Local deformation for soft tissue simulation

Omar, Mohd Nadzeri; Zhong, Yongmin; Smith, Julian A.; Gu, Chengfan

doi:10.1080/21655979.2016.1197712

Cited by 9 publications

(6 citation statements)

References 15 publications

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“…22 Additionally, the abdominal tissue layers naturally have some local strain due to muscle contractions or mechanical loading, but the low-level electrical stimulation should not induce harmful local strains. 26 Future studies would be required to determine any deformations created in the mesh due to mechanical loading of the piezo material via ultrasound waves.…”

Section: Discussionmentioning

confidence: 99%

Computational analysis of electrical stimulation to promote tissue healing for hernia repair at varying mesh placement planes

Mosier,

Berbel,

Friis

2024

J Biomater Appl

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Development of a tear in the abdominal wall allowing for protrusion of intra-abdominal contents is known as a hernia. This can cause pain, discomfort, and may need surgical repair. Hernias can affect people of any age or demographic. In the USA, over 1 million hernia repair procedures are performed each year. During these surgeries, it is common for a mesh to be utilized to strengthen the repair. Different techniques allow for the mesh to be placed in different anatomical planes depending on hernia location and approach. The locations are onlay, inlay, and sublay, with sublay being split into retromuscular or preperitoneal with sublay being the most commonly used. The use of an electrically active hernia repair mesh is of interest to model as electrical stimulation has been shown to improve soft tissue healing which could reduce recurrence rates. Theoretical 3D COMSOL models were built to evaluate the varying electric fields of an electrically active hernia repair mesh at each of the different anatomical planes. Three voltages were chosen (10, 20, and 30 mV) for the study to simulate a low-level electrical signal and the electric field from a piezoelectric material at the tissue layers surrounding the mesh construct. Based on the model outputs, the optimal mesh placement location was the sublay-retromuscular as this location had the highest electric field values in the connective tissues and rectus abdominis muscle, which are the primary tissues of concern for the healing process and a successful repair.

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Section: Discussionmentioning

confidence: 99%

Computational analysis of electrical stimulation to promote tissue healing for hernia repair at varying mesh placement planes

Mosier,

Berbel,

Friis

2024

J Biomater Appl

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“…Further, the determination of the penetration depth does not consider material properties. Omar et al [38] reported a local deformation method based on MSM. Based on elastic theory, this method estimates the stress distribution in soft tissues according to a depth from the contact surface subject to an external load.…”

Section: ) Mass-spring Modelmentioning

confidence: 99%

Deformable Models for Surgical Simulation: A Survey

Zhang

Zhong

2018

IEEE Rev. Biomed. Eng.

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This paper presents a survey of the state-of-the-art deformable models studied in the literature, with regard to soft tissue deformable modeling for interactive surgical simulation. It first introduces the challenges of surgical simulation, followed by discussions and analyses on the deformable models, which are classified into three categories: the heuristic modeling methodology, continuum-mechanical methodology, and other methodologies. It also examines linear and nonlinear deformable modeling, model internal forces, and numerical time integrations, together with modeling of soft tissue anisotropy, viscoelasticity, and compressibility. Finally, various issues in the existing deformable models are discussed to outline the remaining challenges of deformable models in surgical simulation.

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“…Stamatia et al, 32 proposes tissue deformation recovery by providing useful feedback on instrument forces exerted on the tissue. Nadzeri et al, 33 focuses on soft tissue simulation in real time using new local deformation methodology. This method evaluates the deformation range using stress evaluation method based on elastic theory.…”

Section: Volumetricmentioning

confidence: 99%

Untitled

2019

IJPSR

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Most of the simulation methods for soft tissue modeling involve tetrahedral meshes which is quite complex and takes much computation time. Instead, this work attempts to make use of delaunay triangulated mesh that consists of unique mathematical properties suited for simulating soft tissues. Although, triangulated mesh is not so complex yet effective in producing elements of good quality. It even reduces computation time compared to the tetrahedral mesh by providing more geometric flexibility. In virtual surgery, it is essential to model the layers of soft tissues of human skin to perform a simulation of deformation and removal of cells. Based on this the multilayered model of skin prototype is developed in a pre-process and used for interactive modeling. This work presents a simple method for performing real-time collision detection in a virtual surgery environment. Also shows the efficient computation of collisions between the scalpel and delaunay triangulated mesh using a local collision detection function. The framework incorporates qualitative results obtained towards the simulation of surgical deformation and removal of soft tissues using appropriate algorithms. It also uses real-time texture mapping to enhance the visual realism.

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Local deformation for soft tissue simulation

Cited by 9 publications

References 15 publications

Computational analysis of electrical stimulation to promote tissue healing for hernia repair at varying mesh placement planes

Computational analysis of electrical stimulation to promote tissue healing for hernia repair at varying mesh placement planes

Deformable Models for Surgical Simulation: A Survey

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