CN114028075A - Chitosan-based dressing with good absorptivity - Google Patents
Chitosan-based dressing with good absorptivity Download PDFInfo
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- CN114028075A CN114028075A CN202111265041.XA CN202111265041A CN114028075A CN 114028075 A CN114028075 A CN 114028075A CN 202111265041 A CN202111265041 A CN 202111265041A CN 114028075 A CN114028075 A CN 114028075A
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- dressing
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- 229920001661 Chitosan Polymers 0.000 title claims abstract description 82
- 239000010410 layer Substances 0.000 claims abstract description 186
- 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 claims abstract description 20
- 229940072056 alginate Drugs 0.000 claims abstract description 20
- 229920000615 alginic acid Polymers 0.000 claims abstract description 20
- 235000010443 alginic acid Nutrition 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 230000035876 healing Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 17
- 239000012792 core layer Substances 0.000 claims abstract description 16
- 230000001737 promoting effect Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 239000012790 adhesive layer Substances 0.000 claims description 24
- 230000002439 hemostatic effect Effects 0.000 claims description 12
- 230000023597 hemostasis Effects 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims 2
- 206010052428 Wound Diseases 0.000 abstract description 46
- 208000027418 Wounds and injury Diseases 0.000 abstract description 46
- 230000000694 effects Effects 0.000 abstract description 12
- 230000029663 wound healing Effects 0.000 abstract description 8
- 230000000149 penetrating effect Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000000740 bleeding effect Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000028327 secretion Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 208000035874 Excoriation Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000034693 Laceration Diseases 0.000 description 1
- 206010072170 Skin wound Diseases 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 229940030225 antihemorrhagics Drugs 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 210000000416 exudates and transudate Anatomy 0.000 description 1
- 230000000025 haemostatic effect Effects 0.000 description 1
- 230000003053 immunization Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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- A61F13/01012—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/00051—Accessories for dressings
- A61F13/00063—Accessories for dressings comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
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- A61F13/01029—
-
- A61F13/01042—
-
- A61F13/01046—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive plasters or dressings
- A61F13/0203—Adhesive plasters or dressings having a fluid handling member
- A61F13/0206—Adhesive plasters or dressings having a fluid handling member the fluid handling member being absorbent fibrous layer, e.g. woven or nonwoven absorbent pad, island dressings
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- A61F13/05—
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (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)
- Medicinal Chemistry (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention discloses a chitosan-based dressing with good absorptivity, which relates to the technical field of chitosan-based dressings and comprises a base layer, wherein a second through hole is formed in the position, from the top end of the base layer to the bottom end of the base layer in a penetrating manner, the second through hole is formed between first through holes, a protective net is arranged in the second through hole, a back material layer is connected to the upper side surface of the base layer and arranged on the upper side surface of the second through hole, a sponge layer is connected to the upper side surface of the back material layer, a third through hole is formed in the position, from the top end of the sponge layer to the bottom end of the sponge layer in a penetrating manner, a chitosan dressing layer is connected to the upper side surface of the sponge layer, an alginate layer is connected to the upper side surface of the chitosan dressing layer, and a water absorption layer is connected to the upper side surface of the alginate layer. The chitosan dressing layer, the non-woven fabric, the chitosan-based core layer, the healing promoting layer and the alginate layer are arranged, so that the chitosan-based dressing is favorable for absorbing the wound surface of a patient more comprehensively and better when the wound surface of the patient is treated by using the chitosan-based dressing, the wound healing is promoted, and the wound healing effect is better.
Description
Technical Field
The invention relates to the technical field of chitosan-based dressings, in particular to a chitosan-based dressing with good absorptivity.
Background
The skin is an important organ of the human body, plays the roles of controlling the body temperature, preventing infection, immunizing and sensing, the chitosan base has good biocompatibility and antiviral property, the fine chitosan fine powder can obviously promote wound healing, and the chitosan fiber film is used for the film, or non-woven fabrics made by blending other fibers such as cotton, cellulose and the like can be used as good wound dressings, various medical dressings made of chitosan fibers are used for clinical application of scalds, abrasions, skin lacerations and the like, the curative effect is obvious, and the prior wound dressings are used in clinical application, the dressing has poor air permeability and weak capability of absorbing secretion, so that the healing effect of the wound is affected.
