Negative pressure medicine applying device for wound healing

Abstract

The invention discloses a negative pressure medicine application device for wound healing, which belongs to the technical field of wound treatment and comprises a support frame seat, a flexible negative pressure fitting part is arranged at the bottom of the support frame seat, a negative pressure extraction part externally connected with a negative pressure device is arranged on the support frame seat, and the support frame seat is connected with a switching end through a sliding connecting part. The switching end is provided with a medicine extruding roller shaft, a medicine applying roller shaft and a film covering roller shaft; a protective cover is arranged on the supporting frame seat, the protective cover is connected with two oppositely-arranged pushing buttons through limiting connecting pieces, and the bottoms of the pushing buttons are connected with a pressure applying plate through pressure applying rotating rod pieces. Sealing film wound covering is conducted through the covering roller shaft, a pre-pressing sealing environment is formed through synchronous downward pressing of the constant-pressure frame body and the pressure applying plate, the pressure in the sealing environment is increased, gas in a wound area below is exhausted, a stable pressure field is established before negative pressure extraction, the medicine permeation time is prolonged, and the wound healing effect is improved. And the situation that the liquid medicine is pumped away due to the negative pressure device is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of wound treatment, and in particular to a negative pressure dressing device for wound healing. Background Art

[0002] Negative pressure wound therapy is an advanced technology that promotes wound healing through controllable negative pressure and is commonly used in the treatment of complex or difficult-to-heal wounds. It uses a vacuum pump to suck, creating negative pressure in the system pipeline to achieve continuous or intermittent wound drainage or provide a negative pressure environment to assist wound closure, for removing cavity or wound surface secretions and necrotic tissues.

[0003] During the wound treatment process, negative pressure treatment is often carried out on the wound to quickly heal it. The first step is to debride the wound. After debridement, in order to avoid exudate and help the wound recover, in some treatments, a certain amount of medicinal liquid is added to treat the wound, and then a dressing is covered on the wound. Through the way of negative pressure extraction, a closed environment is formed by a medical sponge and a sealing film, and a negative pressure of 75 - 125 mmHg is applied continuously or intermittently to help the wound on the wound surface recover. In current use, when negative pressure is extracted by a negative pressure device, when the sealing film has not fully contacted the skin, a negative pressure space often cannot be generated, and medical staff need to closely attach the sealing film to the skin first before proceeding to the next step. Touching the wound poses an infection risk, and some medicinal liquids will be sucked out first during negative pressure extraction, which greatly reduces the use effect of the medicinal liquid. As a result, the method of adding medicinal liquid and negative pressure is mostly not used in subsequent treatments. Based on this, a negative pressure dressing device for wound healing is now proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a negative pressure dressing device for wound healing.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A negative pressure dressing device for wound healing, including a support frame base, a flexible negative pressure fitting is arranged at the bottom of the support frame base, a negative pressure extraction part for connecting an external negative pressure device is arranged on the support frame base, the support frame base is connected with a switching end through a sliding connecting part, and a medicine squeezing roller shaft, a medicine applying roller shaft and a film covering roller shaft are arranged on the switching end; A protective cover is arranged on the support frame base, the protective cover is connected with two oppositely arranged push buttons through a limit connecting part, the bottom of the push button is connected with a pressure applying plate through a pressure applying rotating rod part, the pressure applying plate is connected with a constant pressure frame body through an elastic biasing part, and a corresponding port adapted to the negative pressure extraction part is opened on the constant pressure frame body.

[0006] As a preferred solution, the negative pressure extraction component includes a docking pipe cover and a flat pipe. An air connection pipe is arranged on the docking pipe cover. A plurality of air suction pipes are arranged at the end of the flat pipe, and the air suction holes of the air suction pipes are arranged downward.

[0007] As a preferred solution, the sliding connection component includes a rectangular moving port opened on the support frame base. A push rod penetrating through the rectangular moving port is fixedly connected to the side wall of the switching end, and a knob is arranged at the end of the push rod.

[0008] As a preferred solution, a sealing film is wound around the film covering roller shaft. An adhesion layer for adhering the sealing film is arranged on one side of the support frame base. The inside of the medicine extrusion roller shaft is hollow, and medicine extrusion holes are arranged on its surface.

