Devices and methods for ocular surgery

Patent metadata

Field	Value
Publication number	US-11607338-B2
Application number	US-201916404252-A
Country	US
Kind code	B2
Filing date	May 6, 2019
Priority date	May 4, 2017
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile.

First claim

What is claimed is:

1. A device for performing an ophthalmic procedure in an eye, the device comprising:
a proximal portion; and
a distal portion coupled to the proximal portion, the distal portion further comprising:
an elongate member sized and configured to extend through an anterior chamber of the eye and to a capsular bag of the eye, the elongate member comprising an open distal end;
a plurality of vacuum sources movable to generate pulses of discontinuous negative pressure, each of the plurality of vacuum sources is detachably physically coupleable to the proximal portion;
a vacuum chamber operatively coupled to each of the plurality of vacuum sources and having a first cross-sectional area; and
a first pathway operatively coupling the open distal end of the elongate member to the vacuum chamber, the first pathway comprising a second cross-sectional area smaller than the first cross-sectional area of the first chamber; and

further wherein, in use, the device is configured to aspirate material from the capsular bag of the eye through the open distal end and into the first pathway.

2. The device of claim 1 , wherein the vacuum chamber is located distally of at least one of the plurality of vacuum sources.

3. The device of claim 1 , wherein, with the device in use, material aspirated into the first pathway passes through the vacuum chamber and towards at least one of the plurality of vacuum sources.

4. The device of claim 3 , wherein the material passes into at least one of the plurality of vacuum sources through a first one-way valve.

5. The device of claim 4 , wherein the first one-way valve is compliant.

6. The device of claim 1 , further comprising a disposal chamber operatively coupled to each of the plurality of vacuum sources.

7. The device of claim 6 , wherein material aspirated into the first pathway passes through at least one of the plurality of vacuum sources and into the disposal chamber.

8. The device of claim 7 , wherein the material aspirated into the first pathway passes from at least one of the plurality of vacuum sources into the disposal chamber through a second one-way valve.

9. The device of claim 6 , further comprising a plurality of one-way valves, each of the plurality of vacuum sources operatively coupled to at least one inlet one-way valve, and at least one outlet one-way valve.

10. The device of claim 6 , wherein the disposal chamber at least partially surrounds the vacuum chamber.

11. The device of claim 6 , wherein the disposal chamber is separated from the vacuum chamber by at least one common wall.

12. The device of claim 6 , wherein the disposal chamber is fluidly separated from the vacuum chamber by at least one gasket.

13. The device of claim 1 , wherein at least one of the plurality of vacuum sources comprises a piston and a cylinder.

14. The device of claim 1 , wherein each of the plurality of vacuum sources comprises a piston and cylinder.

15. The device of claim 14 , wherein each of the plurality of vacuum sources is housed within the distal portion of the device.

16. The device of claim 15 , wherein the proximal portion comprises a reusable portion and the distal portion comprises a disposable portion, the proximal portion further comprising at least one motor operatively coupled to each of the plurality of vacuum sources.

17. The device of claim 1 , further comprising at least one motor for powering each of the plurality of vacuum sources, the motor operatively coupled to each of the plurality of vacuum sources via a cam assembly, and at least one actuator for activating the motor to power the plurality of vacuum sources.

18. The device of claim 17 , wherein the actuator is mounted on the distal portion of the device.

19. The device of claim 17 , wherein the actuator is mounted on the proximal portion of the device.

20. The device of claim 17 , wherein the actuator is able to vary a speed of the motor, in order to control an amount of vacuum applied by at least one of the plurality of vacuum sources.

21. The device of claim 20 , wherein as the actuator is depressed more, the speed of the motor increases, and as the actuator is depressed less, the speed of the motor decreases.

22. The device of claim 1 , wherein the proximal portion is hand-held.

23. The device of claim 1 , wherein each of the plurality of vacuum sources comprises a piston housed within a cylinder, and wherein the plurality of vacuum sources are arranged adjacently within the distal portion of the device.

24. The device of claim 23 , further comprising at least one adjustable piston hard-stop for reducing a level of vacuum achievable by the piston housed within the cylinder by limiting a retraction distance of the piston when the piston hard-stop is engaged.

25. The device of claim 1 , wherein the elongate member is configured to be oscillated.

26. The device of claim 25 , wherein the elongate member is configured to be asymmetrically oscillated.

27. The device of claim 26 , wherein the elongate member has a maximum extension speed greater than a maximum retraction speed.

28. The device of claim 27 , wherein the maximum retraction speed of the elongate member is below a threshold speed at which cavitation bubbles are generated in the eye.

29. The device of claim 25 , wherein a motor and a cam assembly operate each of the plurality of vacuum sources and also drive oscillation of the elongate member.

30. The device of claim 26 , wherein a motor and a cam assembly are operatively coupled to each of the plurality of vacuum sources and the elongate member such that a pulse of vacuum generated by at least one of the plurality of vacuum sources is timed to occur before the elongate member retracts.

31. The device of claim 26 , wherein a motor and a cam assembly are operatively coupled to each of the plurality of vacuum sources and the elongate member such that at least a portion of a pulse of vacuum generated by at least one of the plurality of vacuum sources is timed to occur while the elongate member retracts.

32. The device of claim 1 , wherein the vacuum chamber is physically within the device and distal of each of the plurality of vacuum sources.

Assignees

• Zeiss Carl Meditec Inc

Inventors

• Clauson Luke W
• Schaller Michael
• Chamness Scott
• Reese Brendan

Classifications

• A61B2217/005

  with suction drainage system · CPC title

• A61B2017/32006

  with a cutting strip, band or chain, e.g. like a chainsaw · CPC title

• A61B2017/320024

  Morcellators, e.g. having a hollow cutting tube with an annular cutter for morcellating and removing tissue · CPC title

• A61B17/221

  Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)} · CPC title

• A61F9/008

  using laser · CPC title