Relevant bibliographies by topics / Endoscopes et endoscopie

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  2. Dissertations / Theses
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Academic literature on the topic 'Endoscopes et endoscopie'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Endoscopes et endoscopie"

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Shkorbotun, Ya V. "POTENTIALS OF MINI-INVASIVE ENDORHINOSURGERY TAKING INTO ACCOUNT THE ACTUAL BOUNDARIES OF THE FIELD OF VIEW OF MODERN ENDOSCOPES." Актуальні проблеми сучасної медицини: Вісник Української медичної стоматологічної академії 20, no. 4 (December 30, 2020): 232–36. http://dx.doi.org/10.31718/2077-1096.20.4.232.

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One of the predetermining factors to perform minimally invasive rhinosurgery successfully is the searching for optimal surgical access areas, the choice of which at present mostly depends on the visualization capabilities of endoscopic devices. The angular vision is one of the important factors for planning and performing endonasal interventions on the anterior maxillary sinus. A large viewing angle allows surgeons to expand the potentials of minimally invasive access, reduce the need to replace endoscopes with different angles during the intervention and improve the quality of the surgical procedure. The purpose of this study was to improve the method for selecting surgical access to the maxillary sinus, taking into the optical axis and the actual size of the field of view provided by the endoscope. The simulation of the process of selecting the optimal option for access to the maxillary sinus on the basis of our own method of predicting the visualization of the lumen in the sinus was performed. To determine the actual viewing angle of the endoscope, we compared the application of the standard methodology and the approach we elaborated. 3 endoscopes with a 70° optical axis orientation were examined; the studies were performed three times. We found that the results of determining the boundaries of the field of view according to our technique and to the method of Wang Q. et al. (2017) did not differ significantly, that indicates the comparable accuracy of both methods. With the declared identical characteristics of all three endoscopes, we revealed the magnitude of the field of view differed quite significantly (by a maximum of 8.7°). Moreover, the value of the viewing angle in all samples of endoscopes tested was greater than that provided by the manufacturer for standard endoscopes (60 °). The average duration of measuring the magnitude of the field of view of the endoscope by the method we proposed took 25.3 ± 3.2 s that was significantly faster than by the method of Wang Q. et al. (2017), 83.7 ± 2.0 s P≤0.05). We should also stress on the greater convenience of carrying out examinations according to our method. When assessing the potential of the maxillary sinus visualization, it is necessary to take into account not only the individual anatomical features of a patient, but also the actual optical characteristics of endoscopes. The device we designed for determining the boundaries of the field of view of endoscopes is easy to manufacture, requires less time for testing and enables to determine the actual viewing angles of the endoscope quicker and more effectively. Actual optical characteristics of endoscopes may differ from the standards.
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Vos, M., Judith Kwakman, and Marco Bruno. "Risk Estimate of Duodenoscope-Associated Infections in The Netherlands." Infection Control & Hospital Epidemiology 41, S1 (October 2020): s436—s437. http://dx.doi.org/10.1017/ice.2020.1102.

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Background: The likelihood of endoscopy-associated infections (EAIs) is often referenced from a paper published in 1993 by Kimmery et al1 in which a risk of 1 exogenous infection for every 1.8 million endoscopies (0.00006%) is proclaimed. Even though Ofstead et al2 pointed out in 2013 that this was at least an underestimation by 6-fold because of erroneous assumptions and mathematical errors, the original calculation is still often referred to. In the past decade, multiple outbreaks of multidrug-resistant microorganisms (MDROs) related to contaminated duodenoscopes have been reported worldwide. This leads to the assumption that the former risk calculation is indeed incorrect. Objective: We calculated the duodenoscope-associated infection (DAI) risk for the Dutch ERCP practice. Methods: We searched and consolidated all Dutch patients reported in the literature to have suffered from a clinical infection linked to a contaminated duodenoscope between 2008 and 2018. From a national database, the number of ERCPs performed per year in The Netherlands were retrieved. Actual numbers were available from 2012 to 2018. Numbers from 2008 to 2011 were estimated and assumed to be equal to 2012. Results: In 2008–2018, 3 MDRO outbreaks in Dutch hospitals were reported in the literature, with 21 patients suffering from a clinical infection based on a microorganism proven to be transmitted by a duodenoscope. In that period, ∼203,500 ERCP procedures were performed. Hence, for every 9,690 procedures, 1 patient developed a clinically relevant infection (DAI risk, 0.010%). Conclusions: The risk of developing a DAI is at least 30–180 times higher than the risks that were previously reported for all types of endoscopy-associated infections. Importantly, the current calculated risk of 0.010% constitutes a bare minimum risk of DAI because endoscope-related infections are underreported. Apart from DAI risk, a patient is also at risk of becoming colonized with a microorganism through contaminated endoscopes but without developing symptoms of clinical infection. These data call for consorted action of medical practitioners, industry, and government agencies to minimize and ultimately eliminate the risk of exogenous endoscope-associated infections and contamination. As a first step, the FDA recently recommended that healthcare facilities and manufacturers begin transitioning to duodenoscopes with disposable components.3Funding: NoneDisclosures: None
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Shakya, Dipesh, Arun KC, and Ajit Nepal. "A Comparative Study of Endoscopic versus Microscopic Cartilage Type I Tympanoplasty." International Archives of Otorhinolaryngology 24, no. 01 (November 4, 2019): e80-e85. http://dx.doi.org/10.1055/s-0039-1693139.

