A teaching device for simulating infusion port maintenance

Abstract

The present invention discloses a teaching device for simulating infusion port maintenance, comprising: an infusion port assembly is placed in a wearable training garment, and a puncture needle can puncture the infusion port assembly through the operating port of the wearable training garment. The puncture site skin module movably covers the operating port and can be placed or removed according to the purpose of the teaching device. The sensor module can collect various parameters in the infusion port assembly and generate corresponding sensor signals. The main control module is connected to the sensor module signal, receives the corresponding signal from the sensor module, and uses it to determine whether the puncture needle is inserted normally, whether the liquid level is abnormal, and whether the air pressure is abnormal. The present invention provides a highly simulated infusion port maintenance training experience, which is more lightweight and convenient. A sensor module and visualization are provided in the infusion port assembly, which can collect various parameters in the infusion port assembly and intuitively observe the internal cleaning status, which helps to improve the accuracy of operator training.

Description

Technical Field

[0001] The invention belongs to the technical field of medical teaching aids, and in particular relates to a teaching device for simulating maintenance of an infusion port. Background Art

[0002] An implantable venous access port (PORT) is a closed infusion device that is completely implanted in the human body. It is mainly used to provide venous vascular access for patients who require long-term or frequent infusion treatment. It is suitable for the infusion of high-concentration chemotherapy drugs, total parenteral nutrition, and blood products. When using the port, the following situations may easily occur due to improper operation: during the insertion of the needle, the needle may be tilted or swung, causing the needle tip to pierce the side wall of the port, causing damage to the port; when using the port, it is sometimes necessary to flush the tube, and the flushing pressure needs to be adjusted during flushing. However, when the flushing pressure is too high, a large amount of saline may flow into the blood vessels, causing subcutaneous swelling.

[0003] Therefore, before the infusion port is used, medical staff need to be trained through a simulated infusion port. However, most existing simulated infusion ports use an infusion port set in a human model. The existing training device cannot change the body position, the puncture breakthrough feeling is not realistic, and it cannot reflect the different operation requirements brought about by the various thicknesses of subcutaneous fat of real clinical patients, which is quite different from the actual clinical operation feeling. At the same time, in terms of teaching, the existing model cannot intuitively show the direction of water flow when flushing the infusion port pipeline. Therefore, the present invention proposes a teaching device for simulated infusion port maintenance. Summary of the invention

[0004] The technical purpose of the present invention is to provide a teaching device for simulating infusion port maintenance to solve the problems mentioned in the background technology.

[0005] To solve the above problems, the technical solution of the present invention is: A teaching device for simulating infusion port maintenance, comprising: Wearable training suit, infusion port assembly, puncture site skin module, sensor module and main control module; The wearable training garment has an accommodation space inside, in which an infusion port assembly is placed, and the wearable training garment has an operation port for use with a puncture needle, the operation port matches the placement position of the infusion port assembly, and is configured to puncture the infusion port assembly through the operation port to realize simulated maintenance of the infusion port; The puncture site skin module is movably covered above the operation port. When the teaching device is used for training, the puncture site skin module is removed and configured to expose the operation port to perform barrier-free puncture teaching and visualize the puncture process. When the teaching device is used for examination, the puncture site skin module is placed and configured to simulate the skin during real puncture to achieve simulated puncture. The sensor module is arranged in the infusion port assembly and is configured to collect various parameters in the infusion port assembly and generate corresponding sensor signals, the sensor signals including: a puncture depth signal reflecting the position of the puncture needle, a liquid level signal reflecting the height of the liquid level in the infusion port, and an air pressure signal reflecting the air pressure in the infusion port; The main control module is connected to the sensor module signal and is configured to receive corresponding signals from the sensor module, determine whether the puncture needle is inserted normally according to the puncture depth signal, determine whether the liquid level in the infusion port is abnormal according to the liquid level signal, and determine whether the air pressure in the infusion port is abnormal according to the air pressure signal.

[0006] Specifically, the wearable training garment includes an artificial skin layer and a base layer; The artificial skin layer is connected to the base layer surface-to-surface, and an accommodation space is provided between the two. The artificial skin layer is provided with a through hole as an operation port. The side of the base layer not connected to the artificial skin layer is a wearing surface, which is configured to fit the wearer; Among them, the artificial skin layer is made of soft silicone material.

