Patch Applicator With Biasing Mechanism For Consistent Skin Penetration
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Solution Overview
Problem
Existing patch applicators for delivering bioactive materials via projections are complex, expensive to manufacture, and require precise positioning and alignment, making them difficult to use effectively.
Innovation Solution
A patch applicator with opposable jaws that can be moved between open and engaging positions, featuring a biasing mechanism to control application parameters such as force and velocity, and a patch support to ensure consistent penetration of projections into the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing patch applicators with piston or plunger mechanisms are used, then bioactive material can be delivered via projections, but the device complexity increases and manufacturing cost increases
Solution Approach 1:
The invention extracts the essential function of patch application from the complex piston/plunger mechanism, retaining only the necessary elements (applicator head, patch support, biasing mechanism) while eliminating unnecessary complexity. This resolves the contradiction by maintaining reliable projection delivery through simplified means.
Solution Approach 2:
The biasing mechanism automatically provides the necessary force for patch application without requiring complex external actuation systems. The applicator self-regulates the application parameters through the spring-loaded mechanism, eliminating the need for sophisticated control systems while ensuring consistent delivery.
2Reliability
If existing patch applicators with piston or plunger mechanisms are used, then bioactive material can be delivered via projections, but the manufacturing cost increases
Solution Approach 1:
The invention employs a disposable applicator design where the applicator head and patch support are intended for single use. This eliminates the need for expensive, complex mechanisms that would require maintenance, calibration, or sterilization, thereby reducing manufacturing costs while ensuring reliable delivery through simple, robust construction.
Solution Approach 2:
The applicator is divided into separate, simple components (applicator head, patch support, biasing mechanism) that can be manufactured independently using inexpensive processes and assembled easily. This segmentation reduces overall manufacturing complexity and cost while maintaining functional reliability.
3Manufacturing precision
If existing patch applicators require precise positioning and alignment, then projection penetration can be controlled, but the ease of operation decreases
Solution Approach 1:
The applicator incorporates a dynamic, spring-loaded mechanism that automatically adapts to variations in skin surface topology. The biasing mechanism provides consistent force while allowing natural movement and alignment, eliminating the need for precise manual positioning by the operator while maintaining controlled penetration depth through the projection geometry and spring force characteristics.
Data Source
AI summary
Apparatus for applying a patch to a subject, the patch having a number of projections thereon, the apparatus including opposable jaws movable between open and engaging positions, wherein in the open position the jaws can receive at least part of the subject, and in the engaging position the jaws can engage the at least part of the subject and a patch support for supporting a patch, and wherein the patch support is for urging the patch against the at least part of the subject.