Segmented Sensor Base for Liquid Medicine Injection
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Solution Overview
Problem
Conventional Liquid medicine injection apparatuses require the removal of the sensor portion from the skin to replace the reservoir portion, leading to skin tissue clumping and reduced insulin absorption rates due to repeated needle insertions at the same position.
Innovation Solution
A Liquid medicine injection apparatus design where the sensor portion is spatially separable from the base portion, allowing independent installation and maintenance, and enabling the base and cover portions to be coupled to the sensor in varying directions to change the needle insertion position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sensor portion is integrated with the base portion on a single base, then the structure is simplified and easier to manufacture, but the sensor portion must be removed from the skin to replace internal components like reservoir and battery
Solution Approach 1:
The Liquid medicine injection apparatus is divided into separate functional modules: the sensor portion that remains attached to the skin, and the base portion containing replaceable internal components (reservoir, battery, needle). This segmentation allows the sensor to stay in place while internal components can be independently replaced without removing the sensor from the user's body.
2Device complexity
If the sensor portion is integrated with the base portion, then the device has fewer parts, but repeated needle insertions at the same position cause skin tissue clumping and reduced insulin absorption
Solution Approach 1:
The base portion is designed to be rotatable relative to the sensor portion, allowing the needle insertion position to be dynamically changed by rotating the base portion to different angular positions. This dynamic repositioning prevents repeated insertions at the same skin location, thereby preventing tissue clumping and maintaining reliable insulin absorption.
3Duration of action of stationary object
If the sensor portion usage period is longer than the reservoir storage period, then the sensor can remain installed longer, but the reservoir must be replaced while the sensor remains installed
Solution Approach 1:
By separating the sensor portion from the base portion containing the reservoir, the patent enables independent replacement of the reservoir while keeping the sensor installed. The sensor's longer usage period is maintained, and the reservoir can be replaced at its shorter storage period without removing the sensor, optimizing both component lifecycles.
Data Source
AI summary
A Liquid medicine injection apparatus includes: a needle portion having one or more needle bodies configured to be injected into a user's body, a reservoir portion configured to accommodate a medical liquid and receive power from a driving portion to deliver the medical liquid to the needle portion, a base portion on which the reservoir portion, the needle portion, and the driving portion are installed, a cover portion covering the base portion, and a sensor portion configured to measure blood sugar. In the cover portion, an insertion groove which has one side open and has a preset depth is formed, and the sensor portion is insertable into the insertion groove and is spatially separable from the base portion.