Negative pressure drainage wound dressing
By designing a round table-shaped drainage outflow hole and sealing assembly in the negative pressure drainage wound dressing, the problem of difficulty in connecting multiple diameter catheters in the prior art is solved, and the removable connection of multiple diameter catheters is realized, which improves the applicability of the dressing and practicality.
Patent Information
- Application Number
- CN202421194853.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The existing negative pressure drainage wound dressing is difficult to connect to drainage conduits of multiple diameters, resulting in the diameter of the drainage conduit. If it is damaged, the corresponding conduit can only be replaced, which has limitations.
A negative pressure drainage wound dressing is designed, which includes a tower film, a perforated silicon gel layer, a sandwich cloth, a polyurethane sponge and a polyurethane water-blocking and breathable membrane, forming a circular table-shaped drainage outhole, and in the drainage conduit and the drainage conduit A first sealing assembly is arranged between the outlet holes, and the detached connection of the conduits of various diameters is achieved through the fixing assembly.
The sealing connection between the drainage conduits of various diameters and the drainage outholes is achieved, which improves practicality, allows the replacement of the conduits of different diameters, and enhances the applicability of the dressing.
Smart Images
Figure CN222195269U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dressings, in particular to a negative pressure drainage wound dressing. Background Art
[0002] Dressings are medical materials used to cover sores, wounds or other damages. With the in-depth study of the pathophysiology of wound healing, people have a deeper understanding of the wound healing process, which has promoted the continuous improvement and development of medical wound dressings. When the human body is traumatized or the body tissue is liquefied, a large amount of exudate will be produced, which will erode healthy tissues and affect the healing of wounds. For this medical situation, it is necessary to drain the exudate to promote wound healing, stimulate the growth of blood vessels, etc., so that the patient can recover. Negative pressure drainage of exudate requires negative pressure drainage dressings, and negative pressure wound treatment technology is used. Negative pressure wound treatment technology is a new technology for treating wounds developed in recent years. It uses a biological semipermeable membrane to close the open wound, uses a special negative pressure machine to generate a certain negative pressure, and acts on the wound after debridement through drainage tubes and dressings. Current research has shown that this therapy can accelerate blood circulation in the wound area, significantly promote the entry of new blood vessels into the wound, stimulate the growth of granulation tissue, fully drain, reduce edema, reduce pollution, inhibit bacterial growth, and can directly accelerate wound healing or create conditions for surgical repair.
[0003] However, it is difficult to connect drainage catheters of various diameters with existing dressings, which results in the selected drainage catheter having a relatively fixed diameter. Furthermore, when the drainage catheter is damaged, only the corresponding drainage tube can be selected, which is a limitation. Therefore, a negative pressure drainage wound dressing is invented. Utility Model Content
[0004] In view of the above problems and / or the problems existing in the existing negative pressure drainage wound dressing, the present utility model is proposed.
[0005] Therefore, the purpose of the present invention is to provide a negative pressure drainage wound dressing that can solve the above-mentioned existing problems.
[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:
[0007] A negative pressure drainage wound dressing comprises a dressing body and a drainage catheter, wherein the dressing body is composed of a tower-shaped membrane, a perforated silicone gel layer, a sandwich cloth, a polyurethane sponge and a polyurethane water-blocking and breathable membrane, the polyurethane sponge is provided with a first through hole, the polyurethane water-blocking and breathable membrane is provided with a second through hole, the first through hole and the second through hole are connected, and the first through hole and the second through hole form a truncated cone-shaped drainage outlet hole, the diameter of which gradually decreases from top to bottom, one end of the drainage catheter is inserted into the drainage outlet hole, and a first sealing component is provided between the drainage catheter and the drainage outlet hole.
[0008] As a preferred embodiment of the negative pressure drainage wound dressing described in the utility model, the lower surface of the polyurethane water-blocking and breathable membrane is provided with a polyurethane sponge, the lower surface of the polyurethane sponge is provided with a sandwich cloth, the lower surface of the sandwich cloth is provided with a perforated silicone gel layer, and the lower surface of the perforated silicone gel layer is provided with a tower-shaped membrane.
[0009] As a preferred solution of the negative pressure drainage wound dressing described in the utility model, the first sealing component includes:
[0010] A first annular groove, wherein one end of the drainage catheter is provided with a first annular groove;
[0011] The first sealing ring is fixedly installed in the first annular groove, and the first sealing ring is in close contact with the inner surface of the drainage hole.
[0012] As a preferred embodiment of the negative pressure drainage wound dressing described in the utility model, one end of the drainage catheter is detachably connected to the polyurethane water-blocking and breathable membrane through a fixing component;
[0013] The fixing component comprises a patch, which is fixedly mounted on one end of the drainage catheter and is detachably connected to the polyurethane water-blocking and breathable membrane via a connecting component.
