Aspiration biopsy sheath

Abstract

The invention discloses an aspiration biopsy sheath which comprises an inner tube and an outer tube, wherein the inner tube is sheathed inside the outer tube; a clearance is arranged between the outer wall of the inner tube and the inner wall of the outer tube; the tail ends of the inner tube and the outer tube are mutually sealed, and the head ends are mutually opened; the circumferences of the head ends of the inner tube and the outer tube are respectively provided with a sealing element; and the outer wall of the tail end of the outer tube is provided with pores which are communicated withthe space between the inner tube and the outer tube. Since the puncture point is sealed in the inner tube in the aspiration biopsy process and the puncture point is sealed by biogel after finishing puncture, the user does not need to worry about the problem of leakage of tumor tissues during the aspiration biopsy, thereby avoiding risks caused by the traditional preoperative biopsy.

Description

technical field [0001] The application relates to the technical field of medical devices, in particular to a biopsy sheath. Background technique [0002] According to the ratio of benign to malignant tumors in the patient's kidney, radical resection is adopted in clinical work. However, in some patients, preoperative examinations, such as CT, color Doppler ultrasound, and MRI, all suggested malignant tumors, but after radical resection, postoperative pathological biopsy showed benign lesions. As a result, some patients often mistakenly remove the entire kidney when they could have retained some nephrons. [0003] Partial nephron-preserving surgery is currently not very difficult in terms of technology, but it is more difficult to obtain accurate pathological evidence of renal tumors before surgery. In recent years, the recommendation of needle biopsy of renal tumors has been added to the principles of renal cell surgery, through which a more accurate pathology of renal tum...

AI Technical Summary

Problems solved by technology

However, clinically, if the malignant proportion of the renal tumor is not known, if the needle biopsy is used directly, when the malignant proportion of the renal tumor is high, the probability of invasion of the tumor by the preoperative needle biopsy is high, and once the tumor is detected If ruptured, there is a risk of tumor spreading locally or even distant metastasis

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