Feasibility of using an led-probe in third-space endoscopy: a clinical study (original) (raw)
Related papers
Experimental Evaluation and Analysis of LED Illumination Source for Endoscopy Imaging
International Journal of Integrated Engineering, 2022
In surgery, minimally invasive techniques (MIT) are generally safer than open surgery and typically faster recovery. This biological photographic surgery has increased interest in LED-based treatments. LEDs have now become essential in medical and dental technology. But the demands placed on these devices are extreme. Minimal size, large and application-specific colour rendering index, efficient temperature control, usability, and excellent disinfection opportunities are all important. An endoscopy is a process where the doctor uses specialized instruments to look and operate on the body's internal parts like organs and vessels. It allows experts to view disease within the body without making a large body cut. Endoscopy surgery requires an average of 45 minutes. It involves the use of an external illumination source. Considering intense illuminance and colour rendering index (Ra) greater than 95, Xenon, Halogen, and Metal halide lamps are recently used as an illumination source in minimally invasive techniques. These sources emit a broad visible frequency spectrum,
Development and evaluation of a light-emitting diode endoscopic light source
Advanced Biomedical and Clinical Diagnostic Systems X, 2012
Light-emitting diode (LED) based endoscopic illumination devices have been shown to have several benefits over arclamp systems. LEDs are energy-efficient, small, durable, and inexpensive, however their use in endoscopy has been limited by the difficulty in efficiently coupling enough light into the endoscopic light cable. We have demonstrated a highly homogenised lightpipe LED light source that combines the light from four Luminus LEDs emitting in the red, green, blue and violet using innovative dichroics that maximise light throughput. The light source spectrally combines light from highly divergent incoherent sources that have a Lambertian intensity profile to provide illumination matched to the acceptance numerical aperture of a liquid light guide or fibre bundle. The LED light source was coupled to a standard laparoscope and performance parameters (power, luminance, colour temperature) compared to a xenon lamp. Although the total illuminance from the endoscope was lower, adjustment of the LEDs' relative intensities enabled contrast enhancement in biological tissue imaging. The LED light engine was also evaluated in a minimally invasive surgery (MIS) box trainer and in vivo during a porcine MIS procedure where it was used to generate 'narrowband' images. Future work using the violet LED could enable photodynamic diagnosis of bladder cancer.
Gastrointestinal Endoscopy, 2020
Background and aim: In recent years, the linked color imaging (LCI) system has been developed as a new endoscopic imaging modality 1. LCI uses band laser (wavelength 410 AE 10 nm) in addition to white-light laser. Therefore, the LCI mode helps emphasize vascular and surface structures and color differences while maintaining a bright vision. However, the utility of LCI for visualizing superficial nonampullary duodenal epithelial tumors (SNADETs) is unclear. Thus, the present study aimed to evaluate the visibility of LCI with SNADETs. Patients and methods: We retrospectively evaluated 44 SNADETs with 44 patients (M:F Z 31:13, mean age Z 66.0 AE 9.4). All lesions were examined with LASEREO system (FUJIFILM, Tokyo, Japan) and subsequently removed via endoscopic resection. Lesions background were as follows: mean tumor size (mm) (9.0 AE 6.0), location [bulb/2nd portion (oral side of papilla)/2nd portion (anal side of papilla)/3rd portion/4th portion Z 5/14/23/ 2], morphology (Is
The advancing art and science of endoscopy
The American Journal of Surgery, 2005
Flexible endoscopy continues to advance encompassing treatment of a variety of diseases traditionally managed surgically. This review describes and evaluates many of these new endoscopic approaches with an eye toward the future. Gastroesophageal reflux disease is now treated with several endoscopic, non-operative techniques. A procedure using radiofrequency energy delivered by a peroral catheter with small needles inserted into the wall of the esophagus causes collagen deposition and ablates transient lower esophageal sphincter relaxation, both of which reduce reflux. With this treatment, Ͼ80% of patients will reduce or stop their medication for reflux. Trials involving new injectable materials show promise with a 75-80% improvement in heartburn-related quality-of-life scores and reduced medication use. Endoscopic suture and stapling devices restore the antireflux barrier with sutures that create a pleat or plication at the gastroesophageal junction. Early results indicated that 62-74% of patients had significant improvement. Long-term results are not available for any of these new techniques and there seems to be a drop off in effectiveness over time. Gastrointestinal bleeding has been more effectively managed with the recent introduction of small clips and detachable snares to control bleeding vessels. Banding and sclerotherapy for variceal bleeding has all but eliminated urgent operation for that diagnosis. In the biliary-pancreas realm, endoscopic management of pancreatic pseudocysts, stenting of pancreatic or biliary strictures and fistulae have reduced operative indications in those disease processes. Pseudocyst drainage involves creation of a transenteric communication between the pseudocyst and the stomach or duodenum. Complete cyst resolution without recurrence can be expected in 85% of patients. While endoscopic pallation of malignant biliary strictures has been accepted for years, experience with endoscopic management of iatrogenic strictures indicates that it may serve as an alternative option without surgery in many patients. Enteric stenting using metallic self-expanding stents in the esophagus, duodenum, and colon allows alleviation of obstruction without surgery for palliantation and in the colon may relieve obstruction to avoid colostomy prior to an elective resection. On the horizon stands the flexible endoscopic route to the abdominal cavity via the transgastric route and the promise of combined endoscopic-laparoscopic approaches to complex abdominal problems. General surgeons should rekindle their interest in flexible endoscopy or risk losing entire categories of disease to other specialties or to a small specialized group of endoscopic surgeons.
