Surgical simulation of pediatric laparoscopic dismembered pyeloplasty: Reproducible high-fidelity animal-tissue model

2021 ◽  
Author(s):  
T. Jhala ◽  
S. Zundel ◽  
P. Szavay
Keyword(s):  
Surgical Simulation ◽  
Animal Tissue ◽  
High Fidelity ◽  
Tissue Model

Surgical simulation: an animal tissue model for training in therapeutic and diagnostic bronchoscopy

1999 ◽  
Vol 113 (2) ◽  
pp. 149-151 ◽  
Author(s):  
Bhaskar Ram ◽  
Matthew Oluwole ◽  
Robin L. Blair ◽  
Rodney Mountain ◽  
Peta Dunkley ◽  
...  
Keyword(s):  
Animal Model ◽  
Foreign Bodies ◽  
Surgical Simulation ◽  
Animal Tissue ◽  
Psychomotor Skills ◽  
Tissue Model ◽  
Diagnostic Bronchoscopy ◽  
Convenient Means ◽  
Therapeutic Exercises ◽  
Simulation Exercises

AbstractA series of surgical simulation exercises has been developed using an animal model to allow trainees to practise basic instrument handling and develop psychomotor skills in bronchoscopy, without risk to patients. A pig model was found to be most suitable. After suitable preparation the model can be used for diagnostic and therapeutic exercises in bronchoscopy, including lavage, biopsy and the removal of various foreign bodies. The model is a safe, inexpensive and convenient means of bronchoscopic training for otolaryngology trainees. For the trained specialist who has to remove bronchial foreign bodies infrequently, the model is a useful way of maintaining skills.

scholarly journals Effect of time complexities and variation of mass spring model parameters on surgical simulation

2014 ◽  
Vol 9 (4) ◽  
Author(s):  
Salina Sulaiman ◽  
Tan Sing Yee ◽  
Abdullah Bade
Keyword(s):  
Soft Tissue ◽  
Human Liver ◽  
Soft Tissues ◽  
Surgical Simulation ◽  
Model Parameters ◽  
Spring Model ◽  
Surgical Simulator ◽  
Tissue Model ◽  
Mass Spring Model ◽  
Mass Spring

Physically based models assimilate organ-specific material properties, thus they are suitable in developing a surgical simulation. This study uses mass spring model (MSM) to represent the human liver because MSM is a discrete model that is potentially more realistic than the finite element model (FEM). For a high-end computer aided medical technology such as the surgical simulator, the most important issues are to fulfil the basic requirement of a surgical simulator. Novice and experienced surgeons use surgical simulator for surgery training and planning. Therefore, surgical simulation must provide a realistic and fast responding virtual environment. This study focuses on fulfilling the time complexity and realistic of the surgical simulator. In order to have a fast responding simulation, the choice of numerical integration method is crucial. This study shows that MATLAB ode45 is the fastest method compared to 2nd ordered Euler, MATLAB ode113, MATLAB ode23s and MATLAB ode23t. However, the major issue is human liver consists of soft tissues. In modelling a soft tissue model, we need to understand the mechanical response of soft tissues to surgical manipulation. Any interaction between haptic device and the liver model may causes large deformation and topology change in the soft tissue model. Thus, this study investigates and presents the effect of varying mass, damping, stiffness coefficient on the nonlinear liver mass spring model. MATLAB performs and shows simulation results for each of the experiment. Additionally, the observed optimal dataset of liver behaviour is applied in SOFA (Simulation Open Framework Architecture) to visualize the major effect.

scholarly journals A New Hybrid Viscoelastic Soft Tissue Model based on Meshless Method for Haptic Surgical Simulation

2013 ◽  
Vol 7 (1) ◽  
pp. 116-124 ◽  
Author(s):  
Yidong Bao ◽  
Dongmei Wu ◽  
Zhiyuan Yan ◽  
Zhijiang Du
Keyword(s):  
Soft Tissue ◽  
Stress Relaxation ◽  
Surgical Simulation ◽  
Viscoelastic Model ◽  
Stress Strain ◽  
Tissue Model ◽  
The Real ◽  
Strain Stress ◽  
Formula Derivation ◽  
Stability And Accuracy

