ICU critical patient surgery drainage device

Abstract

The application discloses an ICU critical patient operation drainage device, relates to the technical field of medical devices, and solves the problems of poor drainage effect of a conventional drainage tube, secondary damage caused by replacement of a double-cavity drainage tube, and difficulty of a new drainage tube placed beside a bed in reaching a target position. The device comprises a flushing tube and a negative pressure suction tube manufactured integrally side by side, the connecting ends of the two tubes are separated, the flushing end is 1-3 cm longer than the negative pressure suction end, the two tubes are each provided with a length scale line with an end part of 0 scale, the connecting ends are each provided with a special interface with an adjusting valve, and a limiting clamping piece is further provided to realize double fixation. In use, the device is directly inserted into the conventional drainage tube, external flushing and negative pressure equipment are connected, and after fixation, the flushing flow and the negative pressure intensity are respectively adjusted through the adjusting valves. The device does not need to replace the original drainage tube, flushing and suction are cooperatively operated to improve the thoroughness of drainage, parameters can be flexibly adjusted, the insertion depth is accurate, the fixation is firm and displacement is prevented, operation is convenient, the device is suitable for various drainage scenes in clinical application, can reduce the risk of infection, and improves safety.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a surgical drainage device for critically ill ICU patients. Background Technology

[0002] Postoperative drainage of critically ill patients in the ICU (Intensive Care Unit) often requires draining of accumulated fluid, blood, pus, or other secretions to maintain internal homeostasis, prevent complications such as infection and organ compression, and ensure patient recovery. Currently, commonly used ICU surgical drainage devices are mostly traditional combinations of drainage bags and tubes, which have several shortcomings in practical application. Traditional drainage devices rely heavily on gravity drainage, and the drainage rate cannot be flexibly adjusted according to the patient's condition, resulting in poor drainage of viscous fluid or blood. During drainage, changes in patient position, improper drainage bag height, or unstable negative pressure can easily lead to reflux of drainage fluid, causing surgical site infection. ICU patients have weakened immune systems, making them more susceptible to serious complications and even life-threatening situations after infection. Some existing surgical drainage devices do not drain completely, failing to adequately drain purulent fluid from the abdominal cavity. When the amount of pus is small or the environment around the drainage tube is complex, exudate may have difficulty flowing smoothly into the tube, causing local effusion, increasing the risk of infection, making infection control more difficult, and affecting patient recovery. Excessive negative pressure in some surgical drainage devices may cause the drainage tube to adhere to tissues, obstructing drainage and potentially damaging tissues. Patient movement can easily cause the drainage tube to dislodge or shift, interrupting drainage, and pulling on the drainage tube can damage the surgical wound.

[0003] Postoperative drainage using conventional drainage tubes may lead to secondary surgical site infection, and the drainage effect of conventional drainage tubes is not as good as that of double-lumen drainage tubes. If the conventional drainage tube is replaced with a double-lumen drainage tube, there is a risk that the replacement double-lumen drainage tube may not be properly positioned at the wound site, resulting in poor drainage; or surgery may be performed to replace the conventional drainage tube with a double-lumen drainage tube, but this increases the trauma to the patient.

[0004] In response to the technical problems of postoperative drainage in ICU critically ill patients, there is an urgent need for a surgical drainage device for ICU critically ill patients that is structurally sound, easy to operate, has good drainage effect, and is highly safe, so as to meet clinical treatment needs and improve the safety and effectiveness of drainage treatment for ICU critically ill patients. Summary of the Invention

[0005] The purpose of this invention is to provide a surgical drainage device for ICU critically ill patients, which solves the problem that conventional drainage tubes are not effective for draining infected sites after surgery in ICU critically ill patients, and improves the drainage effect of conventional drainage tubes without replacing the original drainage tubes.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a surgical drainage device for critically ill ICU patients, comprising a flushing tube and a negative pressure suction tube, wherein the two ends of the flushing tube are a flushing end and a flushing connection end, and the two ends of the negative pressure suction tube are a negative pressure suction end and a negative pressure connection end; the flushing tube and the negative pressure suction tube are manufactured integrally and arranged side by side, and the flushing connection end of the flushing tube and the negative pressure connection end of the negative pressure suction tube are separated from each other.