[0009] As a preferred solution, the limit connection component includes a sliding port opened on the top of the protective cover. The push button is slidably connected to the inner wall of the sliding port through a sliding block, and a magnetic attraction layer is arranged on the contact surface of the sliding block.

[0010] As a preferred solution, the pressure application rotating rod component includes a U-shaped connection seat fixedly arranged on the pressure application plate. The bottom of the sliding block is rotatably connected to the U-shaped connection seat through a pressure application rod.

[0011] As a preferred solution, the elastic biasing component includes a connection block arranged on the side wall of the constant pressure frame body. L-shaped connecting plates are arranged on both sides of the pressure application plate, and the L-shaped connecting plates and the connection block are connected through connection springs.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention realizes uniform drug application to the wound tissue through the cooperation of the medicine extrusion roller shaft and the medicine coating roller shaft, ensures full contact between the drug and the wound surface, and realizes automatic and uniform fitting of the sealing film through the cooperation between the film covering roller shaft and the constant pressure frame body, without the need for medical staff to manually press the wound, significantly reducing the infection caused by direct contact with the wound surface.

[0013] 2. The present invention performs wound film covering on the wound with the film covering roller shaft, forms a pre-pressure sealing environment when the constant pressure frame body and the pressure application plate are synchronously pressed down, and increases the pressure in the sealing environment, so that the gas in the wound area below is discharged, establishing a stable pressure field before negative pressure extraction, prolonging the drug penetration time, and avoiding the situation that the liquid medicine is sucked away by the negative pressure device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional assembly structure schematic diagram of a negative pressure dressing device for wound healing proposed by the present invention; Figure 2 is a combined state schematic diagram of a negative pressure dressing device for wound healing proposed by the present invention; Figure 3 isFigure 2 Schematic diagram of the enlarged structure at A in the [specific object]; Figure 4 Schematic three - dimensional structure diagram of a negative - pressure medicine - applying device for wound healing proposed by the present invention; Figure 5 Schematic structure diagram of a sliding connecting member, a pressure - applying rotating rod member, and an elastic biasing member in a negative - pressure medicine - applying device for wound healing proposed by the present invention; Figure 6 Schematic structure diagram of the positional relationship among a medicine - squeezing roller shaft, a medicine - applying roller shaft, and a film - covering roller shaft in a negative - pressure medicine - applying device for wound healing proposed by the present invention; Figure 7 Schematic structure diagram of a negative - pressure extraction member in a negative - pressure medicine - applying device for wound healing proposed by the present invention.

[0015] In the figure: 1. Support frame base; 2. Flexible negative - pressure fitting; 3. Switching end; 4. Medicine - squeezing roller shaft; 5. Medicine - applying roller shaft; 6. Film - covering roller shaft; 7. Protective cover; 8. Push button; 9. Pressure - applying plate; 10. Constant - pressure frame body; 11. Corresponding port; 12. Docking pipe cover; 13. Flat tube; 14. Rectangular moving port; 15. Push rod; 16. Adhesive layer; 17. Sliding port; 18. Sliding block; 19. U - shaped connecting seat; 20. Pressure - applying rod; 21. Connecting block; 22. L - shaped connecting plate. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0019] Example, refer to Figures 1 to 7 , a negative pressure dressing device for wound healing, including a support frame base 1. A flexible negative pressure fitting 2 is provided at the bottom of the support frame base 1. A negative pressure extraction member for an external negative pressure device is provided on the support frame base 1. A corresponding port 11 adapted to the negative pressure extraction member is opened on the constant pressure frame body 10. Before film covering, the negative pressure extraction member is placed at the corresponding port 11 so that its suction pipe is in the central position, and then the external negative pressure device is used to extract the gas under the sealing film. Among them, through the suction of a vacuum pump, negative pressure is generated in the system pipeline to achieve the purpose of continuously or intermittently draining the wound surface or providing a negative pressure environment to assist wound closure, so as to meet the effect of subsequent negative pressure treatment.

[0020] The negative pressure extraction member includes a docking pipe cover 12 and a flat pipe 13. An air intake pipe is provided on the docking pipe cover 12. A plurality of suction pipes are provided at the end of the flat pipe 13, and the suction holes of the suction pipes are arranged downward.

