278 results about "Drainage bags" patented technology

The utility model provides a urine discharging and collecting device for a diaper of a postoperative bedridden male child patient, which relates to the technical field of medical instruments and comprises a diaper, a waist opening formed in the top of the diaper, leg openings formed in two sides of the bottom of the diaper, a drainage bag arranged at the bottom of the diaper and a collecting component arranged between the diaper and the drainage bag. The urine collector is used for collecting urine discharged from the diaper. Urine can be effectively drained, discharged and collected through the collecting assembly, dryness and comfort of the diaper in the wearing process are kept, frequent replacement of the diaper is not needed, the nursing workload of a doctor is relieved, the psychological panic and nervous conditions of a bedridden child patient can be relieved, the comfort and acceptance of the child patient are improved, the child patient can be matched with the doctor for nursing treatment, and the nursing efficiency is improved. The firmness of installation between the silica gel drainage tube and the drainage bag can be improved through the anti-falling assembly, the situation that the silica gel drainage tube is loosened due to pulling is prevented, urine leakage is effectively prevented, and sanitation is kept.

The utility model relates to the technical field of medical devices, in particular to a uterine cavity indwelling drainage device which comprises a sacculus, a drainage tube, a filling tube and a drainage bag, the sacculus is roughly of an isosceles triangle structure with the wide upper portion and the narrow lower portion, and a conical through hole with the outer diameter gradually decreasing from top to bottom is formed in the middle of the sacculus. The top end of the drainage tube is communicated with the bottom end of the conical through hole, and the bottom end of the drainage tube is communicated with an input port in the middle of the top end of the drainage bag; the balloon is of a hollow structure, and a filling opening communicated with the top end of the filling pipe is formed in the left side of the bottom of the balloon. According to the utility model, the unfilled balloon and the drainage tube are fed into the uterine cavity, and then the balloon is filled through the filling tube to enable the balloon to be wider than the uterine cavity opening, so that the drainage device can be retained in the uterine cavity, and hydrops in the uterine cavity can be drained into the drainage bag through the conical through hole in the middle of the balloon and the drainage tube.

The invention discloses a drainage bag heat sealing device with a self-cleaning function, and relates to the technical field of heat sealing devices.The drainage bag heat sealing device with the self-cleaning function is characterized in that the heat sealing device comprises a base, a supporting piece, a hot pressing module, a cleaning piece, a material changing module and an edge cutting piece; a material changing module is rotationally mounted on the base, the base is in fastening connection with the edge cutting part, the supporting part is in fastening connection with the hot pressing module, and a cleaning part is mounted on the supporting part; the cleaning part comprises a telescopic rod and a cleaning plate, the telescopic rod is installed on the supporting part, the telescopic rod is fixedly connected with the cleaning plate, when the drainage bag is machined, the edge of the drainage bag is sealed through cooperation of the hot-pressing module and the material changing module, and after the edge of the drainage bag is sealed in a hot-pressing mode, the cleaning part cleans plastic filaments adhering to a heat sealing plate; and the yield of hot-pressing and edge sealing each time is ensured.

The utility model discloses a biliary tract inside and outside drainage device which comprises a drainage catheter, a fixing stay wire and a hard sleeve. The drainage catheter is composed of an inner drainage area, a narrow section covering area, a shaping area and an outer drainage area, and the interior of the drainage catheter is of a hollow structure. One end of the inner drainage area is designed into a cylindrical cone; a clamping table is arranged at one end of the outer drainage area and used for connecting a cap or a drainage bag; side holes penetrating through the inner cavity are formed in the outer walls of the inner drainage area and the shaping area; a marker point is arranged between the rear end of the side hole of the inner drainage area and the narrow section coverage area; the shaping area is curled into a loop in a natural state, and the shaping area can be straightened through the hard sleeve; the narrow section coverage area is distributed between the inner drainage area and the shaping area; the fixing stay wire comprises a fixing piece and a stay wire, and the tail end of the stay wire is connected with the fixing piece. The drainage catheter main body adopted by the utility model is made of a material with good biocompatibility; and internal drainage and external drainage can be realized. Multiple side holes are formed in the middle and the head end of the drainage tube, sufficient drainage is promoted, and infection risks are reduced.

