CN103831202B - A kind of polymeric catheter process for surface coating - Google Patents
A kind of polymeric catheter process for surface coating Download PDFInfo
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- CN103831202B CN103831202B CN201410072609.XA CN201410072609A CN103831202B CN 103831202 B CN103831202 B CN 103831202B CN 201410072609 A CN201410072609 A CN 201410072609A CN 103831202 B CN103831202 B CN 103831202B
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- support plate
- polymeric catheter
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- 238000000576 coating method Methods 0.000 title claims abstract description 58
- 239000011248 coating agent Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 230000009469 supplementation Effects 0.000 claims abstract description 8
- 238000001802 infusion Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 3
- 210000002435 tendon Anatomy 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 8
- 230000000873 masking effect Effects 0.000 description 8
- 238000005507 spraying Methods 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 3
- 238000003618 dip coating Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009501 film coating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010061218 Inflammation Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002987 primer (paints) Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
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Abstract
The present invention relates to a kind of polymeric catheter process for surface coating, it comprises the steps: first to carry out ultrasonic wave vibration washing to polymeric catheter to be coated, the dirt on removing surface; Then each polymeric catheter is vertically clamping on the second support plate, the length that polymeric catheter stretches out the second support plate is height to be coated; First drive unit drives the first support plate to move downward in immersion reservoir and stops 2-3 second, by the first support plate pull-out after each through-hole surfaces forms independent liquid film; Second drive unit drives that each polymeric catheter is upper and lower in through hole to be moved back and forth; Described second support plate moves back and forth repeatedly, to the requirement reaching coating thickness, stop the second drive unit work; Described liquid supplementation pipe is kept to be 2-2.5ml/s to the fluid infusion velocity in described groove in this process; Polymeric catheter is delivered to the drying process of postorder, after oven dry, namely obtain the cated polymeric catheter of tool.The present invention coordinates special coating process by special coating apparatus, utilizes the surface tension of coating solution to form liquid film, is successively coated in catheter surface, forms the uniform coating of thickness.
Description
Technical field
The present invention relates to the preparation field of medical equipment, specifically refer to a kind of polymeric catheter process for surface coating.
Background technology
Along with the development of medical technology, interventional therapy conduit is widely applied in clinical treatment.Many apparatuses needing short-term or contact with tissue for a long time, if catheter, CVC etc. are when getting involved human body, can rub with the tissue contacted with it, may cause the damage organized thus and then cause the bad reactions such as inflammation.In order to reduce the friction between conduit and tissue, people apply hydrophilic superslide coating to catheter surface.
At present known to polymeric catheter head end carry out hydrophilic superslide coating coating method be dip coating or spraying process.So-called dip coating is all immersed in by polymeric catheter to be coated to fill in the groove of masking liquid, after soaking certain hour, taken out by polymeric catheter, then again flowed back in groove by masking liquid unnecessary on polymeric catheter from groove.Use dip coating, coating layer thickness is difficult to control, and conduit pulls out after soaking from masking liquid, and masking liquid can move downward in the effect of gravity, and conduit more downward part coating layer thickness can be caused larger, and coating layer thickness is uneven.
Spraying process needs to use flush coater, and be first atomized by coating material, then conductive pipe surface spraying, makes clagging at catheter surface.Spraying process in atomizing spraying process, easily cause coating to waste and coating is low at the adhesion-tight degree of catheter surface; Require higher to construction equipment and space enrironment, equipment cost is larger simultaneously.
Summary of the invention
Technical problem to be solved by this invention be for the present situation of prior art provide a kind of equipment investment low, coating material can not be wasted, to construction site and the low and polymeric catheter process for surface coating of coating uniform of environmental requirement.
The present invention solves the problems of the technologies described above adopted technical scheme: this polymeric catheter process for surface coating, is characterized in that comprising coating machine, and described coating machine comprises:
First support plate, described first support plate is provided with multiple through hole, and through-hole diameter is 6 ~ 12 times of conduit diameter to be coated, and the sidewall of each through hole is longitudinally provided with many convex tendons, groove part rounding off between each convex tendon and adjacent convex tendon, and the cross section of each convex tendon is also round and smooth cambered surface; The surface of described first support plate is provided with the groove be connected with each described through hole, and described groove is communicated with liquid supplementation pipe, and described liquid supplementation pipe connects liquid storage container;
Second support plate, described second support plate is provided with the multiple folder holes for clamping to be coated polymeric catheter corresponding with each described through hole;
Described first support plate has the first drive unit driving to move up and down, and described second support plate is driven by the second drive unit and moves up and down;
Reservoir is provided with immediately below described first support plate; Solution to be coated is loaded with in described reservoir; Preferably, the temperature of described solution to be coated is 15-35 DEG C; At this temperature, inter-molecular attraction is stablized; If the too high meeting of temperature causes inter-molecular attraction to weaken, be unfavorable for film forming.
