JP2597846Y2 - Sticking material - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patch for medical use.

[0002]

2. Description of the Related Art Heretofore, there are irregularities in a surgeon dressing, a wound covering sheet, a catheter protecting sheet, a drug transdermal administration sheet, and other sticking materials used by sticking to the skin surface. A thin and flexible sheet-like substrate is used, which is provided with a pressure-sensitive adhesive layer, so as to be well adapted to the skin surface which repeatedly undergoes expansion and contraction and bending.

[0003] However, since the base material is rich in flexibility as described above, it is difficult to attach the base material well because the base material has no rigidity and easily bends. Therefore, a carrier sheet having a higher rigidity than the substrate is temporarily attached to the surface of the substrate opposite to the pressure-sensitive adhesive layer, and the carrier sheet is attached to the skin surface in such a temporary attachment state, and then the carrier sheet is attached. I'm trying to peel it off. However, this carrier sheet is an ordinary single sheet
Therefore, the carrier sheet cannot be peeled off smoothly, and the base material often wrinkles, and there are few satisfactory ones.

[0004]

Therefore, it is easy to attach the carrier sheet to the skin surface or the like in a state where the carrier sheet is temporarily attached to the base material of the patch, and after the attachment, the carrier sheet is easily picked and peeled off. It is intended that the substrate can be used without wrinkling.

[0005]

According to the present invention, a carrier sheet is temporarily attached to the other surface of a flexible base material provided with an adhesive layer on one side, and a split for dividing the carrier sheet into a plurality of pieces is provided. , 0.5 to the split, the adjacent parts pieces
~10mm width cities such as a gap of, even if there is unevenness in pasted to the skin or the like, securely affixed kicking it can become escape this split part, also picking the split portion carrier The purpose is to allow the sheet to be easily peeled off.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the following examples, an adhesive layer 2 is formed on one side of a base material 1. This base material is formed into a flexible sheet, and expands and contracts with this flexibility. It is preferable that the material has good properties, can well respond to the expansion and contraction of the skin surface to be stuck, and has a necessary tensile strength. For such a film, for example, a polyurethane film, a polyvinyl chloride film, a polyamide film, a polyvinylidene chloride film, an ethylene vinyl acetate film and other films can be suitably used.
The thickness is preferably about 10 to 40 μm, and if it has a proper moisture permeability, the sticking portion can be prevented from becoming uneven.

The pressure-sensitive adhesive layer 2 is preferably made of a natural rubber-based, synthetic rubber-based, acrylic-based, or silicone-based adhesive, and has a thickness of about 10 to 50 μm. Use of the pressure-sensitive adhesive is preferred because it causes less irritation to the skin. In this adhesive layer, a required amount of a transdermally absorbable drug can be mixed or applied to be carried. The surface of the pressure-sensitive adhesive layer 2 is made of paper subjected to a release treatment,
It is covered with a release paper 3 such as a plastic sheet. In the illustrated example, the inside of one small release piece 31 is folded outward, and the other large release piece 32 is folded back.
3 is formed so as to overlap.

A carrier sheet 4 is temporarily attached to the surface of the substrate 1 opposite to the pressure-sensitive adhesive layer 2 so as to be peelable. The carrier sheet is preferably stiffer than the above base material. For example, a plastic film such as polyethylene, polypropylene, polyester, polyamide, polyimide, acetate cellulose or the like, or a paper which has been subjected to a release treatment may be used. The thickness is also preferably about 10 to 150 μm.

The carrier sheet 4 is provided with a split 5 so as to divide the carrier sheet into a plurality of pieces. The split 5 forms a gap 51 at an appropriate interval between the adjacent sheet pieces 41 and 42. I have to. The one shown is a split 5 in the center of the carrier sheet.
The width of the split, that is, the gap 51
Is about 0.5 to 10 mm, preferably about 1 to 5 mm.
mm, and if this gap is too wide, it is easy to bend at this part and it may not be possible to give a proper waist to the entire substrate, so that the pressure-sensitive adhesive layers may adhere and wrinkle in some cases. .

If the base material 1 is transparent, the affected part can be seen through when it is attached. At the same time, if the carrier sheet 4 is also made transparent, the affected part can be seen when attached. It is more preferable to be able to see through. When such a patch 6 is sealed in an appropriate outer bag (not shown), it is convenient for storage and use.

[0011] The adhesive is applied to the folded portion 33 of the release piece 31.
When one of them is grasped by inserting a finger, and the other exfoliated piece 32 is pinched and pulled, most of the adhesive layer 2 is exposed, and this is adhered to a required skin surface such as an affected part. Further, the whole is adhered while pinching and peeling the folded portion 33 of the strip 31. In this case, the release strip 32 is peeled off the substrate, because still carrier sheet is temporarily adhered, or Tsu ShiwagaYadoriki the substrate flexibility, so that the adhesive layer each other to adhere
Such that no, it is possible to reliably pasted on the skin surface in the presence of moderate waist width adherend surface Dattari joints other curved and also provided the strain on the carrier sheet when there is uneven impossible without the skin because the split is absorbed with
It can be stuck with chitin along the surface .

