Infusion Set with Rotating Stopcock and Hydrophobic Filter
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Solution Overview
Problem
Conventional infusion sets face challenges with maintaining stability during patient movement, prone to twisting and weight distribution issues, leading to potential leakage and accidents, and require complex priming procedures that can result in contamination and equipment damage.
Innovation Solution
The infusion set features a cap with a hydrophobic filter and a clip or hook mechanism for secure attachment to the spike and tubing, allowing rotation of the infusion tubing and incorporating a three-way stopcock with rotating mechanisms, along with colored coding and packaging illustrations to prevent misidentification of administration procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional infusion sets are used with soft tubing and roller clamps, then administration dosage can be adjusted, but the infusion set becomes prone to twisting and weight distribution issues during patient movement
Solution Approach 1:
The infusion set is divided into modular components including separate infusion containers, tubing sections with roller clamps, and connection interfaces. This segmentation allows independent adjustment of dosage control elements while maintaining overall system stability through standardized connection points that prevent twisting.
Solution Approach 2:
The infusion set incorporates flexible tubing with controlled rigidity sections, allowing the system to adapt dynamically to patient movement while maintaining proper weight distribution. The tubing can bend and reposition itself without twisting, and the roller clamps can be independently adjusted during administration.
2Adaptability or versatility
If multiple infusion containers are linked and suspended from an IV stand, then multiple medications can be administered in sequence, but the distribution of weight is upset as administration causes the amount of infusion to decrease
Solution Approach 1:
The infusion containers are designed with equal height suspension points and standardized connection heights, creating an equipotential system where weight distribution remains balanced even as liquid volume decreases. This prevents the IV stand from becoming unstable during sequential administration of multiple infusions.
3Ease of manufacture
If containers are prepared with similar external appearance, then standardization is achieved, but misidentification of administration procedures and confusion about infusion lines can occur
Solution Approach 1:
While maintaining standardized container shapes and sizes for ease of manufacture, the system incorporates localized distinctive features such as color-coded labels, unique connector types, or positional markers on specific containers. This allows all containers to be produced using the same mold while still enabling reliable identification and prevention of administration errors.
4Reliability
If priming operations are performed to remove air from tubing, then air embolism risk is reduced, but contamination-free priming is difficult to achieve with conventional open systems
Solution Approach 1:
The system introduces a sterile barrier or closed-system priming mechanism as an intermediary between the infusion container and the tubing. This allows air to be removed during priming while maintaining a closed sterile field, preventing contamination of the infusion solution while still achieving the goal of air embolism prevention.
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
This design enables stable and secure infusion operations, reduces the risk of leakage and equipment damage, simplifies priming and backpriming, and prevents medication mix-ups by ensuring accurate administration order recognition.
Implementation Method 1
a cap, for installation on a spike, arranged at which there is an opening not permitting passage therethrough of solid or liquid but permitting passage therethrough of gas, a hydrophobic filter being arranged at a location inward from where the tip of the spike is inserted at the interior of the cap by way of an insertion port for the spike
Data Source
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AI summary
The present invention provides a novel infusion set in which a spike (2) or a connector (12) for connection with an intravenous drip needle is covered by a cap (6, 7), arranged at which there is an opening configured so as to not allow passage therethrough of solid or liquid but so as to allow passage therethrough of gas at the interior of the cap, a hydrophobic filter (6b, 7b) being arranged at a location inward from where the tip of the spike or the connector for connection with an intravenous drip needle is inserted at the interior of the cap by way of an insertion port, and a lid (6d, 7d) at the exterior of said opening for closing said opening; and in which a three-way stopcock (5) having a primary tubing downstream branch connector (5a) equipped with a mechanism that connects in such fashion as to permit rotation about primary tubing as axis is provided; coloring optionally being applied thereto, as a result of which it is possible to carry out priming and backpriming by means of a simple operation without leakage of liquid, and it is possible to maintain stability of the infusion set and IV stand, to prevent bodily pain to patients and leakage of liquid at locations where intravenous needles are inserted, and to prevent occurrence of accidents due to human error with regard to administration procedures, and which makes it possible to easily establish standard procedures for use.