CN110404120A - A kind of preparation method of front end softening catheter - Google Patents
A kind of preparation method of front end softening catheter Download PDFInfo
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- CN110404120A CN110404120A CN201910686798.2A CN201910686798A CN110404120A CN 110404120 A CN110404120 A CN 110404120A CN 201910686798 A CN201910686798 A CN 201910686798A CN 110404120 A CN110404120 A CN 110404120A
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- catheter
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- softening
- rubber cement
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- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000004568 cement Substances 0.000 claims abstract description 27
- 229920001971 elastomer Polymers 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 230000001954 sterilising effect Effects 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 230000006837 decompression Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000000178 monomer Substances 0.000 claims abstract description 6
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 6
- 238000010792 warming Methods 0.000 claims abstract description 6
- 239000003999 initiator Substances 0.000 claims abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 34
- 239000004800 polyvinyl chloride Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 6
- 238000013007 heat curing Methods 0.000 claims description 5
- -1 ester peroxide Chemical class 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 2
- 229920000126 latex Polymers 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims 1
- 241000894006 Bacteria Species 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000002485 urinary effect Effects 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 238000002627 tracheal intubation Methods 0.000 abstract description 9
- 230000006378 damage Effects 0.000 abstract description 5
- 208000019206 urinary tract infection Diseases 0.000 abstract description 4
- 239000008280 blood Substances 0.000 abstract description 3
- 210000004369 blood Anatomy 0.000 abstract description 3
- 210000004400 mucous membrane Anatomy 0.000 abstract description 3
- 210000003708 urethra Anatomy 0.000 abstract description 3
- 210000002700 urine Anatomy 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 description 7
- 238000005538 encapsulation Methods 0.000 description 5
- 238000001723 curing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 210000004877 mucosa Anatomy 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 206010006784 Burning sensation Diseases 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/04—Macromolecular materials
- A61L29/041—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/08—Materials for coatings
- A61L29/085—Macromolecular materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/18—Modification of implant surfaces in order to improve biocompatibility, cell growth, fixation of biomolecules, e.g. plasma treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2420/00—Materials or methods for coatings medical devices
- A61L2420/02—Methods for coating medical devices
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention belongs to medical instruments fields, disclose a kind of preparation method of front end softening catheter, comprising the following steps: (1) catheter is cleaned, it is dry；(2) initiator and polyvinyl monomer are mixed, are warming up to 50 DEG C -60 DEG C, cooling, decompression discharges, then carries out alkali process, and centrifugal filtration is to get liquid PVC rubber cement；(3) liquid PVC rubber cement is sprayed to the inner surface of catheter front end；(4) the liquid PVC rubber cement for being attached to the inner surface of catheter front end is solidified, sterilizing softens catheter to get front end.Catheter of the invention makes the design of conduit front and back end nonhomogeneous hardness using softening tube body, make conduit in insertion front end because softer with good guiding performance, it is intubated more easy and smooth, damage when reducing intubation to mucous membrane of urethra, reduces blood urine and urinary tract infection risk caused by intubation.
Description
Technical field
The present invention relates to the preparation methods of medical instruments field more particularly to a kind of front end softening catheter.
Background technique
Medical urethral catheter is one of clinical most common medical equipment, though it has a wide range of applications, prior art plastics
(PVC) single-chamber catheter, front end rear end hardness is the same, and quality is harder, and coefficient of friction is higher (0.2903), easily to patient when intubation
Mucous membrane of urethra causes to damage, and patient often occur apparent burning sensation and feeling of pain in tube drawing, Yi Yinqi mucosa injury, out
Existing blood urine, urinary tract infection and other tissue infection problems.Tradition reply catheter causes the method for infection such as: shortening urethral catheterization tube body
Interior indwelling time, periodic replacement；Reinforce hospital to Related Nursings such as catheters；Cooperation antibiotic etc take preventing or
Treat urinary tract infections etc..The above method not only aggravates patient economy burden and physical pain, also increases treatment time and occupies
Hospital's vast resources.
