Liver and kidney combined cutting and perfusion pipeline
By designing the ball head and airbag structure at the insertion end of the infusion pipeline, the problem of difficulty in quickly approaching the infusion fluid temperature and easy scratching and falling off in the insertion pipeline is solved, and the effect of temperature matching and structural stability is achieved.
Patent Information
- Application Number
- CN202510252591.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2025-05-30
AI Technical Summary
When inserting an existing perfusion tube into an organ, it is difficult to quickly approach the temperature of the perfusion fluid, resulting in heat and thermal stress damage to local tissues or blood vessels. At the same time, inserting the smooth surface of the pipe can easily cause scratches on the inner wall of the organ and falling off the pipe.
A liver and kidney combined incision perfusion pipeline is designed, adopting a ball head and airbag structure. The ball head prevents scratching of the inner wall of the organ. The airbag quickly approaches the perfusion fluid temperature through inflation, and prevents the pipe from falling off through ligation in the depression area.
The perfusion tube is achieved close to the perfusion fluid temperature in a short time, reducing thermal stress damage, and preventing the internal wall of the organ and the pipe from falling off through the ball head and airbag structure.
Smart Images
Figure CN120053862A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of auxiliary medical devices, and particularly to a perfusion pipeline for combined hepatorenal resection and perfusion. Background Art
[0002] At present, organ transplantation has saved the lives of many patients. Therefore, it is particularly important to make full use of precious donor organs. In the existing medical field, based on artificial maintenance of respiration and heartbeat, brain-dead donors are used for multi-organ combined resection.
[0003] When the existing perfusion pipeline is inserted into an organ, an insertion pipeline with a smooth surface is used to insert into the organ. By injecting liquid into the spherical water bag on the outer wall of the insertion pipeline, the spherical water bag expands to block. The specific heat capacity of the liquid is relatively large. When inserting, the temperature of the liquid in the water bag cannot approach the temperature of the perfusion liquid in a short time, which will lead to the following situations: If the temperature of the perfusion tube is much higher than the temperature of the perfusion liquid (such as the perfusion tube is not pre-cooled), local tissue or blood vessels will be heated during insertion, causing thermal stress damage; inconsistent temperatures may lead to uneven temperature distribution of the perfusion liquid when it enters the organ. Therefore, it is necessary to pre-cool the liquid in the water bag in advance. During the operation, time is crucial. Therefore, if the pre-cooling takes too long, the best time will be missed. And there is an inner mucosa on the inner surface of the organ. In order to prevent scratching the inner wall of the organ, the insertion pipeline is set to have a smooth surface. Therefore, after ligation, during the perfusion process, the insertion pipeline may fall off. Summary of the Invention
[0004] In view of the above problems in the prior art, the present invention is proposed.
[0005] The purpose of the present invention is to provide a perfusion pipeline for combined hepatorenal resection and perfusion, aiming to solve the problem that the conventional perfusion tube cannot approach the temperature of the perfusion liquid in a short time.
[0006] To solve the above technical problems, the present invention provides the following technical solution: A perfusion pipeline for combined hepatorenal resection and perfusion, including a connection unit, which includes a filter, a connecting pipe arranged at the bottom end of the filter, an exhaust pipe and an injection pipe arranged at the top of the filter, an infusion plug arranged at the top end of the injection pipe, and occlusion clips arranged on the connecting pipe, the exhaust pipe and the injection pipe;
[0007] An insertion unit, which includes a fixing pipe, a ball head arranged at one end of the fixing pipe, a receiving groove opened on the outer wall of the fixing pipe, an air bag arranged in the inner cavity of the receiving groove, an inflation pipe arranged on the air bag, and an inflation assembly arranged at the tail end of the fixing pipe;
[0008] One end of the fixing pipe is connected to one end of the connecting pipe.
[0009] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: the airbag includes a first airbag, a second airbag disposed on one side of the inner wall of the first airbag, and a connecting rope disposed between the inner wall of the first airbag and the second airbag.
