Blood Circuit Adapter Set Preventing Erroneous Connections
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Solution Overview
Problem
Existing blood circuit systems face challenges in preventing erroneous connections during priming, which can compromise the reliability and operability due to similar appearances of connectors, and previous solutions that enhance versatility often hinder compatibility with standard puncture needles or increase operational complexity.
Innovation Solution
A blood circuit adapter set with adapters having distinct structures at their ends to prevent incorrect connections, ensuring communication between connectors and ports in a liquid-tight manner while maintaining compatibility with standard puncture needles and preserving operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connectors are formed into specific shapes to prevent erroneous connection, then connection reliability is improved, but compatibility with standard puncture needles is lost
Solution Approach 1:
The connection system is divided into two segments: the blood circuit connectors maintain a standard shape for puncture needle compatibility, while separate adapters provide the asymmetric connection interface for preventing erroneous connections during priming. This segmentation allows each component to fulfill its specific function without compromising the other.
Solution Approach 2:
An adapter acts as an intermediary component between the standard connector and the priming system. The adapter has a first end that connects to the standard connector and a second end with asymmetric structure that prevents erroneous connection to the priming port, thereby mediating between compatibility requirements and safety requirements.
2Reliability
If a resin member is provided to prevent erroneous connection, then connection reliability is improved, but operability during treatment is lowered
Solution Approach 1:
The error prevention function is extracted from the main blood circuit body and implemented through a separate, removable adapter. This allows the adapter to be present during priming to prevent erroneous connection, and then removed or left disconnected during treatment to avoid interfering with operator access and manipulation of the blood circuit.
Solution Approach 2:
The connection configuration is made dynamic: the adapter is connected during priming to provide error prevention, and can be disconnected or removed during treatment to improve operability. This dynamic adjustment allows the system to adapt to different operational phases and requirements.
Data Source
AI summary
An adapter set that is attached to artery-side and vein-side shunt connectors-that are provided on a blood circuit. The adapter set includes: an artery-side adapter that has one end thereof connected to the artery-side shunt connector, has the other end thereof connected to a drainage port that is provided on the outside of the blood circuit, and thereby connects the artery-side shunt connector and the drainage port fluid tight; and a vein-side adapter that has one end thereof connected to the vein-side shunt connector, has the other end thereof connected to a supply port that is provided on the outside of the blood circuit, and thereby connects the vein-side shunt connector and the supply port fluid tight. The structure of the other end of the artery-side adapter and the structure of the other end of the vein-side adapter are different.