[0007] By adopting the above-mentioned technical solution, the integrated design of the flushing tube and the negative pressure suction tube allows it to be directly inserted into the lumen of existing conventional drainage tubes in clinical settings, eliminating the need for secondary surgery to replace the double-lumen drainage tube. This fundamentally avoids secondary bodily damage caused by drainage tube replacement. Simultaneously, the integrated structure ensures synchronous movement of both tubes, preventing relative displacement and improving operational convenience. The flushing connection and negative pressure connection are separate, allowing independent connection to external flushing fluid devices and negative pressure suction devices, enabling independent control of flushing and negative pressure suction operations. Medical staff can adjust the flushing and suction parameters separately according to the patient's condition without interference, solving the problem of traditional drainage devices having limited functionality and lacking flexible adjustment.

[0008] The present invention is further configured such that: the rinsing end of the rinsing tube is longer than the negative pressure suction end of the negative pressure suction tube, and the rinsing end of the rinsing tube is 1cm-3cm longer than the negative pressure suction end of the negative pressure suction tube.

[0009] By adopting the above technical solution, the rinsing end is set 1cm-3cm ahead of the negative pressure suction end, allowing the rinsing fluid to first contact the accumulated fluid, blood, and purulent secretions in the patient's drainage area. This thoroughly rinses, dilutes, and disperses the viscous secretions, transforming the originally difficult-to-flow viscous fluid into an easily aspirable liquid, which is then precisely suctioned by the rear negative pressure suction end. This effectively solves the problem of incomplete drainage of viscous fluid by traditional drainage devices. At the same time, this length difference ensures that the negative pressure suction end does not directly face the surgical wound tissue and organs, avoiding tissue damage caused by direct suction of tissues and organs. It also prevents the rinsing fluid from being directly sucked away by the negative pressure suction end before it can fully perform its rinsing function, ensuring the synergistic effect of rinsing and suction.

[0010] The present invention is further configured such that the rinsing end of the rinsing tube is 1cm, 1.5cm, 2cm, 2.5cm or 3cm longer than the negative pressure suction end of the negative pressure suction tube.

[0011] By adopting the above technical solution, multiple specific length difference specifications of 1cm, 1.5cm, 2cm, 2.5cm, and 3cm are provided to adapt to different surgical scenarios in ICU clinical practice, such as abdominal surgery and thoracic surgery, as well as different conditions of fluid viscosity and volume. Medical staff can select the corresponding specification according to the patient's actual condition and drainage needs, so that the flushing end and negative pressure suction end can be matched to the best state, further improving the thoroughness of drainage and solving the problem of poor adaptability of traditional drainage devices.

[0012] The present invention is further configured such that: the surface of the rinsing tube is provided with length scale lines, and the starting 0 scale line of the length scale lines is located at the rinsing end of the rinsing tube.

[0013] By adopting the above technical solution, a length scale line with the rinsing end as the 0 mark is set on the surface of the rinsing tube. When medical staff insert the rinsing tube into the conventional drainage tube, they can accurately control the insertion depth through the scale line. This allows the rinsing end to be accurately placed in the core area where the fluid accumulates in the patient's drainage site. This avoids the rinsing fluid not being able to reach the deep fluid due to shallow insertion, or the normal tissues and organs around the wound being damaged due to deep insertion. This improves the accuracy and safety of the operation and solves the problem of inaccurate control of the insertion depth in drainage operations.

[0014] The present invention is further configured such that: the surface of the negative pressure suction tube is provided with a length scale line, and the starting 0 scale line of the length scale line is located at the negative pressure suction end of the negative pressure suction tube.

