Pleural effusion drainage device

Abstract

The utility model discloses a pleural effusion drainage device which comprises a drainage tube, a flow meter, a flow speed adjusting mechanism, a collecting bag, a buffering bag and a negative pressure device, the flow meter and the flow speed adjusting mechanism are both arranged on the drainage tube, the collecting bag is connected with the drainage tube, the buffering bag is connected with the collecting bag through a first connecting tube, and the first connecting tube is provided with a first switch valve. The negative pressure device comprises a negative pressure bottle, an air pressure measuring device, a telescopic bag body and a pressing mechanism, the negative pressure bottle is connected with the buffer bag through a second connecting pipe, the telescopic bag body is connected with the negative pressure bottle, the pressing mechanism is used for pressing or loosening the telescopic bag body, a spring is arranged in the telescopic bag body and can make the telescopic bag body reset, and the negative pressure bottle is provided with an air leakage opening. And a third switch valve is arranged at the air release port. The drainage speed and the negative pressure can be accurately adjusted, serious adverse reactions of a patient are avoided, and the device is suitable for drainage of leaked liquid, exudate and thick pus which is difficult to drain through an existing common drainage tube.

Description

Technical Field

[0001] The utility model relates to the technical field of pleural effusion drainage, in particular to a pleural effusion drainage device. Background Art

[0002] At present, a drainage tube is usually used to drain the effusion in the pleural cavity. For details, please refer to the utility model patent with publication number CN201085805Y, which specifically discloses a pleural effusion drainage device, in which a flexible drainage tube 5 is inserted into a puncture needle 4, a needle seat of the puncture needle 4 is plugged and connected to a liquid storage bag 3, one end of the flexible drainage tube 5 is inserted into the liquid storage bag 3, and a negative pressure suction tube connector 1 with a switch 2 is fixedly connected to the liquid storage bag 3. The pleural effusion drainage device can be used to naturally drain into the liquid storage bag 3 through the puncture needle 4, but the patent does not realize the control of the drainage speed and negative pressure. Too fast drainage speed or high negative pressure can easily cause serious adverse reactions such as re-expansion pulmonary edema in patients. At present, negative pressure is generally provided by connecting a syringe to a fluid storage bag, and the negative pressure is controlled by pulling out the syringe, thereby controlling the drainage speed. However, this method is usually difficult to accurately control the negative pressure and drainage speed, and the effect is not ideal, especially for pleural effusions with high viscosity. It is time-consuming and laborious to pull out the high-viscosity pleural effusions by pulling out the syringe. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a pleural effusion drainage device, which can more accurately adjust the drainage speed and the size of the negative pressure to avoid serious adverse reactions in patients. For pleural effusions that are thin and non-viscous, only the drainage tube, flow meter, flow rate regulating mechanism, and collection bag of the utility model need to be used, and the pleural effusion is naturally drained out by gravity and siphon action, and the flow rate is adjusted by the flow rate regulating mechanism. The drainage speed is observed by the flow meter to avoid the pleural effusion being drained too quickly and causing adverse reactions. For pleural effusions that are viscous in texture (such as purulent pleural effusions), components such as a buffer bag and a negative pressure device are added, and the drainage speed of the pleural effusion is adjusted by adjusting the size of the negative pressure and the flow rate regulating mechanism to avoid the pleural effusion being drained too quickly and causing adverse reactions.

[0004] According to the pleural effusion drainage device of the embodiment of the utility model, it includes: a drainage tube; a flow meter, which is arranged on the drainage tube; a flow rate regulating mechanism, which is arranged on the drainage tube; a collecting bag, which is connected to the drainage tube; a buffer bag, which is connected to the collecting bag through a first connecting tube, the first connecting tube is provided with a first switch valve, a first knob is provided on one side of the buffer bag, and an end of the first connecting tube away from the collecting bag is threadedly connected to the first knob; a negative pressure device, which includes a negative pressure bottle, an air pressure measuring device, a retractable capsule and a pressing mechanism, the negative pressure bottle is connected to the buffer bag through a second connecting tube, the air pressure measuring device is connected to the negative pressure bottle, and a first knob is provided on one side of the negative pressure bottle. A second knob is provided, and one end of the second connecting tube away from the buffer bag is threadedly connected to the second knob so that the second connecting tube is connected to the inner cavity of the negative pressure bottle to detect the air pressure in the negative pressure bottle. The retractable capsule is connected to the negative pressure bottle, and the pressing mechanism is used to press or release the retractable capsule. A spring is provided in the retractable capsule, and the spring can reset the retractable capsule. The negative pressure bottle is provided with an air vent, and a third switch valve is provided at the air vent; a sealing cover, when the first connecting tube is separated from the buffer bag, the sealing cover can be threadedly connected to one end of the first connecting tube away from the collecting bag to seal the collecting bag.