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Abstract Introduction The use of endoscope is rapidly increasing in otological and neuro-otological surgery in the last 2 decades. Middle ear surgeries, including tympanoplasty, have increasingly utilized endoscopes as an adjunct to or as a replacement for the operative microscope. Superior visualization and transcanal access to diseases normally managed with a transmastoid approach are touted as advantages with the endoscope. Objectives The present study aimed to compare the outcomes of endoscopic and microscopic cartilage tympanoplasty (Type I) Methods This was a retrospective comparative study of 70 patients (25 males and 45 females) who underwent type I tympanoplasty between March 2015 and April 2016. The subjects were classified into 2 groups: endoscopic tympanoplasty (ET, n = 35), and microscopic tympanoplasty (MT, n = 35). Tragal cartilage was used as a graft and technique used was cartilage shield tympanoplasty in both groups. Demographic data, perforation size of the tympanic membrane at the preoperative state, operation time, hearing outcome, and graft success rate were evaluated. Results The epidemiological profiles, the preoperative hearing status, and the perforation size were similar in both groups. The mean operation time of the MT group (52.63 ± 8.68 minutes) was longer than that of the ET group (48.20 ± 10.37 minutes), but the difference was not statistically significant. The graft success rates 12 weeks postoperatively were 91.42% both in the ET and MT groups, that is, 32/35; and these values were not statistically significantly different. There was a statistically significant improvement in hearing within the groups, both pre- and postoperatively, but there was no difference between the groups. Conclusion Endoscopic tympanoplasty is a minimally invasive surgery with similar graft success rate, comparable hearing outcomes and shorter operative time period as compared to microscopic use.
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Qureshi, Nausheen, Muhammad Musharaf Baig, Misbah Parvez, Sundas Masood, and Memoona Afzal. "Comparison of Endoscopic Tympanoplasty with Microscopic Tympanoplasty." Journal of Rawalpindi Medical College 24, no. 4 (December 30, 2020): 400–405. http://dx.doi.org/10.37939/jrmc.v24i4.1481.

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Background: Minimally invasive surgery has recently been developed along with endoscopic techniques. Endoscopic Ear Surgery is becoming popular with its anatomic and physiologic concepts. Tympanoplasty is one of the commonest operations performed for the middle ear. While using the endoscope we can place the graft accurately while avoiding unnecessary post or endaural incision and soft tissue dissections which are mandatory during tympanoplasty using a microscope. Our study was aimed to compare the outcomes of endoscopic and microscopic tympanoplasty in terms of graft uptake, hearing outcome and postoperative pain. Methods: This is a retrospective comparative study of 63 patients who underwent type 1 tympanoplasty at Holy Family Hospital ENT Department from March 2017 to March 2020. The subjects were classified into 2 groups; Endoscopic tympanoplasty (ET, n=30), Microscopic Tympanoplasty (MT, n=33). Type 1 Tympanoplasty, was the procedure done on patients of both the groups. Demographic data, perforation size of the tympanic membrane at preoperative state, pure tone audiometric results preoperatively and 3 months postoperatively, operation time, sequential postoperative pain scale (NRS-11), and graft success rate were evaluated. Results : The perforation size of the tympanic membrane in the Endoscopic group and the microscopic group was nearly the same (p=.877). Pre and post-operative air-bone gaps including air and bone conduction thresholds were not significantly different between the two groups. The graft success rate in the endoscopic and Microscopic group was 93.3% and 63.3% respectively; the values were significantly different(p=0.0046). Immediate and 6 hours postoperative pain was similar in both the groups, however pain on ist postoperative day was significantly lower in the endoscopic group. Conclusion: We can do minimal invasive tympanoplasty with the help of endoscopes with better graft success rate, less preoperative time, and less postoperative pain.
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Qureshi, Nausheen, Muhammad Musharaf Baig, Misbah Parvez, Sundas Masood, and Memoona Afzal. "Comparison of Endoscopic Tympanoplasty with Microscopic Tympanoplasty." Journal of Rawalpindi Medical College 24, no. 4 (December 30, 2020): 400–405. http://dx.doi.org/10.37939/jrmc.v24i4.1481.

