CA2212636A1 - Apparatus for controlling flow of biological/medical fluids to and from a patient - Google Patents
Apparatus for controlling flow of biological/medical fluids to and from a patientInfo
- Publication number
- CA2212636A1 CA2212636A1 CA002212636A CA2212636A CA2212636A1 CA 2212636 A1 CA2212636 A1 CA 2212636A1 CA 002212636 A CA002212636 A CA 002212636A CA 2212636 A CA2212636 A CA 2212636A CA 2212636 A1 CA2212636 A1 CA 2212636A1
- Authority
- CA
- Canada
- Prior art keywords
- flow path
- flow
- channel
- opening
- valve element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
- F16K11/0853—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in a single plane perpendicular to the axis of the plug
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/223—Multiway valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
- F16K47/045—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member and the closure member being rotatable
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86815—Multiple inlet with single outlet
- Y10T137/86823—Rotary valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86863—Rotary valve unit
- Y10T137/86871—Plug
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87571—Multiple inlet with single outlet
- Y10T137/87676—With flow control
Abstract
An apparatus for controlling the flow of fluids between a main conduit and a plurality of secondary conduits includes a valve body having a wall defining a cylindrical bore, the wall having a plurality of ports in respective flow communications with the main conduit and the secondary conduits, and a valve element rotatably disposed within the cylindrical bore of the valve body. The valve element body has internal flow paths with openings flush with a peripheral surface of the valve element body and a channel in flow communication with one of the flow paths, the channel having an opening extending from one of the openings of one of the internal flow paths. In addition, one of the internal flow paths has an enlarged opening to accommodate flow through the channel. The valve element and valve body cooperate to permit fluid flow between the main conduit and a selected one of the secondary conduits by rotating the valve element to align the openings of the channel and the flow paths relative to the ports.
Description
. -- 1 --APPARA~IJS FOR ~,ONTROLLING FLOW OF BIOLOGICAL/MEDIC~
FLIJIDS TO AND FROM A PA~
BACKGROUND OF THE lN Vl~;N'l'lON
Field of the Invention The present i~lvention relates generally to valves and, more part:icularly, to a valve for controlling the ~low o~
biological/medical fluids to and ~rom a patient.
Discussion of the Related Art 5upplying and withdrawing fluids to and ~rom a patient typically requires invasive procedures, such as intravenous connections via a needle. Thus, when several fluids are transferred to and from a patient, it is advantageous to m;n;m; ze the number of invasive procedures (i.e., the number of separate intravenous or other connections) since such connections increase risk and cause discomfort to t-he patient.
In a~dition, b:iological fluids withdrawn from a patient may have l_o be m; ~e-~ with medical fluids and then returned to the palient. For example, blood may be withdrawn from a patient, rnixed with an anticoagulant or other medical fluid, processed, and returned to the patient. As a result, it is advantageous to use a common junction for regulating fluids between plural conduits. Furthermore, the withdrawing, mixing, and injecting of medical/biological fluids generally requires precise control of their flow rates.
There are known manifold valves that allow delivery of several fluids to a patient via one main conduit line attached to the patient. One such manifold valve includes several ports that flow connect the main conduit to one or more secondary conduits. Flow com~lln;cation between the secondary conduits and the main conduit is controlled by a valve element positioned within a cylindrical valve body that is flow connected to the main and secondary conduits.
As shown in FIG. 8, the valve element 100 includes a valve element body 102 rotatably inserted within the valve body wos6l2676o PCT~S96/02327 (not shown). The valve element body 102 has cylindrical bores that define internal flow paths with openings 104 and 106 ~lush with a peripheral surface of the valve element body. Alignment of the openings with ports in the valve body permit fluid flow between the main conduit and a selected one o~ the secondary conduits via the internal flow paths in the valve element.
One of the drawbacks of such a valve is that it is di~icult to precisely regulate fluid flow when the valve element is in a position other than fully opened or closed.
In other words, it is difficult to incrementally increase or decrease flow rates, given the traditional circular valve opening. Precise regulation of the flow rate is particularly difficult when ~luids are being infused under high pressure. As a consequence, conventional valves generally provide an "all-or-nothing" fluid flow, which is disadvantageous, particularly when slower flow rates are desired.
SUMMARY OF THE INVENTION
The present invention is directed to a valve that substantially obviates one or more o~ the problems due to limitations and disadvantages of the related art.
Additional ~eatures and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages o~ the invention will be realized and attained by the system particularly pointed out in the written description and claims, as well as the appended drawings.
