Medical simulation puncture needle training device

Abstract

The invention relates to the technical field of puncture needle training, and particularly discloses a medical simulation puncture needle training device which comprises a simulation arm, a simulation puncture part is arranged on the end face of the simulation arm, a simulation part is fixed in the simulation puncture part, and a simulation cavity is formed in the simulation part; the simulation device further comprises a simulation skin simulation assembly and a driving assembly, the simulation skin simulation assembly is arranged in the simulation cavity, the driving assembly is arranged on the side edge of the simulation skin simulation assembly, the simulation skin simulation assembly comprises a first skin layer arranged in the simulation cavity, and a second skin layer is arranged at the bottom of the first skin layer. The driving assembly works to adjust the tension of the first skin layer and the second skin layer, and the skin states of patients of various ages are simulated; adjusting operation of the elasticity degree of the second skin layer, the wrinkle degree of the first skin layer and the bending degree of the simulated blood vessel is achieved, a trainer can experience real touch of skins of different age groups on the same model, and intensified training is carried out in a targeted mode.

Description

Technical Field

[0001] The invention relates to the technical field of puncture needle training, in particular to a medical simulation puncture needle training device. Background Art

[0002] The puncture needle training simulation model is a tool used for medical training, which aims to provide medical staff with a realistic puncture practice environment to help them improve their puncture skills. The simulation training model usually simulates a specific part of the human body, such as the arm, and can simulate the elasticity, toughness and resistance of real human tissue, so that trainees can get a close to real experience when practicing puncture. Most arm models are composed of simulated skin, simulated blood vessels, subcutaneous tissue simulation layer, bone simulation structure and base or bracket. The simulated skin is the outermost layer of the model, usually made of materials such as silicone rubber. The subcutaneous tissue simulation layer is located between the simulated skin and the simulated blood vessels, usually made of materials such as sponge and gel, and is used to simulate the texture and thickness of human subcutaneous tissue. Currently, there are commonly used simulated arm models for puncture needles of the elderly and simulated arm models for adults. The skin of the elderly is loose, dry, and has decreased elasticity, while the skin of adults is relatively tight and elastic. However, the existing fixed models are difficult to accurately present this difference. Trainees cannot experience the real touch of skin of different age groups on the same model, which is not conducive to accurately grasping the puncture force and angle for people between the elderly and adults. Since the skin condition cannot be adjusted according to different age groups, it is difficult for trainees to conduct differentiated puncture exercises based on the skin characteristics of people between the elderly and adults, which is not conducive to improving the puncture skills for different populations in actual clinical operations. It is not easy to accurately simulate real scenes, so that when trainees face real patients, they may make operational errors or be unskilled due to lack of adaptability to different skin conditions, which limits the comprehensiveness and depth of the teaching content and is not conducive to students' systematic learning of puncture knowledge for different patient groups. For this reason, we propose a medical simulation puncture needle training device. Summary of the invention

[0003] The purpose of the present invention is to provide a medical simulation puncture needle training device to solve the problems raised in the above background technology that it is difficult for trainees to conduct differentiated puncture exercises based on the skin characteristics of the elderly and adults, which is not conducive to improving puncture skills for different populations in actual clinical operations, cannot simulate diverse skin conditions, and is not easy to accurately simulate real scenes.

[0004] To achieve the above object, the present invention provides the following technical solution: A medical simulation puncture needle training device, comprising: a simulation arm, the end surface of the simulation arm is provided with a simulation puncture piece, and a simulation piece is fixed inside the simulation puncture piece, and a simulation cavity is opened inside the simulation piece; The device also includes: a simulated skin simulation component and a driving component, wherein the simulated skin simulation component is arranged inside the simulation cavity, the driving component is arranged on the side of the simulated skin simulation component, the simulated skin simulation component includes a skin layer 1 arranged inside the simulation cavity, and a skin layer 2 is arranged at the bottom of the skin layer 1, and the tension between the skin layer 1 and the skin layer 2 is adjusted by the operation of the driving component to simulate the skin conditions of patients of various ages; A blood vessel simulation component and a control component, wherein the blood vessel simulation component is arranged at the bottom of the simulated skin simulation component, and the blood vessel simulation component includes a simulated blood vessel arranged at the bottom of the second skin layer, and the control component is connected to the driving component, and the curvature of the simulated blood vessel is controlled by the control component to simulate the tortuosity of blood vessels of patients of various ages; A disordered component is arranged on the end face of the simulated puncture piece, and the skin state and the blood vessel tortuosity state are randomly and disorderly controlled by the disordered component.

