Teaching aids for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training

Abstract

The present invention discloses a teaching aid device for simulating training of extracorporeal membrane oxygenation arteriovenous puncture and catheterization, including a periodic pulsating pressurizing device, a simulated liquid suction chamber device, a simulated liquid reflux buffer chamber device and simulation accessories. The present invention belongs to the field of teaching instruments, and specifically refers to a teaching aid device for simulating training of extracorporeal membrane oxygenation arteriovenous puncture and catheterization; the present invention provides pulsation to the simulated liquid in the arterial simulation tube through the proposed periodic pulsating pressurizing device, and in the case of periodic surge of the simulated liquid, the arterial simulation tube is caused to pulsate periodically to simulate the actual arterial beating condition, and the simulated liquid flows into the simulated liquid reflux buffer chamber device, and through the movement of the buffer slide plate, the surge of the simulated liquid passing through the arterial simulation tube is alleviated, and then flows into the venous simulation tube, which can realize the distinction between the pulsation of the artery and the vein, greatly improving the real experience of the simulation teaching aids and improving the teaching quality.

Description

Technical Field

[0001] The invention belongs to the technical field of teaching instruments, and specifically refers to a teaching instrument device for simulating training of extracorporeal membrane oxygenation arteriovenous puncture and catheterization. Background Art

[0002] Both veins and arteries play a vital role in the human body. Blood can be seen as a carrier for transporting nutrients. Veins and arteries are important channels for blood circulation. Through effective blood circulation, these oxygenated blood can be transported to various tissues throughout the body to maintain normal organ function.

[0003] The main differences between arteries and veins lie in their structure, pulsatility, function, distribution, blood flow content and color. During the puncture practice, in order to achieve a practical feel and improve the accuracy and authenticity of medical staff during practice, while simulating the structure, distribution and blood of arteries and veins, in order to achieve a real experience, on this basis, the simulation teaching aids are provided with real pulsatility, imitating the beating of arteries and blood pressure, greatly improving the teaching quality. Summary of the invention

[0004] In view of the above situation, the present invention provides a teaching aid device for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training, which provides pulsation to the simulated fluid in the arterial simulation tube through the proposed periodic pulsation pressurization device. When the simulated fluid surges periodically, the arterial simulation tube pulsates periodically to simulate the actual arterial beating condition, and the simulated fluid flows into the simulated fluid reflux buffer chamber device. Through the movement of the buffer slide plate, the surge of the simulated fluid passing through the arterial simulation tube is alleviated, and then flows into the venous simulation tube, which can realize the distinction between the pulsation of the artery and the vein, greatly enhance the real experience of the simulation teaching aids, and improve the teaching quality.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a teaching aid device for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training, including a periodic pulsation pressurization device, a simulated liquid suction chamber device, a simulated liquid reflux buffer chamber device and a simulation accessory. The periodic pulsation pressurization device, the simulated liquid suction chamber device and the simulated liquid reflux buffer chamber device are connected through the simulation accessory. The periodic pulsation pressurization device is connected to the simulated liquid suction chamber device. The periodic pulsation pressurization device includes a pulsation simulation chamber, a pressurization push chamber, a top cover plate and a connecting component. The pressurization push chamber is arranged at the bottom of the pulsation simulation chamber, the top cover plate is arranged at the top of the pulsation simulation chamber, and the connecting component connects the pulsation simulation chamber and the simulated liquid suction chamber device.

[0006] Furthermore, the pulsation simulation chamber includes a driving component, an adsorption control plate, an upward suction component, an upper sensing plate and a simulation chamber tube, the driving component is connected to the upward suction component, the adsorption control plate is arranged at the top of the upward suction component, the upper sensing plate is arranged at the upper part of the upward suction component, and the simulation chamber tube is wrapped around the outside of the driving component, the adsorption control plate, the upward suction component and the upper sensing plate.

[0007] Preferably, the driving component includes a driving motor and a driving shaft tube, the driving shaft tube is electrically connected to the driving motor, the outer wall of the driving shaft tube is provided with spiral grooves distributed in an array, a partition plate is fixedly provided inside the driving shaft tube, and shaft tube openings are opened in an array on the wall of the driving shaft tube above the partition plate.

