JP2006116162A - Negative pressure containment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simplified negative pressure containment system without providing medicine nor using any foreign body such as an absorbing pad or the like, which covers and vacuum a wounded surface due to skin ulcer such as decubitus or the like, or defective tissue. <P>SOLUTION: The negative pressure containment system to cover and vacuum the wounded surface due to skin ulcer or defective tissue includes a transparent cover 1 to cover the wounded surface, which is strong enough so as not to touch a bottom part of the wound when vacuums, at least one drain pipes 2 piercing the cover 1, and no medicine providing pipes to provide a medicine fluid. A plurality of openings are provided at a certain range on a side surface of the wounded surface side of the drain pipe 2 and the opposite side of the drain pipe is connected to a negative pressure generating device 3, which enables the system to make a closed space between the cover 1 and the wounded surface under the negative pressure to be vacuumed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a negative pressure closure device that covers and sucks a wound surface caused by skin ulcer or tissue defect.

In general, wounds caused by skin ulcers and tissue defects such as pressure sores, which are commonly referred to as bedsores, are in a situation that must be involved not only in medical institutions but also in many other welfare facilities for the elderly. Is also one of the high-profile diseases.
Therefore, the Japanese Society of Pressure Ulcers has been established since 1999, and it is composed of a wide range of occupations such as nurses and nutritionists as well as doctors. The Japan Nursing Association has also nurtured certified nurses for wound care and is focusing on pressure ulcer countermeasures.
Pressure ulcer is caused by compression necrosis of the skin on the bone protrusion site due to long-term bed rest, and it is considered that the lateral displacement of the bone and skin during body movement is a major problem as a cause of remarkably slow healing.
A lot of care products for pressure ulcers such as body pressure dispersion mats are now being sold. However, with these treatments, it is difficult to obtain a lateral slip prevention effect in the treatment, and the treatment tools and products for the pressure ulcer itself are not well developed.

There are two types of treatment for pressure ulcers: conservative treatment and surgical treatment. Pressure ulcers are often not indicated for surgery because they often occur in older people with many complications and poor general condition. In addition, since the disease is highly likely to repeat, recurrence can only be temporary wound closure. Therefore, development of a therapeutic method for conservative treatment has been desired.
Therefore, negative pressure closure therapy has recently been reported as a new idea for the treatment of pressure ulcers. This is to place the drain on the ulcer, seal the entire ulcer with a film material, and place the ulcer in a negative pressure state by continuous suction of the drain, and has the following purposes.
1) Early healing of wounds
2) Control of leachate
3) Granulation promotion effect by increasing tissue oxygen concentration
4) Prevention of lateral slip However, the conventional negative pressure closure therapy has the following problems.
1) Drain requires insertion from outside the ulcer.
2) The film material still does not have a sufficient effect of preventing lateral shift.
3) Air leakage due to body movement is likely to occur (negative pressure is not continuously applied).
4) Not a simple device.

Moreover, as literature regarding negative pressure closure therapy, for example, Argenta LC and Morykwas MJ Ann. Plast. Surg. 38: 553-62, 1997. In Japan, there are Koichi Honda, Akihiko Koyama, Yuichi Suzuki et al.
These conventional methods have problems in that drain insertion from a site other than the ulcer is required and a sufficient negative pressure is not easily applied because a film material is used.
In addition, it was difficult to apply sustained negative pressure due to air leaks, and it was difficult to use clinically because there was no dedicated device.
Further, as a patent document, Japanese Patent Publication No. 2002-524109 discloses a bandage so as to cover a wound and further form a seal near the periphery of the wound and form a cavity on the wound. And a wound treatment device is disclosed that removes fluid by a fluid drainage tube.
However, the device disclosed in JP-T-2002-524109 requires a fluid supply tube for supplying a drug and absorbs the liquid by the absorbent pad. In wounds caused by or tissue defects, there are problems that supplying a drug causes tissue damage, and using a foreign substance such as an absorbent pad causes infection.
Argenta LC and Morykwas MJ Ann. Plast. Surg. 38: 553-62, 1997. Koichi Honda, Akihiko Koyama, Yuichi Suzuki, etc. Journal of Pressure Sore Society 2: 1-6, 2000 JP 2001-221724

  The present invention solves the problems of the prior art as described above, covers the surface of wounds caused by skin ulcers such as pressure ulcers and tissue defects, and sucks them by a simple device that does not use foreign substances such as absorption pads without supplying drugs. An object of the present invention is to provide a negative pressure closing device.

