CN102961775B - Medical active carbon fiber dressing and preparation method thereof - Google Patents
Medical active carbon fiber dressing and preparation method thereof Download PDFInfo
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- CN102961775B CN102961775B CN201210529888.9A CN201210529888A CN102961775B CN 102961775 B CN102961775 B CN 102961775B CN 201210529888 A CN201210529888 A CN 201210529888A CN 102961775 B CN102961775 B CN 102961775B
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- carbon fiber
- active carbon
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 48
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 235000010443 alginic acid Nutrition 0.000 claims abstract description 29
- 229920000615 alginic acid Polymers 0.000 claims abstract description 29
- 239000004744 fabric Substances 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 8
- 239000000783 alginic acid Substances 0.000 claims description 22
- 229960001126 alginic acid Drugs 0.000 claims description 22
- 150000004781 alginic acids Chemical class 0.000 claims description 21
- 239000000178 monomer Substances 0.000 claims description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 238000007306 functionalization reaction Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000648 calcium alginate Substances 0.000 claims description 5
- 235000010410 calcium alginate Nutrition 0.000 claims description 5
- 229960002681 calcium alginate Drugs 0.000 claims description 5
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 claims description 5
- IMBKASBLAKCLEM-UHFFFAOYSA-L ferrous ammonium sulfate (anhydrous) Chemical group [NH4+].[NH4+].[Fe+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O IMBKASBLAKCLEM-UHFFFAOYSA-L 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 3
- 238000001467 acupuncture Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 230000005714 functional activity Effects 0.000 claims description 2
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 206010052428 Wound Diseases 0.000 abstract description 20
- 208000027418 Wounds and injury Diseases 0.000 abstract description 20
- 229940072056 alginate Drugs 0.000 abstract description 7
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 230000029663 wound healing Effects 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 2
- 206010063045 Effusion Diseases 0.000 abstract 1
- 206010000496 acne Diseases 0.000 abstract 1
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 230000000274 adsorptive effect Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 206010053615 Thermal burn Diseases 0.000 description 3
- -1 alginic acid salt Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229940126534 drug product Drugs 0.000 description 3
- 230000002439 hemostatic effect Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000825 pharmaceutical preparation Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- 208000025865 Ulcer Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001804 debridement Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000000416 exudates and transudate Anatomy 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 231100000397 ulcer Toxicity 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 206010011985 Decubitus ulcer Diseases 0.000 description 1
- 208000004210 Pressure Ulcer Diseases 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 230000009537 cortical lesion Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001524 infective effect Effects 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 235000013618 yogurt Nutrition 0.000 description 1
Abstract
The invention relates to a medical active carbon fiber dressing and a preparation method thereof. The medical dressing mainly consists of two layers of active carbon fiber materials and one layer of alginate fiber membrane, wherein an inner layer is formed by an active carbon fiber cloth, a middle layer and a compound layer are formed by an active carbon fiber mat and an alginate fiber membrane, and an outer layer is a fabric coated with a medical adhesive bonding layer which is formed by a breathable gauze or a non-woven fabric, so that the dressing can be conveniently fixed on the surface of a wound. The medical dressing has better adsorptive property and antibacterial property and capabilities of effectively absorbing effusions such as plasma, pimples and the like effused from the surface of the wound without bonding the wound, providing a wet environment needed for quick wound healing, promoting the growth of repair cells and reducing the dressing replacing time. The method provided by the invention is convenient, practical and efficient.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of NACF medical dressing and preparation method thereof.
Background technology
Medical dressing is the class clinical medical material temporarily covering the wounds such as burn, ulcer, wound, and its Main Function is the transudate of control wound and protects wound to pollute from the external source such as antibacterial and grit.Existing treatment burn and scald medicine can not work well, and this is because the carrier in these drug products can not need frequently to change drug products by load treatment burn and scald active pharmaceutical ingredient well, have impact on the healing of wound surface.Therefore, the treatment burn and scald medicine carrier of improvement and drug products prepared therefrom is starved of.
