Download or read book Digital Endoscope Design written by Dennis C. Leiner and published by . This book was released on 2015 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Miniature optical systems required for digital endoscopes present unique challenges in lens design and manufacture. This Spotlight provides a tutorial on the key optical design considerations required for video endoscope systems. The text compares different types of endoscopes and discusses their advantages and disadvantages. Key areas of clinical importance to the medical industry are stressed. The book also presents endoscope specifications, international standards, and several design examples.

Download or read book Digital Endoscope Design written by Dennis C. Leiner and published by . This book was released on 2016 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Miniature optical systems required for digital endoscopes present unique challenges in lens design and manufacture. This Spotlight provides a tutorial on the key optical design considerations required for video endoscope systems. The text compares different types of endoscopes and discusses their advantages and disadvantages. Key areas of clinical importance to the medical industry are stressed. The book also presents endoscope specifications, international standards, and several design examples.

Download or read book Optical Design for Biomedical Imaging written by Rongguang Liang and published by SPIE-International Society for Optical Engineering. This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designing an efficient imaging system for biomedical optics requires a solid understanding of the special requirements of the optical systems for biomedical imaging and the optical components used in the systems. However, a lack of reference books on optical design (imaging and illumination) for biomedical imaging has led to some inefficient systems. This book fills the gap between biomedical optics and optical design by addressing the fundamentals of biomedical optics and optical engineering, and biomedical imaging systems. The first half provides a brief introduction to biomedical optics and then covers the fundamentals of optics, optical components, light sources, detectors, optical imaging system design, and illumination system design. This also includes important issues related to biomedical imaging, such as autofluorescence from optical materials. The second half of the text covers various biomedical imaging techniques and their optical systems, along with design examples.

Download or read book Smith s Textbook of Endourology written by Arthur D. Smith and published by PMPH-USA. This book was released on 2007 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endourology is a dynamic subspecialty involving closed, controlled manipulation within the genitourinary tract. In the past decade the creative efforts of many urologists, radiologists, and engineers have vastly expanded endoscopic technique, to the great benefit of patients with stones, obstruction, cancer, diverticula, cysts, adrenal disease, varices, and diseases of the bladder. This definitive text addresses every aspect of endourologic procedure including methods of access, operative techniques, complications, and postoperative care. The reader is taken, step-by-step, through cutaneous surgery, ureteroscopy, extracorporeal shock wave lithotripsy, laparoscopy, and lower urinary tract procedures. The principles and function of state-of-the-art endourologic instruments are outlined for each procedure. The authorship reads like a Who’s Who in endodurology . The breadth and depth of their experience is evident throughout the text.

Download or read book Design and Manufacturing of a Disposable Endoscope and an Overtube Using 3 D Printing Technology written by Anay Mahesh Pandit and published by . This book was released on 2017 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even after cleaning and disinfecting an endoscope, the possibility of contamination is high and can have negative effects on the health of patients. U.S. Centers for Disease Control (CDC) reports that there are about two million infected victims yearly and about 20,000 succumb to this infection. In recent news, several deaths at the UCLA Ronald Reagan Medical Center have been linked endoscope bacteria contamination. Thus, there is a need for designing an endoscope which will reduce or eliminate the chances of these deadly bacteria entering the body. 3-D Printing has been rapidly advancing and can be used as a potential solution for this problem. 3-D printing is being used in printing human tissues and also has a history of printing biocompatible materials, including medical devices. This provides a chance of manufacturing a biocompatible, programmable and disposable endoscope that functions in the same way as present endoscopes, without the risk of contamination. The aim of this project is to design and manufacture a prototype of a 3-D printable, disposable endoscope to eliminate infection rates using different actuation techniques. The preliminary design of endoscope is an active device which can be actuated using various actuation techniques and can be guided through an obstacle course resembling a human colon.

