Superficial tissue defect drainage device

Abstract

The present invention provides a superficial tissue defect drainage device, including a drainage tube and a negative pressure drainage device, wherein the negative pressure drainage device includes: a circular drainage disk, one side of which is provided with a mating opening, and the other side is provided with a connecting tube; a porous filter joint is provided on one end of the connecting tube extending into the circular drainage disk, and a negative pressure indicator is connected to the porous filter joint; the negative pressure drainer is detachably arranged in the mating opening of the circular drainage disk; one end of the connecting tube is detachably connected to the drainage tube, and the other end is detachably connected to the negative pressure drainer; a piston assembly is movably arranged in the negative pressure drainer; and a reeling assembly is arranged in the circular drainage disk, and the reeling assembly is connected to the piston assembly through a traction rope. The device can achieve continuous negative pressure drainage, and alarm when the pressure drops to the lower limit negative pressure. According to the situation of the negative pressure drainer, the reeling assembly is started and driven to increase the negative pressure to the set upper limit. The device is convenient to use and easy to carry.

Description

Technical Field

[0001] The invention belongs to the technical field of negative pressure drainage, and in particular relates to a superficial tissue defect drainage device. Background Art

[0002] VSD negative pressure closed drainage technology is a technology that uses VSD materials, semipermeable membranes, three-way pipes and negative pressure aspirators for negative pressure aspiration. It is mainly used for superficial wounds and deep drainage. It can completely remove exudate and necrotic tissue in the cavity or drainage area of ​​the wound, and accelerate wound healing.

[0003] However, existing superficial wound negative pressure drainage devices (VSD) have the disadvantages of being expensive, inconvenient for patients to carry, restricting patients' activities, complicated to operate, and not suitable for nursing. For example, the currently used negative pressure drainage devices mainly use a negative pressure drainage ball connected to a negative pressure drainage tube. When the pressure value is not enough for negative pressure suction, the negative pressure needs to be adjusted manually, which is inconvenient to use. In addition, there is no negative pressure indicator, and the pressure value cannot be observed. The pressure value can only be evaluated and predicted based on experience, and the safety is relatively low. Summary of the invention

[0004] To solve the above problems, the purpose of the present invention is to provide a superficial tissue defect drainage device, which is connected to the reeling assembly through a negative pressure indicator, can drive the piston assembly to move, and is used to adjust the negative pressure. It is easy and quick to use and has high safety.

[0005] Another object of the present invention is to provide a superficial tissue defect drainage device, which accommodates a negative pressure drainer in a circular drainage tray, is easy to carry, and has a low cost.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows.

[0007] A superficial tissue defect drainage device comprises a drainage tube and a negative pressure drainage device, wherein the negative pressure drainage device comprises:

[0008] A circular drainage plate, one side of which is provided with a mating opening, and the other side of which is provided with a connecting tube; a porous filter joint is provided on one end of the connecting tube extending into the circular drainage plate, and a negative pressure indicator is connected to the porous filter joint;

[0009] A negative pressure drainer is detachably arranged in the matching opening of the circular drain plate; one end of the connecting tube is detachably connected to the drainage tube, and the other end is detachably connected to the negative pressure drainer;

[0010] A piston assembly is movably disposed in the negative pressure drain device; and

[0011] The reeling assembly is arranged in the circular drainage plate, and the reeling assembly is connected to the piston assembly through a traction rope, and is used for traction of the piston assembly to move.

[0012] Furthermore, the negative pressure drainer and the piston assembly are both arc-shaped, and their shapes match each other;

[0013] The piston assembly comprises a piston and an arc-shaped push rod, one end of the arc-shaped push rod is threadedly connected to the piston; the traction rope passes through the arc-shaped push rod and is detachably connected to the piston.