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Background: Minimally invasive surgery has recently been developed along with endoscopic techniques. Endoscopic Ear Surgery is becoming popular with its anatomic and physiologic concepts. Tympanoplasty is one of the commonest operations performed for the middle ear. While using the endoscope we can place the graft accurately while avoiding unnecessary post or endaural incision and soft tissue dissections which are mandatory during tympanoplasty using a microscope. Our study was aimed to compare the outcomes of endoscopic and microscopic tympanoplasty in terms of graft uptake, hearing outcome and postoperative pain. Methods: This is a retrospective comparative study of 63 patients who underwent type 1 tympanoplasty at Holy Family Hospital ENT Department from March 2017 to March 2020. The subjects were classified into 2 groups; Endoscopic tympanoplasty (ET, n=30), Microscopic Tympanoplasty (MT, n=33). Type 1 Tympanoplasty, was the procedure done on patients of both the groups. Demographic data, perforation size of the tympanic membrane at preoperative state, pure tone audiometric results preoperatively and 3 months postoperatively, operation time, sequential postoperative pain scale (NRS-11), and graft success rate were evaluated. Results : The perforation size of the tympanic membrane in the Endoscopic group and the microscopic group was nearly the same (p=.877). Pre and post-operative air-bone gaps including air and bone conduction thresholds were not significantly different between the two groups. The graft success rate in the endoscopic and Microscopic group was 93.3% and 63.3% respectively; the values were significantly different(p=0.0046). Immediate and 6 hours postoperative pain was similar in both the groups, however pain on ist postoperative day was significantly lower in the endoscopic group. Conclusion: We can do minimal invasive tympanoplasty with the help of endoscopes with better graft success rate, less preoperative time, and less postoperative pain.
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Pereira, Pedro, Armando Peixoto, Patrícia Andrade, and Guilherme Macedo. "Peroral Cholangiopancreatoscopy with the SpyGlass® System: What do we Know 10 Years Later." Journal of Gastrointestinal and Liver Diseases 26, no. 2 (June 1, 2017): 165–70. http://dx.doi.org/10.15403/jgld.2014.1121.262.cho.

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Smaller endoscopes and catheters have been developed that permit direct visualization of the bile and pancreatic ducts (cholangioscopy and pancreatoscopy, respectively). These endoscopes and catheters are passed through the working channel of a standard therapeutic duodenoscope during endoscopic retrograde cholangiopancreatography (ERCP). The SpyGlass Direct Visualization System (Boston Scientific Corp, Natick, MA, USA) is currently the most widely used and studied device. Cholangioscopy with intraductal lithotripsy has become an established modality in the treatment of difficult biliary lithiasis. When used in the evaluation of indeterminate biliary strictures by experienced endoscopists in recognizing intraductal pathology, it increases the diagnostic yield of tissue sampling. Pancreatoscopy is complementary to other imaging modalities in the evaluation of intraductal papillary mucinous neoplasms of the pancreas and is emerging as a sole or adjunctive therapy to extracorporeal shock wave lithotripsy for the treatment of main pancreatic duct stones. It remains investigational in the diagnosis of pancreatic adenocarcinoma. Complications specific to the performance of cholangiopancreatoscopy include cholangitis, which is related to intraductal fluid irrigation.Abbreviations: EHL: Electrohydraulic lithotripsy; ERCP: Endoscopic retrograde cholangiopancreatography; ESWL: Extracorporeal lithotripsy by shock waves; ET: Endoscopic therapy; EUS: Endoscopic ultrasound; IPMN: intraductal papillary mucinous neoplasm; LL: Laser lithotripsy; MDCT: Multi-detector computed conventional tomography; MPD: Main pancreatic duct; MRCP: Magnetic resonance cholangiopancreatography; MRI: Magnetic resonance imaging; POCPS: Peroral cholangiopancreatoscopy; PSC: Primary sclerosing cholangitis
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Limsrivilai, Julajak, Choon Kin Lee, Piyapan Prueksapanich, Kamin Harinwan, Asawin Sudcharoen, Natcha Cheewasereechon, Satimai Aniwan, et al. "Validation of models using basic parameters to differentiate intestinal tuberculosis from Crohn’s disease: A multicenter study from Asia." PLOS ONE 15, no. 11 (November 30, 2020): e0242879. http://dx.doi.org/10.1371/journal.pone.0242879.

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Background Data on external validation of models developed to distinguish Crohn’s disease (CD) from intestinal tuberculosis (ITB) are limited. This study aimed to validate and compare models using clinical, endoscopic, and/or pathology findings to differentiate CD from ITB. Methods Data from newly diagnosed ITB and CD patients were retrospectively collected from 5 centers located in Thailand or Hong Kong. The data was applied to Lee, et al., Makharia, et al., Jung, et al., and Limsrivilai, et al. model. Results Five hundred and thirty patients (383 CD, 147 ITB) with clinical and endoscopic data were included. The area under the receiver operating characteristic curve (AUROC) of Limsrivilai’s clinical-endoscopy (CE) model was 0.853, which was comparable to the value of 0.862 in Jung’s model (p = 0.52). Both models performed significantly better than Lee’s endoscopy model (AUROC: 0.713, p<0.01). Pathology was available for review in 199 patients (116 CD, 83 ITB). When 3 modalities were combined, Limsrivilai’s clinical-endoscopy-pathology (CEP) model performed significantly better (AUROC: 0.887) than Limsrivilai’s CE model (AUROC: 0.824, p = 0.01), Jung’s model (AUROC: 0.798, p = 0.005) and Makharia’s model (AUROC: 0.637, p<0.01). In 83 ITB patients, the rate of misdiagnosis with CD when used the proposed cutoff values in each original study was 9.6% for Limsrivilai’s CEP, 15.7% for Jung’s, and 66.3% for Makharia’s model. Conclusions Scoring systems with more parameters and diagnostic modalities performed better; however, application to clinical practice is still limited owing to high rate of misdiagnosis of ITB as CD. Models integrating more modalities such as imaging and serological tests are needed.
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Ono, Satoshi, Shun Ito, Kyohei Maejima, Shosuke Hosaka, Kiyotaka Umeki, and Shin-ichiro Sato. "Tapering body stiffness shortens upper gastrointestinal examination via transoral insertion with ultrathin endoscope." Endoscopy International Open 08, no. 12 (November 17, 2020): E1748—E1753. http://dx.doi.org/10.1055/a-1266-3203.

