Drug Infusion Drive With Body-Motion Command Recognition

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Solution Overview

Problem

Existing drug infusion systems require manual input of functional instructions by users, which is cumbersome and worsens the user experience.

Innovation Solution

A unilaterally driven drug infusion system that senses and recognizes user body movements through a sensing unit, allowing the control unit to execute corresponding functional instructions without manual input, utilizing sensors such as acceleration, inclination, and vibration sensors to interpret movements like jumping, squatting, and arm movements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual input of functional instructions is required, then the system can execute precise functions, but the operation process becomes cumbersome and user experience deteriorates

Engineering Contradiction:
Improveinput processVSAvoidtime for functional instruction input
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system automatically detects body movements and executes corresponding functions without requiring manual input from the user. The sensing unit continuously monitors user movements and the control unit automatically translates them into functional instructions, making the system serve itself by eliminating the need for explicit user commands.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical input operations with automated sensing and recognition systems. Acceleration sensors, inclination sensors, and vibration sensors detect body movements, and the control unit processes these signals to determine user intent, substituting the manual input mechanism with an automated sensing-and-recognition system.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If body movement sensing is added to enable automatic function execution, then ease of operation improves, but device complexity increases

Engineering Contradiction:
Improvefunctional instruction inputVSAvoidsystem structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The sensing unit is designed to detect multiple types of body movements (acceleration, inclination, vibration) and the control unit is programmed to recognize various movement patterns and map them to different functions. This multi-functional design allows a single sensing unit to handle diverse input methods, reducing the need for separate specialized components for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines multiple sensing functions (acceleration sensing, inclination sensing, vibration sensing) into a single integrated sensing unit. The control unit merges the processing of different sensor signals and consolidates the decision-making logic for function execution, reducing overall system complexity through integration rather than separate independent systems.

Inventive Principle:
Principle #5Merging (Combining)

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

Simplifies the input process by using body movements as functional instructions, enhancing user experience and flexibility, while improving safety and accuracy through motion detection and verification, and allowing various infusion increments and rates.

Implementation Method 1

the sensing unit is provided with one or more of acceleration sensor, inclination sensor, vibration sensor and rotation sensor

Methodology Applied
Scientific EffectAcceleration sensing: Accelerometer

Implementation Method 2

the sensing unit is provided with one or more of acceleration sensor, inclination sensor, vibration sensor and rotation sensor

Methodology Applied
Scientific EffectInclination sensing: Inclined Plane

Implementation Method 3

the sensing unit is provided with one or more of acceleration sensor, inclination sensor, vibration sensor and rotation sensor

Methodology Applied
Scientific EffectVibration sensing: Vibration

Implementation Method 4

the driving member is configured to rotate around the rotating shaft to advance or reset the driving end

Methodology Applied
Scientific EffectMechanical rotation: Wheel and Axle

Implementation Method 5

the driving end which is advancing is configured to push the wheel teeth to rotate the driving wheel

Methodology Applied
Scientific EffectMechanical force transmission: Gear

Implementation Method 6

a piston and a screw, wherein the piston, connected with the screw, is arranged in the reservoir

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 7

the driving end which is advancing is configured to push the wheel teeth to rotate the driving wheel, thereby driving the screw forward

Methodology Applied
Scientific EffectMechanical advantage: Mechanical Advantage

Implementation Method 8

a linear actuator and a reset unit respectively connected to the driving member, wherein the linear actuator and the reset unit are configured to apply driving power to the driving member to advance and reset the driving end

Methodology Applied
Scientific EffectLinear actuation: Linear Motor

Implementation Method 9

a linear actuator and a reset unit respectively connected to the driving member, wherein the linear actuator and the reset unit are configured to apply driving power to the driving member to advance and reset the driving end

Methodology Applied
Scientific EffectReset mechanism: Spring

Data Source

PatentEP4255529B1Unilaterally driven drug infusion system
Publication Date: 2026.02.25 MEDTRUM TECH
  • EP4255529B1 patent drawingFigure 1a~1c
  • EP4255529B1 patent drawingFigure 1d~2a
  • EP4255529B1 patent drawingFigure 2b~4a

AI summary

A unilaterally driven drug infusion system, comprising: an infusion unit (102), including a reservoir (110), a piston (120) and a screw (130), the piston (120) is arranged in the reservoir (110); a driving unit including a rotating shaft (160) and a driving member (150), and the driving member (150) includes a driving end (151); a driving wheel (140) provided with wheel teeth (141); a linear actuator (180) and a reset unit (170) respectively connected to the driving member (150); a control unit (101) controls the linear actuator (180) or the reset unit (170) to apply different driving powers on the driving member (150); and a sensing unit (103) operatively connected to the control unit (101) and used to sense or recognize the user's body movements, and different body movements represent different functional instructions, and according to the body movements sensed or recognized by the sensing unit (103), the control unit (101) controls the infusion unit (102) to execute corresponding functional instructions, the user or the system can flexibly select the infusion mode, and the user has no need to manually input functional instructions.