Abdominocentesis flushing drainage device

Abstract

The invention relates to the technical field of medical instruments, and provides an abdominal puncture flushing drainage device which comprises a drainage tube and a flushing tube, the drainage tube comprises a tube wall, a drainage cavity is defined by the tube wall, a drainage opening is formed in one end of the drainage tube, the flushing tube is arranged in the drainage cavity, and one end of the flushing tube penetrates out of the drainage opening and is arranged outside the drainage tube; the flushing pipe is connected with the drainage opening through a filtering mechanism, a plurality of first channels and a plurality of second channels are formed in the pipe wall, a plurality of first liquid discharging openings are formed in the pipe wall, the first liquid discharging openings are communicated with the second channels, the second channels are communicated with the first channels, and the first channels are communicated with an injector; the side, facing the drainage cavity, of the pipe wall is provided with a plurality of overflow ports and a plurality of flow channels. By the adoption of the structure, large tissue fragments are prevented from entering the drainage tube, blood clots, fibrin, pus and other substances can be prevented from being accumulated in the tube by operating the injector, and the drainage tube does not need to be frequently flushed and replaced in vitro.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an abdominal puncture irrigation and drainage device. Background Art

[0002] Biliary fistula, pancreatic fistula, intestinal fistula, etc. are common complications in general surgery. If not treated in time, they are likely to lead to serious complications and consequences such as abdominal infection and bleeding, and even endanger the life of the patient.

[0003] In the treatment of biliary fistula, pancreatic fistula, and intestinal fistula, the most commonly used and effective treatment is abdominal irrigation and drainage. Existing abdominal puncture irrigation and drainage devices usually include an irrigation tube and a drainage tube. The two tubes are sleeved with each other, and one end is placed in the abdominal cavity. The irrigation tube guides the irrigation fluid into the patient's abdominal cavity, and the drainage tube drains the drainage fluid containing substances such as blood clots, fibrin deposits, tissue fragments, and pus.

[0004] However, during the irrigation and drainage process, substances such as blood clots, fibrin deposits, and tissue fragments in the drainage fluid are likely to accumulate in the lumen of the tube, resulting in blockage of the drainage tube, which requires frequent flushing and replacement of the drainage tube, and is likely to increase the risk of infection. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an abdominal puncture irrigation and drainage device. The present invention combines a filtering mechanism to prevent large tissue fragments in the abdominal cavity from entering the drainage tube, and drains the liquid through the first channel and the second channel to flush the inside of the drainage tube, and processes blood clots, fibrin, and pus, etc., to prevent accumulation. The present invention aims to solve the technical problem that the drainage tube in the existing abdominal puncture irrigation and drainage device is easily blocked and requires frequent manual cleaning and replacement.

[0006] To achieve the above purpose, the present invention is realized by the following technical solutions:

[0007] An abdominal puncture irrigation and drainage device includes a drainage tube and an irrigation tube. The drainage tube includes a tube wall, and the tube wall encloses a drainage cavity. One end of the drainage tube is provided with a drainage opening. The irrigation tube is arranged in the drainage cavity. One end of the irrigation tube protrudes outside the drainage opening. The end of the irrigation tube outside the drainage tube is connected to the drainage opening through a filtering mechanism. A plurality of first channels and a plurality of second channels are arranged in the tube wall. A plurality of first liquid discharge ports are arranged on the tube wall. The first liquid discharge ports communicate with the second channels. One end of the second channel facing away from the first liquid discharge port communicates with the first channel. One end of the first channel facing away from the second channel communicates with a syringe, so that liquid can be injected into the first channel through the syringe, pass through the second channel, and flow into the abdominal cavity from the first liquid discharge port. A plurality of overflow ports and a plurality of flow channels are arranged on the side of the tube wall facing the drainage cavity. The overflow ports communicate the drainage cavity and the second channels. The flow channels communicate the drainage cavity and the first channels. The inner diameter of the first channel is larger than that of the second channel.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the filtering mechanism, the irrigation tube introduces the irrigation liquid into the abdominal cavity, and after abdominal cavity irrigation, drainage liquid is formed. When the drainage liquid flows back into the drainage cavity, it passes through the filtering mechanism, preventing large tissue fragments from entering the drainage tube and causing accumulation and blockage; By setting the first channel and the second channel, heparinized saline or fibrinolytic enzyme solution can be introduced into the abdominal cavity to perform targeted treatment on substances such as blood clots, fibrin, and pus. And through a plurality of the overflow ports and a plurality of the flow channels, the liquid in the first channel and the second channel is fully introduced into the drainage cavity. By operating the syringe, it is possible to prevent substances such as blood clots, fibrin, and pus from accumulating in the tube, without the need to frequently flush and replace the drainage tube outside the body, the operation is more flexible and convenient, and the infection risk can be reduced.