Disclosure of Invention
Based on the above, the invention aims to provide a chitosan-based dressing with good absorptivity, so as to solve the technical problems that the dressing has poor air permeability and poor secretion absorption capability in the prior art, and the healing effect of a wound is affected.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a chitosan base dressing that absorptivity is good, includes the basic unit, the basic unit top is run through to be provided with the second through-hole to the basic unit bottom, the second through-hole sets up between first through-hole, and the inside protection network that is provided with of second through-hole, the side is connected with the back of the body material layer on the basic unit, and the back of the body material layer sets up the side on the second through-hole, the side is connected with the sponge layer on the back of the body material layer, and the sponge layer top is run through to be provided with the third through-hole bottom the sponge layer, the side is connected with the chitosan dressing layer on the sponge layer, and the side is connected with alginate layer on the chitosan dressing layer, the side is connected with the layer that absorbs water on the alginate layer, and absorb water the side and be connected with the hemostasis layer on the layer, the basic unit upside is connected with the second protection film.
By adopting the technical scheme, when the chitosan-based dressing is used for wound dressing treatment of patients, the first through hole, the second through hole and the third through hole simultaneously ventilate the contact area of the base layer and the medicine and the skin, thereby avoiding the skin in the wound area from being infected with peculiar smell, meanwhile, the protective net is arranged in the second through hole, so that dust and impurities are not easy to influence the chitosan-based dressing, the chitosan-based dressing can be well absorbed by the wound surface through the non-woven fabric, the chitosan-based core layer, the healing promoting layer, the alginate layer, the water absorbing layer and the hemostatic layer, thereby the wound can be kept to be healed in a good sterile environment, and the water absorption layer can absorb and treat the seepage on the wound surface in time, meanwhile, the hemostasis layer can stop bleeding on the wound surface in time, so that the wound is prevented from being in a humid environment, and the wound is fully protected.
The invention is further provided that the lower side surface of the base layer is provided with a first protection film, the lower side surface of the first protection film is provided with a first poking sheet, meanwhile, the first poking sheets are respectively arranged on the left lower side surface and the right lower side surface of the first protection film, and the first protection film is attached to the lower side surface of the base layer.
Through adopting above-mentioned technical scheme, first protection film plays comprehensive protection to basic unit's lateral surface, avoids this chitosan base dressing to appear polluting the unable condition of using.
The invention is further arranged in such a way that the upper side surface of the base layer is provided with an adhesive layer, the overlooking shape of the adhesive layer is square, the length and the width of the adhesive layer are respectively equal to the length and the width of the base layer, and the base layer is fixedly connected with the adhesive layer.
Through adopting above-mentioned technical scheme, the adhesive layer makes attached around patient's wound that the basic unit can be fine, makes this chitosan base dressing can be fine play the treatment to patient's wound region, and the adhesive layer be the mouth style of calligraphy, lets the adhesive layer can not play the effect of sheltering from to first through-hole and second through-hole, causes the ventilation effect of first through-hole and second through-hole not influenced.
The invention is further provided with first through holes penetrating from the top end of the base layer to the bottom end of the base layer, the first through holes are arranged between the adhesive layers, adhesive blocks are arranged between the first through holes, and the adhesive blocks are arranged at the top end of the base layer.
Through adopting above-mentioned technical scheme, the setting of sticky piece makes the attached glutinous effect of gluing of basic unit better, avoids the basic unit the condition that drops to appear.
The back material layer is arranged on the back material layer, the sponge layer is arranged on the back material layer, and the sponge layer is arranged on the back material layer.
Through adopting above-mentioned technical scheme, the third through-hole can play ventilative to chitosan dressing layer, alginate layer, absorb water layer and hemostasis layer and skin wound face department, avoids the wound area to appear the condition of peculiar smell infection.
The invention is further set that the chitosan dressing layer comprises a non-woven fabric, a chitosan base core layer and a healing promoting layer inside, the lower side surface of the non-woven fabric is connected with the upper side surface of the sponge layer, the upper side surface of the non-woven fabric is connected with the chitosan base core layer, the upper side surface of the chitosan base core layer is connected with the healing promoting layer, and meanwhile, the upper side surface of the healing promoting layer is connected with the lower side surface of the alginate layer.
