Ultrasonic-guided downward articular cavity puncture, liquid extraction and drug injection treatment training model

Abstract

The invention discloses an ultrasonic-guided downward joint cavity puncture, liquid extraction and medicine injection treatment training model. The ultrasonic-guided downward articular cavity puncture, aspiration and injection drug treatment training model comprises an analogue simulation system which is used for simulating a real articular cavity puncture, aspiration and injection process; the ultrasonic guidance system is used for providing real-time ultrasonic images to guide puncture operation; and the feedback system is used for simulating the hand feeling when the medicine is injected. According to the ultrasonic-guided downward articular cavity puncture liquid extraction and medicine injection treatment training model, the problem that medical staff lack enough exercise before actually conducting articular cavity puncture operation on a patient is solved, injuries, such as bleeding, infection and nerve injuries, caused by unskilled operation, to the patient in clinical practice are reduced, and the treatment effect is improved. And the medical quality and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a training model for ultrasound-guided joint cavity puncture, fluid extraction and drug injection therapy. Background Art

[0002] The lining of the joint contains synovial tissue, which produces synovial fluid, which lubricates the joint and protects the cartilage. When the knee joint is irritated or injured, such as a meniscus tear or knee osteoarthritis, as well as infection and inflammatory arthritis, excess fluid, called a joint effusion, can form.

[0003] The main component of joint effusion is water. Ultrasound can be used to understand the amount of effusion in the knee and guide puncture and aspiration. Puncture and aspiration can effectively relieve the pressure in the joint. After aspiration, sealing can promote the relief of inflammation.

[0004] The current problem is that medical staff lack sufficient practice before actually performing joint puncture on patients, cannot accurately locate the joint cavity and master the angle and depth of puncture, and cannot ensure the accuracy and safety of puncture. In addition, some medical staff are not familiar with the steps of ultrasound-guided puncture.

[0005] In view of the above technical problems, the applicant urgently needs to design a model for training joint cavity puncture, fluid extraction and drug injection under ultrasound guidance to solve the above technical problems. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide an ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model for treatment. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model is designed to solve the problem that medical staff lack sufficient practice before actually performing joint cavity puncture on patients.

[0007] The present invention solves the above technical problems by the following technical means:

[0008] The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model of the present invention includes a platform, and the following systems are arranged on the platform: a simulation system for simulating the actual joint cavity puncture, fluid extraction and injection process; an ultrasound guidance system for providing real-time ultrasound images to guide the puncture operation; and a feedback system for simulating the hand feel when injecting drugs.

[0009] Furthermore, the simulation system includes: a joint model that simulates a real joint structure and gap; the outer side of the joint model is coated with a flesh tissue simulation layer made of silicone material for simulating real muscle and skin tissue, and a joint cavity is set between the flesh tissue simulation layer and the joint model; a conductive layer is set on the outer surface of the joint model; an injection system is used to simulate the injection of drugs into the joint cavity; the injection system includes an injection needle, a wire A connected to the bottom of the injection needle tip, a buzzer and a power supply connected in series on the wire A, the power supply is connected to the conductive layer through the wire B, and the wire A and the wire B are respectively connected to the two poles of the power supply; a fluid system is used to simulate joint effusion and drug distribution.

[0010] Furthermore, the ultrasound guidance system includes: an ultrasound probe for acquiring an ultrasound image of the joint cavity; a real-time image processing system for processing and displaying the ultrasound image, the real-time image processing system includes a display screen and a display screen support frame, the display screen support frame includes a column erected in the middle of the platform, a spherical universal joint is arranged on the top of the column, the middle part of the back side of the display screen is connected to the spherical universal joint, and there is a damping force when the joint of the spherical universal joint moves.

[0011] Furthermore, the feedback system includes a pressure sensor A and a pressure sensor B, the injection needle includes a push rod, and the pressure sensor A is arranged at the tail end of the push rod of the injection needle; the fluid system includes a liquid storage bag containing insulating liquid, an infusion tube connecting the interior of the liquid storage bag with the joint cavity, and a peristaltic pump arranged on the infusion tube, and the pressure sensor B is arranged on the infusion tube between the peristaltic pump and the joint cavity, and the pressure sensor B is used to detect the liquid pressure inside the infusion tube.