[0010] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: one end of the air charging pipe is hermetically communicated with the inner wall of the second airbag.
[0011] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: the outer wall of the first airbag is fixed to the inner cavity of the receiving groove.
[0012] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: the air charging assembly includes a sealing cylinder disposed at the top end of the fixed pipe, a fixed cover disposed at the top end of the sealing cylinder, a piston disposed in the inner cavity of the sealing cylinder, and a lead screw threadedly disposed on the inner wall of the fixed cover;
[0013] The bottom end of the lead screw is rotatably connected to the piston, and the inner cavity of the sealing cylinder is communicated with one end of the air charging pipe.
[0014] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: a dial is fixedly connected to the top end of the lead screw.
[0015] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: it further includes an anti-embolism unit, which includes a sealing plug slidably disposed on the inner wall of the ball head, an elastic rope disposed between the inner wall of the ball head and the sealing plug, a through groove opened on the inner wall of the fixed pipe, an adjusting assembly disposed between the sealing cylinder and the fixed pipe, and a connecting assembly disposed between the air charging pipe and the sealing plug.
[0016] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: the adjusting assembly includes an adjusting cap rotatably disposed at the top end of the fixed pipe, a threaded sleeve disposed on the outer wall of the sealing cylinder, and a sealing rubber sleeve disposed on the inner wall of the fixed pipe;
[0017] The sealing rubber sleeve is slidably connected to the sealing cylinder, and the adjusting cap is threadedly connected to the threaded sleeve.
[0018] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, wherein: the connecting assembly includes a fixed sleeve disposed on the outer wall of the air charging pipe, a fixed bracket disposed on the inner wall of the fixed pipe, and a connecting wire disposed at one end of the fixed sleeve;
[0019] One end of the connecting wire is fixedly connected to the outer wall of the sealing plug.
[0020] As a preferred embodiment of the perfusion pipeline for combined liver and kidney harvesting of the present invention, among which: a sealing gasket is provided between the sealing plug and the ball head.
[0021] The beneficial effects of the perfusion pipeline for combined liver and kidney harvesting of the present invention are as follows: By providing a ball head at the top of the insertion end, it can prevent damage to the inner mucosa of the organ pipeline during the insertion process, and by utilizing the fact that the specific heat capacity of air is lower than that of liquid, the airbag can quickly approach the temperature of the perfusion liquid. When the temperature of the fixed tube is the same as that of the perfusion liquid, it can be inserted for perfusion. Moreover, a concave area will be formed between the ball head and the airbag, and ligating in the concave area can prevent the problem of the fixed tube falling off. Description of the Drawings
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0023] Figure 1 It is a schematic structural diagram of the present invention.
[0024] Figure 2 It is a schematic structural diagram of the insertion unit.
[0025] Figure 3 It is a structural sectional view at the ball head.
[0026] Figure 4 For Figure 3 The enlarged structural view at position A in
[0027] Figure 5 For Figure 3 The enlarged structural view at position B in
[0028] Figure 6 It is a schematic structural diagram at the connection component.
[0029] Figure 7 It is a structural sectional view at the top of the fixed tube.
[0030] In the figure: 1. Connection unit; 11. Filter; 12. Connecting pipe; 13. Exhaust pipe; 14. Injection pipe; 15. Infusion plug; 16. Blocking clip; 2. Insertion unit; 21. Fixed pipe; 22. Ball head; 23. Receiving groove; 24. Airbag; 25. Inflation pipe; 26. Inflation assembly; 241. First airbag; 242. Second airbag; 243. Connecting rope; 261. Sealing cylinder; 262. Fixed cover; 263. Piston; 264. Screw rod; 264a. Paddle; 3. Anti-embolism unit; 31. Sealing plug; 32. Elastic rope; 33. Through groove; 34. Adjusting assembly; 35. Connecting assembly; 311. Sealing gasket; 341. Adjusting cap; 342. Threaded sleeve; 343. Sealing rubber sleeve; 351. Fixed sleeve; 352. Fixed bracket; 353. Connecting wire. Detailed implementation mode
[0031] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation mode of the present invention will be given in conjunction with the accompanying drawings of the specification.
