Silica-gel coating catheters and production technique thereof

Abstract

The invention provides a catheter with silicone rubber coating and a preparation method thereof. The catheter consists of a tube fork, a tube body and a ball membrane in sequence. The tube fork consists of a rubber fork and a hopper, one end of the rubber fork is jointed with the communication position of the hopper and the pipe body; the rubber fork, the hopper and the tube body form a Y shape; one end of the tube body which is far from the hopper is equipped with a liquid outlet, and the tube body is equipped with a saccule part which is positioned between the liquid outlet and the hopper and is adjacent to the tube body of the liquid outlet. The saccule part is equipped with an aerating hole, and the ball membrane is sheathed on the aerating hole of the saccule; the outer surface of the tube body of the catheter is coated by the silicone rubber coating. The surface of the catheter coated with the silicone rubber coating is smooth, thus friction with urethra can be reduced, the insertion is convenient and comfortable, injuries on urethra or urinary bladder can be avoided, risks of bacterial infection and necrosis can be reduced, and pains or guide hole blockage caused by drawing of salt incrustation that is resulted from deposition of solid salt in the end head or the cavity of the guide pipe can be reduced.

Description

1. Technical field

[0001] The invention belongs to the technical field of medical devices, in particular to a silicone-coated urinary catheter and a production process thereof. 2. Background technology

[0002] Prior art: currently there are three types of urinary catheters produced in the market: short-term indwelling, mid- and long-term indwelling, and short-term or repeated male external urinary catheters, which are usually made of natural rubber latex. Because natural latex contains proteins, polysaccharides and other substances are prone to allergies to the human body, causing the risk of bacterial infection and necrosis. In addition, in order to achieve a smooth surface of the catheter made of natural latex, domestic manufacturers now use surface chlorination treatment, a primitive and backward treatment method that seriously affects environmental protection, which not only wastes a lot of manpower and material resources, but also damages the environment. 3. Contents...

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