Stable anti-thrombus central venous catheter with fixing structure

Abstract

The invention belongs to the technical field of central venous catheters, particularly relates to a stable anti-thrombus central venous catheter with a fixing structure, and aims at solving the problems that in the using process of an existing central venous catheter, the length of a cavity tube is inconvenient to adjust and store, so that mistaken touch is likely to happen, medicine precipitation is inconvenient to prevent, and the use cost is low. According to the scheme, the catheter comprises a catheter body and three cavity tubes, a fixing band is fixedly installed on the outer side of the catheter body, a bonding layer is arranged at the bottom of the fixing band, and the outer side and the inner wall of the catheter body are each coated with an anti-coagulation coating; in the using process, the length of the cavity tube can be conveniently adjusted, the cavity tube can be stored conveniently, then the situation that a pipeline is too long to touch by mistake can be avoided, medicine precipitation is conveniently prevented, then the pipeline is prevented from being blocked, the structure is simple, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of central venous catheters, and more particularly to a stable anti-thrombotic central venous catheter with a fixing structure. Background Art

[0002] A central venous catheter (CVC) is a medical device that is inserted into a patient's central vein through puncture and is used for long-term drug administration, blood transfusion, blood sampling, blood pressure monitoring, etc. Common types of central venous catheters include: single-lumen catheter: having only one channel for a single use; double-lumen catheter: having two channels for simultaneous infusion and blood sampling; triple-lumen catheter: having three channels for multiple uses such as infusion, blood sampling, and pressure monitoring; quadruple-lumen catheter: having four channels with more diverse functions.

[0003] The patent document with the publication number CN214512136U discloses a central venous catheter, which includes: a main catheter and a pair of infusion tubes. The main catheter and the pair of infusion tubes are connected through a connector, and the main catheter, the connector, and the pair of infusion tubes are integrally formed by injection molding. An infusion joint is provided on each infusion tube. By providing a main catheter, a connector, and a pair of infusion tubes integrally formed by injection molding, the joint strength between the main catheter and the connector, and between the infusion tube and the connector is increased, thereby preventing the infusion tube or the main catheter from falling off the connector, and further improving the use stability.

[0004] However, during the use of the above patent document, it is not convenient to adjust and store the length of the lumen tube, resulting in easy accidental touch, and it is not convenient to prevent drug precipitation, which further leads to easy blockage of the pipeline. Therefore, we propose a stable anti-thrombotic central venous catheter with a fixing structure to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages in the prior art that during the use of a central venous catheter, it is not convenient to adjust and store the length of the lumen tube, resulting in easy accidental touch, and it is not convenient to prevent drug precipitation, which further leads to easy blockage of the pipeline, and to propose a stable anti-thrombotic central venous catheter with a fixing structure.

[0006] A stable anti-thrombotic central venous catheter with a fixing structure provided by the present application adopts the following technical solution:

[0007] A stable anti-thrombotic central venous catheter with a fixing structure includes:

[0008] A catheter body and three lumen tubes. A fixing band is fixedly installed on the outer side of the catheter body. A sticking layer is arranged at the bottom of the fixing band. Both the outer side and the inner wall of the catheter body are coated with an anticoagulant coating;

[0009] A first branch tube and two second branch tubes. One end of each of the two second branch tubes is fixedly communicated with the outer side of the first branch tube. A disassembly and assembly mechanism is arranged on the first branch tube and the two second branch tubes. The disassembly and assembly mechanism is used for disassembling and assembling the catheter body and the three lumen tubes;

[0010] A mounting seat is fixedly installed on the outer sides of the first branch tube and the two second branch tubes. A power supply is fixedly installed on the top of the mounting seat. Two symmetric mounting plates are fixedly installed on one side of the mounting seat. A winding and unwinding mechanism is arranged on the two mounting plates. The winding and unwinding mechanism is used for adjusting the length of the three lumen tubes. A positioning mechanism is arranged at the bottom of the mounting seat. The positioning mechanism is used for fixedly installing the mounting seat;

[0011] A U-shaped ventilation tube is fixedly installed on the mounting seat. A preheating mechanism is arranged inside the U-shaped ventilation tube. The preheating mechanism is used for preheating the first branch tube and the two second branch tubes. Two first ventilation openings are opened on the U-shaped ventilation tube. A first cavity is opened inside the mounting seat. Second ventilation openings are opened on both inner walls of the two sides of the first cavity. The second ventilation openings are communicated with the first ventilation openings.

