Pipeline heat preservation heater for ECMO patient transfer process
By designing a pipeline insulation heater for transfer of ECMO patients, the problems of poor heating effect of pipelines, high blood transfusion reactions and blood leakage caused by shaking, and medical accidents that may be caused by movement of the pipeline output end, achieving more efficient heating effects and more stable pipeline transportation in the prior art.
Patent Information
- Application Number
- CN202510374962.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-06-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the transfer of existing ECMO patients, the heating effect of the pipeline is poor, the shaking of the pipeline leads to a high risk of blood transfusion reaction and blood leakage, and the movement of the output end of the pipeline may cause medical accidents.
A pipeline insulation heater is designed, using a support pipe and heating membrane substrate with a cross-section of "work" shape. By fixing the components and driving components, it ensures that the ECMO pipeline maintains stable heating and reduces shaking during the transfer process.
It significantly improves the heating effect of the ECMO pipeline, reduces the risk of blood transfusion reactions and blood leakage, avoids medical accidents caused by movement of the pipeline output end, and extends the service life of the pipeline.
Smart Images
Figure CN120168761A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a pipeline heat preservation heater for the transportation process of ECMO patients. Background Art
[0002] ECMO, namely extracorporeal membrane oxygenation, is an advanced life support technology mainly used for patients with severe cardiopulmonary failure. It temporarily replaces the cardiopulmonary function of patients through extracorporeal circulation equipment, buys time for treatment, and is a key technology for saving patients with severe cardiopulmonary failure, which can significantly improve the survival rate of patients. When transporting critically ill patients, ECMO needs to ensure that the blood temperature in the pipeline is constant (usually maintained at 37 ± 1°C) to avoid complications caused by blood coagulation, hemolysis or hypothermia.
[0003] During the existing transportation process, chemical heating packs are usually attached to the ECMO pipeline for heating. These heating methods still have the following deficiencies:
[0004] 1. The heating range of the chemical heating pack is small, and the time for blood to flow through the heating part during blood delivery is short, so the heating effect is not good.
[0005] 2. There are some suspended parts in the ECMO pipeline between the ECMO therapeutic instrument and the patient. These suspended pipelines are prone to shaking due to external factors. Especially during the transportation of patients, the shaking will be more intense. The mechanical stress generated by the pipeline shaking may cause red blood cell rupture, release free hemoglobin, and trigger blood transfusion reactions such as fever and chills. Research shows that when the pipeline shaking frequency > 2Hz, that is, when the number of shakes per second is greater than 2 times, the hemolysis rate increases significantly. In addition, the shaking of the suspended pipeline is likely to cause the connection between the pipeline input end and the ECMO to become loose, increasing the possibility of blood leakage.
[0006] 3. The chemical heating pack is generally attached near the output end of the ECMO pipeline, and the heating pack does not have a fixing device. When transporting patients, stretchers or directly pushing the hospital bed are usually used to transfer the patient to the ambulance. Due to the unstable moving speed of the stretcher or the hospital bed, the heating pack will drive the movement of the pipeline output end under the action of inertia during the transportation process, which is likely to cause medical accidents.
[0007] 4. During the patient transportation process, since the stretcher and the ECMO therapeutic instrument are moved by different medical staff respectively, there is a difference in their moving speeds, resulting in the uncertainty of the distance between the stretcher and the ECMO therapeutic instrument. When the distance between the two is large, the ECMO pipeline will be pulled, and vice versa, there will be too much pipeline redundancy. The ECMO pipeline being pulled will reduce the service life of the pipeline, and the pipeline redundancy process will increase the possibility of pipeline shaking. Summary of the Invention
[0008] The object of the present invention is to provide a pipeline heat preservation heater for the transportation process of ECMO patients in view of the problems raised in the above-mentioned background technology.
