Functional dressing for oxygen supply or negative pressure flushing

Abstract

The invention provides a functional dressing for oxygen supply or negative pressure flushing, which comprises a dressing body and a feeding and flushing assembly connected to the top of the dressing body, and the dressing body comprises a contact layer, a foam dressing layer and a backing layer which are sequentially overlapped and jointed to a wound; the feeding and flushing assembly comprises a feeding pipe extending into the middle of the foam dressing layer and a negative pressure drainage pipe. According to the implementation mode, in the oxygen supply or liquid supply process, external oxygen or cleaning liquid is injected into the foam dressing layer through the inlet end of the feeding pipe, so that the oxygen content at the wound is increased or the wound is cleaned; in the process of leading out the seepage and the cleaning fluid, under the action of negative pressure, the seepage and the cleaning fluid are discharged through the negative pressure drainage tube, and a dry healing environment is constructed for a wound.

Description

Technical Field

[0001] The present invention relates to the technical field of medical dressings, in particular to a functional dressing for oxygen supply or negative pressure flushing. Background Art

[0002] Related medical dressings are usually used to protect wounds and absorb wound exudate, which can prevent the invasion of external bacteria and increase the speed of wound healing.

[0003] However, in actual use, there is a lack of oxygen supply, which affects wound healing. In addition, the continuous seepage of exudate makes the wound moist, which is easy for bacteria to grow, resulting in poor wound healing effect and even further deterioration of the wound. Summary of the Invention

[0004] The content of this disclosure is intended to briefly introduce concepts that will be described in detail in the detailed description below. The content of this disclosure is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] The present invention provides a functional dressing for oxygen supply or negative pressure flushing to solve the technical problems mentioned in the above background technology section.

[0006] The functional dressing for oxygen supply or negative pressure flushing of the present invention comprises a dressing body and a supply and flushing assembly connected to the top of the dressing body, wherein: The dressing body comprises a contact layer for bonding to the wound, a foam dressing layer, and a backing layer which are stacked in sequence; The feed and flushing assembly includes a feed pipe and a negative pressure drainage pipe extending into the middle of the foam dressing layer; During the oxygen or liquid supply process, external oxygen or cleaning liquid is injected into the foam dressing layer through the inlet end of the supply tube to increase the oxygen content in the wound or clean the wound; During the process of draining out the exudate and the cleaning fluid, the exudate and the cleaning fluid are discharged through the negative pressure drainage tube under the action of negative pressure.

[0007] Optionally, two through holes are opened in the middle of the backing layer, and the feeding pipe and the negative pressure drainage pipe pass through the two through holes in a one-to-one correspondence.

[0008] Optionally, a ring tube is provided in the foam dressing layer, and a plurality of liquid inlet holes are opened on the ring tube.

[0009] Optionally, the annular tube is connected to the negative pressure drainage tube through a connecting tube.

[0010] Optionally, the feeding pipe and the negative pressure drainage pipe both include a detachably connected vertical section and a connecting section, the vertical section passing through a corresponding through hole; the connecting pipe is detachably connected to the connecting section of the negative pressure drainage pipe.

[0011] Optionally, the vertical section of the feed pipe is provided with a first one-way valve; the vertical section of the negative pressure drainage pipe is provided with a second one-way valve; and the connecting pipe is provided with a third one-way valve.

[0012] Optionally, during the oxygen or liquid supply process, the first one-way valve opens under the push of oxygen or cleaning liquid, allowing the oxygen or cleaning liquid to act on the wound; at the same time, the second one-way valve and the third one-way valve are closed, blocking the negative pressure drainage tube and the connecting tube to prevent the discharge of oxygen or cleaning liquid.

[0013] Optionally, in the process of drawing out the exudate and cleaning fluid, the second one-way valve and the third one-way valve are opened, so that the cleaning fluid and the exudate enter the annular tube through the multiple liquid inlet holes, then enter the negative pressure drainage tube through the connecting tube, and finally are discharged to the outside through the negative pressure drainage tube.

[0014] Optionally, a release film is adhered to the bottom of the contact layer.

[0015] Optionally, a waterproof membrane fixed to the bottom of the backing layer is provided on the outer sides of the foam dressing layer.

[0016] The above embodiments of the present invention have the following beneficial effects: Since the supply tube extends into the middle of the foam dressing layer, during the oxygen or liquid supply process, oxygen or cleaning liquid can diffuse from the middle of the foam dressing layer to the surrounding areas, providing oxygen or cleaning liquid to the wound, thereby increasing the oxygen content in the wound to promote healing, or cleaning the wound to prevent bacterial growth.

[0017] Furthermore, since the negative pressure drainage tube extends into the foam dressing layer, under the action of negative pressure, the cleaning liquid and exudate absorbed by the foam dressing layer can be discharged through the negative pressure drainage tube, thereby creating a dry healing environment for the wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1This is a schematic structural diagram of an embodiment of a functional dressing for oxygen supply or negative pressure flushing according to the present invention; Figure 2 This is an exploded schematic structural diagram of an embodiment of a functional dressing for oxygen supply or negative pressure flushing according to the present invention; Figure 3 is a cross-sectional view of an embodiment of a functional dressing for oxygen supply or negative pressure flushing according to the present invention; Figure 4 It is a structural schematic diagram of an embodiment of the feed flushing component of the present invention.