[0012] Further, the positioning mechanism includes two clamping plates. Two symmetric chutes are opened at the bottom of the mounting seat. Sliders are slidably installed in the two chutes respectively. The two sliders are fixedly connected with the two clamping plates respectively. A first soft pad is fixedly installed at the bottom of the mounting seat. Second soft pads are fixedly installed on the outer sides of the two clamping plates. When the two sliders approach each other, the two sliders drive the two clamping plates to approach each other respectively. Further, the two clamping plates can clamp the patient's arm to complete the installation of the mounting seat.

[0013] Further, the winding and unwinding mechanism includes two turntables. Rotating shafts are rotatably installed on the two mounting plates respectively. One ends of the two rotating shafts are fixedly connected with the outer sides of the two turntables respectively. Two winding rods are rotatably installed on the two turntables. The two lumen tubes are wound around the outer sides of the two winding rods respectively. A worm gear is fixedly installed on the outer side of the rotating shaft. When the worm gear rotates, the worm gear drives the rotating shaft to rotate. The rotating shaft drives the turntable to rotate. The turntable drives the two winding rods to rotate. The two winding rods can wind and unwind the lumen tubes to facilitate adjusting or storing their usage lengths.

[0014] Further, the preheating mechanism includes a plurality of electric heating rods, and the plurality of electric heating rods are all fixedly installed in the U-shaped ventilation pipe. A fixing rod is fixedly installed in the U-shaped ventilation pipe, a transmission rod is rotatably installed on the fixing rod, a fan blade is fixedly installed on the outer side of the transmission rod, a micro motor is fixedly installed on the outer side of the fixing rod, and the output shaft of the micro motor is fixedly connected to one end of the transmission rod. When the micro motor is turned on, the micro motor drives the transmission rod to rotate, the transmission rod drives the fan blade to rotate, and the wind generated by the rotation of the fan blade can circulate the heat generated by the plurality of electric heating rods, thereby preheating the first branch pipe and the two second branch pipes.

[0015] Further, a movable plate is slidably installed in the first cavity, three knocking blocks are fixedly connected to the top of the movable plate, and the three knocking blocks are respectively matched with the first branch pipe and the two second branch pipes. Two symmetrical guide posts are slidably installed on the movable plate, and one ends of the two guide posts are fixedly connected to the bottom inner wall of the first cavity. When the movable plate moves vertically in a reciprocating manner, the movable plate drives the three knocking blocks to vertically knock the first branch pipe and the two second branch pipes reciprocatingly, causing the first branch pipe and the two second branch pipes to vibrate, thereby preventing the medicine from precipitating.

[0016] Further, an eccentric wheel is fixedly installed on the outer side of the transmission rod, sliding holes are formed in the top inner wall of the first cavity and the bottom of the U-shaped ventilation pipe, and the same movable rod is slidably installed in the two sliding holes. One end of the movable rod is fixedly connected to the top of the movable plate, and the other end of the movable rod is matched with the eccentric wheel. Second springs are sleeved on the outer sides of the two guide posts, and the two ends of each second spring are fixedly connected to the outer side of the guide post and the top of the movable plate respectively. When the transmission rod rotates, the transmission rod drives the eccentric wheel to rotate, the eccentric wheel drives the movable rod to move vertically, and the movable rod drives the movable plate to move vertically.

