Clamping structure for peritoneal dialysis fluid drainage catheter and clamping method of clamping structure

Abstract

The invention relates to the technical field of medical instruments, in particular to a clamping structure for a peritoneal dialysis fluid drainage catheter, which comprises a mounting plate and a drainage tube, bandages are fixedly mounted on two sides of the mounting plate, a plurality of hooks are fixedly mounted at one end of one of the bandages, and the other end of one of the bandages is fixedly provided with a plurality of clamping grooves. A plurality of hanging rings which are arranged at equal intervals and are used for hanging hooks are fixedly mounted at one end of the other bandage; a mounting block is fixedly mounted on the surface of the mounting plate, a clamping groove is formed in the surface of the mounting block, a mounting groove is horizontally formed in the groove wall of the clamping groove, a threaded rod with the left end and the right end opposite in thread direction is horizontally and rotationally mounted in the mounting groove, and the threaded rod is symmetrically sleeved with sliding blocks in a threaded mode; and clamping plates are fixedly mounted on the surfaces of the sliding blocks, and the two ends of the threaded rods penetrate out of the mounting blocks. The in-vitro drainage tube is fixed through the installation block and the adjustable bandage, the end of the in-vitro drainage tube is prevented from shaking, the risks of traction falling and wound extrusion are reduced, and the device can adapt to patients with different waistlines and is high in practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a clamping structure for a peritoneal dialysis fluid drainage catheter and a clamping method therefor. Background Art

[0002] As an important means for treating diseases such as renal failure, peritoneal dialysis is widely used in clinical practice. During peritoneal dialysis, the drainage catheter is a key component for discharging dialysis fluid. Chinese Patent No. CN221637048U discloses a peritoneal dialysis internal catheter. During use, one end of the drainage catheter needs to be connected to the patient's abdominal cavity, and the other end is fixedly connected to the liquid delivery tube of the peritoneal dialysis fluid bag.

[0003] When the existing drainage catheter does not require the inflow and outflow of dialysis fluid, the end outside the patient's abdominal cavity is not connected to the liquid delivery tube of the peritoneal dialysis fluid bag. Due to the lack of a fixed clamping structure for the end of the drainage catheter outside the abdominal cavity, when it is in a free state, it often pulls the wound between the other end and the skin, resulting in trauma or infection at the wound. Summary of the Invention

[0004] The purpose of the present invention is to solve the following disadvantages in the prior art: when the existing drainage catheter does not require the inflow and outflow of dialysis fluid, the end outside the patient's abdominal cavity is not connected to the liquid delivery tube of the peritoneal dialysis fluid bag. Due to the lack of a fixed clamping structure for the end of the drainage catheter outside the abdominal cavity, when it is in a free state, it often pulls the wound between the other end and the skin, resulting in trauma or infection at the wound. Thus, a clamping structure for a peritoneal dialysis fluid drainage catheter is proposed.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A clamping structure for a peritoneal dialysis fluid drainage catheter includes a mounting plate and a drainage tube. Both sides of the mounting plate are fixedly installed with straps. One end of one of the straps is fixedly installed with a plurality of hooks, and one end of the other strap is fixedly installed with a plurality of hanging rings arranged at equal intervals for the hooks to hang on. The surface of the mounting plate is fixedly installed with a mounting block. The surface of the mounting block is provided with a clamping groove for the end of the drainage tube outside the abdominal cavity to be inserted. A mounting groove is horizontally opened on the groove wall of the clamping groove. A threaded rod with opposite thread directions at both ends is horizontally rotatably installed in the mounting groove. Symmetrically threaded sleeves are sleeved on the threaded rod. The surface of the slider is fixedly installed with an arc-shaped clamping plate through a connecting rod. Both ends of the threaded rod penetrate through the mounting block and are fixedly installed with adjusting wheels. The end of the drainage tube outside the abdominal cavity is arranged in the clamping groove and is clamped by two clamping plates.

[0006] As a preferred solution, auxiliary fixing components are symmetrically arranged on the surface of the mounting plate. The two groups of auxiliary fixing components are respectively located on both sides of the mounting block, and the auxiliary fixing components are used to assist in fixing the connection between the end of the drainage tube and the end of the liquid passing tube of the peritoneal dialysis solution bag.

[0007] As a preferred solution, the auxiliary fixing component includes a first fixing block and a second fixing block. The first fixing block is fixedly installed on the surface of the mounting plate. The second fixing block is locked with the first fixing block through a locking component. An arc-shaped fixing port is opened on each of the mutually approaching surfaces of the first fixing block and the second fixing block. The two fixing ports form a fixing cavity for fixing the connection between the drainage tube and the liquid passing tube of the peritoneal dialysis solution bag.