The invention provides a surgical operation wound drainage and administration device which comprises a sponge imbedding sheet, a plurality of drainage tubes and administration tubes which are distributed in a pairwise staggered mode are arranged in the sheet, and a plurality of drainage holes and administration holes are formed in the peripheries of the drainage tubes and the administration tubes respectively. A main pipe strip perpendicular to the drainage pipe and the dosing pipe is arranged on one side of the sponge imbedding piece, a drainage cavity and a dosing cavity are formed in the main pipe strip, and the drainage pipe and the dosing pipe are communicated with the drainage cavity and the dosing cavity respectively. And the main pipe strip is outwards connected with a liquid outlet pipe and a liquid inlet pipe which are respectively communicated with the drainage cavity and the dosing cavity. The device further comprises a drainage bag communicated with the liquid outlet pipe and a medicine storage tank communicated with the liquid inlet pipe. A piston piece is arranged in the medicine storage tank, high-elasticity compression sponge is arranged on the side, away from the liquid inlet pipe, of the piston piece and stores medicine liquid, air inlet micropores are formed in the end, close to the high-elasticity compression sponge, of the medicine storage tank, and a hole blocking piece is detachably connected to the outer side. According to the device, all-directional and efficient drainage and continuous and uniform drug administration can be achieved, wound impregnation is effectively avoided, and the postoperative wound nursing accuracy and the treatment effect are improved.

The utility model belongs to the technical field of medical auxiliary instrument, provide a clinical drainage bag fixing device, including the hanging block and the hanging board of swing joint, the hanging block sets up with it vertical fixed connection's top clamping plate and with it swing joint's bottom clamping plate, top clamping plate with Bottom clamping plate parallel layout, the hanging board is provided with a plurality of horizontal interval arrangement's tension sensing unit and a plurality of with the hook of tension sensing unit connection, the hook fixed setting in the just below of tension sensing unit. The clinical drainage bag fixing device provided by the utility model has the advantages of simple structure, convenient use, stable and reliable fixation for the drainage bag, reduced incidence of unplanned extubation, convenient adjustment of the installation fixing position according to the clinical requirement, high practicality and wide application range.

The utility model relates to a medical nursing instrument, in particular to a vomitus collector for a bedridden patient, which comprises an integrally formed lateral open type collecting container and a supporting part for supporting the head of the patient, an inner cavity of the collecting container is used for receiving and containing vomitus of a patient, the bearing face of the supporting part is higher than the inner bottom of the collecting container, and the supporting part is obliquely arranged and downwards inclines in the direction of the collecting container; a connector communicated with an inner cavity of the collecting container is further arranged below the collecting container, and the connector is connected with the drainage bag through a catheter. According to the utility model, the structure with the supporting part and the lateral open type collecting container can be used for conveniently collecting vomitus of a bedridden patient, so that the face of the patient and the bed are prevented from being polluted by the vomitus, and the difficulty of cleaning and nursing is reduced; the device is connected to a collection container through a catheter and a drainage bag, so that pollution-free and quantitative collection of vomitus specimens is facilitated; and the whole structure adopts an ergonomic design, so that the use comfort of the patient is improved.

The utility model relates to a protection device and a drainage bag, the protection device comprises a first clamping part and a second clamping part, the second clamping part is connected to the first clamping part in a sliding mode, the first clamping part is provided with a first pipeline connector, the second clamping part is provided with a second pipeline connector, and the first pipeline connector is connected with the second pipeline connector in a sliding mode. The connecting line between the first pipeline connector and the second pipeline connector is parallel to the sliding track of the second clamping part. The problem that in the prior art, when two drainage tubes are held by a hand to connect the two drainage tubes, the palm is prone to touching the connecting position of the two drainage tubes, and the risk that bacteria on the palm are transmitted into the drainage tubes exists is solved.

The utility model discloses a drainage fixing device, relates to medical auxiliary instrument technical field, the drainage fixing device includes base, clamping subassembly and fixing subassembly, the lower end of base is equipped with the clamping groove that communicates its transverse both ends, the clamping subassembly includes the first clamping portion that is provided in the clamping groove, and the fixing subassembly is provided with the second clamping portion that is provided in the clamping groove. A clamping gap is formed between the first clamping part and the side wall, located in the longitudinal direction, of the clamping groove, the clamping groove can move in the longitudinal direction to adjust the clamping gap so that the base can be clamped to a supporting object, and the fixing assembly is arranged on the base and comprises a first fixing piece and a second fixing piece. The first fixing piece and the second fixing piece are respectively used for fixing a drainage bag and a drainage tube. According to the technical scheme, the overall structure can bear the weight of the drainage tube and the drainage bag through the supporting object, the skin of a patient cannot be pulled, and the comfort degree is improved.

