Intrauterine intact lymph node biopsy device, biopsy system and use method thereof

Abstract

The invention discloses an intrauterine intact lymph node biopsy device, including an inner sheath, an outer sheath tube movably sleeved outside the inner sheath tube and formed with a cavity betweenthe inner sheath tube and the outer sheath tube, and a cutting hook movably sleeved inside the inner sheath tube, wherein an elastic distraction bracket is accommodated in the cavity, the distractionbracket has the tendency of being expanded outward along the inner sheath tube radially, the proximal end of the distraction bracket is fixedly connected with the tube wall of the inner sheath tube, and the distal end of the inner sheath tube is located inside the distraction bracket. In the invention, the use method of the biopsy device based on the guidance of the ultrasound endoscope is also provided, which can complete the complete removal of the lymph nodes outside the digestive tract under the guidance of the ultrasound endoscope, can meet the adequacy of pathological sampling, reduce the trauma to the patient, recover quickly after the operation, and truly achieve the minimally invasive biopsy. In this lymph node dissection method, endoscopic ultrasound was used to evaluate the sensitivity, specificity and accuracy of malignant lymph nodes to improve the sensitivity, specificity and accuracy of diagnosis of metastatic lymph nodes and lymphoma.

Description

technical field [0001] The invention relates to a biopsy device, in particular to a biopsy device, a biopsy system and a use method for a complete lymph node outside the cavity of the digestive tract. Background technique [0002] Tumor staging is an important part of the diagnosis and treatment of digestive system malignancies. Insufficient cancer staging may cause patients to receive surgery without neoadjuvant therapy, thereby reducing the overall curative effect and affecting prognosis, while excessive cancer staging may cause patients to receive unnecessary preoperative radiotherapy and chemotherapy and increase the medical burden on individuals and society . Therefore, accurate cancer staging is crucial. One of the important elements is the evaluation of metastatic lymph nodes. [0003] Existing assessment techniques include the following: [0004] (1) Imaging examinations (such as CT, PET, EUS), but due to the limitations of affecting features, histopathology cann...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a complete lymph node biopsy device, biopsy system and usage method outside the digestive tract cavity, which can completely remove the metastatic lymph nodes of gastric cancer through a minimally invasive method guided by endoscopic ultrasound, and solve the problem of gastric cancer staging caused by insufficient material for lymph node biopsy. Improving the safety, sensitivity, specificity and accuracy of diagnosing gastric cancer lymph node metastasis

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