Diversion trough type negative pressure drainage device

Abstract

The present invention discloses a guide groove type negative pressure drainage device, which includes a drainage connector laid flat on a porous dressing; a drainage support is arranged on the top of the drainage connector, a hollow joint is sleeved on the drainage support, and the joint is connected to the drainage support, and the other end of the joint is connected to an external drainage tube, and the external drainage tube is connected to an effusion bottle and a negative pressure source; a drainage central through hole is arranged in the center of the drainage support; the outer wall of the drainage support symmetrically and horizontally penetrates the wall of the drainage support along the circumferential direction; vertical drainage grooves are symmetrically provided on the outer wall of the drainage support in the vertical direction; multiple guide holes are intermittently penetrated on the inner wall of the drainage connector in contact with the porous dressing, and multiple guide grooves are provided on the outer wall surface of the drainage device, and each guide groove is arranged along the drainage hole to the drainage support and is connected with the drainage hole on the outer wall of the drainage support and the vertical drainage groove. The device of the present invention can be used with a variety of porous dressings at the same time to achieve negative pressure closed drainage treatment.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a guide trough type negative pressure drainage device, which is applied to surgical treatment and nursing of various wound surfaces and traumas. Background Art

[0002] Negative pressure sealing drainage technology is a new technology for treating trauma and healing wounds developed in recent years. Since 1995, this new technology has been clinically verified in major hospitals across China. At the same time, various medical companies and medical device products related to negative pressure sealing drainage technology have sprung up like mushrooms after rain. By 2019, negative pressure sealing drainage technology has made rapid progress in global wound surface applications. The unique simplicity, reliability and therapeutic effect of this technology have been recognized and approved by medical staff in departments such as trauma and burns. Negative pressure sealing drainage technology is mainly achieved by creating a negative pressure sealing drainage system, which mainly includes a porous foam, a drainage device and a sealing film for sealing the system. The porous foam is first cut to size as needed, and then laid on the wound surface to be drained. The porous foam and skin tissue are sealed with a medical sealing film, and the porous foam and the negative pressure source are connected through the drainage device, thereby establishing a closed drainage area isolated from the outside on the wound surface to be drained, so that the system can perform continuous negative pressure sealing drainage and treatment.

[0003] At present, the drainage device in the negative pressure sealing drainage technology is generally one of the built-in drainage tube or the upper cavity type drainage device, but both devices have certain limitations. When the built-in drainage tube is used clinically, the sealing operation of the medical film is complicated, and long-term professional training and accumulated operation experience are required to effectively solve various sealing problems in actual clinical applications; at the same time, the built-in drainage tube has corresponding pressure on the wound surface under the action of external negative pressure, leaving a white mark of the drainage tube pressure on the wound surface, which makes the patient have a poor user experience. When the upper cavity type drainage device is used clinically, although the operation of the medical sealing film is relatively simple and there is no indentation, the drainage effect of the upper cavity type drainage device is worse than that of the built-in drainage tube, and in the upper cavity type drainage device, because the cavity structure of the drainage device cannot be destroyed, different sizes of drainage devices must be used for different wound sizes, and special models of dedicated drainage connectors must be used in special parts, which limits the convenience and operability of the cavity type drainage device in various actual clinical operations. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a guide trough type negative pressure drainage device. The device is connected with a negative pressure drainage device to effectively realize the drainage treatment of wounds, burns and other wounds of various parts and sizes of the human body, facilitate the operation of medical staff, increase the convenience of patient treatment, improve the adaptability of the drainage device and traumatic wounds, reduce the probability of postoperative complications caused by infection, bleeding, body fluid leakage, etc., accelerate wound healing, and enhance the treatment effect.

[0005] To achieve the above-mentioned purpose, the present invention is designed to provide a drainage trough type negative pressure drainage device, which includes a drainage connector laid flat on a porous dressing; and the porous dressing is in contact with the surface of the patient's skin wound; a drainage support is arranged on the top of the drainage connector, a hollow joint is sleeved on the drainage support, and the joint is connected to the drainage support, and the other end of the joint is connected to an external drainage tube, and the external drainage tube is connected to an effusion bottle and a negative pressure source; a drainage central through hole is arranged in the center of the drainage support; a plurality of vertical drainage grooves are symmetrically opened on the outer wall of the drainage support in the vertical direction; a drainage through hole is arranged on the vertical drainage groove and horizontally penetrates the wall of the drainage support; the drainage through hole is connected to the drainage central through hole;

[0006] The inner wall of the drainage connector in contact with the porous dressing is provided with a plurality of drainage holes at intervals; the outer wall surface of the drainage device is provided with a plurality of guide grooves, and each guide groove is arranged along the drainage hole to the drainage support and is connected with the drainage hole and the vertical drainage groove on the outer wall of the drainage support (the drainage holes are distributed in the diversion flushing groove in proportion along the direction of the guide groove).

