Autologous drainage device for pleural effusion

Abstract

The invention discloses a hydrothorax autologous drainage device which comprises a thoracentesis catheter and an abdominal puncture catheter. The thoracic puncture catheter and the abdominal puncture catheter are communicated and connected through a middle catheter to form a pipeline capable of guiding hydrothorax from the chest cavity to the abdominal cavity, an anti-backflow structure is arranged on the pipeline, and a power module can be further arranged on the middle catheter to change the drainage speed. The pleural effusion is led to the abdominal cavity from the thoracic cavity, so that protein loss can be avoided while the pleural effusion is reduced; due to the portability of the equipment, the equipment can be carried and used outside a hospital for a long time, the out-of-hospital survival time of a patient is prolonged, and the living quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a pleural effusion autologous drainage device. Background Art

[0002] According to statistics, the prevalence rate of heart failure patients is about 1.1%, the global prevalence rate of chronic kidney disease is 10%-16%, diabetic nephropathy affects 30%-50% of diabetic patients and nearly half of end-stage kidney disease is caused by diabetic nephropathy, which has become a major burden on global healthcare. Moreover, with the increase of aging, the prevalence rates of chronic heart failure, diabetic nephropathy, and chronic kidney disease are on the rise. These three diseases are key parts of the vascular-renal-metabolic syndrome, and patients with advanced heart failure or diabetic nephropathy combined with heart failure often have the condition of intractable pleural effusion, which is also a common cause of death and disability. Currently, the traditional treatment method is mainly external thoracic drainage. However, this method has many drawbacks. For example, the operation needs to be carried out in a medical institution, the drainage bottle needs to be replaced repeatedly, and the infection risk increases; the pleural effusion in the thoracic cavity drained to the outside of the body will cause a large amount of protein loss, and the low protein further causes an increase in exudative effusion, forming a vicious cycle, affecting the patient's recovery process; the long-term hospitalization treatment and the need to supplement protein increase the patient's medical expenses. Summary of the Invention

[0003] The purpose of the present invention is to provide a pleural effusion autologous drainage device, which can relieve the compression of the lung by pleural effusion, improve the patient's symptoms, reduce the protein loss caused by traditional external drainage, promote the patient's recovery and improve the patient's quality of life; and through long-term indwelling and sealing treatment, reduce the infection risk, enable the patient to use it portably outside the hospital, and reduce the patient's readmission rate.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The pleural effusion autologous drainage device provided by the present invention includes a thoracic puncture catheter and an abdominal puncture catheter; a middle catheter is connected between the thoracic puncture catheter and the abdominal puncture catheter to form a pipeline capable of leading pleural effusion from the thoracic cavity to the abdominal cavity, and an anti-backflow structure is provided on the pipeline.

[0006] Preferably, a power module for changing the drainage speed is provided on the middle catheter.

[0007] Preferably, the power module includes an additional tube, one end of the additional tube is connected to the middle catheter to form a Y-shaped tube structure, and the other end of the additional tube is detachably connected to a first bladder capable of elastic deformation.

[0008] Preferably, the power module includes a second bladder capable of elastic deformation, the first bladder is located in the middle section of the middle catheter, and both ends of the second bladder are connected to the middle catheter.

[0009] Preferably, the power module includes a pump, which is located in the middle section of the intermediate catheter and is connected to the intermediate catheter at both ends thereof.

[0010] Preferably, the pump is a peristaltic pump.

[0011] Preferably, the anti-backflow structure includes two one-way valves, which are respectively installed at both ends of the intermediate catheter.

[0012] Preferably, filters are installed at both ends of the intermediate catheter or at one end thereof close to the abdominal puncture catheter.

[0013] Preferably, the filter is a bacteria filter.

[0014] Due to the adoption of the above structure, the beneficial effects of the present invention are as follows:

[0015] The pleural effusion autologous drainage device of the present invention is inserted into the patient's thoracic cavity through the thoracic puncture catheter, and the abdominal puncture catheter is inserted into the patient's abdominal cavity through ultrasound-guided abdominal puncture. At the same time, the thoracic puncture catheter and the abdominal puncture catheter are connected through the intermediate catheter. When pleural effusion appears in the patient's thoracic cavity, the pleural effusion is led out through the thoracic puncture catheter under the restriction of gravity, thoracic cavity pressure and one-way valve, and then is introduced into the abdominal cavity through the intermediate catheter and the abdominal puncture catheter in sequence. The peritoneal cavity has a huge area and can absorb and process the introduced liquid to a certain extent, which helps to maintain the fluid balance in the patient's body and enables the pleural effusion to be treated more effectively. During the above drainage process, on the one hand, since the pleural effusion is no longer discharged outside the body, the problem that a large amount of protein is discharged outside the body along with the pleural effusion caused by traditional thoracic drainage is avoided, the loss of protein is significantly reduced, which helps to maintain the protein level in the patient's body, breaks the vicious cycle of hypoprotein-pleural effusion-pleural effusion drainage-hypoprotein, and reduces the proportion of patients who cannot be discharged from the hospital for a long time due to intractable pleural effusion; at the same time, the symptoms such as physical weakness caused by protein loss are alleviated, thereby enhancing the patient's physical function and promoting the patient's recovery. At the same time, autologous drainage avoids external connection of the pipeline, reduces the infection risk of external drainage, can be indwelled for a long time and is hermetically treated, and the operation is simple, so that the patient can conveniently perform the drainage operation outside the hospital, increases the survival time outside the hospital, and enables the patient to live and recover in a more comfortable environment. In addition, whether it is to reduce the patient's hospital stay and reduce the use of albumin; or to avoid repeated replacement of the drainage bottle and reduce infection complications, thereby reducing the probability of using antibiotics; all reduce the patient's treatment cost and economic burden.

[0016] Through the following description and in combination with the accompanying drawings, the present invention will become clearer. These drawings are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure when the first embodiment of the present invention is in use;

[0019] Figure 2 It is a partial enlarged view of part A of the first embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the overall structure of the third embodiment of the present invention.

[0022] Reference numerals: thoracentesis catheter - 1, abdominocentesis catheter - 2, intermediate catheter - 3, one - way valve - 4, filter - 5, additional tube - 6, first bladder - 7, second bladder - 8, pump - 9. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] Embodiment 1

[0025] Please refer to Figure 1 and Figure 2 , the pleural effusion autologous drainage device provided in this embodiment includes a thoracentesis catheter 1 and an abdominocentesis catheter 2; a pipeline is formed by connecting the thoracentesis catheter 1 and the abdominocentesis catheter 2 through an intermediate catheter 3, which can drain pleural effusion from the thoracic cavity to the abdominal cavity. An anti - reverse flow structure is provided on the pipeline to prevent the liquid in the abdominal cavity from flowing back, ensuring that the pleural effusion flows unidirectionally from the thoracic cavity to the abdominal cavity.

[0026] When in use in this embodiment, the thoracic puncture catheter 1 and the abdominal puncture catheter 2 are connected and communicated through the intermediate catheter 3, and under ultrasonic guidance, the thoracic puncture catheter 1 and the abdominal puncture catheter 2 are respectively inserted into the thoracic cavity and abdominal cavity of the patient. When there is pleural effusion in the patient's thoracic cavity, the pleural effusion is led out from the thoracic puncture catheter 1 under the action of gravity, thoracic cavity pressure, etc. and the restriction of the one-way valve 4, and then flows unidirectionally into the abdominal cavity through the intermediate catheter 3 and the abdominal puncture catheter 2 in sequence, and is absorbed and processed to a certain extent by the peritoneal cavity with a larger area than the thoracic cavity, thereby constructing a thoracic-abdominal autologous drainage path to realize the reabsorption of pleural effusion, without the need to drain the pleural effusion out of the body, significantly reducing protein loss and improving the patient's body fluid balance. The pleural effusion is more effectively processed, the patient's condition is better controlled, thereby enhancing the patient's physical function, promoting the patient's recovery, reducing the frequency of repeated hospitalization of the patient due to repeated occurrence of pleural effusion, helping to reduce the patient's medical cost, and reducing the economic burden on the patient and his family. In addition, since the pleural effusion flows directly from the thoracic cavity through the thoracic puncture catheter 1, the intermediate catheter 3, and the abdominal puncture catheter 2 into the abdominal cavity, it avoids external drainage bottles for the pipeline, reduces the infection risk of external drainage, the pipeline can be indwelled for a long time and sealed, and the operation is simpler, enabling the patient to conveniently perform drainage operations outside the hospital, increasing the survival time outside the hospital, and enabling the patient to live and recover in a more comfortable environment. In addition, whether it is reducing the patient's hospitalization time and reducing the supplementary use of albumin; or avoiding the repeated replacement of the drainage bottle and reducing infection complications, thereby reducing the probability of using antibiotics; all reduce the patient's treatment cost and economic burden.

[0027] Optionally, the thoracic puncture catheter 1, the abdominal puncture catheter 2, and the intermediate catheter 3 are all silicone hoses with a diameter of 2 mm, which can effectively balance the drainage efficiency and tissue damage. Moreover, the surfaces of the thoracic puncture catheter 1, the abdominal puncture catheter 2, and the intermediate catheter 3 are all coated with an antibacterial coating, which can effectively reduce the infection risk and extend the indwelling time.