Use described coating machine to carry out polymeric catheter process for surface coating to comprise the steps:
A) first ultrasonic wave vibration washing is carried out to polymeric catheter to be coated, the dirt on removing surface; Preferred cleansing medium is ethanol, and ultrasonic frequency is 40 ~ 60KHz.
B) then each polymeric catheter is placed in the folder hole on the second support plate, make each polymeric catheter vertically clamping on the second support plate, it is mutually concordant and be positioned at 5 ~ 10cm position above the first support plate that each polymeric catheter passes the bottom of the second support plate, and the length that described polymeric catheter stretches out the second support plate is height to be coated;
C) start the first drive unit, described first support plate is moved downward and immerses in described reservoir, stop 2-3 time second, form independent liquid film on the surface of each described through hole; Then the first drive unit moves upward and to be pulled out in described reservoir by described first support plate and to rest on 5 ~ 10cm position, below of each described polymeric catheter;
D) the second drive unit is started, the second support plate is driven to move back and forth, control the movement velocity≤35mm/s of described second support plate, make that each polymeric catheter is upper and lower in each described through hole to be moved back and forth, and each described polymeric catheter is length to be coated through the length exposed after the second support plate;
Described second support plate move back and forth repeatedly after, to each described polymeric catheter on the surface coating stop the second drive unit work after reaching the requirement of coating thickness;
Described liquid supplementation pipe is kept to be 2-2.5ml/s to the fluid infusion velocity in described groove in this process;
E) each described polymeric catheter is taken off from described second support plate, deliver to the drying process of postorder, after oven dry, namely obtain the cated polymeric catheter of tool.
In such scheme, conveniently operate, preferably, described first support plate can be arranged on the first column, and can move up and down along described first column under the driving of described first drive unit; Described second support plate is arranged on the second column, and described second support plate moves up and down relative to along described second column under the driving of described second drive unit; Described second column and described first column be arranged in parallel; Described liquid storage container is spacing on described first column.
As improvement, described second column and described first column support and are arranged on base, and described reservoir is arranged on the upper surface of described base.
The conveniently location of polymeric catheter, can be provided with the clamping device for clamping each described polymeric catheter corresponding with each described folder hole on described second support plate.
Clamping device in such scheme can select prior art as required, and preferably, described clamping device can comprise the multiple box bodys on the upper surface being arranged on described second support plate, and the bottom surface of each box body is provided with the perforation suitable with each self-corresponding folder hole; Relatively be provided with two pieces of limited blocks in described box body, between the side of described limited block and described box body, be provided with spring, in the middle of after two pieces of limited block docking, there is the perforation suitable with described folder hole.
Compared with prior art, the present invention coordinates special coating process by special coating apparatus, utilize the surface tension of coating solution, certain thickness fluid film is formed in the through hole of the first support plate, by moving up and down of the second support plate, make polymeric catheter to be coated through the coated film in through hole, form the film coating of evenly coating at catheter surface; Subsequent thin film coating is by adding in through hole by the coating solution of specified temp with specific flow velocity, makes to possess fluid film in through hole always, and this fluid film in the coating of polymeric catheter surface layer-by-layer, thus forms the uniform polymeric catheter coating of thickness; By reciprocating motion repeatedly, certain thickness coating can be obtained, effectively ensure that uniformity and the uniformity of catheter coatings; And coating reusable edible, save masking liquid, and avoid the waste of masking liquid.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of embodiment of the present invention assembly structure;
Fig. 2 is the perspective view of the second support plate in the embodiment of the present invention;
Fig. 3 is the perspective view of the first support plate in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figure 1 to Figure 3, it comprises the equipment that this polymeric catheter process for surface coating uses:
First support plate 1, first support plate is provided with multiple through hole 11, and the present embodiment is provided with five through holes; The sidewall of each through hole is longitudinally provided with many convex tendons 12; Adjacent convex tendon and groove rounding off between the two, and the surface of convex tendon is also arcuate structure.The minimum diameter of through hole is 40mm.The surface of the first support plate offers groove 13, this groove 13 is all connected with five through holes.This groove is the fluid infusion passage of fluid infusion in each through hole.
