US3783900A - Stop cock - Google Patents

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Publication number
US3783900A
US3783900A US3783900DA US3783900A US 3783900 A US3783900 A US 3783900A US 3783900D A US3783900D A US 3783900DA US 3783900 A US3783900 A US 3783900A
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Prior art keywords
plug
ports
valve
body
element
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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.)
Expired - Lifetime
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C Waldbillig
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Medex Inc
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Medex Inc
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08Multiple-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
    • F16K11/085Multiple-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
    • F16K11/0853Multiple-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
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00Valves and valve actuation
    • Y10S251/904Snap fit plug valves
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86863Rotary valve unit
    • Y10T137/86871Plug

Abstract

A stop cock comprising a cup-shaped body having three ports and associated spigots formed at right angles to one another, and a plug disposed in the body and sealed thereto above said ports. The plug has a downwardly depending, generally cylindrical wall which defines a recess in the bottom of the plug, the wall being slotted to provide openings alignable with the ports. A stiffening element is inserted in the recess to provide assurance of sufficient radially outward pressure of said walls against the internal surface of said body to seal off said ports when the plug is rotated to a sealing position.

Description

[ Jan. 8, 1974 STOP COCK [75] Inventor: Charles C. Waldbillig, Columbus,

Ohio

[73] Assignee: Medex, Inc., Hilliard, Ohio [22] Filed: June 5, 1972 [21] Appl. No.: 259,945

[52] US. Cl. l37/625.47, 251/309 7/1972 Leibinsohn l37/625.47 1/1973 Gore et al 137/62S.47

Primary Examiner-Samuel Scott Attorne yJames S. Hight et al.

571 ABSTRACT A stop cock comprising a cup-shaped body having three ports and associated spigots formed at right angles to one another, and a plug disposed in the body [22 2] ii lltidclkns. andSeale-d thereto above Said ports. The plug has a l f f g j 31 3 l 1 downwardly depending, generally cylindrical wall which defines a recess in the bottom of the plug, the wall being slotted to provide openings alignable with [56] References Clted l the ports. A stiffening element is inserted in the recess UNITED STATES PATENTS to provide assurance of sufficient radially outward 3,185,179 5/1965 Harautuneian 137/625.47 pressure of said walls against the internal surface of 3,481,367 12/1969 Deuschle 137/62547 said body to seal off said ports when the plug is ro- Murphy, J1. X tated to a ealing position 3,305,211 2/1967 Phillips l37/625.47 X 3,525,363 8/1970 Gore et al 137/62547 5 Claims, 7- Drawing Figures 4fi d/ .i i4 2/ Z4 STOP COCK This invention relates to a stop cock or medical valve of the type employed for intravenous injection of drugs and solutions for medical and surgical uses. The present invention provides improved features over the medical valve disclosed in U.S. Pat. No. 3,276,472.

The valve of U. 8. Pat. No. 3,276,472 includes a cupshaped body and a plug rotatably mounted in the body. The cup has three ports and associated spigots by which sources of fluid and a hypodermic needle are attached to the valve with the plug controlling the flow of fluids to the hypodermic needle. The plug has a recess which extends almost to the bottom of the plug and has slots in the side walls of the plug, the slots being alignable with the ports to permit the flow of fluid down through the slots and along the bottom of the body. The deep recess, with its bottom wall extending across the plug, provides a firm sealing engagement of the walls of the plug with the interior surface of the body so as to enable the passage of fluids to be securely blocked when the plug is rotated to a sealing position.

An objective of the present invention has been to provide a valve of the type described above with provision for utilizing the valve for the application of an indwelling catheter connected directly to the valve. An in-dwelling catheter consists of a thin tube and a trocar (thin needle) slidable in the tube, the sharpened end of the trocar initially projecting from the end of the tube. In preparing the patient for the in-dwelling catheter, the combined tube and trocar are injected into the vein of the patient with the trocar forming an initial puncture through the skin and vein of the patient, thereby permitting the thin tube to follow the trocar and project into the vein of the patient. Thereafter, the trocar is removed, leaving the thin tube. This system, utilizing a thin tube, has advantages over the use of a hypodermic needle, for a needle, if. left in the limb of a patient, could cause injury to the patient through the movement of the patient or valve causing the sharp needle to make inadvertent punctures or scratches on the wall of the vein.