[0007] Specifically, the infusion port assembly includes an infusion port base and an infusion port; The infusion port base is located in a groove formed in the base layer below the operation port, and the opening of the groove faces the operation port; The infusion port is embedded in the infusion port base, and a pipeline connection port is provided at the lateral bottom of the infusion port; a first conduction hole is provided at the side of the infusion port base, and the first conduction hole is arranged corresponding to the pipeline connection port; wherein the infusion port is made of light-transmitting material.

[0008] Further preferably, a catheter assembly and a liquid storage bag used in conjunction with the infusion port assembly are also provided; The two ends of the catheter assembly are connected to the pipeline connection port and the liquid storage bag respectively. The liquid storage bag is arranged outside the wearable training suit and stores simulated blood inside. The liquid storage bag is configured to simulate blood withdrawal during the simulated maintenance of the infusion port and store or temporarily place the flushing liquid injected into the infusion port. The base layer is provided with a through hole as the second conducting hole, and the catheter assembly passes through the pipeline connection port, the first conducting hole and the second conducting hole in sequence to achieve liquid connection between the infusion port and the liquid storage bag.

[0009] Among them, a sealing piece is provided on the top of the infusion port, and the sealing piece is configured to isolate the infusion port from the accommodating space to prevent liquid leakage; a preset port is provided on the surface of the sealing piece for use with a puncture needle; the preset port includes a protective layer and a puncture part located in the center of the protective layer, and the puncture part cooperates with the puncture needle to achieve puncture; the protective layer is made of resin material, and the puncture part is made of TPE material.

[0010] Specifically, the sensing module includes a piezoelectric sensor arranged on the inner bottom surface of the infusion port. The piezoelectric sensor is configured to sense that the puncture needle is against the inner bottom surface of the infusion port, generate a corresponding puncture depth signal and send it to the main control module. The main control module determines and prompts that the puncture needle has reached the bottom of the infusion port, and stores relevant information about the puncture needle touching the bottom.

[0011] Among them, the sensing module includes an air pressure sensor arranged on the inner wall surface of the infusion port. The air pressure sensor is configured to monitor the air pressure in the space of the infusion port and generate a corresponding air pressure signal to send to the main control module. The main control module determines and prompts whether the inside of the infusion port is under positive pressure, and stores relevant information about the air pressure inside the infusion port.

[0012] Specifically, the sensing module includes a pair of conductive electrodes arranged in parallel inside the infusion port. The conductive electrodes are configured to monitor the liquid level in the infusion port. If the liquid level overflows the conductive electrodes, a corresponding liquid level signal is generated and sent to the main control module. The main control module determines and prompts whether the liquid level in the infusion port is normal, and stores relevant information about the liquid level inside the infusion port.

[0013] Among them, the puncture site skin module is a replaceable component. Puncture site skin modules of different thicknesses and sizes are selected to simulate the maintenance of the infusion port installed under different subcutaneous fat thicknesses in different fat and thin people.

[0014] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art: The present invention provides a highly simulated infusion port maintenance training experience by simulating real infusion port components. Compared with the prior art that uses wearable training clothes instead of human models, it is more lightweight and convenient and can be used on any patient or model. The looseness and size can be adjusted as needed to meet the needs of various human body shapes. After being worn and fitted, it fits the human body, making the operation feel more realistic, and the patient can change the body position at will to simulate the real scene.

[0015] The present invention provides a sensor module in the infusion port assembly, which can collect various parameters in the infusion port assembly, such as puncture position, air pressure, liquid level, etc. The monitoring and feedback of these parameters help to improve the accuracy of operator training.