[0014] Furthermore, a circular groove is provided on one side of the piston, a circular convex is provided on one side of the arc-shaped push rod, and the circular convex is threadedly connected to the circular groove;

[0015] A stud is arranged on the inner side of the circular groove; a nut is arranged on the inner side of the circular convex portion, and the stud is inserted into the nut and is threadedly connected with the nut;

[0016] A through hole is arranged on one end of the stud extending to the arc-shaped push rod, and a hook is arranged on one end of the traction rope, and the hook is hung on the through hole.

[0017] Further, the reel assembly comprises:

[0018] A rope reel connected to one end of the traction rope and used to reel in the traction rope;

[0019] A transmission shaft, one end of which passes through the rope reel and is detachably connected to the rope reel;

[0020] A motor is detachably connected to one end of the transmission shaft; the motor can drive the rope reel to rotate.

[0021] Furthermore, the circular drainage plate is provided with a first accommodating cavity and a second accommodating cavity separately;

[0022] The first accommodating chamber is arranged at a side close to the mating opening, and is used to accommodate the negative pressure drainer;

[0023] The second accommodating chamber is arranged at a side close to the connecting pipe, and is used to accommodate the negative pressure indicator and the retracting assembly;

[0024] A spherical clamping portion is provided at one end of the first accommodating cavity, and one end of the negative pressure drainer abuts against the spherical clamping portion.

[0025] Furthermore, a limiting circular hole is provided on the spherical clamping portion, one end of the traction rope passes through the limiting circular hole and is connected to a limiting circular ring, the size of the limiting circular ring is larger than the size of the limiting circular hole, and the limiting circular ring is detachably connected to the piston assembly.

[0026] Further, the drainage tube comprises:

[0027] The first drainage tube has a plurality of side holes evenly distributed on its side wall and arranged in a spiral shape;

[0028] The second drainage tube has one end sealedly connected to the connecting tube thread, and the other end is provided with a butterfly adhesive cloth; the distance between the butterfly adhesive cloth and the adjacent side hole is 10-20mm; the second drainage tube and the first drainage tube are integrally formed and connected to each other.

[0029] Furthermore, a suspension component is provided on the side wall of the circular drainage disk for external suspension; the suspension component is provided on a side of the circular drainage disk close to the reeling component.

[0030] Furthermore, a hose connector is provided on one end of the connecting tube extending into the circular drainage disk, a trumpet-shaped female interface is provided on the hose connector, a sealing head is provided at one end of the negative pressure drainer, the sealing head is inserted into the trumpet-shaped female interface, and is sealed and detachably connected to the trumpet-shaped female interface.

[0031] Furthermore, a power supply and a buzzer are provided in the circular drainage plate;

[0032] The negative pressure indicator is provided with a pointer touch switch, which is used to drive the retracting assembly to start or stop; the pointer touch switch is electrically connected to the buzzer and the retracting assembly in sequence;

[0033] The power supply is electrically connected to the negative pressure indicator;

[0034] The negative pressure indicator is provided with a first set negative pressure value P1 and a second set negative pressure value P2;

[0035] When the pointer triggers the switch to rotate to the first set negative pressure value P1, the power supply can drive the buzzer to send out an alarm signal, and the retracting assembly starts;

[0036] When the pointer triggers the switch to rotate to the second set negative pressure value P2, the reeling assembly stops.

[0037] The present invention provides a superficial tissue defect drainage device, which has the following beneficial effects:

[0038] 1. The device is connected to the reel assembly through a negative pressure indicator, which can drive the piston assembly to move and is used to adjust the negative pressure. It is easy and fast to use, and has high safety. When in use, the drainage tube is left under the patient's skin, and the negative pressure drainage device is kept to continuously drain the wound under negative pressure to avoid fluid and pus accumulation, keep the wound clean and dry, promote the rapid growth of wound tissue, promote wound healing, and achieve rapid recovery; the device is easy to carry and does not affect any activities of the patient; it can also avoid secondary infection of the wound, increase and aggravate the pain of the patient's dressing change; it can also shorten the treatment time and reduce the treatment cost.

