Urethral catheter automatic replacement equipment for nephrology department

Abstract

The invention discloses an automatic catheter replacement device for the nephrology department, and relates to the field of medical treatment, the automatic catheter replacement device for the nephrology department comprises a first barrel and a second barrel, the first barrel is located in the second barrel, and the automatic catheter replacement device for the nephrology department is characterized in that a replacement structure used for automatically replacing a catheter is arranged in the first barrel; a distraction structure for distraction of an incision for catheter replacement and a disinfection structure for disinfection of the periphery of the incision are arranged below the first barrel, and the distraction structure is located below the disinfection structure. By arranging the opening structure capable of opening the incision for replacing the catheter, the incision cannot be completely opened, the catheter is inconvenient to enter, and when a patient inserts or takes the catheter, the catheter may touch the edge of the incision, so that the patient feels uncomfortable.

Description

Technical Field

[0001] The invention relates to the medical field, and in particular to an automatic replacement device for a nephrology catheter. Background Art

[0002] With the rapid development of modern medical technology, cystostomy is the main medical treatment for some patients with dysuria and uncontrolled urination. This operation is to insert a catheter into the bladder through an incision in the abdomen, and leave a fistula 3-5 cm above the pubic symphysis to the inside of the bladder after the wound heals naturally. However, due to personal life reasons, patients often encounter the situation that they cannot stay in the hospital for a long time to be replaced by professional medical staff, and when patients or their relatives replace it, local infection is often caused due to improper disinfection and cleaning. Therefore, it is extremely important to design an automatic replacement device for nephrology catheters.

[0003] The disclosure (announcement) number is (CN 115300757 B) and is an automatic replacement device for urinary catheters in nephrology, comprising a first box body, a concave long groove for entering the urinary catheter is provided on the first box body, a sleeve is provided on the inner wall of the long groove to form a sealed cavity with the long groove, a plurality of first nozzles are provided on both sides of the long groove to connect the long groove and the sleeve at even intervals, a flexible ring that fits the human body surface is fixedly provided on one end face of the first box body, a turntable is provided on the end face of the first box body to rotate in the flexible ring, a liquid spraying groove is provided in the turntable, a liquid spraying slider is provided in the liquid spraying groove to slide, the liquid spraying slider is connected to the liquid spraying groove by a spring, a plurality of liquid spraying channels with oblique openings are provided in the liquid spraying slider, a second box body for extracting the urinary catheter in the human body that deviates from the center line of the first box body is fixedly provided on one end face of the first box body away from the flexible ring, and an opening connected to the long groove is provided on the flexible ring, the turntable and the second box body. The urinary catheter can be replaced.

[0004] However, the application does not provide an expansion structure that can expand the incision for replacing the catheter, so that the incision cannot be fully expanded, making it inconvenient to insert the catheter. When the patient is inserting or removing the catheter, the catheter may touch the edge of the incision, causing discomfort to the patient. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention aims to provide an automatic catheter replacement device for the nephrology department, which is provided with an expansion structure capable of expanding the incision for replacing the catheter, so that the incision can be safely expanded to facilitate the entry of the catheter. In addition, expanding the incision can also prevent the catheter from touching the edge of the incision when the patient is inserting or removing the catheter, making the patient more comfortable.