[0017] Further, installation grooves are formed in the bottom of the slider and the inner wall of the chute, a first conductive column and a second conductive column are respectively slidably installed in the two installation grooves, first springs are fixedly connected to the outer sides of the first conductive column and the second conductive column, one ends of the two first springs are respectively fixedly connected to the inner walls of the two installation grooves, and the first conductive column, the power supply, the micro motor and the second conductive column are connected in sequence. When the first conductive column contacts the second conductive column, the micro motor can be automatically turned on.

[0018] Further, a second cavity is formed in the mounting plate, a second through hole is formed in the top of the mounting plate, the second through hole is communicated with the second cavity, a worm is rotatably installed in the second through hole, a second hand wheel is fixedly installed at one end of the worm, and the worm is meshed with a worm gear. When the second hand wheel is rotated, the second hand wheel drives the worm to rotate, and the worm drives the worm gear to rotate.

[0019] Further, a first through hole is formed in the outer side of the mounting base. The first through hole communicates with the two sliding grooves. A bidirectional lead screw is rotatably installed in the first through hole. The bidirectional lead screw is threadedly connected to the two sliders. One end of the bidirectional lead screw is fixedly connected to a first handwheel. When the first handwheel is rotated, the first handwheel drives the bidirectional lead screw to rotate, and the bidirectional lead screw drives the two sliders to move vertically.

[0020] Further, the disassembly and assembly mechanism includes three first threaded pipes and a second threaded pipe. The three first threaded pipes are respectively fixedly communicated with one end of the three cavity pipes. The second threaded pipe is fixedly communicated with one end of the catheter main body. The three first threaded pipes are respectively threadedly connected to one end of the first branch pipe and the two second branch pipes. The second threaded pipe is threadedly connected to the other end of the first branch pipe. When the three first threaded pipes and the second threaded pipe are rotated, the three cavity pipes and the catheter main body can be quickly disassembled and assembled.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. In this solution, when the first handwheel is rotated, the first handwheel drives the bidirectional lead screw to rotate, and the bidirectional lead screw drives the two sliders to approach each other. The two sliders respectively drive the two clamping plates to approach each other. Further, the two clamping plates can clamp the patient's arm, thereby ensuring the stability of the cavity pipe and the catheter main body.

[0023] 2. In this solution, when the second handwheel is rotated, the second handwheel drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the rotating shaft to rotate, the rotating shaft drives the turntable to rotate, and the turntable drives the two winding rods to rotate. The two winding rods can wind and adjust the cavity pipe, thereby avoiding accidental collision due to too long pipeline.

[0024] 3. In this solution, when the micro motor and the multiple electric heating rods are turned on, the micro motor drives the transmission rod to rotate, the transmission rod drives the fan blades to rotate, and the wind generated by the rotation of the fan blades can circulate the heat generated by the multiple electric heating rods to the first cavity through the U-shaped ventilation pipe. Further, the first branch pipe and the two second branch pipes can be preheated, improving the comfort of drug administration or blood transfusion. At the same time, the transmission rod drives the eccentric wheel to rotate, the movable rod drives the movable plate to move vertically, and the three knocking blocks reciprocally knock on the first branch pipe and the two second branch pipes. The generated vibration can prevent drug precipitation, thereby avoiding pipeline blockage.

[0025] The present invention can facilitate the adjustment and storage of the length of the cavity pipe during use, thereby avoiding accidental collision due to too long pipeline, and is also convenient for preventing drug precipitation, thereby avoiding pipeline blockage. The structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic front view structure diagram of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0027] Figure 2 Schematic diagram of the structure of the first branch pipe and the second branch pipe of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0028] Figure 3 Schematic diagram of the structure of the bottom of the mounting seat of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0029] Figure 4 Schematic diagram of the sectional structure of the mounting seat of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0030] Figure 5 Schematic diagram of the structure of the clamping mechanism of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0031] Figure 6 Schematic diagram of the structure of the preheating mechanism of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0032] Figure 7 Schematic diagram of the structure of the winding and unwinding mechanism of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0033] Figure 8 Schematic diagram of the sectional structure of the mounting plate of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0034] Figure 9 Schematic diagram of the sectional structure of the catheter body of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention;