[0039] 2. The device stores the negative pressure drainage device in a circular drainage tray, which is easy to carry and has a low cost. It is used for large subcutaneous tissue defect wounds that can be sutured and sealed. It can achieve continuous negative pressure drainage, and when the pressure drops to the lower limit of negative pressure, it alarms and automatically increases the negative pressure to the set upper limit. It is low in cost, easy to use, and easy to carry. Patients and their families can easily learn and master the operation process and nursing elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The figure is a schematic structural diagram of a superficial tissue defect drainage device according to one embodiment of the present invention.

[0041] Figure 2 It is a schematic cross-sectional view of a superficial tissue defect drainage device according to one embodiment of the present invention.

[0042] Figure 3 for Figure 2 Schematic diagram of the structure of part A.

[0043] Figure 4 for Figure 2 Assembly diagram of the piston assembly.

[0044] Figure 5 Schematic diagram of the structure of a spherical clamping portion in one embodiment of the present invention.

[0045] Figure 6 This is a working principle diagram of a superficial tissue defect drainage device according to one embodiment of the present invention.

[0046] Figure 7 This is a circuit schematic diagram of a superficial tissue defect drainage device according to one embodiment of the present invention.

[0047] In the figure, 1, drainage tube; 11, first drainage tube; 111, side hole; 12, second drainage tube; 121, butterfly adhesive cloth; 2, circular drainage plate; 21, matching opening; 22, connecting tube; 221, hose connector; 222, trumpet-shaped female interface; 23, suspension assembly; 24, first accommodating chamber; 25, second accommodating chamber; 26, spherical clamping part; 261, limiting circular hole; 3, negative pressure drainer; 31, sealing head; 4, piston assembly Parts; 41, piston; 411, circular groove; 412, stud; 413, through hole; 42, arc-shaped push rod; 421, circular convex; 422, nut; 5, winding assembly; 51, rope winder; 52, transmission shaft; 53, motor; 6, traction rope; 61, hook; 62, limit ring; 7, negative pressure indicator; 71, pointer touch switch; first set negative pressure value P1; second set negative pressure value P2; 8, power supply; 9, buzzer. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0050] See also Figure 1 , which is a structural schematic diagram of a superficial tissue defect drainage device provided in one embodiment of the present invention. The device mainly includes a drainage tube 1 and a negative pressure drainage device, wherein the negative pressure drainage device includes a circular drainage disk 2, a negative pressure drainer 3, a piston assembly 4 and a reeling assembly 5.

[0051] A mating opening 21 is provided on one side of the circular drainage disk 2, and a connecting tube 22 is provided on the other side; the mating opening 21 allows the negative pressure drain device 3 to be conveniently received in the circular drainage disk 2, which not only provides good protection for the negative pressure drain device 3 but is also easy to carry and does not affect any activities of the patient.

[0052] See also Figure 1 to Figure 2 A porous filter joint is provided on one end of the connecting tube extending into the circular drainage disk 2, and a negative pressure indicator 7 is connected to the porous filter joint. Specifically, the circular drainage disk 2 is divided into a first accommodating chamber 24 and a second accommodating chamber 25; for example, the circular drainage disk 2 is divided into the first accommodating chamber 24 and the second accommodating chamber 25 by an arc-shaped partition layer.

[0053] The first accommodating cavity 24 is arranged at one side close to the mating opening 21 for accommodating the negative pressure drainer 3 ; a spherical clamping portion 26 is arranged at one end of the first accommodating cavity 24 , and one end of the negative pressure drainer 3 abuts against the spherical clamping portion 26 .