[0005] The pleural effusion drainage device according to the embodiment of the utility model has at least the following beneficial effects: the flow meter on the drainage tube can display the flow through the drainage tube, which is convenient for monitoring; the flow rate regulating mechanism can adjust the drainage speed of the drainage tube, and the flow rate regulating mechanism can be adjusted according to the reading of the flow meter to improve the adjustment accuracy; the negative pressure device can provide negative pressure to the collection bag, specifically, first close the first switch valve and the second switch valve, and then open the third switch valve, the air vent is connected to the outside, and then control the pressing mechanism to press the retractable capsule, and the air in the retractable capsule is discharged from the air vent, so that the retractable capsule is in a compressed state, and the air cannot enter the drainage tube, and then close the third switch valve. Close the valve, and open the first switch valve and the second switch valve, control the pressing mechanism to release the retractable bag, the spring will reset the retractable bag, the retractable bag will generate negative pressure, and the effusion in the patient's pleural cavity will be sucked into the collection bag. The air pressure measuring device can detect the air pressure in the negative pressure bottle, and can adaptively adjust the degree to which the pressing mechanism releases the retractable bag according to the air pressure value of the air pressure measuring device, so as to more accurately control the size of the negative pressure. By controlling the size of the negative pressure, the drainage speed in the drainage tube can be controlled, especially for pleural effusion with higher viscosity. The negative pressure provided by the negative pressure device is larger, which can effectively attract high-viscosity pleural effusion, and can accurately control the size of the negative pressure and the drainage speed. In addition, the buffer bag can play a buffering effect, which can prevent pleural effusion from entering the negative pressure bottle, polluting and damaging the negative pressure device, and is also beneficial to preventing hospital infection. In addition, the first knob is used to connect the buffer bag and the first connecting tube, and the second knob is used to connect the negative pressure bottle and the second connecting tube. The buffer bag and the first connecting tube can be locked or separated by directly turning the first knob, and the negative pressure bottle and the second connecting tube can be locked or separated by directly turning the second knob. There is no need to rotate the first connecting tube and the second connecting tube, and the disassembly and assembly operation is more convenient. In addition, when collecting thin and non-viscous pleural effusion, due to its small flow resistance, there is no need to use a negative pressure device. The first knob can be turned to separate the buffer bag and the first connecting tube, and the sealing cover is threadedly connected to the first connecting tube to seal the collection bag to prevent external air from entering the patient's chest cavity through the collection bag. Only the drainage tube, flow meter, flow rate regulating mechanism, collection bag and other components of the utility model need to be used to naturally drain the pleural effusion by gravity and siphon action, adjust the flow rate by the flow rate regulating mechanism, and observe the drainage speed by the flow meter to avoid adverse reactions caused by excessive drainage of the pleural effusion.

[0006] According to some embodiments of the utility model, the pressing mechanism includes a screw motor, a lifting plate and a support plate, the retractable capsule is located between the lifting plate and the support plate, the fixed end of the screw motor is fixed to the support plate, the screw end of the screw motor is threadedly connected to the lifting plate, the screw motor is used to drive the lifting plate to perform lifting movements, the support plate is provided with a guide shaft extending in a vertical direction, and the guide shaft is slidably connected to the lifting plate.

[0007] According to some embodiments of the present invention, a plurality of guide shafts are provided, and the plurality of guide shafts are arranged along the circumferential direction.

[0008] According to some embodiments of the utility model, the negative pressure device includes a bracket, which is located at the top of the negative pressure bottle, and is used to support the retractable capsule. The top of the bracket is provided with a groove, and the support plate is provided with a convex portion extending downward, and the convex portion cooperates with the groove to limit the movement of the support plate.

[0009] According to some embodiments of the present utility model, the air pressure measuring device is located outside the negative pressure bottle, and the air pressure measuring device is a negative pressure gauge air pressure measuring device.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0012] Figure 1 It is a schematic diagram of the structure of a pleural effusion drainage device according to some embodiments of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of a pleural effusion drainage device according to some embodiments of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the pressing mechanism and the retractable capsule of the negative pressure device of the pleural effusion drainage device in some embodiments of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the pressing mechanism and the retractable capsule of the negative pressure device of the pleural effusion drainage device in some embodiments of the utility model;

[0016] Figure 5 This is a schematic structural diagram of a pressing mechanism and a retractable sac of a negative pressure device of a pleural effusion drainage device in some embodiments of the utility model.