In accordance with the present invention, the thin tube is directly mountable to one of the spigots of the valve and the trocar is adapted to pass through the body of the valve through the thin tube during the time of injecting the catheter into the patients limb. There after, the trocar is removed and sources of fluid are connected to one or both of the remaining spigots.

It has been another objective of the present invention to provide a plug for a valve of the type described above in which the plug has a downwardly depending, generally cylindrical wall having openings in it alignable with the ports in the body for the passage of fluid. The walls define a deep recess in the body of the plug which permits the passage of a trocar between diametrically opposed ports and through the body and plug.

The need for the deep recess gives rise to a problem of slight radial inward deflection, under applied fluid pressure, of the walls which define the recess. In order to create a suitable sealing relationship between the plug walls and the internal surface of the body, the invention provides a stiffening element located in the bottom of the plug. The stiffening element preferably consists of a disc having an outside diameter equal to that of the inside diameter of the plug recess and a projection extending between the disc and the upper end of the recess to block upward movement of the disc which would tend to occlude the passageway between the opposed ports. The stiffening element further includes means for locating the angular position of the disc with respect to the plug so as to be sure that the projections are out of a line between the opposed ports when the opposed ports are interconnected by the plug.

The several features and objectives of the invention will become more readily apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a diagrammatic perspective view illustrating the application of the invention in an in-dwelling catheter situation;

FIG. 2 is a disassembled perspective view of the invention;

FIG. 3 is a cross-sectional view through the center of the invention;

FIG. 4 is a cross-sectional view taken along lines 4--4 of FIG. 3; and

FIGS. 5, 6 and 7 are plan views of alternative forms of stiffening elements.

Referring to FIG. 1, a stop cock 10 is shown interconnecting a thin catheter tube 11 to a hypodermic syringe 12 and a tube 13 connected to a source 14 of an intravenous solution such as glucose.

Referring to FIGS. 2, 3 and 4, the valve 10 includes a body 16, a plug 17 rotatably mounted in the body, and a stiffening element 18. The body is cup-shaped and has three ports 20, 21 and 22 and spigots 23, 24 and 25 associated with respective ports.

The body has an internal surface 26 which is generally cylindrical and mates with, in a tight fitting relation, a cylindrical surface 27 of the plug 17. The upper end of the surface 26 of the body has an annular groove 28 which receives a sealing ring 29 at the upper end of the surface 27 of the plug.

The plug has a generally cylindrical, downwardly depending wall 31 defining a recess 32 having an upper end 33. The wall 31 has three slots 35, 36 and 37 which are alignable with respective ports 20, 21 and 22 to permit communication of the ports with each other for the flow of fluid.

The plug further includes a handle 40 and pointers 41 all located exteriorly of the body. The pointers 41 are aligned with the respective slots 35-37 to indicate the angular position of the slots in relation to the spigots, thereby advising the operator of the condition of the valve insofar as sealing off ports and interconnection of ports is concerned.

The stiffening element includes a disc 45 and four projections 46 which extend between the disc and the upper end 33 of the recess, thereby locating the disc at the open end of the recess. The disc has two laterally projecting tabs 47 which are slidably received in the opposed slots 35 and 37, locating angularly located the disc in the recess. The angular locating of the disc in the recess provides assurance that the projections 46 will be out of line with the ports 20 and 21 when the plug is rotated to bring those ports into communication with one another, as shown, for example, in FIG. 4.

The particular configuration of the stiffening element 18 is subject to variation without departing from the invention. For example, a stiffening element 50 is shown in FIG. 5 which consists of a generally cylindrical member whose height is substantially equal to the depth of the recess 32, the element having a T-shaped slot 51 which defines the projections and which permits the required flow of fluid and passageway for the introduction of a trocar.

A similarly formed stiffening element 53 is shown in FIG. 6, the element 53 having a cruciform slot 54 which defines the projections.

