Virtual simulation training system for oral local anesthesia

Abstract

The invention relates to the technical field of medical simulation teaching, in particular to an oral local anesthesia virtual simulation training system, which comprises the following modules: a virtual simulation electronic computer system, an oral operation model, disinfection tweezers, disinfection cotton balls, an odontoscope and a simulation injector, and is characterized in that the virtual simulation electronic computer system is implanted with a virtual simulation software system; the oral cavity operation model is connected with the virtual simulation electronic computer system through wireless communication, the mouth part of the oral cavity operation model is provided with a simulation oral cavity structure, and the simulation oral cavity structure comprises a disinfection position area and a needle insertion position. In addition to an anesthesia simulation syringe, the oral cavity operation model further comprises real-time positioning of tools such as an odontoscope and disinfection tweezers, whether a disinfection area and a scheduling sequence are correct or not can be judged, and virtual and real combination of model deformation can be achieved through the oral cavity operation model.

Description

Technical Field

[0001] The present invention relates to the technical field of medical simulation teaching, and in particular to a virtual simulation training system for oral local anesthesia. Background Art

[0002] Oral local anesthesia is one of the most important basic operations in dentistry and is an essential technique for completing extraoral and intraoral restorations. Inexperienced doctors often fail to effectively master the technical essentials, resulting in poor anesthesia effects or even anesthesia failure. Especially for alveolar nerve block anesthesia, the operation of oral surgery local anesthesia is complicated. The existing virtual 3D diagnosis and treatment simulation training environment can complete anesthesia operations such as consultation, preoperative preparation, position adjustment, disinfection, needle insertion, injection, etc. through mouse clicks, dragging, etc., and the system will perform final statistics and scoring on the students' operation points. However, this type of system only simulates operations through ordinary computer input devices such as the mouse, and it is difficult for students to fully master the operation essentials of alveolar nerve block anesthesia after repeated training. There is an urgent need for a targeted oral local anesthesia virtual simulation training system with precise perception capabilities of oral models.

[0003] A Chinese invention patent (CN110060536A) discloses a simulation teaching and testing system for oral local anesthesia injection operations. Multiple sensing devices on an oral model are connected in parallel to the negative pole of a detection prompt device's internal power supply via their respective detection circuits. Each sensing device on the oral model has an indicator light on its detection circuit, and the needle tip sensing device is connected to the positive pole of the detection prompt device's internal power supply via a detection circuit, thus forming a detection prompt circuit. When the needle tip sensing device accurately contacts any sensing device on the oral model, the indicator light on the detection circuit where the sensing device on the oral model is located lights up, indicating correct operation. This detection system can automatically indicate whether the procedure is correct when the examinee correctly positions the needle insertion point or injection point, avoiding the subjective factors in previous assessment methods such as visual inspection, questioning, and listening to the examinee's self-report.

[0004] A Chinese utility model patent (CN211742442U) discloses an oral anesthesia training model, in which the upper jaw is located directly above the lower jaw, with gums on opposite sides of the upper and lower jaws, and a number of teeth in the opposing grooves of the two gums. The tongue is located inside the lower jaw, and two stainless steel bellows are fixedly connected to the left side of the lower jaw from front to back. This solution allows medical staff to adjust the degree of opening and closing of the upper and lower jaws by adjusting the bending angle of the stainless steel bellows during oral anesthesia training. The operation is simple, convenient, and quick, and any angle can be adjusted as needed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a virtual simulation training system for oral local anesthesia in view of the deficiencies of the existing technology.

[0006] The technical problem to be solved by the present invention is achieved through the following technical solutions. The present invention discloses a virtual simulation training system for oral local anesthesia, which includes the following modules: a virtual simulation electronic computer system, an oral operation model, sterilized tweezers, sterilized cotton balls, a mouth mirror and a simulated syringe. The virtual simulation electronic computer system is implanted with a virtual simulation software system. The oral operation model is connected to the virtual simulation electronic computer system via wireless communication. The mouth of the oral operation model is provided with a simulated oral structure. The simulated oral structure includes a disinfection area and a needle insertion position. A gyroscope attitude angle sensor is installed in the simulated syringe. The gyroscope attitude angle sensor is used to interact with the virtual simulation software system for data to determine whether the insertion angle is correct.

