A full-thickness specimen sampler for gastric cancer

Abstract

The invention discloses a gastric cancer full-thickness specimen sampling apparatus, which comprises a needle tube and a core rod, wherein the core rod is arranged in the needle tube; a syringe needleis arranged on the needle tube; a cap is arranged at the end, back away from the syringe needle, of the needle tube; a rod hole, in which the core rod can slide, is formed in the cap; a rubber coveris arranged on the core rod; a fixing structure is arranged on the core rod; the fixing structure comprises a control rod, a spring and a Z-shaped locating piece; a sliding hole is formed in the corerod; a mounting hole is formed in the sidewall of the sliding hole; and a locating hole, in which the locating piece is embedded, is formed in the hole wall of the rod hole. The locating piece is justaligned with the locating hole when a suction amount nearly reaches a required value during sampling, and the control rod is pushed to slide under the power of the spring, so that the locating pieceis driven to get inserted into the locating hole and the core rod and the needle tube are locked; therefore precise control over the suction amount can be achieved, and pain in a patient due to excessive suction can be prevented; and in addition, less suction can be prevented, and the accuracy of test can be reduced.

Description

technical field [0001] The invention relates to a medical device, in particular to a gastric cancer full-thickness specimen sampler. Background technique [0002] Tumor is an abnormal lesion formed by a certain cell in the local tissue under the action of various carcinogenic factors, which picks up the normal regulation of its growth at the gene level, resulting in its clonal abnormal proliferation. However, tumors are also divided into benign and malignant. Sampling of the tumor is required for pathological analysis. Clinically, patients can be successfully sampled through surgical incisions when taking body surface tumor biopsy samples. However, due to the greater pain caused by surgical incisions, syringes are generally used for sampling at present, and the tumor tissue is absorbed by the negative pressure generated by the syringes. . The traditional sampler is relatively simple. The sampling needle is inserted into the tumor by pressure, and the tumor tissue is extrac...

AI Technical Summary

Problems solved by technology

When extracting, it is not easy for the operator to look directly at the scale on the syringe, and draw a rough amount by feeling. Sometimes too much extraction will increase the pain of the patient, and too little extraction will reduce the accuracy of the inspection.

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