Active constant-volume constant-pressure washing assembly for tuberculous purulent pleural effusion

Abstract

The invention discloses an active constant-volume constant-pressure tuberculous purulent pleural effusion flushing assembly, and belongs to the technical field of medical flushing instruments. The device solves the problems that at present, an injector needs to be adopted for repeatedly sucking and flushing for several times during flushing of the tuberculous pyothorax, passive flushing is conducted on the tuberculous pyothorax, and the flushing effect is poor easily due to intolerance of a patient. A first piston and a second piston are inserted into an outer sheath, the end of the outer sheath is connected with a double-cavity catheter, a flushing pipe is arranged in the first piston, a drainage pipe is arranged in the second piston, one end of the flushing pipe is communicated with the double-cavity catheter through the outer sheath, the other end of the flushing pipe is connected with flushing fluid, and one end of the drainage pipe is communicated with the double-cavity catheter through the outer sheath. The other end of the drainage tube is connected with the drainage bag, and the first piston and the second piston are connected through a piston linkage device. According to the active constant-volume and constant-pressure washing assembly for the tuberculous pyothorax effusion, the washing pressure and the drainage pressure are also equal, so that the tuberculous pyothorax effusion is in a constant-volume and constant-pressure continuous state.

Description

Technical Field

[0001] The present invention relates to the technical field of medical flushing equipment, and in particular to an active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component. Background Art

[0002] In the treatment of tuberculous purulent pleural effusion, it is very important to perform normal saline or drug irrigation in addition to anti-tuberculosis drug treatment. Currently, there are no devices and equipment specifically for the irrigation of tuberculous empyema on the market. Clinicians need to use syringes to aspirate and rinse repeatedly in batches, which not only brings inconvenience to the doctor's operation, but also increases the risk of complications such as pneumothorax and hemothorax. Traditional irrigation methods use the liquid's own gravity as pressure, which is a "passive" irrigation method for tuberculous empyema. It takes a long time and is prone to poor irrigation effect due to patient intolerance.

[0003] Therefore, the present application proposes an active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the current flushing of tuberculous empyema requires repeated suction and flushing with a syringe in batches, and the passive flushing of tuberculous empyema is easily caused by patient intolerance, resulting in poor flushing effect. A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to identify the key or important parts of the present invention, nor is it intended to limit the scope of the present invention.

[0005] The technical solution of the present invention:

[0006] An active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component includes an outer sheath, a first piston, a second piston, a double-lumen catheter, a flushing tube, a drainage tube and a piston linkage device. The first piston and the second piston are inserted into the outer sheath, and the end of the outer sheath is connected to the double-lumen catheter. A flushing tube is provided in the first piston, and a drainage tube is provided in the second piston. One end of the flushing tube is connected to the double-lumen catheter through the outer sheath, and the other end of the flushing tube is connected to the flushing fluid. One end of the drainage tube is connected to the double-lumen catheter through the outer sheath, and the other end of the drainage tube is connected to the drainage bag. The first piston and the second piston are connected through the piston linkage device.

[0007] Furthermore, the outer sheath includes an injection catheter and a drainage catheter, the injection catheter and the drainage catheter are connected through a handheld device, the first piston is plugged into the injection catheter, the second piston is plugged into the drainage catheter, the injection catheter is connected to the double-lumen catheter through the injection pipe, and the drainage catheter is connected to the double-lumen catheter through the drainage pipe.

[0008] Furthermore, a first one-way valve is provided at the connection between the drainage connecting pipe and the drainage catheter, and a second one-way valve is provided at the connection between the injection connecting pipe and the injection catheter.

[0009] Furthermore, the first piston includes a first plug, a first support rod and a first base, the first plug is connected to the first base through the first support rod, the flushing pipe passes through the first base, the first support rod and the first plug in sequence and is fixed by the first plug, the second piston includes a second plug, a second support rod and a second base, the second plug is connected to the second base through the second support rod, the drainage pipe passes through the second base, the second support rod and the second plug in sequence and is fixed by the second plug.

