Postoperative incision negative pressure suction device

Abstract

The invention belongs to the technical field of medical instruments, and discloses a postoperative incision negative pressure suction device which comprises an abdominal belt, a negative pressure mechanism and a liquid storage bottle are hung on the abdominal belt, the negative pressure end of the negative pressure mechanism is communicated with the liquid storage bottle, the liquid storage bottle is communicated with a drainage sponge, and the drainage sponge is communicated with a drainage tube. An existing postoperative incision negative pressure suction device generally has the problems that adaptability is insufficient, drainage sealing is not good, effusion observation is inconvenient, a pipeline is prone to being blocked, and maintenance is tedious. According to the device, the adjustable tightness structure of the bellyband and the visual identification are matched with different body types, and the wearing comfort is improved through the inner contact surface soft cushion; the sealing and fixing effects are enhanced by a sucker-imitated leakage-proof fixing part of the drainage sponge; the hose quick-plug connector and the filter disc achieve the functions of convenient disassembly and assembly and blockage prevention respectively, the operation process is simplified through the overall integrated design, drainage stability and sealing performance are improved, the infection risk is reduced, and the working efficiency of medical staff and the use experience of patients are both considered.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a postoperative incision negative pressure suction device. Background Technology

[0002] After surgery, the incision area is often accompanied by exudate, blood accumulation, or pus due to tissue damage and local inflammation. If such fluids cannot be drained in time and completely, dead space can easily form below the incision. This not only hinders the growth of new granulation tissue and prolongs the wound healing period, but also significantly increases the risk of complications such as wound infection, fat liquefaction, and even wound dehiscence, seriously affecting the patient's postoperative recovery process and quality of life. Therefore, postoperative incision drainage is a core aspect of surgical care, and its drainage effect is directly related to the surgical prognosis.

[0003] Currently, the commonly used postoperative incision drainage methods in clinical practice are mainly divided into two categories: passive drainage and active negative pressure drainage. Passive drainage, represented by traditional gauze drainage and rubber tube drainage, relies on the gravity of the fluid itself or the tissue pressure difference to achieve drainage. It has a simple structure but extremely low drainage efficiency, and can only drain a small amount of fluid from the surface of the incision. It is difficult to effectively drain deep effusions or viscous pus, and during the drainage process, fluid accumulation can easily form blockages, leading to drainage dead zones. At the same time, passive drainage lacks an effective fluid collection and sealing structure, which can easily lead to fluid leakage and contamination of clothing, increasing the risk of cross-infection. It also cannot directly monitor the amount and characteristics of the drainage fluid, which is not conducive to medical staff's timely assessment of changes in the patient's condition. Summary of the Invention

[0004] In view of the problems raised in the background art above, the purpose of the present invention is to provide a postoperative incision negative pressure suction device.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A postoperative incision negative pressure suction device includes an abdominal binder, on which a negative pressure mechanism and a reservoir bottle are hung. The negative pressure end of the negative pressure mechanism is connected to the reservoir bottle, and the reservoir bottle is connected to a drainage sponge.

[0006] Furthermore, the abdominal binder is equipped with an adjustable tightness adjustment structure, and the abdominal binder is equipped with a visual mark for indicating the tightness level, which can be adapted to people of different body types for use, and the visual mark can quickly determine the fixed position.

[0007] Furthermore, the inner contact surface of the abdominal belt is padded to enhance the wearing experience.

[0008] Furthermore, the negative pressure mechanism is the Sman Peak JXD-Portable Aspirator, which can be directly purchased mechanically and is easy to produce and use.

[0009] Furthermore, the edge of the drainage sponge is provided with an integrally formed leak-proof fixing part. The leak-proof fixing part is designed like a suction cup. The leak-proof design ensures that it can be completely absorbed by the drainage sponge, and the suction cup design ensures stable installation.

[0010] Furthermore, the liquid storage bottle is equipped with a transparent scale display port on its side, which allows for a direct view of the internal liquid volume, enabling real-time replacement.

[0011] Furthermore, the negative pressure mechanism is a battery-driven mechanism with adjustable negative pressure intensity. Battery driving enables convenient power replacement and ensures a continuous power supply. The adjustable negative pressure intensity can adjust the intensity according to the patient's needs, ensuring a comfortable user experience.

