Hepatic portal vein catheter

Abstract

The invention discloses a hepatic portal vein catheter which comprises a catheter body, wherein a guide wire channel, a sensor groove and a lead groove are formed in the catheter body; a sensor whichis arranged in the sensor groove and used for measuring hepatic portal vein pressure; a lead which is arranged in the catheter body lead groove and is used for electrically connecting the sensor withexternal equipment of the catheter body; and coatings which are arranged on the outer surface of the wall surface of the catheter body and the sensing outer surface of the sensor and used for isolating direct contact between the catheter and external blood. The hepatic portal vein catheter integrates the pressure micro-sensor and the drug / electrical stimulation targeted treatment micro-channel atthe same time, hepatic portal vein pressure monitoring and targeted treatment can be carried out in a long-term implantation or short-term intervention mode, the sensor is directly integrated and packaged on the head of the catheter body, hepatic portal vein pressure can be directly measured, measurement feedback response is fast, accuracy is high, and popularization and application are easy. Meanwhile, the catheter is small in size, compact in structure and small in percutaneous puncture wound.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a hepatic portal vein catheter. Background technique [0002] Portal hypertension is a group of syndromes caused by persistently increased portal pressure, which is a typical chronic disease. Portal venous pressure increases when portal blood cannot pass through the liver and return to the inferior vena cava smoothly. Most are caused by liver cirrhosis, and a few are secondary to portal vein or hepatic vein obstruction and other factors of unknown cause. According to statistics, there are currently more than 20 million patients with liver cirrhosis in the world, of which more than 7 million patients are in my country, and the number of patients is increasing. [0003] The normal hepatic portal vein pressure gradient is 3-5mmHg, and the liver decompensation rate increases by 11% for every 1mmHg increase. If it exceeds 10mmHg, it is considered that varices are formed, and liver cir...

AI Technical Summary

Problems solved by technology

However, this kind of puncture operation is risky, and it is not conducive to postoperative follow-up. In addition, the measurement of blood flow pressure through the perfusion of normal saline in the catheter is an indirect measurement, with pressure loss and inaccurate results. Therefore, clinically, it is more inclined to directly Measure and keep track of pressure changes in real time

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