CN204655268U - A kind of alginate medical dressing - Google Patents

Abstract

This utility model relates to medical material, is specifically related to a kind of alginate medical dressing.Described dressing from top to bottom comprises off-style paper layer, Sorbsan layer, high molecular material of high water absorption layer and backing layer successively.It is strong that this utility model absorbs transudate ability, adhesion wound, there is stronger lock outlet capacity, effectively can promote the healing of wound, the time of wound repair can be shortened, reduce wound infection, improve cure rate, alleviate patient's misery, especially can be in the patient of chronic ulcer and change dressings, add the compliance of patient.

Description

A kind of alginate medical dressing

technical field

The utility model belongs to the technical field of medical materials, in particular to an alginate medical dressing.

Background technique

As a covering for wounds, medical dressings can replace damaged skin to act as a temporary barrier during wound healing, avoid or control wound infection, and provide an environment conducive to wound healing. With the aging population and the increase of chronic ulcerative wounds, the market value of medical dressings is also becoming more and more important. In 1962, the British Winter proposed the "moist wound healing theory", that is, wounds heal faster in a moist environment than in a dry environment, which made a breakthrough in people's understanding of the wound healing process.

Medical dressings can be divided into traditional dressings, biological dressings and synthetic dressings according to their materials. Among them, biological dressings have a wide range of sources, and have good effects in terms of adhesion, pain relief, wound protection, and reduction of body fluid leakage, so they have been favored by people. However, the permeability, degradability, low antigenicity and healing effect of some biological dressings are not satisfactory. An ideal biological dressing should have the following functions: cover and protect the wound from infection; good biocompatibility; biodegradability and appropriate degradation rate; sufficient mechanical strength to support cell differentiation and proliferation; sufficient cell surface The adsorption capacity is beneficial to the adhesion and growth of cells; the source of materials is sufficient, and it is easy to make and process. Research and development of multi-functional biological dressings to meet the functional requirements of ideal dressings is currently a research hotspot in biological dressings.

Most dressings made of natural materials have good absorption, good biocompatibility and biological activity, but poor mechanical properties. Synthetic polymer materials have good insulation performance and good mechanical strength, but their absorption performance is worse than that of natural materials. Therefore, the requirements for wound healing can be achieved by compounding materials and combining the advantages of various materials. If the combination of hydrogel and synthetic film or foam is used, drugs can also be introduced into the dressing through physical or chemical methods to obtain drug dressings, which can protect the wound surface and treat the wound at the same time.

CN201558224U discloses a kind of medical composite dressing, is made up of adhesive layer, coating core, release paper layer, and adhesive layer is the nonwoven fabric with single-sided adhesive, and coating core is calcium alginate chitosan nonwoven The cloth is fixed on the adhesive in the middle of the adhesive layer, and the release paper layer is divided into two pages to overlap and cover the core.

CN102258801A discloses a calcium alginate sponge medical dressing, which is made of two kinds of sodium alginate blend solutions with different molecular weights, formed by freeze-drying, calcium ion cross-linking and curing, and treated with a softener, which can replace calcium alginate non-woven fabrics Medical dressings are used to treat various types of skin wounds such as surgical wounds and burn wounds, prevent bacterial infection, promote tissue repair, and accelerate wound healing.

Most of the existing medical dressings have single functions, are not comprehensive, and have limited biocompatibility. Medical dressings should not only be limited to protecting the wound surface, but also have the effect of promoting wound healing, easy to use, relieve patients' pain, and not produce scar tissue after wound healing.

Utility model content

The technical problem to be solved by the utility model is to provide an alginate medical dressing with good ability to absorb exudate, promote wound healing, and good water retention in view of the deficiencies in the prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: an alginate medical dressing, which comprises a release paper layer, a calcium alginate fiber layer, and a superabsorbent polymer material from top to bottom. layer and backing layer.

The surface of the calcium alginate fiber layer is sprayed with a nano silver-loaded zinc oxide layer.

The superabsorbent polymer material layer is one or more combinations of polyacrylate, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyurethane foam, and polyvinyl alcohol foam.

