Injection Pen Indicator Sleeve for Site Rotation Tracking
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Solution Overview
Problem
Patients often fail to adhere to injection site rotation plans, leading to lipodystrophy and erratic medicament absorption, due to ergonomic challenges, fear of pain, and lack of reminders or encouragement, which can result in suboptimal distribution of injection sites and failure to detect and avoid lipodystrophic sites.
Innovation Solution
The development of various devices and systems, including improved injection pens, medicament containers, infusion pump sets, and mobile apps, that provide reminders and tracking mechanisms to help patients adhere to injection site rotation plans, distribute injections effectively within body areas, and avoid lipodystrophic sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If patients follow injection site rotation plans, then lipodystrophy is reduced and medicament absorption is improved, but patient compliance and ease of operation deteriorate due to ergonomic challenges and fear of pain
Solution Approach 1:
The system provides visual feedback through color-coded indicators that change based on injection site usage history. The indicator sleeve displays different colors to show which body areas have been recently injected, giving patients immediate visual feedback to guide their next injection location and ensure proper site rotation without requiring complex tracking or calculation
Solution Approach 2:
The indicator sleeve is designed to be automatically advanced by the patient through simple manual rotation after each injection. The system serves itself by using the injection action itself (depression of the injection button) to trigger the advancement mechanism, reducing the cognitive load and effort required from patients while maintaining compliance
2Object-affected harmful factors
If injection sites are distributed across multiple body areas, then lipodystrophy is prevented, but device complexity increases due to tracking mechanisms
Solution Approach 1:
The system divides the body into discrete, color-coded zones (e.g., abdomen, thigh, buttock) represented on the indicator sleeve. Each zone is segmented into multiple injection sites, and the system tracks usage at this segmented level rather than requiring continuous coordinate tracking, simplifying the overall system while effectively distributing injections across body areas
Solution Approach 2:
The indicator sleeve uses simple, inexpensive visual indicators (colors, patterns) that can be easily manufactured and integrated into disposable injection devices. The tracking information is ephemeral, resetting with each new indicator sleeve or device, which eliminates the need for complex memory or power systems while still achieving the lipodystrophy prevention goal
Data Source
AI summary
Systems and methods encourage users to rotate injection sites and avoid lipodystrophy. Sleeves and/or lost-tooth gear dials and/or microswitches in or on injection pens or their caps, on vials, and on other portable devices manually adjust an indicator before or after an injection to show a current or next injection site in accordance with a site rotation plan. Injected medicine packaging and related printed indicia encourage site rotation. Optical devices employing optical mouse or projection technology help locate and/or distribute injection sites within a body area. A mobile phone app tracks injections and locations to select next injection site, and can use imaging to locate a target injection site and optionally diagnose lipodystrophic conditions and record them. Tactile and print media educational tools are presented to help users palpate and identify lipos in body areas having injection sites.