[0008] As a preferred solution, the locking component includes a plug board fixedly installed on the surface of the second fixing block, a rectangular board fixedly installed on the surface of the first fixing block, two symmetrically and vertically fixedly installed hollow columns on the upper surface of the rectangular board, two inserting rods respectively slidably inserted into the two hollow columns, and a locking block fixedly installed at the top ends of the two inserting rods. A slot for the plug board to insert is opened on the surface of the first fixing block. An energized spring is arranged in the hollow column, and the two ends of the energized spring are respectively fixedly connected with the rectangular board and the inserting rod. A rectangular groove for the rectangular board to insert is opened on the surface of the second fixing block. A locking port communicated with the rectangular groove is opened on the upper surface of the second fixing block. A pressing port with a right-angled triangle cross-section is opened at the top wall of the slot opening of the rectangular groove. The longitudinal section of the locking block is a right-angled trapezoid. A pushing component for controlling the downward movement of the locking block is arranged on the upper surface of the second fixing block.

[0009] As a preferred solution, the pushing component includes a first spring rod vertically and fixedly installed on the upper surface of the second fixing block and a U-shaped push rod. One end of the push rod is fixedly installed at the top end of the first spring rod, and the other end of the push rod corresponds to the position of the locking port.

[0010] As a preferred solution, a liquid collecting port for collecting the dialysis solution dripping from the connection between the drainage tube and the liquid passing tube of the peritoneal dialysis solution bag is vertically opened on the inner bottom wall of the fixing port. An L-shaped groove is opened on the surface of the first fixing block. A reusable water-sensitive color-changing paper is installed in the L-shaped groove. L-shaped openings are opened on both sides of the first fixing block. The L-shaped openings correspond to the side walls of the water-sensitive color-changing paper. Transparent strips are fixedly embedded in the L-shaped openings.

[0011] As a preferred solution, a rectangular opening is provided at the top of the water-sensitive color-changing paper. A liquid absorption rope is horizontally arranged in the rectangular opening. Both ends of the liquid absorption rope are fixedly connected to the water-sensitive color-changing paper. A humidity sensor is fixedly installed on the top wall of the L-shaped groove. The humidity sensor is in contact with the liquid absorption rope. The humidity sensor is used to sense the humidity change of the liquid absorption rope. The humidity sensor is electrically connected to two energized springs. Circular grooves are symmetrically provided on the surface of the second fixing block, and second spring rods are fixedly installed in the circular grooves.

[0012] As a preferred solution, an installation cavity is provided in the first fixing block. A hollow rod is horizontally and fixedly installed on the cavity wall of the installation cavity. A piston rod is slidably and sealingly inserted into the hollow rod. A through hole communicating with the outside is provided on the cavity wall of the installation cavity. The piston rod is slidably inserted into the through hole. A telescopic member for connecting the end of the piston rod and the cavity wall of the installation cavity is provided in the hollow rod. A first arc-shaped groove is provided on the surface of the first fixing block. An arc-shaped baffle is sealingly and slidably inserted into the first arc-shaped groove. A second arc-shaped groove corresponding to the position of the first arc-shaped groove is provided on the surface of the second fixing block. One end of the baffle located in the first arc-shaped groove is slidably inserted into the second arc-shaped groove. A liquid through hole is provided on the surface of the baffle. An air pipe is fixedly installed on the lower surface of the hollow rod. One end of the air pipe away from the hollow rod communicates with the inside of the first arc-shaped groove.

[0013] As a preferred solution, the telescopic member includes a telescopic spring. Both ends of the telescopic spring are respectively fixedly connected to the end of the piston rod and the cavity wall of the installation cavity.

