BSD-500 Hyperthermia System
The BSD 500 Hyperthermia System provides another tool in the palliative treatment of some types of progressive and recurrent cancer. It can be used in combination with HDR brachytherapy.
The FDA has approved the BSD 500 Hyperthermia System for use alone or in conjunction with radiation therapy in the palliative management of certain solid surface and subsurface malignant tumors (i.e., melanoma, squamous- or basal-cell carcinoma, adenocarcinoma, or sarcoma) that are progressive or recurrent despite conventional therapy. The BSD-500 has been approved for the treatment of surface and subsurface tumors through superficial and interstitial techniques. For complete information on the FDA approved Indications and use of the BSD-500, click here.
The BSD 500 microwave hyperthermia system is equipped with a 915 MHz power generator. The solid state generator has 8 channels (BSD 500-8) which can be independently adjusted in phase and amplitude. The 8 channel generator feeds into a 3 way power splitter. Therefore up to 24 applicators can be connected. There is also a 4 channel configuration available that provides up to 16 applicators through a 4 way power splitter.
The system itself is portable, space efficient and produces up to 400 watts of microwave energy in a single channel mode and up to 60 watts per channel in the eight channel mode. A high resolution touch-screen display is used for treatment planning, setup and monitoring during the procedure.
Superficial hyperthermia is used to non-invasively treat recurrent or progressive cancerous tumors located within a few centimeters of the surface of the body. Interstitial hyperthermia is used to treat recurrent or progressive cancerous tumors located below the skins surface.
Output frequency of 915 MHz (ISM frequency, requires no RF shielded enclosure) 8 independent channels deliver 0 to 60 watts of power. The forward power of all 8 channels are monitored, controlled and displayed by the computer. The computer will monitor and display the reflected power for each channel. In the sychronous mode, all 8 channels are driven by the same signal. The asynchronous mode allows each channel to be driven by independent sources. The power balance and phase offset of each channel is software controlled using the touch screen monitor. All eight channels can be multiplexed into a single output channel of 0 to 400 watts under computer control. The forward and reflected power from each of the 8 channels are summed together and displayed as total power.
Integrated thermal well
Standard NBS traceable temperature probe, accurate within 0.10 °C .
Constant volume water supply
Bolus temperature controller with a temperature range of 5 °C to 45 ° C
Free standing and mobile on swivel-locking casters. Operator station and component support arm are mounted on top of the equipment rack. The microwave generator and computer assembly are mounted within the enclosed rack. The rotating temperature and interstitial antennae interface is mounted on top of the chassis. Equipment size is 60 x 60 x 90 cm to table top. Approximately 150 cm to top of the monitor.
115 - 230 VAC +/- 10%, 50 - 60 Hz
Current consumption <15 amps
Four sensors are provided with the basic system. The interface accepts up to 8 sensors. A typical treatment set-up would utilize 12 to 15 ports for the microwave interstitial applicators and 1 to 4 ports for connections to the temperature sensors. Temperatures are displayed with resolution of 0.1 °C. - CK Inherently stable thermistor type sensors with non-metallic leads. These sensors are not perturbed by the microwave fields generated in the BSD500 system . The sensor diameter is approximately 1.1 mm and is located at the end of a 33 cm (13 in.) sealed high resistive lead . An extension cable is provided with a length approximately 2.1 m (7ft). Leakage currents are guaranteed to be less than 15 micro amps for any type of failure.