[0028] A further improvement lies in that a power module for changing the drainage speed is provided on the intermediate catheter 3. When the autologous drainage efficiency is low (such as in the case of less pleural effusion volume and low thoracic cavity pressure, etc.), the power module can be used to assist in enhancing the drainage speed to ensure that the pleural effusion is timely and effectively drained into the abdominal cavity.

[0029] Preferably, the thoracic puncture catheter 1, the abdominal puncture catheter 2, the intermediate catheter 3, and the power module are connected to each other by threads or buckles or Luer connections to form a detachable assembled structure, which is convenient for the patient and medical staff to use flexibly and for the replacement and maintenance of each component, thereby effectively improving the stability of the performance of the pleural effusion autologous drainage device of the present invention, enabling it to maintain a good working state for a long time, thereby extending the service life of the device, reducing the patient's treatment cost, and when necessary, the intermediate catheter 3 can be removed and the pleural effusion can be directly drained to the outside of the body through the thoracic puncture catheter 1 to meet the treatment needs of different patients.

[0030] A further improvement is that the power module includes an additional tube 6. One end of the additional tube 6 is connected to the intermediate catheter 3 in a communicating manner to form a Y-shaped tube structure. Moreover, a first bladder 7 capable of elastic deformation is detachably connected to the other end of the additional tube 6. The first bladder 7 is an elastic balloon. When the thoracic pressure is smaller than the abdominal pressure, the first bladder 7 is squeezed to cause elastic deformation and change its internal pressure, which can assist in enhancing the drainage speed and ensure that the pleural effusion is timely and effectively drained into the abdominal cavity.

[0031] Preferably, the first bladder 7 is detachably connected to the additional tube 6 in a detachable and communicating manner by means of screw connection or the like, thereby forming a separable structure. On the one hand, it is convenient to detach the first bladder 7 from the additional tube 6 to sample the liquid in the pipeline or, when necessary, drain the pleural effusion through the thoracentesis catheter 1, part of the intermediate catheter 3, and the additional tube 6 to the outside of the body. On the other hand, when the patient sleeps and rests, the first bladder 7 can be detached from the additional tube 6 and the additional tube 6 can be blocked by means of tape or a prefabricated sealing plug, etc., so as to avoid the relatively large first bladder 7 from interfering with the patient's sleep and rest and effectively improve the patient's quality of life.

[0032] It can be understood that in this embodiment, the first bladder 7 can also be replaced by other devices that can change the internal pressure of the channel, such as a syringe, etc.

[0033] A further improvement is that the anti-reflux structure includes two one-way valves 4, such as a spring one-way valve or a one-way valve flap, etc. The two one-way valves 4 are respectively installed at both ends of the intermediate catheter 3.

[0034] On the one hand, when the thoracic pressure is smaller than the abdominal pressure, the one-way valve 4 installed at one end of the intermediate catheter 3 close to the abdominal puncture catheter 2 can prevent the liquid in the abdominal cavity from flowing back into the thoracentesis catheter 1 and the thoracic cavity. On the other hand, when the first bladder 7 is squeezed and deformed, the one-way valve 4 installed at one end of the intermediate catheter 3 close to the thoracentesis catheter 1 can prevent the liquid in the pipeline from flowing in the direction close to the thoracentesis catheter 1, so that the pressure generated by the first bladder 7 can better drive the liquid in the pipeline to flow in the abdominal cavity direction.

[0035] A further improvement is that filters 5 are installed at both ends of the intermediate catheter 3 or at one end thereof close to the abdominal puncture catheter 2.

[0036] Preferably, in this embodiment, the number of the filters 5 is two, which are respectively installed at both ends of the intermediate catheter 3. On the one hand, it can form a double filtration structure to more effectively filter bacteria in the pleural effusion and ensure the safety and pollution-free of the liquid introduced into the abdominal cavity. On the other hand, it can respectively block external bacteria and other pollutants from entering the thoracic cavity and the abdominal cavity when the first bladder 7 is removed.

[0037] Preferably, the filter 5 is detachably mounted on the intermediate conduit 3 by means of threaded connection or the like, facilitating the replacement or cleaning of the filter 5 to ensure its filtering effect.

[0038] A further improvement lies in that the filter 5 is a bacteria filter which uses a polyethersulfone filter membrane with a pore size of 0.22 μm, which can effectively intercept bacteria while allowing pleural effusion and protein to pass through.