The stiffening element 56 of FIG. 7 is employed in an application where there is no requirement for the introduction of a trocar. The element 56 has a disc 57 and a simple centrally located projection 58 extending between the disc 57 and the upper end of the recess 32. No locating tabs are required in the embodiment of FIG. 7. i

In the use of the invention of the embodiments of FIGS. 1-6, the medical valve with a thin tube 11 attached to it and a trocar extending through the valve with its tip projecting from the end of the thin tube is placed on the patients arm. Preferably, the plug is rotated to the orientation illustrated in FIG. 4 wherein the port 22 is sealed off and the ports 20, 21 are interconnected so as to permit the trocar to pass through the valve. Further, it is preferable to have the spigot 24 opposite the spigot 23 carrying the thin tube preliminarily sealed off by a cap of the type normally closing a bottle of fluid from which the doctor f lls a hypodermic syringe. Such a cap is puncturable by the trocar and reseals itself when the trocar is removed to prevent the escape of blood from the valve during the period between the removal of the trocar and the rotation of the plug to a sealing orientation.

The trocar and tube are introduced into the patients vein and the trocar is thereafter removed. The valve is rotated about one-eighth of a turn to seal all ports. The sources of respective fluids are then connected to the remaining spigots 24 and 25, after first removing the cap from the spigot 24. Thereafter the plug is rotated to align the desired ports 21 and 22 with the port 20 or to seal off the ports as required.

In the operation, the stiffening element 18 braces the wall 31 against radial inward movement, thereby providing assurance of good sealing engagement of the wall with the internal surface 26 of the body 16. Additionally, the element 18 minimizes the residual fluid of one source in the body 16 when the valve is changed to connect another source to the tube 1 1.

I claim:

1. A medical valve comprising,

a generally cylindrical cup-shaped body having at least two diametrically opposed ports in the lower portion thereof,

a plug rotatably mounted in said body,

cooperating means on said plug and body respectively for forming a liquid-tight seal above said ports,

the lower portion of said plug being formed by a generally cylindrical wall which defines a recess extending above said port locations,

said wall having openings alignable with said ports to permit liquid to pass through said valve,

and a stiffening element snugly fitting in said recess below said port locations to provide radially outward pressure of said wall against said body to seal said ports.

2. A valve as in claim 1 in which said stiffening element comprises a disc disposed at the bottom of said Plug,

and at least one projection extending between said disc and the upper end of said recess.

3. A valve as in claim 1 further comprising,

positioning means extending between said stiffening element and the upper end of said recess, said positioning means being out of a line between said openings in said plug walls.

4. A valve as in claim 3 in which the openings in said valve are formed by slots extending from the bottom of said plug to the top of said ports.

5. A valve as in claim 4 in which said stiffening element has at least one laterally projecting locator tab disposed in at least one of said slots to block rotation of said element with respect to said plug.

' UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION 3,783,900 Dated \January 8, 1974 Charles C. Waldbillig Patent No.

Inventor(s) It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 2, line 56, change "locating angularly located" to thereby angularly locating Signed and Sealed this 3 y of pril 197a.

(SEAL) Attest: a a

EDWARD TLFLETCHERJR. 0. MARSHALL DAI-Tifi Commissioner of Patentsv Attesting Officer QRM PC4050 0-69)

Claims (5)

1. A medical valve comprising, a generally cylindrical cup-shaped body having at least two diametrically opposed ports in the lower portion thereof, a plug rotatably mounted in said body, cooperating means on said plug and body respectively for forming a liquid-tight seal above said ports, the lower portion of said plug being formed by a generally cylindrical wall which defines a recess extending above said port locations, said wall having openings alignable with said ports to permit liquid to pass through said valve, and a stiffening element snugly fitting in said recess below said port locations to provide radially outward pressure of said wall against said body to seal said ports.
2. A valve as in claim 1 in which said stiffening element comprises a disc disposed at the bottom of said plug, and at least one projection extending between said disc and the upper end of said recess.
3. A valve as in claim 1 further comprising, positioning means extending between said stiffening element and the upper end of said recess, said positioning means being out of a line between said openings in said plug walls.
4. A valve as in claim 3 in which the openings in said valve are formed by slots extending from the bottom of said plug to the top of said ports.
5. A valve as in claim 4 in which said stiffening element has at least one laterally projecting locator tab disposed in at least one of said slots to block rotation of said element with respect to said plug.
US3783900A 1972-06-05 1972-06-05 Stop cock Expired - Lifetime US3783900A (en)

