Tissue removal device and method of use

Patent metadata

Field	Value
Publication number	US-2018092633-A1
Application number	US-201715816856-A
Country	US
Kind code	A1
Filing date	Nov 17, 2017
Priority date	Jun 2, 2015
Publication date	Apr 5, 2018
Grant date	—

Abstract

A biopsy device for acquiring a tissue sample is disclosed. The biopsy device comprises a tissue-engaging outer element, a handle and a trocar. Multiple tissue samples may be collected.

First claim

I claim:

1 . A tool for acquiring a tissue comprising:
a cutter tube for receiving the tissue; a partoff mechanism at least partially inside of the cutter tube; a trocar slidably positioned inside of the cutter tube; a handle having a tubular longitudinal axis, wherein the handle is longitudinally fixed to the cutter tube; wherein the trocar has a first trocar position and a second trocar position, wherein in the first trocar position the trocar is in a distal-most position in the cutter tube, and wherein in the second trocar position, the trocar is proximal to the first trocar position, and the tissue is in the cutter tube, and the tissue is in contact with a distal terminal end of the trocar, and wherein the proximal end of the trocar extends into the handle, and wherein the proximal end of the trocar is distal to the proximal terminal end of the handle.

2 . The tool of claim 1 , wherein the cutter tube is configured to rotate about the tubular longitudinal axis with respect to the handle.

3 . A method for acquiring tissue comprising:
receiving the tissue in the distal end of a cutter tube, wherein a trocar is slidably positioned in the cutter tube, and wherein receiving the tissue comprises pressing the tissue against the distal end of the trocar, and wherein the pressing comprises sliding the trocar proximally.

4 . The method of claim 3 , further comprising inserting the cutter tube into a tissue site.

5 . The method of claim 3 , further comprising ejecting the tissue from the distal end of the cutter tube.

6 . The method of claim 5 , wherein ejecting comprises sliding the trocar distally in the cutter tube.

7 . A tool for acquiring a tissue comprising:
a cutter tube for receiving the tissue; and; an indicator configured to indicate the amount of tissue in the cutter tube.

8 . The tool of claim 7 , wherein the indicator comprises a first indicator length extending out of the cutter tube, and wherein the first indicator length corresponds to the length of the tissue in the cutter tube.

9 . The tool of claim 7 , wherein the indicator comprises a trocar.

10 . The tool of claim 7 , wherein a partoff mechanism is located adjacent to the cutter tube.

11 . The tool of claim 10 , wherein the partoff mechanism is configured to sever the tissue.

12 . The tool of claim 7 , further comprising a handle having a tubular longitudinal axis, wherein the cutter tube is configured to rotate about the tubular longitudinal axis with respect to the handle.

13 . The tool of claim 12 , wherein the indicator is configured to rotate with respect to the handle.

14 . The tool of claim 12 , wherein the indicator is configured to be rotationally fixed with respect to the handle.

15 . The tool of claim 7 , wherein the cutter tube is longitudinally fixed with respect to the handle.

16 . The tool of claim 7 , wherein the indicator is configured to eject the tissue from the cutter tube.

Assignees

• Becton Dickinson Co

Inventors

• Peliks Robert Bilgor

Classifications

• A61B10/0266 Primary

  means for severing sample · CPC title

• A61B2010/0208

  Biopsy devices with actuators, e.g. with triggered spring mechanisms · CPC title

• A61B10/0283

  with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe (A61B10/025, A61B10/0266 take precedence) · CPC title

• A61B2010/0225

  for taking multiple samples · CPC title