66 results about "Wound drainage" patented technology

The present invention provides a sensitive, accurate, bioactive skin barrier / wafer usable in ostomy systems and wound drainage collectors for identification of pathogens at critical thresholds of presence on peristomal skin at stoma sites and exuding wounds before clinical signs and symptoms of infection present. A method of fabricating a bioactive skin barrier / wafer intended for identification of pathogen presence in ostomy systems is provided, that delivers a rapid response observable alert. The present invention utilizes biomarkers to detect pathogens in real time, where biomarkers are characteristics objectively measured as indicators of health, disease, or a response to an exposure or intervention, including therapeutic interventions.

The utility model discloses a negative pressure drainage dressing system, which is suitable for drainage of a large area of ​​wounds and solves the problem that when draining a large area of ​​wounds, the drainage effect is poor at a position far away from the drainage tube orifice; a negative pressure drainage dressing system, wherein the tube body of the drainage tube is a hollow tubular structure, a plurality of drainage holes are arranged on the side surface of the tube body, and a spiral drainage part is arranged inside the tube body for guiding and accelerating the flow of liquid; the pitch of the end of the spiral drainage part far away from the negative pressure source is smaller than the pitch of the end close to the negative pressure source; the drainage hole is a special-shaped drainage hole, which is formed by connecting an inner drainage port and an outer drainage port, and the size of the inner drainage port is smaller than the size of the outer drainage port, and is a similar elliptical shape, at which time the inner drainage port and the outer drainage port are connected to form a guide surface for guiding liquid to quickly enter the drainage tube; the drainage tube is embedded in the dressing to form a dressing system.

The utility model discloses a wound drainage liquid negative pressure sterile collecting cup, which comprises a cup body, a suction pipe, a plugging assembly and a suction assembly, a communicating pipe is fixedly arranged at one end of the cup body, a sleeve is communicated with one end of the suction pipe, the sleeve is sleeved on the outer side of the communicating pipe, the plugging assembly is arranged in the sleeve and is used for plugging one end of the communicating pipe, and the suction assembly is used for sucking the suction pipe. According to the drainage device, the cup body, the suction pipe, the plugging assembly and the suction assembly are additionally arranged, so that a user can conveniently collect, store and transport drainage liquid at the wound, the drainage liquid can be conveniently sucked into the cup body, and the drainage device is convenient to use. The drainage liquid collection device is simple in structure and convenient to use, pollution caused by drainage liquid collection in a traditional mode is avoided, the accuracy of drainage liquid detection can be effectively improved, the safety of drainage liquid collection is effectively improved, the drainage liquid collection device can be conveniently opened for sampling during detection, and the use convenience of workers is improved.

The invention relates to the technical field of wound drainage devices, in particular to a pressure-adjustable wound drainage device used after breast surgery, which comprises a drainage bottle used for providing negative pressure and a drainage tube with one end communicated with the inside of the drainage bottle, the drainage bottle is provided with an exhaust port, and the drainage bottle at least comprises a compressible part. A first hard plate and a second hard plate opposite to the first hard plate are arranged on the compressible part, the compression direction of the compressible part is the direction in which the first hard plate and the second hard plate are close to each other, and an expansion auxiliary part is further arranged between the first hard plate and the second hard plate. The expansion auxiliary part assists expansion of the compressible part by pushing the first hard plate and the second hard plate to be far away from each other, so that negative pressure power is provided, an existing drainage bottle is transformed, the negative pressure generated by the existing drainage bottle can be adjusted, and the better drainage effect on the existing postoperative breast cancer is achieved.

The utility model discloses a wound drainage tube dressing abdominal belt, which specifically relates to the technical field of dressing abdominal belts, including a dressing abdominal belt including a fixing belt and a dressing part, the fixing belt being adapted to patients with different waist circumferences, the fixing belt passing through the dressing part, the dressing part and the fixing belt being detachable, the dressing part being provided with a placement groove, and the drainage tube being placed inside the placement groove. The fixing belt is elastic. A positioning buckle is provided on one side of the fixing belt, the positioning buckle is button-shaped and is wide at the top and narrow at the bottom, and a plurality of buckle holes are provided on the other side of the fixing belt, and the lower outer diameter of the positioning buckle is adapted to the inner diameter of the buckle hole. The dressing part and the fixing belt of the utility model are detachable, so that the dressing part is easy to clean.