[0009] To achieve the above object, the present invention adopts the following technical solutions: A pipeline heat preservation heater for the transportation process of ECMO patients, comprising:
[0010] A heating component, the heating component includes a support pipe with an "I"-shaped cross-section, a heating film substrate is sleeved on the outer side wall of the support pipe, a heating wire is embedded inside the heating film substrate, through holes for the ECMO pipeline to pass through are opened on both the heating film substrate and the support pipe, and the two through holes are coaxially arranged. The heating component is installed and fixed through a fixing component.
[0011] Further, the material of the heating film substrate is medical silicone, and the material of the heating wire is nano-carbon fiber.
[0012] Further, the fixing component includes an installation cylinder, an installation hole is opened on the side wall of the installation cylinder, a locking screw is arranged in the installation hole, a support plate is fixed on the side of the installation cylinder away from the locking screw, a U-shaped frame is fixed above the support plate and the installation cylinder, an arc-shaped plate is fixed on the vertical rod of the U-shaped frame close to the installation cylinder, the support pipe is placed on the arc-shaped plate, and a central axis is fixed on the other vertical rod of the U-shaped frame, and the central axis extends into the interior of the support pipe.
[0013] Further, a limiting hole for the ECMO pipeline to pass through is opened on the cross bar of the U-shaped frame, a ball is embedded on the side wall of the limiting hole, and a guide wheel is also arranged on the cross bar of the U-shaped frame.
[0014] Further, a driving component for driving the movement of the support pipe is arranged on the support pipe. The driving component includes a nut fixed on the support pipe, an external thread adapted to the nut is arranged on the central axis, the nut is threadedly connected to the central axis, a sleeve is fixed on the nut, a first belt pulley is arranged on the sleeve, a motor is fixed on the support plate, a second belt pulley is fixed on the output shaft of the motor, and the second belt pulley and the first belt pulley are decelerated and driven by a belt.
[0015] Further, a chute is opened on the sleeve, a flat key is slidably connected in the chute, and the first belt pulley is fixed on the flat key.
[0016] Further, a limiting component for restricting the movement of the first belt pulley is arranged on the U-shaped frame. The limiting component includes two mounting rods fixed on the U-shaped frame, a limiting rod is rotatably connected to the bottom of the mounting rod, and annular chutes are opened on both side walls of the first belt pulley, and the limiting rod is slidably connected in the annular chutes.
[0017] Furthermore, a support assembly for preventing the ECMO pipeline from shaking is provided on the U-shaped frame. The support assembly includes a swing rod rotatably connected to the U-shaped frame through a torsion spring. The direction of the swing rod is inclined upward in the natural state of the torsion spring. A spherical sliding seat is provided at the end of the swing rod. A support ball is arranged inside the spherical sliding seat. A through groove for the ECMO pipeline to pass through is formed on the support ball. Drum rollers are arranged on the side walls on both sides of the through groove.
[0018] Furthermore, rectangular grooves are formed on the side walls at the top and bottom of the through groove. A rectangular frame is slidably fitted in the rectangular groove. A roller is arranged inside the rectangular frame. A plurality of movable rods are fixed to the bottom of the rectangular frame. A cylindrical cavity is formed on the support ball. The movable rods extend into the cylindrical cavity. A limit ring is arranged at the end of the movable rod. The limit ring is slidably connected in the cylindrical cavity. A spring is arranged between the bottom of the cylindrical cavity and the limit ring. Two ends of the spring are respectively fixed to the cylindrical cavity and the limit ring. A first conductive sheet is arranged at the bottom of the rectangular frame. A second conductive sheet is arranged at the bottom of the rectangular groove.
[0019] Compared with the existing technology, the advantages of the present invention are as follows:
[0020] 1. By providing a support tube and sleeving the heating film substrate on the outer wall of the support tube, when in use, the ECMO pipeline is wound around the heating film substrate, which increases the heating length of the ECMO pipeline, prolongs the heating time, and greatly improves the heating effect.