[0006] The main idea of ​​the technical solution adopted by the present invention is: by setting an expansion structure under the No. 1 cylinder, the multiple slots contained in the expansion structure can be expanded into a relatively flat plane, thereby increasing the contact area between the slots and the incision, so that the expanded part of the incision is larger, and the incision is supported by multiple expanded slots, so that the incision is finally expanded into a state close to a circle. It is convenient for the catheter to enter, and the expansion of the incision can also prevent the catheter from touching the edge of the incision when the patient is inserting or removing the catheter, making the patient more comfortable; A disinfection structure is also provided below the No. 1 cylinder to disinfect the incision and prevent infection of the incision caused by improper operation; When replacing the catheter, the used catheter may contaminate the interior of the No. 1 cylinder when passing through the interior of the No. 1 cylinder. Therefore, in order to avoid this problem, the present application also provides a protective structure inside the No. 2 cylinder. The protective structure can prevent the interior of the No. 1 cylinder from being contaminated by the catheter, making it convenient to use.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows: An automatic catheter replacement device for a nephrology department comprises a first cylinder and a second cylinder, wherein the first cylinder is located inside the second cylinder, and is characterized in that a replacement structure for automatically replacing the catheter is provided inside the first cylinder; An expansion structure for expanding the incision and a disinfection structure for disinfecting the area around the incision are provided below the first cylinder body, and the expansion structure is located below the disinfection structure.

[0008] Furthermore, the expansion structure includes a hydraulic ring arranged at the lower part of the interior of the No. 1 cylinder, and a plurality of movable expansion components are arranged around the lower part of the hydraulic ring.

[0009] Furthermore, each of the movable spreading components comprises a spreading rod and a hydraulic rod connected to the hydraulic ring, and the movable end of the hydraulic rod is sleeved in the spreading rod.

[0010] Furthermore, a slot is provided on one side of the propping rod, and sliding grooves are symmetrically provided on both sides of the slot. Two sliding blocks are symmetrically provided on one end of the hydraulic rod, and each sliding block is clamped in the corresponding sliding groove.

[0011] Furthermore, an expansion component for expanding the slot is also provided in the slot, and the expansion component is connected to the hydraulic rod.

[0012] Furthermore, the deployment assembly includes a plurality of deployment hoses arranged inside the slot, a liquid storage tube connected to each deployment hose, and an extrusion rod connected to the liquid storage tube, one end of the extrusion rod is connected to the hydraulic rod.

[0013] Furthermore, one end of the extrusion rod connected to the liquid storage tube is provided with a No. 1 piston matching the inner cavity area of ​​the liquid storage tube.

[0014] Furthermore, the disinfection structure includes a disinfectant spraying chamber arranged below the first cylinder body, and a disinfectant storage chamber located inside the second cylinder body, and the disinfectant storage chamber is connected to the disinfectant spraying chamber.

[0015] Furthermore, the replacement structure includes a driving assembly located inside the first cylinder body and a protective assembly located inside the second cylinder body, and the driving assembly is located above the protective assembly.

[0016] Furthermore, the driving assembly includes two rollers symmetrically arranged inside the No. 1 cylinder body, and two No. 1 driving motors located inside the No. 2 cylinder body, the two No. 1 driving motors are respectively connected to the two rollers, and the protective assembly includes two rotating shafts movably arranged inside the No. 2 cylinder body, and a protective film sleeved on each rotating shaft.

[0017] The beneficial effects of the present invention are as follows: Compared with the prior art, the improvements of the present invention are: Through the cooperation of the pressure assembly, hydraulic ring, expansion rod, extrusion rod, liquid storage tank, No. 1 piston, expansion hose and other structures, the incision on the patient for replacing the urinary catheter is expanded to facilitate the entry of the urinary catheter. When the patient is inserting or removing the urinary catheter, the urinary catheter will not touch the edge of the incision, causing discomfort to the patient. Through the cooperation of the disinfectant storage chamber, the disinfectant spray chamber, the connecting pipe, the spray hole, and the plug, the disinfectant enters the disinfectant storage chamber, enters the disinfectant spray chamber along the connecting pipe, and then is sprayed onto the stretched incision through the spray hole of the disinfectant spray chamber to disinfect the incision, thereby preventing incision infection caused by improper operation. Through the mutual cooperation of the rotating shaft, the protective film, the No. 1 fixed shaft, the No. 2 fixed shaft and the No. 2 driving motor, the interior of the No. 1 cylinder can be protected. Before or after the catheter needs to be replaced, the driving motors of the two rotating shafts are started to rotate in opposite directions, so that the protective film wrapped on the rotating shaft is wound around the interior of the No. 1 cylinder for one circle, thereby protecting the interior of the No. 1 cylinder and preventing the catheter from contaminating the interior of the No. 1 cylinder during the replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the overall structure of the automatic replacement device for nephrology catheters of the present invention.

