CN209154630U - A kind of medical dressing - Google Patents
A kind of medical dressing Download PDFInfo
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- CN209154630U CN209154630U CN201820174834.8U CN201820174834U CN209154630U CN 209154630 U CN209154630 U CN 209154630U CN 201820174834 U CN201820174834 U CN 201820174834U CN 209154630 U CN209154630 U CN 209154630U
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- chitin fiber
- medical dressing
- fiber net
- base
- chitin
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Abstract
The utility model discloses a kind of medical dressing, the medical dressing includes chitin fiber net and base's nonwoven layer, there is chitin fiber net at least base's nonwoven layer surface, chitin fiber in the chitin fiber net is interspersed and is wrapped in base's nonwoven layer, wherein: chitin fiber accounts for weight ratio >=50% of chitin fiber net, and the grammes per square metre of chitin fiber net is 2-30g/m2Therefore since the surface of the utility model and contact skin has the chitin fiber for being weight ratio for >=50% good biocompatibility, be conducive to the liquid for quickly absorbing wound exudation, keep wound clean, be conducive to wound healing, and nonwoven layer has then effectively separated extraneous graininess pollutant, reduces external microbe by medical dressing, to cause the risk of cross-infection.
Description
Technical field
The utility model relates to a kind of medical non-woven fabrics field, especially a kind of superficial layer has the doctor of good biocompatibility
Use dressing.
Background technique
Medical dressing is common medical supplies as protecting wound surface covering material, in traditional medical procedure, for
General skin wound will carry out bandaging method for treating, wound is avoided to be infected, or injured again, to promote wound that can use up
Fast healing.
Present chitin fiber is pure natural animal fiber, by it with good biocompatibility, adhesiveness, nothing
Challeng, does not reject at non-sensitization, and ventilative and hygroscopicity good, safe and non-toxic, antibacterial can promote the advantages that being cured, and has been widely applied
In medical domain, it is particularly applied in medical dressing.After being chemically treated shrimp, crab shell using advanced technologies and by acid, alkali,
I.e. from shrimp, crab shell extraction chitin, then through deacetylated technology then become chitin first order derivatives, finally by wet spinning
Technique and chitin fiber is made.But chitin fiber is as a kind of tencel, and since itself is very crisp, spinnability is poor, by force
Spend poor, cohesive force is poor, not easy to be processed, higher cost, therefore is mostly fine with cotton, viscose glue etc. in the application of medical dressing field
Hybrid process is tieed up, to improve its spinnability.Application No. is the patent of invention of 201410370820.X provide a kind of chitin without
Woven fabric comprising host material, the host material contain 5~90 parts by weight chitin fiber and 10~95 parts by weight its
Non-woven fabrics of chitin is made by spun lacing, needle thorn or heat pressing process after mixing in its fiber.But blending product mostly uses greatly spun lacing
Mode forms, and product strength is small, is easily deformed；And product permeability is too high, is easy to be dehydrated the surface of a wound, is unfavorable for wound and is cured
It closes, external environment microorganism is easy to pass through, and to graininess pollutant without barrier, causes the chance of cross-infection higher.
Utility model content
The purpose of the utility model is to overcome the defects of existing medical dressing, now provide a kind of surface biocompatible
Well, intensity is good and the medical dressing and its manufacturing method of cross-infection can be effectively prevented.
To achieve the above object, the solution of the utility model is:
A kind of medical dressing, the medical dressing include with the chitin for accounting for chitin fiber net weight ratio >=50%
The chitin fiber net and base's nonwoven layer of fiber have chitin fiber net, institute at least base's nonwoven layer surface
It states the chitin fiber in chitin fiber net to intert and be wrapped in base's nonwoven layer, the grammes per square metre of chitin fiber net is 2-
30g/m2。
The grammes per square metre of chitin fiber net is 5-20g/m2。
The surface of the chitin fiber net has open-celled structure.
The surface of the chitin fiber net has bulge-structure.
The upper and lower surfaces of base's nonwoven layer all have chitin fiber net.
Base's nonwoven layer is spun-bonded non-woven fabrics, hot-wind nonwoven cloth or fabric hot rolled nonwoven fabrics.