[0009] Furthermore, the inner diameter ratio range of the first channel to the second channel is 2:1 to 3:1, and the inner diameter ratio range of the first channel to the flow channel is 1:1.5 to 1:2.

[0010] Furthermore, a valve is arranged at one end of the flow channel close to the first channel.

[0011] Furthermore, the second channel is in a spiral shape surrounding the drainage cavity.

[0012] Furthermore, the filtering mechanism includes a filter screen and a fixing head. The fixing head connects the irrigation tube and the filter screen. One end of the filter screen facing away from the fixing head is connected to the drainage opening.

[0013] Furthermore, the filter screen is in a shuttle shape, and the fixing head is in a conical shape.

[0014] Further, a blockage prevention head is sleeved on the drainage tube. A buffer cavity is arranged in the blockage prevention head. The first liquid discharge port communicates with the buffer cavity. A plurality of second liquid discharge ports are formed in the blockage prevention head and communicate with the buffer cavity, so that after the liquid enters the buffer cavity from the first liquid discharge port, it then enters the abdominal cavity from the second liquid discharge ports.

[0015] Still further, an injection part is connected to the outer side wall of the drainage tube. An injection cavity is arranged in the injection part. A first injection port is arranged on the drainage tube. The first channel communicates with the injection cavity through the first injection port. The injection cavity communicates with the syringe. One end of the flushing tube facing away from the filtering mechanism passes through the tube wall and the injection part and is located outside the injection part.

[0016] Further, an external fixation mechanism is sleeved on the drainage tube. The external fixation mechanism is located between the injection part and the filtering mechanism. The external fixation mechanism includes an expansion bladder, a fixing frame and a fixing ring. The expansion bladder is sleeved on the drainage tube. The fixing ring is sleeved on the expansion bladder. The fixing ring is connected to the fixing frame.

[0017] Still further, an internal fixation mechanism is sleeved on the drainage tube. The internal fixation mechanism is located between the external fixation mechanism and the filtering mechanism. The internal fixation mechanism includes a mounting ring, a receiving shell, a plurality of elastic skeletons and a plurality of connecting membranes. The mounting ring is sleeved on the drainage tube. The receiving shell is detachably connected to the mounting ring. A plurality of the elastic skeletons are connected to the mounting ring. The receiving shell is used for receiving a plurality of the elastic skeletons. Connecting membranes are connected between adjacent elastic skeletons, so that when the internal fixation mechanism is placed in the abdominal cavity, a plurality of the elastic skeletons unfold and drive a plurality of the connecting membranes to open. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the first perspective of the abdominal cavity puncture flushing and drainage device in the embodiment of the present invention;

[0019] Figure 2 It is a partial sectional structural diagram of the abdominal cavity puncture flushing and drainage device in the embodiment of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the first channel and the second channel in the abdominal cavity puncture flushing and drainage device in the embodiment of the present invention;

[0021] Figure 4 It is a schematic structural diagram of the second perspective of the abdominal cavity puncture flushing and drainage device in the embodiment of the present invention;

[0022] Figure 5This is a schematic structural diagram of the in-vivo fixation mechanism in the abdominal puncture irrigation and drainage device in the embodiment of the present invention;

[0023] Figure 6 This is a schematic working diagram of the expansion bladder in the abdominal puncture irrigation and drainage device in the embodiment of the present invention;

[0024] Main element symbol description:

[0025]

[0026]

