Fluid chamber

• US 7,942,853 B2
• Filed: 01/11/2006
• Issued: 05/17/2011
• Est. Priority Date: 01/11/2006
• Status: Active Grant

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon Incorporated
• Inventors: Svetic, Ralph E.
• Primary Examiner(s): Stigell; Theodore J
• Assistant Examiner(s): SCHMIDT, EMILY LOUISE
• Application Number:
  US11/329,800
• Publication Number:
  US 20070161954A1
• Time in Patent Office: 1,952 Days
• Field of Search: 604/118, 604/122, 604/123, 604/131, 417/477.2, 417/313, 952/60, 952/62, 962/04, 962/07, 962/15, 962/20
• US Class Current: 604/122
• 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: 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

Abstract

A fluid chamber having an inlet and an outlet at the top of the chamber. The inlet is arrange so that fluid entering the chamber at the inlet sweeps the top of the chamber so as to direct any air bubbles naturally collecting at the top of the chamber or which may be trapped in the entering fluid stream toward the outlet.

Claims

1. A fluid chamber, comprising:

a) a top comprising a plurality of sloping surfaces forming a plurality of pointed edges where adjacent sloping surfaces intersect, the plurality of sloping surfaces forming a saw tooth-like pattern;

b) an inlet at a top of the chamber; and

c) an outlet located opposite the inlet at the top of the fluid chamber so that fluid flowing into the chamber through the inlet flows directly across the top and toward the outlet, the top being formed from the plurality of sloping surfaces along a length of the fluid chamber from the inlet to the outlet,

wherein adjacent sloping surfaces define a ridge, wherein the ridges are identical to each other, and wherein each ridge has a constant cross-sectional shape.

2. The chamber of claim 1 wherein the plurality of pointed edges minimize an air bubble contact area of the top.

11. The fluid chamber of claim 1, wherein fluid flowing into the chamber through the inlet directly across the top and toward the outlet defines a fluid flow path and wherein the plurality of pointed edges are disposed transversely to the fluid flow path.

12. The fluid chamber of claim 1, wherein the fluid flow path is free of obstructions.

13. The fluid chamber of claim 1, wherein the top is formed from a rigid material.

14. The fluid chamber of claim 1, wherein the top further comprises a plurality of parallel channels extending from the inlet to the outlet.

3. A cassette, comprising:

a) a body;

b) a fluid chamber formed in the body, the fluid chamber being formed as a hollow void in the body;

c) an inlet in the fluid chamber at a top of the fluid chamber, the top of the fluid chamber comprising a plurality of sloping surfaces forming a plurality of pointed edges where adjacent sloping surfaces intersect, the plurality of sloping surfaces forming a saw tooth-like pattern;

d) an outlet in the fluid chamber, the outlet located opposite the inlet at the top of the fluid chamber so that fluid flowing into the chamber through the inlet flows directly across the top and toward the outlet, the top being formed from the plurality of sloping surfaces along a length of the fluid chamber from the inlet to the outlet,

wherein adjacent sloping surfaces define a ridge, wherein the ridges are identical to each other, and wherein each ridge has a constant cross-sectional shape.

4. The cassette of claim 3 wherein the cassette further comprises a pumping segment in fluid communication with the outlet.

5. The cassette of claim 3 further comprising an aspiration tubing connected to the cassette.

6. The cassette of claim 4 further comprising an aspiration tubing connected to the cassette and in fluid communication with the pumping segment.

15. The cassette of claim 3, wherein fluid flowing into the chamber through the inlet directly across the top and toward the outlet defines a fluid flow path and wherein the plurality of sloping surfaces extend in a direction transverse to the fluid flow path.

16. The cassette of claim 3, wherein the fluid flow path is free of obstructions.

17. The cassette of claim 3, wherein the plurality of sloping surfaces are formed from a rigid material.

18. The cassette of claim 3, wherein the top further comprises a plurality of parallel channels extending from the inlet to the outlet.

7. A surgical system, comprising:

a) a surgical console having a cassette receiving portion;

b) a surgical cassette received by the console in the cassette receiving portion, the cassette having

i) a body;

ii) a fluid chamber formed in the body;

iii) an inlet in the fluid chamber at a top of the fluid chamber, the top comprising a plurality of sloping surfaces forming a plurality of pointed edges where adjacent sloping surfaces intersect, the plurality of sloping surfaces forming a saw tooth-like pattern; and

iv) an outlet in the fluid chamber, the outlet located opposite the inlet at the top of the fluid chamber so that fluid flowing into the chamber through the inlet flows directly across the top and toward the outlet, the top being formed from the plurality of sloping surfaces along a length of the fluid chamber from the inlet to the outlet,

wherein adjacent sloping surfaces define a ridge, wherein the ridges are identical to each other, and wherein each ridge has a constant cross-sectional shape.

8. The surgical system of claim 7 wherein the cassette further comprises a pumping segment.

9. The surgical system of claim 7 further comprising an aspiration tubing connected to the cassette and in fluid communication with the inlet.

10. The surgical system of claim 7 further comprising an aspiration tubing connected to the cassette and in fluid communication with the pumping segment.

19. The surgical system of claim 7, wherein fluid flowing into the chamber through the inlet directly across the top and toward the outlet defines a fluid flow path and wherein the plurality of sloping surfaces extend in a direction transverse to the fluid flow path.

20. The surgical system of claim 7, wherein the fluid flow path is free of obstructions.

21. The surgical system of claim 7, wherein the plurality of sloping surfaces are formed from a rigid material.

22. The surgical system of claim 7, wherein the top further comprises a plurality of parallel channels extending from the inlet to the outlet.