Disposable visible special sheath for percutaneous nephroscope

Abstract

The invention relates to the technical field of percutaneous nephroscope surgical instruments, in particular to a disposable visual special sheath for a percutaneous nephroscope. The disposable visualspecial sheath comprises a tearable outer sheath and a visual sheath core, wherein the tearable outer sheath is cylindrical, an outer sheath inner cavity is formed in the tearable outer sheath, tearing wings are arranged on the outer side of the upper portion of the tearable outer sheath, an inner cavity with a sheath core partition plate is formed in the visual sheath core, and the sheath core partition plate is arranged in the front-back direction and divides the inner cavity of the visible sheath core into a visible optical fiber channel and a working channel which are independent from each other in the left-right direction. The disposable visual special sheath for the percutaneous nephroscope is reasonable and compact in structure and convenient to use, the visual optical fiber is inserted into the visual optical fiber channel of the visual sheath core and adjusted to be in a visual state through the tearable outer sheath and the visual sheath core with the visual optical fiber channel and the working channel, an expansion guide wire is inserted into the working channel of the visual sheath core, expansion operation can be detected in real time, therefore, the built channels are easier to control and safer, complications are reduced, and the disposable visual special sheath has the characteristics of being safe, labor-saving, simple, convenient and efficient.

Description

technical field [0001] The invention relates to the technical field of percutaneous nephroscopic surgical instruments, and is a special sheath for disposable visible percutaneous nephroscope. Background technique [0002] Percutaneous nephrolithotomy is to establish a channel from the skin to the kidney in the patient's waist, insert the nephroscope into the kidney through it, and use laser, ultrasound and other lithotripsy tools to crush and remove the kidney stones. One of the conventional treatment methods for calculus, establishing a percutaneous renal channel is a very important step. Although a small number of hospitals conduct the whole process of channel expansion under X-ray fluoroscopy, most hospitals do not use X-rays, and the process of channel establishment is still in a blind state, and X-rays are harmful to patients and operating doctors. If the expansion is shallow, the nephroscope and dilator need to be replaced repeatedly. If the expansion is deep, it will...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a special sheath for disposable visible percutaneous nephroscope, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the expansion sheath cannot be observed in the existing percutaneous nephroscopic puncture expansion. Nephroscopes and dilators need to be replaced repeatedly if the puncture is too shallow, and medical accidents such as renal hemorrhage are likely to occur if the puncture is too deep

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