Sample management for core needle biopsy device
AssigneeDevicor Medical Products, Inc.
InventorsJustin Rebellino, David C. McBreen, Andrew P. Nock, Jessica P. Leimbach
Life of this patent
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Abstract
A core needle biopsy device includes a needle assembly, a drive assembly, and a tissue sample holder. The needle assembly includes a piercer and a hollow cutter. The piercer includes a sharp distal tip and a notch proximal to the distal tip. The piercer is slidably disposed within the cutter to sever a tissue sample into the notch of the piercer. The drive assembly is configured to selectively move the piercer and the cutter. The tissue sample holder has a sample chamber and a wiper. The wiper is movable relative to the piercer and cutter to manipulate a severed tissue sample into the sample chamber.
Claims20
A core needle biopsy device, comprising:
- (a) a needle assembly including a piercer and a hollow cutter, the piercer being solid and defining a longitudinal piercer axis, the piercer including a sharp distal tip and defining a notch proximal to the distal tip, the notch being a cutout laterally disposed along a solid portion of the needle such that the solid portion extends an entire length of the notch, the piercer being slidably disposed within the cutter to sever a tissue sample into the notch of the piercer;
- (b) a drive assembly configured to selectively move the piercer and the cutter;
- and
- (c) a tissue sample holder having a sample chamber and a wiper, the wiper defining a tissue manipulation portion, the wiper being flexible, the wiper being movable about a wiper axis and relative to the piercer and cutter to manipulate a severed tissue sample into the sample chamber, the wiper being configured to sweep the tissue manipulation portion across the entire length of the notch and to move within the sample chamber to push the severed tissue sample out of the notch and into the sample chamber, the longitudinal piercer axis and the wiper axis being parallel.
A tissue sample holder for use with a core needle biopsy device, the core needle biopsy device including a piercer having a sample notch and a cutter movable relative to the sample notch to sever a tissue sample, the tissue sample holder comprising:
- (a) a body defining a sample chamber;
- and
- (b) at least one wiper movable through the sample chamber of the tissue sample holder to manipulate a severed tissue sample from the sample notch of the piercer and into the sample chamber of the body.
A method for using a biopsy device, the method comprising:
- (a) retracting a sample notch defined by a piercer proximally into a tissue sample holder;
- (b) rotating a wiper relative to the sample notch and within the tissue sample holder to thereby sweep the wiper across the sample notch;
- and
- (c) after rotating the wiper to thereby sweep the wiper across the sample notch, moving the wiper away from the sample notch and towards a sample chamber.
Dependencies are inferred from the claim text.