[0016] The puncture site skin module covers the top of the operation port flexibly. This is a replaceable part that can be replaced according to the implementation requirements. When performing training, the puncture site skin module is removed; when performing an exam, the puncture site skin module is covered over the operation port. After removal, the operation port is exposed, and the infusion port assembly inside the operation port can be directly seen from the outside to perform barrier-free puncture teaching, and then understand the correlation between the direction of the needle tip bevel, puncture depth, flushing intensity and other factors inside the infusion port and the cleaning effect of the infusion port. After covering, that is, after the puncture site skin module is placed, at this time, the operator cannot see the infusion port assembly inside the operation port from the outside, and because the puncture site skin module is also a simulated skin, the actual infusion port cleaning process is restored to the greatest extent possible, that is, positioning, puncture and flushing, thereby simulating real puncture to achieve simulated puncture. In addition, the puncture site skin module can be selected in different thicknesses and sizes to simulate the maintenance of the infusion port under different subcutaneous fat thicknesses of different fat and thin people.

[0017] The sealing design on the top of the infusion port effectively isolates the infusion port from the accommodating space, preventing liquid leakage and intrusion, and ensuring the liquid isolation performance of the entire device.

[0018] The preset port includes a protective layer and a puncture part. The protective layer is made of resin material, and the puncture part is made of TPE material, providing a good puncture experience and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0020] Figure 1 It is a structural schematic diagram of a teaching device for simulating infusion port maintenance of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the puncture needle and the teaching device of the present invention; Figure 3 It is a schematic diagram of the surface structure of the puncture needle and the teaching device of the present invention during puncture; Figure 4 It is a side cross-sectional view of the integration of the puncture needle and the teaching device of the present invention; Figure 5 It is a structural schematic diagram of an implantable infusion port detection device in the prior art.

[0021] Description of reference numerals: 1: Wearable training suit; 2: Infusion port assembly; 21: Infusion port; 22: Infusion port base; 23: Catheter assembly; 3: Puncture site skin module; 4: Puncture needle; 5: Sealing piece. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0023] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0024] The following is a further detailed description of a teaching device for simulating infusion port maintenance proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims.

[0025] Once an infusion port is implanted under the skin, it may be difficult to find the infusion port, especially the infusion port puncture membrane. Therefore, it is necessary to facilitate the finding of such medical devices (such as infusion ports) and their puncture membranes after they are implanted. To this end, many medical companies have proposed various implantable infusion port detection systems, catheter assemblies including implantable infusion ports, implantable infusion ports, and implantable infusion port detection devices.

[0026] by Figure 5As an example of the prior art, an implantable port detection system 100 is provided for finding an implantable port 310 implanted in a patient P. The implantable port detection system 100 includes an implantable port detection device ("IPDD") 500 and a catheter assembly 300 including an implantable port 310. The IPDD 500 includes a light source configured to emit light having one or more wavelengths in a near infrared ("NIR") wavelength range as incident light hvi, the incident light hvi being used to be absorbed by a contrast agent incorporated in one or more portions of the implantable port 310. The incident light has one or more wavelengths located at or near a peak absorption of the contrast agent. The IPDD 500 also includes a light detector configured to detect light having one or more wavelengths of the same or different wavelengths in the NIR wavelength range, the light including fluorescence hvi emitted by the contrast agent after the incident light is absorbed by the contrast agent. The IPDD 500 also includes a display configured to display the presence of the implantable port when the light detector detects fluorescence from the contrast agent. The above is only one application scenario of implantable infusion port and the corresponding detection system. As the application of implantable infusion port becomes more and more extensive, the corresponding teaching becomes particularly important. On this basis, we developed a teaching device for simulating infusion port maintenance.

[0027] Example See also Figures 1 to 4 This embodiment provides a teaching device for simulating infusion port maintenance, which includes: a wearable training garment 1, an infusion port assembly 2, a puncture site skin module 3, a sensor module and a main control module.

