Adhesive Pad for Hands-Free Autoinjector Injection
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Solution Overview
Problem
Current medicament delivery devices, such as autoinjectors, face challenges with prolonged injection times and user convenience, particularly for patients requiring frequent injections of viscous drugs, as they often require manual operation and can cause variable injection depth and needle stick injuries.
Innovation Solution
A pad system that attaches to the injection site, featuring an adhesive portion and a medicament delivery member, allowing for hands-free operation of autoinjectors, reducing needle stick injuries, and enabling multiple injections through a single medicament delivery member, which can be reused over several days.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If autoinjector is used for prolonged injection of viscous drugs, then injection completeness is improved, but user convenience deteriorates due to required manual operation
Solution Approach 1:
The pad merges the functions of skin attachment and medicament delivery device support into a single integrated structure. The adhesive portion attaches to the skin while the support portion holds the autoinjector, combining what were previously separate operations into one hands-free system.
Solution Approach 2:
The pad acts as an intermediary between the autoinjector and the user's body. It provides a stable mounting surface that allows the autoinjector to remain stationary during prolonged injection, eliminating the need for manual holding while ensuring complete drug delivery.
2Speed
If traditional injection method is used, then injection speed is maintained, but needle stick injuries occur due to variable injection depth
Solution Approach 1:
The pad is attached to the skin beforehand, establishing a fixed reference point for needle insertion. The support portion positions the autoinjector at a predetermined depth and angle, ensuring consistent needle penetration depth before the injection begins, thereby preventing variable injection depth and associated injuries.
3Reliability
If single-use needle is used, then safety is improved, but waste increases due to frequent needle replacements
Solution Approach 1:
The system segments the injection process into two independent components: the reusable pad with cannula that remains attached to the skin, and the disposable autoinjector that delivers medication and is removed after use. This allows the safe cannula to be reused for multiple injections while maintaining safety through single-use medication delivery devices.
4Measurement precision
If manual operation is required during injection, then injection control is maintained, but productivity decreases due to time consumption
Solution Approach 1:
The pad provides self-service by maintaining the autoinjector in a fixed position on the skin during the entire injection process. The device performs its own function of delivering medication through the cannula without requiring continuous manual intervention, allowing patients to engage in other activities while the injection completes automatically.
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
Enables prolonged injection times without manual operation, reduces needle stick injuries, and simplifies the injection process by allowing multiple injections from a single site, improving user convenience and reducing waste.
Implementation Method 1
a second attachment portion, in this example an adhesive portion (16), attached to the attachment portion (14), wherein the adhesive portion (16) is arranged at the proximal end (50) of the pad (10), and wherein the adhesive portion (16) is configured to attach the pad (10) to said injection site when the pad (10) is in use
Data Source
AI summary
Pads for attaching medicament delivery devices such as autoinjectors to an injection site are presented that include a pad extending along an axis from a proximal end to a distal end, where the proximal end is the end of the pad adjacent to an injection site when the pad is in use, the pad can have an attachment portion configured to receive a medicament delivery device and a second attachment portion attached to the attachment portion, wherein the second attachment portion is arranged at the proximal end of the pad, and wherein the second attachment portion is configured to attach the pad to said injection site when the pad is in use.