JPH09192155A - Pouch for pouch drainage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent waste fluid from oozing out through an air filter even after contacting for a long time by providing the pouch with a bag object, which is coupled to the surrounding of an opening, on the non-contact skin side of a contact skin part having the opening, and fitting the resin air filter having air ventilation property and waterproofing property to the bag body. SOLUTION: A contact skin part 1 has an opening 2 corresponding to a drain hole to be mounted, and a laminate film 3 is put on the surface on the non-contact skin side. A bag body 4 coupled to the periphery of the opening 2 on the non-contact skin side of the contact skin part 1 is formed as a vessel for storing waste liquid drained fro the drain hole through the opening 2 of the contact skin part 1, and a drain tube 5 is connected to the lower end part of the bag body 4. A cap 7 is fitted by forming an opening 6 at a position almost facing the opening 2 of the bag body 4. Then, an air filter 14 composed of a resin having air ventilation property and waterproofing property is fitted inside a main body 10 of cap by thermal melt-sticking so as to face a hole 13 pierced at the upper part of the main body 10 of cap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouch drainage or so-called pouch drainage, which is used in a method called pouch drainage or pouching method for controlling excretory openings such as stoma, fistula and drain. For pouches.

[0002]

The amount of time and energy spent in wound care in patient care after surgery is enormous, most of which is the replacement of so-called gauze dressings. This gauze
Dressing also causes great pain to the patient, is expensive, and is not always efficient for all patient care. As an alternative to this gauze dressing method, a pouch drainage method has been devised, and it is a method of managing by mounting a pouch on the excretion port of a stoma, a fistula, a drain, etc. Fistulas that require replacement of gauze and dressing, or open wounds that produce drainage There is a foul odor in the drainage There is drainage with high skin irritation If you want to perform accurate drainage management Perform drainage management in a closed manner It is attracting attention as a material that can be adapted to most things.

[0003] A typical orthosis for carrying out the pouch drainage method is a bag body connected around the opening of the skin-contacting portion having an opening. There are two types of drug formulations, which are fixed to the excretory mouth with this skin part, guide the drainage discharged from the excretory mouth into the bag body, and in some cases drainage tube connected to the end of the bag body It is designed to lead to a bag. When drainage is performed by mounting such a brace, the bag body is in a closed state and a negative pressure is generated, so that the flow of drainage is deteriorated.
In addition, if gas etc. from the abdominal cavity due to post-operative drain etc.,
The inside of the bag becomes positive pressure and expands, and when the pressure is large, the bag may burst. In order to solve this problem, an air filter is attached to the top of the dome-shaped cap that is openable and closable in the bag so that it almost faces the opening of the skin for the purpose of facilitating postoperative care. It is practiced to prevent negative or positive pressure from developing inside the body. This air filter is usually made of non-woven fabric, and it has a very small filter gap to prevent the passage of bacteria. It prevents the negative pressure and positive pressure in the bag and keeps the bag sterile. be able to. However, if there is a large amount of drainage that reaches the top of the cap, or if the drain tube connected to the bag body contacts the top of the cap, the drainage will contact the nonwoven fabric of the air filter and bleed from the nonwoven fabric. The sterilized condition inside the bag is broken and there is a risk of bacterial infection. For this reason, conventionally, when liquid is about to seep out of the air filter,
We have responded by attaching tape to the opening of the air filter and blocking it from the outside, but as a result, the inside of the bag is sealed, negative pressure, positive pressure is induced, the flow of drainage becomes worse, the bag There was a problem that my body was inflated.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to allow the drainage liquid to pass through the air filter even if the drainage liquid is in contact with the air filter provided for preventing negative pressure and positive pressure in the bag body for a long time. It is to provide a pouch for drainage that does not seep outside.

[0005]

In order to achieve the above-mentioned object, the present invention comprises a skin-wrapping portion having an opening and a bag body connected to the periphery of the opening on the non-skin-wrapping side of the skin-wrapping portion. An air filter made of resin having air permeability and waterproofness is attached to the bag body.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a skin-contacting portion having an opening corresponding to an excretory port such as a stoma, a fistula, or a drain of a human body, and the periphery of the skin-contacting portion on the non-skin-contacting side of the skin-contacting portion And a bag body that stores the liquid drained from the drainage port,
An air filter made of a resin having air permeability and waterproofness may be attached to the upper portion of the bag body. Further, a cap that can be opened and closed may be provided at a position of the bag body that is substantially opposed to the opening of the skin part, and an air filter made of resin having air permeability and waterproofness may be attached to the cap.

