Smart Drug Injection Device Automation

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Solution Overview

Problem

Current drug injection devices require continuous human intervention, leading to understaffing issues in hospitals, potential delays in treatment, and inaccuracies in drug dosage, which can result in adverse effects for patients.

Innovation Solution

A smart drug injection device with a main body, circuit board, display, and transmission mechanism that allows for automatic injections at set intervals, eliminating the need for constant human supervision and ensuring accurate dosages through a motor-driven syringe system and user input for dosage settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual injection by medical staff is used, then injection accuracy can be controlled, but nursing staff must stand by patients for long periods and may forget to administer injections at specific intervals

Engineering Contradiction:
Improveinjection timing reliabilityVSAvoidnursing staff time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The injection device performs self-service by automatically administering injections at predetermined intervals without requiring continuous human supervision. The control unit stores injection timing information and automatically executes injections based on elapsed time, freeing nursing staff from constant patient monitoring while ensuring reliable injection timing.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces the manual mechanical operation of injection with an automated system combining electronic control units, timing mechanisms, and motor-driven syringe propulsion. The control unit calculates elapsed time and triggers injection automatically, substituting human judgment and timing with electronic automation.

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

2Productivity

If multiple dosages are administered at once to save time, then treatment time is reduced, but treatment effectiveness decreases due to drug absorption over time

Engineering Contradiction:
Improvetreatment speedVSAvoidtreatment effectiveness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The device implements periodic action by administering injections at regular, predetermined intervals rather than all at once. The control unit stores multiple injection timing points and automatically executes them in sequence, maintaining consistent drug delivery frequency that matches therapeutic requirements while improving overall treatment efficiency.

Inventive Principle:
Principle #19Periodic action

3Measurement precision

If manual dosage measurement is used, then device complexity is low, but dosage accuracy is poor leading to potential harm to patients

Engineering Contradiction:
Improvedosage accuracyVSAvoiddevice structure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual dosage measurement with an automated motor-driven system. A motor propels the syringe plunger at controlled speeds over precise distances, with the control unit calculating and executing exact propulsion parameters based on prescribed dosages. This electronic-mechanical substitution eliminates manual measurement errors while maintaining manageable device complexity through integrated control.

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

4Ease of operation

If automatic injection devices are implemented, then nursing staff burden is reduced, but device portability and size become concerns

Engineering Contradiction:
Improvedevice portabilityVSAvoidinjection automation level
Core Design Contradiction:
Ease of operationVSExtent of automation

Solution Approach 1:

The device applies nesting by integrating the motor, control unit, timing mechanism, and syringe propulsion system into a compact, hierarchical structure. Components are nested within each other - the control unit houses the timing mechanism, which controls the motor, which drives the syringe. This nested arrangement achieves high automation while maintaining small overall device size for portability.

Inventive Principle:
Principle #7Nested doll (Nesting)

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

The device automates injections, reducing the burden on nursing staff, preventing missed doses, and ensuring precise drug delivery, thereby improving patient treatment efficiency and safety while being compact and portable.

Implementation Method 1

The transmission mechanism is disposed in the accommodating space, and comprises a motor, a screw rod, a propelling block and a movable clamp. The motor is electrically connected to the control unit. One output end of the motor is connected with the screw rod.

Methodology Applied
Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

One output end of the motor is connected with the screw rod. The propelling block is movably disposed on the screw rod.

Methodology Applied
Scientific EffectScrew mechanism: Screw

Data Source

PatentUS11497855B2Smart drug injection device
Publication Date: 2022.11.15 AINOS INC
  • US11497855B2 patent drawing
  • US11497855B2 patent drawing
  • US11497855B2 patent drawing

AI summary

A smart drug injection device is disclosed, comprising a main body, a circuit board, a display, a syringe and a transmission mechanism; the main body comprises an accommodating space and a power button; the circuit board comprises a control unit and a storage unit; the transmission mechanism comprises a motor, a screw rod, a propelling block and a movable clamp, with the control unit electrically connected to the storage unit, the power button, the motor and the display, the motor connected to the screw rod, the propelling block movably arranged on the screw rod, the movable clamp disposed at one end of the propelling block and movable between two positions; the syringe is on one side of the main body and comprises a cylinder and a needle holder, one end of the cylinder has a needle and the other end is assembled with the needle holder.