JPH1085253A - Support for medical instrument indwelled in living body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent itching and reddening by preventing the skin of the patient from being dehydrated and dried excessively, to make a support easier to handle, and to prevent skin maceration and viral infections. SOLUTION: This support comprises an absorbing pad 1 made of a polyurethane foam sheet constructed of a continuous foam layer with a flat glazed surface 11 on one side thereof; a protective sheet 2 comprising a non-foaming sheet being large enough to cover the absorbing pad 1 and having a pressure- sensitive adhesive 21 applied to one side thereof; and releasable paper 3. The continuous foam layer of the absorbing pad 1 is placed on the pressure-sensitive adhesive side of the protective sheet 2, the releasable paper 3 is bonded to the pressure-sensitive adhesive surface of the protective sheet 2 to envelope the absorbing pad 1 with the protective sheet 2 and the releasable paper 3, and a slit 4 is formed almost halfway between the absorbing pad 1 and the protective sheet 2 in such a say as to completely cut the protective sheet 2 and the absorbing pad 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for accurately and reliably holding in-vivo indwelling medical devices such as catheters and tubes used in a state of being inserted into a living body.

[0002]

2. Description of the Related Art A so-called indwelling medical device such as a catheter for peritoneal dialysis, an outer shaft for hemodialysis, a tube for drainage of ascites fluid, and a subcutaneously implanted drug reservoir which is used while being inserted into the body of a patient ( After being inserted into a patient's vein, muscle, or subcutaneous location, the patient may twist or flip the body, and the inserted medical device may be subject to external forces or the like. Even if it moves, it must be securely held so as not to move from the inserted position.

[0003] Usually, a support for holding the medical device includes a cotton gauze that has been disinfected and sterilized. The cotton gauze covers all or a major part of the medical device inserted into the body of a patient. Is attached and locked to the patient's skin by an adhesive tape. In addition, a water-resistant adhesive is applied to a thin transparent polyurethane film or the like, and the film is adhered and locked to the patient's skin in the same manner as above using a film dressing material on which a removable release paper is attached. That has been done.

[0004] However, in the former case of using cotton gauze and adhesive tape, the cotton gauze excessively dehydrates and dries the site due to the absorbent fibrous material, and as a result, the cotton gauze becomes strongly adhered, and the tape is strongly adhered. There is a problem that peeling the cotton gauze from the skin is painful and may further damage the skin.

[0005] In addition, in the latter case where the film is supported by a film dressing material, although the film itself has a water vapor permeability sufficient to maintain skin respiration, it is difficult to absorb a large amount of exudate exuded from the site. It is. Further, repeated replacements are not preferable because they cause pain to the patient and, at the time of replacement, expose the site to bacteria carried by air. Furthermore, skin maceration may occur due to insensitive evaporation, and infection due to the preservation of bacteria due to accumulation of exudate may occur.

[0006]

SUMMARY OF THE INVENTION The present invention provides a catheter,
A medical device support such as a tube that can reliably support a medical device such as a tube, and that can maintain skin respiration properly and absorb exudate exuded from a site to prevent transmission to the outside. The gist of the invention is that an absorbent pad 1 made of a polyurethane foam sheet having a smooth glossy surface 11 formed on one side of a continuous foam layer, and an absorbent pad 1 large enough to cover the absorbent pad 1 A protective sheet 2 in which a pressure-sensitive adhesive 21 is applied to one side of a non-foamed sheet;
The continuous foam layer of the absorbent pad 1 is disposed on the pressure-sensitive adhesive side of the protective sheet 2, and the release paper 3 is adhered to the pressure-sensitive adhesive surface of the protective sheet 2 to protect the absorbent pad 1. While being surrounded by the sheet 2 and the release paper 3, the absorbent pad 1
And a support 4 for a medical device, wherein a slit 4 is formed at a substantially central portion of the protective sheet 2 so as to completely cut the protective sheet 2 and the absorbent pad 1.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the support of the present invention is shown in FIG. 1 in a sectional view and a plan view corresponding to the sectional view. The main part of the support of the present invention, that is, the absorbent pad 1 of the part directly in contact with the site,
Since it is made of a polyurethane foam sheet that has water vapor permeability and gas permeability but does not allow exudate to pass through, it can maintain a favorable environment for the site. In addition, the smooth glossy surface 11 formed on one side of the continuous foam layer of the polyurethane foam sheet can prevent the absorption pad from adhering to the site. Here, the continuous foam of the continuous foam layer has an irreversible and partially crushed continuous foam shape and can absorb exudate, but the absorption is so large that the site can be in a dry state. It does not extract exudate.

The polyurethane foam sheet used in the absorbent pad 1 of the present invention is based on a polyester or a polyether, for example, a polymerization product of an isocyanate and a polyoxyethylene polyol, which is added to an alkylene oxide surfactant. Which have been added to improve the hydrophilicity can be suitably used.

