Subcutaneous effusion drainage device used after breast surgery

Abstract

The invention discloses a postoperative subcutaneous effusion drainage device for breast surgery, relates to the technical field of medical instruments, and particularly aims to solve the problems that in the prior art, a large-size postoperative subcutaneous effusion drainage device for breast surgery is very inconvenient to use, occupies a large space and is inconvenient to use. The postoperative subcutaneous effusion drainage device solves the problems that in the prior art, a patient easily fights for space with other treatment equipment used by the patient during the operation, and postoperative treatment and rehabilitation of the patient are not facilitated, and comprises a collection box, the lower end of the collection box is communicated with a drainage tube, and a suction device is arranged on a tube body of the drainage tube; a suction head is arranged at the lower end of the drainage tube, a fixing mechanism is arranged at the end of the suction head, and an anti-backflow mechanism is further arranged in the drainage tube, so that the drainage device is rapidly and conveniently fixed to the subcutaneous part of a patient, the hydrops can be rapidly and accurately drained, and the pain of the patient is relieved in time.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a subcutaneous fluid drainage device after breast surgery. Background Art

[0002] Subcutaneous effusion after breast cancer surgery is a common complication that increases the patient's treatment time, prolongs the hospital stay, and may cause serious problems such as infection and skin flap necrosis. Effective drainage devices can be used to remove effusion in a timely manner, reduce the incidence of these complications, and improve the patient's postoperative recovery quality. There are several benefits: Promote wound healing: Subcutaneous fluid accumulation will affect the wound healing process, causing the flap to separate from the chest wall, hindering the establishment of capillaries, and increasing the risk of infection. Using advanced drainage devices such as negative pressure closed drainage technology (VAC) can effectively promote the growth of fresh granulation tissue and accelerate wound healing.

[0003] Shorten treatment time: Studies have shown that the average healing time of patients with severe subcutaneous effusion treated with negative pressure closed drainage technology (VAC) is significantly shorter than that of traditional drainage methods. This not only reduces the patient's hospitalization time, but also reduces medical expenses and alleviates the patient's psychological burden.

[0004] Improve the quality of life: Subcutaneous effusion after breast cancer surgery not only affects the patient's physical health, but also increases the patient's psychological burden. Through effective drainage devices, the impact of effusion on the patient's daily life can be reduced and the patient's quality of life can be improved.

[0005] Reduce economic burden: The treatment of subcutaneous effusion after breast cancer surgery requires multiple interventions, such as repeated aspiration or relocation of drainage tubes, which can easily cause infection and increase the patient's pain. The use of efficient drainage devices can reduce these unnecessary interventions and reduce the overall treatment costs.

[0006] The patent document with publication number CN221751667U discloses a postoperative subcutaneous fluid drainage device for breast surgery, comprising a fluid collection box, a drainage tube is detachably connected to the top of the fluid collection box, a drainage needle is fixedly connected to one end of the drainage tube away from the fluid collection box, a clip is fixedly connected to the outer wall of the drainage needle, a fixing seat is attached to the outer wall of the drainage needle, a pressure-sensitive adhesive tape is fixedly connected to the bottom of the fixing seat, a groove is provided on the inner wall of the fixing seat, a threaded column is threadedly connected to the top of the fixing seat, and a fixing plate is rotatably connected to the bottom of the threaded column; During use, the medical staff mounts the fluid accumulation box on the top of the limit block through the clamping block, places the drainage needle inside the groove, and uses pressure-sensitive tape to fix the fixing seat and the patient. After the fixation is completed, the medical staff uses the drainage needle to puncture and drain the fluid accumulation. After the puncture is completed, the two threaded columns are rotated. During the rotation process, the two fixing plates squeeze the two clips, so that the two clips fit tightly against the inner wall of the fixing seat, thereby fixing the drainage needle, avoiding frequent tearing of the pressure-sensitive tape when multiple punctures are required, thereby avoiding damage to the patient's skin during the tearing process.