The grammes per square metre of base's nonwoven layer is 5-50g/ m2。
After adopting the above scheme, the medicinal dressing of the utility model is due to base's nonwoven layer surface as contact skin
Upper to have chitin fiber net, the chitin fiber in the chitin fiber net is interspersed and is wrapped in base's nonwoven layer,
And the good biocompatibility of chitin fiber keeps wound clean, favorably to be conducive to the liquid for quickly absorbing wound exudation
In wound healing, and base's nonwoven layer has then effectively separated extraneous graininess pollutant, reduces external microbe and passes through doctor
With dressing, to cause the risk of cross-infection, meanwhile, base's nonwoven layer under the premise of guaranteeing the intensity of medical dressing,
The dosage for greatly reducing chitin fiber reduces the cost of medical dressing.
Detailed description of the invention
Fig. 1 is the sectional view of the medical dressing of the utility model embodiment 1；
Fig. 2 is the top view of the medical dressing of the utility model embodiment 2；
Fig. 3 is the sectional view of the medical dressing of the utility model embodiment 2；
Fig. 4 is the top view of the medical dressing of the utility model embodiment 3；
Fig. 5 is the sectional view of the medical dressing of the utility model embodiment 3；
Fig. 6 is the sectional view of the medical dressing of the utility model embodiment 4.
Specific embodiment
In order to which the technical solution of the utility model is explained further, below by specific embodiment come to the utility model into
Row elaborates.
Embodiment 1
As shown in Figure 1, chitin fiber and other fibers are fed by drawing-in device respectively, drawing-in device to raw material into
After the thick shredding of row, accounting for chitin fiber net weight ratio according to chitin fiber is 50%, and chitin fiber net grammes per square metre is 15g/
m2, cast to progress initial stage mixing on Conveyance belt, then chitin fiber and other fibrous raw materials are sent by Conveyance belt to essence
Enter more storehouse blending boxs after shredding, more storehouse blending boxs make fiber obtain uniform mixing using typical " horizontal paving directly takes " method.
This package unit guarantees effective proportion of fiber, and the fiber after being then blended enters networking system by more storehouse blending boxs, passes through
After combing shredding, carries out cross lapping and drawing-off forms chitin fiber net B1；Chitin fiber net B1 is laid in base's spunbond
On the surface nonwoven layer C1, wherein the grammes per square metre of base's spun-bonded non-woven fabrics is 15g/m2；Then process processing is pierced by spun lacing or needle,
Compound chitin fiber net B1 and base spun-bonded non-woven fabrics layer C1 are sprayed in the fine high-pressure water jet of multiply, water jet passes through multiple
After the chitin fiber net B1 and base spun-bonded non-woven fabrics layer C1 of conjunction, by the rebound of holding lace curtaining, intert compound crust again
Cellulose fiber net B1 and base spun-bonded non-woven fabrics layer C1, as a result, in chitin fiber net B1 fiber in different directions high-speed water jet
Under interspersed hydraulic action, displacement, interspersed, entanglement and obvolvent are generated, is spun to intert and be wrapped in base for chitin fiber
The surface of bonded non-woven fabrics layer C1 forms the medical dressing A1 on the surface of contact skin with chitin fiber.
The main function of usual medical dressing is: 1) controlling the diffusate of wound;2) avoid or control the infection of wound;
3) remove or control the stink that wound generates;4) mitigate pain;5) guarantee the comfort of patient as best one can;6) hidden wound with
Protect the needs hurted sb.'s feelings to beauty;7) it soon cicatrizes a wound and the wound surface after healing is made to have good appearance
Image.
From in several requirements above as can be seen, medical dressing mainly be used to absorb wound on diffusate, control
The breeding of bacterium and wound is protected as much as possible, make patient can normally work and life during wound healing.Therefore,
The main performance index detection method of medical dressing is as follows:
The hygroscopic test method of medical dressing, specific as follows:
Test solution: physiological saline: 0.9% sodium-chloride water solution
Test method: being cut into 5cm × 5cm size for medical dressing first, is then placed in 105 DEG C of baking ovens and does
To weight, dry weight (W, the unit: g) of medical dressing are at this moment measured within dry 2 hours.It is 90cm that medical dressing, which is placed on diameter, later
Culture dish in the physiological saline of 50ml is added, after 30 min are placed at 37 DEG C, with tweezers clamp one jiao of medical dressing
After aerial extension 30s, weight in wet base (W1, the unit: g) of medical dressing are measured.The hygroscopicity of Unit Weight dressing is (W1-W)/W
(unit: g/g), and 100cm2The hygroscopicity of area is 4 (W1-W) (units: g).
