Vial Transfer Device Central Puncture Safety
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Solution Overview
Problem
Existing vial adapters are not injury-proof and can lead to leakage during use, posing risks for personnel and patients, especially with toxic substances, due to their design which allows for eccentric puncturing and potential finger penetration hazards.
Innovation Solution
A transfer device with a first hollow cylindrical part that surrounds the vial closure and a second part that can be adjusted, featuring a transverse wall to protect the puncturing needle and tongue-like lever elements to prevent axial adjustability without a vial, ensuring central puncturing and locking mechanisms to prevent withdrawal and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a steel cannula is used for puncturing, then the puncturing function is effective, but the device causes injury risk to personnel
Solution Approach 1:
The puncturing needle is extracted from free accessibility and enclosed within a protective hollow cylindrical structure. The needle remains functional for puncturing the vial closure but is shielded from direct contact with fingers, eliminating the injury risk while preserving the puncturing capability.
Solution Approach 2:
The puncturing needle is nested within the hollow cylindrical protective structure. The needle extends through the closure to perform puncturing while being contained within the protective cylinder, allowing the needle to function while being protected from causing injury to personnel.
2Ease of operation
If the adapter allows free adjustment, then the operation is easy, but the puncturing becomes eccentric causing leakage
Solution Approach 1:
A tongue-like lever element acts as an intermediary mechanism between the operator's action and the needle position. The lever provides a controlled adjustment path that guides the needle to the correct central position while still allowing easy operation through simple lever movement.
Solution Approach 2:
The device changes the adjustment parameter from free axial movement to controlled angular lever movement. This transforms the adjustment mechanism into one that naturally guides the needle to the correct position while maintaining ease of operation through simple lever actuation.
3Adaptability or versatility
If the first part can be adjusted freely, then the device is versatile, but the needle becomes accessible causing injury
Solution Approach 1:
The device is segmented into a fixed protective hollow cylindrical part and an adjustable inner assembly containing the needle. The protective part remains stationary to shield the needle, while the inner assembly can be adjusted for puncturing operations, separating the versatility function from the safety function.
Data Source
AI summary
The invention relates to a transfer device for tapping or delivering a fluid from a bottle sealed with a closure, the device having a hollow cylinder-shaped first part having a circumferential wall, which first part can be placed on the bottle and surrounds the closure, a hollow cylinder-shaped second part which can be adjusted with respect to the first part, the second part having a first wall running transverse to the longitudinal axis direction, and a puncturing needle originating from the first wall and extending in the direction of the first part permitting piercing of the closure, wherein the first part cannot be adjusted axially with respect to the second part if the closure is not surrounded and, if the first part surrounds the closure, the first part can be adjusted with respect to the second part for piercing the closure.