[0007] Furthermore, the bottom of the drainage central through hole of the drainage support is a closed structure or an open structure.

[0008] Furthermore, a small diversion through hole is provided at the bottom of the drainage central through hole.

[0009] Furthermore, the width of the drainage hole is smaller than the width of the guide groove.

[0010] Furthermore, the drainage connector is circular or consists of a plurality of symmetrically arranged drainage support plates.

[0011] Furthermore, the shape of the drainage holes is selected from the group consisting of circular, elliptical, square and diamond.

[0012] Furthermore, the drainage connector is made of a soft transparent elastomer material.

[0013] Beneficial effects of the present invention:

[0014] 1. The present invention uses an external drainage groove to replace the external catheter drainage, thereby reducing the patient's pain;

[0015] 2. The present invention completely wraps the wound area to be flushed and drained, closely fits the wound area, and improves the treatment effect;

[0016] 3. The claw-shaped structural rubber sleeve in the guide groove type negative pressure drainage guide connector of the present invention is made of transparent material, which is conducive to the observation of the clinical treatment process in the later stage;

[0017] 4. The claw-shaped rubber sleeve of the present invention can be cut to the size of the claw-shaped structure according to the actual location of the patient's injury, thereby reducing the patient's discomfort;

[0018] 5. The device of the present invention can be used in conjunction with a variety of porous dressings to achieve negative pressure sealing drainage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a guide trough type negative pressure drainage device;

[0020] Figure 2 A connection diagram for the drainage connector and the joint;

[0021] Figure 3 This is a detailed view of the drainage connector;

[0022] Figure 4 It is a flow diagram of drainage fluid;

[0023] Figure 5 is a cross-sectional view of the joint;

[0024] Figure 6 A top view of a guide plate composed of three guide branches;

[0025] Figure 7 for Figure 6 Bottom view of

[0026] Figure 8 A top view of a guide plate composed of four guide branches;

[0027] Fig. 9 for Figure 8 Bottom view of

[0028] Fig.10 It is a top view of the circular guide plate;

[0029] Fig.11 for Fig.10 Bottom view of

[0030] In the figure, there are porous dressing 1, drainage connector 2, drainage support 2.1, drainage central through hole 2.11, drainage flow hole 2.13, vertical drainage groove 2.12, drainage small through hole 2.14, guide plate 2.2, guide flow hole 2.21, guide groove 2.22, joint 3, external drainage tube 4, fluid collection bottle 5, and negative pressure source 6. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments so as to be understood by those skilled in the art.

[0032] Example 1

[0033] like Figures 1 to 5 The drainage trough type negative pressure drainage device shown in the figure comprises a drainage connector 2 laid flat on the porous dressing 1; the porous dressing 1 is in contact with the wound surface of the patient's skin; the drainage connector 2 is made of a soft transparent elastic material; the drainage connector 2 is composed of an upper drainage support 2.1 and a lower drainage plate 2.2, the drainage plate 2.2 is composed of three symmetrical drainage support plates in a fan shape; a hollow joint 3 is sleeved on the drainage support 2.1, and the joint 3 is connected to the drainage support 2.1, and the other end of the joint 3 is connected to an external drainage tube 4, and the external drainage tube 4 is connected to a fluid collection bottle 5 and a negative pressure source 6;

[0034] A drainage central through hole 2.11 is provided in the center of the drainage support 2.1; a drainage small through hole 2.14 is provided at the bottom of the drainage central through hole 2.11; three vertical drainage grooves 2.12 are symmetrically provided on the outer wall of the drainage support 2.1 in the vertical direction; a drainage flow hole 2.13 is provided on the vertical drainage groove 2.12 and runs horizontally through the wall of the drainage support 2.1; the drainage flow hole 2.13 is connected to the drainage central through hole 2.11;

[0035] A plurality of elliptical flow-conducting holes 2.21 are intermittently penetrated on the inner wall of the flow-conducting plate 2.2 in contact with the porous dressing 1, a plurality of flow-conducting grooves 2.22 are opened on the outer wall surface of the flow-conducting plate 2.2, and each flow-conducting groove 2.22 is arranged along the flow-conducting hole 2.21 to the drainage support 2.1, and is connected with the drainage flow-conducting hole 2.13 and the vertical drainage groove 2.12 on the outer wall of the drainage support 2.1, and the width dimension of the flow-conducting hole 2.21 is smaller than the width dimension of the flow-conducting groove 2.22.

