US3525357A - Pump valve apparatus - Google Patents

Pump valve apparatus Download PDF

Info

Publication number
US3525357A
US3525357A US3525357DA US3525357A US 3525357 A US3525357 A US 3525357A US 3525357D A US3525357D A US 3525357DA US 3525357 A US3525357 A US 3525357A
Authority
US
United States
Prior art keywords
valve
slit
portion
direction
line
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.)
Expired - Lifetime
Application number
Inventor
William R Koreski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WATERS CO
Original Assignee
WATERS CO
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WATERS CO filed Critical WATERS CO
Priority to US77634568A priority Critical
Application granted granted Critical
Publication of US3525357A publication Critical patent/US3525357A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • 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
    • F16K15/00Check valves
    • F16K15/14Check valves with flexible valve members
    • F16K15/144Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • F16K15/147Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/08Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/1037Flap valves
    • F04B53/1047Flap valves the valve being formed by one or more flexible elements
    • F04B53/1057Flap valves the valve being formed by one or more flexible elements the valve being a tube, e.g. normally closed at one end
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/1037Pumps having flexible elements, e.g. with membranes, diaphragms, or bladder pumps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/1037Pumps having flexible elements, e.g. with membranes, diaphragms, or bladder pumps
    • A61M1/1046Drive systems therefor, e.g. mechanically, electromechanically or skeletal muscle drive means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/1087Active valves for blood pumps or artificial hearts, i.e. using an external force for actuating the valve
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/1096Passive valves for blood pumps or artificial hearts, i.e. valves actuated by the fluid
    • 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
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7838Plural
    • Y10T137/7839Dividing and recombining in a single flow path
    • Y10T137/784Integral resilient member forms plural 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
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7859Single head, plural ports in parallel
    • 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
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7879Resilient material valve
    • Y10T137/788Having expansible port
    • Y10T137/7882Having exit lip
    • Y10T137/7885Multiple slit
    • 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
    • Y10T137/877With flow control means for branched passages

Description

United States Patent [72] lnve ntor William R. Koreski Rochester, Minnesota [21] Appl. No. 776,345

[22] Filed Nov. 18, 1968 [45] Patented Aug. 25, 1970 [73] Assignee The Waters Company Rochester, Minnesota a corporation of Minnesota [54] PUMP VALVE APPARATUS 13 Claims, 7 Drawing Figs.

[52] U.S.Cl ..l37/5l6.11, 137/525.137/608.251/7 [51] lnt.Cl Fl6k 15/14 [50] Field ofSearch ..l37/516.l1. 516.13,516.15,525; 251/7 [56] References Cited UNITED STATES PATENTS 603,941 5/1898 Cartwright 137/525X 700,403 5/1902 Block 137/525X Primary Examiner- Samuel Scott Attorney-Dugger, Peterson, Johnson and Westman ABSTRACT: Pump valve apparatus including a pump for cyclically forcing liquid through lines and tricuspid type valves mounted in the lines for restricting flow through a line in one direction. Each valve is made of flexible plastic material and has a somewhat conical section extending forwardly of the tubular section in the direction of desired flow. Each conical section has a plurality of circumferentially spaced slits elongated in a direction toward the tip and an interior thickened portion adjacent each slit to provide a sturdy base against which the thin wall portion that in part defines the slit rests in a valve closed position.

Patented Aug. 25, 1970 3,525,357

IA 'VENTOR. Alla/0M R. konzsx/ Q 4770mm):

PUMP VALVE APPARATUS BACKGROUND OF THE INVENTION A tricuspid type valve made of a flexible plastic material and having a plurality of slits that open when fluid under pressure acts thereagainst in the desired direction of flow.

In the prior art, there has been provided a blood pump of the roller type which has a roller or rollers compressing soft tubing pushing perfusate (blood or plasma) ahead of the compressing roller. Also in the prior art there is a leaflet valve like a duck bill which is more pulsatile than the roller type pumps. but causes damage to liquids such as blood due to the flutter action of the two leaves during opening and closing. A third prior art type valving is the ball valve which has a rather large back flow or insufficiency. Problems associated with the above type pump and valves include a high hemolysis level resulting from compression oflarge surface areas and which is unacceptable for long term bypass for organs and/or whole body perfusion. vortexes and turbulence resulting from fluttering portions, high filling pressures required, and insufficiency on closing. In order to overcome problems of the above mentioned nature, this valve has been made.

SUMMARY OF THE INVENTION A tricuspid type valve of flexible plastic material having a cylindrical portion and a conical portion with interior thickened portions against which the thin wall portion that in part defines a slit rests when the valve is in a closed position. The conical portion has a plurality of slits that open when liquid is forced under pressure in one direction but closes when the back pressure is greater.

