In this paper, soft tissue is modeled by a mass-spring-damper system and tissue deformations under the compression of surgical instruments are simulated. For this purpose, soft tissue confined in a cubic plastic mold is studied using a nonlinear viscoelastic model. Displacements resulting from probe insertions are measured and modeled for use in robotic surgery. Data is collected on bovine sirloin using the Instron hardness tester. The model's dynamic equations are obtained in the form of ordinary differential equations. The external force is considered as the input and the resulting deformation as the output of the model. Simulation results are compared with laboratory findings, and the nonlinear model's unknown parameters are estimated. The threshold force and displacement before the tearing of the soft tissue are respectively determined by analyzing the force-time and displacement-time diagrams obtained for the test samples.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11701-013-0444-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Transperitoneal versus low anterior access single-port pyeloplasty: surgical and functional outcomes from a tertiary referral center.
Minerva Urol Nephrol
December 2024
Department of Urology, University of Illinois at Chicago, Chicago, IL, USA.
Background: Transperitoneal approach to robot-assisted pyeloplasty (RAP) have been preferred in the last decades because of the use of multi-port robotic platforms. However, this approach is linked to notable issues, such as pneumoperitoneum and lateral decubitus position, which is associated with potential soft tissues injuries, and it is a time-consuming procedure. Single-port (SP) platform was introduced to potentially address these issues.
View Article and Find Full Text PDF[Model selection for determination of primary stability of dental implants in experimental studies].
Stomatologiia (Mosk)
January 2025
Central Research Institute of Dental and Maxillofacial Surgery, Moscow, Russia.
Objective: Systematic review of literature on the pre-clinical studies of dental implantation in different models by finding out data about primary stability.
Materials And Methods: PubMed, NCBI, Wiley Online Library, MBPI, Elibrary systems were used for search.
Results: Based on the literature review of the described animal species dogs have the most similar bone structure to humans but their usage is complicated by ethics and law reasons.
The Study Aims: To evaluate and compare the growth of gingiva around dental implants following the use of collagen matrices and connective tissue grafts (CTG).
Materials And Methods: The study included 80 study participants, who were divided into four groups based on the type of material used to enhance gingival thickness. Two groups utilized collagen matrices, Fibro-Gide and FibroMatrix as materials, while the other two groups utilized CTG obtained from the hard palate or tubercle area of the maxilla as controls.
Perianal mass as the debut of metastatic pulmonary neoplasia.
Rev Esp Enferm Dig
January 2025
General and Digestive Surgery. Coloproctology Unit, Hospital Universitario Donostia.
A 56-year-old male smoker presented to the Emergency Department with a painful mass in the left ischiorectal fossa, which had been present for 2 months without any other symptoms. On examination, a hard, violet-colored mass was observed, with an ulcerated central area. Blood tests were normal, and the abdominal-pelvic CT scan showed multiple hypervascular intra-abdominal masses and soft tissue lesions.
View Article and Find Full Text PDFPrevalence and Risk Factors for Leg Length Discrepancy in Children With Idiopathic Clubfoot Treated With Ponseti Method.
J Pediatr Orthop
January 2025
Department of Orthopaedics, Washington University School of Medicine, St. Louis, MO.
Introduction: Clubfoot is at times associated with other lower extremity abnormalities, such as leg length discrepancy (LLD). Initial studies in patients treated with extensive soft tissue release (STR) have estimated that LLD is prevalent in 9% to 11% of children with idiopathic clubfoot. However, Ponseti-style serial casting has since replaced STR as the preferred clubfoot treatment method.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!