Biliary tract suction curette

Abstract

A biliary tract suction curette is disclosed, including an outer sheath, a push rod and a curette head. The outer sheath has a vertically through tubular structure. The lower part of the outer sheathis threadedly connected with a sealing cover. The center of the sealing cover is provided with a perforation. The push rod has an inner hollowed rod-like structure. The upper part of the push rod passes through the perforation of the sealing cover and extends into the outer sheath. The push rod and the outer sheath are coaxially arranged. The lower part of the outer sheath is connected with a negative pressure suction connecting joint. The curette head is connected to the upper end of the push rod. The curette head includes an inner core and four curved support rods. The inner core is coaxially inserted in the push rod. The inner core has an inner hollowed rod-like structure. The outer diameter of the inner core is equal to the inner diameter of the push rod. In summary, the invention is adevice dedicated for removing stones attached to the wall in a biliary tract. When the stones are removed, curettage is performed by curettage pieces on the support rods, the inner core is filled with water for flushing, and a negative pressure suction exists between the inner core and the outer sheath for suction, which can play a good role in removing the sediment-like stones attached to the wall in the biliary tract.

Description

technical field [0001] The invention belongs to the field of medical technology, in particular to a curette for biliary tract suction. Background technique [0002] Commonly used methods for gallstone removal include holmium laser lithotripsy, stone removal with forceps, and normal saline flushing. The first two methods are suitable for larger diameter stones, and the latter method is suitable for free smaller diameter stones. stones, and there is no good solution for the sediment-like stones attached to the wall. The existing plan is to use a scraper to scrape the wall stones, scrape off the wall stones, and then rinse them with normal saline, and then discharge them from the biliary tract by themselves or suck them out with a suction device; [0003] The existing plan is just an alternative, not a device specifically for stones attached to the wall of the biliary tract. The wall of the current scraper blade is relatively sharp, and it is easy to scratch the biliary tract....

AI Technical Summary

Problems solved by technology

[0003] The existing plan is just an alternative, not a device specifically for stones attached to the wall of the biliary tract. The wall of the current scraper blade is relatively sharp, and it is easy to scratch the biliary tract. After scratching the biliary tract, it may cause biliary fistula. Because the biliary tract can be expanded greatly, the existing plan does not fully expand the biliary tract when scraping, and cannot fully scrape off the wall stones. The existing plan has less contact with the biliary tract wall, and the scraping area is limited.

Existing solutions generally use saline to flush after scraping with a scraper. When flushing with saline, it is just a simple water injection pipe. There is no baffle in front, and it is easy to further flush the stones that have been scraped off into the liver to block the small bile duct. cause new complications

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