Liquid is specific as follows in the test method being distributed between fiber in fiber:
When due to absorbing the diffusate on wound when dressing, a part of liquid is absorbed in the hair between fiber and fiber
In fine space, and another part liquid is preferentially absorbed into the macromolecular structure of fibrous inside.If the liquid and dressing of front portion
Combination it is poor, will make liquid readily along fabric structure spread, cause the wet or even rotten of the skin of wound perimeter.Afterwards
The liquid of a part can be retained in fibrous inside, play the role of as wound moisturizing.And absorb liquid between the fibers
Due to being attracted in dressing in a manner of physical action, it is possible to Centrifugal dehydration method by the liquid of front portion
It is separated with dressing.
A centrifuge tube will be placed on according to the dressing (weight W1) after the moisture absorption after the test of hygroscopic test method
In, knitted fabric that the filling of the lower half of centrifuge tube is folded is to be used to keep the moisture for being centrifuged and sloughing from fiber here.Centrifuge tube
After being dehydrated 15min under the speed of 1200r/min, the weight (W2) of medical dressing after measurement dehydration, this weight W2 is fine
It ties up the dry weight of itself and is absorbed into the summation of the liquid weight of fibrous inside.
W1-W2 is the liquid absorbed between the fibers, and W2-W is the liquid for being absorbed into fibrous inside.And pass through
(W1- W2)/W and (W2-W)/W calculates the liquid that every gram of (dry weight) dressing can be absorbed between fibrous inside and fiber
The scale of construction.
Anti-microbial property test
The Escherichia coli kind to have spread cultivation is made bacteria suspension first, control bacterium number in 1 × 108cfu/ml or so,
And test viable count Ma.Then the step of simulation hygroscopicity test, is placed on the medical dressing of one piece of 5 cm of cm × 5 than doctor
It is weighed with dressing in 40 times of bacteria suspension, after placing 30 min at 37 DEG C in the culture dish that diameter is 90cm, is clamped with tweezers
After one jiao of medical dressing hangs 30s in the sky, with the viable count Mb, bacteriostasis rate Y=(Ma- in microorganism testing method measurement solution
Mb)/Ma × 100%.
Existing medical dressing and medical dressing A1 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under:
Chitin fiber net B1 is in contact with wound and skin when use, due to chitin fiber good biocompatibility, and
And there is moisture absorption and antibacterial action, the liquid of wound exudation can be effectively absorbed, so that wound keeps cleaning, is conducive to wound and is cured
It closes.It and while being also to lean on multiple filtration since the resistance bacterium of the medical dressing of gas permeability is controlled by the size in aperture
It can be only achieved the effect of resistance bacterium, therefore base spun-bonded non-woven fabrics layer C1 passes through the random without several fine fibres of chitin fiber net B1
Rule is criss-cross, forms the aperture that effective aperture is less than 50um, to reach resistance bacterium, ventilative performance, the micro- life of effective barrier
Object and dust penetrate, it is therefore prevented that external microbe invades wound, and guarantees that the superficial layer of medical dressing is chitin fiber
It coats on the basis of mechanical strength, reduces the dosage of chitin fiber, reduce the cost of medical dressing.