[0012] Furthermore, it includes a computer control system for controlling and coordinating the operation of various components, recording and analyzing training data; the computer control system includes a controller, which is respectively connected to the ultrasound guidance system, pressure sensor A and pressure sensor B circuits.

[0013] Furthermore, the joint model is made of a transparent insulating material, the conductive layer is pasted on the outer surface of the joint model, and the conductive layer is a transparent conductive film.

[0014] Furthermore, the injection needle also includes a syringe and a catheter whose one end is connected to the interior of the front end of the syringe, the other end of the catheter is connected to the interior of the liquid storage bag, and a throttle valve is arranged on the catheter.

[0015] Furthermore, the flesh tissue simulation layer can be unfolded into an irregular cuboid, and watertight zippers are arranged at both end edges of the cuboid. The inner side of the flesh tissue simulation layer surrounding the joint cavity is detachably adhesively connected to the joint model.

[0016] Furthermore, the controller is connected to a buzzer to detect whether the buzzer is working; the computer control system can record and save the trainee's operation data and exercise results for evaluating and improving the training effect.

[0017] Furthermore, the joint model at least includes a joint A and a joint B, and a tilt sensor is respectively arranged on the joint A and the joint B, and each tilt sensor is respectively connected to the controller circuit.

[0018] Beneficial effects of the present invention: The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model of the present invention includes a simulation system for simulating the actual joint cavity puncture, fluid extraction and injection process; an ultrasound guidance system for providing real-time ultrasound images to guide the puncture operation; and a feedback system for simulating the feel of injecting drugs. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model of the present invention solves the problem of medical staff lacking sufficient practice before actually performing joint cavity puncture operations on patients, reduces the risk of damage to patients caused by unskilled operation in clinical practice, such as bleeding, infection, nerve damage, etc., and improves medical quality and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the middle A area;

[0022] Figure 3 It is a three-dimensional structural diagram of the simulation system;

[0023] Figure 4 The present invention is a working state diagram of the ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model during puncture training. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings:

[0025] like Figure 1-Figure 4As shown: the ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model in this embodiment includes a platform, and the platform 31 is provided with the following systems: a simulation system for simulating the real joint cavity puncture, fluid extraction and injection process; an ultrasound guidance system for providing real-time ultrasound images to guide the puncture operation; a feedback system for simulating the feel of injecting drugs. Specifically, the simulation system includes a joint model, which is used to simulate the real joint structure and gap; the outer side of the joint model is coated with a flesh tissue simulation layer 1 made of silicone material for simulating real muscle and skin tissue, and a joint cavity 2 is formed between the flesh tissue simulation layer and the joint model; a conductive layer 3 is provided on the outer surface of the joint model; an injection system for simulating the injection of drugs into the joint cavity; the injection system includes an injection needle 4, a wire A5 connected to the bottom of the injection needle, a buzzer 6 and a power supply 7 connected in series on the wire A5, the power supply is connected to the conductive layer 3 through a wire B8, and the wire A5 and the wire B8 are respectively connected to the two poles of the power supply 7; a fluid system for simulating joint effusion and drug distribution. Specifically, the ultrasound guidance system includes: an ultrasound probe 90 for acquiring an ultrasound image of the joint cavity; a real-time image processing system for processing and displaying the ultrasound image, the real-time image processing system includes a display screen 91 and a display screen support frame, the display screen support frame includes a column 92 erected in the middle of the platform, a spherical universal joint 93 is arranged on the top of the column, the middle part of the back side of the display screen is connected to the spherical universal joint, and there is a damping force when the joint of the spherical universal joint moves.

[0026] The method of using the ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model of the present invention is as follows: when performing puncture training, first empty the insulating liquid in the injection needle, inject the insulating liquid into the joint cavity through the fluid system, and after the injection is completed, turn on the ultrasonic guidance system, the doctor holds the ultrasonic probe in one hand to contact the flesh tissue simulation layer, the ultrasonic probe is aimed at the joint cavity on the joint model, and the medical staff uses the puncture needle with the other hand to puncture the flesh tissue simulation layer. During the puncture, the ultrasonic image displayed by the real-time image processing system is always observed. When the medical staff is not skilled in puncture, even under ultrasound guidance, the needle of the puncture needle is easy to pierce the synovial tissue, that is, when the needle pierces the conductive layer simulating the synovial tissue, a closed circuit will be formed, and the buzzer will sound an alarm at this time, thereby prompting the doctor to adjust the puncture angle in time.