[0007] However, the above-mentioned breast surgery postoperative subcutaneous fluid drainage device is large in size. When in use, it is placed on the ground and needs to be moved back and forth near the patient to perform drainage operations on the patient. This large drainage device occupies a large space and is very inconvenient to use. It competes for space with other instruments used by the patient, which is not conducive to postoperative treatment and rehabilitation of the patient. In addition, the large drainage device is very inconvenient when it needs to be moved, and the use effect is not good.

[0008] Therefore, it is urgent to design a subcutaneous fluid drainage device after breast surgery to solve the above problems. Summary of the invention

[0009] In view of the problem that the drainage device for subcutaneous fluid accumulation after breast surgery, which is relatively large in size and occupies a large space, is inconvenient to use and is not conducive to postoperative treatment and rehabilitation of patients, the present invention aims to provide a drainage device for subcutaneous fluid accumulation after breast surgery, including a collection box, a drainage tube connected to the lower end of the collection box, a suction device for negative pressure suction arranged on the body of the drainage tube, a suction head arranged at the lower end of the drainage tube, and a fixing mechanism for fixing the suction head under the patient's skin arranged at the end of the suction head, an anti-backflow mechanism arranged in the drainage tube, and a power suction device for increasing the suction force of the suction device; The postoperative subcutaneous fluid drainage device for breast surgery of the present invention can be fixed more firmly under the patient's skin, and its insertion position will not be affected by a small swing of the drainage device, thereby affecting the suction of the accumulated fluid. At the same time, the drainage device of the present invention is small in size, and the drainage operation of the accumulated fluid can be completed by hand-holding during suction, and the drainage point can be conveniently changed to suction multiple locations of the accumulated fluid in the patient's body.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A postoperative subcutaneous fluid drainage device for breast surgery comprises a collection box, the lower end of the collection box is connected to a drainage tube, a suction device for negative pressure suction is arranged on the body of the drainage tube, and a suction head is arranged at the lower end of the drainage tube. A fixing mechanism for fixing the suction head under the patient's skin is arranged at the end of the suction head, and an anti-backflow mechanism is arranged in the drainage tube to prevent the accumulated fluid in the drainage tube from backflowing.

[0011] Preferably, the fixing mechanism comprises: The conical rubber disc is sleeved on the end of the drainage tube and is used in conjunction with the suction head and the support frame; The support frame is arranged in the conical rubber disc and connected to the drainage tube, and extends out of the conical rubber disc and connected to the moving component; The movable assembly is movably mounted on the drainage tube and is used to drive the support frame to cooperate with the conical rubber disc to fix the suction head under the patient's skin.

[0012] Preferably, the support frame comprises: A flexible support rod, the end of which is rotatably arranged on the drainage tube; The two ends of the rotating support rod are respectively connected to the flexible support rod and the J-shaped pull rod; The J-shaped pull rod passes through the moving assembly and is used in conjunction with the moving assembly.

[0013] Preferably, the moving assembly comprises: A movable ring is movably sleeved on the drainage tube, and a positioning tooth block is movably arranged inside the movable ring; The rack is arranged on the outer wall of the drainage tube and is used in conjunction with the positioning tooth block to realize the positioning of the support frame.

[0014] Preferably, the backflow prevention mechanism comprises: A plurality of splicing plates, the bottom of which is rotatably arranged on the inner wall of the drainage tube, and the plurality of splicing plates are used in conjunction with the suction device to prevent the liquid flowing into the drainage tube from flowing back; The elastic support component is obliquely arranged between the splicing plate and the drainage pipe, and is used to support and cooperate with the opening and closing of the splicing plate.

[0015] Preferably, the elastic support assembly comprises: The upper end of the plug rod is connected to the splicing plate, and the lower end is set in the sleeve rod through a spring; A sleeve rod, the bottom of which is connected to the inner wall of the drainage tube; The damping plate is arranged at the bottom end of the insertion rod and is used in conjunction with the inner wall of the sleeve rod. At the same time, the damping plate is connected to the spring.

[0016] Preferably, the liquid inlet of the collection box is provided with a liquid inlet nozzle, the diameter of the lower end of the liquid inlet nozzle is larger than the diameter of the upper end, and a backflow component is provided inside the lower end of the liquid inlet nozzle to prevent the liquid entering the collection box from flowing out.

