Analysis of design scheme and manufacturing process of laser-cut 316L medical catheters
10.19745/j.1003-8868.2024005
- VernacularTitle:激光切割316L医用导管的设计方案及制造工艺分析
- Author:
Jia-Wei YU
1
;
Zheng-Dong CHEN
;
Xiao-Yan SHI
Author Information
1. 丹源医学科技(杭州)有限公司,杭州 310023
- Keywords:
medical catheter;
laser cut;
interrupted spiral cut;
straight spiral cut;
oblique spiral cut
- From:
Chinese Medical Equipment Journal
2024;45(1):31-36
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the manufacturing process and performance of laser-cut 316L medical catheters based on catheter designs with different cutting methods.Methods Two design schemes of straight and oblique spiral cut were proposed under interrupted spiral cut pattern.Straight and oblique spiral cut medical catheters were obtained with desired laser parameters,cutting speed and focus position of the laser cutting machine,oxygen as the auxiliary gas and nitric acid and hydrofluoric acid as the acid cleaning solution for the post-treatment process,which were compared with Direxion torqueable microcatheter and tested for traceability,torsion control and tensile strength.Results Laser-cut 316L medical catheters were less likely to hurt blood vessels for its advantages over Direxion torqueable microcatheter in surface brightness and roundness of grooved edges,while Direxion torqueable microcatheter behaved better in intensity and width uniformity of grooves and regularity of semi circles at ends of grooves.Straight spiral cut medical catheters had the traceability,torsion control and tensile strength increased by 50％,22％and 33％respectively when compared with oblique spiral cut catheters.Conclusion Laser cutting parameters and post-treatment process are the main factors affecting the appearance and size of laser cut medical catheters,and also of importance for improving the qualified rate of product processing and assembly.The catheter cutting design scheme is also a key element influencing the physical properties of medical catheters.[Chinese Medical Equipment Journal,2024,45(1):31-36]