There is provided a urine analysis device (1) capable of analyzing a urine sample to determine a physicochemical property value of the urine sample, comprising: a first sampling module (2) configured to form a fluid channel connection with a user and comprising a first discharge conduit (20) configured to discharge the urine sample from the first sampling module (2); a first discharge conduit (20) comprising a containment portion (20a) defining a predetermined volume and configured to retain a first portion of urine, and a release portion (20b) configured to deliver a second portion of urine out of the first sampling module (2); a drainage bag (3) forming a fluid channel connection with at least the release portion (20b) and configured to collect the second portion; an analysis device (4) placed in a fluid channel connection with the containing portion (20a) and configured to analyze at least a portion of the first portion; a control device (5) configured to process at least the data collected by the analysis device (4); and acquisition means (6) operably connected to the drainage bag (3) and configured to acquire at least a first parameter corresponding to the weight of the second portion of urine wherein the control means (5) is further configured to calculate a second parameter corresponding to the volume of the second portion in combination with the first parameter given a third predetermined parameter corresponding to the urine density, and adding the second parameter and the predetermined volume to obtain the total volume of the urine.

The utility model relates to an anti-backflow drainage bag which is provided with a bag body and a drainage tube, one end of the drainage tube extends into the bag body and is fixed at the top of the bag body, and the other end of the drainage tube is inserted into a position needing drainage; an anti-backflow assembly used for preventing liquid from flowing back is fixedly arranged in the drainage tube and comprises a fixing ring, a flexible sleeve and a pressed piece, the inner wall of the drainage tube is provided with an annular groove protruding outwards and allowing the fixing ring to be clamped in, the fixing ring is fixedly arranged in the annular groove, one end of the flexible sleeve is fixedly arranged on the fixing ring, and the other end of the flexible sleeve is fixedly arranged on the pressed piece. The other end of the flexible sleeve extends towards one side of the bag body, one end of the pressed piece is fixedly arranged on the outer wall of the flexible sleeve, the other end of the pressed piece extends towards the fixing ring, a first containing cavity allowing liquid to enter is formed between the pressed piece and the flexible sleeve, and the side, facing the bag body, of the flexible sleeve can be extruded to be closed after the liquid enters the first containing cavity. Liquid in the bag body can be prevented from flowing back to the body of a patient.

The utility model discloses a novel medical drainage bag, and relates to the field of medical instruments, the height of a movable column can be adjusted through the arrangement of a lifting structure, so that the movable column moves downwards, an L-shaped bent channel which is originally aligned with a collection output pipe moves downwards, liquid cannot enter a collection bag below through the L-shaped bent channel, and when the L-shaped bent channel moves downwards, the liquid cannot enter the collection bag below through the L-shaped bent channel. And the left-right through hole is aligned with the collection output pipe, the hydrops enter the next collection bag on the right side through the collection output pipe to be collected, the coherence of hydrops extraction is improved, and the efficiency is higher.

The utility model discloses a peritoneal drainage liquid sample reserving assembly which comprises a connecting seat, a drainage tube and a drainage bag, and a drainage channel used for communicating the drainage tube and the drainage bag is formed in the connecting seat; the sample reserving seats are detachably mounted on the connecting seat, sample reserving channels are formed in the sample reserving seats, liquid storage bottles are detachably mounted on the sample reserving seats, the liquid storage bottles are communicated with the drainage channel through the sample reserving channels, and valves are arranged at the communication positions between the sample reserving channels and the drainage channel. According to the utility model, the stable circulation of liquid between the drainage tube and the drainage bag can be ensured, meanwhile, the sample reserving in a specific time period can be realized, the influence of the sample reserving operation on the peritoneal drainage is reduced, and the accuracy of the liquid sample reserving is ensured.

The utility model discloses a kind of thyroid breast drainage equipment, comprising: threaded insertion in the upper end of fixed storage component for the drainage connection component of body fluid circulation, the upper end of the drainage connection component is fixedly connected with the drainage fixed component for drainage.The beneficial effects of the utility model are as follows: by being provided with fixed storage component, drainage bag is conveniently replaced, and at the same time, the device can be firmly fixed on the patient, by being provided with drainage connection component, let drainage connecting pipe be firmly fixed in the upper end of fixed storage component by threaded sleeve joint structure, it is convenient to disassemble and replace, by being provided with drainage fixed component, let drainage cover block cover drainage port, greatly reduce the liquid exudation of wound, increase the protective property of device use.