[0017] Preferably, the reverse flow assembly comprises: A baffle, arranged at the lower end of the liquid inlet nozzle, used to block the liquid inlet of the collection box; A plurality of springs 2, one end of which is connected to the baffle plate and the other end of which is connected to the inner wall of the liquid inlet nozzle, are used to cooperate with the baffle plate to allow the liquid in the drainage tube to smoothly enter the collection box and prevent backflow.

[0018] The beneficial effects of the present invention are as follows: the present invention discloses a device for draining subcutaneous fluid after breast surgery. Compared with the prior art, the present invention has the following improvements: (1) The present invention solves the problem of fixing the suction head to the patient's subcutaneous tissue through the design of the fixing mechanism, and realizes the fast and convenient fixing of the suction head to the patient's subcutaneous tissue, thereby enabling the drainage device to quickly and accurately drain the effusion and timely relieve the patient's pain; Furthermore, the fixing mechanism cooperates with the conical rubber disc and the support frame to clamp the patient's skin from the inside and outside. At the same time, the conical rubber disc is also sucked on the outside of the skin, further enhancing the fixing effect of the fixing mechanism and the skin, and quickly fixing the suction head under the patient's skin to facilitate accurate and rapid drainage. The support frame is used in conjunction with the moving component, and the support frame can be quickly and conveniently unfolded or stored, which is convenient for cooperating with the conical rubber disc to clamp the patient's skin from the inside and outside, thereby fixing the suction head under the patient's skin and protecting the suction head when it is not necessary.

[0019] (2) The present invention solves the problem of draining the accumulated fluid in the drainage tube by designing an anti-backflow mechanism, and achieves the effect of preventing the backflow of the accumulated fluid that enters the drainage tube through the suction head, so that the accumulated fluid that enters the drainage tube can only flow into the collection box along the drainage tube, thereby successfully draining the accumulated fluid out of the patient's body.

[0020] (3) The present invention solves the problem of the accumulated liquid in the collection box flowing out of the collection box through the design of the backflow component, thereby preventing the accumulated liquid in the collection box from flowing back out, thereby avoiding the outflow of the liquid in the collection box due to the movement of the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front structural diagram of the drainage device of the present invention; Figure 2 It is a side structural diagram of the drainage device of the present invention; Figure 3 This is a rear structural diagram of the drainage device of the present invention; Figure 4 This is a bottom view of the drainage device of the present invention; Figure 5 This is the overall structural diagram of the drainage device of the present invention; Figure 6 The fixing mechanism structure of the present invention is shown in FIG. Figure 1 ; Figure 7 The fixing mechanism structure of the present invention is shown in FIG. Figure 2; Figure 8 This is a schematic diagram of the structure of the mobile ring of the present invention; Fig. 9 This is an enlarged view of part A of the present invention; Fig.10 The use state of the fixing mechanism structure of the present invention Figure 1 ; Fig.11 The use state of the fixing mechanism structure of the present invention Figure 2 ; Fig.12 is a cross-sectional view of the drainage tube of the present invention; Fig.13 It is a schematic diagram of the structure of the anti-backflow mechanism of the present invention; Fig.14 This is an enlarged view of part B of the present invention; Fig.15 It is a cross-sectional view of the collecting box of the present invention; Fig.16 This is an enlarged view of part C of the present invention; Among them: 1. Collection box; 2. Drainage tube; 3. Suction device; 4. Suction head; 401. Water permeable port; 5. Fixing mechanism; 501. Conical rubber disc; 502. Support frame; 502-1. Flexible support rod; 502-2. Rotating support rod; 502-3. J-type pull rod; 503. Moving assembly; 503-1. Moving ring; 503-1A. Positioning gear block; 503-2. Rack; 6. Anti-backflow mechanism; 601. Splicing plate; 602. Elastic support assembly; 602-1. Insert rod; 602-2. Sleeve rod; 602-3. Spring one; 602-4. Damping plate; 7. Backflow assembly; 701. Baffle; 702. Spring two. DETAILED DESCRIPTION

