Large-channel percutaneous spinal endoscope suitable for microsurgical fusion cage

Abstract

A large-channel percutaneous spinal endoscope suitable for a microsurgical fusion cage includes a working sheath assembly and an endoscope. A channel portion of the endoscope includes an instrument channel, water inlet channels, an imaging optical channel and lighting optical channels, wherein the central axis of the instrument channel and the central axis of an outer working pipe coincide, and afusion cage assembly is inserted in the body cavity through the instrument channel; the water inlet channels are disposed on the left side and the right side of the upper portion of the instrument channel; the imaging optical channel is disposed under the instrument channel, an imaging optical system is integrated in the imaging optical channel, and the imaging optical channel extends into an endoscope body; the lighting optical channels are distributed on the left side and the right side of the imaging optical channel in a surrounding mode, and the lighting optical channels extend into the endoscope body and are full of densely-arranged lighting optical fibers. The outer working pipe of the endoscope can be inserted in a working sleeve pipe of the working sheath assembly; after the fusioncage and a regulating tool are assembled and inserted, the endoscope rotates with the fusion cage with the axis and the regulating tool as the fixed axis, and the implantation conditions of the fusion cage can be observed in a maximum surgical field of vision. The implantation accuracy is improved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a large-channel percutaneous spinal endoscope suitable for an endoscopic fusion device. Background technique [0002] In recent years, with the development and popularization of minimally invasive surgery, surgical endoscope systems have been widely used in orthopedics, spine surgery, gynecology, urology and neurosurgery. The percutaneous spinal endoscope usually has a built-in instrument channel. The eyepiece is designed with an oblique angle, which is convenient for using thick and powerful surgical instruments. The illuminating light channel usually consists of a beam of light, so that illuminating light generated by an external light source is introduced and used to illuminate the surgical field of view. [0003] Intervertebral fusion device, as an orthopedic implantable medical device, is one of the main implants for fusion of adjacent intervertebral spaces in the spine. ...

AI Technical Summary

Problems solved by technology

[0008] As we all know, the distribution position of the instrument channel of the pipeline directly affects the position where the surgical instrument enters the human body in the channel, and there is a certain viewing angle in the endoscope; and there are some instruments used for minimally invasive surgery in the prior art. , such as patent document CN201520391619.X, a minimally invasive surgical instrument for the treatment of spinal canal stenosis. image 3 It can be seen from the figure that the channel distribution of the instrument is offset. If the axial channel used for inserting the ultrasonic osteotome in this application is inserted into the fusion device of the present application, the limited viewing angle will make it impossible to implant the fusion device. After the fusion device is inserted into the offset instrument channel, if the surgical instrument is forcibly rotated in order to expand the surgical field of view, the fusion device in the channel will also move, which will cause great errors in the operation. serious harm to patients

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