The main component of novel alginic acid salt dressing takes from the algae in sea water, and it is the dressing that the undissolvable polysaccharide alginate of the like fibrous element utilized in algae is made.The main feature of alginic acid dressing is high-hygroscopicity, becomes colloidality and hemostasis.This type of dressing can absorb the liquid being equivalent to own wt 20 times, effectively can control wound fluid, thus prolongation is changed dressings the time.Alginic acid dressing can form gel-like substance at wound surface, so such dressing has part debridement effect.Because of containing a large amount of calcium ions in simultaneously alginic acid dressing, so there is slight anastalsis.But simple alginic acid dressing can not be used for infective wound surface.It is applicable to the wound surface of the more full cortical lesions of sepage or has the wound of dead space of moving under water, as pressure ulcer, various ulcer wound surfaces etc.Representative products has the super appropriate alginate dressing of the liquid of brightness company of Xerox of Britain, the alginate packing of French yogurt.
Activated carbon fiber is the novel adsorbing material of a class, uses existing quite long history as adsorbent.Activated carbon fiber is that organic fiber activates a kind of porous fiber shape adsorbing material be prepared from through high temperature cabonization.The difference of activated carbon fiber and common carbon fibers is, the former specific surface area is high, is about tens to the hundred times of the latter; Carburizing temperature lower (being usually less than 1000 DEG C), tensile strength is less than 500Mpa.And there is multiple organic group in activated carbon fiber surface, comprises oxygen-containing functional group.Activated carbon fiber (ACF) has more advantage than granular activated charcoal (GAC).Activated carbon fiber has higher-strength, not easily efflorescence, and processing forming is good, can be made into non-woven fabrics, cloth, paper, felt etc.Compared with GAC, ACF has larger pore capacities and specific surface area, and based on micropore, specific surface area can reach 3000m
2/ g; Because carbon fiber has thinner size, its diameter is greatly about about 10 μm (size of granular activated carbon is then much bigger), therefore, advantageously diffuse in hand-hole and active surface in adsorbate, make activated carbon fiber demonstrate higher adsorption capacity and absorption-desorption rate faster.
Alginate dressing and NACF dressing respectively have advantage, but any one material is all difficult to the needs meeting wound complexity, so by combination of different materials, form combine dressing, can meet the various requirement in wound healing process preferably.The present invention makes full use of the active carbon fiber fabrics adsorption capacity that structure, active carbon fiber felt are high closely and the good biocompatibility of alginic acid fibre and hemostatic and antibacterial performance, prepares a kind of NACF based medical dressing.This new pattern compress can promote wound healing, improves the comfort level of patient, ease the pain, and the more important thing is, new pattern compress replacement frequency is lower compared with traditional dressing, save manpower, current various countries' medical care human resources, under the overall situation that especially nursing staff lacks, there is great meaning.
Summary of the invention
The object of the present invention is to provide a kind of NACF medical dressing and preparation method thereof, adopt the method for MULTILAYER COMPOSITE, to promote the curative properties of NACF.
NACF medical dressing of the present invention, select active carbon fiber fabrics as internal layer, active carbon fiber felt is absorption enhancement layer, alginic acid fibre film makes NACF combine dressing as binder course, skin scribbles the fabric of medical pressure-sensitive adhesive as tack coat, is convenient to dressing to be fixed on wound surface.
The present invention, described active carbon fiber fabrics and active carbon fiber felt are the methods adopting irradiation grafting, and the functionalization NACF prepared after the function base that NACF surface grafting is suitable, then makes active carbon fiber fabrics and active carbon fiber felt as required.
The present invention, described alginic acid fibre film take calcium alginate fibre as raw material, and adopt needling process processing to be prepared from, described needling process comprises shredding, mixing, combing, cross lapping, acupuncture and rolling step.
The present invention, described fabric is breathable gauze or non-woven fabrics.
The present invention, the preparation process of described functional activity Carbon fibe is as follows: NACF is put into sample sack sealing, use
60co-gamma-rays carries out pre-irradiated, irradiation dose is 48kGy, obtain pre-irradiation NACF, by pre-irradiation NACF at certain dicyandiamide solution and monomer solution, catalyst, under nitrogen atmosphere, be 50-110 DEG C in temperature, response time 1-5 hour, then clean with corresponding solvent or water, 40-70 DEG C of oven dry then.Described dicyandiamide solution is water, acetone, DMF, THF or the methanol solvent as monomer.Described monomer is acrylic acid or acrylic monomer, and monomer concentration is 10-50%.Described catalyst is Mohr's salt, and concentration is 2 × 10
-4mol/L-10 × 10
-4mol/L.
