Luer Lock Needle Holder for Secure Fixation Without Skin Irritation
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Solution Overview
Problem
Existing needle holders cause skin irritation and have weak fixing force due to their design, with rubber types prone to detachment and rotary types causing skin irritation over time.
Innovation Solution
A needle holder with a body member and fixing member, featuring a cylindrical design and elastic grip members to securely attach a needle hub without causing skin irritation, utilizing a female Luer lock mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rotary type needle holder with circular screw thread is used, then securing power is improved, but skin irritation occurs due to round and protruding shape
Solution Approach 1:
The needle holder is divided into distinct functional segments: a flat base portion for skin contact, a cylindrical body portion for structural support, and a threaded engagement portion for securing. This segmentation allows each part to optimize its function without compromising the others.
Solution Approach 2:
Different portions of the needle holder have different geometric properties optimized for their specific functions: the base portion is flat and smooth for skin contact, the body portion is cylindrical for structural integrity, and the engagement portion has threads for mechanical fastening. This local optimization resolves the contradiction between securing power and skin comfort.
2Ease of operation
If a rubber type needle holder with male and female set is used, then ease of operation is improved, but securing power deteriorates due to easy detachment
Solution Approach 1:
The invention merges the advantages of both rubber type (ease of operation) and rotary type (securing power) by incorporating a threaded engagement mechanism within a simplified cylindrical structure that maintains ease of use while providing strong mechanical fastening.
Solution Approach 2:
The needle holder utilizes composite construction combining materials with different properties: a flexible base portion for skin contact, a rigid cylindrical body for structural support, and threaded portions for secure mechanical engagement. This composite approach resolves the contradiction between ease of operation and securing power.
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 provides strong fixing force and minimizes skin irritation by using a female Luer lock connector with elastic grip members, ensuring stable attachment of the needle hub.
Implementation Method 1
elastic grip members to securely attach a needle hub
Data Source
AI summary
The present invention relates to a needle holder capable of fixing a catheter and minimizing skin irritation, wherein a blood vessel proximity apparatus can be fixed without skin irritation by means of a body member in which a body part, an injection end, and a discharge end are integrally formed.