[0019] Figure 2 It is a top view of the automatic replacement device for nephrology catheter of the present invention.

[0020] Figure 3 It is a bottom view of the automatic replacement device for nephrology catheter of the present invention.

[0021] Figure 4 This is a schematic diagram of the overall structure of the automatic urinary catheter replacement device for nephrology of the present invention from another perspective.

[0022] Figure 5 It is an enlarged view of part A of the automatic replacement device for nephrology catheters of the present invention.

[0023] Figure 6 It is a vertical cross-sectional view of the automatic replacement device for nephrology catheter of the present invention.

[0024] Figure 7 It is a vertical cross-sectional view of the automatic replacement device for nephrology catheters from other viewing angles of the present invention.

[0025] Figure 8 It is a vertical cross-sectional view from another perspective of the automatic replacement device for nephrology catheters of the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the unfolded components of the automatic replacement device for nephrology catheters of the present invention.

[0027] Fig.10 This is a schematic diagram of the expanded component structure of the automatic nephrology catheter replacement device of the present invention from another perspective.

[0028] Fig.11 It is an enlarged view of part B of the automatic replacement device for nephrology catheter of the present invention.

[0029] Fig.12 It is a cross-sectional view of the unfolded components of the automatic replacement device for nephrology catheters of the present invention.

[0030] Wherein: 1. Cylinder No. 1, 2. Cylinder No. 2, 3. Disinfectant spraying chamber, 4. Roller, 5. Spreading rod, 6. Spray hole, 7. Hydraulic ring, 8. Connecting rod No. 1, 9. Connecting rod No. 2, 10. Extrusion rod, 11. Protective film placement groove, 12. Opening hole, 13. Liquid storage tube, 14. Expanding hose, 15. Slide groove, 16. Sliding block, 17. Piston No. 1, 18. Connecting shaft, 19. Drive motor No. 1, 20. Fixed ring, 21. Fixed shaft No. 1, 22. Fixed shaft No. 2, 23. Disinfectant storage chamber, 24. Connecting tube, 25. Push rod, 26. Piston No. 2, 27. Pressure cylinder, 28. Drive motor No. 2, 29. Rotating shaft. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] With the rapid development of modern medical technology, cystostomy is the main medical treatment for some patients with dysuria and uncontrolled urination. This operation is to insert a catheter into the bladder through an incision in the abdomen, and leave a fistula 3-5 cm above the pubic symphysis to the inside of the bladder after the wound heals naturally. However, due to personal life reasons, patients often encounter the situation that they cannot stay in the hospital for a long time to be replaced by professional medical staff, and when patients or their relatives replace it, local infection is often caused due to improper disinfection and cleaning. Therefore, it is extremely important to design an automatic replacement device for nephrology catheters.

[0033] The existing automatic catheter replacement equipment is not provided with an expansion structure that can expand the incision for replacing the catheter, so that the incision cannot be fully expanded, which is inconvenient for the insertion of the catheter. When the patient is inserting or removing the catheter, the catheter may touch the edge of the incision, causing discomfort to the patient.

[0034] In order to solve the above problems, the present application discloses an automatic replacement device for nephrology catheters. Figure 1-Figure 12 The automatic replacement device for urinary catheters in the Department of Nephrology comprises a first cylinder body 1 and a second cylinder body 2, wherein the first cylinder body 1 is located inside the second cylinder body 2, and a replacement structure for automatically replacing urinary catheters is provided inside the first cylinder body 1; An expansion structure for expanding the incision for replacing the urinary catheter and a disinfection structure for disinfecting the area around the incision are provided below the No. 1 cylinder body 1, and the expansion structure is located below the disinfection structure.