[0028] Specifically, see Figure 1 In this embodiment, the wearable training garment 1 is composed of an artificial skin layer and a base layer, and the two are connected by stitching or bonding. The artificial skin layer is made of a highly simulated material, such as a highly simulated silicone material, to simulate the appearance and touch of real skin. The base layer is made of a tougher material, such as polyester or nylon, to provide sufficient support and durability. The side of the base layer that is not connected to the artificial skin layer is the wearing surface, which is used for fitting and ensuring that the wearer always feels comfortable during operation. The four sides of the artificial skin layer are connected to the four sides of the base layer to ensure that the two are tightly combined, and an accommodation space is left between the two for placing the above-mentioned infusion port assembly 2. A through hole is opened on the artificial skin layer as an operation port. The position of the operation port matches the placement position of the infusion port assembly 2 to ensure that the puncture needle 4 penetrates the operation port and accurately reaches the infusion port assembly 2, so as to realize the simulated maintenance of the infusion port. Of course, the position of the operation port can be adjusted according to the actual layout of the infusion port, such as Figure 1The operation port corresponding to the chest infusion port 21 is shown. The wearable training garment 1 adopts a wearable design, and the looseness and size can be adjusted as needed. It can be used on any patient or model to meet the needs of various human body shapes. After being worn and fitted, it fits the human body, making the operation feel more realistic. In addition, the patient can change the body position at will during the implementation process, simulating the infusion port cleaning of the patient in different body positions in the real scene. This solves the problem that the existing infusion port training models are based on a half-body simulator, with a fixed module on the chest for operation, and the model body position is fixed, which cannot simulate the various body positions of the patient during the real clinical operation.

[0029] Next, see Figure 1 and Figure 2 It can be seen that the infusion port assembly 2 includes an infusion port base 22 and an infusion port 21 (i.e., the body), and the infusion port base 22 is arranged in a groove provided in the base layer below the operation port, and the opening of the groove faces the operation port. The infusion port is embedded in the infusion port base 22, and the top of the infusion port can be nested in the operation port, and a pipeline connection port is provided at the bottom of the side of the infusion port. The infusion port uses a 3D printed infusion port model that is consistent in size and material with the clinical infusion port, preferably a transparent plastic material for easy observation. That is, the operator can directly and clearly see the direction of the needle tip bevel after the puncture needle 4 enters the infusion port through the operation port, and at the same time, the puncture needle 4 is used to inject liquid into the infusion port, and the water flow flushing direction in the port body can be intuitively seen, and the different directions of the needle tip bevels can be further understood. The effect on the flushing effect of the liquid in the infusion port port body. Similarly, factors such as puncture depth and flushing intensity can also be observed. Correspondingly, a first conducting hole is provided on the side of the infusion port base 22, and the first conducting hole is arranged corresponding to the pipeline connection port. Preferably, a catheter assembly 23 and a liquid storage bag are also provided in this embodiment. One end of the catheter assembly 23 is connected to the pipeline connection port of the infusion port through the first conducting hole, and the other end thereof is connected to the liquid storage bag through the second conducting hole. The catheter assembly 23 should have a certain flexibility to facilitate operation and simulate the process of blood flow in the real body. A medical-grade silicone tube can be used to ensure the sealing and durability of the connection. The liquid storage bag is arranged on the outside of the wearable training suit 1. The material of the liquid storage bag is transparent medical-grade plastic, and the capacity is 50ml. Before implementation, simulated blood is stored inside the liquid storage bag, which can simulate blood withdrawal, that is, when operating, the operator needs to withdraw blood in the pipeline according to the operating process to ensure the correct puncture site. After the withdrawal, the pipeline needs to be flushed, and the requirement for each pipeline flushing is 20-40 ml. At this time, the liquid storage bag can store or temporarily place the flushing liquid injected into the infusion port 21. Among them, the second conductive hole is a through hole opened in the base layer, so that the catheter assembly 23 passes through the pipeline connection port, the first conductive hole and the second conductive hole in sequence, and realizes the liquid path connection between the infusion port 21 and the liquid storage bag.

[0030] It is worth mentioning that see Figure 2 and Figure 3 In this embodiment, a sealing member 5 is provided on the top of the infusion port 21, and the sealing member 5 on the top is designed to be detachable for easy cleaning and maintenance. The surface of the sealing member 5 is provided with a preset port for use with the puncture needle 4. The purpose of setting the sealing member 5 is to isolate the infusion port 21 from the accommodating space to prevent liquid leakage. The preset port includes a protective layer and a puncture portion located at the center of the protective layer. The puncture portion cooperates with the puncture needle 4 to achieve puncture. The protective layer is made of resin material, and the puncture portion is made of transparent TPE material, providing a good puncture experience and durability.

