Laser-Textured Injection Needles for Stronger Syringe Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for surface texturing of injection needles, such as sand-blasting, are inefficient and lack accuracy for small needles, and do not provide consistent adhesion and bonding with the syringe barrel.
Innovation Solution
A method using lasers to create a pattern of depressions on the outer surface of injection needles, enhancing adhesion and bonding with the syringe barrel by providing a textured surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If sand-blasting is used to texture the needle surface, then adhesion between needle and syringe barrel is improved, but the process is time-consuming and difficult to apply to small needles
Solution Approach 1:
The patent replaces the mechanical sand-blasting process with a laser-based texturing system. The laser creates microscopic surface features on the needle through optical energy, eliminating the need for mechanical abrasion equipment and enabling faster processing of small needles while maintaining effective surface area for adhesion.
Solution Approach 2:
The patent changes the fundamental parameter of surface texturing from mechanical impact (sand-blasting) to thermal/optical processing (laser). This parameter change enables precise control over surface feature geometry and allows rapid processing without the time constraints of traditional sand-blasting methods.
2Strength
If sand-blasting is used to texture the needle surface, then adhesion between needle and syringe barrel is improved, but accuracy in controlling texturing area and pattern is poor
Solution Approach 1:
The patent replaces the mechanical sand-blasting process with a laser-based texturing system. The laser creates microscopic surface features on the needle through optical energy, eliminating the need for mechanical abrasion equipment and enabling faster processing of small needles while maintaining effective surface area for adhesion.
Solution Approach 2:
The laser texturing system incorporates control mechanisms that allow precise positioning and patterning of surface features. The system can control where texturing is applied and what pattern is formed, providing manufacturing precision that sand-blasting cannot achieve.
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 laser-textured surface improves the adhesion and bonding between the needle and the syringe barrel, enhancing resistance to pull-out forces.
Implementation Method 1
directing lasers from one or more laser sources onto an outer surface of the needle body of each of the one or more injection needles. The lasers form a pattern of depressions in the outer surface of the needle body
Data Source
AI summary
Provided herein is a method for modifying a surface texturing of an injection needle. The method includes positioning one or more injection needles onto a support tool, each of the one or more injection needles comprising a cylindrical needle body having a distal end and a proximal end and defining a lumen therein. The method also includes directing lasers from one or more laser sources onto an outer surface of the needle body of each of the one or more injection needles. The lasers form a pattern of depressions in the outer surface of the needle body of each of the one or more injection needles, to form a textured outer surface on the one or more injection needles.