Simulation conduit teaching simulator

Abstract

The utility model discloses a simulation catheter teaching simulation appliance, which comprises a rubber arm, a rubber hand and a fixing ring, cavities are arranged in the rubber arm and the rubber hand, the fixing ring is fixedly connected onto the rubber arm for fixing and assisting, a circulation mechanism is arranged on the fixing ring, and the circulation mechanism is connected with the rubber arm. The circulating mechanism comprises a water injection bottle, a double-end catheter, a drainage tube and an adjusting knob; the water injection bottle is communicated with the rubber arm and the rubber hand through the double-end catheter; by means of the mechanism, a user can adjust the flow according to teaching requirements and simulate the blood flow speed in different physiological states, students can visually feel the impact force of the blood flow on the catheter and the stability of the catheter in the blood flow, more real and dynamic operation experience is provided for the students, the mastering degree of the students on catheter operation skills is effectively improved, and the teaching efficiency is improved. Understanding of the vascular structure and catheter operation is enhanced, and the ability to deal with real operation scenes is improved.

Description

Technical Field

[0001] This utility model relates to the field of catheter teaching technology, specifically a simulated catheter teaching simulator. Background Technology

[0002] In the field of modern medical education, especially in teaching catheterization techniques, traditional teaching methods face numerous challenges. In clinical practice, catheter-based interventional procedures such as cardiovascular and urological interventions are complex and high-risk. Direct training on patients is impractical, as it could potentially harm patients and prevent medical students from gaining sufficient repeated practice. Therefore, catheterization teaching simulators that highly simulate human physiological characteristics and surgical scenarios have emerged. These simulators aim to provide medical students and healthcare professionals with a safe, repeatable, and highly realistic operating environment, allowing them to master catheterization techniques in simulated practice, improve their ability to handle complex situations, and thus better serve clinical work, improve medical quality and safety, and cultivate more outstanding and highly skilled professionals for the medical industry.

[0003] However, existing catheterization teaching simulators have significant drawbacks. Most traditional simulators cannot simulate the real blood flow in the human body; they are merely static models of tubes. This makes it difficult for trainees to understand the interaction between the catheter and dynamic blood flow in actual operation, such as the impact force of blood flow on the catheter and the stability of the catheter in the blood flow. At the same time, real human blood vessels have a complex multi-layered structure, including the intima, media, and adventitia. Each layer differs in elasticity, thickness, and texture, and the characteristics of blood vessels change with physiological states. However, existing simulators can usually only simulate the general shape of blood vessels and cannot accurately present the multi-layered characteristics and dynamic changes of blood vessels. This makes it difficult for trainees to accurately grasp the key points of operation, such as the friction between the catheter and the blood vessel wall, the puncture force, and how to avoid damaging the various layers of blood vessel tissue, when facing real surgical scenarios.

[0004] Therefore, this utility model provides a simulated catheter teaching simulator to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a simulated catheter teaching simulator that solves the problem that most traditional simulators mentioned above cannot simulate the real blood flow in the human body.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a simulated catheter teaching simulator, comprising a rubber arm, a rubber hand, and a fixing ring, wherein the interior of the rubber arm and the rubber hand are provided with cavities, and the fixing ring is fixedly connected to the rubber arm for fixation and assistance, and the fixing ring is provided with a circulation mechanism;

[0007] The circulation mechanism includes a water bottle, a double-ended conduit, a drainage tube, and an adjustment knob. The water bottle is connected to the rubber arm and rubber hand through the double-ended conduit. One end of the drainage tube is connected to the cavity inside the rubber hand, and the other end of the drainage tube is connected to the double-ended conduit to circulate the liquid inside the water bottle. The rubber arm has a replacement mechanism that can be disassembled and connected internally. A press valve is provided at the connection between the simulated inner membrane and the rubber arm.

[0008] The replacement mechanism includes a fixing plate, on which simulated outer membrane, simulated middle membrane, and simulated inner membrane are fixedly connected in sequence from the inside to the outside. The simulated outer membrane is made of polyurethane rubber, the simulated middle membrane is made of nitrile rubber, and the simulated inner membrane is made of natural rubber, so that the materials and structures of the simulated outer membrane, simulated middle membrane, and simulated inner membrane are similar to the outer membrane, middle membrane, and inner membrane of human blood vessels.

[0009] Preferably, the water injection bottle is provided with a scale for measuring and controlling the amount of liquid injected, and the liquid inside the water injection bottle is simulated blood.

[0010] Preferably, the fixing ring is provided with anti-slip texture to increase friction, and the fixing ring is provided with an adjustment belt to adapt to different operating requirements.

[0011] Preferably, the double-ended conduit and drainage tube are made of transparent plastic, which facilitates observation of the liquid flow.

[0012] Preferably, the adjusting knob adopts a threaded structure for precise adjustment of liquid flow, and the drainage tube is provided with a scale for displaying the flow rate.

[0013] Preferably, both ends of the fixing plate are fixedly connected to the latches by elastic components, and the end of the rubber hand is provided with a limiting groove that matches the latches to restrict the movement of the fixing plate.

[0014] This invention provides a simulated catheter teaching simulator. Compared with the prior art, it has the following advantages:

[0015] (1) This simulated catheter teaching simulator achieves the effect of simulating the real blood flow in the human body through the circulation mechanism. The water bottle, double-ended catheter, drainage tube and adjustment knob in the circulation mechanism work together. The water bottle provides simulated blood, the double-ended catheter delivers it to the cavity of the rubber arm and rubber hand, the drainage tube realizes liquid circulation, and the adjustment knob precisely controls the flow rate. Users can adjust the flow rate according to teaching needs to simulate the blood flow speed under different physiological conditions, allowing students to intuitively feel the impact of blood flow on the catheter and the stability of the catheter in the blood flow, etc., providing students with a more realistic and dynamic operating experience and effectively improving their mastery of catheter operation skills.

[0016] (2) This simulated catheter teaching simulator achieves the effect of accurately simulating the multi-layer characteristics and dynamic changes of human blood vessels by changing the mechanism. The fixed plate of the changing mechanism and the simulated adventitia, simulated media and simulated intima connected to it are made of materials similar to the adventitia, media and intima of human blood vessels, such as polyurethane rubber, nitrile rubber and natural rubber, to simulate the elasticity, thickness and texture differences of blood vessels. The pressure valve at the connection between the simulated intima and the rubber arm simulates the pressure changes of blood vessels. Moreover, the rubber material can be repeatedly needled and automatically heals. Trainees can use this to accurately grasp the key points of operation such as the friction between the catheter and the blood vessel wall and the puncture force, enhance their understanding of blood vessel structure and catheter operation, and improve their ability to cope with real surgical scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional view of the overall structure of this utility model.

[0019] Figure 3 This is an exploded view of the circulation mechanism structure of this utility model;

[0020] Figure 4 This is a three-dimensional disassembled view of the replacement mechanism structure of this utility model.

[0021] In the picture:

[0022] 1. Rubber arm; 2. Rubber hand; 3. Fixing ring;

[0023] 4. Circulation mechanism; 41. Water bottle; 42. Double-ended tubing; 43. Drainage tube; 44. Adjustment knob;

[0024] 5. Replacement mechanism; 51. Fixing plate; 52. Simulated outer membrane; 53. Simulated middle membrane; 54. Simulated inner membrane; 55. Button; 56. Elastic component; 57. Limiting groove; 58. Press valve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0026] Please see Figures 1 to 4A simulated catheter teaching simulator includes a rubber arm 1, a rubber hand 2 and a fixing ring 3. Both the rubber arm 1 and the rubber hand 2 have cavities inside. The fixing ring 3 is fixedly connected to the rubber arm 1 for fixation and assistance. The fixing ring 3 is provided with a circulation mechanism 4.

[0027] The circulation mechanism 4 includes a water bottle 41, a double-ended conduit 42, a drainage tube 43, and an adjustment knob 44. The water bottle 41 is connected to the cavity inside the rubber arm 1 and the rubber hand 2 through the double-ended conduit 42. One end of the drainage tube 43 is connected to the cavity inside the rubber hand 2, and the other end of the drainage tube 43 is connected to the double-ended conduit 42, so as to circulate the liquid inside the water bottle 41. The rubber arm 1 is internally connected to a replacement mechanism 5.