[0035] Figure 10 Schematic diagram of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention Figure 1 Schematic diagram of the enlarged structure of part A;

[0036] Figure 11 Schematic diagram of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention Figure 1 Schematic diagram of the enlarged structure of part B;

[0037] Figure 12 Schematic diagram of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention Figure 2 Schematic diagram of the enlarged structure of part C;

[0038] Figure 13 Schematic diagram of a stable anti-thrombosis central venous catheter with a fixed structure proposed by the present invention Figure 3Schematic diagram of the enlarged structure of part D;

[0039] Figure 14 A stable anti-thrombotic central venous catheter with a fixed structure proposed by the present invention Figure 6 Schematic diagram of the enlarged structure of part E;

[0040] Figure 15 A stable anti-thrombotic central venous catheter with a fixed structure proposed by the present invention Figure 7 Schematic diagram of the enlarged structure of part F.

[0041] Reference numerals: 1, catheter body; 2, lumen tube; 3, mounting seat; 4, U-shaped ventilation tube; 5, mounting plate; 7, power supply; 8, first cavity; 9, movable plate; 10, first branch pipe; 11, second branch pipe; 12, first threaded pipe; 13, second threaded pipe; 14, anticoagulant coating; 15, second cavity; 16, first soft pad; 17, second soft pad; 18, chute; 19, slider; 20, clamping plate; 21, rotating shaft; 22, turntable; 23, winding rod; 24, worm; 25, second handwheel; 26, worm gear; 27, bidirectional lead screw; 28, first handwheel; 29, first spring; 30, first conductive post; 31, second conductive post; 32, fixed rod; 33, micro motor; 34, transmission rod; 35, fan blade; 36, eccentric wheel; 37, movable rod; 38, electric heating rod; 39, guide post; 40, second spring; 41, knocking block; 42, first ventilation opening; 43, second ventilation opening; 44, fixing belt; 45, adhesive layer. Detailed implementation manners

[0042] 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.

[0043] Embodiment 1

[0044] Referring to Figures 1 - 15 , a stable anti-thrombotic central venous catheter with a fixed structure includes:

[0045] The catheter body 1 and three lumen tubes 2. A fixing belt 44 is fixedly installed on the outer side of the catheter body 1. A paste layer 45 is provided at the bottom of the fixing belt 44. The outer side and the inner wall of the catheter body 1 are both coated with an anticoagulant coating 14;

[0046] A first branch pipe 10 and two second branch pipes 11. One end of each of the two second branch pipes 11 is fixedly communicated with the outer side of the first branch pipe 10. A disassembly and assembly mechanism is provided on the first branch pipe 10 and the two second branch pipes 11. The disassembly and assembly mechanism is used for disassembling and assembling the catheter body 1 and the three lumen tubes 2;

[0047] The mounting base 3 is fixedly installed on the outer sides of the first branch pipe 10 and the two second branch pipes 11. A power supply 7 is fixedly installed on the top of the mounting base 3. Two symmetrical mounting plates 5 are fixedly installed on one side of the mounting base 3. A winding and unwinding mechanism is arranged on the two mounting plates 5. The winding and unwinding mechanism is used to adjust the lengths of the three cavity pipes 2. A positioning mechanism is arranged at the bottom of the mounting base 3. The positioning mechanism is used to fixedly install the mounting base 3;

