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Pressure-maintaining smoke evacuation in an insufflator

  • US 10,384,021 B2
  • Filed: 09/26/2014
  • Issued: 08/20/2019
  • Est. Priority Date: 09/27/2013
  • Status: Active Grant
First Claim
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1. An insufflator for minimally invasive surgery, comprisinga) a gas connection with a proportional valve,b) a supply line with a pressure measurement, filter, and connection to a first trocar,c) a second trocar with an extraction hose and filter, connected to an extraction device with an adjustable extraction capacity for extracting insufflation gas such that all insufflation gas that is extracted from a body cavity is always discharged to the atmosphere, andd) an electronic control unit,wherein the electronic control unit adjusts the extraction device in dependence on the pressure in the supply line.

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