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Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945603A (en) * 1975-04-17 1976-03-23 Fts Systems Inc. Valve particularly adapted for use in vacuum work
US4217925A (en) * 1978-09-22 1980-08-19 Bob Clark Gasoline line lock
US4219021A (en) * 1978-02-27 1980-08-26 Fink Joseph L Multi-position stop-cock valve for intravenous administration of multiple medications
FR2472125A1 (en) * 1979-12-14 1981-06-26 Winter Oy Machine, in particular for metering devices in paints shading machines
US4277046A (en) * 1978-09-25 1981-07-07 Cavileer Watson V Irrigation valve
US4314586A (en) * 1978-08-30 1982-02-09 Tronomed International, Inc. Disposable valve
WO1984001805A1 (en) * 1982-11-01 1984-05-10 Allan M Parham Medical stopcock valve assembly
US4604093A (en) * 1984-06-12 1986-08-05 I-Flow Corporation Apparatus and method for administering multiple fluid infusions
US4738265A (en) * 1987-03-30 1988-04-19 Baxter Travenol Laboratories, Inc. Dual stop cock
EP0213620A3 (en) * 1985-08-30 1988-06-01 Terumo Kabushiki Kaisha Trading As Terumo Corporation Pressure transducer apparatus
US4784156A (en) * 1987-09-16 1988-11-15 Garg Rakesh K Cannula including a valve structure and associated instrument elements and method for using same
US4832044A (en) * 1987-09-16 1989-05-23 Garg Rakesh K Cannula including a valve structure and associated instrument elements
US4840184A (en) * 1987-09-16 1989-06-20 Garg Rakesh K Second method for using cannula including a valve structure and associated instrument elements
US4844087A (en) * 1987-09-16 1989-07-04 Garg Rakesh K First method for using cannula including a valve structure and associated instrument element
US5005604A (en) * 1984-07-13 1991-04-09 Aslanian Jerry L Flow control device for administration of intravenous fluids
US5076540A (en) * 1990-05-14 1991-12-31 Brass-Craft Manufacturing Company Stop valve
US5203769A (en) * 1989-11-06 1993-04-20 Mectra Labs, Inc. Medical device valving mechanism
US5250065A (en) * 1990-09-11 1993-10-05 Mectra Labs, Inc. Disposable lavage tip assembly
US5256160A (en) * 1989-11-06 1993-10-26 Mectra Labs, Inc. Medical device valving mechanism
US5288290A (en) * 1991-09-25 1994-02-22 Alcon Surgical, Inc. Multi-ported valve assembly
US5306237A (en) * 1989-11-06 1994-04-26 Mectra Labs, Inc. Disposable lavage
US5338292A (en) * 1989-11-06 1994-08-16 Mectra Labs, Inc. Disposable lavage with instrument shield
US5403290A (en) * 1992-04-20 1995-04-04 Noble; Lisa W. Gastric adapter/stopcock
US5409013A (en) * 1989-11-06 1995-04-25 Mectra Labs, Inc. Tissue removal assembly
US5505210A (en) * 1989-11-06 1996-04-09 Mectra Labs, Inc. Lavage with tissue cutting cannula
US5522430A (en) * 1994-11-15 1996-06-04 Mittersteiner Urzua; Melchor J. Flow valve or shut-off cock for flow networks with sealing means
US5527332A (en) * 1994-11-02 1996-06-18 Mectra Labs, Inc. Tissue cutter for surgery
US5797907A (en) * 1989-11-06 1998-08-25 Mectra Labs, Inc. Electrocautery cutter
US5832959A (en) * 1995-10-16 1998-11-10 Becton Dickinson Infusion Therapy Ab Stopcocks
US5865812A (en) * 1995-09-27 1999-02-02 United States Surgical Corporation Fluid flow control apparatus for surgical cannulae
US6193672B1 (en) 1993-05-11 2001-02-27 Mectra Labs, Inc. Lavage
EP1138990A3 (en) * 2000-03-28 2002-10-09 B. Braun Melsungen AG Multiple way cock
FR2845452A1 (en) * 2002-10-04 2004-04-09 Vygon Robinet indexable rotating key.
US20060005886A1 (en) * 2002-09-06 2006-01-12 Andrea Parrino Multiway wave
US20110011474A1 (en) * 2009-07-20 2011-01-20 Duncan David R Multi-port stopcock valve and flow designating system
US20120152393A1 (en) * 2010-12-17 2012-06-21 Connect Sales Inc. Frost-Free Vent Assembly
CN106439107A (en) * 2016-10-31 2017-02-22 北京派特生物技术有限公司 Corrosion-resistant plug valve, control device and system for radioactive medicine synthesis
EP2454506B1 (en) 2009-07-14 2017-03-29 Fresenius Kabi Deutschland GmbH Multi-way valve and method for producing the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048192A (en) * 1957-08-14 1962-08-07 Cordis Corp Surgical valve
US3185179A (en) * 1961-05-05 1965-05-25 Pharmaseal Lab Disposable valve
US3305211A (en) * 1965-03-09 1967-02-21 Edwin D Phillips Stressed plastic valve for laboratory glassware
US3481367A (en) * 1967-06-13 1969-12-02 Brunswick Corp Three-way stopcock
US3525363A (en) * 1968-08-02 1970-08-25 Chicago Specialty Mfg Co Means for controlling the direction of the flow of a liquid or fluid through a selected outlet
US3678960A (en) * 1970-06-08 1972-07-25 Saul Leibinsohn Stop cock
US3709256A (en) * 1971-02-08 1973-01-09 Beatrice Foods Co Means for controlling the direction of the flow of a liquid or fluid through a selected outlet and for sealing said outlets

