Ampoule Connection Part Threaded Segment Design
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Solution Overview
Problem
Conventional ampoules face challenges in providing a simple and cost-efficient method for fitting a removal device while ensuring a sealed transition, which is essential for medical liquid administration.
Innovation Solution
The ampoule features a connection part with integrally formed threaded portions offset along the longitudinal direction, enabling a Luer lock connection that ensures a defined fitting state and secure sealing with a removal device, such as a syringe, through a union nut screw connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional break-off part design is used, then the ampoule can be opened, but the fitting of a removal device is not simple and a sealed transition is not ensured
Solution Approach 1:
The connection part is divided into distinct functional elements: a threaded portion for mechanical attachment and a sealing portion for creating a sealed transition. This segmentation allows each element to be optimized independently - the threaded portion provides easy fitting through screw threads, while the sealing portion ensures a reliable sealed transition to the removal device
Solution Approach 2:
The break-off part is pre-configured with a specific geometry that includes a flange and a breaking point. Before use, the break-off part is attached to the ampoule body, and the breaking point is prepared in advance. When needed, the break-off part is broken off at the predetermined breaking point, leaving the flange in place to facilitate the fitting of the removal device. This preliminary preparation ensures both ease of operation and reliable sealing
2Reliability
If a complex connection part design is used to ensure sealed connection, then sealing is improved, but manufacturing complexity increases
Solution Approach 1:
The connection part merges multiple functions into a single integrated component: the threaded portion for mechanical attachment, the sealing portion for creating a sealed transition, and the integration with the ampoule body. This merging reduces the number of separate parts needed, simplifying manufacturing while ensuring reliable sealed connection through the integrated design
3Reliability
If multiple separate components are used for connection, then sealing can be ensured, but device complexity increases
Solution Approach 1:
The connection part is designed as an integrated structure where the threaded portion and sealing portion are combined in a single component that is formed as one piece with the ampoule body. This merging eliminates the need for multiple separate parts, reducing device complexity while maintaining reliable sealed transition through the integrated design
Data Source
AI summary
An ampoule for a medical liquid comprises an ampoule body for accommodating a medical liquid and a connection part for connecting a removal device to the ampoule, which connection part extends in a longitudinal extension direction and adjoins the ampoule body. The connection part and the ampoule body are formed as one piece and the connection part has a threaded segment having at least two thread turns arranged thereon, which are axially offset from each other in the longitudinal extension direction. The ampoule enables simple attachment of a removal device, creates a tight transition between a connection part and the removal device, is simple and economical to produce, and can provide a defined attachment state for the removal device on the ampoule.