By adopting the technical scheme, when the chitosan dressing layer is attached to the area of the wound surface of a patient, the chitosan-based dressing is directly contacted with the wound surface through the arrangement of the non-woven fabric, the chitosan-based core layer and the healing promoting layer, so that the chitosan-based dressing can be fully absorbed by the wound and has the effect of healing the wound nearby.
The invention is further provided that the second protective film covers the upper side surfaces of the base layer, the base layer and the hemostasis layer completely, the upper side surface of the second protective film is connected with the second poking sheet, and the second poking sheets are arranged on the left upper side surface and the right upper side surface of the second protective film respectively.
By adopting the technical scheme, the second protective film can shield and protect the chitosan-based dressing, so that the chitosan-based dressing is prevented from being polluted, and the use of the chitosan-based dressing is not affected.
In summary, the invention mainly has the following beneficial effects:
1. the chitosan dressing layer, the non-woven fabric, the chitosan-based core layer, the healing promoting layer and the alginate layer are arranged, so that the chitosan-based dressing is favorable for absorbing the wound surface of a patient more comprehensively and better when the wound surface of the patient is treated by using the chitosan-based dressing, the wound healing is promoted, and the wound healing effect is better;
2. the chitosan-based dressing is beneficial to enabling the contact part of the chitosan-based dressing and the wound surface and the base layer covering area to be breathable constantly when the chitosan-based dressing is applied to the wound surface of a patient by arranging the first through hole, the second through hole, the protective net, the sponge layer and the third through hole;
3. the wound healing device is provided with the alginate layer, the water absorbing layer and the hemostatic layer, so that exudate at a wound can be comprehensively and timely absorbed, the hemostatic layer can timely play a role in stopping bleeding at the wound, the skin and the environment around the wound are dry, and the wound healing effect is better.
Drawings
FIG. 1 is a front perspective view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is a cross-sectional top view of the present invention;
FIG. 4 is a top view of a substrate of the present invention;
FIG. 5 is a top plan view of a sponge layer of the present invention;
FIG. 6 is a cross-sectional view of a chitosan dressing layer of the present invention;
FIG. 7 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
fig. 8 is an enlarged view of the invention at B in fig. 4.
In the figure: 1. a base layer; 2. a first protective film; 3. a first plectrum; 4. an adhesive layer; 5. a first through hole; 6. gluing blocks; 7. a second through hole; 8. a protective net; 9. a backing material layer; 10. a sponge layer; 11. a third through hole; 12. a chitosan dressing layer; 121. non-woven fabrics; 122. a chitosan-based core layer; 123. a healing promoting layer; 13. an alginate layer; 14. a water-absorbing layer; 15. a haemostatic layer; 16. a second protective film; 17. and a second pick.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A chitosan-based dressing with good absorptivity is disclosed, as shown in figures 1-8, a second through hole 7 is arranged on the top end of a base layer 1 penetrating to the bottom end of the base layer 1, the second through hole 7 is arranged between first through holes 5, a protective net 8 is arranged inside the second through hole 7, a backing material layer 9 is connected on the side surface of the base layer 1, the backing material layer 9 is arranged on the upper side surface of the second through hole 7, a sponge layer 10 is connected on the side surface of the backing material layer 9, a third through hole 11 is arranged on the top end of the sponge layer 10 penetrating to the bottom end of the sponge layer 10, a chitosan dressing layer 12 is connected on the side surface of the sponge layer 10, an alginate layer 13 is connected on the side surface of the chitosan dressing layer 12, a water absorption layer 14 is connected on the upper side surface of the alginate layer 13, a hemostatic layer 15 is connected on the upper side surface of the water absorption layer 14, seepage liquid at a wound surface can be absorbed and treated in time by the water absorption layer 14, and bleeding at the wound surface can be stopped in time by the hemostatic layer 15, thereby avoiding the wound in a humid environment and fully protecting the wound, and the upper side of the base layer 1 is connected with a second protective film 16.