The invention provides a small negative pressure device for postoperative wound drainage of a bromhidrosis patient, and belongs to the technical field of negative pressure drainage. Comprising an injector body, an outer protective shell is clamped to the outer surface of the injector body, and a connecting ring is fixedly connected to the middle of the outer protective shell; the auxiliary negative pressure assembly is used for improving the comfort and the convenience of holding when a doctor performs suction operation, and the auxiliary negative pressure assembly is connected with the injector main body. The auxiliary negative pressure assembly is arranged, the injector body is fixed in the auxiliary negative pressure assembly, during suction operation, a doctor presses an arc-shaped button on the auxiliary negative pressure assembly, so that a push rod can be automatically pulled backwards, a negative pressure space is generated in the injector body, the difficulty of the doctor during suction operation is reduced, and the suction efficiency of the doctor is improved. The holding effect of a doctor on the injector in the tissue fluid adsorption process is improved, and the adsorption effect is ensured.

The invention relates to the technical field of medical instruments, and discloses a passive portable negative-pressure wound drainage device based on air chemical absorption reaction, which comprises a negative-pressure drainage wound protection assembly, a negative-pressure wound treatment device and a connecting assembly, the negative-pressure drainage wound protection assembly comprises a medical film, a negative-pressure drainage dressing, a sucker and a drainage tube, the negative pressure drainage dressing covers a wound, and the medical pasting film covers the negative pressure drainage dressing and the surface of skin around the wound. The passive portable negative-pressure wound drainage device based on the air chemical absorption reaction is composed of the negative-pressure drainage wound protection assembly, the negative-pressure wound treatment device and the connecting assembly, a motor and a battery of traditional electric equipment are not needed, a hanging belt in the connecting assembly can form a space for human limbs or clothes to penetrate through, a clamp can be fixed to the clothes, and the negative-pressure wound treatment device is convenient to use. The whole body gets rid of dependence on electric power, the weight is greatly reduced, a patient can carry the device flexibly and conveniently, activity constraint is reduced, and the device can adapt to the field.

Devices and methods for managing chest or wound drainage includes a chest tube configured for insertion within a body, a drainage tube coupled with the chest tube, a reservoir coupled with the drainage tube, a pump coupled with the reservoir, and a controller in communication with the reservoir. The controller determines air leak flow rate when air is evacuated from the body and the controller determines a readiness for chest tube removal if two or more removal parameters are satisfied including: (i) the air leak flow rate is above a first threshold air leak flow rate, (ii) an average of the air leak flow rate is maintained above a second threshold air leak flow rate over a period of time, (iii) the air leak flow rate is maintained below a maximum air leak flow rate over a second period of time.

The utility model relates to the technical field of drainage devices, and discloses a negative pressure wound drainage device which comprises a drainage bottle, a bottle opening is formed in one end of the drainage bottle, a bottle cap is arranged at the top of the bottle opening, a first hose fixedly penetrates through the top of the bottle cap, and a mounting shell is arranged at one end of the first hose. A drainage hole is formed in one side of the mounting shell, a groove is formed in the mounting shell, a mounting frame is movably connected to the inner side wall of the groove, and a U-shaped block is fixedly connected to one side of the mounting frame. According to the negative-pressure wound drainage apparatus, through the arrangement of the mounting frame, the U-shaped block, the push rod, the clamping block, a limiting rod and a spring, when a worker uses the negative-pressure wound drainage apparatus, the push rod is firstly pressed to move under the limiting of the limiting rod, meanwhile, the spring is pressed, the clamping block is driven to move, and after the clamping block completely moves out of a clamping groove, the mounting frame can be pulled; and therefore, the mounting frame is detached, and the effect of replacing the device is achieved.

The utility model relates to the technical field of medical instruments, and discloses a wound surface drainage device which comprises a negative pressure drainage device and a drainage head, an installation base is arranged on the right side wall of the negative pressure drainage device, a circular groove is formed in the top of the installation base, a liquid accumulation tank is arranged over the circular groove, and the drainage head is arranged in the liquid accumulation tank. A positioning cylinder is connected to the bottom of the liquid accumulation tank, the liquid accumulation tank is inserted into a circular groove in the top of the mounting base through the positioning cylinder at the bottom, a negative pressure pipe is connected to the upper left end of the liquid accumulation tank, a connecting pipe is arranged on the right side of the negative pressure drainage device and located on the front side of the liquid accumulation tank, one end of the negative pressure pipe is communicated with the connecting pipe, and the other end of the negative pressure pipe is communicated with the mounting base. One end of the drainage tube is connected with the drainage head, and a sealing film is arranged on the periphery of the outer side of the drainage head. By arranging the mounting base, the circular groove and the positioning cylinder and utilizing the mutual matching effect among the mounting base, the circular groove and the positioning cylinder, the liquid accumulation tank can be quickly replaced, the working efficiency is improved, and the use is convenient.

