Dual lumen device for biopsy and treatment of breast tumors and method for use

Abstract

A device for diagnosis and treatment of tumors and lesions within the body. A cannula adapted to apply suction through the lumen of the catheter to the tumor or lesion is described. The lumen has a self sealing valve through which a cryoprobe is inserted while the suction is being applied. The cryoprobe is then inserted into the lesion, and operated to ablate the lesion.

1 . A system for treating or sampling a mass of tissue within a human patient, said device comprising: 
 a cannula having a distal end adapted for insertion into the body of the patient, a proximal end, and a first lumen extending through the cannula and defining a first lumen distal opening in the cannula, and a second lumen extending through the cannula and defining a second lumen proximal opening and a second lumen distal opening in the cannula, said second lumen distal opening being proximate the first lumen distal opening;    a fitting disposed on the proximal end of the cannula, said fitting adapted for connection to a vacuum source to the first lumen;    at least one elongate medical device sized and dimensioned to pass into the second lumen through second lumen distal opening and extend beyond the distal end of the cannula, said elongate medical device having a distal tip adapted for penetration into body tissue proximate the distal end of the cannula.    
     
     
         2 . The system of  claim 1  wherein the elongate medical device is a biopsy needle.  
     
     
         3 . The system of  claim 1  wherein the elongate medical device is a cryoprobe.  
     
     
         4 . The system of  claim 1  wherein the elongate medical device is an ablation device suitable for ablation of the mass.  
     
     
         5 . The system of  claim 1  further comprising an additional elongate medical device sized and dimensioned to pass into the first lumen through first lumen distal opening and extend beyond the distal end of the cannula.  
     
     
         6 . A method for treating or sampling a mass of tissue within a human patient, said method comprising: 
 providing a cannula having 
 a distal end adapted for insertion into the body of the patient, a proximal end, and a first lumen extending through the cannula and defining a first lumen distal opening in the cannula, and a second lumen extending through the cannula and defining a second lumen proximal opening and a second lumen distal opening in the cannula, said second lumen distal opening being proximate the first lumen distal opening;  
 a fitting disposed on the proximal end of the cannula, said fitting adapted for connection to a vacuum source to the first lumen;  
 an elongate medical device sized and dimensioned to pass into the second lumen through second lumen distal opening and extend beyond the distal end of the cannula, said elongate medical device having a distal tip adapted for penetration into body tissue proximate the distal end of the cannula;  
   inserting the cannula into the body of the patient so that the distal end of the cannula is proximate the mass;    selectively drawing the mass toward the cannula by applying suction to the first lumen of the cannula;    inserting the elongate medical device through the second lumen of the cannula and into the vicinity of the mass;    operating the elongate medical device treat or sample the mass.    
     
     
         7 . The method of  claim 6  further comprising the steps of: 
 providing the elongate medical device in the form of a cryoprobe;    extending the distal tip of the cryoprobe beyond the distal tip of the cannula; and    operating the cryoprobe to treat the mass.    
     
     
         8 . The method of  claim 7  further comprising the step of: 
 locating the distal tip of the cryoprobe such that the mass is superficial to the distal tip upon extension from the distal end of the cannula.