[0008] As a further preferred embodiment of the present invention, the adsorption control plate includes an adsorption placement ring, a top contact ring, a bottom adsorption ring A and a bottom adsorption ring B, the top contact ring is fixedly connected to the top of the adsorption placement ring, the bottom adsorption ring A is arranged at the bottom of the adsorption placement ring, and the bottom adsorption ring B is arranged at the bottom of the adsorption placement ring, the bottom adsorption ring B, the bottom adsorption ring A and the adsorption placement ring are arranged concentrically, the outer ring diameter of the bottom adsorption ring B is larger than the outer ring diameter of the bottom adsorption ring A, the bottom adsorption ring A proposed in the device of the present invention normally adsorbs the outer ring of the bearing, and the bottom adsorption ring B normally adsorbs the attracted circular ring on the top of the upper moving ring plate, when the electrode sheet A and the electrode sheet B are connected, the bottom adsorption ring A stops adsorbing the outer ring of the bearing within a certain period of time, the bottom adsorption ring B stops adsorbing the attracted circular ring on the top of the upper moving ring plate, and the driving motor stops working within a certain period of time, so that the upper moving ring plate is conveniently dragged downward, thereby realizing the possibility of moving the upper moving ring plate downward.

[0009] Furthermore, the upward moving suction component includes an upward moving bearing component and an upward moving ring plate component, the upward moving ring plate component is fixedly connected to the upward moving bearing component, the upward moving bearing component includes a bearing inner ring and a bearing outer ring, the bearing outer ring is wrapped around the outside of the bearing inner ring, the top of the bearing inner ring is fixedly connected to the bottom of the adsorption and placement ring, the inner wall of the bearing inner ring is provided with spiral protrusions arranged in an array, the top of the upward moving ring plate component is fixedly provided with a sucked circular ring, both sides of the upward moving ring plate component are fixedly provided with end protrusions, the bottom of the end protrusions is fixedly provided with a drag spring, and the bottom of the upward moving ring plate component is fixedly provided with a pushing pad ring.

[0010] Preferably, the upper sensing plate comprises a follower ring, an electrode sheet A, an electrode sheet B and a support spring, the support spring is arranged between the follower ring and the upper moving ring plate, the electrode sheet A and the electrode sheet B are arranged at the bottom of the follower ring, the electrode sheet A and the electrode sheet B are arranged symmetrically, the electrode sheet A and the electrode sheet B are connected to the drive motor signal, the electrode sheet A and the electrode sheet B are connected to the bottom adsorption ring A signal, the simulation cavity tube is provided with an inner wall sliding groove, the end protrusion is placed in the inner wall sliding groove, the drag spring is arranged in the inner wall sliding groove, the present invention The electrode sheet A and electrode sheet B proposed in the device are in a separated state under normal conditions. When the upper end of the follower ring contacts the inner wrapping ring of the top cover plate, the electrode sheet A and the electrode sheet B contact the top contact ring at the same time. The top contact ring is made of conductive material and connects the passage between the electrode sheet A and the electrode sheet B. At this time, the bottom adsorption ring A stops adsorbing the outer ring of the bearing, which facilitates the drag spring to drag the upper moving ring plate downward, and pressurizes the simulated liquid at the bottom of the upper moving ring plate into the pressurized pushing chamber. The simulated liquid is pushed quantitatively in a short period of time to simulate the pulsation.

[0011] As a further preferred embodiment of the present invention, the pressurized pushing chamber includes a one-way control top ring, a pushing chamber tube and a suspension placement groove, the one-way control top ring is arranged at the top of the pushing chamber tube, the one-way control top ring is fixedly arranged at the bottom of the simulation chamber tube, the one-way control valve is distributed in a circular array on the one-way control top ring, the suspension placement groove is fixedly connected to the bottom of the one-way control top ring, a driving motor is placed in the suspension placement groove, an outer wrapping ring and an inner wrapping ring are fixedly provided at the bottom of the top cover plate, the outer wrapping ring and the inner wrapping ring are both arranged concentrically with the top cover plate, a connecting pipe opening is opened at the center position of the top cover plate, and the connecting component includes a connecting hose, a suction port, a discharge port and a wrapping port. A wrapped bearing, the connecting hose connects the suction port and the discharge port, the suction port is arranged in the simulated liquid suction chamber device, the discharge port is arranged above the partition plate of the drive shaft tube, a wrapped bearing is arranged between the connecting hose on the upper part of the discharge port and the inner wall of the drive shaft tube, the inner wall of the inner ring of the wrapped bearing is fixedly connected to the outer wall of the connecting hose, the outer wall of the outer ring of the wrapped bearing is fixedly connected to the inner wall of the drive shaft tube, the suction port and the discharge port proposed in the device of the present invention are both one-way transfer components, the suction port ensures that the simulated liquid moves from the suction chamber tube to the connecting hose, and the discharge port ensures that the simulated liquid in the connecting hose moves into the simulated chamber tube, so as to avoid the phenomenon of simulated liquid reflux under high pressure.

