KR102594468B1 - Negative Pressure Dressing System - Google Patents

Abstract

The present invention relates to a negative pressure dressing system, comprising: a pad portion for sealing a wound area of the skin; The contracted position and expansion in which the device main body is contracted by the elastic part containing a synthetic resin material with elastic restoring force that communicates with the pad part and fills the internal space formed in the device main body to enable formation of negative pressure in the wound area below the pad part. It is characterized in that it includes a negative pressure forming device that moves between the expanded positions.
Accordingly, the negative pressure forming device, which generates negative pressure during the wound healing process, can be achieved manually through the operation of the elastic recovery force of synthetic resin and the shape of the tendon. Since it is operated manually, it does not generate noise and does not require electricity supply or the use of batteries. The economical cost is low and the structure is simple.

Description

Negative Pressure Dressing System {Negative Pressure Dressing System}

The present invention relates to a negative pressure dressing system, and specifically, improves the structure of Negative Pressure Wound Therapy (NPWT), which is designed to effectively heal wounds in the process of healing skin wounds, so that they can be used simply and conveniently. It relates to a negative pressure dressing system.

Humans are made up of various tissues, and skin is one of them.

The skin protects the human body from external stimuli, prevents moisture loss, and has important life-protection functions such as regulating body temperature and preventing bacterial invasion. If the skin is damaged due to burns or other trauma, its protective effect is lost, causing functional impairment, and various side effects such as moisture loss and bacterial infections from the outside can occur, making treatment of the affected area difficult or causing secondary damage. This may result in additional side effects such as human dysfunction or damage. In severe cases, it can even affect life extension.

Therefore, it is desirable to quickly treat wounds and minimize various secondary side effects.

Wounds created on the skin include crush wounds (fissures), scratches (abrasions), cuts (incisions), stab wounds (puncture wounds/cuts), collision wounds (bruises), scald wounds (burns), and surgical sites. There may be skin inflammation and pus due to wounds, diabetes, etc.

Negative Pressure Wound Therapy (NPWT: Negative Pressure Wound Therapy), designed to treat various types of wounds (injuries to the body that occur when the skin is torn, peeled, or punctured), is used as an adjunct to surgery. It is used in cases where surgery is not possible.

This NPWT is one of the dressing methods that inserts a material such as a sponge into the wound, seals the film, and then applies negative pressure using a connecting tube and machine to ensure that the negative pressure is evenly applied to the wound. This removes exudate or blood from the wound and increases blood flow locally, thereby reducing swelling and promoting wound healing.

A negative pressure wound device includes an adhesive semi-occlusive dressing or pad, a machine that creates a vacuum, and a discharge tank to collect exudate. It is desirable that the dressing seal the wound with a bandage or film and maintain an appropriate negative pressure to prevent the wound from drying out. The interface material is mainly polyurethane foam, which is cut to fit the wound, distributes it properly, removes body fluids, and creates a small deformation on the wound surface. The sound pressure can be adjusted from 50 to 200 mmHg, but it is mainly used around 125 mmHg and continuous or intermittent methods can be selected.

And recently, vacuum pumps have been used as vacuum forming devices to treat pressure wounds. However, these vacuum pumps have the disadvantages of being noisy, having a complicated structure, and requiring high economic costs.

Therefore, it is desirable to have a simpler structure and to be able to manually generate negative pressure intensively at the wound area at the moment when negative pressure is needed intermittently.

[references]

Publication of Patent No. 10-2011-0033264 (published on March 30, 2011):

Public Patent Publication No. 10-2008-0070338 (published on July 30, 2008)

Public Patent Publication No. 10-2008-0111837 (published on December 24, 2008)

The purpose of the present invention is to provide a negative pressure dressing system that can be achieved through the operation of the elastic restoring force and tendon shape of synthetic resin by manually using a negative pressure forming device to generate negative pressure during the wound healing process.

In addition, another object of the present invention is to provide a negative pressure dressing system that operates manually without the operation of a vacuum pump, so does not generate noise, does not require electricity supply or use of batteries, is economical, has a low cost, and has a simple structure.

In addition, another object of the present invention is to provide a negative pressure dressing system that is easy to wear and easy to use.

In addition, another object of the present invention is to provide a negative pressure dressing system that is simple and inexpensive and can be adjusted so that the generated negative pressure is gradually released.

In addition, another object of the present invention is to provide a negative pressure dressing system that can be adjusted so that the generated negative pressure can be maintained at a set minimum.

