OCULAR LENS CUTTING DEVICE

• US 20140364885A1
• Filed: 07/05/2012
• Published: 12/11/2014
• Est. Priority Date: 07/08/2011
• Status: Active Grant

• Current Assignee: Doheny Eye Institute
• Original Assignee: Doheny Eye Institute
• Inventors: Kerns, Ralph, Humayun, Mark S., Wells, Trent Spencer, McCormick, Matthew T.
• Granted Patent: US 10,874,552 B2
• Time in Patent Office: Days
• US Class Current: 606/170
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61F 9/00754 for cutting or perforating the anterior lens capsule, e.g. capsulotomes
• CPC Class Codes: A61F 9/00763 with rotating or reciprocating cutting elements, e.g. concentric cutting needles atherectomy cutting instruments A61B17/3207; endoscopic cutting instruments A61B17/320016

Abstract

Ocular lens cutting devices and methods for cutting and removing tissue such as lens fragments from an eye of a patient are disclosed. In one embodiment, an ocular lens cutting device includes an outer member and an inner member positioned within the outer member. The outer member and the inner member can each include at least one cutting edge. The at least one cutting edge of the outer member and the at least one cutting edge of the inner member can cooperate to form a cutting structure as the inner member moves with respect to the outer member. The ocular lens cutting device can also be connected to a vacuum source which can allow the ocular lens cutting device to grasp the tissue to be cut and remove the cut fragments from the surgical area.

Claims

1. An ocular cutting device comprising:

a housing having a motor positioned within the housing;

an aspiration line; and

a working end coupled to the aspiration line, the working end comprising;

an outer sleeve member coupled in fixed relationship to the housing and having a proximal end and a distal end, the proximal end coupled to the housing, the distal end having first and second openings, the first opening having a first cutting edge; and

an inner sleeve member having a proximal end and a distal end, the inner sleeve member positioned within the outer sleeve member, the motor operatively coupled to the proximal end to move the inner sleeve member relative to the outer sleeve member, the inner sleeve member having a third opening with a second cutting edge wherein the first opening and third opening are configured to interact to cut tissue between the first and second cutting edges; and

wherein the second opening of the outer sleeve is configured to remain unobstructed by the movement of the inner sleeve such that a vacuum applied to the working end through the aspiration line allows the second opening to hold a tissue mass at a first location of the tissue mass while the tissue mass is cut and removed by the working end at a second location of the tissue mass spaced from the first location.

2. The device of claim 1, wherein the second opening is proximal to the first opening and where the inner sleeve member has an elongated opening corresponding to the second opening such that the second opening remains unobstructed by the movement of the inner sleeve.

3. The device of claim 1, wherein the aspiration line is coupled to the housing.

4. The device of claim 1, wherein a portion the aspiration line comprises a part of the housing.

5. The device of claim 1, wherein the first opening is located proximal to the second opening on the outer sleeve.

6. The device of claim 1, wherein the outer sleeve comprises a tubular, cylindrical member.

7. The device of claim 1, wherein the inner sleeve further comprises a fourth opening having a third cutting edge, the fourth opening configured to interact with the first opening to cut tissue between the first and third cutting edges.

8. The device of claim 7, wherein the third opening comprises an open distal end of the inner sleeve.

9. The device of claim 8, wherein the fourth opening has a center axis perpendicular to the axis of the inner sleeve.

10. The device of claim 1, wherein the first opening comprises three generally circular or elliptical cutouts and the third opening comprises two generally circular or elliptical cutouts.

11. The device of claim 1, wherein the inner sleeve is configured for either of linear or rotational movement with respect to the outer sleeve

12. An ocular cutting device comprising:

a housing having a handle configured for single handed articulation by a user;

a stationary outer tubular cutting member having a proximal end and a distal end, the proximal end coupled to the housing, the distal end having a first port and a second port, the first port having a first cutting edge;

a motor positioned within the housing;

an inner cutting member having a proximal end and a distal end, the inner cutting member positioned within the stationary outer tubular cutting member, the motor coupled to the proximal end to move the inner cutting member relative to the stationary outer tubular cutting member, the inner cutting member having a second cutting edge at the distal end;

an aspiration line coupled to the inner cutting member; and

wherein the second port of the outer tubular cutting member is configured to remain unobstructed by the movement of the inner cutting member to cut tissue such that vacuum applied through the aspiration line allows the second port to remain attached to tissue while tissue is cut and removed at the first port.

13. The device of claim 12 wherein the second port is proximal to the first port and where the inner cutting member has an elongated opening corresponding to the second port such that the second port remains unobstructed by the movement of the inner cutting member.

14. The device of claim 12, wherein the inner cutting member comprises a tubular member having a third port in a wall of the tubular member, the third port comprising a cutting edge.

15. The device of claim 12, wherein the first port is located proximal to the second port on the outer tubular cutting member.

16. The device of claim 12, wherein the inner cutting member comprises a tubular, cylindrical member.

17. A method of using an ocular cutting device during surgery of the eye, the method comprising:

advancing a distal end of an ocular cutting device into a surgical site within the eye, the ocular cutting device having;

an outer tubular cutting member having first and second openings at the distal end, the first opening having a first cutting edge;

an inner cutting member having a third opening with a second cutting edge; and

an aspiration line configured to apply a vacuum to the distal end of the ocular cutting device at the first and second openings;

applying a vacuum to the distal end of the ocular cutting device at the first and second openings;

purchasing a lens of an eye with the suction from the vacuum at the first and/or second openings of the ocular cutting device;

drawing a first portion of the lens into the first opening in the outer tubular cutting member;

moving the inner cutting member with respect to the outer tubular cutting member and cutting off the first portion of the lens at the first opening to create a first lens fragment, while at the second opening, the lens remains grasped by the ocular cutting device; and

removing the first lens fragment from the surgical site through suction and through the aspiration line.

18. The method of claim 17, wherein moving the inner cutting member with respect to the outer tubular cutting member comprises moving the inner cutting member in at least one of a linear manner and a rotational manner with respect to the outer tubular cutting member.

19. The method of claim 17, further comprising drawing a second portion of the lens into the first opening in the outer tubular cutting member;

and fragmenting the second portion of the lens by moving the inner cutting member with respect to the outer tubular cutting member and cutting off the second portion of the lens at the first opening to create a second lens fragment while at the second opening, the lens remains grasped by the ocular cutting device.

20. The method of claim 17, wherein the an inner cutting member further comprises a tubular member such that removing the lens fragment from the surgical site through suction and through the outer tubular cutting member further comprises removing the lens fragment through the inner cutting member.

21-23. -23. (canceled)