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)
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)
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)
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)
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)
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)
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