The utility model discloses a drainage bag liquid level alarm device relates to medical auxiliary instrument technical field, aims at solving the problem of manpower consumption, easy to leak, easy to pollute and inconvenient to use in prior art, adopts the technical scheme, including surface layer, middle layer circuit board and lower layer, the surface layer with lower layer encloses into sealed cavity, and the middle layer circuit board is located in sealed cavity, surface layer, the middle layer circuit board with lower layer all adopt flexible material, and lower layer is in line with the lateral wall of drainage bag, and the liquid level detection in cooperation middle layer circuit board to drainage bag, through adopting the liquid level detection of capacitive liquid level sensor, need not contact with the liquid in drainage bag, avoids the risk of cross infection, guarantees medical safety.

The utility model discloses an anti-backflow medical drainage bag, relates to medical drainage bag technical field, one side of drainage bag main part is fixedly connected with the protection mechanism, and the protection mechanism includes the protection frame that is fixedly connected to drainage bag main part outer surface position, one side of the protection frame is fixedly connected with the fixed block, and the fixed block is fixedly connected with the drainage bag main part. The inner surface of the fixing block is rotationally connected with a rotating shaft, one side of the rotating shaft is fixedly connected with an adsorption disc, one side of the drainage bag body is fixedly connected with a load reducing mechanism, the drainage bag body is a sterile drainage bag, the transparent material is silica gel, the drainage bag body has non-toxic and high-temperature-resistant performance, and the protection frame is hard in material and light in weight; the rotating shaft can adjust the angle of the adsorption disc. Compared with an existing common drainage bag, the anti-backflow medical drainage bag has the advantages that collision and extrusion damage occur, the possibility that the drainage bag is punctured by sharp objects is reduced, the firmness of the drainage bag is improved, the problem of overload of the drainage bag is avoided, and the flowing smoothness of liquid in the drainage tube is guaranteed.

The utility model discloses an in-vitro continuous drainage device, which belongs to the technical field of medical instruments and comprises a drainage ball and a drainage bag connected with the bottom of the drainage ball through a connecting pipe, an exhaust valve is arranged on the upper portion of the drainage bag, a diaphragm type one-way valve connected with the tail end of the connecting pipe is arranged inside the drainage bag, and a connector seat is fixed at the top of the drainage ball. A liquid inlet connector is formed on the connector base and connected with a liquid inlet three-way valve through a liquid inlet short pipe, the inlet end of the liquid inlet three-way valve is connected with the drainage pipe, the bypass end of the liquid inlet three-way valve is connected with a drainage branch pipe, and the drainage bag is connected with a liquid inlet branch pipe which is arranged side by side with the connecting pipe. And the drainage branch pipe is connected with the liquid inlet branch pipe through a non-return communicating vessel. According to the utility model, the continuity of the whole drainage process is ensured, and effusion at a wound is free from the risk of exosmosis in the drainage process.

The utility model relates to the technical field of medical instruments and discloses a medical drainage bag which comprises a drainage bag body, a handle is arranged at the top of the drainage bag body, a liquid outlet is formed in the bottom of the drainage bag body, a catheter is arranged at the top of the drainage bag body, a closed valve is connected to the outer surface of the catheter in a sleeved mode, a hanging ring is fixedly installed on one side of the drainage bag body, and a buckle is arranged at the top of the hanging ring. According to the medical drainage bag, through the arrangement of the hanging rings and the buckles, the drainage bag can be hung on the legs of a patient, when the patient needs to move, daily activities of the patient can be affected by lifting the drainage bag on the hand, and the drainage bag is hung on the legs of the patient through the medical drainage bag hanging device; according to the device, two hands of a patient can be liberated, meanwhile, the movement of the patient cannot be affected, the patient can independently complete some daily actions, the movement freedom degree of the patient is accordingly improved, the tightness degree of the bandage can be adjusted by adjusting the sliding buckle, and the device can be suitable for more patients to meet the actual requirements of the patients.

