Percutaneous Cannula Assembly

Abstract

The dual syringe with percutaneous cannula is a medical device for harvesting and transferring cells for autologous transplantation without the requirement of a surgical setting or ambulatory care. The dual syringe is a closed sterile system that allows for the harvesting syringe to harvest the cells/tissue from a first location of a patient which is then centrifuged to aggregate the cells. The aggregated cell pellet is transferred to a transfer syringe. The cell pellet is then reinjected by the transfer syringe into the patient at a second location for therapeutic purpose. The percutaneous cannula permits insertion of a cannula, with the assistance of a needle, without the need of a surgical incision or trocar.

We claim: 
     
         1 . A percutaneous cannula assembly comprising:
 a needle hub comprising a syringe attachment member, cannula attachment member, and a hollow needle extending from said cannula attachment member; and   a cannula having an opening on one end and an attachment member on the opposing end wherein said attachment member of said cannula is connected to said cannula attachment member of said needle hub; and said needle of said needle hub is positioned within said cannula and extends through said opening of said cannula.   
     
     
         2 . The percutaneous cannula assembly of  claim 1  wherein said cannula is detachable from said needle hub. 
     
     
         3 . The percutaneous cannula assembly of  claim 1  wherein said syringe attachment member of said needle hub is attachable to and detachable from a syringe. 
     
     
         4 . The percutaneous cannula assembly of  claim 3  wherein said hollow needle is in fluid communication with said syringe. 
     
     
         5 . The percutaneous cannula assembly of  claim 1  wherein said cannula further comprises at least one port along the longitudinal axis. 
     
     
         6 . The percutaneous cannula assembly of  claim 1  wherein said cannula tapers to said opening. 
     
     
         7 . The percutaneous cannula assembly of  claim 2  wherein said cannula is attachable to and detachable from said syringe. 
     
     
         8 . The percutaneous cannula assembly of  claims 1  or  claim 7  wherein said cannula is in fluid communication with said syringe.