[0032] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the description herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.
[0033] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation mode of the present invention. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively mutually exclusive with other embodiments.
[0034] Refer to Figures 1 to 7 , which is the first embodiment of the present invention. This embodiment provides a perfusion pipeline for combined hepatorenal resection, including a connection unit 1, including a filter 11, a connecting pipe 12 provided at the bottom end of the filter 11, an infusion plug 15 provided at the top of the filter 11, an exhaust pipe 13 and an injection pipe 14, an infusion plug 15 provided at the top end of the injection pipe 14, and a blocking clip 16 provided on the connecting pipe 12, the exhaust pipe 13 and the injection pipe 14;
[0035] An insertion unit 2, including a fixed pipe 21, a ball head 22 provided at one end of the fixed pipe 21, a receiving groove 23 opened on the outer wall of the fixed pipe 21, an airbag 24 provided in the inner cavity of the receiving groove 23, an inflation pipe 25 provided on the airbag 24, and an inflation assembly 26 provided at the tail end of the fixed pipe 21;
[0036] One end of the fixed pipe 21 is connected to one end of the connecting pipe 12.
[0037] It should be noted that connecting pipes 12 are fixedly connected to the inner cavities at the top and bottom of the filter 11. An exhaust pipe 13 and an injection pipe 14 are fixedly connected to the inner cavity at the top of the filter 11. The injection pipe 14 is specifically a Y-shaped pipe. An infusion plug 15 is fixedly connected to the top end of the injection pipe 14. Blocking clips 16 are provided on the connecting pipes 12, the exhaust pipe 13, and the injection pipe 14.
[0038] A ball head 22 is fixedly connected to the bottom end of the fixed pipe 21. A storage groove 23 is provided on the outer wall of the fixed pipe 21 and near the ball head 22. An airbag 24 is fixedly adhered to the inner wall of the storage groove 23. An inflation pipe 25 is fixedly connected to the inner cavity of the airbag 24. An inflation assembly 26 is provided at the top end of the fixed pipe 21. The inflation assembly 26 inflates the airbag 24 through the inflation pipe 25.
[0039] During use, the low-temperature perfusion fluid is connected through the infusion plug 15. The perfusion fluid flows out from the fixed pipe 21, and at the same time, the air inside each pipe is discharged. Since the inflation pipe 25 is located in the inner cavity of the fixed pipe 21, and the inner cavities of the inflation pipe 25 and the airbag 24 are both filled with air, and the specific heat capacity of air is lower than that of the liquid, the temperature change will be faster. Therefore, when the perfusion fluid is introduced, the temperature of the insertion unit 2 will quickly approach the temperature of the perfusion fluid.
[0040] Insert the fixed pipe 21. During the insertion process of the ball head 22 at the top of the fixed pipe 21, it can effectively prevent the situation that the top of a conventional cannula scratches the inner wall of the artery during insertion. The insertion length is about 4 - 8 cm. Then, the airbag 24 is inflated through the inflation assembly 26 to block the artery, and ligation is performed in the depression formed between the airbag 24 and the ball head 22.
[0041] It should be noted that for renal perfusion: the perfusion fluid is at 4°C, the renal preservation fluid is 3000 ml, and the gravity perfusion height is about 100 cm.
[0042] For portal vein perfusion: first use 2000 ml of renal preservation fluid at 4°C containing 100 mg of heparin, 40 U of insulin, and 1 g of rocephin, and then use 2000 ml of UW solution. The gravity perfusion height is about 100 cm.
[0043] For biliary perfusion: rinse the biliary tract with 250 ml of low-temperature normal saline.
