Super-slip guide wire outer wrapped layer solid solution molding device and wrapping method thereof

Abstract

The invention discloses a super-slip guide wire outer wrapped layer solid solution molding device including a wrapping mold, a wrapping material supply device, a variable speed traction device and a cooling device; a molding channel for a core wire to pass through and a melt runner intersected with the molding channel are formed on the wrapping mold; the wrapping material supply device is used forproviding a wrapping material melt for the wrapping mold; the variable speed traction device is used for pulling a core wire out from the molding channel at different speeds according to the diametersizes of the core wire in different regions, wherein the core wire passes through the molding channel and is coaxial with a second molding channel of the molding channel; the cooling device is used for cooling the core wire removed out of the wrapping mold. The core wire is wrapped tightly by a solid solution way, so slipping is not easy, a head end of the core wire is prevented from puncturing the outer wrapping layer, and the risk of scrapping a chamber channel by a guide wire is reduced; at the same time, with adopting of the variable speed traction way, different-diameter regions of the core wire have more fit wrapping time and wrapping material melt amount, and uniform, smooth and reliable outer diameter of the guide wire after wrapping can be guaranteed.

Description

technical field [0001] The invention relates to the field of guide wire processing, in particular to a super-smooth guide wire outer coating layer solid solution forming equipment and a coating method thereof. Background technique [0002] As emerging medical advances, minimally invasive interventional therapy technology and endoscopic technology have been widely developed in recent years. The process is to super-selectively send interventional medical devices through naturally existing blood vessels or internal lumens under the supervision of medical imaging equipment. It is an important technology and method for diagnosis and treatment that reaches many important organs and parts of the human body, such as the heart, liver, brain, kidney, digestive system, and reproductive system. It has the advantages of no surgery, less trauma, and relatively low medical expenses. [0003] In the process of interventional and endoscopic diagnosis and treatment, the guide wire is an impor...

AI Technical Summary

Problems solved by technology

[0009] Due to the different outer diameters of the support section, the transition section and the head end of the guide wire core wire, the gap in the mold cavity is different, and the extrusion volume is different, resulting in the different outer diameters of the guide wire transition section and the head end after coating, which cannot reach "Smoothness" requirements to the guide wire

Images