Therefore, it is urgent to provide a kind of skin-friction coefficient is small, the urethral catheterization of intubation and all easy and convenient front end softening of tube drawing
The preparation method of pipe.
Summary of the invention
The purpose of the present invention is to provide a kind of skin-friction coefficient is small, intubation and all easy and convenient front end softening of tube drawing
Catheter preparation method.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of preparation method of front end softening catheter, comprising the following steps:
(1) catheter pre-processes: catheter is cleaned, it is dry；
(2) preparation of liquid PVC rubber cement: initiator and polyvinyl monomer are mixed, and are warming up to 50 DEG C -60 DEG C, cold
But, decompression discharging, then alkali process is carried out, centrifugal filtration is to get liquid PVC rubber cement；
(3) it sprays liquid PVC rubber cement: liquid PVC rubber cement is sprayed to the inner surface of catheter front end；
(4) catheter front end curing of coatings: the liquid PVC rubber cement for being attached to the inner surface of catheter front end is consolidated
Change, sterilizing softens catheter to get front end.
Preferably, in step (1), the material for preparing of the catheter is in polyvinyl chloride, latex, silicon rubber and polyurethane
One or more.
It is highly preferred that the catheter prepares the polyvinyl chloride that material is plasticizer loading 50-60% in step (1).
Preferably, in step (1), the cleaning process is successively to clean 10-30 minutes, ethyl alcohol cleaning by distilled water
30-60 minutes and injection water ultrasonic cleaning 15-25 minutes.
It is highly preferred that the temperature of the distilled water cleaning is 40 DEG C -65 DEG C, the mass percent of the ethyl alcohol is 60-
75%.
Preferably, in step (1), the drying is carried out with baking oven, and the time of the drying is 10-30 minutes.
Preferably, in step (2), it is different that the initiator is selected from two carbonic ester peroxide, acyl class peroxide, azo two
One or more of butyronitrile and azobisisoheptonitrile.
Preferably, in step (2), the cooling is using 1 DEG C of -5 DEG C of water；The decompression is declined by 0.7-1.0MPa
To 0.3-0.45MPa.
Preferably, in step (2), the temperature of the alkali process is 28 DEG C -40 DEG C, time 2-4h.
Preferably, in step (2), the hardness of the liquid PVC rubber cement is 50-60 degree.
Preferably, in step (4), the sterilizing is using ethylene oxide.
Preferably, in step (4), the cured mode is heat cure；The solidification temperature is 120 DEG C -180 DEG C, when
Between be 30-60min.
A kind of front end softening catheter, the front end softening catheter are made by the preparation method.
The present invention also provides another methods, comprising the following steps:
(1) through squeezing pipe, Pipe Cutting, drilling technology, the polyvinyl chloride conduit of plasticizer loading 50-60% is prepared；
(2) polyvinyl chloride conduit is hung, then rear end is put into the deionized water that water temperature is 40 DEG C -65 DEG C and impregnates 30-
60 minutes；
(3) only 60-75% concentration ethanol solution is quickly immersed in rear end to the polyvinyl chloride conduit after impregnating deionized water, leaching
Bubble time 30-120 minutes obtains the polyvinyl chloride conduit that rear end hardness is 65-70 degree；
(4) polyvinyl chloride conduit is taken out, is sprayed with deionized water, then dry surface moisture；
(5) polyvinyl chloride conduit is tested, qualified encapsulation sterilizing.
The method have the benefit that:
Catheter of the invention makes the design of conduit front and back end nonhomogeneous hardness, catheter front end 2-10cm using softening tube body
Place's hardness is 50-60 degree, and rear end catheter hardness is 65-70 degree, leads conduit front end in insertion with good because softer
Tropism, make be intubated more easy and smooth, damage when reducing intubation to mucous membrane of urethra, reduce be intubated caused by blood urine with
Urinary tract infection risk, the pain of patient when alleviating clinical intubation.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by embodiment, to the present invention into
Row is further described.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
In limiting the scope of the invention.
