Medication infusion pump
First Claim
1. An integral one-piece check valve for use with a cooperating valve surface, said check valve comprising:
- a generally disk shaped base;
an annular valve seat on one side of said base;
a plurality of spring fingers that extend radially from a central hub disposed on the other side of said base; and
a plurality of axially extending stop members disposed on said other side of said base, said stop members extending axially between adjacent ones of said radially extending spring fingers.
6 Assignments
0 Petitions
Accused Products
Abstract
An extracorporeal medication infusion device provides a precise infusion rate of a liquid medication into a human or animal body. The infusion device includes a permanent portion which has a case, a battery, a programmable electronic controller, and an electromagnetic solenoid core and solenoid coil for providing an actuation force. The infusion device also includes a disposable portion which includes a reservoir filled with a liquid medication that is to be dispensed and a pump for pumping the medication from the reservoir into the user'"'"'s body. The pump includes a pump chamber and a piston connected to an electromagnetic armature for altering the volume of the pump chamber in response to the actuation force.
13 Citations
2 Claims
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1. An integral one-piece check valve for use with a cooperating valve surface, said check valve comprising:
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a generally disk shaped base; an annular valve seat on one side of said base; a plurality of spring fingers that extend radially from a central hub disposed on the other side of said base; and a plurality of axially extending stop members disposed on said other side of said base, said stop members extending axially between adjacent ones of said radially extending spring fingers.
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2. An integral one-piece check valve comprising:
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an annular valve surface facing in one direction; a plurality of spring fingers that extend radially from a central hub; and a plurality of stop members extending axially in a direction opposite said one direction between adjacent ones of said radially extending spring fingers.
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Specification