Intrahepatic bile duct puncture practice model

Abstract

The utility model discloses an intrahepatic bile duct puncture practice model which comprises a base body used for simulating a liver structure, a plurality of network pipelines used for simulating a bile duct network structure are arranged in the base body, a plurality of expansion balloons located at different positions are arranged in the network pipelines, and the expansion balloons are used for simulating biliary obstruction. Each dilation balloon is further connected with a first dilation catheter, the other end of each first dilation catheter penetrates out of the base body, and the first dilation catheters are used for providing dilation media for the dilation balloons. According to the intrahepatic bile duct puncture practice model provided by the technical scheme of the utility model, biliary obstruction at different degrees and positions can be simulated according to training requirements, so that the applicability and the flexibility of the model are greatly improved. By means of the design, medical practicers and doctors can operate and practice according to more diversified actual conditions, so that the ability of adapting to different complex conditions is improved, and the surgical skills and operation precision of the medical practicers and the doctors can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical models, in particular to an intrahepatic bile duct puncture training model. Background Art

[0002] In modern medical education and technical training, highly realistic practice models play a vital role, especially in the learning process of interventional surgical techniques. Biliary system diseases, including biliary obstruction, are common medical problems, and their diagnosis and treatment usually require highly sophisticated operational skills. Traditional teaching methods rely on written textbooks, video demonstrations, and limited practice opportunities, which often fail to provide sufficient operational experience and intuitive feelings. Therefore, training models that simulate actual operating environments have become an important tool for training efficient skills.

[0003] Biliary duct puncture is a common interventional diagnostic and therapeutic method used for the examination and treatment of diseases such as biliary obstruction. However, since the bile duct is located deep in the liver and is closely connected to other important organs and blood vessels, it requires doctors to have extremely high precision operation skills. In this context, the development of a highly simulated intrahepatic bile duct puncture practice model is particularly important. It can provide doctors with a risk-free practice environment to familiarize themselves with the operation of surgical tools, master puncture techniques, and understand the structural characteristics of the bile duct network.

[0004] However, in traditional bile duct puncture models, bile duct obstruction is usually simulated by a prosthesis of fixed size and position. This means that once the model is made, the specific circumstances of the obstruction (including its size and location) cannot be adjusted according to the needs of training. This fixed design limits the flexibility and practicality of the model, because in actual clinical settings, the circumstances of bile duct obstruction are diverse, and their size and location can be different, which requires doctors to be able to adapt to a variety of different situations. In general, existing bile duct puncture models cannot perfectly simulate the conditions of various diseases, and can only provide a fixed simulation environment, resulting in unclear training effects. Utility Model Content

[0005] The utility model aims to provide an intrahepatic bile duct puncture training model which can simulate a variety of different obstruction situations to improve the operational flexibility and adaptability.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an intrahepatic bile duct puncture training model, which includes a matrix for simulating liver structure, a plurality of network pipes for simulating bile duct network structure are arranged in the matrix, a plurality of expansion balloons located at different positions are arranged in the network pipes, the expansion balloons are used to simulate bile duct obstruction, each of the expansion balloons is also connected to a first expansion catheter, the other end of the first expansion catheter passes through the matrix, and the first expansion catheter is used to provide expansion medium for the expansion balloon.

[0007] Preferably, it further comprises a plurality of infusion catheters, one end of each of which penetrates into different positions of the network pipeline respectively, and the other end of each of which penetrates out of the matrix, and the infusion catheters are used to provide liquid simulating bile to the network pipeline.

[0008] Preferably, it further comprises a first balloon body simulating the structure of the chest and abdominal wall of a human body, the base body is located in the first balloon body, and the first dilation catheter and the infusion catheter pass through the first balloon body.

[0009] Preferably, the first capsule is further provided with a second capsule located above the base, the second capsule is used to simulate the human chest cavity, and the second capsule can provide a squeezing force for the base.

[0010] Preferably, it further comprises a second dilatation catheter, one end of which is connected to the second balloon, and the other end of which passes through the first balloon.

[0011] Preferably, the second dilatation catheter controls the expansion degree of the second balloon through gas, and the second balloon is also provided with an air pressure sensor for detecting air pressure.

[0012] Preferably, a plurality of signal detectors are also provided in the base body, and the signal detectors are used to detect the signal emitted by the signal transmitter configured on the puncture needle.

[0013] Preferably, the signal detector comprises a magnetic field sensor or an ultrasonic receiver.

[0014] Compared with the prior art, the intrahepatic bile duct puncture training model provided by the above technical solution of the utility model can simulate bile duct obstruction of different degrees and positions according to training needs through the built-in expandable balloon and the first expansion catheter, thereby greatly improving the applicability and flexibility of the model. This design not only enables medical practitioners and doctors to practice operations in more diverse actual situations, thereby improving their ability to adapt to different complex situations, but also enhances their surgical skills and operating accuracy. In addition, the high simulation of the model helps to improve the operator's understanding and mastery of the surgical process, thereby improving the success rate of the operation and patient safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a planar structural diagram of an intrahepatic bile duct puncture training model in one embodiment of the present invention.

