Sequential Injection Apparatus with Deformable Fluid Tank
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid medicine injection apparatuses face challenges in efficiently administering multiple types of medicines sequentially and in effectively removing residual medicines, leading to potential environmental issues and inconvenience in chemotherapy treatments.
Innovation Solution
A liquid medicine injection apparatus designed to inject a second medicine or flushing fluid after the first is administered, using a cylinder, piston, fluid tank, and needle unit, where the fluid tank is deformable and penetrable to ensure sequential injection and removal of residual medicines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single liquid medicine injection apparatus is used, then device complexity is reduced, but the ability to sequentially administer multiple medicines and perform flushing is insufficient
Solution Approach 1:
The injection apparatus is divided into separate functional modules: a first liquid medicine storage chamber, a second liquid medicine storage chamber, and a flushing fluid storage chamber. Each chamber can be independently filled and controlled, allowing sequential administration of different medicines and flushing fluids without complex integration
Solution Approach 2:
The apparatus is designed to perform multiple functions using a single device structure: it can inject first liquid medicine, then second liquid medicine, and finally perform flushing with saline solution. The shared injection mechanism and control system enable one apparatus to replace multiple separate devices
2Adaptability or versatility
If the apparatus is designed to inject additional fluid after liquid medicine injection, then flushing capability is improved, but device complexity increases
Solution Approach 1:
The flushing fluid storage chamber is merged with the liquid medicine storage system, sharing the same injection mechanism, control valve, and delivery tube. This integration allows flushing functionality to be added without requiring a separate flushing device, minimizing structural complexity while enhancing versatility
3Object-affected harmful factors
If residual liquid medicine is not removed, then environmental problems occur and illegal distribution may happen, but adding flushing function increases device complexity
Solution Approach 1:
The apparatus performs flushing immediately after liquid medicine injection without interruption or manual intervention. The control system automatically activates the flushing fluid delivery after detecting completion of medicine injection, ensuring continuous operation and complete removal of residual medicines from the delivery system
Solution Approach 2:
The apparatus automatically performs the flushing operation without requiring external intervention. The control mechanism detects when liquid medicine injection is complete and autonomously activates the flushing fluid delivery system to clean the tubes and chambers, making the system self-sufficient in eliminating residual medicines
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
Enables sequential administration of multiple medicines in a single apparatus, effectively removing residual medicines, thereby enhancing treatment efficacy and preventing environmental and distribution issues.
Implementation Method 1
a piston installed to be hermetically movable within the cylinder in the direction, wherein the piston defines a liquid medicine storage space to be filled with the liquid medicine introduced through the nozzle
Implementation Method 2
a fluid tank for storing a fluid in a sealed state, wherein the fluid tank is disposed in the cylinder so as to be movable together with the piston and is deformable by a pressure
Data Source
AI summary
A liquid medicine injection apparatus capable of injecting an additional fluid after completion of injection of a liquid medicine is provided. The apparatus includes a cylinder elongated in a direction and having a nozzle formed at one end of the cylinder; a piston installed to be hermetically movable within the cylinder in the direction; an injector provided at the other end of the cylinder to allow the piston to be moved; a fluid tank for storing a fluid in a sealed state; a needle unit disposed between the nozzle and the fluid tank; and a cap member provided between the needle unit and the fluid tank and deformable to allow the needle unit to penetrate the fluid tank.