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048192A (en) * 1957-08-14 1962-08-07 Cordis Corp Surgical valve
US3185179A (en) * 1961-05-05 1965-05-25 Pharmaseal Lab Disposable valve
US3305211A (en) * 1965-03-09 1967-02-21 Edwin D Phillips Stressed plastic valve for laboratory glassware
US3481367A (en) * 1967-06-13 1969-12-02 Brunswick Corp Three-way stopcock
US3525363A (en) * 1968-08-02 1970-08-25 Chicago Specialty Mfg Co Means for controlling the direction of the flow of a liquid or fluid through a selected outlet
US3678960A (en) * 1970-06-08 1972-07-25 Saul Leibinsohn Stop cock
US3709256A (en) * 1971-02-08 1973-01-09 Beatrice Foods Co Means for controlling the direction of the flow of a liquid or fluid through a selected outlet and for sealing said outlets

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945603A (en) * 1975-04-17 1976-03-23 Fts Systems Inc. Valve particularly adapted for use in vacuum work
US4219021A (en) * 1978-02-27 1980-08-26 Fink Joseph L Multi-position stop-cock valve for intravenous administration of multiple medications
US4314586A (en) * 1978-08-30 1982-02-09 Tronomed International, Inc. Disposable valve
US4217925A (en) * 1978-09-22 1980-08-19 Bob Clark Gasoline line lock
US4277046A (en) * 1978-09-25 1981-07-07 Cavileer Watson V Irrigation valve
FR2472125A1 (en) * 1979-12-14 1981-06-26 Winter Oy Machine, in particular for metering devices in paints shading machines
WO1984001805A1 (en) * 1982-11-01 1984-05-10 Allan M Parham Medical stopcock valve assembly
US4604093A (en) * 1984-06-12 1986-08-05 I-Flow Corporation Apparatus and method for administering multiple fluid infusions
US5005604A (en) * 1984-07-13 1991-04-09 Aslanian Jerry L Flow control device for administration of intravenous fluids
EP0213620A3 (en) * 1985-08-30 1988-06-01 Terumo Kabushiki Kaisha Trading As Terumo Corporation Pressure transducer apparatus
US4738265A (en) * 1987-03-30 1988-04-19 Baxter Travenol Laboratories, Inc. Dual stop cock
US4784156A (en) * 1987-09-16 1988-11-15 Garg Rakesh K Cannula including a valve structure and associated instrument elements and method for using same
US4832044A (en) * 1987-09-16 1989-05-23 Garg Rakesh K Cannula including a valve structure and associated instrument elements
US4840184A (en) * 1987-09-16 1989-06-20 Garg Rakesh K Second method for using cannula including a valve structure and associated instrument elements
US4844087A (en) * 1987-09-16 1989-07-04 Garg Rakesh K First method for using cannula including a valve structure and associated instrument element
US5374244A (en) * 1989-11-06 1994-12-20 Mectra Labs, Inc. Disposable lavage
US5203769A (en) * 1989-11-06 1993-04-20 Mectra Labs, Inc. Medical device valving mechanism
US5505210A (en) * 1989-11-06 1996-04-09 Mectra Labs, Inc. Lavage with tissue cutting cannula