To achieve these and other advantages in accordance with the purpose of the invention, as embodied and broadly described herein, the apparatus of the invention includes a valve body having a wall de~ining a cylindrical opening, the wall having a plurality of ports in respective flow c~mm-ln;cation with a main conduit and at least one secondary conduit; and a valve element rotatably disposed within the W096/26760 PCT~S96/02327 cylindrical opening of the valve body, the valve element having a peripheral surface contacting the valve body, a first internal ~low path having openings flush with the peripheral surface, a second internal flow path intersecting the first flow path and having an opening flush with the peripheral surface, and a channel in flow commlln;cation with the first flow path and having an opening flush with the peripheral surface and extending from one of the openings o~
the first flow path; the valve element and valve body cooperating to permit fluid flow between the main conduit and the secondary conduit by rotating the valve element to align the openings of the channel and the first and second flow paths relative to the plurality o~ ports, the ~h~nn~l permitting ~low through the ~irst flow path when at least a portion of the ~h~nl~l opening is aligned with one of the ports.
It is to be understood that both the foregoing general description and ~he following detailed description are exemplary and explanatory only and are not restrictive of the invention, as c:Laimed.
The accompanying drawings, which are incorporated in and constitute a pa:rt of this specification, illustrate one embodiment of the il.lvention and together with the description, serve lo explain the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top view of a valve of the present invention.
FIG. 2 is a front view of the valve of FIG. 1.
FIG. 3 is a side view o~ a valve element for the valve of FIG. 1.
FIG. 4 is a sectional view of the valve element of FIG.
3 taken along the line 3-3.
FIGS. 5A-C, 6A-C, and 7A-C are diagrams showing flow paths through the valve element of FIG. 3.
CA 022l2636 1997-os-o7 FIG. 8 is a side view of a valve element for a conventional valve.
DESCRIPTION OF THE PREFERRED E~ODIMENT
Reference will now be made in detail to the present preferred e-m-bodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference characters will be used throughout the drawings to refer to the same or like parts.
An exemplary e-mbodiment of the valve of the present invention is shown in FIG. 1 and is designated generally by reference numeral 10. As embodied herein and shown in FIGS.
1 and 2, valve 10 includes a manifold 12 for connecting a main conduit 14 (leading to a patient or fluid processing apparatus) in flow commlln;cation with one or more secondary conduits 16. The manifold 12 is preferably composed of clear plastic and may be made by injection molding. One type of manifold that may be used is one made by Merit Medical Systems, Inc. of South Jordan, Utah.
The main conduit 14 and secondary conduits 16, which are typically flexible, plastic tubing, are connected to the manifold 12 via ports 18a-d. Each port, which is preferably integral with the mani~old, includes a cylindrical passageway 20 (FIG. 2) and a threaded rim 22 for facilitating connection with the conduits. In addition, a threaded connector 24 is provided for coupling port 18d to the main conduit 14.
The manifold 12 also includes valve bodies 26a and 26b.
Each valve body includes a cylindrical wall defining a bore extending therethrough in a direction perpendicular to a longitn~l; n~l axis 28 of the manifold 12. As shown in FIG.
1, ports 18a and 18b are connected in flow cnmmlln;cation with valve body 26a, while ports 18c and 18d are connected in flow cnmmlln;cation with valve body 26b. Valve bodies 26a and 26b are also Elow connected to each other via an internal passageway 30 formed within the manifold 12. Thus, each valve body is in flow cnmmlln;cation with three separate ~low paths.
Although two ~alve bodies and four ports are shown, any number o~ valve boclies and ports may be included as desired depending on the n~ber of conduits to be attached to the mani~old~ Also, t~le valve bodies need not be integral with the manif.-old, and may be flow connected by a flexible tubing segment instead o~ internal passageway 30.
Flow between t:he secondary conduits 16 and the main conduit 14 is controlled by a valve element 32 disposed in each val~e body 26a and 26b o~ the manifold 12. As shown in FIG. 3, valve element 32 has a valve element body 34 with a peripheral surface 36. A handle 38 extends ~rom the valve element body 34 ~or rotating the valve element 32 within the valve bodies. The valve element is preferably plastic and is sized to snugly ~it within the valve body so that ~luid does not escape between the cylindrical sur~aces of the valve element and the cylindrical wall of the valve body.
As shown in FIGS. 3 and 4, a central passageway 40 extends through the valve element body 34 and has two openings 42 and 44 flush with the peripheral surface 36.
Passageway 40 is preferably cylindrical and substantially equal in diameter to the diameters of the passageways through ports 18a-d and passageway 20. A second passageway 46 extends through the valve element body 34 in a direction subs~antially perpendicular to the central passageway 40 and intersects the central passageway 40. The second passageway 46 has an enlarged opening 48 ~lush with the peripheral surface 36 ~or acco]~modating ~low through a rh~nn~l 50. The enlarged opening 48 is larger than opening 44 and may be, ~or example, substantially elliptical or ovate in shape.