[0021] 2. By providing a support assembly, the ECMO pipeline passes through the support ball, and the support ball is used to limit the ECMO pipeline, avoiding the shaking of the suspended pipeline during blood transfusion, reducing the possibility of triggering a blood transfusion reaction, and at the same time preventing the problem that the interface of the ECMO pipeline becomes loose due to shaking, thereby reducing the possibility of blood leakage.
[0022] 3. By providing a fixing assembly, the device is fixed to a stretcher or a hospital bed through a fixing tube, which increases the stability of the output end of the ECMO pipeline, avoids the movement of the output end of the pipeline during the transfer of the patient, and further avoids medical accidents caused by the movement of the output end of the pipeline.
[0023] 4. The present invention is provided with a driving component. During the patient transportation process, when the stretcher or the hospital bed moves farther away from the ECMO therapeutic instrument, the suspended ECMO pipeline moves upward synchronously, so that the first conductive sheet and the second conductive sheet at the top of the through groove are connected and the motor is controlled to rotate forward, releasing the ECMO pipeline on the support tube to avoid the ECMO pipeline from being pulled and extending the service life of the pipeline. When the stretcher or the hospital bed moves closer to the ECMO therapeutic instrument, the suspended ECMO pipeline sags under the action of gravity, so that the first conductive sheet and the second conductive sheet at the bottom of the through groove are connected and the motor is controlled to rotate reversely, winding the redundant ECMO pipeline around the support tube to avoid the pipeline from being redundantly too long and further reducing the possibility of the suspended ECMO pipeline shaking. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 FIG. 6 is an overall structural schematic diagram of a pipeline heat preservation heater for ECMO patient transportation provided by the present invention;
[0025] Figure 2 FIG. 10 is a structural schematic diagram of a heating component of a pipeline heat preservation heater for ECMO patient transportation provided by the present invention;
[0026] Figure 3 FIG. 14 is a structural schematic diagram of a driving component of a pipeline heat preservation heater for ECMO patient transportation provided by the present invention;
[0027] Figure 4 FIG. Figure 3 is an enlarged view at A in FIG.
[0028] Figure 5 FIG. 24 is a front sectional structural schematic diagram of a support ball of a pipeline heat preservation heater for ECMO patient transportation provided by the present invention;
[0029] Figure 6 FIG. 28 is a side sectional structural schematic diagram of a support ball of a pipeline heat preservation heater for ECMO patient transportation provided by the present invention;
[0030] Figure 7 FIG. 32 is a structural schematic diagram of a pipeline heat preservation heater for ECMO patient transportation during the transportation work provided by the present invention;
[0031] Figure 8 FIG. 36 is a structural schematic diagram of the movement state of a swing rod of a pipeline heat preservation heater for ECMO patient transportation provided by the present invention.
[0032] In the figure, 1 is a support tube, 11 is a heating film substrate, 12 is a heating wire, and 13 is a through hole;
[0033] 2 Installation cylinder, 21 Locking screw, 22 Support plate, 23 U-shaped frame, 24 Arc-shaped plate, 25 Central shaft, 231 Limit hole, 232 Ball, 233 Guide wheel;
[0034] 31 Nut, 32 Sleeve, 33 First pulley, 34 Motor, 35 Second pulley, 36 Belt, 321 Chute, 331 Annular chute;
[0035] 41 Installation rod, 42 Limit rod;
[0036] 51 Swing rod, 52 Spherical sliding seat, 53 Support ball, 54 Drum, 531 Through groove, 532 Rectangular groove, 533 Rectangular frame, 534 Roller, 535 Movable rod, 536 Cylindrical cavity, 537 Limit ring, 538 Spring, 539 First conductive sheet, 5310 Second conductive sheet. Detailed implementation mode
[0037] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.