[0007] Furthermore, its software system includes the following modules: a login interface module, which is used by the user to input the user name and password, log in to the system and enter the main interface; a case verification interface module, which is used to verify the patient information through text prompts after the main interface is loaded; a medical consultation interface module, which includes an important medical consultation item selection unit, which is used to conduct patient medical consultations by clicking on preset medical consultation items; an instrument selection interface module, which is used to complete the tool selection confirmation operation by clicking on the virtual instrument on the interface, including a virtual instrument selection error correction unit, which is used to prompt the error status when the selection is wrong; a posture selection interface module, which includes a doctor posture selection unit. The Yuanhe patient position selection unit is used to select the correct doctor and patient positions corresponding to this operation; the disinfection interface operation module is used to select the disinfected tweezers and disinfected cotton balls on the virtual interface to disinfect the designated disinfection area; the needle insertion interface operation module is used to select a correct needle insertion point on the virtual interface and use the mouse to adjust the needle insertion process to the specified needle insertion depth and angle; the injection interface operation module is used to adjust the needle insertion depth by dragging the needle tube with the mouse on the virtual interface and inject anesthetics at the specified depth; the assessment score display module is used to perform assessment scores after submitting the results on the virtual interface.

[0008] Furthermore, the virtual operation process of the disinfection interface operation module can exchange data with the process of simulating the disinfection operation of the designated disinfection area of the oral operation model using actual disinfection tweezers and disinfection cotton balls.

[0009] Furthermore, the virtual operation process of the needle insertion interface operation module can exchange data with the simulated operation process of inserting the needle depth and angle of the correct needle insertion point of the oral operation model through an actual simulation syringe.

[0010] Furthermore, the virtual operation process of the injection interface operation module can exchange data with the simulated operation process of the needle insertion depth and anesthetic injection amount of the oral operation model through the actual simulation syringe.

[0011] Furthermore, the needle insertion position includes five adjacent points numbered 1, 2, 3, 4, and 5, and each of the needle insertion points is provided with a conductive rubber component, which is used to determine the position and depth of insertion of the simulated syringe.

[0012] Furthermore, the conductive rubber component includes a silicone rubber block in which conductive particles are evenly distributed so that conductive properties are achieved by contacting the conductive particles through pressure, and the conductive particles include silver-plated glass, silver-plated aluminum, and silver.

[0013] Furthermore, a camera scanning imaging system is provided on the outside of the simulated oral structure, and the camera scanning imaging system is used to perform spatial scanning and positioning of instruments entering the oral cavity through a binocular camera and to perform data interaction with a virtual simulation software system to form a simulated image.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (1) In addition to the anesthesia simulation syringe, the present invention also includes real-time positioning of tools such as a mouth mirror and disinfection tweezers, which can determine whether the disinfection area and scheduling sequence are correct. The oral operation model can achieve a combination of virtual and real model deformation. When the cheeks and tongue of the oral operation model are opened with a mouth mirror, the virtual model in the three-dimensional software is synchronously deformed based on the position constraints in the position dynamics, thereby enhancing the immersive feeling of the operation;

[0016] (2) The oral operation model of the present invention can judge the position and depth of the syringe insertion through the conductive rubber, and the simulated syringe is equipped with a gyroscope attitude angle sensor and a sliding rheostat, which can judge whether the insertion angle is correct based on the position of the insertion point, and judge the advancement of the syringe through the current signal, and then judge the injection volume, thereby realizing the accurate recording of the injection volume during the needle pushing and withdrawing process, so that the system can transmit the information such as the syringe insertion position, depth, angle, injection volume, etc. to the virtual simulation electronic computer system;

[0017] (3) The present invention is aimed at the situation that during anesthesia, it is necessary to first withdraw the syringe to see if there is a requirement for blood injection. The system can determine whether the needle insertion position is correct through position sensing, and realize the training of the withdrawal position search process through alarm prompts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structural principle diagram of the software and hardware system of the present invention;

