Syringe Stopper Rod Sensor for Dose Recording

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Solution Overview

Problem

Patient compliance with medication dosage regimens remains a challenge, particularly for self-administered medications, due to issues such as incorrect dosing, missed administration times, and inadequate recording of medication administration.

Innovation Solution

A drug delivery system featuring a syringe stopper rod with a sensor component that includes a wireless transmitter module, activated upon completion of a delivery stroke, to transmit a drug dose completion signal to a data management component, facilitating accurate recording of medication administration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a sensor component with wireless transmitter is integrated into the syringe stopper rod, then accurate recording of medication administration is achieved, but device complexity increases

Engineering Contradiction:
Improverecording accuracyVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The sensor component and wireless transmitter module are integrated within the syringe stopper rod structure, nesting monitoring functions inside the existing delivery mechanism. This allows accurate recording of medication administration without requiring a separate external monitoring device, thus improving measurement precision while controlling device complexity through integrated design.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The syringe stopper rod serves multiple functions: it delivers the medication mechanically and simultaneously acts as a sensor platform that detects delivery completion and transmits data wirelessly. This multi-functionality consolidates what would otherwise be separate components into a single integrated unit, achieving accurate recording while minimizing the increase in overall device complexity.

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

2Reliability

If automated detection and transmission of dose completion is implemented, then patient adherence monitoring is improved, but manufacturing complexity increases

Engineering Contradiction:
Improveadherence monitoringVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The sensor component is pre-integrated into the syringe stopper rod during manufacturing, with the wireless transmitter and activation mechanism prepared in advance. This preliminary integration ensures that when the syringe is assembled and used, the automated detection and transmission of dose completion occurs reliably without requiring complex post-assembly calibration or setup, thus improving adherence monitoring while managing manufacturing complexity through advance preparation.

Inventive Principle:
Principle #10Preliminary action

3Loss of information

If a wireless transmitter module is added to the sensor component, then data transmission capability is enhanced, but device complexity increases

Engineering Contradiction:
Improvedata transmissionVSAvoiddevice complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The wireless transmitter module is extracted as a distinct functional unit within the sensor component, allowing it to be optimized and miniaturized independently. This extraction enables effective data transmission capability while managing the complexity increase by isolating the wireless communication function into a manageable module rather than dispersing it throughout the entire device structure.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS12318591B2Injection monitoring device
Publication Date: 2025.06.03 GENENTECH INC
  • US12318591B2 patent drawing
  • US12318591B2 patent drawing
  • US12318591B2 patent drawing

AI summary

Drug delivery systems, devices and methods of use for recording a drug dose completion signal in a data management system are provided. Aspects of the invention include drug delivery systems comprising a syringe stopper rod that comprises a sensor component comprising a wireless transmitter module and an activation component configured to activate the sensor component when the syringe stopper rod has completed a delivery stroke, wherein the wireless transmitter module is configured to transmit a report comprising a drug dose completion signal when the sensor component is activated.