Permeable steel wire pipe and preparation method thereof

Abstract

The invention relates to a water-permeable steel wire pipe and a preparation method thereof, and belongs to the technical field of medical instruments, the water-permeable steel wire pipe comprises a spring steel wire and a sizing material, the spring steel wire is coated with the sizing material to form a wavy pipe with two concave surfaces, the wavy pipe has the radian of 170 degrees and is used for increasing the surface area of the pipe wall, more channels for rapidly seeping water vapor are provided, and the middle is used for seeping water molecules; in the ventilation process, the pressure in the middle of the pipe is larger than the external pressure, so that seeping water vapor is quickly diffused into the air. The medical steel wire is adopted as a stent surface film covering material, the thickness of the tube wall is 0.13 mm + / -0.05 mm, the specific gravity is light, the tube wall can rapidly permeate water and is not prone to being bent, ventilation is not blocked, water vapor in a pipeline can permeate the tube wall to be discharged into air in time, condensate water is not generated, the workload of clinical medical staff is reduced, and the use risk coefficient is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a water-permeable steel wire tube and a preparation method thereof. Background Art

[0002] Currently, most oxygen tubes on the market are made of PVC material, which has a relatively high specific gravity, thick tube walls, and is waterproof. It is easy to bend and block ventilation. When used clinically, medical staff need to remove condensed water from breathing in a timely manner, which is a large workload and has a high risk factor. Summary of the Invention

[0003] The object of the present invention is to provide a water-permeable steel wire pipe and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A permeable steel wire pipe, comprising:

[0006] Spring steel wire; the spring steel wire is a medical steel wire, the diameter of the spring steel wire is 0.4 mm, and the pitch is 1.3±0.3;

[0007] The rubber material is coated on the outside of the spring steel wire, with a wall thickness of 0.2mm. The film thickness between the spring steel wire pitches is less than the diameter of the steel wire, forming a two-sided concave wave tube with a 170-degree arc, which is used to increase the surface area of ​​the tube wall and provide more channels for rapid water vapor seepage. The middle is used for water molecule seepage. During the ventilation process, the pressure in the middle of the tube is greater than the external pressure, so that the seeped water vapor quickly diffuses into the air;

[0008] The rubber compound comprises the following raw materials in parts by weight: 20 parts of hydrogenated styrene-butadiene block copolymer, 1 part of polyolefin elastomer, 10 parts of cyclohexanone, and 69 parts of tetrahydrofuran;

[0009] The preparation method comprises the following steps:

[0010] Prepare the rubber material and send it to the rubber tank for use;

[0011] Hang the spring wire and immerse it in the glue pool for 30 seconds;

[0012] Take out the spring wire and let it stand for 30 seconds;

[0013] Dry the steel wire spring with the rubber for 30 minutes;

[0014] Repeat the above steps until the wall thickness is required;

[0015] The preparation method requires that the workshop environment reaches 100,000 grade. A horizontal temperature layer is set at a height of 10 cm above the liquid surface of the glue pool, and the temperature is 25±2℃. A soft shaping pipe is used in the temperature control section to connect the cold air and supply it in a ring shape.

[0016] Preferably, the rubber compound further comprises a defoamer, and the amount of the defoamer added is 1% by weight of the remaining raw materials.

[0017] Preferably, when preparing the rubber compound, the raw materials are added into a disperser according to weight ratio and fully kneaded to form the rubber compound.

[0018] Preferably, the spring steel wire is hung on the cantilever through a hanger and immersed in the glue pool.

[0019] Preferably, the spring steel wire is immersed in the glue pool for 28-32 seconds.

[0020] Preferably, the steel wire spring is left to stand for 28-32 seconds after being taken out.

[0021] Preferably, the drying is carried out by placing the product into an oven for 25-35 minutes.

[0022] Compared with the existing technology, the beneficial effects of the present invention are: medical steel wire is used as the surface coating material of the stent, the tube wall thickness is 0.13mm±0.05mm, the specific gravity is light, the tube wall can quickly permeate water, will not be easily bent, will not block the ventilation, and the water vapor in the pipeline can be discharged into the air in time through the tube wall without generating condensation water, thereby reducing the workload of clinical medical staff and greatly reducing the risk factor of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is the equipment diagram for the production of permeable steel wire pipe;

[0025] Figure 2 This is the finished product picture of the permeable steel wire pipe;

[0026] Figure 3 This is the pipe wall structure diagram of the permeable steel wire pipe.

[0027] In the picture: A-servo motor, B-operation panel, C-support column, D-cantilever, E-hanger, F-spring wire, G-glue tank, H-machine table. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] Example 1

[0031] A permeable steel wire pipe, comprising:

[0032] Spring steel wire;

[0033] The rubber compound is coated on the outside of the spring steel wire, and the rubber compound comprises the following raw materials in parts by weight:

[0034] 2.0 kg of hydrogenated styrene-butadiene block copolymer, 0.1 kg of polyolefin elastomer, 1.0 kg of cyclohexanone, and 6.9 kg of tetrahydrofuran.

