CGM Inserter Pivot-Retraction Mechanism for Reliable Sensor Placement
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Solution Overview
Problem
Existing CGM inserter devices are complicated and costly to manufacture, necessitating the development of a more efficient and cost-effective inserter apparatus for continuous analyte monitoring.
Innovation Solution
A continuous analyte monitoring inserter apparatus comprising an outer and inner member with telescopic alignment, a transmitter carrier, a pivot member, and a bias member that facilitates axial and pivot motions to insert a biosensor, utilizing biodegradable and recyclable materials to reduce manufacturing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing CGM inserter designs are used, then reliable biosensor insertion is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The inserter device is divided into distinct functional modules: an outer member with a first pivot window, an inner member with a second pivot window, a transmitter carrier, a pivot member, and an insertion device. Each segment performs a specific function and can be manufactured independently, reducing overall manufacturing complexity while maintaining insertion reliability.
Solution Approach 2:
The inner member is configured to telescope relative to the outer member, with the pivot member entering the first pivot window through the second pivot window during operation. This nested arrangement allows compact storage and simplified handling while enabling the complex insertion motion sequence required for reliable biosensor deployment.
2Ease of manufacture
If existing CGM inserter designs are used, then biosensor insertion function is achieved, but manufacturing cost increases
Solution Approach 1:
The bias member serves multiple functions: it biases the pivot member to impart axial movement during the first portion of the stroke, and then causes pivot motion during the second portion of the stroke. This multi-functionality reduces the number of separate components needed, simplifying manufacturing while achieving the complex insertion and retraction sequence.
Solution Approach 2:
The pivot member transitions from axial motion to pivot motion during the insertion stroke, enabled by the bias member's interaction with the pivot windows. This dynamic change in motion mode allows a single component to perform multiple operational phases, reducing overall device complexity and manufacturing cost.
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 inserter apparatus allows for efficient and cost-effective insertion of biosensors with reduced manufacturing complexity, enabling continuous analyte monitoring while promoting environmental sustainability through the use of biodegradable and recyclable components.
Implementation Method 1
a bias member that facilitates axial and pivot motions to insert a biosensor
Data Source
Figure 1A
Figure 1B
Figure 1C~2A
AI summary
An inserter apparatus (e.g., a continuous analyte monitoring inserter apparatus) includes an outer member; an inner member; a transmitter carrier configured to support a transmitter and biosensor assembly during insertion of a biosensor, the transmitter carrier including a bias member; and a pivot member configured to pivot at times relative to the transmitter carrier and support an insertion device during biosensor insertion. The outer member is configured to press the bias member against the pivot member during insertion of the biosensor. During a first stroke portion of the insertion apparatus, the pivot member is prevented from pivoting, In a second stroke portion, pivoting is allowed, and the bias member causes, pivoting of the pivot member and retraction of the insertion device. Other systems and methods embodiments are provided.