Segmented Adhesive Patch for Medical Instrument Attachment
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Solution Overview
Problem
Medical instruments applied to the skin for extended periods face issues with adhesion, leading to peeling and pain upon removal, as stronger adhesion is required to prevent detachment but can irritate the skin and cause discomfort.
Innovation Solution
A sheet-like application member with distinct regions of varying adhesion strengths, including a first region for attaching the medical device and a second region with stronger adhesion around it, featuring tear portions to facilitate easy removal without causing skin irritation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a patch with strong adhesion is used to prevent the medical instrument from peeling off, then the adhesive strength between the medical instrument and skin is improved, but the skin irritation and pain during removal increases
Solution Approach 1:
The application member is divided into a first region with weaker adhesion and a second region with stronger adhesion. The first region is designed to be easily removable from the skin, while the second region maintains strong attachment. This segmentation allows the patch to provide strong overall adhesion while enabling painless removal of the first region, thus resolving the contradiction between strong adhesion and skin irritation during removal.
Solution Approach 2:
Different regions of the application member are assigned different adhesion characteristics. The first region has weaker adhesion suitable for easy removal, while the second region has stronger adhesion for secure attachment. This local differentiation of adhesion properties allows the patch to simultaneously achieve strong overall adhesion and painless removal capability.
2Reliability
If a patch with strong adhesion is used to ensure the medical instrument stays on the skin, then the reliability of the medical instrument application is improved, but the difficulty of removing the medical instrument increases
Solution Approach 1:
The application member is segmented into a first region that is easily removable and a second region that maintains strong attachment. This segmentation enables the patch to remain reliably attached during use while allowing simple removal of the first region, thus resolving the contradiction between reliability and ease of removal.
Solution Approach 2:
Instead of making the entire patch easily removable, the invention inverts the approach by making only the first region easily removable while keeping the second region strongly attached. This inverted design allows the patch to maintain reliability through the second region while providing ease of removal through the first region.
Data Source
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AI summary
A sheet-like application member 30 having an application surface 30b to be applied to a subject, the application member 30 including a first region 31 having an attachment surface 30a to which a medical device 20 can be attached, the attachment surface 30a being different from the application surface 30b, a second region 32 having stronger adhesion in the application surface than the first region and provided around the first region 31, and a tear portion 33 capable of tearing a portion within the first region 31 or of tearing apart the first region 31 and the second region 32.