Body Mount Bleeding Detection for Accurate CGM Sensor Insertion
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Solution Overview
Problem
Continuous glucose monitoring (CGM) systems are adversely affected by bleeding at the site of sensor insertion, leading to temporary sensor sensitivity reduction or overestimation of glucose levels due to blood components adsorbing on the sensor surface, which can last for several hours or days.
Innovation Solution
A body mount with a capillary for blood collection and a bleeding detector, such as an optical or electrical sensor, to detect and monitor bleeding at the site of transdermal medical device insertion, allowing for real-time adjustment of sensor calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transdermal medical device is inserted into body tissue for continuous monitoring, then continuous monitoring capability is achieved, but bleeding occurs at the insertion site causing sensor sensitivity reduction and measurement errors
Solution Approach 1:
The patent applies preliminary action by implementing a bleeding detection mechanism that activates immediately upon sensor insertion. The system proactively detects bleeding at the insertion site before it significantly impacts measurement accuracy, allowing for early intervention through calibration adjustment. This prevents the worsening of measurement precision rather than reacting after the problem occurs.
Solution Approach 2:
The patent implements feedback by continuously monitoring for bleeding at the insertion site and using this information to dynamically adjust sensor calibration. The system receives feedback from bleeding detection sensors and automatically modifies measurement parameters to compensate for bleeding-induced sensitivity reduction, thereby maintaining measurement accuracy despite the presence of bleeding.
2Measurement precision
If bleeding detection and calibration adjustment mechanisms are added to the monitoring system, then measurement accuracy during bleeding is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the bleeding detection functionality directly into the existing sensor assembly. The bleeding detection sensors, calibration adjustment mechanisms, and glucose monitoring functions are combined into a single unified device, eliminating the need for separate external monitoring equipment and reducing overall system complexity despite adding advanced capabilities.
Solution Approach 2:
The patent implements universality by designing a multi-functional sensor assembly that simultaneously performs glucose monitoring, bleeding detection, and automatic calibration adjustment. This single device executes multiple functions that would traditionally require separate systems, thereby improving measurement accuracy during bleeding without proportionally increasing device complexity.
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
The system effectively detects and responds to bleeding, ensuring accurate glucose monitoring by adjusting sensor sensitivity, thereby preventing underestimation or overestimation of glucose levels.
Implementation Method 1
at least one optical bleeding detector for detecting blood in the capillary
Implementation Method 2
at least one capillary for taking up blood from the body of the user
Data Source
AI summary
A body mount for mounting at least one transdermal medical device to a body surface of a user is disclosed. The body mount includes: at least one base element having at least one mounting surface for attachment to the body surface of the user, at least one capillary for taking up blood from the body of the user when the base element is attached to the body surface of the user; and at least one bleeding detector configured for detecting blood in the capillary. Further disclosed are a medical device including the body mount, a medical kit including the medical device, a method of monitoring a transdermal medical device, and a method of determining at least one physiological parameter in a body tissue of a user and computer programs and computer-readable storage media for performing the methods.