[0012] Furthermore, the simulated liquid suction chamber device includes a suction chamber tube and an internal support tube, the upper end of the internal support tube is fixedly connected to the bottom of the top plate of the suction chamber tube, the lower end of the suction chamber tube is provided with a suction chamber reflux port, the upper end of the suction chamber tube is provided with a suction chamber suction port, and the top of the suction chamber tube is provided with a simulated liquid injection port.

[0013] Preferably, the simulated liquid reflux buffer chamber device includes a buffer chamber tube and a buffer component, the buffer component is arranged in the buffer chamber tube, one end of the buffer chamber tube is provided with a buffer chamber inlet, and the side wall of the buffer chamber tube is provided with a buffer chamber outlet, the buffer component includes a buffer slide plate and a buffer return spring, the outer wall of the buffer slide plate slides against the inner wall of the buffer chamber tube, and the buffer return spring is arranged between the buffer slide plate and the inner wall of the end of the buffer chamber tube. The simulated liquid reflux buffer chamber device proposed in the device of the present invention receives the pressurized simulated liquid, and changes the spatial volume of the simulated liquid in the buffer chamber tube by squeezing the buffer return spring through the buffer slide plate, and then under the reset property of the buffer return spring, the buffer slide plate resets and pushes the simulated liquid in the buffer chamber tube to flow into the venous simulated tube through the buffer chamber outlet and flow back to the simulated liquid suction chamber device. When the simulated liquid in the arterial simulated tube is punctured and aspirated, although the simulated liquid pressed into the buffer chamber tube is reduced, it does not affect the continuous operation of the device itself, but the simulated liquid in the suction chamber tube in the simulated liquid suction chamber device needs to be replenished.

[0014] As a further preferred embodiment of the present invention, the simulation accessories include an arterial simulation tube and a venous simulation tube, the arterial simulation tube connects the push cavity tube and the buffer cavity inlet, and the venous simulation tube connects the buffer cavity outlet and the suction cavity reflux port. The wall of the arterial simulation tube proposed in the device of the present invention is thicker than that of the venous simulation tube, so as to improve the puncture feel during the simulation teaching process, and because the simulation liquid in the arterial simulation tube imitates the surging of the artery under pressure push, the simulated blood pressure produces a jet effect, which greatly improves the realism of the puncture simulation process.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] (1) The bottom adsorption ring A proposed in the device of the present invention normally adsorbs the outer ring of the bearing, and the bottom adsorption ring B normally adsorbs the adsorbed circular ring on the top of the upper moving ring plate. When the electrode sheet A and the electrode sheet B are connected, the bottom adsorption ring A stops adsorbing the outer ring of the bearing within a certain period of time, and the bottom adsorption ring B stops adsorbing the adsorbed circular ring on the top of the upper moving ring plate. The driving motor stops working within a certain period of time, which facilitates the upper moving ring plate to be dragged downward and realizes the possibility of downward movement of the upper moving ring plate.

[0017] (2) The electrode sheet A and the electrode sheet B proposed in the device of the present invention are in a separated state under normal conditions. When the upper end of the follower ring contacts the inner wrapping ring of the top cover plate, the electrode sheet A and the electrode sheet B contact the top contact ring at the same time. The top contact ring is made of conductive material and connects the passage between the electrode sheet A and the electrode sheet B. At this time, the bottom adsorption ring A stops adsorbing the outer ring of the bearing, which facilitates the drag spring to drag the upper moving ring plate downward, and the simulated liquid at the bottom of the upper moving ring plate is pressurized and pushed into the pressurized pushing chamber. The simulated liquid is quantitatively pushed in a short time to simulate pulsation.

[0018] (3) The suction port and the discharge port proposed in the device of the present invention are both one-way transfer components. The suction port ensures that the simulated liquid moves from the suction cavity tube to the connecting hose, and the discharge port ensures that the simulated liquid in the connecting hose moves into the simulated cavity tube, thereby avoiding the phenomenon of simulated liquid backflow under high pressure.

[0019] (4) The simulated liquid reflux buffer chamber device proposed in the device of the present invention receives the simulated liquid pushed by the pressure, and changes the spatial volume of the simulated liquid in the buffer chamber tube by squeezing the buffer reset spring through the buffer slide plate. Then, under the reset property of the buffer reset spring, the buffer slide plate resets and pushes the simulated liquid in the buffer chamber tube to flow into the venous simulated tube through the buffer chamber outlet, and then flows back to the simulated liquid suction chamber device. When the simulated liquid in the arterial simulated tube is punctured and sucked, although the simulated liquid pressed into the buffer chamber tube is reduced, it does not affect the continuous operation of the device itself, but the simulated liquid in the suction chamber tube of the simulated liquid suction chamber device needs to be supplemented.