As shown in FI~JS. 3 and 4, a narrow ch~nn~l 50 extends from opening 42 in a direction perpendicular to a central axis 52 of the valve element body 34 and is ~low connected to central passageway 40. As shown in FIG. 3, the narrow channel 50 has a substantially rectangular opening ~lush with the peripheral surface that is smaller in area and in width than opening ~12 The ch~nn~l 50 may be a slit or a bore or any other con~iguration so long as it provides a W096/26760 CA 022l2636 1997-08-07 PCT~S96102327 lesser flow rate (i e., a smaller area) than opening 42.
Furthermore, the opening of the channel 50 need not be rectangular, but may also be triangular, elliptical, and other shapes as well.
The regulation of fluid flow by the valve element is illustrated in FIGS. 5A-C through 7A-C. FIGS. 5A-C are schematic views of the flow paths through valve element 32, and FIGS. 6A-C and 7A-C are views of the valve element 32 and valve body 26a shown in FIGS. 5A-C as seen through port 18b and internal passageway 30, respectively.
When valve element 32 is in the position shown in FIG.
1, the flow paths through valve element 32 are aligned as shown in FIG. 5A, thus permitting flow between port 18a and passageway 30 and blocking flow between port 18b and passageway 30, as shown in FIGS. 6A and 7A. When valve element 32 is rotated in a clockwise direction to the position shown in FIG. 5B, the valve element body 34 blocks flow to/from port 18a and allows partial flow between port 18b and passageway 30. As shown in FIG. 6B, a portion of channel 50 comm-ln;cates with port 18b to allow flow proportional to the channel opening area exposed to port 18b. Flow from passageway 40 into passageway 30 via passageway 46 is possible because opening 48 is enlarged to extend around the peripheral surface in the same direction and magnitude as ~h~nn~l 50 extends from opening 42, as shown in FIG. 7B. When the valve element 32 is further rotated in the clockwise direction, as shown in FIGS. 5C, 6C, and 7C, rh~nn~l 50 and a portion of opening 42 are exposed to port 18b, and a larger portion of opening 48 is exposed to passageway 30, thus allowing a greater rate of flow into passageway 30.
In the above embodiment, each valve element 32 is rotatable + 90~ relative to the valve body. Thus, handle 38 can be rotatable 90~ ~rom the position shown in FIG. 1 (over port 18b) to a position over port 18a, or 90~ from the position shown in FIG. 1 to a position over passageway 30.
W096/26760 PCT~S96/02327 Stops may be provided on the mani~old or within the valve bodies to prevent further rotation of the valve elements.
Although each valve element 32 shown in the figures includes a channel ~;0 and an enlarged opening 48, only one valve elernent may include a ch~nn~l and an enlarged opening if the flow through the r~m~;n;ng valve(s) is not critical.
In addition, the valve element may include a channel in cnmmnn;cation with each opening if precise flow regulation through several secc,ndary conduits is desired.
It will be apparent to those skilled in the art that various modifications and variations can be made in the apparatus o~ the present invention without departing ~rom the scope or spirit of the invention. Thus, it is intended that the present invention cover the modifications and variations o~ this invention provided they come within the scope of the claims and their equivalents.
FLIJIDS TO AND FROM A PA~
BACKGROUND OF THE lN Vl~;N'l'lON
Field of the Invention The present i~lvention relates generally to valves and, more part:icularly, to a valve for controlling the ~low o~
biological/medical fluids to and ~rom a patient.
Discussion of the Related Art 5upplying and withdrawing fluids to and ~rom a patient typically requires invasive procedures, such as intravenous connections via a needle. Thus, when several fluids are transferred to and from a patient, it is advantageous to m;n;m; ze the number of invasive procedures (i.e., the number of separate intravenous or other connections) since such connections increase risk and cause discomfort to t-he patient.
In a~dition, b:iological fluids withdrawn from a patient may have l_o be m; ~e-~ with medical fluids and then returned to the palient. For example, blood may be withdrawn from a patient, rnixed with an anticoagulant or other medical fluid, processed, and returned to the patient. As a result, it is advantageous to use a common junction for regulating fluids between plural conduits. Furthermore, the withdrawing, mixing, and injecting of medical/biological fluids generally requires precise control of their flow rates.
There are known manifold valves that allow delivery of several fluids to a patient via one main conduit line attached to the patient. One such manifold valve includes several ports that flow connect the main conduit to one or more secondary conduits. Flow com~lln;cation between the secondary conduits and the main conduit is controlled by a valve element positioned within a cylindrical valve body that is flow connected to the main and secondary conduits.
As shown in FIG. 8, the valve element 100 includes a valve element body 102 rotatably inserted within the valve body wos6l2676o PCT~S96/02327 (not shown). The valve element body 102 has cylindrical bores that define internal flow paths with openings 104 and 106 ~lush with a peripheral surface of the valve element body. Alignment of the openings with ports in the valve body permit fluid flow between the main conduit and a selected one o~ the secondary conduits via the internal flow paths in the valve element.
One of the drawbacks of such a valve is that it is di~icult to precisely regulate fluid flow when the valve element is in a position other than fully opened or closed.