[0012] Further defined, the liquid storage bottle includes a cap and a bottle body, the bottle body is threadedly connected to the cap, a sealing ring is provided at the threaded connection between the bottle body and the cap, multiple connector tubes are connected to the top of the cap, and plug caps are fitted on the connector tubes, allowing the liquid inside the bottle to be removed as a test sample by disassembly, and the sealing ring ensures the sealing effect after assembly.

[0013] Furthermore, a flexible tube is connected between the negative pressure mechanism and the liquid storage bottle, and between the liquid storage bottle and the drainage sponge. The two ends of the flexible tube are connected by quick-connect fittings. The flexible tube is designed to adapt to different bending requirements, and the quick-connect fittings facilitate the replacement of flexible tubes of different lengths for use.

[0014] Furthermore, a filter disc is installed at the connection end between the drainage sponge and the hose to prevent non-liquid-forming objects from entering the hose.

[0015] The beneficial effects of using the present invention are as follows: This invention uses a negative pressure mechanism to deliver incision fluid through a drainage sponge into a storage bottle for storage, achieving both fluid treatment and sample acquisition. The overall structure is reasonable and conducive to production and manufacturing. The present invention has excellent fit and comfort. The abdominal binder can be adapted to patients of different body types through an adjustable tightness structure and visual markings. The soft pad on the inner contact surface reduces the feeling of pressure when wearing it. At the same time, the visual markings make it easy to quickly determine the fixation position and reduce the difficulty of operation. The present invention has good drainage stability and sealing performance. The suction cup-like anti-leakage fixing part of the drainage sponge ensures stable installation and leak prevention. The sealing ring at the threaded connection of the liquid storage bottle enhances the sealing effect. The filter plate can prevent non-liquid objects from clogging the hose, ensuring a smooth and reliable drainage process. The invention is easy to use and maintain. The portable negative pressure mechanism supports battery drive and negative pressure intensity adjustment, adapting to different usage scenarios and patient needs. The transparent scale display port of the reservoir bottle makes it easy to observe the fluid volume in real time. The threaded connection design and quick-connect hose facilitate fluid treatment, sampling and testing, and component replacement, reducing nursing workload. Attached Figure Description

[0016] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of an embodiment of a postoperative incision negative pressure suction device according to the present invention; The symbols for the main components are explained below: 1. Abdominal binder; 2. Negative pressure mechanism; 3. Storage bottle; 4. Drainage sponge; 5. Soft pad; 6. Leak-proof fixing part; 7. Transparent scale display port; 8. Tube; 31. Cap; 32. Bottle body; 33. Connector tube; 34. Plug cap. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, a postoperative incision negative pressure suction device of the present invention includes an abdominal binder 1, on which a negative pressure mechanism 2 and a liquid storage bottle 3 are hung. The negative pressure end of the negative pressure mechanism 2 is connected to the liquid storage bottle 3, and the liquid storage bottle 3 is connected to a drainage sponge 4.

[0019] In this implementation case, when using a postoperative incision negative pressure suction device, the abdominal binder 1 is made of medical breathable fabric. The negative pressure mechanism 2 is detachably fixed to the abdominal binder 1 by buckles, or it can be hung like the relationship between a belt and a key ring in the prior art. The hanging of the reservoir bottle 3 is the same as that of the negative pressure mechanism 2. The negative pressure output end of the negative pressure mechanism 2 is connected to the air inlet at the top of the reservoir bottle 3 through a medical sealed pipeline. The liquid outlet at the bottom of the reservoir bottle 3 is connected to the central drainage hole of the drainage sponge 4 through the same sealed pipeline. The size of the drainage sponge 4 is adapted to the range of common postoperative incisions. The abdominal binder 1 has mutually cooperating fixing structures at both ends to achieve circumferential fixation. After the negative pressure mechanism 2 is activated, it generates a continuous and stable negative pressure suction, which creates a negative pressure environment inside the storage bottle 3. This negative pressure is transmitted to the drainage sponge 4 through the pipeline. When the drainage sponge 4 is closely attached to the surface of the postoperative incision, its porous structure absorbs the accumulated fluid, oozing blood and tissue secretions at the incision site. Under the action of negative pressure, the secretions flow continuously into the storage bottle 3 through the drainage hole and pipeline for storage, forming a complete drainage process of "negative pressure generation - secretion absorption - directional delivery - centralized storage". In summary, the overall structure is highly integrated, with all components supported by the abdominal band 1, eliminating the need for additional support devices and not affecting the patient's daily activities; the negative pressure drainage path is short and reliably sealed, which can quickly drain incision secretions, reduce bacterial growth, and lower the risk of infection. At the same time, it simplifies the assembly process of the drainage system, making it easy for medical staff to deploy and operate it quickly.