[0010] Furthermore, a third one-way valve is provided at the end of the flushing tube, and a fourth one-way valve is provided at the end of the drainage tube.

[0011] Furthermore, the handheld device includes a double-connected sleeve and an ear seat, the ear seats are symmetrically connected to both sides of the double-connected sleeve, the injection catheter and the drainage catheter are inserted into the double-connected sleeve, and finger holes are processed on the ear seat.

[0012] Furthermore, the piston linkage device is symmetrically processed with a tube limiting groove and a piston connecting groove. The first base of the first piston and the second base of the second piston are respectively connected to the piston linkage device through the piston connecting grooves. The two tube limiting grooves on the piston linkage device are respectively used to place the flushing tube and the drainage tube.

[0013] Furthermore, the double-lumen catheter includes a main pipe, an input pipe, an output pipe and a pigtail pipe. The input pipe and the output pipe are connected to the main pipe to form a Y-shaped three-way catheter. The input pipe is connected to the injection catheter through the injection pipe, and the output pipe is connected to the drainage catheter through the drainage pipe. A pigtail pipe is provided at the other end of the main pipe, and a diverter plate is provided at the connection between the main pipe and the pigtail pipe.

[0014] Furthermore, the pigtail tube is an annular pipeline, a plurality of flushing holes are evenly distributed on the outside of the pigtail tube, a plurality of drainage holes are evenly distributed on the inside of the pigtail tube, and the aperture of the drainage hole is larger than the aperture of the flushing hole.

[0015] The present invention has the following beneficial effects:

[0016] 1. The flushing of tuberculous empyema should not be too fast or excessive, otherwise it will easily cause pleural reaction in patients, endangering the patient's life safety. Therefore, the active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component of the present invention adopts an isovolumetric and isobaric design, actively operates flushing and drainage, and during the operation, the amount of flushing and drainage liquid is equal, and the pressure of flushing and drainage is also equal, so that the tuberculous empyema fluid is in a continuous isovolumetric and isobaric state.

[0017] 2. The injection system and drainage system of the active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component of the present invention adopt a combinable and separable design. The first piston and the second piston can be combined or separated by a handheld device, and the injection volume and the retention time of the liquid in the pleural cavity can be controlled according to actual conditions. Similarly, by operating the second piston alone, the injection can be stopped and drainage can be performed alone to reduce the amount of liquid in the empyema.

[0018] 3. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component of the present invention also ensures that the flow direction of the medium is unidirectional during the injection and drainage process through a first one-way valve arranged between the drainage pipe and the drainage catheter, a fourth one-way valve at the end of the drainage tube, a second one-way valve arranged at the connection between the injection pipe and the injection catheter, and a third one-way valve at the end of the flushing tube, thereby avoiding the impact of injection and drainage backflow on the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the use of an active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component;

[0020] Figure 2 This is a schematic diagram of the active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly;

[0021] Figure 3 is a schematic diagram of the outer sheath;

[0022] Figure 4 It is the main view of the outer sheath;

[0023] Figure 5 yes Figure 4 A local schematic diagram of point A;

[0024] Figure 6 yes Figure 4 A partial schematic diagram of point B;

[0025] Figure 7 is a schematic diagram of the first piston and the second piston;

[0026] Figure 8 yes Figure 7 A partial schematic diagram of point C;

[0027] Figure 9 yes Figure 7 A partial schematic diagram of point D;

[0028] Figure 10 is a schematic diagram of a handheld device;

[0029] Figure 11 It is a schematic diagram of the piston linkage;

[0030] Figure 12 is a schematic diagram of a double-lumen catheter;

[0031] Figure 13 This is a partial schematic diagram of the pigtail tube.