[0020] Description of reference numerals: 100, dressing body; 110, backing layer; 120, foam dressing layer; 121, waterproof membrane; 130, contact layer; 140, release film; 200, feeding and flushing assembly; 210, feeding pipe; 220, negative pressure drainage pipe; 230, connecting pipe; 240, ring pipe; 250, liquid inlet hole. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred to or element must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0025] See also Figures 1 to 4 The functional dressing for oxygen supply or negative pressure irrigation of the present invention includes a dressing body 100 and an oxygen supply and irrigation assembly 200 connected to the top of the dressing body 100. The dressing body 100 includes a contact layer 130 that is attached to the wound. A foam dressing layer 120 is connected to the top of the contact layer 130. A backing layer 110 is provided on the top of the foam dressing layer 120 for waterproofing, breathability, and bacteria resistance. The backing layer 110 is larger than the contact layer 130 and the foam dressing layer 120.

[0026] In addition, a release film 140 is attached to the bottom of the contact layer 130 to prevent dust and bacteria from entering the contact layer 130 and ensure the sterility of the contact layer 130 when in contact with the wound.

[0027] During use, the release film 140 attached to the bottom of the contact layer 130 is manually removed, allowing the contact layer 130 to contact the wound. Because the backing layer 110 is larger than the contact layer 130 and the foam dressing layer 120, the perimeter of the backing layer 110 adheres to the perimeter of the wound, securing the dressing body 100 to the patient's skin and achieving waterproof, dustproof, and antibacterial properties.

[0028] The feeding and flushing assembly 200 includes a feeding tube 210 and a negative pressure drainage tube 220. The feeding tube 210 is used to introduce oxygen or cleaning fluid into the foam dressing layer 120, and the negative pressure drainage tube 220 is used to drain the cleaning fluid in the foam dressing layer 120 and the wound exudate.

[0029] Specifically, two through holes can be opened in the middle of the above-mentioned backing layer 110, and the feeding tube 210 and the negative pressure drainage tube 220 pass through the two through holes one by one, so that the ends of the feeding tube 210 and the negative pressure drainage tube 220 pass through the backing layer 110 and extend into the foam dressing layer 120.

[0030] A ring tube 240 is embedded in the foam dressing layer 120 and is provided with a plurality of liquid inlet holes 250. The ring tube 240 is connected to the negative pressure drainage tube 220 through a connecting tube 230.

[0031] During the process of delivering oxygen to the dressing body 100, the inlet end of the supply tube 210 is connected to an external oxygen supply device, so that oxygen is delivered to the foam dressing layer 120 through the supply tube 210 and further penetrates the foam dressing layer 120 and the contact layer 130 downward, thereby increasing the oxygen content at the wound and promoting wound healing. It should be noted that the external oxygen supply device can be an oxygen concentrator, etc., and those skilled in the art can select it according to actual circumstances.

[0032] During the process of delivering cleaning liquid to the dressing body 100, the inlet end of the feed tube 210 can be connected to an external liquid supply device, and a cleaning liquid such as physiological saline is injected into the middle of the foam dressing layer 120 through the feed tube 210. Since the foam dressing layer 120 has a porous structure, it can quickly absorb the wound exudate that penetrates into the foam dressing layer 120. After the cleaning liquid is injected into the foam dressing layer 120, the cleaning liquid can flush the exudate generated by the wound adsorbed in the foam dressing layer 120, and can also penetrate into the contact layer 130 to clean the wound, thereby avoiding the growth of bacteria and promoting the healing of the wound. The above-mentioned external liquid supply device can be a device including a peristaltic pump or other type of water pump, which is used to pump physiological saline into the feed tube 210.

[0033] Since the two through holes are arranged in the middle of the backing layer 110, the feeding tube 210 points to the middle of the foam dressing layer 120. During the oxygen or liquid supply process, oxygen or saline can be evenly diffused from the middle of the foam dressing layer 120 to the surrounding areas.

[0034] After delivering the cleaning fluid, the cleaning fluid and exudate need to be drained out. Specifically, the outlet end of the negative pressure drainage tube 220 is connected to an external negative pressure device. The external negative pressure device generates negative pressure, forcing the cleaning fluid and exudate to enter the annular tube 240 through the multiple liquid inlet holes 250, then enter the negative pressure drainage tube 220 through the connecting tube 230, and finally be discharged to the outside through the negative pressure drainage tube 220. This discharges the exudate and saline solution, creating a dry healing environment for the wound. The external negative pressure device can be a medical device including a vacuum pump, which is used to generate negative pressure to draw the exudate and cleaning fluid.

