Blood Lancing Device Slide Rail Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional blood lancing devices experience vibration and increased friction during the movement of the lancet holder, which can lead to instability and difficulty in precise skin puncture.

Innovation Solution

The design incorporates a lancet holder with a slide rail system and wing portions that limit lateral movement and reduce friction, using a resilient element and push structure to facilitate smooth and vibration-free operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the lancet holder is allowed to move freely in the containing space, then the ease of operation is improved, but the stability and vibration control deteriorate

Engineering Contradiction:

Improveease of operationVSAvoidstability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

A slide rail is introduced as an intermediary component between the lancet holder and the housing. The slide rail guides the lancet holder's movement along a predetermined path, allowing operational movement while preventing lateral displacement and vibration. This mediator enables both ease of operation and stability simultaneously.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The movement parameters of the lancet holder are changed from free multidirectional movement to constrained unidirectional movement along the slide rail. This parameter change allows the lancet holder to move smoothly for operation while eliminating lateral vibrations, resolving the contradiction between ease of operation and stability.

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If the lancet holder moves along the slide rail with tight fit, then the stability is improved, but the friction force increases

Engineering Contradiction:

ImprovestabilityVSAvoidfriction force

Core Design Contradiction:

Stability of the object's compositionVSForce

Solution Approach 1:

The slide rail and through hole are designed with specific local geometric qualities that balance stability and friction. The through hole in the lancet holder is shaped to fit the slide rail tightly enough to prevent lateral movement and vibration, while maintaining smooth surfaces and appropriate clearance to minimize friction during longitudinal movement.

Inventive Principle:

Principle #3Local quality

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 solution effectively minimizes vibration and reduces friction, allowing for a more stable and efficient blood collection process with reduced likelihood of device instability during use.

Implementation Method 1

the blood lancing device further comprises a resilient element. The slide rail is inserted into the resilient element

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the slide rail is inserted into the through hole such that the lancet holder is movable along the slide rail. Since the through hole and the slide rail can limit the lateral movement of the lancet holder

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentEP2298172B1Blood lancing device

Publication Date: 2012.06.20 EPS BIO TECH CORP

Figure 1
Figure 2A~2B
Figure 3

AI summary

A blood lancing device (100) has a housing, a lancet holder (4) and at least one sliding rail (5). The lancet holder is movably disposed in the housing and defines at least one through hole (43). The sliding rail is fixed in the housing and threads through the through hole so that the lancet holder is capable of moving along the sliding rail.