The purpose of the present invention is. A negative pressure dressing system comprising: a pad portion that seals a wound area of the skin; The contracted position and expansion of the device main body by the elastic part containing a synthetic resin material with elastic restoring force that communicates with the pad part and fills the internal space formed in the device main body to enable formation of negative pressure in the wound area below the pad part. This is achieved by a negative pressure dressing system comprising a negative pressure forming device that moves between the expanded expansion positions.

In addition, the elastic unit preferably includes a first elastic member laminated with a first thickness on the lower side, and a second elastic member filling the internal space with a second thickness on the upper side of the first elastic member.

In addition, the second elastic member includes a polyurethane material, the first elastic member includes PVA (Polyvinyl Alcohol), PVAc (Polyvinyl Acetate), or cellulose sponge, and the second thickness is It is preferably 4 to 8 times thicker than the first thickness.

In addition, the device main body includes a first casing connected by the pad portion and the suction pipe portion and a second casing coupled to the second casing to seal the internal space, and the second casing is connected to the first casing. And it is preferable that the elastic part moves to the contracted position by the user's pressing force and to the expanded position by the elastic restoring force of the elastic part.

In addition, between the device main body and the pad part, exudate is sucked from the pad part to the device main body by a suction pipe, and the exudate flowing into the device main body is drawn from the expansion position to the deflation position by the discharge pipe part. It is discharged to the outside, and the suction piping part includes a suction manual valve or suction check valve that manually opens and closes the suction piping line, which is the duct of the suction piping part, and the discharge piping part manually opens and closes the discharge piping line, which is the duct of the discharge piping part. It is desirable to include a discharge manual valve or discharge check valve that opens and closes.

In addition, it is preferable to further include a cushion tank between the pad portion and the negative pressure forming device to store exudate leaking from the pad portion.

In addition, the elastic part preferably includes a spring made of a material containing synthetic resin.

On the other hand, in the negative pressure dressing system, the pad unit seals the wound area of the skin; The contracted position and expansion of the device main body by the elastic part containing a synthetic resin material with elastic restoring force that communicates with the pad part and fills the internal space formed in the device main body to enable formation of negative pressure in the wound area below the pad part. A negative pressure forming device that moves between the expanded positions, wherein the device body has a corrugated pipe shape, the device body and the elastic portion contract by the user's pressing force, and the device body and the elastic portion contract by the elastic restoring force of the elastic portion. This is also achieved by a negative pressure dressing system, characterized in that the elastic portion expands.

In addition, the elastic part includes a first elastic member laminated with a first thickness on the lower side, and a second elastic member filling the internal space with a second thickness on the upper side of the first elastic member, wherein the second elastic member is poly. It includes a urethane material, and the first elastic member includes polyvinyl alcohol (PVA), polyvinyl acetate (PVAc), or cellulose sponge, and the second thickness is 4 to 8 times the first thickness. It is desirable to be thick.

On the other hand, an object of the present invention is to provide a negative pressure dressing system, comprising: a pad portion for sealing a wound area of the skin; A negative pressure forming device provided in communication with the pad portion and capable of forming negative pressure at the wound area below the pad portion; A cushion tank for storing and discharging exudate leaking from the pass portion between the pad portion and the negative pressure forming device, wherein the negative pressure forming device is provided in the shape of a pistol and is provided between a pressure chamber in communication with the cushion tank and a cylinder in communication. This is also achieved by a negative pressure dressing system, which includes a piston operated by a lever interlocked with a trigger.

In addition, the piston has a smaller outer diameter than the cylinder, and an O-ring that seals between the inner peripheral surface of the cylinder and the piston is coupled to an end, and three or more protrusions are formed on the outer diameter in the longitudinal direction so that the piston is positioned inside the cylinder. It guides the trigger to be movable, and when the user releases the trigger, the elastic member that elastically presses the trigger positions the O-ring part to which the O-ring of the piston is coupled to the pressure chamber by the lever interlocked with the trigger, and when the trigger is pulled, the trigger and It is preferable that the interlocking O-ring part of the piston seals between the cylinder and the piston 5410 and moves the air in the pressure chamber to the outside.

On the other hand, an object of the present invention is to provide a negative pressure dressing system, comprising: a pad portion for sealing a wound area of the skin; The contracted position and expansion of the device main body by the elastic part containing a synthetic resin material with elastic restoring force that communicates with the pad part and fills the internal space formed in the device main body to enable formation of negative pressure in the wound area below the pad part. It is also achieved by a negative pressure dressing system comprising a negative pressure forming device that moves between the expanded positions.