[0021] The support frame base 1 is connected with a switching end 3 through a sliding connecting member. The sliding connecting member includes a rectangular moving port 14 opened on the support frame base 1. A push rod 15 penetrating through the rectangular moving port 14 is fixedly connected to the side wall of the switching end 3, and a knob is provided at the end of the push rod 15.

[0022] A medicine squeezing roller shaft 4, a medicine applying roller shaft 5 and a film covering roller shaft 6 are provided on the switching end 3. A sealing film is wound around the film covering roller shaft 6. An adhesion layer 16 for adhering the sealing film is provided on one side of the support frame base 1. The inside of the medicine squeezing roller shaft 4 is hollow, and medicine squeezing holes are provided on its surface. The medicine squeezing roller shaft 4 is externally connected to a medicine injection device, and the medicine liquid is injected from the medicine squeezing holes on the medicine squeezing roller shaft 4 onto the tissue.

[0023] It should be noted that the film covering roller shaft 6 is rotated near the adhesion layer 16, so that the original film covering roller shaft 6 above is rotated to below. And when rotating, the adhesion layer 16 will contact the film covering roller shaft 6 to realize the contact with the sealing film wound around the film covering roller shaft 6 and achieve the effect of adhering the sealing film.

[0024] A protective cover 7 is provided on the support frame base 1. The protective cover 7 is arranged on one side of the support frame base 1. When the control constant pressure frame body 10 moves downward, the medicine extrusion roller shaft 4, the medicine coating roller shaft 5 and the film laminating roller shaft 6 are all on the side not covered by the protective cover 7, so it will not affect the downward movement of the constant pressure frame body 10. The protective cover 7 is connected with two oppositely arranged push buttons 8 through a limit connecting piece. Further, the limit connecting piece includes a sliding opening 17 opened at the top of the protective cover 7. The push button 8 is slidably connected with the inner wall of the sliding opening 17 through a sliding block 18. A magnetic adsorption layer is arranged on the contact surface of the sliding block 18. When the two sliding blocks 18 move towards the middle and contact each other, the two sliding blocks 18 can be adsorbed to each other through the magnetic adsorption layer.

[0025] The bottom of the push button 8 is connected with a pressure application plate 9 through a pressure application rotating rod member. Further, the pressure application rotating rod member includes a U-shaped connecting seat 19 fixedly arranged on the pressure application plate 9. The bottom of the sliding block 18 is rotationally connected with the U-shaped connecting seat 19 through a pressure application rod 20.

[0026] The pressure application plate 9 is connected with the constant pressure frame body 10 through an elastic biasing member. The elastic biasing member includes a connecting block 21 arranged on the side wall of the constant pressure frame body 10. L-shaped connecting plates 22 are arranged on both sides of the pressure application plate 9. A connecting spring is connected between the L-shaped connecting plates 22 and the connecting block 21.

[0027] Under the action of the elastic biasing member, when the pressure application plate 9 moves downward, it can drive the constant pressure frame body 10 to move downward synchronously, so that the constant pressure frame body 10 can contact the sealing film first, and then the constant pressure frame body 10 will squeeze the sealing film and the skin to form a rectangular negative pressure area, and the constant pressure frame body 10 can ensure that the four sides of the sealing film are in a state of pressure application and sealing.

