Integrated Blood Sampling Unit with Spring-Driven Needle and Removable Test Strip
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Solution Overview
Problem
Current methods for blood glucose monitoring are cumbersome and inefficient, requiring separate preparation and handling of puncture implements and sampling devices, which complicates the process and delays measurement.
Innovation Solution
A body fluid sampling unit that integrates a puncture mechanism and a sampling implement within a single device, featuring a needle with a spring-driven mechanism and a reagent-containing test paper, allowing for easy preparation and rapid sampling by moving the needle to a puncturing position under spring bias, with the sampling implement being removable and mountable to a measuring device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If puncture implement and sampling implement are prepared separately, then each component can be optimized independently, but the preparation process becomes troublesome and measurement speed decreases
Solution Approach 1:
The patent combines the puncture implement (needle with drive mechanism) and the sampling implement (test strip holder with reagent) into a single integrated device. The needle is positioned in a first compartment while the test strip holder is in a second compartment, both within the same device housing. This integration allows the user to perform both puncturing and sampling operations with one device, eliminating the need to prepare and handle separate implements, thereby improving measurement speed and operational efficiency.
2Ease of operation
If needle is exposed to puncture position, then puncturing operation can be performed, but accidental puncture risk increases
Solution Approach 1:
The device is divided into distinct compartments: a first compartment housing the needle and drive mechanism, and a second compartment housing the test strip holder. This segmentation allows the needle to be easily accessible for its intended function while being physically separated from other components. The compartmentalization provides structural organization that reduces the risk of accidental activation or contact with the sharp needle point.
Solution Approach 2:
The needle is nested within the first compartment, which itself is part of the larger device housing. The test strip holder is nested in the second compartment. This nested structure allows the needle to be contained and protected when not in use, while still being accessible when needed. The hierarchical nesting provides multiple levels of containment that reduce accidental exposure risk.
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
This integration simplifies the preparation and operation of blood glucose monitoring, allowing for speedy and efficient sampling and measurement by keeping the sampling implement contained until use, reducing handling steps and improving operational efficiency.
Implementation Method 1
a spring applying a biasing force to the needle urging the needle from a housed position in which the sharp needle point is housed inside the case to a puncturing position in which the sharp needle point is exposed outside the case to puncture the living body tissue
Data Source
AI summary
A body fluid sampling unit includes a puncture device including a needle having a sharp needle point and a drive mechanism for operating the needle to puncture a living body surface with the needle point, a tip including an introducing section for introducing a body fluid flowing out from a puncture portion of the living body surface punctured with the needle point, a test paper for detecting a predetermined component in the body fluid, and a tip body mounted to a component measuring device for measuring the quantity and/or property of the predetermined component detected by the test paper; and a case including a mechanism containing section for containing the puncture mechanism so that the needle point of the puncture mechanism can be moved by the drive means, and a sampling implement containing section for containing the body fluid sampling implement so that the tip can be taken out.