CN101744688A - wound care device - Google Patents

Abstract

A wound nursing device comprises a first body, a second body and at least one component with a pore, wherein the first body is provided with a sticky film, the first body is provided with at least one first hole, and the second body is made of a flexible and waterproof material; the second body is provided with at least one second hole and at least one third hole, the second hole and the third hole are communicated with each other and form an accommodating space inside the second body, the second body is connected with the first body, and the second hole is correspondingly arranged at the position of the first hole; the component with the pore is arranged in the accommodating space of the second body.

Description

wound care device

technical field

The present invention relates to a wound care device, in particular to a wound care device that can form a sealed environment around the wound to facilitate negative pressure wound therapy, and at the same time prevent the catheter above the wound from causing structural obstacles or squeezing the wound to cause discomfort to the patient, and A wound care device suitable for negative pressure therapy that prevents catheters from being clogged due to bending.

Background technique

Vacuum Assisted Closure (V.A.C. Therapy), or Negative Pressure Wound Therapy (NPWT for short), is a kind of auxiliary physical therapy. Its principle is to use a negative pressure pump combined with a sealing patch and The biocompatible porous material used as a dressing creates a negative pressure environment in the wound, and the external negative pressure reduces the volume of the porous material, which indirectly causes the wound to tighten inward, and the boundary cells are pulled by the molecular shear stress of the material, promoting cell division and proliferation, and accelerating In wound healing, the negative pressure is transmitted through the porous material in the wound. In addition to attracting the flow of intercellular tissue fluid, indirectly promoting angiogenesis and local blood circulation, it can also draw out bacterial pus and excessive tissue fluid in the wound to avoid edema. Reduce the chance of inflammation, provide a moist healing environment, protect the wound and reduce the time required for wound healing.

The basic structure of vacuum wound healing therapy is to put a dressing in the wound, seal the wound with a sealing film, and then connect a catheter connected to a negative pressure source, and the negative pressure source will pump out the exudate in the wound to a waste liquid In the storage tank; the catheter in this existing structure is directly inserted into the wound, so a three-dimensional structure is formed above the wound, making the wound difficult to seal. This existing structure not only causes extreme discomfort to the patient's wound, but also easily causes the sealant film to be damaged due to extrusion, or the catheter is bent and blocked, thus resulting in ineffective treatment.

For patents, for example, U.S. Patent No. 6,626,891 "Drainage system to beused with an open wound, an element which is used thereby for placing a drainage tube or hose, and a method of using said drainage system", which is on a board A protruding part is provided on one side of the protruding part, and a space is formed inside the protruding part, and one end of the space passes through the protruding part to form an opening, which can be used for an external conduit to connect to a negative pressure source, and the plate-shaped component is provided with a plurality of holes Connect the space inside the protruding part, form a space inside the protruding part to cover the dressing on the wound, and then cover the periphery of the plate-shaped component with an adhesive film and stick it on the patient's skin, the exudate from the wound can be drained through the catheter The liquid passes through the dressing, the hole of the plate-shaped component, the inner space of the protruding part, and finally is drawn out through the conduit; however, the plate-shaped component has a certain hardness and thickness, and the protruding part and the conduit are located in the center of the wound, which will make the The patient feels uncomfortable, and the catheter is easily loosened due to inadvertent pulling by external force, or blocked due to bending. In addition, its adhesive film is also easy to separate from the plate-shaped component due to long-term compression, affecting air tightness.

Another example is U.S. Patent No. 7273054 "Surgical drape and head for wound treatment", which is provided with a plurality of columnar structures on one side of a flat body, and a joint is provided on the other side of the flat body to run through the flat body, and the joint can Connect the external catheter to the negative pressure source, cover the side with the columnar structure on the dressing of the wound, and then cover the periphery of the flat body with an adhesive film and stick it on the patient's skin, the exudate from the wound can be drained through the catheter Pass through the gap between the dressing, the columnar structure, the joint, and finally be extracted through the catheter; similarly, similar to the shortcomings of the previous existing case (US Patent No. 6,626,891), the columnar structure set on the flat body and the bottom The structure has a certain hardness and thickness, and the joint and the catheter are located in the center of the wound, which will cause discomfort to the patient, and the catheter is easy to loosen due to inadvertent pulling by external force, or cause obstruction due to bending. In addition, its The film is also easy to separate from the flat body due to long-term pressure, which affects the airtightness.