One of the objects of this invention is to provide a new and novel valve for creating a directional flow from each of three slits in a helical fashion to expend the energy present in moving blood cells far away from the valve rather than creating turbulence adjacent the valve. Another object of the invention is to provide a new and novel tricuspid type valve having a thin wall leaf portion in part defining a slit to overlap a thickened portion of the valve to insure complete closure after each pressurizing stroke urging liquid to move in the desired direction through the valve.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a profusion pump, and somewhat diagrammatically shows the connections between the pump, an oxygenator and a patient;

FIG. 2 is a fragmentary longitudinal cross sectional view illustrating the mounting of the valve of this invention in a line for conducting fluid such as blood, the valve portion of said view being generally taken along the line and in the direction of the arrows 22 of FIG. 3;

FIG. 3 is a front end view of the valve of this invention with no pressure being exerted on the valve, said view being generally taken along the line and in the direction of the arrows 33 of FIG. 2;

FIG. 4 is a back end view of the structure of FIG. 3, said view being generally taken along the line and in the direction of the arrows 44 of FIG. 2 and showing only the valve;

FIG. 5 is a front end view of the valve of this invention, said view being the same as that of FIG. 3 other than it is illustrated in a condition with pressure on the valve in the desired direction of flow;

FIG. 6 is an enlarged fragmentary view of a slitted portion in FIG. 5 to more clearly show the valve open condition; and

FIG. 7 is a cross sectional view of a valve of this invention, said view being generally taken along the line and in the direction of the arrows 7-7 of FIG. 2.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to FIG. 1, there is illustrated a profusion pump generally designated 10 having a pair of vertically spaced, adjustably positionable back up plates 11,12; a pressure plate 13 that is translatable toward and away from plate 11 for squeezing a portion of a flexible line 14 that extends between plates 11.13; and a second pressure plate 15 that is translatable toward and away from plate 12 for squeezing the portion of a flexible tube 16 which extends between plates 12,15. A driven cam 17 is eccentrically mounted on a drive shaft 18, the cam as it is being driven moving plate 13 to squeeze tube 14 while plate 15 moves away from plate 12: and plate 15 to squeeze tube 16 while plate 13 moves away from plate 11. The pump includes clamp members 19 and 20 for retaining tubes 14,16 in positions to extend between the respective pair of plates as above indicated. Since the pump is of conventional construction, it will not be further described.

One of the valves of this invention, generally designated 25. is mounted by the adjacent ends of lines 14,29 so that liquid under pressure can flow only in the direction of the arrow 31 to line 29 and thence therethrough to, for example. an oxygenator. A return line 26 is connected at one end to the oxygenator while the opposite end of line 26 and the adjacent end ofline 16 mount a valve 25 to permit liquid flow from line 26 to line 16 only in the direction ofthe arrow 32. Likewise. a third valve 25 is mounted by the opposite end of line 16 and the adjacent end of line 28 to permit liquid flow only in the direction of arrow 32. the opposite end of line 28 being connected to the patient or organ to be perfused. The return line 27 from the patient or organ and the adjacent end of line 14 mount a fourth valve 25 to permit liquid flow only in the direction of arrow 31.

The valve 25 is constructed of a flexible plastic material such as vinyl, if it is to be disposable, or silicone. An advantage of using the silicone type plastic is that the valve would have a longer life and be more acceptable for use with blood. Further the valve is self-supporting, i.e. will not collapse under its own weight when placed on a supporting surface.

The valve 25 has a circular tubular portion 35 and a somewhat conical shape section 36 that has an annular edge integrally joined to section 35 and a tipped end 36a opposite section 35 and aligned with the extension of the central axis of tubular section 35. Opening into the hollow interior of the conical section are three equally circumferentially spaced, elongated slits 37. Each slit at one end terminates rearwardly of the tip 36a and at the opposite end terminates forwardly of the juncture of the conical section with the tubular section. Other than for the above mentioned slits, the conical section is not cut or perforated. i.e. the conical section has an imperforated tipped end.

Each slit is elongated in a direction in a plane of the center axis of the valve, the conical section being at an angle to provide a slit lip portion 37a and a slit lip portion 37b. As may be noted from FIG. 7, in cross section, the edge of lip portion 370 forms an included obtuse angle with a plane that is tangential to the exterior surface at the point of intersection of the plane with said edge. Further, the edge of lip portion 3712 forms an included acute angle with said plane and abuttingly fits with the edge of lip portion 37:: when the valve is in a relaxed condition. Thus the slit edges are cut so that lip 37a serves to prevent lip 37b moving to a position radially more closely adjacent the valve central axis than lip 3711.

