Multipolar radio frequency thermotherapy catheter

Abstract

The invention aims at providing a multipolar radio frequency thermotherapy catheter. The multipolar radio frequency thermotherapy catheter is used for being connected to a power source of a multipolarradio frequency thermotherapy instrument and comprises a catheter body and an electrode assembly; the electrode assembly comprises a plurality of electrode coils and radio frequency wires correspondingly connected to the electrode coils. The electrode coils are disposed on the outer wall of the catheter body at intervals in the axial direction of the catheter body and are not in contact with oneanother; one end of each radio frequency wire is connected with the corresponding electrode coil, and the other end of each radio frequency wire is used for being connected with a first controllable power source and / or a second controllable power source through a plug, so that the electrode coils constitute a radio frequency electrode. Since the electrode coils can be arrayed and combined with thefirst controllable power source and the second controllable power source, multiple different thermotherapy loops can be formed according to treatment needs, different thermotherapy temperatures and thermotherapy fields are obtained, and targeted thermotherapy is conducted on different lesions.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an application part of a multipolar radiofrequency hyperthermia instrument for treating benign prostatic hyperplasia (BPH) by means of radiofrequency hyperthermia—a multipolar radiofrequency hyperthermia catheter. Background technique [0002] Nowadays, the treatment of benign prostatic hyperplasia (BPH) with radiofrequency hyperthermia has become an effective treatment method commonly used in clinical practice. The treatment process must be equipped with a radiofrequency hyperthermia catheter as the application part of the radiofrequency hyperthermia instrument in order to complete the entire hyperthermia process. [0003] Generally, the structure of the radiofrequency hyperthermia catheter is that a single radiofrequency electrode or an electrode with a temperature measuring element is arranged at the front end of the radiofrequency hyperthermia catheter, and the electrode is ins...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the prior art are: Generally, the external auxiliary electrode is used to form a coupling circuit with human tissue, and the radio frequency current must pass through the human tissue between the two electrodes to generate radio frequency thermal effect in the prostatic urethra.

Even if the radiofrequency hyperthermia catheter is used to form a circuit through the radiofrequency electrode through the patient's prostatic urethral tissue, both of them have only a single electrode because the radiofrequency hyperthermia catheter and the matching radiofrequency hyperthermia device also has only one controllable radiofrequency power. This kind of heat therapy mode can only establish and maintain a heat field shape and temperature in the patient's prostatic urethra to deal with the treatment of patients with various degrees of benign prostatic hyperplasia (BPH)

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