Patent ID: 8079836
Filing Date: 2011-12-20
Classification: A61M,F04B

Abstract:
1. A method for operating a peristaltic pump having a roller head, comprising: operatively contacting a cassette with at least one roller of the roller head, the cassette having a body and an elastomeric sheet coupled to the body, wherein a space between the body and the sheet forms at least one fluid channel; rotating the roller head so that the roller head contacts the sheet to cause fluid flow through the at least one fluid channel, wherein rotating the roller head displaces the elastomeric sheet to move fluid between the sheet and the body; determining a location of the at least one roller; and parking the at least one roller at an inlet port that inhibits fluid flow through the at least one fluid channel to protect the fluid channel from a positive pressure, the parked position of the at least one roller being based upon the determined location of the at least one roller; applying the positive pressure to a vacuum line; a surgical console determining when a positive pressure is being or will be applied to the vacuum line coupled to the at least one fluid channel and wherein parking the at least one roller is in response to the surgical console determination that a positive pressure is being or will be applied to the vacuum line.