Nasopharyngeal tumor cryoablation needle with adjustable ablation range

• Main Authors: LIU YOUPING, FENG ZHENGKAI, WU WENBIN, CHEN MINGYUAN
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The invention relates to the technical field of medical instruments, and discloses an ablation-range-adjustable nasopharyngeal tumor cryoablation needle which comprises an ablation catheter, a bent joint port is formed in the outer portion of the ablation catheter, the interiors of the bent joint port and the ablation catheter are hollow, and heat insulation layers are arranged on the inner walls of the ablation catheter and the bent joint port. A liquid nitrogen catheter is fixedly embedded in the inner wall of the bent joint port, an ablation needle body is movably connected into the liquid nitrogen catheter, the ablation catheter is integrally inserted into the nasal cavity of a patient, the bent joint port is driven by the ablation catheter to enter the tumor position in the nasal cavity of the patient, the outer sleeve is held at the moment, and the line wheel is driven to rotate in the outer sleeve. The ablation needle body moves outwards from the inside of the liquid nitrogen catheter to make contact w