Biopsy sampling device

Abstract

The invention belongs to the technical field of medical equipment, and discloses a biopsy sampling device. The biopsy sampling device comprises a tube body, a negative pressure suction tube and a cutting unit; the negative pressure suction tube is movably installed in the tube body; the end part, extending out of the tube body, of the negative pressure suction tube is provided with a negative pressure suction nozzle; the cutting unit includes two cutting boards oppositely arranged; the cutting boards are rotationally connected with the tube body through connecting rods; each cutting board is provided with a blade; middle parts of the cutting boards are connected with a connecting seat through pull rods; and the connecting seat glidingly sleeves the negative pressure suction tube. Accordingto the biopsy sampling device provided by the invention, the negative pressure suction nozzle is close to tissue, and the negative pressure suction tube is pulled; after the negative pressure suctionnozzle touches the connecting seat, the connecting seat is pushed to move to make the two cutting boards move oppositely until the blades close to cut off the tissue, thereby completing sampling; andsince the negative pressure suction nozzle cuts the tissue after the tissue is pulled up, the sampling depth of the biopsy sampling device is greater than that of traditional biopsy forceps, and sampling of a muscular layer can be realized.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a biopsy sampling device. Background technique [0002] Endoscopy has become an effective diagnostic method for various human body cavity diseases. Clinical endoscopy includes gastroscopy, colonoscopy, bronchoscopy, cystoscopy, hysteroscopy, thoracoscopic and laparoscopy, etc. It is widely used In the diagnosis of body cavity mucosal diseases, including various acute and chronic inflammations, precancerous lesions, benign and malignant tumors, polyps, congenital malformations and other diseases. Endoscopy is an important tool in modern medical diagnosis. However, endoscopic examination is inseparable from pathological diagnosis to clarify the nature of the lesion. [0003] At present, biopsy forceps are often used clinically to sample and biopsy suspicious lesions of the body cavity mucosa. In the process of realizing the present invention, the inventors hav...

AI Technical Summary

Problems solved by technology

However, endoscopic examination is inseparable from pathological diagnosis to clarify the nature of the lesion

[0003] At present, biopsy forceps are often used clinically to sample and biopsy suspicious lesions of the body cavity mucosa. In the process of realizing the present invention, the inventors have found that there are at least the following problems in the prior art: first, the sampling depth of the biopsy forceps is not enough to infiltrate the lesion. In-depth histopathological judgment

However, the premise of endoscopic treatment is that the depth of lesion infiltration should not be too deep, but the current preoperative non-invasive examination to judge the depth of lesion infiltration is often not very accurate, and through routine biopsy, it is impossible to obtain deep enough tissue. to make in-depth judgments

Second, the sampling depth is not enough to obtain the real diseased tissue

However, conventional biopsy can only get the superficial layer of the mucosa, so the pathological diagnosis often shows false negative results, which requires patients to undergo repeated gastroscopy and biopsy, or may cause misdiagnosis and delay the diagnosis and treatment of the disease; third, biopsy forceps for sampling Finally, if there is severe bleeding or suspected perforation, a separate device is required to clamp the sampling wound, which is inconvenient to operate

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