[0019] Figure 2 is a schematic diagram of the actual training process of the system of the present invention;

[0020] Figure 3 Schematic diagram of the local disinfection simulation operation interface of the disinfection interface operation module of the system of the present invention;

[0021] Figure 4 This is a schematic diagram of the interface for learning needle insertion point selection of the needle insertion interface operation module in the practice mode of the system of the present invention;

[0022] Figure 5 Schematic diagram of the needle angle adjustment training interface of the needle insertion interface operation module in the practice mode of the system of the present invention;

[0023] Figure 6 It is a schematic diagram of the interface of the needle insertion interface operation module during the simulation syringe injection in the simulation test mode of the system of the present invention. DETAILED DESCRIPTION

[0024] like Figure 1-6 As shown, the present invention discloses a virtual simulation training system for oral local anesthesia, comprising the following modules: a virtual simulation electronic computer system, an oral operation model, sterilized tweezers, sterilized cotton balls, a mouth mirror, and a simulated syringe. The virtual simulation electronic computer system is implanted with a virtual simulation software system. The oral operation model is connected to the virtual simulation electronic computer system via wireless communication. The mouth of the oral operation model is provided with a simulated oral structure, the simulated oral structure includes a disinfection area and a needle insertion point, the needle insertion point includes five adjacent points numbered 1, 2, 3, 4, and 5. Each point of the needle insertion point is provided with a conductive rubber component, which is used to determine the position and depth of insertion of the simulated syringe. The conductive rubber component includes a silicone rubber block, in which conductive particles are evenly distributed so that the conductive particles are brought into contact by pressure to achieve conductive properties. The conductive particles include glass-plated silver, aluminum-plated silver, and silver. In another embodiment, the device may not adopt the method of setting a rubber block. The force sense of the syringe piercing is simulated by a force feedback device, thereby distinguishing it from other anesthesia products currently on the market through force feedback.

[0025] In order to enhance the interactivity between actual and virtual operations and improve the accuracy of input and detection of position and posture data of actual operation equipment, a gyroscope attitude angle sensor is installed in the simulated syringe. The gyroscope attitude angle sensor is used to exchange data with the virtual simulation software system to determine whether the insertion angle is correct. A camera scanning imaging system is provided on the outside of the simulated oral structure. The camera scanning imaging system is used to spatially scan and locate the instruments entering the oral cavity using a binocular camera and exchange data with the virtual simulation software system to form a simulated image. The simulated image can be displayed through a VR helmet. The visual of the simulated oral cavity is displayed through the VR helmet. The system's three-dimensional virtual clinic, virtual patient, and virtual instruments and tools can all be displayed through the VR helmet. The insertion force is simulated by a force feedback device. Through the sensing effect of the above device, the virtual operation process of the disinfection interface operation module can exchange data with the process of simulating the disinfection operation of the designated disinfection area of the oral operation model using actual disinfection tweezers and disinfection cotton balls. This disinfection process also simulates the disinfection of the cotton balls by tweezers using the force feedback device, and also generates force sensation when it contacts the soft tissue of the human body. The virtual operation process of the needle insertion interface operation module can exchange data with the simulated operation process of inserting the correct needle point, depth and angle into the oral operation model using an actual simulated syringe. The virtual operation process of the injection interface operation module can exchange data with the simulated operation process of inserting the correct needle point, depth and anesthetic injection amount into the oral operation model using an actual simulated syringe.