As a resin having air permeability and waterproofness of an air filter, there is a fluororesin such as PVDF.
(Vinylidene fluoride resin), PTEE (tetrafluoroethylene resin), PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin), FEP (tetrafluoroethylene-hexafluoropropylene copolymer resin), ETFE
(Tetrafluoride ethylene-ethylene copolymer resin), PCTF
E (trifluorochloroethylene chloride resin), PVF (polyvinyl fluoride), ECTFE (trifluorochloroethylene-ethylene copolymer resin) and the like can be used. Of these, PVDF is particularly preferable. PVDF has a melting point of 185 ° C.
In terms of processability at ordinary processing temperature (200 ° C. to 280 ° C.), it has properties close to those of general thermoplastics. In this respect, the heat-welding processing technique that is generally used for producing pouches can be directly attached to the air filter, which is advantageous in manufacturing. Further, the fluorine-based resin is stable to heat, EOG (ethylene oxide gas), ultraviolet rays and radiation, and any sterilization method can be used when sterilizing the pouch. Especially, the type of skin protectant and the pouch film. It is advantageous that the sterilization method can be selected according to the material.

The air filter is selected so that the air flow rate is 0.8 l / min or more per 1 cm ² of filtration area at 20 ° C. (± 1.5) at a pressure difference of 0.7 kg / cm ^2. There is a need to. The flow rate of this air is 0.8l
If it is less than / min / cm ² , the air will not flow easily, and if the bag is in negative pressure or positive pressure during use, the cap will be crushed, the stoma will be blocked with a pouch film, or the cap will be removed or the pouch will swell. However, in some cases, the skin protectant may be separated from the skin surface, or the seal part of the pouch may be damaged. This air flow rate is preferably 1.
2 l / min / cm ² or more, more preferably 1.7 l /
It is at least min / cm ² .

The waterproofness of an air filter is that when it is expressed in terms of the water pressure required for water to pass from one side of the filter to the other side, it can pass water even at a low pressure of 0.01 kg / cm ^2. There is no one used. On the other hand, in the high pressure region, water is impermeable even at a water pressure of 0.7 kg / cm ² or more, more preferably 1.05 kg
It is water impermeable even with a water pressure of / cm ² or more.

The pore size of the air filter is 0.2 to 5.0
μm is preferred. The larger the pore size, the better the air flow,
It is suitable for preventing negative pressure and positive pressure, but if it is too large, it will allow water and bacteria to pass through. Particularly preferred is 0.65 to 2.0 μm.

As the skin contact portion, the bag body and the cap to be attached to the bag body, those conventionally used can be used. An adhesive bond such as an acrylic adhesive bond or a rubber adhesive bond, or a skin protective agent is used as the skin-contacting portion, and a blend of a hydrophilic polymer and a hydrophobic polymer is suitable as the skin protective agent. As the laminated film provided on the non-skin side of the skin part, EVA or E
There is an MA film. EVA / PV as the material for the bag
DC / EVA three-layer deodorant film, PE / PVDC / P
Examples include E three-layer film and EVA film. EVA or PE is used for the cap attached to the bag.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

In FIG. 1, reference numeral 1 denotes a skin part, which has an opening 2 corresponding to an excretion port to be attached, and a laminate film 3 is provided on the surface on the non-skin side. Reference numeral 4 denotes a bag connected to the periphery of the opening 2 on the non-skin side of the skin portion 1, and is formed as a container for storing the drainage discharged from the discharge port through the opening 2 of the skin portion 1. A drain tube 5 can be connected to the lower end of the bag body 4. An opening 6 is provided at a position substantially opposite to the opening 2 of the bag body 4, and a cap 7 is attached to the opening 6. The cap 7 includes a base 8 fixed around the opening 6 of the bag body 4, and a dome-shaped cap body 10 connected to the base 8 by a hinge 9.
And a fitting portion 11 at the opposite portion,
It can be opened and closed freely. Reference numeral 12 is a handle for opening and closing. A hole 13 is formed in the upper portion of the cap body 10, and an air filter 1 made of a resin having air permeability and waterproofness is provided inside the cap body 10 so as to face the hole 13.
4 is attached by heat welding. The air filter 14 may be attached by adhesion.

Next, a method of using this device will be described. The skin cover 1 is fixed around the stoma so that the opening 2 of the skin cover 1 is located at the excretion port of the human body, for example, the stoma, and the cap 7 is kept closed. The drainage liquid from the stoma passes through the opening 2 and is stored in the bag body 4. Here, since the inside of the bag body 4 and the outside world are communicated with each other through the filtration gap of the air filter 14 and the hole 13 of the cap body 10, negative pressure or positive pressure is not generated in the bag body 4. In addition, even if the drainage may come into contact with the air filter 14 for a long time, the drainage does not seep out due to the property of the resin having waterproofness.
As long as the entire pouch has been previously sterilized, it remains sterile. By forming the cap body 10 transparent, the state of the stoma can be observed without opening the cap 7, and the stoma can be treated by opening the cap 7.