The step of forming a polyurethane foam sheet using the above-mentioned isocyanate or the like may be carried out according to a known method. The isocyanate protected with a capping agent and polyoxyethylene polyol, and further, an alkylene oxide surfactant are used. A cross-linking agent or a catalyst is added to the mixture, and this is applied to a sheet of glossy release paper in a predetermined thickness, and then heated to form a continuous foam layer having a smooth glossy surface on the lower surface. Generate Then, the absorbent pad 1 can be obtained by heating and pressurizing the sheet, specifically, irreversibly and partially crushing the foam cells of the continuous foam layer with a heating plate or a heating roller. .

The heating temperature is higher than the softening temperature of the polyurethane foam, for example, 140 to 240 ° C., preferably 190 to 210 ° C. The pressure is
For example, 14 kg / cm ² or less, preferably 3.5 to 7 k
g / cm ² is desirable.

The thickness of the absorption pad 1 should be as large as possible to absorb exudate exuded from the site to prevent the permeation to the outside and to securely support medical devices such as catheters and tubes. However, from the viewpoint of maintenance of skin respiration, generally 0.5 cm to 5 cm, preferably 0.6 c
A range of m to 2 cm is desirable.

The protective sheet 2 is adhered to the continuous foam layer side of the absorbent pad 1 with a pressure-sensitive adhesive, and is a water-repellent sheet for preventing moisture from entering from outside.
A non-foamed sheet made of the same polyurethane resin as the absorbent pad 1 can be used, and the molding is performed in the molding step of the absorbent pad 1 except for the heating and pressurizing steps. A range of １1 cm is preferred.

The size of the protective sheet 2 is large enough to cover the absorption pad 1, for example, the absorption pad 1
Is further added with a width of 2 cm to 4 cm. As the pressure-sensitive adhesive applied to the protective sheet 2, an acrylate-based adhesive can be used.

The release paper 3 surrounding the absorbent pad 1 can be removed from the protective sheet 2 before using the support, and wax-impregnated paper is used. Slit 4 formed in absorption pad 1 and protection sheet 2 having the above contents
Is for supporting and inserting a medical device such as a catheter, a tube or the like for supporting and supporting the medical device.
Various shapes such as an (eye) type, a Y (y) type, an X (X) type, a type in which I is disposed at the intersection of X, and a type in which a small diameter hole is disposed at the apex of I are possible. It is preferable that the protective sheet 2 has a cross shape including a horizontal slit and at least one slit is provided up to one edge of the protective sheet 2. The depth of the slit 4 needs to be provided substantially at the center of the absorption pad 1 and the protection sheet 2 so as to completely cut both the protection sheet 2 and the absorption pad 1.

Using the support of the present invention, a catheter,
In order to support a medical device such as a tube on the patient's skin, first, the periphery of the patient's skin into which the catheter, the tube, etc. have been inserted is sufficiently cleaned by disinfection, and then the support of the present invention is peeled off. The paper 3 is removed from the pressure-sensitive adhesive surface of the protective sheet 2, the support is moved in parallel with the skin while further expanding the slit 4, and a catheter, a tube, and the like are inserted through the slit 4, and then the skin is exposed. The medical device is supported on the patient's skin by sticking the pressure-sensitive adhesive surface of the protective sheet 2 of the support. When the medical device is a short shape such as a drain tube, the slit 4 is formed on the protective sheet 2.
May be a length that does not reach the one edge.

[0016]

As described above, according to the support of the present invention, it is possible to prevent the skin of a patient from being excessively dehydrated and dried, to prevent itching and redness, to be easy to handle, and to make the skin macerated. And bacterial infections can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of the support of the present invention (top).
And the corresponding plan view

[Explanation of symbols]

 1. Absorbing pad 2. Protective sheet 3. Release paper 4. Slit

Claims (2)

[Claims] 1. A smooth glossy surface (1) on one side of a continuous foam layer.
An absorbent pad (1) made of a polyurethane foam sheet formed with 1), and a pressure-sensitive adhesive (2) on one surface of a non-foamed sheet large enough to cover the absorbent pad (1).
A protective sheet (2) coated with 1) and a release paper (3), a continuous foam layer of an absorbent pad (1) is arranged on the pressure-sensitive adhesive side of the protective sheet (2), and a release paper is further provided. (3)
Is adhered to the pressure-sensitive adhesive surface of the protective sheet (2) to surround the absorbent pad (1) with the protective sheet (2) and the release paper (3), and the absorbent pad (1) and the protective sheet (2) A support for an in-vivo indwelling medical device, wherein a slit (4) is formed so as to completely cut the protective sheet (2) and the absorption pad (1) substantially at the center. 2. An absorbent pad (1) and a protective sheet (2).
The slit (4) formed substantially at the center of the protective sheet (2) has a cross shape comprising a vertical slit and a horizontal slit, and at least one slit is provided up to one edge of the protective sheet (2). 2. A support for the in-vivo indwelling medical device according to 1.