Microsurgical system cassette assembly

• US 4,627,833 A
• Filed: 06/04/1984
• Issued: 12/09/1986
• Est. Priority Date: 06/01/1982
• Status: Expired

• Current Assignee: Chiron Vision Corp. (Bayer AG)
• Original Assignee: Site Microsurgical Systems, Inc.
• Inventors: Cook, Kenneth P.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): KRUTER, JEROME
• Application Number:
  US06/616,633
• Time in Patent Office: 918 Days
• Field of Search: 433/91, 433/95, 128/200.14, 128/200.22, 604/22, 604/48, 604/246-250, 604/DIG. 12, 604/DIG. 13, 604/30-35
• US Class Current: 604/34
• CPC Class Codes: A61B 2017/00977 the depression depth determining the power rate
• 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 1/77 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

Abstract

A cassette assembly for a microsurgical system. The cassette comprises a body portion, a collection vessel and a suction conduit which may be occluded to interrupt suction. The cassette may also include an occludable infusion conduit for providing infusion through the cassette to a surgical site.

Claims

1. A cassette assembly adapted for releasable securement to a control console for use in ophthalmic surgery comprising:

a housing having at least one rigid surface and having an externally accessible suction port;

a first port internal to said housing in fluid communication with said suction port;

a second port internal to said housing and means through which fluid may flow to a source of vacuum in a control console;

a first occludable tubular conduit means disposed in said housing and coupled between said first and second ports and providing fluid communication therebetween;

at least a portion of said occludable tubular conduit means aligned with said housing rigid surface;

a collection vessel supported by said housing and having a first port for providing fluid communication between a source of vacuum and said collection vessel and having a second port in fluid communication with said first occludable tubular conduit means.

2. The cassette of claim 1 wherein said occludable tubular conduit means includes a piece a flexible rubber tubular conduit having an occludable portion disposed along said rigid surface of said housing.

3. The apparatus of claim 2 wherein said housing includes an upper portion and a lower portion;

wherein said occludable tubular conduit means is disposed in said lower portion and said lower portion includes an opening therein to expose an occludable portion of said occludable tubular conduit means.

4. The cassette assembly of claim 2 wherein said housing includes a body portion and a collection vessel removably mounted on said body portion.

5. A cassette assembly adapted for releasable securement to a control console for use in ophthalmic surgery comprising:

a housing;

an externally accessible fluid access port means on said housing for providing fluid communication between a surgical situs and the housing;

a first port in fluid communication with said fluid access port means disposed interior to said housing;

a second port means interior to said housing and through which fluid may flow;

a flexible first occludable tubular conduit means coupled between said first and second interior port means and providing fluid communication therebetween, a portion of said first occludable tubular conduit means facing a backstop means;

backstop means aligned with at least a portion of said first occludable tubular conduit means to provide a support against which said first occludable tubular conduit means may be compressed to shut off fluid communication between said first and second interior ports when cooperating with an interrupting occluding means on a control console;

a collection vessel supported by said housing and having a first port for providing fluid communication between a source of vacuum and said collection vessel and having a second port in fluid communication with said first occludable tubular conduit means.

6. The cassette assembly of claim 5 further including a check valve in fluid communication with said fluid access port means and said first port.

7. A cassette assembly adapted for releasable securement to a control console for use in ophthalmic surgery comprising:

a housing;

an externally accessible fluid access port means on said housing for providing fluid communication between a surgical situs and the housing;

a first port in fluid communication with said fluid access port means disposed interior to said housing;

a second port means interior to said housing and through which fluid may flow;

a flexible first occludable tubular conduit means coupled between said first and second interior port means and providing fluid communication therebetween, a portion of said first occludable tubular conduit means facing a backstop means;

backstop means aligned with at least a portion of said first occludable tubular conduit means to provide a support against which said first occludable tubular conduit means may be compressed to shut off fluid communication between said first and second interior ports when cooperating with an interrupting occluding means on a control console;

said housing including a body portion and a collection vessel removably mounted to said body portion.

8. The cassette assembly of claim 7 further including a vent providing fluid communication to said collection vessel through said housing.

9. The cassette assembly of claim 7 further including a filter disposed in said vent passage.

10. A cassette assembly adapted for releasable securement to a control console for use in ophthalmic surgery comprising:

a housing having an externally accessible suction port;

a first port internal to said housing and in fluid communication with said suction port;

a second port internal to said housing and means through which fluid may flow to a source of vacuum in a control console;

a piece of flexible rubber tubular conduit disposed in said housing and coupled between said first and second ports and providing fluid communication therebetween, said flexible rubber tubular conduit having an occludable portion disposed along a rigid surface of said housing against which said flexible rubber tubular conduit may be compressed to shut off fluid communication between said first and second ports when cooperating with an interrupting occluding means on a control console;

said housing including an upper portion and a lower portion;

wherein said flexible rubber tubular conduit is disposed in said lower portion and said lower portion includes an opening therein to expose an occludable portion of said flexible rubber tubular conduit in response to a signal; and

,

a selectably occludable vent means in fluid communication with said first port and adapted for venting said first port to the atmosphere in response to a signal;

said vent means disposed in said upper housing portion, containing said suction port.

11. A cassette assembly adapted for releasable securement to a control console for use in ophthalmic surgery comprising:

a housing;

an externally accessible fluid access port on said housing for providing fluid communication between a surgical situs and the housing;

a first port in fluid communication with said fluid access port means disposed interior to said housing;

a second port means interior to said housing and through which fluid may flow;

a flexible first occludable tubular conduit means coupled between said first and second interior port means and providing fluid communication therebetween, a portion of said first occludable tubular conduit means facing a backstop means;

backstop means aligned with said portion of said first occludable tubular conduit means to provide a support against which said first occludable tubular conduit means may be compressed to shut off fluid communication between said first and second interior ports when cooperating with an interrrupting occluding means on a control console;

a check valve in fluid communication with said fluid access port means and said first port; and

,

said housing including a body portion and a collection vessel removably mounted to said body portion.