Patent ID: 11931063
Assignee: MEDTRONIC VASCULAR, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A tissue-removing catheter as set forth in claim 13, wherein the logistic curve is based on the equation:, RPM
  =
  
   
    (
    
     
      Θ
      1
     
     +
     
      
       
        Θ
        2
       
       -
       
        Θ
        1
       
      
      
       1
       +
       
        e
        
         (
         
          
           T
           -
           
            Θ
            2
           
          
          
           Θ
           4
          
         
         )
        
       
      
     
    
    )
   
   ⁢
   
    (
    1000
    ), where T is an estimated torque at the motor drive and Θ1, Θ2, Θ3, and Θ4 are predetermined calibration values.