Embodiment 2
As shown in Figures 2 and 3, chitin fiber and other fibers are fed by drawing-in device respectively, drawing-in device pair
It is 70% according to the weight ratio that chitin fiber accounts for chitin fiber net after raw material carries out thick shredding, chitin fiber net grammes per square metre
For 20g/m2, cast to progress initial stage mixing on Conveyance belt, then chitin fiber and other fibrous raw materials are by Conveyance belt
Enter more storehouse blending boxs after sending to smart shredding, more storehouse blending boxs obtain fiber uniform using typical " horizontal paving directly takes " method
Mixing.This package unit guarantees effective proportion of fiber, and the fiber after being then blended enters networking by more storehouse blending boxs
System carries out cross lapping and drawing-off after combing shredding, pierces process through spun lacing or needle, surface forms the first of open-celled structure D2
Shell cellulose fiber net B2；Chitin fiber net B2 is laid on the surface base hot-wind nonwoven cloth layer C2, wherein base's hot-wind nonwoven cloth
Grammes per square metre be 24g/m2；Then process processing is pierced by spun lacing or needle, sprays compound crust in the fine high-pressure water jet of multiply
Cellulose fiber net B2 and base hot-wind nonwoven cloth layer C2, water jet pass through compound chitin fiber net B2 and base's hot-wind nonwoven cloth
After layer C2, by the rebound of holding lace curtaining, intert compound chitin fiber net B2 and base hot-wind nonwoven cloth layer C2 again, by
This, under the hydraulic action that different directions high-speed water jet interts, generation is displaced, interts, twining fiber in chitin fiber net B2
Knot and obvolvent, thus table that is chitin fiber is interspersed and being wrapped in the surface of base hot-wind nonwoven cloth layer C2 formation contact skin
With the medical dressing A2 of chitin fiber on face.
Existing medical dressing and medical dressing A2 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under:
Due to contacting the chitin fiber net B2 good biocompatibility of skin, and there is open-celled structure D2, it can be effective
The liquid of wound exudation is absorbed, so that wound keeps cleaning, is conducive to wound healing, and open-celled structure D2 can be effectively reduced
With the contact area of wound, it is therefore prevented that medical dressing and wound adhesion, secondary wound caused by being torn when reducing dressing to wound
Evil.
Embodiment 3
As shown in Figures 4 and 5, chitin fiber and other fibers are fed by drawing-in device respectively, drawing-in device pair
It is 80% according to the weight ratio that chitin fiber accounts for chitin fiber net after raw material carries out thick shredding, chitin fiber net grammes per square metre
For 20g/m2, cast to progress initial stage mixing on Conveyance belt, then chitin fiber and other fibrous raw materials are by Conveyance belt
Enter more storehouse blending boxs after sending to smart shredding, more storehouse blending boxs obtain fiber uniform using typical " horizontal paving directly takes " method
Mixing.This package unit guarantees effective proportion of fiber, and the fiber after being then blended enters networking by more storehouse blending boxs
System, into carding machine, forms the chitin fiber net that surface has bulge-structure E3 after further shredding after jacquard weave
B3；Chitin fiber net B3 is laid on the surface base hot-wind nonwoven cloth layer C3, and wherein the grammes per square metre of base's hot-wind nonwoven cloth is
40g/m2；Then process processing is pierced by spun lacing or needle, compound chitin fiber net is sprayed in the fine high-pressure water jet of multiply
B3 and base hot-wind nonwoven cloth layer C3, after water jet passes through compound chitin fiber net B3 and base hot-wind nonwoven cloth layer C3,
By the rebound of holding lace curtaining, intert compound chitin fiber net B3 and base hot-wind nonwoven cloth layer C3 again, as a result, chitin
Fiber generates displacement, interspersed, entanglement and obvolvent under the hydraulic action that different directions high-speed water jet interts in web B3,
So that chitin fiber is interted and is wrapped in the surface of base hot-wind nonwoven cloth layer C3, being formed on the surface of contact skin has
The medical dressing A3 of chitin fiber.
Existing medical dressing and medical dressing A3 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under:
Due to contacting the chitin fiber net B3 good biocompatibility of skin, and there is bulge-structure E3, it can be effective
The liquid of wound exudation is absorbed, so that wound keeps cleaning, is conducive to wound healing, and projecting apertures structure E3 can be effectively reduced
With the contact area of wound, it is therefore prevented that medical dressing and wound adhesion, secondary wound caused by being torn when reducing dressing to wound
Evil.
