Portable Medical Device Docking Unit Program Security
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Solution Overview
Problem
Portable medical devices often lack secure programming mechanisms, allowing unauthorized users to change or deselect treatment programs, which can compromise patient care and device operation.
Innovation Solution
A portable medical device system featuring a controller that executes multiple programs, with a docking unit providing an operator interface for selecting programs and using light sensors or electromagnetic sources to communicate with the controller, ensuring that once a program is selected, it cannot be changed without remounting the device on the docking unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the medical device includes a removable portable unit with a controller that can execute multiple programs, then the device provides flexibility and adaptability for different treatment scenarios, but the patient or unauthorized persons can deselect the selected program or select another program during use, compromising treatment integrity
Solution Approach 1:
The system is divided into a stationary docking unit and a removable portable medical device unit. The docking unit houses the operator interface and program selection controls, while the portable unit contains the controller that executes programs. This segmentation separates program selection authority from program execution, preventing unauthorized changes during treatment.
Solution Approach 2:
The docking unit acts as an intermediary between the user and the portable medical device controller. All program selections must be made through the docking unit's operator interface, which communicates the selected program to the controller. This intermediary layer prevents direct access to program selection during treatment, ensuring treatment integrity while maintaining flexibility.
2Ease of operation
If the device allows program selection during use, then the device is easy to operate and adapt to changing conditions, but unauthorized changes can compromise patient safety and device operation
Solution Approach 1:
The system separates the operator interface (docking unit) from the execution controller (portable unit). This segmentation ensures that only authorized users with access to the docking unit can change programs, while the portable unit simply executes received instructions. Treatment safety is maintained while preserving ease of operation for authorized users.
Solution Approach 2:
The docking unit serves as an intermediary that mediates all program selection requests. It validates and controls program changes, communicating only authorized program selections to the portable controller. This intermediary function prevents unauthorized changes while maintaining ease of operation for legitimate users.
3Weight of moving object
If the medical device is made portable and lightweight, then the patient gains freedom of movement and can perform daily activities, but the device may lack secure programming mechanisms to prevent unauthorized changes
Solution Approach 1:
The system segments functionality between a lightweight portable execution unit and a stationary docking unit that houses security-critical components including the operator interface. This allows the portable unit to remain lightweight and mobile while the docking unit provides secure program management, resolving the contradiction between portability and programming security.
Solution Approach 2:
The docking unit acts as a secure intermediary that the portable device communicates with for all program selections. The portable unit lacks independent program selection capability, relying on the docking unit's secure interface. This intermediary architecture enables portability while maintaining programming security through centralized control.
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
This solution ensures that medical devices operate according to the intended program, enhancing patient safety and device security by preventing unauthorized changes to treatment settings during use.
Implementation Method 1
The docking unit includes a plurality of distinct light sources for generating light signals corresponding to the program selected at the operator interface
Implementation Method 2
The medical device includes a plurality of light sensors for detecting the light signals generated by the light sources when the medical device is mounted on the docking unit
Data Source
AI summary
A medical device system includes a portable medical device and a docking unit on which the medical device can be removably mounted. The docking unit is configured to communicate with a controller of the medical device when the medical device is mounted on the docking unit to instruct the controller to execute a selected program.