JP2013000388A - Covering net for wound - Google Patents

Abstract

The present invention provides a wound part covering net capable of maintaining a moist environment of an affected area and maintaining a treatment environment.
SOLUTION: A wound-layer covering net 1 that is brought into contact with a wound portion and takes in exudate from the wound portion is formed into a two-layer mesh sheet formed by circular knitting with a hydrophobic polyester extra fine yarn 2, and the exudate is discharged. It was made to hold in the mesh 4 of the mesh sheet.
[Selection] Figure 2

Description

  The present invention relates to a wound treatment net, and more particularly to a wound coating net that takes in exudate stored in a wound such as a wound or pressure ulcer (bed slip) and promotes healing of the wound.

  Absorbs foreign matter (exudate) and necrotic tissue in the wound as one of the surgical treatments (debridement) that removes infected and necrotic tissue and cleans the wound to prevent other tissues from being affected A dressing material (a wound covering material) is used.

  The dressing should be selected by observing the wound depth, exudate, size, inflammation / infection, granulation tissue, necrotic tissue, pockets, etc., and maintain a moist condition suitable for the wound condition. Helps cell migration and promotes autolysis and elimination of necrotic tissue.

  Examples of such dressing materials include sheet-like dressing materials such as hydrocolloid and polyurethane foam, non-woven dressing materials made of calcium alginate fibers, and dressing materials such as polyurethane films.

  Of these, dressing materials using hydrocolloid materials have a hydrophilic polymer that absorbs excess exudate and has an appropriate wettability because the hydrophilic polymer particles are dispersed in the hydrophobic polymer. The wet environment of the wound part can be maintained by holding

  The dressing material made of polyurethane foam and calcium alginate fiber has excellent moisture absorption capability, so it has the function of absorbing excess and exudate from the wound and retaining exudate. An excess exudate can be absorbed by filling a certain wound part.

  Polyurethane film is permeable to gases such as water vapor and oxygen, so it maintains the moist environment of the wound and does not interfere with sweating or insensitive vaporization from the body. Without having a barrier function on the skin. Moreover, since the liquid and bacteria are not permeated, the wound can be protected from contamination recently.

JP 2002-078730 A

  However, a dressing material made of hydrocolloid, polyurethane foam, and calcium alginate fiber is excellent in exudate absorbability, and therefore absorbs exudate from the wound well initially. However, since the absorbed exudate is gradually solidified, there is a problem that the exudate absorbability of the dressing material is lowered.

  Therefore, the dressing material coated on the wound part results in containment of the exudate from the wound part, and the contaminated exudate is stored in the wound part, and on the contrary, it becomes a hotbed for propagation of various bacteria, causing the wound part to be delayed in healing. It was.

  Moreover, since the dressing material solidified with the exudate adheres to the wound portion and solidifies, it must be forcibly removed at the time of replacement. Therefore, there was also a problem that the wounded part was injured.

  On the other hand, since the dressing material made of polyurethane film and the pad applied to the wound part described in Patent Document 1 hardly absorbs the exudate from the wound part and transmits it, the dressing material is rarely solidified by the exudate, There is little risk that the leasing material or pad will adhere to the wound. However, since the permeability is not necessarily sufficient, it cannot be asserted that there is no case where a dressing material or a pad adheres.

  Accordingly, an object of the present invention is to provide a wound covering that can promote healing of a wound without causing solidification even when the exudate from the wound is absorbed and without causing tissue damage even during the replacement. To provide the net.

  In order to solve the above-mentioned problem, the invention according to claim 1 is directed to a wound part covering net that absorbs exudate from a wound part by bringing the covering material into contact with the wound part, and the covering material has hydrophobicity. It consists of a mesh sheet having a two-layer structure in which monofilaments are circularly knitted.

  The invention according to claim 2 is characterized in that, in claim 1, the mesh sheet is 100% polyester fiber.

  The invention according to claim 3 is characterized in that, in claim 1 or claim 2, the basis weight of the mesh sheet is 3.2 g ± 0.8 g / m.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the mesh sheet is formed by circular knitting with a crimp knitting machine.

  The invention according to claim 5 is characterized in that, in any one of claims 1 to 4, the mesh sheet is washed by refining at a continuous high temperature.

  Since the covering material to be in contact with the wound part is a double-structured mesh sheet formed by circular knitting of hydrophobic monofilaments, the exudate from the wound part can be retained in the stitches, which is contaminated. The exudate does not adhere to the vicinity of the wound, and the wound can be kept clean.

  Further, the monofilament itself is hydrophobic, and smoothness is maintained even in a fine structure. Even at the time of replacement, removal is possible without giving physical damage to the new tissue that causes a regression of healing.

  Therefore, the wound part does not solidify and stick together with the exudate, and the wound part which has been healed by forcibly peeling off the covering material at the time of replacement is not damaged again.

  Further, the mesh fabric is formed by monofilament circular knitting to provide elasticity and flexibility, so that the external stimulation to the wound can be alleviated.

The top view which shows an example of the covering net | network for wound parts which concerns on this invention. FIG. 2 is a sectional view taken along line AA in FIG. 1. The schematic diagram which shows an example of the stitch structure of the covering net | network for wound parts which concerns on this invention. The schematic diagram which shows an example of the usage condition of the covering net | network for wound parts which concerns on this invention.

  Hereinafter, a wound part covering net according to the present invention will be described with reference to the drawings. The wound covering net 1 is formed by circularly knitting polyester ultrafine yarn 2 (polyester 22T) made of 100% polyester fiber using, for example, a crimp knitting machine, and has a two-layer structure as shown in FIG. Yes.