[0054] A hose connector 221 is provided at the other end of the first accommodating chamber; a hose connector 221 is provided at one end of the connecting tube 22 extending into the circular drainage disk 2, and a trumpet-shaped female interface 222 is provided on the hose connector 221, and a sealing head 31 is provided at one end of the negative pressure drain 3, and the sealing head 31 is inserted into the trumpet-shaped female interface 222, and is sealed and detachably connected to the trumpet-shaped female interface 222. For example, the hose connector is a movable hose connector, which can be lifted upwards to facilitate connection with the negative pressure drain 3; its material is a soft PVC tube, and the inner diameter of the soft PVC tube is about 30mm and the length is about 30mm. And at the end of the soft PVC tube, there is a trumpet-shaped female interface, because the inner side of the trumpet-shaped female interface is provided with an internal thread, and the outer side of the sealing head is provided with an external thread. In this way, the sealing head of the negative pressure drain is threadedly connected to the trumpet-shaped female interface of the hose connector, and a good seal can be achieved. For example, there is a silicone gasket in the trumpet-shaped female interface, and a circle of silicone sealing ring is also provided on the outer wall of the sealing head. Inserting the sealing head with the silicone sealing ring into the hose connector not only facilitates disassembly and installation, but also achieves good sealing, making the connection firm and sealed.

[0055] A porous filter joint is connected to the hose joint where the connecting pipe just enters the circular drainage disk, and the negative pressure indicator 7 is sealed and detachably connected to the porous filter joint. For example, the negative pressure indicator 7 is a pressure gauge, and the gauge head connection end of the pressure gauge is screwed to the porous filter joint, and a rubber gasket is used to achieve sealing at the connection.

[0056] The second accommodating chamber 25 is arranged on one side close to the connecting tube 22, and is used to accommodate the negative pressure indicator 7 and the retracting assembly 5; the buzzer and the power supply are also arranged in the second accommodating chamber. The second accommodating chamber is mainly used to install electronic components, which can protect the electronic components and can be separated from the negative pressure drain in the first accommodating chamber.

[0057] See also Figures 2 to 3 The negative pressure drainer 3 is detachably arranged in the matching opening 21 of the circular drain plate 2; for example, the negative pressure drainer is an arc-shaped syringe with a scale marked on its outer wall and a capacity of 100 mL. One end of the negative pressure drainer is clamped on the spherical clamping part, and the other end is sealed and detachably connected to the hose connector, thereby achieving stable installation of the negative pressure drainer.

[0058] Of course, a number of clamping columns can also be set on the side wall of the negative pressure drainer, and a number of clamping grooves are set on both sides of the matching opening of the circular drainage disk, and each clamping column is clamped in the corresponding clamping groove. For example, there are two clamping columns with a width of 2mm and a thickness of 1mm above the negative pressure drainer, and they are located at the point where the negative pressure drainer is divided into three equal parts; the clamping grooves and clamping columns of the matching opening are clamped to each other to fix the negative pressure drainer, thereby further improving the installation stability of the negative pressure drainer, so that the negative pressure drainer can be stably installed in the circular drainage disk to avoid tissue fluid leakage or pressure relief caused by shaking.

[0059] One end of the connecting tube 22 is detachably connected to the drainage tube 1, and the other end is detachably connected to the negative pressure drainer 3; for example, the connecting tube 22 is a hard PVC tube with a length of about 15 mm and an inner diameter of about 5 mm, and its connection with the circular drainage plate is integrally connected.

[0060] A built-in clamping washer is provided on one end of the connecting tube 22, and a movable nut is sleeved on the connecting tube 22, and the movable nut can move forward and backward along the connecting tube. Specifically, the outer diameter of the clamping washer is smaller than the inner diameter of the movable nut, and larger than the inner diameter of the sleeve opening of the movable nut and the connecting tube, so that the clamping washer can limit the movable nut when it is accommodated in the movable nut, so as to prevent the movable nut from being separated from the connecting tube during the movement.

[0061] An external threaded tube is arranged on the outer wall of one end of the drainage tube 1, and a movable nut is threadedly connected with the external threaded tube. A silicone pad is arranged on the contact surface between the movable nut and the threaded tube, and the silicone pad is arranged on the clamping gasket. The movable nut is screwed on the external threaded tube, which can not only make the drainage tube and the connecting tube tightly connected, but also have good airtightness. At this time, the distance between the movable nut and the circular drainage plate is about 1 cm, which can also be set according to actual needs.