The utility model discloses a kind of dilute excrement flow guide devices, it relates to medical instrument technical field, including flow guide cover, connecting pipe and drainage bag, the flow guide cover side includes by first arc section and second arc section being arranged from top to bottom, tangent direction is same at the intersection of first arc section and second arc section, the convex direction of first arc section is oblique to the central inside flow guide cover, the concave direction of second arc section is oblique to the central inside flow guide cover;The tangent direction of the intersection of first arc section and second arc section of the flow guide cover of this scheme is same, this design guarantees the fluency when dilute excrement slides on the surface of flow guide cover, avoid appearing jam, the convex direction of first arc section is oblique to the central inside flow guide cover, can guide dilute excrement flowing down in upper portion to gather to center, the concave direction of second arc section is oblique to the central inside flow guide cover, further strengthen the converging guiding effect to dilute excrement, ensure that dilute excrement can accurately flow into lower connecting component.

The utility model discloses a drainage bag capable of controlling drainage volume, which comprises an outer frame, a first vertical guide rail, a second vertical guide rail, a telescopic drainage bag and an adjusting component, one end of the adjusting component is in sliding connection with the first vertical guide rail, and the other end of the adjusting component is in sliding connection with the second vertical guide rail. The first vertical guide rail and the second vertical guide rail are each provided with a plurality of adjusting holes arranged at intervals in the vertical direction, the adjusting holes are matched with the adjusting assembly in a clamped mode, the upper end of the telescopic drainage bag is connected with a drainage tube, and the drainage tube is rotationally connected with the outer frame. The lower end of the telescopic drainage bag is fixedly connected with the adjusting assembly; according to the utility model, the drainage amount can be adjusted without an electronic device, the possibility that the capacity cannot be adjusted due to failure of the electronic device is avoided, the adjusting mode is simple and quick, the manufacturing cost is low, and the device is suitable for clinical popularization and application.

The utility model discloses a kind of peritoneal cavity flushing drainage tube support frame, including liquid receiving disc and support pipe, liquid receiving disc is equipped with tray cavity, tray cavity upper surface is equipped with tray mouth, tray mouth is equipped with the fixed structure for fixing the position of existing peritoneal cavity drainage tube and existing negative pressure tube, peritoneal cavity drainage tube and negative pressure tube suture are disposed in tray mouth, so that suture place exudate falls in tray cavity, support pipe upper end is fixed in the lower surface of liquid receiving disc, support pipe lower end is equipped with base, base outside is equipped with hose, hose is communicated with tray cavity, existing drainage bag pagoda connector is inserted in hose, liquid in tray cavity flows to drainage bag by hose.The support frame of the utility model not only can fix the position of peritoneal cavity drainage tube and negative pressure tube, and raise drainage tube end, but also can collect peritoneal cavity drainage tube and negative pressure tube suture place exudate, avoid suture place exudate falling on bed surface and cause pollution, reduce the workload of medical staff arranging bed surface.

1. Name of the design product: drainage bag. 2. Use of the design product: mainly used for timely draining the moisture generated in the backpack during outdoor activities. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The application provides a kind of prevent drainage tube indentation protection bellyband, comprising: bellyband main body, the side of bellyband main body is provided with first magic tape, the other side of bellyband main body is provided with second magic tape;Second magic tape is connected with first magic tape by adhesion;Pressure relief cushion, pressure relief cushion is set between first magic tape and second magic tape;Pressure relief cushion is connected to bellyband main body on the side close to the outer edge of bellyband main body, gap is set between pressure relief cushion and bellyband main body, and gap is used to place drainage tube;Drainage tube channel, drainage tube channel is set between first magic tape and pressure relief cushion, and between second magic tape and pressure relief cushion;Drainage tube channel is used to pass through drainage tube, so that drainage tube is connected with drainage bag, to solve the problem that current protection bellyband is fixed drainage tube and is easy to form indentation on the skin of patient, even cause skin damage;When patient is active, drainage tube is prone to displacement or folding, leading to poor drainage and inconvenience to patients.

