Reciprocating Lancing Device for Low-Pain Blood Sampling
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Solution Overview
Problem
Existing lancing devices cause discomfort and pain due to repeated piercing of the same skin location, as they are designed for single lancing and do not effectively rupture capillaries without hitting pain receptors, especially for diabetic patients who need frequent blood glucose monitoring.
Innovation Solution
A lancing device with a reciprocating actuator that enables a lancet to perform multiple linear reciprocating motions upon a single trigger activation, minimizing skin contact and reducing pain by using smaller diameter needles that avoid pain receptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lancing device is designed for single lancing with a needle extending beyond the skin contact surface, then effective capillary rupture and blood sampling is achieved, but repeated piercing of the same skin location causes discomfort and pain
Solution Approach 1:
The lancet connector is designed to move dynamically between retracted and extended positions. The needle is retracted into the lancing device body when not in use and only extends beyond the skin contact surface during the lancing action, enabling repeated use without continuous pain or callus formation at the same location
Solution Approach 2:
The reciprocating actuator mechanism provides periodic extension and retraction of the lancet connector. This periodic motion allows the needle to pierce the skin only during the forward stroke while retracting during the return stroke, distributing the mechanical action and reducing cumulative tissue damage and pain
2Quantity of substance
If a lancing device uses a needle that extends beyond the skin contact surface during lancing, then sufficient blood sample can be obtained, but the device complexity increases due to mechanisms needed for needle retraction and extension
Solution Approach 1:
The reciprocating actuator mechanism is integrated directly into the lancing device body, combining the functions of needle extension, retraction, and blood sample collection into a single unified mechanism. This integration reduces the number of separate components and simplifies the overall device structure while maintaining the capability for effective blood sampling
Solution Approach 2:
The reciprocating actuator is designed to automatically return the lancet connector to its retracted position after each lancing action without requiring manual intervention. The mechanism self-regulates the needle position, eliminating the need for additional control systems or user操作步骤, thereby reducing device complexity
3Ease of operation
If the lancet connector remains in an extended position for easy access, then operation is simplified, but the needle may accidentally contact or damage the skin contact surface
Solution Approach 1:
The lancet connector is pre-positioned in a retracted state during storage and transport, ensuring the needle cannot accidentally contact the skin contact surface. The user intentionally activates the reciprocating actuator to extend the needle only when ready to perform lancing, eliminating accidental contact while maintaining ease of operation through clear activation signals
Data Source
AI summary
The present disclosure provides a lancing device that includes a lancet for piercing a user's skin and a lancing device body to drive the lancet. An actuator included in the lancing device body can drive the lancet to perform a linear reciprocating motion multiple times upon a single activation. Accordingly, the lancet may pierce the user's skin multiple times upon a single activation.