Dental Implant Detector Using Constant Current Source
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for locating dental implants in the jawbone, such as X-ray imaging, often result in inaccurate or overlapped images, making it difficult to find the precise position of implants, which can lead to medical accidents.
Innovation Solution
A portable dental implant detector using a constant current source with a PCB-based sensor and locator system, featuring involute racetrack copper coils and a frequency conversion module, which produces a magnetic field to detect metallic implants and provide accurate positioning through LED indicators and adjustable frequency scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If X-ray devices are used to take pictures of the oral cavity to find the position of implants, then the rough position of implants can be identified, but the images will be overlapped or distorted when implants are close to each other, resulting in inaccurate positioning
Solution Approach 1:
The patent replaces the X-ray imaging system with a magnetic detection system using electromagnetic induction. The detecting coil generates a magnetic field that interacts with metallic implants, inducing eddy currents that produce detectable magnetic signals. This substitution eliminates image overlap and distortion issues inherent in X-ray imaging, providing accurate three-dimensional positioning of implants without radiation.
Solution Approach 2:
The patent employs frequency scanning technology, varying the excitation frequency to optimize detection of implants at different depths and positions. By changing the frequency parameter of the magnetic field, the system can selectively detect implants at various locations in the jawbone, improving positioning accuracy and avoiding signal overlap through frequency discrimination.
2Use of energy by moving object
If a portable detector with PCB-based sensor is designed, then portability and low energy consumption are achieved, but anti-interference capability and detection sensitivity must be maintained
Solution Approach 1:
The patent implements a dual-coil structure on the PCB with different functions: the first coil is optimized for generating magnetic fields at lower frequencies, while the second coil operates at higher frequencies. Each coil has specific geometric parameters (turns, area, spacing) tailored to its frequency range, enabling efficient energy consumption across different detection depths while maintaining signal quality and anti-interference capability through frequency-selective operation.
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 system ensures accurate and quick detection of dental implants, preventing radiation injuries and contamination risks, with low energy consumption and effective anti-interference capabilities, facilitating precise implant localization.
Implementation Method 1
a constant current source 10 connected with the detecting coils (12) to supply current to the detecting coils (12)
Implementation Method 2
The sinusoidal AC flowing through the above coil can be adjusted between 230 kHz and 240 kHz in frequency
Implementation Method 3
when the magnetic field interacts with the metallic dental implant buried under the gum, it will produce induced electromotive force inside the implant, as a result of which, an induced current is generated
Data Source
AI summary
This invention specially refers to a dental implant detector using constant current source and its detecting method, which falls within the scope of anti-interference, high-sensitivity dental implant detection. It is composed of the detecting sensor, the detecting sensor socket and the implant locator. The detecting sensor socket is connected with the detecting sensor and the implant locator at two ends respectively. The detecting sensor is built with a PCB base and detecting coils mounted on the layer and plane of the PCB base. The involute racetrack copper coil on the plane of the PCB base is smaller than that on the layer by 0.1 mm both laterally and longitudinally. The implant locator is built mainly with a CPU with power supply, a constant voltage module, a status display control module and a frequency conversion module. The detector, highly sensitive, easy to operate and very accurate for location, has solved the problems like time-consuming, inaccuracy and slowness of traditional detection method. With it, the dentists are able to find the dental implant quickly and accurately before the operation, which helps reduce incidence of medical accidents.