[0022] In order to enable ordinary technicians in the field to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to The present invention is described but not intended to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment 1: Refer to the attached Figure 1-11 The device for drainage of subcutaneous fluid accumulation after breast surgery shown in the figure comprises a collection box 1, the lower end of the collection box 1 is connected to a drainage tube 2, a suction device 3 for negative pressure suction is arranged on the body of the drainage tube 2, a suction head 4 is arranged at the lower end of the drainage tube 2, and a fixing mechanism 5 for fixing the suction head 4 under the patient's skin is arranged at the end of the suction head 4, and an anti-backflow mechanism 6 is arranged in the drainage tube 2; In this embodiment, the volume of the collection box 1 is 300-500 ml, the diameter of the drainage tube 2 is 0.5-1.5 cm, and the suction device 3 is a micro structure; the end of the suction head 4 is a conical structure, and this structural design facilitates the maximum contact area between the suction head 4 and the effusion, ensuring a large one-time suction volume. In the case of a large amount of effusion, suction can be performed quickly to avoid long-term accumulation of effusion and cause harm to the patient; the suction device 3 is a micro negative pressure suction pump; The drainage tube 2 is composed of two parts for easy use. The upper part is a rigid end for fixing the suction device 3, and the lower part is a flexible end. Preferably, the upper part can be made of polypropylene, polyethylene, etc., and the lower part can be made of a threaded tube made of rubber or silicone, which is convenient for extension and bending according to needs; the suction head 4 is a conical structure, and its material is also selected from silicone or rubber. While it can be sterilized, it can protect the patient's wound because it is flexible to avoid damaging the patient's wound during the suction process, and a water permeable port 401 is provided on the suction head 4 to facilitate the effusion to enter the drainage tube 2 from the suction head 4; The fixing mechanism 5 fixes the suction head 4 on the patient, and turning on the suction device 3 can generate negative pressure in the drainage tube 2, so that the accumulated fluid is sucked into the drainage tube 2 from the suction head 4, and then flows into the collection box 1 from the drainage tube 2, and the collection box 1 is detachably connected to the drainage tube 2. After the drainage is completed, the collection box 1 can be removed to clean the accumulated fluid therein, so as to facilitate the next use; wherein, the counterflow mechanism 6 can ensure that during the drainage process, the accumulated fluid in the drainage tube 2 will not flow back due to external factors, and it will only flow into the collection box 1 along the drainage tube 2; Considering that the drainage device of this embodiment needs to keep the suction head 4 inserted into the patient's body for a long time during drainage to drain the body by squeezing, it is obviously unrealistic to fix it manually for a long time, and fixing it with a fixing tape is not suitable for fixing the suction head. Therefore, a fixing mechanism 5 that can be used in conjunction with the suction head 4 is provided in this embodiment, so that the suction head 4 can be quickly and conveniently fixed on the patient, and when not in use, the suction head 4 can be protected to avoid damage and contamination; Specific reference attached Figure 5-11 As shown, the fixing mechanism 5 includes a conical rubber disc 501, a support frame 502 and a moving assembly 503, and the connection relationship thereof is specifically as follows: the conical rubber disc 501 is sleeved on the end of the drainage tube 2, and is used in conjunction with the suction head 4 and the support frame 502; the support frame 502 is arranged in the conical rubber disc 501, and is connected to the drainage tube 2, and at the same time extends out of the conical rubber disc 501 to be connected to the moving assembly 503; the moving assembly 503 is movably sleeved on the drainage tube 2, and is used to drive the support frame 502 to cooperate with the conical rubber disc 501 to