Syringe Connection Port Blocking for Mandatory Drug Mixing
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Solution Overview
Problem
Patients may forget to mix drugs before administration, leading to erroneous recognition of a drug in a syringe for injection as a prepared drug and administering it without mixing, which can result in incorrect dosing.
Innovation Solution
A syringe set comprising a first syringe with a blocking member in its injection needle attachment structure that prevents attachment of an injection needle unless a second drug container is connected, ensuring drugs are mixed before needle attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking member is added to prevent needle attachment before mixing, then patient safety is improved, but device complexity increases
Solution Approach 1:
The blocking member is extracted as a separate removable component from the syringe assembly. It can be easily removed after mixing by pulling it out from the connection port, separating the safety function from the main injection function while maintaining both capabilities.
Solution Approach 2:
The blocking member is pre-installed on the syringe connection port before use. This preliminary action ensures that the safety mechanism is already in place when the patient receives the syringe, preventing accidental needle attachment before proper mixing occurs.
2Reliability
If a blocking member is installed to prevent erroneous needle attachment, then medication error prevention is improved, but ease of operation deteriorates
Solution Approach 1:
The blocking member is designed as a separate extractable component that can be easily removed by simply pulling it out from the connection port after mixing. This extraction mechanism maintains ease of operation while providing the safety function.
Solution Approach 2:
The blocking member is designed as a single-use component that is discarded after one use. This disposable nature simplifies the design, allowing it to be easily made and removed without requiring complex retrieval mechanisms, thereby maintaining ease of operation.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A syringe set (10), a syringe and a set include a first syringe (12) having a first connection port (30) and a drug container (14) having a second connection port (60). The first connection port (30) includes an injection needle attachment structure to which an injection needle (16) is attachable, and a blocking member (40) that is disposed in the injection needle attachment structure and blocks attachment of the injection needle (16). When the second connection port (60) is connected to the first connection port (30), the blocking member (40) is connected to the second connection port (60) side, and when the second connection port (60) is detached, the blocking member (40) is detached from the first connection port (30) so as to allow the injection needle (16) to be attached to the first connection port (30).