SYSTEM, METHOD, AND APPARATUS FOR REGULATING PRESSURE
First Claim
1. A reduced-pressure treatment system comprising:
- a dressing;
a supply chamber fluidly coupled to the dressing through a supply lumen;
a control chamber fluidly coupled to the dressing through a feedback lumen;
a charging chamber fluidly coupled to the supply chamber through a port; and
a regulator valve within the control chamber and operable to reciprocate within the control chamber to control fluid communication through the port based on a differential between a control pressure in the control chamber and a therapy pressure.
7 Assignments
0 Petitions
Accused Products
Abstract
Subject matter relating to pressure regulation is described. In one illustrative embodiment, an apparatus for regulating pressure may include a supply chamber, a control chamber, and a charging chamber. The supply chamber may have a supply port adapted for coupling to a supply lumen, and the control chamber may have a control port adapted for coupling to a feedback lumen. The charging chamber can be fluidly coupled to the supply chamber through a charging port. A regulator valve within the control chamber can operate to control fluid communication through the charging port based on a differential between pressure in the control chamber and a target pressure.
44 Citations
37 Claims
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1. A reduced-pressure treatment system comprising:
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a dressing; a supply chamber fluidly coupled to the dressing through a supply lumen; a control chamber fluidly coupled to the dressing through a feedback lumen; a charging chamber fluidly coupled to the supply chamber through a port; and a regulator valve within the control chamber and operable to reciprocate within the control chamber to control fluid communication through the port based on a differential between a control pressure in the control chamber and a therapy pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of regulating therapeutic pressure, the method comprising:
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placing a manifold in a sealed environment proximate to a tissue site; fluidly coupling the manifold to a supply chamber through a supply lumen; fluidly coupling the manifold to a control chamber through a control lumen; fluidly coupling the supply chamber to a charging chamber; reducing a charging pressure in the charging chamber below a therapy pressure; regulating fluid communication between the supply chamber and the charging chamber based on a differential between a control pressure in the control chamber and the therapy pressure; and delivering a supply pressure from the supply chamber to the manifold. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus, comprising:
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a supply chamber having a supply port adapted for coupling to a supply lumen; a control chamber having a control port adapted for coupling to a feedback lumen; a charging chamber fluidly coupled to the supply chamber through a charging port; and a regulator valve within the control chamber and operable to move within the control chamber to control fluid communication through the charging port based on a differential between a control pressure in the control chamber and a target pressure. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An apparatus, comprising:
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a lower housing having an end wall and a side wall; a first piston opposite the end wall of the lower housing and engaged to the side wall of the lower housing to define a charging chamber within the lower housing, wherein the first piston comprises a partition separating a lower bowl from an upper bowl; a charging spring engaged to the first piston and the end wall of the lower housing; a charging port through the first piston; a supply chamber defined by the partition and the lower bowl; an upper housing having a floor and a side wall, wherein the side wall of the upper housing is coupled to the side wall of the lower housing; a control chamber defined by the upper bowl and the floor of the upper housing; a second piston opposite the upper bowl and engaged to the side wall of the lower housing, wherein the second piston divides the control chamber into an ambient pressure region and a control pressure region; a valve body extending through an aperture in the partition into the supply chamber, the valve body having a first end coupled to the second piston and a second end disposed adjacent to the charging port; a regulator spring engaged to the valve body between the charging port and the second piston; and a multi-channel port exposed externally through the upper housing, the multi-channel port comprising a supply port fluidly coupled to the supply chamber and a control port fluidly coupled to the control pressure region of the control chamber; wherein the multi-channel port is adapted for coupling with a multi-lumen tube.
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36. A vacuum pump, comprising:
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a first barrel comprising a closed end, an open end, and an adjoining side wall defining a cylinder; a piston slidingly received within the cylinder; a second barrel slidingly received within the the open end of the first barrel; a charging chamber defined by a sealed portion of the cylinder between the piston and the closed end of the first barrel; a supply chamber within the piston; a control chamber between the piston and the second barrel; a seal slidingly received within the cylinder between the piston and the second barrel, wherein the seal divides the control chamber into a region of control pressure and a region of ambient pressure; a charging port disposed through the piston to allow fluid communication between the charging chamber and the supply chamber; and a regulator valve adapted to be actuated by a differential force on the seal to regulate fluid communication between the supply chamber and the control chamber through the charging port. - View Dependent Claims (37)
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Specification