fix the suction head 4 under the patient's skin; When in use, the movable assembly 503 is manually pulled up or down to enable the movable assembly 503 to drive the support frame 502 to open and retract. When the support frame 502 is opened, the support frame 502 cooperates with the conical rubber disc 501 to sandwich the patient's skin from the inside and outside between the support frame 502 and the conical rubber disc 501. At the same time, the conical rubber disc 501 is sucked on the outside of the skin to further fix it on the skin. Furthermore, the conical rubber disc 501 is made of rubber, and can be automatically and quickly adsorbed on the outside of the patient's skin by pressing when in use, and can be disinfected after use; the support frame 502 is also made of rubber or silicone, but its thickness is relatively large, and it can have a certain degree of support; The support frame 502 includes a flexible support rod 502-1, a rotating support rod 502-2 and a J-shaped pull rod 502-3, and the connection relationship thereof is specifically as follows: the end of the flexible support rod 502-1 is rotatably arranged on the drainage tube 2; the two ends of the rotating support rod 502-2 are rotatably connected to the flexible support rod 502-1 and the J-shaped pull rod 502-3 respectively; the J-shaped pull rod 502-3 is fixedly passed through the moving assembly 503, and is used in conjunction with the moving assembly 503; when the J-shaped pull rod 502-3 moves up and down, it drives the rotating support rod 502-2 to move synchronously, and then the rotating support rod 502-2 drives the flexible support rod 502-1 to open or close; The moving assembly 503 includes a moving ring 503-1 and a rack 503-2, and the connection relationship thereof is specifically as follows: the moving ring 503-1 is movably sleeved on the drainage tube 2, and a positioning tooth block 503-1A is movably arranged in the moving ring 503-1; the rack 503-2 is arranged on the outer wall of the drainage tube 2, and is used in conjunction with the positioning tooth block 503-1A to achieve the positioning of the support frame 502; The specific structure of the movable ring 503-1 movably sleeved with the drainage tube 2 is as follows: a slide groove is provided on the outer wall of the drainage tube 2, a positioning block is provided in the movable ring 503-1, and the positioning block is clamped in the slide groove, so that the movable ring 503-1 can move on the drainage tube 2 according to a predetermined trajectory; the specific structure of the positioning tooth block 503-1A movably provided in the movable ring 503-1 is as follows: the positioning tooth block 503-1A is provided in the movable ring 503-1 by a spring 3, and can be close to or away from the movable ring 503-1; the positioning tooth block 503-1A is pressed, and it is used in conjunction with the rack 503-2, The use principle and process of the postoperative subcutaneous fluid drainage device for breast surgery of the preferred embodiment are as follows: when it is necessary to drain the fluid from the postoperative breast surgery patient, first install the collection box 1, then insert the end of the drainage device of the embodiment, i.e. the suction head 4, into the subcutaneous tissue from the patient's wound, and then pull down the J-shaped pull rod 502-3, the J-shaped pull rod 502-3 drives the rotating support rod 502-2 to move synchronously, and then the rotating support rod 502-2 drives the flexible support rod 502-1 to open, and after the flexible support rod 502-1 is opened, it cooperates with the conical rubber disk 501 to tighten the patient's skin from the inside and outside, and in this process, due to the pressure of the skin and the conical rubber disk 501, the flexible support rod 502-1 is bent and fits the conical rubber disk 501 (at this time, the skin is clamped between the flexible support rod 502-1 and the conical rubber disk 501), so as to achieve the effect of fixing the suction head 4; Next, the suction device 3 is started, which generates negative pressure and then sucks the accumulated fluid from the suction head 4 into the drainage tube 2, and then flows from the drainage tube 2 into the collection box 1. After the drainage is completed, the collection box 1 is removed for cleaning and disinfection.

