# US 12,005,178 B2 · Surgical assembly for ocular surgery and method of compensation of intraocular pressure

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- Number: US 12,005,178 B2
- Document ID: US12005178B2
- Status: Granted
- Kind: B2
- Application number: 17/079,218
- Filed: 2020-10-23
- Published: 2021-02-11
- Granted: 2024-06-11
- Earliest claimed: 2015-03-03
- Assignees: Electronic Systems S.P.A.
- Applicants: Electronic Systems S.P.A.
- Inventors: Roberto Citterio; Antonio Farago′; Guido Santus
- Web page: https://patentgrep.com/patent/US12005178B2

## CPC

- 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)}
- A61B 3/16: for measuring intraocular pressure, e.g. tonometers
- A61B 90/30: Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61F 9/007: Methods or devices for eye surgery
- A61F 9/00781: {Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment (drainage implants in general A61M27/002)}
- A61M 1/777: {Determination of loss or gain of body fluids due to suction-irrigation, e.g. during surgery}
- A61M 1/85: {with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants (for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208)}
- A61M 3/0216: {Pressure}
- A61B 3/0008: {provided with illuminating means (A61B3/117, A61B3/14 take precedence)}
- A61B 17/34: Trocars; Puncturing needles
- A61B 2090/033: {Abutting means, stops, e.g. abutting on tissue or skin}
- A61B 2090/036: {abutting on tissue or skin}
- A61B 2090/064: {for measuring force, pressure or mechanical tension}
- A61M 2205/3344: Measuring or controlling pressure at the body treatment site
- A61M 2205/587: Lighting arrangements
- A61M 2210/0612: Eyes
- 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)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- 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

A surgical assembly for ocular surgery includes a direct measuring device of intraocular pressure, a surgical accessory utilisable in conjunction with a surgical instrument suitable for performing eye surgery, and the surgical accessory being insertable in an ocular cavity through an accessory ocular incision. The direct measuring device of intraocular pressure is coupled to the surgical accessory so as to be insertable in the ocular cavity along with the surgical accessory through the accessory ocular incision.

## Claims

### Claim 1

A surgical assembly for ocular surgery comprising: a direct measuring device of intraocular pressure, a surgical accessory utilizable in conjunction with a surgical instrument suitable for performing eye surgery, the surgical accessory being insertable in an ocular cavity through an accessory ocular incision, wherein the direct measuring device of intraocular pressure is coupled to the surgical accessory so as to be insertable in the ocular cavity along with the surgical accessory through the accessory ocular incision; wherein the direct measuring device comprises a fiber optic pressure transducer; wherein the fiber optic pressure transducer extends inside an infusion cannula, and wherein the fiber optic pressure transducer and the infusion cannula are connected to each other by a three-way solenoid valve, the three-way solenoid valve having a first way being fluidically connected to the infusion cannula, a second way, aligned with the first way, being connected to a fiber optic pressure transducer with axial locking of the fiber optic pressure transducer, and a third way being fluidically connected to an output line of a fluid infusion pump.

### Claim 2 (depends on 1)

The assembly of claim 1, wherein the surgical accessory is the infusion cannula of an infusion system, suitable for injecting an irrigation fluid for a compensation of intraocular pressure.

### Claim 3 (depends on 1)

The assembly of claim 1, wherein the fiber optic pressure transducer, an optical fiber and an endo-illuminator are coupled to one another by an attachment guide ring in which the fiber optic pressure transducer, the optical fiber and the endo-illuminator are inserted with interference, the attachment guide ring being suitable for abutting with a flange of a positioning cannula positioned in an eyeball so as to determine an insertion depth of the fiber optic pressure transducer and the endo-illuminator in the eyeball.

### Claim 4 (depends on 1)

The assembly of claim 1, wherein the fiber optic pressure transducer is inserted with interference in an attachment guide ring suitable for cooperating with the infusion cannula so as to determine a position of a distal end of the fiber optic pressure transducer relative to a distal end of the infusion cannula.

### Claim 5 (depends on 1)

The assembly of claim 1, wherein the infusion cannula comprises a distal portion suitable for being inserted in an eyeball and a cylindrical proximal portion suitable for abutting with a flange of a positioning cannula positioned in the eyeball and suitable for receiving the distal portion of the infusion cannula with the fiber optic pressure transducer inserted.

### Claim 6 (depends on 1)

The assembly of claim 1, wherein the fiber optic pressure transducer is inserted with interference in an attachment guide ring suitable for cooperating with the third way of the three-way valve so as to determine a position of a distal end of the pressure transducer relative to a distal end of the infusion cannula.

### Claim 7 (depends on 1)

The assembly of claim 1, wherein the surgical accessory is an endo-illuminator device for illuminating a field of surgery.

### Claim 8 (depends on 7)

The assembly of claim 7, wherein the endo-illuminator comprises an optical fiber or a chandelier probe.