Drug Infusion Drive Control With Position Feedback Dosing Modes
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Solution Overview
Problem
Existing drug infusion devices lack flexibility in infusion mode adjustment, leading to inflexible control and low infusion efficiency, causing fluctuations in fluid levels that are not accurately maintained.
Innovation Solution
The device incorporates a driving unit with multiple selectable rotation ranges and a position detecting area that interacts with a positioning part to trigger different position signals, allowing the device to have a variety of infusion options, including a driving apparatus and a drug infusion device, which includes a driving unit with multiple infusion modes with selectable rotation ranges and a position detecting area that interacts with a positioning part to trigger different position signals, enabling precise control of infusion rates and volumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the infusion increment is fixed in existing devices, then the device structure is simple, but the infusion control flexibility is poor
Solution Approach 1:
The driving unit is designed with adjustable rotation ranges, transforming from a fixed-structure mechanism to a dynamic one that can adapt to different infusion requirements. The driving unit can rotate within different angle ranges (e.g., 0-180 degrees, 0-360 degrees, or multiple 360-degree cycles) to achieve variable infusion increments, thereby improving infusion control flexibility without requiring multiple separate devices.
Solution Approach 2:
The patent changes the operational parameters of the driving unit, specifically the rotation angle and rotation cycles, to achieve different infusion increments. By controlling the driving unit to rotate different numbers of times and different angles, the system can deliver precise variable doses (e.g., 0.5ml, 1.0ml, 1.5ml per rotation), enabling flexible infusion control while maintaining a single unified device structure.
2Productivity
If the driving unit has fixed rotation range, then the device is easy to operate, but the infusion efficiency is low
Solution Approach 1:
The system incorporates a position detecting area that interacts with a positioning part on the driving unit to trigger position signals. This feedback mechanism automatically detects the rotation position and controls the driving unit to complete precise rotation cycles, eliminating the need for manual counting or monitoring by the operator. The feedback control enables the system to achieve variable infusion increments automatically, improving infusion efficiency without significantly increasing operational complexity.
3Stability of the object's composition
If the infusion rate is not precisely controlled, then the device is simple to manufacture, but the fluid level stability is poor
Solution Approach 1:
The system pre-configures the position detecting area with multiple detection points corresponding to different rotation positions. Before the driving unit completes a rotation cycle, the feedback mechanism has already detected the position and prepared the control signals, enabling the driving unit to automatically stop at precise positions. This preliminary action ensures that the infusion volume is accurately controlled from the outset, maintaining fluid level stability without requiring complex real-time adjustment mechanisms.
Data Source
Figure 1~2b
Figure 3~4a
Figure 4b~4c
AI summary
Disclosed is a drug infusion device comprising: a drug storage unit (190); a piston (191) disposed in the storage unit (190), a driving rod (192) connected to the piston (191); a driving unit (100), the driving unit (100) comprises a driving part (110) and a positioning part (120), the driving unit (100) drives the driving part (110) and the positioning part (120) to move; position detecting area (180), the positioning part (120) interacts with the position detecting area (180) at different positions to trigger different position signals; a power unit (160), the power unit (160) applies a force to move the driving unit (100); and a control unit, the control unit is connected to the position detecting area (180) to receive the position signal, according to the position signal, the control unit controls the direction of the force applied by the power unit (160) to move the driving unit (100) and form optional infusion modes. Multiple infusion modes increase the infusion flexibility and efficiency of the drug infusion device.