[0027] As a further improvement of the above technical solution, Figure 2As shown, the feedback system includes a pressure sensor A10 and a pressure sensor B11, the injection needle 4 includes a push rod 12, and the pressure sensor A is arranged at the tail end of the push rod of the injection needle; the fluid system includes a liquid storage bag 13 containing insulating liquid, an infusion tube 14 connecting the interior of the liquid storage bag 13 with the joint cavity, and a peristaltic pump 15 arranged on the infusion tube, and the pressure sensor B11 is arranged on the infusion tube 14 between the peristaltic pump 15 and the joint cavity 2, and the pressure sensor B11 is used to detect the liquid pressure inside the infusion tube. Specifically, it also includes a computer control system for controlling and coordinating the operation of each component, recording and analyzing training data; the computer control system includes a controller, the controller is respectively connected to the ultrasound guidance system, pressure sensor A and pressure sensor B circuit, and the controller is also connected to a buzzer to detect whether the buzzer is working; before puncturing, the insulating liquid is delivered to the joint cavity by the peristaltic pump 15, and the pressure sensor B will obtain the pressure value of the insulating liquid. When the liquid pressure in the joint cavity reaches the set value, the controller will send a shutdown command to the peristaltic pump to turn off the peristaltic pump. When performing simulated drug injection training, the push rod that pushes the puncture needle can perform drug administration. When the force of pushing the drug exceeds the set force, the pressure sensor A will send the obtained thrust information to the controller, and the controller will drive the buzzer to sound an alarm, and the doctor can reduce the speed of pushing the drug. Therefore, according to the feedback system, the doctor can control the speed and amount of pushing the drug. The computer control system can record and save the trainee's operation data and practice results for evaluating and improving the training effect.

[0028] As a further improvement of the above technical solution, the joint model is made of a transparent insulating material, the conductive layer is pasted on the outer surface of the joint model, and the conductive layer 3 is a transparent conductive film. The conductive layer is set as a conductive film that can be pasted on the joint model. The purpose is: when the conductive film is repeatedly punctured by the puncture needle and can no longer be used, it can be maintained by replacing the conductive film without replacing the entire joint model, thereby reducing maintenance costs.

[0029] As a further improvement of the above technical solution, the injection needle 4 also includes a syringe 41 and a conduit 16 whose one end is interconnected with the interior of the front end of the syringe, and the other end of the conduit is interconnected with the interior of the liquid storage bag 13. A throttle valve 17 is arranged on the conduit, and a valve 18 is arranged at the position where the front end of the syringe is connected to the needle. When the liquid is drawn, the valve 18 is first closed, and then the throttle valve 17 is opened, and the injection needle push rod is pushed to inject the insulator in the syringe back into the liquid storage bag 13. Therefore, the purpose of the above improved setting is: the insulating liquid can be repeatedly used, thereby reducing the training cost.

[0030] As a further improvement of the above technical solution, the flesh tissue simulation layer can be unfolded into an irregular cuboid, and watertight zippers are arranged at the two end edges of the cuboid, and the flesh tissue simulation layer is detachably adhesively connected to the joint model around the joint cavity. When the flesh tissue simulation layer needs to be replaced after being punctured repeatedly, the above improved arrangement makes it more convenient and quick to replace the flesh tissue simulation layer.

