Automatic percussion type living tissue sampling needle

Abstract

The invention provides an automatic percussion type living tissue sampling needle, comprising a sampling needle head and a sampling needle handle, wherein the sampling needle head comprises an outer needle and an inner needle, a sampling opening is formed in the front end of the inner needle, and enough living tissue samples can be taken by cooperation between the inner needle and the outer needle; a safety baffle is arranged, so a button of the percussion handle can be blocked, percussion by mistake is prevented; meanwhile, the safety baffle can be shifted to different gears, so two-stage percussion of the inner needle and the outer needle is achieved; a lever handle and a trigger buckle plate are arranged and used in cooperation, an outer needle fixing base and an inner needle fixing base can be pulled backwards till the outer needle fixing base and the inner needle fixing base are clamped by a first lock catch and a second lock catch, so springs arranged on the outer sides of an outer needle and an inner needle in a sleeving mode are in a pressed state, and the outer needle and the inner needle are in a to-be-fired state; the button of the percussion handle can be linked with the first lock catch and the second lock catch, and percussion of the outer needle and the inner needle can be achieved only by pressing the button of the percussion handle; and a toggle switch is arranged, and when the trigger is not used, the trigger can be locked in order to prevent mistaken touch and facilitate storage.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an automatic firing biopsy needle. Background technique [0002] When some diseases are diagnosed, it is often necessary to sample biopsies at the lesion for laboratory examination. Sampling needles are usually used clinically for biopsy sampling of unknown substances in the upper and lower digestive tracts, respiratory tracts and other systems for pathological analysis. [0003] Normally, during the operation of the sampling needle, the operator needs to operate the device with both hands, hold the device with one hand, and complete the sampling operation with the other hand. The operation is relatively cumbersome. With aspiration, there is a risk of negative pressure injury to the patient; or with a barb for sampling, the biopsy sample may not be sufficient to perform a biopsy. [0004] The biopsy needle in the prior art mainly has the following technical problems...

AI Technical Summary

Problems solved by technology

[0005]1. The existing sampling needle is inconvenient to operate or the number of biopsy samples obtained is insufficient;

[0006]2. The auto-trigger biopsy needle is easy to accidentally touch, thus causing unnecessary damage to the patient;

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