[0032] In the figure: 1-outer sheath, 2-handheld device, 3-first piston, 4-second piston, 5-double-lumen catheter, 6-flushing tube, 7-drainage tube, 8-piston linkage device, 9-injection catheter, 10-drainage catheter, 11-injection pipe, 12-drainage pipe, 13-first one-way valve, 14-second one-way valve, 15-first plug, 16-second plug, 17-first support rod, 18-second support rod, 19-first base, 20-second base, 21-third one-way valve, 22-fourth one-way valve, 23-double connecting sleeve, 24-ear seat, 25-finger hole, 26-tube limiting groove, 27-piston connecting groove, 28-main pipe, 29-input pipe, 30-output pipe, 31-pigtail pipe, 32-flushing hole, 33-drainage hole, 34-diverter plate. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0034] The connections mentioned in the present invention are divided into fixed connections and detachable connections. The fixed connections (i.e., non-detachable connections) include but are not limited to conventional fixed connection methods such as hemming, rivet connection, bonding connection, and welding connection. The detachable connections include but are not limited to conventional detachable methods such as threaded connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly specified, it is assumed that at least one connection method can always be found among the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: a welded connection is selected for a fixed connection, and a hinge connection is selected for a detachable connection.

[0035] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] Example 1, combined Figures 1-13Describe this embodiment. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing component of this embodiment includes an outer sheath 1, a first piston 3, a second piston 4, a double-lumen catheter 5, a flushing tube 6, a drainage tube 7 and a piston linkage device 8. The first piston 3 and the second piston 4 are inserted into the outer sheath 1, and the end of the outer sheath 1 is connected to the double-lumen catheter 5. A flushing tube 6 is provided in the first piston 3, and a drainage tube 7 is provided in the second piston 4. One end of the flushing tube 6 is connected to the double-lumen catheter 5 through the outer sheath 1, and the other end of the flushing tube 6 is connected to the flushing fluid. One end of the drainage tube 7 is connected to the double-lumen catheter 5 through the outer sheath 1, and the other end of the drainage tube 7 is connected to the drainage bag. The first piston 3 and the second piston 4 are connected through the piston linkage device 8.

[0037] The flushing component is divided into two systems: injection and drainage. The outer sheath 1 is split or integrated. In this embodiment, the outer sheath 1 adopts a split structure. The outer sheath 1 includes an injection catheter 9 and a drainage catheter 10. The injection catheter 9 and the drainage catheter 10 are connected through a handheld device 2. The double-connected sleeve 23 of the handheld device 2 is respectively sleeved on the injection catheter 9 and the drainage catheter 10. Ear seats 24 are symmetrically arranged on both sides of the double-connected sleeve 23. Each ear seat 24 is processed with a finger hole 25. Under the action of the finger hole 25, medical staff can pass their fingers through the finger hole 25 to adjust the position of the double-connected sleeve 23; the injection catheter 9 and the drainage catheter 10 have the same specifications, a length of 26 cm, a total capacity of 120 ml, a scale mark of 120 ml, and a scale calibration every 10 ml. The length of the flushing tube 6 and the drainage tube 7 are both more than 100 cm, and the outer diameter is 7F.

[0038] The end of the infusion catheter 9 is connected to the input tube 29 of the double-lumen catheter 5 through the infusion pipe 11, and the end of the drainage catheter 10 is connected to the output end 30 of the double-lumen catheter 5 through the drainage pipe 12. The first piston 3 is inserted into the infusion catheter 9, and the second piston 4 is inserted into the drainage catheter 10. The input tube 29 and the output tube 30 are connected to the main tube 28 to form a Y-shaped tee. The length of the input tube 29 and the output tube 30 are both 15 cm and the outer diameter is 7 French. The length of the main tube 28 is 35 cm, and the scale is marked to 20 cm. There are length indications every 5 cm and 10 cm. The main tube 28 is a 14 French catheter formed by combining two 7 French outer diameter catheters. The two 7 French catheters are not connected to each other. The other end of the main tube 28 is connected to a pigtail tube 31. The pigtail tube 31 and part of the main tube 28 are inserted into the patient's chest cavity.

