As a result of microwave heating, arterial and capillary blood flows are accelerating; percentage of actively functioning capillaries in rectum and prostate gland walls increases in number; flow of lymph is increasing. After treatment sessions, blood circulation flow in the prostate gland becomes normalized; local tissue resistance is increased; the inflammatory process is terminated.
With combined method of transrectal microwave hyperthermia with transrectal vibratory massage, guarantees of successful prostatitis treatment are ever increasing.
Benign prostatic hyperplasia (adenoma) is now treated via minimally invasive transurethral microwave thermotherapy techniques. This method employs alternating electromagnetic radiation, in whose field ions and electric dipoles (i.e., water molecules) are forcibly oscillated, thus increasing cells temperature. At certain temperature and exposure level, malignant cells die.
At transrectal microwave hyperthermia, the rectum wall and the area of posterolateral surface of prostate gland is heated up to 41 to 43 °С.The effective heating layer depth is 1 to 2 cm.
The local action is applied by a miniature transducer of microwave energy. A special temperature sensor placed in the maximum emission area provides for continuous monitoring of the heating temperature and its maintaining at a set level. A special rectal catheter provides for cooling of the rectum wall and protects it from overheating.
The elevated, as compared to diathermy, temperature and the cyclic heating mode provide for higher therapeutic efficiency of the action.
The conducted treatment course results in normalization of the gland blood circulation, the local tissue resistance is increased, and the inflammatory process is terminated.
Unlike diathermy, darsonvalization, laser therapy, this method provides for stronger action on the patient and his safety.
The non-stop temperature monitoring process is controlled by aid of fiber-optic-based thermometric system. Focus of temperature control is aimed at targeted urethral wall, right in the middle of prostate gland where the microwave exposure is at its maximum.
At transrectal vibration massage, the action, being a mechanical oscillation at a frequency of 1 to 5 Hz and amplitude of 1 to 5 mm is transferred through the rectal wall to the area of posterolateral surface of prostate gland and the urinary bladder fundus.
Such action results in improvement of the drainage function of acinuses, the increase of the muscle tone of the prostate gland and rectum wall, enhancement of venous drainage, increase in the number of active capillars.
Vibratory stimulant activates the adrenal pituitary-cortex system and increases the blood content of glucocorticoid hormones of cortisone and hydrocortisone type with pronounced anti-inflammatory effect
The vibratory massage is done using a special rectal catheter.
To increase the efficiency of the action, thermotherapy by means of heating the fluid circulating in this catheter is conducted simultaneously with vibratory massage.
The fluid temperature can be adjusted within 37 to 42 °С.
The applied method of transurethral microwave thermotherapy enables conducting the treatment of prostate adenoma in an outpatient manner, during a single one-hour session.
This method is indicated for treatment of patients denied of surgical treatment because of contraindications to anaesthesia, and patients willing to escape surgical interference in case of no positive effect from pharmacotherapy.
The therapeutic effect is conditioned by adenomatous tissue modification after its heating to 45…55 °С.
The action is applied locally by a microwave transducer inserted in the prostate gland area with an urethral catheter that cools urethra during the treatment session.
The treatment session is conducted automatically according to a program. The physician can make corrections during the session. The current values of temperature and power are displayed on the screen.
The temperature is continuously monitored by an optical thermometric system. The temperature is monitored in the center of the prostate gland in the area of the maximum microwave action at the level of the urethral wall. To ensure the patient’s safety, the rectal wall temperature is also monitored with three temperature sensors.
|Operating frequency, MHz||915±15 MHz|
|Range of Output Power Adjustable per 5W- Discretion Step||0 to80 W|
|Maximum Absolute T° Measurement Error||0.2°C|
|Vibration amplitude, mm||1 to 5 mm|
|Vibration frequency, Hz||1 to 5 Hz|
|Overall dimensions, mm||565х940х425 mm|
|Maximum Weight of Apparatus||70 kg|
|Maximum Power Consumption from 220VAC, 50Hz Mains Supply||950 VA|
|Single-use urethral catheter:|
|- working part diameter, mm||6,5|
|- working part length, mm||500|
|Re-usable rectal catheters:|
|- working part diameter, mm||20|
|- working part length, mm|| 120