Endoscopic biopsy apparatus

Abstract

The invention discloses an endoscopic biopsy apparatus which comprises a handle assembly, an outer tube, a limiting piece, a needle tubing and an inner core wire. The handle assembly is composed of an adjustment handle, an outer tube handle, a limiting ring, an operation handle, a scale core rod, a needle tubing operation handle and an inner core wire control handle. The adjustment handle, the limiting ring and the operation handle are all arranged on the scale core rod and connected into a whole through the scale core rod. The outer tube handle is arranged in the adjustment handle and connected with the outer tube. The outer tube is connected with the scale core rod. The needle tubing operation handle is connected with the operation handle in a screwed mode. The operation handle is connected with the limiting piece in an inserted mode. The needle tubing is composed of a needle point section at the far end and a needle body section behind the needle point section. The needle tubing is located in the outer tube. The needle point section penetrates out of the far end of the outer tube. The needle body section is fixedly connected with the needle tubing operation handle. The inner core wire penetrates into the needle tubing. The far end of the inner core wire goes beyond the needle point end, and the near end of the inner core wire is connected with the inner core wire control handle. The biopsy operation is greatly simplified, the success rate and safety of operation are improved, operators can be easily trained, and wide promotion is easy.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to an endoscopic puncture biopsy device. Background technique [0002] Endoscopic puncture technology is a minimally invasive diagnosis and treatment technology completed through endoscopic working channels. Although it belongs to advanced endoscopic technology, it has been developed maturely all over the world in the past 30 years. The technology is to obtain diagnostic specimens of cells, tissues, and fluids through puncture, and can also perform puncture and aspiration therapy, and can also achieve the purpose of injection therapy. The endoscopes currently used for puncture generally include ultrasound endoscope and non-ultrasound endoscope (i.e. ordinary endoscope) puncture. Ultrasonic endoscopic puncture, transdigestive endoscopic puncture, transgastrointestinal ultrasonographic puncture, etc. [0003] Chinese published patent CN200580051293.5 relates to a "disposal t...

AI Technical Summary

Problems solved by technology

[0004] The common feature of the existing puncture needle products is that during the cutting operation, there is no limit to the retraction position, the needle tip is easy to pull out the mucous membrane, and the negative pressure suction fails, resulting in the failure of the operation and the lower the success rate of the operation, which greatly limits the application range of the puncture needle products

For puncture needle products with an inner core wire, it is first necessary to pull the inner core wire back into the needle tube before puncturing, and then reset the inner core wire. If there is a foreign object in the needle tube, it will be pushed into the human body by the inner core wire, which will give Serious safety hazard for patients

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