechanical drilling and intramedullary rod insertion system with an optical/laser-based alignment system that provides precise alignment without physical intrusion into the bone structure
2Measurement precision
If extramedullary aligners are used for tibia resection, then alignment accuracy is improved, but operation time and procedural complexity increase
Solution Approach 1:
The patent extracts the alignment function from cumbersome extramedullary aligners and implements it through a compact alignment device with laser guidance that achieves accurate alignment without requiring large external structures
Solution Approach 2:
The patent uses laser beams to create virtual alignment references that replace physical alignment markers and guides, enabling rapid and accurate alignment without physical contact with the bone surfaces
3Stability of the object's composition
If deep holes are drilled for intramedullary rods, then alignment stability is improved, but fat embolism risk and surgical complexity increase
Solution Approach 1:
The patent extracts the alignment stabilization function from the intramedullary rod system and provides it through external fixation and laser guidance, eliminating the need for deep bone drilling and associated fat embolism risks
Solution Approach 2:
The patent introduces laser beams as an intermediary alignment reference that mediates between the surgeon's visual system and the bone anatomy, providing stable alignment guidance without physical intrusion into the bone marrow cavity
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 smart surgical instrument reduces surgical burdens, minimizes complications, and enables precise and accurate alignment and balance verification, improving surgical efficiency and patient recovery outcomes.
Implementation Method 1
a laser beam emitting means for emitting a laser beam toward the proximal end of the femur from the front side of the femur
Implementation Method 2
a laser beam emitting means for emitting a laser beam toward the distal end of the tibia from the front side of the tibia
Implementation Method 3
a rotation detection means for detecting a rotation angle of the fixing portion
Implementation Method 4
a pressure detection means for detecting a pressure applied to the detector
Data Source
AI summary
A detector for use in artificial joint replacement includes a rotation detection apparatus and a pressure detection apparatus and is inserted between implant trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials.