Two Piece Housing For Drug Loading

• US 20100160870A1
• Filed: 12/14/2009
• Published: 06/24/2010
• Est. Priority Date: 12/18/2008
• Status: Abandoned Application

• Current Assignee: Alcon Research Limited (Nestle SA)
• Original Assignee: Alcon Research Limited (Nestle SA)
• Inventors: Dupre, Michell R., Piazza, Michael J., Vanderlaan, Roger, Sethi, Pardeep K., DuPriest, Mark T., Clements, Don A., Clifford, Julie A.
• Application Number:
  US12/636,857
• Publication Number:
  US 20100160870A1
• Time in Patent Office: Days
• 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 2005/3123 having air entrapping or venting means, e.g. purging channels in pistons
• CPC Class Codes: A61M 2210/0612 Eyes
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003
• CPC Class Codes: A61M 5/445 the media being heated in the reservoir, e.g. warming bloodbags

Abstract

A drug loading apparatus has a dispensing chamber housing formed by a top housing part and a bottom housing part. The top housing part is separable from the bottom housing part. A plunger is located in the bottom housing part such that the plunger forms a first fluid seal with an inner wall of the bottom housing part. When the top housing part is coupled to the bottom housing part, a second fluid seal is formed.

Claims

1. An apparatus comprising:

a dispensing chamber housing formed by a top housing part and a bottom housing part, the top housing part separable from the bottom housing part; and

a plunger located in the bottom housing part such that the plunger forms a first fluid seal with an inner wall of the bottom housing part;

wherein when the top housing part is coupled to the bottom housing part, a second fluid seal is formed.

2. The apparatus of claim 1 further comprising:

a drug loading apparatus configured to inject a mixture into the bottom housing part on top of the plunger.

3. The apparatus of claim 2 wherein the drug loading apparatus is heated.

4. The apparatus of claim 1 further comprising:

a temperature control device at least partially surrounding the bottom housing part.

5. The apparatus of claim 1 wherein the top housing part is coupled to the bottom housing part via a press fit connection.

6. A method of loading an injection device comprising:

placing a plunger in a bottom housing part of a dispensing chamber housing to form a dispensing chamber bounded by a top face of the plunger and an inner wall of the bottom housing part;

dispensing a substance into the dispensing chamber; and

sealing a top housing part to the bottom housing part.

7. The method of claim 6 further comprising:

heating the substance.

8. The method of claim 12 further comprising:

heating the bottom housing part.