[0020] Preferably, the abdominal binder 1 has an adjustable tightness adjustment structure, and the abdominal binder 1 has a visual mark for indicating the tightness.

[0021] In this implementation case, the elasticity adjustment structure of the abdominal belt 1 adopts an adjustment belt design, or even a leather belt can be used instead. The adjustable elasticity adjustment structure is regarded as a belt buckle, or it can be adjusted by Velcro or other structures. For example, one end of the abdominal belt 1 is sewn with a long strip of Velcro, and the other end is fixed with a retractable adjustment belt with Velcro hooks. The length of the adjustment belt is adapted to different waist sizes. The visual markings are set as scale lines and corresponding numerical marks printed along the length of the adjustment belt. The minimum division of the scale line is 1cm, and the numerical marks start from 0 and increase. Red marking lines are set at the corresponding scales in the commonly used waist range, such as 60-120cm. To meet the needs of patients with different body types, the adjustable strap has a travel range of 0-30cm, and the effective adhesive width of the Velcro is not less than 5cm to ensure the fixation strength. The scale lines of the visual markings are printed with abrasion-resistant ink, and the marking area is covered with a transparent waterproof film to avoid wear or liquid contamination during use. At the same time, the red marking lines can quickly guide medical staff to locate the appropriate fixation position. It can flexibly adapt to the waist circumference needs of patients with different body types, avoiding the abdominal binder 1 being too loose, which would cause the drainage sponge 4 to not fit properly, or being too tight and compressing the abdominal tissue; the visual markings allow medical staff to quickly determine the fixed position without repeated adjustments, improving operational efficiency, and at the same time facilitating the accurate restoration of the fixation tightness during subsequent follow-up examinations, ensuring the consistency of the drainage effect.

[0022] The inner contact surface of the preferred abdominal binder 1 is provided with a soft pad 5.

[0023] In this implementation case, the inner contact surface of the abdominal binder 1, that is, the side that is in contact with the patient's skin, is covered with a soft pad 5, which is either pasted or integrally formed. The soft pad 5 is made of medical silicone material, and its shape is perfectly adapted to the inner surface of the abdominal binder 1. The edges are rounded to avoid scratching the skin. The surface of the soft pad 5 has evenly distributed air pores with a pore diameter of 1 to 2 mm and a pore spacing of 5 mm, forming a honeycomb air ventilated structure. Based on the need for optimized wearing comfort, the soft pad 5 is made of soft silicone with a Shore hardness of 30-40°, which ensures both support and conforms to the contours of the skin, reducing local pressure; the depth of the ventilation holes extends through the entire thickness of the soft pad 5, and there is an annular groove on the side of the soft pad 5 that fits against the abdominal band 1, so that the ventilation holes and the breathable fabric of the abdominal band 1 form a communication channel to enhance air circulation; the soft pad 5 can be separated from the abdominal band 1 through the detachable design, making it easy to clean and disinfect separately; It can effectively cushion the pressure of the abdominal binder on the abdominal skin, avoiding local tenderness and redness caused by prolonged wear, and is especially suitable for patients with sensitive abdomen after surgery; the breathable structure ensures air circulation between the skin and the outside world, reduces sweat accumulation, keeps the skin dry and clean, reduces the risk of skin allergies or inflammation, and improves the overall wearing experience.

[0024] The preferred negative pressure mechanism 2 is the Sman Peak JX820D-1 portable suction device.

[0025] In this implementation case, the Sman Peak JX820D-1 portable suction device serves as the negative pressure mechanism 2, which is fixed by the abdominal binder 1, allowing the negative pressure mechanism 2 to fit snugly against the surface of the abdominal binder 1. The negative pressure output port of the negative pressure mechanism 2 is connected to the connecting pipeline through a standard medical Luer connector. A sealing ring is provided at the connector to ensure a sealing effect. The power switch and working indicator light of the negative pressure mechanism 2 are exposed on the outside for easy operation and observation of the working status. Based on the structural characteristics of this model of negative pressure mechanism 2, the fixed position of the strap is designed in the area where the center of gravity of the negative pressure mechanism 2 is located to prevent the negative pressure mechanism 2 from shaking when worn; the length of the connecting tube is adapted to the installation distance between the negative pressure mechanism 2 and the liquid storage bottle 3, and the Luer connectors at both ends of the tube are designed to prevent falling off and are locked by rotation after insertion; the inner side of the hanging bag of the abdominal binder 1 is equipped with a shock-absorbing pad to reduce the vibration of the negative pressure mechanism 2 during operation from being transmitted to the patient's body; The Sman Peak JX820D-1 suction device is a mature mass-produced product with convenient procurement channels, requiring no additional customized development, thus reducing the production and R&D costs of the device. The negative pressure stability and reliability of the negative pressure mechanism 2 of this model have been verified by the market, ensuring the continuous effectiveness of the drainage process. At the same time, its portable design is highly compatible with the integration requirements of the abdominal belt 1, enhancing the practicality and promotion of the device.