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Abstract Background and study aims Ultrathin endoscopes are commonly used for surveillance esophagogastroduodenoscopy (EGD) to reduce discomfort associated with scope insertion. However, the flexibility of an ultrathin endoscope is a trade-off between reducing discomfort and lengthening examination time. Patients and methods The EG17-J10 (EG17) is a novel ultrathin endoscope characterized by its tapering body stiffness; however, the flexibility of its tip is comparable to that of the traditional ultrathin endoscope EG16-K10 (EG16). We compared EGD examination time between EG17 and EG16. A total of 319 examinees who underwent EGD from November 2019 to January 2020 at the Chiba-Nishi General Hospital were enrolled. Six examinees were excluded due to past history of surgical resection of the upper gastrointestinal tract or too much food residues; 313 examinees (EG17, 209; EG16,104) were retrospectively analyzed. The examination time was divided into three periods: esophageal insertion time (ET), gastroduodenal insertion time (GDT), and surveillance time of the stomach (ST). The total amount of ET, GDT, and ST was defined as total examination time (TT). Results TT of EGD using EG17 was significantly shorter compared to EGD using EG16 (222.7 ± 68.9 vs. 245.7 ± 78.5 seconds) (P = 0.004). Among the three periods of examination time, ET (66.7 ± 24.1 vs. 76.0 ± 24.1 seconds) (P = 0.001) and GDT (47.9 ± 17.4 vs. 55.2 ± 35.2 seconds) (P = 0.007) of EGD using EG17 were significantly shorter compared to EGD using EG16, except for ST (108.1 ± 51.5.1 vs. 114.5 ± 50.1 seconds) (P = 0.148). Conclusion An ultrathin endoscope with tapering body stiffness can shorten EGD examination time, mainly due to the shortening of insertion time.
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Low, Christopher, PAM Young, Christopher J. Webb, Peter Walshe, Stephen Hone, Alessandro Panarese, and Maxwell S. Mccormick. "A simple and reliable predictor for an adequate laryngeal view with rigid endoscopic laryngoscopy." Otolaryngology–Head and Neck Surgery 132, no. 2 (February 2005): 244–46. http://dx.doi.org/10.1016/j.otohns.2004.09.037.

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OBJECTIVES: It is sometimes impossible to obtain an adequate laryngeal view during rigid endoscopic laryngoscopy. This may be due to a high tongue base. Our study seeks to determine a correlation between tongue base level and the adequacy of laryngeal view obtained with a 70-degree rigid endoscope. STUDY DESIGN AND SETTING: Over a period of 4 months, patients from a voice clinic were gathered and categorized into class I to III according to Mallampati et al (1985). Rigid laryngo-videostroboscopy was conducted to assess the larynx and the adequacy of the view was recorded. RESULTS: 74 patients were recruited. The number of adequate views were: class I = 18/20 (90%); class II = 20/33 (60.6%); class III = 7/21 (33.3%). χ2 analysis demonstrated significance trend in all 3 classes. CONCLUSION: The level of the tongue base correlated well with the adequacy of laryngeal view obtained from a 70-degree rigid endoscope. This can be used to predict the success of obtaining adequate views during rigid laryngoscopy.
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Piski, Zalán, Imre Gerlinger, Eszter Tóth, István Háromi, Nelli Nepp, and László Lujber. "Kitozán hatóanyagú orrtampon tulajdonságainak vizsgálata állatkísérletes modellen." Orvosi Hetilap 159, no. 47 (November 2018): 1981–87. http://dx.doi.org/10.1556/650.2018.31195.

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Abstract: Introduction: The usefulness of nasal packing after endoscopic sinus surgery is still debated in the literature. Aim: Our aim was to evaluate the effects of a new chitosan-based nasal dressing in animal model. Methods: Standard mucosal damage was caused in both nostrils during endoscope-assisted procedure in ten rabbits. Chitosan nasal packing was inserted in a randomly selected nasal fossa of each animal, while the other side was left unpacked. Symptoms were evaluated during nasal endoscopy on the 12th postoperative week. The degree of mucosal oedema, crusting, adhesions and the nasal discharge were observed according to the modification of the grading system of Berlucchi et al. The higher scores indicated the worse complaints. Results: Assessing the adhesion formation, 1 point was given (mean: 0.1; standard deviation [SD]: 0.32) for the unpacked side, while in the tamponated side no adhesion formation was observed. The total score of crusting in the non-packed side was lower with 1 point (total score: 9, mean: 0.90; SD: 0.74) than in the chitosan side (total score: 10, mean 1.00; SD: 0.82). Discharge or mucosal oedema were not observed during the follow-up period. The mean rate, measured with electronmicroscopy, was 22.06% (SD: 0.25) in the chitosan side, while in the non-packed side it was 36.11% (SD: 0.48). The differences did not show any significance (p = 0.806). Conclusion: During the examinations, none of the animals suffered complications. The symptoms of the packed and the non-packed nasal cavities did not differ significantly on the basis of our examinations. Orv Hetil. 2018; 159(47): 1981–1987.
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Dissertations / Theses on the topic "Endoscopes et endoscopie"

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Buckley, Colman. "Conception et réalisation d’un endomicroscope polarimétrique de Mueller à fibre en vue d’une application à l’aide au diagnostic médical in vivo." Thesis, Limoges, 2020. http://www.theses.fr/2020LIMO0063.