[0014] A clamping method for a clamping structure of a peritoneal dialysis fluid drainage catheter. The clamping method includes the following steps: S1: First, the patient winds two straps around his own waist, and according to his own waist circumference, controls the hook to be hung on the hanging ring at a suitable position, and binds the mounting plate to his own waist; S2: When the drainage of the dialysis fluid is not required, insert the end of the drainage tube outside the abdominal cavity into the clamping groove, and by rotating the threaded rod, control the two clamping plates to approach each other until the two clamping plates clamp the end of the drainage tube located in the clamping groove; S3: When the drainage of the dialysis fluid is required, rotate the threaded rod, control the two clamping plates to move away from each other. After releasing the clamping of the end of the drainage tube, take out the end of the drainage tube from the clamping groove and connect it to the end of the liquid through tube of the peritoneal dialysis fluid bag; S4: Select an auxiliary fixing component adapted to the pipeline traction direction, and fix the connection between the end of the drainage tube and the end of the liquid through tube of the peritoneal dialysis fluid bag through the auxiliary fixing component, and then the drainage work of the peritoneal dialysis fluid can be carried out; S5: After the drainage is completed, release the fixation of the auxiliary fixing component on the connection between the end of the drainage tube and the liquid passing tube end of the peritoneal dialysis solution bag, and after releasing the connection between the end of the drainage tube and the liquid passing tube end of the peritoneal dialysis solution bag, repeat step S2 again, and fix the end of the drainage tube outside the abdominal cavity in the clamping groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The external drainage tube is fixed by the installation block and the adjustable strap, preventing the end from shaking, reducing the risks of pulling off and wound extrusion, and being adaptable to patients with different waist circumferences, with strong practicability; The auxiliary fixing structure can fix the connection between the drainage tube and the liquid passing tube of the peritoneal dialysis solution bag in the direction of pipeline traction during drainage, avoiding the displacement of the drainage tube due to the body movement of the patient; The reusable water-sensitive color-changing paper is used to detect whether there is liquid leakage at the connection between the drainage tube and the liquid passing tube. The color change of the water-sensitive color-changing paper after contacting the liquid is visually judged to avoid poor sealing at the connection; The liquid absorption rope cooperates with the humidity sensor to make the energized spring contract when liquid leakage is detected, release the locking of the auxiliary fixing structure and bounce open, which can achieve the effect of timely reminding the personnel of liquid leakage and avoiding the color change of the water-sensitive color-changing paper not being noticed in the first time; When the auxiliary fixing component does not fix the drainage tube, the baffle can block the contact between the outside water and the water-sensitive color-changing paper. Only when the auxiliary fixing component fixes the connection between the drainage tube and the liquid passing tube, will it move and expose the water-sensitive color-changing paper, and play a detection role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front three-dimensional structural schematic diagram of a clamping structure for a peritoneal dialysis solution drainage catheter proposed by the present invention; Figure 2 is a top three-dimensional structural schematic diagram of a clamping structure for a peritoneal dialysis solution drainage catheter proposed by the present invention; Figure 3 is Figure 2 the enlarged structural schematic diagram at A in Figure 4 is a partial three-dimensional structural schematic diagram of the installation block in the present invention; Figure 5 is Figure 4 the enlarged structural schematic diagram at B in Figure 6 is a partial three-dimensional structural schematic diagram of the auxiliary fixing component in the present invention; Figure 7 is a partial three-dimensional structural schematic diagram of the first fixing block in the present invention; Figure 8 is a partial three-dimensional structural schematic diagram of the second fixing block in the present invention; Figure 9 Schematic diagram of partial three-dimensional cross-sectional structure at the hollow column, insertion rod and locking block; Figure 10 Schematic diagram of partial three-dimensional cross-sectional structure at the first fixing block; Figure 11 Schematic diagram of partial three-dimensional structure of the water-sensitive color-changing paper and humidity sensor; Figure 12 Schematic three-dimensional structure of the baffle; Figure 13 is Figure 11 Enlarged structure diagram at point C in Figure 14 Schematic diagram of partial three-dimensional cross-sectional structure at the hollow rod and piston rod.

[0017] In the figure: 1 mounting plate, 2 drainage tube, 3 hook, 4 hanging ring, 5 mounting block, 6 clamping groove, 7 threaded rod, 8 slider, 9 clamping plate, 10 binding strap, 11 first fixing block, 12 second fixing block, 13 fixing port, 14 insertion plate, 15 rectangular plate, 16 hollow column, 17 insertion rod, 18 locking block, 19 slot, 20 energized spring, 21 rectangular groove, 22 locking port, 23 pressing port, 24 first spring rod, 25 push rod, 26 liquid collecting port, 27 water-sensitive color-changing paper, 28 transparent strip, 29 liquid absorbing rope, 30 humidity sensor, 31 second spring rod, 32 mounting cavity, 33 hollow rod, 34 piston rod, 35 first arc groove, 36 baffle, 37 second arc groove, 38 liquid passing port, 39 ventilation pipe, 40 telescopic spring. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Referring to Figures 1-14 , a clamping structure for a peritoneal dialysis fluid drainage catheter includes a mounting plate 1 and a drainage tube 2. Binding straps 10 are fixedly installed on both sides of the mounting plate 1. One end of one of the binding straps 10 is fixedly installed with a plurality of hooks 3, and the other end of the other binding strap 10 is fixedly installed with a plurality of hanging rings 4 arranged at equal intervals for hanging the hooks 3.

[0020] The surface of the mounting plate 1 is fixedly installed with a mounting block 5. A clamping groove 6 is formed on the surface of the mounting block 5. The clamping groove 6 is used for the end of the drainage tube 2 outside the abdominal cavity to be inserted. A mounting groove is horizontally formed on the groove wall of the clamping groove 6. A threaded rod 7 with opposite thread directions at both left and right ends is horizontally rotatably installed in the mounting groove. Symmetrically threaded sleeves on the threaded rod 7 are provided with sliders 8. The surface of the slider 8 is fixedly installed with an arc-shaped clamping plate 9 through a connecting rod. Both ends of the threaded rod 7 pass through the mounting block 5 and are fixedly installed with adjusting wheels. The end of the drainage tube 2 outside the abdominal cavity is arranged in the clamping groove 6 and is clamped by two clamping plates 9.

