scholarly journals Optimization-Based Constrained Trajectory Generation for Robot-Assisted Stitching in Endonasal Surgery

Robotics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 27
Author(s):  
Jacinto Colan ◽  
Jun Nakanishi ◽  
Tadayoshi Aoyama ◽  
Yasuhisa Hasegawa
Keyword(s):  
Trajectory Generation ◽  
Robotic System ◽  
Surgical Instruments ◽  
Optimal Time ◽  
Constrained Motion ◽  
Robot Assisted ◽  
Endoscopic View ◽  
Surgical Tool ◽  
Autonomous Mode ◽  
Needle Trajectory

The reduced workspace in endonasal endoscopic surgery (EES) hinders the execution of complex surgical tasks such as suturing. Typically, surgeons need to manipulate non-dexterous long surgical instruments with an endoscopic view that makes it difficult to estimate the distances and angles required for precise suturing motion. Recently, robot-assisted surgical systems have been used in laparoscopic surgery with promising results. Although robotic systems can provide enhanced dexterity, robot-assisted suturing is still highly challenging. In this paper, we propose a robot-assisted stitching method based on an online optimization-based trajectory generation for curved needle stitching and a constrained motion planning framework to ensure safe surgical instrument motion. The needle trajectory is generated online by using a sequential convex optimization algorithm subject to stitching kinematic constraints. The constrained motion planner is designed to reduce surrounding damages to the nasal cavity by setting a remote center of motion over the nostril. A dual concurrent inverse kinematics (IK) solver is proposed to achieve convergence of the solution and optimal time execution, in which two constrained IK methods are performed simultaneously; a task-priority based IK and a nonlinear optimization-based IK. We evaluate the performance of the proposed method in a stitching experiment with our surgical robotic system in a robot-assisted mode and an autonomous mode in comparison to the use of a conventional surgical tool. Our results demonstrate a noticeable improvement in the stitching success ratio in the robot-assisted mode and the shortest completion time for the autonomous mode. In addition, the force interaction with the tissue was highly reduced when using the robotic system.

scholarly journals μRALP and Beyond: Micro-Technologies and Systems for Robot-Assisted Endoscopic Laser Microsurgery

2021 ◽  
Vol 8 ◽  
Author(s):  
Leonardo S. Mattos ◽  
Alperen Acemoglu ◽  
André Geraldes ◽  
Andrea Laborai ◽  
Andreas Schoob ◽  
...  
Keyword(s):  
State Of The Art ◽  
Robotic System ◽  
Surgical Instruments ◽  
Laser Microsurgery ◽  
Robot Assisted ◽  
Current State ◽  
Endoscopic Laser ◽  
Technological Developments ◽  
Surgical Field ◽  
Available Technology

Laser microsurgery is the current gold standard surgical technique for the treatment of selected diseases in delicate organs such as the larynx. However, the operations require large surgical expertise and dexterity, and face significant limitations imposed by available technology, such as the requirement for direct line of sight to the surgical field, restricted access, and direct manual control of the surgical instruments. To change this status quo, the European project μRALP pioneered research towards a complete redesign of current laser microsurgery systems, focusing on the development of robotic micro-technologies to enable endoscopic operations. This has fostered awareness and interest in this field, which presents a unique set of needs, requirements and constraints, leading to research and technological developments beyond μRALP and its research consortium. This paper reviews the achievements and key contributions of such research, providing an overview of the current state of the art in robot-assisted endoscopic laser microsurgery. The primary target application considered is phonomicrosurgery, which is a representative use case involving highly challenging microsurgical techniques for the treatment of glottic diseases. The paper starts by presenting the motivations and rationale for endoscopic laser microsurgery, which leads to the introduction of robotics as an enabling technology for improved surgical field accessibility, visualization and management. Then, research goals, achievements, and current state of different technologies that can build-up to an effective robotic system for endoscopic laser microsurgery are presented. This includes research in micro-robotic laser steering, flexible robotic endoscopes, augmented imaging, assistive surgeon-robot interfaces, and cognitive surgical systems. Innovations in each of these areas are shown to provide sizable progress towards more precise, safer and higher quality endoscopic laser microsurgeries. Yet, major impact is really expected from the full integration of such individual contributions into a complete clinical surgical robotic system, as illustrated in the end of this paper with a description of preliminary cadaver trials conducted with the integrated μRALP system. Overall, the contribution of this paper lays in outlining the current state of the art and open challenges in the area of robot-assisted endoscopic laser microsurgery, which has important clinical applications even beyond laryngology.

