Biopsy needle
AssigneeLeica Mikrosysteme GmbH
InventorHeinz Hohenberg
Life of this patent
Estimating the term…
Abstract
A precision biopsy needle for removing liquid-containing tissue samples. The needle includes a needle body that receives a tissue sample and an internal plunger that is movable inside the needle body. A removable sample receiving element is introduced between the inner wall of the needle body and the movable inner plunger. The tissue sample may be transferred without the risk of damage to the tissue structure, and prevents the sample material from drying out during manipulation.
Claims19
A biopsy needle for removing liquid-containing tissue samples comprising:
- a needle body having a first hollow bore section defined by an inner wall, for receiving the tissue sample;
- an internal plunger axially movable inside the bore section of the needle body;
- and
- a hollow, generally cylindrical removable sample receiving element positioned between the inner wall of the needle body bore section and the movable internal plunger.
A biopsy apparatus kit comprising:
- a hollow needle body for piercing a tissue to be biopsied;
- wherein the needle body includes an internal cavity for receiving a removable sample receiving element;
- and
- a plurality of hollow, generally cylindrical removable sample receiving elements for insertion into the internal cavity of the needle body.
A biopsy apparatus kit comprising:
- a hollow needle body for piercing a tissue to be biopsied;
- wherein the needle body includes an internal cavity for receiving a removable sample receiving element;
- and
- wherein the internal cavity of needle comprises a first hollow bore section, for receiving the tissue sample, and the needle body includes a needle head having a second hollow bore section, and wherein the first bore section has a diameter larger than said second bore section.
A method for taking a liquid-containing biopsy tissue sample, comprising:
- positioning a hollow, generally cylindrical removable sample receiving element into a needle body having a first hollow bore section defined by an inner wall, along the inner wall of the needle body bore section;
- inserting the needle body into the tissue region from which the sample is desired;
- relatively moving the needle body and an internal plunger axially movable inside the bore section of the needle body to draw into the sample receiving element a sample of tissue;
- withdrawing the needle from the tissue;
- and
- removing the sample receiving element and sample contained therein from the needle body.
Dependencies are inferred from the claim text.