[0048] The U-shaped ventilation pipe 4 is fixedly installed on the mounting base 3. A preheating mechanism is arranged inside the U-shaped ventilation pipe 4. The preheating mechanism is used to preheat the first branch pipe 10 and the two second branch pipes 11. Two first ventilation openings 42 are formed in the U-shaped ventilation pipe 4. A first cavity 8 is formed in the mounting base 3. Second ventilation openings 43 are formed in both inner walls of the first cavity 8. The second ventilation openings 43 communicate with the first ventilation openings 42. The disassembly and assembly mechanism includes three first threaded pipes 12 and a second threaded pipe 13. One ends of the three first threaded pipes 12 are fixedly communicated with one ends of the three cavity pipes 2 respectively. The second threaded pipe 13 is fixedly communicated with one end of the conduit main body 1. The three first threaded pipes 12 are respectively threadedly connected to one ends of the first branch pipe 10 and the two second branch pipes 11. The second threaded pipe 13 is threadedly connected to the other end of the first branch pipe 10. When the three first threaded pipes 12 and the second threaded pipe 13 are rotated, the three cavity pipes 2 and the conduit main body 1 can be quickly disassembled and assembled.

[0049] Refer to Figure 1 、 Figure 3 、 Figure 5 and Figure 13, the positioning mechanism includes two clamping plates 20. Symmetrically arranged two sliding grooves 18 are formed at the bottom of the mounting seat 3. Sliders 19 are slidably mounted in both of the two sliding grooves 18. The two sliders 19 are respectively fixedly connected to the two clamping plates 20. A first soft pad 16 is fixedly mounted at the bottom of the mounting seat 3. Second soft pads 17 are fixedly mounted on the outer sides of the two clamping plates 20. When the two sliders 19 approach each other, the two sliders 19 respectively drive the two clamping plates 20 to approach each other, and then the two clamping plates 20 can clamp the patient's arm to complete the installation of the mounting seat 3. Mounting grooves are formed in the bottom of the slider 19 and the inner wall of the sliding groove 18. A first conductive column 30 and a second conductive column 31 are respectively slidably mounted in the two mounting grooves. First springs 29 are fixedly connected to the outer sides of the first conductive column 30 and the second conductive column 31. One ends of the two first springs 29 are respectively fixedly connected to the inner walls of the two mounting grooves. The first conductive column 30, the power supply 7, the micro motor 33 and the second conductive column 31 are connected in sequence. When the first conductive column 30 contacts the second conductive column 31, the micro motor 33 can be automatically turned on. A first through hole is formed in the outer side of the mounting seat 3. The first through hole communicates with the two sliding grooves 18. A bidirectional lead screw 27 is rotatably mounted in the first through hole. The bidirectional lead screw 27 is threadedly connected to the two sliders 19. One end of the bidirectional lead screw 27 is fixedly connected to a first hand wheel 28. When the first hand wheel 28 is rotated, the first hand wheel 28 drives the bidirectional lead screw 27 to rotate, and the bidirectional lead screw 27 drives the two sliders 19 to move vertically.