In other words, it is difficult to incrementally increase or decrease flow rates, given the traditional circular valve opening. Precise regulation of the flow rate is particularly difficult when ~luids are being infused under high pressure. As a consequence, conventional valves generally provide an "all-or-nothing" fluid flow, which is disadvantageous, particularly when slower flow rates are desired.
SUMMARY OF THE INVENTION
The present invention is directed to a valve that substantially obviates one or more o~ the problems due to limitations and disadvantages of the related art.
Additional ~eatures and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages o~ the invention will be realized and attained by the system particularly pointed out in the written description and claims, as well as the appended drawings.
To achieve these and other advantages in accordance with the purpose of the invention, as embodied and broadly described herein, the apparatus of the invention includes a valve body having a wall de~ining a cylindrical opening, the wall having a plurality of ports in respective flow c~mm-ln;cation with a main conduit and at least one secondary conduit; and a valve element rotatably disposed within the W096/26760 PCT~S96/02327 cylindrical opening of the valve body, the valve element having a peripheral surface contacting the valve body, a first internal ~low path having openings flush with the peripheral surface, a second internal flow path intersecting the first flow path and having an opening flush with the peripheral surface, and a channel in flow commlln;cation with the first flow path and having an opening flush with the peripheral surface and extending from one of the openings o~
the first flow path; the valve element and valve body cooperating to permit fluid flow between the main conduit and the secondary conduit by rotating the valve element to align the openings of the channel and the first and second flow paths relative to the plurality o~ ports, the ~h~nn~l permitting ~low through the ~irst flow path when at least a portion of the ~h~nl~l opening is aligned with one of the ports.
It is to be understood that both the foregoing general description and ~he following detailed description are exemplary and explanatory only and are not restrictive of the invention, as c:Laimed.
The accompanying drawings, which are incorporated in and constitute a pa:rt of this specification, illustrate one embodiment of the il.lvention and together with the description, serve lo explain the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top view of a valve of the present invention.
FIG. 2 is a front view of the valve of FIG. 1.
FIG. 3 is a side view o~ a valve element for the valve of FIG. 1.
FIG. 4 is a sectional view of the valve element of FIG.
3 taken along the line 3-3.
FIGS. 5A-C, 6A-C, and 7A-C are diagrams showing flow paths through the valve element of FIG. 3.
CA 022l2636 1997-os-o7 FIG. 8 is a side view of a valve element for a conventional valve.
DESCRIPTION OF THE PREFERRED E~ODIMENT
Reference will now be made in detail to the present preferred e-m-bodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference characters will be used throughout the drawings to refer to the same or like parts.
An exemplary e-mbodiment of the valve of the present invention is shown in FIG. 1 and is designated generally by reference numeral 10. As embodied herein and shown in FIGS.
1 and 2, valve 10 includes a manifold 12 for connecting a main conduit 14 (leading to a patient or fluid processing apparatus) in flow commlln;cation with one or more secondary conduits 16. The manifold 12 is preferably composed of clear plastic and may be made by injection molding. One type of manifold that may be used is one made by Merit Medical Systems, Inc. of South Jordan, Utah.
The main conduit 14 and secondary conduits 16, which are typically flexible, plastic tubing, are connected to the manifold 12 via ports 18a-d. Each port, which is preferably integral with the mani~old, includes a cylindrical passageway 20 (FIG. 2) and a threaded rim 22 for facilitating connection with the conduits. In addition, a threaded connector 24 is provided for coupling port 18d to the main conduit 14.
The manifold 12 also includes valve bodies 26a and 26b.
Each valve body includes a cylindrical wall defining a bore extending therethrough in a direction perpendicular to a longitn~l; n~l axis 28 of the manifold 12. As shown in FIG.
1, ports 18a and 18b are connected in flow cnmmlln;cation with valve body 26a, while ports 18c and 18d are connected in flow cnmmlln;cation with valve body 26b. Valve bodies 26a and 26b are also Elow connected to each other via an internal passageway 30 formed within the manifold 12. Thus, each valve body is in flow cnmmlln;cation with three separate ~low paths.
Although two ~alve bodies and four ports are shown, any number o~ valve boclies and ports may be included as desired depending on the n~ber of conduits to be attached to the mani~old~ Also, t~le valve bodies need not be integral with the manif.-old, and may be flow connected by a flexible tubing segment instead o~ internal passageway 30.
Flow between t:he secondary conduits 16 and the main conduit 14 is controlled by a valve element 32 disposed in each val~e body 26a and 26b o~ the manifold 12. As shown in FIG. 3, valve element 32 has a valve element body 34 with a peripheral surface 36. A handle 38 extends ~rom the valve element body 34 ~or rotating the valve element 32 within the valve bodies. The valve element is preferably plastic and is sized to snugly ~it within the valve body so that ~luid does not escape between the cylindrical sur~aces of the valve element and the cylindrical wall of the valve body.
