Disposable vacuum/peristaltic pump cassette system

• US 5,125,891 A
• Filed: 10/05/1988
• Issued: 06/30/1992
• Est. Priority Date: 04/27/1987
• Status: Expired due to Fees

• Current Assignee: Chiron Vision Corp. (Novartis Ag)
• Original Assignee: Site Microsurgical Systems, Inc.
• Inventors: Paganelli, Jude V., Cook, Kenneth P., Hossain, K. Mosaddeq, Bross, Robert M., Fischer, Bernd R.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): CERMAK, ADAM
• Application Number:
  US07/253,801
• Time in Patent Office: 1,364 Days
• Field of Search: 604/22, 604/30-35, 604/118-120, 604/67, 604/153, 604/250, 604/317, 128/DIG. 12, 128/DIG. 13, 417/474-477, 417/360
• US Class Current: 604/34
• CPC Class Codes: A61F 9/00 Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand caps with means for protecting the eyes A42B1/018; visors for helmets A42B3/22; retractors A61B17/02; manipulators specially adapted for use in surgery A61B34/70; appliances to aid invalids to move about A61H3/00; exercisers for the eyes A61H5/00; eye baths A61H35/02; sunglasses or goggles having the same features as spectacles G02C
• 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 1/72 Cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 1/7411 by changing the size of a vent in combination with changing the cross-section of the line A61M1/7413
• 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 1/82 Membrane pumps, e.g. bulbs
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/125 with incorporated filters
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 3/0201 Cassettes therefor
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A microsurgical irrigation/aspiration system is provided, including a controller having a pump roller head, actuators for occluding fluid lines, a suction sensor, and means for mounting a pump cassette. The system cassette is suitable for mounting on the controller and has an opening with a pump segment passing along an arcuate wall of the opening. When the cassette is mounted on the console, the roller head is engaged in the cassette opening and compresses the pump segment against the arcuate wall. An infusion line passes through the cassette and is occludable by one of the actuators, and a vent line connected to the pump segment is occludable by a second actuator. A suction sensing port on the cassette couples with the suction sensor in the controller. In an alternate embodiment, a cassette is disclosed within which both vacuum and peristaltic pumping is possible. Latching may be accomplished by a plunger attached to the sensory port of the cassette.

Claims

1. A microsurgical irrigation/aspiration system, comprising:

an irrigation/aspiration instrument having pumping means with a plane along which pumping may take place; and

removable cassette means containing an aspiration pumping segment which cooperates with said pumping means in the performance of either peristaltic or vacuum pumping, said cassette means having a wall defining an aperture for engaging said pumping segment with said pumping means, said cassette means being adapted for mounting to said instrument in the plane of said pumping means, said cassette means further including a selectably occludable infusion line passing therethrough.

2. The microsurgical irrigation/aspiration system of claim 1 further comprising mounting means securely engaging said pumping means with said aperture of said cassette.

3. The system of claim 1 wherein said instrument contains an outermost panel and said pumping means comprises roller head means for performing peristaltic pumping, axially extending from said outermost panel and including a plurality of rollers located in a plane offset from and parallel to the plane of said outermost panel and said removable cassettes means cooperating with said roller head means in the performance of peristaltic pumping, said cassette means engaging said roller head means so that said cassette is located in said offset plane and said aperture radially surrounds said rollers of said roller head means with said pumping segment located between said roller head means and said aperture.

4. The system of claim 3 wherein said aperture is larger than said roller head means to allow said cassette means to initially engage said roller head means without compressing said pumping segment.

5. The system of claim 4, further comprising mounting means extending from said outermost panel for securely engaging said roller head means in said aperture with said pumping segment compressed between said roller head means and said aperture.

6. A microsurgical irrigation/aspiration system comprising:

a console including pumping means for performing either peristaltic or vacuum pumping, mounting means for engaging a pumping segment, and latch means for applying a compressive force to a disposable cassette; and

a disposable cassette, having a pumping segment and having a wall including an opening for engaging and surrounding said pumping means by means of said pumping segment, and engaging means located on said cassette for engaging said mounting means;

wherein said latch means applies a compressive force to said cassette to maintain the engagement of said engaging means and said mounting means and to maintain engagement of said pumping means with said pumping segment.

7. The system of claim 6 wherein said console includes roller head means for performing peristaltic pumping;

said opening engages and surrounds said roller head means, said pumping segment located in said opening and opposing said wall of said cassette; and

said latch means compresses said pumping segment between said wall and said roller head means.

8. A microsurgical irrigation/aspiration system, including:

a disposable cassette having;

an exterior wall abutting at least two other outer walls, each of said walls intersecting at a corner;

an opening defined by a portion of said exterior wall for engaging and surrounding a pumping means, said pumping means capable of performing either peristaltic or vacuum pumping;

a pumping segment for aspiration located in said opening and suitable for engagement with said pumping means for the performance of said pumping;

mounting means located on said cassette for engaging bracket means on a console containing pumping means in order to mount said cassette on said console; and

an irrigation segment extending through said cassette.

