Unilateral Infusion Drive With Blocking Walls for Precise Dosing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drug infusion devices have low infusion accuracy, limited to minimal infusion increments determined by the driving wheel, and lack flexibility in infusion modes to meet the body's actual requirements.
Innovation Solution
A unilaterally driven drug infusion device with at least two blocking walls and a driving member that can precisely control rotation amplitude, allowing for various infusion modes and increments through a combination of elastic and electrically driven components, including a driving wheel with wheel teeth and a reset unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the driving wheel advances by a fixed increment to push the screw forward, then the device structure is simple, but the infusion accuracy is limited to the minimal infusion increment
Solution Approach 1:
The driving member is divided into multiple driving ends (first driving end and second driving end), each capable of independently pushing the driving wheel. This segmentation allows the system to achieve multiple infusion increments (0.5 unit, 1 unit, 1.5 units, 2 units) from a single reciprocating motion, thereby improving infusion accuracy without proportionally increasing device complexity
Solution Approach 2:
The driving member transitions from a static single-position structure to a dynamic multi-position structure that can rotate to different angles (0°, 90°, 180°, 270°) to engage different driving ends with the driving wheel. This dynamic adjustment enables flexible selection of infusion increments while maintaining a relatively simple overall device structure
2Adaptability or versatility
If the driving member rotates to multiple positions to engage different driving ends, then various infusion modes are achieved, but the control complexity increases
Solution Approach 1:
The driving member is designed to automatically rotate to the correct position and engage the appropriate driving end based on the infusion requirements, without requiring complex external control mechanisms. The system self-adjusts to provide different infusion increments (0.5, 1, 1.5, 2 units) through its own rotational capability, thereby achieving high adaptability with minimal control complexity
Solution Approach 2:
A single driving member structure serves multiple functions by engaging different driving ends at different positions. The same driving member can provide four different infusion increments by rotating to four different positions, eliminating the need for four separate driving mechanisms and simplifying the overall control system
3Measurement precision
If the driving member rotates amplitude is precisely controlled using blocking walls, then infusion accuracy is improved, but the device complexity increases
Solution Approach 1:
The blocking walls are designed as simple, disposable structural elements that define the rotation amplitude of the driving member. Rather than using complex adjustable or programmable control mechanisms, the patent uses fixed blocking walls that are easy to manufacture and integrate, achieving precise rotation control (90° intervals) without adding significant device complexity
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
Enhances infusion accuracy and flexibility, enabling users or closed-loop systems to choose appropriate infusion modes, reducing power consumption, and ensuring safe and precise drug delivery.
Implementation Method 1
the reset unit is an elastic conductive member, the elastic conductive member at least includes one or a combination of a spring, an elastic piece, an elastic plate, an elastic rod, rubber and other elastic members
Implementation Method 2
the linear actuator includes an electrically driven linear actuator or an electrically heated linear actuator
Implementation Method 3
the linear actuator includes an electrically driven linear actuator or an electrically heated linear actuator
Data Source
AI summary
A unilaterally driven drug infusion device includes: a reservoir, a piston and a screw, the piston connected with the screw and arranged in the reservoir; a driving unit including rotating shaft and driving member, and the driving member including driving end; driving wheel provided with wheel teeth; a linear actuator and a reset unit respectively connected to the driving member; and at least two blocking walls, arranged at one side of the driving unit to limit the advancing position of the driving unit. The infusion device is able to precisely control the rotation amplitude of the driving member and improve the infusion accuracy of the infusion device. The user or the closed-loop system is able to flexibly select different infusion modes to precisely control the body fluid level to meet the needs of the body, improving user experience.