As shown in FIGS. 3 and 4, a central passageway 40 extends through the valve element body 34 and has two openings 42 and 44 flush with the peripheral surface 36.
Passageway 40 is preferably cylindrical and substantially equal in diameter to the diameters of the passageways through ports 18a-d and passageway 20. A second passageway 46 extends through the valve element body 34 in a direction subs~antially perpendicular to the central passageway 40 and intersects the central passageway 40. The second passageway 46 has an enlarged opening 48 ~lush with the peripheral surface 36 ~or acco]~modating ~low through a rh~nn~l 50. The enlarged opening 48 is larger than opening 44 and may be, ~or example, substantially elliptical or ovate in shape.
As shown in FI~JS. 3 and 4, a narrow ch~nn~l 50 extends from opening 42 in a direction perpendicular to a central axis 52 of the valve element body 34 and is ~low connected to central passageway 40. As shown in FIG. 3, the narrow channel 50 has a substantially rectangular opening ~lush with the peripheral surface that is smaller in area and in width than opening ~12 The ch~nn~l 50 may be a slit or a bore or any other con~iguration so long as it provides a W096/26760 CA 022l2636 1997-08-07 PCT~S96102327 lesser flow rate (i e., a smaller area) than opening 42.
Furthermore, the opening of the channel 50 need not be rectangular, but may also be triangular, elliptical, and other shapes as well.
The regulation of fluid flow by the valve element is illustrated in FIGS. 5A-C through 7A-C. FIGS. 5A-C are schematic views of the flow paths through valve element 32, and FIGS. 6A-C and 7A-C are views of the valve element 32 and valve body 26a shown in FIGS. 5A-C as seen through port 18b and internal passageway 30, respectively.
When valve element 32 is in the position shown in FIG.
1, the flow paths through valve element 32 are aligned as shown in FIG. 5A, thus permitting flow between port 18a and passageway 30 and blocking flow between port 18b and passageway 30, as shown in FIGS. 6A and 7A. When valve element 32 is rotated in a clockwise direction to the position shown in FIG. 5B, the valve element body 34 blocks flow to/from port 18a and allows partial flow between port 18b and passageway 30. As shown in FIG. 6B, a portion of channel 50 comm-ln;cates with port 18b to allow flow proportional to the channel opening area exposed to port 18b. Flow from passageway 40 into passageway 30 via passageway 46 is possible because opening 48 is enlarged to extend around the peripheral surface in the same direction and magnitude as ~h~nn~l 50 extends from opening 42, as shown in FIG. 7B. When the valve element 32 is further rotated in the clockwise direction, as shown in FIGS. 5C, 6C, and 7C, rh~nn~l 50 and a portion of opening 42 are exposed to port 18b, and a larger portion of opening 48 is exposed to passageway 30, thus allowing a greater rate of flow into passageway 30.
In the above embodiment, each valve element 32 is rotatable + 90~ relative to the valve body. Thus, handle 38 can be rotatable 90~ ~rom the position shown in FIG. 1 (over port 18b) to a position over port 18a, or 90~ from the position shown in FIG. 1 to a position over passageway 30.
W096/26760 PCT~S96/02327 Stops may be provided on the mani~old or within the valve bodies to prevent further rotation of the valve elements.
Although each valve element 32 shown in the figures includes a channel ~;0 and an enlarged opening 48, only one valve elernent may include a ch~nn~l and an enlarged opening if the flow through the r~m~;n;ng valve(s) is not critical.
In addition, the valve element may include a channel in cnmmnn;cation with each opening if precise flow regulation through several secc,ndary conduits is desired.
It will be apparent to those skilled in the art that various modifications and variations can be made in the apparatus o~ the present invention without departing ~rom the scope or spirit of the invention. Thus, it is intended that the present invention cover the modifications and variations o~ this invention provided they come within the scope of the claims and their equivalents.
Claims (16)
1. Apparatus for controlling the flow of fluids between a main conduit and a plurality of secondary conduits, comprising:
a manifold including a plurality of valve bodies, each having a wall defining a cylindrical bore, the wall having a plurality of ports in respective flow communications with of the main conduit and at least one of the secondary conduits, the manifold further including an internal passageway connecting the valve bodies in flow communication; and a valve element rotatably disposed within the bore of each valve body, the valve element having a peripheral surface contacting the valve body, a first internal flow path having openings flush with the peripheral surface, a second internal flow path intersecting the first flow path and having an opening flush with the peripheral surface, and a channel in flow communication with the first flow path and having an opening flush with the peripheral surface and extending from one of the openings of the first flow path;
each valve element and valve body cooperating to permit fluid flow between the main conduit and a selected one of the secondary conduits by rotating the valve element to align the openings of the channel and the first and second flow paths relative to the plurality of ports, the channel and second flow path opening permitting flow through the first and second flow paths when at least a portion of the channel opening is aligned with one of the ports and at least a portion of the second flow path opening is aligned with another one of the ports.