[0015] By adopting the above technical solution, the negative pressure suction tube is independently equipped with a length scale line with the suction end as the 0 mark, which matches the scale line of the irrigation tube. Medical staff can check the insertion depth of the irrigation end and the negative pressure suction end separately, accurately confirm whether the relative length difference between the two meets the clinical operation requirements, avoid the length difference deviation caused by displacement during insertion, and ensure the synergistic effect of irrigation and suction. At the same time, it can also intuitively grasp the position of the negative pressure suction end in the drainage tube, prevent drainage blind spots caused by the position deviation of the suction end, and further improve the thoroughness of drainage.

[0016] The present invention is further configured such that: the flushing connection end of the flushing tube is provided with a flushing interface, and the flushing tube is connected to an external flushing liquid device through the flushing interface; the negative pressure connection end of the negative pressure suction tube is provided with a negative pressure interface, and the negative pressure suction tube is connected to an external negative pressure device through the negative pressure interface.

[0017] By adopting the above technical solutions, the flushing interface and negative pressure interface can adopt a standardized structural design, which is compatible with commonly used clinical equipment such as flushing fluid bags, flushing pumps, and negative pressure aspirators. There is no need to equip them with additional special external equipment, which reduces the clinical use cost and the difficulty of equipment adaptation. The special interface structure makes the connection between the flushing tube, negative pressure aspiration tube and external equipment more sealed and stable, effectively avoiding leakage of fluid or air at the connection point, ensuring the continuity of flushing fluid delivery and the stability of negative pressure aspiration, and solving the problem of reduced drainage effect caused by loose connection of drainage device.

[0018] The present invention is further configured such that: the flushing port is provided with a second regulating valve, and the negative pressure port is provided with a first regulating valve.

[0019] By adopting the above technical solution, a regulating valve two is installed at the irrigation interface, enabling precise and stepless adjustment of the irrigation fluid flow rate and velocity. Medical staff can adjust the input volume of the irrigation fluid according to the viscosity of the patient's effusion and drainage needs, avoiding excessive input of irrigation fluid that could lead to excessively high pressure in the patient's wound, or insufficient input that would not achieve an effective irrigation effect. A regulating valve one is installed at the negative pressure interface, allowing for flexible adjustment of the negative pressure suction intensity. The negative pressure can be increased for viscous effusions and decreased for thin effusions, avoiding excessive negative pressure that could cause damage to the tissue to be drained by the drainage tube, and also avoiding insufficient negative pressure that could lead to incomplete drainage. This achieves personalized adjustment of irrigation and suction parameters, solving the problem that drainage devices cannot flexibly adjust drainage speed and negative pressure intensity.

[0020] The invention is further configured to include a limiting clip, which includes a movable base and a clip body. The clip body is located in front of the movable base, and a connecting rod is provided between the movable base and the clip body for connection. A fixed base is provided on the back of the movable base. The flushing tube and the negative pressure suction tube pass through the movable base and the fixed base to form a perforation. The movable base, the fixed base, the flushing tube, and the negative pressure suction tube are slidably connected. A strap is provided on the surface of the fixed base.

[0021] By adopting the above technical solution, the limiting clip can slide freely along the irrigation tube and the negative pressure suction tube. After the medical staff inserts the device into the conventional drainage tube, they can slide the limiting clip to securely engage the clip with the outer end of the drainage tube, thereby fixing the drainage tube and the device relatively. This prevents the irrigation tube and the negative pressure suction tube from shifting or falling out of the drainage tube due to the patient turning over or moving their limbs, thus avoiding drainage interruption. The straps on the fixing base can fix the device to the patient's skin, clothing, or bed rails, achieving overall device fixation and further preventing device displacement. This reduces damage to the surgical wound caused by the traction of the drainage tube and solves the problem of easy displacement and detachment of traditional drainage devices.

