| Application of Histogram and Normal Distribution Diagram in Data Analysis of Double Closed-loop Control Extrusion for Extension Tube of Central Venous Catheter |
| Received:March 19, 2020 Revised:March 19, 2020 |
| DOI：10.12136/j.issn.1000-890X.2021.03.0223 |
| Key Words: double closed-loop control technology；extension tube of central venous catheter；histogram；normal distribution；extrusion stability；outer diameter |
| Author Name | Affiliation | E-mail | | CHENG Lingling* | Henan Tuoren Research Institute of Medical Devices Co.,Ltd | 578470430@qq.com | | WEI Yongfei | Henan Tuoren Research Institute of Medical Devices Co.,Ltd | | | WANG Guogao | Henan Tuoren Research Institute of Medical Devices Co.,Ltd | | | NIU Kaibo | Henan Tuoren Research Institute of Medical Devices Co.,Ltd | | | LIU Zhen | Henan Tuoren Research Institute of Medical Devices Co.,Ltd | |
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| Abstract: |
| Taking the extension tube of the central venous catheter as the test product，the double closed-loop control technology was applied to the domestic ordinary medical extruder.The test data of the outer diameter of the extension tube of the central venous catheter was analyzed by the extrusion analysis method，and then by the histogram and normal distribution diagram.The results showed that the double closed-loop control technology could improve the extrusion stability of the extension tube of central venous catheter. |
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