By supplying at least one drain pipe to a transparent cover covering the wound surface without supplying a drug, the present invention allows skin ulcers and tissues such as pressure sores by a simple device that does not use a foreign substance such as an absorption pad. The present invention provides a negative pressure closure device that covers and sucks a wound surface due to a defect, and the gist thereof is as follows.
(1) A negative pressure closure device that covers and sucks a wound surface due to skin ulcer or tissue defect, and is a transparent cover that covers the wound surface, and does not contact the bottom of the wound when sucked. A cover having a space between,
Having at least one drain pipe penetrating the cover, not having a drug supply pipe for supplying a drug fluid,
A certain range on the wound side of the drain pipe has a plurality of openings on the side surface,
By connecting the anti-wound side of the drain pipe to a negative pressure generating device,
A negative pressure closing device characterized in that the space formed between the cover and the wound can be sucked with a negative pressure.
(2) The negative pressure closing device according to (1), wherein a cleaning water supply pipe for supplying cleaning water for cleaning the wound is provided inside the drain pipe.
(3) The negative pressure closing device according to (1) or (2), wherein the negative pressure generating device has a pressure control mechanism.

  According to the present invention, skin ulcers such as pressure ulcers can be obtained by a simple device that does not use a foreign substance such as an absorption pad by passing at least one drain pipe through a transparent cover covering the wound surface without supplying a drug. It can provide a negative pressure closure device that covers and sucks the wound surface due to tissue and tissue defects, does not require a new drain insertion hole, can be used easily, and wound healing with strong negative pressure with little air leakage It has a significant industrially useful effect, such as the promotion of

The best mode for carrying out the present invention will be described in detail with reference to FIG.
1A and 1B are diagrams illustrating an embodiment of a negative pressure closing device of the present invention. FIG. 1A is a plan view and FIG. 1B is a side view.
In FIG. 1, 1 is a cover, 2 is a drain pipe, 3 is a suction pump (negative pressure generating device), and 4 is a liquid bottle.
As shown in FIG. 1, the negative pressure closure device of the present invention is a negative pressure closure device that covers and sucks a wound surface due to skin ulcer or tissue defect, and is a transparent cover that covers the wound surface. A drug supply pipe that has a cover 1 that does not contact the bottom of the wound and has a space between the wound surface and at least one drain pipe 2 that penetrates the cover 1 and supplies a drug fluid. The drain pipe 2 has a plurality of openings on a side surface in a certain range on the wound side of the drain pipe 2, and the anti-wound side of the drain pipe 2 is connected to a suction pump (negative pressure generating device) 3. Thus, the space formed between the cover 1 and the wound can be sucked with a negative pressure.

In the present invention, by providing at least one drain pipe 2 penetrating the transparent cover 1 covering the wound surface, air does not leak from the gap between the films covering the wound surface as in the prior art. Since it is made of a transparent resin that does not come into contact with the bottom of the wound when sucked and has a space between the wound surface, a space can be created between the cover 1 and the surface of the wound, and negative pressure can be effectively applied. Can be formed.
Also, by allowing the drain pipe 2 to penetrate the cover 1 and integrating the drain pipe 2 with the cover 1, the drain pipe 2 can be inserted directly into the wound as shown in FIG. There is no need to insert a drain pipe from a place other than the wound, and it can be used easily, and even if the drain pipe 2 is tilted, there is no fear of air leaking between the cover 1 and wound healing with a continuous strong negative pressure. Can be promoted.