a manifold including a plurality of valve bodies, each having a wall defining a cylindrical bore, the wall having a plurality of ports in respective flow communications with of the main conduit and at least one of the secondary conduits, the manifold further including an internal passageway connecting the valve bodies in flow communication; and a valve element rotatably disposed within the bore of each valve body, the valve element having a peripheral surface contacting the valve body, a first internal flow path having openings flush with the peripheral surface, a second internal flow path intersecting the first flow path and having an opening flush with the peripheral surface, and a channel in flow communication with the first flow path and having an opening flush with the peripheral surface and extending from one of the openings of the first flow path;
each valve element and valve body cooperating to permit fluid flow between the main conduit and a selected one of the secondary conduits by rotating the valve element to align the openings of the channel and the first and second flow paths relative to the plurality of ports, the channel and second flow path opening permitting flow through the first and second flow paths when at least a portion of the channel opening is aligned with one of the ports and at least a portion of the second flow path opening is aligned with another one of the ports.
2. The apparatus of claim 1, wherein the channel opening provides a lesser flow rate into the first flow path than the first flow path opening from which the channel extends.
3. The apparatus of claim 1, wherein the width of the channel opening in a direction parallel to a longitudinal axis of the valve element is smaller than the width of the first flow path opening from which the channel extends.
4. The apparatus of claim 1, wherein the area of the channel opening is smaller than the area of the first flow path opening from which the channel extends.
5. The apparatus of claim 1, wherein the channel comprises a slit having one of a substantially rectangular, a substantially elliptical, and a substantially triangular cross-section.
6. The apparatus of claim 1, wherein the second flow path opening is larger than the first flow path opening and is arranged on the peripheral surface of the valve element to accommodate flow through the channel.
7. The apparatus of claim 1, wherein the second flow path opening is substantially one of elliptical and ovate in shape.
8. The apparatus of claim 1, wherein the valve element includes a handle for rotating the valve element within the cylindrical bore of the valve body.
9. Apparatus for controlling the flow of fluids between a main conduit and at least one secondary conduit, comprising:
a valve body having a wall defining a cylindrical bore, the wall having a plurality of ports in respective flow communication with the main conduit and the at least one secondary conduit; and a valve element rotatably disposed within the cylindrical bore of the valve body, the valve element having a peripheral surface contacting the valve body, a first internal flow path having openings flush with the peripheral surface, a second internal flow path intersecting the first flow path and having an opening flush with the peripheral surface, and a channel in flow communication with the first flow path and having an opening flush with the peripheral surface and extending from one of the openings of the first flow path;
the valve element and valve body cooperating to permit fluid flow between the main conduit and the secondary conduit by rotating the valve element to align the openings of the channel and the first and second flow paths relative to the plurality of ports, the channel and second flow path opening permitting flow through the first and second flow paths when at least a portion of the channel opening is aligned with one of the ports and at least a portion of the second flow path opening is aligned with another one of the ports.
a valve body having a wall defining a cylindrical bore, the wall having a plurality of ports in respective flow communication with the main conduit and the at least one secondary conduit; and a valve element rotatably disposed within the cylindrical bore of the valve body, the valve element having a peripheral surface contacting the valve body, a first internal flow path having openings flush with the peripheral surface, a second internal flow path intersecting the first flow path and having an opening flush with the peripheral surface, and a channel in flow communication with the first flow path and having an opening flush with the peripheral surface and extending from one of the openings of the first flow path;
the valve element and valve body cooperating to permit fluid flow between the main conduit and the secondary conduit by rotating the valve element to align the openings of the channel and the first and second flow paths relative to the plurality of ports, the channel and second flow path opening permitting flow through the first and second flow paths when at least a portion of the channel opening is aligned with one of the ports and at least a portion of the second flow path opening is aligned with another one of the ports.
10. The apparatus of claim 9, wherein the channel opening provides a lesser flow rate into the first flow path than the first flow path opening from which the channel extends.
11. The apparatus of claim 9, wherein the width of the channel opening in a direction parallel to a longitudinal axis of the valve element is smaller than the width of the first flow path opening from which the channel extends.
12. The apparatus of claim 9, wherein the area of the channel opening is smaller than the area of the first flow path opening from which the channel extends.
13. The apparatus of claim 9, wherein the channel comprises a slit having one of a substantially rectangular, a substantially elliptical, and a substantially triangular cross-section.
14. The apparatus of claim 9, wherein the second flow path opening is larger than the first flow path opening and is arranged on the peripheral surface of the valve element to accommodate flow through the channel.
15. The apparatus of claim 9, wherein the second flow path opening is substantially one of elliptical and ovate in shape.
