Lancet Device Cover Mechanism for Controlled Blood Sampling
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Solution Overview
Problem
Current blood glucose monitoring devices for diabetes management often cause pain and are cumbersome, leading to inconsistent user compliance due to issues with lancet depth, blood flow, and the need for frequent lancet replacement.
Innovation Solution
A compact lancet device with a hinged cover that allows controlled movement to minimize pain and maximize blood flow, combined with a portable biological test kit featuring reusable and disposable modules for efficient glucose monitoring, including visual and tactile feedback and easy replacement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the lancet is inserted deeper to draw sufficient blood for testing, then the quantity of blood sample is improved, but the pain and blood flow become excessive
Solution Approach 1:
The device allows dynamic adjustment of the lancet insertion depth parameter. Users can dial or select different depth settings before each use, enabling optimization of the insertion depth to match individual needs and achieve sufficient blood sample without excessive pain or blood flow.
Solution Approach 2:
The lancet device incorporates a movable depth adjustment mechanism that allows the insertion depth to be changed between uses. This dynamic adjustment capability enables the system to adapt to different users and conditions, resolving the contradiction between obtaining sufficient blood and minimizing pain.
2Object-affected harmful factors
If the lancet is inserted less deep to reduce pain, then the pain level is improved, but the quantity of blood sample becomes insufficient
Solution Approach 1:
By allowing adjustment of the insertion depth parameter, users can find the optimal depth that provides sufficient blood sample while keeping pain at an acceptable level. This parameter control resolves the contradiction between pain reduction and blood sample adequacy.
3Reliability
If the lancet is replaced with each use to prevent infection and dullness, then the reliability and comfort are improved, but the device complexity and cost increase
Solution Approach 1:
The device is divided into reusable and disposable components. The lancet and its housing form a disposable module that can be easily attached and detached from the reusable main body. This segmentation allows single-use lancets to maintain reliability while simplifying the overall device structure and reducing complexity.
Solution Approach 2:
The disposable lancet housing is designed to nest within or attach to the reusable device body. This nested design allows for easy replacement of the disposable component without requiring complex mechanisms, resolving the contradiction between maintaining reliability through frequent replacement and minimizing device complexity.
4Manufacturing precision
If multiple components are assembled to provide depth control and cover mechanisms, then the measurement precision and control are improved, but the ease of operation deteriorates
Solution Approach 1:
The depth adjustment mechanism is pre-configured with tactile markers and visual indicators that guide users through the adjustment process. The cover mechanism is pre-loaded in a ready-to-use state, eliminating the need for complex assembly operations during actual use and improving ease of operation while maintaining precision.
Solution Approach 2:
The device incorporates tactile feedback through clicks or detents at specific depth settings, and visual feedback through windows or indicators showing the selected depth. This feedback mechanism guides users to the correct settings without requiring complex assembly, resolving the contradiction between precision control and ease of operation.
Data Source
AI summary
This disclosure provides equipment and processes for blood glucose management. Embodiments may comprise a lancet device that includes a base that supports a lancet and a cover. The cover can move controllably from an un-depressed position to a depressed position when a predetermined force is applied. The cover can provide access to the lancet in the depressed position. In another aspect, a biological test kit may include a reusable module and a disposable module. The disposable module may include one or more lancet devices such as that described above to collect a biological sample, one or more strip stations supporting biological strips and a disposable module connector. The reusable module may support measuring equipment to measure a property of the biological sample and a reusable module connector that engages removably with the disposable module connector.