[0035] The expansion structure includes a hydraulic ring 7 disposed at the lower part of the first cylinder 1, and a plurality of movable expansion components are disposed around the lower part of the hydraulic ring 7. Each movable expansion component includes an expansion rod 5 connected to the hydraulic ring 7 and a hydraulic rod, and one end of the hydraulic rod is sleeved in the expansion rod.

[0036] A slot is formed on one side of the propping rod 5 , and sliding grooves 15 are symmetrically formed on both sides of the slot. Two sliding blocks 16 are symmetrically formed at one end of the hydraulic rod, and each sliding block 16 is clamped in a corresponding sliding groove 15 .

[0037] The slot is also provided with an expansion component for expanding the slot, and the expansion component is connected to the hydraulic rod.

[0038] It should be noted that the slot is an elastic rubber hose. In the unexpanded state, the slot is a semicircular tube with a gathered tube wall. At this time, the contact area with the incision is small and the incision cannot be stretched open. Under the action of the expansion component, the slot will expand into a relatively flat plane, thereby increasing the contact area between the slot and the incision, making the part of the incision that is stretched open larger. The incision is supported by multiple expanded slots, so that the incision is finally stretched into a state close to a circle. It is convenient for the catheter to enter, and stretching the incision can also prevent the catheter from touching the edge of the incision when the patient is inserting or removing the catheter, making the patient more comfortable.

[0039] Specifically, the deployment assembly includes a plurality of deployment hoses 14 disposed inside the slot, a liquid storage tube 13 connected to each deployment hose 14, and an extrusion rod 10 connected to the liquid storage tube 13, one end of the extrusion rod 10 being connected to the hydraulic rod. The end of the extrusion rod 10 connected to the liquid storage tube 13 is provided with a No. 1 piston 17 matching the inner cavity area of ​​the liquid storage tube 13. A certain amount of liquid is stored inside the liquid storage tube 13, and the liquid is water. The water content in the liquid storage tube 13 is flush with the deployment hose 14 closest to the bottom surface of the No. 1 piston 17, and there is a distance from the bottom surface of the No. 1 piston 17, which is sufficient to allow the No. 1 piston 17 to move inside the liquid storage tube 13.

[0040] It should be noted that each expansion hose 14 is horizontally bonded to the inside of the slot, and both ends of each expansion hose 14 are in a closed state, and the middle part of each expansion hose 14 is connected to the liquid storage tube 13. One end of the extrusion rod 10 connected to the liquid storage tube 13 is sleeved with a No. 1 piston 17, and the diameter of the No. 1 piston 17 matches the endoscope of the liquid storage tube 13. The other end of the extrusion rod 10 is also connected to the hydraulic rod, and the extrusion rod 10 is squeezed by the hydraulic rod, so that the extrusion rod 10 drives the No. 1 piston 17 to move inside the liquid storage tube 13, and then the No. 1 piston 17 squeezes the water inside the liquid storage tube 13 into each expansion hose 14. Under the pressure of water, the end of each expansion hose 14 drives the two ends of the slot to expand. When the expansion hose 14 expands the slot to become a relatively flat plane, at this time, the multiple expansion slots arranged around the incision will also expand the incision into a nearly circular incision.