[0038] As Figures 1-8 shown, a pipeline heat preservation heater for the transportation process of ECMO patients includes:
[0039] A heating component, the heating component includes a support tube 1 with an "I"-shaped cross-section. A heating film substrate 11 is sleeved on the outer side wall of the support tube 1. The material of the heating film substrate 11 is medical silicone. A heating wire 12 is embedded inside the heating film substrate 11. The heating wire 12 is electrically connected to an external power supply. The material of the heating wire 12 is nano-carbon fiber. Through holes 13 for the ECMO pipeline to pass through are opened on both the heating film substrate 11 and the support tube 1. The two through holes 13 are coaxially arranged. The heating component is installed and fixed through a fixing component. During use, the output end of the ECMO pipeline is passed through the two through holes 13, and then a part of the ECMO pipeline is evenly wound around the outer side wall of the heating film substrate 11 starting from the position of the through holes 13. Compared with the prior art, the heating method provided by the present invention increases the heating length of the pipeline, prolongs the heating time, and greatly improves the heating effect.
[0040] The fixing component includes an installation cylinder 2. Installation holes are provided on the side wall of the installation cylinder 2, and locking screws 21 are arranged in the installation holes. During specific use, the installation cylinder 2 is installed and fixed at the threaded holes reserved on the stretcher or the hospital bed through the locking screws 21. A support plate 22 is fixed on the side of the installation cylinder 2 away from the locking screws 21. A U-shaped frame 23 is fixed above the support plate 22 and the installation cylinder 2. An arc-shaped plate 24 is fixed on the vertical rod of the U-shaped frame 23 close to the installation cylinder 2. The support tube 1 is placed on the arc-shaped plate 24. The support tube 1 can rotate on the arc-shaped plate 24, and the support tube 1 can also slide horizontally on the arc-shaped plate 24. A central shaft 25 is fixed on the other vertical rod of the U-shaped frame 23, and the central shaft 25 extends into the interior of the support tube 1. A limiting hole 231 through which the ECMO pipeline can pass is provided on the cross bar of the U-shaped frame 23. Ball bearings 232 are embedded on the side wall of the limiting hole 231. A guide wheel 233 is also provided on the cross bar of the U-shaped frame 23. The ball bearings 232 and the guide wheel 233 are used to prevent friction between the ECMO pipeline and the U-shaped frame 23, thereby avoiding damage to the ECMO pipeline caused by friction and extending the service life of the ECMO pipeline.
[0041] A driving component for driving the movement of the support tube 1 is provided on the support tube 1. The driving component includes a nut 31 fixed on the support tube 1. External threads adapted to the nut 31 are provided on the central shaft 25, and the nut 31 is threadedly connected to the central shaft 25. Specifically, when the nut 31 rotates, the support tube 1 rotates synchronously. When the support tube 1 rotates, the ECMO pipeline wound around it is wound up or released. Whether it is wound up or released is determined by the rotation direction of the support tube 1. When the nut 31 rotates, it moves horizontally under the action of thread engagement, thereby driving the support tube 1 to move horizontally, so that the ECMO tube can be evenly wound on the support tube 1. A sleeve 32 is fixed on the nut 31. A first pulley 33 is provided on the sleeve 32. A chute 321 is provided on the sleeve 32. A flat key is slidably connected in the chute 321, and the first pulley 33 is fixed on the flat key. When the first pulley 33 rotates, the sleeve 32 is driven to rotate through the flat key, and the first pulley 33 and the sleeve 32 can slide relative to each other. A motor 34 is fixed on the support plate 22. A second pulley 35 is fixed on the output shaft of the motor 34. The second pulley 35 and the first pulley 33 are decelerated and driven by a belt 36.
[0042] A limiting component for restricting the movement of the first pulley 33 is provided on the U-shaped frame 23. The limiting component includes two mounting rods 41 fixed on the U-shaped frame 23. A limiting rod 42 is rotatably connected to the bottom of the mounting rod 41. Annular chutes 331 are provided on the two side walls of the first pulley 33, and the limiting rod 42 is slidably connected in the annular chutes 331. The horizontal movement of the first pulley 33 is restricted by the limiting component to prevent misalignment between the first pulley 33 and the second pulley 35, thereby ensuring the smoothness of the transmission.