[0027] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0028] To facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention is more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] Please refer to Figures 1 to 5, the peritoneal puncture irrigation and drainage device in the embodiments of the present invention includes a drainage tube 100 and an irrigation tube 200. The drainage tube 100 includes a tube wall 101, and the tube wall 101 encloses a drainage cavity 102. One end of the drainage tube 100 is provided with a drainage opening 103. The irrigation tube 200 is disposed in the drainage cavity 102. One end of the irrigation tube 200 protrudes outside the drainage opening 103. A filtering mechanism is connected between the end of the irrigation tube 200 outside the drainage tube 100 and the drainage opening 103. The filtering mechanism includes a fixed head 310 and a filter screen 320. The fixed head 310 connects the irrigation tube 200 and the filter screen 320. One end of the filter screen 320 facing away from the fixed head 310 is connected to the drainage opening 103. The filter screen 320 is spindle-shaped, and the fixed head 310 is conical. Preferably, the inner side of the tube wall 101 is coated with a superhydrophilic anti-protein coating to reduce the deposition of blood clots and fibrin. The pore diameter of the filter screen 320 is 50 μm to 100 μm. The material of the filter screen 320 is nitinol alloy, and the surface is coated with an antibacterial silver nano-coating, which can effectively reduce the risk of biofilm formation and has a better filtering effect. The fixed head 310 is conical, specifically, it gradually increases from the end away from the irrigation tube 200 to the end close to the irrigation tube 200, which is beneficial to make the peritoneal puncture irrigation and drainage device enter the abdominal cavity more smoothly during the puncture process. The fixed head 310 connects the irrigation tube 200 and can fix the position of the irrigation tube 200. Further, the fixed head 310 is located at the tip of the spindle shape, which is beneficial to keep the end of the irrigation tube 200 connected to the fixed head 310 at the central position of the drainage cavity 102, avoiding the irrigation tube 200 sticking to the inner wall of the drainage tube 100 and avoiding affecting the liquid flow in the drainage tube 100. It can be understood that the irrigation fluid is injected into the abdominal cavity from the irrigation tube 200, forms drainage fluid after flushing in the abdominal cavity, the drainage fluid enters the drainage cavity 102 through the filtering mechanism, and flows out of the abdominal cavity through the end of the drainage tube 100 away from the filtering mechanism. The filtering mechanism can block large tissue fragments outside the drainage tube 100, avoiding large tissues entering the tube and causing blockage. And the filter screen 320 is spindle-shaped with a large surface area, which can make the drainage fluid enter the drainage tube 100 from more positions and improve the drainage efficiency.

[0032] A plurality of first channels 110 and a plurality of second channels 120 are provided inside the pipe wall 101. The second channels 120 are in a spiral shape surrounding the drainage cavity 102. A plurality of first liquid discharge ports 130 are provided on the pipe wall 101. The first liquid discharge ports 130 communicate with the second channels 120. One end of the second channels 120 facing away from the first liquid discharge ports 130 communicates with the first channels 110. Preferably, heparinized saline or fibrinolytic enzyme solution is accommodated in the first channels 110 and the second channels 120, which is beneficial to reducing blood clots and fibrin, and is beneficial to diluting pus. Specifically, a fibrinolytic enzyme solution is used in this embodiment. It can be understood that through the first channels 110 and the second channels 120, solutions for specifically treating blood clots, fibrin and pus are accommodated and drained, which is beneficial to reducing the risk of accumulation of blood clots, fibrin and pus in the drainage tube 100.

[0033] One end of the first channels 110 facing away from the second channels 120 communicates with a syringe 510, so that liquid can be injected into the first channels 110 through the syringe 510, pass through the second channels 120, and flow into the abdominal cavity from the first liquid discharge ports 130. An injection part 500 is connected to the outer wall of the drainage tube 100. An injection cavity is provided inside the injection part 500. A first injection port is provided on the drainage tube 100. The first channels 110 communicate with the injection cavity through the first injection port. The injection cavity communicates with the syringe 510. One end of the flushing tube 200 facing away from the filtering mechanism passes through the pipe wall 101 and the injection part 500 and is located outside the injection part 500. Preferably, the injection part 500 is annular, the injection cavity is annular, the syringe 510 is a constant pressure syringe, and the injection pressure is adjustable. The injection part 500 also has the function of fixing the flushing tube 200. It can be understood that through the syringe 510, the flow rate and pressure of the solution in the first channels 110 and the second channels 120 can be independently controlled, which is beneficial to dissolving, inhibiting, flushing and other treatments of the substances in the drainage tube 100 according to the situation in the drainage tube 100 without being affected by the abdominal cavity flushing process, so as to more flexibly prevent blockage.

[0034] A plugging prevention head 400 is sleeved outside the drainage tube 100. A buffer cavity 401 is arranged inside the plugging prevention head 400. The first liquid discharge port 130 communicates with the buffer cavity 401. A plurality of second liquid discharge ports 410 are formed in the plugging prevention head 400 and communicate with the buffer cavity 401, so that after the liquid enters the buffer cavity 401 from the first liquid discharge port 130, it then enters the abdominal cavity from the second liquid discharge ports 410. Preferably, the plugging prevention head 400 is annular and sleeved outside the drainage tube 100. The buffer cavity 401 is an annular cavity. The plurality of second liquid discharge ports 410 are distributed on the side wall of the plugging prevention head 400 and on the end face of the plugging prevention head 400 facing the filtering mechanism. The number of the second liquid discharge ports 410 is greater than that of the first liquid discharge port 130. It can be understood that the fibrinolytic enzyme solution in the first channel 110 and the second channel 120 enters the buffer cavity 401 and then enters the abdominal cavity through the plurality of second liquid discharge ports 410 distributed on different planes, releasing the solution to the position of irrigation and drainage, effectively enabling the solution to act at the irrigation and drainage position, reducing the accumulation of substances such as blood clots and fibrin, preventing blockage, and the solution buffers and decelerates in the buffer cavity 401, which can reduce the impact of the solution on the abdominal cavity.

