Ex parte HARTRANFT et al. - Page 2




          Appeal No. 96-0881                                                          
          Application No. 07/795,908                                                  



               determining the actual concentration of individual                     
          concentrate components to be mixed as a dialysate;                          
               determining the actual conductivity of a dialysate to be               
          formed by the concentrate components and water;                             
          combining said concentrate components with said water to form               
          said dialysate;                                                             
               sensing the conductivity of said dialysate and comparing               
          said sensed conductivity of said dialysate with said                        
          determined actual conductivity of said dialysate; and                       
               contolling the proportions of said concentrate components              
          and said water in accordance with said comparison to obtain                 
          said determined actual dialysate conductivity.                              
          14. An apparatus for mixing dialysate in a hemodialysis                     
          machine, comprising:                                                        
               means for determining the actual concentration of                      
          individual concentrate components to be mixed in a dialysate;               
               means for determining the actual conductivity of a                     
          dialysate to be formed by the concentrate components and                    
          water;                                                                      
               means for combining said concentrate components with said              
          water to form said dialysate;                                               
               means for sensing the conductivity  of said dialysate and              
          means for comparing said sensed conductivity of said dialysate              
          with said determined actual conductivity; and                               
               means for controlling the proportions of said concentrate              
          components and said water in accordance with said comparison                
          to obtain said determined dialysate conductivity.                           
               The references of record relied upon by the examiner are:              

                                          2                                           





Page:  Previous  1  2  3  4  5  6  7  8  9  10  11  12  13  Next 

Last modified: November 3, 2007