Stereotactic soft tissue coring biopsy devices and methods

Patent metadata

Field	Value
Publication number	US-9592035-B2
Application number	US-201314052724-A
Country	US
Kind code	B2
Filing date	Oct 12, 2013
Priority date	Aug 22, 2013
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

An excisional device for either handheld car stereotactic table use may comprise an outer sheath that may comprise a distal scoopula shape configured to penetrate and/or cut tissue independently or in concert with work element(s). The articulable work element(s) may comprise articulable beak(s) and may be configured to translate and/or rotate at a first rate and to cut tissue in a direction implied by placement of the scoopula shaped outer sheath. A first helical element or equivalent assembly may be configured to transport tissue cut by the work element(s) and/or scoopula, may be co-axially disposed relative to the work element(s) and may be operative to rotate at a second rotation rate that is different than the first rate. A proximal sheath may be co-axially disposed relative to the work element(s) and the first helical element, and may be configured to rotate and actuate the work element(s).

First claim

What is claimed is:

1. A stereotactic biopsy device assembly, comprising:
a platform configured to couple to a stage of a stereotactic table, the platform comprising a first portion configured to fixedly couple to the stage and a second portion movably coupled to the first portion;
a first capstan assembly, the first capstan assembly being configured to couple to the first and second portions of the platform and to a biopsy device configured to enter tissue along a z-axis, the first capstan assembly comprising:
an actuator configured to be rotated about a central axis, the actuator comprising an extension;
a spiral path element defining a spiral pathway that is configured to engage and constrain the extension as the actuator is rotated, the spiral path element being configured to shift, as the engaged extension follows the spiral pathway, from a first configuration that is substantially centered on the central axis to a second configuration that is eccentrically-disposed relative to the central axis, the shifting spiral path element causing the biopsy device to gradually move away from the central axis from an initial position in an x-y plane to a final position in the x-y plane away from the initial position in the x-y plane.

2. The stereotactic biopsy device assembly of claim 1 , wherein the first capstan assembly is configured to be coupled to a proximal end of the biopsy device.

3. The stereotactic biopsy device assembly of claim 2 , further comprising a second capstan assembly coupled to a distal end of the biopsy device.

4. The stereotactic biopsy device assembly of claim 3 , wherein the first capstan assembly is independent of the second capstan assembly.

5. The stereotactic biopsy device assembly of claim 3 , wherein differential operation of the first and second capstan assemblies changes an angle of attack of the biopsy device.

Assignees

• Transmed7 Llc

Inventors

• Vetter James W
• Vetter Eugene H
• Clark Daniel E
• Vetter Alisen E
• Vetter Paul A

Classifications

• A61B2010/0225

  for taking multiple samples · CPC title

• A61B10/0266 Primary

  means for severing sample · CPC title

• A61B2017/320064

  with tissue or sample retaining means · CPC title

• A61B2010/0208

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

• A61B10/06

  Biopsy forceps {, e.g. with cup-shaped jaws} · CPC title