Another example is U.S. Patent No. 7128735 "Reduced pressure wound treatment appliance", which uses a funnel-shaped cover to cover the wound, and a conduit is provided inside the cover to extend to the outside of the cover and connect to a negative pressure source. The catheter draws out the wound exudate; although this case can improve the airtightness, the bulky cover will cause great inconvenience and discomfort to the patient, and the catheter is easy to be bent to cause blockage.

Based on the structure of the above patents, it can be seen that the existing patents have not completely solved the problems of air tightness, discomfort and blockage.

Contents of the invention

In view of the deficiencies in the prior art, the present invention proposes a wound care device that can form a sealed environment around the wound to facilitate negative pressure wound therapy, and at the same time prevent the catheter from being positioned above the wound to cause structural obstacles or squeeze the wound to cause the patient's pain. Discomfort, and prevent the catheter from being blocked due to bending.

To achieve the above object, the present invention proposes a wound care device, which includes a first body, a second body and at least one component with pores, the first body has an adhesive film, and the first body is provided with at least one A first hole; the second body is made of flexible and waterproof material, the second body is provided with at least one second hole and at least one third hole, the second hole and the third hole communicate with each other And an accommodating space is formed inside the second body, the second body is connected to the first body, and the second hole is correspondingly arranged at the position of the first hole; the component with the hole is arranged on the second body within the accommodation space.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the exploded structural diagram of the embodiment of the present invention;

Fig. 2 is the combined structural diagram of the embodiment of the present invention;

Fig. 3 is a schematic diagram of the A-A section structure of Fig. 2 being arranged on the wound;

Fig. 4 is a schematic diagram of another embodiment of the present invention with a cross-sectional structure arranged on a wound;

5 and 6 are schematic cross-sectional structural diagrams of other different embodiments of the present invention.

Among them, reference signs

10, 10A, 10B, 10C - wound care devices

11, 11A, 11B, 11C-first body

111 - first hole

112, 112A, 112B, 112C - top surface

113, 113A, 113B, 113C - Bottom

12, 12A, 12B, 12C-second body

121, 121A, 121B, 121C - second hole

122, 122B, 122C - the third hole

123-Hollow tubular structure

13, 13A, 13B, 13C - components with porosity

20-connector

21- Catheter

30-Patient

31 - wound

32 - skin

40 - Dressing

Detailed ways

The technical means and effects used by the present invention to achieve the purpose will be described below with reference to the accompanying drawings, and the embodiments listed in the following drawings are only for auxiliary illustration, but the technical means of this case are not limited to the listed drawings.

The wound care device proposed by the present invention can form a sealed environment around the wound to facilitate negative pressure wound therapy. The negative pressure source and the liquid collection device can supply the wound with negative pressure and store the wound waste liquid. Therefore, the wound care device of the present invention also has the function of transmission, so that the waste liquid at the wound end can pass through the wound care device and reach the back end. in the liquid collection device.

Please refer to the wound care device 10 proposed by the present invention shown in Fig. 1 and Fig. 2, which includes a first body 11, a second body 12 and a component 13 with pores, the first body 11 has an adhesive film For example, a transparent film patch called "O.P Site" in the general medical field, or a polyurethane (PU, Polyurethane) film can be used, and at least one first hole 111 is provided in the first body 11; the second body 12 It is made of flexible and waterproof material, and its material is biocompatible, which can be the same as or different from the first body 11, for example, polyvinyl chloride (PVC, Polyvinylchloride) film can be used, and the second body 12 At least one second hole 121 and at least one third hole 122 are provided. The second hole 121 and the third hole 122 communicate with each other and form an accommodating space inside the second body 12. The component 13 with a hole is arranged in In the accommodating space, the component 13 with pores can adopt foaming materials such as polyurethane (PU, Polyurethane), polyvinyl alcohol (PVA, Polyvinyl Alcohol), or materials with reversible water absorption such as gauze and cotton thread, and The common feature of this type of material is that it is soft and flexible, and its pore size is in the range of 200-1500 μm. If the pore size is too small, it will affect the efficiency of the negative pressure source to transmit negative pressure to the wound, and the wound exudate will The impurities in the body are also easy to block in the pores, so it is generally recommended that the pore size is preferably 400-800 μm; as shown in Figure 2, the second body 12 is connected to one side of the first body 11 (ie, the top surface 112) , and the second hole 121 is correspondingly arranged at the position of the first hole 111, and an adhesive layer is provided on the other side of the first body 11 (ie, the bottom surface 113); that is, the second hole 121 is closely attached to The location of the first hole 111 allows the wound care device 10 to provide a sealed environment when in use.

