Sensor System for Drug Delivery Device Tampering Prevention
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Solution Overview
Problem
Drug delivery devices lack effective mechanisms to render drugs ineffective to prevent improper release or tampering, posing risks to public safety and security.
Innovation Solution
A sensor system integrated with a deactivation unit that detects environmental and user-specific characteristics to render drugs ineffective by preventing transport or neutralizing them within the device, using sensors to monitor drug levels, environmental conditions, and user interactions to trigger deactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drug delivery devices store drugs without deactivation mechanisms, then drug availability is maintained, but public safety and security are compromised due to risks of improper release or tampering
Solution Approach 1:
The patent applies preliminary action by incorporating a deactivation mechanism that is pre-configured to render the drug ineffective under specific conditions (tampering, improper storage, or unauthorized access). The sensor system and deactivation unit are prepared in advance to detect adverse conditions and trigger deactivation before improper release can occur, thus enhancing public safety without requiring complex real-time intervention systems.
Solution Approach 2:
The patent uses an intermediary approach by introducing a sensor system as a mediator between the drug storage system and the deactivation mechanism. The sensor detects environmental conditions (temperature, humidity, tampering) and intermediates the decision-making process by triggering deactivation only when predetermined conditions are met, rather than requiring direct human intervention or complex control systems.
2Reliability
If sensor systems are integrated to detect environmental conditions and user interactions, then drug release control is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a multi-functional sensor system that simultaneously monitors multiple parameters (temperature, humidity, tampering, user presence) using integrated sensors. This allows the device to perform various detection functions through a unified system rather than requiring separate dedicated sensors for each parameter, thereby improving drug release control while minimizing the increase in device complexity.
Solution Approach 2:
The patent merges the sensor system, processing unit, and deactivation mechanism into an integrated control system. The sensor unit, processor, and deactivation unit are combined to form a cohesive system where the processor evaluates sensor inputs and controls the deactivation unit, reducing the number of separate components and simplifying the overall device architecture while maintaining reliable drug release control.
3Reliability
If deactivation mechanisms are implemented to render drugs ineffective, then safety against improper release is enhanced, but ease of operation may be reduced
Solution Approach 1:
The patent applies self-service by designing an automatic deactivation system that operates autonomously based on sensor inputs. The system automatically detects tampering or improper conditions and triggers deactivation without requiring user intervention or decision-making. This ensures safety while maintaining ease of operation, as users simply need to use the device normally without worrying about safety protocols.
Data Source
AI summary
A system for use with a drug delivery device includes a sensor unit and a deactivation unit operatively coupled to an output of the sensor unit and to a drug-retaining region of the drug delivery device, wherein the drug-retaining region contains a drug. The sensor unit is configured to detect a characteristic of a local environment and generate an output corresponding to a value of the detected characteristic. The deactivation unit is configured to render the drug ineffective when the output of the sensor unit satisfies a predetermined condition.