[0026] The edge of the preferred drainage sponge 4 is provided with an integrally molded anti-leakage fixing part 6, which has a suction cup-like design.

[0027] In this implementation case, the drainage sponge 4 is made of medical polyurethane foam, and its edge is integrally formed with an annular anti-leakage fixing part 6 through a molding process; the suction cup-like design is specifically manifested in that the inner side of the anti-leakage fixing part 6, that is, the side that fits the skin, is provided with an annular groove, forming a sealed cavity structure similar to a suction cup. The material of the anti-leakage fixing part 6 is the same as that of the main body of the drainage sponge 4 or is made of soft rubber to maintain soft and fitting characteristics. To optimize the leak prevention and fixation effect, the cross-section of the annular groove is designed as U-shaped, and the inner edge of the groove is chamfered to avoid scratching the skin; the outer diameter of the leak prevention fixation part 6 is slightly larger than the outer diameter of the main body of the drainage sponge 4, so that the leak prevention fixation part 6 can completely cover the skin area around the incision. The surface of the leak prevention fixation part 6 has a dense structure to reduce the risk of liquid leakage from the edge. Furthermore, medical tape can be used for auxiliary adhesion and sealing. The suction cup-like anti-leakage fixing part 6 can closely fit the skin surface to form a ring-shaped sealing band, effectively preventing the accumulated fluid from leaking from the edge of the drainage sponge 4 to the skin surface during drainage, thus avoiding contamination of the incision. At the same time, the suction cup structure enhances the installation stability of the drainage sponge 4 through skin adhesion, preventing the drainage sponge 4 from shifting when the patient moves, ensuring that the drainage sponge 4 always covers the incision area, and improving the drainage effect.

[0028] The preferred liquid storage bottle 3 has a transparent scale display port 7 on its side.

[0029] In this embodiment, the liquid storage bottle 3 is made of medical transparent polypropylene material. A transparent scale display port 7 extending vertically is provided in the middle of its side. The length of the transparent scale display port 7 covers 0 to 100% of the capacity of the liquid storage bottle 3. The scale markings are directly printed on the inside of the transparent scale display port 7, using black scratch-resistant ink. The scale range is 0 to 500 ml. There are thick red scale lines at the half-full and full liquid warning positions. Furthermore, based on the optimization of the convenience of liquid accumulation observation, the surface of the transparent scale display port 7 is treated with anti-fog to avoid fogging caused by internal and external temperature differences affecting observation; the scale markings adopt a reverse printing process, that is, the ink is printed on the inside of the liquid storage bottle 3 to prevent wear during use; the overall shape of the liquid storage bottle 3 is designed as a cylinder to facilitate accurate scale calibration, while the outside of the bottle body is provided with anti-slip texture for easy grip. Medical staff can visually observe the volume of fluid in the reservoir bottle 3 through the transparent scale display port 7, and determine whether the reservoir bottle 3 needs to be replaced without disassembling the tubing, making the operation convenient. The clear scale markings and warning lines can remind you to deal with the fluid accumulation in time, avoid the risk of backflow due to excessive fluid accumulation, and facilitate the recording of the drainage volume, providing data support for postoperative condition assessment.

[0030] The preferred negative pressure mechanism 2 is a battery-driven negative pressure mechanism 2 with adjustable negative pressure intensity.

