Separable Needle Guide Plate Elements for Misalignment-Free Removal
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Solution Overview
Problem
Existing needle guides for intracorporeal puncture needle positioning pose challenges during removal, as they can cause misalignment due to manual extraction difficulties and require careful withdrawal, which is labor-intensive and prone to errors.
Innovation Solution
A needle guide design featuring separable upper and lower plate elements connected via a detachable frame structure, allowing for contact-free or low-contact separation and removal, preventing misalignment by enabling lateral withdrawal of frame parts from the puncture needle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the needle guide is designed as a rigid structure for precise positioning, then positioning accuracy is improved, but removal becomes difficult and prone to causing misalignment
Solution Approach 1:
The needle guide is divided into separable plate element parts that can be detached from each other. The upper plate element and lower plate element can be separated laterally, allowing the puncture needle to remain undisturbed while the guide components are removed. This segmentation resolves the contradiction by maintaining structural rigidity during positioning while enabling easy removal through separation of parts.
2Stability of the object's composition
If the through holes are dimensioned larger than the puncture needle outer diameter to prevent slipping, then positioning stability is improved, but manual extraction becomes extremely difficult
Solution Approach 1:
The plate elements are separated into multiple parts that can be detached laterally from the puncture needle. Instead of extracting a single rigid structure with large through holes, the segmented design allows each plate element part to be removed independently, simplifying the extraction process while maintaining positioning stability during use.
Solution Approach 2:
The plate element parts are designed to be extractable from the puncture needle after positioning is complete. The lateral separation capability allows the guide components to be taken out without disturbing the intracorporeally positioned needle, resolving the extraction complexity issue.
3Measurement precision
If the needle guide remains as a single rigid unit during the procedure, then positioning precision is maintained, but any adjustment or correction requires complete removal which is risky
Solution Approach 1:
The separable plate element parts allow for safe removal and potential repositioning without compromising the intracorporeal needle position. If adjustment is needed, the guide components can be detached and removed laterally, allowing the needle to remain in place or be repositioned safely without the risks associated with complete removal of a rigid structure.
4Manufacturing precision
If careful manual withdrawal is used to remove the needle guide, then misalignment can be avoided, but the process is extremely labor-intensive and error-prone
Solution Approach 1:
The segmented plate element parts can be separated laterally from the puncture needle without requiring careful manual withdrawal along the needle's spatial extent. This eliminates the labor-intensive and error-prone extraction process while maintaining alignment precision, as the parts simply detach rather than requiring controlled withdrawal.
Data Source
AI summary
The invention is a needle guide for performing intracorporeal location of a puncture needle to be percutaneously introduced into a patient, comprising an upper plate element, which face away from the patient, and a lower plate element, which faces the patient. The plate elements are rigidly spaced apart from one another and each provide through holes through which the puncture needle is guided. The invention has an upper and lower plate element which is separatable into at least two plate element parts, which, when joined together, commonly surround all of the through holes for each plate element.