In addition, it is preferable to further include a stroke control unit provided to adjust a stroke between the contracted position where the device main body moves and the expanded position.

On the other hand, an object of the present invention is to provide a negative pressure dressing system, comprising: a pad portion for sealing a wound area of the skin; A synthetic resin material that communicates with the pad portion and forms an internal space in a device body provided in a roughly cylindrical shape to enable formation of negative pressure in the wound area on the lower side of the pad portion, and allows the device body to be elastically deformed so that the internal space can be contracted and expanded. It is also achieved by a negative pressure dressing system comprising a negative pressure forming device including a.

In addition, it is preferable to include a negative pressure control holding member made of a synthetic resin material containing elastically deformable silicon and provided in a shape to surround a portion of the circumference of the device body.

In addition, the circumference of the device main body gradually increases from the upper side to the central side, and the circumference gradually decreases as it moves from the central side to the lower side where the suction port communicating with the pad portion is formed. It shrinks by pressing the circumference and returns to its original state when the pressing force is removed. It is preferable to include a structure in which wrinkles are formed in the vertical direction, so that the internal space is reduced when pressed down, and then returns to its original state when the pressing force is removed.

According to the present invention, it is possible to provide a negative pressure dressing system that can be achieved through the operation of the elastic restoring force and tendon shape of synthetic resin by manually using a negative pressure forming device that generates negative pressure during the wound healing process.

In addition, since it operates manually without the operation of a vacuum pump, it is possible to provide a negative pressure dressing system that does not generate noise, does not require electricity supply or use of batteries, is economical, has a low cost, and has a simple structure.

In addition, it is possible to provide a negative pressure dressing system that is easy to wear and easy to use.

In addition, it is possible to provide a negative pressure dressing system that is simple and inexpensive and can be adjusted so that the formed negative pressure is gradually released.

Additionally, it is possible to provide a negative pressure dressing system that can be adjusted so that the generated negative pressure can be maintained at a set minimum.

1 is a schematic diagram of a negative pressure dressing system according to an embodiment of the present invention;
Figures 2a and 2b are schematic diagrams for explaining the operating process of Figure 1;
Figure 3 is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention;
Figure 4 is a cross-sectional view of a negative pressure forming device according to another embodiment of the present invention;
5 is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention;
6A to 6C are schematic diagrams of a negative pressure dressing system according to another embodiment of the present invention;
Figure 7 is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention;
8 is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention;
9A is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention;
FIGS. 9B to 9E are schematic diagrams for explaining an embodiment different from the operating process of FIG. 9A;
Figures 10a and 10b are schematic diagrams of a negative pressure forming device or device main body of a negative pressure dressing system according to another embodiment.

The negative pressure dressing system (1000, hereinafter referred to as ‘negative pressure dressing system’) according to embodiments of the present invention will be described in detail with reference to FIGS. 1 to 10B as follows.

Figure 1 is a schematic diagram of a negative pressure dressing system according to an embodiment of the present invention, Figures 2A and 2B are schematic diagrams for explaining the operation process of Figure 1, and Figure 3 is a negative pressure dressing system according to another embodiment of the present invention. is a schematic diagram, Figure 4 is a cross-sectional view of a negative pressure forming device according to another embodiment of the present invention, Figure 5 is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention, Figures 6a to 6c are the present invention is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention, Figure 7 is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention, and Figure 8 is a schematic diagram of a negative pressure dressing system according to another embodiment of the present invention. 9B to 9E are schematic diagrams for explaining an embodiment different from the operating process of FIG. 9A, and FIGS. 10A and 10B are schematic diagrams of a negative pressure forming device or device main body of a negative pressure dressing system according to another embodiment.

Before explaining the present invention in more detail, since the present invention can make various changes and take various forms, implementation examples (or embodiments) will be described in detail in the text. . However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

In each drawing, the same reference signs, especially the tens and ones digits, or the same tens, one's, and alphabets, indicate members having the same or similar functions, and unless otherwise specified, each of the drawings The member indicated by the reference sign can be understood as a member that complies with these standards.

In addition, in each drawing, the components are expressed exaggeratedly large (or thick), small (or thin), or simplified in size or thickness in consideration of convenience of understanding, etc., but as a result, the scope of protection of the present invention is interpreted as limited. It shouldn't be.

