Pump with Venting
First Claim
Patent Images
1. A medication pump, comprising:
- a housing including an external wall and a plurality of internal adjoining housings, including a first housing enclosing a cartridge;
a primary vent for venting the medication pump to atmosphere, the primary vent including a primary liquid barrier allowing passage of gas therethrough while preventing passage of liquid therethrough; and
a secondary vent on the first housing, the secondary vent including a secondary liquid barrier allowing passage of gas therethrough to an interior of the housing while preventing passage of liquid therethrough.
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Accused Products
Abstract
A medication pump includes a housing including an external wall and a plurality of internal adjoining housings, including a first housing enclosing a cartridge. The pump includes a primary vent for venting the medication pump to atmosphere, the primary vent including a primary liquid barrier allowing passage of gas therethrough while preventing passage of liquid therethrough. The pump includes a secondary vent on the first housing, the secondary vent including a secondary liquid barrier allowing passage of gas therethrough to an interior of the housing while preventing passage of liquid therethrough.
96 Citations
20 Claims
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1. A medication pump, comprising:
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a housing including an external wall and a plurality of internal adjoining housings, including a first housing enclosing a cartridge;
a primary vent for venting the medication pump to atmosphere, the primary vent including a primary liquid barrier allowing passage of gas therethrough while preventing passage of liquid therethrough; and
a secondary vent on the first housing, the secondary vent including a secondary liquid barrier allowing passage of gas therethrough to an interior of the housing while preventing passage of liquid therethrough. - View Dependent Claims (2, 3, 4, 5)
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6. A medication pump, comprising:
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an outer housing defining an interior divided into at least first and second chambers; and
an interior vent formed between the first and second chambers, the interior vent including a liquid barrier allowing passage of gas between the first and second chambers while preventing passage of liquid therethrough. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of venting a medication pump, the method comprising:
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forming an interior vent between first and second chambers in an interior of a housing of the medication pump, the interior vent including a liquid barrier allowing passage of gas between the first and second chambers while preventing passage of liquid therethrough; and
allowing gas to pass through the interior vent from the first chamber to the second chamber. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification