Laparoscopic Port with Microwave Rectifier

The radiation detector according to claim I, wherein the receiving antenna further comprises:

• two dielectric substrates each having a top surface and a bottom surface;
• each piece of metal is disposed on the top surface of each dielectric substrate;
• and
• a grounding member disposed on the bottom surface of each dielectric substrate, wherein the antenna and grounding members are electrically insulated by the dielectric substrate.

A microwave antenna assembly, comprising:

• a hub adapted to couple the microwave antenna assembly to a microwave generator;
• a radiating section coupled to the hub through a feedline;
• an inflatable stop surrounding the feedline, wherein the inflatable stop is inflated when the feedline is placed within an abdomen of a patient to prevent the radiating section from inadvertently withdrawing from the abdomen;
• and
• a radiation detector disposed on the microwave antenna assembly near the radiating section, the radiation detector comprising:
• a receiving antenna adapted to receive microwave energy, wherein the receiving antenna is formed from two pieces of metal externally attached to the feedline within the abdomen;
• at least one rectifier coupled between the pieces of metal adapted to rectify at least a portion of the microwave energy that resonates in the abdomen;
• and
• a filter coupled to the at least one rectifier and adapted to convert the rectified microwave energy into a detection signal.

A method for detecting microwave energy, the method comprising:

• receiving resonant microwave energy from an insulfated abdomen with a receiving antenna;
• rectifying at least a portion of the microwave energy through at least one rectifier coupled to the receiving antenna;
• and
• filtering the rectified microwave energy through a filter coupled to the at least one rectifier to convert the rectified microwave energy into a detection signal.