9. The system of claim 8 wherein said disposable cassette further includes means for allowing selective occlusion of said irrigation segment.

10. The system of claim 9 wherein said disposable cassette further includes a vent segment in liquid communication with said pumping segment.

11. The system of claim 10 wherein said disposable cassette further includes means for allowing selective occlusion of said vent segment.

12. The system of claim 11 wherein said disposable cassette further includes a suction measuring port in fluid communication with said pumping segment.

13. The system of claim 12 wherein said opening in said exterior wall, said means for selective occlusion of said irrigation segment, said means for selective occlusion of said vent segment, and said suction measuring port lie within the same plane of said disposable cassette.

14. The system of claim 13 wherein said means for selective occlusion of said irrigation segment, said means for selective occlusion of said vent segment, and said suction measuring port are located on the same outer wall of said disposable cassette.

15. The system of claim 14 wherein said mounting means comprises first and second tabs located at opposite corners of one outer wall of said cassette.

16. A microsurgical irrigation/aspiration system comprising a disposable cassette having:

an exterior wall;

an opening defined by a portion of said exterior wall for engaging a pumping means, said pumping means capable of performing either peristaltic or vacuum pumping;

a pumping segment located in said opening and suitable for engagement with said pumping means for the performance of said pumping;

mounting means located on a side of said cassette for engaging bracket means for mounting said cassette on a pumping means console;

an irrigation segment extending through said cassette;

wherein said disposable cassette opening engages and surrounds said pumping means; and

pumping means comprising a roller head for peristaltic pumping, said pumping segment opposite said opening in said exterior wall.

17. The system of claim 16, wherein said disposable cassette further includes means for allowing selective occlusion of said irrigation segment.

18. The system of claim 17, wherein said disposable cassette further includes a vent segment in fluid communication with said pumping segment.

19. The irrigation/aspiration system of claim 18, wherein said disposable cassette further includes means for allowing selective occlusion of said vent segment.

20. The system of claim 19, wherein said disposable cassette further includes a suction measuring port in fluid communication with said pumping segment.

21. The system of claim 20 including a sensor containing a plunger for engaging said suction measuring port in order to latch said cassette to said console.

22. The system of claim 20 wherein said opening in said exterior wall, said means for selective occlusion of said irrigation segment, said means for selective occlusion of said vent segment, and said suction measuring port lie within the same plane of said disposable cassette.

23. The system of claim 22 wherein said means for selective occlusion of said irrigation segment, said means for occlusion of said vent segment, and said suction measuring port are located on the same outer wall of said disposable cassette.

24. The system of claim 23, wherein said mounting means comprises first and second tabs located at opposite corners of one outer wall of said cassette.

25. A microsurgical irrigation/aspiration system comprising:

a disposable cassette having a body with t2o apertures and having a height and a width and exhibiting a thickness defining four walls and exhibiting major dimensions of an outer surface located in a plane defined by the height and width of said cassette body, an opening in said body for engaging and surrounding a pumping means, said pumping means capable of performing either peristaltic or vacuum pumping, a pumping segment extending through at least a portion of said opening for engagement with said pumping means, an irrigation segment extending through said cassette with an occludable portion of said irrigation segment opposite a first aperture in said cassette body, and a suction measuring line in fluid communication with said pumping segment and passing through a second aperture in said cassette body.

28. The system of claim 25 wherein said body opening engages a roller head capable of performing peristaltic pumping, said pumping segment opposes a wall on said cassette containing said opening and is compressed by roller head when said roller head are engaged with said cassette;

and roller head capable of performing peristaltic pumping.

29. The system of claim 28 wherein said disposable cassette further includes a third aperture in said outer surface and a vent segment in fluid communication with said pumping segment, said vent segment selectively occludable through said third aperture.

30. The system of claim 29 further including a console containing said roller heads and latch means, and said cassette containing a suction sensing port engageable with said latch means in order to latch said pumping means to said cassette.

31. The system of claim 29 wherein said first, second and third apertures in said disposable cassette are located on the same wall of said cassette body.

26. A microsurgical irrigation/aspiration system comprising:

a disposable cassette having a body with two apertures and having a height and a width and exhibiting a thickness defining four walls, and exhibiting major dimensions of an outer surface located in a plane defined by the height and width of said cassette body, an opening in said body for engaging a pumping means, said pumping means capable of performing either vacuum or peristaltic pumping, a pumping segment extending through at least a portion of said opening for engagement with said pumping means, an irrigation segment extending through said cassette with a portion of said irrigation segment opposite a first aperture in said cassette body, and a suction measuring line in fluid communication with said pumping segment and passing through a second aperture in said cassette body, and a third aperture and a vent segment in fluid communication with said pumping segment, said vent segment selectively occludable through said third aperture in said cassette body.

27. The system of claim 26 wherein said first, second and third apertures in said disposable cassette are located on the same wall of said cassette body.