[0039] For further explanation, this embodiment also provides a method for using the pleural effusion autologous drainage device, which is as follows:

[0040] Under ultrasonic guidance, the thoracentesis catheter 1 is implanted into the patient's chest cavity and the abdominocentesis catheter 2 is implanted into the patient's abdominal cavity. The pleural effusion flows unidirectionally from the patient's chest cavity into the abdominal cavity through the thoracentesis catheter 1, the intermediate conduit 3, and the abdominocentesis catheter 2 in sequence;

[0041] Observe the flow rate of the pleural effusion. If it is found that the flow rate of the pleural effusion is too low, squeeze the first bladder 7 to assist in enhancing the drainage rate of the pleural effusion, and the magnitude of the squeezing force can be adjusted as needed to dynamically adjust the pressure driving the liquid flow;

[0042] Periodically, the first bladder 7 is detached from the additional tube 6 so that the liquid filtered by the filter 5 can flow out of the additional tube 6 for sampling and detection. If the detection result shows that the bacterial content in the sample exceeds the preset value, the filter 5 or the filter membrane of the filter 5 is cleaned or replaced.

[0043] Embodiment Two

[0044] Please refer to Figure 3 , the difference between this embodiment and Embodiment One is:

[0045] In this embodiment, the power module includes a second bladder 8 capable of elastic deformation. The second bladder 8 is located in the middle section of the intermediate conduit 3 and both ends of the second bladder 8 communicate with the intermediate conduit 3. The second bladder 8 is an elastic balloon. Squeezing the second bladder 8 to cause its elastic deformation and change its internal pressure can assist in enhancing the drainage rate and ensure that the pleural effusion is promptly and effectively drained into the abdominal cavity.

[0046] Optionally, the number of the filters 5 is one, which is installed at one end of the intermediate conduit 3 close to the abdominocentesis catheter 2, and can effectively filter bacteria in the pleural effusion to ensure the safety and pollution-free of the liquid introduced into the abdominal cavity;

[0047] Optionally, the number of the filters 5 is two, which are respectively installed at both ends of the intermediate conduit 3 to form a double filtration structure, and can more effectively filter bacteria in the pleural effusion to further ensure the safety and pollution-free of the liquid introduced into the abdominal cavity.

[0048] Embodiment Three

[0049] Please refer to Figure 4 , the difference between this embodiment and the first embodiment is that:

[0050] In this embodiment, the power module includes a pump 9, which is located in the middle section of the intermediate conduit 3 and is connected to the intermediate conduit 3 at both ends thereof. It can convert electrical energy into mechanical energy according to preset parameters, saving manpower and accurately regulating the flow rate of pleural effusion, so as to drive the pleural effusion to continuously and stably drain from the chest cavity to the abdominal cavity.

[0051] Further improvement lies in that the pump 9 is a peristaltic pump. The roller of the peristaltic pump head squeezes the intermediate conduit 3, causing the intermediate conduit 3 to undergo elastic deformation and form a negative pressure, thereby driving the fluid to flow towards the abdominal cavity.

[0052] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the devices and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A pleural effusion autologous drainage device, comprising a thoracentesis catheter (1) and an abdominocentesis catheter (2); characterized in that: The thoracic puncture catheter (1) and the abdominal puncture catheter (2) are connected and communicated through an intermediate catheter (3) to form a pipeline capable of guiding pleural effusion from the thoracic cavity to the abdominal cavity, and an anti-reflux structure is arranged on the pipeline.

2. The pleural effusion autologous drainage device according to claim 1, characterized in that: A power module for changing the drainage speed is arranged on the intermediate catheter (3).

3. The pleural effusion autologous drainage device according to claim 2, wherein: The power module includes an additional tube (6). One end of the additional tube (6) is connected and communicated with the intermediate catheter (3) to form a Y-shaped tube structure, and the other end of the additional tube (6) is detachably connected with a first bladder (7) capable of elastically deforming.

4. The pleural effusion autologous drainage device according to claim 2, wherein: The power module includes a second bladder (8) capable of elastically deforming. The second bladder (8) is located in the middle section of the intermediate catheter (3), and both ends of the second bladder (8) are communicated with the intermediate catheter (3).

5. The pleural effusion autologous drainage device according to claim 2, wherein: The power module includes a pump (9). The pump (9) is located in the middle section of the intermediate catheter (3), and both ends of the pump (9) are respectively connected with the intermediate catheter (3).

6. The pleural effusion autologous drainage device according to claim 5, characterized in that: The pump (9) is a peristaltic pump.

7. The pleural effusion autologous drainage device according to any one of claims 1 to 6, characterized in that: The anti-reflux structure includes two one-way valves (4), and the two one-way valves (4) are respectively installed at both ends of the intermediate catheter (3).

8. The pleural effusion autologous drainage device according to any one of claims 1 to 6, characterized in that: A filter (5) is installed at both ends of the intermediate catheter (3) or at one end thereof close to the abdominal puncture catheter (2).

9. The pleural effusion autologous drainage device according to claim 8, characterized in that: The filter (5) is a bacteria filter.

Images