16. The apparatus of claim 9, wherein the valve element includes a handle for rotating the valve element within the cylindrical bore of the valve body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39449695A | 1995-02-27 | 1995-02-27 | |
| US08/394,496 | 1995-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2212636A1 true CA2212636A1 (en) | 1996-09-06 |
Family
ID=23559207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002212636A Abandoned CA2212636A1 (en) | 1995-02-27 | 1996-02-15 | Apparatus for controlling flow of biological/medical fluids to and from a patient |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5817068A (en) |
| EP (1) | EP0812221B1 (en) |
| AU (1) | AU4869496A (en) |
| CA (1) | CA2212636A1 (en) |
| DE (1) | DE69603456T2 (en) |
| HK (1) | HK1004377A1 (en) |
| WO (1) | WO1996026760A1 (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779204B1 (en) * | 1998-05-28 | 2000-08-18 | Vygon | MULTIPLE COMMUNICATION CHANNEL TURN VALVE |
| CA2334136A1 (en) * | 1998-06-01 | 1999-12-09 | Wesley H. Verkaart | System for withdrawal of blood |
| US6273133B1 (en) | 1999-10-15 | 2001-08-14 | Baxter International Inc. | Fluid flow rate switching device |
| US7094216B2 (en) | 2000-10-18 | 2006-08-22 | Medrad, Inc. | Injection system having a pressure isolation mechanism and/or a handheld controller |
| EP2092950A3 (en) | 2001-11-14 | 2009-09-02 | JMS Co., Ltd. | Three-way stopcock, and liquid transfusion tubing set or blood transfusion tubing set using the three-way stopcock |
| US7326188B1 (en) * | 2002-08-02 | 2008-02-05 | Elcam Medical | Anesthesia manifold and induction valve |
| US7921874B2 (en) * | 2004-11-12 | 2011-04-12 | Cook Medical Technologies Llc | Flow variation valve assembly |
| US9433730B2 (en) | 2013-03-14 | 2016-09-06 | Bayer Healthcare Llc | Fluid mixing control device for a multi-fluid delivery system |
| US9011377B2 (en) | 2008-11-05 | 2015-04-21 | Bayer Medical Care Inc. | Fluid mixing control device for a multi-fluid delivery system |
| US7766883B2 (en) * | 2007-10-30 | 2010-08-03 | Medrad, Inc. | System and method for proportional mixing and continuous delivery of fluids |
| US20070119508A1 (en) * | 2005-11-29 | 2007-05-31 | West Richard L | Fluid Flow Diversion Valve and Blood Collection System Employing Same |
| US7615037B2 (en) | 2005-12-14 | 2009-11-10 | Stryker Corporation | Removable inlet manifold for a medical/surgical waste collection system, the manifold including a driver for actuating a valve integral with the waste collection system |
| US7975721B2 (en) * | 2006-03-30 | 2011-07-12 | John Hiebert | Fluid valve systems |
| US7690396B2 (en) * | 2006-07-20 | 2010-04-06 | Baxter International Inc. | Multirate tubing flow restrictor |
| US20090171279A1 (en) * | 2007-12-26 | 2009-07-02 | Cook Incorporated | Balloon catheter assembly and controller therefor |
| US8070730B2 (en) * | 2009-03-27 | 2011-12-06 | Tyco Healthcare Group Lp | Integral insufflation valve |
| CN102575783B (en) * | 2009-07-20 | 2014-07-30 | 戴维·R·邓肯 | Multi-port stopcock valve and flow designating system |
| JP2014527881A (en) | 2011-09-21 | 2014-10-23 | ベイヤー メディカル ケア インク． | Continuous multi-fluid pump device, drive and actuation system and method |
| AU2014364218B2 (en) | 2013-12-11 | 2019-06-06 | Icu Medical, Inc. | Check valve |
| USD793551S1 (en) | 2014-12-03 | 2017-08-01 | Icu Medical, Inc. | Fluid manifold |
| USD786427S1 (en) | 2014-12-03 | 2017-05-09 | Icu Medical, Inc. | Fluid manifold |
| RU2714926C2 (en) | 2015-01-09 | 2020-02-21 | БАЙЕР ХелсКер ЛЛСи | Multiple fluid delivery system with multi-use disposable set and features thereof |
| KR102630666B1 (en) * | 2017-06-22 | 2024-01-29 | 엘캠 메디컬 애그리컬처럴 코오퍼레이티브 어소시에이션 리미티드 | Closed stopcock |
| EP3890820A1 (en) * | 2018-12-07 | 2021-10-13 | Fresenius Medical Care Holdings, Inc. | Rotary valves for managing fluid flows in medical systems |
| US11318242B2 (en) | 2019-04-12 | 2022-05-03 | Stryker Corporation | Manifold for a medical waste collection system |