It should be noted that, in this embodiment, the second body 12 is in the shape of a long bag, one end of which is provided with the second hole 121, and the other end is provided with the third hole 122, and the second body 12 is in the shape of a long bag. The third hole 122 extends outside to form a hollow tubular structure 123, the purpose of which is to socket a joint 20 in the hollow tubular structure 123 for connecting a conduit 21 (as shown in FIG. 3 ) in series to connect to negative pressure. In other words, the basic arrangement of the second body 12 is to have a second hole 121 and a third hole 122 connected to each other, and the number is not limited. The second hole 121 serves as an input port, and the first hole 121 Three holes 122 are used as output ports, and its implementation is not limited to the structure of the example shown in the figure. Similarly, the shape of the first hole 111 is not limited to a circular hole as shown in the figure, and multiple rectangles, arbitrary sizes and shapes can be set. The purpose of the combination is to provide wound exudate to pass through and flow into the second body 12 .

Please refer to FIG. 3, a dressing 40 is laid in the wound 31 of a patient 30, the first body 11 covers the wound 31 and is attached to the surface of the skin 32 around the wound 31 to form a sealed environment; And the first hole 111 and the second hole 121 are located above the wound 31, after the exudate, blood or other infectious substances of the wound 31 are absorbed by the dressing 40, the exudate, Blood or other infectious substances are extracted, enter the second body 12 through the first hole 111 and the second hole 121, pass through the component 13 with holes, and then be drawn out to the rear through the third hole 122, the joint 20 and the catheter 21. It should be noted that the component 13 with pores can form a filtering effect on the exudate, blood or other infectious substances, and prevent the inflow of sundries such as hard lumps contained in the exudate, blood or other infectious substances. Connect the conduit 21 of the negative pressure source to cause the obstruction of the conduit 21; because the second body 12 is made of a flexible and waterproof material, the component 13 with pores also has a certain degree of softness and flexibility, so , when the second body 12 is squeezed, it can be attached to the surface of the skin 32 together with the component 13 with holes, so as not to press the wound 31. In addition, when the second body 12 is bent and twisted, due to the second The component with pores 13 is arranged inside the two bodies 12, so the negative pressure can still provide negative pressure to the wound through the pores of the component with pores 13; at the same time, exudate, blood or other infectious substances can also pass through the components of the pores 13 and continuously drawn out, the negative pressure therapy will not stop due to the bending and twisting of the second body 12 . In addition, since the joint 20 and the conduit 21 are connected to the third hole 122 at the outer end of the second body 12, they can be kept away from the wound 31, preventing the hard joint 20 and the conduit 21 from compressing the wound 31, especially when the wound 31 is located on the sole of the patient's foot. or back to avoid discomfort to the patient.

Please refer to the embodiment shown in Figure 4, the wound care device 10A includes a first body 11A, a second body 12A and a component 13A with a hole, the feature of this embodiment is that the component 13A with a hole is formed by the first The second hole 121A extends a certain length from the outside of the first body 11A (i.e., the bottom 113A); when the wound care device 10A is placed on the wound 31, the component 13A with pores can directly contact the dressing 40 to allow exudate , blood or other infectious material can be drawn more directly and quickly.

