Calculus removing device for hepatobiliary surgery

Abstract

The invention discloses a calculus removing device for hepatobiliary surgery. The device comprises a metal cap, an outer-layer basket wire, an inner-layer basket wire, an outer-layer traction sleeve,an inner-layer traction steel wire, a sheathing canal, a Y-shaped handle, an outer traction ring and an inner traction ring; a rotary inner core is hinged in the metal cap; one end of the outer-layernet basket wire is fixed on the metal cap, and the other end of the outer-layer net basket wire is fixed on the outer-layer traction sleeve; one end of the inner-layer net basket wire is fixed on therotary inner core, and the other end of the inner-layer net basket wire is fixed on the inner-layer traction steel wire; one end of the outer-layer traction sleeve extends out of the sheath tube, andthe other end of the outer-layer traction sleeve penetrates out of the bottom of the Y-shaped handle and then is fixedly connected with the outer traction ring; and the upper end of the inner-layer traction steel wire is hinged into the sleeve wall of the outer-layer traction sleeve, and the other end of the inner-layer traction steel wire penetrates out of the bottom of the outer-layer traction sleeve and then is fixedly connected with the inner traction ring. The calculus removing device is of an inner-outer double-layer net basket wire structure, net basket wires in the inner-outer double layers can rotate relatively to increase the density of grids, and broken stones with smaller particle sizes can be grabbed. The double-layer net basket wire structure further improves safety of an operation.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a stone removal device for hepatobiliary surgery. Background technique [0002] The Stone Retrieval Basket is a commonly used stone retrieval helper in endoscopic retrograde cholangiopancreatography (ERCP) accessories. Stone extraction baskets are divided into wire baskets with guide wires, wire baskets without guide wires, and crushed stone extraction baskets. Among them, the integrated crushing basket is the ordinary gravel basket represented by Micro-Tech and the rapid exchange (RX) gravel basket represented by Boston Scientifi. Since the integrated mesh basket and quick-exchange mesh basket are more expensive than ordinary mesh baskets, some units and operating doctors may reduce their use due to cost issues. According to the shape of the basket, it can be divided into "hexagon", "diamond" and "spiral", that is, diamond, Dormia and spiral, among which Dormia basket is more co...

AI Technical Summary

Problems solved by technology

Baskets with poorer quality may not only fail to crush the stones but also cause the solder joints between the pulling wires and the basket wires to break during the stone removal process, causing the basket and stones to stay in the bile duct and be taken out later. Difficult, possibly requiring surgery

For some situations where the mesh basket is trapped in the hepatic and bile ducts, the existing method is to use the second stone extraction basket to cover the trapped mesh basket. However, this method requires a second radiography, which causes further harm to the patient and increases the risk of surgery. ;The second stone removal operation will prolong the operation time, and with the operation of the patient's body functions, the stranded wires will move, which will cause great difficulties for the stone removal operation

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