Membrane removing forceps

Patent metadata

Field	Value
Publication number	US-10004525-B2
Application number	US-201514967289-A
Country	US
Kind code	B2
Filing date	Dec 12, 2015
Priority date	Mar 12, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A membrane removing forceps may include a first forceps jaw having a first forceps jaw distal end and a first forceps jaw proximal end and a second forceps jaw having a second forceps jaw distal end and a second forceps jaw proximal end. The membrane removing forceps may include one or more abrasive surfaces configured to raise a portion of a membrane. A surgeon may raise a portion of a membrane by grazing the portion of the membrane with one or more abrasive surfaces of a membrane removing forceps. The surgeon may grasp the raised portion of the membrane with the first forceps jaw distal end and the second forceps jaw distal end. The surgeon may then remove the membrane by peeling the membrane apart from an underlying tissue.

First claim

What is claimed is:

1. An ophthalmic surgical forceps comprising:
a handle having a handle distal end and a handle proximal end;
a hypodermic tube having a hypodermic tube distal end and a hypodermic tube proximal end;
a surgical blank having a surgical blank distal end and a surgical blank proximal end, the surgical blank at least partially disposed in the hypodermic tube wherein the surgical blank has dimensions configured for performing ophthalmic surgical procedures;
a first abrasive surface of the surgical blank wherein the first abrasive surface is configured to raise a portion of a membrane;
a first plurality of micropillars of a first micropillar array of the first abrasive surface wherein each micropillar of the first plurality of micropillars has a micropillar height less than 3.0 micrometers;
a second abrasive surface of the surgical blank wherein the second abrasive surface is configured to raise the portion of the membrane; and
a second plurality of micropillars of a second micropillar array of the second abrasive surface wherein each micropillar of the second plurality of micropillars has a micropillar height less than 3.0 micrometers.

2. The ophthalmic surgical forceps of claim 1 wherein the first abrasive surface is manufactured by modifying the surgical blank.

3. The ophthalmic surgical forceps of claim 2 wherein the surgical blank is modified by laser ablation.

4. The ophthalmic surgical forceps of claim 2 wherein the surgical blank is modified by deep reactive-ion etching.

5. The ophthalmic surgical forceps of claim 1 wherein each micropillar of the first plurality of micropillars has a micropillar height of 2.25 micrometers.

6. The ophthalmic surgical forceps of claim 1 wherein the surgical blank is manufactured from a metal.

7. The ophthalmic surgical forceps of claim 1 wherein each micropillar of the first plurality of micropillars has a micropillar diameter less than 5.0 micrometers.

8. The ophthalmic surgical forceps of claim 1 wherein each micropillar of the first plurality of micropillars has a micropillar diameter in a range of 5.0 to 15.0 micrometers.

9. The ophthalmic surgical forceps of claim 1 wherein each micropillar of the first plurality of micropillars is oriented normal to a surface of the surgical blank.

10. The ophthalmic surgical forceps of claim 1 wherein each micropillar of the first plurality of micropillars is oriented at an angle in a range of 60.0 to 89.0 degrees relative to a surface of the surgical blank.

11. The ophthalmic surgical forceps of claim 1 wherein each micropillar of the first plurality of micropillars has a micropillar height configured to be less than an average thickness of the membrane.

12. The ophthalmic surgical forceps of claim 11 wherein each micropillar of the first plurality of micropillars has a micropillar height configured to be in a range of 80.0 to 95.0 percent of the average thickness of the membrane.

13. The ophthalmic surgical forceps of claim 1 wherein the membrane is an internal limiting membrane.

14. An ophthalmic surgical forceps comprising:
a handle having a handle distal end and a handle proximal end;
a hypodermic tube having a hypodermic tube distal end and a hypodermic tube proximal end;
a surgical blank having a surgical blank distal end and a surgical blank proximal end, the surgical blank at least partially disposed in the hypodermic tube wherein the surgical blank has dimensions configured for performing ophthalmic surgical procedures;
a first abrasive surface of a first portion of the surgical blank wherein the first abrasive surface is configured to raise a portion of a membrane;
a first plurality of micropillars of a first micropillar array of the first abrasive surface wherein each micropillar of the first plurality of micropillars has a micropillar height less than 3.0 micrometers and wherein each micropillar of the first plurality of micropillars has an orientation normal to a surface of the first portion of the surgical blank;
a second abrasive surface of a second portion of the surgical blank wherein the second abrasive surface is configured to raise the portion of the membrane; and
a second plurality of micropillars of a second micropillar array of the second abrasive surface wherein each micropillar of the second plurality of micropillars has a micropillar height less than 3.0 micrometers and wherein each micropillar of the second plurality of micropillars has an orientation normal to a surface of the second portion of the surgical blank.

15. The ophthalmic surgical forceps of claim 14 wherein the first abrasive surface is manufactured by modifying the surgical blank.

16. The ophthalmic surgical forceps of claim 15 wherein the surgical blank is modified by laser ablation.

17. The ophthalmic surgical forceps of claim 15 wherein the surgical blank is modified by deep reactive-ion etching.

18. The ophthalmic surgical forceps of claim 14 wherein each micropillar of the first plurality of micropillars has a micropillar height configured to be less than an average thickness of the membrane.

19. The ophthalmic surgical forceps of claim 18 wherein each micropillar of the first plurality of micropillars has a micropillar height configured to be in a range of 80.0 to 95.0 percent of the average thickness of the membrane.

20. The ophthalmic surgical forceps of claim 14 wherein the surgical blank is manufactured from a metal.

Assignees

• Katalyst Surgical Llc

Inventors

• Scheller Gregg D
• Chow David R

Classifications

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B17/295 Primary

  combined with cutting implements · CPC title

• A61B2017/00858

  high friction or non-slip · CPC title

• B23K26/0078

  Operations & Transport · mapped topic

• A61B2017/305

  Tweezer like handles with tubular extensions, inner slidable actuating members and distal tools, e.g. microsurgical instruments · CPC title