[0041] It should also be noted that if Figure 8 and Fig.12As shown, the other end of each hydraulic rod connected to one end of the extrusion rod 10 is connected to the hydraulic ring 7. The interior of the hydraulic ring 7 is filled with water or other liquids. Water is taken as an example here. The upper end of the hydraulic ring 7 is connected to a pressure assembly, which includes a push rod 25 and a pressure cylinder 27. The push rod 25 is inserted into the interior of the pressure cylinder 27, and one end of the push rod 25 located in the pressure cylinder 27 is also fixedly connected to a No. 2 piston 26. The area of ​​the No. 2 piston 26 matches the inner diameter of the pressure cylinder 27. The other end of the pressure cylinder 27 is connected to the hydraulic ring 7 through a pipeline. A motor for driving the push rod 25 is also provided on the outer wall of the pressure cylinder 27. A pull rod is connected between the motor and the push rod 25. The pull rod is pulled downward by the motor, and then the pull rod drives the push rod 25 to move downward. The control switch of the motor is located outside the No. 2 cylinder 2. When in use, the pull rod is pulled downward by the motor, and then the pull rod drives the push rod 25 to move downward, and the push rod 25 drives the No. 2 piston 26 to move downward in the pressure cylinder 27, squeezing the gas in the pressure cylinder 27 into the hydraulic ring 7, and then the liquid in the hydraulic ring 7 is squeezed into the hydraulic rod. It should be noted that the hydraulic rod is composed of two hollow connecting rods connected together, the two hollow connecting rods are the No. 1 connecting rod 8 connected to the hydraulic ring 7, and the No. 2 connecting rod 9 sleeved in the No. 1 connecting rod 8. Under normal conditions, the interiors of the No. 1 connecting rod 8 and the No. 2 connecting rod 9 are filled with liquid, but since the liquid is not squeezed, the No. 1 connecting rod 8 and the No. 2 connecting rod 9 are relatively stationary. When the slot needs to be expanded, the push rod 25 is pressed by the motor so that the push rod 25 drives the No. 2 piston 26 to move downward in the pressure cylinder 27, and the gas in the pressure cylinder 27 is squeezed into the hydraulic ring 7, and then the liquid in the hydraulic ring 7 is squeezed into the No. 1 connecting rod 8, so that the No. 2 connecting rod 9 is squeezed out from the No. 1 connecting rod 8 under the action of pressure, and the squeezed No. 2 connecting rod 9 will slide in the slot during the extrusion process, and two sliders 16 are symmetrically provided on both sides of the end of the No. 2 connecting rod 9, and the two sliders 16 are respectively arranged in the slide grooves 15 on both sides of the slot, and the end of the No. 2 connecting rod 9 is also connected to one end of the extrusion rod 10. Therefore, it is only necessary to make the hydraulic rod drive the slider to move downward in the slide groove 15, and then the hydraulic rod will drive the extrusion rod 10 connected thereto to move downward, and finally the extrusion rod 10 drives the No. 1 piston 17 to move downward, and then the No. 1 piston 17 squeezes the water inside the liquid storage tube 13 into each expansion hose 14.

[0042] In order to disinfect the incision when replacing the catheter and prevent incision infection caused by improper operation, the present application is provided with a disinfection structure for disinfecting the incision, the disinfection structure includes a disinfectant spray chamber 3 arranged below the No. 1 cylinder 1, and two disinfectant storage chambers 23 symmetrically arranged inside the No. 2 cylinder 2, each disinfectant storage chamber 23 is connected to the disinfectant spray chamber 3 through a connecting pipe 24.

[0043] One end of the disinfectant storage chamber 23 penetrates the top of the second cylinder 2 to form an opening 12, which is convenient for replenishing the disinfectant into the disinfectant storage chamber 23 through the opening 12 at any time. Although the opening 12 is connected to the outside, a plug (not shown) is provided on the opening 12 of each disinfectant storage chamber 23 to prevent the disinfectant from leaking out.

[0044] The inner wall of the disinfectant spray chamber 23 is provided with a plurality of spray holes 6. When the incision needs to be disinfected, the disinfectant can be poured into the disinfectant storage chamber 23 through the opening 12 connected to the outside, and then the stopper is covered. After the disinfectant enters the disinfectant storage chamber 23, it enters the disinfectant spray chamber 3 along the connecting pipe 24, and then is sprayed onto the incision through the spray holes 6 of the disinfectant spray chamber 3 to disinfect the incision.

