# US 8,784,357 B2 · Phacoemulsification hand piece with two independent transducers

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- Number: US 8,784,357 B2
- Document ID: US8784357B2
- Status: Granted
- Kind: B2
- Application number: 12/882,243
- Filed: 2010-09-15
- Published: 2012-03-15
- Granted: 2014-07-22
- Earliest claimed: 2010-09-15
- Assignees: Alcon Research, Ltd.
- Applicants: Jiansheng Zhou
- Inventors: Jiansheng Zhou
- Web page: https://patentgrep.com/patent/US8784357B2

## CPC

- A61F 9/00745: {using mechanical vibrations, e.g. ultrasonic}
- A61M 1/774: {Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently}
- 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)
- 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)}

## Abstract

An ophthalmic surgical hand piece has a horn and two transducers. The horn has a central axis. A flange having a generally flat surface is coupled to the horn. The flange extends radially from the horn and generally perpendicular to the central axis. A first ear having a generally flat surface is coupled to the horn. The first ear extends from the horn such that the generally flat surface of the first ear is generally perpendicular to the generally flat surface of the flange. A first transducer is held against the flange, and a second transducer held against the ear.

## Claims

### Claim 1

An ophthalmic surgical hand piece comprising:
a horn with a central axis;
a flange coupled to the horn, the flange having a generally flat surface, the generally flat surface of the flange extending from the horn and generally perpendicular to the central axis, the generally flat surface of the flange at least partially bounded by a surface of the horn;
a first ear coupled to the horn, the first ear having a generally flat surface, the generally flat surface of the first ear extending from the horn such that the generally flat surface of the first ear is generally perpendicular to the generally flat surface of the flange, the generally flat surface of the first ear at least partially bounded by the horn;
a first transducer held against the generally flat surface of the flange, such that a generally flat surface of the first transducer parallel to the generally flat surface of the flange is held against the generally flat surface of the flange; and
a second transducer held against the generally flat surface of the first ear, such that a generally flat surface of the second transducer parallel to the generally flat surface of the ear is held against the generally flat surface of the ear.

### Claim 2 (depends on 1)

The hand piece of claim 1 wherein the first and second transducers are capable of vibrating in a longitudinal direction, the first transducer imparts a longitudinal vibration to the horn, and the second transducer imparts a torsional or twisting vibration to the horn.

### Claim 3 (depends on 1)

The hand piece of claim 1 further comprising:
a second ear coupled to the horn, the second ear having a generally flat surface, the second ear extending from the horn such that the generally flat surface of the second ear is generally perpendicular to the generally flat surface of the flange.

### Claim 4 (depends on 3)

The hand piece of claim 3 wherein the second ear is located generally opposite the first ear on the horn.

### Claim 5 (depends on 3)

The hand piece of claim 3 further comprising:
a third transducer held against the generally flat surface of the second ear.

### Claim 6 (depends on 1)

The hand piece of claim 1 further comprising:
a needle coupled to the horn.

### Claim 7 (depends on 1)

The hand piece of claim 1 wherein driving voltages can be independently applied to the first transducer and to the second transducer.

### Claim 8 (depends on 1)

The hand piece of claim 1 wherein the flange is generally disc-shaped.

### Claim 9 (depends on 1)

The hand piece of claim 1 wherein the ear is generally rectangular in shape.

### Claim 10 (depends on 1)

The hand piece of claim 1 wherein the horn is generally cylindrical in shape.

### Claim 11 (depends on 1)

The hand piece of claim 1 wherein the horn further comprises a lumen that extends through the horn along the central axis.

### Claim 12 (depends on 1)

The hand piece of claim 1 wherein the second transducer is held against the first ear at an angle.