[0035] On one side of the pipe wall 101 facing the drainage cavity 102, a plurality of the overflow ports 121 and a plurality of flow channels 111 are provided. The overflow ports 121 communicate the drainage cavity 102 and the second channel 120. The flow channels 111 communicate the drainage cavity 102 and the first channel 110. A valve 112 is provided inside one end of the flow channel 111 close to the first channel 110. The inner diameter of the first channel 110 is larger than that of the second channel 120. The inner diameter ratio range of the first channel 110 to the second channel 120 is 2:1 to 3:1. The inner diameter ratio range of the first channel 110 to the flow channel 111 is 1:1.5 to 1:2. Preferably, the valve 112 is made of silica gel. The flow channel 111 forms an angle with the central axis of the drainage cavity 102. One end of the flow channel 111 facing away from the valve 112 is far from the filtering mechanism. That is, the setting direction of the flow channel 111 can make the direction of the fibrinolytic enzyme solution entering the drainage cavity 102 consistent with the flowing direction of the drainage fluid, which is beneficial to making the fibrinolytic enzyme solution dredge some of the accumulated substances in the drainage cavity 102 along the flowing direction of the drainage fluid and is beneficial to flushing the inner wall of the drainage tube 100. It can be understood that the plurality of the second channels 120 are spiral, which is beneficial to the overflow ports 121 being more evenly distributed on the pipe wall 101, so that the solution in the second channel 120 enters the drainage cavity 102 evenly. The inner diameter of the first channel 110 is larger than that of the second channel 120. When injecting the solution, making the amount of the injected solution greater than the amount discharged from the second channel 120 can make the solution accumulate in the first channel 110 until the pressure in the first channel 110 increases to push open the valve 112, so that the solution enters the drainage cavity 102 from the flow channel 111.

[0036] An external fixation mechanism is sleeved outside the drainage tube 100. The external fixation mechanism is located between the injection part 500 and the filtration mechanism. The external fixation mechanism includes a fixing frame 600, a fixing ring 610 and an expansion bladder 620. The expansion bladder 620 is sleeved outside the drainage tube 100, and the fixing ring 610 is sleeved outside the expansion bladder 620 to fix the fixing ring 610 when the expansion bladder 620 expands. The fixing ring 610 is connected to the fixing frame 600. An internal fixation mechanism is sleeved outside the drainage tube 100. The internal fixation mechanism is located between the external fixation mechanism and the filtration mechanism. The internal fixation mechanism includes a mounting ring 700, a receiving shell 701, a plurality of elastic skeletons 710 and a plurality of connecting membranes 720. The mounting ring 700 is sleeved on the drainage tube 100. The receiving shell 701 is detachably connected to the mounting ring 700. A plurality of the elastic skeletons 710 are connected to the mounting ring 700. The receiving shell 701 is used to receive the plurality of elastic skeletons 710. The connecting membranes 720 are connected between adjacent elastic skeletons 710 so that when the internal fixation mechanism is placed in the abdominal cavity, the plurality of elastic skeletons 710 unfold and drive the plurality of connecting membranes 720 to open. Preferably, the expansion bladder 620 is a silicone balloon and can be injected with physiological saline to cause it to expand, thereby filling the peritoneal puncture channel and reducing the swing of the drainage tube 100. Please refer to Figure 6 , when the expansion bladder 620 expands, the end sleeved with the fixing ring 610 exerts an extrusion force on the fixing ring 610 from the inside to the outside, forming an interference fit to fix the fixing ring 610. The external fixation mechanism is attached to the skin surface by a hydrocolloid dressing in cooperation with medical tape, nylon straps, etc. to fix the fixing frame 600. The elastic skeleton 710 is made of nickel-titanium memory alloy, and the connecting membrane 720 is made of polycaprolactone. Polycaprolactone can promote tissue ingrowth, enhance the fixing effect, and is easily degradable to avoid adhesion. Please refer to Figure 4 , the receiving shell 701 is annular. When the internal fixation mechanism is not in use, the plurality of elastic skeletons 710 are curled and received in the receiving shell 701. The side wall of the receiving shell 701 blocks the elastic skeletons 710 to prevent them from stretching and opening when not in use. When performing puncture fixation, the receiving shell 701 is disassembled, and the elastic skeletons 710 resume their shape and stretch. It can be understood that the combined action of the external fixation mechanism and the internal fixation mechanism is beneficial to stabilizing the peritoneal puncture irrigation and drainage device and making the irrigation and drainage process more stable.

