Dual-Wings Percutaneous Needle Laser Alignment
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Solution Overview
Problem
Conventional percutaneous needles struggle to accurately align with transverse and longitudinal laser beams during biopsy procedures, relying heavily on the doctor's experience and intuition, leading to potential patient pain and complications due to deviations in puncturing angle.
Innovation Solution
A dual-wings percutaneous needle design featuring a sampling needle, an outer needle, and both transverse and longitudinal position wings, allowing for precise alignment with laser beams to adjust the puncturing angle and ensure accurate tissue specimen collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional percutaneous needle is used, then the structure is simple, but the alignment precision with laser beams is poor
Solution Approach 1:
The needle assembly is divided into separate components: outer needle, inner needle, transverse position wing, and longitudinal position wing. This segmentation allows each component to serve a specific function while maintaining overall simplicity. The position wings are separate elements that can be independently adjusted to align with laser beams.
Solution Approach 2:
The position wings serve as intermediary elements between the needle and the laser beam alignment system. These wings provide visual references that mediate the alignment process, allowing the doctor to accurately position the needle by matching the wings with the laser beams without directly manipulating complex alignment mechanisms.
2Measurement precision
If a conventional percutaneous needle is used, then the device is easy to operate, but the puncturing angle accuracy is poor
Solution Approach 1:
The position wings provide visual references that work with the laser beam lighting system. The wings can be designed with contrasting colors or markings that are easily visible against the laser beams, allowing for quick and accurate angle adjustment without complex measurement tools.
Solution Approach 2:
The position wings are pre-configured at specific angles relative to the needle shaft. This preliminary positioning allows the doctor to simply attach the wings and immediately have reference markers ready for alignment, eliminating the need for complex angle calculation or adjustment during the procedure.
3Reliability
If the puncturing angle has large deviation, then the operation is simpler, but the patient harm increases
Solution Approach 1:
The position wings provide real-time visual feedback during the puncturing process. As the doctor adjusts the needle angle, the position of the wings relative to the laser beams immediately indicates whether alignment is correct, allowing for continuous adjustment until the desired precision is achieved, thereby ensuring reliable specimen collection and minimizing patient harm.
Data Source
AI summary
A dual-wings percutaneous needle has a sampling needle, an outer needle, a transverse position wing and a longitudinal position wing. The sampling needle has a length, a lower end and a needle head formed in the lower end of the sampling needle. The outer needle is hollow, is detachably mounted around the sampling needle and has a length shorter than the length of the sampling needle. The transverse position wing is lamellar, is stuck on the sampling needle or is stuck on the outer needle. The longitudinal position wing is lamellar, is stuck on the sampling needle adjacent to the transverse position wing and is perpendicular to the transverse position wing or is stuck on the outer needle adjacent to the transverse position wing and is perpendicular to the transverse position wing.