Infusion device with piston pump

• US 8,114,064 B2
• Filed: 02/12/2007
• Issued: 02/14/2012
• Est. Priority Date: 03/16/2006
• Status: Active Grant

• Current Assignee: Calibra Medical, Inc. (CeQur SA)
• Original Assignee: Calibra Medical, Inc. (CeQur SA)
• Inventors: Alferness, Clifton A., Adams, John M., Hawkins, Daniel
• Primary Examiner(s): Lucchesi, Nicholas D
• Assistant Examiner(s): HOLLOWAY, IAN KNOBEL
• Application Number:
  US11/705,812
• Publication Number:
  US 20070299401A1
• Time in Patent Office: 1,828 Days
• Field of Search: 604/891.1, 604/143, 604/151
• US Class Current: 604/890.1
• CPC Class Codes: A61M 2005/1405 Patient controlled analgesia [PCA]
• CPC Class Codes: A61M 2005/1426 with means for preventing access to the needle after use
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 2025/0266 using pads, patches, tapes or the like
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/14526 the piston being actuated by fluid pressure
• CPC Class Codes: A61M 5/1454 spring-actuated, e.g. by a clockwork
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28

Abstract

A disposable infusion device comprises a base, a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient, and a source arranged to provide the cannula with a liquid medicament. The source comprises a piston pump.

Claims

1. A disposable infusion device comprising:

a base arranged to adhere to a patient'"'"'s skin;

a cannula arranged to extend through the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient;

a source arranged to provide the cannula with a liquid medicament, the source including a fixed volume piston pump including a piston and a piston chamber arranged to provide, with each actuation of the piston, the fixed volume of medicament from the piston chamber to the cannula; and

an actuator directly connected to the piston of the piston pump and being manually displaceable to in turn directly displace the piston into the piston chamber of the piston pump to deliver the fixed volume of medicament from the piston chamber to the cannula.