Disposable Lancet Blade Curved Path Mechanism
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Solution Overview
Problem
Current lancet devices are difficult to handle, often painful, and complex, making it challenging to obtain blood samples, especially for individuals with shaky hands or needle phobias, and there is a need for a disposable, inexpensive, and ergonomically designed solution for safe and easy use.
Innovation Solution
A disposable blade lancet device with a triggering mechanism that includes a blade member movable between retracted positions, guided by a biasing arrangement and a guiding mechanism, ensuring a curved and linear path for smooth skin penetration, and a safety mechanism to prevent reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a plunging blade movement is used, then blood sampling can be performed, but the procedure becomes painful
Solution Approach 1:
The blade member is guided to move along a curved path rather than a straight linear path. The guiding arrangement includes curved guides that constrain the blade member to follow an arcuate trajectory, which allows the blade to enter the skin at an angle and exit parallel to the skin surface, reducing pain and improving ease of operation.
2Ease of operation
If a slicing movement is used, then blood sampling can be performed, but the procedure becomes painful
Solution Approach 1:
The blade member is guided to move along a curved path rather than a straight linear path. The guiding arrangement includes curved guides that constrain the blade member to follow an arcuate trajectory, which allows the blade to enter the skin at an angle and exit parallel to the skin surface, reducing pain and improving ease of operation.
3Reliability
If a controlled blade path with maximum depth is used, then reliable blood sampling can be achieved, but the device becomes complex with multiple parts
Solution Approach 1:
The guiding arrangement is integrated into the body structure, combining the guiding function with the housing. The curved guides are formed as integral parts of the body, eliminating the need for separate guiding components and reducing overall device complexity while maintaining reliable controlled blade path.
Solution Approach 2:
The body structure serves multiple functions: it houses the blade member, provides the curved guiding path, and contains the biasing arrangement. This multi-functional design reduces the number of separate components needed, simplifying the device while maintaining reliable blood sampling capability.
4Ease of operation
If a disposable design is used, then ease of use and hygiene are improved, but manufacturing cost increases
Solution Approach 1:
The device is designed as a single disposable unit that can be manufactured as one integrated component or assembly. The segmented design allows for simplified manufacturing processes and reduces the need for complex assembly operations, helping to control manufacturing costs while maintaining ease of use and hygiene advantages.
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 device allows for easy, safe, and less painful blood sampling, is ergonomically designed for comfort, and ensures the blade is safely contained after use, making it suitable for single-use applications.
Implementation Method 1
A biasing arrangement biases the blade member from the first retracted position towards the extended position and then towards the second retracted position
Implementation Method 2
the biasing arrangement comprises a spring
Data Source
AI summary
Single-use blade lancet device includes a body having a rear end and a front end. A triggering mechanism has a blade tip opening and is mounted to the body. A blade member is movably mounted within the body and includes a front end and a rear end. The blade member is movable at least between a first retracted position, an extended position, and a second retracted position. A biasing arrangement biases the blade member from the first retracted position towards the extended position and then towards the second retracted position. A guiding arrangement guides the blade member while the blade member moves from the first retracted position towards the extended position and then towards the second retracted position. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.