DEVICES, SYSTEMS, AND METHODS FOR TIP VACUUM CONTROL DURING ASPIRATION

• US 20170151091A1
• Filed: 02/13/2017
• Published: 06/01/2017
• Est. Priority Date: 12/05/2013
• Status: Active Grant

• Current Assignee: Alcon Incorporated
• Original Assignee: Novartis Ag
• Inventors: Bourne, John Morgan, Carpenter, John Richard
• Granted Patent: US 10,617,562 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 9/00736 Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments A61F9/008 takes precedence
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/772 operating alternately
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 1/85 with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61M 2210/0612 Eyes
• CPC Class Codes: A61M 3/0216 Pressure
• CPC Class Codes: A61M 3/0283 with at least two inner passageways, a first one for irrigating and a second for evacuating suction-irrigation systems A61M1/77; aspiration tips with fluid supply means A61M1/85; for negative pressure wound therapy A61M1/92

Abstract

Disclosed herein is an apparatus for insertion in an eye of a patient for aspirating material from the eye in the treatment of an ocular condition, the apparatus comprising a needle disposed at a distal end of the apparatus, an aspiration channel extending from a distal aperture of the needle to a proximal end of the apparatus, and an irrigation sleeve coaxially disposed about the needle. The aspiration channel comprises a proximal portion having a first diameter, a bypass portion having a second diameter and at least one bypass port, and a distal portion having a third diameter. The second diameter is larger than the first diameter. The irrigation sleeve and the needle form an annular irrigation passageway therebetween. The bypass port is shaped and configured to establish fluid communication between the irrigation passageway and the aspiration channel.

Claims

1-16. -16. (canceled)

17. An apparatus for insertion in an eye of a patient for aspirating material from the eye in a treatment of an ocular condition, the apparatus comprising:

a needle disposed at a distal end of the apparatus, the needle including a distal aperture;

an aspiration channel extending from the distal aperture of the needle to a proximal end of the apparatus, the aspiration channel comprising a proximal portion having a first diameter, a bypass portion having a second diameter, and a distal portion having a third diameter, wherein the second diameter is larger than the third diameter;

an irrigation passageway coaxially disposed about at least a portion of the bypass portion and the distal portion of the aspiration channel; and

at least one bypass port formed in a wall between the bypass portion of the aspiration channel and the irrigation passageway to establish direct fluid communication between the irrigation passageway and the aspiration channel.

18. The apparatus of claim 17, wherein the bypass port is located in the bypass portion between the distal portion and a threaded region of the wall between the aspiration channel and the irrigation passageway.

19. The apparatus of claim 18, wherein the threaded region of the wall has an internal diameter that matches the second diameter.

20. The apparatus of claim 17, wherein the second diameter and the third diameter are equal.

21. The apparatus of claim 17, further comprising an irrigation sleeve coaxially disposed about the needle, the irrigation sleeve and the needle forming at least a portion of the irrigation passageway therebetween.

22. The apparatus of claim 21, wherein the irrigation passageway extends proximal an end of the irrigation sleeve coupled to the apparatus.

23. The apparatus of claim 21, further comprising a sealing element disposed on the irrigation sleeve adjacent the irrigation passageway, the sealing element being shaped and configured to selectively seat against the at least one bypass port and block fluid flow through the at least one bypass port with application of force on the sealing element.

24. The apparatus of claim 23, wherein the sealing element comprises a displaceable portion of the irrigation sleeve configured to shift into the irrigation passageway to seat against the at least one bypass port with the application of force upon the sealing element in the direction of the aspiration channel.

25. The apparatus of claim 24, further comprising an annular chamber formed within the irrigation sleeve to circumferentially surround the aspiration channel, wherein the sealing element is disposed on the irrigation sleeve between the annular chamber and the irrigation passageway.