[0028] In the wound healing treatment of the present invention, the wound is first disinfected, and after disinfection, the support frame base 1 is placed at the wound. At this time, by moving the switching end 3, the medicine extrusion roller shaft 4 and the medicine coating roller shaft 5 below are in contact with the tissue at the wound. At this time, the medicine extrusion roller shaft 4 is externally connected with a medicine injection device, and the medicine liquid will be injected into the tissue from the medicine extrusion holes on the medicine extrusion roller shaft 4. When the medicine coating roller shaft 5 moves, it will evenly contact the tissue with the medicine liquid, so as to complete the medicine application to the tissue; After the medicine application is completed, the film laminating roller shaft 6 is rotated near the adhesion layer 16, so that the original film laminating roller shaft 6 above is rotated to below, and when rotating, the adhesion layer 16 will contact the film laminating roller shaft 6 to realize the contact with the sealing film wound on the film laminating roller shaft 6 and realize the pasting of the sealing film. At this time, by moving the switching end 3, the sealing film on the film laminating roller shaft 6 can be contacted with the tissue, and the sealing film will evenly contact the skin tissue under the action of the film laminating roller shaft 6; When completing the sterile film covering of the wound, move the push buttons 8 on both sides towards the middle. During the movement, the pressure rod 20 connected to the push button 8 will drive the pressure plate 9 connected to it through the U-shaped connecting seat 19 to move downward. At this time, the downward pressure of the pressure plate 9 will drive the constant-pressure frame 10 to squeeze downward, so that the constant-pressure frame 10 will squeeze the sealing film against the skin to form a rectangular negative-pressure area. At this time, since the constant-pressure frame 10 cannot move, the pressure plate 9 will move downward. The pressure in the sealed space formed between the pressure plate 9, the constant-pressure frame 10 and the sealing film will increase continuously as the pressure plate 9 moves downward. Due to the increase in the pressure above, the sealing film will generate a downward pressure. Under the action of this pressure, the gas originally at the wound will be squeezed out through the negative-pressure extraction part. Moreover, the pressure generated by the downward movement of the pressure plate 9 is equal everywhere on the sealing film, so the sealing film will be uniformly stressed, enabling the originally applied liquid medicine to come into uniform contact with the skin. When the pressing is completed and then the negative-pressure device is used for suction, the liquid medicine will not be sucked out in advance, ensuring the effect of wound medicine application plus negative-pressure treatment.

[0029] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A negative pressure dressing device for wound healing, comprising a support frame base (1), characterized in that, A flexible negative pressure fitting member (2) is provided at the bottom of the support frame base (1). A negative pressure extraction member for connecting to an external negative pressure device is provided on the support frame base (1). The support frame base (1) is connected to a switching end (3) through a sliding connection member. A medicine extrusion roller shaft (4), a medicine coating roller shaft (5), and a film laminating roller shaft (6) are provided on the switching end (3). A protective cover (7) is provided on the support frame base (1). The protective cover (7) is connected to two oppositely arranged push buttons (8) through a limit connection member. The bottom of the push button (8) is connected to a pressure application plate (9) through a pressure application rotating rod member. The pressure application plate (9) is connected to a constant pressure frame body (10) through an elastic biasing member. A corresponding port (11) adapted to the negative pressure extraction member is provided on the constant pressure frame body (10).

2. The negative pressure dressing device for wound healing according to claim 1, wherein The negative pressure extraction member includes a docking pipe cover (12) and a flat pipe (13). An air connection pipe is provided on the docking pipe cover (12). A plurality of air suction pipes are provided at the end of the flat pipe (13). The suction holes of the air suction pipes are arranged downward.

3. The negative pressure dressing device for wound healing according to claim 1, wherein The sliding connection member includes a rectangular moving port (14) opened on the support frame base (1). A push rod (15) penetrating through the rectangular moving port (14) is fixedly connected to the side wall of the switching end (3). A knob is provided at the end of the push rod (15).

4. The negative pressure dressing device for wound healing according to claim 1, characterized in that, A sealing film is wound around the film laminating roller shaft (6). An adhesion layer (16) for adhering the sealing film is provided on one side of the support frame base (1). The inside of the medicine extrusion roller shaft (4) is hollow, and medicine extrusion holes are provided on its surface.

5. The negative pressure dressing device for wound healing according to claim 1, characterized in that, The limit connection member includes a sliding port (17) opened at the top of the protective cover (7). The push button (8) is slidably connected to the inner wall of the sliding port (17) through a sliding block (18). A magnetic attraction layer is provided on the contact surface of the sliding block (18).

6. The negative pressure dressing device for wound healing according to claim 5, wherein, The pressure application rotating rod member includes a U-shaped connection seat (19) fixedly provided on the pressure application plate (9). The bottom of the sliding block (18) is rotatably connected to the U-shaped connection seat (19) through a pressure application rod (20).

7. A negative pressure dressing device for wound healing according to claim 1, characterized in that, The elastic biasing member includes a connection block (21) provided on the side wall of the constant pressure frame body (10). L-shaped connecting plates (22) are provided on both sides of the pressure application plate (9). A connecting spring is connected between the L-shaped connecting plates (22) and the connection block (21).

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