Training system and method for virtual simulation resectoscope operation

Abstract

The invention relates to the technical field of resectoscope surgery simulation training, and discloses a virtual simulation resectoscope surgery training system which comprises a preset model scene unit, a simulation system configuration unit, a simulation system guide prompt unit, a simulation system operation unit and a simulation system operation effect unit. The invention further discloses a method of the training system for the virtual simulation resectoscope surgery. The method comprises the following steps that S1, a training scene and an operation object are constructed; s2, preoperative preparation and simulation surgical instrument selection; s3, simulating surgical operation; and S4, simulation training evaluation. According to the method, the training scene and the corresponding operation object are constructed, resectoscope operation simulation training is completed in the virtual scene through guiding prompt, and a detailed simulation training score evaluation table is displayed after training is finished; an operator can carry out targeted training according to own weak points, and the training effect is better; the method is not limited by manpower, material resources and sites, does not need other guidance, and is suitable for daily development.

Description

Technical Field

[0001] The invention relates to the technical field of electroresection surgery simulation training, and in particular to a training system and method for virtual simulation electroresection surgery. Background Art

[0002] Resectoscopes include prostate resectoscopes for clinical urology and hysteroscopic resectoscopes for gynecology. Prostate resectoscopes are mainly used for the removal of prostate glandular tissue hyperplasia; hysteroscopic resectoscopes are mainly used for the removal of pathological tissues such as uterine fibroids and uterine polyps. The surgical methods include: electroresection, plasma enucleation, laser treatment, and bladder tumor electroresection; by replacing other instruments such as electroresection needles and rolling ball electrodes, uterine septum incision and endometrial hyperplasia can also be performed. The resectoscope system mainly includes: imaging system, light-guiding optical fiber, mirror body, water inlet and outlet system; the resectoscope is mainly composed of working handpieces, inner sheath, outer sheath, and instruments (electroresection ring).

[0003] Training for electroresection surgery can be conducted using animal or in vitro experiments, or using simulation training in a training box. Simulation training in a training box is mostly physical training, such as cutting a channel inside an apple to simulate cutting the prostate, and using a black bag in front to simulate the position and function of the bladder, pushing the cut flesh into the black bag. There is also simulation training such as peeling along the gap between the orange flesh and the orange peel.

[0004] However, animal or in vitro experiments have high thresholds and are limited by manpower, material resources, and venues. They are not easy to carry out frequently and are not suitable for daily use. In addition, training in training boxes is open-ended, lacking training design and training guidance. There is no training rule guidance under system design, and the training lacks purpose. Summary of the invention

[0005] The purpose of the present invention is to provide a training system and method for virtual simulation resectoscope surgery to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A virtual simulation resection surgery training system includes a preset model scene unit, a simulation system configuration unit, a simulation system guidance prompt unit, a simulation system operation unit, a simulation system operation effect unit and a simulation system performance evaluation unit;

[0008] The preset model scene unit is used to construct a training scene and corresponding operation objects;

[0009] The simulation system configuration unit is used to load and display training scenes and corresponding operation objects, and select simulated surgical instruments;

[0010] The simulation system guidance prompt unit is used to provide process prompts, operation prompts and error prompts;

[0011] The simulation system operation unit is used to operate the simulation instrument of the resectoscope to complete the operation steps of the corresponding surgery in the virtual scene;

[0012] The simulation system operation effect unit is used to display the operation effect;

[0013] The simulation system performance evaluation unit is used to automatically generate a simulation training performance evaluation table after the simulation training is completed.

[0014] As a further solution of the present invention: in the preset model scene unit, the training scene includes a 3D model of urological resection surgery and a 3D model of gynecological resection surgery; wherein,

[0015] The operation objects of the urological resection surgery model include: urethra and urethral mucosa mapping module, prostate and layered tissue module, bladder and bladder trigone, right wall, anterior wall, left wall and posterior wall module, interureteral ridge and ureteral orifice module; among them, the prostate and layered tissue module includes: urethral mucosa, hyperplastic layer, surgical capsule and normal prostate tissue;

[0016] The operating objects of the gynecological electroresectomy surgery model include: the external cervical os, the cervix and cervical canal module, the uterine cavity module, and the bilateral fallopian tube module; wherein the uterine cavity module includes: the endometrial layer, the myometrium and the serosa layer.

