Dispensing tip

• US 20050274744A1
• Filed: 06/10/2004
• Published: 12/15/2005
• Est. Priority Date: 06/10/2004
• Status: Active Grant

• Current Assignee: Allergan Incorporated (Abbvie Incorporated)
• Original Assignee: Allergan Incorporated (Abbvie Incorporated)
• Inventors: Spada, Lon T., Butorac, Paul T.
• Granted Patent: US 7,063,241 B2
• Time in Patent Office: Days
• US Class Current: 222/240
• CPC Class Codes: A61F 9/0026 Ophthalmic product dispenser attachments to facilitate positioning near the eye
• CPC Class Codes: B65D 47/18 for discharging drops; Droppers droppers in general B01L3/00; pipettes connected to container closures B01L3/0282

Abstract

A dispensing tip includes a body suitable for attachment to a dispensing bottle along with a nozzle having a lumen therethrough for flow of liquid formulation and an egress orifice which is in fluid communication with the lumen for the formation of droplets. A concave arcuate surface of revolution about the egress orifice is provided and depending therefrom for enhancing droplet separation from the egress orifice which in turn insures uniform droplet formation and dispensement.

Claims

1. A dispensing tip comprising:

a body suitable for attachment to a dispensing bottle;

a nozzle having a lumen therethrough for flow of a liquid formulation and an egress orifice in fluid communication with said lumen for the formation of droplets; and

a subtending concave arcuate surface of revolution about said egress orifice and depending therefrom.

2. A dispensing tip according to claim 1 wherein said egress orifice has a diameter equal to a diameter of said lumen.

3. The dispensing tip according to claim 2 further comprising an ingress orifice in fluid communication with said lumen for controlling passage of said liquid formulation from the dispensing bottle and into said lumen.

4. The dispensing tip according to claim 3 wherein said ingress orifice has a diameter smaller than a diameter of said lumen.

5. The dispensing tip according to claim 4 wherein a ratio of the lumen diameter to the ingress orifice diameter is between about 3 and about 4.

6. The dispensing tip according to claim 5 wherein the lumen diameter is about 0.02 inches and the ingress orifice diameter is about 0.006 inches.

7. The dispensing tip according to claim 1 wherein the concave arcuate surface abuts the egress orifice.

8. The dispensing tip according to claim 7 wherein the concave arcuate surface depends from said egress orifice at an angle of about 60°

.

9. The dispensing tip according to claim 1 further comprises a closure with an inside convex depending surface for sealing said egress orifice without contact with the concave arcuate surface.

10. A dispensing tip comprising:

a body suitable for attachment to a dispensing bottle;

a nozzle having a lumen therethrough for flow of liquid formulation and an egress orifice in fluid communication with said lumen for formation of droplets;

a surface of revolution subtending and surrounding said egress orifice for enhancing droplet separation from said egress orifice.

11. The dispensing tip according to claim 10 wherein said egress orifice has a diameter equal to a diameter of said lumen.

12. The dispensing tip according to claim 11 further comprising an ingress orifice in fluid communication with said lumen for controlling passage of said liquid formulation from the dispensing bottle and into said lumen.

13. The dispensing tip according to claim 12 wherein said ingress orifice has a diameter smaller than a diameter of said lumen.

14. The dispensing tip according to claim 13 wherein a ratio of the lumen diameter to the ingress orifice diameter is between about 3 and about 4.

15. The dispensing tip according to claim 14 wherein the lumen diameter is about 0.02 inches and the ingress orifice diameter is about 0.006 inches.

16. The dispensing tip according to claim 10 wherein the surface of revolution abuts the egress orifice.

17. The dispensing tip according to claim 16 wherein the surface of revolution depends from said egress orifice at an angle of about 60°

.

18. The dispensing tip according to claim 17 wherein the surface of revolution is arcuate and depends from said egress orifice.

19. The dispensing tip according to claim 18 further comprising a closure with an inside convex depending surface for sealing said egress orifice without contact with the concave arcuate surface.