[0026] In order to further improve the convenience of the interface simulation operation of the present invention, its software system includes the following modules: a login interface module, which is used for users to enter their username and password, log in to the system and enter the main interface; a case verification interface module, which is used to verify patient information through text prompts after the main interface is loaded; a consultation interface module, which includes an important consultation item selection unit, which is used to conduct patient consultations by clicking on preset consultation items; an instrument selection interface module, which is used to complete the tool selection confirmation operation by clicking on virtual instruments on the interface, and includes a virtual instrument selection error correction unit, which is used to prompt the error status when an error is selected; a body position selection interface module, which includes a doctor body position selection unit and a patient body position selection unit, which is used to select the correct doctor and patient corresponding to this operation Corresponding body position; disinfection interface operation module, used for selecting disinfection tweezers and disinfection cotton balls in the virtual interface to disinfect the designated disinfection area; needle insertion interface operation module, used for selecting a correct needle insertion point in the virtual interface and adjusting the needle insertion process of the specified needle insertion depth and angle with the help of the mouse, and the needle insertion point is completed by the visual image and force feedback device of the VR helmet; injection interface operation module, used for adjusting the needle insertion depth by dragging the needle tube with the mouse in the virtual interface and injecting anesthetic at the specified depth; assessment and scoring display module, used for assessment and scoring after submitting the results in the virtual interface, when injecting, the injection dose can be calculated by pushing the simulation syringe, which is provided with a sliding rheostat, and the other end of the syringe is connected to the force feedback device. The simulation syringe of the present invention is provided with a resistance ruler, and the injection can be achieved by pushing the piston rod, or the operator can also achieve extraction and injection operations through the keyboard.

[0027] Specifically, the training process of the present invention may include the following steps:

[0028] Step 1: The user enters the user name and password, logs into the system and enters the system main interface;

[0029] Step 2: After loading is complete, enter the patient information verification interface, follow the text prompts, start verifying the patient information, and click the "OK" button;

[0030] Step 3: Enter the "Consultation" interface. On the left is the area where you can ask the patient questions. Select important consultation items and ask the patient questions.

[0031] Step 4. After the consultation is completed, click the "OK" button to switch to the medical instrument tray. Click to select the instruments needed for the operation. A selected status will appear after the tool name. After all are selected, click the "Confirm Tool" button to complete the selection operation. If an incorrect selection is made, an error status will be displayed after the tool name. Only after all are selected correctly can the operation be completed and the next step can be taken.

[0032] Step 5. Click the patient model in the scene to pop up the position selection window. Click to select the patient's position during the doctor's surgery, and then click the "OK" button to complete the selection. If you make an incorrect selection, a prompt will appear. Select again to complete the operation.

[0033] Step 6. Click the "OK" button and use the mouse to click the cotton ball on the right to start disinfection. If the cotton ball is selected incorrectly, a prompt will appear indicating that the selection is wrong. Select again to complete the operation. After the disinfection is completed, click the "Disinfection Completed" button in the lower right corner to submit the disinfection operation.

[0034] Step 7. Select the insertion point. The insertion point should be 3-4 mm lateral to the midpoint of the pterygomandibular fold. If you make an incorrect selection, a prompt will appear. Select again to complete the operation. Use the mouse or the simulated syringe to adjust the insertion angle. The injection needle should be at a 45° angle to the midline and 1 cm above and parallel to the mandibular surface. If you make an incorrect selection, a prompt will appear. Select again to complete the operation. Click "Adjust Angle Complete" to complete the operation.

[0035] Step eight, click "OK" to start the anesthesia injection, anesthetize the inferior alveolar nerve, lingual nerve and buccal nerve. By dragging the needle with the mouse, you can adjust the depth of the needle. With the mandibular nerve groove as the target, insert the needle about 2.5cm; push the syringe forward to inject liquid into the oral cavity for anesthesia. The depth of the needle insertion for anesthetizing the inferior alveolar nerve is about 2.5cm. Pull back to observe whether there is blood reflux in the injection syringe. If there is blood reflux, the injection needle can be withdrawn to the submucosal membrane, and the needle direction can be changed. Increase the angle with the midline for insertion, and slowly advance the needle about 2.5cm according to the needle insertion point and needle insertion direction. Pull back to observe whether there is blood reflux in the injection syringe. If there is no blood reflux, slowly inject 1.5ml~2ml of anesthetic to anesthetize the inferior alveolar nerve; to anesthetize the ipsilateral serratus nerve, withdraw the injection needle to 15mm and inject 0.5~1ml of anesthetic; to anesthetize the ipsilateral buccal nerve, withdraw the injection needle to a depth of about 2mm under the mucosa and inject 0.5ml of anesthetic. After anesthesia is completed, withdraw the syringe from the oral cavity. Click the "Operation Completed" button;

[0036] Step nine: After submitting the results, you will be taken to the assessment scoring page. This page displays the training time, score, training operation time and specific correct operation steps. The interface lists the assessment points, actual operations, scores and correct operations.