[0020] (5) The wall of the arterial simulation tube proposed in the device of the present invention is thicker than that of the venous simulation tube, thereby improving the puncture feel during the simulation teaching process. In addition, since the simulation fluid in the arterial simulation tube imitates the surging of the artery under pressure, the simulated blood pressure produces a jet effect, which greatly improves the realism of the puncture simulation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the teaching aid device for simulating training of extracorporeal membrane oxygenation arteriovenous puncture and catheterization proposed by the present invention;

[0022] Figure 2 It is a side view of the teaching aid device for simulating training of extracorporeal membrane oxygenation arteriovenous puncture and catheterization proposed by the present invention;

[0023] Figure 3 It is a vertical view of the teaching aid device for simulating training of extracorporeal membrane oxygenation arteriovenous puncture and catheterization proposed by the present invention;

[0024] Figure 4 for Figure 2 A cross-sectional view along the cutting line AA;

[0025] Figure 5 for Figure 4 A cross-sectional view along the cutting line BB;

[0026] Figure 6 for Figure 5 A partial enlarged view of point Ⅰ in the middle;

[0027] Figure 7 for Figure 4 A partial enlarged view of the middle II;

[0028] Figure 8 for Figure 6 A partial enlarged view of the middle part III;

[0029] Fig. 9 This is an external schematic diagram of the pressurized push chamber structure proposed by the present invention;

[0030] Fig.10 This is an external schematic diagram of the driving component structure proposed by the present invention.

[0031] Among them, 1. periodic pulsation pressurizing device, 2. simulated liquid suction chamber device, 3. simulated liquid reflux buffer chamber device, 4. simulated accessories, 5. pulsation simulation chamber, 6. pressurized push chamber, 7. top cover plate, 8. connecting member, 9. driving member, 10. adsorption control plate, 11. upward suction member, 12. upper sensing plate, 13. simulated chamber tube, 14. driving motor, 15. driving shaft tube, 16. spiral groove, 17. partition plate, 18. shaft tube opening, 19. adsorption placement ring, 20. top contact ring, 21. bottom adsorption ring A, 22. bottom adsorption ring B, 23. upward bearing member, 24. upward ring plate, 25. bearing inner ring, 26. spiral protrusion, 27. bearing outer ring, 28. sucked circular ring, 29. end protrusion, 30. Drag spring, 31. Follower ring, 32. Electrode sheet A, 33. Electrode sheet B, 34. Support spring, 35. Inner wall sliding groove, 36. One-way control top ring, 37. One-way control valve, 38. Push cavity tube, 39. Suspension placement groove, 40. Outer wrapping ring, 41. Inner wrapping ring, 42. Connecting pipe mouth, 43. Connecting hose, 44. Suction port, 45. Discharge port, 46. Wrapped bearing, 47. Suction cavity tube, 48. Built-in support tube, 49. Suction cavity reflux port, 50. Suction cavity suction port, 51. Simulated liquid injection port, 52. Buffer cavity tube, 53. Buffer component, 54. Buffer cavity inlet, 55. Buffer cavity outlet, 56. Buffer sliding plate, 57. Buffer reset spring, 58. Arterial simulation tube, 59. Venous simulation tube, 60. Push pad ring.

[0032] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] like Figure 1-Figure 10 As shown, the present invention proposes a teaching aid device for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training, including a periodic pulsation pressurizing device 1, a simulated liquid suction chamber device 2, a simulated liquid reflux buffer chamber device 3 and a simulation accessory 4. The periodic pulsation pressurizing device 1, the simulated liquid suction chamber device 2 and the simulated liquid reflux buffer chamber device 3 are connected through the simulation accessory 4. The periodic pulsation pressurizing device 1 is connected to the simulated liquid suction chamber device 2. The periodic pulsation pressurizing device 1 includes a pulsation simulation chamber 5, a pressurization push chamber 6, a top cover plate 7 and a connecting member 8. The pressurization push chamber 6 is arranged at the bottom of the pulsation simulation chamber 5, the top cover plate 7 is arranged at the top of the pulsation simulation chamber 5, and the connecting member 8 connects the pulsation simulation chamber 5 and the simulated liquid suction chamber device 2.

[0036] Among them, the pulsation simulation chamber 5 includes a driving component 9, an adsorption control plate 10, an upward suction component 11, an upper sensing plate 12 and a simulation chamber tube 13. The driving component 9 is connected to the upward suction component 11, the adsorption control plate 10 is arranged at the top of the upward suction component 11, the upper sensing plate 12 is arranged at the upper part of the upward suction component 11, and the simulation chamber tube 13 is wrapped around the outside of the driving component 9, the adsorption control plate 10, the upward suction component 11 and the upper sensing plate 12.

[0037] The driving component 9 includes a driving motor 14 and a driving shaft tube 15. The driving shaft tube 15 is electrically connected to the driving motor 14. The outer wall of the driving shaft tube 15 is provided with spiral grooves 16 distributed in an array. A partition plate 17 is fixedly provided inside the driving shaft tube 15. The wall of the driving shaft tube 15 above the partition plate 17 is provided with shaft tube openings 18 in an array.

[0038] The adsorption control panel 10 includes an adsorption placement ring 19, a top contact ring 20, a bottom adsorption ring A21 and a bottom adsorption ring B22. The top contact ring 20 is fixedly connected to the top of the adsorption placement ring 19, the bottom adsorption ring A21 is arranged at the bottom of the adsorption placement ring 19, and the bottom adsorption ring B22 is arranged at the bottom of the adsorption placement ring 19. The bottom adsorption ring B22, the bottom adsorption ring A21 and the adsorption placement ring 19 are arranged concentrically, and the outer ring diameter of the bottom adsorption ring B22 is larger than the outer ring diameter of the bottom adsorption ring A21.

[0039] The upward suction component 11 includes an upward bearing member 23 and an upward ring plate member 24. The upward ring plate member 24 is fixedly connected to the upward bearing member 23. The upward bearing member 23 includes a bearing inner ring 25 and a bearing outer ring 27. The bearing outer ring 27 is wrapped around the outside of the bearing inner ring 25. The top of the bearing inner ring 25 is fixedly connected to the bottom of the adsorption placement ring 19. The inner wall of the bearing inner ring 25 is provided with spiral protrusions 26 arranged in an array. The top of the upward ring plate member 24 is fixedly provided with a sucked ring 28. End protrusions 29 are fixedly provided on both sides of the upward ring plate member 24. A drag spring 30 is fixedly provided at the bottom of the end protrusion 29. A pushing pad ring 60 is fixedly provided at the bottom of the upward ring plate member 24.

[0040] The upper sensing plate 12 includes a follower ring 31, an electrode sheet A32, an electrode sheet B33 and a support spring 34. The support spring 34 is arranged between the follower ring 31 and the upper moving ring plate 24. The electrode sheet A32 and the electrode sheet B33 are arranged at the bottom of the follower ring 31. The electrode sheet A32 and the electrode sheet B33 are arranged symmetrically. The electrode sheet A32 and the electrode sheet B33 are connected to the signal of the driving motor 14. The electrode sheet A32 and the electrode sheet B33 are connected to the signal of the bottom adsorption ring A21. An inner wall sliding groove 35 is opened on the simulation cavity tube 13. The end protrusion 29 is placed in the inner wall sliding groove 35. The drag spring 30 is arranged in the inner wall sliding groove 35.

[0041] The pressurized push chamber 6 includes a one-way control top ring 36, a push chamber tube 38 and a suspension placement groove 39. The one-way control top ring 36 is arranged at the top of the push chamber tube 38. The one-way control top ring 36 is fixedly arranged at the bottom of the simulation chamber tube 13. One-way control valves 37 are distributed in a circular array on the one-way control top ring 36. The suspension placement groove 39 is fixedly connected to the bottom of the one-way control top ring 36. The drive motor 14 is placed in the suspension placement groove 39. An outer wrapping ring 40 and an inner wrapping ring 41 are fixedly arranged at the bottom of the top cover plate 7. The outer wrapping ring 40 and the inner wrapping ring 41 are both arranged concentrically with the top cover plate 7. A connecting pipe opening 42 is opened at the center position of the circle, and the connecting component 8 includes a connecting hose 43, a suction port 44, a discharge port 45 and a wrapped bearing 46. The connecting hose 43 connects the suction port 44 and the discharge port 45. The suction port 44 is arranged in the simulated liquid suction chamber device 2, and the discharge port 45 is arranged above the partition plate 17 of the driving shaft tube 15. A wrapped bearing 46 is arranged between the connecting hose 43 at the upper part of the discharge port 45 and the inner wall of the driving shaft tube 15. The inner wall of the inner ring of the wrapped bearing 46 is fixedly connected to the outer wall of the connecting hose 43, and the outer wall of the outer ring of the wrapped bearing 46 is fixedly connected to the inner wall of the driving shaft tube 15.