[0017] As a further solution of the present invention: in the simulation system guidance prompt unit,

[0018] Process prompts are used to provide operation process guidance in the form of text, graphics and voice broadcast according to the training design, so as to help operators complete the training independently;

[0019] Operation prompts are used to provide specific action prompts during training.

[0020] A method for a training system of a virtual simulation resection surgery comprises the following steps:

[0021] S1. Construction of training scenes and operation objects: Construction of training scenes and corresponding operation objects based on clinical human body structure, setting different lesions at different locations in the training scenes according to different cases, and associating real surgical instruments with the training scenes and corresponding operation objects;

[0022] S2. Preoperative preparation and selection of simulated surgical instruments: The operator enters the training system and loads the training scenario; then performs relevant preoperative preparation operations according to the prompts and selects simulated surgical instruments; depending on the case, the simulated instruments include: monopolar electrosurgical ring, bipolar electrosurgical ring, rolling ball electrode, needle electrode, holmium laser fiber, aspirator and pulverizer;

[0023] S3, simulated surgical operation: the operator uses a real conventional endoscope to perform examination according to the guidance prompts, and uses the simulated endoscope to check the location and morphology of the lesion on the operation object; the operator then operates the real resectoscope and uses the resection ring of the simulated resectoscope to cut the lesion tissue in the virtual scene; at the same time, the operator is provided with simulated tactile and visual feedback, and the data of the real surgical instruments and each operation action are collected; for operation errors, the corresponding clinical effects are simulated;

[0024] S4. Simulation training evaluation: The operator performs open surgical simulation operations according to the guidance prompts; the system makes real-time operation judgments. If there are incorrect operations and operational errors, there will be real-time judgments and error prompts, and prompts on how to solve the current errors. When the operator completes the surgical operation process in sequence, the training system prompts that the simulation training is completed. After the operator exits the training, the system scores and evaluates each operation process, and automatically generates a simulation training performance evaluation table based on the operation situation.

[0025] As a further solution of the present invention: in the step S3, the data of the real surgical instrument includes the position depth, moving speed, moving direction and moving amplitude of the surgical instrument; these data are used to judge whether the surgical instrument moves too fast or too deep, thereby affecting the safety of the patient; and to judge whether the operator is proficient in the use of the surgical instrument.

[0026] As a further solution of the present invention: in the step S3, the data of the operation action includes the cutting position and the cutting thickness; so as to judge whether the cutting depth meets the surgical requirements, whether important tissues are cut, and whether bleeding occurs when the blood vessels are cut.

[0027] As a further solution of the present invention: in the step S4, the simulation training performance evaluation table includes: whether the lesion has been removed as required, whether important tissues have been cut, whether bleeding has occurred, whether bleeding has been stopped as required, the number of errors in the operation process, the score of each operation process and the total score.

[0028] In the step S4, the method for generating the simulation training performance evaluation table is as follows:

[0029] S41, importing the scoring table into the system through a conversion program, establishing a one-to-one correspondence between the scoring code and the scoring data, and saving it to the database;

[0030] S42, when entering the simulation training, automatically loading the scoring data related to this training, and recording the scoring code corresponding to the score during the training process;

[0031] S43. When the training is finished, the complete information corresponding to the item is found according to the recorded scoring code, and a specific scoring result report is generated.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention constructs training scenes and corresponding operation objects, and completes the simulation training of electroresection surgery in the virtual scene through guidance and prompts, and gives prompts in fonts when there are operation errors or mistakes in the middle, and displays a detailed simulation training performance evaluation table after the training. The operator can carry out targeted training according to his own weaknesses, and the training effect is better; and it is not limited by manpower, material resources and venues, and does not require guidance from others. The operator can carry out independent training, which is suitable for daily development; in addition, it also has outstanding value in clinical teaching. The teaching teacher can use rich virtual case examples for clinical teaching, teach the operation method, and the trainees can perform synchronous simulation training. And clinical case discussion and practice can also be carried out through 3D models. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a simulation effect diagram of a virtual simulation electroresection surgery training system. DETAILED DESCRIPTION

