الفهرس 
MEDICAL BACKGROUNDOnly 14 pages are availabe for public view
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Abstract
Presently otorhinolaringological surgeons face a problem of lacking of the control in adenoidectomy, which means excision of a swelling that are located between the nasal airway and the back of the throat (nasopharynx). That is why it’s called blind operation in otorhinolaringology, leading to uncertain removal of the bad and good tissues. This research removes this uncertainty, eliminates a major problem, and risks during the surgery. It introduces a new tool to enable the surgeon to view surgical area, to be able to control the certainty of the operation. This developed tool consists of three main parts; DC motor connected to blade, visualization sensor connected to a monitor and suction tube. The motor is connected to special shaped blade rotational knife in a window) suits the volume and shape of theswelling, and also follows the international dimensions standards. Thisdevice enables the surgeon to see the target area and directing the blade towards the desired tissue to be removed, frees surgeon’s hand used to carry the endoscope. Moreover, the device gets rid off the hidden area under the endoscope as it avoids the surgeon to use the nasal opening for the endoscope. The cut tissue is drawn via suction tube. The amount of removed tissue can be easily visualized online and perfectly controlled,which increases the safety factors for adjacent structures/tissues such ; The Eustachian tube (orifice) and pre-vertebral muscles. Hence, the adenoidectomy operation becomes more accurate. Theoretical model was made by calculating the tool parts which was obtained through the existent experimental work, to get the optimum blade velocity for removing the target tissue. For a better visualization and precise control a built-in suction orifice added to the tool to clean the bloody field during the operation. A small lamp is located backward of visualization sensor to allow perfect vision during the operation. Also aggregation cavity was added to the new tool which is used to aggregate fluid during adenoidectomy. As a result, the adenoidectomyperformance becomes faster and safer than the available traditional devices, besides freeing the surgeon’s hand used to carry the endoscope.