[0017] Reference numerals:

[0018] Pleural effusion drainage device 1000;

[0019] Drainage tube 100;

[0020] Flow meter 200;

[0021] Flow rate regulating mechanism 300;

[0022] A collection bag 400 and a first knob 410;

[0023] Negative pressure device 500, negative pressure bottle 510, air release port 511, third switch valve 512, second knob 513, air pressure measuring device 520, retractable capsule 530, spring 531, pressing mechanism 540, screw motor 541, lifting plate 542, support plate 543, guide shaft 544, bracket 545;

[0024] Cushion bag 600;

[0025] A first connecting pipe 700 and a first switch valve 710;

[0026] A second connecting pipe 800 and a second switch valve 810;

[0027] Sealing cover 900. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] Reference Figure 1As shown, a pleural effusion drainage device 1000 of an embodiment of the utility model includes a drainage tube 100, a flow meter 200, a flow rate regulating mechanism 300, a collection bag 400, a negative pressure device 500 and a buffer bag 600. The flow meter 200 and the flow rate regulating mechanism 300 are both arranged on the drainage tube 100. The flow meter 200 can display the flow through the drainage tube 100. The flow rate regulating mechanism 300 can adjust the flow rate of the drainage tube 100. The flow rate regulating mechanism 300 can be a Robert clamp or a medical hose flow rate regulator with a roller. The collection bag 400 is connected to the drainage tube 100, and the collection bag 400 is used to collect pleural effusion. The buffer bag 600 is connected to the collection bag 400 through a first connecting tube 700. The first connecting tube 700 is provided with a first switch valve 710, and the first switch valve 710 can control the on-off of the first connecting tube 700. A first knob 410 is provided on one side of the buffer bag 600. The first knob 410 is a ring-shaped structure. The first knob 410 is connected to the buffer bag 600 as a whole, and the first knob 410 can rotate freely. The inner circle of the first knob 410 is provided with an internal thread, and the outer circle of the first connecting tube 700 is provided with an external thread. The external thread of the first connecting tube 700 is threadedly connected with the internal thread of the first knob 410. The first knob 410 can also be directly rotated to lock the first connecting tube 700 and the buffer bag 600, and the first connecting tube 700 is communicated with the inner cavity of the buffer bag 600. The first knob 410 can also be rotated to separate the first connecting tube 700 from the buffer bag 600. The first connecting tube 700 does not need to be rotated during the entire operation process, and the disassembly and assembly operation is more convenient.

[0030] Reference Figure 1As shown, the negative pressure device 500 includes a negative pressure bottle 510, an air pressure measuring device 520, a retractable capsule 530 and a pressing mechanism 540. The negative pressure bottle 510 is connected to the buffer bag 600 through a second connecting tube 800. The second connecting tube 800 is provided with a second switch valve 810. The second switch valve 810 can control the on and off of the second connecting tube 800. One end of the second connecting tube 800 away from the buffer bag 600 is connected to the negative pressure bottle 510. A second knob 513 is provided on one side of the negative pressure bottle 510. The second knob 513 is an annular structure. The second knob 513 is rotatable. The inner circle of the second knob 513 is provided with an internal thread. The outer circle of the second connecting tube 800 is provided with an external thread. The external thread of the second connecting tube 800 is threadedly connected with the internal thread of the second knob 513. The second knob 513 can be directly rotated to lock the second connecting tube 800 with the negative pressure bottle 510, and the second connecting tube 800 is connected to the inner cavity of the negative pressure bottle 510. The second knob 513 can also be rotated to loosen the second connecting tube 800 with the negative pressure bottle 510, without rotating the second connecting tube 800, and the disassembly and assembly operation is relatively convenient. The air pressure measuring device 520 is connected to the negative pressure bottle 510, and the air pressure measuring device 520 is located outside the negative pressure bottle 510. The air pressure measuring device 520 can be a negative pressure gauge with a relatively simple structure. The air pressure measuring device 520 can also include an air pressure sensor and a display screen, and the display screen can display the air pressure value detected by the air pressure sensor. The negative pressure bottle 510 is connected to the retractable capsule 530, and the negative pressure bottle 510 is provided with an air release port 511, and a third switch valve 512 is provided at the air release port 511, and the third switch valve 512 can open or close the air release port 511. The retractable capsule 530 has a cavity therein, and the pressing mechanism 540 is used to press or release the retractable capsule 530, so that the retractable capsule 530 can generate positive pressure or negative pressure. A spring 531 is provided in the retractable capsule 530. When the pressing mechanism 540 presses the retractable capsule 530, the spring 531 is compressed. When the pressing mechanism 540 releases the retractable capsule 530, the spring 531 can reset the retractable capsule 530. The negative pressure range provided by the retractable capsule 530 is 0 to -300 cmH2O.