Base 2, be the supporting seat of this coating apparatus, the middle part of base 1 is provided with reservoir 21, and the both sides of reservoir are respectively equipped with the first column 3 and the second column 4.Base 2 is provided with the first gauge tap 22 for controlling the first cylinder (not shown) work and the second gauge tap 23 for controlling the second cylinder operation.Second gauge tap 23 has two, and these two the second gauge taps 23 are connected in series, and when only having them to close up, the second cylinder (not shown) just can work simultaneously.
First column 3 is provided with can under external force along the first slide block 5 that the first column 3 slides up and down.First slide block 5 connects the piston rod of the first cylinder.First slide block 5 connects the first support plate 1 by head rod 51.First column 3 is also provided with the support 31 for locating liquid storage container 7.Liquid storage container 7 is spacing on support 31, and the outlet of liquid storage container 7 connects the groove 13 on the first support plate 1 by conduit 8, conduit 8 is provided with flow control valve (not shown).
Head rod 51 is provided with the spacing ring 52 for spacing conduit 8.
Second column 4 is provided with the piston rod that second slide block 6, second slide block 6 that can slide up and down along the second column 4 under external force connects the second cylinder.Second slide block 6 connects the second support plate 9 by the second connecting rod 61.
Second column 4 is also provided with the baffle plate 41 stretching out the length of the second support plate 9 for controlling conduit, this baffle plate 41 can rotate around the second column 4.
Second support plate 9 is provided with the folder hole 91 that multiple confession conduit to be coated passes.Conveniently treat the clamping of coated catheters, the present embodiment is provided with multiple box body 92 on the upper surface of the second support plate 9, and each box body 92 and each folder hole 91 one_to_one corresponding, the bottom surface of box body 92 is provided with the through hole consistent with folder hole 91.Also be provided with two pieces of limited blocks, 93, two pieces of sides that limited block 93 is relative in each box body 92 and be provided with arc notch 94, two pieces of limited blocks 93 dock latter two arc notch and form the perforation consistent with folder hole.Also being provided with two springs 95 in box body 92, conflicts respectively between the inner side edge and limited block 93 of box body in the two ends of spring.The through hole 11 of the first support plate and the folder hole 91 of the second support plate corresponding, suitable with the caliber of conduit to be coated.
Above-mentioned box body 92, limited block 93 and spring 95 form the clamping device of the present embodiment.
Above-mentioned box body also can replace by arranging groove on the second support plate.In the program, the perforation on folder hole and above-mentioned box bottom coincides, and the bottom surface that limited block is arranged on groove is positioned at the top of folder hole.
Be applied to example with what carry out to 14FPVC catheter tip that length is about the hydrophilic superslide coating of about 80mm, the concrete steps using above-mentioned coating apparatus to carry out polymeric catheter face coat are described.
A) be first immersed in ethanol to PVC conduit to be coated, ultrasonic cleaning 8 minutes under 50KHz, the dirt on removing surface.
Then primer coating in the coating of clean 14FPVC catheter surface, obtain 14FPVC precoated shet conduit (not shown), diameter is about 4.7mm.
B), before coating, first need the position of Height Adjustment first support plate relative to the first column of coating according to conduit, the height in the present embodiment between the first support plate and reservoir liquid level is 90cm, is greater than length 80cm to be coated.
Flap shutter 41, makes baffle plate be positioned at the below of the second support plate 9, and the distance controlled between baffle plate and the second support plate is length+the first support plate thickness to be coated, and in the present embodiment, the thickness of the first support plate is 5cm, and the length that conduit exposes to the second support plate is 85cm.
Push the limited block 93 in box body aside, be inserted into by 14FPVC conduit in each folder hole 91 on the second support plate, conduit exposes to the second support plate through perforation and folder hole 91; The length exposed is 85cm.When conduit lower end touches baffle plate 41, unclamp limited block, limited block clamps respective conduit under the action of the spring automatically.Now, each conduit is vertically clamping on the second support plate, and the bottom that each polymeric catheter passes the second support plate is positioned at 5-10cm position above the first support plate.
Outside flap shutter, makes baffle plate depart from and the overlapping, to facilitate moving up and down of the second support plate of the second support plate.
In reservoir, add coating solution, addition is 3/4 of reservoir height, and the temperature controlling solution to be coated is 15-35 DEG C.Annotate in liquid storage container 7 solution to be coated, the temperature controlling the solution to be coated in liquid storage container 7 is 15-35 DEG C.
C) movement travel adjusting the second drive unit is length+5 ~ 10cm to be coated.