The utility model discloses a negative pressure wound drainage device, and relates to the technical field of wound drainage. The drainage device comprises a drainage tube, a syringe is arranged at the end of the drainage tube, an extraction mechanism for extracting seepage is arranged in the syringe, a protective sleeve is slidably connected to the outside of the drainage tube, a mounting plate is arranged on the protective sleeve, and a holding mechanism is arranged between the mounting plate and the protective sleeve. And a storage mechanism for storing seepage is arranged on the syringe. The special extraction mechanism is arranged in the syringe, so that seepage extraction is more convenient and efficient; the arrangement of the mounting plate and the holding mechanism can ensure that the drainage tube is stably placed at the wound of the patient, so that the poor drainage effect or discomfort caused by the movement of the drainage tube is avoided; and the storage mechanism on the syringe can conveniently store the seepage, so that the seepage is prevented from overflowing or causing environmental pollution, and meanwhile, the seepage amount is also conveniently monitored and managed.

The utility model discloses a novel general surgery department wound drainage device, which belongs to the technical field of medical supplies and is technically characterized by comprising a ball body, a connector is fixed at the top of the ball body through threads, a connecting hose is adhered to the top of the connector, a fixing head is adhered to the other end of the connecting hose, and an intubation tube is integrally formed at the bottom of the fixing head. The drainage tube fixing device comprises a fixing head and a cannula, the fixing head is provided with a connecting tube, the cannula can be inserted into another connecting tube of a drainage tube located in the body, at least one annular groove is formed in the outer wall of the circumference of the cannula, and a rubber ring is connected in the annular groove in a sleeved mode. The drainage tube fixing device has the advantages that the fixing head is held by hand, the cannula is inserted into the connecting tube of the drainage tube located in the body, and the cannula is fixed in an auxiliary mode through the rubber ring. And the intubation tube and the connecting tube are both made of hard materials, so that insertion is facilitated, the situation that the soft drainage tube is bent during insertion and cannot apply force is avoided, and the replacement efficiency of the device is improved.

The utility model discloses a kind of fixed dressings for wound drainage, it is related to the technical field of medical supplies, it includes dressing, the mouth of opening is set in dressing side;Overturning covering surface, it is set in dressing, it can overturn and cover mouth, the mouth is set in the center of dressing side, the side of the mouth is all made edge treatment, the overturning covering surface includes the first fabric of setting in the side of dressing, one end of the first fabric near the mouth is provided with second fabric, mouth is clamped on drainage tube, then overturn first fabric, then overturn second fabric, then second fabric is laid on dressing, whereby drainage tube is arranged in the center of dressing, finally using adhesive tape to stick dressing can, by the structure design, so the assembly of drainage tube and skin place dressing can be completed, and the interference of dressing to drainage tube can be reduced, and the flatness of dressing can also be guaranteed.

A wound draining pump system that prevents the cross contamination of a patient's wound and that allows the patient's wound and incision to heal faster. The wound drainage pump system comprises a rigid rectangular cartridge holder. A collapsible tank that has a negative pressure suction pump front end, the collapsible tank inserts within the rectangular cartridge holder. A surgical grade tube that connects to the negative pressure suction pump and to an absorption tip. The absorption tip is placed on the wound of the patient. And, an adhesive holder that secures the absorption tip on the wound of the patient.