[0035] In an embodiment of the present invention, a virtual simulation resectoscope surgery training system includes a preset model scene unit, a simulation system configuration unit, a simulation system guidance prompt unit, a simulation system operation unit, a simulation system operation effect unit and a simulation system performance evaluation unit;

[0036] The preset model scene unit is used to construct training scenes and corresponding operation objects;

[0037] The simulation system configuration unit is used to load and display the training scene and the corresponding operation objects, and select the simulated surgical instruments;

[0038] The simulation system guidance prompt unit is used to provide process prompts, operation prompts and error prompts;

[0039] The simulation system operation unit is used to operate the simulated instrument of the resectoscope and complete the operation steps of the corresponding surgery in the virtual scene;

[0040] The simulation system operation effect unit is used to show the operation effect; for example, there will be a strong feedback effect when cutting tissue or hitting the wall, bubbles or electric cutting ring electrification effect when cutting; there will be a bleeding effect when cutting a blood vessel, the shape of blood flow in the liquid, and the diffusion of blood after hemostasis; there will be a stump after cutting, and a burning effect at the cross section; there will be bubbles gathering at the top of the bladder and the anterior wall of the uterus;

[0041] The simulation system performance evaluation unit is used to automatically generate a simulation training performance evaluation table after the simulation training is completed.

[0042] Preferably, in the preset model scene unit, the training scene includes a 3D model of urological resection surgery and a 3D model of gynecological resection surgery; wherein,

[0043] The operation objects of the urological resection surgery model include: urethra and urethral mucosa mapping module, prostate and layered tissue module, bladder and bladder trigone, right wall, anterior wall, left wall and posterior wall module, interureteral ridge and ureteral orifice module; among them, the prostate and layered tissue module includes: urethral mucosa, hyperplastic layer, surgical capsule and normal prostate tissue;

[0044] The operating objects of the gynecological electroresectomy surgery model include: the external cervical os, the cervix and cervical canal module, the uterine cavity module, and the bilateral fallopian tube module; wherein the uterine cavity module includes: the endometrial layer, the myometrium and the serosa layer.

[0045] Preferably, in the simulation system boot prompt unit,

[0046] Process prompts are used to provide operation process guidance in the form of text, graphics and voice broadcast according to the training design, so as to help operators complete the training independently;

[0047] Operation prompts are used to provide specific action prompts during the training process, such as voice announcement: Please insert the endoscope to examine the bulbar urethra, external sphincter, membranous urethra, spermatic capillaries or prostate, and the operator can perform the corresponding actions.

[0048] A method for a training system of a virtual simulation resection surgery comprises the following steps:

[0049] S1. Construction of training scenes and operation objects: Construction of training scenes and corresponding operation objects based on clinical human body structure, and setting different lesions at different locations in the training scenes according to different cases, such as setting hyperplasia on the prostate and layered tissue modules; setting fibroids in the lower part of the uterine cavity module; setting polyps in the endometrial layer; associating real surgical instruments with training scenes and corresponding operation objects; specific approach: after importing triangular mesh data, the software uses a tetrahedron partitioning algorithm based on Delaunay partitioning, first converting the surface mesh into a tetrahedral volume mesh, and then setting the elastic modulus, rigidity coefficient, thermal solubility coefficient and other parameters of soft tissues of different layers according to medicine;

[0050] The simulation method selected was a finite element simulation solver based on Lagrange multipliers to show the deformation effect of tissues with different elasticity and hardness.

