Transverse calculus removing mesh basket

Abstract

A transverse calculus removing mesh basket belongs to the technical field of medical instrument manufacturing. The device comprises an outer sheath tube, a net basket and a traction part. The outer sheath tube is a double-channel tube and comprises a channel 4 and a channel 5; a handle is arranged at the tail of the outer sheath tube; the channel 5 is L-shaped and is connected with a radiography connector on the handle; and threads are arranged on the surface of the connector. The net basket comprises a head, a body and a handle; the head is composed of four steel wires; two ends of the head are connected to form a rhombus shape, an arc shape, a water drop shape or a spiral shape; the body is a steel wire connecting rod and is connected with the four steel wires of the head through the channel 4; the handle is a single-channel metal pipe and is internally provided with a channel 11; and the outer wall of the metal pipe is connected with the steel wire connecting rod. The traction partcomprises a head, a connecting rod and a handle, and the head is a single steel wire. The transverse calculus removing mesh basket has the advantages that formation of the mesh basket can be changed through the traction part, and calculus can be extracted more easily.

Description

technical field [0001] The invention belongs to the technical field of medical device manufacturing, and relates to a minimally invasive medical technology and an operation device, which are used for removing stones under a duodenoscope, in particular to a transverse stone removal mesh basket catheter. Background technique [0002] Choledocholithiasis is a common and frequently-occurring disease in my country. Blockage of the common bile duct by stones can induce complications such as acute cholangitis, obstructive jaundice, and acute biliary pancreatitis. Symptoms include chills, fever, abdominal pain, and jaundice. Cause shock, long-term calculus stimulation has the risk of cholangiocarcinoma, which is an important disease that endangers human health. [0003] Endoscopic retrograde cholangiopancreatography is currently the first-line treatment for choledocholithiasis, especially suitable for patients with contraindications to general anesthesia for biliary tract exploration...

AI Technical Summary

Problems solved by technology

If the following conditions exist, it will be difficult to remove the stones smoothly: 1. There are multiple stones in the common bile duct. During the process of dragging the basket, it is difficult for the wires of the basket squeezed by the stones to be in an ideal state, and the adjacent wires are easy to be crushed. Squeezed together, the stones cannot be put into the basket; 2. The diameter of the common bile duct is greater than 2cm, and the stones can easily pass through the gap between the basket and the wall of the bile duct, making it difficult to trap the stones in the basket; 3. When the common bile duct is less than 6mm , the released wires of the basket are attached to each other, so that the basket cannot be opened, so the stones cannot be set

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