Biliary tract cytology brush based on PTC approach and use method thereof

Abstract

The invention relates to the technical field of medical instruments, and discloses a biliary tract cytology brush based on a PTC approach and a using method thereof. The biliary tract cytology brush enters a bile duct after percutaneous liver puncture, the biliary tract cytology brush comprises a sheathing canal, a drug coating balloon arranged in the circumferential direction is arranged on the outer wall of a first end of the sheathing canal, the drug coating balloon communicates with an external pressure pump, the pressure pump can drive the drug coating balloon to expand in the radial direction, the treatment drugs can be attached to the outer wall of the drug coating balloon, the treatment drugs comprise hemostatic drugs; a brush rod, which is arranged in the sheathing canal in a penetrating manner, a brush head is arranged at one end, close to the drug coating balloon, of the brush rod, and the brush head is used for brushing tumor tissues; and a supporting guide wire, which is arranged in the sheathing canal in a penetrating manner and is used for supporting the brush rod. According to the biliary tract cytology brush, the biliary tract biopsy sampling path can be shortened, the biliary tract cancer biopsy positive rate can be increased, bleeding can be stopped in time on a bleeding part, and the technology and the product are easy to master, safe, reliable and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a biliary cell brush and its application method. Background technique [0002] Cholangiocarcinoma refers to malignant tumors originating from extrahepatic bile ducts, including the bile ducts from the hilar region to the lower end of the common bile duct. The etiology may be related to bile duct stones, primary sclerosing cholangitis and other diseases. Its diagnostic methods include various methods such as blood and imaging. According to clinical manifestations combined with laboratory tests and imaging, the diagnosis can be further confirmed, but pathological diagnosis cannot be achieved. [0003] The development of ERCP provides a new method for the pathological diagnosis of cholangiocarcinoma. At present, almost all biliary pathology of ERCP is obtained by cell brushing. The cell brush is brushed up and down on the suspicious lesions of the bile duct through the guid...

AI Technical Summary

Problems solved by technology

The cell brush is brushed up and down on the suspicious lesions of the bile duct through the guide wire. Due to the long path of the cell brush entering and exiting the bile duct, the operator has poor controllability of the cell brush under the ERCP approach, and often cannot obtain a satisfactory positive rate, and it is easy to cause bleeding. , especially for patients with esophageal and gastrointestinal anatomical variations or after surgery, the gastroscope cannot reach the duodenal papilla, resulting in ERCP failure

In addition, biopsy forceps are used for biopsy of biliary system tumors under the PTC approach. Since biliary system tumors grow around the tube, the biopsy forceps can only be clamped longitudinally, so the positive rate of brushing is extremely low and the risk of bile duct bleeding is extremely high

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