Tips dedicated puncture needle

Abstract

The invention provides a special puncture needle for TIPS. The special puncture needle comprises a puncture part and a long and thin tubular main body, wherein a reference end face is arranged at oneend of the tubular main body; the puncture part is located at one end, close to the reference end face, of the tubular main body and comprises a plurality of inner tubes; every two adjacent inner tubes are connected end to end in a sleeved mode; a sleeve tube located at an outermost side position is inserted into the tubular main body in a sliding mode; a telescopic end face is arranged at one end, far away from the tubular main body, of each inner tube; and a control piece is installed at one end, far away from the reference end face, of the tubular main body and used for driving the inner tubes to slide along the axis of the tubular main body, so the plurality of telescopic end faces and the reference end face are coplanar to form a feeding puncture head, or the plurality of telescopic end faces are separated from one another to form a conical puncture head. The special puncture needle for the TIPS provided by the invention is convenient to puncture, facilitates reducing the puncturedifficulty and reduces the puncture risk.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a special puncture needle for TIPS. Background technique [0002] The TIPS operation is --- transjugular intrahepatic portocaval stent shunt (transjugular intrahepatic stent portosystemic shunt) is a new interventional radiology treatment for portal hypertension and upper gastrointestinal bleeding. It uses the principle of surgical shunt, through the use of a series of interventional devices, to establish an artificial shunt channel between the hepatic vein and portal vein in the liver parenchyma, thereby reducing portal pressure, reducing or eliminating esophageal variceal bleeding caused by portal hypertension , ascites and other symptoms. [0003] The key point of the TIPS operation is the puncture from the intrahepatic vein to the portal vein, that is, after the puncture needle punctures the hepatic vein, it punctures the portal vein and then establishes a connecting channel...

AI Technical Summary

Problems solved by technology

However, in some patients, the liver tissue is sclerotic. In the process of puncturing with the existing puncture needle, a relatively large force is required to complete the puncture, which is difficult to puncture, and it is easy for the doctor to increase the puncture force Puncture the liver tissue as a whole, causing harm to the patient

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