Biopsy probe mechanism having multiple echogenic features

Patent metadata

Field	Value
Publication number	US-9456806-B2
Application number	US-201313929314-A
Country	US
Kind code	B2
Filing date	Jun 27, 2013
Priority date	Dec 23, 2009
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

A biopsy probe mechanism includes an elongate sample receiving member having a longitudinal axis and having a sample receiving notch. The elongate sample receiving member and a cutting cannula are movable relative to one another along a longitudinal axis. A first echogenic feature is established on the elongate sample receiving member and a second echogenic feature is established on the cutting cannula. The elongate sample receiving member and the cutting cannula are configured to have a first position in which the first echogenic feature is in longitudinal alignment with the second echogenic feature, and configured such that when the elongate sample receiving member and the cutting cannula are moved relative to one another from the first position, the first echogenic feature and the second echogenic feature are out of longitudinal alignment.

First claim

What is claimed is:

1. A biopsy probe mechanism, comprising:
an elongate sample receiving member having a longitudinal axis and having a sample receiving notch;
a cutting cannula arranged coaxially with the elongate sample receiving member, the elongate sample receiving member and the cutting cannula being movable relative to one another along the longitudinal axis; and
a plurality of echogenic features including a first echogenic feature established on the elongate sample receiving member and a second echogenic feature established on the cutting cannula, and the elongate sample receiving member and the cutting cannula configured to have a first position in which the first echogenic feature is in longitudinal alignment with the second echogenic feature, and configured such that when the elongate sample receiving member and the cutting cannula are moved relative to one another from the first position, the first echogenic feature and the second echogenic feature are out of longitudinal alignment,
wherein the elongate sample receiving member has a proximal end and a distal end, the sample receiving notch being located proximal to the distal end, the plurality of echogenic features including a third echogenic feature established on the elongate sample receiving member, with one of the first echogenic feature and the third echogenic feature being located distal to the sample receiving notch and the other of the first echogenic feature and the third echogenic feature being located proximal to the sample receiving notch,
and
wherein the plurality of echogenic features includes a fourth echogenic feature established on the cutting cannula at a location spaced apart from the second echogenic feature,
the third echogenic feature being in longitudinal alignment with the fourth echogenic feature when the elongate sample receiving member and the cutting cannula are in the first position, and
the third echogenic feature being out of longitudinal alignment with the fourth echogenic feature when the elongate sample receiving member and the cutting cannula are not in the first position.

2. The biopsy probe mechanism of claim 1 , wherein the sample receiving notch in the elongate sample receiving member is closed by the cutting cannula when the first echogenic feature and the second echogenic feature are in longitudinal alignment, and configured such that when the sample receiving notch is opened the first echogenic feature and the second echogenic feature are out of longitudinal alignment.

3. The biopsy probe mechanism of claim 1 , wherein each echogenic feature of the plurality of echogenic features includes at least one circumferential echogenic band.

4. The biopsy probe mechanism of claim 1 , wherein each echogenic feature of the plurality of echogenic features is formed as at least one of a roughened surface, an embedded material, a machined pattern and a particulate coating for providing a distinct echogenic reflection from surrounding areas during ultrasound imaging.

5. The biopsy probe mechanism of claim 1 , wherein the biopsy probe mechanism is configured as a disposable unit.

6. The biopsy probe mechanism of claim 1 , wherein the biopsy probe mechanism is integrated into a biopsy apparatus having a driver for driving the biopsy probe mechanism.

7. A biopsy apparatus for use in conjunction with an ultrasound device, comprising:
a driver assembly; and
a biopsy probe mechanism coupled to the driver assembly, the driver assembly being configured to provide operative control over the biopsy probe mechanism, the biopsy probe mechanism including an elongate sample receiving member having a longitudinal axis and a cutting cannula arranged coaxially with the elongate sample receiving member, and including a first echogenic feature established on the elongate sample receiving member and a second echogenic feature established on the cutting cannula, and
the elongate sample receiving member and the cutting cannula configured to have a first position in which the first echogenic feature is in longitudinal alignment with the second echogenic feature to facilitate creation of a single echogenic reflection, and configured such that when the elongate sample receiving member and the cutting cannula are moved relative to one another from the first position, the first echogenic feature and the second echogenic feature are out of longitudinal alignment to facilitate creation of separate individual echogenic reflections with respect to the first echogenic feature and the second echogenic feature,
wherein the elongate sample receiving member has a proximal end and a distal end, and the elongate sample receiving member having a sample receiving notch being located proximal to the distal end, the elongate sample receiving member having a third echogenic feature, with one of the first echogenic feature and the third echogenic feature being located distal to the sample receiving notch and the other of the first echogenic feature and the third echogenic feature being located proximal to the sample receiving notch, and
wherein the cutting cannula has a fourth echogenic feature spaced apart from the second echogenic feature, and wherein the elongate sample receiving member and the cutting cannula are configured such that:
when the elongate sample receiving member and the cutting cannula are in the first position the third echogenic feature is in longitudinal alignment with the fourth echogenic feature to facilitate creation of a single echogenic reflection, and
when the elongate sample receiving member and the cutting cannula are not in the first position the third echogenic feature is out of longitudinal alignment with the fourth echogenic feature to facilitate creation of separate individual echogenic reflections with respect to the third echogenic feature and the fourth echogenic feature.

8. The biopsy apparatus of claim 7 , wherein each echogenic feature includes at least one circumferential echogenic band.

9. The biopsy apparatus of claim 8 , wherein each circumferential echogenic band is formed as at least one of a roughened surface, an embedded material, a machined pattern and a particulate coating for providing a distinct echogenic reflection from surrounding areas during ultrasound imaging.

10. The biopsy apparatus of claim 7 , wherein the elongate sample receiving member has a sample receiving notch that is closed by the cutting cannula when in the first position.

Assignees

• Bard Inc C R
• Bard Inc C R

Inventors

• Chudzik Rafal
• Seiger Jason G
• Smith Jennifer
• Simpson Charles

Classifications

• A61B10/0233 Primary

  Pointed or sharp biopsy instruments · CPC title

• A61M25/0108

  using radio-opaque or ultrasound markers · CPC title

• A61B2090/0811

  for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument · CPC title

• A61B2090/062

  penetration depth · CPC title

• A61B90/39

  Markers, e.g. radio-opaque or breast lesions markers · CPC title