Enteroscopy, defined as direct visualization of the small bowel with the use of a fiberoptic or capsule endoscopy, has progressed considerably over the past several years. The need for endoscopic access to improve diagnosis and treatment of small bowel disease has led to the development of novel technologies one of which is non-invasive, the video capsule, and a type of invasive technique, the device-assisted enteroscopy. In particular, the device-assisted enteroscopy consists then of three different types of instruments all able to allow, in skilled hands, to display partially or throughout its extension (if necessary) the small intestine. Newer devices, double balloon, single balloon and spiral endoscopy, are just entering clinical use. The aim of this article is to review recent advances in small bowel enteroscopy, focusing on indications, modifications to improve imaging and techniques, pitfalls, and clinical applications of the new instruments. With new technologies, the trials and tribulations of learning new endo-scopic skills and determining their role in the diagnosis and treatment of small bowel disease come. Identification of small bowel lesions has dramatically improved. Studies are underway to determine the best strategy to apply new enteroscopy technologies for the diagnosis and management of small bowel disease, particularly obscure bleeding. Vascular malformations such as angiectasis and small bowel neoplasms as adenocarcinoma or gastrointestinal stromal tumors. Complete enteroscopy of the small bowel is now possible. However, because of the length of the small bowel, endoscopic examination and therapeutic maneuvers require significant skill, radiological assistance, the use of deep sedation with the assistance of the anesthetist. Prospective randomized studies are needed to guide diagnostic testing and therapy with these new endoscopic techniques.
New Challenges in Gastrointestinal Endoscopy
Gastroenterology, 2009
This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broad-fi casting, reproduction on microfilms or in other ways, and storage in data banks. The use of registered fi names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, fi that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Product liability: The publisher can give no guarantee for information about drug dosage and application thereof contained in this book. In every individual case the respective user must check its accuracy by consulting other pharmaceutical literature.
Advances in diagnostic endoscopy
Medicine, 2007
ABSTRACT Detection of potentially subtle abnormalities during diagnostic endoscopy is limited by the quality of the equipment, the skill of the endoscopist, and patient comfort. Rapid advances are occurring in endoscopic technology. Miniature probes offering confocal endomicroscopy, fluorescence, elastic scattering and Raman spectroscopy can all now be used with standard endoscopes. Novel endoscopes such as ‘SpyGlass’ and the ‘Third Eye Retroscope’ have been developed to visualize new regions of the gastrointestinal tract, while the development of thinner more flexible endoscopes, scope-guide systems, colon and pH capsules, and virtual colonoscopy aim to improve patient comfort and satisfaction. While impressive, many of these techniques are still confined to the research arena. The most significant recent advances in routine diagnostic endoscopy are the introduction of high-resolution endoscopes and high-definition TV as well as the introduction of the National Bowel Cancer Screening programme to diagnose and treat colon cancer at a much earlier stage.
Endoscopy - Innovative Uses and Emerging Technologies
2015
Gastrointestinal endoscopy (GIE) is a procedure for diagnosis and treatment of gastrointestinal tract abnormalities. This procedure requires some forms of anesthesia. The goal of procedural anesthesia is safe, effective control of pain and anxiety, as well as an appropriate degree of memory loss or reduced awareness. Generally, the majority of GIE procedures are performed by using topical anesthesia and intravenous sedation. General anesthesia is carried out in long and invasive procedures such as endoscopic retrograde cholangiopancreatography, endoscopic ultrasound, and small bowel enteroscopy, as well in patients with history of failed sedation or drug and substance abuse, uncooperative or pediatric patients, and patients with cardiorespiratory system instabilities. The appropriate anesthetic agents for GIE procedures could be short acting, rapid onset with little adverse effects and also improved safety profiles. To date, the new anesthetic drugs and monitoring equipments for safety and efficacy are available. The present review focuses on pre-anesthetic assessment, anesthetic drugs used, monitoring practices, and post-anesthesia care for anesthesia innovations in GIE procedures.