For each slit provided, the conical section has a thickened portion (base) 38 that is elongated in the same direction as the adjacent slit 37, is approximately the same or is slightly greater length than the adjacent slit and has a surface portion radially intermediate the central axis of the valve and the slit. The base portions 38 are equally circumferentially spaced, are predominately located offset from the respective slit in the same angular direction and are joined to lip portion 37a such as shown in the drawings. Thus, in the valve closed position the edges 36a,37a defining the slit abut; and when pressure is exerted against the valve in the direction opposite the desired direction of the flow, the base 38 serves as a rest to aid in preventing the lip portion 37b moving inwardly to a position that would permit leakage through the slit. Advantageously, the cross sectional area of the base may be greater at its rearward end than its forward end.

In using the valves ofthis invention. they are mounted in the lines with their tip end pointing in the direction that is desired to have fluid under pressure flow. Referring to FIG. 2 and assuming that the lines which the valve is mounted on are lines 29,14 the line 14 is extended into the cylindrical tubular section 35 to abut against the shoulder 35a formed in the section 35. An appropriate solvent is provided on the adjacent surfaces of tube 14 and section 35 to result in a bonding between said surfacesv On the exterior surface of the tubular section 35 that is radially opposite tube 14 there is provided a suitable solvent and the one end portion of the tube 29 extended thereover to form a bonding between the valve and line 29. Thus, the conical section is located within line 29 and is not bonded or attached to line 29.

When the pressure ofliquid exerted on both the interior and exterior surfaces of the conical section is the same. the lips 37a,37b of the slit remain in a closed condition due to the resiliency and memory of the valve material. At the time the pressure on the exterior surface of the conical section is greater than on the interior surface. lip 37b cannot move radially inwardly relative to lip 37a due to it being pressed into firmer engagement with the base 38. Further, the base serves as a reinforcing to prevent lip 37a moving inwardly. Accordingly, lips 37a,37b are forced into greater sealing engagement when the liquid pressure on the exterior surface of the conical section is greater than that on the interior surface.

When the pressure on the interior surface of the conical section is greater than that on the exterior surface (see FIG. 6). due to the resiliency of the material of which the valve is made, the lip 37b billows outwardly of lip 37a to provide a path for liquid flow through the valve. This billowing effect in part takes place due to the thickened portion 38 extending along lip 37a preventing the lip portion expanding (stretching) as much as that of lip 37b. Further, due to a provision of the thickened portions 38, the fact that the slit is elongated in a direction that the slit generally tapers toward the extension of central axis of the valve, and the lip is not cut or perforated, the liquid passing through the valve moves away therefrom in a helical fashion. Upon the pressure in the interior surface decreasing to or below that exerted on the exterior surface, the lip 37b rapidly moves to close the opening through the slit to minimize the insufficiency of the valve.

Thus in using the valve of this invention, when the pressure plate 13 moves toward plate 11 the tube 14 is squeezed whereby the liquid (blood) in a tube forces the valve at the adjacent ends of line 14, 29 to open to permit flow in the direction of the arrow 31 while the liquid under pressure acts on the valve in adjacent ends lines 14, 27 to close that valve. At the time plate 13 moves away from plate 11, the tube 14,

due to its resiliency, expands (resumes) to its rounded condition. Accordingly, the pressure on the interior surface of the valve at the adjacent ends of lines 14, 29 is below that acting against the exterior surface whereby the last mentioned valve closes. At the same time, the pressure on the exterior surface of the valve at the adjacent ends of lines 14, 27 is below that acting on the interior surface and accordingly liquid moves through this valve into line 14. Likewise, the plate 15 in moving towards and away from plate 12 causes liquid in line 16 to move through the valves at the adjacent ends of said lines in the direction of the arrow 32. While pumping with valves of this invention, the pulse wave form is essentially identical to the human normal pulse pressure curve including the dicrotic notch.

As an example of the valve of this invention and not otherwise as a limitation, the valve has been tested and will pump against 45 psi, pull 10 inches Hg and create less than 2 milligram percent of free hemoglobin per hour when operated against 100 mm of Hg pressure flowing at 1,000 cc/min. of bovine blood recirculated for a ten hour period. Additionally, the valve has been tested with flows up to 6,000 cc/minute, and a back flow or insufficiency of less than 1 cc per stroke.

Not previously mentioned is the fact that the thickness of the base (thickened portion) 38 determines the back pressure the valve may be operated against. That is, with a base of greater thickness 1, the valve may be utilized where there is higher back pressure than with a base having a smaller thickness.

lclaim:

1. A valve comprising a tubular portion having a first annular edge and a hollow generally conical portion having a second annular edge joined to said first annular edge. a tip remote from said second annular edge, and a generally conical wall extending between the tip and second annular edge. said wall having an outer surface, an inner surface. and lip portions intermediate the second annular edge and the tip defining a slit. and a thickened base joined to one lip portion to protrude into the interior of the conical section. said valve being made ofa flexible plastic material of sufficient rigidity to be self-supporting.

