Composite medical dressing using calcium alginate fibers

A calcium alginate fiber, medical technology, applied in dressings, viscous dressings, medical science and other directions, can solve problems such as the inability to balance cost and dressing performance, influence of dressing permeability, complicated processing technology, etc., to improve moisture absorption and breathability, Good hygroscopicity and comfortable use

CN103239754AInactive Publication Date: 2013-08-14TIANJIN TEDA JINSHAN PACKING MFR
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-08-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a composite medical dressing using calcium alginate fibers. The composite medical dressing comprises a surface layer, an intermediate layer and a wound contact layer, and is characterized in that the surface layer is made of polyester fiber non-woven fabrics; the intermediate layer and the wound contact layer are made of calcium alginate fiber and polyvinyl alcohol fiber mixing needle-punched non-woven fabrics; the content of the calcium alginate fibers in the intermediate layer is 40%-70%, the content of polyvinyl alcohol fibers in the intermediate layer is 30%-60%, and the gram weight of the intermediate layer is 30-80 g / m<2>; and the content of the calcium alginate fibers in the wound contact layer is 80%-90%, the content of the polyvinyl alcohol fibers in the wound contact layer is 1%-20%, and the gram weight of the wound contact layer is 30-50 g / m<2>. According to the composite medical dressing, the dosage of the calcium alginate fibers can be decreased on the premise of guaranteeing healing effect, thus the production cost is reduced; and the composite medical dressing has the remarkable advantages that a processing technique is simple and chemical adhesives are avoided.
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Description

technical field

[0001] The invention belongs to medical dressings, in particular to a composite medical dressing using calcium alginate fibers. Background technique

[0002] Chronic and complex wound care is the biggest challenge facing the global medical field. Diabetic foot ulcers, venous stasis ulcers, and pressure sores are typical chronic and complex wounds that seriously affect the health of patients, especially the elderly. However, existing medical Dressing products cannot meet the treatment needs of chronic and complex wounds.

[0003] Modern medical theory proves that providing a relatively moist and closed environment to the wound is conducive to the healing of the wound. According to this theory, a series of new biocompatible high-tech dressings have been invented. Calcium alginate fiber has good biocompatibility and degradability. When in contact with the wound, the calcium ions in the calcium alginate fiber and the sodium ions in the exudate can also undergo i...

Examples

Embodiment 1

[0026] Such as figure 1 As shown, the composite medical dressing using calcium alginate fibers includes a surface layer 1, an intermediate layer 2 and a wound contact layer 3, and the surface layer 1 is named after the position of the layer in use. The medical dressing can use commonly used packaging.

[0027] The surface layer of embodiment 1 is a polyester fiber nonwoven fabric, and the grammage is 40g / m 2 , the middle layer 2 and the wound contact layer 3 are needle-punched nonwoven fabrics mixed with calcium alginate fibers and polyvinyl alcohol fibers, wherein the content of calcium alginate fibers in the middle layer is 40%, and the content of polyvinyl alcohol fibers is 60%. The weight of the middle layer is 30g / m 2 , the content of calcium alginate fiber in the wound contact layer is 99%, the content of polyvinyl alcohol fiber is 1%, and the weight of the wound contact layer is 30g / m 2 .

[0028] The compound medical dressing gram weight of embodiment 1 is 100g / m ...

Embodiment 2

[0030] Such as figure 1 As shown, the composite medical dressing using calcium alginate fibers in Example 2 includes a surface layer 1 , an intermediate layer 2 and a wound contact layer 3 . The medical dressing can use commonly used packaging.

[0031] The surface layer of embodiment 2 is a polyester fiber nonwoven fabric, and the grammage is 45g / m 2 , the middle layer 2 and the wound contact layer 3 are needle-punched nonwoven fabrics mixed with calcium alginate fibers and polyvinyl alcohol fibers, wherein the content of calcium alginate fibers in the middle layer is 55%, and the content of polyvinyl alcohol fibers is 45%. The weight of the middle layer is 50g / m 2 , the content of calcium alginate fiber in the wound contact layer is 90%, the content of polyvinyl alcohol fiber is 10%, and the weight of the wound contact layer is 40g / m 2 .

[0032] The compound medical dressing gram weight of embodiment 2 is 135g / m 2 ; The selected calcium alginate fiber has a fineness of...

Embodiment 3

[0034] Such as figure 1 As shown, the composite medical dressing using calcium alginate fibers in Example 3 includes a surface layer 1 , an intermediate layer 2 and a wound contact layer 3 . The medical dressing can use commonly used packaging.

[0035] The surface layer of embodiment 3 is a polyester fiber nonwoven fabric, and the grammage is 50g / m 2 , the middle layer 2 and the wound contact layer 3 are needle-punched nonwoven fabrics mixed with calcium alginate fibers and polyvinyl alcohol fibers, wherein the content of calcium alginate fibers in the middle layer is 70%, and the content of polyvinyl alcohol fibers is 30%. The weight of the middle layer is 80g / m 2 , the content of calcium alginate fiber in the wound contact layer is 80%, the content of polyvinyl alcohol fiber is 20%, and the weight of the wound contact layer is 50g / m 2 .

[0036] The compound medical dressing gram weight of embodiment 3 is 180g / m 2 ; The selected calcium alginate fiber has a fineness of...