[0026] Embodiment 2: The difference between Example 2 and Example 1 is that, based on Example 1, it is considered that after the accumulated fluid is sucked into the drainage tube 2 from the suction head 4, it should flow into the collection box 1 along the drainage tube 2. However, in the actual drainage process, due to the slight movement of the patient and the unintentional touch of the medical staff, the accumulated fluid entering the drainage tube 2 cannot flow smoothly into the collection box 1, and there may even be a backflow. Therefore, refer to the attached Figure 12-16 As shown, in this embodiment, a backflow prevention mechanism 6 is further designed on the basis of embodiment 1, that is, the backflow prevention mechanism 6 is arranged in the drainage tube 2 to prevent the accumulated fluid in the drainage tube 2 from backflowing or failing to flow smoothly into the collection box 1; Specific reference attached Figure 12-14 As shown, the anti-backflow mechanism 6 includes a plurality of splicing plates 601 and an elastic support assembly 602, wherein the connection relationship is that the bottoms of the plurality of splicing plates 601 are rotatably arranged on the inner wall of the drainage tube 2, and the plurality of splicing plates 601 are used in conjunction with the suction device 3 to prevent the liquid flowing into the drainage tube 2 from backflowing; the elastic support assembly 602 is obliquely arranged between the splicing plates 601 and the drainage tube 2, and is used to support and cooperate with the opening and closing of the splicing plates 601; wherein, in this embodiment, the splicing plates 601 are triangular structures, and the number of the splicing plates 601 is six, and the six splicing plates 601 form a circular structure, thereby closing the inner cavity of the drainage tube 2, and automatically opening when impacted by the effusion, and being in a closed state in a normal state to prevent the effusion that has slipped past from flowing back; Furthermore, the elastic support assembly 602 includes an insertion rod 602-1, a sleeve rod 602-2 and a damping sheet 602-4, and the connection relationship thereof is specifically as follows: the upper end of the insertion rod 602-1 is connected to the splicing plate 601, and the lower end is sleeved in the sleeve rod 602-2 through a spring 1 602-3; the bottom of the sleeve rod 602-2 is connected to the inner wall of the drainage tube 2; the damping sheet 602-4 is arranged at the bottom end of the insertion rod 602-1, and is used in conjunction with the inner wall of the sleeve rod 602-2, and is connected to the spring 1 602-3; wherein the damping sheet 602-4 is a rubber ring or clay, and has a perforation at its center position, so as to be fixedly sleeved on the bottom of the insertion rod 602-1; The specific principle is as follows: the splicing plate 601 rotates, squeezing the plug rod 602-1, and the plug rod 602-1 compresses the spring 1 602-3, and then the spring 1 602-3 is compressed as the splicing plate 601 continues to rotate. When the force applied to the splicing plate 601 disappears, the pressure applied to the spring 1 602-3 disappears, and the spring 1 602-3 rebounds and recovers, pushing the plug rod 602-1 to move synchronously. Since a damping plate 602-4 is provided at the bottom of the plug rod 602-1, during the recovery process of the spring 1 602-3, the edge of the damping plate 602-4 rubs against the inner wall of the sleeve rod 602-2, thereby slowing down the rebound process of the spring 1 602-3, thereby achieving the effect of slowly closing the splicing plate 601, so that the remaining accumulated fluid can pass completely; Further references Figure 15-16 As shown, considering the backflow situation of the collection box 1, a backflow component 7 is also provided in the corresponding embodiment, wherein the backflow component 7 is specifically configured as follows: a liquid inlet nozzle 101 is provided at the liquid inlet of the collection box 1, the lower end diameter of the liquid inlet nozzle 101 is larger than the upper end diameter, and the backflow component 7 is provided inside the lower end of the liquid inlet nozzle 101 to prevent the liquid entering the collection box 1 from flowing out; Specifically, the backflow component 7 includes a baffle 701 and a plurality of springs 702, and the connection relationship thereof is specifically as follows: the baffle 701 is arranged at the lower end of the liquid inlet nozzle 101, and is used to block the liquid inlet of the collection box 1; a plurality of springs 702, one end of which is connected to the baffle 701, and the other end is connected to the inner wall of the liquid inlet nozzle 101, and is used to cooperate with the baffle 701 to allow the liquid in the drainage tube 2 to smoothly enter the collection box 1 and prevent backflow; wherein, the number of springs 702 is two; When the accumulated liquid in the drainage tube 2 enters the liquid inlet nozzle 101, the impact force of the accumulated liquid pushes the baffle 701 forward, and the forward movement of the baffle 701 stretches the spring 2 702, so that the baffle 701 is separated from the lower end of the liquid inlet nozzle 101, so that the accumulated liquid can smoothly enter the collection box 1. When there is no accumulated liquid flowing in, when the spring 2 702 recovers its deformation, the spring 2 702 pulls the baffle 701 to restore its initial state, thereby blocking the lower port of the liquid inlet nozzle 101, preventing the accumulated liquid entering the collection box 1 from flowing back into the drainage tube 2.