Press the first gauge tap, start the first drive unit, drive the first slide block to move downward and make the first support plate immerse in reservoir 21, stop 2-3 second, the solution to be coated in reservoir forms independent liquid film on the surface of each through hole.Then the first drive unit moves upward and to be pulled out in reservoir by the first support plate and to stop original position, i.e. the 5-10cm position, below of each polymeric catheter.
D) turn-on flow rate valve, and the flow velocity controlling solution to be coated in conduit is 2-2.5ml/s, makes the masking liquid in liquid storage container enter groove 13 by conduit, then enters in each through hole, with to continuous supplementation solution to be coated in each through hole.
In conduit, the flow velocity of solution to be coated is to ensure that make-up solution speed is greater than solution consumption speed for criterion, in case the liquid-sheet disintegration in stop-pass hole.
Press two the second gauge tap 23, second cylinder actions drives the second support plate to move down together with conduit simultaneously, makes conduit vertically and at the uniform velocity through the liquid film in through hole 11, controls the second support plate with the constant-velocity motion of≤35mm/s; After downward arrival range, the second drive unit upwards drives the second support plate to be returned to initial position.
And then press two the second gauge taps, repeat above-mentioned action.After 4 circulations like this, obtain thickness uniform coating at catheter surface.
E) open limited block one by one at initial position, each polymeric catheter is taken off from described second support plate, delivers to the drying process of postorder, after oven dry, namely obtain the cated polymeric catheter of tool.This step is prior art.
This polymeric catheter process for surface coating is without the need to external power supply, and required drive is only compressed air, not only energy-conserving and environment-protective, and avoids masking liquid and reveal and the danger such as the equipment leakage short circuit that causes of splash.Being equipped with the first support plate and second support plate of folder hole different-diameter, by changing the first support plate and the second support plate, carrying out the conduit of adaptive different size.
The design of two the second gauge taps, need both hands to operate simultaneously and just can start the second cylinder, guarantee the movement just carrying out the second support plate after operating personnel's both hands all leave working region, when avoiding single switch caused by false hit, crush danger, further increase production security.
Claims (7)
1. a polymeric catheter process for surface coating, is characterized in that comprising coating machine, and described coating machine comprises:
First support plate, described first support plate is provided with multiple through hole, and through-hole diameter is 6 ~ 12 times of conduit diameter to be coated, and the sidewall of each through hole is longitudinally provided with many convex tendons, groove part rounding off between each convex tendon and adjacent convex tendon, and the cross section of each convex tendon is also round and smooth cambered surface; The surface of described first support plate is provided with the groove be connected with each described through hole, and described groove is communicated with liquid supplementation pipe, and described liquid supplementation pipe connects liquid storage container;
Second support plate, described second support plate is provided with the multiple folder holes for clamping to be coated polymeric catheter corresponding with each described through hole;
Described first support plate has the first drive unit driving to move up and down, and described second support plate is driven by the second drive unit and moves up and down;
Reservoir is provided with immediately below described first support plate; Solution to be coated is loaded with in described reservoir;
Use described coating machine to carry out polymeric catheter process for surface coating to comprise the steps:
A) first ultrasonic wave vibration washing is carried out to polymeric catheter to be coated, the dirt on removing surface;
B) then each polymeric catheter is placed in the folder hole on the second support plate, make each polymeric catheter vertically clamping on the second support plate, it is mutually concordant and be positioned at 5 ~ 10cm position above the first support plate that each polymeric catheter passes the bottom of the second support plate, and the length that described polymeric catheter stretches out the second support plate is height to be coated;
C) start the first drive unit, described first support plate is moved downward and immerses in described reservoir, stop 2-3 time second, form independent liquid film on the surface of each described through hole; Then the first drive unit moves upward and to be pulled out in described reservoir by described first support plate and to rest on 5 ~ 10cm position, below of each described polymeric catheter;
D) the second drive unit is started, the second support plate is driven to move back and forth, control the movement velocity≤35mm/s of described second support plate, make that each polymeric catheter is upper and lower in each described through hole to be moved back and forth, and each described polymeric catheter is conduit length to be coated through the length exposed after the second support plate;
Described second support plate move back and forth repeatedly after, to each described polymeric catheter on the surface coating stop the second drive unit work after reaching the requirement of coating thickness;
Described liquid supplementation pipe is kept to be 2-2.5ml/s to the fluid infusion velocity in described groove in this process;
E) each described polymeric catheter is taken off from described second support plate, deliver to the drying process of postorder, after oven dry, namely obtain the cated polymeric catheter of tool.