[0022] The present invention is further configured such that: an adhesive layer is provided on the inner side of the strap, and a protective film is provided on the surface of the adhesive layer; the adhesive layer is a gel or adhesive.

[0023] By adopting the above technical solution, the protective film can effectively protect the adhesive layer, preventing it from being contaminated by dust and stains when not in use, and maintaining the adhesiveness of the adhesive layer. The adhesive layer is made of gel or medical adhesive material, which has good adhesive properties and can firmly fix the bandage to the patient's skin. At the same time, this material has low skin irritation and good compatibility, which is suitable for the fragile skin condition of ICU critically ill patients after surgery, avoiding skin allergies, redness and swelling, etc., and there is no adhesive residue after removal, making it easy to care for. The adhesive layer and the bandage work together to achieve double fixation of the device, further improving the stability of fixation and ensuring the continuity of the drainage process.

[0024] The present invention further provides a method for using the above-mentioned surgical drainage device for critically ill ICU patients, the specific steps of which are as follows:

[0025] The irrigation tube is connected to an external irrigation fluid device via an irrigation interface; the negative pressure suction tube is connected to an external negative pressure device via a negative pressure interface; the irrigation end of the irrigation tube and the negative pressure suction end of the negative pressure suction tube are inserted into the lumen of the drainage tube from the outer end of the drainage tube, and further into the inner end of the drainage tube located at the patient's surgical wound; the sliding adjustment limit clamp is used to lock the outer end of the drainage tube onto the clamp body; the protective film of the adhesive layer is peeled off; the irrigation tube, negative pressure suction tube and fixing seat are fixed by the strap; the irrigation fluid flow rate of the irrigation tube is adjusted by the second regulating valve, and the negative pressure of the negative pressure suction tube is adjusted by the first regulating valve.

[0026] By adopting the above technical solution, the drainage device is easy to use and operate, requiring no complex professional training. ICU medical staff can quickly learn to operate it, improving clinical work efficiency. The entire operation process does not require replacing the patient's original conventional drainage tube; the device can be directly inserted into the existing drainage tube, achieving the invention's objective of improving drainage effect without causing secondary damage to the patient. Through the dual fixation method of limiting clips and straps, the problem of easy displacement and detachment of the drainage device is completely solved from two aspects: relative fixation between the device and the drainage tube, and overall fixation between the device and the patient. By independently adjusting the negative pressure suction intensity and the flushing fluid flow rate through regulating valve one and regulating valve two, medical staff can dynamically adjust according to the patient's real-time condition and the drainage of accumulated fluid, achieving personalized flushing and drainage treatment, maximizing the effect of flushing and suction, effectively improving the thoroughness of drainage, and reducing the risk of infection.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. This device adopts an integrated flushing tube and negative pressure suction tube structure, which can be directly inserted into existing conventional drainage tubes in clinical practice. It eliminates the need for patients to undergo a second surgery to replace the double-lumen drainage tube, thus avoiding secondary wound damage caused by replacing the drainage tube. It is suitable for the postoperative physical condition of critically ill patients in the ICU.

[0029] 2. By setting the flushing end to 1cm-3cm ahead of the negative pressure suction end, the flushing solution is first diluted and dispersed to achieve a synergistic effect of precise suction by the negative pressure suction end. This effectively solves the problem of incomplete drainage of viscous fluid and purulent secretions by traditional drainage devices and reduces the risk of infection caused by local fluid accumulation.

[0030] 3. The negative pressure suction intensity and the flow rate and velocity of the irrigation fluid can be independently adjusted by regulating valve one and regulating valve two. Medical staff can dynamically adjust the flow rate and velocity according to the patient's actual condition, such as the type of surgical wound, the viscosity of the effusion, and the amount of effusion. This avoids problems such as excessive negative pressure damaging tissue, insufficient negative pressure causing incomplete drainage, or improper irrigation fluid input leading to excessive pressure at the drainage site, thus achieving personalized irrigation and drainage treatment.

