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
Organ‐mounted robots adhere to the surface of a mobile organ as a platform for minimally invasive interventions, providing passive compensation of physiological motion. This approach is beneficial during surgery on the beating heart. Accurate localization in such applications requires accounting for the heartbeat and respiratory motion. Previous work has described methods for modeling...
Background
In robot‐assisted fracture reduction systems, the fine alignment of the fractured bone and its path planning are still of issues that need to be resolved.
Methods
A novel linear guidance constraints (LGC) controller guides a robot along the shortest path to align a distal fracture segment and a proximal one. In addition, the surgeon can modify the path whenever s/he wants.
Results...
Background
Patient‐to‐image registration is required for image‐guided surgical navigation, but marker‐based registration is time consuming and is subject to manual error. Markerless registration is an alternative solution to avoid these issues.
Methods
This study designs a calibration board and proposes a geometric calibration method to calibrate the near‐infrared tracking and structured light...
Background
Manual paired‐point registration for navigated ENT‐surgery is prone to human errors; automatic surface registration is often caught in local minima.
Methods
Anatomical features of the human occiput are integrated into an algorithm for surface registration. A vector force field is defined between the patient and operating room datasets; registration is facilitated through gradient‐based...
Background
Recent studies report safety and effectiveness of robotic hepatectomy. In present study, we describe our initial experiences with robotic hepatectomy, focusing on left‐side procedures.
Methods
A retrospective review was conducted of 13, 10, and 11 consecutive patients who underwent robotic, laparoscopic, and open left‐side hepatectomy by the single surgeon.
Results
There were no significant...
Background
Evidence has suggested that robotic system helps perform more major liver resections. However, the required table‐side surgeon has remained a concern because of the uncertain performance and the incomplete control of console surgeon.
Methods
Data were reviewed for consecutive 333 robotic liver resections, of which 56 patients underwent left liver resection with the usual setting, and...
Background
An essential requirement for performing robotic‐assisted surgery on a freely beating heart is a prediction algorithm that can estimate the future heart trajectory.
Method
Heart motion, respiratory volume (RV) and electrocardiogram (ECG) signal were measured from two dogs during thoracotomy surgery. A comprehensive multimodality prediction algorithm was developed based on the multivariate...
Background
Open surgical consoles widely employed in minimally invasive surgery have better ergonomics than closed consoles. To enhance surgical robots' ergonomics, operational efficiency, and safety, an effective master‐slave motion alignment model should be established.
Methods
The kinematic model of the robot system based on laparoscopic camera coordinate system is built in the first place....
Background
Being a proven method in trauma and spine surgery, intraoperative 3D imaging (CBCT) has intrinsic deficits in difficult anatomy and with artifacts because of metal implants. The purpose of this study was to evaluate the use of intraoperative computed tomography (iCT) in acetabular surgery.
Methods
Ten cases of acetabular fractures that were operated with intraoperative use of the mobile...
Background
Conversion to open during minimally invasive liver resection has a high rate. To identify the reasons to convert could help in defining a strategy to decrease the event “conversion.”
Methods
A systematic review has been performed. Our large series of robotic hepatic resections were analyzed and included in the review.
Results
Fifty papers were selected and carefully evaluated in full...
Background: Intraoperative ultrasound scanning induces deformation on the tissue in the absence of a feedback modality, which results in a 3D tumour reconstruction that is not directly representative of real anatomy.
Methods: A biomechanical model with different feedback modalities (haptic, visual, or auditory) was implemented in a simulation environment. A user study with 20 clinicians was performed...
Objectives
To develop an accurate intraoperative method to estimate changes in intraarticular contact pressures during high tibial osteotomy (HTO).
Methods
Changes in knee alignment and pressure were monitored in real time in seven cadaver specimens that received HTO. Intraarticular contact pressure (N/mm2) in each knee compartment was estimated based on extraarticularly acquired data (leg alignment,...
Background: Augmented reality (AR) allows the surgeon to represent holographic patient‐specific anatomical information and surgical instruments in the physical world. To correctly superimpose virtual and physical objects, a hand‐eye (HE) calibration method for mapping the virtual and physical spaces was proposed.
Methods: Mathematical relationships between the virtual camera and the physical space...
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.