[0005] Wherein, both sides of the skin layer 1 are connected to the connecting belt, one end of the connecting belt away from the skin layer 1 is connected to the skin layer 2, and a guide rod is pressed against the top of the connecting belt.

[0006] Among them, a toothed bar is fixed on the inner wall of the connecting belt, and a gear 1 is arranged on the inner wall of the toothed bar. The gear 1 is fixed on the outer wall of the rotating rod 1, and support rings are fixed on both ends of the outer wall of the rotating rod 1.

[0007] Among them, the driving component includes a motor fixed on the end face of one of the rotating rods, and gear 2 is fixed to the other end of the rotating rod 1, gear 3 is meshed with the side of gear 2, rotating rod 2 is fixed to the center of gear 3, and the end face of rotating rod 2 is rotatably connected to the inner wall of the simulation cavity, a belt is sleeved on the surface of rotating rod 2, and the other end of the belt is sleeved on the outer wall of rotating rod 1.

[0008] The simulated blood vessel is arranged on the surface of the connecting seat, the surface of the simulated blood vessel is pressed by pressing pieces, and the pressing pieces are pressed on the surface of the simulated blood vessel in an alternating manner.

[0009] Among them, a slider is fixed at the bottom of the pressure piece, and the slider is slidably connected to the inside of the sliding cavity. The sliding cavity is opened inside the connecting seat. A metal sheet is fixed on the surface of the slider. Electromagnet 1, electromagnet 2 and electromagnet 3 are fixed to the inner wall of the sliding cavity in sequence.

[0010] Among them, the control component includes a rotating rod three arranged inside the gear two, and a pressure block is fixed on the outer wall of the rotating rod three, a switch seat is fixed on the inner wall of the gear two, and a pressure switch one, a pressure switch two and a pressure switch three are distributed on the inner wall of the switch seat in sequence.

[0011] Among them, the surface of the pressing block is set to be arc-shaped, and the surfaces of the pressing switch 1, the pressing switch 2 and the pressing switch 3 are set to be arc-shaped.

[0012] Among them, the disordered component includes a protection box fixed on the end face of the simulated puncture piece, and the outer circle of the inner wall of the protection box is rotatably connected to a rotating seat one, and the rotating seat one is evenly provided with a trigger cavity one, the inner circle of the inner wall of the protection box is rotatably connected to a rotating seat two, and a trigger cavity two is provided inside the rotating seat two, a connecting tube is fixed at the center of the inner wall of the protection box, a ball hole is provided at the bottom of the connecting tube, a trigger switch one is fixed to the inner wall of the trigger cavity two, and a trigger switch two is fixed to the inner wall of the trigger cavity one.

[0013] Among them, a delivery tube is fixed on the inner wall of the connecting tube, and a delivery port is opened at the bottom of the delivery tube, a ball outlet seat is fixed on the bottom of the protection box, and a trigger ball is arranged inside the ball outlet seat, a rotating disk one is fixed on the surface of the rotating seat one, and a swivel ring one is fixed on the surface of the rotating disk one, a rotating disk two is fixed on the surface of the rotating seat two, and a swivel ring two is fixed on the surface of the rotating disk two.

[0014] The present invention has at least the following beneficial effects: The elasticity of the second skin layer and the wrinkle of the first skin layer are adjusted. The elasticity and wrinkle of the real human skin vary from person to person and are affected by age. Changing these characteristics of the simulated skin can more accurately simulate the skin conditions of different individuals. These complex puncture scenes can be simulated, so that trainees can encounter various possible situations during the training process, so that trainees can better adapt to various changes in actual operations and improve the authenticity and closeness of the training. Different skin elasticity and wrinkle levels will affect the feel and resistance feedback during puncture. Trainees need to constantly feel and adapt to these changes and learn to adjust the strength, angle and depth of puncture according to different skin conditions, so as to improve the accuracy and success rate of puncture. This training helps trainees develop a keen sense of touch and accurate judgment, and better cope with various skin conditions encountered in actual operations. Different skin conditions may expose different weaknesses of trainees. For example, some trainees may easily overexert themselves when dealing with less elastic skin, and may have problems with inaccurate puncture angles when dealing with more wrinkled skin. Through this diversified training and evaluation, trainees can find their own shortcomings, conduct targeted intensive training, and further improve the training effect.

