Large-channel and direct-inserting endoscope

Abstract

The invention discloses a large channel straight-through endoscope, comprising: an insertion part, including an insertion catheter and a tip head fixed at the front end of the insertion catheter; an operation part, connected to the end of the insertion part, including a handle and a certain angle with the handle The handle of the handle; the rear end of the handle of the operating part is provided with an instrument inlet, the inside of the handle and the inner cavity of the insertion catheter are pierced with an instrument catheter, and the acute angle between the section axis of the instrument inlet and the section axis of the instrument catheter in the handle is less than 15 degrees. The large channel of the present invention leads directly into the endoscope, and the optical fiber does not need to be bent during the process of extending from the instrument entrance into the instrument channel, which effectively avoids damage to the optical fiber. The instrument is inserted into the instrument catheter for operation at the same time, which shortens the operation time, improves the operation efficiency, and has high practical value.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a large channel straight insertion endoscope. Background technique [0002] In the field of medical devices, there are separate flexible ureteroscopes and rigid ureteroscopes. Rigid ureteroscope is easy to operate and can easily pass through the ureter to reach the renal pelvis orifice, but because the front end of the rigid ureteroscope cannot be bent, it cannot enter the renal pelvis; while flexible ureteroscope soft nephrolithotomy is that the urinary catheter enters the kidney and can reach the urinary system Any position, non-invasive removal of kidney stones directly outside the body. Surgical steps: Insert a rigid ureteroscope through the external opening of the urethra, check for abnormalities in the bladder, find the right ureteral opening, insert a zebra guide wire, and insert a soft endoscope under the guidance of the zebra guide wire to expand the outer sheath, and...

AI Technical Summary

Problems solved by technology

The utility model provides a multi-purpose endoscope with automatic water circulation in the operation process, which can be used in conjunction with various lithotripsy systems, has good safety, and can effectively relieve patients' pain; it solves the problem of the lithotripsy process in the prior art Among them, the water circulation is inconvenient, it cannot effectively relieve the pain of patients, and the technical problems of poor adaptability

[0006] However, the endoscope involved in the above-mentioned prior art is easy to damage the optical fiber when the optical fiber is inserted, and the internal size of the instrument channel is limited, and it is impossible to insert two or more medical instruments through one instrument channel at the same time to perform surgical operations at the same time. low efficiency

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