  In the present invention, polyester monofilament 2 of 100% polyester fiber is preferably used as the monofilament formed by circular knitting in consideration of the influence of hydrophobicity, stretchability, strength, heat, acid / alkali, etc. Besides these, polyamide fibers, aramid fibers, carbon fibers, fluorine fibers, and the like may be used.

  Next, the manufacturing process of the wound portion covering net 1 according to the present invention will be described. As described above, the wound portion covering net 1 according to the present invention is formed by circular knitting of the polyester extra fine yarn 2 with a crimp knitting machine, and thereafter subjected to refining processing at a continuous high temperature.

  And after winding up in roll shape, performing external appearance inspections, such as dirt, a foreign material, and a crack, it is cut to predetermined length. The cutting size is not particularly limited. For example, after cutting to a size that fits the size of the wound part, or cutting to an appropriate size, it can be folded according to the area depth of the wound part, or additionally laminated as necessary be able to.

  The basis weight of the polyester fiber sheet formed by this manufacturing method is 3.2 g ± 0.8 g / m.

  Moreover, as shown in FIGS. 1 and 2, the wound part covering net 1 has sealing parts 3 and 3 in which the ends are cut with a polyester thread to prevent curling of the cut end after cutting. Is provided.

  Further, in this example, the wound portion covering net 1 of the present invention is formed by a tentacle knitting as a circular knitting stitch as shown in FIG. 3, but the exudate can be held in the knitting stitch 4. Any other round stitch may be used, for example, a milling knitting or a smooth knitting.

  FIG. 4 shows a use mode of the wound part covering net 1 in the present invention. FIG. 4 (a) shows a state where the wound part covering net 1 is covered on the affected part surface 5, and FIG. A state in which the inside of the affected part 6 is filled with the part covering net 1 is shown.

  Thus, the wound-covering net 1 of the present invention is used by directly contacting the affected parts 5 and 6, and the contaminated exudate is held in the stitch 4, but the polyester ultrafine yarn 2 itself is Since the exudate is not substantially absorbed, the affected areas 5 and 6 and the wound covering net 1 do not adhere.

  Therefore, when replacing the wound part covering net 1, it is not necessary to forcefully remove the wound part 5 and 6 from the affected part 5 and 6 to injure the wound part.

  In addition, since the affected areas 5 and 6 and the wound net 1 are not fixed, the exudate discharge is not hindered and the moist environment of the affected areas 5 and 6 can be maintained, which helps cell migration and necrosis. It can promote self-melting and elimination of tissues.

  Furthermore, the wound part net 1 of the present invention is made of a mesh fabric obtained by circularly knitting monofilaments such as polyester extra fine yarns 2 and is rich in flexibility and elasticity, so that the stimulation to the affected parts 5 and 6 is eased. Contamination can be prevented.

  Next, the present invention will be described with reference to clinical trial examples, but the present invention is not limited thereto.

  Polyester extra fine yarn 2 (polyester 22T) as a wound covering net 1 is circularly knitted with a clamp knitting machine, subjected to refining at a continuous high temperature, and rolled while performing appearance inspection for dirt, foreign matter, scratches, etc. Rolled up.

  The basis weight of the formed mesh sheet is 3.2 g ± 0.8 g / m, but after winding up, it is cut into a width of 12.5 cm × length of 25 cm to 30 cm, and the cut end is stitched with a polyester thread. The sealing parts 3 and 3 were provided, and the wound part covering net 1 shown in FIGS. 1 and 2 was obtained.

<Clinical trial>
After the necrotic tissue of the 4th degree pressure ulcer (40 mm x 20 mm x 100 mm (depth)) in the sciatic nodule of a 45-year-old male patient who is bedridden is removed, the wound covering net 1 is brought into contact with the pressure ulcer. Then, a fiblast spray was sprayed, and continuous suction of 25 mHg (sealed with a polyurethane film) was performed and changed once every three days.
The wound part covering net 1 well retained the exudate from the wound part, and did not adhere to the wound part. After 6 days, the growth of benign granulation was confirmed.

  As described above, according to the wound part net 1 of the present invention, since the polyester extra fine yarn 2 itself does not absorb the exudate, the exudate from the wound part is held in the stitch 4 in a state where it is not solidified. It is possible to maintain the state where the affected part and the wound part net 1 are not fixed.

  Therefore, the wet environment of the wound part can be maintained without hindering the discharge of exudate, and the treatment environment of the wound part can be maintained without damaging the wound part.

1 Net for wound part 2 Polyester extra fine thread 3 Sealing part 4 Stitch 5, 6 Affected part

Claims (5)

In the wound coating net that absorbs exudate from the wound by bringing the dressing into contact with the wound,
The wound covering net according to claim 1, wherein the covering material comprises a mesh sheet having a two-layer structure in which a monofilament having hydrophobicity is circularly knitted.   The wound net according to claim 1, wherein the mesh sheet is 100% polyester fiber.   The wound part covering net according to claim 1 or 2, wherein the mesh weight of the mesh sheet is 3.2 g ± 0.8 g / m.   The wound mesh covering net according to any one of claims 1 to 3, wherein the mesh sheet is formed by circular knitting using a crimp knitting machine.   The wound mesh covering net according to any one of claims 1 to 4, wherein the mesh sheet is subjected to a cleaning process by refining at a continuous high temperature.

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