[0062] See also Figure 3 to Figure 4 , the piston assembly 4 is movably arranged in the negative pressure drainer 3; in this embodiment, the negative pressure drainer is an arc-shaped syringe, in which an arc-shaped piston assembly is arranged. That is, the shapes of the negative pressure drainer 3 and the piston assembly 4 are both arc-shaped, and their shapes match. The piston assembly can be pulled along the inner wall of the negative pressure drainer by a traction rope, so as to facilitate the adjustment of the negative pressure state.

[0063] Specifically, the piston assembly 4 includes a piston 41 and an arc-shaped push rod 42, one end of the arc-shaped push rod 42 is threadedly connected to the piston 41; the traction rope 6 passes through the arc-shaped push rod 42 and is detachably connected to the piston 41. For example, the thickness of the piston is about 5 mm, and it is placed in the negative pressure drainer. One side of the piston 41 is provided with a circular groove 411 with a distance of 3 mm from the edge, a width of 2 mm, and a depth of 3 mm. One side of the arc-shaped push rod 42 is provided with a circular convex 421 with a width of 2 mm and a height of 3 mm. The circular convex 421 is threadedly connected to the circular groove 411;

[0064] A stud 412 with a diameter of 5 mm and a length of 5 mm is disposed on the inner side of the circular groove 411; a nut 422 with a diameter of 5 mm and a length of 2 to 3 mm is disposed on the inner side of the circular protrusion 421, and the stud 412 is inserted into the nut 422 and is threadedly connected with the nut 422;

[0065] A through hole 413 is provided on one end of the stud 412 extending to the arc-shaped push rod 42. The through hole 413 is 2 mm away from the end of the stud 412, and the inner diameter of the through hole 413 is 2 mm. A hook 61 is provided on one end of the traction rope 6, and the hook 61 is hung on the through hole 413. The piston 41 and the arc-shaped push rod 42 are stably connected, so that after the negative pressure drain device 3 is removed, the piston assembly 4 can be pushed and pulled to achieve the purpose of cleaning.

[0066] See also Figure 3 and Figure 5 A limiting circular hole 261 is provided on the spherical clamping part 26, one end of the traction rope 6 passes through the limiting circular hole 261 and is connected to a limiting circular ring 62, the size of the limiting circular ring 62 is larger than the size of the limiting circular hole 261, and the limiting circular ring 62 is detachably connected to the piston assembly 4. In this embodiment, the traction rope is a stainless steel wire rope, and a limiting circular ring 62 and a hook 61 are provided at its end for connecting the piston assembly. Since the size of the limiting circular ring is larger than the size of the limiting circular hole, the limiting circular ring is always retained on the spherical clamping part, which facilitates the disassembly and installation of the piston assembly 4 and the traction rope 6 on the negative pressure drain 3.

[0067] See also Figure 3 The reeling assembly 5 is arranged in the circular drainage disk 2, and the reeling assembly 5 is connected to the piston assembly 4 through the traction rope 6, and is used to pull the piston assembly 4 to move. Here, the piston assembly needs to form a seal with the negative pressure drainer on the one hand, and needs to be able to move along the inner wall of the negative pressure drainer on the other hand. The purpose of setting the reeling assembly is to facilitate the automatic traction of the piston assembly to move along the inner wall of the negative pressure drainer, which is convenient and quick to use. Specifically, the reeling assembly 5 includes a rope reel 51, a transmission shaft 52 and a motor 53.

[0068] The rope reel 51 is connected to one end of the traction rope 6 and is used to reel in the traction rope 6 ; the traction rope is wound around the rope reel.

[0069] One end of the transmission shaft 52 passes through the rope reel 51 and is detachably connected to the rope reel 51; for example, both ends of the transmission shaft 52 are rotatably mounted on one side of the circular drainage plate 2 close to the spherical clamping portion 26 through a connecting rod.