[0037] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The above-described embodiments merely represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be subject to the appended claims.

Claims

1. An abdominal puncture irrigation and drainage device, characterized in that, It includes a drainage tube and a flushing tube. The drainage tube includes a tube wall, and the tube wall encloses a drainage cavity. One end of the drainage tube is provided with a drainage opening. The flushing tube is arranged in the drainage cavity. One end of the flushing tube protrudes outside the drainage opening. A filtering mechanism is connected between one end of the flushing tube located outside the drainage tube and the drainage opening. A plurality of first channels and a plurality of second channels are arranged in the tube wall. A plurality of first liquid discharge ports are arranged on the tube wall. The first liquid discharge ports communicate with the second channels. One end of the second channel facing away from the first liquid discharge port communicates with the first channel. One end of the first channel facing away from the second channel communicates with a syringe, so that liquid can be injected into the first channel through the syringe, pass through the second channel, and flow into the abdominal cavity from the first liquid discharge port. A plurality of overflow ports and a plurality of flow channels are arranged on one side of the tube wall facing the drainage cavity. The overflow ports communicate the drainage cavity and the second channels. The flow channels communicate the drainage cavity and the first channels. The inner diameter of the first channel is larger than that of the second channel.

2. The abdominal puncture irrigation and drainage device according to claim 1, characterized in that, The inner diameter ratio range of the first channel to the second channel is 2:1 to 3:1, and the inner diameter ratio range of the first channel to the flow channel is 1:1.5 to 1:

2.

3. The peritoneal puncture irrigation and drainage device according to claim 1, wherein, A valve is arranged at one end of the flow channel close to the first channel.

4. The abdominal puncture irrigation and drainage device according to claim 1, wherein, The second channel is in a spiral shape surrounding the drainage cavity.

5. The peritoneal puncture irrigation and drainage device according to claim 1, characterized in that, The filtering mechanism includes a filter screen and a fixing head. The fixing head connects the flushing tube and the filter screen. One end of the filter screen facing away from the fixing head is connected to the drainage opening.

6. The peritoneal puncture irrigation and drainage device according to claim 5, characterized in that, The filter screen is in a shuttle shape, and the fixing head is in a conical shape.

7. The peritoneal puncture irrigation and drainage device according to claim 1, characterized in that, An anti-blocking head is sleeved outside the drainage tube. A buffer cavity is arranged in the anti-blocking head. The first liquid discharge port communicates with the buffer cavity. A plurality of second liquid discharge ports are opened on the anti-blocking head and communicate with the buffer cavity, so that after the liquid enters the buffer cavity from the first liquid discharge port, it then enters the abdominal cavity from the second liquid discharge ports.

8. The peritoneal puncture irrigation and drainage device according to claim 1, wherein An injection part is connected to the outer side wall of the drainage tube. An injection cavity is arranged in the injection part. A first injection port is arranged on the drainage tube. The first channel communicates with the injection cavity through the first injection port. The injection cavity communicates with the syringe. One end of the flushing tube facing away from the filtering mechanism passes through the tube wall and the injection part and is located outside the injection part.

9. The peritoneal puncture irrigation and drainage device according to claim 8, wherein, An external fixing mechanism is sleeved outside the drainage tube. The external fixing mechanism is located between the injection part and the filtering mechanism. The external fixing mechanism includes an expansion bladder, a fixing frame and a fixing ring. The expansion bladder is sleeved outside the drainage tube. The fixing ring is sleeved outside the expansion bladder. The fixing ring is connected to the fixing frame.

10. The peritoneal puncture irrigation and drainage device according to claim 9, characterized in that, The drainage tube is sleeved with an in-vivo fixation mechanism, and the in-vivo fixation mechanism is located between the in-vitro fixation mechanism and the filtering mechanism. The in-vivo fixation mechanism includes a mounting ring, a receiving shell, a plurality of elastic skeletons and a plurality of connecting membranes. The mounting ring is sleeved on the drainage tube, the receiving shell is detachably connected to the mounting ring, a plurality of the elastic skeletons are connected to the mounting ring, the receiving shell is used for accommodating a plurality of the elastic skeletons, and connecting membranes are connected between adjacent elastic skeletons, so that when the in-vivo fixation mechanism is placed in the abdominal cavity, a plurality of the elastic skeletons are unfolded and drive a plurality of the connecting membranes to open.

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