[0050] Refer to Figure 6 and Figure 14, the preheating mechanism includes a plurality of electric heating rods 38, and the plurality of electric heating rods 38 are all fixedly installed in the U-shaped ventilation pipe 4. A fixing rod 32 is fixedly installed in the U-shaped ventilation pipe 4. A transmission rod 34 is rotatably installed on the fixing rod 32. A fan blade 35 is fixedly installed on the outer side of the transmission rod 34. A micro motor 33 is fixedly installed on the outer side of the fixing rod 32. The output shaft of the micro motor 33 is fixedly connected to one end of the transmission rod 34. When the micro motor 33 is turned on, the micro motor 33 drives the transmission rod 34 to rotate, the transmission rod 34 drives the fan blade 35 to rotate, and the wind generated by the rotation of the fan blade 35 can circulate the heat generated by the plurality of electric heating rods 38, so as to preheat the first branch pipe 10 and the two second branch pipes 11. A movable plate 9 is slidably installed in the first cavity 8. Three knocking blocks 41 are fixedly connected to the top of the movable plate 9. The three knocking blocks 41 are respectively matched with the first branch pipe 10 and the two second branch pipes 11. Two symmetrical guide posts 39 are slidably installed on the movable plate 9. One end of each of the two guide posts 39 is fixedly connected to the bottom inner wall of the first cavity 8. When the movable plate 9 moves vertically in a reciprocating manner, the movable plate 9 drives the three knocking blocks 41 to vertically knock the first branch pipe 10 and the two second branch pipes 11 vertically, causing the first branch pipe 10 and the two second branch pipes 11 to vibrate, thereby avoiding drug precipitation. An eccentric wheel 36 is fixedly installed on the outer side of the transmission rod 34. Slide holes are formed in the top inner wall of the first cavity 8 and the bottom of the U-shaped ventilation pipe 4. The same movable rod 37 is slidably installed in the two slide holes. One end of the movable rod 37 is fixedly connected to the top of the movable plate 9. The other end of the movable rod 37 is matched with the eccentric wheel 36. Second springs 40 are sleeved on the outer sides of the two guide posts 39. The two ends of the second spring 40 are respectively fixedly connected to the outer side of the guide post 39 and the top of the movable plate 9. When the transmission rod 34 rotates, the transmission rod 34 drives the eccentric wheel 36 to rotate, the eccentric wheel 36 drives the movable rod 37 to move vertically, and the movable rod 37 drives the movable plate 9 to move vertically.

[0051] Refer to Figure 7 , Figure 8 and Figure 15, the winding and unwinding mechanism includes two turntables 22. Rotating shafts 21 are rotatably installed on both mounting plates 5. One ends of the two rotating shafts 21 are respectively fixedly connected to the outer sides of the two turntables 22. Two winding rods 23 are rotatably installed on the two turntables 22. The two cavity tubes 2 are wound around the outer sides of the two winding rods 23. A worm gear 26 is fixedly installed on the outer side of the rotating shaft 21. When the worm gear 26 rotates, the worm gear 26 drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the turntable 22 to rotate, and the turntable 22 drives the two winding rods 23 to rotate. The two winding rods 23 can wind and unwind the cavity tube 2, facilitating the adjustment or storage of its usage length. A second cavity 15 is formed in the mounting plate 5. A second through hole is formed in the top of the mounting plate 5. The second through hole communicates with the second cavity 15. A worm 24 is rotatably installed in the second through hole. A second handwheel 25 is fixedly installed at one end of the worm 24. The worm 24 meshes with the worm gear 26. When the second handwheel 25 is rotated, the second handwheel 25 drives the worm 24 to rotate, and the worm 24 drives the worm gear 26 to rotate.

[0052] The implementation principle in this embodiment is as follows: When in use, place the patient's arm between the two splints 20, rotate the first handwheel 28, the first handwheel 28 drives the bidirectional lead screw 27 to rotate, the bidirectional lead screw 27 drives the two sliders 19 to approach each other, and the two sliders 19 respectively drive the two splints 20 to approach each other. Thus, the two splints 20 can clamp the arm to ensure the stability of the catheter body 1 and the three lumen tubes 2. At the same time, by rotating the second handwheel 25, the second handwheel 25 drives the worm 24 to rotate, the worm 24 drives the worm gear 26 to rotate, the worm gear 26 drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the turntable 22 to rotate, and the turntable 22 drives the two winding rods 23 to rotate. Thus, the two winding rods 23 can wind the three lumen tubes 2 to adjust their lengths and avoid accidental contact due to excessive length. Then, insert the catheter body 1 into the patient's central vein through puncture. At the same time, when the slider 19 moves to a certain position, the first conductive column 30 contacts the second conductive column 31, and then the micro motor 33 can be automatically turned on. Then, turn on multiple electric heating rods 38. The micro motor 33 drives the transmission rod 34 to rotate, the transmission rod 34 drives the fan blade 35 to rotate, and the wind generated by the rotation of the fan blade 35 can circulate the heat generated by the electric heating rods 38. Thus, the first branch pipe 10 and the two second branch pipes 11 can be preheated. Then, infusion and blood transfusion can be carried out through the three lumen tubes 2. Preheating can improve the comfort during infusion and blood transfusion. At the same time, the transmission rod 34 drives the eccentric wheel 36 to rotate, the eccentric wheel 36 drives the movable rod 37 to move vertically downward, the movable rod 37 drives the movable plate 9 to move vertically downward, and the movable plate 9 stretches the two second springs 40. When the eccentric wheel 36 rotates to a certain position, the two second springs 40 drive the movable plate 9 to reset through the deformation force. Thus, the movable plate 9 drives the three knocking blocks 41 to reciprocally knock the first branch pipe 10 and the two second branch pipes 11, causing the first branch pipe 10 and the two second branch pipes 11 to vibrate. Thus, it can prevent drug precipitation when the infusion speed is slow, thereby avoiding blockage of the pipeline.