[0043] The U-shaped frame 23 is provided with a support assembly for preventing the ECMO pipeline from shaking. The support assembly includes a swing rod 51 rotatably connected to the U-shaped frame 23 through a torsion spring. In the natural state of the torsion spring, the direction of the swing rod 51 is inclined upward. A spherical sliding seat 52 is provided at the end of the swing rod 51. A support ball 53 is arranged inside the spherical sliding seat 52. A through groove 531 for the ECMO pipeline to pass through is formed on the support ball 53. Roller 54 is provided on the side walls on both sides of the through groove 531. In the non-transport state, the distance between the stretcher and the ECMO therapeutic instrument is fixed. The ECMO pipeline does not contact the top and bottom of the through groove 531. The side wall of the through groove 531 plays a role in limiting the suspended ECMO pipeline, avoiding the shaking of the ECMO pipeline. The roller 54 is used to reduce the wear of the ECMO pipeline.
[0044] Rectangular grooves 532 are formed on the side walls of the top and bottom of the through groove 531. A rectangular frame 533 is slidably fitted in the rectangular groove 532. A roller 534 is arranged inside the rectangular frame 533. The roller 534 is used to reduce the wear of the ECMO pipeline and extend the service life of the pipeline. A plurality of movable rods 535 are fixed to the bottom of the rectangular frame 533. A cylindrical cavity 536 is formed on the support ball 53. The movable rod 535 extends into the cylindrical cavity 536. A limit ring 537 is arranged at the end of the movable rod 535. The limit ring 537 is slidably connected in the cylindrical cavity 536. A spring 538 is arranged between the bottom of the cylindrical cavity 536 and the limit ring 537. The two ends of the spring 538 are respectively fixed to the cylindrical cavity 536 and the limit ring 537. A first conductive sheet 539 is arranged at the bottom of the rectangular frame 533. A second conductive sheet 5310 is arranged at the bottom of the rectangular groove 532. When the first conductive sheet 539 and the second conductive sheet 5310 at the top of the through groove 531 are connected, the motor 34 rotates forward. When the first conductive sheet 539 and the second conductive sheet 5310 at the bottom of the through groove 531 are connected, the motor 34 rotates in reverse;
[0045] Specifically, when the stretcher or hospital bed moves farther away from the ECMO therapeutic apparatus, the suspended ECMO pipeline moves upward synchronously, thereby squeezing the roller 534 at the top of the through groove 531. The roller 534 pushes the rectangular frame 533 to move towards the bottom of the rectangular groove 532, so that the first conductive sheet 539 and the second conductive sheet 5310 at the top of the through groove 531 are connected and control the forward rotation of the motor 34, releasing the ECMO pipeline on the support tube 1, avoiding the ECMO pipeline from being pulled, and extending the service life of the pipeline. When the stretcher or hospital bed moves closer to the ECMO therapeutic apparatus, the suspended ECMO pipeline sags under the action of gravity, squeezing the roller 534 at the bottom of the through groove 531. The roller 534 pushes the rectangular frame 533 to move towards the bottom of the rectangular groove 532, so that the first conductive sheet 539 and the second conductive sheet 5310 at the bottom of the through groove 531 are connected and control the reverse rotation of the motor 34, so that the first conductive sheet 539 and the second conductive sheet 5310 at the bottom of the through groove 531 are connected and control the reverse rotation of the motor, winding the redundant ECMO pipeline around the support tube 1, avoiding the pipeline from being redundant and too long, and further reducing the possibility of the suspended ECMO pipeline shaking.
