Infusion Pump Drive Mechanism for Selectable Multi-Mode Dosing
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Solution Overview
Problem
Existing drug infusion devices lack flexibility in infusion modes, limiting user experience due to a single infusion rate or increment.
Innovation Solution
A unilaterally driven drug infusion device with multiple infusion modes, featuring a driving member that can rotate in various operating modes, controlled by a control unit to adjust infusion rates and increments, utilizing electrically driven actuators and elastic members for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single infusion mode is used in the drug infusion device, then the device structure is simple, but the user experience deteriorates due to inability to flexibly select infusion rates or increments
Solution Approach 1:
The patent implements multiple infusion modes (continuous infusion, bolus infusion, and intermittent infusion) that allow the device to dynamically adapt to different user needs. The control unit can switch between these modes based on medical requirements, transforming a static single-mode device into a dynamic multi-mode system without significantly increasing structural complexity
Solution Approach 2:
The infusion device is designed to perform multiple infusion functions through a unified structure. The same pump mechanism and control system handle continuous infusion, bolus infusion, and intermittent infusion, making the device universal and avoiding the need for separate specialized devices for each infusion type
2Ease of operation
If multiple infusion modes are added to provide flexible infusion rates and increments, then user experience improves, but the device complexity increases
Solution Approach 1:
The control unit monitors infusion parameters and automatically adjusts infusion rates and increments based on preset programs and real-time feedback. This automated feedback control simplifies operation for users while managing the complexity of multiple infusion modes through intelligent control algorithms rather than complex mechanical adjustments
Solution Approach 2:
The device incorporates preset infusion programs that automatically configure infusion parameters based on selected modes. The system self-adjusts infusion rates, increments, and timing without requiring manual calculation or complex user input, making the device easier to operate while the control software manages the underlying 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
Enables users to select appropriate infusion modes based on body requirements, improving user experience and ensuring accurate fluid control with reduced power consumption and enhanced safety.
Implementation Method 1
a linear actuator and a reset unit respectively connected to the driving member, the linear actuator and the reset unit respectively apply driving power to the driving member to advance and reset the driving end
Implementation Method 2
the reset unit includes an electrically driven linear actuator, an electrically heated linear actuator or an elastic member
Data Source
Figure 1a~2
Figure 3a~3c
Figure 4a~4c
AI summary
A unilaterally driven drug infusion device with multiple infusion modes, comprising: a reservoir (110), a piston (120) and a screw (130, 230, 330), the piston (120) is arranged in the reservoir (110); a driving unit including rotating shaft (160, 260, 360a, 360b, 460, 560) and driving member (150, 250a, 250b, 350a, 350b, 450, 550), and the driving member (150, 250a, 250b, 350a, 350b, 450, 550) includes driving end (151, 251a, 251b, 351a, 351b, 451a, 451b, 551a, 551b); driving wheel (140, 240, 340, 440a, 440b, 540) provided with wheel teeth (141, 241, 341, 441a, 441b, 541); a linear actuator (180, 280a, 280b, 380a, 380b, 480, 580) and a reset unit (170, 270a, 270b, 370a, 370b, 470, 570) respectively connected to the driving member (150, 250a, 250b, 350a, 350b, 450, 550); and a control unit (101) controls the linear actuator (180, 280a, 280b, 380a, 380b, 480, 580) or the reset unit (170, 270a, 270b, 370a, 370b, 470, 570) to apply different driving powers on the driving member (150, 250a, 250b, 350a, 350b, 450, 550) to make the driving member (150, 250a, 250b, 350a, 350b, 450, 550) have a variety of different operating modes. The user or the system can flexibly select the infusion mode, which enhances the user experience.