[0045] The present application is provided with a replacement structure for automatically replacing a urinary catheter, the replacement structure includes a drive assembly located inside the No. 1 cylinder 1 and a protection assembly located inside the No. 2 cylinder 2, the drive assembly being located above the protection assembly. The drive assembly includes two rollers 4 symmetrically arranged inside the No. 1 cylinder 1, and two No. 1 drive motors 19 located inside the No. 2 cylinder 2, the two No. 1 drive motors 19 being connected to the two rollers 4, respectively. It should be noted that the two rollers 4 are both foam rollers, and the two No. 1 drive motors 19 are both forward and reverse motors.

[0046] When the catheter needs to be replaced, one end of the used catheter is placed between the two rollers 4, and then the two No. 1 drive motors 19 are started, so that the No. 1 drive motor 19 is reversed, and then the two rollers 4 are reversed, so that the catheter between the two rollers 4 is pulled out from the inside of the No. 1 cylinder 1 following the movement of the rollers 4. After being pulled out, the catheter is placed in a medical waste bin for unified treatment. Then the rollers 4 are disinfected, and a new catheter is placed between the two rollers 4, and then the No. 1 drive motor 19 is rotated forward, so that the rollers 4 rotate, and the new catheter is driven to move downward. When it moves to the incision, the medical staff needs to manually insert one end of the catheter accurately into the incision to complete the replacement.

[0047] When replacing the catheter, the used catheter may contaminate the interior of the No. 1 cylinder 1 when passing through the interior of the No. 1 cylinder 1. Therefore, in order to avoid this problem, the present application also provides a protective structure inside the No. 1 cylinder 1. The protective structure can prevent the interior of the No. 1 cylinder 1 from being contaminated by the catheter, making it convenient to use.

[0048] Specifically, the protective structure includes two rotating shafts 29 movably arranged inside the No. 2 cylinder body 2, and a protective film sleeved on each rotating shaft 29. The two rotating shafts 29 are both located on the same side of the No. 2 cylinder body 2, and the side wall of the No. 1 cylinder body 1 corresponding to each rotating shaft 29 is provided with an opening for the protective film to pass through, the height of the opening matches the rotating shaft 29, the width is half the diameter of the rotating shaft 29, and a No. 2 driving motor 28 is provided on one side of each rotating shaft 29, an unused protective film is wound on one rotating shaft 29, and a used protective film is wound on the other rotating shaft 29, the rotation directions of the two rotating shafts 29 are opposite, and the winding directions of the protective films on the two rotating shafts 29 are opposite, that is, one rotating shaft The protective film on 29 passes through the corresponding opening and enters the interior of the No. 1 cylinder 1. After going around the interior of the No. 1 cylinder 1 for one circle, it goes out from the corresponding opening of the other rotating shaft 29 and is sleeved on the other rotating shaft 29 to protect the interior of the No. 1 cylinder 1. Before or after the catheter needs to be replaced, the No. 2 driving motor 28 of the two rotating shafts 29 is started to rotate in opposite directions, so that the protective film wrapped on the rotating shaft 29 is wound around the interior of the No. 1 cylinder 1 for one circle to protect the interior of the No. 1 cylinder 1 and prevent the catheter from contaminating the interior of the No. 1 cylinder 1 during the replacement process.

[0049] In order to fix the protective film on the inner wall of the No. 1 cylinder 1, the present application also arranges a plurality of fixing parts above and below the inside of the No. 1 cylinder 1, wherein a circle of protruding fixing ring 20 is arranged around the inner diameter of the No. 1 cylinder 1 above the inside of the No. 1 cylinder 1, and a plurality of No. 2 fixing shafts 22 are evenly arranged below the fixing ring 20; a plurality of No. 1 fixing shafts 21 are fixedly arranged on the hydraulic ring 7 at the bottom of the No. 1 cylinder 1, and the positions of the No. 1 fixing shaft 21 and the No. 2 fixing shaft 22 correspond to each other. It should be noted that the height of the protective film is the same as the distance between the No. 1 fixing shaft 21 and the No. 2 fixing shaft 22, and the No. 1 fixing shaft 21 and the No. 2 fixing shaft 22 can fix the protective film between the inner wall of the No. 1 cylinder 1 and the two fixed shafts, so that the protective film can be evenly laid on the inner wall of the No. 1 cylinder 1 to protect the inner wall of the No. 1 cylinder 1.