[0021] First, tie two straps 10 around the patient's waist. Then, according to the patient's own waist circumference, hang the hook 3 on the hanging ring 4 at an appropriate position, so as to tie the mounting plate 1 around the patient's waist. At this time, insert the end of the drainage tube 2 outside the abdominal cavity into the clamping groove 6 and place it between the two clamping plates 9. Then, by rotating the adjusting wheel to control the rotation of the threaded rod 7, the two sliders 8 symmetrically threaded on the threaded rod 7 respectively drive the two clamping plates 9 to move relatively, so that the two clamping plates 9 approach each other until the surfaces of the two clamping plates 9 approaching each other are in contact with the end surface of the drainage tube 2, and then the end of the drainage tube 2 can be clamped and fixed to prevent the end from shaking and reduce the risks of pulling off and wound extrusion. The surface of the clamping plate 9 can be bonded with a non-slip pad made of rubber material, so as to increase the friction between the clamping plate 9 and the contact surface of the end of the drainage tube 2.

[0022] Auxiliary fixing components are symmetrically arranged on the surface of the mounting plate 1. The two groups of auxiliary fixing components are respectively located on both sides of the mounting block 5. The auxiliary fixing components are used to assist in fixing the connection between the end of the drainage tube 2 and the liquid delivery tube end of the peritoneal dialysis solution bag (the peritoneal dialysis solution bag, the liquid delivery tube, and the connection between the liquid delivery tube and the drainage tube 2 are all prior arts, and their working principles will not be described in detail here). The auxiliary fixing component includes a first fixing block 11 and a second fixing block 12. The first fixing block 11 is fixedly installed on the surface of the mounting plate 1. The second fixing block 12 is locked with the first fixing block 11 through a locking component. Arc-shaped fixing openings 13 are formed on the surfaces of the first fixing block 11 and the second fixing block 12 approaching each other. The two fixing openings 13 form a fixing cavity for fixing the connection between the drainage tube 2 and the liquid delivery tube of the peritoneal dialysis solution bag.

[0023] The locking component includes a plug plate 14 fixedly installed on the surface of the second fixed block 12, a rectangular plate 15 fixedly installed on the surface of the first fixed block 11, two symmetrically and vertically fixedly installed hollow columns 16 on the upper surface of the rectangular plate 15, two insertion rods 17 respectively slidably inserted into the two hollow columns 16, and a locking block 18 fixedly installed at the top ends of the two insertion rods 17. A slot 19 for the plug plate 14 to be inserted is formed on the surface of the first fixed block 11. An energized spring 20 is arranged in the hollow column 16, and both ends of the energized spring 20 are fixedly connected to the rectangular plate 15 and the insertion rod 17 respectively. A rectangular groove 21 for the rectangular plate 15 to be inserted is formed on the surface of the second fixed block 12. A locking port 22 communicating with the rectangular groove 21 is formed on the upper surface of the second fixed block 12. A pressing port 23 with a right-angled triangle cross-section is formed on the top wall at the notch of the rectangular groove 21. The longitudinal section of the locking block 18 is a right-angled trapezoid. A pushing component for controlling the downward movement of the locking block 18 is arranged on the upper surface of the second fixed block 12. The pushing component includes a first spring rod 24 vertically and fixedly installed on the upper surface of the second fixed block 12 and a U-shaped push rod 25. One end of the push rod 25 is fixedly installed at the top end of the first spring rod 24, and the other end of the push rod 25 corresponds to the position of the locking port 22.

[0024] When it is necessary to drain the peritoneal dialysis fluid, by rotating the threaded rod 7, the two clamping plates 9 are controlled to move away from each other. After the clamping of the end of the drainage tube 2 by the two clamping plates 9 is released, the end of the drainage tube 2 is taken out from the clamping groove 6, and after it is connected to the liquid passing tube of the peritoneal dialysis fluid bag, a secondary fixing assembly adapted to the pipeline traction direction is selected. Then, by pressing the first spring rod 24 on the upper surface of the second fixing block 12, it contracts, causing the push rod 25 to move downward. The bottom end of the push rod 25 will abut against the upper surface of the locking block 18 located in the locking port 22 and push the locking block 18 downward until the locking block 18 moves downward and is no longer located in the locking port 22, then the locking between the first fixing block 11 and the second fixing block 12 can be released. After separating them, the connection between the drainage tube 2 and the liquid passing tube is placed in the fixing port 13 opened on the surface of the first fixing block 11. Then, the second fixing block 12 is controlled to move, so that the plug board 14 on the surface of the second fixing block 12 is aligned with the slot 19 opened on the surface of the first fixing block 11, and the inclined surface of the locking block 18 is aligned with the inclined wall of the pressing port 23. The second fixing block 12 is controlled to move towards the first fixing block 11. At this time, the plug board 14 will insert into the slot 19, and the inclined surface of the locking block 18 will also slide in contact with the inclined wall of the pressing port 23. Under the action of pressing, multiple energized springs 20 will contract, and the locking block 18 will also move downward until the first fixing block 11 abuts against the second fixing block 12, the locking block 18 will move to a position corresponding to the locking port 22, and the pressing force exerted on the locking block 18 by the wall of the rectangular groove 21 disappears. The locking block 18 will quickly move upward and reset under the elastic potential energy of the energized spring 20 and enter the locking port 22, thus completing the locking of the first fixing block 11 and the second fixing block 12. And at this time, the connection between the drainage tube 2 and the liquid passing tube will be pressed and fixed in the fixing cavity composed of two fixing ports 13, avoiding the displacement of the drainage tube 2 due to the patient's body movement during the drainage process, and the connection between the drainage tube 2 and the liquid passing tube cannot be maintained in a suitable drainage position, resulting in unsmooth drainage.

