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Silica-gel coating catheters and production technique thereof

A urinary catheter and silica gel technology, applied in the direction of catheters, coatings, and other medical devices, can solve the problems of waste of manpower and material resources, bacterial infection, and environmental damage, and achieve the effects of avoiding damage, high permeability, and environmental friendliness

Inactive Publication Date: 2009-02-04
扬中金祥乳胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 urinary 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.

Method used

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  • Silica-gel coating catheters and production technique thereof
  • Silica-gel coating catheters and production technique thereof
  • Silica-gel coating catheters and production technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A silicone-coated urinary catheter, which is composed of a tube fork 7, a tube body 8 and a spherical membrane 4 in sequence, wherein the tube fork 7 is composed of a rubber fork 2 and a funnel 1, and one end of the rubber fork 2 meets the funnel 1 At the connection with the tube body 8, the rubber fork 2, the funnel 1 and the tube body 8 form a Y shape, and the other end of the tube body 8 away from the funnel 1 is provided with a drain hole 5, and the tube body 8 is provided with a balloon part 6, The balloon part 6 is located between the drain hole 5 and the funnel 1 and close to the tube body of the drain hole 5, the balloon 4 is provided with an inflation hole 9, and the balloon membrane 4 is set on the balloon inflation hole 9, and the entire urinary catheter The outer surface of the tube is covered with a silicone coating. A rubber stopper 3 is provided on the rubber fork, and the rubber stopper is located at the other end away from the connection between the rub...

Embodiment 2

[0019] A method for preparing a silica gel-coated urinary catheter, the preparation steps are: cleaning the mold: cleaning impurities on the mold at room temperature; impregnating the mold with a coagulant: immersing the mold in the coagulant, taking it out and drying it until no coagulant drips , dry the mold coated with coagulant at 60°C for 20 minutes; latex dipping: dip the dried mold into latex to form the first latex layer on the mold, and the total latex solid mass concentration in the first layer of latex is 48 %; shifting fork and sticking wire: sending the glue wire into the ball capsule position of the catheter through the moving fork sticking process, and then dipping and sealing the wire latex. The total solid mass concentration of latex in the sealing wire latex is 48%, and the skeined wire is sealed in the In the middle of the first layer and the second layer of latex, the dipping time is 50 seconds, and the mold after dipping is dried at 55°C for 1 hour, and the...

Embodiment 3

[0021]A method for preparing a silica gel-coated urinary catheter, the preparation steps are: cleaning the mold: cleaning impurities on the mold at room temperature; impregnating the mold with a coagulant: immersing the mold in the coagulant, taking it out and drying it until no coagulant drips , dry the mold coated with coagulant at 65°C for 20 minutes; latex dipping: dip the dried mold into latex to form the first latex layer on the mold, and the total latex solid mass concentration in the first layer of latex is 50 %; shifting fork and sticking wire: sending the rubber wire into the ball capsule of the catheter through the shifting fork and sticking process, and then dipping and sealing the wire latex. In the middle of the first layer and the second layer of latex, the dipping time is 55 seconds. The mold after dipping is dried at 60°C for 1 hour, and then the product is taken out of the oven and cut holes are used as the inflation holes of the balloon. The part is between ...

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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...

Claims

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Application Information

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IPC IPC(8): A61M39/08A61L29/16A61L29/10
Inventor 吕立忠张建平张玉良
Owner 扬中金祥乳胶制品有限公司
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