Referring to fig. 1 and 2, a first protection film 2 is disposed on the lower side of the base layer 1, a first shifting piece 3 is disposed on the lower side of the first protection film 2, the first shifting piece 3 is disposed on the left and right lower sides of the first protection film 2, the first protection film 2 is attached to the lower side of the base layer 1, the first protection film 2 protects the outer side of the base layer 1 completely, and the chitosan-based dressing is prevented from being polluted and unable to be used.
Referring to fig. 1, fig. 3, fig. 4 and fig. 7, the adhesive layer 4 is arranged on the upper side surface of the base layer 1, the overlooking shape of the adhesive layer 4 is square, meanwhile, the length and the width of the adhesive layer 4 are respectively equal to the length and the width of the base layer 1, the base layer 1 is fixedly connected with the adhesive layer 4, the adhesive layer 4 enables the base layer 1 to be well attached to the periphery of a wound of a patient, the chitosan-based dressing can well treat the wound area of the patient, the adhesive layer 4 is square, the adhesive layer 4 cannot shield the first through hole 5 and the second through hole 7, and the ventilation effect of the first through hole 5 and the second through hole 7 is not affected.
Please refer to fig. 3, fig. 4 and fig. 8, the top end of the base layer 1 penetrates to the bottom end of the base layer 1 to be provided with a first through hole 5, the first through hole 5 is arranged between the adhesive layers 4, an adhesive block 6 is arranged between the first through holes 5, and the adhesive block 6 is arranged at the top end of the base layer 1, when the chitosan-based dressing is used for wound dressing treatment on a patient, the base layer 1 and a contact area of a medicine and the skin are ventilated through the first through hole 5, the second through hole 7 and the third through hole 11, so that the skin in the wound area is prevented from being infected with peculiar smell, and meanwhile, the protective net 8 is arranged in the second through hole 7, so that dust and impurities are not easy to influence on the chitosan-based dressing.
Referring to fig. 5, 6 and 7, the length and width of the sponge layer 10 are respectively the same as those of the back material layer 9, and the third through holes 11 on the sponge layer 10 are correspondingly arranged with the second through holes 7, and the third through holes 11 can ventilate the chitosan dressing layer 12, the alginate layer 13, the water absorption layer 14, the hemostatic layer 15 and the wound surface of the skin, so as to avoid the occurrence of odor infection in the wound area.
Referring to fig. 6, the chitosan dressing layer 12 includes a non-woven fabric 121, a chitosan base core layer 122 and a healing promoting layer 123 inside, the lower side of the non-woven fabric 121 is connected with the upper side of the sponge layer 10, the upper side of the non-woven fabric 121 is connected with the chitosan base core layer 122, the upper side of the chitosan base core layer 122 is connected with the healing promoting layer 123, the upper side of the healing promoting layer 123 is connected with the lower side of the alginate layer 13, and the non-woven fabric 121, the chitosan base core layer 122, the healing promoting layer 123, the alginate layer 13, the water absorbing layer 14 and the hemostatic layer 15 enable the chitosan base dressing to be well absorbed by the wound surface, so that the wound can be healed in a good sterile environment.
Referring to fig. 1, 2 and 7, the second protective film 16 covers the upper side surfaces of the base layer 1, the base layer 1 and the hemostatic layer 15, the upper side surface of the second protective film 16 is connected with the second shifting piece 17, and the second shifting pieces 17 are respectively arranged on the left and right upper side surfaces of the second protective film 16, so that the second protective film 16 can shield and protect the chitosan-based dressing, the chitosan-based dressing is prevented from being polluted, and the use of the chitosan-based dressing is not affected.
The working principle of the invention is as follows: firstly, the second protective film (16) is taken down through the second plectrum (17), the adhesive layer (4), the adhesive block (6) and the hemostatic layer (15) are completely exposed, at the moment, the hemostatic layer (15) is aligned to the wound surface, the base layer (1) is integrally attached to the skin of a patient, the adhesive block (6) is matched with the adhesive layer (4) to enable the base layer (1) to be better attached to the skin of the patient, the base layer (1) is prevented from falling off, therefore, the chitosan-based dressing can well treat the wound surface, the water absorption layer (14) is matched with the hemostatic layer (15) to absorb and stop bleeding from the wound site in time, the environment of the wound surface is enabled to be dry, the chitosan dressing layer (12), the non-woven fabric (121), the chitosan base core layer (122), the healing promoting layer (123) and the alginate layer (13) integrally play roles of sterilization and inflammation diminishing, and meanwhile, the wound can more comprehensively and better absorb drug effects, promote wound healing, third through-hole (11) on sponge layer (10) cooperation second through-hole (7) and first through-hole (5) play ventilation effect simultaneously, make the wound recovery effect better to inside protection network (8) of second through-hole (7) play dirt-proof effect, thereby let chitosan base dressing not influenced.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.