[0031] In this embodiment, the negative pressure mechanism 2 has a built-in rechargeable lithium battery pack with a capacity of 2000-3000mAh. The outer side of the abdominal belt 1 is equipped with a matching charging interface with a waterproof and dustproof plug. The negative pressure intensity adjustment function is realized by a rotating knob on the surface of the negative pressure mechanism 2. Furthermore, the knob has 0-5 adjustment levels, corresponding to a negative pressure range of -10kPa to -60kPa, with a negative pressure difference of 10kPa between each level. The knob surface is equipped with anti-slip texture and level markings. Furthermore, the battery pack is detachable, making it easy to charge individually or replace with a spare battery to ensure continuous power supply; the negative pressure mechanism 2 has a built-in power detection module, which displays the remaining power through LED indicator lights to prevent sudden power outages from affecting the flow; limit structures are set at the highest and lowest gears to prevent the knob from being over-rotated and causing malfunctions, and a damping feel is provided during adjustment to facilitate precise gear positioning; The battery-powered design frees the device from the constraints of a power cord, allowing patients to move freely and increasing flexibility in use. The negative pressure intensity can be flexibly adjusted according to the patient's incision condition and tolerance, avoiding excessive negative pressure that may cause incision pain or tissue damage, or insufficient negative pressure that may affect the drainage effect. It balances drainage efficiency and user comfort, adapting to the individual needs of different patients.

[0032] The preferred liquid storage bottle 3 includes a cap 31 and a bottle body 32. The bottle body 32 is threaded to the cap 31. A sealing ring is provided at the threaded connection between the bottle body 32 and the cap 31. Multiple connector tubes 33 are connected to the top of the cap 31. The connector tubes 33 are fitted with stopper caps 34.

[0033] In this embodiment, both the cap 31 and the bottle body 32 of the liquid storage bottle 3 are made of medical-grade polypropylene. The bottle body 32 has external threads on the outside of the bottle opening, and the cap 31 has matching internal threads on the inside to ensure a tight connection. The sealing ring is made of medical-grade nitrile rubber, is annular, and is embedded in the inner groove of the cap 31. The groove depth is the same as the thickness of the sealing ring to ensure that the sealing ring fits tightly against the bottle opening end face of the bottle body 32 after assembly. At least three connector tubes 33 are evenly distributed on the top of the cap 31, and each connector tube 33 is matched with a rubber stopper cap 34. The stopper cap 34 is connected to the cap 31 by an elastic hanging rope. Furthermore, the connector tube 33 is equipped with a one-way valve structure inside to prevent liquid backflow. One connector tube 33 is specifically used to connect to the negative pressure mechanism 2, and the other two are spare interfaces that can be connected to additional drainage sponges 4 as needed to achieve simultaneous drainage through multiple incisions. The top of the cap 31 is provided with a rotatable protrusion structure to facilitate the disassembly and assembly of the cap 31 and the bottle 32. The outer side of the sealing ring is provided with an annular positioning groove that cooperates with the protrusion structure of the groove in the cap 31 to prevent the sealing ring from shifting. Its threaded connection makes it easy to disassemble the cap 31 and the bottle 32, making it convenient to take out the liquid sample in the bottle 32 for testing, or to pour out the liquid and clean the storage bottle 3; the sealing ring ensures the sealing performance of the storage bottle 3 and avoids negative pressure leakage from affecting the drainage effect; the multi-connector tube 33 design increases the versatility of the device and can be adapted to single-cut or multi-cut drainage needs; the spare interface is sealed by the plug cap 34 to ensure the sealing when not in use and improve the applicability of the device.

[0034] Preferably, a flexible hose 8 is connected between the negative pressure mechanism 2 and the liquid storage bottle 3, and between the liquid storage bottle 3 and the drainage sponge 4, with quick-connect fittings at both ends of the flexible hose 8.

[0035] In this implementation case, the flexible tube 8 connecting the negative pressure mechanism 2 to the liquid storage bottle 3 and the liquid storage bottle 3 to the drainage sponge 4 is made of medical PVC material. The inner diameter of the flexible tube 8 is 6mm, the outer diameter is 10mm, and the length can be selected from 30 to 50cm according to the installation spacing. Both ends of the flexible tube 8 are fixedly connected to standard medical quick-connect connectors. The connectors are made of medical ABS plastic. The insertion end of the connector has a ring barb structure, which is interference fit with the corresponding interface. After insertion, the barb structure achieves self-locking fixation. Furthermore, the hose 8 has an anti-wrinkle structure, and the inner wall of the hose 8 is provided with spiral support ribs to prevent the tube from becoming blocked when bent; the quick-connect fitting has an annular protrusion on the outside for easy insertion and removal, making it convenient to hold when replacing the hose 8; the connection between the fitting and the hose 8 is fixed by a hot-melt welding process to prevent it from falling off, and the fitting has a sealing ring inside to enhance the sealing performance after connection; various lengths of hose 8 are available to fit different patient body shapes and installation needs; Its flexible design allows it to adapt to different bending angles without affecting patient movement, while avoiding drainage interruption caused by tubing bends. The quick-connect fitting allows for tool-free assembly and disassembly, facilitating quick replacement of the tubing 8 or adjustment of the tubing layout, resulting in high operational efficiency. The barbed structure and sealing ring ensure the stability and sealing of the connection, preventing negative pressure leakage or fluid accumulation and improving the reliability of the device.