The terms used in this specification are merely used to describe specific implementation examples (sun, aspect, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as ~include~ or ~consist of~ are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

<First embodiment>

As shown in FIGS. 1 to 2B, the negative pressure dressing system 1000 according to an embodiment of the present invention includes a pad portion 1500 that seals the wound area of the skin; An elastic part 1160 comprising a synthetic resin material with elastic restoring force that communicates with the pad part 1500 and fills the internal space formed in the device body 1110 to enable negative pressure to be formed in the wound area below the pad part 1500. It includes a negative pressure forming device 1100 that moves the device body 1110 between a contracted position (see cross-section of Figure 2a) and an expanded expansion position (see cross-section of Figures 1 and 2b). desirable.

The device body 1110 is generally provided in a cylindrical shape, with a first casing 1113 provided on the lower side with a smaller diameter and a second casing ( 1115).

The material of the device body 1110 is preferably made of stainless steel or synthetic resin that is sturdy, resistant to antibacterial and sterilization, and can be kept clean.

The second casing (1115) located on the upper side is attached with a handle (1140) that the user can hold and press, and the cylindrical lower end protrudes from the inner circumferential surface of the second casing (1115) to the outer circumferential surface of the first casing (1113). A cap 1150 is provided that is coupled with a plurality of fastening bolts (not shown) so that it can be coupled to the first casing 1113.

The area where the cylindrical shape of the second casing 1115 and the cap 1150 are combined is joined with an O-ring 1137 that seals to create negative pressure in the internal space of the device body 1110.

In the lower central area of the first casing 1113, an inlet 1103 is provided in communication with the pad portion 1500, and an outlet 1105 is provided on the lower side for discharging exudate flowing into the internal space of the device body 1110.

The outlet 1105 is in communication with the side of the device main body 1110, but of course, if necessary, it may be in communication with the inlet 1103 and branched into a T-shape.

A sealing portion 1130 is provided to seal the internal space from the outside while the first casing 1113 and the second casing 1115 move between the contracted and expanded positions.

The sealing portion 1130 is formed in an externally protruding area on the upper side of the first casing 1113 and is located on the lower side of the first sealing groove 1131 and the second casing 1115 to which the O-ring 1137 can be coupled. It is formed on the cap 1150, which is a protruding area, and consists of a second sealing groove 1135 into which the O-ring 1137 can be coupled. In addition, in the process of moving the second casing 1115 relative to the first casing 1113, the elastic portion 1160 with elastic restoring force is between the outer peripheral surface of the first casing 1113 and the inner peripheral surface of the second casing 1115. A sealing skirt 1133 is provided at an angle at the upper end of the first casing 1113 and close to the inner peripheral surface of the second casing 1115 to prevent insertion or pinching.

Meanwhile, at least 3 to 4 (on the central axis) coupled to the second casing 1115 so that the second casing 1115 can rise to its maximum relative to the first casing 1113 and maintain its position stably in the expanded position. It is preferable to include a stopper 1170 radially oriented at 120 degrees with respect to - in three cases, radially oriented at 90 degrees with respect to the central axis. Of course, even if there is no such stopper 1170, the area where the first sealing groove 1131 is located and the area where the second sealing groove 1135 is located may be in an expansion position in the approaching area, but as shown in FIG. 1, the first sealing groove 1131 ) and the presence of a stopper 1170 in the middle of the second sealing groove 1135 will help maintain the stable operation of the device body 1110.

The elastic portion 1160 is a core component of the present invention and is preferably made of a multi-layered elastic member with large voids and elastic restoring force.

The elastic portion 1160 includes a first elastic member 1161 laminated with a first thickness (see 't1' in FIG. 1) on the lower side, and a second thickness ('in FIG. 1) on the upper side of the first elastic member 1161. It is preferable to include a second elastic member 1163 that fills the internal space (see t2').

The second elastic member 1163 includes a polyurethane material, and the first elastic member 1161 includes PVA (Polyvinyl Alcohol), PVAc (Polyvinyl Acetate), or cellulose sponge. The thickness is preferably 4 to 8 times thicker than the first thickness.

The gap of the second elastic member 1163 is larger than that of the first elastic member 1161. For example, the pores of the second elastic member 1163 are 200 to 300 microns and the porosity ranges from 90 to 95%, and the pores of the first elastic member are smaller than this.