[0027] The principle and process of use of the postoperative subcutaneous effusion drainage device for breast surgery of the preferred embodiment are as follows: when the effusion enters the drainage tube 2 from the suction head 4, under the impact of the effusion, the splicing plate 601 rotates downward, thereby squeezing the insertion rod 602-1, and the insertion rod 602-1 compresses the spring 1 602-3, and then the spring 1 602-3 is compressed as the splicing plate 601 continues to rotate. When no effusion passes through the drainage tube 2, the pressure applied to the splicing plate 601 disappears, and then the splicing plate 601 is compressed. The pressure applied to spring 1 602-3 disappears, and spring 1 602-3 rebounds and recovers, pushing the insertion rod 602-1 to move upward synchronously. Since a damping plate 602-4 is set at the bottom of the insertion rod 602-1, during the recovery process of spring 1 602-3, the edge of the damping plate 602-4 rubs against the inner wall of the sleeve rod 602-2, thereby slowing down the rebound process of spring 1 602-3, thereby achieving the effect of slowly closing the splicing plate 601, thereby allowing the remaining accumulated liquid with little impact force to pass completely.

[0028] The use principle and process of the postoperative subcutaneous fluid drainage device for breast surgery of the present invention are as follows: when it is necessary to drain the fluid from the postoperative breast surgery patient, first install the collection box 1, then insert the end of the drainage device of this embodiment, that is, the suction head 4, into the subcutaneous tissue from the patient's wound, and then pull down the J-shaped pull rod 502-3, the J-shaped pull rod 502-3 drives the rotating support rod 502-2 to move synchronously, and then the rotating support rod 502-2 drives the flexible support rod 502-1 to open, and after the flexible support rod 502-1 is opened, it cooperates with the conical rubber disk 501 to tighten the patient's skin from the inside and outside, and in this process, due to the pressure of the skin and the conical rubber disk 501, the flexible support rod 502-1 is bent and fits the conical rubber disk 501 (at this time, the skin is clamped between the flexible support rod 502-1 and the conical rubber disk 501), so as to achieve the effect of fixing the suction head 4; Next, the suction device 3 is started, and the suction device 3 generates negative pressure to suck the accumulated fluid from the suction head 4 into the drainage tube 2, and then flows from the drainage tube 2 into the collection box 1. Under the impact of the accumulated fluid, the splicing plate 601 rotates downward, thereby squeezing the insertion rod 602-1, and the insertion rod 602-1 compresses the spring 1 602-3, and then the spring 1 602-3 is compressed as the splicing plate 601 continues to rotate. When there is no accumulated fluid passing through the drainage tube 2, the pressure applied to the splicing plate 601 disappears. Then the pressure applied to the spring 1 602-3 disappears, the spring 1 602-3 rebounds and restores, pushing the insertion rod 602-1 to move upward synchronously. Since the damping plate 602-4 is arranged at the bottom of the insertion rod 602-1, during the recovery process of the spring 1 602-3, the edge of the damping plate 602-4 rubs against the inner wall of the sleeve rod 602-2, thereby slowing down the rebound process of the spring 1 602-3, thereby achieving the effect of slowly closing the splicing plate 601, thereby allowing the remaining effluent with little impact force to pass completely; When the accumulated liquid in the drainage tube 2 enters the liquid inlet nozzle 101, the impact force of the accumulated liquid pushes the baffle 701 forward, and the forward movement of the baffle 701 stretches the spring 2 702, so that the baffle 701 is separated from the lower end of the liquid inlet nozzle 101, so that the accumulated liquid can smoothly enter the collection box 1. When there is no accumulated liquid flowing in, when the spring 2 702 recovers its deformation, the spring 2 702 pulls the baffle 701 to restore its initial state, thereby blocking the lower port of the liquid inlet nozzle 101, preventing the accumulated liquid entering the collection box 1 from flowing back into the drainage tube 2. After completion, the collection box 1 is removed for cleaning and disinfection.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A postoperative subcutaneous fluid drainage device for breast surgery, comprising a collection box (1), characterized in that: The lower end of the collection box (1) is connected to a drainage tube (2), a suction device (3) for negative pressure suction is provided on the body of the drainage tube (2), and a suction head (4) is provided at the lower end of the drainage tube (2). A fixing mechanism (5) for fixing the suction head (4) under the patient's skin is provided at the end of the suction head (4), and a backflow prevention mechanism (6) is provided in the drainage tube (2) for preventing the backflow of the accumulated fluid in the drainage tube (2).

