# US 10,441,959 B2 · Multi-orifice spray head

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- Number: US 10,441,959 B2
- Document ID: US10441959B2
- Status: Granted
- Kind: B2
- Application number: 13/284,421
- Filed: 2011-10-28
- Published: 2013-05-02
- Granted: 2019-10-15
- Earliest claimed: 2011-10-28
- Assignees: Medtronic Xomed, Inc.
- Applicants: Ethan G. Sherman; David J. Little; Wei Chen; John R. Prisco; Matthew J. Friend; Matthew F. Myntti; Tom Zelmer; Cyan Godfrey; Roy Attride
- Inventors: Ethan G. Sherman; David J. Little; Wei Chen; John R. Prisco; Matthew J. Friend; Matthew F. Myntti; Tom Zelmer; Cyan Godfrey; Roy Attride
- Web page: https://patentgrep.com/patent/US10441959B2

## CPC

- B05B 1/14: with multiple outlet openings (B05B1/02, B05B1/26 take precedence); with strainers in or outside the outlet opening
- A61M 11/007: {Syringe-type or piston-type sprayers or atomisers}
- A61M 11/08: Pocket atomisers of the injector type {(aerosol cans A61M15/009)}
- B05B 1/1421: {the multiple outlet openings arranged in plural groups or rows (for roses or shower heads B05B1/1821)}
- B05B 1/1423: {comprising concentric or coaxial groups}
- B05B 11/0078: {Arrangements for separately storing several components (arrangements for pumping several liquids or other fluent materials from several containers B05B11/1081)}
- B05B 11/02: Membranes or pistons acting on the contents inside the container, e.g. follower pistons
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- 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

A spray head having multiple openings arranged to provide at spray coverage throughout at least 90 degrees from the spray head central axis. The spray head may be used for applying tissue sealants.

## Claims

### Claim 1

A method of dispensing fluids to a target body cavity site in a sinus cavity, the method comprising:
inserting into the sinus cavity a spray head comprising at least a fluid inlet and a plurality of fluid outlet openings configured to provide at least a hemispherical spray coverage pattern, wherein the spray head has a length of about 5.0 to 20 mm, is connected to a flexible multi-lumen cannula, and defines a mixing space or region where fluids exiting lumens of the flexible multi-lumen cannula mix before exiting the spray head, and
spraying the fluids through the spray head, including supplying pressurized air through a gas lumen in the flexible multi-lumen cannula, and wherein the pressurized air mixes with the fluids in the mixing space or region in the spray head to assist in spraying the fluids;
withdrawing the spray head from the sinus cavity with the flexible multi-lumen cannula extending out of the target body cavity site attached to the spray head.

### Claim 2 (depends on 1)

The method of claim 1 comprising spraying a tissue sealant.

### Claim 3 (depends on 1)

The method of claim 1 comprising spraying a mixture of chitosan and starch.

### Claim 4 (depends on 1)

The method of claim 1 wherein the spray head provides a suprahemispherical spray coverage pattern.

### Claim 5 (depends on 1)

The method of claim 1 wherein the spray head provides a spray coverage pattern extending over at least about a 90 degree arc on either side of a central axis.

### Claim 6 (depends on 1)

The method of claim 1 wherein the spray head has 20 to 30 fluid outlet openings.

### Claim 7 (depends on 1)

The method of claim 1 wherein the spray head is made of stainless steel.

### Claim 8 (depends on 1)

The method of claim 1 wherein the spray head has an outer diameter of about 0.5 to about 10 mm.

### Claim 9 (depends on 1)

The method of claim 1 wherein the spray head has a wall thickness of about 0.01 to about 1.0 mm.

### Claim 10 (depends on 1)

The method of claim 1 wherein the plurality of fluid outlet openings are arranged at angles of 30 to 90 degrees with respect to a central axis.

### Claim 11 (depends on 1)

The method of claim 1 wherein the plurality of fluid outlet openings are separated by distances of about 0.025 to 0.075 cm.

### Claim 12 (depends on 1)

The method of claim 1 wherein the spray head can be inserted into and withdrawn from the sinus cavity.