Embodiment 1
A kind of preparation method of front end softening catheter, comprising the following steps:
(1) it pre-processes: catheter successively passes through to 50 DEG C of distilled water cleans 30 minutes, 75% ethyl alcohol cleans 60 minutes
After twenty minutes with injection water ultrasonic cleaning, it is dried 20 minutes in an oven after cleaning；
(2) preparation of liquid PVC rubber cement: azobisisoheptonitrile and polyvinyl monomer are mixed, are warming up to 50 DEG C -60
DEG C, decompression discharging cooling with 5 DEG C of water, then alkali process is carried out, centrifugal filtration is to get liquid PVC rubber cement；
(3) spraying of liquid PVC rubber cement: the liquid PVC that the inner surface coating thickness to catheter front end is 300-400nm
Rubber cement；
(4) catheter front end curing of coatings: at 150 DEG C of temperature, before catheter will be attached to by the way of heat cure
The liquid PVC rubber cement of the inner surface at end is solidified, and the time is 45 minutes；
(5) single-chamber catheter front end is tested, qualified encapsulation sterilizing.
Embodiment 2
A kind of preparation method of front end softening catheter, comprising the following steps:
(1) it pre-processes: catheter successively passes through to 50 DEG C of distilled water cleans 30 minutes, 75% ethyl alcohol cleans 60 minutes
After twenty minutes with injection water ultrasonic cleaning, it is dried 20 minutes in an oven after cleaning；
(2) preparation of liquid PVC rubber cement: azobisisoheptonitrile and polyvinyl monomer are mixed, are warming up to 50 DEG C -60
DEG C, decompression discharging cooling with 5 DEG C of water, then alkali process is carried out, centrifugal filtration is to get liquid PVC rubber cement；
(3) spraying of liquid PVC rubber cement: the liquid PVC that the inner surface coating thickness to catheter front end is 200-300nm
Rubber cement；
(4) catheter front end curing of coatings: at 130 DEG C of temperature, before catheter will be attached to by the way of heat cure
The liquid PVC rubber cement of the inner surface at end is solidified, and the time is 40 minutes；
(5) single-chamber catheter front end is tested, qualified encapsulation sterilizing.
Embodiment 3
A kind of preparation method of front end softening catheter, comprising the following steps:
(1) it pre-processes: catheter successively passes through to 50 DEG C of distilled water cleans 30 minutes, 75% ethyl alcohol cleans 60 minutes
After twenty minutes with injection water ultrasonic cleaning, it is dried 20 minutes in an oven after cleaning；
(2) preparation of liquid PVC rubber cement: azobisisoheptonitrile and polyvinyl monomer are mixed, are warming up to 50 DEG C -60
DEG C, decompression discharging cooling with 5 DEG C of water, then alkali process is carried out, centrifugal filtration is to get liquid PVC rubber cement；
(3) spraying of liquid PVC rubber cement: the liquid PVC that the inner surface coating thickness to catheter front end is 100-200nm
Rubber cement；
(4) catheter front end curing of coatings: at 140 DEG C of temperature, before catheter will be attached to by the way of heat cure
The liquid PVC rubber cement of the inner surface at end is solidified, and the time is 60 minutes；
(5) single-chamber catheter front end is tested, qualified encapsulation sterilizing.
Comparative example 1
A kind of preparation method of catheter, comprising the following steps:
(1) it pre-processes: catheter successively passes through to 50 DEG C of distilled water cleans 30 minutes, 75% ethyl alcohol cleans 60 minutes
After twenty minutes with injection water ultrasonic cleaning, it is dried 20 minutes in an oven after cleaning；
(2) catheter is tested, qualified encapsulation sterilizing.
Front end obtained by embodiment 1-3 and comparative example 1 is softened into catheter, is tested for the property, as a result such as 1 institute of table
Show:
Table 1
The result shows that the skin-friction coefficient of the present embodiment is reduced to 0.035-0.039, because rubbing when reducing clinical intubation
Mucosa injury and patient cannula's discomfort phenomenon caused by wiping coefficient is excessively high, the pain of patient when alleviating clinical intubation.
