Capsulotomy instrument

• US 20060264990A1
• Filed: 04/11/2006
• Published: 11/23/2006
• Est. Priority Date: 04/13/2005
• Status: Active Grant

• Current Assignee: Safe Surgery Technologies LLC
• Original Assignee: Safe Surgery Technologies LLC
• Inventors: Michelson, David Scott, Sivan, Tovy, Kilemnik, Ido
• Granted Patent: US 9,675,495 B2
• Time in Patent Office: Days
• US Class Current: 606/166
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61F 9/00754 for cutting or perforating the anterior lens capsule, e.g. capsulotomes
• CPC Class Codes: A61F 9/0133 Knives or scalpels specially adapted therefor

Abstract

A capsulotomy cutting device, including a planar cutting head sized to fit into intraocular tissue, including at least one sharp edge and an oscillation mechanism adapted to oscillate the cutting head.

Claims

1. A capsulotomy cutting device, comprising:

a planar cutting head sized to fit into intraocular tissue, including at least one sharp edge; and

an oscillation mechanism adapted to oscillate the cutting head.

2. A cutting device according to claim 1, wherein the at least one sharp edge comprises a pair of edges on opposite surfaces of the cutting head.

3. A cutting device according to claim 1, wherein the planar cutting head comprises a convex cutting head.

4. A cutting device according to claim 1, wherein the planar cutting head comprises a curvilinear cutting head.

5. A cutting device according to claim 1, wherein the cutting head is semicircular.

6. A cutting device according to claim 1, wherein the cutting head has a shape of half of an ellipse.

7. A cutting device according to claim 1, wherein the at least one sharp edge spans over at least 135°

.

8. A cutting device according to claim 1, wherein the at least one sharp edge has a diameter of between about 3-9 millimeters.

9. A cutting device according to claim 1, wherein the cutting head has a shape adjustable within intraocular tissue.

10. A cutting device according to claim 9, wherein the cutting head comprises a super elastic material.

11. A cutting device according to claim 1, wherein the oscillation mechanism oscillates at a rate of at least 10 Hz.

12. A cutting device according to claim 1, wherein the oscillation mechanism is driven by a piezoelectric crystal.

13. A cutting device according to claim 1, wherein the oscillation mechanism comprises an eccentric motor.

14. A cutting device according to claim 1, wherein the cutting head is held on a handle and the oscillation mechanism oscillates the cutting head along a longitudinal axis of the handle.

15. A cutting device according to claim 1, wherein the cutting device is removably coupled to the oscillation mechanism.

16. A cutting device according to claim 1, wherein the at least one sharp edge has a length of more than 1 mm.

17. A cutting device according to claim 1, comprising a removable cover adapted to cover the cutting head and to be removable within intraocular tissue.

18. A cutting device according to claim 1, comprising a pivot coupled to the cutting head, allowing controllable rotation of the cutting head.

19. A method of cutting an incision in internal body tissue, comprising:

inserting a planar cutting head through an incision in body tissue;

placing a cutting edge of the cutting head against tissue; and

oscillating the cutting head, by an oscillation mechanism coupled to the cutting head.

20. A method according to claim 19, wherein the cutting edge has a larger diameter than the incision through which the cutting head is inserted.

21. A method according to claim 19, wherein the cutting edge has a first configuration when it is inserted through the incision and a second configuration when placed against tissue.

22. A method according to claim 21, wherein the cutting head is compressed to a thin straight line in the first configuration.

23. A method according to claim 19, wherein the cutting edge has a same configuration when inserted through the incision and when placed against tissue.