Injection pump calibration device

• US 5,140,862 A
• Filed: 02/06/1991
• Issued: 08/25/1992
• Est. Priority Date: 02/06/1991
• Status: Expired due to Fees

• Current Assignee: Joseph T. Pappalardo
• Original Assignee: Joseph T. Pappalardo
• Inventors: Pappalardo, Joseph T.
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): Lynch, Michael
• Application Number:
  US07/651,310
• Time in Patent Office: 566 Days
• Field of Search: 604/118, 604/154, 604/155, 604/151, 604/152, 73/3, 73/866.4
• US Class Current: 73/866.4
• CPC Class Codes: A61M 2205/70 with testing or calibration facilities
• CPC Class Codes: A61M 2209/02 Equipment for testing the apparatus
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: G01F 25/0092 for metering by volume
• CPC Class Codes: G01F 25/11 using a seal ball or piston in a test loop

Abstract

An injection pump calibration device insertable in place of an actual syringe in an infusion syringe pump is described. The housing is shaped like a syringe body and configured to detachably mount in place of an actual syringe in an infusion syringe pump. A plunge is affixed to the housing and is moveable between a first position away from the housing and a second position adjacent the housing.

A position detector is adapted to the plunger to measure movement of the plunger between the first position away from the housing and the second position adjacent the housing to calibrate or verify parameters of the infusion syringe pump.

Claims

1. A injection pump calibration device insertable in place of an actual syringe in an infusion syringe pump comprising:

(a) housing means defining a syringe body wherein said housing means is configured to detachably mount in place of said actual syringe in said infusion syringe pump;

(b) plunger means affixed to said housing means moveable between a first position away from said housing means and a second position substantially adjacent said housing means;

(c) position detecting means adapting to said plunger means to measure movement of said plunger means between said first position away from said housing means and said second substantially adjacent said housing means to calibrate or verify various parameters of said infusion syringe pump;

2. An injection pump calibration device as in claim 1 wherein said position detecting means is a transducer assembly means.

3. The injection pump calibration device of claim 1 further including:

a) support means annularly disposed about said transducer assembly means positioned to retain said transducer assembly means in place;

b) spring means positioned between and end of said housing means on one end thereof and adjacent said plunger means on the other end thereof and arranged to put normal pressure on a down-stroke of said plunger means.

4. An injection pump calibration device insertable in place of an actual syringe in an infusion syringe pump comprising:

a) housing means defining a syringe body wherein said housing is configured to detachably mount in place of said actual syringe in said infusion syringe pump;

b) plunger means affixed to said housing moveable between a first position away from said housing means and a second position substantially adjacent said housing means;

c) transducer assembly means adapting to said plunger means to measure movement of said plunger means between said first position away from said housing means and said second position substantially adjacent said housing to calibrate or verify various parameters of said infusion syringe pump;

d) support means annularly disposed about said transducer assembly means positioned to retain said transducer assembly means in place;

e) spring means positioned between an end of said housing means on one end thereof and adjacent said plunger means on the other end thereof and arranged to put normal pressure on a down-stroke of said plunger means.