[0014] As a preferred solution of the negative pressure drainage wound dressing described in the utility model, the connection component includes:
[0015] Slide grooves, a plurality of slide grooves are provided at the bottom end of the patch;
[0016] Positioning holes: a plurality of positioning holes are provided on the patch located above the slide slot, and the positioning holes are connected to the slide slot.
[0017] As a preferred solution of the negative pressure drainage wound dressing described in the utility model, the connection component further includes:
[0018] Sliding rods, a plurality of sliding rods are fixedly installed on the top of the polyurethane water-blocking and breathable membrane;
[0019] A positioning block is fixedly mounted on one end of the sliding rod.
[0020] As a preferred solution of the negative pressure drainage wound dressing described in the utility model, wherein: the slide rod is inserted into the slide groove, and the positioning block can be inserted into the positioning hole through the slide groove.
[0021] As a preferred solution of the negative pressure drainage wound dressing described in the utility model, the shape of the positioning block is set to be a hemisphere, the material of the positioning block is set to be rubber, and the interior of the positioning block is set to be hollow.
[0022] Compared with existing technologies:
[0023] By providing a truncated cone-shaped drainage hole on the dressing body and providing a first sealing component between the drainage catheter and the drainage hole, drainage catheters of various diameters can be sealed and connected to the drainage hole. In addition, one end of the drainage catheter can be detachably connected to the polyurethane water-blocking and breathable membrane by providing a fixing component, so that drainage catheters of various diameters can be fixed, thereby improving practicality to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;
[0025] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;
[0026] Figure 3 This is a schematic diagram of the patch structure of the utility model;
[0027] Figure 4 This is a schematic diagram of the structure of the slide bar and the positioning block of the utility model.
[0028] In the figure: a tower-shaped membrane 10, a perforated silicone gel layer 11, a sandwich cloth 12, a polyurethane sponge 13, a polyurethane water-blocking and breathable membrane 14, a first through hole 15, a second through hole 16, a drainage catheter 20, a first annular groove 30, a first sealing ring 31, a patch 40, a slide groove 60, a positioning hole 61, a slide rod 62, and a positioning block 63. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.
[0030] The utility model provides a negative pressure drainage wound dressing, please refer to Figure 1-Figure 4The dressing body comprises a dressing body and a drainage catheter 20. The dressing body is composed of a tower-shaped membrane 10, a perforated silicone gel layer 11, a sandwich cloth 12, a polyurethane sponge 13 and a polyurethane water-blocking and breathable membrane 14. The lower surface of the polyurethane water-blocking and breathable membrane 14 is provided with a polyurethane sponge 13, the lower surface of the polyurethane sponge 13 is provided with a sandwich cloth 12, the lower surface of the sandwich cloth 12 is provided with a perforated silicone gel layer 11, and the lower surface of the perforated silicone gel layer 11 is provided with a tower-shaped membrane 10. The tower-shaped membrane 10, the perforated silicone gel layer 11, the sandwich cloth 12, the polyurethane sponge 13 and the polyurethane water-blocking and breathable membrane 14 are all patents CN11402807. 7B includes a tower-shaped membrane, a perforated silicone gel layer, a sandwich cloth, a polyurethane sponge and a polyurethane water-blocking and breathable membrane, a first through hole 15 is provided on the polyurethane sponge 13, and a second through hole 16 is provided on the polyurethane water-blocking and breathable membrane 14, the first through hole 15 and the second through hole 16 are connected, and the first through hole 15 and the second through hole 16 form a truncated cone-shaped drainage outlet hole, the diameter of which gradually decreases from top to bottom, one end of the drainage catheter 20 is inserted into the drainage outlet hole, and a first sealing assembly is provided between the drainage catheter 20 and the drainage outlet hole, wherein the drainage catheter 20 is connected to an external negative pressure source, and the negative pressure source includes but is not limited to a negative pressure aspirator.
[0031] The first sealing assembly includes: a first annular groove 30 and a first sealing ring 31;
[0032] A first annular groove 30 is formed at one end of the drainage catheter 20 . A first sealing ring 31 is fixedly installed in the first annular groove 30 , and the first sealing ring 31 is in close contact with the inner surface of the drainage outlet hole.
[0033] One end of the drainage catheter 20 is detachably connected to the polyurethane water-blocking breathable membrane 14 via a fixing component, the fixing component includes a patch 40, the patch 40 is fixedly mounted on one end of the drainage catheter 20, and the patch 40 is detachably connected to the polyurethane water-blocking breathable membrane 14 via a connecting component.