| US10471188B1 (en) | 2019-04-12 | 2019-11-12 | Stryker Corporation | Manifold for filtering medical waste being drawn under vacuum into a medical waste collection system |
| USD996640S1 (en) | 2019-11-11 | 2023-08-22 | Stryker Corporation | Specimen collection tray |
| USD919799S1 (en) | 2019-11-11 | 2021-05-18 | Stryker Corporation | Manifold housing for a medical waste collection device |
| USD956967S1 (en) | 2019-11-11 | 2022-07-05 | Stryker Corporation | Manifold housing for a medical waste collection device |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1313105A (en) * | 1919-08-12 | Faucet | ||
| US926774A (en) * | 1908-05-16 | 1909-07-06 | Carl Schmidt | Self-closing gas-fixture. |
| GB465222A (en) * | 1936-03-11 | 1937-05-04 | Salvador Criscuolo Messina | Improvements in fluid mixing cocks |
| US2538215A (en) * | 1947-03-04 | 1951-01-16 | Mary E Stack | Enema apparatus |
| US3115896A (en) * | 1960-11-02 | 1963-12-31 | Sylvia V Roberts | Water temperature selector valve |
| US3166097A (en) * | 1961-11-17 | 1965-01-19 | Price Pfister Brass Mfg | Shear seal valve |
| US3477469A (en) * | 1967-04-25 | 1969-11-11 | Hyman W Paley | Manifold assembly |
| US3591129A (en) * | 1969-01-27 | 1971-07-06 | Eldon E Hulsey | Ball-type valve |
| US3654962A (en) * | 1969-10-03 | 1972-04-11 | Otis Eng Co | Valves |
| JPS5241486B1 (en) * | 1969-12-29 | 1977-10-19 | ||
| DE2038085A1 (en) * | 1970-07-31 | 1972-02-10 | Centra Buerkle Kg Albert | Three-way mixer tap |
| US3957082A (en) * | 1974-09-26 | 1976-05-18 | Arbrook, Inc. | Six-way stopcock |
| US4146055A (en) * | 1977-03-21 | 1979-03-27 | Ryder International Corporation | Valve structure |
| US4165763A (en) * | 1977-06-06 | 1979-08-28 | Cummins Engine Company, Inc. | Valve construction |
| US4219021A (en) * | 1978-02-27 | 1980-08-26 | Fink Joseph L | Multi-position stop-cock valve for intravenous administration of multiple medications |
| US4447236A (en) * | 1982-02-05 | 1984-05-08 | Cordis Corporation | Infusion catheter system |
| US4505301A (en) * | 1982-03-09 | 1985-03-19 | Yang Tai Her | Liquid mixing valve |
| US4651775A (en) * | 1985-09-05 | 1987-03-24 | Tesco, Inc. | Three-way ball valve |
| US4667927A (en) * | 1985-11-08 | 1987-05-26 | Rao Medical Devices, Inc. | Liquid flow metering device |
| US4903897A (en) * | 1988-08-12 | 1990-02-27 | L. R. Nelson Corporation | Turret nozzle with ball valve flow adjustment |
| US4928920A (en) * | 1989-05-18 | 1990-05-29 | Laminar Fluid Controls, Inc. | Finely-adjustable flow control valve |
| IT1235656B (en) * | 1989-07-11 | 1992-09-18 | Galatron Srl | Water milking valve |
| IT1254821B (en) * | 1992-02-28 | 1995-10-11 | Mario Giacomini | BALL VALVE |
| US5277248A (en) * | 1992-05-19 | 1994-01-11 | B And E Manufacturing & Supply Co. | Ball valve type injector and catcher apparatus with adjustable flow control for catching and retrieving paraffin cutting balls |
-
1996
- 1996-02-15 AU AU48694/96A patent/AU4869496A/en not_active Abandoned
- 1996-02-15 EP EP96904653A patent/EP0812221B1/en not_active Expired - Lifetime
- 1996-02-15 WO PCT/US1996/002327 patent/WO1996026760A1/en active IP Right Grant
- 1996-02-15 CA CA002212636A patent/CA2212636A1/en not_active Abandoned
- 1996-02-15 DE DE69603456T patent/DE69603456T2/en not_active Expired - Fee Related
-
1997
- 1997-01-16 US US08/784,314 patent/US5817068A/en not_active Expired - Fee Related
-
1998
- 1998-05-04 HK HK98103764A patent/HK1004377A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE69603456D1 (en) | 1999-09-02 |
| AU4869496A (en) | 1996-09-18 |
| US5817068A (en) | 1998-10-06 |
| HK1004377A1 (en) | 1998-11-27 |
| EP0812221B1 (en) | 1999-07-28 |
| EP0812221A1 (en) | 1997-12-17 |
| DE69603456T2 (en) | 2000-04-13 |
| WO1996026760A1 (en) | 1996-09-06 |
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Legal Events
| Date | Code | Title | Description |
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| FZDE | Dead |