Claims (10)
1. a kind of preparation method of front end softening catheter, which comprises the following steps:
(1) catheter is cleaned, it is dry；
(2) initiator and polyvinyl monomer are mixed, are warming up to 50 DEG C -60 DEG C, cooling, decompression discharges, then carries out at alkali
Reason, centrifugal filtration is to get liquid PVC rubber cement；
(3) liquid PVC rubber cement is sprayed to the inner surface of catheter front end；
(4) the liquid PVC rubber cement for being attached to the inner surface of catheter front end is solidified, sterilizing softens urethral catheterization to get front end
Pipe.
2. the preparation method of softening catheter in front end according to claim 1, which is characterized in that described to lead in step (1)
The material for preparing of urinary catheter is one or more of polyvinyl chloride, latex, silicon rubber and polyurethane.
3. the preparation method of softening catheter in front end according to claim 1, which is characterized in that described clear in step (1)
Washing journey is successively to clean 10-30 minutes, ethyl alcohol cleaning 30-60 minutes and injection water ultrasonic cleaning 15-25 by distilled water
Minute.
4. the preparation method of softening catheter in front end according to claim 1, which is characterized in that described dry in step (1)
Dry is to carry out in an oven, and the time of the drying is 10-30 minutes.
5. the preparation method of softening catheter in front end according to claim 3, which is characterized in that described to draw in step (2)
It sends out agent and is selected from one of two carbonic ester peroxide, acyl class peroxide, azodiisobutyronitrile and azobisisoheptonitrile or several
Kind.
6. the preparation method of softening catheter in front end according to claim 1, which is characterized in that described cold in step (2)
But use temperature for 1 DEG C -5 DEG C of water；The decompression is to drop to 0.3-0.45MPa by 0.7-1.0MPa.
7. the preparation method of softening catheter in front end according to claim 1, which is characterized in that in step (2), the alkali
The temperature of processing is 28 DEG C -40 DEG C, time 2-4h.
8. the preparation method of softening catheter in front end according to claim 1, which is characterized in that described to go out in step (4)
Bacterium is using ethylene oxide.
9. the preparation method of softening catheter in front end according to claim 1, which is characterized in that described solid in step (4)
The mode of change is heat cure；The solidification temperature is 120 DEG C -180 DEG C, time 30-60min.
10. a kind of front end softens catheter, which is characterized in that the front end softening catheter is by any one of claim 1 to 9 institute
The preparation method stated is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910686798.2A CN110404120A (en) | 2019-07-29 | 2019-07-29 | A kind of preparation method of front end softening catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910686798.2A CN110404120A (en) | 2019-07-29 | 2019-07-29 | A kind of preparation method of front end softening catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110404120A true CN110404120A (en) | 2019-11-05 |
Family
ID=68363614
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910686798.2A Pending CN110404120A (en) | 2019-07-29 | 2019-07-29 | A kind of preparation method of front end softening catheter |
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| Country | Link |
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| CN (1) | CN110404120A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070504A (en) * | 2019-12-24 | 2020-04-28 | 广东亿康医疗器械有限公司 | Preparation method of latex catheter mold |
| CN117224074A (en) * | 2023-09-28 | 2023-12-15 | 济南凯特工贸有限公司 | Adjustable visual ureteroscope channel sheath |
-
2019
- 2019-07-29 CN CN201910686798.2A patent/CN110404120A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 张巧玲: "《化工工艺学》", 31 July 2015 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070504A (en) * | 2019-12-24 | 2020-04-28 | 广东亿康医疗器械有限公司 | Preparation method of latex catheter mold |
| CN117224074A (en) * | 2023-09-28 | 2023-12-15 | 济南凯特工贸有限公司 | Adjustable visual ureteroscope channel sheath |
| CN117224074B (en) * | 2023-09-28 | 2024-01-26 | 济南凯特工贸有限公司 | Adjustable visual ureteroscope channel sheath |
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