Embodiment 4
As shown in fig. 6, chitin fiber net grammes per square metre is 8g/m2, it is 100% by the weight ratio for accounting for chitin fiber net
Chitin fiber is respectively formed two layers chitin fiber net B4 and F4 after shredding, combing, cross lapping, is laid in base's heat
In the upper and lower surface for rolling nonwoven layer C4, wherein the grammes per square metre of base's fabric hot rolled nonwoven fabrics is 20g/m2；Then it is pierced by spun lacing or needle
Process processing, compound chitin fiber net B4, F4 and base fabric hot rolled nonwoven fabrics layer C4 are sprayed in the fine high-pressure water jet of multiply,
After water jet passes through compound chitin fiber net B4, F4 and base fabric hot rolled nonwoven fabrics layer C4, by the rebound of holding lace curtaining, again
Intert compound chitin fiber net B4, F4 and base fabric hot rolled nonwoven fabrics layer C4, as a result, fiber in chitin fiber net B4 and F4
Under the hydraulic action that different directions high-speed water jet interts, displacement, interspersed, entanglement and obvolvent are generated, thus by chitin fibre
Dimension is interspersed and is wrapped in two surfaces of base's fabric hot rolled nonwoven fabrics layer, forms medical dressing A4.
Existing medical dressing and medical dressing A4 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under:
Due to contacting the chitin fiber net B4 good biocompatibility of skin, and there is moisture absorption and antibacterial action, it can be with
The liquid for effectively absorbing wound exudation is conducive to wound healing so that wound keeps cleaning.Superficies chitin fiber simultaneously
F4 is netted, skin-friendly is preferable, prevents adjacent stimulation skin, causes allergy, simultaneously because amino positively charged in chitin fiber is inhaled
Attached bacteria is denaturalized bacteria cell wall memebrane protein, hinders bacterial growth；Meanwhile chitin glycosidic bonds, prevent foreign object in bacterium
The transmitting of matter keeps bacterium interior tissue exposed and dead, therefore chitin fiber has splendid anti-microbial property.
Claims (7)
1. a kind of medical dressing, it is characterised in that: the medical dressing includes having to account for chitin fiber net weight ratio >=50%
Chitin fiber chitin fiber net and base's nonwoven layer, have at least base's nonwoven layer surface chitin fine
Net is tieed up, the chitin fiber in the chitin fiber net is interspersed and is wrapped in base's nonwoven layer, chitin fiber net
Grammes per square metre is 2-30g/m2。
2. a kind of medical dressing as described in claim 1, it is characterised in that: the grammes per square metre of chitin fiber net is 5-20g/m2。
3. a kind of medical dressing as described in claim 1, it is characterised in that: the surface of the chitin fiber net has aperture
Structure.
4. a kind of medical dressing as described in claim 1, it is characterised in that: the surface of the chitin fiber net has protrusion
Structure.
5. a kind of medical dressing as described in claim 1, it is characterised in that: the upper and lower surfaces of base's nonwoven layer are equal
With chitin fiber net.
6. a kind of medical dressing as described in claim 1, it is characterised in that: base's nonwoven layer be spun-bonded non-woven fabrics,
Hot-wind nonwoven cloth or fabric hot rolled nonwoven fabrics.
7. a kind of medical dressing as claimed in claim 6, it is characterised in that: the grammes per square metre of base's nonwoven layer is 5-50g/
m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820174834.8U CN209154630U (en) | 2018-02-01 | 2018-02-01 | A kind of medical dressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820174834.8U CN209154630U (en) | 2018-02-01 | 2018-02-01 | A kind of medical dressing |
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| Publication Number | Publication Date |
|---|---|
| CN209154630U true CN209154630U (en) | 2019-07-26 |
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ID=67326202
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| CN201820174834.8U Active CN209154630U (en) | 2018-02-01 | 2018-02-01 | A kind of medical dressing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494709A (en) * | 2021-01-04 | 2021-03-16 | 川田卫生用品(浙江)有限公司 | Anti-infection puerpera towel |
| CN114366442A (en) * | 2022-01-24 | 2022-04-19 | 高先医疗科技(惠州)有限公司 | Non-woven fabric wound dressing, dressing bag and application thereof |
-
2018
- 2018-02-01 CN CN201820174834.8U patent/CN209154630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494709A (en) * | 2021-01-04 | 2021-03-16 | 川田卫生用品(浙江)有限公司 | Anti-infection puerpera towel |
| CN114366442A (en) * | 2022-01-24 | 2022-04-19 | 高先医疗科技(惠州)有限公司 | Non-woven fabric wound dressing, dressing bag and application thereof |
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