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La structuration de tissus biologiques à l’échelle submicronique peut être efficacement caractérisée par la polarimétrie optique de Mueller, ce qui confère à cette technique un grand intérêt pour l’aide au diagnostic précoce de diverses pathologies affectant la matrice extracellulaire, telles que certains cancers. En vue d’étendre son champ d’application à la caractérisation d’organes internes, la polarimétrie de Mueller peut être mise en œuvre à travers une fibre optique utilisée comme moyen de déport endoscopique,grâce à une méthode de mesure différentielle à deux longueurs d’onde (dite “méthode bichromatique”) mise au point précédemment à l’institut Xlim. Les travaux effectués dans cette thèse ont pour objectif de concevoir et de réaliser un endomicroscope polarimétrique de Mueller à fibre, fondé sur la méthode bichromatique,répondant aux exigences de l’imagerie endoscopique in vivo. En premier lieu, nous mettons au point une procédure accélérée d’acquisition des données permettant de réduire de plusieurs heures à quelques secondes le temps de réalisation d’une image de Mueller. Par la suite, nous développons une microsonde située à l’extrémité distale de la fibre endoscopique, de dimensions suffisamment petites pour être utilisée en endoscopie (longueur : 30 mm, diamètre : 3 mm), incluant un système de balayage rapide (microscanner) par mise en résonance mécanique de l’extrémité de la fibre. Le filtre dichroïque miniaturisé nécessaire pour mettre en œuvre la méthode bichromatique est un réseau de Bragg photoinscrit dans le cœur de la fibre. La conception, la fabrication et les caractérisations spectrale et polarimétrique de ce composant clé font l’objet d’une étude approfondie. Enfin, après la description détaillée de la microsonde, nous présentons et commentons les images polarimétriques de Mueller d’une lame de phase connue et d’un échantillon biologique (collagène de type I) réalisées avec l’endomicrocope équipé de cette microsonde (1 image/2s, 250x250 pixels, champ de 400μm, résolution : 4μm). Ces images attestent de la validité de l’instrument réalisé. Dans un dernier temps, nous proposons et expérimentons une solution pour déterminer la dépolarisation spatiale à travers la fibre endoscopique, basée sur la décomposition de la somme de matrices de Mueller de pixels voisins
The structure of biological tissues on submicron scale can be efficiently caracterized by optical Mueller polarimetry, which gives this technique a great interest for an aid to early medical diagnosis of diverse pathologies affecting the extracellular matrix, such as some cancers. In order to extend the application field to the caracterization of internal organs, Mueller polarimetry can be developed through an optical fiber as an endoscope, thanks to a two wavelengths differential measurement method (called“bichromatic method”) developed at the Xlim institute. The work carried out in this thesis aims to design and realize a fiber based Mueller polarimetric endomicroscope, based on the bichromatic method, meeting the requirements of in vivo endoscopic imaging. In the first place, we develop an accelerated data acquisition procedure allowing to reduce from several hours to a few seconds the realization time of a Mueller image. Thereafter, we develop a microprobe located at the distal tip of the endoscopic fiber, with dimensions sufficiently small to be used in endoscopy (length : 30 mm, diameter : 3 mm), including a fast scanning system (microscanner) done by the mechanical resonance of the fiber tip. The miniaturized dichroic filter required to implement the bichromatic method is a fiber Bragg grating photowritten into the fiber core. The design, the fabrication, the spectral and polarimetric characterizations of this key component are the subject of an in-depth study. Finally, after the detailed description of the microprobe, we present and comment on the Mueller polarimetric images of a known waveplate and a biological sample (type I collagen) realized with the endomicroscope equiped with this microprobe (1 image/2s, 250 x 250pixels, field of view : 400μm, resolution : 4μm). These images confirm the validity of the realized instrument. At last, we propose and experiment a solution to determine spatial depolarization through the endoscopic fiber, based on the decomposition of the sum of Mueller matrices of neighbouring pixels
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Mayaud, Régis. "Endoscopie et cophochirurgie." Saint-Etienne, 1990. http://www.theses.fr/1990STET6421.

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Gonzalez, Jean-Michel. "Validation métabolique d'un modèle animal de by-pass endoscopique exclusif par une étude comparative sur modèle porcin obèse de type Yucatan, et développement des technologies permettant l'application humaine." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0667.