The PVA, PVAc, or cellulose sponge that makes up the first elastic member 1161 is a material with a very high expansion rate, which is the degree to which it expands when it absorbs moisture. Therefore, when the exudate flows into the device body 1110 by negative pressure from the pad unit 1500, the moisture contained in the exudate flows into the internal space and the first elastic member 1161 expands to provide elastic restoring force.

Photos showing the state before and after the first elastic member 1161 is compressed are shown in <Table 1>.

division inflated state Contracted (compressed) state picture

In addition, the second elastic member 1163 can provide elastic restoring force by providing a pressing force applied by the user, narrowing the gap and then restoring the original gap.

Due to the elastic restoring force of the first elastic member 1161 and the second elastic member 1163, the internal space of the device body 1110 increases from the contracted position to the expanded position, and negative pressure can be formed on the lower side of the pad portion 1500. .

In addition, the internal space of the device body 1110 filled with the elastic portion 1160 also serves as a space through which exudate flows into the pores of the elastic members 1161 and 1163. The exudate that flows into and fills the pores in this way can be discharged into the discharge tank 1600 through the discharge piping unit 1320 by contraction.

The piping part 1300 is a flow path through which the exudate discharged from the pad part 1500 is guided to the discharge tank 1600 where it is collected to the outside through the negative pressure forming device 1100, and the suction piping part 1310 and the discharge piping part ( 1320).

The exudate sucked by negative pressure from the pad unit 1500 into the internal space of the negative pressure forming device 1100 flows into the interior of the device main body 1110 through the suction pipe section 1310.

The suction piping unit 1310 operates the suction manual valve 1313 or the suction piping line 1331, which manually opens and closes the suction piping line 1331, which is the conduit of the suction piping unit 1310, only in the direction in which the exudate is suctioned. Includes suction check valve (1315).

The discharge piping unit 1320 discharges the exudate flowing into the device body 1110 through the discharge piping line 1321 connected to the lower outlet 1105 of the device body 1110 when the user presses the device body 1110. It is desirable to include a discharge manual valve 1323 that manually opens and closes the pipe line 1321 and a discharge check valve 1325 that operates only in the direction in which exudate is discharged from the discharge pipe line 1321.

Here, the suction check valve 1315 or the discharge check valve 1325 may not be coupled to the piping unit 1300 as needed.

The pad portion 1500 covers the wound area and includes a hard material that can seal the wound area, and has a suction pipe line 1331 connected to the central part.

The discharge tank 1600 stores the exudate discharged from the suction pipe 1310.

The operating process of the negative pressure dressing system 1000 according to this embodiment having this configuration will be described in detail with reference to FIGS. 1 to 2B as follows.

First, connect the suction piping part 1310 to the pad part 1500 with the suction port 1103 of the device main body 1110, and connect the discharge piping part 1320 to the outlet 1105 of the device main body 1110 to the discharge tank ( 1600).

Then, the user moves the second casing 1115 toward the first casing 1113 as shown in FIG. 2A while the elastic portion 1160 inside the device body 1110 is expanded as shown in FIG. 1. Pressurize.

In this process, the suction pipe 1310 is closed and the discharge pipe 1320 is open (see Figure 2a).

As shown in FIG. 2A by the user's pressure, when the second casing 1115 descends and reaches the lowest point, the first elastic member 1161 decreases from thickness 't1' (see FIG. 1) to 't1c' (FIG. 2A). Reference), the second elastic member 1163 is compressed from the thickness 't2' (see Figure 1) to 't2c' (see Figure 2a).

When the user closes the discharge piping part 1320, opens the suction piping part 1310, and removes the pressing force, the elastic part 1160 gradually expands due to the elastic restoring force of the elastic part 1160, and the sealing part 1130 It overcomes the friction force and moves to the expansion position as shown in Figure 2b. At this time, the first elastic member 1161 goes from thickness 't1c' (see FIG. 2A) to 't1' (see FIG. 1), and the second elastic member 1163 goes from thickness 't2c' (see FIG. 2A) to 't2'. (see Figure 1).

Here, the movement from the contracted position (see Figure 2a) to the expanded position (see Figure 2b) may be done slowly or at a somewhat faster speed depending on the condition of the wound area below the pad unit 1500.

If a large amount of exudate occurs at the wound area on the lower side of the pad unit 1500, it can be discharged by repeating the process of moving the contracted position and the expanded position.

In normal cases, the second casing 1115 may slowly move as the elastic portion 1160 expands from the contracted position to the expanded position, thereby creating negative pressure at the wound site.