[0039] Insert the first piston 3 into the injection conduit 9, the second piston 4 into the drainage conduit 10, the flushing tube 6 sequentially passes through the first base 19, the first support rod 17, and the first plug 15 and is fixed to the first plug 15, and the drainage tube 7 sequentially passes through the second base 20, the second support rod 18, and the second plug 16 and is fixed to the second plug 16;

[0040] A second one-way valve 14 is provided at the connection between the injection catheter 9 and the injection connecting pipe 11. A third one-way valve 21 is provided at the end of the flushing tube 6 installed on the first plug 15. The second one-way valve 14 and the third one-way valve 21 are both one-way valves that open toward the injection end of the injection catheter 9. A first one-way valve 13 is provided at the connection between the drainage catheter 10 and the drainage connecting pipe 12. A fourth one-way valve 22 is provided at the end of the drainage tube 7 installed on the second plug 16. The first one-way valve 13 and the fourth one-way valve 22 are one-way valves that are away from the injection end of the drainage catheter 10.

[0041] After the assembly is completed, the external end of the flushing tube 6 is connected to the flushing liquid, the external end of the drainage tube 7 is connected to the drainage bag, the first base 19 of the first piston 3 and the second base 20 of the second piston 4 are aligned, the first base 19 and the second base 20 are connected through the piston linkage device 8, and the first base 19 and the second base 20 are snapped into the piston connecting groove 27 of the piston linkage device 8. To prevent the flushing tube 6 and the drainage tube 7 from getting tangled or running around, the flushing tube 6 and the drainage tube 7 are also snapped into the tube limiting groove 26 of the piston linkage device 8;

[0042] When the piston linkage 8 is pulled out, negative pressure is formed in the injection catheter 9, the third one-way valve 21 on the irrigation tube 6 opens, and the second one-way valve 14 between the injection connecting pipe 11 and the injection catheter 9 closes. The negative pressure causes the irrigation liquid to be injected into the injection catheter 9. When the irrigation liquid reaches the required volume, the piston linkage 8 is pushed forward. At this time, the pressure in the cavity of the injection catheter 9 increases, and the second one-way valve 14 opens, pushing the irrigation liquid from the injection catheter 9 into the input tube 29 of the double-lumen catheter 5. The irrigation liquid flows through the main tube 28 and the pigtail tube 31, and then enters the pleural cavity through the irrigation hole 32 on the outside of the pigtail tube 31. The purulent pleural effusion is flushed and diluted by the irrigation liquid.

[0043] Pull out the piston linkage device 8 again, the first one-way valve 13 at the connection between the drainage pipe 12 and the drainage catheter 10 is opened, and the fourth one-way valve 22 on the drainage tube 7 is closed. The flushed purulent pleural effusion enters through the drainage hole 33 of the pigtail tube 31, flows through the main pipe 28 under the action of the diverter plate 34, and enters the output pipe 30, and then enters the drainage catheter 10. Push the piston linkage device 8 again, the first one-way valve 13 is closed, and the fourth one-way valve 22 is opened. The pressure in the drainage catheter 10 increases, and the diluted purulent pleural effusion in the drainage catheter 10 is discharged into the drainage bag through the drainage tube 7. When the piston linkage device 8 is pulled out, the cavities of the injection catheter 9 and the drainage catheter 10 are filled with liquid. When the piston linkage device 8 is pushed, the liquid in the cavity is emptied, so that the injection and drainage are carried out at the same volume and pressure.

[0044] The drainage holes 33 of the pigtail tube 31 are arranged on the inner ring side of the pigtail tube 31 , and the flushing holes 32 are arranged on the outer ring side of the pigtail tube 31 . The diameter of the drainage holes 33 is larger than the diameter of the flushing holes 32 , and the number of the flushing holes 32 is greater than the number of the drainage holes 33 .

[0045] After removing the piston linkage device 8, the injection system and the drainage system can be used separately. By operating the first piston 3 alone, only injection without drainage can be performed, and the injection volume and the retention time of the liquid in the chest cavity can be controlled according to actual conditions. Similarly, by operating the second piston 4 alone, the injection can be stopped and drainage can be performed alone to reduce the amount of liquid in the empyema.