[0025] A liquid collecting port 26 for collecting the dialysis fluid dripping from the connection between the drainage tube 2 and the liquid passing tube of the peritoneal dialysis fluid bag is vertically opened on the inner bottom wall of the fixing port 13. An L-shaped groove is opened on the surface of the first fixing block 11, and a reusable water-sensitive color-changing paper 27 (the water-sensitive color-changing paper 27 is a prior art, and its working principle will not be described in detail here) is installed in the L-shaped groove. L-shaped openings are opened on both sides of the first fixing block 11, and the L-shaped openings correspond to the side walls of the water-sensitive color-changing paper 27. Transparent strips 28 are fixedly embedded in the L-shaped openings.

[0026] The water-sensitive color-changing paper 27 has two colors before and after contacting the dialysis fluid. When the connection between the drainage tube 2 and the fluid-conducting tube is pressed and fixed by the auxiliary fixing assembly, the liquid-collecting ports 26 formed on the surfaces of the first fixing block 11 and the second fixing block 12 in the locked state will abut against each other, thus forming a collecting space for collecting the dialysis fluid leaked from the connection between the drainage tube 2 and the fluid-conducting tube. At this time, the water-sensitive color-changing paper 27 is also located in the collecting space. If the connection between the drainage tube 2 and the fluid-conducting tube leaks, the leaked dialysis fluid will fall into the collecting space and drip on the surface of the water-sensitive color-changing paper 27. After the water-sensitive color-changing paper 27 contacts the dialysis fluid, its color will change rapidly. The color change of the water-sensitive color-changing paper 27 can be observed through the transparent strip 28 to determine whether the connection between the drainage tube 2 and the fluid-conducting tube leaks, avoiding the poor sealing of the connection, resulting in the leakage of dialysis fluid, and at the same time, bacteria, viruses and other microorganisms in the outside world may enter the abdominal cavity through the gap, causing serious infections such as peritonitis.

[0027] A rectangular opening is formed at the top end of the water-sensitive color-changing paper 27. A liquid-absorbing rope 29 is horizontally arranged in the rectangular opening. Both ends of the liquid-absorbing rope 29 are fixedly connected to the water-sensitive color-changing paper 27. A humidity sensor 30 is fixedly installed on the top wall of the L-shaped groove. The humidity sensor 30 is in contact with the liquid-absorbing rope 29. The humidity sensor 30 is used to sense the humidity change of the liquid-absorbing rope 29. The humidity sensor 30 is electrically connected to two energized springs 20. Circular grooves are symmetrically formed on the surface of the second fixing block 12, and second spring rods 31 are fixedly installed in the circular grooves.

[0028] When the first fixing block 11 and the second fixing block 12 do not abut against each other, both of the two second spring rods 31 will be in a natural state. When the first fixing block 11 and the second fixing block 12 abut against each other and press and fix the connection between the drainage tube 2 and the fluid-conducting tube, both of the two second spring rods 31 will be in a contracted state under the pressure of the first fixing block 11.

[0029] When the connection between the drainage tube 2 and the fluid-conducting tube has good sealing and does not leak, the water-sensitive color-changing paper 27 is in a dry state. Furthermore, the liquid-absorbing rope 29 will not contact the liquid either, and thus will also be in a dry state. At this time, the humidity sensor 30 does not sense the humidity change of the liquid-absorbing rope 29, so it will not energize the two energized springs 20. At this time, the two energized springs 20 will be in a natural state.

[0030] If the connection between the drainage tube 2 and the liquid infusion tube has poor sealing performance and leakage occurs, when the leaked dialysate drips on the water-sensitive color-changing paper 27, while the water-sensitive color-changing paper 27 changes color, the liquid-absorbing rope 29 connected to the water-sensitive color-changing paper 27 will gradually absorb the dialysate dripping on the water-sensitive color-changing paper 27, so that the liquid-absorbing rope 29 will become wet. When the humidity sensor 30 senses the humidity change of the liquid-absorbing rope 29, the humidity sensor 30 will energize the two energized springs 20. After the two energized springs 20 are energized, they will contract. Furthermore, the locking block 18 located in the locking port 22 will quickly move downward and no longer be located in the locking port 22, automatically releasing the lock between the first fixing block 11 and the second fixing block 12. Then, under the elastic potential energy of the two second spring rods 31 of the second fixing block 12, it will quickly move away from the first fixing block 11, that is, the second fixing block 12 will quickly bounce open, which can achieve the effect of timely reminding personnel of liquid leakage and avoiding the color change of the water-sensitive color-changing paper 27 not being noticed in the first time.

