Radiofrequency ablation

Tumor ablation therapy is a minimally invasive local treatment technique that does not require surgery. Generally, under the guidance of imaging equipment such as ultrasound, CT, etc., an ablation needle is inserted through the skin into the interior of the tumor. Through this specially designed needle, the tumor is heated, frozen, electrocuted, or injected with chemical drugs, causing tumor cells to coagulate, necrotize, and lose their activity. The tumor is locally destroyed to achieve the goal of "removing" the tumor. This treatment method can accurately target tumors and protect surrounding normal tissues to the greatest extent possible, greatly reducing damage to the patients entire body.

Principle:
Radiofrequency ablation is the use of radiofrequency current to act on tumor tissue, causing ions inside the tumor tissue to oscillate at high speed and rub against each other, converting radiofrequency energy into heat energy. When the local temperature reaches 60 ℃ -100 ℃, tumor cells undergo coagulative necrosis, achieving the goal of tumor inactivation.
Applicable situation:
1. Solid tumors such as liver cancer and lung cancer with a diameter less than 3 centimeters.
2. Benign tumors and malignant tumors that are not suitable for traditional surgery in the early stage.
3. Postoperative recurrence and advanced malignant tumors can be evaluated for palliative ablation.
Technical features:
1. It has been applied earlier in clinical practice, with relatively mature technology, wide application, and sufficient clinical evidence for its therapeutic effect.
2. Minor trauma, fast postoperative recovery, and generally able to get out of bed and move around on the second day after surgery.
For larger tumors (diameter>5 cm), multiple/multi needle ablation is required.
4. Heat sink effect (heat sink effect: the phenomenon where the flowing blood takes away some heat when the target tissue is adjacent to a large blood vessel (inner diameter ≥ 3 mm)), leading to incomplete ablation.

Model specification table:

Number	Model	Monopolar/Bipolar	Outer diameter 0D（mm）	Length L2（mm）	Radiation zone length L1（mm）	Handle type
1	XO-R1715A	bipolar	1.4±0.2	150±10	15±10	straight hand lever
2	XO-R1715B	bipolar	1.4±0.2	150±10	15±10	L handle
3	XO-R1615A	bipolar	1.6±0.2	150±10	17±10	straight hand lever
4	XO-R1615B	bipolar	1.6±0.2	150±10	17±10	L handle
5	XO-R1515A	bipolar	1.8±0.2	150±10	20±10	straight hand lever
6	XO-R1515B	bipolar	1.8±0.2	150±10	20±10	L handle
7	XO-R1415A	bipolar	2.0±0.2	150±10	20±10	straight hand lever
8	XO-R1415B	bipolar	2.0±0.2	150±10	20±10	L handle