[0051] S2. Preoperative preparation and selection of simulated surgical instruments: The operator enters the training system and loads the training scene. The operator then follows the prompts to perform relevant preoperative preparation operations and select simulated surgical instruments, such as conventional endoscopes and resectoscopes. Collision bodies of different instruments are set up, which can interact with the above-mentioned software bodies in the scene and are solved uniformly through the solver in S1, thereby simulating the collision between instruments and soft tissues in real medical scenes.

[0052] S3. Simulated surgical operation: the operator uses a real conventional endoscope to check according to the guidance prompts, and uses the simulated endoscope to check the location and morphology of the lesion on the operation object; the operator then operates the real resectoscope, and uses the resection ring of the simulated resectoscope to cut the lesion tissue in the virtual scene; in the software, the Boolean operation of tetrahedron is performed through virtual instruments of different shapes and scene organizations to realize the soft tissue cutting function, and the correctness of the position of electrocoagulation, electrocution, etc. is judged by the collision position and strength of the virtual instrument and the virtual soft tissue, and the blood diffusion effect is rendered to express the consistency with the real scene, while providing the operator with simulated tactile and visual feedback, and collecting the data of the real surgical instrument and each operation action; for operational errors, the corresponding clinical effects are simulated, such as uterine bleeding, uterine perforation, ureteral atresia, bladder perforation, and arterial bleeding caused by cutting too deep, so as to facilitate error demonstration in clinical teaching; Figure 1 As shown;

[0053] S4. Simulation training evaluation: The operator performs open surgical simulation operations according to the guidance prompts; the system makes real-time operation judgments. If there are incorrect operations and operational errors, there will be real-time judgments and error prompts, and prompts on how to solve the current errors. When the operator completes the surgical operation process in sequence, the training system prompts that the simulation training is completed. After the operator exits the training, the system scores and evaluates each operation process, and automatically generates a simulation training performance evaluation form based on the operation situation; the operator can view the results and operation records through the simulation training performance evaluation form to determine whether his or her technical level has met the surgical requirements.

[0054] Preferably, in step S3, the data of the actual surgical instrument include the position depth, moving speed, moving direction and moving amplitude of the surgical instrument; and these data are used to determine whether the surgical instrument moves too fast or too deep, thereby affecting patient safety; and to determine whether the operator is proficient in using the surgical instrument.

[0055] Preferably, in step S3, the data of the operation action includes the cutting position and the cutting thickness, so as to judge whether the cutting depth meets the surgical requirements, whether important tissues are cut, and whether bleeding occurs when the blood vessels are cut.

[0056] Preferably, in step S4, the simulation training performance evaluation table includes: whether the lesion has been removed as required, whether important tissues have been cut, whether bleeding has occurred, whether bleeding has been stopped as required, the number of errors reported during the operation, the score of each operation process and the total score.

[0057] Preferably, in step S4, the method for generating the simulation training performance evaluation table is as follows:

[0058] S41, importing the scoring table into the system through a conversion program, establishing a one-to-one correspondence between the scoring code and the scoring data, and saving it to the database;

[0059] S42, when entering the simulation training, automatically loading the scoring data related to this training, and recording the scoring code corresponding to the score during the training process;

[0060] S43. When the training is finished, according to the recorded scoring code, the complete information corresponding to the item, such as score, description, etc., is found, and a specific scoring result report is generated.

[0061] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A virtual simulation resection surgery training system, characterized in that: It includes a preset model scene unit, a simulation system configuration unit, a simulation system guidance prompt unit, a simulation system operation unit, a simulation system operation effect unit and a simulation system performance evaluation unit; The preset model scene unit is used to construct a training scene and corresponding operation objects; The simulation system configuration unit is used to load and display training scenes and corresponding operation objects, and select simulated surgical instruments; The simulation system guidance prompt unit is used to provide process prompts, operation prompts and error prompts; The simulation system operation unit is used to operate the simulation instrument of the resectoscope to complete the operation steps of the corresponding surgery in the virtual scene; The simulation system operation effect unit is used to display the operation effect; The simulation system performance evaluation unit is used to automatically generate a simulation training performance evaluation table after the simulation training is completed.