[0031] An installation cavity 32 is formed in the first fixing block 11. A hollow rod 33 is horizontally and fixedly installed on the cavity wall of the installation cavity 32. A piston rod 34 is slidably and sealingly inserted into the hollow rod 33. A through hole communicating with the outside is formed in the cavity wall of the installation cavity 32, and the piston rod 34 is slidably inserted into the through hole. A telescopic member for connecting the end of the piston rod 34 and the cavity wall of the installation cavity 32 is provided in the hollow rod 33. The telescopic member includes a telescopic spring 40. The two ends of the telescopic spring 40 are respectively fixedly connected to the end of the piston rod 34 and the cavity wall of the installation cavity 32. A first arc-shaped groove 35 is formed on the surface of the first fixing block 11. An arc-shaped baffle 36 is slidably and sealingly inserted into the first arc-shaped groove 35. A second arc-shaped groove 37 corresponding to the position of the first arc-shaped groove 35 is formed on the surface of the second fixing block 12. One end of the baffle 36 located in the first arc-shaped groove 35 is slidably inserted into the second arc-shaped groove 37. A liquid through hole 38 is formed on the surface of the baffle 36. An air vent pipe 39 is fixedly installed on the lower surface of the hollow rod 33. One end of the air vent pipe 39 away from the hollow rod 33 is communicated with the inside of the first arc-shaped groove 35.

[0032] When the auxiliary fixing assembly does not press and fix the connection between the drainage tube 2 and the liquid infusion tube, that is, when the drainage tube 2 and the liquid infusion tube are not located in the fixing port 13, at this time, the piston rod 34 located in the fixing port 13 will not be subjected to the pressing force, so that the telescopic spring 40 will be in a natural state. The volume of the space between the end of the piston rod 34 located in the hollow rod 33 and the cavity wall of the installation cavity 32 will be in the maximum state. The liquid through hole 38 formed on the surface of the baffle 36 will be located in the first arc-shaped groove 35. At this time, the baffle 36 will block the top openings of the two liquid collecting ports 26, preventing the outside water from contacting the water-sensitive color-changing paper 27.

[0033] When the auxiliary fixing component presses and fixes the connection between the drainage tube 2 and the liquid conveying tube, the piston rod 34 is subjected to the pressing force at the connection between the drainage tube 2 and the liquid conveying tube, and also moves into the hollow rod 33. The space volume between the end of the piston rod 34 and the contact surface of the cavity wall of the installation cavity 32 will decrease. The gas located in the hollow rod 33 will enter the first arc-shaped groove 35 from the ventilation tube 39, and push the baffle 36 that is hermetically slidably installed in the first arc-shaped groove 35 to move, so that the baffle 36 moves to the position where the liquid passing port 38 opened on its own surface is located at the top openings of the two liquid collecting ports 26. In this way, when there is a leakage at the connection between the drainage tube 2 and the liquid conveying tube, the leaked dialysate can smoothly enter the liquid collecting port 26 from the liquid passing port 38 and drip on the surface of the water-sensitive color-changing paper 27.

[0034] That is, when the auxiliary fixing component does not fix the drainage tube 2, the baffle 36 can block the contact between the outside water and the water-sensitive color-changing paper 27. Only when the auxiliary fixing component fixes the connection between the drainage tube 2 and the liquid conveying tube, will it move, expose the water-sensitive color-changing paper 27, and play a detection role.

[0035] A clamping method for a clamping structure of a peritoneal dialysis fluid drainage catheter, the clamping method includes the following steps: S1: First, the patient wraps the two straps 10 around his own waist, and according to his own waist circumference, controls the hook 3 to be hung on the hanging ring 4 at a suitable position, and binds the mounting plate 1 to his own waist; S2: When the dialysis fluid does not need to be drained, insert the end of the drainage tube 2 outside the abdominal cavity into the clamping groove 6, and by rotating the threaded rod 7, control the two clamping plates 9 to approach each other until the two clamping plates 9 clamp the end of the drainage tube 2 located in the clamping groove 6; S3: When the dialysis fluid needs to be drained, rotate the threaded rod 7, control the two clamping plates 9 to move away from each other, and after releasing the clamping of the end of the drainage tube 2, take out the end of the drainage tube 2 from the clamping groove 6 and connect it to the end of the liquid conveying tube of the peritoneal dialysis fluid bag; S4: Select an auxiliary fixing component that is adapted to the pipeline traction direction, and use this auxiliary fixing component to fix the connection between the end of the drainage tube 2 and the end of the liquid conveying tube of the peritoneal dialysis fluid bag, and then the peritoneal dialysis fluid drainage work can be carried out; S5: After the drainage is completed, release the fixation of the auxiliary fixing component on the connection between the end of the drainage tube 2 and the end of the liquid conveying tube of the peritoneal dialysis fluid bag, and release the connection between the end of the drainage tube 2 and the end of the liquid conveying tube of the peritoneal dialysis fluid bag, and then repeat step S2 again to fix the end of the drainage tube 2 outside the abdominal cavity in the clamping groove 6.

