Combined nephroscope

Abstract

The invention discloses a combined nephroscope which comprises a core nephroscope and an expander for visual expansion. The core nephroscope comprises a photographing system, a light source system anda first passage, and the expander is used for being sleeve-fitted with the core nephroscope for visual expansion and comprises an expander inner core and an expander outer sheath. By adopting the combined nephroscope, blind expansion in conventional art is completely avoided, and inserting depth of the expander and the core nephroscope can be observed visually, so that the combined nephroscope isenabled to accurately reach a calculous position in a kidney without going too shallow or too deep. Massive hemorrhage caused by damage to blood vessels of a patient is avoided completely, perforation is avoided, suffering of the patient is relieved, bodily damage to the patient is reduced, and the combined nephroscope is short in operative time, leads to little hemorrhage, small wound and quickrecovery of the patient and can be widely used in various kidney stone operations.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to a nephroscope for checking, diagnosing and treating bladder or kidney. Background technique [0002] Percutaneous nephroscope lithotripsy (PCNL) is a modern minimally invasive technique for the treatment of kidney stones. Percutaneous nephroscope lithotripsy (PCNL) is to create a channel from the skin to the kidney in the waist, and insert the nephroscope through this channel. Kidney, using laser, ballistic, ultrasound and other lithotripsy tools to crush the kidney stones and take them out. But present nephroscope has following defect: [0003] 1. Currently, the existing nephroscopes are divided into ultra-fine nephroscopes (F7-8), thin nephroscopes (F12-16) and standard nephroscopes (F18-24) according to their diameters. Each type of nephroscope can only complete corresponding operations Indications, which type of nephroscope to use depends on the size and location of kidney stones an...

AI Technical Summary

Problems solved by technology

Each type of nephroscope can only complete stones with corresponding indications, and there is no universal nephroscope suitable for all surgical indications

[0004] 2. At present, all kinds of nephroscopes have only one channel, which is shared by the water inlet channel and the operation channel.

When ultra-fine nephroscopes (F7-8) and fine nephroscopes (F12-16) are used to operate on kidney and ureteral calculi with corresponding indications, due to the limitation of the diameter of the nephroscope, the water inlet and operation channel are relatively thin, and when broken When stone tools (holmium laser, ballistic probe) or lithograph forceps and other operating equipment enter the water inlet and operation channel, the water flow will be affected, resulting in unclear surgical field of view, affecting surgical safety and surgical efficiency

[0005] 3. At present, the function of the nephroscope is single, and it is only used for crushing and removing stones

For example, there is no negative pressure suction function, and the renal collecting system cannot be kept in a low-pressure state during the operation. When dealing with infectious kidney stones, it may lead to serious complications such as urogenous sepsis and even patient death.

[0006] 4. At present, all kinds of nephroscopes do not have the function of establishing a stone extraction channel under direct vision. When performing nephrolithotomy surgery, urologists first need to establish a stone extraction channel from the skin to the kidney collection system. The current stone extraction channel establishment method is one One is done under X-ray monitoring, the other is blind expansion (blind expansion) based on feel and experience

[0007] ① Too shallow dilation: the expansion sheath cannot reach the renal collecting system, resulting in the loss of the stone removal channel and even the failure of the operation;

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