Download or read book History of Endoscopy written by Matthias A. Reuter and published by . This book was released on 1999 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principles of Flexible Endoscopy for Surgeons written by Jeffrey M. Marks and published by Springer Science & Business Media. This book was released on 2013-09-10 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written entirely by surgical endoscopists, Principles of Flexible Endoscopy for Surgeons presents a comprehensive overview of past, present, and future flexible gastrointestinal endoscopic techniques, with a focus on educating surgeons who may or may not already have the skills to perform flexible endoscopy. In addition to the endoscopic management of surgical issues, the volume describes the role of surgery in the management of endoscopic complications. Basic as well as advanced flexible endoscopic techniques are presented in both a didactic and visual mode, with representative endoscopic images and video clips. Recent endoscopic advancements which are not routinely a core component of surgical training programs are also covered in detail. Extensively illustrated with endoscopic images and accompanied by a DVD, Principles of Flexible Endoscopy for Surgeons is a valuable resource for surgeons on all facets of flexible endoscopy.

Download or read book Endorobotics written by Luigi Manfredi and published by Academic Press. This book was released on 2022-01-04 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book comprises three parts. The first part provides the state-of-the-art of robots for endoscopy (endorobots), including devices already available in the market and those that are still at the R&D stage. The second part focusses on the engineering design; it includes the use of polymers for soft robotics, comparing their advantages and limitations with those of their more rigid counterparts. The third part includes the project management of a multidisciplinary team, the health cost of current technology, and how a cost-effective device can have a substantial impact on the market. It also includes information on data governance, ethical and legal frameworks, and all steps needed to make this new technology available. Focuses on a new design paradigm for endorobots applications Provides a unique collection of engineering, medical and management contributions for endorobotics design Describes endorobotics, starting from available devices in both clinical use and academia

Download or read book Smith s Textbook of Endourology written by Glenn Preminger and published by John Wiley & Sons. This book was released on 2012-03-12 with total page 1911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying DVD-ROM, in pocket at front of v. 1, contains ... "video clips referenced in the text."--DVD-ROM label.

Download or read book A Prototype Design of Wireless Capsule Endoscope written by Yawen Chan and published by . This book was released on 2005 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neuroendoscopy written by Spyros Sgouros and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a result of technological improvements, neuroendoscopy is now used in the treatment of many more patients, enabling the performance of previously unavailable operations with low complication rates and rapid patient recovery. This book presents the distilled experience of world experts in this evolving field. Current applications in a wide variety of settings are explained in detail and likely future developments are identified. In addition, the available neuroendoscopic instruments are reviewed and the results of international trials and collaborative studies, presented. This book will fully acquaint the reader with the breadth and depth of available neuroendoscopy techniques and their impressive therapeutic potential. It should serve as the reference book on neuroendoscopy for the next 10 years.

