초록 ▼

A monitor to provide substantially real-time estimates of fluid absorption rate and tissue loss rate in a patient during a surgical procedure. The monitor estimates fluid source flow rates and waste fluid flow rates based on weight changes per unit time or direct reading fluid flow rate meters. Tiss

A monitor to provide substantially real-time estimates of fluid absorption rate and tissue loss rate in a patient during a surgical procedure. The monitor estimates fluid source flow rates and waste fluid flow rates based on weight changes per unit time or direct reading fluid flow rate meters. Tissue loss flow rates are estimated based on tissue concentration measurable in waste irrigation fluid using an optical comparator, and are used to correct waste fluid flow rates. Correct waste fluid flow rates are used in turn to obtain estimated fluid absorption rates.

대표청구항 ▼

[ What is claimed is:] [1.] A method of estimating fat concentration in a waste fluid sample, the method comprising:inducing cytolysis in the waste fluid sample producing a cytolytic fluid;variably scattering at a least a portion of light from a light source;intercepting the variably scattered light

[ What is claimed is:] [1.] A method of estimating fat concentration in a waste fluid sample, the method comprising:inducing cytolysis in the waste fluid sample producing a cytolytic fluid;variably scattering at a least a portion of light from a light source;intercepting the variably scattered light at two comparison chambers where one comparison chamber receives and transmits the cytolytic fluid and a second comparison chamber receives and transmits a reference standard fluid;detecting output light emanating from the two comparision chambers;comparing light absorption characteristics of the cytolytic fluid with light absorption characteristics of the reference standard fluid; andlooking up in a table a fat concentration of a reference standard fluid having light absorption characteristics substantially similar to the cytolytic fluid.