Reusable cartridge assembly for a phaco machine

• US 5,533,976 A
• Filed: 07/15/1994
• Issued: 07/09/1996
• Est. Priority Date: 07/15/1994
• Status: Expired due to Term

• Current Assignee: Abbott Medical Optics Incorporated (Johnson & Johnson)
• Original Assignee: Allergan, Inc. (Canada) (Abbvie Incorporated)
• Inventors: Cole, Mark S., Zaleski, Edward R.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US08/276,085
• Time in Patent Office: 725 Days
• Field of Search: 604/30, 604/31, 604/32-34, 604/35, 604/65-67, 604/118, 604/119, 604/151, 604/153
• US Class Current: 604/153
• CPC Class Codes: A61M 1/72 Cassettes forming partially or totally the fluid circuit
• 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 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 3/0201 Cassettes therefor

Abstract

A reusable cartridge assembly for a phaco machine includes a first plate with a plurality of flow channels therein and a sealing gasket with a sheet for sealing against the first plate to prevent fluid from leaving the flow channels. In addition, a tube is provided, fixed to the sealing gasket and protruding therefrom, for enabling engagement between the tube and a pump head for circulation of fluid through flow channels. A second plate is provided for applying a sealing pressure between the sheet and the first plate. In addition, the sealing gasket may include a sensing element for determining pressure within the flow channels.

Claims

1. A reusable cartridge assembly for a phaco machine, said reusable cartridge assembly comprising:

a first plate having means for defining a plurality of flow channels therein;

a sealing gasket including sheet means for sealing against said first plate to prevent fluid from leaving said flow channels, and tube means, communicating with said sealing gasket and protruding from the sheet means, for enabling engagement between said tube means and a pump head in order to circulate fluid through the flow channels; and

second plate means for supplying a sealing pressure between the sheet means and the first plate.

2. The reusable cartridge assembly according to claim 1 wherein said second plate means comprises means, defining flow channels therein, for enabling fluid to pass from the flow channels in said first plate into the flow channels in said second plate means and thereafter into and out of the tube means.

3. The reusable cartridge assembly according to claim 2 means, comprising a cutout portion in each of the first plate, sheet means and second plate means, for enabling the pump head to be disposed within an outside envelope of the reusable cartridge.

4. The reusable cartridge assembly according to claim 3 wherein said flow channels in said first plate are in fluid communication with inlet and outlet nipples disposed on edges of said first plate.

5. The reusable cartridge assembly according to claim 4 wherein said first plate further comprises means for defining a cavity in said first plate, said cavity being in fluid communication with said flow channels in the first plate, and said sealing gasket further comprises a pressure-sensing element and diaphragm means for suspending the pressure-sensing element within the sheet means and aligned with said cavity.

6. The reusable cartridge assembly according to claim 5 wherein said second plate means comprises means, defining openings therein, for enabling plunger access to the sealing gasket and flow channels in order to regulate fluid flow therein.

7. The reusable cartridge assembly according to claim 5 wherein the pressure-sensing element comprises a ferromagnetic disk.

8. The reusable cartridge assembly according to claim 5 wherein the pressure-sensing element comprises a laser light reflector.

9. The reusable cartridge assembly according to claim 5 wherein the pressure-sensing element comprises an ultrasound reflector.

10. The reusable cartridge assembly according to claim 5 wherein said diaphragm means surrounds said pressure-sensing element.

11. A reusable cartridge assembly for a phaco machine, said reusable cartridge assembly comprising:

a first plate having means for defining a plurality of flow channels therein and means for defining a cavity in said first plate, said cavity being in fluid communication with said flow channels;

a sealing gasket including sheet means for sealing against said first plate to prevent fluid from leaving said flow channels, a pressure-sensing element and diaphragm means for suspending the pressure-sensing element within the sheet means and aligned with said cavity; and

second plate means for applying a sealing pressure between the sheet means and the first plate.

12. The reusable cartridge assembly according to claim 11 wherein the pressure-sensing element comprises a ferromagnetic disk.

13. The reusable cartridge assembly according to claim 11 wherein the pressure-sensing element comprises a laser light reflector.

14. The reusable cartridge assembly according to claim 11 wherein the pressure-sensing element comprises an ultrasound reflector.

15. The reusable cartridge assembly according to claim 11 wherein said diaphragm means surrounds said pressure-sensing element.

16. The reusable cartridge assembly according to claim 11 further comprising a tube and means, attaching said tube to the sheet means, for enabling engagement between said tube and a pump head in order to circulate fluid through the flow channels.

17. The reusable cartridge assembly according to claim 16 wherein said second plate means comprises means, defining flow channels therein, for enabling fluid to pass from the flow channels in said first plate into the flow channels in said second plate means and thereafter into and out of the tube means.

18. The reusable cartridge assembly according to claim 17 means, comprising a cutout portion in each of the first plate, sheet means and second plate means, for enabling the pump head to be disposed within an outside envelope of the reusable cartridge.

19. The reusable cartridge assembly according to claim 18 wherein said flow channels in said first plate are in fluid communication with inlet and outlet nipples disposed on edges of said first plate.

20. A reusable cartridge assembly for a phaco machine, said reusable cartridge assembly comprising:

a first plate having means for defining at least one channel therein;

a sealing gasket including sheet means for sealing against said first plate means, defining at least one conduit therein, for enabling fluid to circulate through the sealing gasket and tube means fixed to said sealing gasket and protruding from the sheet means, for enabling engagement between said tube means and a pump head in order to circulate fluid through the gasket conduit and

second plate means for supplying a sealing pressure between the sheet means and the first plate.

21. The reusable cartridge assembly according to claim 20 wherein said first plate further comprises means for defining a plurality of flow channels therein, and said sealing gasket means further comprises portions thereof for preventing fluid from leaving said flow channels.

22. The reusable cartridge assembly according to claim 20 wherein said second plate means comprises means, defining openings therein, for enabling plunger access to the gasket conduit in order to regulate fluid flow therein.

23. The reusable cartridge assembly according to claim 21 wherein said second plate means comprises means, defining flow channels therein, for enabling fluid to pass from the flow channels in said first plate into the flow channels in said second plate means and thereafter into and out of the tube means.

24. The reusable cartridge assembly according to claim 23 means, comprising a cutout portion in each of the first plate, sheet means and second plate means, for enabling the pump head to be disposed within an outside envelope of the reusable cartridge.

25. The reusable cartridge assembly according to claim 24 wherein said flow channels in said first plate are in fluid communication with inlet and outlet nipples disposed on edges of said first plate.

26. The reusable cartridge assembly according to claim 25 wherein said first plate further comprises means for defining a cavity in said first plate, said cavity being in fluid communication with said flow channels in the first plate, and said sealing gasket further comprises a pressure-sensing element and diaphragm means for suspending the pressure-sensing element within the sheet means and aligned with said cavity.

27. The reusable cartridge assembly according to claim 25 wherein the pressure-sensing element comprises a ferromagnetic disk.

28. The reusable cartridge assembly according to claim 25 wherein the pressure-sensing element comprises a laser light reflector.

29. The reusable cartridge assembly according to claim 25 wherein the pressure-sensing element comprises an ultrasound reflector.

30. The reusable cartridge assembly according to claim 25 wherein said diaphragm means surrounds said pressure-sensing element.