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.
Background
Commercialised laparoscopic surgical robotic systems require a large operating room and can only be used in large hospitals. If the robotic system is to be used in a small‐ or medium‐sized hospital, the occupied volume must be reduced further.
Methods
In this paper, we propose a bed‐mounted system that can be installed in a general operating room. Furthermore, we proposed a novel positioning...
Background
Intraocular surgery and reconstructive surgery are challenging microsurgery procedures that require two types of motion: precise motion and larger motion. To effectively perform the requisite motion using a robot, it is necessary to develop a manipulator that can adjust the scale of motion between precise motion and less precise, yet larger motion.
Aims
In this paper, we propose a novel...
Background
Studies have been conducted on slave‐specific master devices with a similar kinematic structure to the slave to enhance intuitiveness. However, for the four‐degrees of freedom (DOFs) slave of a flexible endoscopic surgery robot, only four DOFs in the master device causes low ergonomic performance.
Methods
To enhance ergonomic performance, a second yaw joint was added as a redundant joint...
Background
Despite its high lesion accessibility and versatility, endoscopic platforms have suffered from designing flexible manipulators with high payload capability sufficient to perform advanced endoscopic procedures.
Methods
A flexible robotic platform, K‐FLEX, has been developed with a design of 17 mm in overall diameter. To overcome the shape distortion and deflection in payload handling,...
Background
The tendon‐sheath mechanism provides flexibility but degrades the task performance of the flexible endoscopic robot because of the inherent backlash hysteresis problem. Previous studies have only focused on reducing backlash hysteresis. The goal of this study is to identify the backlash hysteresis criteria of surgical tool bending joints to maintain efficient surgical performance.
Methods...
Background
In robotic surgical systems, commercial master devices have limitations owing to insufficient workspace and lack of intuitiveness. To overcome these limitations, a remote‐center‐of‐motion (RCM) master manipulator was proposed.
Methods
The feasibility of the proposed RCM structure was evaluated through kinematic analysis using a conventional serial structure. Two performance comparison...
Background
Despite its evident clinical benefits, single‐incision laparoscopic surgery (SILS) imposes inherent limitations of collision between external arms and inadequate triangulation because multiple instruments are inserted through a single port at the same time.
Methods
A robot platform appropriate for SILS was developed wherein an elbowed instrument can be equipped to easily create surgical...
In robotics, robotic arms should be smaller, less expensive, and able to demonstrate a better performance, in order to be utilized in various fields. However, expensive actuators and speed reducers are required to generate sufficient force at the end effector after overcoming the gravitational torque of robotic arm. Robotic arms become compact and cost effective if the gravitational torque can be...
To solve problems due to absence of force feedback and provide a better medical environment for surgeons, using haptic feedback is proposed. A precondition to apply the haptic feedback is to measure the force however it is inconvenient to attach sensors to the end-tip of surgical instrument. Sensors can't endure high temperature and high pressure while surgical instrument is being sterilized. As a...
A correct diagnosis and a proper treatment may yield a rapid and simple cure for benign paroxysmal positional vertigo (BPPV). Although the Gufoni maneuver is widely used to treat apogeotropic horizontal-canal BPPV (HC-BPPV), few studies have clarified the relationship between the speed and intensity of maneuver execution and successful canalith reposition. To evaluate the effect of accelerated execution...
Flexible endoscope has widely been used to investigate interior of hollow organ or abdominal cavity. As technology of medical device advances, the area of endoscopy becomes much wider. Currently it is not limited to diagnosis or biopsy, but is expanded to complicate technique or even surgery, for example, NOTES (Natural Orifice Transluminal Endoscopie Surgery). In that NOTES makes no external incision...
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.