[0016] Figure 2 This is a planar structural diagram of an intrahepatic bile duct puncture training model in another embodiment of the utility model.

[0017] Figure 3 This is a planar structural diagram of an intrahepatic bile duct puncture training model in yet another embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.

[0019] This embodiment discloses a model for practicing intrahepatic bile duct puncture, which is used by medical practitioners to practice bile duct puncture techniques. Figure 1 The model includes a matrix P1 for simulating the liver structure, a plurality of network pipes 1 for simulating the bile duct network structure are arranged in the matrix P1, a plurality of expansion balloons 2 located at different positions are arranged in the network pipes 1, the expansion balloons 2 are used to simulate bile duct obstruction, each expansion balloon 2 is also connected to a first expansion catheter D1, the other end of the first expansion catheter D1 passes through the matrix P1, and the first expansion catheter D1 is used to provide expansion medium for the expansion balloon 2, and the expansion medium can be gas or liquid.

[0020] When practicing bile duct puncture based on the model provided in this embodiment, first, the instructor can adjust the expansion degree of each expansion balloon 2 through each first expansion catheter D1 to arrange a specific bile duct obstruction situation in the grid pipeline. Then, the practitioner performs puncture practice on the base body P1 through the puncture needle. As the practitioner's practice proficiency varies, the instructor can adjust the simulated bile duct obstruction situation in the network pipeline 1 at any time, thereby creating a simulation environment corresponding to different conditions.

[0021] It can be seen that the model can simulate different degrees and locations of biliary obstruction according to training needs through the built-in expandable balloon 2 and the first dilatation catheter D1, thereby greatly improving the applicability and flexibility of the model. This design not only enables medical practitioners and doctors to practice operations in more diverse actual situations, thereby improving their ability to adapt to different complex situations, but also enhances their surgical skills and operating accuracy. In addition, the high simulation of the model helps to improve the operator's understanding and mastery of the surgical process, thereby improving the success rate of the operation and patient safety.

[0022] On the other hand, Figure 1The model further includes a plurality of infusion catheters D3, one end of each of which penetrates into different positions of the network pipeline 1, and the other end of each of which penetrates out of the matrix P1. The infusion catheters D3 are used to provide liquid simulating bile to the network pipeline 1. In this embodiment, by setting up a plurality of infusion catheters D3, liquid can be injected into different positions of the network pipeline 1 during the practice training of the puncture model to simulate the accumulation of fluid in the bile duct, thereby creating a more realistic disease environment.

[0023] In another preferred embodiment of the intrahepatic bile duct puncture training model of the utility model, Figure 2 , and also includes a first sac P2 simulating the structure of the chest and abdominal wall of the human body, the base P1 is located in the first sac P2, and the first dilatation catheter D1 and the infusion catheter D3 pass through the first sac P2. In this embodiment, through the setting of the first sac P2, a more realistic medical object is created, and the practitioner can experience the process of the puncture needle penetrating from the epidermis to the liver.

[0024] On the other hand, for the human body structure, during the breathing process, the pressure in the chest cavity will change as the lungs expand and contract. The diaphragm is the main muscle that separates the chest cavity and the abdominal cavity, and its movement during the breathing process directly affects the abdominal organs, including the liver. When inhaling, the diaphragm contracts and moves downward, increasing the volume of the chest cavity, which will cause the liver to shift downward and expand its space in the abdominal cavity. When exhaling, the diaphragm relaxes and moves upward, reducing the volume of the chest cavity, and the liver moves up accordingly. As a result, changes in the air pressure in the chest cavity will affect the shape of the liver,

[0025] Therefore, in order to further improve the realism of the intrahepatic bile duct puncture training model, Figure 2 A second capsule P3 is also provided in the first capsule P2 and is located above the base P1. The second capsule P3 is used to simulate the human chest cavity, and the second capsule P3 can provide extrusion force for the base P1.

[0026] Specifically, the model in this embodiment further includes a second dilatation catheter D2, one end of the second dilatation catheter D2 is connected to the second balloon P3, and the other end of the second dilatation catheter D2 passes through the first balloon P2.

[0027] During the bile duct puncture practice using the model in this embodiment, the second balloon P3 can be gas supplied or exhausted based on the second dilatation catheter D2 to simulate the respiratory movement of the human body, thereby causing the morphology of the base P1 to change dynamically, thereby simulating the patient's real condition to the greatest extent possible, so as to further improve the trainee's operational skills.