The unexplained reference number 110 refers to the skin and 130 refers to the wound area.

<Second Embodiment>

In the negative pressure forming device 2100 of the negative pressure dressing system 2000 according to another embodiment of the present invention, as shown in FIG. 3, unlike the cylindrical device body 1110 described above, the device body 2110 has a wrinkled shape. It has a cylindrical shape.

In the case of this embodiment, the elastic portion 2160 is the same as previously described, so detailed description is omitted. Also, unlike the previous embodiment, this embodiment does not have a sealing part or a stopper and is not shown, but the piping part, pad part, and discharge tank are the same as the previously described embodiment.

That is, it can be seen that the negative pressure forming device 2100 having this structure has a simpler structure than the negative pressure forming device 1100 described above.

However, although not shown so that the elastic part 2160 can be coupled to the inside of the corrugated device body 2110, the upper or lower plate of the device main body 1110 is detachably coupled to and detachable from the cylindrical corrugated pipe and bolts. It can be sealed with an O-ring or the like to create negative pressure inside the device body 2110.

<Third Embodiment>

As shown in FIG. 4, the negative pressure dressing system 3000 according to another embodiment of the present invention preferably includes a spring 3165 made of plastic in the elastic portion 3163 of the previously described embodiments. Springs made of such plastic materials can supplement the elastic restoring force of elastic members with voids.

In addition, of course, the plastic spring according to this embodiment can be coupled to the inside of the device body (1110, 2110, 3110) not only in this embodiment but also in other embodiments.

This embodiment can provide elastic restoring force more effectively.

<Example 4>

The negative pressure dressing system 4000 according to this embodiment is shown in FIG. 5. In the previously described embodiment, it is preferable to further include a cushion tank 4700 capable of storing exudate flowing out of the pad unit 1500 between the pad unit 1500 and the negative pressure forming device 1100.

Due to the presence of the cushion tank 4700, the elastic portion 1160 is preferably able to maintain its original elastic restoring force. That is, the presence of residual exudate in the pores of the elastic portion 1160 may be a factor that impedes the elastic recovery force of the elastic portion 1160.

<Embodiment 5>

As shown in FIGS. 6A to 6C, the negative pressure dressing system 1000 according to another embodiment of the present invention includes a negative pressure forming device 5100 that forms negative pressure in the cushion tank 5700 of FIG. 5. Includes shape.

The negative pressure forming device 5100 is provided in the shape of a pistol and operates between a pressure chamber 1107 in communication with the cushion tank 5700 and a cylinder 5460 in communication with a piston (5515) operated by a lever 5515 linked to a trigger 5511. 5410) is preferably included.

As shown in FIGS. 6A to 6C, the piston 5410 has a smaller outer diameter than the cylinder 5460, and has an O-ring at the end that seals between the inner peripheral surface of the cylinder 5460 and the piston 5410 ( 5440) is coupled, and three or more protrusions 5420 are formed on the outer diameter in the longitudinal direction to guide the piston 5410 to move inside the cylinder 5460.

In the negative pressure forming device 1100 according to the present embodiment having this configuration, when the user releases the trigger 5511, an elastic spring 5517 including a spring that elastically presses the trigger 5511 is interlocked with the trigger 5511. The O-ring portion to which the O-ring 1137 of the piston 5410 is coupled is positioned in the pressure chamber 1107 by the lever 5515 (see FIG. 6b).

And, when the trigger 5511 is pulled, the O-ring part of the piston 5410 that interlocks with the trigger 5511 seals between the cylinder 5460 and the piston 5410 and moves the air in the pressure chamber 1107 to the outside. This can be done (see Figure 6c). By repeating the process of pulling and releasing the trigger 5511, negative pressure can be created in the cushion tank 5700.

Meanwhile, when discharging the exudate from the cushion tank 5700 to the discharge tank 1600, the suction pipe portion 1310 is closed and the discharge pipe portion 1320 is opened. As shown in Figure 6b, when the trigger 5511 is released, the lever 5515 is operated by the elastic restoring force of the elastic spring 5517, so that the piston 5410 moves backward and the O-ring 5440 is located in the pressure chamber 1107, thereby opening the pressure chamber (5517). 1107) becomes equal to atmospheric pressure.

Next, as shown in FIG. 6C, when the trigger 5511 is pulled, the piston 5410 moves forward, the O-ring 5440 moves forward between the cylinder 5460 and the piston 5410, and when negative pressure is applied to the pressure chamber 1107, the cushion tank Negative pressure is also applied to (5700), causing negative pressure to be applied to the lower side of the pad portion (1500).