2. polymeric catheter process for surface coating according to claim 1, it is characterized in that hyperacoustic frequency is 40 ~ 60KHz during step a), cleansing medium is ethanol.
3. polymeric catheter process for surface coating according to claim 1 and 2, is characterized in that the temperature of described solution to be coated is 15-35 DEG C.
4. polymeric catheter process for surface coating according to claim 3, is characterized in that described first support plate is arranged on the first column, and can move up and down along described first column under the driving of described first drive unit; Described second support plate is arranged on the second column, and described second support plate moves up and down relative to along described second column under the driving of described second drive unit; Described second column and described first column be arranged in parallel; Described liquid storage container is spacing on described first column.
5. polymeric catheter process for surface coating according to claim 4, it is characterized in that described second column and described first column support and be arranged on base, described reservoir is arranged on the upper surface of described base.
6. polymeric catheter process for surface coating according to claim 5, is characterized in that described second support plate is provided with the clamping device for clamping each described polymeric catheter corresponding with each described folder hole.
7. polymeric catheter process for surface coating according to claim 6, it is characterized in that described clamping device comprises the multiple box bodys on the upper surface being arranged on described second support plate, the bottom surface of each box body is provided with the perforation suitable with each self-corresponding folder hole; Relatively be provided with two pieces of limited blocks in described box body, between the side of described limited block and described box body, be provided with spring, in the middle of after two pieces of limited block docking, there is the perforation suitable with described folder hole.
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| CN201410072609.XA CN103831202B (en) | 2014-02-28 | 2014-02-28 | A kind of polymeric catheter process for surface coating |
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| CN201410072609.XA CN103831202B (en) | 2014-02-28 | 2014-02-28 | A kind of polymeric catheter process for surface coating |
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| CN103831202B true CN103831202B (en) | 2016-03-23 |
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| CN104920093A (en) * | 2015-06-30 | 2015-09-23 | 巨野县天胜科技兴农种植专业合作社 | Se-enriched soybean planting device and planting method |
| CN106111431A (en) * | 2016-08-21 | 2016-11-16 | 合肥联鑫智能科技有限公司 | Silica gel coating mechanism |
| CN108211090B (en) * | 2018-02-06 | 2023-05-12 | 苏州海维尔医疗器械有限公司 | Dynamic seal liquid storage tank, guide wire hydrophilic coating equipment and coating method thereof |
| CN111282777B (en) * | 2020-03-26 | 2022-07-12 | 苏州微比特自动化有限公司 | Coating and curing production line |
| CN117797976B (en) * | 2023-12-05 | 2024-12-13 | 北京交通大学 | A pipe segment curing agent spraying device and use method thereof |
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|---|---|---|---|---|
| CN101939114A (en) * | 2008-02-08 | 2011-01-05 | 中央硝子株式会社 | Device and method for applying application liquid |
| CN102470386A (en) * | 2009-08-11 | 2012-05-23 | 积水医疗株式会社 | Coating apparatus and liquid substance coating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5756070A (en) * | 1980-09-24 | 1982-04-03 | Mitsubishi Rayon Co Ltd | Method and apparatus for coating |
| JP3983408B2 (en) * | 1999-03-16 | 2007-09-26 | 三菱製紙株式会社 | Application method |
| JP4682428B2 (en) * | 2001-01-30 | 2011-05-11 | Ｎｏｋクリューバー株式会社 | Method for forming a film on the surface of a cylindrical substrate, and coating layer molding machine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101939114A (en) * | 2008-02-08 | 2011-01-05 | 中央硝子株式会社 | Device and method for applying application liquid |
| CN102470386A (en) * | 2009-08-11 | 2012-05-23 | 积水医疗株式会社 | Coating apparatus and liquid substance coating method |
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Effective date of registration: 20240807 Address after: Room 905, 907, Entrepreneurship Building, East Zone, Ningbo Free Trade Zone, Zhejiang Province 315800 Patentee after: NINGBO FREE TRADE ZONE ANJIE MAIDE MEDICAL DEVICES Co.,Ltd. Country or region after: China Patentee after: HANGZHOU HAILVO TECHNOLOGY CO.,LTD. Patentee after: Nanjing sea Ye Electronic Technology Co.,Ltd. Address before: Room 905, 907, Entrepreneurship Building, East Zone, Ningbo Free Trade Zone, Zhejiang Province 315800 Patentee before: NINGBO FREE TRADE ZONE ANJIE MAIDE MEDICAL DEVICES Co.,Ltd. Country or region before: China |
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