The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In vitreoretinal practice, controlled tremor-free motion and limitation of applied forces to the retina are two highly desired features. This study addresses both requirements with a new integrated system: a force-sensing motorized micro-forceps combined with an active tremor-canceling handheld micromanipulator, known as Micron. The micro-forceps is a 20 Ga instrument that is mechanically decoupled...
Robotic systems have the potential to assist vitre-oretinal surgeons in extremely difficult surgical tasks inside the human eye. In addition to reducing hand tremor and improving tool positioning, a robotic assistant can provide assistive motion guidance using virtual fixtures, and incorporate real-time feedback from intraocular force sensing ophthalmic instruments to present tissue manipulation forces,...
This paper presents an innovative approach of utilising visual feedback to determine physical interaction forces with soft tissue during Minimally Invasive Surgery (MIS). This novel force sensing device is composed of a linear retractable mechanism and a spherical visual feature. The sensor mechanism can be adapted to endoscopic cameras used in MIS. As the distance between the camera and feature varies...
Rapidly deployable surgical robots pose minimal interruption to surgical workflow and require minimal setup time and equipment to support deployment. This paper explores the concept of rapid deployment through the use of in-vivo sensory information to adapt a pre-operative surgical plan and to increase robustness against registration and misalignment errors during robot deployment. Robotic insertion...
Active constraints are high-level control algorithms providing software-generated force feedback from virtual environments. When applied to surgery, they can assist surgeons in performing complex tasks by guiding their navigation pathways along narrow, possibly convoluted, surgical trajectories. This paper presents a method to generate concave tubular constraints implicitly from pre- or intra-operative...
We present a hap tic force-profile acquisition and display system for a surgical device that will aid medical students in developing and learning surgical skills for future procedures. The goal of this study is to extend the benefits of using a low-cost surgical simulator by capturing subtle hand movements and providing realistic force feedback, enabling more realistic interaction during virtual reality...
Over 20 million tooth extractions are performed each year in the United States (2). During this procedure, the surgeon uses a periotome to sever the ligaments anchoring the tooth to the jaw. However, this technique has proven to be traumatic to the patient's hard and soft tissue and can result in longer recovery time. Damage to the surrounding tissue also prolongs any further dental treatment and...
The purpose of this project is to develop a puncture proof surgical retraction device to aid in surgery, particularly abdominal/thoracic surgery. The client, Dr. Adam D Fox of the division of trauma surgery and critical care at Rutgers University School of Medicine asked for a surgical device to prevent common workplace needle stick injuries that occur during suturing due to the close proximity of...
The paradigm of 21st century is clearly different from 20th century. This is shift from mass production based on standardization to small number and wide variety of production. To take the paradigm shift, any production system should have force control providing high adaptability inside. This gives the difficulty to the motion controller where the position control with very high stiffness and the...
In a robot-assisted tele-operation, the operator uses a hand controller to maneuver a tool attached to the robot's end-effector. The performance in such tele-operation may depend on perceptual information about the operating site as well as the design of the hand-controller. A hand-controller that provides haptic information as force feedback during the interaction in tele-operation may be beneficial...
This paper describes the design and development of a miniature 3-axis distal force sensor which can be applied in tissue palpation during minimally invasive surgery (MIS). The sensing principle is based on resistive sensing method that utilizes gauges to measure the strain of a flexible platform when exposed to a force. A novel tripod structure is designed and optimized as the flexible platform, it...
Objective: To evaluate Lauge-Hansen classification on the diagnosis and treatment of ankle fractures. Methods: From April 2008 to June 2011, and following ethical approval of our research, patients with ankle fractures admitted at our second orthopaedics department were enrolled. All patients were followed up for a minimum of 8 months (8∼46 with a mean of 27 months). Trauma mechanism and American...
This paper presents a design and development of Veress Needle Insertion Force Sensing System, and a Veress Needle Insertion Robotic System for acquiring force data for soft tissue insertion. The study reports force data from veress needle insertions, measured to use in our Robot-Assisted Surgical System. The main goal of this work is to develop a virtual reality robotic surgical system which can provide...
In this paper, we present a smart handheld surgical tool with tactile feedback to help microsurgery. This device consists of force sensors attached to the tool tip and tactile displays on the position of the fingerhold. The sensor is capacitive one and measures not only the magnitude of force, but also the direction of force. The sensor can measure 9N of lateral forces along x-y-z direction. The tactile...
This paper presents a new robotic system that assists surgeons in manipulating the endoscope during nasal surgical procedures. The presented robotic system has four degrees of freedom (DOF) arm with a wire-driven double parallelogram mechanism to control the three orientation angles and the insertion depth of the endoscope in the nasal cavity in a decoupled manner. The double parallelogram mechanism...
Bone milling is one of the most common operations in various kinds of orthopedical surgeries, such as laminectomy surgery. For safety issue and efficacy, it is very important to recognize the states in milling operation. In this paper, an approach to recognize the states of bone milling is proposed, which identify the cortical tissue layer and cancellous tissue layer. Hilbert-Huang Transform (HHT)...
This paper proposes a novel technique for applying virtual fixtures in a changing environment. The main targeted application is robotic beating heart surgery, which enables the surgeon to operate directly on a beating heart. Using a motion compensation framework, the motion of the heart surface is stabilized in a virtual space, which is presented to the surgeon to operate in. Consequently, the fixture...
As a result of the rapid spreading of stereoscopy in the consumer market, three-dimensional (3D) vision systems are replacing two-dimensional devices. A fast growing technology in the 3D visualization systems market is multi-views autostereoscopic displays (ADs). However, these devices have not yet found a direct application in minimally invasive surgery (MIS), as it is really challenging to embed...
This paper proposes a teleoperated dual-user system incorporating Virtual Fixtures (VFs) that allows concurrent performance of a robotic surgical task by an expert and a trainee. In order to guide the trainee through the procedure, an adaptive VF is created in the trainee's workspace according to the motion generated by the expert who is performing the surgery at the same time. The VF gets adaptively...
Robotic assistants and smart surgical instruments have been developed to overcome many significant physiological limitations faced by vitreoretinal surgeons, one of which is lack of force perception below 7.5 mN. This paper reports the development of a new force sensor based on fiber Bragg grating (FBG) with the ability not just to sense forces at the tip of the surgical instrument located inside...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.