In addition, since the present invention does not use a drug supply pipe, it does not cause tissue damage due to the drug, and it is not difficult to maintain a negative pressure with the drug supply, and the colored fluid supply is the same device. Since it is not performed in the interior, the transparency of the apparatus is not hindered, and there is no fear of infection because no foreign matter such as an absorbent pad is used.
The negative pressure closing device can reduce the total area by attaching the cover 1 so as to cover the wound surface and operating the suction pump (negative pressure generating device) 3 to apply negative pressure to the wound surface. . In addition, the oxygen partial pressure of the tissue decreases, and wound healing is promoted. In addition, the negative pressure allows the skin and the ulcer bottom to be in close contact with each other, and can eliminate elements that are disadvantageous to wound healing, such as displacement due to body movement.

In addition, by using a material such as resin that is harder than the conventional film as the cover 1 material, it is possible to promote wound healing with a more appropriate negative pressure and to reduce leakage, and the cover 1 is transparent. By doing so, even if the cover is not removed, the healing state can be confirmed without bringing the wound into contact with the outside air.
In addition, by providing a plurality of openings in a certain range of side surfaces at the wound-side tip of the drain pipe 2, body fluid generated in the wound can be effectively sucked out.
In the present invention, the shape and the number of the drain pipes 2 are not limited. However, the drain pipe 2 can be bent according to the shape of the wound and a plurality of the drain pipes 2 can be effectively sucked. In addition, the material of the drain pipe 2 is preferably a material that does not adhere to wounds such as silicon.
Further, by providing a cleaning water supply pipe for supplying cleaning water for cleaning the wound inside the drain pipe, the inner surface of the wound can be cleaned and sucked at the same time, thereby further promoting wound healing. In addition, since the cleaning water supply pipe is provided inside the drain pipe, it is not necessary to increase the number of pipes.
In addition, the suction pump (negative pressure generating device) 3 used in the present invention is provided with a pressure control valve, for example, to adjust the suction pressure, thereby performing suction at an appropriate pressure according to the healing situation of the wound. it can.

Furthermore, the negative pressure closure device of the present invention has various features as follows.
1) Since it is a simple one that does not have various monitors such as drugs and temperature control, it is simple and easy to handle, easy to use for wound treatment, and simple and easy to spread in multiple facilities.
2) It can be worn only on the wound site, and it is not necessary to use a bandage. The patient can operate without mistakes and is highly safe.
3> Home management is possible, and outpatient treatment is possible.
4) Since the cover covering the wound surface uses a flexible but thick material, it is similar to the strength of normal skin and subcutaneous tissue, and the cover itself has the concept of skin substitute.
5) Since the drain pipe can be inserted into the deep part of the wound, effective negative pressure can be applied to the wound that forms a deep or wide pocket, the dead space is reduced, and the exudate can be sufficiently sucked. Therefore, it is suitable for the treatment of intractable ulcers such as deep or wide pressure ulcers.
6) In deep skin ulcers, healing tends to be delayed due to lateral displacement of hard tissues (bones, etc.) and soft tissues (skin, subcutaneous fetuses, etc.) during body movement. By using a cover with such strength, it is possible to reduce the lateral shift due to body movement and to promote healing.
7) The length of the drain and the size of the cover can be adjusted freely according to the condition of the wound.
8) The shift prevention effect due to body movement also reduces epidemics.
9) Simple equipment and low manufacturing cost.

