Drug casting

• US 7,887,517 B2
• Filed: 08/03/2007
• Issued: 02/15/2011
• Est. Priority Date: 05/17/2006
• Status: Expired due to Fees

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon Research Limited (Nestle SA)
• Inventors: Santos, Cesario Dos, Lind, Casey, Sanchez, Robert, Pinedjian, Raffi, Dacquay, Bruno
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): Hall; Deanna K
• Application Number:
  US11/833,668
• Publication Number:
  US 20080021413A1
• Time in Patent Office: 1,292 Days
• Field of Search: 604/60, 604/218, 264/478, 264/636, 264/212
• US Class Current: 604/218
• CPC Class Codes: A61F 9/0017 implantable in, or in contact with, the eye, e.g. ocular inserts
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2205/8262 connectable to external power source, e.g. connecting to automobile battery through the cigarette lighter
• CPC Class Codes: A61M 2210/0612 Eyes
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/14546 Front-loading type injectors
• CPC Class Codes: A61M 5/31511 Piston or piston-rod constructions, e.g. connection of piston with piston-rod A61M5/5066 takes precedence
• CPC Class Codes: A61M 5/484 Regulating injection pressure

Abstract

An injection device assembly includes a dispensing chamber housing and a plunger. The dispensing chamber housing is coupled to a needle. The dispensing chamber housing has an inner surface and an outer surface. The inner surface partially defines a dispensing chamber for holding a quantity of a substance. A dosage of a substance is cast into the dispensing chamber housing or cast onto a plunger that is inserted into the dispensing chamber housing.

Claims

1. A dosing assembly comprising:

a plunger having a top and bottom surface;

a removable, hinged sleeve having an interior and exterior surface, the sleeve fitting over the top surface of the plunger, the interior surface forming a mold into which a substance is cast onto the top surface of the plunger; and

the cast substance located on the top surface of the plunger.

2. The dosing assembly of claim 1 wherein the top surface of the plunger is in the form of a shape suitable for receiving the cast substance.

3. The dosing assembly of claim 1 wherein the top surface of the plunger has a texture.

4. The dosing assembly of claim 1 wherein the interior surface of the sleeve is coated.