[0028] It should be noted that the base body P1, the first capsule body P2 and the second capsule body P3 in the above embodiment are preferably made of silicone material. Silicone has good biocompatibility, plasticity and suitable elastic modulus, and can better simulate the texture and elasticity of human liver. In addition, silicone is highly customizable and can simulate tissues of different hardness by adjusting the formula to meet different training needs.

[0029] In addition, since the network pipeline 1 simulates the bile duct network structure, this requires that the selected material not only has a certain elasticity to simulate the flexibility of the bile duct, but also needs to have sufficient strength and puncture resistance to withstand repeated puncture operations. Thermoplastic elastomers (TPE) or thermoplastic polyurethanes (TPU) are preferred materials, which combine the elasticity of rubber and the processing convenience of plastics, and can provide sufficient durability and operational feedback while simulating the bile duct. These materials can also adjust their physical and chemical properties by adding different additives to meet specific simulation requirements.

[0030] like Figure 2 The second expansion catheter D2 controls the expansion degree of the second bladder P3 through gas, and a pressure sensor 3 for detecting air pressure is also provided in the second bladder P3. When in use, the second expansion catheter D2 can be connected to a bidirectional air pump, and the state of the bidirectional air pump can be controlled by a controller. The controller is electrically connected to the pressure sensor 3 to adjust the state of the bidirectional air pump in real time according to the feedback of the pressure sensor 3.

[0031] like Figure 3 The substrate P1 is also provided with a plurality of signal detectors 4, which are used to detect the signal emitted by the signal transmitter configured on the puncture needle. Specifically, the signal detector 4 includes a magnetic field sensor or an ultrasonic receiver.

[0032] For example, a micro magnetic sensor is installed on the puncture needle, and multiple magnetic field sensors are arranged in the matrix P1. When the puncture needle moves in the model, these magnetic field sensors can detect the change of the magnetic field, thereby accurately calculating the position of the needle tip.

[0033] For another example, an ultrasonic transmitter is installed on the puncture needle, and an ultrasonic receiver is set on the base P1. By measuring the propagation time and intensity of the ultrasonic signal, the position of the needle tip can be inferred.

[0034] On the other hand, micro pressure sensors can be installed on the puncture needle or at key positions of the model. These pressure sensors can detect the pressure exerted by the needle tip on the surrounding tissue and the pressure changes during the puncture process in real time.

[0035] In summary, the utility model discloses an intrahepatic bile duct puncture practice model, which can realistically simulate the real situation of the human body, that is, simulate different bile duct obstructions corresponding to different conditions, simulate the impact of respiratory movement on the liver during puncture, and simulate bile duct obstruction effusion, so as to help practitioners quickly master bile duct puncture technology. In addition, through the setting of the signal detector 4, the landing point of the puncture needle can also be monitored to help users analyze the puncture practice situation, thereby helping users to formulate subsequent practice plans in a targeted manner.

[0036] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A model for practicing intrahepatic bile duct puncture, characterized in that: It includes a matrix for simulating liver structure, wherein a plurality of network pipes for simulating bile duct network structure are arranged in the matrix, wherein a plurality of expansion balloons located at different positions are arranged in the network pipes, wherein the expansion balloons are used to simulate bile duct obstruction, and each of the expansion balloons is also connected to a first expansion catheter, wherein the other end of the first expansion catheter passes through the matrix, and the first expansion catheter is used to provide expansion medium for the expansion balloon.

2. The intrahepatic bile duct puncture training model according to claim 1, characterized in that: It also includes a plurality of infusion catheters, one end of each of which penetrates into different positions of the network pipeline, and the other end of each of which penetrates out of the matrix, and the infusion catheters are used to provide liquid simulating bile to the network pipeline.

3. The intrahepatic bile duct puncture training model according to claim 2, characterized in that: It also includes a first balloon body that simulates the structure of the chest and abdominal wall of the human body. The base body is located in the first balloon body, and the first dilation catheter and the infusion catheter pass through the first balloon body.

4. The intrahepatic bile duct puncture training model according to claim 3, characterized in that: The first capsule is further provided with a second capsule located above the base, the second capsule is used to simulate the human chest cavity, and the second capsule can provide a squeezing force for the base.

5. The intrahepatic bile duct puncture training model according to claim 4, characterized in that: It also includes a second dilatation catheter, one end of which is connected to the second balloon, and the other end of which passes through the first balloon.

6. The intrahepatic bile duct puncture training model according to claim 5, characterized in that: The second expansion catheter controls the expansion degree of the second balloon through gas, and a pressure sensor for detecting air pressure is also arranged inside the second balloon.

7. The intrahepatic bile duct puncture training model according to claim 1, characterized in that: A plurality of signal detectors are also arranged in the base body, and the signal detectors are used to detect the signal emitted by the signal transmitter arranged on the puncture needle.

8. The intrahepatic bile duct puncture training model according to claim 7, characterized in that: The signal detector includes a magnetic field sensor or an ultrasonic receiver.

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