US5256160A (en) * 1989-11-06 1993-10-26 Mectra Labs, Inc. Medical device valving mechanism
US5797907A (en) * 1989-11-06 1998-08-25 Mectra Labs, Inc. Electrocautery cutter
US5306237A (en) * 1989-11-06 1994-04-26 Mectra Labs, Inc. Disposable lavage
US5338292A (en) * 1989-11-06 1994-08-16 Mectra Labs, Inc. Disposable lavage with instrument shield
US5409013A (en) * 1989-11-06 1995-04-25 Mectra Labs, Inc. Tissue removal assembly
US5076540A (en) * 1990-05-14 1991-12-31 Brass-Craft Manufacturing Company Stop valve
US5250065A (en) * 1990-09-11 1993-10-05 Mectra Labs, Inc. Disposable lavage tip assembly
US5288290A (en) * 1991-09-25 1994-02-22 Alcon Surgical, Inc. Multi-ported valve assembly
US5403290A (en) * 1992-04-20 1995-04-04 Noble; Lisa W. Gastric adapter/stopcock
US6193672B1 (en) 1993-05-11 2001-02-27 Mectra Labs, Inc. Lavage
US5527332A (en) * 1994-11-02 1996-06-18 Mectra Labs, Inc. Tissue cutter for surgery
US5522430A (en) * 1994-11-15 1996-06-04 Mittersteiner Urzua; Melchor J. Flow valve or shut-off cock for flow networks with sealing means
US5865812A (en) * 1995-09-27 1999-02-02 United States Surgical Corporation Fluid flow control apparatus for surgical cannulae
US5832959A (en) * 1995-10-16 1998-11-10 Becton Dickinson Infusion Therapy Ab Stopcocks
EP1138990A3 (en) * 2000-03-28 2002-10-09 B. Braun Melsungen AG Multiple way cock
US6536742B2 (en) 2000-03-28 2003-03-25 B. Braun Melsungen Ag Multi-way cock
US7469716B2 (en) 2002-09-06 2008-12-30 Gambro Lundia Ab Multiway valve
US20060005886A1 (en) * 2002-09-06 2006-01-12 Andrea Parrino Multiway wave
FR2845452A1 (en) * 2002-10-04 2004-04-09 Vygon Robinet indexable rotating key.
US20060033066A1 (en) * 2002-10-04 2006-02-16 Vygon Cock comprising indexable rotating key
US7152845B2 (en) * 2002-10-04 2006-12-26 Vygon Cock comprising indexable rotating key
WO2004031635A1 (en) * 2002-10-04 2004-04-15 Vygon Cock comprising indexable rotating key
EP2454506B1 (en) 2009-07-14 2017-03-29 Fresenius Kabi Deutschland GmbH Multi-way valve and method for producing the same
US20110011474A1 (en) * 2009-07-20 2011-01-20 Duncan David R Multi-port stopcock valve and flow designating system
US8584701B2 (en) * 2009-07-20 2013-11-19 David R. Duncan Multi-port stopcock valve and flow designating system
US20140076431A1 (en) * 2009-07-20 2014-03-20 David R. Duncan Multi-port stopcock valve and flow designating system
US9212762B2 (en) * 2009-07-20 2015-12-15 David R. Duncan Multi-port stopcock valve and flow designating system
US8574045B2 (en) * 2010-12-17 2013-11-05 Dina Warner Frost-free vent assembly
US20120152393A1 (en) * 2010-12-17 2012-06-21 Connect Sales Inc. Frost-Free Vent Assembly
CN106439107A (en) * 2016-10-31 2017-02-22 北京派特生物技术有限公司 Corrosion-resistant plug valve, control device and system for radioactive medicine synthesis

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