1. The name of the design product: negative pressure wound therapy instrument. 2. The use of the design product: the design product is mainly used to produce controllable negative pressure for wound drainage and provide pulse directional electric field for wound surface, relieve local pain and promote wound healing. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to the technical field of medical instruments, in particular to an ostomy bag which comprises a main bag body, an outer clamping ring is fixedly connected to a port of the upper portion of the main bag body, a partition piece is fixedly connected to the interior of the main bag body and used for dividing an inner cavity of the main bag body into an upper layer and a lower layer, and a plurality of partition piece side holes are evenly formed in the partition piece. The middle of the partition piece penetrates through and is fixedly connected with an internal connecting pipe, the upper side and the lower side of the internal connecting pipe are arranged in an upper-layer inner cavity and a lower-layer inner cavity of the main bag body respectively, the upper end of the internal connecting pipe is in butt joint with a drainage pipe, and a port of the lower portion of the main bag body is communicated with an external connecting pipe. The utility model provides an ostomy bag which is used for collecting exudate in gaps of a wound drainage tube of a patient after a clinical surgical operation, and drainage liquid and exudate at the wound can be collected at the same time. The drainage tube does not need to be subjected to secondary treatment, so that the risk of a secondary operation is avoided; the whole device is simple in structure and easy to produce and manufacture; and the operation process is simple and easy to quickly operate.

The present invention relates to the technical field of wound drainage, and specifically provides an auxiliary suction structure for cooling medium liquid. An auxiliary suction structure for cooling medium liquid, wherein an inner sleeve is provided on the outer wall of a surgical blade head, the inner sleeve comprises an inner sleeve fixing part and an inner sleeve water storage part, the inner sleeve fixing part fits the outer peripheral surface of a knife rod assembly, and a water storage cavity is provided between the inner wall of the inner sleeve water storage part and the surgical blade head. The inner sleeve is sleeved on the outside of a plasma surgical blade to increase the suction range of the cooling medium liquid of the plasma surgical blade and enhance the suction effect of the plasma surgical blade; the inner sleeve and the surgical blade head form a water storage cavity, which enables the cooling medium liquid to stay temporarily on the muscle surface and near the surgical blade head, making it easier for the plasma surgical blade to absorb the cooling medium liquid and fully utilize the cooling effect of the cooling medium liquid, thereby reducing the volume of the cooling medium liquid and reducing the interference of the cooling medium liquid on the surgical process.

The utility model provides a kind of for chronic wound leakage negative pressure drainage device, it is related to medical instrument technical field, including auxiliary bandage, protective shell, storage tank, suction pressure tank, pressure tank, rotating disc, connecting disc and connecting screw;The inside of connecting disc is equipped with a group of circular grooves, and the bottom of connecting disc is connected with nursing adhesive film, and the circular groove of the inside of connecting disc is connected with rotating disc bottom rotation snap fit;Two groups of circular thread connection holes are respectively arranged on the both sides connecting plate of the top of suction pressure tank. Set rotating disc, only need to connect device on wound through nursing adhesive film, rotating disc can rotate, so that people can also move at will when wearing. Set auxiliary bandage, device can be directly bound on body, increase portability. Set the controller outside protective shell, accurately control air pressure, make it adapt to different injury conditions, and replaceable storage tank.

The utility model discloses a pressure controllable wound drainage device which comprises a drainage tube and further comprises a negative pressure generator, a pressure adjusting device and a three-way valve, the pressure adjusting device is arranged in the negative pressure generator, and pressure generated in the negative pressure generator is controllably adjusted through the pressure adjusting device. One end of the three-way valve is detachably arranged on the negative pressure generator through threads, the other end of the three-way valve is connected with the drainage tube, and the tightness of the drainage tube on the three-way valve is adjustable. The drainage device has the advantages that the spiral connector on the three-way valve is connected with the air guide tube and the drainage tube, connection is tighter, meanwhile, different control effects can be conveniently achieved, a plastic exhaust port of an original drainage device is omitted, repeated pulling and inserting of the plastic exhaust port are avoided, the infection opportunity is reduced, iatrogenic cross infection is completely eradicated, and drainage liquid backflow during pressure adjustment is prevented; the pressure adjusting device is used for adjusting the internal pressure of the negative pressure generator, different pressures in the negative pressure generator are controlled through a multi-gear structure of the pressure adjusting device, and different suction effects are achieved.

Devices and methods for managing chest or wound drainage includes a chest tube configured for insertion within a body, a drainage tube coupled with the chest tube, a reservoir coupled with the drainage tube, a pump coupled with the reservoir, and a controller in communication with the reservoir. The controller determines air leak flow rate when air is evacuated from the body and the controller determines a readiness for chest tube removal if two or more removal parameters are satisfied including: (i) the air leak flow rate is above a first threshold air leak flow rate, (ii) an average of the air leak flow rate is maintained above a second threshold air leak flow rate over a period of time, (iii) the air leak flow rate is maintained below a maximum air leak flow rate over a second period of time.