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Introduction – La chirurgie bariatrique malgré son efficacité reste morbide. L’endoscopie digestive a développé des techniques bariatriques. La réalisation d’un by-pass endoscopique (BPE) est notre sujet de recherche. Nous présentons les résultats métaboliques et techniques pour un passage à l’homme. Matériels et méthodes - Les études furent menées au CERC de 2012 à 2019. La phase initiale a abouti à un modèle d’AGJ expérimental par apposition prothétique luminale (stents Axios®) avec évaluation métabolique sur minipig normal et sa transposition à l’homme. Dans la 2ème partie, la validation métabolique a été réalisée sur 24 minipigs obèses Yucatan avec 4 groupes : anastomose gastro-jejunale (AGJ) seule, BPE complet, bypass chirurgical, et sham procedure. L’amélioration du matériel portait sur : la prothèse d’apposition, la fermeture pylorique endoscopique, la préhension et la sélection de l’anse bypassée. Résultats – Matériel : Nous avons amélioré ou obtenu : i) la fiabilité de l’anastomose en modifiant la prothèse (forme bi-concave) ; ii) la fermeture pylorique en créant un « twist » central de la prothèse Axios®; iii) la préhension de l’anse par la création d’un pince dédiée atraumatique ; iv) sa sélection à 150cm du pylore par l’introduction d’un cathéter lumineux, repéré lors de la péritonéoscopie souple. Validation métabolique : les résultats sont en attente, mais la comparaison des groupes endoscopie a montré que l’exclusion duodénale permettait une perte de poids plus importante que l’AGJ seule. Conclusion – Cette thèse permet la validation métabolique et technique d’un modèle expérimental de bypass endoscopique exclusif. Un passage à l’homme est prévu en 2021
Introduction - Bariatric surgery, despite its effectiveness, remains morbid. Digestive endoscopy has developed bariatric techniques. The realization of an endoscopic by-pass (EBP) is our research topic. We present its metabolic and technical results for a transition to humans. Materials and methods - The studies were conducted at the CERC from 2012 to 2019. The initial phase resulted in an experimental AGJ model by lumen apposing stent (Axios® stents) with metabolic evaluation on normal minipig and the first humans’ cases. In the 2nd part, the metabolic validation was performed on 24 obese Yucatan minipigs with 4 groups: gastro-jejunal anastomosis (GJA) alone, full BPE, surgical bypass, and sham procedure. The equipment improvements included: the apposing stent, endoscopic pyloric closure, grasping and selection of the bypassed limb. Results - Material: We have improved or acheuved: i) the reliability of the anastomosis by modifying the stent (bi-concave shape); ii) the pyloric closure by creating a central "twist" of the Axios® stent; iii) the grasping of the limb by creating a dedicated atraumatic forceps; iv) its selection at 150cm from the pylorus by introducing a luminous catheter, identified during flexible peritoneoscopy. Metabolic validation: results are pending, but comparison of endoscopy groups showed that duodenal exclusion allows for greater weight loss than GJA alone. Conclusion - This experimental research allows the metabolic and technical validation of an exclusive experimental endoscopic bypass model. A transition to man is planned for 2021
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Caillaud, Philippe. "La ventriculoscopie : réalités et perspectives d'une méthode, à propos de 51 observations." Bordeaux 2, 1994. http://www.theses.fr/1994BOR23067.

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Vanbiervliet, Geoffroy. "Validation clinique et métabolique de l'approche endoscopique par notes de la chirurgie bariatrique sur modèle porcin vivant." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM5073.

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Introduction – Le but de ce travail était de développer un modèle expérimental endoscopique de chirurgie bariatrique par technique NOTES, simple, reproductible et de le valider à la fois sur le plan clinique (faisabilité, tolérance) et sur le plan métabolique (physiopathologie et mode d’action). Matériels et méthodes - Les études furent menées au sein du CERC et de l’unité INSERM UMRS 1260. L’animal étudié fut le cochon domestique, âgé de 3 à 4 mois, sains et non obèse. Les endoscopies étaient réalisées à l’aide d’un gastroscope double canal opérateur et de matériel d’endoscopie couramment disponible. Plusieurs étapes de développement furent mises en place de la confection d’un modèle animal d’anastomose gastro-jéjunale par technique endoscopique NOTES exclusive à l’évaluation de l’impact métabolique d’un modèle de by-pass gastrique à visée bariatrique utilisant l’anastomose gastro-jéjunale par apposition prothétique luminale. Résultats – Le modèle d’anastomose gastro-jéjunale choisi pour sa faisabilité et son innocuité fut développé par apposition des lumières digestives gastriques et grêliques avec prothèse en technique NOTES trans digestive. L’évaluation métabolique expérimentale du by-pass gastrique utilisant ce mode opératoire permit de constater une amélioration significative de l’insulino-résistance non véhiculées par le GLP-1. Conclusion – Le concept d’anastomose digestive par NOTES exclusive et apposition luminale prothétique est établi et le modèle de by-pass endoscopique utilisant ce mode opératoire est faisable semblant présenter un impact métabolique significatif
Introduction - The aim of this study was to develop an endoscopic experimental model of NOTES bariatric surgery using a simple, reproducible technique and to validate it both clinically (feasibility, tolerance) and metabolically (pathophysiology and action plan). Materials and Methods - The studies were conducted within the CERC and INSERM UMRS 1260 unit. The animal was the pig, aged 3 to 4 months, healthy and not obese. Endoscopies were performed using a dual channel gastroscope operator and the endoscopy equipment currently available. Several development stages were set up from the development of an animal model of gastrointestinal anastomosis using an exclusive endoscopic NOTES procedure to the evaluation of the metabolic impact of gastric bypass bariatric model described using the gastrointestinal anastomosis by luminal apposing stent technique. Results - The gastro-jejunal anastomosis model chosen for its feasibility and safety was developed by luminal apposing gastric and small bowel digestive lumens with a specific metallic covered stent and NOTES technique. The experimental evaluation of the metabolic gastric bypass using this procedure allowed to observe a significant improvement in insulin resistance none mediated by GLP-1 and incretin effect. Conclusion - The concept of anastomosis with luminal apposing stent and exclusive NOTES technique is established and endoscopic bypass model using this procedure is feasible pretend to present a significant metabolic impact
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Mytskaniuk, Vasyl Iuriyovych. "Endoscopie non-linéaire : instrumentation et applications." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0553/document.