[0050] In order to facilitate the removal and replacement of the protective film, the present application also opens a protective film placement groove 11 on the top of the second cylinder 2. The protective film placement groove 11 can facilitate medical staff to manually remove and replace the used protective film, which is convenient and quick.

[0051] Example 1 Once the urinary catheter is blocked or the urine drainage is not smooth, the urinary catheter should be replaced in time. When using the automatic urinary catheter replacement device of the nephrology department of the present application, the specific operation is as follows: The patient lies flat on the bed, and the operator takes out an automatic catheter replacement device of the present application, and then puts one end of the used catheter between the rollers 4 from bottom to top, and then drives the No. 1 drive motor 19 to drive the roller 4 to flip, so that the catheter between the two rollers 4 follows the movement of the rollers 4 and is pulled out from the inside of the No. 1 cylinder 1. After being pulled out, the catheter is placed in a medical waste bin for unified treatment. Then the rollers 4 are manually disinfected, and a new catheter is placed between the two rollers 4, and then the No. 1 drive motor 19 rotates forward, so that the rollers 4 rotate, and the new catheter moves downward. When it moves to the incision, the incision can be manually disinfected, and then the medical staff needs to manually insert one end of the catheter accurately into the incision to complete the replacement.

[0052] Example 2 The operation methods of this embodiment are the same as those of embodiment 1, the only difference being that in this embodiment, the incision is first expanded by the expansion component, and then a new urinary catheter is replaced into the incision. Under the action of the expansion component, the slot is expanded into a relatively flat plane, thereby increasing the contact area between the slot and the incision, and increasing the expanded portion of the incision. The incision is supported by multiple expanded slots, so that the incision is finally expanded into a state close to a circle. This facilitates the entry of the urinary catheter, and expanding the incision can also prevent the catheter from touching the edge of the incision when the patient is inserting or removing the catheter, making the patient more comfortable.

[0053] When in use, by pressing the push rod, the push rod drives the No. 2 piston 26 to move downward in the pressure cylinder 27, squeezing the gas in the pressure cylinder 27 into the hydraulic ring 7, and then the liquid in the hydraulic ring 7 is squeezed into the No. 1 connecting rod 8, so that the No. 2 connecting rod 9 is squeezed out from the No. 1 connecting rod 8 under the action of pressure. The squeezed No. 2 connecting rod 9 will slide in the groove during the extrusion process, and two sliders 16 are symmetrically provided on both sides of the end of the No. 2 connecting rod 9. The two sliders 16 are respectively arranged in the slide grooves 15 on both sides of the groove, and the end of the No. 2 connecting rod 9 is also connected to one end of the extrusion rod 10. Therefore, it is only necessary to make the hydraulic rod drive the slider 16 to move downward in the slide groove 15, and then the hydraulic rod will drive the extrusion rod 10 connected thereto to move downward, and finally the extrusion rod 10 drives the No. 1 piston 17 to move downward, and then the No. 1 piston 17 squeezes the water inside the liquid storage tube 13 into each deployment hose 14.

[0054] Example 3 The operation methods of this embodiment are the same as those of embodiment 1, with the only difference being that in order to disinfect the incision when replacing the urinary catheter and prevent incision infection caused by improper operation, this embodiment is provided with a disinfection structure for disinfecting the incision. When in use, the disinfectant is poured into the disinfectant storage chamber 23 through the end connected to the outside, and then the plug is covered. After the disinfectant enters the disinfectant storage chamber 23, it enters the disinfectant spray chamber 3 along the connecting pipe 24, and then is sprayed onto the incision through the spray hole 6 of the disinfectant spray chamber 3 to disinfect the incision.