The wearable waterproof fixing waistband comprises a fixing waistband body, the outer side of the fixing waistband body is fixedly connected with a mounting belt, the front side of the mounting belt is provided with a storage assembly, the storage assembly comprises a storage bag, and the two ends of the rear side of the storage bag are fixedly connected with connecting belts; the connecting belt penetrates through the mounting belt and then is adjustably connected with the mounting belt through a connecting piece, the upper end of the storage bag is fixedly connected with a feeding pipe used for being connected with a drainage pipe, the front side of the storage bag is provided with a zipper capable of being opened and closed, and the bottom end of the storage bag is fixedly connected with a liquid discharging pipe. Through the arrangement of the storage bag and the internal height adjusting mechanism, the drainage bag is completely stored in the bag, hung through the hook and clamped and fixed through the two sides of the clamping plate, a drainage tube is prevented from being shaken and pulled during movement, the height adjusting mechanism can adjust the height of the drainage bag according to different body positions such as standing, sitting postures and stooping of a patient, and it is ensured that the drainage bag is always lower than a drainage opening; the risk of drainage liquid backflow is avoided.

The utility model relates to the technical field of negative pressure drainage bags, and discloses an anti-backflow negative pressure drainage bag which comprises a liquid storage bag, a drainage tube, an exhaust tube, an elastic air bag and a drainage bag body, a connecting assembly is fixedly installed on the inner wall of the top of the liquid storage bag, and the connecting assembly is communicated with an opening in the top of the drainage bag body. The bottom end of the drainage tube and the bottom end of the exhaust tube both extend into the drainage bag, the drainage bag is formed by fusing two PVC films, the two PVC films are not connected at one section of the center of the bottom of the drainage bag, connecting rings are fixedly installed at the left corner and the right corner of the bottom of the drainage bag, elastic ropes are tied to the connecting rings, the elastic ropes are used for pulling the connecting rings, and the drainage bag is fixed to the drainage tube. Compared with a mode of attaching the thin film through pressure difference, the mode has the advantages that traction force towards the two sides can be provided for the thin film, the thin film is pulled open, and then the problem of deformation of the thin film is avoided.

The utility model discloses a multifunctional hook for a sickbed. Preferably, the multifunctional hook comprises a cross rod, the two ends of the top of the cross rod are each provided with a height-adjustable adjusting mechanism, the top end of each adjusting mechanism is provided with a hanging mechanism used for anti-disengagement hanging, and the cross rod is internally provided with a transverse moving mechanism capable of adjusting the distance. The adjusting mechanism comprises a connecting assembly, a limiting assembly and an elastic assembly. Through the arrangement of the adjusting mechanism, the advantage that the height can be adjusted in the hanging operation process is achieved, so that the drainage bag can be hung at the needed height, the requirements of people are met, the normal drainage effect of the drainage bag is guaranteed, meanwhile, the drainage bag can be suitable for different users and different parts, and the practicability is high. By means of elastic cooperation of the connecting assembly, the limiting assembly and the elastic assembly, the needed position can be adjusted in a rotary push-pull mode, then stability after adjustment is guaranteed according to an elastic pushing and abutting mode, and stable hanging is facilitated.

The application discloses a drainage bag with an antibacterial functional layer and a preparation process thereof, and relates to the technical field of medical materials, and comprises the following steps: adding modified montmorillonite into N, N'-dimethylacetamide, uniformly mixing through ultrasonic, adding a polyurethane film, ultrasonic immersion for 60-120 min, drying, and obtaining a drainage bag substrate; adding polylactic acid into N, N-dimethylformamide, uniformly stirring and mixing, adding modified nano zinc oxide, uniformly mixing through ultrasonic, and then performing electrospinning to obtain an antibacterial coating fiber film; placing the antibacterial coating fiber film on the inner side surface of the drainage bag substrate, high-frequency heat sealing, assembling, and obtaining the drainage bag.

This invention discloses a device for pleural effusion drainage, relating to the field of pleural effusion drainage technology. It includes a housing, with an air pump mounted on the top, a suction tube inserted into the bottom of the air pump, and an air outlet on one side of the air pump. A pneumatic mechanism is installed on the inner bottom wall of the housing, comprising an air cylinder fixedly connected to the housing, a piston slidably connected inside the air cylinder, a connecting rod fixedly connected to the top of the piston, and a linkage mechanism mounted on the top of the connecting rod. This pleural effusion drainage device generates negative pressure inside the air cylinder. Under this negative pressure, the piston slides downwards, causing the two edges of the drainage bag to move away from each other, expanding the internal space of the drainage bag and thus creating negative pressure inside. This draws pleural effusion into the drainage bag. The design of the pneumatic mechanism and linkage structure isolates the pleural effusion from the outside environment, reducing the odor of the drained pleural effusion.