The drainage strip for the eye surgery comprises a fixing part, a drainage part and a packaging bag, one end of the fixing part is in an arc shape, and the fixing part is used for being fixed to a wound. The drainage part is connected with the other end of the fixing part and is narrower than the fixing part. According to the working principle and the beneficial effects of the technical scheme, the drainage strip for the eye surgery is placed at the deepest position of a wound, can be fixed in the wound and is used for drainage of the wound, the width of the drainage part is smaller than that of the fixing part, it can be guaranteed that the fixing part is stably fixed, the proper drainage part is placed according to the depth of the wound, and the remaining drainage part naturally droops; therefore, blood and pus at the wound can be drained from the fixing part along with the drainage part, the drainage effect is improved, and wound recovery is facilitated.

This invention discloses a neck-chest fit adjustable anti-displacement thyroid surgery wound drainage care device, belonging to the field of medical device technology. It includes a neck brace, comprising a chest-fitting frame, a support beam, and a neck pad. The chest-fitting frame is suspended from the shoulders and extends to the front of the chest. The support beam is rotatably mounted on the upper surface of the chest-fitting frame and used to support the chin. This invention allows for simultaneous and precise adjustment of the support beam's rotation angle by adjusting the specific position of the rising section on the outer frame and the height of the inner lining strip within the outer frame. This effectively adapts to the individual differences in neck length and physiological curvature among different patients. After adjustment, the locking strip firmly engages with the corresponding T-slot, thus achieving flexible and reliable adjustment of the overall fit between the neck brace and the patient's neck and chest. This fundamentally avoids the problems of traditional fixation devices, which are often unable to adapt to different patient body shapes due to rigid structures, resulting in insufficient fit and easy displacement.

The utility model relates to the technical field of medical instruments, in particular to an affected limb braking and wound compression protection device which comprises a mesh breathable garment, supporting strips are fixedly connected to cuffs of the mesh breathable garment, fixing bands are arranged at armpits of the mesh breathable garment, buckles are arranged on the fixing bands, and the fixing bands are connected with the supporting strips. A pressing mechanism is fixedly connected to the lower portion of the outer surface of the fixing belt, a side opening is formed in the right side of the mesh breathable clothes, a hook-and-loop fastener hook face and a hook-and-loop fastener loop face are fixedly connected to the side opening, and a bearing pocket is fixedly connected to the front end of the mesh breathable clothes. According to the affected limb braking and wound compression protection device, the arms of a patient can be braked and attached to the chest wall at good positions, the purposes of braking and compression hemostasis to promote recovery can be achieved, braking execution is good, the retention time of a drainage tube can be effectively shortened, faster recovery can be promoted, armpit wounds can be effectively braked in a compression hemostasis mode, and the recovery efficiency is improved. Wound drainage liquid can be obviously reduced, and the occurrence rate of limb edema is reduced.

The invention discloses an intelligent control type negative pressure wound drainage device and method, and relates to the field of biomedical engineering, the intelligent control type negative pressure wound drainage device is negative pressure drainage equipment with a flushing function, the intelligent control type negative pressure wound drainage device comprises a negative pressure machine, a peristaltic pump for cleaning a wound is arranged on the outer surface of the negative pressure machine, and a connecting device is arranged on one side of the negative pressure machine; a drainage bottle is fixedly arranged at the movable end of the connecting device, a bottle cap is arranged on the top face of the drainage bottle, a sealing buckle used for locking the drainage bottle is arranged on the outer surface of the bottle cap, connectors are symmetrically arranged in the bottle cap in a penetrating mode and communicated with the interior of the bottle cap, drainage tubes are inserted into the outer surfaces of the connectors, and a drainage bag used for containing wound exudate is arranged on one side of the bottle cap. According to the drainage bottle, the sliding block moves up and down to drive the first connecting rod and the second connecting rod to push the supporting plate to make contact with the inner wall of the drainage bottle, the wall of the drainage bottle is evenly supported from multiple points in the drainage bottle, local stress is reduced, and breakage of the drainage bottle body is avoided.

