Lancing Device Impact Absorbing Mechanism
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Solution Overview
Problem
Conventional lancing devices cause pain and discomfort due to impact and noise during skin puncture, as the collision of moving parts results in significant force transmission to the skin.
Innovation Solution
A lancing device incorporating an impact absorbing mechanism, such as an elastic member or frictional surface, to absorb the energy of moving parts at the moment of stopping, reducing the impact and noise during puncture operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cam mechanism is used to drive the lancet for skin puncture, then the lancet can be moved reliably to the puncturing position, but impact and noise occur when the moving parts stop, causing pain and discomfort
Solution Approach 1:
The patent introduces an impact absorbing means (such as a buffer member or elastic element) that is positioned in advance to absorb the impact energy when the cam mechanism completes its rotation and the lancet holder stops at the puncturing position. This cushioning mechanism is pre-installed in the housing to mitigate the collision between the engaging pin and the groove end, thereby reducing pain and noise without affecting the reliability of the lancet delivery mechanism.
2Productivity
If the engaging pin collides with the end of the groove to stop the lancet movement, then the puncturing action is completed, but the collision transmits impact force to the skin increasing pain
Solution Approach 1:
The patent introduces an intermediary impact absorbing means between the cam mechanism's moving parts (engaging pin and groove) and the skin. This intermediary element (such as a buffer member, elastic damper, or friction-based absorber) intercepts the impact energy generated when the engaging pin reaches the end of the groove, converting it into heat or elastic deformation energy, thereby preventing the direct transmission of collision force to the skin while still allowing the puncture operation to complete successfully.
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 impact absorbing mechanism effectively reduces pain and discomfort by dissipating the energy of the moving parts, thereby minimizing the force transmitted to the skin during puncture, enhancing user experience.
Implementation Method 1
the elastic member is for absorbing the impact by elastic deformation
Implementation Method 2
the elastic member is a coil spring for intervening between the housing and the first or the second moving member, when the first and the second moving members come to stop on puncture operation
Data Source
AI summary
A lancing device (X) comprising a first moving member (32) holding a lancing member (11) moved from a standby position to a puncturing position in a puncturing direction (N1), for puncturing a target portion by the lancing member (11). The lancing device (X) further comprises a second moving member (31) connected to the first moving member (32), for controlling the movement of the first moving member (32) upon the movement of the second moving member, and also comprises an impact absorbing means (23A) for absorbing impact that is caused when the first and the second moving members (31), (32) come to stop on puncture operation. The impact absorbing means (23A) includes an elastic member (23Ab) for absorbing impact by elastic deformation.