RESERVOIR PLUNGER HEAD SYSTEMS AND METHODS
First Claim
1. A system for transferring fluidic media, the system comprising:
- a plunger head moveable in an axial direction within a reservoir having an interior volume for containing fluidic media, the plunger head comprising;
a first portion in contact with fluidic media when fluidic media is in the interior volume of the reservoir, the first portion comprising a first material compatible with fluidic media in the interior volume of the reservoir;
a second portion located on an opposite side of the plunger head from the interior volume of the reservoir, the second portion connectable to a plunger arm; and
a third portion located between the first portion and the second portion of the plunger head;
wherein at least one of the first portion, second portion, and the third portion is made of a material that comprises one of a cyclic olefin copolymer and a cyclic olefin polymer.
1 Assignment
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Accused Products
Abstract
A plunger head moveable in an axial direction within a reservoir having an interior volume for containing fluidic media may have a first portion in contact with fluidic media when fluidic media is in the interior volume of the reservoir, the first portion comprising a first material compatible with fluidic media in the interior volume of the reservoir, a second portion located on an opposite side of the plunger head from the interior volume of the reservoir, the second portion connectable to a plunger arm, and a third portion located between the first portion and the second portion of the plunger head, at least one of the first portion, second portion, and the third portion is made of a material that comprises one of a cyclic olefin copolymer and a cyclic olefin polymer.
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Citations
19 Claims
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1. A system for transferring fluidic media, the system comprising:
a plunger head moveable in an axial direction within a reservoir having an interior volume for containing fluidic media, the plunger head comprising; a first portion in contact with fluidic media when fluidic media is in the interior volume of the reservoir, the first portion comprising a first material compatible with fluidic media in the interior volume of the reservoir; a second portion located on an opposite side of the plunger head from the interior volume of the reservoir, the second portion connectable to a plunger arm; and a third portion located between the first portion and the second portion of the plunger head; wherein at least one of the first portion, second portion, and the third portion is made of a material that comprises one of a cyclic olefin copolymer and a cyclic olefin polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of making a system for transferring fluidic media, the method comprising:
providing a plunger head moveable in an axial direction within a reservoir having an interior volume for containing fluidic media, the plunger head comprising;
a first portion in contact with fluidic media when fluidic media is in the interior volume of the reservoir, the first portion comprising a first material compatible with fluidic media in the interior volume of the reservoir;
a second portion located on an opposite side of the plunger head from the interior volume of the reservoir, the second portion connectable to a plunger arm; and
a third portion located between the first portion and the second portion of the plunger head;
wherein at least one of the first portion, second portion, and the third portion is made of a material that comprises one of a cyclic olefin copolymer and a cyclic olefin polymer.
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16. A method of making a system for transferring fluidic media, the method comprising:
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providing a reservoir having an interior volume for containing fluidic media, the reservoir having a plunger head moveable in an axial direction within the reservoir; providing a lubricant on an inner surface of the reservoir at least between the plunger head and the reservoir; plasma treating the lubricant on the inner surface of the reservoir; wherein at least a portion of the plunger head is made of a material that comprises one of a cyclic olefin copolymer and a cyclic olefin polymer. - View Dependent Claims (17, 18, 19)
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Specification