[0015] The adjustment operation of the degree of curvature of the simulated blood vessels is realized. The actual human blood vessels have different degrees of curvature. Randomly changing the degree of curvature of the simulated blood vessels can allow trainees to face various curvature conditions during training, and exercise their ability to accurately judge the angle, depth and direction of needle insertion to adapt to the puncture needs of different curved blood vessels, thereby improving the accuracy of puncture. Different degrees of blood vessel curvature will make the feel of puncture different. Trainees need to practice repeatedly to feel the contact feedback between the puncture needle and the blood vessel wall under different curvatures, better control the puncture force, avoid puncturing too deep or too shallow, and reduce damage to the blood vessels. It can more realistically simulate various vascular conditions encountered in clinical practice, allowing trainees to adapt to the complex situations that may arise in actual operations in advance and improve their operation capabilities in real environments.

[0016] The design of randomly adjusting the elasticity of the second skin layer, the wrinkle degree of the first skin layer and the bending degree of the simulated blood vessels allows trainees to experience the real touch of skin of different age groups on the same model, which is conducive to accurately grasping the puncture force and angle for the elderly and adults. Different puncture exercises can be carried out according to the skin characteristics of the elderly and adults, which is conducive to improving the puncture skills for different populations in actual clinical operations, accurately simulating real scenes, and facilitating students' systematic learning of puncture knowledge for different patient groups.

[0017] The synchronous changes in skin elasticity, wrinkles and blood vessel curvature make the control of resistance, angle and depth during puncture more complicated. Trainers need to consider these factors comprehensively and accurately adjust the force, angle and depth of needle insertion to accurately hit the blood vessel and avoid damaging the surrounding tissue, thereby significantly improving the accuracy and success rate of needle insertion. Different combinations of skin elasticity, wrinkles and blood vessel curvature will produce unique tactile feedback. Through repeated practice, trainers can more keenly perceive the contact state of the puncture needle and tissue under various conditions, better grasp the puncture force and rhythm, and form a more delicate and accurate operating feel. Changes in skin elasticity and wrinkles are often closely related to the state of blood vessels. For example, blood vessels may be more bendable when the skin is loose. Synchronous adjustment of these parameters can reflect this physiological correlation, help trainers better understand the overall response of the human physiological structure during the puncture process, and improve the ability to predict various situations in actual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a schematic diagram of the local structure of the simulation cavity of the present invention; Figure 3 It is a schematic diagram of the partial structure of the simulated skin simulation component of the present invention; Figure 4 It is a schematic diagram of the local structure of the skin layer 1 of the present invention; Figure 5 It is a schematic diagram of the partial structure of the rotating rod 1 of the present invention; Figure 6 It is a partial structural schematic diagram of the control component of the present invention; Figure 7 It is a schematic diagram of the partial structure of the blood vessel simulation component of the present invention; Figure 8 It is a partial structural cross-sectional view of the connecting seat of the present invention; Fig. 9 It is a schematic diagram of the local structure of the disordered component of the present invention; Fig.10 It is a partial structural cross-sectional view of the delivery tube and the ball outlet seat of the present invention; Fig.11 It is a partial structural cross-sectional view of the rotating seat 1 and the rotating seat 2 of the present invention; Fig.12 For the present invention Fig.11 A magnified schematic diagram of area A in the middle.

[0019] In the figure: 11, simulated arm; 12, simulated puncture piece; 13, simulation piece; 14, simulation cavity; 2, simulated skin simulation component; 21, skin layer 1; 22, skin layer 2; 23, guide rod; 24, connecting belt; 25, toothed bar; 26, gear 1; 27, rotating rod 1; 28, supporting ring; 3, driving component; 31, motor; 32, gear 2; 33, gear 3; 34, rotating rod 2; 35, belt; 4, blood vessel simulation component; 41, simulated blood vessel; 42, pressing piece; 43, slider; 44, connecting seat; 45, sliding cavity; 46, metal sheet; 47, electromagnet 1; 48, Electromagnet two; 49, electromagnet three; 5, control component; 51, rotating rod three; 52, pressure block; 53, switch seat; 54, pressure switch one; 55, pressure switch two; 56, pressure switch three; 6, disordered component; 61, protection box; 62, rotating seat one; 63, trigger chamber one; 64, rotating seat two; 65, trigger chamber two; 66, connecting tube; 67, delivery tube; 68, delivery port; 69, ball entry port; 71, trigger switch one; 72, trigger switch two; 73, ball outlet seat; 74, trigger ball; 75, rotating disk one; 76, swivel one; 77, rotating disk two; 78, swivel two. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1 See also Figures 1 to 8 The present invention provides a technical solution: a medical simulation puncture needle training device, comprising: a simulation arm 11, the end surface of the simulation arm 11 is provided with a simulation puncture piece 12, and a simulation piece 13 is fixed inside the simulation puncture piece 12, and a simulation cavity 14 is opened inside the simulation piece 13; The device also includes: a simulated skin simulation component 2 and a driving component 3. The simulated skin simulation component 2 is arranged inside the simulation cavity 14. The driving component 3 is arranged on the side of the simulated skin simulation component 2. The simulated skin simulation component 2 includes a skin layer 1 21 arranged inside the simulation cavity 14, and a skin layer 2 22 is arranged at the bottom of the skin layer 1 21. The tension between the skin layer 1 21 and the skin layer 2 22 is adjusted by the driving component 3 to simulate the skin conditions of patients of various ages. The elasticity and wrinkle degree of the skin of the real human body vary from person to person and are affected by the age factor. By changing these characteristics of the simulated skin, the skin conditions of different individuals can be simulated more accurately. These complex puncture scenes can be simulated, so that the trainee can encounter various possible situations during the training process, so that the trainee can better adapt to various changes in actual operations and improve the authenticity and closeness of the training; The blood vessel simulation component 4 and the control component 5, the blood vessel simulation component 4 is arranged at the bottom of the simulated skin simulation component 2, the blood vessel simulation component 4 includes a simulated blood vessel 41 arranged at the bottom of the skin layer 22, the control component 5 is connected to the driving component 3, and the curvature of the simulated blood vessel 41 is controlled by the control component 5 to simulate the tortuosity of blood vessels of patients of various ages; The disordered component 6 is arranged on the end face of the simulated puncture member 12. The skin state and the blood vessel tortuosity are randomly and disorderly controlled by the disordered component 6. The actual human blood vessels have different degrees of curvature. Changing the curvature degree of the simulated blood vessel 41 can allow trainees to face various curvature conditions during training and train their ability to accurately judge the angle, depth and direction of needle insertion to adapt to the puncture requirements of different curved blood vessels, thereby improving the puncture accuracy. Different degrees of blood vessel curvature will make the feel of puncture different. Trainees need to practice repeatedly to feel the contact feedback between the puncture needle and the blood vessel wall under different curvature conditions, so as to better control the puncture force, avoid puncturing too deep or too shallow, and reduce damage to the blood vessels.

[0022] The two sides of the skin layer 1 21 are connected to the connecting belt 24, and the end of the connecting belt 24 away from the skin layer 1 21 is connected to the skin layer 2 22. The top of the connecting belt 24 is pressed with a guide rod 23, and the guide rod 23 is pressed against the surface of the connecting belt 24, so that the skin layer 1 21 and the skin layer 2 22 are closely fitted, imitating the outer skin state of the patient. The simulated skin outer layer is composed of the skin layer 1 21 and the skin layer 2 22. The skin layer 1 21 imitates the wrinkles of the skin, and the skin layer 2 22 imitates the elastic layer of the skin. The elasticity of the skin layer 2 22 decreases after being stretched. The skin layer 2 22 can be a thermochromic liquid crystal elastomer. When the thermochromic liquid crystal elastomer is stretched, the liquid crystal molecular chains inside it will be oriented along the stretching direction. At the same time, due to the changes in the orientation and structure of the molecular chains, the material is more likely to experience crack propagation when subjected to external force, thereby showing the characteristics of increased brittleness. When the stretching force is removed and the thermochromic liquid crystal elastomer is heated to a certain temperature, usually above its phase transition temperature, the liquid crystal molecular chains obtain enough energy to return to a more disordered state, and the interaction between the molecular chains will also return to the level before stretching. At this time, the elasticity of the material gradually recovers, the brittleness decreases, and finally it basically returns to the state before stretching, achieving the recovery of shape and performance.

[0023] Different skin elasticity and wrinkle levels will affect the feel and resistance feedback during puncture. Trainees need to constantly feel and adapt to these changes, and learn to adjust the force, angle and depth of puncture according to different skin conditions, so as to improve the accuracy and success rate of puncture. This training helps trainees develop a keen sense of touch and accurate judgment, and better cope with various skin conditions encountered in actual operations.

[0024] Different skin conditions may expose different weaknesses of the trainees. For example, some trainees may tend to use excessive force when dealing with skin with less elasticity, and may have problems with inaccurate puncture angles when dealing with skin with more wrinkles. This diversified training and evaluation can help trainees discover their own shortcomings, conduct targeted intensive training, and further improve training results.

[0025] A toothed bar 25 is fixed to the inner wall of the connecting belt 24, and a gear 26 is provided on the inner wall of the gear 25. The gear 26 is fixed to the outer wall of the rotating rod 27. Support rings 28 are fixed at both ends of the outer wall of the rotating rod 27. Through the design of the gear 26 and the toothed bar 25, when the rotating rod 27 rotates, the connecting belt 24 can be driven to move, thereby facilitating the movement of the skin layer 1 21 and the skin layer 2 22.

[0026] The driving assembly 3 includes a motor 31 fixed to the end face of one group of rotating rods 27, and a gear 2 32 is fixed to the other end of the rotating rod 27, a gear 3 33 is meshed with the side of the gear 2 32, a rotating rod 2 34 is fixed to the center of the gear 33, and the end face of the rotating rod 2 34 is rotatably connected to the inner wall of the simulation cavity 14, a belt 35 is sleeved on the surface of the rotating rod 2 34, and the other end of the belt 35 is sleeved on the outer wall of the rotating rod 27. Through the design of gear 2 32, gear 3 33, rotating rod 2 34 and belt 35, the two groups of rotating rods 27 rotate in opposite directions, thereby facilitating the stretching of the skin layer 1 21 and the compression of the skin layer 2 22. The elastic state of the skin layer 1 21 is changed by changing the stretching length of the skin layer 1 21, and the degree of wrinkling of the skin layer 22 is changed by changing the extrusion and compression of the skin layer 22.

[0027] When it is necessary to adjust the wrinkle degree of the skin layer 1 21 and the elasticity degree of the skin layer 2 22, first turn on the working switch of the motor 31, the motor 31 works, drives the rotating rod 1 27 to rotate, the rotating rod 1 27 rotates and drives the gear 2 32, the support ring 28 and the gear 1 26 to rotate synchronously, the gear 2 32 rotates and drives the gear 3 33 to rotate, the gear 3 33 rotates and drives the rotating rod 2 34 to rotate synchronously, the rotating rod 2 34 rotates and drives another group of rotating rods 1 27 to rotate through the belt 35, so that the two groups of rotating rods 1 27 rotate in opposite directions, and one group The rotating rod 1 27 rotates clockwise, and the other set of rotating rods 1 27 rotates counterclockwise, and the gear 1 26 rotates, so that the toothed bar 25 moves, and the toothed bar 25 drives the connecting belt 24 to move synchronously. When the two sets of rotating rods 1 27 rotate in opposite directions, the two sets of connecting belts 24 move, pulling the skin layer 2 22, so that the skin layer 22 is stretched. After the skin layer 22 is stretched, the elasticity is reduced. At the same time, the skin layer 1 21 is squeezed, and the degree of wrinkles changes, thereby realizing the adjustment operation of the elasticity of the skin layer 22 and the wrinkle degree of the skin layer 1 21.

[0028] The simulated blood vessel 41 is arranged on the surface of the connecting seat 44. The surface of the simulated blood vessel 41 is pressed by a pressing piece 42, and the pressing pieces 42 are staggered against the surface of the simulated blood vessel 41. The simulated blood vessel 41 is designed to be curved through the staggered pressing of the adjacent pressing pieces 42. The degree of curvature of the simulated blood vessel 41 can be adjusted by changing the position of the pressing pieces 42.

[0029] A slider 43 is fixed to the bottom of the pressing member 42, and the slider 43 is slidably connected to the inside of the sliding cavity 45. The sliding cavity 45 is opened inside the connecting seat 44. A metal sheet 46 is fixed to the surface of the slider 43. Electromagnet 1 47, electromagnet 2 48 and electromagnet 3 49 are fixed to the inner wall of the sliding cavity 45 in sequence. The positions of electromagnet 1 47 and electromagnet 3 49 in two groups of adjacent sliding cavities 45 are opposite.

[0030] It can more realistically simulate various vascular conditions encountered in clinical practice, allowing trainees to adapt in advance to complex situations that may arise in actual operations and improve their operational capabilities in real environments.

[0031] The control component 5 includes a rotating rod 3 51 arranged inside the gear 2 32, and a pressure block 52 is fixed to the outer wall of the rotating rod 3 51, a switch seat 53 is fixed to the inner wall of the gear 2 32, and a pressure switch 1 54, a pressure switch 2 55 and a pressure switch 3 56 are distributed on the inner wall of the switch seat 53 in sequence. Through the design of the pressure switch 1 54, the pressure switch 2 55 and the pressure switch 3 56, the gear 2 32 can synchronously adjust the power-on state of the electromagnet 1 47, the electromagnet 2 48 and the electromagnet 3 49 during the rotation process, so that the bending state of the blood vessel corresponds to the elasticity and wrinkle degree of the skin. When the patient is older, the skin may have reduced elasticity, increased wrinkle degree and increased blood vessel bending degree. Through the design of the pressure switch 1 54, the pressure switch 2 55 and the pressure switch 3 56, the bending degree of the simulated blood vessel 41 can be synchronously adjusted during the adjustment of the skin elasticity and wrinkle degree.