[0034] The connecting assembly includes: a slide groove 60, a positioning hole 61, a slide rod 62, and a positioning block 63;
[0035] A plurality of slide grooves 60 are provided at the bottom end of the patch 40, and a plurality of positioning holes 61 are provided on the patch 40 located above the slide grooves 60, and the positioning holes 61 are communicated with the slide grooves 60, and a plurality of slide rods 62 are fixedly installed on the top of the polyurethane water-blocking and breathable membrane 14, and a positioning block 63 is fixedly installed on one end of the slide rod 62, and the slide rod 62 is inserted in the slide groove 60, and the positioning block 63 can be inserted in the positioning hole 61 through the slide groove 60, and the shape of the positioning block 63 is set to be a hemisphere, and the material of the positioning block 63 is set to be rubber, and the interior of the positioning block 63 is set to be hollow, wherein the shape of the positioning hole 61 matches the shape of the positioning block 63.
[0036] Working principle: first align the positioning block 63 and the slide groove 60, then insert one end of the drainage catheter 20 into the drainage outlet hole, until the positioning block 63 passes through the slide groove 60 and is inserted into the positioning hole 61. At this time, the patch 40 will be in close contact with the polyurethane water-blocking and breathable membrane 14, and the first sealing ring 31 will be in close contact with the inner surface of the drainage outlet hole after deformation. At this time, the drainage catheter 2 can be installed, and then the dressing body can be covered on the wound area, and the wound area is smaller than the dressing body area. After that, the periphery of the dressing body is closed with an external medical film. It is appropriate that the medical film overlaps with the dressing body by 1 cm. Then, the negative pressure source is started to make the inside of the dressing body in a negative pressure state, and then the wound exudate will be drained out through the dressing body and the drainage catheter 20.
[0037] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A negative pressure drainage wound dressing, comprising a dressing body and a drainage catheter (20), wherein the dressing body is composed of a tower-shaped membrane (10), a perforated silicone gel layer (11), a sandwich cloth (12), a polyurethane sponge (13) and a polyurethane water-blocking and breathable membrane (14), characterized in that: The polyurethane sponge (13) is provided with a first through hole (15), and the polyurethane water-blocking and breathable membrane (14) is provided with a second through hole (16). The first through hole (15) and the second through hole (16) are connected, and the first through hole (15) and the second through hole (16) form a truncated cone-shaped drainage hole, the diameter of which gradually decreases from top to bottom, one end of the drainage catheter (20) is inserted into the drainage hole, and a first sealing component is provided between the drainage catheter (20) and the drainage hole.
2. A negative pressure drainage wound dressing according to claim 1, characterized in that: The lower surface of the polyurethane water-blocking and breathable membrane (14) is provided with a polyurethane sponge (13), the lower surface of the polyurethane sponge (13) is provided with a sandwich cloth (12), the lower surface of the sandwich cloth (12) is provided with a perforated silicone gel layer (11), and the lower surface of the perforated silicone gel layer (11) is provided with a tower-shaped membrane (10).
3. The negative pressure drainage wound dressing according to claim 1, characterized in that: The first sealing assembly comprises: A first annular groove (30), one end of the drainage catheter (20) is provided with a first annular groove (30); A first sealing ring (31), wherein the first sealing ring (31) is fixedly mounted in the first annular groove (30), and the first sealing ring (31) is in close contact with the inner surface of the drainage outlet hole.
4. The negative pressure drainage wound dressing according to claim 1, characterized in that: One end of the drainage catheter (20) is detachably connected to the polyurethane water-blocking and breathable membrane (14) via a fixing assembly; The fixing component comprises a patch (40), the patch (40) is fixedly mounted on one end of the drainage catheter (20), and the patch (40) is detachably connected to the polyurethane water-blocking and breathable membrane (14) via a connecting component.
5. A negative pressure drainage wound dressing according to claim 4, characterized in that: The connection component comprises: Slide grooves (60), a plurality of slide grooves (60) are provided at the bottom end of the patch (40); Positioning holes (61), a plurality of positioning holes (61) are provided on the patch (40) located above the slide groove (60), and the positioning holes (61) and the slide groove (60) are connected.
6. The negative pressure drainage wound dressing according to claim 5, characterized in that: The connection component also includes: Sliding rods (62), a plurality of sliding rods (62) are fixedly mounted on the top of the polyurethane water-blocking and breathable membrane (14); A positioning block (63), wherein the positioning block (63) is fixedly mounted on one end of the slide rod (62).
7. A negative pressure drainage wound dressing according to claim 6, characterized in that: The slide rod (62) is inserted into the slide groove (60), and the positioning block (63) can be inserted into the positioning hole (61) through the slide groove (60).
8. The negative pressure drainage wound dressing according to claim 7, characterized in that: The shape of the positioning block (63) is set to be a hemisphere, the material of the positioning block (63) is set to be rubber, and the interior of the positioning block (63) is set to be hollow.