Skin Patch Infusion Control Using Body Movement Recognition

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Solution Overview

Problem

Existing drug infusion systems require cumbersome manual input of functional instructions, worsening the user experience for diabetic patients.

Innovation Solution

A skin patch drug infusion system that uses a sensing module to recognize user body movements as functional instructions, with integrated motion sensors like acceleration, inclination, and vibration sensors, allowing direct control of infusion mechanisms without manual input.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual input method is used for functional instructions, then the system can receive user commands, but the operation process becomes cumbersome and user experience deteriorates

Engineering Contradiction:
Improveinput processVSAvoidtime for finding input position and manual inputting
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the mechanical manual input system (buttons, keyboards, or touchscreen operations) with a motion recognition system that uses sensors to detect and interpret user body movements. The sensing module captures motion data, the processing module interprets these movements as functional instructions, and the system executes corresponding operations without requiring manual device interaction. This substitution eliminates the need for users to physically locate and operate input controls, directly resolving the contradiction between system functionality and ease of operation.

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

2Ease of operation

If body movement recognition is implemented, then ease of operation improves, but device complexity increases due to additional sensing and processing modules

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

Solution Approach 1:

The patent implements a multi-functional sensing module that serves dual purposes: it detects user body movements for command input while also potentially monitoring physiological parameters relevant to diabetes management. The processing module is designed to interpret various types of movements (tapping, waving, pointing) as different functional instructions, making the system capable of multiple operations through a single integrated component rather than requiring separate specialized devices for each function.

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

3Adaptability or versatility

If multiple body movement types are recognized, then system versatility improves, but measurement precision requirements increase to accurately distinguish between different movements

Engineering Contradiction:
Improvefunctional instruction typesVSAvoidmovement detection accuracy
Core Design Contradiction:
Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent incorporates a feedback mechanism where the system provides visual, auditory, or haptic confirmation to the user that their body movement has been correctly recognized and interpreted as the intended functional instruction. This feedback loop allows users to verify that their movement was accurately detected, and if not, to adjust their movement or receive guidance. The processing module can also provide feedback about the confidence level of movement recognition, enabling the system to request clarification or adjust its interpretation threshold based on the clarity of the detected movement.

Inventive Principle:
Principle #23Feedback

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 commands, improving user experience and system flexibility, while enhancing safety and accuracy through motion verification and reliable electrical connections.

Implementation Method 1

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

Methodology Applied
Scientific EffectAcceleration sensor detection: Accelerometer

Implementation Method 2

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

Methodology Applied
Scientific EffectVibration detection: Vibration

Data Source

PatentEP4255551B1Skin patch drug infusion system
Publication Date: 2026.04.01 MEDTRUM TECH
  • EP4255551B1 patent drawingFigure 1a~1d
  • EP4255551B1 patent drawingFigure 1e~2b
  • EP4255551B1 patent drawingFigure 3a~3c

AI summary

A skin patch drug infusion system, comprises: an infusion mechanism module (110), comprising: a reservoir (131), for accommodating a drug to be infused, and provided with a drug inlet and a drug outlet; an infusion needle (1211), wherein one end of the infusion needle (1211) is communicated with a drug outlet of the reservoir (131), and the other end of the infusion needle (1211) is delivered subcutaneously to realize drug infusion; a control mechanism module (100), connected with the infusion mechanism module (110) to control the drug infusion; a sensing module (120), operatively connected to the control mechanism module (100) and used to sense or recognize the user's body movements, and different body movements represent different functional instructions, and according to the body movement sensed or recognized by the sensing module (120), the control mechanism module (100) controls the infusion mechanism module (110) to execute corresponding functional instructions; and an adhesive patch (150), for attaching the infusion mechanism module (110), the control mechanism module (100) and the sensing module (120), in part or in whole, to the skin surface, and according to the body movement sensed or recognized by the sensing module (120), the control mechanism module (100) controls the infusion mechanism module (110) 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, improving the user experience.