If this trigger operation is repeated, the negative pressure applied to the pad portion 1500 gradually increases.

Reference number 5353, which is not described here, is a pressure chamber suction check valve connected to the pipe through which the pressure of the pressure chamber is suctioned, reference number 5355 is a pressure chamber check valve connected to the pipe through which the pressure of the pressure chamber is opened to the outside, and reference number 5510 is the device main body. represents.

Additionally, when discharging the exudate from the cushion tank 5700 to the discharge tank 1600, it can be discharged to the outside through the operation of a manual valve (not shown).

<Example 6>

As shown in FIG. 7, the negative pressure forming device 6100 of the negative pressure dressing system 6000 according to another embodiment of the present invention has a stroke control function that can adjust the stroke in the process of moving between the contracted position and the expanded position. It is equipped with wealth (6173, 6175).

The structure of the stroke adjusting parts 6173 and 6175 of this embodiment is a female screw 6175 and a male screw 6173 structure (two-row screw and three-row screw are also possible), and the stroke increases and then decreases when the outer screw is rotated. .

In the case of adjusting the stroke in this way, it will be very convenient for the user to adjust the stroke if there is a difference in the size of the wound area on the lower side of the pad unit 1500 and the amount of exudate flowing out from the wound area.

The structure of this stroke control unit may be of any other known form.

<Embodiment 7>

A negative pressure dressing system 7000 according to another embodiment of the present invention, as shown in FIGS. 8 to 9E, includes a pad portion 1500 that seals the wound area of the skin; An internal space is formed in the device body 7100, which is provided in a roughly cylindrical shape to communicate with the pad part 1500 to form negative pressure in the wound area on the lower side of the pad part 1500, and to allow the internal space to contract and expand. It is preferable that the device body 7100 includes a negative pressure forming device 7100 made of an elastically deformable synthetic resin material.

That is, the device body 7100 is a negative pressure forming device 7100, but the device body 7100 has a structure in which an inlet 1103 and an outlet 1105 are formed. The structure of the device body 7100 or the negative pressure forming device is very simple without an elastic body including a separate spring that elastically deforms, and the user can use it simply and conveniently.

This device body 7100' may further include a cylindrical shape as shown in FIGS. 10A and 10B, or a rectangular corrugated pipe shape (not shown).

The device body 7100 has a shape that gradually increases in circumference from the upper side to the central side and gradually decreases in circumference toward the lower side where the suction port 1103 in communication with the pad portion 1500 is formed at the central side. For example, a rugby ball. Includes shape.

Here, negative pressure control holding members (7210, 7220, 7210') are made of a synthetic resin material containing elastically deformable silicon and are provided in a shape to surround a portion of the circumference of the device body, as shown in FIGS. 9A to 10B. It is desirable.

In this embodiment, the negative pressure control holding members (7210, 7220, 7210') are thin and have a band-shaped negative pressure control holding member of a set width, but as shown in FIGS. 9E, 10A, and 10B, they have a string shape, It can be provided in various shapes, including a curved or bent string shape, a wavy shape with a thin strip cross-section, or a bent shape.

These negative pressure control holding members (7210, 7220, 7210`) are made of a thin, transparent or translucent material, so they can be attached to the device body (7100, 7100`) without significantly affecting the structure or shape of the device body (7100, 7100`). can be combined

The operating process of the negative pressure dressing system 7000 having this configuration will be described in detail with reference to FIGS. 9B to 9D as follows. However, since the remaining configuration of the negative pressure dressing system 7000 is the same, the case where the device body 7100 and two negative pressure adjustment holding members 7210 and 7220 are provided will be described.

First, as shown in Figure 9b, when the negative pressure control holding members 7210 and 7220 are coupled to a position where the circumferential length of the device body 7100 is small, the device body 7100 is contracted in the process of shrinking. The elastic force of the negative pressure control holding members (7210, 7220) does not act significantly, and the elastic force of the negative pressure control holding members (7210, 7220) does not significantly affect the device body (7100) even during the process of shrinking and expanding the device body (7100). However, in the process of expansion, the device body 7100 expands more slowly than without the negative pressure control and maintenance members (7210, 7220), and the device body (7100) will not expand completely due to the negative pressure maintenance and control members (7210, 7220). .