[0046] The working principle of the present invention is as follows:
[0047] During use, the device is installed on the hospital bed through the fixing component, and the output end of the ECMO pipeline passes through the two through holes 13, and then part of the ECMO pipeline is evenly wound around the outer side wall of the heating film substrate 11 starting from the position of the through holes 13. Compared with the prior art, the heating method provided by the present invention increases the heating length of the pipeline, extends the heating time, and greatly improves the heating effect;
[0048] In the non-transport state, the distance between the hospital bed and the ECMO therapeutic apparatus is fixed, and the ECMO pipeline does not contact the top and bottom of the through groove 531. The side wall of the through groove 531 plays a limiting role on the suspended ECMO pipeline, avoiding the ECMO pipeline from shaking, thereby avoiding the blood transfusion reaction caused by the pipeline shaking. In addition, it can also avoid the loosening problem at the interface caused by the pipeline shaking, and reduce the possibility of blood leakage;
[0049] When transporting the patient, the device is removed from the hospital bed and installed and fixed on the stretcher to increase the stability of the output end of the ECMO pipeline, avoid the movement of the output end of the ECMO pipeline during the patient transportation, and further avoid the medical accident caused by the movement of the pipeline output end. During transportation, since the stretcher and the ECMO therapeutic apparatus are moved by different medical staff respectively, the distance between the stretcher and the ECMO therapeutic apparatus is constantly changing;
[0050] When the stretcher or hospital bed moves farther away from the ECMO therapeutic apparatus, the suspended ECMO pipeline moves upward synchronously, thereby squeezing the roller 534 at the top of the through groove 531. The roller 534 pushes the rectangular frame 533 to move towards the bottom of the rectangular groove 532, so that the first conductive sheet 539 and the second conductive sheet 5310 at the top of the through groove 531 are connected and control the forward rotation of the motor 34, releasing the ECMO pipeline on the support tube 1, avoiding the ECMO pipeline from being pulled, and extending the service life of the pipeline;
[0051] When the stretcher or hospital bed moves closer to the ECMO therapeutic apparatus, the suspended ECMO pipeline sags under the action of gravity, squeezing the roller 534 at the bottom of the through groove 531. The roller 534 pushes the rectangular frame 533 to move towards the bottom of the rectangular groove 532, so that the first conductive sheet 539 and the second conductive sheet 5310 at the bottom of the through groove 531 are connected and control the reverse rotation of the motor 34, so that the first conductive sheet 539 and the second conductive sheet 5310 at the bottom of the through groove 531 are connected and control the reverse rotation of the motor, winding the redundant ECMO pipeline around the support tube 1, avoiding the redundant pipeline from being too long, reducing the possibility of the suspended ECMO pipeline shaking, and thus reducing problems such as blood transfusion reactions and loosening at the interface caused by the pipeline shaking;
[0052] In addition, when the support tube 1 rotates, under the action of the external threads on the nut 31 and the central shaft 25, the support tube 1 moves horizontally synchronously. When the support tube 1 winds up the ECMO pipeline, the pipeline can be evenly wound around the support tube 1, avoiding the ECMO pipeline from being stacked together, and thus avoiding the possibility of the stacked pressure squeezing the pipeline.
[0053] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A pipeline insulation heater used in the ECMO patient transport process, characterized in that: include: A heating component, the heating component comprising a support tube (1) having an I-shaped cross section, a heating film substrate (11) being sleeved on the outer wall of the support tube (1), a heating wire (12) being embedded inside the heating film substrate (11), a through hole (13) for the ECMO tube to pass through being opened on the heating film substrate (11) and the support tube (1), the two through holes (13) being coaxially arranged, and the heating component being installed and fixed by a fixing component.
2. A pipeline insulation heater for ECMO patient transport according to claim 1, characterized in that: The material of the heating film substrate (11) is medical silica gel, and the material of the heating wire (12) is nano-carbon fiber.