[0028] The water bottle 41 is equipped with graduations for measuring and controlling the amount of liquid injected. The liquid inside the water bottle 41 is simulated blood. The fixing ring 3 has anti-slip textures to increase friction and an adjustment band to adapt to different operating requirements. The double-ended conduit 42 and drainage tube 43 are made of transparent or semi-transparent plastic for easy observation of liquid flow. The diameter and length of the double-ended conduit 42 and drainage tube 43 can be selected according to actual requirements. The adjusting knob 44 adopts a threaded structure for precise adjustment of liquid flow. The circulation mechanism 4 is equipped with markings to display the flow rate. When simulated blood is injected into the water bottle 41, the clearly marked graduations on the water bottle 41 can accurately control the amount of simulated blood injected, ensuring that the initial amount of simulated blood remains consistent and accurate in each operation. Indeed, the injected simulated blood flows smoothly through the double-ended catheter 42 into the pre-set cavities inside the rubber arm 1 and rubber hand 2, thus constructing a simulated blood circulation system. During this process, the flow rate of the liquid can be precisely adjusted using the adjusting knob 44 (by rotating the adjusting knob 44 downwards, the flow rate of the simulated blood through the cavity is changed, similar to common rotary flow control valves such as existing rotary regulating valves or angle valves). The flow rate of the simulated blood can be adjusted in minute detail. The scale set on the drainage tube 43 to display the flow rate provides the operator with intuitive flow information feedback, enabling the operator to accurately control the flow rate of the simulated blood, thereby simulating the blood flow in the human body under different physiological states, such as normal state, exercise state, or pathological state. Example

[0029] Please see Figures 1 to 4This embodiment provides a technical solution based on Embodiment 1: The replacement mechanism 5 includes a fixing plate 51, on which simulated outer membrane 52, simulated middle membrane 53, and simulated inner membrane 54 are fixedly connected sequentially from the inside to the outside. The simulated outer membrane 52 is made of polyurethane rubber, the simulated middle membrane 53 is made of nitrile rubber, and the simulated inner membrane 54 is made of natural rubber, so that the materials and structures of the simulated outer membrane 52, simulated middle membrane 53, and simulated inner membrane 54 are similar to the outer membrane, middle membrane, and inner membrane of human blood vessels. A press valve 58 is provided at the connection between the simulated inner membrane 54 and the rubber arm 1. Both ends of the fixing plate 51 are fixedly connected to the latches 55 by elastic components 56, and the end of the rubber arm 2 is provided with a limiting groove 57 that matches the latches 55 to restrict the movement of the fixing plate 51. Membrane 54 is made of natural rubber, whose material and structure are highly similar to the adventitia, media, and intima of human blood vessels. Therefore, operators can realistically feel the sensation and friction between the simulated blood vessel and the vessel wall during actual puncture. Furthermore, these rubber materials possess unique physical properties, allowing the simulated blood vessel to withstand multiple needle insertions. When the catheter punctures the simulated blood vessel, the rubber material will deform to a certain extent due to its elasticity and toughness, but it will not cause permanent damage, thus achieving the function of repeated needle insertion. Moreover, after the puncture needle is removed, the rubber material will gradually return to its original shape due to its elasticity, simulating the "automatic healing" effect of the blood vessel wall. This characteristic greatly improves the durability and practicality of the simulation equipment, meeting the needs of trainees for repeated practice.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0031] Working principle: During operation, the simulated conduit teaching simulator is first fixed in a suitable position by using the adjustment belt on the fixing ring 3 according to the specific teaching needs. This adjustment belt has the characteristic of flexible adjustment, which can adapt to various different operating scenarios and the personalized needs of different users. The anti-slip texture on the adjustment belt can effectively increase the stability when fixed and prevent unnecessary displacement of the simulator during operation.

[0032] Then, simulated blood is injected into the water bottle 41. The clearly marked scale on the water bottle 41 can precisely control the amount of simulated blood injected, ensuring that the initial amount of simulated blood is consistent and accurate in each operation. The injected simulated blood will flow smoothly into the pre-set cavity inside the rubber arm 1 and rubber hand 2 through the double-ended tube 42, thereby constructing a simulated blood circulation system. During this process, the threaded structure of the liquid flow rate can be precisely adjusted by using the adjusting knob 44, which can finely adjust the flow rate of the simulated blood. The indicator set on the circulation mechanism 4 to display the flow rate provides the operator with intuitive flow information feedback, enabling the operator to accurately control the flow rate of the simulated blood, thereby simulating the blood flow in the human body under different physiological states, such as normal state, exercise state, or pathological state.