[0070] The motor 53 is detachably connected to one end of the transmission shaft 52; the motor 53 can drive the rope reel 51 to rotate. For example, the motor 53 is a micro motor with a low noise function, and its working pressure is 5 to 24V. The rope reel can be driven to rotate by starting the motor. Here, the two ends of the rope reel are rotatably mounted on one side of the circular drainage disk close to the end of the negative pressure drainer, so as to facilitate the winding of the traction rope. The output shaft of the motor can be connected to the rope reel through a transmission belt, or through a reducer, or directly connected to the rotating shaft of the rope reel. The rotating shaft of the rope reel is driven to rotate by the rotation of the output shaft of the motor, so as to facilitate the storage of the traction rope and keep a suitable pulling force on the piston assembly. When in use, the transmission shaft is driven to rotate by the motor, and then the rope reel is driven to rotate, so that the winding of the traction rope can be realized and the traction movement of the piston assembly can be realized.

[0071] See also Figure 1 to Figure 2 The drainage tube 1 includes a first drainage tube 11 and a second drainage tube 12 .

[0072] The first drainage tube 11 is mainly placed under the superficial layer of the wound cavity, and a plurality of side holes 111 are evenly distributed on the side wall thereof and arranged in a spiral shape;

[0073] One end of the second drainage tube 12 is threadedly sealed with the connecting tube 22, and the other end is provided with a butterfly adhesive cloth 121; the distance between the butterfly adhesive cloth 121 and the adjacent side hole is 10-20 mm; the second drainage tube 12 and the first drainage tube 11 are integrally formed and connected to each other.

[0074] In the present embodiment, the drainage tube is a silicone tube with a total length of about 40 cm. The length of the first drainage tube is 25 cm, and starting from the head end, there is a side hole of about 3 mm every 15 mm, arranged in a spiral shape, and placed in the wound cavity. Of course, in other embodiments, the side hole silicone tube can also be self-guided according to the size of the cavity. The last side hole of the silicone tube in the wound cavity is located 1-2 cm from the subcutaneous tissue to ensure the airtightness of the wound cavity after suturing the skin and subcutaneous tissue. The silicone tube is fixed to the skin with a butterfly-shaped high-viscosity anti-allergic tape as soon as it leaves the skin to prevent the silicone tube from escaping from the wound cavity.

[0075] Leaving the drainage device in place causes no major trauma to the patient, and the skin only needs to be sutured once. The drainage device is maintained for continuous negative pressure drainage. When the negative pressure is less than 30 mmHg, the drainage device will issue an alarm and automatically increase the negative pressure to 80-90 mmHg to avoid fluid and pus accumulation in the wound, keep the wound clean and dry, promote rapid growth of wound tissue, promote wound healing, and achieve rapid recovery.

[0076] The device is used for larger subcutaneous tissue defect wounds where the skin can be sutured and sealed. It can achieve continuous negative pressure drainage, and when the pressure drops to the lower limit of negative pressure, it will alarm and automatically increase the negative pressure to the set upper limit. It is also low-cost, easy to carry, and patients and their families can easily learn and master the operating procedures and nursing elements. It is easy and safe to use.

[0077] A hanging component 23 is provided on the side wall of the circular drainage disk 2 for external hanging; the hanging component 23 is provided on the side of the circular drainage disk 2 close to the reeling component 5. For example, the hanging component can be a pin, a hanging ring, or a buckle. By hanging the hanging component outside the body, it is convenient for the patient to carry and does not affect any activities of the patient. After hanging, the hanging component 23 is in the highest position of the device, so that the motor 53 is in the highest position to avoid blockage caused by drainage in the negative pressure drainer 3.

[0078] See also Figure 6 to Figure 7 The negative pressure indicator 7 is arranged at one end of the connecting tube 22 near the negative pressure drainer 3; it is used to detect the pressure of the connecting tube 22, and a plurality of scale lines are arranged on the negative pressure indicator 7, such as 0mmHg, 30mmHg, 60mmHg, 90mmHg, 100mmHg, etc. A porous filter is arranged on the inner side of the connecting tube, and the negative pressure indicator 7 is arranged on one side of the porous filter to prevent solid matter in the drainage fluid from clogging the negative pressure indicator.