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Nous présentons le développement d’un endoscope non-linéaire à balayage distal utilisant une fibre creuse à la courbure négative et présentant une double gaine. L’endoscope flexible développé présente un diamètre de 2.2 mm, permet d’imager un champ de vue de 300 x 300 um, à la cadence de 8 images par seconde. Il permet d’acquérir des images CARS, 2 photons et SHG sur des tissus biologiques. Nous démontrons son potentiel sur divers échantillons de tissus murins et humains. Nous avons également réussi à faire de l'imagerie sans marquage (CARS) sur la moelle épinière d'une souris vivante. Ainsi que l'activité neuronale du cerveau d'une souris vivante dont des neurones marquées avec de la GFP. Nous sommes convaincus que cet appareil présentera des solutions pertinentes et innovatives pour la diagnostique médicale
We present the development of a fiber-based, scanning-tip endoscope for nonlinear imaging. The flexible endoscope developed in the framework of this thesis, has an outer diameter of 2.2 mm. The innovation of the technology lies in its high scanning speed (8 frames/second) and large field-of-view (FOV>300 microns). The miniaturized endoscope enables high resolution coherent anti-Stokes Raman (CARS), 2photon fluorescence and second harmonic generation (SHG) imaging contrasts. We show the potential of the endoscope to image different biological samples and specimens with and without endogenous labeling. We have obtained CARS images of fresh, label-free human colon ex-vivo and SHG images of collagen from rat tail tendon. Finally, we managed to perform in-vivo imaging of calcium flow indicators from hippocampal neurons labeled with Green Fluorescent Protein (GFP). We are convinced that this imaging device will have a strong impact on biomedical imaging
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Lalanne, Elisabeth. ""Pneumocystis carinii" et endoscopie bronchique : étude préliminaire à l'hôpital Tenon." Paris 5, 1994. http://www.theses.fr/1994PA05P255.

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Cordet, Frédéric. "Sédation et endoscopie digestive haute : étude d'un score prédictif, revue bibliographique et recommandations." Bordeaux 2, 1997. http://www.theses.fr/1997BOR23050.

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VANDEVENTER, GEOFFROY. "Endoscopie de l'oreille moyenne : interets et perspectives." Toulouse 3, 1990. http://www.theses.fr/1990TOU31504.

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Conil, Frédéric. "Développements instrumentaux et expérimentation en endoscopie sismique." Rennes 1, 2003. http://www.theses.fr/2003REN10164.

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L'endoscopie sismique est une méthode d'imagerie acoustique tridimensionnelle du voisinage de forages de faible diamètre. La première partie de ce travail de thèse concerne la conception d'un instrument de terrain réalisant des images avec une directivité azimutale et une résolution centimétrique. Des simulations numériques associées à des tests expérimentaux ont permis d'optimiser la construction d'un outil multi-azimuts et multi-offsets. Dans une deuxième partie, nous nous intéressons à l'optimisation de signaux acoustiques non linéaires, en temps réel, par la méthode du recuit simulé. Des applications sont proposées pour adapter la bande de fréquence de l'outil aux méthodes de traitement sismique et dans le cadre de l'étude de la réflectivité de milieux granulaires ou rugueux. Enfin, en complément des traitements classiques de sismique, une dernière partie est consacrée à la mise au point d'algorithmes spécifiques liés à la géométrie d'acquisition de la sonde.
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Books on the topic "Endoscopes et endoscopie"

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Association québécoise des infirmières et assistantes en gastro-entérologie. Colloque. Formation continue en endoscopie: Résumé des présentations : cinquième Colloque de l'Association québécoise des infirmières et assistantes en gastro-entérologie. Châteauguay, Qué: Association québécoise des infirmières et assistantes en gastro-entérologie, 1995.

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Association québécoise des infirmières et assistantes en gastro-entérologie. Colloque. Formation continue en endoscopie: Résumé des présentations : deuxième Colloque de l'Association québécoise des infirmières et assistantes en gastro-entérologie. Châteauguay, Qué: Association québécoise des infirmières et assistantes en gastro-entérologie, 1992.

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Perneczky, Axel. Endoscopic anatomy for neurosurgery. Stuttgart: G. Thieme Verlag, 1993.

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Waldspurger, Jean-Loup. Intégrales orbitales nilpotentes et endoscopie pour les groupes classiques non ramifiés. Paris: Société mathématique de France, 2001.