This paper proposes a hybrid soft tissue model that consists of a multilayer structure and many spheres for surgical simulation system based on meshless. To improve accuracy of the model, tension is added to the three-parameter viscoelastic structure that connects the two spheres. By using haptic device, the three-parameter viscoelastic model (TPM) produces accurate deformationand also has better stress-strain, stress relaxation and creep properties. Stress relaxation and creep formulas have been obtained by mathematical formula derivation. Comparing with the experimental results of the real pig liver which were reported by Evren et al. and Amy et al., the curve lines of stress-strain, stress relaxation and creep of TPM are close to the experimental data of the real liver. Simulated results show that TPM has better real-time, stability and accuracy.

scholarly journals Middle-Ear Microsurgery Simulation to Improve New Robotic Procedures

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Guillaume Kazmitcheff ◽  
Yann Nguyen ◽  
Mathieu Miroir ◽  
Fabien Péan ◽  
Evelyne Ferrary ◽  
...  
Keyword(s):  
Middle Ear ◽  
Surgical Simulation ◽  
Middle Ear Surgery ◽  
High Fidelity ◽  
Interactive Simulation ◽  
Surgical Simulator ◽  
Ear Surgery ◽  
Anatomical Structures ◽  
Training Tool ◽  
New Procedures

Otological microsurgery is delicate and requires high dexterity in bad ergonomic conditions. To assist surgeons in these indications, a teleoperated system, called RobOtol, is developed. This robot enhances gesture accuracy and handiness and allows exploration of new procedures for middle ear surgery. To plan new procedures that exploit the capacities given by the robot, a surgical simulator is developed. The simulation reproduces with high fidelity the behavior of the anatomical structures and can also be used as a training tool for an easier control of the robot for surgeons. In the paper, we introduce the middle ear surgical simulation and then we perform virtually two challenging procedures with the robot. We show how interactive simulation can assist in analyzing the benefits of robotics in the case of complex manipulations or ergonomics studies and allow the development of innovative surgical procedures. New robot-based microsurgical procedures are investigated. The improvement offered by RobOtol is also evaluated and discussed.

Restructured animal tissue model for training in laparoscopic anti-reflux surgery

1994 ◽  
Vol 3 (2) ◽  
pp. 77-80 ◽  
Author(s):  
F. Carter ◽  
E. Russell ◽  
P. Dunkley ◽  
A. Cuschieri
Keyword(s):  
Animal Tissue ◽  
Tissue Model

Characterization of the Biomechanical Properties of the Lower Esophagus for Surgical Simulation

2006 ◽  
Vol 326-328 ◽  
pp. 835-838 ◽  
Author(s):  
Chang Mok Choi ◽  
Hyon Yung Han ◽  
Jung Kim ◽  
Joo No Cheong
Keyword(s):  
Surgical Simulation ◽  
Animal Experiments ◽  
Three Dimensional ◽  
Estimation Algorithm ◽  
Medical Personnel ◽  
Biomechanical Properties ◽  
Fe Model ◽  
Lower Esophagus ◽  
Tissue Properties ◽  
Tissue Model

In this work a method to characterize soft tissue properties for mechanical modeling is presented. Attention is especially focused on developing a model of the lower esophagus to be used in a surgical simulation, which shows a promise as a training method for medical personnel. The viscoelastic properties of the lower esophageal junction are characterized using data from animal experiments and an inverse FE parameter estimation algorithm. Utilizing the assumptions of quasilinear- viscoelastic theory, the viscoelastic and hyperelastic material parameters are estimated to provide a physically based simulation of tissue deformations in real time. To calibrate the parameters to the experimental results, a three dimensional FE model that simulates the forces at the indenter and an optimization program that updates new parameters and runs the simulation iteratively are developed. It was possible to reduce the time and computation resources by decoupling the viscoelastic part and elastic part in a tissue model. The comparison of the simulation and the experimental behavior of pig esophagus are presented to provide validity to the tissue model using the proposed approach.

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