[0031] 4. The flushing tube and the negative pressure suction tube are each equipped with a length scale line with the end as the 0 mark. Medical staff can accurately control the insertion depth of the device and place the flushing end and the suction end precisely in the area where the fluid accumulates. This avoids inserting too deeply and damaging normal tissue, or inserting too shallowly and causing a drainage blind spot, thus improving the accuracy and safety of the operation.

[0032] 5. The device is relatively fixed to the conventional drainage tube by limiting clips, and the device is fixed to the patient by a bandage with an adhesive layer. The double fixation structure effectively prevents the device from shifting or falling off when the patient moves, avoids interruption of drainage, and reduces damage to the surgical wound caused by the traction of the drainage tube, ensuring the continuity of the drainage process.

[0033] 6. The device has a simple overall structure and is integrally molded, making it easy to operate and disinfect. The standardized interface design is compatible with commonly used clinical irrigation and negative pressure equipment, eliminating the need for additional specialized equipment and reducing clinical usage costs. It offers a variety of length specifications to adapt to different clinical surgical scenarios, improving the device's clinical adaptability and practicality.

[0034] 7. The flushing connection and the negative pressure connection are separated, allowing flushing and negative pressure suction operations to be performed independently without interference. This ensures the stability of flushing fluid delivery and negative pressure suction, effectively avoids backflow of drainage fluid, reduces the risk of surgical site infection, and improves the safety and effectiveness of drainage treatment for critically ill patients in the ICU. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the drainage device according to Embodiment 1 of the present invention;

[0036] Figure 2 This is a schematic diagram of the drainage device according to Embodiment 2 of the present invention;

[0037] Figure 3 This is a schematic diagram of the drainage device in Embodiment 3 of the present invention;

[0038] Figure 4 This is a schematic diagram of the drainage device in Embodiment 3 of the present invention;

[0039] Figure 5 This is a schematic diagram of the limiting card in Embodiment 3 of the present invention;

[0040] Figure 6 This is a schematic diagram of the limiting card in Embodiment 3 of the present invention.

[0041] In the diagram: 1. Flushing tube; 2. Negative pressure suction tube; 3. Length scale line; 4. Flushing interface; 5. Negative pressure interface; 6. Regulating valve one; 7. Regulating valve two; 8. Limiting clip; 11. Flushing end; 12. Flushing connection end; 21. Negative pressure suction end; 22. Negative pressure connection end; 81. Movable seat; 82. Fixed seat; 83. Perforation; 84. Strap; 85. Clip body; 86. Connecting rod. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0043] Example 1: A surgical drainage device for critically ill ICU patients, such as Figure 1 As shown, it includes a flushing tube 1 and a negative pressure suction tube 2. The two ends of the flushing tube 1 are a flushing end 11 and a flushing connection end 12, and the two ends of the negative pressure suction tube 2 are a negative pressure suction end 21 and a negative pressure connection end 22. The flushing tube 1 and the negative pressure suction tube 2 are manufactured as a single unit with the flushing tube 1 and the negative pressure connection end 22 of the negative pressure suction tube 2 being separate from each other.

[0044] The rinsing end 11 of the rinsing tube 1 is longer than the negative pressure suction end 21 of the negative pressure suction tube 2. The rinsing end 11 of the rinsing tube 1 is 1cm-3cm longer than the negative pressure suction end 21 of the negative pressure suction tube 2. Specifically, the rinsing end 11 of the rinsing tube 1 is 1cm, 1.5cm, 2cm, 2.5cm, or 3cm longer than the negative pressure suction end 21 of the negative pressure suction tube 2. The rinsing tube 1 has a length scale line 3 on its surface, and the starting 0 scale line of the length scale line 3 is located at the rinsing end 11 of the rinsing tube 1.

