Medical Device Mechanical Pump

• US 20100081993A1
• Filed: 09/30/2009
• Published: 04/01/2010
• Est. Priority Date: 09/30/2008
• Status: Abandoned Application

• Current Assignee: Animas Corporation (Johnson & Johnson)
• Original Assignee: Animas Corporation (Johnson & Johnson)
• Inventors: O'Connor, Sean
• Application Number:
  US12/569,958
• Publication Number:
  US 20100081993A1
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• CPC Class Codes: A61M 2205/071 hand operated
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 5/14224 Diaphragm type
• CPC Class Codes: A61M 5/1424 Manually operated pumps
• CPC Class Codes: A61M 5/14248 of the skin patch type

Abstract

A medical device pump with a housing with a compartment for removably receiving a cartridge containing a therapeutic agent, a conduit configured to operatively provide a fluid flow path for therapeutic agent to exit from the cartridge, a user activated delivery button, a trigger mechanism, and a mechanical pump mechanism. The trigger mechanism, user activated delivery button and mechanical pump mechanism of the medical device pump are configured such that the trigger mechanism is activated by a user fully activating the user activated delivery button. Moreover, such full activation generates mechanical power employed by, and sufficient for, the mechanical pump mechanism to pump a predetermined volume of therapeutic agent from the cartridge and through the fluid flow path.

Claims

1. A manually actuated drug infusion device, comprising:

a housing,

a reservoir,

a flexible cannula in fluid communication with the reservoir,

a safety release button,

a delivery button,

a trigger mechanism, and

a micropump,

wherein the delivery button engages a safety release rod to permit movement of the delivery button, and wherein movement of the delivery button engages the trigger mechanism for actuating the micropump.

2. The device of claim 1, wherein the micropump comprises a flexible diaphragm, a bubble trap, a pump chamber, and at least one check valve.

3. The device of claim 2 wherein the flexible diagram is configured to pressurize the pump chamber thereby closing an inlet valve and opening an outlet valve.