[0036] In the present invention, first, two straps 10 are tied around the patient's waist. According to the patient's waist circumference, the hook 3 is hung on the appropriate hanging ring 4, and the mounting plate 1 is fixed to the patient's waist. Then, the end of the drainage tube 2 outside the abdominal cavity is inserted into the clamping groove 6 and placed between the two clamping plates 9. The adjusting wheel is rotated to rotate the threaded rod 7, driving the two sliders 8 and the two clamping plates 9 to move relatively until the two clamping plates 9 abut against the surface of the end of the drainage tube 2, thereby realizing the clamping and fixing of the end of the drainage tube 2, preventing it from shaking, and reducing the risks of pulling and falling off and wound extrusion.

[0037] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A clamping structure for a peritoneal dialysis fluid drainage catheter, comprising a mounting plate (1) and a drainage tube (2), characterized in that: Both sides of the mounting plate (1) are fixedly mounted with straps (10), one end of one of the straps (10) being fixedly mounted with a plurality of hooks (3), and one end of another of the straps (10) being fixedly mounted with a plurality of hanging rings (4) arranged at equal distances and used for hanging the hooks (3); A mounting block (5) is fixedly mounted on the surface of the mounting plate (1), and a clamping groove (6) is provided on the surface of the mounting block (5). The clamping groove (6) is used for inserting the end of the drainage tube (2) located outside the abdominal cavity. A mounting groove is horizontally provided on the groove wall of the clamping groove (6), and a threaded rod (7) with opposite thread directions at left and right ends is horizontally rotatably mounted in the mounting groove. A slider (8) is symmetrically threadedly sleeved on the threaded rod (7), and an arc-shaped clamping plate (9) is fixedly mounted on the surface of the slider (8) via a connecting rod. Both ends of the threaded rod (7) pass through the mounting block (5) and are fixedly mounted with an adjusting wheel. The end of the drainage tube (2) located outside the abdominal cavity is arranged in the clamping groove (6) and is clamped by two clamping plates (9).

2. A clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 1, characterized in that: Auxiliary fixing components are symmetrically arranged on the surface of the mounting plate (1), and two groups of the auxiliary fixing components are respectively located on both sides of the mounting block (5), and the auxiliary fixing components are used to assist in fixing the connection between the end of the drainage tube (2) and the end of the fluid passage tube of the peritoneal dialysis fluid bag.

3. A clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 2, characterized in that: The auxiliary fixing assembly comprises a first fixing block (11) and a second fixing block (12); the first fixing block (11) is fixedly mounted on the surface of the mounting plate (1); the second fixing block (12) is locked with the first fixing block (11) via a locking assembly; arc-shaped fixing openings (13) are provided on the surfaces of the first fixing block (11) and the second fixing block (12) that are close to each other; the two fixing openings (13) are combined to form a fixing cavity for fixing the connection between the drainage tube (2) and the peritoneal dialysis fluid bag passage tube.

4. The clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 3, characterized in that: The locking assembly comprises an insert plate (14) fixedly mounted on the surface of the second fixing block (12), a rectangular plate (15) fixedly mounted on the surface of the first fixing block (11), two hollow columns (16) symmetrically and vertically fixedly mounted on the upper surface of the rectangular plate (15), two insertion rods (17) respectively slidably inserted into the two hollow columns (16), and a locking block (18) fixedly mounted on the top of the two insertion rods (17), the surface of the first fixing block (11) is provided with a slot (19) for inserting the insert plate (14), the hollow column (16) is provided with an energized spring (20), the energized spring (20) is provided in the hollow column (16), and the energized spring (20) is provided in the hollow column (16). The two ends of the electric spring (20) are respectively fixedly connected to the rectangular plate (15) and the insertion rod (17); a rectangular groove (21) for inserting the rectangular plate (15) is provided on the surface of the second fixing block (12); a locking opening (22) communicating with the rectangular groove (21) is provided on the upper surface of the second fixing block (12); a pressing opening (23) having a longitudinal section in the shape of a right triangle is provided on the top wall at the notch of the rectangular groove (21); the longitudinal section of the locking block (18) is a right-angled trapezoid; and a pushing component for controlling the downward movement of the locking block (18) is provided on the upper surface of the second fixing block (12).

