# US 2013/0158573 A1 · Ophthalmic surgery instrument

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- Number: US 2013/0158573 A1
- Document ID: US20130158573A1
- Status: Published application
- Kind: A1
- Application number: 13/336,649
- Filed: 2011-12-23
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: Moria SA
- Inventors: Elias ZAIDMAN; David FRILEUX
- Web page: https://patentgrep.com/patent/US20130158573A1

## CPC

- A61F 9/00754: {for cutting or perforating the anterior lens capsule, e.g. capsulotomes}
- 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)

## Abstract

The invention relates to an ophthalmic surgery instrument (1; 101) for making a substantially circular cut in an internal part (110) of an eye (109), in particular for capsulorhexis, comprising a handle (2; 102) at the end of which there extends a rod (3; 103) carrying a blade (4; 104) designed to be introduced into the eye (109) via an incision (107) that has been formed in the latter, characterized in that the blade (4; 104) has a loop shape with dimensions substantially equal to those of the cut, and the instrument comprises means for passing the blade through the incision.

## Claims

### Claim 1

Ophthalmic surgery instrument (1; 101) for making a substantially circular cut in an internal part (110) of an eye (109), in particular for capsulorhexis, comprising a handle (2; 102) at the end of which there extends a rod (3; 103) carrying a blade (4; 104) designed to be introduced into the eye (109) via an incision (107) that has been formed beforehand in the latter, characterized in that the blade (4; 104) has a loop shape with dimensions substantially equal to those of the cut, and the instrument comprises means for passing the blade through the incision in successive linear sections.

### Claim 2 (depends on 1)

Instrument (1; 101) according to claim 1, in which the blade (104) extends helically in order to form an open loop allowing the blade to pass through the incision in a helical movement.

### Claim 3 (depends on 2)

Instrument (101) according to claim 2, in which the blade (104) is made of ceramic.

### Claim 4 (depends on 2)

Instrument (101) according to claim 2, in which the blade (104) is made of metal.

### Claim 5 (depends on 1)

Instrument (1) according to claim 1, in which the blade (4) is deformable between a state of use, in which the blade has the loop shape, and a state of non-use, in which the blade is at least partially straightened out, and the blade is mounted on the rod (3) in order to be movable between an insertion position, in which the blade in its state of non-use is at least partially retracted inside the rod, and a cutting position, in which the blade in its state of use extends out of the rod.

### Claim 6 (depends on 5)

Instrument (1) according to claim 5, in which the deployment and the retraction of the loop are activated by a control (6) arranged in the handle (2).

### Claim 7 (depends on 6)

Instrument (1) according to claim 6, in which the blade (4) is made of a shape-memory material.

### Claim 8 (depends on 6)

Instrument (1) according to claim 6, in which the blade (4) is made of a superelastic material.

### Claim 9 (depends on 1)

Instrument (1; 101) according to claim 1, in which the blade (4; 104) comprises a sharp lower edge (104b) along its entire length.

### Claim 10 (depends on 1)

Instrument (1; 101) according to claim 1, in which the blade (4; 104) is set in vibration by a vibratory device connected to the handle (2; 102).

### Claim 11 (depends on 1)

Instrument (1; 101) according to claim 1, in which the blade (4; 104) comprises a heating part.