Insufflation damper for endoscopic vessel dissector/harvester
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United States of America Patent
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Dec 30, 2014
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app pub date -
Apr 18, 2012
filing date -
Apr 18, 2012
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Abstract
A vessel harvesting apparatus is provided for removing a vessel from a patient. An endoscopic instrument has a distal end with a vessel harvesting tip and has a proximal end with a handle. The endoscopic instrument has an insufflation channel adapted to receive an insufflation gas from a regulated source at the proximal end. The insufflation channel has an outlet at the distal end adapted to expel the insufflation gas subcutaneously in the patient. A damping device has a flexible bladder with an inside space in fluid communication with the insufflation channel. The inside space has a volume that varies between a rest volume and an inflated volume in response to an amount of insufflation gas flowing to or from the flexible bladder.
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