Electromagnetic Needle Navigation for Precise Minimally Invasive Puncture
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Solution Overview
Problem
Existing ablation tools lack the ability to intuitively determine the accurate relative position of the puncture or biopsy tool to the lesion, affecting sampling efficiency and precision during surgeries.
Innovation Solution
A minimally invasive puncture system utilizing an electromagnetic navigation module with multiple positioning sensors and an ultrasound imaging module to fuse real-time needle insertion trajectories with ultrasound images, providing a device navigation screen for precise guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional ablation tools are used without navigation systems, then the surgery is simple to perform, but the precision of puncture placement and real-time position monitoring is insufficient
Solution Approach 1:
The patent introduces electromagnetic positioning sensors as intermediary devices attached to the puncture needle and ultrasound probe. These sensors act as mediators between the surgical tools and the navigation system, enabling precise tracking of tool positions and trajectories without requiring complex modifications to the tools themselves. The sensors transmit position data to the control system, which processes and displays the information for real-time guidance.
Solution Approach 2:
The patent replaces traditional mechanical positioning and imaging systems with an electromagnetic navigation system. Instead of using complex mechanical linkages or optical tracking systems, the invention employs electromagnetic sensors that detect the position of the puncture needle and ultrasound probe in real-time. This substitution reduces mechanical complexity while maintaining or improving measurement precision.
2Reliability
If multiple electromagnetic positioning sensors are added to the puncture device, then the real-time trajectory monitoring is improved, but the device structure becomes more complex
Solution Approach 1:
The patent divides the puncture device into multiple segments, each equipped with its own electromagnetic positioning sensor. The first sensor is positioned on the puncture needle body portion, while the second sensor is on the handheld portion. This segmentation allows independent tracking of different parts of the device, enabling accurate determination of the needle's trajectory and orientation in real-time without requiring a monolithic complex structure.
Solution Approach 2:
The electromagnetic positioning sensors serve multiple functions: they track the position of the puncture needle, monitor the trajectory in real-time, and provide data for navigation guidance. By making these sensors multi-functional, the patent reduces the need for separate specialized components, thereby managing device complexity while maintaining high reliability for trajectory monitoring.
3Manufacturing precision
If real-time navigation feedback is implemented, then the surgical accuracy is improved, but the operation time and system complexity increase
Solution Approach 1:
The patent implements continuous real-time tracking and feedback throughout the puncture procedure. The electromagnetic sensors continuously monitor the position of the puncture needle, and the control system continuously processes this data to provide real-time navigation feedback. This continuous action eliminates the need for intermittent positioning checks, ultimately reducing total operation time while maintaining high surgical accuracy.
Solution Approach 2:
The system incorporates real-time feedback through the electromagnetic navigation module, which continuously monitors the puncture needle's position and trajectory and provides immediate feedback to the operator. This feedback mechanism allows for real-time adjustments to ensure accurate puncture placement, reducing the need for corrective actions or repeat procedures, thereby optimizing operation time.
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
Enhances the precision of puncture and biopsy procedures by allowing real-time adjustment and accurate placement of the puncture needle, improving surgical accuracy and efficiency.
Implementation Method 1
an electromagnetic navigation module, the electromagnetic navigation module including an electromagnetic positioning reading device, a first electromagnetic positioning sensor and a second electromagnetic positioning sensor
Implementation Method 2
an ultrasound imaging module, the ultrasound imaging module including an ultrasound probe, and the ultrasound imaging module being configured to generate a real-time ultrasound image based on detection information from the ultrasound probe
Data Source
AI summary
The provided is a minimally invasive puncture system based on a navigation system. The minimally invasive puncture system includes a puncture instrument and an electromagnetic navigation module. A first electromagnetic positioning sensor in the electromagnetic navigation module is fixedly provided on a puncture needle body portion of the puncture instrument, and a second electromagnetic positioning sensor is slidably sleeved on the puncture needle body portion. An electromagnetic positioning reading device in the electromagnetic navigation module is configured to acquire real-time coordinates of the first electromagnetic positioning sensor and the second electromagnetic positioning sensor, so as to obtain a real-time movement trajectory of the second electromagnetic positioning sensor relative to the first electromagnetic positioning sensor, thereby determining whether a real-time needle insertion trajectory of the puncture needle body portion entering the human body conforms to a system-default needle insertion trajectory.