[0044] In summary, by providing a ball head 22 at the top end of the insertion end, it can prevent damage to the inner mucosa of the organ pipe during insertion. And by using the fact that the specific heat capacity of air is lower than that of the liquid, the temperature of the airbag 24 can quickly approach the temperature of the perfusion fluid. When the temperature of the fixed pipe 21 is the same as that of the perfusion fluid, perfusion can be carried out. And a depression area will be formed between the ball head 22 and the airbag 24. Ligation in the depression area can prevent the problem of the fixed pipe 21 falling off.
[0045] Such asFigure 4 As shown, as an alternative embodiment: The airbag 24 includes a first airbag 241, a second airbag 242 disposed on one side of the inner wall of the first airbag 241, and a connecting rope 243 disposed between the inner wall of the first airbag 241 and the second airbag 242;
[0046] One end of the inflatable tube 25 is in sealed communication with the inner wall of the second airbag 242;
[0047] The outer wall of the first airbag 241 is fixed to the inner cavity of the storage groove 23.
[0048] It should be noted that the airbag 24 is composed of a first airbag 241 and a second airbag 242. The second airbag 242 is located inside the first airbag 241, and the edges are adhered to the inner wall of the air inlet part of the first airbag 241, and a number of connecting ropes 243 are fixedly connected between the two.
[0049] During use, when inflated, the second airbag 242 expands and simultaneously squeezes the first airbag 241 outward, causing the first airbag 241 to expand and achieve a blocking effect. When contracting, the second airbag 242 will contract first, and pull the first airbag 241 to contract to the inner wall of the storage groove 23 through the connecting rope 243.
[0050] In summary, when the second airbag 242 contracts, it pulls the first airbag 241 to contract to the inner wall of the storage groove 23 through the connecting rope 243, which can prevent the first airbag 241 in the contracted state from scraping the inner wall of the organ, and setting the airbag 24 to a double layer can prevent missing the best time when replacing the perfusion pipeline when a single layer is damaged.
[0051] As Figures 1 to 7 As shown, as an alternative embodiment: The inflation assembly 26 includes a sealing cylinder 261 disposed at the top of the fixed tube 21, a fixed cover 262 disposed at the top of the sealing cylinder 261, a piston 263 disposed in the inner cavity of the sealing cylinder 261, and a lead screw 264 threadedly disposed on the inner wall of the fixed cover 262;
[0052] The bottom end of the lead screw 264 is rotatably connected to the piston 263, and the inner cavity of the sealing cylinder 261 is in communication with one end of the inflatable tube 25;
[0053] The top end of the lead screw 264 is fixedly connected with a dial 264a.
[0054] It should be noted that the sealing cylinder 261 is hermetically disposed at the top of the fixed tube 21. The top of the sealing cylinder 261 is fixedly connected with a fixed cover 262. There is a through hole at the top of the fixed cover 262. The inner wall of the fixed cover 262 is threadedly connected with a lead screw 264. The bottom end of the lead screw 264 is rotatably connected with a piston 263, and the piston 263 and the inner wall of the sealing cylinder 261 are in sealed sliding.
[0055] During use, pinch the sealing cylinder 261 and rotate the paddle 264a to drive the lead screw 264 to rotate. The lead screw 264 is threadedly connected to the fixed cover 262. Therefore, when the lead screw 264 rotates, it will push the piston 263 to slide within the sealing cylinder 261, achieving inflation and deflation of the airbag 24.
[0056] As Figures 3 to 7 shown, as a preferred embodiment: it further includes an anti-embolism unit 3, which includes a sealing plug 31 slidably disposed on the inner wall of the ball head 22, an elastic cord 32 disposed between the inner wall of the ball head 22 and the sealing plug 31, a through groove 33 opened on the inner wall of the fixed tube 21, an adjusting assembly 34 disposed between the sealing cylinder 261 and the fixed tube 21, and a connecting assembly 35 disposed between the inflatable tube 25 and the sealing plug 31.
