Expandable ring percutaneous tissue removal device
AssigneeVivant Medical, Inc.
InventorsNatalie V. Fawzi, D. Laksen Sirimanne, George D. Hermann, Douglas S. Sutton, Thomas A. Howell
Life of this patent
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Abstract
This is a device for percutaneous tissue sampling or excision. In particular, it uses an expandable ring cutter which produces an accurately located, discrete tissue mass that is removable through a comparatively much smaller access member. The tissue mass is easily reconstructed to its original form and orientation once taken from the body for further study.
Claims57
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing to a position adjacent a selected internal tissue region, a trocar, a localization wire, an expandable tissue removal member having an enclosing sheath, and a cutting member, the cutting member movable between a collapsed first position and an expanded second position,
- b) inserting the localization wire through the selected internal tissue region,
- c) withdrawing the trocar from the position adjacent the selected internal tissue region,
- d) removing the enclosing sheath from the tissue removal member,
- e) moving the cutting member to cut a discrete tissue mass in the selected internal tissue region having a diameter generally greater than the expandable tissue removal member, and
- f) removing the discrete tissue mass through the tissue removal member.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a tissue removal assembly, said assembly comprising:
- a cutting member moveable between a collapsed first position and an expanded second position, the cutting member having a first end, a second end, and at least one cutting surface,
- a first access member having a longitudinal axis, a proximal end, and a distal end, the distal end of which is fixed to the first end of the cutting member, and a second access member having a longitudinal axis, a proximal end and a distal end, the distal end of which is fixed to the second end of the cutting member;
- the second access member axially rotatable about the longitudinal axis so that axial rotation of the second access member will move the cutting member between the collapsed first position and the expanded second position,
- b) moving the cutting member to cut a discrete tissue mass in the selected internal tissue regional, and
- c) removing the discrete tissue mass.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member attached to two shafts and movable between a collapsed first position and an expanded second position,
- b) moving the cutting member longitudinally with respect to the shafts to cut a tissue mass in the selected internal tissue region, and
- c) removing the tissue mass.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position,
- b) moving the cutting member to cut a single discrete integral tissue specimen in the selected internal tissue region.
- c) removing the tissue specimen, and
- d) packing a tissue cavity with biologically inert packing material, said cavity remaining after the removing the tissue specimen.
The procedure of 42 wherein said packing material is inserted to prevent unnecessary bleeding.
The procedure of 42 wherein said packing material is inserted to minimize the possibility of hematoma formation.
The procedure of 42 wherein said packing material is inserted to help prevent dimpling or deformation.
A procedure for removing tissue from a selected internal tissue region in a patient's breast, comprising the steps of:
- a) introducing an expandable percutaneous tissue removal device into the patient's breast,
- b) using the device to cut tissue in the selected internal tissue region,
- c) removing the cut tissue, thereby creating a tissue cavity, and
- d) preventing dimpling or deformation of the breast by packing the tissue cavity with inert packing material, wherein the inert packing material comprises a fibrin-collagen matrix.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and expanded second position, wherein the cutting member is a radio frequency cutter further comprising a mechanical blade, and tissue removal member,
- b) moving the cutting member to cut a discrete tissue mass in the selected internal tissue region, wherein the tissue mass has a diameter generally greater than the diameter of the tissue removal member, and
- c) removing the tissue mass through the tissue removal member.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position, and a tissue removal member, wherein the tissue removal member is a braided, expandable tubular member,
- b) moving the cutting member to cut a discrete tissue mass in the selected internal tissue region, wherein the tissue mass has a diameter generally greater than the diameter of the tissue removal member, and
- c) removing the tissue mass through the tissue removal member.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position, and a tissue removal member,
- b) moving the cutting member to cut a discrete tissue mass in the selected internal tissue region, wherein the tissue mass has a diameter generally greater than the diameter of the tissue removal member,
- c) removing the tissue mass through the tissue removal member, and
- d) packing a tissue cavity with biologically inert packing material, said cavity remaining after removing the tissue mass.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) making an incision in a skin region in proximity to the selected internal tissue region;
- b) introducing, through the incision, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position, wherein the cutting member is a radio frequency cutter further comprising a mechanical blade;
- c) moving the cutting member to cut a discrete tissue mass in the selected internal tissue region, wherein the diameter of the discrete tissue mass is larger than the size of the incision;
- and
- d) removing the tissue mass through the incision.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) making an incision in a skin region in proximity to the selected internal tissue region;
- b) introducing, through the incision, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position,
- c) introducing a tissue removal member to a position adjacent the selected internal tissue region tissue region.
- d) moving the cutting member to cut a discrete tissue mass in the selected internal tissue region, wherein the diameter of the discrete tissue mass is larger than the size of the incision and wherein the discrete tissue mass has a diameter generally greater than the diameter of the tissue removal member;
- and
- e) removing the tissue mass through the incision.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) making an incision in a skin region in proximity to the selected internal tissue region;
- b) introducing, through the incision, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position,
- c) moving the cutting member to cut a discrete tissue mass in the selected internal tissue region, wherein the diameter of the discrete tissue mass is larger than the size of the incision,
- d) removing the tissue mass through the incision;
- and
- e) packing a tissue cavity with biologically inert packing material, said cavity remaining after removing the tissue mass.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position, wherein said cutting member is oriented about an axis,
- b) axially moving the cutting member along the axis to cut a single discrete integral tissue specimen in the selected internal tissue region, and
- c) removing the tissue specimen.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position, wherein the cutting member is a radio frequency cutter further comprising a mechanical blade,
- b) moving the cutter member to cut a single discrete integral tissue specimen in the selected internal tissue region, and
- c) removing the tissue specimen.
A procedure for removing tissue from a selected internal tissue region, comprising the steps of:
- a) introducing, to a position adjacent the selected internal tissue region, a cutting member movable between a collapsed first position and an expanded second position,
- b) introducing a tissue removal member to a position adjacent the selected internal tissue region wherein the tissue removal member is a braided, expandable tubular member,
- c) moving the cutting member to cut a single discrete integral tissue specimen in the selected internal tissue region, and
- d) removing the tissue specimen.
Dependencies are inferred from the claim text.