[0079] A power supply 8 and a buzzer 9 are arranged in the circular drainage plate 2; of course, the power supply is also connected to a control switch, and the connection and closing of the working circuit of the entire electronic component are controlled by the control switch.

[0080] A pointer touch switch 71 is provided in the negative pressure indicator 7; it is used to drive the reeling assembly to start or stop; the pointer touch switch 71 is electrically connected to the buzzer 9 and the reeling assembly 5 in sequence; the power supply 8 is electrically connected to the negative pressure indicator 7; the negative pressure indicator 7 is provided with a first set negative pressure value P1 and a second set negative pressure value P2; for example, the first set negative pressure value P1 is 30 mmHg, and the second set negative pressure value P2 is 80 mmHg, 90 mmHg or 100 mmHg; of course, the first set negative pressure value P1 and the second set negative pressure value P2 can be adjusted according to actual use. When the pointer touch switch 71 rotates to the first set negative pressure value P1, the power supply 8 can drive the buzzer 9 to send out an alarm signal, and the reeling assembly 5 starts; when the pointer touch switch 71 rotates to the second set negative pressure value P2, the reeling assembly 5 stops.

[0081] During use, when the pointer triggers the switch 71 to rotate to the first set negative pressure value P1, the circuit is connected, the buzzer sounds a warning, and at the same time, the motor of the reel assembly is connected to the power supply, driving the rope reel to rotate, winding the traction rope, and then pulling the piston assembly toward the end away from the connecting tube 22. Since the negative pressure indicator in the device shows that the negative pressure value is too low and continuous drainage cannot be guaranteed, it is necessary to start the reel assembly and drive the piston assembly to move toward the end away from the connecting tube through the traction rope, so that the drainage device is in a negative pressure state, which is convenient for continuous drainage.

[0082] When the pointer of the negative pressure indicator triggers the switch to rotate to the second set negative pressure value P2, the circuit is disconnected, the motor of the reel assembly 5 stops running, and the piston assembly stops moving. Since the negative pressure indicator in the device shows a high pressure value, which is sufficient to ensure continuous drainage, the reel assembly can be stopped and the piston assembly can also stop moving.

[0083] This repetition can ensure the continuous drainage of the device, avoid the accumulation of fluid and pus in the wound, keep the wound clean and dry, promote the rapid growth of wound tissue, promote wound healing, and achieve rapid recovery. It also avoids secondary infection of the wound, which increases and aggravates the pain of dressing changes for patients; using this device for drainage can shorten the treatment time and reduce treatment costs.

[0084] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A superficial tissue defect drainage device, comprising a drainage tube (1) and a negative pressure drainage device, characterized in that: The negative pressure drainage device comprises: A circular drainage disk (2) is provided with a mating opening (21) on one side and a connecting tube (22) on the other side; a porous filter joint is provided on one end of the connecting tube extending into the circular drainage disk (2), and a negative pressure indicator (7) is connected to the porous filter joint; the circular drainage disk (2) is divided into a first accommodating chamber (24) and a second accommodating chamber (25) by an arc-shaped partition layer in the circular drainage disk (2); the first accommodating chamber (24) is provided on a side close to the mating opening (21); A negative pressure drainer (3) is detachably arranged in the first accommodating cavity (24) in the mating opening (21) of the circular drain plate (2); one end of the connecting tube (22) is detachably connected to the drainage tube (1), and the other end is detachably connected to the negative pressure drainer (3); A piston assembly (4) is movably disposed in the negative pressure drain device (3); and A reeling assembly (5) is arranged in the circular drainage disc (2); the reeling assembly (5) is connected to the piston assembly (4) via a traction rope (6) and is used to traction the piston assembly (4) to move; The negative pressure drain device (3) and the piston assembly (4) are both arc-shaped, and their shapes match each other; The piston assembly (4) comprises a piston (41) and an arc-shaped push rod (42), one end of the arc-shaped push rod (42) being threadedly connected to the piston (41); the traction rope (6) passes through the arc-shaped push rod (42) and is detachably connected to the piston (41).

