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Gastro intestinal prostheses

Erik A Johannessen, Lei Wang, Li Cui, Tong Boon Tang, Mansour Ahmadian, Alexander Astaras, Stuart W J Reid, Philippa S Yam, Alan F Murray, Brian W Flynn, Steve P Beaumont, David R S Cumming, Jonathan M Cooper
A novel microelectronic "pill" has been developed for in situ studies of the gastro-intestinal tract, combining microsensors and integrated circuits with system-level integration technology. The measurement parameters include real-time remote recording of temperature, pH, conductivity, and dissolved oxygen. The unit comprises an outer biocompatible capsule encasing four microsensors, a control chip, a discrete component radio transmitter, and two silver oxide cells (the latter providing an operating time of 40 h at the rated power consumption of 12...
March 2004: IEEE Transactions on Bio-medical Engineering
Zahid Mahmood, Barry McMahon, Colm O'Morain, Donald G Weir
BACKGROUND: Gastro-oesophageal reflux disease (GORD) is a common disorder which significantly impairs the quality of life. Recently a number of endoscopic antireflux procedures have been described, with a view to the management of GORD, thus obviating the need for long-term proton pump inhibitors and the cost and potential risk of laparoscopic Nissen fundoplication. AIM: To evaluate the status of new techniques using gastro-intestinal endoscopy for the management of GORD...
2002: Digestive Diseases
D Mutter, M Aprahamian, C Damge, P Sonzini, J Marescaux
New artificial biomaterials were tested for support of gastro-intestinal tract wound healing in the rat. Double layered collagenic matrices were prepared with purified collagens extracted from human placental tissues. Two types of patches were tested, the first constituted from a collagen type I + III layer covered by collagen IV in a liquid phase (patch I + III/IV) and the second from a collagen IV layer covered by liquid collagen IV (patch IV/IV). The matrices were applied with fibrin sealant to the edges of a 1 cm diameter colonic wall defect in the rat...
July 1996: Biomaterials
F Delahaye, V Goulet, F Lacassin, R Ecochard, C Suty-Selton, B Hoen, J Etienne, S Briançon, C Leport
In order to update our information about the incidence and demographic, microbiological and clinical characteristics of infective endocarditis (IE) in France, a 12 month long study was carried out in three regions: Ile de France, Rhône-Alpes and Lorraine. Four hundred and fifteen cases of IE were recensed: certain (32%), probable (53%) or possible (15%). The annual incidence was 24.3 per million. The average age was 56 +/- 19 years. There was no past history of cardiac disease in 34% of cases; 33% had native valvular heart disease and 22% had one or more valvular prostheses...
December 1993: Archives des Maladies du Coeur et des Vaisseaux
A Renzulli, N Vitale, A Caruso, F Covino, F De Vivo, L Piazza, M Cotrufo
The Jyros valve is a new bileaflet valve with the unusual feature that the hinge is expected to rotate continuously inside the housing. Nine isolated Jyros mitral prostheses were implanted from July to October 1993. All patients survived the surgical procedure and during the follow up underwent transthoracic (TTE) and transesophageal echocardiograms (TEE) for the evaluation of hinge rotation. Neither TTE nor TEE were able to show hinge rotation in any patient at any time. Five patients had prosthetic thrombosis...
September 1994: Journal of Heart Valve Disease
H C Chadderton
Results of a survey of 19 organizations belonging to World Veterans Federation indicate that major complains of amputees include; poor fitting, poor dissemination of knowledge to doctors and amputees regarding new prostheses, lack of opportunity for "input" from amputees at research level and inadequate measures to deal with phantom and stump pain. Suggested improvements by amputees; decrease in weight of prostheses, reduction in maintenance for swing and stance-phase control units development of recreational prostheses, more frequent checks through use of X-ray and film techniques, particularly during the "break-in" of a new appliance...
April 1978: Prosthetics and Orthotics International
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