Download or read book Design and Implementation of DSP based Magnetic Control System for Capsule Endoscope written by Ibrahim Khalaf Mohammed Al-Lehaby and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Early detection methods are key to reducing morbidity rates from digestive tract cancer which is currently one of the fastest growing cancers in the World. Capsule endoscopes (CEs) are a new technology that can be used to improve early detection of the gastrointestinal (GI) tract disorder. The device integrates the technologies such as image processing, optoelectronic engineering, information communication, and biomedical engineering. The capsule is the size and shape of a pill and contains an optoelectronic camera, antenna, transmitter, battery and optoelectronic illuminating light emitting diodes (LEDs). The small size of these devices enables them to offer many advantages over conventional endoscopes such as accessibility to the entire intestine and minimising the risk of perforation, particularly for patients with difficult anatomy (e.g. post-operative scar tissue). Currently used devices are passive and can only follow the natural transit of the intestines, and hence there is considerable interest in methods of controlled actuation for these devices. In this thesis, a novel actuation system based on magnetic levitation is designed, developed and implemented, utilizing a small permanent magnet embedded within the capsule and an arrangement of digitally controlled electromagnets outside the body. The proposed approach is that the magnet can be moved and oriented by DC magnetic force and torque produced by coils placed outside of the human body, with a suitable position feedback sensor enabling closed-loop control. Theoretical analyses of the proposed actuation system are presented which model the magnetic field, force and torque exerted by electromagnetic coil on the embedded magnet. Based on the distribution of the magnetic field, an optimal geometry for the coils is proposed in order to achieve a levitation distance which is realistic for the inspection of the GI tract. Two types of systems are investigated in the thesis, namely single-input single-output (SISO) and multi-input multi-output (MIMO), and the dynamics of these systems are modelled in state space form and hence linear controllers are designed for capsule actuation. The controllers are simulated using Matlab/ Simulink tools to realize the mathematical analysis of the system, and then implemented digitally in real-time using Texas Instruments (TI) TMS320F2812 Digital Signal Processor (DSP) to validate the proposed actuation system. In the SISO system, a linear one degree of freedom (1DOF) proportionalintegral- derivative (PID) controller is designed to move the inserted magnet in the vertical dimension within an area around the operating point and to maintain it at a desired position. A realistic simulation model is designed and implemented to evaluate the proposed controller. Simulation results have shown that the controller is able to successfully hold the embedded magnet in the desired position. For practical validation, the PID controller is implemented in real-time on the DSP system, where pulse width modulation (PWM) is generated to control the coil current, and Hall effect sensors are used for position feedback. Experimental results are obtained under step and square wave input demand. In the proposed system, high frequency noise on the position sensor is initially rejected by hardware implementation of resistor capacitor-low pass filter (RC-LPF) circuit. The accuracy of the position feedback is increased by calibrating the DSP's on-chip analogue-digital converter (ADC) in order to reduce conversion error due to inherent gain and offset errors. To further reduce the influence of the position feedback noise, an average of ten repeated samples based on mean filter is implemented by the DSP in order to reduce the influctuation of the sensor reading. The tracking performance of the actuation system based on two Hall effect sensors on the opposite coil's poles is investigated under step trajectory input. In an improved actuation system, position feedback is provided by using an AC magnetic field to obtain the capsule position information, decoupling this from the DC actuation field. The noise of the position feedback in the improved system is reduced by replacing the PWM current drive with a linear power amplifier driven from a digital to analogue converter (DAC), hence reducing AC interference. Positioning sensor noise was found to be further reduced by implementing digital filtering based on a coherent detector using the DSP, without increasing response time. The performance of the actuation system using these position sensors is compared based on settling time, overshoot, steady-state error, and control input parameters in order to validate the proposed improvement in the position feedback. The experimental results have shown that the controller based on both sensing strategies satisfactory control of the magnet's position. However, the response of the system based on AC position sensing has the shortest settling time, smallest overshoot value and steady-state error. In the MIMO system, several linear controllers such as pole placement (PP), Entire Eigenstructure Assignment (EEA), and linear Quadratic regulator (LQR) techniques are designed and their tracking performances are compared. Simulation results have shown that, based on acceptable control inputs, the LQR controller has the fastest response with minimal overshoot value and steady state error. However, the LQR controller based on 2DOF is unable to maintain stable control of the magnet due to the insufficient position feedback from the two coil sensors. Specifically, it is not possible to achieve a stable 2D system since the orientation angle of the magnet is not resolvable. Therefore, the position feedback is improved by obtaining the device position and orientation information from a pair of 3-axis orthogonal coils. A realistic simulation model for the 3DOF LQR controller is designed and implemented to evaluate the developed system. Simulation results have shown that this controller is can achieve the necessary stability. In conclusion, based on the results from the 1D control system, the thesis shows that the DC magnetic field, which is used for capsule movement, can be also used to provide the controller acceptable position feedback. However, the use of AC magnetic field for positioning purpose provides more accurate position information. In order to implement 2DOF control system successfully, two 3-axis orthogonal coil sensors are considered which are used to provide the actuation algorithm with more accurate feedback of position and orientation information.

Download or read book Ultra Low Power Integrated Circuit Design written by Nianxiong Nick Tan and published by Springer Science & Business Media. This book was released on 2013-10-23 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the design of CMOS circuits for ultra-low power consumption including analog, radio frequency (RF), and digital signal processing circuits (DSP). The book addresses issues from circuit and system design to production design, and applies the ultra-low power circuits described to systems for digital hearing aids and capsule endoscope devices. Provides a valuable introduction to ultra-low power circuit design, aimed at practicing design engineers; Describes all key building blocks of ultra-low power circuits, from a systems perspective; Applies circuits and systems described to real product examples such as hearing aids and capsule endoscopes.