[0046] This embodiment is only an illustrative description of the present invention and does not limit its protection scope. Those skilled in the art may also make partial changes thereto. As long as they do not exceed the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly, characterized in that: The invention comprises an outer sheath (1), a first piston (3), a second piston (4), a double-lumen catheter (5), a flushing tube (6), a drainage tube (7) and a piston linkage device (8). The first piston (3) and the second piston (4) are inserted into the outer sheath (1), and the end of the outer sheath (1) is connected to the double-lumen catheter (5). The first piston (3) is provided with a flushing tube (6), and the second piston (4) is provided with a drainage tube (7). One end of the flushing tube (6) is connected to the double-lumen catheter (5) through the outer sheath (1), and the other end of the flushing tube (6) is connected to the flushing liquid. One end of the drainage tube (7) is connected to the double-lumen catheter (5) through the outer sheath (1), and the other end of the drainage tube (7) is connected to the drainage bag. The first piston (3) and the second piston (4) are connected via the piston linkage device (8).

2. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 1, characterized in that: The outer sheath (1) comprises an injection catheter (9) and a drainage catheter (10); the injection catheter (9) and the drainage catheter (10) are connected via a handheld device (2); the first piston (3) is plugged into the injection catheter (9); the second piston (4) is plugged into the drainage catheter (10); the injection catheter (9) is connected to the double-lumen catheter (5) via an injection pipe (11); and the drainage catheter (10) is connected to the double-lumen catheter (5) via a drainage pipe (12).

3. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 2, characterized in that: A first one-way valve (13) is provided at the connection between the drainage pipe (12) and the drainage catheter (10), and a second one-way valve (14) is provided at the connection between the injection pipe (11) and the injection catheter (9).

4. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 3, characterized in that: The first piston (3) comprises a first plug (15), a first support rod (17) and a first base (19); the first plug (15) is connected to the first base (19) via the first support rod (17); the flushing pipe (6) passes through the first base (19), the first support rod (17) and the first plug (15) in sequence and is fixed by the first plug (15); the second piston (4) comprises a second plug (16), a second support rod (18) and a second base (20); the second plug (16) is connected to the second base (20) via the second support rod (18); the drainage pipe (7) passes through the second base (20), the second support rod (18) and the second plug (16) in sequence and is fixed by the second plug (16).

5. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 4, characterized in that: The end of the flushing tube (6) is provided with a third one-way valve (21), and the end of the drainage tube (7) is provided with a fourth one-way valve (22).

6. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 2, characterized in that: The handheld device (2) comprises a double-connected sleeve (23) and an ear seat (24), the ear seats (24) are symmetrically connected to both sides of the double-connected sleeve (23), the injection catheter (9) and the drainage catheter (10) are inserted into the double-connected sleeve (23), and the ear seat (24) is processed with a finger hole (25).

7. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 3, characterized in that: The piston linkage device (8) is symmetrically processed with a tube limiting groove (26) and a piston connecting groove (27); the first base (19) of the first piston (3) and the second base (20) of the second piston (4) are respectively connected to the piston linkage device (8) through the piston connecting groove (27); the two tube limiting grooves (26) on the piston linkage device (8) are respectively used to place the flushing tube (6) and the drainage tube (7).

8. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 7, characterized in that: The double-lumen catheter (5) comprises a main pipe (28), an input pipe (29), an output pipe (30) and a pigtail pipe (31); the input pipe (29) and the output pipe (30) are connected to the main pipe (28) to form a Y-shaped three-way catheter; the input pipe (29) is connected to the injection pipe (9) through an injection pipe (11); the output pipe (30) is connected to the drainage pipe (10) through a drainage pipe (12); a pigtail pipe (31) is provided at the other end of the main pipe (28); and a drainage hole (34) is provided at the connection between the main pipe (28) and the pigtail pipe (31).

9. The active isovolumetric and isobaric tuberculous purulent pleural effusion flushing assembly according to claim 8, characterized in that: The pigtail tube (31) is an annular pipeline, a plurality of flushing holes (32) are evenly distributed on the outside of the pigtail tube (31), a plurality of drainage holes (33) are evenly distributed on the inside of the pigtail tube (31), and the diameter of the drainage holes (33) is larger than the diameter of the flushing holes (32).

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