Surgical disc removal tool

Patent metadata

Field	Value
Publication number	US-9827004-B2
Application number	US-201514744090-A
Country	US
Kind code	B2
Filing date	Jun 19, 2015
Priority date	Jan 31, 2012
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A tissue removal device including customizable tips and method of use thereof. The tissue removal device may include an outer shaft having a removable tip attached to the outer shaft and a rotatable inner shaft extending through the outer shaft and having a rotatable cutting portion extending from the inner shaft. Disc material may be cut and removed from a surgical area using an auger-like and/or suction mechanism to facilitate the transfer of removed tissue away from the surgical area.

First claim

What is claimed is:

1. A method for removing tissue using a tissue removal device comprising an outer shaft having a removable tip attached thereto and a rotatable inner shaft extending through the outer shaft and having a cutting portion extending from the inner shaft, the method comprising:
accessing an area for tissue removal;
cutting a portion of tissue at a surgical site by rotating the cutting portion of the inner shaft; and
conveying the cut portion of tissue away from the surgical site through a space between the outer shaft and the inner shaft
wherein the tip includes a curette in the form of a lip radially extending outward around an entire circumference of the tip,
wherein the lip has a diameter greater than a diameter of a distal end of the tip.

2. The method of claim 1 , wherein a portion of the inner shaft is angled.

3. The method of claim 2 , wherein the inner shaft includes a spring region in the form or a relief or spiral cut to angle the inner shaft.

4. The method of claim 1 , wherein the inner shaft is substantially straight.

5. The method of claim 1 , wherein a base of the cutting portion is offset relative to an outer diameter of the outer shaft to allow an enlarged gap between the cutting portion and the outer shaft.

6. The method of claim 5 , wherein the enlarged gap creates a non-coaxial exit path for the cut portion of the tissue in the tip.

7. The method of claim 1 , wherein the tip includes a blunt distal end, and an open window in the distal end.

8. The method of claim 1 , wherein the tip includes a plurality of teeth configured to provide a scissor-like effect when the cutting portion rotates against the plurality of teeth.

9. The method of claim 1 , wherein the cut portion of tissue is conveyed via suction.

10. The method of claim 1 , wherein at least a portion of the inner shaft is threaded to enhance transportation of the cut portion of tissue in an auger-like manner through the tissue removal device.

11. A method for removing tissue, the method comprising:
accessing a surgical site for tissue removal;
providing a tissue removal device for removing tissue, the tissue removal device comprising: an elongate outer shaft having an opening extending therethrough, an inner shaft extending through the outer shaft and creating an opening between the inner shaft and the outer shaft, and a cutting portion extending from the inner shaft that is configured to remove a tissue sample from a surgical site when rotated;
rotating the cutting portion of the inner shaft to remove tissue from the surgical site; and
conveying the tissue through the opening between the inner shaft and the outer shaft and away from the surgical site
wherein the tip includes a curette in the form of a lip radially extending outward around an entire circumference of the tip,
wherein the lip has a diameter greater than a diameter of a distal end of the tip.

12. The method of claim 11 , wherein a portion of the inner shaft is angled.

13. The method of claim 12 , wherein the inner shaft includes a spring region in the form or a relief or spiral cut to angle the inner shaft.

14. The method of claim 11 , wherein a base of the cutting portion is offset relative to an outer diameter of the outer shaft to allow an enlarged gap between the cutting portion and the outer shaft.

15. The method of claim 14 , wherein the enlarged gap creates a non-coaxial exit path for the cut portion of the tissue in the tip.

16. The method of claim 11 , wherein the tip includes a blunt distal end, and an open window in the distal end.

17. The method of claim 11 , wherein the tip includes a plurality of teeth configured to provide a scissor-like effect when the cutting portion rotates against the plurality of teeth.

18. A method for removing tissue using a tissue removal device comprising an outer shaft having a removable tip attached to the outer shaft, a rotatable inner shaft extending through the outer shaft and having a cutting portion extending from the inner shaft, a base of the cutting portion being offset relative to an outer diameter of the outer shaft to allow an enlarged gap between the cutting portion and the outer shaft, the method comprising:
accessing an area for tissue removal;
cutting a portion of tissue at a surgical site by rotating the cutting portion of the inner shaft;
conveying the cut portion of the tissue through the enlarged gap providing for a non-coaxial exit path for the cut portion of the tissue in the tip; and
conveying the cut portion of tissue away from the surgical site through a space between the outer shaft and the inner shaft
wherein the tip includes a curette in the form of a lip radially extending outward around an entire circumference of the tip,
wherein the lip has a diameter greater than a diameter of a distal end of the tip.

Assignees

• Globus Medical Inc

Inventors

• Yoon Samuel
• Agard Ryan
• Pastor Jason
• Suh Sean
• Waite Daniel

Classifications

• A61B2017/00261

  Discectomy · CPC title

• A61B17/320016 Primary

  Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence) · CPC title

• A61B17/32002

  with continuously rotating, oscillating or reciprocating cutting instruments · CPC title

• A61B2017/00685

  Archimedes screw · CPC title

• A61B17/320725 Primary

  with radially expandable cutting or abrading elements (A61B17/32075 takes precedence) · CPC title