Needle-shaped minimally invasive interventional duct-inserting device for cholangiopancreatography

Abstract

The invention discloses a needle-shaped minimally invasive interventional duct-inserting device for cholangiopancreatography and belongs to the technical field of medical instruments. The needle-shaped minimally invasive interventional duct-inserting device mainly comprises a novel needle-shaped knife main body, a guide wire propelling unit and a foot-controlled washing unit. The novel needle-shaped knife main body comprises a propelling rod, a handle, an electrode plug and a multi-cavity duct. The multi-cavity duct comprises a guide wire cavity inlet, a washing liquid cavity inlet, a radiography liquid cavity inlet, a guide wire cavity, a knife wire cavity, a radiography liquid cavity and a washing liquid cavity. Guide wires penetrate into the guide wire cavity, knife wires are arranged in the knife wire cavity, and a knife wire clamping head is arranged at the remote end of the knife wire cavity; and the guide wire propelling unit is arranged on the outer guide wires in a penetrating and sleeved mode, and the foot-controlled washing unit is connected with the washing liquid cavity inlet. In short, the needle-shaped minimally invasive interventional duct-inserting device for cholangiopancreatography is simple in structure, convenient to use, high in duct-inserting success rate, small in damage and low in complication occurrence rate.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a needle-shaped minimally invasive interventional intubation device for cholangiopancreatography. Background technique [0002] Successful intubation is the precondition for ERCP diagnosis and treatment activities. For patients with difficulty in intubation, pre-cutting the duodenal papilla or "opening the window" with a needle knife can significantly improve the success rate of intubation (99.8%). The guide wire is the basis of diagnostic and therapeutic ERCP, and it is a tool used to achieve and maintain access to the pancreaticobiliary duct and to implant and replace other accessories. Its important role is more prominent in difficult intubation. In some cases, it is still difficult to intubate after pre-cutting or "windowing". At this time, super-selection of the guide wire is required. Guidewire insertion into the sphincterotomy for biliary cannulation c...

AI Technical Summary

Problems solved by technology

In many cases, the best timing for intubation is missed by exchanging accessories, and it is very difficult to find the opening of the bile duct again

Moreover, when ordinary needle-shaped knife electrocoagulates hemostasis, the knife wire must be retracted to inject liquid to rinse and expose the bleeding point, but when the knife wire is extended again to prepare for electrocoagulation of the bleeding focus, the vision is blurred by the surrounding bleeding, blindly excessive electrocoagulation Complications will increase (such as delayed bleeding caused by ulcer formation at the site of excessive electrocoagulation after surgery), and even duodenal perforation, etc.

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