[0032] The synchronous changes in skin elasticity, wrinkles and blood vessel curvature make the control of resistance, angle and depth during puncture more complicated. Trainees need to consider these factors comprehensively and accurately adjust the force, angle and depth of needle insertion to accurately hit the simulated blood vessel 41 and avoid damaging surrounding tissues, thereby significantly improving the accuracy and success rate of needle insertion. Different combinations of skin elasticity, wrinkles and curved simulated blood vessels 41 will produce unique tactile feedback. Through repeated practice, trainees can more keenly perceive the contact state between the puncture needle and tissue under various conditions, better grasp the puncture force and rhythm, and form a more delicate and accurate operating feel. Changes in skin elasticity and wrinkles are often closely related to the state of the simulated blood vessel 41. For example, when the skin is loose, the simulated blood vessel 41 may be easier to bend. Synchronous adjustment of these parameters can reflect this physiological correlation, help trainees better understand the overall response of the human physiological structure during the puncture process, and improve the ability to predict various situations in actual operations.

[0033] The surface of the pressing block 52 is arranged to be arc-shaped, and the surfaces of the pressing switch 1 54 , the pressing switch 2 55 and the pressing switch 3 56 are arranged to be arc-shaped. The arc-shaped design facilitates the pressing block 52 to press against the pressing switch 1 54 , the pressing switch 2 55 and the pressing switch 3 56 .

[0034] When the gear 2 32 rotates, it synchronously drives the pressing switch 1 54, the pressing switch 2 55 and the pressing switch 3 56 to rotate. At this time, the pressing block 52 gradually presses on the surface of the pressing switch 1 54, the pressing switch 2 55 or the pressing switch 3 56. The moving position of the pressing member 42 is adjusted according to the pressing position of the pressing block 52. When the pressing switch 1 54 is pressed, the electromagnet 1 47 is energized to generate magnetism and attract the metal sheet 46. When the pressing switch 2 55 is pressed, the electromagnet 2 48 is energized to generate magnetism and attract the metal sheet 46. Sheet 46, when the pressing switch three 56 is pressed, the electromagnet three 49 is energized and generates magnetism to attract the metal sheet 46. After the metal sheet 46 is adsorbed, the metal sheet 46 drives the slider 43 to move synchronously. The slider 43 slides inside the sliding cavity 45, and the slider 43 drives the pressing member 42 to move. The pressing member 42 presses the simulated blood vessel 41 to change the curvature of the simulated blood vessel 41. When the electromagnet three 49 is energized, the curvature of the simulated blood vessel 41 is the largest. When the electromagnet one 47 is energized, the curvature of the simulated blood vessel 41 is the smallest.

[0035] Embodiment 2 See also Figures 9 to 12 The disordered component 6 includes a protection box 61 fixed on the end face of the simulated puncture member 12, and the outer circle of the inner wall of the protection box 61 is rotatably connected to a rotating seat 1 62, and the rotating seat 1 62 is evenly provided with a trigger cavity 1 63, the inner circle of the inner wall of the protection box 61 is rotatably connected to a rotating seat 2 64, and a trigger cavity 2 65 is provided inside the rotating seat 2 64, a connecting tube 66 is fixed at the center of the inner wall of the protection box 61, and a ball inlet 69 is provided at the bottom of the connecting tube 66, a trigger switch 1 71 is fixed to the inner wall of the trigger cavity 2 65, and a trigger switch 2 72 is fixed to the inner wall of the trigger cavity 1 63. Through the design of multiple groups of trigger switches 1 71 and multiple groups of trigger switches 2 72, it is convenient to randomly trigger the trigger ball 74, control the multiple groups of gears of the motor 31 and the power-on states of the electromagnet 1 47, the electromagnet 2 48 and the electromagnet 3 49, so as to realize the random change of the elasticity and wrinkle degree of the outer layer of the simulated skin, and the random change of the curvature degree of the simulated blood vessel 41.