[0031] See also Figure 2 and Figure 3 In this embodiment, the puncture site skin module 3 is movably covered above the operation port to simulate the skin during real puncture. It is worth mentioning that the puncture site skin module 3 is a replaceable part and is replaced according to the implementation requirements. When using this embodiment to perform puncture maintenance training, the puncture site skin module 3 can be removed to expose the operation port, and the internal structure of the infusion port 21 can be directly viewed from the outside, so as to perform barrier-free puncture training, which plays a role in teaching or training, specifically including: by adjusting the direction of the needle tip bevel, puncture depth, flushing strength and other factors during flushing, the change of flushing effect can be intuitively understood, so that the operator can more comprehensively and intuitively understand that when the needle tip bevel is opposite to the pipeline, the flushing water flow direction will be more comprehensive, and the residual liquid in the infusion port 21 will be flushed clean. When using this embodiment to perform an exam or simulated training, the puncture site skin module 3 can be put back on the operation port. At this time, the operator cannot see the infusion port assembly 2 inside the operation port from the outside. In addition, since the puncture site skin module 3 is also a simulated skin, the cleaning process of the actual infusion port is restored to the greatest extent possible, that is, positioning, puncturing and flushing. The puncture site skin module 3 is a replaceable component, and puncture site skin modules 3 of different thicknesses and sizes can be selected to simulate the simulated maintenance of the infusion port under different subcutaneous fat thicknesses of different fat and thin people. Since most patients who use the infusion port are patients who need infusion for a long time or tumor patients, their bodies will have thick subcutaneous fat in the early stage, but will lose weight in the later stage. Therefore, the replacement of the puncture site skin module 3 can simulate the full cycle of infusion port patients. The material of the puncture site skin module 3 is consistent with the artificial skin layer.

[0032] Preferably, in this embodiment, a sensor module is provided in the infusion port assembly 2, and the sensor module is connected to the main control module by signal. Specifically, it includes a piezoelectric sensor, an air pressure sensor and a conductive electrode. The piezoelectric sensor is arranged on the inner bottom surface of the infusion port 21. The piezoelectric sensor is used to sense whether the puncture needle 4 is against the inner bottom surface of the infusion port 21, and generates a corresponding puncture depth signal to send to the main control module. The main control module determines and prompts that the puncture needle 4 has reached the bottom of the infusion port 21. The main control module also stores relevant information about the puncture needle 4 touching the bottom, such as the time of touching the bottom and the pressure value at the bottom of the infusion port 21. The air pressure sensor is arranged on the inner wall surface of the infusion port 21. The air pressure sensor is used to monitor the air pressure in the space of the infusion port 21, and generates a corresponding air pressure signal to send to the main control module. The main control module determines and prompts whether the infusion port 21 is positive pressure. Similarly, the main control module stores relevant information about the internal air pressure of the infusion port 21, such as the air pressure value or the time when the air pressure becomes negative pressure. A pair of conductive electrodes are arranged in parallel inside the infusion port 21. The conductive electrodes are used to monitor the liquid level height in the infusion port 21. If the liquid level overflows the conductive electrodes, a corresponding liquid level signal is generated and sent to the main control module. The main control module determines and prompts whether the liquid level in the infusion port 21 is normal. The main control module will store relevant information about the liquid level inside the infusion port 21, such as the time point when the liquid level becomes abnormal and the length of time the liquid level is in an abnormal state.