The present invention, the preparation method of described NACF medical dressing, comprises the steps:
(1) pass through at the suitable function base of NACF surface grafting, the NACF of preparation functionalization, is then prepared into active carbon fiber fabrics and active carbon fiber felt.
(2) take alginate fibre as raw material, adopt needling process (through operations such as shredding, mixing, combing, cross lapping, acupuncture, windings) processing to be prepared into alginic acid fibre film.
(3) select active carbon fiber fabrics as internal layer, active carbon fiber felt is absorption enhancement layer, appropriate alginic acid fibre film makes NACF combine dressing as binder course, skin scribbles the fabric of medical pressure-sensitive adhesive as tack coat, is convenient to dressing to be fixed on wound surface.
The present invention, owing to selecting active carbon fiber fabrics as internal layer, active carbon fiber felt is absorption enhancement layer, appropriate alginic acid fibre film makes NACF combine dressing as binder course, make full use of active carbon fiber fabrics structure closely, the adsorption capacity that active carbon fiber felt is high, and the good biocompatibility of alginic acid fibre and hemostatic and antibacterial performance, solve active carbon fiber fabrics adsorption capacity little, more change dressings problem often, the medical function of medical active carbon fiber dressing and absorption property are not fully exerted and embodiment, convenient, practical, efficiently.
The present invention, has good adsorptivity and comfortableness, has the following advantages compared with existing dressing:
(1) by the function base that fiber surface grafting is suitable, effectively improve hydrophilic and the biocompatibility on NACF surface, thus effectively improve the therapeutic effect of NACF;
(2) by carrying out compound with biocompatibility and hemostatic and antibacterial alginic acid fibre of good performance, effective kill bacteria disease has blocked the intrusion of extraneous antibacterial, protect from infection wound surface spread of germs and the infection that causes.Shorten healing cycle, decrease the misery of patient;
(3) active carbon fiber fabrics directly and Wound contact, given full play to NACF distinctive physics debridement effect, effectively adsorbed wound surface exudate, provide the moist environment needed for wound healing, promoted repair cell growth.Adopt active carbon fiber felt as enhancement layer, avoid coming off of NACF surface spikes.
Accompanying drawing explanation
Fig. 1 is the structural representation of NACF medical dressing of the present invention.
In figure, 1, sealing coat 2, active carbon fiber fabrics 3, alginic acid fibre film 4, active carbon fiber felt 5, non-woven fabrics 6, adhesive sticker.
Detailed description of the invention
embodiment 1:nACF is put into sample sack sealing, use
60co-gamma-rays carries out pre-irradiated, and irradiation dose is 48kGy, obtains pre-irradiation NACF.By pre-irradiation NACF at aqueous systems and 25% acrylic monomers solution, 4 × 10
-4the Mohr's salt of mol/L, reacts 3h under blanket of nitrogen at 70 DEG C, and washing, 50 DEG C of oven dry, are prepared into active carbon fiber fabrics and active carbon fiber felt.Take calcium alginate fibre as raw material, needling process is adopted to prepare alginic acid fibre film, adopt MULTILAYER COMPOSITE technique, using active carbon fiber fabrics 2 as internal layer, active carbon fiber felt 4 is absorption enhancement layer, alginic acid fibre film 3 makes NACF combine dressing as binder course, outer by scribbling the non-woven fabrics 5 of medical pressure-sensitive adhesive 6 as tack coat, obtained NACF medical dressing.
embodiment 2:nACF is put into sample sack sealing, use
60co-gamma-rays carries out pre-irradiated, irradiation dose, 48kGy, obtains pre-irradiation NACF.By pre-irradiation NACF at methanol system and 15% acrylic monomers solution, 2 × 10
-4the Mohr's salt of mol/L, reacts 5h under blanket of nitrogen at 50 DEG C, and washing, 60 DEG C of oven dry, are prepared into active carbon fiber fabrics and active carbon fiber felt.Take calcium alginate fibre as raw material, needling process is adopted to prepare alginic acid fibre film, adopt MULTILAYER COMPOSITE technique, using active carbon fiber fabrics 2 as internal layer, active carbon fiber felt 4 is absorption enhancement layer, alginic acid fibre film 3 makes NACF combine dressing as binder course, outer by scribbling the non-woven fabrics 5 of medical pressure-sensitive adhesive 6 as tack coat, obtained NACF medical dressing.