2. A postoperative subcutaneous fluid drainage device for breast surgery according to claim 1, characterized in that: The fixing mechanism (5) comprises: The conical rubber disc (501) is sleeved on the end of the drainage tube (2) and is used in conjunction with the suction head (4) and the support frame (502); The support frame (502) is arranged in the conical rubber disc (501) and is connected to the drainage tube (2), while extending out of the conical rubber disc (501) and being connected to the moving component (503); The movable assembly (503) is movably mounted on the drainage tube (2) and is used to drive the support frame (502) to cooperate with the conical rubber disc (501) to fix the suction head (4) under the patient's skin.

3. A postoperative subcutaneous fluid drainage device for breast surgery according to claim 2, characterized in that: The support frame (502) comprises: A flexible support rod (502-1), the end of which is rotatably arranged on the drainage tube (2); The rotating support rod (502-2) has two ends which are rotatably connected to the flexible support rod (502-1) and the J-shaped pull rod (502-3) respectively; The J-shaped pull rod (502-3) passes through the moving assembly (503) and cooperates with the moving assembly (503) for use.

4. A postoperative subcutaneous fluid drainage device for breast surgery according to claim 3, characterized in that: The mobile component (503) includes: A movable ring (503-1) is movably sleeved on the drainage tube (2), and a positioning tooth block (503-1A) is movably arranged inside the movable ring (503-1); The rack (503-2) is arranged on the outer wall of the drainage tube (2) and is used in conjunction with the positioning tooth block (503-1A) to achieve positioning of the support frame (502).

5. The device for drainage of subcutaneous fluid after breast surgery according to claim 1, characterized in that: The backflow prevention mechanism (6) comprises: A plurality of splicing plates (601) whose bottoms are rotatably arranged on the inner wall of the drainage tube (2); the plurality of splicing plates (601) are used in conjunction with the suction device (3) to prevent the liquid flowing into the drainage tube (2) from flowing back; The elastic support assembly (602) is obliquely arranged between the splicing plate (601) and the drainage tube (2), and is used to support and cooperate with the opening and closing of the splicing plate (601).

6. A post-operative subcutaneous fluid drainage device for breast surgery according to claim 5, characterized in that: The elastic support assembly (602) comprises: The inserting rod (602-1) has an upper end connected to the splicing plate (601) and a lower end sleeved in the sleeve rod (602-2) via a spring 1 (602-3); A sleeve rod (602-2), the bottom of which is connected to the inner wall of the drainage tube (2); The damping plate (602-4) is arranged at the bottom end of the insertion rod (602-1) and is used in conjunction with the inner wall of the sleeve rod (602-2). The damping plate (602-4) is connected to the spring 1 (602-3).

7. The device for drainage of subcutaneous fluid after breast surgery according to claim 1, characterized in that: The liquid inlet of the collection box (1) is provided with a liquid inlet nozzle (101), the diameter of the lower end of the liquid inlet nozzle (101) is larger than the diameter of the upper end, and a backflow component (7) is provided inside the lower end of the liquid inlet nozzle (101) to prevent liquid entering the collection box (1) from flowing out.

8. A post-operative subcutaneous fluid drainage device for breast surgery according to claim 7, characterized in that: The reflux component (7) includes: A baffle (701) is arranged at the lower end of the liquid inlet nozzle (101) and is used to block the liquid inlet of the collection box (1); A plurality of springs (702) are connected at one end to the baffle (701) and at the other end to the inner wall of the liquid inlet nozzle (101), and are used to cooperate with the baffle (701) to allow the liquid in the drainage tube (2) to smoothly enter the collection box (1) to prevent backflow.

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