Johannes A. Coy

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The next step in minimally invasive surgery is the further reduction of incisions by surgery through natural orifices (NOTES) or one single artificial incision (Single-Port). However, physicians pointed out, that those procedures are only possible if new technologies will increase the dexterity of the instruments inside of the body. Especially the missing(More)
PURPOSE Though already proclaimed about 7 years ago, natural orifice transluminal endoscopic surgery (NOTES) is still in its early stages. A multidisciplinary working team tried to analyze the technical obstacles and identify potential solutions. METHODS After a comprehensive review of the literature, a group of 3 surgeons, 1 gastroenterologist, 10(More)
Designing a robotic system for surgical procedures is always challenging. Reliability, integration in the operating room and intuitive use even in stressful situations are some major requirements. Our project aims at the improvement of two widespread interventions in minimally invasive surgery (MIS): the endoscopic submucosal dissection (ESD) and the(More)
Grippers used in laparoscopic interventions do not meet all the needs a surgeon has. With a design kit to build customised grippers with selective laser sintering (SLS), fast development of grippers could help to overcome limitations and with many iterations improve the existing solutions. In order to create such a kit, its elements need to be understood(More)
Morbus Parkinson is a widespread disease amongst the elderly people. With increasing life expectancy the numbers of patients with Parkinsons disease are rising. Over the last decade, Deep Brain Stimulation (DBS) of certain nuclei within the basal ganglia has been established as an effective treatment for patients with advanced Parkinsons disease (PD) and(More)
The goal in minimally-invasive surgery like NOTES (natural orifice transluminal endoscopic surgery), or single-port surgery, through one artificial incision, is to reduce the operative and post-operative stresses for the patients. Today's challenges for physicians during procedures are the missing mobility of the used flexible instruments inside the human(More)
Surgical interventions at the middle ear are very challenging tasks for surgeons. At an otosclerosis the stapes is immobile because of an abnormal bone growth so that the sound transmission is disturbed. Therefore, a stapedotomy is performed where the stapes is partly replaced by a small implant to reconstruct the path of sound transmission. The state of(More)
The tympanoplasty-III is a widely used method to heal the conductive hearing loss by reconstructing the ossicular chain with passive middle ear prostheses. One of the major challenges during this procedure is to determine the correct prosthesis length intraoperatively, which specifies the tension on the tissues. A suboptimal tension on the tissues may(More)
The responsivity at a constant detection area of non-steady-state photoinduced electromotive force (photo-emf) detectors is improved by a factor equal to the number of contact pairs contained in asymmetric interdigitated surface contacts. The polar nature of photo-emf current generation requires contact asymmetry in which one increases the total signal by(More)
In recent years the development of additive manufacturing methods allows the production of functional parts, rather than only prototypes. The Institute of Micro Technology and Medical Device Technology at TU München designs medical robots for the production with additive manufacturing method selective laser-sintering. With this method it is possible(More)