Conserver
First Claim
Patent Images
1. A conserver which receives a fluid from a source of pressurized fluid and provides fluid to a patient through a single lumen cannula, the conserver comprising:
- a body including at least three body members stacked along a first direction, the body having a fluid input in a first body member, a fluid output in a side of a second body member providing a single fluid connection between the body and the single lumen cannula, wherein the single fluid connection is the only fluid connection between the body and the single lumen cannula, and a fluid passage configured to connect the fluid input to the fluid output;
a pressure reduction section disposed within the first body member of the body and in fluid communication with the fluid passage, the pressure reduction section receiving fluid from the fluid inlet of the body at a first pressure and providing fluid to a portion of the fluid passage positioned downstream of the pressure reduction section;
at least one user input supported by the body;
a pneumatic controller positioned downstream of the pressure reduction section in at least one of the at least three body members other than the first body member, the pneumatic controller having a first configuration to provide a continuous flow of fluid to the fluid outlet of the body in a continuous mode and a second configuration to provide an intermittent flow of fluid to the fluid outlet of the body in an intermittent mode, the intermittent mode and the continuous mode being selectable by the at least one user input, the pneumatic controller includes a sense diaphragm which in the intermittent mode moves along the first direction relative to a diaphragm seat between a closed position and an open position to control the provision of fluid to the single lumen cannula; and
a coupler coupled to the first body member of the body, the coupler having a fluid conduit in fluid communication with the fluid inlet of the body, the coupler being adapted to couple to a source of pressurized fluid, wherein the coupler is made from a first material selected from the group of a brass based material, a copper based material, and a titanium based material and the body is made from a second material selected from the group of an aluminum based material, a composite based material, and a polymeric based material.
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Accused Products
Abstract
Fluid regulators provide a fluid to a cannula for use by a person. Fluid conservers also a fluid to a cannula for use by a person. A fluid conserver may be operational in a continuous flow mode of operation and an intermittent flow mode of operation. The selection of either the continuous flow mode of operation and the intermittent flow mode of operation may be based on a position of a flow selector. A home fill device may operate with a fluid conserver and may include an oxygen concentrator which provides a source of fluid.
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Citations
16 Claims
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1. A conserver which receives a fluid from a source of pressurized fluid and provides fluid to a patient through a single lumen cannula, the conserver comprising:
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a body including at least three body members stacked along a first direction, the body having a fluid input in a first body member, a fluid output in a side of a second body member providing a single fluid connection between the body and the single lumen cannula, wherein the single fluid connection is the only fluid connection between the body and the single lumen cannula, and a fluid passage configured to connect the fluid input to the fluid output; a pressure reduction section disposed within the first body member of the body and in fluid communication with the fluid passage, the pressure reduction section receiving fluid from the fluid inlet of the body at a first pressure and providing fluid to a portion of the fluid passage positioned downstream of the pressure reduction section; at least one user input supported by the body; a pneumatic controller positioned downstream of the pressure reduction section in at least one of the at least three body members other than the first body member, the pneumatic controller having a first configuration to provide a continuous flow of fluid to the fluid outlet of the body in a continuous mode and a second configuration to provide an intermittent flow of fluid to the fluid outlet of the body in an intermittent mode, the intermittent mode and the continuous mode being selectable by the at least one user input, the pneumatic controller includes a sense diaphragm which in the intermittent mode moves along the first direction relative to a diaphragm seat between a closed position and an open position to control the provision of fluid to the single lumen cannula; and a coupler coupled to the first body member of the body, the coupler having a fluid conduit in fluid communication with the fluid inlet of the body, the coupler being adapted to couple to a source of pressurized fluid, wherein the coupler is made from a first material selected from the group of a brass based material, a copper based material, and a titanium based material and the body is made from a second material selected from the group of an aluminum based material, a composite based material, and a polymeric based material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A conserver which receives a fluid from a source of pressurized fluid and provides fluid to a patient through a single lumen cannula, the conserver comprising:
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a body having a fluid input, a fluid output providing a single fluid connection between the body and the single lumen cannula, wherein the single fluid connection is the only fluid connection between the body and the single lumen cannula, and a fluid passage configured to connect the fluid input to the fluid output; a pressure reduction section disposed within the body and in fluid communication with the fluid passage, the pressure reduction section receiving fluid from the fluid inlet of the body at a first pressure and providing fluid to a portion of the fluid passage positioned downstream of the pressure reduction section; at least one user input supported by the body; a controller positioned downstream of the pressure reduction section, the controller having a first configuration to provide a continuous flow of fluid to the fluid outlet of the body in a continuous mode and a second configuration to provide an intermittent flow of fluid to the fluid outlet of the body in an intermittent mode wherein an inhalation of the patient is sensed through the fluid outlet coupled to the single lumen cannula by a sensing portion of the controller, the intermittent mode and the continuous mode being selectable by the at least one user input; a coupler coupled to the body, the coupler having a fluid conduit in fluid communication with the fluid inlet of the body, the coupler being adapted to couple to a portable source of pressurized fluid, wherein the coupler is made from a first material selected from the group of a brass based material, a copper based material, and a titanium based material and the body is made from a second material selected from the group of an aluminum based material, a composite based material, and a polymeric based material; and a quick connect fitting coupled to the body, the quick connect fitting including a fluid conduit in fluid communication with the fluid inlet of the body and being adapted to be coupled to a second source of pressurized fluid, the quick connect fitting being spaced apart from the coupler such that both the portable source of pressurized fluid and the second source of pressurized fluid are coupled to the conserver at the same time. - View Dependent Claims (10, 11)
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12. A conserver which receives a fluid from a source of pressurized fluid and provides fluid to a patient through a single lumen cannula, the conserver comprising:
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a body having a fluid input, a fluid output adapted to be coupled to a cannula providing a single fluid connection between the body and the single lumen cannula, wherein the single fluid connection is the only fluid connection between the body and the single lumen cannula, and a fluid passage configured to connect the fluid input to the fluid output; a pressure reduction section disposed within the body and in fluid communication with the fluid passage, the pressure reduction section receiving fluid from the fluid inlet of the body at a first pressure and providing fluid to a portion of the fluid passage positioned downstream of the pressure reduction section; a pneumatic controller positioned downstream of the pressure reduction section, the pneumatic controller having a first configuration to provide a continuous flow of fluid to the fluid outlet of the body in a continuous mode and to provide an intermittent flow of fluid to the fluid outlet of the body in an intermittent mode, the pneumatic controller including a demand piston which is spaced apart from a seat when fluid is being provided from the fluid inlet to the fluid outlet; a flow selector having a plurality of fluid passages, each having a corresponding flow rate, the flow selector being positioned to receive fluid from the pressure reduction and to provide fluid to the pneumatic controller, the flow selector being rotatable relative to the body and including a first surface actuatable to rotate the flow selector, the first surface being actuatable from an exterior of the body and at least a portion of the first surface being moved from the exterior of the body to an interior of the body as the flow selector is rotated; and a coupler coupled to the body, the coupler having a fluid conduit in fluid communication with the fluid inlet of the body, the coupler being adapted to couple to a portable source of pressurized fluid, wherein the coupler is made from a first material selected from the group of a brass based material, a copper based material, and a titanium based material and the body is made from a second material selected from the group of an aluminum based material, a composite based material, and a polymeric based material. - View Dependent Claims (13, 14)
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15. A conserver which receives a fluid from a source of pressurized fluid and provides fluid to a patient through a single lumen cannula, the conserver comprising:
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a body having a fluid input, a fluid output adapted to be coupled to a cannula, and a fluid passage configured to connect the fluid input to the fluid output; a pressure reduction section disposed within the body and in fluid communication with the fluid passage, the pressure reduction section receiving fluid from the fluid inlet of the body at a first pressure and providing fluid to a portion of the fluid passage positioned downstream of the pressure reduction section; a pneumatic controller positioned downstream of the pressure reduction section, the pneumatic controller having a first configuration to provide a continuous flow of fluid to the fluid outlet of the body in a continuous mode and to provide an intermittent flow of fluid to the fluid outlet of the body in an intermittent mode; a flow selector having a plurality of fluid passages, each having a corresponding flow rate, the flow selector being positioned to receive fluid from the pressure reduction and to provide fluid to the pneumatic controller; and a coupler coupled to the body, the coupler having a fluid conduit in fluid communication with the fluid inlet of the body, the coupler being adapted to couple to a portable source of pressurized fluid, wherein the coupler is made from a first material selected from the group of a brass based material, a copper based material, and a titanium based material and the body is made from a second material selected from the group of an aluminum based material, a composite based material, and a polymeric based material, wherein a position of the flow selector controls the placement of a valve which controls the pneumatic controller to place the pneumatic controller in one of the continuous mode and the intermediate mode. - View Dependent Claims (16)
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Specification