Sensor-Guided Pill Dispensing Chamber for Tamper-Resistant Dosing
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Solution Overview
Problem
Existing pill dispensing devices fail to reliably dispense the correct dose, are susceptible to tampering, and lack robustness in monitoring adherence, leading to variable patient adherence and potential safety issues.
Innovation Solution
A pill dispenser mechanism with sensors to detect pill presence, orientation, and position, combined with a drive mechanism and control unit to ensure accurate dispensing and prevent tampering, using a chamber that moves between loading and dispensing positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If smart packaging is used to record dispensing events, then adherence monitoring is enabled, but the system becomes susceptible to tampering and false dispensing event recording
Solution Approach 1:
The chamber acts as an intermediary between the product container and the dispensing mechanism. It provides a controlled environment where pills are temporarily held during the dispensing process, isolating the product from direct user access while enabling monitored dispensing events. The chamber's movement between positions (inside container, at dispensing location, outside container) creates a secure transition zone that prevents tampering.
Solution Approach 2:
The system uses sensors to detect the chamber's position and the dispensing event, providing feedback to the control unit. This feedback mechanism ensures that dispensing events are accurately recorded only when the chamber moves to the correct position and actually dispenses a pill, preventing false recording from tampering attempts.
2Reliability
If a simple container is used for pill storage, then ease of use is maintained, but reliable dispensing and adherence monitoring cannot be achieved
Solution Approach 1:
The chamber serves multiple functions: it stores pills, moves between different positions (inside container, at dispensing location, outside container), blocks access during storage, and enables monitored dispensing. This multi-functionality reduces the need for separate components, maintaining relative simplicity while achieving reliable dispensing and monitoring capabilities.
Solution Approach 2:
The chamber transitions between different static positions (inside container, at dispensing location, outside container) rather than remaining stationary. This dynamic positioning enables the system to provide different functions at different times: secure storage when inside the container, controlled dispensing when at the dispensing location, and safe ejection when outside the container.
3Ease of operation
If the chamber is always accessible for pill insertion, then ease of operation is improved, but tampering and incorrect dose dispensing increase
Solution Approach 1:
The system segments the chamber's accessibility into different phases: during storage the chamber is inside the sealed container and inaccessible; during dispensing it moves to the dispensing location where controlled access occurs; after dispensing it moves outside the container. This temporal and spatial segmentation ensures pills can be added during loading but cannot be accessed or tampered with during storage and dispensing.
Solution Approach 2:
Pills are loaded into the chamber during a controlled loading phase before the dispensing phase begins. Once loaded, the chamber moves to positions where pill insertion is prevented, ensuring that the dispensing process operates on a fixed, predetermined set of pills, thereby preventing tampering during the critical dispensing period.
Data Source
AI summary
A pill dispenser mechanism for a pill dispenser assembly includes: a chamber; a product sensor configured to sense the presence or absence of the pill in the chamber; a drive mechanism operable to cause movement of the chamber; and a control unit configured to control the drive mechanism based on the output of the product sensor. Also provided is a pill dispenser assembly comprising the pill dispenser mechanism, wherein the control unit is configured to control the drive mechanism to cause movement of the chamber between: a first loading position wherein the chamber is in communication with a product entry passage but out of communication with a product exit passage; and a second dispensing position wherein the chamber is out of communication with the product entry passage but in communication with the product exit passage.