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A kind of medical catheter bonding glue and preparation method thereof

A medical catheter and bonding technology, which is applied in the field of medical catheter bonding glue and its preparation, can solve the problems of affecting the performance of the product, the volatilization of the glue solvent is too fast, and the bonding strength is not high enough, so as to improve convenience and lubricity , not easy to scrap effect

Active Publication Date: 2022-08-02
JIANGSU KANGJIN MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Medical catheters need to be bonded with glue during the production process, but as the mainstream adhesive glue currently on the market, SEBS (hydrogenated styrene-butadiene block copolymer) solvent glue is used for bonding medical catheters. , there are usually the following problems: first, the bonding strength is not high enough, and it is easy to damage; second, the bonding part will appear white after being stressed, which will affect the performance of the product; third, the lubrication is not enough after bonding, and the catheter pushes the fitting It is difficult to push after a certain length; Fourth, the glue solvent evaporates too fast and dries quickly, so the pot life is short, and the system tends to become thick, resulting in the glue being scrapped

Method used

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  • A kind of medical catheter bonding glue and preparation method thereof
  • A kind of medical catheter bonding glue and preparation method thereof
  • A kind of medical catheter bonding glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of medical catheter bonding glue, prepare raw material according to the ratio of raw materials given in Table 1, and then prepare the glue according to the following steps:

[0037] (1) Prepare raw materials;

[0038] (2) C5 petroleum resin and hydrogenated rosin glyceride in SEBS, tackifying resin are added in stirring tank successively, mix homogeneously;

[0039] (3) The cyclohexane in the solvent (density is 0.78g / cm 3 ), ethyl acetate (density is 0.902g / cm 3 ) and cyclohexanone (density 0.95g / cm 3 ) is added to the uniformly mixed material in step (2), the temperature of the stirring tank is heated to 60 ° C, and stirred for 30 min, until SEBS and tackifying resin are completely dissolved;

[0040] (4) The mixed solution obtained in step (3) is cooled to room temperature, and then poured into a storage bucket for sealing and preservation.

[0041] In this Example 1, in the glue raw material, the mass percentage of SEBS is 1.04%, and the mass percentage o...

Embodiment 2

[0045] Prepare the raw materials according to the raw material ratios given in Table 1, and prepare the glue according to the following steps:

[0046] (1) Prepare raw materials;

[0047] (2) Add all the raw materials into the plastic bucket in turn, after sealing, stand still at room temperature for 96 hours, and obtain the glue after the raw materials are completely dissolved.

[0048] In this Example 2, in the glue raw material, the mass percentage of SEBS is 1.04%, and the mass percentage of tackifying resin is 3.65%. The mass ratio of SEBS and tackifying resin is 1:3.5, the mass ratio of C5 petroleum resin and hydrogenated rosin glyceride in tackifying resin is 1:1, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in solvent is 15 :1:16.

[0049] The medical catheter adhesive glue obtained in Example 2 is denoted as S2.

[0050] Referring to the national standard GB / T 7123.1-2002 (Determination of the pot life of adhesives), the pot life of S2 is te...

Embodiment 3

[0052] Prepare raw materials according to the raw material ratios given in Table 1, and prepare glue with reference to the preparation method given in Table 1.

[0053]In Example 3, in the glue raw material, the mass percentage of SEBS is 1.05%, and the mass percentage of tackifying resin is 3.15%. The mass ratio of SEBS to tackifying resin is 1:3, the mass ratio of C5 petroleum resin to hydrogenated rosin glyceride in tackifying resin is 1:0.8, and the volume ratio of cyclohexane, ethyl acetate and cyclohexanone in solvent is 15 :1:16.

[0054] The medical catheter adhesive glue obtained in Example 3 is denoted as S3.

[0055] With reference to the national standard GB / T 7123.1-2002 (Determination of the pot life of adhesives), the pot life of S3 is tested, and the test results show that the pot life of S3 is 6h.

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Abstract

The invention discloses a medical catheter bonding glue and a preparation method thereof, belonging to the technical field of medical device glue production. According to the mass percentage, the raw materials of the glue include SEBS 1.03-2.86%, tackifying resin 3.14-10%, and the balance is a solvent; wherein the tackifying resin includes C5 petroleum resin and hydrogenated rosin glyceride, and the solvent includes cyclohexane, ethyl acetate and cyclohexanone. In the glue, a suitable type of tackifying resin is selected to improve the bonding strength of the glue; cyclohexanone is added to the solvent to improve the lubricity of the medical catheter; and the solvent with slower volatilization is selected, which greatly prolongs the pot life of the glue At the same time, the solvent selected in the glue has less side effects on human body and less physical harm to workers.

Description

technical field [0001] The invention belongs to the technical field of medical device glue production, in particular to a medical catheter bonding glue and a preparation method thereof. Background technique [0002] Medical catheters refer to tubular products with medical uses made of medical materials such as PVC (polyvinyl chloride), nylon, polyurethane and silicone rubber. During the application process, medical catheters can be inserted into the human body or used in vitro for disease diagnosis or treat. Common medical catheters include infusion catheters, respiratory catheters, digestive catheters, cardiovascular catheters, urinary catheters, venous retention needle catheters, neurovascular catheters and surgical drainage catheters, which are medical consumables and are used in practical applications. [0003] Medical catheters need to be bonded with glue during the production process, but as the mainstream adhesive glue currently on the market, SEBS (hydrogenated styr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J157/02C09J193/04C09J153/02C09J11/00
CPCC09J157/02C09J193/04C09J11/00C08L2203/02C08L2207/04C08L93/04C08L53/025C08L57/02
Inventor 郭永萍谢立平周勇
Owner JIANGSU KANGJIN MEDICAL INSTR
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