[0045] Example 2: A surgical drainage device for critically ill ICU patients, such as Figure 2As shown, it is basically the same as in Embodiment 1, except that the surface of the negative pressure suction tube 2 is provided with length scale lines 3, and the starting 0 scale line of the length scale line 3 is located at the negative pressure suction end 21 of the negative pressure suction tube 2. The flushing connection end 12 of the flushing tube 1 is provided with a flushing interface 4, and the flushing tube 1 is connected to an external flushing liquid device through the flushing interface 4; the negative pressure connection end 22 of the negative pressure suction tube 2 is provided with a negative pressure interface 5, and the negative pressure suction tube 2 is connected to an external negative pressure device through the negative pressure interface 5. The flushing interface 4 is provided with a second regulating valve 7, and the negative pressure interface 5 is provided with a first regulating valve 6.

[0046] Example 3: A surgical drainage device for critically ill ICU patients, such as Figures 3-6 As shown, the device is basically the same as in Embodiments 1 and 2, except that the drainage device is also equipped with a matching limiting clip 8. The limiting clip 8 includes a movable base 81 and a clip body 85. The clip body 85 is located in front of the movable base 81, and a connecting rod 86 connects the movable base 81 and the clip body 85. A fixed base 82 is provided on the back of the movable base 81. The flushing tube 1 and the negative pressure suction tube 2 pass through the movable base 81 and the fixed base 82 to form a perforation 83. The movable base 81 and the fixed base 82 are slidably connected to the flushing tube 1 and the negative pressure suction tube 2. A strap 84 is provided on the surface of the fixed base 82. An adhesive layer is provided on the inner side of the strap 84, and a protective film is provided on the surface of the adhesive layer. The adhesive layer is a gel or adhesive.

[0047] Working principle: When in use, first connect the irrigation tube 1 to the external irrigation fluid device through the irrigation interface 4, and connect the negative pressure suction tube 2 to the external negative pressure device through the negative pressure interface 5. Using the length scale lines 3 on the surface of the irrigation tube 1 and the negative pressure suction tube 2, accurately insert the irrigation end 11 and the negative pressure suction end 21 into the conventional drainage tube and extend them to the inside of the patient's surgical wound. The leading irrigation end 11 delivers irrigation fluid into the wound first, diluting and dispersing the accumulated fluid, blood, and purulent secretions, and converting the viscous secretions into a flowable liquid. Under the action of the negative pressure device, the rear negative pressure suction end 21 quickly and thoroughly aspirates the diluted drainage fluid, realizing the coordinated operation of irrigation and suction.

[0048] The negative pressure intensity and flushing fluid flow rate can be dynamically adjusted by regulating valve 6 and regulating valve 7 respectively, so that the parameters of the two are matched to achieve the best drainage effect. At the same time, the clamp body 85 of the limiting clip 8 is used to fix the outer end of the conventional drainage tube, and the adhesive layer of the binding strap 84 is used to fix the flushing tube 1 and the negative pressure suction tube 2 to the fixing seat 82, and fix the device to the patient or bed frame, realizing the dual fixation of the device and the drainage tube, and the device and the patient, preventing the device from shifting or falling off. The separate design of the flushing connection end 12 and the negative pressure connection end 22 ensures independent control of flushing and suction, avoids mutual interference, and prevents backflow of drainage fluid. Ultimately, without replacing the conventional drainage tube and without causing secondary damage to the patient, the thoroughness and safety of drainage are greatly improved, and the risk of postoperative infection in ICU critically ill patients is reduced.

[0049] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A surgical drainage device for critically ill ICU patients, characterized in that, It includes a flushing tube (1) and a negative pressure suction tube (2). The two ends of the flushing tube (1) are a flushing end (11) and a flushing connection end (12). The two ends of the negative pressure suction tube (2) are a negative pressure suction end (21) and a negative pressure connection end (22). The flushing tube (1) and the negative pressure suction tube (2) are manufactured as a single unit with the flushing tube (1) and the negative pressure connection end (22) of the negative pressure suction tube (2) being separate from each other.