[0053] Embodiment 2

[0054] The difference between this embodiment and Embodiment 1 is that a temperature sensor and a controller are fixedly installed in the first cavity 8, and the temperature sensor, the controller, and the multiple electric heating rods 38 are connected in sequence. The temperature sensor can monitor the temperature in the first cavity 8. When the monitored temperature exceeds the set threshold, and the temperature threshold in the first cavity 8 is lower than 36°C, the controller controls the automatic opening and closing of the electric heating rods 38, thereby avoiding damage to the pipeline due to excessive temperature.

[0055] The above is only a preferred specific implementation manner 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 of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A stable anti-thrombotic central venous catheter with a fixed structure, characterized in that: include: A catheter body (1) and three lumens (2), a fixing belt (44) is fixedly installed on the outer side of the catheter body (1), an adhesive layer (45) is arranged at the bottom of the fixing belt (44), and the outer side and inner wall of the catheter body (1) are coated with an anticoagulant coating (14); A first branch tube (10) and two second branch tubes (11), one end of each of the two second branch tubes (11) being fixedly connected to the outer side of the first branch tube (10), and a disassembly mechanism is provided on the first branch tube (10) and the two second branch tubes (11), and the disassembly mechanism is used to disassemble and assemble the catheter body (1) and the three lumens (2); A mounting seat (3), the mounting seat (3) being fixedly mounted on the outside of the first branch pipe (10) and the two second branch pipes (11), a power source (7) being fixedly mounted on the top of the mounting seat (3), two symmetrical mounting plates (5) being fixedly mounted on one side of the mounting seat (3), a winding and unwinding mechanism being arranged on the two mounting plates (5), the winding and unwinding mechanism being used to adjust the lengths of the three cavity pipes (2), a positioning mechanism being arranged on the bottom of the mounting seat (3), the positioning mechanism being used to fixedly mount the mounting seat (3); A U-shaped ventilation pipe (4) is fixedly mounted on a mounting seat (3). A preheating mechanism is arranged in the U-shaped ventilation pipe (4), and the preheating mechanism is used to preheat a first branch pipe (10) and two second branch pipes (11). Two first ventilation openings (42) are arranged on the U-shaped ventilation pipe (4). A first cavity (8) is arranged in the mounting seat (3). Second ventilation openings (43) are arranged on inner walls on both sides of the first cavity (8), and the second ventilation openings (43) are communicated with the first ventilation openings (42).

2. A stable anti-thrombotic central venous catheter with a fixed structure according to claim 1, characterized in that: The disassembly and assembly mechanism comprises three first threaded tubes (12) and a second threaded tube (13); the three first threaded tubes (12) are respectively fixedly connected to one end of the three cavity tubes (2); the second threaded tube (13) is fixedly connected to one end of the catheter body (1); the three first threaded tubes (12) are respectively threadedly connected to one end of the first branch tube (10) and the two second branch tubes (11); and the second threaded tube (13) is threadedly connected to the other end of the first branch tube (10).

3. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 2, characterized in that: The positioning mechanism comprises two clamping plates (20), the bottom of the mounting seat (3) is provided with two symmetrical sliding grooves (18), the two sliding grooves (18) are slidably installed with sliders (19), the two sliders (19) are respectively fixedly connected to the two clamping plates (20), the bottom of the mounting seat (3) is fixedly installed with a first soft pad (16), and the outer sides of the two clamping plates (20) are fixedly installed with a second soft pad (17).

4. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 3, characterized in that: A first through hole is provided on the outer side of the mounting seat (3), the first through hole being in communication with the two slide grooves (18), a bidirectional screw rod (27) being rotatably mounted in the first through hole, the bidirectional screw rod (27) being threadedly connected to the two sliders (19), and a first hand wheel (28) being fixedly connected to one end of the bidirectional screw rod (27).

5. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 4, characterized in that: The winding and unwinding mechanism comprises two rotating disks (22), two mounting plates (5) are both rotatably mounted with rotating shafts (21), one end of the two rotating shafts (21) is respectively fixedly connected to the outer sides of the two rotating disks (22), two winding rods (23) are rotatably mounted on the two rotating disks (22), the two cavity tubes (2) are both wound around the outer sides of the two winding rods (23), and a worm gear (26) is fixedly mounted on the outer sides of the rotating shafts (21).

6. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 5, characterized in that: A second cavity (15) is provided in the mounting plate (5), a second through hole is provided at the top of the mounting plate (5), the second through hole is communicated with the second cavity (15), a worm (24) is rotatably installed in the second through hole, a second hand wheel (25) is fixedly installed at one end of the worm (24), and the worm (24) is meshed with a worm wheel (26).

7. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 6, characterized in that: The preheating mechanism comprises a plurality of electric heating rods (38), the plurality of electric heating rods (38) are fixedly mounted in a U-shaped ventilation pipe (4), a fixed rod (32) is fixedly mounted in the U-shaped ventilation pipe (4), a transmission rod (34) is rotatably mounted on the fixed rod (32), a fan blade (35) is fixedly mounted on the outer side of the transmission rod (34), a micro motor (33) is fixedly mounted on the outer side of the fixed rod (32), and an output shaft of the micro motor (33) is fixedly connected to one end of the transmission rod (34).

8. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 7, characterized in that: The bottom of the slider (19) and the inner wall of the slide groove (18) are both provided with mounting grooves, and a first conductive column (30) and a second conductive column (31) are respectively slidably mounted in the two mounting grooves, and the outer sides of the first conductive column (30) and the second conductive column (31) are both fixedly connected with first springs (29), and one end of the two first springs (29) is respectively fixedly connected with the inner walls of the two mounting grooves, and the first conductive column (30), the power supply (7), the micro motor (33) and the second conductive column (31) are connected in sequence.

9. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 8, characterized in that: A movable plate (9) is slidably mounted in the first cavity (8), and three knocking blocks (41) are fixedly connected to the top of the movable plate (9). The three knocking blocks (41) respectively cooperate with the first branch pipe (10) and the two second branch pipes (11). Two symmetrical guide pillars (39) are slidably mounted on the movable plate (9), and one end of the two guide pillars (39) is fixedly connected to the bottom inner wall of the first cavity (8).

10. The stable anti-thrombotic central venous catheter with a fixed structure according to claim 9, characterized in that: An eccentric wheel (36) is fixedly installed on the outer side of the transmission rod (34), and sliding holes are provided on the top inner wall of the first cavity (8) and the bottom of the U-shaped ventilation pipe (4). The same movable rod (37) is slidably installed in the two sliding holes. One end of the movable rod (37) is fixedly connected to the top of the movable plate (9), and the other end of the movable rod (37) is matched with the eccentric wheel (36). The outer sides of the two guide pillars (39) are sleeved with a second spring (40), and the two ends of the second spring (40) are respectively fixedly connected to the outer side of the guide pillar (39) and the top of the movable plate (9).

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