Needle kit and method for microwave ablation, track coagulation, and biopsy

A method of ablating an abnormality in tissue, the method comprising the steps of:

• providing a system for ablation of tissue comprising:
• a microwave antenna,
• a transmission line coupled to the microwave antenna, and
• a microwave power source, wherein the transmission line is adapted to electrically couple to the microwave power source;
• introducing the distal end of the microwave antenna into tissue containing an abnormality to be ablated, whereby an insertion track is created proximal of the abnormality;
• ablating the abnormality by applying microwave power to create a microwave field suitable for ablation of the abnormality in the tissue containing the abnormality;
• altering the microwave field to produce a field suited for track coagulation;
• and
• coagulating at least a portion of the insertion track.

A method of ablating abnormalities in tissue, the method comprising the steps of:

• introducing a delivery needle into a patient until the delivery needle is suitably positioned with respect to a tumor;
• displacing a biopsy needle within a lumen of the delivery needle until a distal end of the biopsy needle protrudes from a distal end of the delivery needle;
• performing a biopsy;
• removing the biopsy needle from the delivery needle;
• detachably positioning an ablation needle through the delivery needle into the tumor;
• applying microwave power to the ablation needle to ablate the tumor;
• removing the ablation needle from the tumor;
• and
• removing the delivery needle from the patient.

A method of ablating abnormalities in tissue, the method comprising the steps of:

• introducing a delivery needle into a patient until the delivery needle is suitably positioned with respect to a tumor;
• detachably positioning an ablation needle through a lumen of the delivery needle into or adjacent to the tumor;
• applying microwave power to the ablation needle to ablate the tumor;
• and
• removing the ablation needle from the patient while continuing to apply microwave power to the ablation needle.