2. A virtual simulation resection surgery training system according to claim 1, characterized in that: In the preset model scene unit, the training scenes include a 3D model of urological resection surgery and a 3D model of gynecological resection surgery; wherein, The operation objects of the urological resection surgery model include: urethra and urethral mucosa mapping module, prostate and layered tissue module, bladder and bladder trigone, right wall, anterior wall, left wall and posterior wall module, interureteral ridge and ureteral orifice module; among them, the prostate and layered tissue module includes: urethral mucosa, hyperplastic layer, surgical capsule and normal prostate tissue; The operating objects of the gynecological electroresectomy surgery model include: the external cervical os, the cervix and cervical canal module, the uterine cavity module, and the bilateral fallopian tube module; wherein the uterine cavity module includes: the endometrial layer, the myometrium and the serosa layer.

3. A virtual simulation resection surgery training system according to claim 1, characterized in that: In the simulation system boot prompt unit, Process prompts are used to provide operation process guidance in the form of text, graphics and voice broadcast according to the training design, so as to help operators complete the training independently; Operation prompts are used to provide specific action prompts during training.

4. A method for implementing the virtual simulation resection surgery training system of claim 1, characterized in that: The following steps are involved: S1. Construction of training scenes and operation objects: Construction of training scenes and corresponding operation objects based on clinical human body structure, setting different lesions at different locations in the training scenes according to different cases, and associating real surgical instruments with the training scenes and corresponding operation objects; S2. Preoperative preparation and selection of simulated surgical instruments: The operator enters the training system and loads the training scenario; then performs relevant preoperative preparation operations according to the prompts and selects simulated surgical instruments; S3, simulated surgical operation: the operator uses a real conventional endoscope to perform examination according to the guidance prompts, and uses the simulated endoscope to check the location and morphology of the lesion on the operation object; the operator then operates the real resectoscope and uses the cutting ring of the simulated resectoscope to cut the lesion tissue in the virtual scene; at the same time, the operator is provided with simulated tactile and visual feedback, and the data of the real surgical instruments and each operation action are collected. For operation errors, the corresponding clinical effects are simulated; S4. Simulation training evaluation: The operator performs open surgical simulation operations according to the guidance prompts; the system makes real-time operation judgments. If there are incorrect operations and operational errors, there will be real-time judgments and error prompts, and prompts on how to solve the current errors. When the operator completes the surgical operation process in sequence, the training system prompts that the simulation training is completed. After the operator exits the training, the system scores and evaluates each operation process, and automatically generates a simulation training performance evaluation table based on the operation situation.

5. The method of a virtual simulation resectoscope surgery training system according to claim 4, characterized in that: In the step S3, the data of the actual surgical instrument include the position depth, movement speed, movement direction and movement amplitude of the surgical instrument; these data are used to determine whether the surgical instrument moves too fast or too deep, thereby affecting the safety of the patient; and to determine whether the operator is proficient in the use of the surgical instrument.

6. The method of a virtual simulation resectoscope surgery training system according to claim 4, characterized in that: In the step S3, the data of the operation action includes the cutting position and the cutting thickness, so as to judge whether the cutting depth meets the surgical requirements, whether important tissues are cut, and whether bleeding occurs when the blood vessels are cut.

7. The method of a virtual simulation resectoscope surgery training system according to claim 4, characterized in that: In the step S4, the simulation training performance evaluation table includes: whether the lesion has been removed as required, whether important tissues have been cut, whether bleeding has occurred, whether bleeding has been stopped as required, the number of errors in the operation process, the score of each operation process and the total score.

8. The method of a virtual simulation resectoscope surgery training system according to claim 4, characterized in that: In the step S4, the method for generating the simulation training performance evaluation table is as follows: S41, importing the scoring table into the system through a conversion program, establishing a one-to-one correspondence between the scoring code and the scoring data, and saving it to the database; S42, when entering the simulation training, automatically loading the scoring data related to this training, and recording the scoring code corresponding to the score during the training process; S43. When the training is finished, the complete information corresponding to the item is found according to the recorded scoring code, and a specific scoring result report is generated.

Images