[0033] The actual use process (specifically the simulation process) of this embodiment is now described: First, the integrity of this embodiment is confirmed, such as whether simulated blood is stored in the liquid storage bag and whether it is tightly connected. Then wear the wearable training garment 1 on the simulated object. According to needs, replace the puncture site skin modules 3 of different thicknesses and sizes to simulate the physical conditions of different patients. Next, disinfect the surface of the wearable training garment 1 where the infusion port 21 is implanted, and then take out the prepared puncture needle 4. Since the sealing member 5 of the infusion port 21 is located in the operation port, it is necessary to press downward, and feedback is obtained to obtain a pressing touch different from other parts, so as to find the position of the infusion port 21, that is, the operation port position. Then confirm the edge of the top (i.e., the injection seat) of the infusion port 21, fix the injection seat, and tighten the puncture site skin module 3 located above the infusion port 21 to facilitate the puncture. Then, puncture needle 4 is aligned with the center of infusion port 21 (i.e., puncture part) and vertically inserted to reach the bottom of infusion port 21. During the puncture process, the outlet on puncture needle 4 faces away from the pipeline connection port of infusion port 21. As puncture needle 4 continuously descends and hits the piezoelectric sensor, the piezoelectric sensor will generate a puncture depth signal and send it to the main control module. After the main control module receives the puncture depth signal, it will trigger and give a corresponding prompt. If it is in the simulation training stage, the operator can be prompted by the associated light that the puncture needle 4 has touched the bottom. If it is in the assessment stage, the main control module can upload relevant information to the proctoring system as an operation assessment point to facilitate subsequent assessment and scoring. When puncture needle 4 touches the bottom, blood is drawn back to ensure that the needle position is correct. Since the present embodiment is provided with a liquid storage bag, under normal operation, the liquid in the liquid storage bag is first drawn back into the syringe connected to the puncture needle 4. Then enter the flushing step, and push the syringe piston rhythmically by pushing hard-pushing-pushing-pushing-pushing, so that the saline generates propulsive turbulence, flushing the inner wall of the infusion port 21 and the catheter assembly 23. After the flushing is completed, 3-5ml of 100u / ml heparin sodium solution is injected to seal the tube. During the flushing process, the conductive electrode plays the role of liquid level monitoring. Since physiological saline is continuously flushed into the infusion port 21 during this process, when the pressure of the physiological saline is too high, it indicates that a large amount of liquid has poured into the infusion port 21. At this time, the physiological saline will submerge the conductive electrode, so that the two ends of the conductive electrode are connected, and the corresponding liquid level signal is generated and sent to the main control module. The main control module receives the liquid level signal, which triggers the prompt of abnormal liquid level in the infusion port 21. Similarly, depending on whether the operator is in the training stage or the assessment stage, the relevant information is prompted or uploaded and saved in different ways.After flushing, the needle removal step begins. When the last 1 ml of sealing liquid is left, use gauze to fix the infusion port 21, and push the piston of the syringe to remove the needle. During this process, the positive pressure inside the infusion port 21 needs to be maintained. Therefore, the air pressure sensor can detect the internal air pressure of the infusion port 21 to obtain an air pressure detection signal. The main control module receives the air pressure detection signal and displays it visually. The main control module will also determine whether it is abnormal based on the air pressure detection signal, and then trigger a prompt that the air pressure in the infusion port 21 is abnormal. Similarly, depending on whether the operator is in the training stage or the assessment stage, the relevant information of the air pressure will be prompted in different ways or uploaded and saved. After removal, it is necessary to check whether the needle is intact, apply pressure to stop bleeding for 5 minutes, and then disinfect the needle removal part and apply an infusion patch to cover the puncture point.

[0034] From the above description, it can be seen that this embodiment can greatly improve the authenticity and convenience of highly simulated infusion port maintenance training, and help medical staff improve their skills and accuracy in actual operations.

[0035] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A teaching device for simulating infusion port maintenance, characterized in that: include: Wearable training suit, infusion port assembly, puncture site skin module, sensor module and main control module; The wearable training garment has an accommodation space inside, the infusion port assembly is placed in the accommodation space, the wearable training garment has an operation port for use with a puncture needle, the operation port matches the placement position of the infusion port assembly, and is configured to puncture the infusion port assembly through the operation port to achieve simulated maintenance of the infusion port; The puncture site skin module is movably covered above the operation port. When the teaching device is used for training, the puncture site skin module is removed to expose the operation port to perform barrier-free puncture teaching and visualize the puncture process. When the teaching device is used for examination, the puncture site skin module is placed to simulate the skin during real puncture to achieve simulated puncture. The sensor module is disposed in the infusion port assembly and is configured to collect various parameters in the infusion port assembly and generate corresponding sensor signals, wherein the sensor signals include: a puncture depth signal reflecting the position of the puncture needle, a liquid level signal reflecting the height of the liquid level in the infusion port, and an air pressure signal reflecting the air pressure in the infusion port; The main control module is connected to the sensor module signal and is configured to receive corresponding signals from the sensor module, determine whether the puncture needle is inserted normally according to the puncture depth signal, determine whether the liquid level in the infusion port is abnormal according to the liquid level signal, and determine whether the air pressure in the infusion port is abnormal according to the air pressure signal.