Claims (7)
1. A chitosan-based dressing with good absorptivity comprises a base layer (1) and is characterized in that: a second through hole (7) is arranged from the top end of the base layer (1) to the bottom end of the base layer (1), the second through hole (7) is arranged between the first through holes (5), a protective net (8) is arranged in the second through hole (7), the upper side of the base layer (1) is connected with a backing material layer (9), the back material layer (9) is arranged on the upper side surface of the second through hole (7), the upper side surface of the back material layer (9) is connected with a sponge layer (10), and a third through hole (11) is arranged from the top end of the sponge layer (10) to the bottom end of the sponge layer (10), the upper side surface of the sponge layer (10) is connected with a chitosan dressing layer (12), the upper side of the chitosan dressing layer (12) is connected with an alginate layer (13), the upper side of the alginate layer (13) is connected with a water absorption layer (14), and the upper side surface of the water absorption layer (14) is connected with a hemostatic layer (15), and the upper side of the base layer (1) is connected with a second protective film (16).
2. A chitosan-based dressing with good absorbability according to claim 1, wherein: basic unit (1) downside is provided with first protection film (2), and first protection film (2) downside is provided with first plectrum (3), and both downside about first protection film (2) are set up respectively in first plectrum (3) simultaneously, attached basic unit (1) downside in first protection film (2).
3. A chitosan-based dressing with good absorbability according to claim 1, wherein: the adhesive layer (4) is arranged on the upper side face of the base layer (1), the overlooking shape of the adhesive layer (4) is square, meanwhile, the length and the width of the adhesive layer (4) are respectively equal to those of the base layer (1), and the base layer (1) is fixedly connected with the adhesive layer (4).
4. A chitosan-based dressing with good absorbability according to claim 1, wherein: the base layer (1) top is run through to base layer (1) bottom and is provided with first through-hole (5), and first through-hole (5) set up between adhesive layer (4), be provided with between first through-hole (5) and glue piece (6), and glue piece (6) setting is on base layer (1) top.
5. A chitosan-based dressing with good absorbability according to claim 1, wherein: the length and the width of the sponge layer (10) are respectively the same as those of the back material layer (9), and the position of the third through hole (11) on the sponge layer (10) corresponds to that of the second through hole (7).
6. A chitosan-based dressing with good absorbability according to claim 1, wherein: the chitosan dressing layer (12) is internally provided with a non-woven fabric (121), a chitosan base core layer (122) and a healing promoting layer (123), the lower side surface of the non-woven fabric (121) is connected with the upper side surface of the sponge layer (10), the upper side surface of the non-woven fabric (121) is connected with the chitosan base core layer (122), the upper side surface of the chitosan base core layer (122) is connected with the healing promoting layer (123), and the upper side surface of the healing promoting layer (123) is connected with the lower side surface of the alginate layer (13).
7. A chitosan-based dressing with good absorbability according to claim 1, wherein: the second protection film (16) covers the upper side of the base layer (1), the base layer (1) and the hemostasis layer (15) comprehensively, the upper side of the second protection film (16) is connected with a second poking sheet (17), and the second poking sheets (17) are arranged on the left upper side and the right upper side of the second protection film (16) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265041.XA CN114028075A (en) | 2021-10-28 | 2021-10-28 | Chitosan-based dressing with good absorptivity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265041.XA CN114028075A (en) | 2021-10-28 | 2021-10-28 | Chitosan-based dressing with good absorptivity |
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| CN114028075A true CN114028075A (en) | 2022-02-11 |
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| CN202111265041.XA Pending CN114028075A (en) | 2021-10-28 | 2021-10-28 | Chitosan-based dressing with good absorptivity |
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