[0042] The simulated liquid suction chamber device 2 includes a suction chamber tube 47 and an internal support tube 48. The upper end of the internal support tube 48 is fixedly connected to the bottom of the top plate of the suction chamber tube 47. The lower end of the suction chamber tube 47 is provided with a suction chamber reflux port 49. The upper end of the suction chamber tube 47 is provided with a suction chamber suction port 50. The top of the suction chamber tube 47 is provided with a simulated liquid injection port 51.

[0043] The simulated liquid reflux buffer chamber device 3 includes a buffer chamber tube 52 and a buffer component 53. The buffer component 53 is arranged in the buffer chamber tube 52. A buffer chamber inlet 54 is provided at one end of the buffer chamber tube 52. A buffer chamber outlet 55 is provided on the side wall of the buffer chamber tube 52. The buffer component 53 includes a buffer slide plate 56 and a buffer return spring 57. The outer wall of the buffer slide plate 56 slides against the inner wall of the buffer chamber tube 52. The buffer return spring 57 is arranged between the buffer slide plate 56 and the inner wall of the end of the buffer chamber tube 52.

[0044] The simulation accessory 4 includes an arterial simulation tube 58 and a venous simulation tube 59 . The arterial simulation tube 58 connects the push cavity tube 38 and the buffer cavity inlet 54 , and the venous simulation tube 59 connects the buffer cavity outlet 55 and the suction cavity reflux port 49 .

[0045] During specific use, simulated liquid is injected through the simulated liquid injection port 51 of the suction cavity 47 before use, and the simulated liquid fills the suction cavity 47, the venous simulated tube 59 and the arterial simulated tube 58. In the initial state, the push cavity 38 of the pressurized push cavity 6 is filled with simulated liquid, the part before the buffer slide plate 56 in the buffer cavity 52 is filled with simulated liquid, and the buffer return spring 57 is in a state of not being subjected to squeezing force, and the connecting hose 43 of the connecting component 8 is filled with simulated liquid. In this case, the initial setting of the device is completed.

[0046] The arterial simulation tube 58 and the venous simulation tube 59 are buried in the simulated torso, the device of the present invention is connected to a power source, the bottom adsorption ring A21 at the bottom of the adsorption placement ring 19 is energized to adsorb the top of the bearing outer ring 27, and the bottom adsorption ring B22 is energized to adsorb the adsorbed ring 28 on the top of the upper moving ring plate 24. At this time, the upper moving bearing member 23, the upper moving ring plate 24 and the adsorption control plate 10 are in a fixed relationship, the driving motor 14 starts to run, and the driving shaft tube 15 electrically connected to the driving motor 14 rotates, and the spiral groove 16 on the outer wall of the driving shaft tube 15 and the inner wall of the bearing inner ring 25 of the upper moving bearing member 23 are engaged with each other. The spiral protrusions 26 are engaged, and as the drive shaft tube 15 rotates, the bearing inner ring 25 is restrained by the upper moving ring plate 24 (the end protrusions 29 fixed on both sides of the upper moving ring plate 24 are engaged in the inner wall sliding grooves 35 of the inner wall of the simulation cavity tube 13), and the upper moving bearing 23, the upper moving ring plate 24 and the adsorption control plate 10 move upward synchronously. During the upward movement, the end protrusions 29 drag the stretching and dragging spring 30. During the upward movement of the upper suction component 11, the bottom space of the gasket ring 60 is pushed to be negative pressure, and the connecting component 8 sucks the simulated liquid in the suction cavity tube 47 through the suction port 44, and the connecting component 8 is connected to the suction port 44. The hose 43 flows to the discharge port 45 and flows into the simulation cavity tube 13 through the shaft tube opening 18 of the driving shaft tube 15; until the upper sensing plate 12 is pushed to the upper part of the simulation cavity tube 13 by the upper moving ring plate 24, the upper sensing plate 12 contacts the inner wrapping ring 41 of the top cover plate 7, and during the continuous rising process of the upper moving ring plate 24, the supporting spring 34 between the top of the upper moving ring plate 24 and the bottom of the follower ring 31 is squeezed, and the fixed contact ring at the top of the adsorption placement ring 19 contacts the electrode sheet A32 and the electrode sheet B33 at the bottom of the follower ring 31, and the bottom adsorption ring A21, the bottom adsorption ring B22 and the driving electrode After the machine 14 is powered off and stops operating for a short period of time, the upper moving ring plate 24 is dragged downward by the drag spring 30 along with the end protrusion 29, and the bearing outer ring 27 connected to the upper moving ring plate 24 is synchronously moved downward, and the synchronous rotation restriction between the bearing inner ring 25 and the bearing outer ring 27 is released. During the downward movement of the bearing outer ring 27, the bearing inner ring 25 is synchronously moved downward, and the bearing inner ring 25 rotates in the opposite direction and moves downward along the drive shaft tube 15. The top of the bearing inner ring 25 is connected to the bottom of the adsorption placement ring 19, and the bearing inner ring 25 drives the adsorption placement ring 19 to rotate during the process of synchronously moving downward with the bearing outer ring 27.