5. The clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 4, characterized in that: The pushing component comprises a first spring rod (24) and a U-shaped push rod (25) vertically fixedly mounted on the upper surface of the second fixed block (12); one end of the push rod (25) is fixedly mounted on the top end of the first spring rod (24); and the other end of the push rod (25) corresponds to the position of the locking opening (22).

6. The clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 4, characterized in that: The inner bottom wall of the fixing opening (13) is vertically provided with a liquid collecting opening (26) for collecting dialysate dripping from the connection between the drainage tube (2) and the peritoneal dialysis fluid bag liquid passage tube; the surface of the first fixing block (11) is provided with an L-shaped groove, in which a reusable water-sensitive color-changing paper (27) is installed; both sides of the first fixing block (11) are provided with L-shaped openings, the L-shaped openings correspond to the side wall positions of the water-sensitive color-changing paper (27), and a transparent strip (28) is fixedly embedded in the L-shaped openings.

7. A clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 6, characterized in that: The top of the water-sensitive color-changing paper (27) is provided with a rectangular opening, and a liquid absorbing rope (29) is horizontally provided in the rectangular opening. Both ends of the liquid absorbing rope (29) are fixedly connected to the water-sensitive color-changing paper (27). A humidity sensor (30) is fixedly installed on the top wall of the L-shaped groove. The humidity sensor (30) is in contact with the liquid absorbing rope (29). The humidity sensor (30) is used to sense the humidity change of the liquid absorbing rope (29). The humidity sensor (30) is electrically connected to two energized springs (20). The surface of the second fixed block (12) is symmetrically provided with circular grooves, and a second spring rod (31) is fixedly installed in the circular groove.

8. The clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 6, characterized in that: The first fixed block (11) has an installation cavity (32) formed therein, a hollow rod (33) is fixedly installed horizontally on the cavity wall of the installation cavity (32), a piston rod (34) is inserted in a sliding and sealing manner in the hollow rod (33), the cavity wall of the installation cavity (32) has a through hole connected to the outside, the piston rod (34) is inserted in a sliding manner in the through hole, and a telescopic component for connecting the end of the piston rod (34) and the cavity wall of the installation cavity (32) is provided in the hollow rod (33), a first arc groove (35) is formed on the surface of the first fixed block (11), and the first An arc-shaped baffle (36) is sealingly and slidably inserted in the arc-shaped groove (35); a second arc-shaped groove (37) corresponding to the position of the first arc-shaped groove (35) is provided on the surface of the second fixed block (12); one end of the baffle (36) is located at the first arc-shaped groove (35) and is slidably inserted in the second arc-shaped groove (37); a liquid passage port (38) is provided on the surface of the baffle (36); a vent pipe (39) is fixedly mounted on the lower surface of the hollow rod (33); an end of the vent pipe (39) away from the hollow rod (33) is connected to the first arc-shaped groove (35).

9. The clamping structure for a peritoneal dialysis fluid drainage catheter according to claim 8, characterized in that: The telescopic component comprises a telescopic spring (40), and two ends of the telescopic spring (40) are respectively fixedly connected to the end of the piston rod (34) and the cavity wall of the installation cavity (32).

10. A method for clamping the clamping structure for a peritoneal dialysis fluid drainage catheter according to any one of claims 1 to 9, characterized in that: The clamping method comprises the following steps: S1: First, the patient wraps two straps (10) around his waist, and controls the hook (3) to hang on the hanging ring (4) at a suitable position according to his waist circumference, and ties the mounting plate (1) to his waist; S2: When the dialysate does not need to be drained, the end of the drainage tube (2) located outside the abdominal cavity is inserted into the clamping groove (6), and the two clamping plates (9) are controlled to move closer to each other by rotating the threaded rod (7) until the two clamping plates (9) clamp the end of the drainage tube (2) located in the clamping groove (6); S3: When the dialysate needs to be drained, the threaded rod (7) is rotated to control the two clamping plates (9) to move away from each other, and after the clamping of the end of the drainage tube (2) is released, the end of the drainage tube (2) is taken out from the clamping groove (6) and connected to the end of the liquid passage tube of the peritoneal dialysis fluid bag; S4: selecting an auxiliary fixing component that is compatible with the pulling direction of the pipeline, and fixing the connection between the end of the drainage tube (2) and the end of the peritoneal dialysis fluid bag passage tube by using the auxiliary fixing component to perform the drainage of the peritoneal dialysis fluid; S5: After the drainage is completed, the fixing of the auxiliary fixing component to the connection between the end of the drainage tube (2) and the end of the peritoneal dialysis fluid bag passage tube is released, and the connection between the end of the drainage tube (2) and the end of the peritoneal dialysis fluid bag passage tube is released, and step S2 is repeated again to fix the end of the drainage tube (2) located outside the abdominal cavity in the clamping groove (6).

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