On-Body Sensor Insertion via Self-Penetrating Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sensor insertion systems for in vivo monitoring are cumbersome and complex, requiring multiple steps and tools, which can adversely affect sensor performance and require manual handling, leading to complications during the insertion process.
Innovation Solution
An on-body insertion system that uses a sensor assembly with a carriage and actuator to transition from a first position to a second position parallel to the skin surface, allowing the sensor to be inserted below the skin surface without a needle, utilizing cooperative insertion where the sensor creates its own wound channel, simplifying the process and reducing trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a needle is used to drive the sensor into subcutaneous tissue, then insertion depth control is improved, but device complexity and tissue trauma increase
Solution Approach 1:
The patent removes the needle component from the insertion system entirely. Instead of using a needle to drive the sensor, the sensor assembly itself is designed to be inserted directly into subcutaneous tissue through a simple puncture or opening, eliminating the need for needle-based delivery mechanisms and reducing overall system complexity
Solution Approach 2:
The sensor assembly is designed to create its own insertion path through the skin without requiring external mechanical assistance like needles. The sensor leading edge is configured to penetrate tissue directly, allowing the sensor to serve its own insertion function rather than being passively delivered by a separate needle mechanism
2Adaptability or versatility
If multiple components (sensor, electronics package, adhesive patches) are used, then sensor functionality is improved, but ease of operation deteriorates
Solution Approach 1:
The patent integrates the sensor, electronics package, and adhesive interface into a single unified sensor assembly. This consolidation eliminates the need for separate adhesive patches and multiple components, allowing the entire functional unit to be inserted and applied in one operation, thereby improving ease of operation while maintaining full functionality
Solution Approach 2:
The sensor assembly is designed as a multi-functional integrated unit that combines sensing, electronics, adhesion, and insertion capabilities in a single component. This universal design allows one component to perform multiple functions that previously required separate parts, simplifying the insertion process while preserving all necessary functionalities
3Ease of operation
If repeated handling and manipulation of the insertion site is performed, then sensor placement is achieved, but sensor performance deteriorates
Solution Approach 1:
The sensor assembly is pre-configured with the adhesive interface and electronics package attached before insertion. This preliminary preparation ensures that all components are in their final positions before the sensor is inserted into the tissue, eliminating the need for post-insertion manipulation or repositioning that could compromise sensor performance or integrity
Data Source
AI summary
An on-body insertion system is described. The on-body system includes a sensor in a first position being substantially parallel to an insertion surface. Activation of an actuator transitions the sensor to a second position. Wherein the transition imparts movement to the sensor that is substantially parallel to the insertion surface and the second position results in the sensing area being beneath the insertion surface.