[0047] The extruded simulated liquid enters the push cavity 38 through the one-way control valve 37 of the one-way control top ring 36. Since the push cavity 38 is initially filled, a certain amount of simulated liquid enters the push cavity 38 for a short time and then enters the arterial simulation tube 58. The pushed simulated liquid enters the buffer cavity 52 through the arterial simulation tube 58. When the pressure in the buffer cavity 52 changes due to the entry of the simulated liquid, the buffer slide plate 56 slides along the inner wall of the buffer cavity 52, squeezing the buffer reset spring 57. Under the reset action of the buffer reset spring 57, the buffer slide plate 56 resets, and the simulated liquid in the buffer cavity 52 flows to the venous simulation tube 59 through the buffer cavity outlet 55, and flows back to the suction cavity 47 through the venous simulation tube 59.

[0048] During this process, the running time of the drive motor 14 is T1, and the stopping time of the drive motor 14 is T2. The time of T1 plus T2 is a unit time. By controlling the running speed of the drive motor 14 and controlling the length of the unit time, the pulsation rate of the artery simulation tube 58 within a certain period of time is changed in this way, thereby improving the realism of the puncture simulation.

[0049] The above is the overall workflow of the present invention, and you can repeat this step next time you use it.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A teaching aid device for simulating training of extracorporeal membrane oxygenation arteriovenous puncture and catheterization, characterized in that: The device comprises a periodic pulsation pressurizing device (1), a simulated liquid suction chamber device (2), a simulated liquid reflux buffer chamber device (3) and a simulated accessory (4); the periodic pulsation pressurizing device (1), the simulated liquid suction chamber device (2) and the simulated liquid reflux buffer chamber device (3) are connected via the simulated accessory (4); the periodic pulsation pressurizing device (1) and the simulated liquid suction chamber device (2) are connected; the periodic pulsation pressurizing device (1) comprises a pulsation simulation chamber (5), a pressurizing pushing chamber (6), a top cover plate (7) and a connecting member (8); the pressurizing pushing chamber (6) is arranged at the bottom of the pulsation simulation chamber (5); the top cover plate (7) is arranged at the top of the pulsation simulation chamber (5); and the connecting member (8) connects the pulsation simulation chamber (5) and the simulated liquid suction chamber device (2); The pulsation simulation chamber (5) comprises a driving member (9), an adsorption control plate (10), an upward suction member (11), an upper sensing plate (12) and a simulation chamber tube (13), wherein the driving member (9) is connected to the upward suction member (11), the adsorption control plate (10) is arranged on the top of the upward suction member (11), the upper sensing plate (12) is arranged on the upper part of the upward suction member (11), and the simulation chamber tube (13) is wrapped around the outside of the driving member (9), the adsorption control plate (10), the upward suction member (11) and the upper sensing plate (12); The driving member (9) comprises a driving motor (14) and a driving shaft tube (15); the driving shaft tube (15) is electrically connected to the driving motor (14); spiral grooves (16) are arranged in an array on the outer wall of the driving shaft tube (15); a partition plate (17) is fixedly provided inside the driving shaft tube (15); and shaft tube openings (18) are provided in an array on the tube wall of the driving shaft tube (15) above the partition plate (17); The adsorption control plate (10) comprises an adsorption placement ring (19), a top contact ring (20), a bottom adsorption ring A (21) and a bottom adsorption ring B (22); the top contact ring (20) is fixedly connected to the top of the adsorption placement ring (19); the bottom adsorption ring A (21) is arranged at the bottom of the adsorption placement ring (19); the bottom adsorption ring B (22) is arranged at the bottom of the adsorption placement ring (19); the bottom adsorption ring B (22), the bottom adsorption ring A (21) and the adsorption placement ring (19) are arranged concentrically; and the outer ring diameter of the bottom adsorption ring B (22) is larger than the outer ring diameter of the bottom adsorption ring A (21); The upward suction component (11) comprises an upward bearing member (23) and an upward ring plate member (24), the upward ring plate member (24) being fixedly connected to the upward bearing member (23), the upward bearing member (23) comprising an inner bearing ring (25) and an outer bearing ring (27), the outer bearing ring (27) being wrapped around the outside of the inner bearing ring (25), the top of the inner bearing ring (25) being fixedly connected to the bottom of the adsorption placement ring (19), the inner wall of the inner bearing ring (25) being provided with spiral protrusions (26) arranged in an array, the top of the upward ring plate member (24) being fixedly provided with a sucked circular ring (28), the two sides of the upward ring plate member (24) being fixedly provided with end protrusions (29), the bottom of the end protrusions (29) being fixedly provided with a drag spring (30), and the bottom of the upward ring plate member (24) being fixedly provided with a pushing pad ring (60); The upper sensing plate (12) comprises a follower ring (31), an electrode sheet A (32), an electrode sheet B (33) and a support spring (34); the support spring (34) is arranged between the follower ring (31) and the upper moving ring plate (24); the electrode sheet A (32) and the electrode sheet B (33) are arranged at the bottom of the follower ring (31); the electrode sheet A (32) and the electrode sheet B (33) are symmetrically arranged; the electrode sheet A (32) and the electrode sheet B (33) are connected to the drive motor (14) for signal; the electrode sheet A (32) and the electrode sheet B (33) are connected to the bottom adsorption ring A (21) for signal; an inner wall sliding groove (35) is opened on the simulation cavity tube (13); the end protrusion (29) is placed in the inner wall sliding groove (35); and the drag spring (30) is arranged in the inner wall sliding groove (35).

