Fluid regulator
First Claim
Patent Images
1. A fluid regulator, comprising:
- a cylindrical body including a first portion configured to be coupled to a source of high pressure fluid and a second portion configured to be coupled to a cannula, the first portion including a fluid inlet and the second portion including a fluid outlet in fluid communication with the fluid inlet, the cylindrical body having an open end and a reduced diameter portion adjacent the open end;
a flow restrictor having at least a first fluid passage configured to provide a first restricted flow rate of fluid and a second fluid passage configured to provide a second restricted flow rate of fluid, the flow restrictor being received in the open end of the cylindrical body portion and moveable relative to the body portion so that one of the first fluid passage and the second fluid passage is selectively interposed between the fluid inlet of the body and the fluid outlet of the body to restrict the flow rate of fluid from the fluid inlet of the body to the fluid outlet of the body; and
a flow selector coupled to the flow restrictor and positioned adjacent the open end of the cylindrical body portion, the flow selector including a first portion having a diameter larger than a diameter of the reduced diameter portion of the cylindrical body, wherein the cylindrical body includes a first diameter larger than the reduced diameter portion and the diameter of the first portion of the flow selector is substantially equal to the first diameter of the cylindrical body.
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Abstract
Fluid regulators are disclosed. An exemplary fluid regulator having a cylindrical body and a reduced diameter portion adjacent an open end of the fluid regulator along with a flow selector positioned adjacent the open end of the fluid regulator and having a diameter larger than the reduced diameter of the cylindrical body is disclosed. Another exemplary fluid regulator having a pressure reduction section positioned within a housing is disclosed.
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Citations
28 Claims
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1. A fluid regulator, comprising:
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a cylindrical body including a first portion configured to be coupled to a source of high pressure fluid and a second portion configured to be coupled to a cannula, the first portion including a fluid inlet and the second portion including a fluid outlet in fluid communication with the fluid inlet, the cylindrical body having an open end and a reduced diameter portion adjacent the open end; a flow restrictor having at least a first fluid passage configured to provide a first restricted flow rate of fluid and a second fluid passage configured to provide a second restricted flow rate of fluid, the flow restrictor being received in the open end of the cylindrical body portion and moveable relative to the body portion so that one of the first fluid passage and the second fluid passage is selectively interposed between the fluid inlet of the body and the fluid outlet of the body to restrict the flow rate of fluid from the fluid inlet of the body to the fluid outlet of the body; and a flow selector coupled to the flow restrictor and positioned adjacent the open end of the cylindrical body portion, the flow selector including a first portion having a diameter larger than a diameter of the reduced diameter portion of the cylindrical body, wherein the cylindrical body includes a first diameter larger than the reduced diameter portion and the diameter of the first portion of the flow selector is substantially equal to the first diameter of the cylindrical body. - View Dependent Claims (2, 3, 4, 5)
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6. A fluid regulator, comprising:
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a cylindrical body including a first portion configured to be coupled to a source of high pressure fluid and a second portion configured to be coupled to a cannula, the first portion including a fluid inlet and the second portion including a fluid outlet in fluid communication with the fluid inlet, the cylindrical body having an open end and a reduced diameter portion adjacent the open end; a flow restrictor having at least a first fluid passage configured to provide a first restricted flow rate of fluid and a second fluid passage configured to provide a second restricted flow rate of fluid, the flow restrictor being received in the open end of the cylindrical body portion and moveable relative to the body portion so that one of the first fluid passage and the second fluid passage is selectively interposed between the fluid inlet of the body and the fluid outlet of the body to restrict the flow rate of fluid from the fluid inlet of the body to the fluid outlet of the body; a flow selector coupled to the flow restrictor and positioned adjacent the open end of the cylindrical body portion, the flow selector including a first portion having a diameter larger than a diameter of the reduced diameter portion of the cylindrical body; and a housing received within the open end of the cylindrical body, the housing including a recess in a first end and an aperture extending from a second end of the housing to the recess and a fluid conduit connecting a first axial surface of the recess and a radial surface of the housing, the flow restrictor being rotatably coupled to the housing and wherein the fluid conduit of the housing is in fluid communication with the fluid outlet of the second portion of the body and a respective fluid passage of the flow restrictor based on the position of the flow restrictor relative to the housing, wherein the reduced diameter portion of the cylindrical body includes a window positioned so that a portion of a second portion of the flow selector is visible therethrough, the second portion of the flow selector being positioned within the open end of the cylindrical body, the visible portion of the second portion of the flow selector including an indicia indicating a flow rate of the one of the first fluid passage and the second fluid passage is selectively interposed between the fluid inlet of the body and the fluid outlet of the body. - View Dependent Claims (7, 8, 9, 10)