[0055] Example 4 The operation methods of this embodiment are the same as those of embodiment 1, with the only difference being that a protective structure is provided inside the No. 2 cylinder body. Before or after the catheter needs to be replaced, the No. 2 drive motor 28 of the two rotating shafts 29 is started to rotate in opposite directions, thereby causing the protective film wrapped around the rotating shaft to wrap around the interior of the No. 1 cylinder body 1 for one circle, thereby protecting the interior of the No. 1 cylinder body and preventing the catheter from contaminating the interior of the No. 1 cylinder body 1 during the replacement process.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic urinary catheter replacement device for a nephrology department, comprising a first cylinder (1) and a second cylinder (2), wherein the first cylinder (1) is located inside the second cylinder (2). Features: The first cylinder (1) is provided with a replacement structure for automatically replacing the urinary catheter; An expansion structure for expanding the incision and a disinfection structure for disinfecting the area around the incision are provided below the first cylinder (1), and the expansion structure is located below the disinfection structure.

2. The automatic urinary catheter replacement device for nephrology according to claim 1, Features: The expansion structure comprises a hydraulic ring (7) arranged at the lower part of the interior of the first cylinder (1), and a plurality of movable expansion components are arranged around the lower part of the hydraulic ring (7).

3. The automatic urinary catheter replacement device for nephrology according to claim 2, Features: Each of the movable spreading components comprises a spreading rod (5) connected to a hydraulic ring (7) and a hydraulic rod, wherein the movable end of the hydraulic rod is sleeved in the spreading rod (5).

4. The automatic urinary catheter replacement device for nephrology according to claim 3, Features: A slot is provided on one side of the propping rod (5), sliding grooves (15) are symmetrically provided on both sides of the slot, and two sliding blocks (16) are symmetrically provided on one end of the hydraulic rod, each sliding block (16) being clamped in a corresponding sliding groove (15).

5. The automatic urinary catheter replacement device for nephrology according to claim 4, Features: The slot is also provided with an expansion component for expanding the slot, and the expansion component is connected to the hydraulic rod.

6. The automatic nephrology catheter replacement device according to claim 5, Features: The deployment assembly comprises a plurality of deployment hoses (14) arranged inside the slot, a liquid storage tube (13) connected to each deployment hose (14), and an extrusion rod (10) connected to the liquid storage tube (13), wherein one end of the extrusion rod (10) is connected to a hydraulic rod.

7. The automatic nephrology catheter replacement device according to claim 6, Features: One end of the extrusion rod (10) connected to the liquid storage tube (13) is provided with a No. 1 piston (17) matching the inner cavity area of ​​the liquid storage tube (13).

8. The automatic nephrology catheter replacement device according to claim 1, Features: The disinfection structure comprises a disinfectant liquid spraying chamber (3) arranged below the first cylinder (1), and a disinfectant liquid storage chamber (23) located inside the second cylinder (2), wherein the disinfectant liquid storage chamber (23) is in communication with the disinfectant liquid spraying chamber (3).

9. The automatic nephrology catheter replacement device according to claim 1, Features: The replacement structure comprises a drive assembly located inside the first cylinder (1) and a protection assembly located inside the second cylinder (2), wherein the drive assembly is located above the protection assembly.

10. The automatic nephrology catheter replacement device according to claim 9, Features: The driving assembly comprises two rollers (4) symmetrically arranged inside the No. 1 cylinder (1), and two No. 1 driving motors (19) located inside the No. 2 cylinder (2), the two No. 1 driving motors (19) being connected to the two rollers (4) respectively, and the protective assembly comprises two rotating shafts (29) movably arranged inside the No. 2 cylinder (2), and a protective film sleeved on each rotating shaft (29).

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