2. The teaching aid device for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training according to claim 1, characterized in that: The pressurized push chamber (6) comprises a one-way control top ring (36), a push chamber tube (38) and a suspension placement groove (39). The one-way control top ring (36) is arranged at the top of the push chamber tube (38). The one-way control top ring (36) is fixedly connected to the bottom of the simulation chamber tube (13). One-way control valves (37) are distributed in a circumferential array on the one-way control top ring (36). The suspension placement groove (39) is fixedly connected to the bottom of the one-way control top ring (36). A drive motor (14) is placed in the suspension placement groove (39). An outer wrapping ring (40) and an inner wrapping ring (41) are fixedly provided at the bottom of the top cover plate (7). The outer wrapping ring (40) and the inner wrapping ring (41) are both arranged concentrically with the top cover plate (7). The top cover plate (7) A connecting pipe opening (42) is provided at the center position of the circle of the drive shaft tube (15); the connecting component (8) comprises a connecting hose (43), a suction port (44), a discharge port (45) and a wrapping bearing (46); the connecting hose (43) connects the suction port (44) and the discharge port (45); the suction port (44) is arranged in the simulated liquid suction chamber device (2); the discharge port (45) is arranged above the partition plate (17) of the drive shaft tube (15); a wrapping bearing (46) is provided between the connecting hose (43) at the upper part of the discharge port (45) and the inner wall of the drive shaft tube (15); the inner wall of the inner ring of the wrapping bearing (46) is fixedly connected to the outer wall of the connecting hose (43); and the outer wall of the outer ring of the wrapping bearing (46) is fixedly connected to the inner wall of the drive shaft tube (15).

3. The teaching aid device for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training according to claim 2, characterized in that: The simulated liquid suction chamber device (2) comprises a suction chamber tube (47) and an internal support tube (48), the upper end of the internal support tube (48) is fixedly connected to the bottom of the top plate of the suction chamber tube (47), the lower end of the suction chamber tube (47) is provided with a suction chamber reflux port (49), the upper end of the suction chamber tube (47) is provided with a suction chamber suction port (50), and the top of the suction chamber tube (47) is provided with a simulated liquid injection port (51).

4. The teaching aid device for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training according to claim 3, characterized in that: The simulated liquid reflux buffer chamber device (3) comprises a buffer chamber tube (52) and a buffer component (53), wherein the buffer component (53) is arranged in the buffer chamber tube (52), a buffer chamber inlet (54) is arranged at one end of the buffer chamber tube (52), and a buffer chamber outlet (55) is arranged on the side wall of the buffer chamber tube (52), and the buffer component (53) comprises a buffer slide plate (56) and a buffer return spring (57), wherein the outer wall of the buffer slide plate (56) slides against the inner wall of the buffer chamber tube (52), and the buffer return spring (57) is arranged between the buffer slide plate (56) and the inner wall of the end of the buffer chamber tube (52).

5. The teaching aid device for extracorporeal membrane oxygenation arteriovenous puncture and catheterization simulation training according to claim 4, characterized in that: The simulation accessory (4) comprises an arterial simulation tube (58) and a venous simulation tube (59), wherein the arterial simulation tube (58) is connected to the push cavity tube (38) and the buffer cavity inlet (54), and the venous simulation tube (59) is connected to the buffer cavity outlet (55) and the suction cavity return port (49).

Images