Radio Frequency Cauterization Biopsy


The invention is a method and apparatus for using radio frequency (RF) energy to cauterize the needle track after percutaneous image-guided needle biopsy. The invention is designed to limit the risks of bleeding and needle track seeding that are inherent risks of any needle biopsy. The device uses a coaxial biopsy arrangement with the outer needle coated with a non-conducting polymer that insulates the needle shaft and the tissue immediately in contact with the shaft. As the needle is pulled back from the organ or tumor target, RF energy is applied to an exposed end portion of the probe, causing cauterization and coagulation of the tissue immediately adjacent to the needle track. Modular insertions could plug the needle into any cauterization or radiofrequency generator. A variation on the device could be used to limit bleeding after catheter placement into organs, such as for nephrostomy, biliary drainage, or transhepatic islet cell transplantation.

Inventors:

Bradford Wood (CC)  ➽ more inventions...

Christan Pavlovich (CC)  ➽ more inventions...


Intellectual Property:
US Application No. 60/370,965

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OTT Reference No: E-207-2001/1
Updated: Apr 1, 2004