Next, the user places one of the negative pressure maintenance control members (7210, 7220) on the large circumferential length of the device body 7100 as shown in Figure 9c, and if necessary, two negative pressure maintenance control members as shown in Figure 9d. (7210, 7220) can be located in the area where the circumference of the device body 7100 is the largest, and the two can be overlapped if necessary.

Through these adjustments, the speed at which the device body 7100 expands and the position at which it can expand as much as possible can be adjusted. In addition, if the device body 7100 fails to overcome the elastic force of the negative pressure control holding members 7210 and 7220 and remains contracted, a certain level of negative pressure can always be maintained on the device body 7100 and the pad portion 1500. It has the advantage of being

This process is also applied to Figures 10a and 10b, and the expansion rate and degree of negative pressure maintenance can be adjusted by changing the elasticity, type, number, and width of the negative pressure maintenance control members 7210' used.

In other words, it is very easy to change the position of the degree of expansion and contraction of the device body 7100 simply by using the two negative pressure expansion control members 7210 and 7220, and because the structure is simple, the position described above can be adjusted as needed, allowing the patient to Depending on the progress of the wound area, users including nurses, doctors or patients can use it simply and conveniently.

According to the present invention, it is possible to provide a negative pressure dressing system that can be achieved through the operation of the elastic restoring force and tendon shape of synthetic resin by manually using a negative pressure forming device to generate negative pressure during the wound healing process.

In addition, since it operates manually without the operation of a vacuum pump, it is possible to provide a negative pressure dressing system that does not generate noise, does not require electricity supply or use of batteries, is economical, has a low cost, and has a simple structure.

In addition, it is possible to provide a negative pressure dressing system that is easy to wear and easy to use.

In addition, it is possible to provide a negative pressure dressing system that is simple and inexpensive and can be adjusted so that the formed negative pressure is gradually released.

Additionally, it is possible to provide a negative pressure dressing system that can be adjusted so that the generated negative pressure can be maintained at a set minimum.

Although several embodiments of the present invention have been illustrated and described herein, those skilled in the art will recognize that modifications can be made to the present embodiments without departing from the principles or spirit of the present invention. The scope of the invention will be determined by the appended claims and their equivalents.

1000, 2000, 3000, 4000, 5000, 6000: Negative pressure dressing system
1100: Negative pressure forming device 1110: Device body
1113: 1st casing 1115: 2nd casing
1130: Sealing part 1131: First sealing groove
1133: Ceiling skirt 1135: Second ceiling groove
1137: O-ring 1140: Handle
1150: cap 1160: elastic part
1161: first elastic member 1163: second elastic member
1170: stopper
1300: Piping unit 1310: Suction piping unit
1331: Suction piping line 1313: Suction manual valve
1315: Suction check valve 1320: Discharge piping part
1321: Discharge piping line 1323: Discharge manual valve
1325: Discharge check valve 1500: Pad part
1600: Discharge tank
4700: Cushion tank
5100: Negative pressure forming device
5353: Pressure chamber suction check valve 5355: Pressure chamber check valve
5410: Piston 5420: Protrusion
5440: O-ring 5460: Cylinder
5510: Device body
5511: Trigger 5515: Lever
5517: Elastic spring
7210, 7220: Negative pressure control maintenance member
1103: Inlet 1105: Outlet
1107: Pressure room
110: skin 130: wound area

Claims (19)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete In the negative pressure dressing system,
a pad portion that seals the wound area of the skin;
An internal space is formed in the device body, which is provided in a cylindrical shape so as to communicate with the pad part and form negative pressure at the wound area on the lower side of the pad part, and the device main body is made of an elastically deformable synthetic resin material so that the internal space can be contracted and expanded. A negative pressure forming device;
The outer surface of the device body is made of a synthetic resin material containing elastically deformable silicon to control the negative pressure in the internal space to maintain the negative pressure in the internal space by limiting the expansion of the internal space to the maximum range during the process of expansion and contraction of the internal space. A negative pressure dressing system comprising a negative pressure adjustment holding member detachably coupled to the circumference. delete According to clause 17,
The device body has a structure in which the circumference gradually increases from the upper side to the central side, and then gradually decreases as it moves from the central side to the lower side where the suction port communicating with the pad portion is formed. The device shrinks by pressing the circumference and returns to its original state when the pressing force is removed. This is,
A negative pressure dressing system characterized in that it includes a corrugated pipe structure in which wrinkles are formed in the up and down directions and the internal space is reduced when pressed down, and then returns to its original state when the pressing force is removed.

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