[0037] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. Oral local anesthesia virtual simulation training system, characterized by: The invention comprises the following modules: a virtual simulation electronic computer system, an oral operation model, sterilized tweezers, sterilized cotton balls, a mouth mirror and a simulated syringe. The virtual simulation electronic computer system is implanted with a virtual simulation software system. The oral operation model is connected to the virtual simulation electronic computer system via wireless communication. The mouth of the oral operation model is provided with a simulated oral structure, which includes a disinfection area and a needle insertion area. A gyroscope attitude angle sensor is installed in the simulated syringe. The simulated syringe is connected to a force feedback device. The gyroscope attitude angle sensor is used to exchange data with the virtual simulation software system to determine whether the insertion angle is correct.

2. The oral local anesthesia virtual simulation training system according to claim 1, characterized in that: Its software system includes the following modules: The login interface module is used for users to enter their username and password, log in to the system and enter the main interface; the case verification interface module is used to verify patient information through text prompts after the main interface is loaded; the consultation interface module includes an important consultation item selection unit, which is used to conduct patient consultations by clicking on preset consultation items; The instrument selection interface module is used to complete the tool selection confirmation operation by clicking on the virtual instrument on the interface, including a virtual instrument selection error correction unit for prompting the error status when an error is selected; the body position selection interface module includes a doctor position selection unit and a patient position selection unit for selecting the correct doctor and patient position corresponding to the current operation; The disinfection interface operation module is used to select the disinfection tweezers and disinfection cotton balls on the virtual interface to disinfect the designated disinfection area; the needle insertion interface operation module is used to select a correct needle insertion point on the virtual interface and use the mouse to adjust the needle insertion process to the specified needle insertion depth and angle; the injection interface operation module is used to adjust the needle insertion depth by dragging the needle tube with the mouse on the virtual interface and inject anesthetics at the specified depth; the assessment and scoring display module is used to perform assessment and scoring after submitting the results on the virtual interface.

3. The oral local anesthesia virtual simulation training system according to claim 2, characterized in that: The virtual operation process of the disinfection interface operation module can interact with the data of the process of simulating the disinfection operation of the designated disinfection area of the oral operation model by using actual disinfection tweezers and disinfection cotton balls.

4. The oral local anesthesia virtual simulation training system according to claim 2, characterized in that: The virtual operation process of the needle insertion interface operation module can exchange data with the simulated operation process of inserting the needle depth and angle of the correct needle insertion point of the oral operation model through an actual simulation syringe.

5. The oral local anesthesia virtual simulation training system according to claim 2, characterized in that: The virtual operation process of the injection interface operation module can exchange data with the simulated operation process of the needle insertion depth and anesthetic injection amount of the oral operation model through the actual simulation syringe.

6. The oral local anesthesia virtual simulation training system according to claim 1, characterized in that: The needle insertion position includes five adjacent points numbered 1, 2, 3, 4, and 5. A conductive rubber component is provided at each of the needle insertion points. The conductive rubber component is used to determine the position and depth of insertion of the simulated syringe.

7. The oral local anesthesia virtual simulation training system according to claim 6, characterized in that: The conductive rubber component includes a silicone rubber block in which conductive particles are evenly distributed so that conductive particles are brought into contact with each other through pressure to achieve conductive properties. The conductive particles include silver-plated glass, silver-plated aluminum, and silver.

8. The oral local anesthesia virtual simulation training system according to claim 1, characterized in that: A camera scanning imaging system is provided on the outside of the simulated oral structure. The camera scanning imaging system is used to perform spatial scanning and positioning of instruments entering the oral cavity through a binocular camera and to perform data interaction with a virtual simulation software system to form a simulated image.

Images