scholarly journals Improving Precision in Navigating Laparoscopic Surgery Instruments toward a Planar Target Using Haptic and Visual Feedback

2016 ◽  
Vol 3 ◽  
Author(s):  
Thomas Howard ◽  
Jérôme Szewczyk
Keyword(s):  
Laparoscopic Surgery ◽  
Visual Feedback ◽  
Planar Target

scholarly journals Automatic positioning of surgical instruments during laparoscopic surgery with robots using automatic visual feedback

2002 ◽  
Vol 12 ◽  
pp. 75-83
Author(s):  
A. Krupa ◽  
M. de Mathelin ◽  
C. Doignon ◽  
J. Gangloff ◽  
G. Morel ◽  
...  
Keyword(s):  
Laparoscopic Surgery ◽  
Visual Feedback ◽  
Surgical Instruments ◽  
Automatic Positioning

Haptic Rendering for Laparoscopic Surgery Simulation & Related Studies

2008 ◽  
pp. 636-645 ◽  
Author(s):  
Ryan McColl ◽  
Ian Brown ◽  
Cory Seligman ◽  
Fabian Lim ◽  
Amer Alsaraira
Keyword(s):  
Laparoscopic Surgery ◽  
Visual Feedback ◽  
Haptic Feedback ◽  
Sensory System ◽  
Vital Role ◽  
Tissue Manipulation ◽  
Anatomical Objects ◽  
Surgery Simulator ◽  
Sense Of Touch ◽  
Human Sense

This project concerns the application of haptic feedback to a virtual reality laparoscopic surgery simulator. It investigates the hardware required to display haptic forces, and the software required to generate realistic and stable haptic properties. A number of surgery-based studies are undertaken using the developed haptic device. The human sense of touch, or haptic sensory system, is investigated in the context of laparoscopic surgery, where the long laparoscopic instruments reduce haptic sensation. Nonetheless, the sense of touch plays a vital role in navigation, palpation, cutting, tissue manipulation, and pathology detection in surgery. The overall haptic effect has been decomposed into a finite number of haptic attributes. The haptic attributes of mass, friction, stiction, elasticity, and viscosity are individually modeled, validated, and applied to virtual anatomical objects in visual simulations. There are times in surgery when the view from the camera cannot be depended upon. When visual feedback is impeded, haptic feedback must be relied upon more by the surgeon. A realistic simulator should include some sort of visual impedance. Results from a simple tissue holding task suggested the inclusion of haptic feedback in a simulator aids the user when visual feedback is impeded.

Design of Steerable Endoscopes to Improve the Visual Perception of Depth During Laparoscopic Surgery

2004 ◽  
Vol 126 (1) ◽  
pp. 2-5 ◽  
Author(s):  
Paul Breedveld ◽  
Shigeo Hirose
Keyword(s):  
Laparoscopic Surgery ◽  
Visual Perception ◽  
Abdominal Wall ◽  
Visual Feedback ◽  
Degrees Of Freedom ◽  
Bending Stiffness ◽  
Small Incision ◽  
Torsion Stiffness ◽  
4 Degrees Of Freedom

Visual feedback during laparoscopic surgery is provided by an endoscope with a camera that is inserted through a small incision in the abdominal wall. The incision restricts the endoscope movements to 4 degrees of freedom (DOF), making it impossible to observe organs from different sides. This paper describes two 6 DOF steerable endoscopes that contain a new spatial parallelogram-mechanism to transform the handgrip movements into movements of the steerable tip. Part of the mechanism is a new kind of spring that combines high torsion stiffness with a low bending stiffness. The endoscopes and the spring have been applied for two international patents.

Clinical Success Using the Audio-Visual Feedback Training for Cluttering

2019 ◽  
Vol 4 (6) ◽  
pp. 1589-1594
Author(s):  
Yvonne van Zaalen ◽  
Isabella Reichel
Keyword(s):  
Visual Feedback ◽  
Clinical Success ◽  
Pause Duration ◽  
Digital Audio ◽  
Male Adolescents ◽  
Feedback Training ◽  
Positive Effects ◽  
Speech Monitoring ◽  
Adolescents And Adults

Purpose Among the best strategies to address inadequate speech monitoring skills and other parameters of communication in people with cluttering (PWC) is the relatively new but very promising auditory–visual feedback (AVF) training ( van Zaalen & Reichel, 2015 ). This study examines the effects of AVF training on articulatory accuracy, pause duration, frequency, and type of disfluencies of PWC, as well as on the emotional and cognitive aspects that may be present in clients with this communication disorder ( Reichel, 2010 ; van Zaalen & Reichel, 2015 ). Methods In this study, 12 male adolescents and adults—6 with phonological and 6 with syntactic cluttering—were provided with weekly AVF training for 12 weeks, with a 3-month follow-up. Data was gathered on baseline (T0), Week 6 (T1), Week 12 (T2), and after follow-up (T3). Spontaneous speech was recorded and analyzed by using digital audio-recording and speech analysis software known as Praat ( Boersma & Weenink, 2017 ). Results The results of this study indicated that PWC demonstrated significant improvements in articulatory rate measurements and in pause duration following the AVF training. In addition, the PWC in the study reported positive effects on their ability to retell a story and to speak in more complete sentences. PWC felt better about formulating their ideas and were more satisfied with their interactions with people around them. Conclusions The AVF training was found to be an effective approach for improving monitoring skills of PWC with both quantitative and qualitative benefits in the behavioral, cognitive, emotional, and social domains of communication.

1168: Wound Complications after Hand-Assisted Laparoscopic Surgery (HALS)

2005 ◽  
Vol 173 (4S) ◽  
pp. 317-317 ◽  
Author(s):  
Jeffrey S. Montgomery ◽  
Willam K. Johnston ◽  
J. Stuart Wolf
Keyword(s):  
Laparoscopic Surgery ◽  
Wound Complications

899: Hans Christian Jacobaeus the Pioneer of Laparoscopic Surgery

2005 ◽  
Vol 173 (4S) ◽  
pp. 243-243
Author(s):  
Martin Hatzinger ◽  
Jasmin K. Badawi ◽  
Axel Häcker ◽  
Stefan Kamp ◽  
Achim Lusch
Keyword(s):  
Laparoscopic Surgery

The Impact of Visual Feedback Type on the Mastery of Visuo-Motor Transformations

2012 ◽  
Vol 220 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Sandra Sülzenbrück
Keyword(s):  
Empirical Research ◽  
Visual Feedback ◽  
Closed Loop ◽  
Motor Planning ◽  
Visual Input ◽  
Closed Loop Control ◽  
Loop Control ◽  
Feedback Type ◽  
Effective Use ◽  
The Impact

For the effective use of modern tools, the inherent visuo-motor transformation needs to be mastered. The successful adjustment to and learning of these transformations crucially depends on practice conditions, particularly on the type of visual feedback during practice. Here, a review about empirical research exploring the influence of continuous and terminal visual feedback during practice on the mastery of visuo-motor transformations is provided. Two studies investigating the impact of the type of visual feedback on either direction-dependent visuo-motor gains or the complex visuo-motor transformation of a virtual two-sided lever are presented in more detail. The findings of these studies indicate that the continuous availability of visual feedback supports performance when closed-loop control is possible, but impairs performance when visual input is no longer available. Different approaches to explain these performance differences due to the type of visual feedback during practice are considered. For example, these differences could reflect a process of re-optimization of motor planning in a novel environment or represent effects of the specificity of practice. Furthermore, differences in the allocation of attention during movements with terminal and continuous visual feedback could account for the observed differences.

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