Blinding Kit Segmentation for Clinical Trial Injection
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Solution Overview
Problem
Existing blinding devices for clinical trials are not suitable for administering medicaments via injection, as they fail to effectively conceal whether a medicament or inert substance is being administered, posing risks of unblinding and compromising patient safety and trial integrity.
Innovation Solution
A blinding kit comprising two identical-looking blinding devices with distinct fluid communication configurations, where one device is designed for placebo administration with a disconnected inlet and the other for verum administration with both inlets in fluid communication, ensuring that patients receive either a medicament or an inert substance without revealing the treatment type, and includes features like collecting reservoirs and encoded connectors to prevent unblinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a blinding device uses an opaque container to conceal the substance being administered, then the blinding effectiveness is improved, but the device complexity increases due to additional components needed for injection administration
Solution Approach 1:
The blinding device is segmented into distinct functional components: an opaque container for the liquid substance, a separate injection needle assembly, and a connection mechanism. This segmentation allows the opaque container to maintain blinding effectiveness while the separate needle assembly handles the injection function, reducing the complexity burden on the blinding component itself.
Solution Approach 2:
The patent introduces an intermediary connection mechanism between the opaque container and the injection needle. This intermediary component serves as a mediator that allows fluid transfer while maintaining the blinding function of the opaque container, thereby improving blinding effectiveness without requiring the entire injection system to be opaque or overly complex.
2Adaptability or versatility
If the blinding device is designed to be universally applicable to different administration methods, then the adaptability is improved, but the device complexity increases due to accommodating multiple configurations
Solution Approach 1:
The blinding device is designed with universal applicability by creating a standardized opaque container system that can work with different injection needles and administration routes. The connection mechanism is designed to accommodate various needle types and administration methods (subcutaneous, intramuscular, intravenous), allowing one blinding device design to serve multiple functions without requiring complex variations for each administration type.
3Loss of information
If the outlet is disconnected from one inlet in the placebo device, then the blinding protocol is maintained, but the ease of operation decreases due to potential confusion during administration
Solution Approach 1:
The connection between the inlet and outlet in the placebo device is made dynamic rather than permanently fixed. The connection mechanism allows for easy assembly and disconnection, enabling the placebo device to be quickly configured with a disconnected inlet-outlet relationship without requiring complex permanent modifications. This dynamic design maintains blinding protocol while preserving ease of operation through simple, reversible connection changes.
Data Source
AI summary
The present invention relates to a blinding kit for administering a medicament to a patient in a clinical trial, the blinding kit comprising: a first blinding device having an opaque container and having an outlet for administering a liquid substance to a patient and having at least a first and a second inlet, wherein the first inlet is in permanent fluid communication with the outlet and wherein at least the second inlet is disconnected from the outlet, a second blinding device having an opaque container and having an outlet for administering a liquid substance to a patient and having at least two inlets, wherein said at least two inlets are in permanent fluid communication with the outlet.