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Jean, Waldspurger Loup. Inegrales Orbitales Nipotentes Et Endoscopie Pour Les Groupes Classiques Non Ramifies (Asterisque). Amer Mathematical Society, 2001.

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Steiner, Wolfgang, and Petra Ambrosch. Endoscopic Laser Surgery of the Upper Aerodigestive Tract. Thieme Publishing Group, 2000.

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Book chapters on the topic "Endoscopes et endoscopie"

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Barthet, M. "Abcès et fistules anales." In Écho-endoscopie digestive, 345–49. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_45.

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Palazzo, L. "Introduction — L’endosonographie digestive : pourquoi et comment ?" In Écho-endoscopie digestive, 1–4. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_1.

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Lefort, C. "Tumeurs villeuses, non glandulaires et rétrorectales." In Écho-endoscopie digestive, 307–12. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_38.

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Castellani, P. "Écho-endoscopie interventionnelle et hypertension portale." In Écho-endoscopie digestive, 389–90. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_53.

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Boustière, C., and G. Roseau. "Bases de la connaissance, matériel et séméiologie échographique." In Écho-endoscopie digestive, 5–11. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_2.

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Aubert, A. "Affections non tumorales et non lithiasiques de la voie biliaire principale." In Écho-endoscopie digestive, 215–18. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_23.

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Dupré, M. P., G. Monges, and M. Fabre. "Ponction sous écho-endoscopie Cytologie par étalement et en milieu liquide — Histologie en cytobloc." In Écho-endoscopie digestive, 23–41. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_4.

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Prat, F. "Algorithmes sur la place de l’écho-endoscopie dans la prise en charge des obstacles biliaires et des pancréatites aiguës d’allure biliaire." In Écho-endoscopie digestive, 231–33. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-287-99164-6_27.

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Moeglin, Colette, and Jean-Loup Waldspurger. "Intégrales orbitales et endoscopie sur le corps réel." In Stabilisation de la formule des traces tordue, 465–574. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30049-8_5.

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Sportouch, P., P. E. Benko, A. C. Masquelet, A. Yelnik, and P. Thoreux. "Faisabilité de l’exploration du défilé cervico-thoracobrachial sous endoscopie: Étude cadavérique." In Plexus brachial Actualités et perspectives, 41–57. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-8178-0334-0_7.

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Conference papers on the topic "Endoscopes et endoscopie"

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Elbacha, H., S. Leblanc, B. Bordacahar, B. Brieau, JC Duchmann, M. Barret, and F. Prat. "Traitement endoscopique par clip Ovesco des perforations duodénales post echo-endoscopie." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680980.

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Hamel, C., M. Bourhis, L. Tortolano, F. Lemare, and A. Gaudin. "Endoscopes souples: comparaison de deux méthodes de conditionnement." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2018. http://dx.doi.org/10.1055/s-0038-1623394.

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Camus, M., J. Jacques, JP Le Mouel, JM Gonzalez, L. Vuitton, M. Pioche, JB Chevaux, et al. "L'offre de formation initiale en simulation en endoscopie digestive en France." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680857.

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guignard, A., V. Nardon, MI Gheorghiu, J. Bottlaender, L. Plastaras, G. Breysacher, M. Bolliet, et al. "Programme assurance qualité en endoscopie: audit clinique prospectif de plus de 400 coloscopies." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680876.

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Winkler, J., F. Caillol, E. Bories, JP Ratone, C. Pesenti, A. Debourdeau, C. Decoster, M. Pizzicannella, and M. Giovannini. "Faisabilité du drainage biliaire sous écho-endoscopie des sténoses hilaires malignes non opérables." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680931.

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Tshimpi, A., P. Phaka, T. Ndarabu, A. Nkodila, JR Makulo, H. Situakibanza, JM Kayembe, R. Matanda, and S. Mbendi. "Endoscopies digestives à KInshasa (RDC): Pratique de l'endoscopie digestive interventionnelle. Etude multicentrique retrospective." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2018. http://dx.doi.org/10.1055/s-0038-1623366.

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Desplats, V., RL Vitte, A. D'alessandro, M. Rompteaux, J. Du Cheyron, G. Roseau, A. Fauconnier, and F. Moryoussef. "Apport de l'écho-endoscopie rectale dans la prédiction du type de chirurgie de l'endométriose." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680903.

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Guingand De Rivery, M., JM Gonzalez, M. Gasmi, and M. Barthet. "Traitement transrectal sous écho-endoscopie de collections pelviennes symptomatiques: Ponction ou drainage? Large étude monocentrique." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680895.

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Chanez, B., G. Gravis, J. Walz, G. Pignot, S. brunelle, J. Thomassin, N. Salem, et al. "Traitement des métastases pancréatiques d'origine rénale par radiofréquence sous écho-endoscopie: Faisabilité et résultats préliminaires." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680959.

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Zoungrana, SL, ZD Ouattara, M. Koura, R. Salou, S. Somda, and A. Coulibaly. "Endoscopie digestive haute dans les villes moyennes du Burkina Faso: Etude analytique de 3556 examens." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2018. http://dx.doi.org/10.1055/s-0038-1623361.

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