[0057] It should be noted that the sealing plug 31 is slidably connected to the inner wall of the ball head 22, and an elastic cord 32 is disposed between the sealing plug 31 and the ball head 22. The elastic cord 32 pulls the sealing plug 31 to seal the ball head 22 under normal conditions. And a through groove 33 is opened on the inner wall of the fixed tube 21, and the width of the through groove 33 is greater than the thickness of the tail of the sealing plug 31. Therefore, when the tail of the sealing plug 31 moves within the range of the through groove 33, the ball head 22 will be opened. The adjusting assembly 34 is located between the sealing cylinder 261 and the fixed tube 34 and is connected to the sealing plug 31 through the connecting assembly 35. The adjusting assembly 34 can pull the sealing plug 31 to move through the connecting assembly 35.
[0058] During use, before perfusion, the perfusion fluid enters the pipeline. Since the ball head 22 is in a blocked state, the perfusion fluid will not flow out. When the pipeline is filled with the perfusion fluid, the sealing plug 31 can be pulled to the through groove 33 through the adjusting assembly 34 to open the ball head 22, and the perfusion fluid flows out, taking out the air in the pipeline at the same time. Then close the ball head 22, pre-cool the insertion end with the perfusion fluid. When perfusion is required, insert it into the organ pipeline for perfusion.
[0059] In summary, by discharging some of the perfusion fluid in advance, the air in the pipeline can be discharged, preventing the problem of air remaining in the pipeline and mixing into the perfusion fluid, resulting in vascular embolism and affecting organ blood supply. And introducing the perfusion fluid in advance can pre-cool the insertion end, reducing the preparation time before perfusion and reducing the impact of the preparation intubation time on the surgical outcome.
[0060] As a preferred embodiment: the adjusting assembly 34 includes an adjusting cap 341 rotatably disposed at the top of the fixed tube 21, a threaded sleeve 342 disposed on the outer wall of the sealing cylinder 261, and a sealing rubber sleeve 343 disposed on the inner wall of the fixed tube 21;
[0061] The sealing rubber sleeve 343 is slidably connected to the sealing cylinder 261, and the adjusting cap 341 is threadedly connected to the threaded sleeve 342.
[0062] It should be noted that the top of the fixed pipe 21 is rotatably connected with an adjusting cap 341. A threaded sleeve 342 is fixedly connected to the outer wall of the sealing cylinder 261. A sealing rubber sleeve 343 is filled between the fixed pipe 21 and the sealing cylinder 261. The sealing rubber sleeve 343 and the sealing cylinder 261 are in sealed sliding connection. The sealing rubber sleeve 343 is fixedly embedded in the inner cavity of the fixed pipe 21. The adjusting cap 341 and the threaded sleeve 342 are in threaded connection.
[0063] During use, hold the fixed pipe 21 by hand and rotate the adjusting cap 341. The adjusting cap 341 and the threaded sleeve 342 are in threaded connection, while the sealing cylinder 261 cannot rotate under the fixing action of the sealing rubber sleeve 343. Therefore, a relative displacement is formed between the adjusting cap 341 and the threaded sleeve 342 and the fixed pipe 21, and the inflation pipe 25 is pulled up and down.
[0064] As a preferred embodiment: The connecting assembly 35 includes a fixed sleeve 351 arranged on the outer wall of the inflation pipe 25, a fixed bracket 352 arranged on the inner wall of the fixed pipe 21, and a connecting line 353 arranged at one end of the fixed sleeve 351;
[0065] One end of the connecting line 353 is fixedly connected to the outer wall of the sealing plug 31;
[0066] A sealing gasket 311 is arranged between the sealing plug 31 and the ball head 22.
[0067] It should be noted that the fixed sleeve 351 is fixedly installed on the outer wall of the inflation pipe 25. The fixed bracket 352 is fixedly connected to the inner wall of the fixed pipe 21. The fixed sleeve 351 slides on the fixed bracket 352. A connecting line 353 is arranged between the fixed sleeve 351 and the sealing plug 31.
[0068] During use, the sealing cylinder 261 moves to pull the fixed sleeve 351 to move on the fixed bracket 352 through the inflation pipe 25, and then the sealing plug 31 is pulled to move through the connecting line 353, so as to open the ball head 22.