Please refer to the embodiment shown in FIG. 5 , the wound care device 10B includes a first body 11B, a second body 12B and a component 13B with pores, wherein the first body 11B is an adhesive film, with At least one first hole (not shown); the second body 12B is made of a flexible and waterproof material, and is provided with at least one second hole 121B and at least one third hole 122B, the second hole 121B and the third hole 122B communicate with each other and form an accommodating space inside the second body 12B; the component 13B with a hole is disposed in the accommodating space of the second body 12B. The feature of this embodiment is that the second body 12B runs through the first body 11B, so that the second hole 121B and the third hole 122B of the second body 12B protrude from the bottom surface 113B and the top surface 112B of the first body 11B respectively. In addition, an adhesive layer is disposed on the bottom surface 113B of the first body 11B.

The embodiment shown in FIG. 6 is based on the embodiment in FIG. 5 , the wound care device 10C includes a first body 11C, a second body 12C and a component 13C with holes, and the second body 12C runs through the first body 11C, so that the second hole 121C and the third hole 122C of the second body 12C extend out of the bottom surface 113C and the top surface 112C of the first body 11C respectively, and an adhesive layer is provided on the bottom surface 113C of the first body 11, The feature of this embodiment is that the component 13C with a hole extends out of the second body 12C by a certain length from the second hole 121C.

From the above-mentioned various embodiments, it can be seen that the wound care device provided by the present invention can form a sealed environment around the wound with the viscous first body to facilitate negative pressure wound treatment. At the same time, the flexible first body can The two-body design can keep the connection position of the negative pressure source catheter away from the wound, avoiding structural obstacles caused by the catheter above the wound or squeezing the wound to cause discomfort to the patient, and avoiding the catheter being blocked due to bending. In addition, The component with pores can form a filtering effect on the exudate, and prevent impurities such as hard blocks contained in the exudate from flowing into the conduit connected to the negative pressure source and causing the conduit to be blocked.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (15)

1. a Wound care device is characterized in that, comprises:

One first body, it is the thin film with stickiness, this first body is provided with at least one first hole;

One second body, it is made by the material with pliability and water proofing property, this second body is provided with at least one second hole and at least one the 3rd hole, this second hole and the 3rd hole are interconnected and form an accommodation space in this second body interior, this second body is connected in this first body, and this second hole correspondence is arranged at the position of this first hole;

At least one assembly with hole, it is arranged in the accommodation space of this second body.

2. Wound care device according to claim 1 is characterized in that, this first body is different with the material of this second body.

3. Wound care device according to claim 1 is characterized in that, the material of this second body is PVC.

4. Wound care device according to claim 1 is characterized in that, this assembly with hole is PU or PVA.

5. Wound care device according to claim 1 is characterized in that, this assembly with hole is gauze or cotton thread.

6. Wound care device according to claim 1 is characterized in that this pore-size with assembly of hole is positioned at the scope of 200～1500 μ m.

7. Wound care device according to claim 1 is characterized in that this pore-size with assembly of hole is positioned at the scope of 400～800 μ m.

8. Wound care device according to claim 1 is characterized in that, the 3rd hole of this second body is provided with a joint.

9. Wound care device according to claim 1 is characterized in that, this second body is rectangular bag shape, and the one end is provided with this second hole, and the other end is provided with the 3rd hole.

10. Wound care device according to claim 1 is characterized in that, this assembly with hole is extended the outside certain-length of this first body by this second hole.

11. Wound care device according to claim 1 is characterized in that, this second body is connected in the wherein one side of this first body, is provided with mucigel in the another side of this first body.

12. a Wound care device is characterized in that, comprises:

One first body, it is the thin film with stickiness, this first body is provided with at least one first hole;

One second body, it is made by the material with pliability and water proofing property, this second body is provided with at least one second hole and at least one the 3rd hole, this second hole and the 3rd hole are interconnected and form an accommodation space in this second body interior, this second body runs through this first body, makes second hole of this second body and the two sides that the 3rd hole stretches out this first body respectively;

At least one assembly with hole, it is arranged in the accommodation space of this second body.

13. Wound care device according to claim 12 is characterized in that, is provided with mucigel in the wherein one side of this first body.

14. Wound care device according to claim 13 is characterized in that, this mucigel is arranged at this first body and provides on this face that second hole stretches out.

15. Wound care device according to claim 12 is characterized in that, this assembly with hole extends this second external certain-length by this second hole.

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