Guided Puncturing Needle Angle Alignment
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Solution Overview
Problem
Current puncturing needle positioning devices are inaccurate due to reliance on human judgment and lack of precise alignment with CT scanning layers, leading to potential needle misplacement and increased risk during procedures.
Innovation Solution
A puncturing needle guiding device with a needle-entering angle guide, puncturing layer leveling component, and reference line leveling component that allows precise alignment and adjustment of the needle-entering angle and depth according to CT or MRI scanning data, enabling accurate puncture even when the CT gantry is inclined.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple hand-held puncturing needle guiding device is used, then the device complexity is reduced and ease of operation is improved, but the positioning precision and alignment accuracy with CT scanning layers deteriorate
Solution Approach 1:
The guiding device integrates multiple functions into a single instrument: it serves as both a positioning tool with leveling components and an angle guidance tool with angle indication scales, while also functioning as a handheld operational device. This multi-functionality allows the device to achieve precise positioning and alignment without requiring multiple separate instruments, thus maintaining ease of operation while improving measurement precision.
Solution Approach 2:
The device introduces intermediary components such as leveling bubbles and angle indication scales that act as mediators between the operator and the puncturing needle. These intermediaries provide visual feedback and guidance, enabling the operator to achieve precise alignment with CT scanning layers and accurate angle control without complex mechanical structures, thereby resolving the contradiction between simplicity and precision.
2Adaptability or versatility
If CT scanning is performed with the gantry inclined at an angle to obtain the focus point scanning layer, then the ability to access focus points at different depths and angles is improved, but the alignment between the needle-entering layer and scanning layer becomes more difficult without precise alignment components
Solution Approach 1:
The guiding device incorporates dynamic adjustment capabilities through rotatable components with angle indication scales and leveling bubbles that can be adjusted in real-time according to the CT gantry inclination angle. This allows the device to adapt to different scanning configurations while maintaining precise alignment between the needle-entering layer and the scanning layer, resolving the contradiction between adaptability and alignment precision.
3Reliability
If repetitive needle-entering is performed due to inaccurate initial positioning, then the chance of eventually reaching the focus point may be improved, but the risk of puncturing through by mistake and the pain to the patient increase
Solution Approach 1:
The device performs preliminary alignment and angle setting actions before the actual puncturing occurs. The leveling bubbles are adjusted to align with the scanning layer, and the angle indication scales are set according to the required puncture angle. This preliminary preparation ensures that the first needle insertion is accurate, eliminating the need for repetitive attempts and preventing harmful effects such as patient pain and potential puncture through mistakes.
Data Source
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AI summary
A guide puncturing needle which is integratively used with a scanning and detecting device, such as CT, MRI or the like, and provides puncturing, biopsy, injection, implanting, and the physical diagnose and therapy, such as RF, microwave, freezing, laser and the like, and a puncturing guide mothed for applying the pucturing needle to pucture are provided. Since the guide puncturing needle is provided with a needle-entering angle guide means (2), a pucturing layer levelling component (31), a needle-entering reference line levelling component (32), whether the CT gantry and the MRI scanning layer are at any angle, the actual needle-entering layer is always adjusted to just superpose to the CT scanning layer, the actual needle-entering angle is always just the same as the needle-entering angle needed for the scanning and detecting device, thus allow the puncturing needle to arrive at the focus point exactly accurately.