[0033] When performing simulated vascular puncture and other practical training, the operator carefully inserts the catheter into the rubber arm 1. Because the simulated adventitia 52 in the replacement mechanism 5 is made of polyurethane rubber, the simulated media 53 is made of nitrile rubber, and the simulated intima 54 is made of natural rubber, their materials and structures are highly similar to the adventitia, media, and intima of human blood vessels. Therefore, the operator can truly feel the sensation and friction between the catheter and the vessel wall during actual vascular puncture. Furthermore, these rubber materials all possess unique physical properties, allowing the simulated blood vessel to withstand multiple needle insertions. When the catheter punctures the simulated blood vessel, the rubber material will deform to a certain extent due to its own elasticity and toughness, but it will not cause permanent damage, thus achieving the function of repeated needle insertion. Moreover, after the puncture needle is removed, the rubber material will gradually return to its original shape due to its elasticity, simulating the "automatic healing" effect of the blood vessel wall. This characteristic greatly improves the durability and practicality of the simulation equipment, meeting the needs of trainees for repeated practice.

[0034] The carefully designed pressure valve 58 at the connection between the simulated intima 54 and the rubber arm 1 plays an important role in simulating changes in vascular pressure during this process. When the catheter passes through the simulated intima 54, the pressure valve 58 generates a certain resistance, simulating the pressure feedback of human blood vessels when they are punctured. At the same time, it can also realistically simulate the effect of blood seepage, greatly increasing the realism and lifespan of the operation. The latches 55 connected to both ends of the fixing plate 51 by the elastic components 56 match the limiting grooves 57 opened at the end of the rubber arm 2. This design can not only effectively limit the movement of the fixing plate 51 during the operation, ensuring the stability of the simulated blood vessel structure and preventing it from shifting or shaking, thus affecting the operation experience and teaching effect, but also make it convenient for operators to quickly replace simulated blood vessel components of different materials or structures according to teaching needs, thereby meeting diverse teaching scenarios and teaching objectives.

[0035] After the operation, the simulated blood flows back into the water bottle 41 in an orderly manner through the drainage tube 43, realizing the recycling of the simulated blood. This saves resources and prepares the blood for the next operation without the need for frequent replacement of the simulated blood, thus improving the efficiency and convenience of the teaching simulation equipment. The entire process simulates the real blood flow and vascular structure of the human body, providing medical students and medical staff with a highly realistic, safe, reliable, and repeatable training environment. This helps them master catheter operation skills in simulated practice, improve their ability to deal with various complex situations, and thus better serve clinical work, improve medical quality and safety, and cultivate more outstanding and technically skilled professionals for the medical industry.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A simulated catheter teaching simulator, comprising a rubber arm (1), a rubber hand (2), and a fixing ring (3), wherein the rubber arm (1) and the rubber hand (2) are both provided with cavities, characterized in that: The fixing ring (3) is fixedly connected to the rubber arm (1), and a circulation mechanism (4) is provided on the fixing ring (3). The circulation mechanism (4) includes a water bottle (41), a double-ended conduit (42), a drainage tube (43), and an adjustment knob (44). The water bottle (41) is connected to the cavity inside the rubber arm (1) and the rubber hand (2) through the double-ended conduit (42). One end of the drainage tube (43) is connected to the cavity inside the rubber hand (2), and the other end of the drainage tube (43) is connected to the double-ended conduit (42). The rubber arm (1) is internally connected to a replacement mechanism (5). The replacement mechanism (5) includes a fixing plate (51), which is fixedly connected from the inside to the outside with a simulated outer membrane (52), a simulated middle membrane (53), and a simulated inner membrane (54). The simulated outer membrane (52) is made of polyurethane rubber, the simulated middle membrane (53) is made of nitrile rubber, and the simulated inner membrane (54) is made of natural rubber. A press valve (58) is provided at the connection between the simulated inner membrane (54) and the rubber arm (1).

2. The simulated catheter teaching simulator according to claim 1, characterized in that: The water injection bottle (41) is provided with a scale for measuring and controlling the amount of liquid injected, and the liquid inside the water injection bottle (41) is simulated blood.

3. The simulated catheter teaching simulator according to claim 1, characterized in that: The fixing ring (3) is provided with anti-slip texture to increase friction, and the fixing ring (3) is provided with an adjustment belt to adapt to different operating requirements.

4. The simulated catheter teaching simulator according to claim 1, characterized in that: The double-ended conduit (42) and drainage tube (43) are made of transparent plastic, which is easy to observe the flow of liquid.

5. The simulated catheter teaching simulator according to claim 1, characterized in that: The adjustment knob (44) adopts a threaded structure for precise adjustment of liquid flow, and the drain tube (43) is provided with a scale for displaying the flow rate.

6. The simulated catheter teaching simulator according to claim 1, characterized in that: Both ends of the fixed plate (51) are fixedly connected to the button (55) by the elastic component (56), and the end of the rubber hand (2) is provided with a limiting groove (57) that matches the button (55).

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