gastrointestinal punch

Abstract

The invention discloses a gastrointestinal tract perforator, and relates to the technical field of a medical instrument. The gastrointestinal tract perforator comprises a perforator body, a cutter head, a pneumatic motor and an airflow pipeline, wherein the perforator body comprises a casing and a tubular body connected with the casing; the cutter head comprises a sleeve and a cutterhead arrangedin the sleeve; the back end of the sleeve is detachably connected with the front end of the tubular body; a first suction hole is formed in an end cap of the sleeve; a second suction hole is formed inthe cutterhead; a cutter blade is hinged onto the end surface of the cutterhead; the end surface of the cutterhead is also provided with a cutter blade driving mechanism; the pneumatic motor is arranged in the casing; the airflow pipeline comprises a first airflow branch path, a second airflow branch path and a three-way joint; tissues in a position to be perforated are sucked into the first suction hole by using negative pressure suction force in the first airflow branch path, and are extruded out through the second suction hole; and a valve arranged in the second airflow branch path is opened, and the pneumatic motor operates and drives the cutterhead to rotate. Under the effect of centrifugal force, the cutter blade driving mechanism drives the cutter blade to rotate around a hinging point to intersect with the second suction hole, so that the tissues extruded out from the second suction hole are cut off, and the perforation is completed.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a puncher for the gastrointestinal tract. Background technique [0002] Electrotome is currently a commonly used punching tool in laparoscopic surgery. Electrotome punching will form eschar at the cutting site and cause lateral thermal damage. At the same time, smoke will be generated during the cutting process of the electric scalpel, which will affect the operative field. Ultrasonic scalpel has no smoke, less lateral thermal damage and no eschar, less pollution to the surgical environment and is conducive to postoperative recovery, but the price of ultrasonic scalpel equipment is high, the instrument is heavy, and the blade needs to be adjusted frequently during use. For wiping, the ease of operation still needs to be improved. [0003] In some open operations, punching instruments with purely mechanical structures are widely used. For example the disclosed heart punc...

AI Technical Summary

Problems solved by technology

For example the disclosed heart punching scalpel of Chinese patent document CN204049774U, although this document claims that the above-mentioned heart punching scalpel can also be used for the medical operation of other organs, must open a cross shape at the punching position earlier when punching with this device. Incision, then pass the cross-shaped positioning head of the locator through the aforementioned incision, and finally rotate the perforation knife so that the perforation knife moves downward to complete the cutting. Limited by the size of the abdominal incision during laparoscopic surgery, the above-mentioned device is practically used Inconvenient to operate

Another example is the medium and small artery puncher disclosed in Chinese patent document CN201200451Y. Its working principle is similar to the above-mentioned heart punching scalpel. When using it, it is necessary to cut a small hole at the punching part, and then insert the punching head into the hole. , during the process of pressing the handle from position A to position B, the dowel rod is driven by the support rod and the hinge pin, and then the punching head is driven to complete the punching. This punch also has the inconvenience of operation when it is applied to laparoscopic surgery. defect

In summary, due to the limitation of the operating space, the above two purely mechanical punches are not suitable for the occasions where the gastrointestinal tract needs to be punched in laparoscopic surgery

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