2. The surgical drainage device for critically ill ICU patients according to claim 1, characterized in that, The flushing end (11) of the flushing tube (1) is longer than the negative pressure suction end (21) of the negative pressure suction tube (2), and the flushing end (11) of the flushing tube (1) is 1cm-3cm longer than the negative pressure suction end (21) of the negative pressure suction tube (2).

3. The surgical drainage device for critically ill ICU patients according to claim 2, characterized in that, The flushing end (11) of the flushing tube (1) is 1cm, 1.5cm, 2cm, 2.5cm or 3cm longer than the negative pressure suction end (21) of the negative pressure suction tube (2).

4. A surgical drainage device for ICU critically ill patients according to any one of claims 1-3, characterized in that, The surface of the rinsing tube (1) is provided with a length scale line (3), and the starting 0 scale line of the length scale line (3) is located at the rinsing end (11) of the rinsing tube (1).

5. A surgical drainage device for critically ill ICU patients according to any one of claims 1-3, characterized in that, The surface of the negative pressure suction tube (2) is provided with a length scale line (3), and the starting 0 scale line of the length scale line (3) is located at the negative pressure suction end (21) of the negative pressure suction tube (2).

6. The surgical drainage device for critically ill ICU patients according to claim 1, characterized in that, The flushing tube (1) has a flushing interface (4) at its flushing connection end (12), and the flushing tube (1) is connected to an external flushing liquid device through the flushing interface (4); the negative pressure connection end (22) of the negative pressure suction tube (2) has a negative pressure interface (5), and the negative pressure suction tube (2) is connected to an external negative pressure device through the negative pressure interface (5).

7. The surgical drainage device for critically ill ICU patients according to claim 6, characterized in that, The flushing port (4) is equipped with regulating valve 2 (7), and the negative pressure port (5) is equipped with regulating valve 1 (6).

8. The surgical drainage device for critically ill ICU patients according to claim 1, characterized in that, It also includes a limiting clip (8), which includes a movable base (81) and a clip body (85). The clip body (85) is located in front of the movable base (81). A connecting rod (86) is provided between the movable base (81) and the clip body (85). A fixed base (82) is provided on the back of the movable base (81). The flushing pipe (1) and the negative pressure suction pipe (2) pass through the movable base (81) and the fixed base (82) and form a perforation (83). The movable base (81) and the fixed base (82) are slidably connected to the flushing pipe (1) and the negative pressure suction pipe (2). A strap (84) is provided on the surface of the fixed base (82).

9. The surgical drainage device for critically ill ICU patients according to claim 8, characterized in that, The inner side of the strap (84) is provided with an adhesive layer, and a protective film is provided on the surface of the adhesive layer; the adhesive layer is a gel or adhesive.

10. A method of using a surgical drainage device for critically ill ICU patients according to claims 1-9, characterized in that, The flushing tube (1) is connected to an external flushing fluid device through the flushing interface (4); the negative pressure suction tube (2) is connected to an external negative pressure device through the negative pressure interface (5); the flushing end (11) of the flushing tube (1) and the negative pressure suction end (21) of the negative pressure suction tube (2) are inserted into the lumen of the drainage tube from the outer end of the drainage tube and penetrate to the inner end of the drainage tube located in the patient's surgical wound; the sliding adjustment limit clip (8) is used to fix the outer end of the drainage tube to the clip body (85), the protective film of the adhesive layer is peeled off, and the flushing tube (1), the negative pressure suction tube (2) and the fixing seat (82) are fixed by the strap (84); the flushing fluid flow rate of the flushing tube (1) is adjusted by the second regulating valve (7), and the negative pressure of the negative pressure suction tube (2) is adjusted by the first regulating valve (6).

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