[0069] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.
Claims
1. A liver and kidney combined extraction and perfusion pipeline, characterized in that: include, A connecting unit (1), comprising a filter (11), a connecting tube (12) arranged at the bottom end of the filter (11), an exhaust pipe (13) and an injection pipe (14) arranged at the top of the filter (11), an infusion plug (15) arranged at the top end of the injection pipe (14), and a blocking clamp (16) arranged on the connecting tube (12), the exhaust pipe (13) and the injection pipe (14); The insertion unit (2) comprises a fixing tube (21), a ball head (22) arranged at one end of the fixing tube (21), a receiving groove (23) opened on the outer wall of the fixing tube (21), an air bag (24) arranged in the inner cavity of the receiving groove (23), an inflation tube (25) arranged on the air bag (24), and an inflation assembly (26) arranged at the rear end of the fixing tube (21); The fixed pipe (21) is connected to one end of the connecting pipe (12).
2. The liver-kidney combined extraction and perfusion pipeline according to claim 1, characterized in that: The airbag (24) comprises a first airbag (241), a second airbag (242) arranged on one side of the inner wall of the first airbag (241), and a connecting rope (243) arranged between the inner wall of the first airbag (241) and the second airbag (242).
3. The liver-kidney combined extraction and perfusion circuit according to claim 2, characterized in that: One end of the inflation tube (25) is in sealed communication with the inner wall of the second airbag (242).
4. The combined liver and kidney extraction and perfusion circuit according to claim 2, characterized in that: The outer wall of the first airbag (241) is fixed to the inner cavity of the storage groove (23).
5. The liver-kidney combined extraction and perfusion circuit according to claim 1, characterized in that: The inflation assembly (26) comprises a sealing cylinder (261) arranged at the top end of the fixed tube (21), a fixing cover (262) arranged at the top end of the sealing cylinder (261), a piston (263) arranged in the inner cavity of the sealing cylinder (261), and a screw rod (264) threadedly arranged on the inner wall of the fixing cover (262); The bottom end of the screw rod (264) is rotatably connected to the piston (263), and the inner cavity of the sealing cylinder (261) is connected to one end of the inflation tube (25).
6. The liver-kidney combined extraction and perfusion circuit according to claim 5, characterized in that: A paddle (264a) is fixedly connected to the top end of the screw rod (264).
7. The liver-kidney combined extraction and perfusion circuit according to claim 5, characterized in that: Also includes, The anti-embolism unit (3) comprises a sealing plug (31) slidably arranged on the inner wall of the ball head (22), an elastic rope (32) arranged between the inner wall of the ball head (22) and the sealing plug (31), a through groove (33) opened on the inner wall of the fixed tube (21), an adjustment component (34) arranged between the sealing cylinder (261) and the fixed tube (21), and a connecting component (35) arranged between the inflation tube (25) and the sealing plug (31).
8. The liver-kidney combined extraction and perfusion circuit according to claim 7, characterized in that: The adjustment component (34) comprises an adjustment cap (341) rotatably arranged on the top end of the fixed tube (21), a threaded sleeve (342) arranged on the outer wall of the sealing cylinder (261), and a sealing rubber sleeve (343) arranged on the inner wall of the fixed tube (21); The sealing rubber sleeve (343) and the sealing cylinder (261) are slidably connected, and the adjusting cap (341) and the threaded sleeve (342) are threadedly connected.
9. The liver-kidney combined extraction and perfusion circuit according to claim 7, characterized in that: The connecting assembly (35) comprises a fixing sleeve (351) arranged on the outer wall of the inflation tube (25), a fixing frame (352) arranged on the inner wall of the fixing tube (21), and a connecting line (353) arranged on one end of the fixing sleeve (351); One end of the connecting line (353) is fixedly connected to the outer wall of the sealing plug (31).
10. The liver-kidney combined extraction and perfusion circuit according to claim 7, characterized in that: A sealing gasket (311) is provided between the sealing plug (31) and the ball head (22).