Medical Protector Tube Occlusion Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional puncture devices with protectors face issues with blood leakage and scattering during disposal, leading to contamination and infection risks.
Innovation Solution
A protector system with a movable outer and inner tube configuration that occludes the tube by biasing an extended part against a lumen inclined part, preventing blood leakage and housing the needle tip to prevent erroneous punctures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the puncture device is housed in the protector with the needle tip enclosed, then erroneous puncture is prevented, but blood remaining in the tube may leak and scatter from the distal end opening
Solution Approach 1:
The protector is divided into two functional segments: the outer tube that houses and protects the needle tip, and the inner tube that specifically addresses blood leakage. This segmentation allows each component to perform its specialized function independently - the outer tube prevents erroneous puncture while the inner tube occludes blood flow through its inclined part mechanism
Solution Approach 2:
The inner tube acts as an intermediary element between the blood-containing tube and the external environment. Its inclined part functions as a mechanical mediator that converts the pushing motion into radial compression force, thereby occluding the tube and preventing blood leakage without requiring direct contact with the blood or complex sealing mechanisms
2Ease of manufacture
If a conventional protector is used to house the needle tube, then the needle tip is protected, but the structure is simple and cannot prevent blood leakage from the tube
Solution Approach 1:
The inner tube is designed as a movable component that dynamically responds to the presence of the puncture device. When the puncture device is inserted, the inclined part automatically pushes against the extended part, causing the inner tube to move and compress the tube radially. This dynamic mechanism provides reliable blood leakage prevention while maintaining manufacturing simplicity through straightforward geometric design
Solution Approach 2:
The inclined part of the inner tube changes the spatial parameter configuration by converting axial motion into radial compression. As the inner tube moves axially upon insertion of the puncture device, the inclined surface transforms this linear displacement into radial force that reduces the tube diameter, thereby occluding blood flow through geometric parameter transformation rather than complex mechanical 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
Effectively prevents blood leakage and scattering, reducing contamination and infection risks during disposal of puncture devices, while ensuring the needle tip is safely housed.
Implementation Method 1
an inner surface of the lumen inclined part is abutted against the extended part and the extended part is biased by the lumen inclined part in a direction in which a diameter of the tube is reduced
Data Source
AI summary
A protector includes an outer tube and an inner tube. The outer tube includes an outer tube main body including an outer tube lumen for housing a puncture device, a holding part for holding a hub, and a lumen inclined part extended from the holding part. The inner tube includes an inner tube main body and an extended part. The inner tube main body is held in a proximal end side of the outer tube lumen and is movable in a proximal end direction of the outer tube lumen. The inner tube main body includes an inner tube lumen into which a tube is inserted. By moving the inner tube in a distal end direction, the inner surface of the lumen inclined part is abutted against the extended part, and the extended part is biased by the lumen inclined part in a direction in which a diameter of the tube is reduced.