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Dressing with fat liquefaction wound healing function and preparation method of dressing

A wound healing and functional technology, used in medical science, bandages, absorbent pads, etc., can solve the problems of limited drainage effect of saline gauze, inability to absorb wound fat droplets, and increase the workload of medical staff, to promote rapid healing and rapid absorption. The effect of incision drainage and reducing the chance of incision infection

Pending Publication Date: 2019-04-16
万绵水
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the drainage effect of saline gauze itself is very limited, and it cannot absorb the free floating fat droplets in the wound. If the wound is soaked in exudate for a long time, granulation edema, poor microcirculation will affect the wound healing, and it is easy to be infected
At the same time, due to long-term and frequent dressing changes, patients can hardly bear the pain caused by dressing changes, and it also increases the workload of medical staff.

Method used

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  • Dressing with fat liquefaction wound healing function and preparation method of dressing
  • Dressing with fat liquefaction wound healing function and preparation method of dressing

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This embodiment provides a preparation method of a fat liquefied wound healing functional dressing, comprising the following steps:

[0028] S1: Using polyvinyl alcohol medical biomaterials as raw materials to produce sponge dressings. Wherein, the sponge dressing comprises from outside to inside in sequence: a supporting layer, a functional layer and a protective layer; the functional layer is made of polyvinyl alcohol foam material and hydrogel to form a polyvinyl alcohol foam layer and a hydrogel layer; The gel layer is coated around the inner surface of the support layer, and the polyvinyl alcohol foam layer is arranged in the middle of the inner surface of the support layer.

[0029] S2: Compress the sponge dressing to form a slight negative pressure when absorbing liquid.

[0030] S3: Holes are evenly punched on the compressed sponge dressing to finally obtain a fat liquefied wound healing dressing.

Embodiment 2

[0032] This embodiment provides a fat liquefaction wound healing functional dressing, such as figure 1 As shown, it includes: a support layer 1 , a functional layer 2 and a protective layer 3 laminated from outside to inside, and the functional layer 2 includes a polyvinyl alcohol foam layer 21 and a hydrogel layer 22 . The polyvinyl alcohol foam layer 2 has uniformly arranged small holes; the supporting layer 1 is a polyurethane film; the protective layer 3 is release paper or glassine paper. Wherein, the hydrogel layer 22 is coated around the inner side of the supporting layer 1 , and the polyvinyl alcohol foam layer 21 is arranged in the middle of the inner side of the supporting layer 1 , that is, in the middle of the hydrogel layer 22 .

Embodiment 3

[0034] This embodiment provides a fat liquefaction wound healing functional dressing, such as figure 1 As shown, it includes: a support layer 1 , a functional layer 2 and a protective layer 3 laminated from outside to inside, and the functional layer 2 includes a polyvinyl alcohol foam layer 21 and a hydrogel layer 22 . The polyvinyl alcohol foam layer 2 has uniformly arranged small holes; the supporting layer 1 is a polyurethane film; the protective layer 3 is release paper or glassine paper. Wherein, the hydrogel layer 22 is coated on the inner side of the support layer 1, the polyvinyl alcohol foam layer 21 is arranged in the middle position of the inner side of the hydrogel layer 22, and the water at the position corresponding to the polyvinyl alcohol foam layer 21 The gel layer 22 is uniformly provided with through holes. Among them, the polyvinyl alcohol foam layer 21 is compressed to make it produce a "siphon effect" and a "pump effect" similar to an injection syringe ...

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Abstract

The invention relates to a dressing with a fat liquefaction wound healing function and a preparation method of the dressing. The preparation method comprises the following steps that S1, a polyvinyl alcohol medical biomaterial is taken as a raw material to produce a sponge dressing; S2, the sponge dressing is compressed to form micro-negative pressure during imbibition; S3, holes are uniformly punched in the compressed sponge dressing, and the dressing with the fat liquefaction wound healing function is finally obtained. The functional dressing adopts the polyvinyl alcohol medical biomaterialas the raw material, and is a polymer material having excellent imbibition performance and a very soft surface when being in contact with the human body and being capable of being completely naturallydegraded. In addition, the functional dressing is convenient to use, can quickly perform drainage when being used, has a large imbibition amount, can promote quick healing of wounds, and reduces therisks of secondary pollution; the dressing does not need to be replaced for a long time, thereby reducing the frequency of dressing change, reducing the pain of a patient, and reducing the workload ofa medical worker.

Description

technical field [0001] The invention relates to the technical field of medical biomaterials, in particular to a fat liquefied wound healing functional dressing and a preparation method thereof. Background technique [0002] Fat liquefaction in surgical incisions refers to the rupture of a large number of fat cells in the incision, and the fat particles in the cells overflow and decompose to form liquid oil, which accumulates in the incision; it is common in patients with thick fat and obesity. Fat liquefaction seriously affects incision healing, increases the risk of infection, and can cause severe sepsis, which is life-threatening. [0003] In view of the above problems, there are many defects in the traditional processing methods. Specifically, the traditional method is to stretch the incision or remove a part of the sutures, or even open the entire incision if necessary, use methods such as squeezing out liquefied fat, flushing with hypertonic saline, drainage with salin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/24A61L15/62A61L15/42A61L15/26
CPCA61L15/24A61L15/26A61L15/42A61L15/425A61L15/62C08L29/04C08L75/04
Inventor 万绵水
Owner 万绵水
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