Download or read book Endoscopic Imaging Techniques and Tools written by Vani J.A. Konda and published by Springer. This book was released on 2016-08-09 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive, state-of-the art update of the field of endoscopic imaging. The approaches to novel imaging and cutting edge techniques are demonstrated in the context of gastrointestinal endoscopic imaging, with discussions on both techniques in use and exploration of novel imaging platforms on the horizon in gastrointestinal endoscopy. Designed to convey practical information on these innovative approaches in a user-friendly manner, each chapter focuses on the principals of the technology under discussion, highlights key clinical indications, demonstrates the equipment and set up required, covers the basic technique, and reviews complication profiles, and comparison to standard or alternative approaches. Chapters also provides the expert’s tips and tricks for the reader to more practically and easily translate the information provided into safe and successful practice. The volume is also accompanied by videos demonstrating highlighting certain techniques. Written by experts in the field, Endoscopic Imaging Techniques and Tools is a valuable resource for clinicians, trainees, and researchers interested in the field of endoscopic imaging.

Download or read book CMOS Biomicrosystems written by Krzysztof Iniewski and published by John Wiley & Sons. This book was released on 2011-10-14 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book will address the-state-of-the-art in integrated Bio-Microsystems that integrate microelectronics with fluidics, photonics, and mechanics. New exciting opportunities in emerging applications that will take system performance beyond offered by traditional CMOS based circuits are discussed in detail. The book is a must for anyone serious about microelectronics integration possibilities for future technologies. The book is written by top notch international experts in industry and academia. The intended audience is practicing engineers with electronics background that want to learn about integrated microsystems. The book will be also used as a recommended reading and supplementary material in graduate course curriculum.

Download or read book Gastroenterological Endoscopy written by Michael B. Wallace and published by Georg Thieme Verlag. This book was released on 2018-01-24 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highly Commended by the BMA Medical Book Awards for Internal Medicine! Written and edited by internationally renowned specialists, the third edition of Gastroenterological Endoscopy covers the entire spectrum of diagnostic and therapeutic procedures for the upper and lower GI tract while providing the latest overview of GI disorders. A great wealth of high-resolution photographs provides the visual information needed to confidently assess and diagnose mucosal lesions of the entire digestive tract. Significant advances in the field—both medical and technical—since the last edition are covered in comprehensive detail. Key Features: New panel of top international editors, continuing the tradition of excellence, depth, and breadth as originated by founding editors Classen, Tytgat, and Lightdale; list of contributing authors is a "who's who" of GI endoscopy Coverage of newest, advanced tools and techniques: gastric-POEMS, submucosal tunnel endoscopic resection (STER), lumen-apposing metal stents, "over-the-scope" clips, and much more More than 750 exquisite images Gastroenterological Endoscopy, third edition, surely deserves a prominent place in any complete endoscopy reference collection.

Download or read book Core Analysis written by Colin McPhee and published by Elsevier. This book was released on 2015-12-10 with total page 853 pages. Available in PDF, EPUB and Kindle. Book excerpt: Core Analysis: A Best Practice Guide is a practical guide to the design of core analysis programs. Written to address the need for an updated set of recommended practices covering special core analysis and geomechanics tests, the book also provides unique insights into data quality control diagnosis and data utilization in reservoir models. The book's best practices and procedures benefit petrophysicists, geoscientists, reservoir engineers, and production engineers, who will find useful information on core data in reservoir static and dynamic models. It provides a solid understanding of the core analysis procedures and methods used by commercial laboratories, the details of lab data reporting required to create quality control tests, and the diagnostic plots and protocols that can be used to identify suspect or erroneous data. Provides a practical overview of core analysis, from coring at the well site to laboratory data acquisition and interpretation Defines current best practice in core analysis preparation and test procedures, and the diagnostic tools used to quality control core data Provides essential information on design of core analysis programs and to judge the quality and reliability of core analysis data ultimately used in reservoir evaluation Of specific interest to those working in core analysis, porosity, relative permeability, and geomechanics