[0031] When in use, one end of the drainage tube 100 is connected to the puncture needle tube and inserted into the chest cavity. The drainage tube 100 can drain the effusion in the chest cavity. By observing the reading of the flow meter 200, the flow rate of the drainage tube 100 can be accurately monitored. The flow rate regulating mechanism 300 can be adjusted more accurately in conjunction with the reading of the flow meter 200, thereby more accurately adjusting the drainage speed of the drainage tube 100, so that the patient can be in a more comfortable state. Before opening the negative pressure device 500, first close the first switch valve 710 and the second switch valve 820, and then open the third switch valve 512 to connect the air vent 511 to the outside world, and then control the pressing mechanism 540 to press the retractable capsule 530, and the air in the retractable capsule 530 is discharged through the air vent 511, so that the retractable capsule 530 is in a compressed state, and air cannot enter the drainage tube 100, so as to prevent air from entering the chest cavity, and then close the third switch valve 512 to prevent the gas in the negative pressure bottle 510 from connecting to the outside world, and open the first switch valve 512. The switch valve 710 and the second switch valve 820 are then controlled to control the pressing mechanism 540 to release the retractable capsule 530. The spring 531 will reset the retractable capsule 530. The retractable capsule 530 will generate negative pressure, and the effusion in the patient's pleural cavity will be sucked into the collecting bag 400. The air pressure measuring device 520 can detect the air pressure value in the negative pressure bottle 510. The degree to which the pressing mechanism 540 releases the retractable capsule 530 can be controlled according to the air pressure value of the air pressure measuring device 520, so as to more accurately control the size of the negative pressure. By controlling the size of the negative pressure and the flow rate regulating mechanism on the drainage tube, the drainage speed in the drainage tube 100 can be controlled. Compared with the existing solution of controlling the negative pressure through a syringe, the accuracy of this embodiment is better, especially for pleural effusion with higher viscosity. The negative pressure provided by the negative pressure device is larger, which can effectively attract pleural effusion with high viscosity, and the negative pressure size and drainage speed can be judged by the readings, so the negative pressure size and drainage speed can be accurately controlled. In addition, the buffer bag 600 can play a buffering role to prevent the pleural effusion in the collection bag 400 from entering the negative pressure bottle 510, thereby preventing the pleural effusion from contaminating the negative pressure bottle 510 and damaging the negative pressure device, and is also beneficial for preventing hospital infection.

[0032] In addition, refer to Figure 2As shown, for pleural effusion with thin texture and no viscosity, due to its small flow resistance, it is not necessary to use the negative pressure device 500. The first knob 410 can be turned to separate the buffer bag 600 and the first connecting tube 700, and the sealing cover 900 is threadedly connected to the end of the first connecting tube 700 away from the collecting bag 400. The sealing cover 900 is a cylindrical structure, and the inner circle of the sealing cover 900 is provided with an internal thread. After tightening the sealing cover 900, the first connecting tube 700 cannot be connected to the outside world, and the collecting bag 400 can be sealed to prevent the outside air from entering the patient's chest cavity through the collecting bag 400. Only the drainage tube 100, flow meter 200, flow rate regulating mechanism 300, and collecting bag 400 of the utility model need to be used, and the pleural effusion can be naturally drained out by gravity and siphon action, the flow rate is adjusted by the flow rate regulating mechanism 300, and the drainage speed is observed by the flow meter 200 to prevent the pleural effusion from being drained too quickly and causing adverse reactions. For viscous pleural effusion, a buffer bag 600, a negative pressure device 500 and other components are added. By adjusting the negative pressure and the flow rate regulating mechanism 300, the drainage speed of the pleural effusion is adjusted to avoid adverse reactions caused by excessive drainage of the pleural effusion.