embodiment 3:nACF is put into sample sack sealing, use
60co-gamma-rays carries out pre-irradiated, irradiation dose, 48kGy, obtains pre-irradiation NACF.By pre-irradiation NACF at aqueous systems and 35% acrylate monomer solution, 8 × 10
-4the Mohr's salt of mol/L, reacts 2h under blanket of nitrogen at 90 DEG C, and washing, 45 DEG C of oven dry, are prepared into active carbon fiber fabrics and active carbon fiber felt.Take calcium alginate fibre as raw material, needling process is adopted to prepare alginic acid fibre film, adopt MULTILAYER COMPOSITE technique, using active carbon fiber fabrics 2 as internal layer, active carbon fiber felt 4 is absorption enhancement layer, alginic acid fibre film 3 makes NACF combine dressing as binder course, outer by scribbling the non-woven fabrics 5 of medical pressure-sensitive adhesive 6 as tack coat, obtained NACF medical dressing.
Claims (3)
1. a NACF medical dressing, it is characterized in that: select the active carbon fiber fabrics (2) of functionalization as internal layer, the active carbon fiber felt (4) of functionalization is absorption enhancement layer, alginic acid fibre film (3) is as binder course, scribble the fabric of medical pressure-sensitive adhesive (6) as outer bound layer, wherein outer bound layer is convenient to dressing to be fixed on wound surface, the active carbon fiber fabrics of described functionalization and the active carbon fiber felt of functionalization adopt the method for irradiation grafting to obtain, the functionalization NACF prepared after the function base that NACF surface grafting is suitable, then the active carbon fiber fabrics of functionalization and the active carbon fiber felt of functionalization is made as required, the preparation process of described functional activity Carbon fibe is as follows: NACF is put into sample sack sealing, with
60co-gamma-rays carries out pre-irradiated, irradiation dose is 48kGy, obtain pre-irradiation NACF, by pre-irradiation NACF at certain dicyandiamide solution, under monomer and catalyst, under nitrogen atmosphere, at temperature is 50-110 DEG C, response time 1-5 hour, described catalyst is Mohr's salt, then, clean with corresponding solvent again, 40-70 DEG C of oven dry, described alginic acid fibre film take calcium alginate fibre as raw material, needling process processing is adopted to be prepared from, described needling process comprises shredding, mixing, combing, cross lapping, acupuncture and rolling step,
Described monomer is acrylic acid, and monomer concentration is 10-50%.
2. NACF medical dressing according to claim 1, is characterized in that: described fabric is breathable gauze or non-woven fabrics.
3. NACF medical dressing according to claim 1, is characterized in that: described dicyandiamide solution is water, acetone, DMF, THF or methanol, and the solvent as monomer uses.
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| CN201210529888.9A CN102961775B (en) | 2012-12-10 | 2012-12-10 | Medical active carbon fiber dressing and preparation method thereof |
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| CN201210529888.9A CN102961775B (en) | 2012-12-10 | 2012-12-10 | Medical active carbon fiber dressing and preparation method thereof |
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| CN102961775B true CN102961775B (en) | 2015-02-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2995324A1 (en) * | 2014-09-11 | 2016-03-16 | Mölnlycke Health Care AB | Medical dressing |
| CN104436290B (en) * | 2014-11-07 | 2017-02-08 | 广东泰宝医疗科技股份有限公司 | Functional dressing for inhibiting scar hyperplasia and preparation method thereof |
| CN104800882B (en) * | 2015-05-05 | 2018-01-02 | 张灿萍 | A kind of Medical novel nursing bandage |
| CN105288698A (en) * | 2015-11-19 | 2016-02-03 | 广东泰宝医疗科技股份有限公司 | Calcium alginate composite medical surgical dressing and preparation method thereof |
| CN108079365A (en) * | 2017-12-20 | 2018-05-29 | 江苏省健尔康医用敷料有限公司 | The antibacterial absorbent gauze of waterproof ventilating type |
| CN108175471A (en) * | 2018-01-24 | 2018-06-19 | 南通大学附属医院 | A kind of special tightening abdnominal belt device of gynemetrics |
| CN110237295B (en) * | 2019-07-29 | 2021-08-24 | 健诺维(成都)生物科技有限公司 | Anthocyanin alginate dressing |
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