# US 10,765,555 B2 · Ophthalmic surgical fluid handling cassette

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- Number: US 10,765,555 B2
- Document ID: US10765555B2
- Status: Granted
- Kind: B2
- Application number: 15/957,375
- Filed: 2018-04-19
- Published: 2018-08-23
- Granted: 2020-09-08
- Earliest claimed: 2012-06-26
- Assignees: Synergetics, Inc.
- Applicants: Synergetics, Inc.
- Inventors: James Easley; John Boswell
- Web page: https://patentgrep.com/patent/US10765555B2

## CPC

- A61M 1/60: {Containers for suction drainage, adapted to be used with an external suction source (containers not adapted for subjection to vacuum A61M1/69)}
- A61F 9/007: Methods or devices for eye surgery
- A61M 1/72: {Cassettes forming partially or totally the fluid circuit}
- 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)}
- A61M 3/0201: {Cassettes therefor}
- A61B 2217/005: with suction drainage system
- A61F 9/00736: {Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments (A61F9/008 takes precedence)}
- A61M 2205/128: with incorporated valves
- A61M 2205/3389: Continuous level detection (A61M2205/3393 takes precedence)
- A61M 2210/0612: Eyes
- F04C 2270/041: Controlled or regulated
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS

## Abstract

An ophthalmic system (100) having an ophthalmic cassette (104) for operative engagement with an ophthalmic apparatus (102) is disclosed. The ophthalmic cassette (104) includes a cassette body (108) having a manifold (124) defining an inlet port (180) in fluid flow communication with first and second fluid pathways (120/122) which are in selective fluid flow communication with respective first and second storage chambers (116/118) such that fluid enters either the first storage chamber (116) or the second storage chamber (118). The ophthalmic apparatus (102) is operable to permit alternate fluid flow communication between the inlet port (108) and either the first storage chamber (116) or the second storage chamber (118) during operation of the ophthalmic system (100).

## Claims

### Claim 1

An ophthalmic apparatus comprising: a housing defining a cassette receptacle; a sensor arrangement in operative communication with the cassette receptacle; and a cassette configured to operatively engage the cassette receptacle for establishing operative communication between the cassette and the sensor arrangement, the cassette comprising: a cassette body configured to engage the cassette receptacle, wherein the cassette body defines a storage receptacle; a manifold defining an inlet port in fluid flow communication with a fluid pathway; and a storage chamber in selective fluid flow communication with the fluid pathway when the storage chamber is engaged to the storage receptacle of the cassette body; wherein the sensor arrangement is operatively associated with the cassette engaged to the cassette receptacle for transmitting a detection signal to detect: a first state wherein the storage chamber is detached from the storage receptacle, a second state wherein the storage chamber is attached to the storage receptacle and the sensor arrangement detects only air in the storage chamber, and a third state wherein a liquid fills the storage chamber attached to the storage receptacle above a predetermined level.

### Claim 2 (depends on 1)

The ophthalmic apparatus of claim 1, further comprising: a valve member, the valve member being in communication with the fluid pathway for preventing or permitting fluid flow through the fluid pathway.

### Claim 3 (depends on 2)

The ophthalmic apparatus of claim 2, wherein the valve member is in a closed position for preventing fluid flow through the fluid pathway when a storage chamber is detached from the storage receptacle.

### Claim 4 (depends on 1)

The ophthalmic apparatus of claim 1, wherein the sensor arrangement includes at least one optical transmitter for transmitting a plurality of optical detection beams and a respective at least one optical receiver for detecting the plurality of transmitted optical detection beams.

### Claim 5 (depends on 1)

The ophthalmic apparatus of claim 1, wherein the storage chamber is a detachable vial configured to be engaged and disengaged to the storage receptacle for establishing selective fluid flow communication with the fluid pathway.

### Claim 6 (depends on 1)

The ophthalmic apparatus of claim 1, wherein a portion of the storage chamber which interfaces with the sensor arrangement is configured to be transparent to the detection signal.

### Claim 7 (depends on 6)

The ophthalmic apparatus of claim 6, wherein engagement of the cassette body to the cassette receptacle allows the sensor arrangement to detect fluid in the storage chamber.