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11. A fluid regulator, comprising:
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a cylindrical body including a first portion configured to be coupled to a source of high pressure fluid and a second portion configured to be coupled to a cannula, the first portion including a fluid inlet and the second portion including a fluid outlet in fluid communication with the fluid inlet, the cylindrical body having an open end and a reduced diameter portion adjacent the open end; a flow restrictor having at least a first fluid passage configured to provide a first restricted flow rate of fluid and a second fluid passage configured to provide a second restricted flow rate of fluid, the flow restrictor being received in the open end of the cylindrical body portion and moveable relative to the body portion so that one of the first fluid passage and the second fluid passage is selectively interposed between the fluid inlet of the body and the fluid outlet of the body to restrict the flow rate of fluid from the fluid inlet of the body to the fluid outlet of the body; a flow selector coupled to the flow restrictor and positioned adjacent the open end of the cylindrical body portion, the flow selector including a first portion having a diameter larger than a diameter of the reduced diameter portion of the cylindrical body; a pressure reduction section being received in the open end of the body and positioned between the fluid inlet of the body and the flow restrictor, the pressure reduction section being configured to receive fluid at a first pressure from the fluid inlet and to provide fluid at a lower pressure to the flow restrictor; and a housing positioned within the open end of the body, the housing including a recess into which the flow selector and the pressure reduction section are positioned and a fluid conduit which is aligned with the fluid outlet of the body and selectively aligned with a respective fluid passage of the flow restrictor. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A fluid regulator, comprising:
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a body having an interior cavity accessible through an open end, a fluid inlet which is configured to receive a high pressure fluid from a source of pressurized fluid, and a fluid outlet; a housing positioned in the interior cavity of the body, the housing including an interior cavity accessible from an open end of the housing, a fluid inlet accessible though the open end of the housing which is in fluid communication with the fluid inlet of the body and a fluid outlet in fluid communication with the fluid inlet of the housing and the fluid outlet of the body; a pressure reduction section positioned within the interior cavity of the housing through the open end of the housing, the pressure reduction section being configured to receive the high pressure fluid from the fluid inlet of the body and to provide a lower pressure fluid to the fluid inlet of the housing, the pressure reduction section including; a base member including a base portion and a guide portion extending from the base portion, the base member having a central passageway extending there through, the central passageway being positioned such that it is in fluid communication with the fluid inlet of the body; a piston including a piston base portion and a stem portion, the stem portion being configured to be received by the central passageway in the guide portion of the base member, the piston having a fluid passageway there through with a fluid inlet in the stem portion and a fluid outlet in the piston base portion, the fluid outlet being in fluid communication with the fluid inlet of the housing; and a biasing member sized to receive the guide portion of the base member, a first end of the biasing member being positioned adjacent the base portion of the base member and a second end of the biasing member being positioned adjacent a seat surface of the piston base portion, the seat surface being located in a recess formed in the piston base portion, the recess being sized to receive a first end of the guide portion of the base member; and a rotatable flow restrictor including a flow control portion disposed within the interior cavity of the housing and a stem portion coupled to the disk portion and extending through an aperture connecting the cavity of the housing and a second end of the housing, the flow control portion including a plurality of fluid conduits each selectively being brought into fluid communication with the fluid conduit of the housing through the rotation of the flow restrictor relative to the housing. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification