阅读说明：本技术 一种医疗管材的制备方法及医疗管材 (Preparation method of medical tube and medical tube ) 是由 印小婷 于 2021-09-14 设计创作，主要内容包括：本发明公开的属于医疗管材技术领域,具体为一种医疗管材的制备方法及医疗管材,该医疗管材的制备方法的具体步骤流程如下：备料：取聚丙烯20-30份、聚酰胺10-15份、热塑性聚氨酯20-30份和聚四氟乙烯10-15份,备用；加工：首先将聚丙烯、聚酰胺、热塑性聚氨酯和聚四氟乙烯放置到干燥装置的内部,调节干燥装置的温度为10-20摄氏度,持续干燥30-40分钟,干燥完成之后,将聚丙烯、聚酰胺、热塑性聚氨酯和聚四氟乙烯倒入粉碎装置的内部,通过粉碎装置对其进行造粒；融化挤出：将制备的颗粒倒入熔融装置的内部,可以保证在医疗管材后期的使用过程中,医疗管材与人体体液或人体皮肤接触时,不会发生不相容的情况,保证人体健康,使用更加安全。(The invention belongs to the technical field of medical pipes, and particularly relates to a preparation method of a medical pipe and the medical pipe, wherein the preparation method of the medical pipe comprises the following specific steps: preparing materials: taking 20-30 parts of polypropylene, 10-15 parts of polyamide, 20-30 parts of thermoplastic polyurethane and 10-15 parts of polytetrafluoroethylene for later use; processing: firstly, placing polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene into a drying device, adjusting the temperature of the drying device to be 10-20 ℃, continuously drying for 30-40 minutes, pouring the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene into a crushing device after drying is finished, and granulating the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene by the crushing device; melting and extruding: the prepared particles are poured into the melting device, so that the situation of incompatibility can be avoided when the medical tube is contacted with human body fluid or human skin in the later use process of the medical tube, the human health is ensured, and the use is safer.)

1. A preparation method of a medical tube is characterized by comprising the following steps: the preparation method of the medical tube comprises the following specific steps:

preparing materials: taking 20-30 parts of polypropylene, 10-15 parts of polyamide, 20-30 parts of thermoplastic polyurethane and 10-15 parts of polytetrafluoroethylene for later use;

processing: firstly, placing polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene into a drying device, adjusting the temperature of the drying device to be 10-20 ℃, continuously drying for 30-40 minutes, pouring the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene into a crushing device after drying is finished, and granulating the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene by the crushing device;

melting and extruding: pouring the prepared particles into a melting device, adjusting the temperature of the melting device to 80-100 ℃, and pouring all the particles into an extrusion device after the particles of polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene are completely melted to obtain the medical tube;

the process treatment comprises the following steps: placing the prepared medical tubing inside a radio frequency discharge device, treating for 20-30 minutes through a radio frequency discharge process, after the treatment is finished, placing the tubing in a plasma treatment cavity, introducing specified gas into the plasma treatment cavity, standing for 30-40 minutes, taking out, finally placing the tubing in a container, adding excessive organic solution or deionized water into the container to clean the tubing, and after the cleaning is finished, drying to obtain the medical tubing.

2. The method of claim 1, wherein the method comprises the steps of: the extrusion device used a twin-screw extruder, the rotation speed of which was adjusted to 200 and 300 rpm.

3. The method of claim 1, wherein the method comprises the steps of: the particle diameter size that the reducing mechanism processing was produced is 2-3 millimeters.

4. The method of claim 1, wherein the method comprises the steps of: in the process of the radio frequency discharge technology, the discharge pressure needs to be controlled to be 30-60Pa, the discharge time is 3-5 minutes, the discharge power is 200-300W, and the gas flow is 30-50 ml/min.

5. The method of claim 1, wherein the method comprises the steps of: in the process treatment step, the introduced specified gas is one of nitrogen, ammonia or argon.

6. A medical tubing, characterized by: a method of making a medical tubing according to any of claims 1-5.

Technical Field

The invention relates to the technical field of medical pipes, in particular to a preparation method of a medical pipe and the medical pipe.

Background

In the medical field, the use of tubing is very widespread, such as medical catheters, angiographic catheters, urinary catheters, catheter sheaths and catheter tips, etc. Medical tubing is typically made from thermoplastic elastomer materials. With the development of minimally invasive interventional therapy technology, medical interventional tubes are more and more widely applied. In the interventional therapy process, a catheter needs to be safely and effectively delivered to a treatment target position, and the thermoplastic elastomer is a thermoplastic multi-block copolymer and consists of a hard segment and a soft segment. Thermoplastic elastomers have been widely used in biomedical applications because of their good biodegradability, shape memory and biocompatibility.

However, after the existing medical tubing is processed, further process treatment cannot be performed to sterilize the surface of the medical tubing or improve the use quality of the medical tubing, so that the medical tubing is contacted with a human body in the later use process of the medical tubing, incompatibility is easily caused, inflammation is generated, and the health of the human body is influenced.

Disclosure of Invention

The invention aims to provide a preparation method of a medical tube and the medical tube, and aims to solve the problems that after the existing medical tube proposed in the background technology is processed, further process treatment cannot be carried out to sterilize and disinfect the surface of the medical tube or improve the use quality of the medical tube, so that the medical tube is contacted with a human body in the later use process of the medical tube, incompatibility is easily caused, inflammation is generated, and the health of the human body is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a medical tube comprises the following specific steps:

preparing materials: taking 20-30 parts of polypropylene, 10-15 parts of polyamide, 20-30 parts of thermoplastic polyurethane and 10-15 parts of polytetrafluoroethylene for later use;

processing: firstly, placing polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene into a drying device, adjusting the temperature of the drying device to be 10-20 ℃, continuously drying for 30-40 minutes, pouring the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene into a crushing device after drying is finished, and granulating the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene by using the crushing device, wherein the diameter of particles produced by processing the crushing device is 2-3 mm;

melting and extruding: pouring the prepared particles into a melting device, adjusting the temperature of the melting device to be 80-100 ℃, and completely pouring the particles into an extrusion device after the particles of polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene are completely melted, wherein the extrusion device uses a double-screw extruder, and the rotating speed of the double-screw extruder is adjusted to be 200-300rpm, so as to obtain the medical tubing;

the process treatment comprises the following steps: placing the prepared medical tube inside a radio frequency discharge device, treating for 20-30 minutes through a radio frequency discharge process, wherein in the radio frequency discharge process, the discharge pressure needs to be controlled to be 30-60Pa, the discharge time is 3-5 minutes, the discharge power is 200-300W, and the gas flow is 30-50ml/min, after the treatment is finished, placing the tube in a plasma treatment cavity, introducing specified gas into the plasma treatment cavity, standing for 30-40 minutes, in the process treatment step, introducing the specified gas which is one of nitrogen, ammonia or argon, then taking out, finally placing the tube in a container, adding excessive organic solution or deionized water into the container to clean the tube, and after the cleaning is finished, drying to obtain the medical tube.

Preferably, the extrusion device uses a twin-screw extruder, and the rotation speed of the twin-screw extruder is adjusted to 200-300 rpm.

Preferably, the particle diameter size of the particles processed and produced by the crushing device is 2-3 mm.

Preferably, in the process of the process treatment, the discharge pressure needs to be controlled to be 30-60Pa, the discharge time is 3-5 minutes, the discharge power is 200-300W, and the gas flow is 30-50 ml/min.

Preferably, in the step of processing, the introduced specified gas is one of nitrogen, ammonia or argon.

A medical tubing made by the method of making the medical tubing of any of claims 1-5.

Compared with the prior art, the invention has the beneficial effects that:

the medical tube is produced by mixing and processing four materials of polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene, after the processing is finished, the medical tube is further sterilized and disinfected by using process treatment, so that germs carried in some processing processes are prevented from being attached to the surface of the medical tube, the situation of incompatibility can be avoided when the medical tube is in contact with human body fluid or human skin in the later use process of the medical tube, the human health is ensured, and the medical tube is safer to use.

Drawings

Fig. 1 is a flow chart of the steps of the preparation method of the medical tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, the present invention provides a technical solution: a preparation method of a medical tube comprises the following specific steps:

preparing materials: taking 20-30 parts of polypropylene, 10-15 parts of polyamide, 20-30 parts of thermoplastic polyurethane and 10-15 parts of polytetrafluoroethylene for later use;

processing: firstly, placing polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene into a drying device, adjusting the temperature of the drying device to be 10-20 ℃, continuously drying for 30-40 minutes, pouring the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene into a crushing device after drying is finished, and granulating the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene by the crushing device;

melting and extruding: pouring the prepared particles into a melting device, adjusting the temperature of the melting device to 80-100 ℃, and pouring all the particles into an extrusion device after the particles of polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene are completely melted to obtain the medical tube;

the process treatment comprises the following steps: placing the prepared medical tube into a radio frequency discharge device, treating for 20-30 minutes through a radio frequency discharge process, after the treatment is finished, placing the tube into a plasma treatment cavity, introducing specified gas into the plasma treatment cavity, standing for 30-40 minutes, taking out, finally placing the tube into a container, adding excessive organic solution or deionized water into the tube for cleaning the tube, drying the tube after the cleaning is finished to obtain the medical tube, mixing and processing the medical tube into the tube by using four materials of polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene, after the processing is finished, performing further sterilization and disinfection treatment on the medical tube by using process treatment, thereby preventing the surface of the medical tube from being adhered with some germs carried in the processing process, and ensuring the later use process of the medical tube, when the medical tube is contacted with body fluid or skin of a human body, the incompatible condition can not occur, the human health is ensured, and the use is safer.

The extrusion device used a twin-screw extruder, the rotation speed of which was adjusted to 200 and 300 rpm.

The particle diameter size that the reducing mechanism processing was produced is 2-3 millimeters.

In the process of the radio frequency discharge technology, the discharge pressure needs to be controlled to be 30-60Pa, the discharge time is 3-5 minutes, the discharge power is 200-300W, and the gas flow is 30-50 ml/min.

In the process treatment step, the introduced specified gas is one of nitrogen, ammonia or argon.

A medical tubing made by the method of making the medical tubing of any of claims 1-5.

Example 1:

the preparation method of the medical tube comprises the following specific steps:

preparing materials: taking 20 parts of polypropylene, 10 parts of polyamide, 20 parts of thermoplastic polyurethane and 10 parts of polytetrafluoroethylene for later use;

processing: firstly, placing polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene into a drying device, adjusting the temperature of the drying device to be 10 ℃, continuously drying for 30 minutes, pouring the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene into a crushing device after drying is finished, and granulating the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene by the crushing device;

melting and extruding: pouring the prepared particles into a melting device, adjusting the temperature of the melting device to 80 ℃, and pouring all the particles into an extrusion device after the particles of polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene are completely melted to obtain the medical tube;

the process treatment comprises the following steps: placing the prepared medical tubing inside a radio frequency discharge device, treating for 20 minutes through a radio frequency discharge process, after the treatment is finished, placing the tubing in a plasma treatment cavity, introducing specified gas into the plasma treatment cavity, standing for 30 minutes, taking out, finally placing the tubing in a container, adding excessive organic solution or deionized water into the container to clean the tubing, and after the cleaning is finished, drying to obtain the medical tubing;

example 2:

the preparation method of the medical tube comprises the following specific steps:

preparing materials: taking 25 parts of polypropylene, 12.5 parts of polyamide, 25 parts of thermoplastic polyurethane and 12.5 parts of polytetrafluoroethylene for later use;

processing: firstly, placing polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene into a drying device, adjusting the temperature of the drying device to be 15 ℃, continuously drying for 35 minutes, pouring the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene into a crushing device after drying is finished, and granulating the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene by the crushing device;

melting and extruding: pouring the prepared particles into a melting device, adjusting the temperature of the melting device to 90 ℃, and pouring all the particles into an extrusion device after the particles of polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene are completely melted to obtain the medical tube;

the process treatment comprises the following steps: placing the prepared medical tubing inside a radio frequency discharge device, treating for 25 minutes through a radio frequency discharge process, after the treatment is finished, placing the tubing in a plasma treatment cavity, introducing specified gas into the plasma treatment cavity, standing for 35 minutes, taking out, finally placing the tubing in a container, adding excessive organic solution or deionized water into the container to clean the tubing, and after the cleaning is finished, drying to obtain the medical tubing;

example 3:

the preparation method of the medical tube comprises the following specific steps:

preparing materials: taking 30 parts of polypropylene, 15 parts of polyamide, 30 parts of thermoplastic polyurethane and 15 parts of polytetrafluoroethylene for later use;

processing: firstly, placing polypropylene, polyamide, thermoplastic polyurethane and polytetrafluoroethylene into a drying device, adjusting the temperature of the drying device to be 20 ℃, continuously drying for 40 minutes, pouring the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene into a crushing device after drying is finished, and granulating the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene by the crushing device;

melting and extruding: pouring the prepared particles into a melting device, adjusting the temperature of the melting device to be 100 ℃, and pouring all the particles into an extrusion device after the particles of the polypropylene, the polyamide, the thermoplastic polyurethane and the polytetrafluoroethylene are completely melted to obtain the medical tube;

the process treatment comprises the following steps: placing the prepared medical tubing inside a radio frequency discharge device, treating for 30 minutes through a radio frequency discharge process, after the treatment is finished, placing the tubing in a plasma treatment cavity, introducing specified gas into the plasma treatment cavity, standing for 40 minutes, taking out, finally placing the tubing in a container, adding excessive organic solution or deionized water into the container to clean the tubing, and after the cleaning is finished, drying to obtain the medical tubing.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.