Surgical disc removal tool

Patent metadata

Field	Value
Publication number	US-10675049-B2
Application number	US-201715797094-A
Country	US
Kind code	B2
Filing date	Oct 30, 2017
Priority date	Jan 31, 2012
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

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 tissue removal device comprising:
an outer shaft having a removable tip;
a rotatable inner shaft extending through the outer shaft and having a cutting portion extending from the inner shaft;
wherein the cutting portion is configured to rotate to cut a portion of tissue at a surgical site,
wherein the tissue removal device is configured to convey the cut portion of tissue away from the surgical site through a space between the outer shaft and the inner shaft, and
wherein the tip includes a curette in the form of a lip radially extending outward around an entire circumference of the tip.

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

3. The device 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 device of claim 1 , wherein the inner shaft is substantially straight.

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

8. The device 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 device of claim 1 , wherein the cut portion of tissue is conveyed via suction.

10. The device 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 tissue removal device comprising:
an elongate outer shaft having a removable tip and 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;
wherein the cutting portion is configured to rotate to remove tissue from the surgical site,
wherein the tissue removal device is configured to convey tissue through the opening between the inner shaft and the outer shaft and away from the surgical site, and
wherein the tip includes a curette in the form of a lip radially extending outward around an entire circumference of the tip.

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

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

17. The device 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 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, 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,
wherein the cutting portion is configured to rotate to cut a portion of tissue at a surgical site,
wherein the tissue removal device is configured to convey the cut portion of the tissue through the enlarged gap that provides for a non-coaxial exit path for the cut portion of the tissue in the tip,
wherein the tissue removal device is configured to convey the cut portion of tissue away from the surgical site through a space between the outer shaft and the inner shaft, and
wherein the tip includes a curette in the form of a lip radially extending outward around an entire circumference of the tip.

Assignees

• Globus Medical Inc

Inventors

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

Classifications

• A61B2217/007

  with irrigation system · CPC title

• A61B2017/320064

  with tissue or sample retaining means · CPC title

• A61B17/320708

  Curettes, e.g. hollow scraping instruments · CPC title

• A61B17/320758

  with a rotating cutting instrument, e.g. motor driven (A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002) · CPC title

• A61B2017/320733

  with a flexible cutting or scraping element, e.g. with a whip-like distal filament member · CPC title