The backing layer is a viscose-coated PU film or a spunlace non-woven fabric.

The adhesive is a medical pressure-sensitive adhesive.

Both the calcium alginate fiber layer and the superabsorbent polymer material layer are located in the middle of the backing layer.

The widths of the calcium alginate fiber layer and the superabsorbent polymer material layer are smaller than the width of the backing layer.

The release paper is two pieces, which are respectively bonded to the two ends of the backing layer and extend toward the middle, and cover the calcium alginate fiber layer crossing up and down.

The release paper layer has the same width as the backing layer.

The utility model provides an alginate medical dressing, which sequentially comprises a release paper layer, a calcium alginate fiber layer, a high water-absorbing polymer material layer and a backing layer from top to bottom. The connection method between layers can be obtained by those skilled in the art through common knowledge or experience, such as bonding, etc. The utility model has no special limitation on the connection method. Various materials described in the utility model can be commercially available.

Release paper, also known as silicone oil paper and anti-sticking paper, mainly plays the role of isolating sticky objects and protecting the internal objects.

Calcium alginate fiber is used in medical dressings, which can conduct contact ion exchange with sodium ions and water in wound exudate, so that calcium alginate becomes gel, provides a moist healing environment, promotes wound cell proliferation, and accelerates wound healing; Macrophages are stimulated and activated by gel and calcium alginate fibers to remove infected tissues and scabs; promote the release of growth factors, promote the proliferation of fibroblasts/keratinocytes, and accelerate healing; stimulate platelet adhesion/aggregation and Activate the internal coagulation factor to achieve the effect of hemostasis.

The superabsorbent polymer material can absorb a large amount of exudate, reduce the impact of exudate and maceration on the wound, and provide a moist, warm and airtight healing environment for the wound; and gas and water vapor can pass through, with good air permeability; comfortable, It is easy to use, has good compliance, is easy to tear off, and does not hurt the skin; heat insulation, buffering external impact/pressure, and prolonging the use time of wound dressings.

Calcium alginate fiber and super absorbent polymer materials provide wounds with anti-inflammatory, antibacterial, hemostasis, and promote the growth of wound tissue cells. They have excellent biocompatibility and degradability for skin and wounds, and are easily absorbed by the human body. The wound is moist, the dressing and the wound are kept completely peeled off, the fibers are not left on the wound surface, and the death and exposure of the nerve endings are prevented, which reduces the damage to the wound surface during replacement. Non-toxic, non-irritating, non-sensitizing.

The backing layer plays a supporting role for the dressing, enhances the dimensional stability of the dressing, has good mechanical properties, low cost, energy saving, environmental protection, cleanliness and antibacterial.

In addition, the surface of the calcium alginate fiber layer described in the present invention is sprayed with a nano-silver-loaded zinc oxide layer. The nano-silver-loaded zinc oxide is to add silver atoms to the zinc oxide lattice with a special process in the nano-scale zinc oxide lattice process. Among them, loading silver atoms into the nano-zinc oxide lattice can not only improve the antibacterial ability, but also solve the easy discoloration of silver ions, so that it can produce a good antibacterial effect without light source irradiation. The effective combination of nano silver-loaded zinc oxide and the dressing makes the silver ions and zinc oxide in the dressing exert antibacterial and antibacterial effects, reduce local wound infection, improve the local microenvironment of the wound, and accelerate wound healing.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The utility model has a strong ability to absorb exudate, does not adhere to the wound, has a strong ability to lock water, and can effectively promote wound healing.

(2) The utility model has strong antibacterial ability and can provide trace element zinc to the wound to further promote wound healing and prevent wound infection.

(3) The utility model has good biocompatibility, no immunogenicity, good air permeability and good adhesion.

The alginate medical dressing provided by the utility model can shorten the time for wound repair, reduce wound infection, improve the cure rate, and alleviate the suffering of patients. Especially for patients with chronic ulcers, the dressing can be changed at home, which increases the patient's compliance.