scholarly journals USE OF ROBOTS IN DENTISTRY. PART 1. ROBOTIC SYSTEM FOR TRAINING DENTAL STUDENTS AND PROFESSIONALS

2018 ◽  
Vol 22 (6) ◽  
pp. 314-324
Author(s):  
Mikhail Mikhailovich Ukhanov ◽  
A. V Ivashchenko ◽  
I. M Fedyaev ◽  
A. E Yablokov ◽  
I. N Kolganov ◽  
...  
Keyword(s):  
Intraoperative Imaging ◽  
Brain Biopsy ◽  
The United States ◽  
Dental Students ◽  
Robotic System ◽  
Surgical Instruments ◽  
Rational Approach ◽  
Diagnostic Tools ◽  
Robot Assisted

Introduction. The first use of the robot in surgery occurred in 1985. The PUMA 560 robot was used to position a needle for a brain biopsy according to a CT scan [2,4,5]. In 1994, Computer Motion’s surgical robotic system, Automated Endoscopic System for Optimal Positioning (AESOP), was the first in the United States to receive permission for use in surgical practice from the Food and Drug Administration (FDA). Purpose. To analyze the literature and patent sources and propose a preliminary classification of the range of application of robot-assisted systems in medicine. Material and methods. Analyzed and systematized the field of application of robot-assimilated systems (RAS) in medicine, as well as the possibility of using the application of RAS for training specialists. Findings. In our opinion, the development of robot-assisted systems should include the improvement of methods of intraoperative imaging, diagnostic tools, the improvement of surgical instruments, as well as the emergence of new robot-assisted developments. We assume that the future of medical operational technologies is beyond mechatronic devices, but the use of these systems requires a rational approach. The use of this equipment is justified only in the case when it is impossible or significantly difficult to carry out the operation by a doctor.

scholarly journals Robot-assisted Ultrasound-guided Tracking of Anatomical Structures for the Application of Focused Ultrasound

2020 ◽  
Vol 6 (3) ◽  
pp. 123-126
Author(s):  
Michael Unger ◽  
Johann Berger ◽  
Bjoern Gerold ◽  
Andreas Melzer
Keyword(s):  
Focused Ultrasound ◽  
Varicose Veins ◽  
Tracking System ◽  
Tracking Error ◽  
Uterine Fibroids ◽  
High Intensity Focused Ultrasound ◽  
Robot Assisted ◽  
Anatomical Structures ◽  
Surgical Tool ◽  
Custom Made

AbstractHigh intensity focused ultrasound is used as a surgical tool to treat completely non-invasively several diseases. Examples of clinical applications are uterine fibroids, prostate cancer, thyroid nodules, and varicose veins. Precise targeting is key for improving the treatment outcome. A method for an automated, robot-assisted tracking system was developed and evaluated. A wireless ultrasound scanner was used to acquire images of the target, in this case, a blood vessel. The active contour approach by Chan and Vese was used to segment and track while moving the scanner along the target structure with a collaborative robotic arm. The performance was assessed using a custom made Agar phantom. The mean tracking error, which is defined as the remaining distance of the lesion to the images’ centre line, was 0.27 mm ± 0.18 mm.

scholarly journals A Magnetorheological Fluids-Based Robot-Assisted Catheter/Guidewire Surgery System for Endovascular Catheterization

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 640
Author(s):  
Linshuai Zhang ◽  
Shuoxin Gu ◽  
Shuxiang Guo ◽  
Takashi Tamiya
Keyword(s):  
Collision Detection ◽  
Endovascular Procedures ◽  
Force Feedback ◽  
Force Measurement ◽  
Occupational Hazards ◽  
Robot Assisted ◽  
X Ray ◽  
Surgical Safety ◽  
Surgical Tool ◽  
Haptic Cues

A teleoperated robotic catheter operating system is a solution to avoid occupational hazards caused by repeated exposure radiation of the surgeon to X-ray during the endovascular procedures. However, inadequate force feedback and collision detection while teleoperating surgical tools elevate the risk of endovascular procedures. Moreover, surgeons cannot control the force of the catheter/guidewire within a proper range, and thus the risk of blood vessel damage will increase. In this paper, a magnetorheological fluid (MR)-based robot-assisted catheter/guidewire surgery system has been developed, which uses the surgeon’s natural manipulation skills acquired through experience and uses haptic cues to generate collision detection to ensure surgical safety. We present tests for the performance evaluation regarding the teleoperation, the force measurement, and the collision detection with haptic cues. Results show that the system can track the desired position of the surgical tool and detect the relevant force event at the catheter. In addition, this method can more readily enable surgeons to distinguish whether the proximal force exceeds or meets the safety threshold of blood vessels.

Robot-assisted MRI-guided prostatic interventions

Robotica ◽  
2009 ◽  
Vol 28 (2) ◽  
pp. 215-234 ◽  
Author(s):  
Andrew A. Goldenberg ◽  
John Trachtenberg ◽  
Yang Yi ◽  
Robert Weersink ◽  
Marshall S. Sussman ◽  
...  
Keyword(s):  
Thermal Ablation ◽  
Pulse Sequences ◽  
Robot Assisted ◽  
Surgical Ablation ◽  
Image Guided ◽  
Surgical Tool ◽  
Mri Environment ◽  
Focal Ablation ◽  
Mri Guided ◽  
Magnetic Resonance Imaging Mri

SUMMARYThis paper reports on recent progress made toward the development of a new magnetic resonance imaging (MRI)-compatible robot-assisted surgical system for closed-bore image-guided prostatic interventions: thermal ablation, radioactive seed implants (brachytherapy), and biopsy. Each type of intervention will be performed with a different image-guided, robot-based surgical tool mounted on the same MRI-guided robot through a modular trocar. The first stage of this development addresses only laser-based focal ablation. The robot mechanical structure, modular surgical trocar, control architecture, and current stage of performance evaluation in the MRI environment are presented. The robot actuators are ultrasonic motors. A methodology of using such motors in the MRI environment is presented. The robot prototype with surgical ablation tool is undergoing tests on phantoms in the MRI bore. The tests cover MRI compatibility, image visualization, robot accuracy, and thermal mapping. To date, (i) the images are artifact- and noise-free for certain scanning pulse sequences; (ii) the robot tip positioning error is less than 1.2 mm even at positions closer than 0.3 m from the MRI isocenter; (iii) penetration toward the target is image-monitored in near-real time; and (iv) thermal ablation and temperature mapping are achieved using a laser delivered on an optical fiber and MRI, respectively.

scholarly journals How can robot-assisted surgery provide value for money?

2021 ◽  
Vol 3 (1) ◽  
pp. e000042
Author(s):  
Sejal Patel ◽  
Maroeska M Rovers ◽  
Michiel J P Sedelaar ◽  
Petra L M Zusterzeel ◽  
Ad F T M Verhagen ◽  
...  
Keyword(s):  
Current System ◽  
Health Effect ◽  
Cost Effective ◽  
Robotic System ◽  
Utilization Rate ◽  
Value For Money ◽  
Robot Assisted ◽  
Surgical Interventions ◽  
Interactive Tool ◽  
Robot Assisted Surgery

ObjectivesTo develop an interactive tool that estimates what potential benefits are needed for the robot to provide value for money when compared with endoscopic or open surgical interventions.DesignA generic online interactive tool was developed to analyze the (health) effects needed to compensate for the additional costs of using a surgical robotic system from a healthcare perspective. The application of the tool is illustrated with a hypothetical new surgical robotic platform. A synthesis of evidence from different sources was used combined with interviews with surgeons.SettingFlexible tool that can be adapted to flexible settings.ParticipantsAny hospital patient group for which robotic, endoscopic or open surgical procedures may be considered as appropriate treatment alternatives (eg, urology, gynecology, and so on).InterventionRobotically assisted surgical interventions.ComparatorEndoscopic or open surgical interventions.Main outcome measuresThresholds of how much (health) effect is needed for robot-assisted surgery to provide value for money and to become cost-effective.ResultsThe utilization rate of the surgical robotic system and a reduction in complications appeared to be important aspects in determining the value for money. To become cost-effective, it was deemed important for new surgical robotic systems to have added clinical benefit and become less costly than the current system.ConclusionsThis paper and its assisting interactive tool can be used by clinicians, researchers, and policymakers to gain insight in the benefit needed to provide value for money when using a (new) surgical robotic system or, when the effects are known or can be estimated, to assess the value for money for a specific indication. For robotic surgery to provide most value for money, we recommend assessing for each indication whether the necessary effects seem achievable.