3. A pipeline insulation heater for ECMO patient transport according to claim 1, characterized in that: The fixing assembly comprises a mounting tube (2), a mounting hole is formed on a side wall of the mounting tube (2), a locking screw (21) is formed in the mounting hole, a support plate (22) is fixed on a side of the mounting tube (2) away from the locking screw (21), a U-shaped frame (23) is fixed above the support plate (22) and the mounting tube (2), an arc-shaped plate (24) is fixed on a vertical rod of the U-shaped frame (23) close to the mounting tube (2), the support tube (1) is placed on the arc-shaped plate (24), a central axis (25) is fixed on another vertical rod of the U-shaped frame (23), and the central axis (25) extends into the interior of the support tube (1).
4. A pipeline insulation heater for use in the ECMO patient transport process according to claim 3, characterized in that: A limiting hole (231) is provided on the cross bar of the U-shaped frame (23) for the ECMO tube to pass through, a ball (232) is embedded on the side wall of the limiting hole (231), and a guide wheel (233) is also provided on the cross bar of the U-shaped frame (23).
5. A pipeline insulation heater for use in the ECMO patient transport process according to claim 3, characterized in that: The support tube (1) is provided with a driving assembly for driving the support tube (1) to move, the driving assembly comprising a nut (31) fixed on the support tube (1), the central shaft (25) is provided with an external thread matched with the nut (31), the nut (31) is threadedly connected to the central shaft (25), a sleeve (32) is fixed on the nut (31), a first pulley (33) is provided on the sleeve (32), a motor (34) is fixed on the support plate (22), a second pulley (35) is fixed on the output shaft of the motor (34), and the second pulley (35) and the first pulley (33) are driven by a belt (36) for speed reduction.
6. A pipeline insulation heater for use in the ECMO patient transport process according to claim 5, characterized in that: The sleeve (32) is provided with a sliding groove (321), a flat key is slidably connected in the sliding groove (321), and the first pulley (33) is fixed on the flat key.
7. A pipeline insulation heater for use in the ECMO patient transport process according to claim 5, characterized in that: The U-shaped frame (23) is provided with a limit assembly for limiting the movement of the first pulley (33), and the limit assembly includes two mounting rods (41) fixed on the U-shaped frame (23), the bottom of the mounting rod (41) is rotatably connected to the limit rod (42), and the two side walls of the first pulley (33) are provided with annular grooves (331), and the limit rod (42) is slidably connected in the annular grooves (331).
8. A pipeline insulation heater for use in the ECMO patient transport process according to claim 3, characterized in that: The U-shaped frame (23) is provided with a support assembly for preventing the ECMO tube from shaking, and the support assembly comprises a swing rod (51) rotatably connected to the U-shaped frame (23) via a torsion spring, the torsion spring being in a natural state, the swing rod (51) being tilted upward, a spherical sliding seat (52) being provided at the end of the swing rod (51), a support ball (53) being provided in the spherical sliding seat (52), a through groove (531) for the ECMO tube to pass through being provided on the support ball (53), and rollers (54) being provided on the side walls of both sides of the through groove (531).
9. A pipeline insulation heater for use in the ECMO patient transport process according to claim 8, characterized in that: The through slot (531) is provided with a rectangular slot (532) on the top and bottom side walls, a rectangular frame (533) is slidably fitted in the rectangular slot (532), a roller (534) is provided in the rectangular frame (533), a plurality of movable rods (535) are fixed at the bottom of the rectangular frame (533), a columnar cavity (536) is provided on the support ball (53), the movable rod (535) extends into the columnar cavity (536), and the end of the movable rod (535) is A limiting ring (537) is provided at the bottom of the cylindrical cavity (536), and the limiting ring (537) is slidably connected in the cylindrical cavity (536). A spring (538) is provided between the bottom of the cylindrical cavity (536) and the limiting ring (537), and the two ends of the spring (538) are respectively fixed on the cylindrical cavity (536) and the limiting ring (537). A first conductive sheet (539) is provided at the bottom of the rectangular frame (533), and a second conductive sheet (5310) is provided at the bottom of the rectangular groove (532).