2. The superficial tissue defect drainage device according to claim 1, characterized in that: A circular groove (411) is provided on one side of the piston (41), a circular convex portion (421) is provided on one side of the arc-shaped push rod (42), and the circular convex portion (421) is threadedly connected to the circular groove (411); A stud (412) is disposed on the inner side of the circular groove (411); a nut (422) is disposed on the inner side of the circular protrusion (421), and the stud (412) is inserted into the nut (422) and is threadedly connected to the nut (422); A through hole (413) is provided on one end of the stud (412) extending to the arc-shaped push rod (42), and a hook (61) is provided on one end of the traction rope (6), and the hook (61) is hung on the through hole (413).

3. The superficial tissue defect drainage device according to claim 1, characterized in that: The reeling assembly (5) comprises: A rope reel (51), connected to one end of the traction rope (6) and used for reeling in the traction rope (6); A transmission shaft (52), one end of which passes through the rope reel (51) and is detachably connected to the rope reel (51); A motor (53) is detachably connected to one end of the transmission shaft (52); the motor (53) can drive the rope reel (51) to rotate.

4. The superficial tissue defect drainage device according to claim 1, characterized in that: The second accommodating chamber (25) is arranged on a side close to the connecting pipe (22) and is used to accommodate the negative pressure indicator (7) and the reeling assembly (5); A spherical clamping portion (26) is provided at one end of the first accommodating chamber (24), and one end of the negative pressure drainer (3) abuts against the spherical clamping portion (26).

5. The superficial tissue defect drainage device according to claim 4, characterized in that: A limiting circular hole (261) is provided on the spherical clamping portion (26), one end of the traction rope (6) passes through the limiting circular hole (261) and is connected to a limiting circular ring (62), the size of the limiting circular ring (62) is larger than the size of the limiting circular hole (261), and the limiting circular ring (62) is detachably connected to the piston assembly (4).

6. The superficial tissue defect drainage device according to claim 1, characterized in that: The drainage tube (1) comprises: A first drainage tube (11) has a plurality of side holes (111) evenly distributed on its side wall and arranged in a spiral shape; The second drainage tube (12) has one end threadedly sealed with the connecting tube (22) and the other end is provided with a butterfly-shaped adhesive cloth (121); the distance between the butterfly-shaped adhesive cloth (121) and the adjacent side hole is 10 to 20 mm; the second drainage tube (12) and the first drainage tube (11) are integrally molded and connected to each other.

7. The superficial tissue defect drainage device according to claim 1, characterized in that: A suspension component (23) is provided on the side wall of the circular drainage disc (2) for external suspension; the suspension component (23) is provided on a side of the circular drainage disc (2) close to the reeling component (5).

8. The superficial tissue defect drainage device according to claim 1, characterized in that: A hose connector (221) is provided on one end of the connecting tube (22) extending into the circular drainage disk (2), and a trumpet-shaped female interface (222) is provided on the hose connector (221). A sealing head (31) is provided on one end of the negative pressure drainer (3), and the sealing head (31) is inserted into the trumpet-shaped female interface (222) and is sealed and detachably connected to the trumpet-shaped female interface (222).

9. The superficial tissue defect drainage device according to claim 1, characterized in that: The circular drainage disc (2) is provided with a power supply (8) and a buzzer (9); The negative pressure indicator (7) is provided with a pointer touch switch (71) for driving the reeling assembly to start or stop; the pointer touch switch (71) is electrically connected to the buzzer (9) and the reeling assembly (5) in sequence; The power supply (8) is electrically connected to the negative pressure indicator (7); The negative pressure indicator (7) is provided with a first set negative pressure value P1 and a second set negative pressure value P2; When the pointer-touch switch (71) rotates to the first set negative pressure value P1, the power supply (8) can drive the buzzer (9) to send out an alarm signal, and the retracting component (5) starts; When the pointer-touch switch (71) rotates to the second set negative pressure value P2, the reeling assembly (5) stops.

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