[0036] Randomly changing the characteristics of the simulated skin can allow trainees to face various unexpected situations during training, prompting them to learn to quickly analyze and judge, and adjust their operating methods in a timely manner. The cultivation of this adaptability is crucial for dealing with emergencies in actual medical scenarios. It can reduce puncture errors caused by changes in skin conditions and improve trainees' operating levels in complex situations.

[0037] When faced with simulated blood vessels 41 with random and different degrees of curvature, trainees need to constantly adjust their operating methods and ways of thinking to adapt to such individual differences. This training helps to cultivate trainees' flexibility and adaptability, enabling them to better provide safe and effective puncture services for different patients.

[0038] The simultaneous random adjustment of multiple parameters increases the uncertainty and complexity of training, simulating various unexpected situations and individual differences that may occur in actual clinical practice. When faced with these changes, trainees need to quickly analyze and make corresponding adjustments, thereby effectively cultivating their adaptability and decision-making abilities, enabling them to calmly deal with various complex situations in actual operations.

[0039] A delivery tube 67 is fixed to the inner wall of the connecting tube 66, and a delivery port 68 is opened at the bottom of the delivery tube 67, a ball outlet seat 73 is fixed to the bottom of the protection box 61, and a trigger ball 74 is arranged inside the ball outlet seat 73, a rotating disk 1 75 is fixed to the surface of the rotating seat 1 62, and a swivel ring 1 76 is fixed to the surface of the rotating disk 1 75, a rotating disk 2 77 is fixed to the surface of the rotating seat 2 64, and a swivel ring 2 78 is fixed to the surface of the rotating disk 2 77, which is convenient for delivering and removing the trigger ball 74 and is conducive to the reuse of the trigger ball 74.

[0040] When it is necessary to randomly control the wrinkle degree of skin layer 1 21 and the elasticity degree of skin layer 2 22, first rotate swivel 2 78 and swivel 1 76, and the number of rotations of swivel 2 78 and swivel 1 76 is random. Then, the trigger ball 74 is dropped from the inside of the delivery tube 67. Under the action of gravity, the trigger ball 74 enters the inside of the connecting tube 66 through the delivery port 68, and then randomly falls into one of the groups of ball ports 69. Under the action of gravity, it falls into the inside of the trigger cavity 2 65 and presses against the trigger switch 1 71. After the trigger switch 1 71 is pressed, it receives a signal. After the signal is transmitted to the controller, the controller controls the working gear of the motor 31. The design of multiple groups of trigger switches 1 71 corresponds to the working gears of multiple groups of motors 31 to achieve random control. The working gear of the motor 31 is set to realize random control of the wrinkle degree of the skin layer 1 21 and the elasticity degree of the skin layer 2 22. Under the action of gravity, the trigger ball 74 continues to fall, and the trigger ball 74 falls into the inside of the trigger cavity 1 63, and then presses the trigger switch 2 72. The trigger switch 2 72 receives a signal after being pressed. After the signal is transmitted to the controller, the controller controls the power-on state of the electromagnet 1 47, the electromagnet 2 48 and the electromagnet 3 49. The design of multiple groups of trigger switches 2 72 corresponds to the power-on state of the electromagnet 1 47, the electromagnet 2 48 and the electromagnet 3 49, so as to realize random control of the position of the slider 43, thereby realizing random control of the bending degree of the simulated blood vessel 41. The trigger ball 74 continues to move downward and falls into the inside of the ball outlet seat 73.

[0041] 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.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Medical simulation puncture needle training device, including: A simulated arm (11), wherein an end surface of the simulated arm (11) is provided with a simulated puncture piece (12), a simulation piece (13) is fixed inside the simulated puncture piece (12), and a simulation cavity (14) is provided inside the simulation piece (13); It is characterized by: also including: A simulated skin simulation component (2) and a driving component (3), wherein the simulated skin simulation component (2) is arranged inside a simulation cavity (14), and the driving component (3) is arranged on the side of the simulated skin simulation component (2), wherein the simulated skin simulation component (2) comprises a skin layer 1 (21) arranged inside the simulation cavity (14), and a skin layer 2 (22) is arranged at the bottom of the skin layer 1 (21), and the tension between the skin layer 1 (21) and the skin layer 2 (22) is adjusted by the operation of the driving component (3) to simulate various skin conditions of a patient; A blood vessel simulation component (4) and a control component (5), wherein the blood vessel simulation component (4) is arranged at the bottom of the simulated skin simulation component (2), the blood vessel simulation component (4) comprises a simulated blood vessel (41) arranged at the bottom of the second skin layer (22), and the control component (5) is connected to the driving component (3), and the degree of curvature of the simulated blood vessel (41) is controlled by the control component (5) to simulate various vascular tortuosity states of a patient; A disordered component (6), wherein the disordered component (6) is arranged on the end surface of the simulated puncture piece (12), and the skin state and the blood vessel tortuosity state are randomly and disorderly controlled by the disordered component (6).