[0036] The working process of the above-mentioned guide groove type negative pressure drainage device is 1) cutting the porous dressing 1 according to the size of the patient's wound burn skin surface, and then placing it on the patient's wound burn skin surface to be drained, the porous dressing 1 is in contact with the patient's wound skin surface, and the drainage device 2 is cut in conjunction with the porous dressing 1, and then placed or covered on the outside of the porous dressing 1 after completion;

[0037] 2) subsequently using a sealing film 7 to seal the drainage device 2, the porous dressing 1 and the skin of the surrounding area, and then using the sealing film 7 to seal the connector 3 and the drainage device 2;

[0038] 3) The external drainage tube 4 is connected and fixed to the drainage device 2 through the joint 3, so that the device forms a closed environment. Finally, the negative pressure source 6 device is turned on, and the drainage device 2 is connected to the negative pressure system through the diversion holes 2.21, the diversion grooves 2.22, the drainage central through hole 2.11, the drainage holes 2.13, the vertical drainage grooves 2.12, the joint 3 and the external drainage tube 4, thereby forming a negative pressure closed drainage environment for the drainage area on the surface of skin trauma and burns; the liquid enters the effusion bottle 5 through the diversion holes 2.21, the diversion grooves 2.22, the drainage central through hole 2.11, the drainage holes 2.13, the vertical drainage grooves 2.12, the joint 3 and the external drainage tube 4.

[0039] Example 2

[0040] like Figures 6-7 The structure of the guide groove type negative pressure drainage device shown in this embodiment is basically the same as that of embodiment 1, except that:

[0041] The guide plate 2.2 is composed of four symmetrical guide branches in a butterfly shape; the guide grooves 2.22 on the surface of each guide branch are distributed in a Y shape.

[0042] Example 3

[0043] like Figures 6-7 The structure of the guide trough type negative pressure drainage device in this embodiment is basically the same as that of embodiment 1, except that:

[0044] The guide plate 2.2 is a disc structure, and a plurality of guide holes 2.21 are evenly distributed on the circumference of the guide plate 2.2 according to the center of the circle. The outer wall surface of the guide plate 2.2 is provided with a circular guide groove 2.22 and a linear guide groove 2.22 connecting the circular guide grooves. The guide groove 2.22 is arranged along the guide hole 2.21 to the guide support 2.1 and is connected to the guide hole 2.11 in the guide support 2.1. The guide groove 2.22 can be set as one, two, three or more as needed, but the number of the guide grooves 2.22 cannot be more than the number of the guide holes 2.21.

[0045] Although the above embodiments have been described in detail, they are only a part of the embodiments of the present invention, not all of them. People can also obtain other embodiments based on this embodiment without creativity, and these embodiments all belong to the protection scope of the present invention.

Claims

1. A guide trough type negative pressure drainage device, characterized in that: It comprises a drainage connector (2) laid flat on a porous dressing (1); the porous dressing (1) is in contact with the wound surface of the patient's skin; the drainage connector (2) is composed of an upper drainage support (2.1) and a lower guide plate (2.2); the drainage support (2.1) is sleeved with a hollow joint (3), and the joint (3) is connected to the drainage support (2.1); the other end of the joint (3) is connected to an external drainage tube (4), and the external drainage tube (4) is connected to an effusion bottle (5) and a negative pressure source (6); a drainage central through hole (2.11) is provided in the center of the drainage support (2.1), and the bottom of the drainage central through hole (2.11) is a closed structure or an open structure; the outer wall of the drainage support (2.1) is symmetrically provided with a plurality of vertical drainage grooves (2.12) in the vertical direction; the vertical drainage grooves (2.12) are provided with a horizontally penetrating drainage support ( 2.1) a drainage hole (2.13) on the wall; the drainage hole (2.13) is connected to the drainage central through hole (2.11); a plurality of drainage holes (2.21) are intermittently penetrated on the inner wall of the guide plate (2.2) in contact with the porous dressing (1); a plurality of guide grooves (2.22) are provided on the outer wall surface of the guide plate (2.2), and each guide groove (2.22) is arranged along the guide hole (2.21) to the drainage support (2.1) and is connected to the guide hole (2.21) with the drainage hole (2.13) and the vertical drainage groove (2.12) on the outer wall of the drainage support (2.1); and a small drainage through hole (2.14) is provided at the bottom of the drainage central through hole (2.11).

2. The guide groove type negative pressure drainage device according to claim 1, characterized in that: The width dimension of the flow guide hole (2.21) is smaller than the width dimension of the flow guide groove (2.22).

3. The guide groove type negative pressure drainage device according to claim 1, characterized in that: The guide plate (2.2) is circular or is composed of a plurality of symmetrically arranged guide branches.

4. The guide groove type negative pressure drainage device according to claim 2 or 3, characterized in that: The shape of the flow-conducting hole (2.21) is selected from the group consisting of circular, elliptical, square and diamond.

5. The guide trough type negative pressure drainage device according to claim 2 or 3, characterized in that: The drainage connector (2) is made of a soft transparent elastic material.

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