[0035] A method for preparing a water-permeable steel wire pipe comprises the following steps:

[0036] Prepare the rubber compound by adding the raw materials into the disperser according to the weight ratio and kneading them thoroughly to form the rubber compound, and then send it to the rubber tank for use;

[0037] Hang the spring wire on the cantilever through the hanger and immerse it in the glue pool for 30 seconds;

[0038] Take out the spring wire and let it rest for 30 seconds;

[0039] Place the steel wire spring with the adhesive in an oven and dry it for 30 minutes;

[0040] Repeat the above steps until the wall thickness is required;

[0041] The preparation method requires that the workshop environment reaches 100,000 level, and a horizontal temperature layer is set at 10 cm above the liquid level of the glue pool, with a temperature of 25°C. Otherwise, the liquid surface will form a crust, resulting in uneven thickness of the pipe wall and causing the water permeability to fail to meet the standard. Soft shaping pipes are used in the temperature control section to connect the cold air and supply it in a ring shape.

[0042] The equipment used in the above embodiments is as follows Figure 1As shown, during preparation, the spring steel wire F is hung on the hanger E. When immersed, the operation panel B is started, and the servo motor A drives the support column C to descend, thereby moving the hanger E and the spring steel wire F downward through the cantilever D, so that the spring steel wire F is immersed in the glue pool G on the machine plate H until the upper end of the spring steel wire F is completely submerged in the glue in the glue pool G; after the immersion is completed, the operation panel B is started, and the servo motor A drives the support column C to rise, so that the lower end of the spring steel wire F is completely moved out of the glue in the glue pool G; this is repeated until the wall thickness meets the requirements.

[0043] Preferably, the spring steel wire is a medical steel wire with a designed pitch of 1.3±0.3, and the spring steel wire is coated with a film. The film thickness between the spring steel wire pitches is less than the diameter of the steel wire 0.4mm, and the wall thickness is 0.2mm, forming a wave tube with concave sides and a 170-degree arc. The concave structure increases the surface area of ​​the tube wall, providing more channels for rapid seepage of water vapor, and the middle is particularly thin, which makes it more convenient for water molecules to seep out. During ventilation, the pressure in the middle of the tube is greater than the external pressure, so that the seeped water vapor can quickly diffuse into the air and will not form water droplets hanging on the outer tube wall. Such a structure is beneficial to the strength of the film on the surface of the tube body.

[0044] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] It should be noted that the components mentioned in the above embodiments are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0047] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A permeable steel wire pipe, characterized in that: include: Spring steel wire; the spring steel wire is a medical steel wire, the diameter of the spring steel wire is 0.4 mm, and the pitch is 1.3±0.3; The rubber material is coated on the outside of the spring steel wire, with a wall thickness of 0.2mm. The film thickness between the spring steel wire pitches is less than the diameter of the steel wire, forming a two-sided concave wave tube with a 170-degree arc, which is used to increase the surface area of ​​the tube wall and provide more channels for rapid water vapor seepage. The middle is used for water molecule seepage. During the ventilation process, the pressure in the middle of the tube is greater than the external pressure, so that the seeped water vapor quickly diffuses into the air; The rubber compound comprises the following raw materials in parts by weight: 20 parts of hydrogenated styrene-butadiene block copolymer, 1 part of polyolefin elastomer, 10 parts of cyclohexanone, and 69 parts of tetrahydrofuran; The preparation method comprises the following steps: Prepare the rubber material and send it to the rubber tank for use; Hang the spring wire and immerse it in the glue pool for 30 seconds; Take out the spring wire and let it stand for 30 seconds; Dry the steel wire spring with the rubber for 30 minutes; Repeat the above steps until the wall thickness is required; The preparation method requires that the workshop environment reaches 100,000 grade. A horizontal temperature layer is set at a height of 10 cm above the liquid surface of the glue pool, and the temperature is 25±2℃. A soft shaping pipe is used in the temperature control section to connect the cold air and supply it in a ring shape.

2. The water-permeable steel wire pipe according to claim 1, characterized in that: The rubber compound further comprises a defoamer, and the amount of the defoamer added is 1% of the weight of the remaining raw materials.

3. The water-permeable steel wire pipe according to claim 1, characterized in that: When preparing the rubber compound, the raw materials are added into a disperser according to the weight ratio and fully kneaded to form the rubber compound.

4. The water-permeable steel wire pipe according to claim 1, characterized in that: The spring steel wire is hung on the cantilever through a hanger and immersed in the glue pool.

5. The water-permeable steel wire pipe according to claim 1, characterized in that: The immersion time of the spring steel wire in the glue pool is 28-32s.

6. The water-permeable steel wire pipe according to claim 1, characterized in that: The steel wire spring is left to stand for 28-32 seconds after being taken out.

7. The water-permeable steel wire pipe according to claim 1, characterized in that: The drying step is to put the product into an oven for 25-35 minutes.

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