2. The medical simulation puncture needle training device according to claim 1, characterized in that: Both sides of the skin layer 1 (21) are connected to the connecting belt (24), one end of the connecting belt (24) away from the skin layer 1 (21) is connected to the skin layer 2 (22), and the top of the connecting belt (24) is pressed against a guide rod (23).

3. The medical simulation puncture needle training device according to claim 2, characterized in that: A toothed bar (25) is fixed to the inner wall of the connecting belt (24), and a gear one (26) is provided on the inner wall of the toothed bar (25); the gear one (26) is fixed to the outer wall of the rotating rod one (27); and support rings (28) are fixed to both ends of the outer wall of the rotating rod one (27).

4. The medical simulation puncture needle training device according to claim 3, characterized in that: The driving assembly (3) comprises a motor (31) fixed to the end surface of one of the rotating rods (27), and a gear (32) is fixed to the other end of the rotating rod (27), a gear (33) is meshed with the side of the gear (32), a rotating rod (34) is fixed to the center of the gear (33), and the end surface of the rotating rod (34) is rotatably connected to the inner wall of the simulation cavity (14), a belt (35) is sleeved on the surface of the rotating rod (34), and the other end of the belt (35) is sleeved on the outer wall of the rotating rod (27).

5. The medical simulation puncture needle training device according to claim 1, characterized in that: The simulated blood vessel (41) is arranged on the surface of the connection seat (44), and a pressing piece (42) is pressed against the surface of the simulated blood vessel (41), and the pressing pieces (42) are pressed against the surface of the simulated blood vessel (41) in an alternating manner.

6. The medical simulation puncture needle training device according to claim 5, characterized in that: A slider (43) is fixed to the bottom of the pressing member (42), and the slider (43) is slidably connected to the inside of a sliding cavity (45). The sliding cavity (45) is opened inside a connecting seat (44). A metal sheet (46) is fixed to the surface of the slider (43). An electromagnet 1 (47), an electromagnet 2 (48) and an electromagnet 3 (49) are fixed to the inner wall of the sliding cavity (45) in sequence.

7. The medical simulation puncture needle training device according to claim 4, characterized in that: The control assembly (5) comprises a rotating rod three (51) arranged inside the gear two (32), and a pressure block (52) is fixed to the outer wall of the rotating rod three (51), a switch seat (53) is fixed to the inner wall of the gear two (32), and a pressure switch one (54), a pressure switch two (55) and a pressure switch three (56) are distributed in sequence on the inner wall of the switch seat (53).

8. The medical simulation puncture needle training device according to claim 7, characterized in that: The surface of the pressing block (52) is arranged in an arc shape, and the surfaces of the pressing switch 1 (54), the pressing switch 2 (55) and the pressing switch 3 (56) are arranged in an arc shape.

9. The medical simulation puncture needle training device according to claim 1, characterized in that: The disordered component (6) comprises a protection box (61) fixed to the end surface of the simulated puncture member (12), and the outer circle of the inner wall of the protection box (61) is rotatably connected to a rotating seat (62), and the rotating seat (62) is evenly provided with a trigger cavity (63), the inner circle of the inner wall of the protection box (61) is rotatably connected to a rotating seat (64), and a trigger cavity (65) is provided inside the rotating seat (64), a connecting tube (66) is fixed at the center of the inner wall of the protection box (61), and a ball opening (69) is provided at the bottom of the connecting tube (66), a trigger switch (71) is fixed to the inner wall of the trigger cavity (65), and a trigger switch (72) is fixed to the inner wall of the trigger cavity (63).

10. The medical simulation puncture needle training device according to claim 9, characterized in that: A delivery tube (67) is fixed to the inner wall of the connecting tube (66), and a delivery port (68) is provided at the bottom of the delivery tube (67); a ball outlet seat (73) is fixed to the bottom of the protection box (61), and a trigger ball (74) is arranged inside the ball outlet seat (73); a rotating disk (75) is fixed to the surface of the rotating seat (62), and a rotating ring (76) is fixed to the surface of the rotating disk (75); a rotating disk (77) is fixed to the surface of the rotating seat (64), and a rotating ring (78) is fixed to the surface of the rotating disk (77).

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