[0035] In addition, since the feed tube 210 and the negative pressure drainage tube 220 are connected to the dressing body 100, it will cause inconvenience to the patient's movement. Therefore, the feed tube 210 and the negative pressure drainage tube 220 can be detachably connected in two parts. The vertical sections of the feed tube 210 and the negative pressure drainage tube 220 that pass downward through the backing layer 110 can be detachably connected to the connection section for connecting to an external oxygen supply device or an external negative pressure device. The vertical section of the feed tube 210 is provided with a first one-way valve, and the vertical section of the negative pressure drainage tube 220 is provided with a second one-way valve.

[0036] When oxygen or cleaning liquid is delivered, after the vertical section of the supply pipe 210 is connected to the connecting section, the oxygen or cleaning liquid can push open the first one-way valve, allowing the oxygen or cleaning liquid to enter the foam dressing layer 120. When the delivery of oxygen or cleaning liquid stops, the first one-way valve closes.

[0037] Furthermore, the connecting tube 230 may also be detachably connected to the connecting section of the negative pressure drainage tube 220 , and a third one-way valve is provided in the connecting tube 230 .

[0038] To drain the cleaning fluid and exudate, first connect the vertical section of the negative pressure drainage tube 220 and the connecting tube 230 to the connecting section of the negative pressure drainage tube 220. Under the action of negative pressure, the second and third one-way valves open, allowing the cleaning fluid and exudate to drain. When draining the cleaning fluid and exudate, the external negative pressure device is turned off, and the second and third one-way valves are closed. In this way, when oxygen or cleaning fluid is being delivered, the closure of the second and third one-way valves prevents the oxygen or cleaning fluid from being discharged through the connecting tube 230 or the negative pressure drainage tube 220, thereby avoiding waste of oxygen or cleaning fluid and improving the reliability of the dressing.

[0039] A waterproof membrane 121 is provided around the outer edges of the foam dressing layer 120, secured to the bottom of the backing layer 110. The bottom of the waterproof membrane 121 extends to the outer wall of the contact layer 130. The waterproof membrane 121 provides waterproofing around the sides of the contact layer 130, preventing internal exudate or saline from seeping out from around the contact layer 130.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A functional dressing for oxygen supply or negative pressure flushing, characterized in that: It includes a dressing body and a feeding and flushing assembly connected to the top of the dressing body, wherein: The dressing body comprises a contact layer for bonding to the wound, a foam dressing layer, and a backing layer which are stacked in sequence; The feed and flushing assembly includes a feed pipe and a negative pressure drainage pipe extending into the middle of the foam dressing layer; During the oxygen or liquid supply process, external oxygen or cleaning liquid is injected into the foam dressing layer through the inlet end of the supply tube to increase the oxygen content in the wound or clean the wound; During the process of draining out the exudate and the cleaning fluid, the exudate and the cleaning fluid are discharged through the negative pressure drainage tube under the action of negative pressure.

2. The functional dressing for oxygen supply or negative pressure flushing according to claim 1, characterized in that: Two through holes are provided in the middle of the backing layer, and the feeding pipe and the negative pressure drainage pipe pass through the two through holes in a one-to-one correspondence.

3. The functional dressing for oxygen supply or negative pressure flushing according to claim 2, characterized in that: An annular tube is provided in the foam dressing layer, and a plurality of liquid inlet holes are opened on the annular tube.

4. The functional dressing for oxygen supply or negative pressure flushing according to claim 3, characterized in that: The annular tube is communicated with the negative pressure drainage tube through a connecting tube.

5. The functional dressing for oxygen supply or negative pressure flushing according to claim 4, characterized in that: The feeding pipe and the negative pressure drainage pipe both include a detachably connected vertical section and a connecting section, the vertical section passing through a corresponding through hole; the connecting pipe is detachably connected to the connecting section of the negative pressure drainage pipe.

6. The functional dressing for oxygen supply or negative pressure flushing according to claim 5, characterized in that: The vertical section of the feed pipe is provided with a first one-way valve; the vertical section of the negative pressure drainage pipe is provided with a second one-way valve; and the connecting pipe is provided with a third one-way valve.

7. The functional dressing for oxygen supply or negative pressure flushing according to claim 6, characterized in that: During the oxygen or liquid supply process, the first one-way valve opens under the push of oxygen or cleaning liquid, allowing the oxygen or cleaning liquid to act on the wound; at the same time, the second one-way valve and the third one-way valve are closed, blocking the negative pressure drainage tube and the connecting tube to prevent the discharge of oxygen or cleaning liquid.

8. The functional dressing for oxygen supply or negative pressure flushing according to claim 6, characterized in that: During the process of drawing out the exudate and cleaning fluid, the second one-way valve and the third one-way valve are opened, so that the cleaning fluid and the exudate enter the annular tube through the multiple liquid inlet holes, then enter the negative pressure drainage tube through the connecting tube, and finally are discharged to the outside through the negative pressure drainage tube.

9. The functional dressing for oxygen supply or negative pressure flushing according to claim 1, characterized in that: A release film is adhered to the bottom of the contact layer.

10. The functional dressing for oxygen supply or negative pressure flushing according to claim 1, characterized in that: A waterproof membrane fixed to the bottom of the backing layer is provided on the outer sides of the foam dressing layer.

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