FIG. 2 shows another embodiment of the present invention, in which the same parts as those in FIG. 1 are designated by the same reference numerals. This embodiment differs from that of FIG. 1 in that the bag has no cap and the air filter is attached directly to the bag. That is, a hole 15 is formed in the upper part of the bag body 4, and the hole 15
The air filter 16 is placed so as to close the sheet and is joined to the bag body 4 by heat welding. This pouch is suitable for cases where prognosis observation and treatment are not required.

Next, the results of comparing the characteristics of the air filter of the present invention and the conventional air filter will be described.

An air filter according to the present invention having a filter pore size of 1.0 μm was prepared from PVDF, which is an inert, high-purity polymer, and was mounted on the pouch shown in FIG. 1 with styrene / ethylene / propylene / styrene block polymer resin 85. % And polypropylene 15%, a melt-prone nonwoven fabric (Kuraray's Septon) equipped with an air filter A mounted on a pouch similar to that shown in FIG. 1, and a polyethylene 100% spunbond nonwoven fabric ( The following table shows the results of a comparative test performed by γ-ray sterilization with an air filter B manufactured by DuPont (Tyvek) manufactured by DuPont and attached to the same pouch.

[0018]

[Table 1] Invention A B Prevention of negative pressure and positive pressure ○ ○ × Liquid leakage prevention ○ × ○ Air permeability test 2.2sec 0.07sec 20.0sec

As can be seen from this table, the present invention and the conventional example A
Was able to sufficiently prevent the generation of negative pressure and positive pressure,
It was confirmed that in Conventional Example B, the air permeability was low, negative pressure and positive pressure could not be prevented, and the drainage flow was poor. This is JIS P8
It is also proved from the result value of the air permeability test according to 117. In the air permeability test, air of the present invention is 30 times more difficult to pass air as compared with Conventional Example A, but it was a sufficient value for preventing negative pressure and positive pressure. The liquid leakage was observed by applying a load of 1 kg from the top of the bag so that the air was in contact with the surface of the air filter. In Conventional Example A, the liquid leakage was confirmed after 15 hours.

[0020]

According to the present invention, there is no risk of liquid leakage from the air filter regardless of the operating conditions,
Therefore, it is possible to prevent the invasion of bacteria from the outside world, the negative pressure is not generated in the bag body, the drainage flows smoothly, and even if gas is generated in the bag body, it is released to the outside through the air filter. Therefore, it is possible to prevent the bag body from expanding and eventually bursting.

[Brief description of the drawings]

FIG. 1 is a front view and b is a vertical side view of an embodiment of the present invention.

FIG. 2 is a front view and b is a vertical side view of another embodiment of the present invention.

[Explanation of symbols]

 1 skin contact part 2 opening 3 laminate film 4 bag body 5 drain tube 6 opening 7 cap 8 base 9 hinge 10 cap body 11 fitting part 12 opening / closing handle 13 hole 14 air filter 15 hole 16 air filter

Claims (11)

[Claims] 1. An air filter comprising a skin part having an opening and a bag connected to the periphery of the opening on the non-skin side of the skin part, the bag being made of a resin having air permeability and waterproofness. A pouch for drainage that is equipped with a pouch. 2. The pouch according to claim 1, wherein an air filter is attached to an upper portion of the bag body. 3. The pouch according to claim 1, wherein an openable and closable cap is provided at a position of the bag body substantially facing the opening of the skin-contacting portion, and an air filter is attached to the cap. 4. The pouch according to claim 1, wherein a vinylidene fluoride resin is used as a resin for the air filter. 5. The pouch according to claim 1, wherein a tetrafluoroethylene-hexafluoropropylene copolymer resin is used as the resin for the air filter. 6. A tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin is used as a resin for an air filter.
Pouch described in one. 7. The pouch according to claim 1, wherein a tetrafluoroethylene-ethylene copolymer resin is used as a resin for the air filter. 8. A trifluorochloroethylene resin is used as a resin for an air filter.
The pouch according to any one of 3 above. 9. The pouch according to claim 1, wherein a tetrafluoroethylene resin is used as a resin for the air filter. 10. A polyvinyl fluoride resin is used as a resin for an air filter.
The pouch according to any one of 1. 11. The pouch according to claim 1, wherein a trifluorochloroethylene-ethylene copolymer resin is used as a resin for the air filter.