A coating device for the surface of polymer catheter

Abstract

The invention relates to a coating device used for a polymer conduit surface. The coating device is characterized in that: the coating device comprises a first support plate; the first support plate is provided with a plurality of through holes and a groove; the first support plate is connected to a first support pillar through a first driving mechanism; a liquid storage tank containing a coating liquid is disposed right below the first support plate; a second support pillar is disposed in parallel with the first support pillar; a second support plate is disposed at the second support pillar through a second driving mechanism; the second support plate is provided with a plurality of limiting holes used for limiting a conduit to be coated; the second support plate is provided with a clamping and fixing device used for positioning the conduit to be coated; the second support pillar is also provided with a baffle plate used for controlling the length penetrating through the second support plate of the conduit, and the baffle plate is rotatablely connected to the second support pillar. A novel coating method is provided. The thickness of the coating is uniform. The coating has strong adhesive force with the surface of the conduit. Waste of the coating liquid is avoided. The coating process is free of contamination to the inner wall of the conduit, thus guaranteeing production sanitation and safety.

Description

technical field [0001] The invention relates to a coating device for the surface of a polymer conduit. Background technique [0002] At present, the known method of coating the hydrophilic super-slip coating on the polymer guide tip is the dip coating method or the spray coating method. For the dip coating method, the thickness of the coating is difficult to control, and the catheter is pulled out from the coating solution after soaking. The coating liquid will move downward under the action of gravity, which will cause the thickness of the coating to increase as the catheter goes down. The coating cannot be coated evenly, and the thickness is difficult to control. Spraying sprays the coating material and adheres to the surface of the catheter , but this kind of coating method is easy to cause waste of coating and low adhesion during the atomization spraying process, and has high requirements for equipment and site environment, and the equipment cost is relatively high. Co...

AI Technical Summary

Problems solved by technology

[0002] At present, the known method of coating the hydrophilic super-slip coating on the polymer guide tip is the dip coating method or the spray coating method. For the dip coating method, the thickness of the coating is difficult to control, and the catheter is pulled out from the coating solution after soaking. The coating liquid will move downward under the action of gravity, which will cause the thickness of the coating to increase as the catheter goes down. The coating cannot be coated evenly, and the thickness is difficult to control. Spraying sprays the coating material and adheres to the surface of the catheter , but this kind of coating method is easy to cause waste of coating and low adhesion during the atomization spraying process, and has high requirements for equipment and site environment, and the equipment cost is relatively high

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