[0031] As a further improvement of the above technical solution, the joint model includes at least one joint A19 and one joint B20, and an inclination sensor 21 is respectively arranged on the joint A and the joint B, and each inclination sensor is respectively connected to the controller circuit. Preferably, two sets of joint models are arranged on the platform, one set is a knee joint model and the other set is a shoulder joint model, and a model fixing device is arranged under each set of joint models, and the model fixing device includes a joint A fixing frame 22, a joint B fixing frame, two fixed pulleys 24, a transmission belt 25, a moving block 26, a motor 27, and a gear. The joint B fixing frame includes a support rod 23, a sleeve 28 arranged on the support rod, and a clamp 29 for fixing the joint that is rotatably connected to the sleeve. The two ends of the transmission belt are sleeved on the fixed pulley, the moving block is fixed on the conveyor belt, the motor is arranged on the side of the moving block, the support rod is arranged on the top of the moving block, the conveyor belt has teeth inside, and the gear The power output shaft of the motor is coaxially arranged, and the transmission belt is meshed with the gear. Before puncture, the motor can be controlled by the controller, and the motor drives the conveyor belt to move. The moving block moves with the conveyor belt, thereby driving the support rod to move. After the support rod moves, the angle between joint A and joint B can be adjusted. The inclination angle of joint A and joint B can be fed back to the controller through the inclination sensors arranged on each of them. The controller can calculate the angle between joint A and joint B based on the inclination angle of joint A and joint B. The doctor can perform puncture training at different joint angles. The computer control system can record the error rate during puncture training at various joint angles. The above settings can help doctors find the best puncture angle, thereby reducing the puncture error rate.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model, comprising a platform, characterized in that: The following systems are provided on the platform: A simulation system to simulate the actual joint cavity puncture, fluid extraction and injection process; an ultrasound guidance system for providing real-time ultrasound images to guide the puncture procedure; A feedback system that simulates the feel of injecting medication.

2. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 1 is characterized by: The simulation system comprises: A joint model, simulating a real joint structure and gap; the outer side of the joint model is coated with a flesh tissue simulation layer made of silicone material for simulating real muscle and skin tissue, and a joint cavity is arranged between the flesh tissue simulation layer and the joint model; the outer surface of the joint model is provided with a conductive layer; An injection system for simulating the injection of drugs into a joint cavity; the injection system comprises an injection needle, a wire A connected to the bottom of the needle head of the injection needle, a buzzer and a power supply connected in series to the wire A, the power supply is connected to the conductive layer through a wire B, and the wire A and the wire B are respectively connected to the two poles of the power supply; A fluid system for simulating joint effusion and drug distribution.

3. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 2 is characterized by: The ultrasound guidance system comprises: an ultrasound probe for obtaining ultrasound images of the joint cavity; A real-time image processing system is used to process and display ultrasonic images. The real-time image processing system includes a display screen and a display screen support frame. The display screen support frame includes a column erected in the middle of a platform. A spherical universal joint is arranged on the top of the column. The middle of the back of the display screen is connected to the spherical universal joint. There is a damping force when the joint of the spherical universal joint moves.

4. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 3 is characterized by: The feedback system includes a pressure sensor A and a pressure sensor B. The injection needle includes a push rod, and the pressure sensor A is arranged at the tail end of the push rod of the injection needle; the fluid system includes a liquid storage bag containing insulating liquid, an infusion tube connecting the interior of the liquid storage bag with the joint cavity, and a peristaltic pump arranged on the infusion tube. The pressure sensor B is arranged on the infusion tube between the peristaltic pump and the joint cavity, and the pressure sensor B is used to detect the liquid pressure inside the infusion tube.

5. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 4 is characterized by: It includes a computer control system for controlling and coordinating the operation of various components, and recording and analyzing training data; the computer control system includes a controller, which is respectively connected to the ultrasound guidance system, the peristaltic pump, the pressure sensor A and the pressure sensor B circuits.

6. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 5, characterized in that: The joint model is made of a transparent insulating material, the conductive layer is pasted on the outer surface of the joint model, and the conductive layer is a transparent conductive film.

7. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 6, characterized in that: The injection needle also includes a syringe and a conduit whose one end is connected to the interior of the front end of the syringe, the other end of the conduit is connected to the interior of the liquid storage bag, and a throttle valve is arranged on the conduit.

8. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 7, characterized in that: The flesh tissue simulation layer can be unfolded into an irregular cuboid, and watertight zippers are arranged at the two end edges of the cuboid. The inner side of the flesh tissue simulation layer surrounding the joint cavity is detachably adhesively connected to the joint model.

9. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 8, characterized in that: The controller is connected to the buzzer to detect whether the buzzer is working; the computer control system can record and save the trainee's operation data and exercise results for evaluating and improving the training effect.

10. The ultrasound-guided joint cavity puncture, fluid extraction and drug injection training model according to claim 9, characterized in that: The joint model at least includes a joint A and a joint B. A tilt sensor is respectively arranged on the joint A and the joint B. Each tilt sensor is respectively connected to the controller circuit.

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