FIG. 2 is a view showing an embodiment of the negative pressure closing device of the present invention.
In FIG. 2, 1 is a cover, 2 is a drain pipe, 3 is a suction pump (negative pressure generating device), 4 is a liquid bottle, and 5 is a wash water supply pipe.
FIG. 2 (a) is a diagram showing a state before treatment in a pressure ulcer wound.
As shown in FIG. 2 (a), the wound extends deep into the skin, resulting in a tissue defect.
Therefore, using the negative pressure closing device of the present invention, first, cleaning water was supplied to the wound from a cleaning water supply pipe provided inside the drain pipe and cleaned.
In the present invention, the washing water supply method is not limited, but as shown in FIG. 2 (a), there is a method of injecting the washing water into the washing water supply pipe provided inside the drain pipe using, for example, a syringe. preferable.
Next, when the fluid in the wound was sucked using the suction pump (negative pressure generating device) 3, the cover 1 was in close contact with the surface of the wound, and a space was created between the cover 1 and the surface of the wound. I was able to suck it well.
When this suction operation was repeated, as shown in FIG. 2 (b), the bottom of the wound was raised, and the wound could be completely cured.
As shown in the clinical results of applying the negative pressure closure device of the present invention below, it was confirmed that the present invention can effectively treat a skin ulcer such as a pressure ulcer and a wound caused by a tissue defect.

<Case 1> 54-year-old female Sacral pressure ulcer Although she had undergone total gastrectomy for gastric cancer, she was forced to continue the postoperative position and formed a pressure ulcer in the sacral region 3 days after the operation. The pressure ulcer was accompanied by bone exposure, a large pocket under the skin, necrotic tissue attached, and infection.
The treatment was continued by applying an ointment for about 2 months, but the wound was not reduced at all, and was introduced to the present inventor.
After hospitalization, the necrotic tissue was surgically removed, the wound was washed, and treatment was started with this device. With this device, wound contamination due to feces could be prevented, and no negative pressure leaked. Two weeks after the operation, the ulcer area was reduced to ½, and then the patient was treated at the outpatient clinic. The ulcer healed in about 40 days.
<Case 2> A 67-year-old female. Sacral burn ulcer. Lifesaving was performed by several operations (skin transplantation). Initially, the burn on the sacrum was a shallow ulcer, but with continued recumbence, the depth gradually increased with the same mechanism as pressure ulcer, with bone exposure, forming a large pocket under the skin, and necrotic tissue attached It became a state to do. Therefore, after the necrotic tissue was surgically excised, mounting of this device was started. With this device, wound contamination due to feces could be prevented, and no negative pressure leaked. In about a week, the total area was reduced to 1/2, and in 2 weeks the wound was healed. Since all wounds due to burns were closed, he was transferred to another hospital for rehabilitation.
<Case 3> 78-year-old male sacral burn ulcer The sacrum and buttock were burned with hot water and treated conservatively. The wound of the buttocks healed in about 3 weeks, but the wound of the sacrum gradually progressed in depth by the same mechanism as the pressure ulcer due to the continued position of the decubitus, forming a large pocket under the skin with bone exposure. It became a state and was introduced to the present inventors. After cleaning the wound, treatment was started with this device. With this device, no negative pressure leakage occurred, and it was possible to continue wearing the device well. Two weeks after the operation, the ulcer area was reduced to ½, and then the patient was treated at the outpatient clinic. The ulcer healed in about 50 days.

It is a figure which illustrates embodiment of the negative pressure closure apparatus of this invention. It is a figure which shows the Example of the negative pressure closure apparatus of this invention.

Explanation of symbols

1 Cover 2 Drain pipe 3 Suction pump (negative pressure generator)
4 Liquid bottles 5 Wash water supply pipe

Claims (3)

A negative pressure closure device that sucks over the wound surface due to skin ulcers and tissue defects,
A transparent cover covering the wound surface, the cover not contacting the bottom of the wound when aspirated and having a space between the wound surface;
Having at least one drain pipe penetrating the cover, not having a drug supply pipe for supplying a drug fluid,
A certain range on the wound side of the drain pipe has a plurality of openings on the side surface,
By connecting the anti-wound side of the drain pipe to a negative pressure generating device,
A negative pressure closing device characterized in that the space formed between the cover and the wound can be sucked with a negative pressure.   The negative pressure closing device according to claim 1, further comprising a cleaning water supply pipe that supplies cleaning water for cleaning the wound inside the drain pipe. The negative pressure closing device according to claim 1, wherein the negative pressure generating device has a pressure control mechanism.

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