[0036] A filter disc is preferably installed at the connection end of the drainage sponge 4 and the hose 8.

[0037] In this embodiment, a filter plate is installed at the connection end of the drainage sponge 4 and the tubing 8. The filter plate is made of medical stainless steel, is circular, and its diameter matches the inner diameter of the tubing 8. The thickness is 1-2 mm. The surface of the filter plate has filter holes evenly distributed, with a pore diameter of 0.05-0.1 mm. The filter plate is fixed to the end of the central drainage hole of the drainage sponge 4 by a snap-fit ​​structure and fits tightly with the connector end face of the tubing 8. Furthermore, the filter disc has an annular sealing gasket at its edge, made of medical-grade silicone, to ensure a tight seal between the filter disc and the drainage sponge 4 and hose 8 connectors, preventing leakage of accumulated liquid from gaps. The filter disc features a detachable design with a snap-fit ​​structure for easy regular disassembly, cleaning, or replacement, preventing clogging of the filter holes from affecting drainage. The stainless steel material of the filter disc undergoes passivation treatment to improve corrosion resistance and biocompatibility, preventing chemical reactions with accumulated liquid. It can effectively block non-fluid objects such as blood clots and tissue fragments from entering the tubing 8 at the incision site, preventing the tubing from becoming blocked and causing drainage interruption, thus ensuring a smooth drainage process. The detachable design facilitates maintenance and cleaning, avoids bacterial growth on the filter plate after long-term use, reduces the risk of infection, and the stainless steel material is safe and reliable, will not cause secondary harm to the patient, and improves the safety of the device.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A postoperative incision negative pressure suction device, comprising an abdominal binder (1), characterized in that: The abdominal band (1) is equipped with a negative pressure mechanism (2) and a liquid storage bottle (3). The negative pressure end of the negative pressure mechanism (2) is connected to the liquid storage bottle (3), and the liquid storage bottle (3) is connected to a drainage sponge (4).

2. The postoperative incision negative pressure suction device according to claim 1, characterized in that: The abdominal band (1) is provided with an adjustable tightness adjustment structure, and the abdominal band (1) is provided with a visual mark for indicating the tightness.

3. The postoperative incision negative pressure suction device according to claim 1, characterized in that: The inner contact surface of the abdominal band (1) is provided with a pad (5).

4. The postoperative incision negative pressure suction device according to claim 1, characterized in that: The negative pressure mechanism (2) is the Sman Peak JX820D-1 portable suction device.

5. A postoperative incision negative pressure suction device according to claim 1, characterized in that: The edge of the drainage sponge (4) is provided with an integrally formed anti-leakage fixing part (6), which is designed like a suction cup.

6. The postoperative incision negative pressure suction device according to claim 1, characterized in that: The liquid storage bottle (3) has a transparent scale display port (7) on its side.

7. A postoperative incision negative pressure suction device according to claim 1, characterized in that: The negative pressure mechanism (2) is a battery-driven negative pressure mechanism (2) with adjustable negative pressure intensity.

8. A postoperative incision negative pressure suction device according to claim 1, characterized in that: The liquid storage bottle (3) includes a cap (31) and a bottle body (32). The bottle body (32) is threaded to the cap (31). A sealing ring is provided at the threaded connection between the bottle body (32) and the cap (31). Multiple connector tubes (33) are connected to the top of the cap (31). A stopper cap (34) is installed on the connector tube (33).

9. A postoperative incision negative pressure suction device according to claim 1, characterized in that: A flexible tube (8) is connected between the negative pressure mechanism (2) and the liquid storage bottle (3), and between the liquid storage bottle (3) and the drainage sponge (4). The two ends of the flexible tube (8) are connected by quick-connect fittings.

10. A postoperative incision negative pressure suction device according to claim 9, characterized in that: A filter disc is installed at the connection end of the drainage sponge (4) and the hose (8).

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