Needle Removal Device with Deformable Triangular Tube
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Solution Overview
Problem
The safe recovery and handling of sharp tools, such as needles, pose challenges due to the risk of physical injury and microbiological contamination, particularly in the medical field, where existing devices do not effectively separate the tool from the syringe without direct contact and ensure safe transport and collection.
Innovation Solution
A device featuring a deformable tube with a triangular section to wedge the tool, internal lugs for secure immobilization, a non-return mechanism, and a collection container, allowing for safe separation and storage of sharp tools without direct handling, using a gripping mechanism to protect the operator and prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the needle is detached from the syringe by manual handling, then the separation process is simple, but the risk of physical injury and contamination increases
Solution Approach 1:
The patent introduces a retrieval device as an intermediary tool between the operator and the needle-syringe assembly. The device includes a clamping mechanism with a movable clamp that can securely hold the needle while allowing controlled detachment from the syringe barrel, thereby eliminating direct hand contact with the sharp needle while maintaining operational simplicity
Solution Approach 2:
The retrieval device is segmented into distinct functional components: a handle for operator control, a clamping mechanism with movable clamp for securing the needle, and a release mechanism for controlled detachment. This segmentation allows each component to perform its specific function while maintaining safety and ease of operation
2Reliability
If a rigid clamping structure is used to secure the needle, then the needle is firmly held, but the device cannot accommodate needles of different diameters
Solution Approach 1:
The clamping mechanism employs a movable clamp that can dynamically adjust its position along the needle shaft. The clamp is spring-loaded or mechanically adjustable, allowing it to adapt to different needle diameters while maintaining firm contact. This dynamic adjustment capability enables the same device to securely hold needles of varying sizes without compromising reliability
Solution Approach 2:
The retrieval device is designed with universal adaptability through a adjustable clamping mechanism that can accommodate multiple needle diameters. The movable clamp and adjustable positioning system allow the single device to serve multiple functions across different needle sizes, eliminating the need for multiple specialized devices
3Reliability
If the tube cross-section is made deformable to conform to the tool shape, then the tool is securely clamped, but the manufacturing precision requirements increase
Solution Approach 1:
The tube cross-section utilizes material elasticity and plasticity parameters to achieve conformable clamping. The cross-sectional shape is designed with specific geometric features that allow controlled deformation under applied load, enabling the tube to adapt to the tool's contour without requiring extremely tight manufacturing tolerances. The material properties are selected to provide sufficient deformability while maintaining structural integrity
4Reliability
If lugs are added to prevent tool rotation, then the tool immobilization is enhanced, but the device complexity increases
Solution Approach 1:
The lugs are integrated directly into the tube structure as part of the clamping mechanism, rather than being separate components. The lugs are formed as integral features of the tube's cross-section, combining the rotation prevention function with the existing clamping structure. This merging approach enhances tool immobilization while avoiding the addition of separate complex components
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
Enables safe and efficient separation of sharp tools from their holders without direct contact, reducing the risk of injury and contamination, facilitating secure storage and transport through a combination of wedging, immobilization, and non-return mechanisms.
Implementation Method 1
The cross-section of the tube end deforms to conform to and clamp the shape of the tool's clamping end
Implementation Method 2
a triangular shape deforms better than a square or pentagonal shape to conform to the cylindrical shape of the needle's fixing end
Data Source
Figure 1~4
Figure 5~10
AI summary
The invention relates to a device for recovering a sharp tool such as a needle (1) suitable for mounting on a tool carrier such as a syringe (2) for integument puncture, said sharp tool displaying a substantially cylindrical attachment end. The device for recovering comprises a device for detaching (100) the tool from the tool carrier, said device for detaching comprising a tube (110) having a substantially conical shape wherein a first immobilisation end (111) displays, on a plane perpendicular to a longitudinal axis of the tube, a section having an appropriate shape and appropriate deformability for clamping the attachment end of the tool when said tool is forcibly inserted in the tube up to the first end of the tube. The invention is applicable to the recovery of needles in the medical industry.