×

System and Method of Non-Invasive Continuous Level Sensing

  • US 20100192699A1
  • Filed: 04/14/2010
  • Published: 08/05/2010
  • Est. Priority Date: 06/28/2006
  • Status: Active Grant
First Claim
Patent Images

1. A system for detecting the level of fluid in a surgical cassette, comprising:

  • a linear light array comprising;

    a first light source to project a first beam of light into a first cassette wall along a first transmission path, wherein the first transmission path has an angle of incidence with a chamber surface so that at least a majority of the first light beam is refracted if a cassette material/first fluid interface intersects the first transmission path; and

    a second light arranged along a vertical axis with respect to the first light source to project a second beam of light into the first cassette wall along a second transmission path, wherein the second transmission path has an angle of incidence with the chamber surface so that at least a majority of the second light beam is reflected if the cassette material/second fluid interface intersects the second transmission path; and

    a linear sensor array comprising a first portion positioned to receive the first beam of light and a second portion positioned to receive the second beam of light and produce an output signal to indicate whether each of the first and second portions are illuminated.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×