Description of drawings

Fig. 1: the structural representation of the utility model embodiment one;

Fig. 2: the structural representation of the second embodiment of the utility model;

Among them, 1-release paper layer, 2-calcium alginate fiber layer, 3-superabsorbent polymer material layer, 4-backing layer, 5-nanometer silver-loaded zinc oxide layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment one

As shown in Figure 1, the utility model is an alginate medical dressing, which comprises a release paper layer 1, a calcium alginate fiber layer 2, a superabsorbent polymer material layer 3 and a backing from top to bottom. Layer 4. The surface of the calcium alginate fiber layer 2 is sprayed with a nano silver-loaded zinc oxide layer 5 . The superabsorbent polymer material layer 3 is polyacrylate, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyurethane foam or polyvinyl alcohol foam. The backing layer 4 is a PU film coated with adhesive. The adhesive is a medical pressure-sensitive adhesive. Both the calcium alginate fiber layer 2 and the superabsorbent polymer material layer 3 are located in the middle of the backing layer 4 . The widths of the calcium alginate fiber layer 2 and the superabsorbent polymer material layer 3 are smaller than the width of the backing layer 4 . The release paper 1 is two pieces, which are respectively bonded to the two ends of the backing layer 4 and extend toward the middle, and cover the calcium alginate fiber layer 2 up and down crosswise. The release paper layer 1 has the same width as the backing layer 4 .

Embodiment two

As shown in Figure 2, the utility model is an alginate medical dressing, which comprises a release paper layer 1, a calcium alginate fiber layer 2, a superabsorbent polymer material layer 3 and a backing from top to bottom. Layer 4. The superabsorbent polymer material layer 3 is a combination of polyacrylate, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyurethane foam, and polyvinyl alcohol foam. The backing layer 4 is a spunlace non-woven fabric. Both the calcium alginate fiber layer 2 and the superabsorbent polymer material layer 3 are located in the middle of the backing layer 4 . The widths of the calcium alginate fiber layer 2 and the superabsorbent polymer material layer 3 are smaller than the width of the backing layer 4 . The release paper 1 is two pieces, which are respectively bonded to the two ends of the backing layer 4 and extend toward the middle, and cover the calcium alginate fiber layer 2 up and down crosswise. The release paper layer 1 has the same width as the backing layer 4 .

The applicant declares that the utility model illustrates the detailed structural features and usage methods of the utility model through the above-mentioned embodiments, but the utility model is not limited to the above-mentioned detailed structural features and usage methods, that is, it does not mean that the utility model must rely on the above-mentioned Detailed structural features and methods of use can be implemented. Those skilled in the art should understand that any improvement of the utility model, the equivalent replacement of the selected components of the utility model, the addition of auxiliary components, the selection of specific methods, etc., all fall within the scope of protection and disclosure of the utility model within.

Claims (9)

1. An alginate medical dressing, characterized in that: the dressing comprises a release paper layer, a calcium alginate fiber layer, a superabsorbent polymer material layer and a backing layer successively from top to bottom. 2. The alginate medical dressing according to claim 1, characterized in that: the surface of the calcium alginate fiber layer is sprayed with a nanometer silver-loaded zinc oxide layer. 3. alginate medical dressing as claimed in claim 1, is characterized in that: described superabsorbent polymer material layer is polyacrylate, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyurethane foam, polyvinyl alcohol One or a combination of foams. 4. The alginate medical dressing according to claim 1, characterized in that: the backing layer is a viscose-coated PU film or a spunlace non-woven fabric. 5. The alginate medical dressing according to claim 4, characterized in that: the viscose is a medical pressure-sensitive adhesive. 6. The alginate medical dressing according to claim 1, characterized in that: the calcium alginate fiber layer and the superabsorbent polymer material layer are both located in the middle of the backing layer. 7. The alginate medical dressing according to claim 1, characterized in that: the width of the calcium alginate fiber layer and the superabsorbent polymer material layer is smaller than the width of the backing layer. 8. The alginate medical dressing as claimed in claim 1, characterized in that: the release paper is two pieces, which are respectively bonded to the two ends of the backing layer and extend to the middle, and cover the top and bottom cross on the calcium alginate fiber layer. 9. The alginate medical dressing according to claim 1, characterized in that: the release paper layer has the same width as the backing layer.