The utility model provides a roller hemostasis anal catheter, and belongs to the field of medical instruments. The problems that a traditional hemostasis mode after rectum and anal canal diseases are operated is common in hemostasis effect, drainage of postoperative wound surfaces is not facilitated, anus ventilation is hindered, postoperative dressing change operation is inconvenient, and postoperative complications such as urinary retention are easily caused are solved. The anal catheter comprises an anal catheter body and a composite hemostatic layer, the anal catheter body is a hose, the composite hemostatic layer is arranged on the outer wall of the anal catheter body in a sleeving mode and comprises a loose expansion layer and a compact hemostatic layer, the loose expansion layer is arranged on the outer wall of the anal catheter body in a sleeving mode, and the compact hemostatic layer is arranged on the outer wall of the loose expansion layer. The compact hemostatic layer is arranged on the outer side of the loose expansion layer. The hemostat is mainly used for hemostasis of postoperative wounds of rectum and anal canal related diseases.

The utility model relates to a wound drainage tube periphery anti-reflux liquid collection device which comprises a liquid collection bag, a center round hole is formed in the top of the liquid collection bag and used for allowing a drainage tube to penetrate through, and a fixing assembly is arranged on the periphery of the center round hole and used for being pasted and fixed to the skin around a wound; the bottom of the liquid collecting bag is provided with a connector, the connector is provided with a valve, an anti-reflux assembly and a drainage tube tunnel are fixedly arranged in the liquid collecting bag, the liquid collecting bag is made of a transparent material, and the surface of the liquid collecting bag is provided with scale marks and a colorimetric card. The wound drainage tube has the advantages that seepage around the wound drainage tube is collected, and discomfort of a patient and workload of medical staff are relieved.

The utility model discloses an adhesive type back wound drainage tube fixator which comprises a flexible skin-attaching layer attached to the skin of the human body, an adhesive layer is arranged on the back face of the flexible skin-attaching layer, a fixator body adhered to the flexible skin-attaching layer is arranged on the front face of the flexible skin-attaching layer, two limiting strips are symmetrically arranged in the middle of the fixator body, and the two limiting strips are arranged on the back face of the flexible skin-attaching layer. A drainage tube is placed between the two limiting strips, and a thin film paste is arranged on the front face of the fixator body; according to the utility model, the condition that the drainage tube shifts or falls off when a patient turns over or moves is avoided; meanwhile, the color of liquid in the drainage tube can be conveniently observed by medical staff, and some judgment or some measures can be timely made.

The utility model provides a negative pressure drainage device, which belongs to the technical field of medical instruments for the hepatobiliary department, aims to solve the problem that the negative pressure adjustment is difficult to be manually adjusted to adapt to the body recovery state, and comprises a drainage piece, the drainage piece comprises a liquid accumulation bottle and a blanking cap, the blanking cap is in threaded connection to the bottom of the liquid accumulation bottle, and the liquid accumulation bottle is sleeved with a bracket; the negative pressure adjusting part comprises a fixing pipe and a piston rod, the piston rod is clamped in the fixing pipe, and the top end of the piston rod is fixedly connected with a connecting plate; and an adjusting rod is clamped in the connecting plate. After the knob plate is rotated, the adjusting rod is driven to rotate upwards and move, the connecting plate is driven by the two baffles to move upwards synchronously, the piston rod pulls the piston piece to move upwards to extract gas in the negative pressure bottle so as to increase the pressure difference of negative pressure, the pressure change after hydrops drainage or hydrops discharge is balanced, it is ensured that a user feels comfortable, pipe closing can be gradually adapted, and the operation is convenient. Therefore, rehabilitation is accelerated, and tube drawing time is shortened.

The invention provides a novel drainage device for breast surgery, and relates to the technical field of wound drainage, the novel drainage device comprises a drainage tube, a drainage bag, a suction mechanism and an adjusting assembly, one end of the drainage tube is sleeved with a drainage needle, the other end of the drainage tube is sleeved with the drainage bag, and the two sides of the drainage bag are provided with a turnover plate and a fixing plate respectively; the drainage bag is used for storing pathological liquid sucked in through drainage, an air suction pipeline is inserted into one end of the top of the drainage bag, and a hollow plate is installed at the tail end of the air suction pipeline. The force and the speed provided by suction can be flexibly controlled, and the damping generated during auxiliary suction can be adjusted and controlled in cooperation with an adjusting assembly; and in cooperation with a magnetic suction structure at the bottom of the drainage bag and a one-way locking structure in the suction mechanism, liquid backflow can be avoided, the liquid is prevented from entering an extraction structure at the rear end, and it is ensured that the suction mechanism can be repeatedly used.