REDUCED PRESSURE DELIVERY SYSTEM HAVING A MANUALLY-ACTIVATED PUMP FOR PROVIDING TREATMENT TO LOW-SEVERITY WOUNDS
First Claim
1. A manually-compressible pump for reduced pressure treatment, comprising:
- a compressible side wall;
first and second end caps connected at opposite ends of the side wall to form an inner chamber defined by the side wall and the end caps, the inner chamber having a volume that varies from a maximum value when the side wall is in an uncompressed position to a minimum value when the side wall is in a compressed position;
a connection port disposed in one of the first and second end caps to allow fluid communication with the inner chamber;
a one-way valve disposed in one of the first end cap, the second end cap, and the side wall to allow fluid expulsion from the inner chamber; and
a hydrophobic filter in communication with the one-way valve to prevent liquid from exiting the inner chamber through the one-way valve.
5 Assignments
0 Petitions
Accused Products
Abstract
A manually-activated reduced pressure treatment system includes a substantially rigid housing, and an end cap slidingly received by the housing. An inner chamber is disposed between the end cap and housing, and a volume of the inner chamber is variable in amount depending on the position of the end cap within the housing. The end cap is slidingly movable between an uncompressed position at which the volume of the inner chamber is at a maximum value and a compressed position at which the volume of the inner chamber is at a minimum value. A position indicating member is associated with the end cap and housing to indicate the position of the end cap relative to the housing at predetermined positions between the uncompressed position and the compressed position.
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Citations
31 Claims
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1. A manually-compressible pump for reduced pressure treatment, comprising:
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a compressible side wall; first and second end caps connected at opposite ends of the side wall to form an inner chamber defined by the side wall and the end caps, the inner chamber having a volume that varies from a maximum value when the side wall is in an uncompressed position to a minimum value when the side wall is in a compressed position; a connection port disposed in one of the first and second end caps to allow fluid communication with the inner chamber; a one-way valve disposed in one of the first end cap, the second end cap, and the side wall to allow fluid expulsion from the inner chamber; and a hydrophobic filter in communication with the one-way valve to prevent liquid from exiting the inner chamber through the one-way valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A low-profile reduced pressure treatment system comprising:
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a reduced pressure manifold configured to be placed adjacent to a tissue site; and a delivery tube fluidly connected to the reduced pressure manifold, the delivery tube having a substantially rectangular cross-section and a plurality of corrugations within the delivery tube to prevent collapse of the delivery tube during delivery of reduced pressure. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A pump for reduced pressure therapy, the pump comprising:
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a bellows defining an inner chamber having a variable volume; a connection port configured allow fluid communication between the inner chamber and a delivery tube; a one-way valve configured to allow fluid expulsion from the inner chamber; and a hydrophobic filter in communication with the one-way valve to prevent liquid from exiting the inner chamber through the one-way valve. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of activating a reduced pressure treatment pump, the method comprising:
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compressing a flexible diaphragm to reduce a volume of a chamber fluidly connected to a tissue site; indicating the position of the flexible diaphragm at a position between an uncompressed position and a compressed position; determining an estimated reduced pressure provided by the compressed flexible diaphragm based on the indicated position; and delivering reduced pressure to the tissue site. - View Dependent Claims (29, 30, 31)
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Specification