TISSUE REMOVAL DEVICES AND METHODS

• US 20080147084A1
• Filed: 12/07/2007
• Published: 06/19/2008
• Est. Priority Date: 12/07/2006
• Status: Abandoned Application

• Current Assignee: Baxano, Inc. (Baxano Surgical, Inc.)
• Original Assignee: Baxano, Inc. (Baxano Surgical, Inc.)
• Inventors: Leguidleguid, Roy, Bleich, Jeffrey L., Wallace, Michael P., Schmitz, Gregory, Leguidleguid, Ronald, Cantorna, Nestor C.
• Application Number:
  US11/952,934
• Publication Number:
  US 20080147084A1
• Time in Patent Office: Days
• US Class Current: 606/114
• CPC Class Codes: A61B 17/149 Chain, wire or band saws
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 2017/00261 Discectomy
• CPC Class Codes: A61B 2017/320004 abrasive
• CPC Class Codes: A61B 2017/320008 Scrapers
• CPC Class Codes: A61B 2017/32006 with a cutting strip, band or chain, e.g. like a chainsaw

Abstract

A device for modifying tissue in a patient may include: an elongate body having a rigid proximal portion and a flexible distal portion having first and second major surfaces; a proximal handle coupled with the proximal portion of the body; one or more tissue modifying members disposed along the first major surface of the distal portion of the body; a guidewire coupled with and extending from the distal portion of the body; and a distal handle removably coupleable with the guidewire outside the patient.

Claims

1. A device for modifying tissue in a patient, the device comprising:

an elongate body having a proximal end and a distal end, wherein the elongate body comprises flexible and opposing first and second major surfaces laterally extending between the proximal and distal ends;

a tissue collection region between the first and second surfaces; and

one or more tissue modifying members disposed along the first major surface and configured to cut the tissue when the tissue modifying members are urged against the tissue.

2. The device of claim 1, further wherein the proximal end comprises a rigid portion and the distal region comprises a flexible distal portion that includes the first and second major surfaces, and further comprising a proximal handle coupled with the proximal region of the elongate body.

3. The device of claim 1, wherein the first major surface has a smaller radius of curvature than the second major surface.

4. The device of claim 1, further comprising one or more valves within the tissue collection region configured to direct the cut tissue away from the tissue modifying members.

5. The device of claim 1, further comprising a floating substrate configured to limit the tissue modifying member based on the amount of material in the tissue collection region.

6. The device of claim 1, further comprising a tissue transporter operably connected with the tissue collection region and configured to remove tissue from the tissue collection region adjacent the tissue modification member.

7. The device of claim 6, wherein the tissue transporter comprises at least one of:

an irrigation channel and an aspiration channel.

8. The device of claim 6, wherein the tissue transporter comprises a pull wire.

9. The device of claim 6, wherein the tissue transporter comprises a belt.

10. The device of claim 6, wherein the tissue transporter comprises a retractable member.

11. The device of claim 1, further comprising a channel in communication with the tissue modifying member, wherein the channel is configured to direct tissue into the tissue collection region.

12. The device of claim 1, wherein the tissue modifying member forms a channel configured to direct tissue into the tissue collection region.

13. The device of claim 1, wherein the tissue collection region is expandable.

14. The device of claim 1, wherein the tissue collection region is removable.

15. A device for modifying tissue in a patient, the device comprising:

an elongate body having a proximal end and a distal end, wherein the elongate body comprises opposing first and second major surfaces laterally extending between the proximal and distal ends;

one or more tissue modifying members disposed along the first major surface and configured to cut the tissue when the tissue modifying members are urged against the tissue; and

a tissue collection region between the first and second surfaces;

wherein the tissue collection region is configured for static tissue storage.

16. The device of claim 15, further comprising a proximal handle coupled to the proximal region of the elongate body.

17. The device of claim 15, wherein the tissue collection region is removable.

18. The device of claim 15, wherein the tissue collection region is expandable.

19. A method of removing tissue from a patient, the method comprising:

advancing an elongate tissue modification device adjacent to a target tissue, wherein the elongate tissue modification device comprises;

an elongate body having a proximal end and a distal end, wherein the elongate body includes opposing first and second major surfaces that laterally extend between the proximal and distal ends;

one or more tissue modifying members disposed along the first major surface and configured to cut the tissue when the tissue modifying members are urged against the tissue; and

a tissue collection region configured to collect tissue, wherein the tissue collection region is configured for static tissue storage;

contacting the target tissue with the tissue modifying members;

cutting the target tissue with the tissue modifying member; and

collecting at least some of the cut tissue within the tissue collection region.

21. The method of claim 21, further comprising driving the tissue modification member against the target tissue by applying tension to the distal and proximal ends of the elongate body.

20. The method of claim 21, further comprising moving the cut tissue away from the tissue modifying members.

22. The method of claim 21, further comprising replacing the tissue collection region.