2. The teaching device for simulating infusion port maintenance according to claim 1, characterized in that: The wearable training garment comprises an artificial skin layer and a base layer; The artificial skin layer is connected to the base layer surface-to-surface, and the accommodation space is provided between the two. The artificial skin layer is provided with a through hole as the operation port. The side of the base layer not connected to the artificial skin layer is a wearing side, which is configured to fit the wearer; Wherein, the artificial skin layer is made of soft silicone material.

3. The teaching device for simulating infusion port maintenance according to claim 2, characterized in that: The infusion port assembly includes an infusion port base and an infusion port; The infusion port base is located in a groove provided in the base layer below the operation port, and the opening of the groove faces the operation port; The infusion port is embedded in the infusion port base, and a pipeline connection port is provided at the lateral bottom of the infusion port; a first conducting hole is provided at the side of the infusion port base, and the first conducting hole is arranged corresponding to the pipeline connection port; wherein the infusion port adopts a light-transmitting material.

4. The teaching device for simulating infusion port maintenance according to claim 3, characterized in that: A catheter assembly and a liquid storage bag are also provided for use with the infusion port assembly; The two ends of the catheter assembly are connected to the pipeline connection port and the liquid storage bag respectively. The liquid storage bag is arranged outside the wearable training suit and stores simulated blood inside. The liquid storage bag is configured to simulate blood withdrawal during the simulated maintenance of the infusion port and store or temporarily place the flushing liquid injected into the infusion port. The base layer is provided with a through hole as a second conducting hole, and the catheter assembly is connected to the liquid path of the infusion port and the liquid storage bag by passing through the pipeline connection port, the first conducting hole and the second conducting hole in sequence.

5. The teaching device for simulating infusion port maintenance according to claim 3, characterized in that: A sealing member is provided on the top of the infusion port, and the sealing member is configured to isolate the infusion port from the accommodating space to prevent liquid leakage; a pre-set port for use with a puncture needle is provided on the surface of the sealing member; the pre-set port includes a protective layer and a puncture portion located at the center of the protective layer, and the puncture portion cooperates with the puncture needle to achieve puncture; the protective layer is made of resin material, and the puncture portion is made of TPE material.

6. The teaching device for simulating infusion port maintenance according to claim 3, characterized in that: The sensing module includes a piezoelectric sensor disposed on the inner bottom surface of the infusion port. The piezoelectric sensor is configured to sense when the puncture needle touches the inner bottom surface of the infusion port, generate a corresponding puncture depth signal and send it to the main control module. The main control module determines and prompts that the puncture needle has reached the bottom of the infusion port, and stores relevant information about the puncture needle touching the bottom.

7. The teaching device for simulating infusion port maintenance according to claim 3, characterized in that: The sensing module includes an air pressure sensor arranged on the inner wall surface of the infusion port, and the air pressure sensor is configured to monitor the air pressure in the space of the infusion port, and generate a corresponding air pressure signal to send to the main control module, and the main control module determines and prompts whether the inside of the infusion port is positive pressure, and stores relevant information about the air pressure inside the infusion port.

8. The teaching device for simulating infusion port maintenance according to claim 3, characterized in that: The sensing module includes a pair of conductive electrodes arranged in parallel inside the infusion port, and the conductive electrodes are configured to monitor the liquid level height in the infusion port. If the liquid level overflows the conductive electrodes, a corresponding liquid level signal is generated and sent to the main control module. The main control module determines and prompts whether the liquid level in the infusion port is normal, and stores relevant information about the liquid level inside the infusion port.

9. The teaching device for simulating infusion port maintenance according to claim 1, characterized in that: The puncture site skin module is a replaceable component. The puncture site skin modules of different thicknesses and sizes are selected to simulate the maintenance of the infusion port installed under different subcutaneous fat thicknesses of different fat and thin people.

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