Tamper Resistant Catheter Locking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing number of IV drug abusers poses a risk of unauthorized access and misuse of peripherally inserted central catheter (PICC) lines, leading to potential illegal drug overdoses and deaths, as existing locking mechanisms are either ineffective or inconvenient for patients.
Innovation Solution
A tamper-resistant catheter device with a line retainer component, a hinged line clamp, and a locking mechanism featuring a threaded locking cap and slotted retaining sleeve, which can be secured to the patient's skin using an adhesive pad, preventing unauthorized access while allowing authorized medical administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is added to prevent unauthorized access to PICC lines, then patient safety is improved, but device complexity increases
Solution Approach 1:
The locking device is divided into separate functional components: a clamp assembly for securing the catheter, a locking mechanism with threaded engagement, and an adhesive mounting system. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The locking mechanism features nested components where the locking element is contained within the clamp assembly, and the entire assembly is mounted on an adhesive base. This nested structure consolidates multiple functions into a compact unit, improving safety while controlling device complexity.
2Reliability
If a locking mechanism is added to prevent unauthorized access to PICC lines, then patient safety is improved, but ease of operation deteriorates
Solution Approach 1:
The locking and unlocking functions are extracted as distinct, simple operations. The locking mechanism uses a straightforward threaded engagement that can be easily manipulated, while the clamp assembly can be independently opened and closed. This extraction of functions into simple, separate actions maintains ease of operation while ensuring safety.
Solution Approach 2:
The adhesive mounting system provides self-service by automatically securing the device to the patient's skin without requiring additional fasteners or complex attachment procedures. This simplifies the overall operation while maintaining the safety provided by the locking mechanism.
3Object-affected harmful factors
If a locking mechanism is added to prevent unauthorized access to PICC lines, then unauthorized access prevention is improved, but device complexity increases
Solution Approach 1:
The clamp assembly is designed to pre-clamp the catheter line in a secure position, creating preliminary resistance against unauthorized access. The locking mechanism then reinforces this preliminary action with threaded engagement, providing layered protection without requiring overly complex systems.
Solution Approach 2:
The adhesive mounting system performs preliminary action by securing the entire locking assembly to the patient's skin before the locking mechanism is engaged. This preliminary fixation prevents tampering with the mounting itself, allowing the locking mechanism to focus on securing the catheter line without needing additional anti-tamper features.
Data Source
AI summary
A tamper resistant catheter device preventing unauthorized access, while permitting authorized intravenous medications through an inlet port. The device comprises a catheter line retainer having a base supporting the catheter line, a lumen adaptor engaged with the catheter line, and a locking clamp for clamping the catheter line within the catheter line retainer. An installation tool is provided having a breakaway handle and a locking cap for covering the lumen adaptor. Finally, a slotted retaining sleeve is installed using the breakaway handle of the installation tool for engagement with the locking cap and around the lumen adaptor. The slotted retaining sleeve engages the locking clamp to block removal of the locking clamp from the line retainer. Once the slotted retaining sleeve and locking cap are installed, the breakaway handle is removed. A removal tool disengages the locking cap from the slotted retaining sleeve for authorized access.