On-Body Injector Adhesive Tabs for Secure Wear and Easy Removal
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Solution Overview
Problem
Existing wearable drug delivery devices face challenges in ensuring proper and comfortable application and removal on the patient's skin, particularly due to the complexity of adhesive layers, which can be difficult to apply and remove without damaging the device or causing discomfort.
Innovation Solution
The development of various adhesive applicator configurations for on-body injectors, including side grips, tabs, pull rings, and pull chords, that facilitate easy application and removal by allowing users to grasp the device securely and peel off the adhesive layers with minimal effort and discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an adhesive layer is used to secure the injector to the patient's skin during drug delivery, then the injector remains properly positioned and secure, but the adhesive layer becomes difficult to remove without damaging the device or causing patient discomfort
Solution Approach 1:
The adhesive applicator is divided into distinct functional segments: a removable adhesive layer for secure attachment during delivery, and a separate pull tab structure that enables easy removal after delivery. The applicator body and adhesive layer can be separated, allowing the adhesive to remain on the skin while the device is removed, or allowing controlled removal of both together.
Solution Approach 2:
A pull tab or chord is introduced as an intermediary element between the user's hand and the adhesive applicator. This intermediary provides a mechanical advantage and controlled force application point, enabling the user to remove the adhesive layer without directly pulling on the injector body or risking damage to the device.
2Reliability
If the adhesive applicator is designed to be securely attached during delivery, then proper positioning is maintained, but the device becomes difficult to remove without risking damage
Solution Approach 1:
The system is segmented into the injector device and the adhesive applicator, which can be separately removed. The applicator remains attached to the skin after injector removal, or both can be removed together using the pull tab mechanism, preventing accidental damage to the injector during the removal process.
Solution Approach 2:
The pull tab serves as a mediator that distributes removal force across the entire adhesive applicator assembly rather than concentrating stress on the injector-device interface. This prevents accidental detachment or damage to the injector body during the removal process.
3Reliability
If the adhesive layer covers the entire applicator surface, then maximum adhesion is achieved, but the device becomes cumbersome and difficult to handle during application and removal
Solution Approach 1:
The adhesive applicator is segmented with a pull tab or chord that extends beyond the adhesive area. This provides a dedicated grip point that is separate from the adhesive surface, allowing users to handle and remove the applicator without their fingers interfering with the adhesive function or the injector body.
Solution Approach 2:
The pull tab extends the functionality into a new spatial dimension, providing a three-dimensional handle that protrudes from the planar adhesive surface. This allows users to grasp and manipulate the applicator from above without contacting the adhesive area, improving handling ergonomics.
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
These configurations enhance the usability of wearable drug delivery devices by ensuring secure adhesion during delivery and easy, comfortable removal, reducing the risk of damage and discomfort, and improving the overall patient experience.
Implementation Method 1
such delivery devices can be equipped with an adhesive layer that temporarily adheres to the patient's skin during delivery
Data Source
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AI summary
Various novel arrangements for facilitating adherence of an on-body injector onto a patient's skin and subsequently removing the injector after drug delivery has occurred. Such arrangements can include adhesive configurations that conform to body contours, adhesive configurations that include pull rings or chords, tabs, or perforated seams to facilitate one-step or two-step removal, and/or injector bodies with gripping features to facilitate manual grasping.