Balloon Injector Assembly With Folded Tube to Eliminate Dead Space
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Solution Overview
Problem
Existing balloon-type liquid medicine injectors suffer from unnecessary dead space and assembly difficulties due to fixing mechanisms, leading to inefficiencies and increased size and weight, which are exacerbated by the need for additional packing mechanisms to maintain airtightness.
Innovation Solution
A design where the tube body is folded and inserted into the fixed tube, with an integrated injection and stopper mechanism, and a tightening mechanism to secure the assembly without separate packing, minimizing dead space and ensuring airtightness, while using stepped surfaces and recess grooves to facilitate smooth liquid transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixing mechanism is used to fix the tube body, then the tube body can be firmly fixed, but dead space is generated and assembly complexity increases
Solution Approach 1:
The invention removes the separate fixing mechanism from the system. Instead of using an additional component to secure the tube body, the tube body itself is designed with self-fixing capability through its folded structure that inserts into the fixed tube, eliminating unnecessary components and reducing assembly complexity while maintaining fixation stability
Solution Approach 2:
The tube body is designed to automatically fix itself by folding and inserting into the fixed tube without requiring external fixing mechanisms. The structure enables self-contained fixation where the tube body's own geometry and elasticity provide the securing function, eliminating dead space and reducing overall device complexity
2Reliability
If a packing mechanism is used to maintain airtightness, then sealing is improved, but assembly complexity and number of parts increase
Solution Approach 1:
The invention combines the sealing function with the existing tube body and fixed tube structure. The airtightness is achieved through the integrated design where the folded tube body inserts into the fixed tube, and the sealing is provided by the interaction between these two main components without requiring separate packing mechanisms, thereby reducing the number of parts while maintaining reliability
Solution Approach 2:
The system achieves self-sealing through the elastic deformation and friction between the folded tube body and the fixed tube during insertion. The structure itself provides the sealing action without needing additional packing components, reducing assembly complexity while ensuring airtightness
3Volume of stationary object
If the tube body is not folded and inserted into the fixed tube, then assembly is simpler, but dead space increases and miniaturization is prevented
Solution Approach 1:
The invention implements nesting by folding the tube body and inserting it into the fixed tube, with the folded tube body occupying the internal space of the fixed tube. This nested arrangement minimizes dead space and enables miniaturization of the overall device while maintaining a manageable assembly process through the self-fixing design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design minimizes dead space and weight, reduces assembly complexity, and ensures efficient liquid transfer, making the injector compact and cost-effective for continuous medication delivery.
Implementation Method 1
a balloon type liquid medicine injector 100 currently used includes a tube body 110 inflated when filled with a liquid medicine
Data Source
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AI summary
Disclosed is a balloon type liquid medicine injector for continuously inject a small amount of liquid medicine into a body of a patient so as to be easily assembled and prevent an unnecessary dead space while being inflated after a liquid medicine is injected, so as to be miniaturized. When a tube body is provided outside a fixed pipe, both ends of the tube body are folded and inserted into both ends of the fixed tube, to remove the dead space while being inserted inside the case. In addition, in a state where the both ends of the tube body are folded and inserted into the both ends of the fixed tube, an injection mechanism for injecting the liquid medicine or a stopper mechanism are coupled while pressing the tube body folded inward, so that a separate packing is unnecessary and the airtightness is maintained.