[0033] Reference Figure 3 and Figure 4 As shown, according to some embodiments of the utility model, the pressing mechanism 540 includes a screw motor 541, a lifting plate 542 and a support plate 543, the retractable capsule 530 is located between the lifting plate 542 and the support plate 543, the fixed end of the screw motor 541 is fixed to the support plate 543, the screw end of the screw motor 541 is threadedly connected to the lifting plate 542, when the screw of the screw motor 541 rotates, it can drive the lifting plate 542 to perform lifting movement, the screw motor 541 is used to drive the lifting plate 542 to perform lifting movement, the support plate 543 is provided with a guide shaft 544 extending in the vertical direction, the guide shaft 544 is slidably connected to the lifting plate 542, can play a guiding role, and prevent the lifting plate 542 from running off. Figure 4 In the embodiment, the retractable capsule 530 is in an initial state. Figure 5 The degree of pressing or releasing of the telescopic capsule 530 by the pressing mechanism 540 depends on the height position of the lifting plate 542. According to some embodiments of the present invention, a plurality of guide shafts 544 are provided, and the plurality of guide shafts 544 are arranged along the circumferential direction, which can improve the guiding effect.

[0034] Reference Figure 1 and Figure 3As shown, according to some embodiments of the present invention, the retractable capsule 530 and the pressing mechanism 540 are placed above the negative pressure bottle 510, and the negative pressure device 500 includes a bracket 545, which is located on the top of the negative pressure bottle 510. The bracket 545 is used to support the retractable capsule 530 to prevent the retractable capsule 530 from shaking at will. According to some embodiments of the present invention, a groove is provided on the top of the bracket 545, and a convex portion extending downward is provided on the support plate 543. The convex portion cooperates with the groove to limit the movement of the support plate 543, thereby preventing the retractable capsule 530 and the pressing mechanism 540 from shaking at will.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, inside, outside, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the utility model, if there is a description of first or second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. Finally, it should be explained that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A pleural effusion drainage device, characterized in that: include: Drainage tube; A flow meter, arranged on the drainage tube; A flow rate regulating mechanism, arranged on the drainage tube; A collecting bag connected to the drainage tube; A buffer bag is connected to the collecting bag through a first connecting pipe, the first connecting pipe is provided with a first switch valve, a first knob is provided on one side of the buffer bag, and an end of the first connecting pipe away from the collecting bag is threadedly connected to the first knob; a negative pressure device comprises a negative pressure bottle, an air pressure measuring device, a retractable capsule and a pressing mechanism, the negative pressure bottle is connected to the buffer bag through a second connecting pipe, the second connecting pipe is provided with a second switch valve, a second knob is provided on one side of the negative pressure bottle, and an end of the second connecting pipe away from the buffer bag is threadedly connected to the second knob so that the second connecting pipe is connected to the inner cavity of the negative pressure bottle, the air pressure measuring device is connected to the negative pressure bottle to detect the air pressure in the negative pressure bottle, the retractable capsule is connected to the negative pressure bottle, the pressing mechanism is used to press or release the retractable capsule, a spring is provided in the retractable capsule, and the spring can reset the retractable capsule, the negative pressure bottle is provided with an air release port, and a third switch valve is provided at the air release port; A sealing cover, when the first connecting tube is separated from the buffer bag, the sealing cover can be threadedly connected to an end of the first connecting tube away from the collecting bag to seal the collecting bag.

2. The pleural effusion drainage device according to claim 1, characterized in that: The pressing mechanism includes a screw motor, a lifting plate and a support plate, the retractable capsule is located between the lifting plate and the support plate, the fixed end of the screw motor is fixed to the support plate, the screw end of the screw motor is threadedly connected to the lifting plate, the screw motor is used to drive the lifting plate to perform lifting movements, the support plate is provided with a guide shaft extending in a vertical direction, and the guide shaft is slidably connected to the lifting plate.

3. The pleural effusion drainage device according to claim 2, characterized in that: The guide shafts are provided in plurality and are arranged along the circumferential direction.

4. The pleural effusion drainage device according to claim 2, characterized in that: The negative pressure device includes a bracket, which is located on the top of the negative pressure bottle and is used to support the retractable capsule. A groove is provided on the top of the bracket, and the support plate is provided with a convex portion extending downward, which cooperates with the groove to limit the movement of the support plate.

5. The pleural effusion drainage device according to claim 1, characterized in that: The air pressure measuring device is located outside the negative pressure bottle, and the air pressure measuring device is a negative pressure gauge.

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