The carrier sheet temporarily attached to the attached base material is provided with a split having a gap having an appropriate width, so that the carrier sheet can be easily picked from the split portion. Carrier sea when pulled
Toward the door to the peripheral side to the skin surface it collected stripped smoothly
Make sure that the attached base material does not peel off.
Can it to really stuck. The base material adhered to the adhered portion keeps the adhered state, expands and contracts moderately, and adapts well to the movement of the body.

In the embodiment shown in FIG. 3, a folded portion 35 is provided on a large release piece 34 of the release paper 3 so that a small release piece 36 overlaps the folded portion 35. In this case, it is preferable to first peel off the small peeling piece 36 and affix this portion to the skin surface, then peel off the large peeling piece 34 and affix the whole, and then peel off the carrier sheet.

In FIG. 4, the split 5 provided on the carrier sheet 4 is formed in a straight line, and in FIG. 5, the linear split is formed diagonally. FIG.
In this case, a linear split is provided obliquely at a corner of a carrier sheet.

FIG. 7 shows a structure in which two linear splits are provided in parallel, and the carrier sheet is divided into three sheet pieces 43, 44, and 45. And the number of splits can be further increased as the case may be.

FIGS. 8 and 9 show a tape-shaped mouthpiece 7 formed on the carrier sheet of the split zone 53. This mouthpiece is a carrier sheet. Can be made by sticking an adhesive tape on the surface of the product, attaching a plastic or paper sheet with an adhesive, adhesive, double-sided tape, or heat sealing, and using this as a clue to the carrier sheet from the split. Also becomes easier. If the mouthpiece is colored in a color different from that of the carrier sheet, the position of the split can be seen at a glance, making it easier to use.

FIG. 10 shows a state in which a portion 71 of the opening 7 on the split side is adhered to the carrier sheet 4 and a portion 72 remote from the split is not adhered. Is easy to pick and the carrier sheet can be easily peeled off, so that it is easy to use even if the gap between the splits is small.

In FIG. 11, the mouthpiece 7 is formed so as to project toward the gap 51 of the split, and when the portion 73 projecting above the gap 51 is pinched, the carrier sheet can be easily formed. Can be removed. In FIG. 12, the carrier sheet of the split portion is folded back on both sides to form the mouthpiece 7. The folded portion 74 can be left folded, or the carrier sheet can be sealed with an adhesive or heat seal. Or tapes such as other plastics and papers can be attached to the sheet side. In some cases, the carrier sheet of the split portion may be folded back only on one side, and the opening piece may be provided on only one side. These can be suitably used when the gap between the splits provided on the carrier sheet is relatively wide.

The patch shown in FIG. 13 has a non-woven fabric, compressed cotton, gauze or other patch 8 fixed on a pressure-sensitive adhesive layer of a base material. And can be effectively used for treating wounds and other wounds.

[0020]

[Effect of the Invention] As described above, the present invention can be easily applied to the skin surface of an affected part or the like and the carrier sheet can be easily peeled off, so that the treatment can be performed smoothly. -Sheet, wound treatment sheet, catheter protection sheet, catheter fixing sheet, transdermal drug administration sheet, cataplasm, osmotic bond and other medical and other adhesive patches Can be used widely.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of FIG. 1;

FIG. 3 is an enlarged cross-sectional view of another example.

FIG. 4 is a plan view of another example.

FIG. 5 is a plan view of still another example.

FIG. 6 is a plan view of another example.

FIG. 7 is a plan view of still another example.

FIG. 8 is a plan view showing another example.

FIG. 9 is an enlarged cross-sectional view of FIG. 8;

FIG. 10 is an enlarged cross-sectional view showing another example.

FIG. 11 is a cross-sectional view illustrating a further example in which the thickness is enlarged.

FIG. 12 is an enlarged sectional view of another example.

FIG. 13 is an enlarged cross-sectional view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2 Adhesive layer 3 Release paper 4 Carrier sheet 5 Split 51 Gap 6 Adhesive material 7 Cut piece 8 Patch material

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomio Hayashi 1713 Nichiban Medical Co., Ltd. 1713 Zenmon Bridge Inside Nichiban Medical Co., Ltd. (56) References JP-A-62-77314 (JP, A) JP-A-60-168450 (JP, A) Real opening Sho 62-42814 (JP, U) Real opening Akira 62-42813 (JP, U) (58) Fields studied (Int. Cl. ⁶ , DB name) A61K 9/70 A61F 13/02

Claims (4)

(57) [Scope of request for utility model registration] 1. It has a sheet-like base material having flexibility,
An adhesive layer is provided on one surface of the base material, the surface of the adhesive layer is covered with release paper, and a carrier sheet having a higher rigidity than the base material is temporarily attached to the other surface of the base material. the splits into a plurality of pieces provided, the split patch that by gaps Ru is Sons <br/> urchin formed adjacent carrier sheet portion 0.5~10mm width pieces. 2. The patch according to claim 1, wherein a slit is formed in the split zone of the carrier sheet with the split interposed therebetween. 3. A patch according to claim 2, wherein said mouthpiece is made in a different color from the carrier sheet. 4. The patch according to claim 1, wherein a patch for contacting the affected part is fixed on the pressure-sensitive adhesive layer of the base material.