Replaceable core biopsy needle

Abstract

The present disclosure generally relates to a biopsy needle configured to maximize tissue sampling yield and collect a cohesive unit of sampled tissue. The biopsy needle includes an elongate tubular body comprising a lumen extending therethrough from a proximal open end to a distal open end of the body. The distal end includes first and second tip portions extending therefrom and radially opposing one another. The first tip portion has a length greater than the second tip portion, thereby resulting in an increased surface area of a curvilinear cutting edge extending from the first tip portion to the second tip portion. Additionally, each of the first and second tip portions defines a point configured to pierce the tissue to be sampled and further direct tissue towards the lumen of the body to be excised by the cutting edge upon contact therewith.

Description

technical field [0001] The present disclosure relates generally to a biopsy device, and more particularly to a biopsy needle configured for use in collecting tissue, fluid, and / or cell samples in conjunction with minimally invasive procedures, such as endoscopic biopsy. Background technique [0002] In medical diagnostic practice, it is often necessary to perform a biopsy (biopsy) to remove a patient's tissue or fluid sample for pathological studies. For example, biopsies can be useful in diagnosing various forms of cancer and other diseases affecting localized areas of tissue. Biopsies can be used to obtain tissue and / or fluid samples from muscles, bones, and organs such as the liver or lungs. In some cases, a biopsy sample can be obtained through an invasive surgical procedure. However, minimally invasive biopsy procedures such as fine needle aspiration and fine needle biopsy are generally preferred because such procedures are less invasive to the patient. [0003] The ...

AI Technical Summary

Problems solved by technology

Certain beveled designs, such as the standard beveled cutting end of needle 100, may first penetrate a portion of the target lesion, but may then deviate or deviate from the target lesion and / or fail to fully penetrate the lesion due to improper tip design, This results in suboptimal tissue samples and may even cause damage to surrounding tissues or vital organs

In addition, the existing oblique cutting design may only cut off a part of the target tissue due to improper tip design and cannot collect part or even all of the sample tissue into the lumen of the needle

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