Design of a novel robotic system for minimally invasive surgery

2017 ◽  
Vol 44 (3) ◽  
pp. 288-298 ◽  
Author(s):  
Yue Ai ◽  
Bo Pan ◽  
Yili Fu ◽  
Shuguo Wang
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Control Method ◽  
Animal Experiments ◽  
Robotic System ◽  
Robot Assisted ◽  
Content Type ◽  
Hand Eye Coordination ◽  
Control System Architecture

Purpose Robot-assisted system for minimally invasive surgery (MIS) has been attracting more and more attentions. Compared with a traditional MIS, the robot-assisted system for MIS is able to overcome or reduce defects, such as poor hand-eye coordination, heavy labour intensity and limited motion of the instrument. The purpose of this paper is to design a novel robotic system for MIS applications. Design/methodology/approach A robotic system with three separate slave arms for MIS has been designed. In the proposed robot, a new mechanism was designed as the remote centre motion (RCM) mechanism to restrain the movement of instrument or laparoscope around the incision. Moreover, an improved instrument without coupling motion between wrist and grippers was developed to enhance its manipulability. A control system architecture was also developed, and an intuitive control method was applied to realize hand-eye coordination of the operator. Findings For the RCM mechanism, the workspace was analyzed and the positioning accuracy of the remote centre point was tested. The results show that the RCM mechanism can be applied to MIS. Furthermore, the master-slave trajectory tracking experiments reveal that slave robots are able to follow the movement of the master manipulators well. Finally, the feasibility of the robot-assisted system for MIS is proved by performing animal experiments successfully. Originality/value This paper offers a novel robotic system for MIS. It can accomplish the anticipated results.

scholarly journals A Cooperative Human-Robot Interface for Constrained Manipulation in Robot-Assisted Endonasal Surgery

2020 ◽  
Vol 10 (14) ◽  
pp. 4809 ◽  
Author(s):  
Jacinto Colan ◽  
Jun Nakanishi ◽  
Tadayoshi Aoyama ◽  
Yasuhisa Hasegawa
Keyword(s):  
Interface Design ◽  
Human Head ◽  
Surgical Instruments ◽  
Invasive Technique ◽  
Robot Arm ◽  
Robot Assisted ◽  
Endonasal Surgery ◽  
Endoscopic Endonasal ◽  
Tool Positioning ◽  
Simultaneous Control

Endoscopic endonasal surgery (EES) is a minimally invasive technique for removal of pituitary adenomas or cysts at the skull base. This approach can reduce the invasiveness and recovery time compared to traditional open surgery techniques. However, it represents challenges to surgeons because of the constrained workspace imposed by the nasal cavity and the lack of dexterity with conventional surgical instruments. While robotic surgical systems have been previously proposed for EES, issues concerned with proper interface design still remain. In this paper, we present a cooperative, compact, and versatile bimanual human-robot interface aimed to provide intuitive and safe operation in robot-assisted EES. The proposed interface is attached to a robot arm and holds a multi-degree-of-freedom (DOF) articulated forceps. In order to design the required functionalities in EES, we consider a simplified surgical task scenario, with four basic instrument operations such as positioning, insertion, manipulation, and extraction. The proposed cooperative strategy is based on the combination of force based robot control for tool positioning, a virtual remote-center-of-motion (VRCM) during insertion/extraction tasks, and the use of a serial-link interface for precise and simultaneous control of the position and the orientation of the forceps tip. Virtual workspace constraints and motion scaling are added to provide safe and smooth control of our robotic surgical system. We evaluate the performance and usability of our system considering reachability, object manipulability, and surgical dexterity in an anatomically realistic human head phantom compared to the use of conventional surgical instruments. The results demonstrate that the proposed system can improve the precision, smoothness and safety of the forceps operation during an EES.

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