2. The valve of claim 1 further characterized in that it has a central axis and that said slit is elongated generally in a plane ofthe central axis.

3. The valve of claim 2 further characterized in that said conical section has lip portions defining a second and a third slit, said slits being about equally circumferentially spaced. and a base portion joined to one lip portion of each of second and third slits to protrude into the interior of the conical portion.

4. The valve of claim 3 further characterized in that each base in part underlies the lip portion of the respective slit and is of about the same length as said respective slit.

5. The valve of claim 4 further characterized in that each base is of a circumferential width and joined to the conical wall at a location predominately angularly offset from the respective slit.

6. The valve of claim 5 further characterized in that said one lip portion has a first lip edge inclined to form an angle substantially greater than with a plane tangential to the conical wall outer surface at the intersection of the last mentioned plane with said first lip edge.

7. A valve mountable in a liquid conducting line to permit liquid flow in one direction and restrict liquid flow in the op posite direction and having a generally conical section made ofa flexible plastic material of sufficient rigidity to be self-supporting, said conical section having an interior surface defining a generally conical chamber and having an annular edge, a tip remote from said annular edge and a wall extending between the annular edge and the tip, said wall having first and second wall portions defining a slit, said first wall portion having a first slit edge and the second wall portion having a second slit edge abuttable against the first slit edge to block passage of fluid through the slit, said first wall portion being of a substantially greater rigidity than the second wall portion, the first slit edge being inclined at an angle and the second slit edge being inclined at an angle substantially less than the corresponding angle of inclination of the first slit edge whereby a greater liquid pressure on the exterior surface than the interior surface will retain the slit edges in abutting relationship to block flow of liquid therebetween, and means joined to the annular edge for mounting the conical section in the line.

8. The valve of claim 7 further characterized in that said conical section has a central axis passing through the tip and that said slit is elongated predominately in a direction to intersect said axis.

9. The valve of claim 7 further characterized in that the conical section has a central axis and that the first wall portion has a thickened portion extending along at least the part of the length of the slit, protrudes into the interior of the conical section, and is closely adjacent the first slit edge to retain the first slit edge generally more closely adjacent the central axis than the second slit edge when a greater liquid pressure is exerted against the interior surface than the exterior surface.

10. The valve of claim 9 further characterized in that the conical section has a third wall portion and a fourth wall portion defining a second slit and a fifth wall portion and a sixth wall portion defining a third slit, said third and fifth wall portions being of substantially the same construction as the first wall portion, and said fourth and sixth wall portions being of substantially the same construction as the second wall portion.

11. The valve of claim further characterized in that said slits are substantially equally spaced and are elongated in the direction of taper of the conical section.

12. The valve of claim 11 further characterized in that the tip is aligned with the central axis of the conical section and is imperforated whereby a helical flow pattern is obtained in the liquid passing through the valve.

13. For mounting in the line of a perfusion pump. a valve made of flexible plastic material and having a tubular section that includes a first annular edge and a hollow tapered section that includes a second annular edge joined to said first annular edge, a tip remote from said second annular edge and the tubular section and joined to said tapered section, said tapered section having an enclosed chamber opening to said tubular section and three spaced. elongated slitted portions opening to said chamber to permit passage of perfusate through the tapered section. said slitted portions being intermediate the second annular edge and the tip and being elongated in a direction toward the tip, each slitted portion having a first slit edge and a second slit edge and a base portion for each slitted portionjoined to the tapered section adjacent the first edge of the respective slitted portion to protrude inwardly into the chamber to serve as a rest for the adjacent second slit edge to retain the adjacent first and second slit edges in abutting relationship when the liquid pressure acting against the taper section exterior of the chamber is greater than the liquid pressure in the chamber acting against the tapered section.

US3525357D 1968-11-18 1968-11-18 Pump valve apparatus Expired - Lifetime US3525357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US77634568A true 1968-11-18 1968-11-18

Publications (1)

Publication Number Publication Date
US3525357A true US3525357A (en) 1970-08-25

Family

ID=25107127

Family Applications (1)

Application Number Title Priority Date Filing Date
US3525357D Expired - Lifetime US3525357A (en) 1968-11-18 1968-11-18 Pump valve apparatus

Country Status (1)

Country Link
US (1) US3525357A (en)

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901235A (en) * 1973-05-24 1975-08-26 Kendall & Co Anti-reflux device for urinary collection bags
US3965900A (en) * 1974-10-02 1976-06-29 The Kendall Company Anti-reflux device
US4036412A (en) * 1974-03-11 1977-07-19 Loren S. Fond Elastomeric cartridge with slitted nozzle tip
US4685905A (en) * 1986-02-20 1987-08-11 Clinical Plastic Products Implantable arterial catheter, especially multidose injection catheter
US4846787A (en) * 1985-10-28 1989-07-11 Gambro Ab Apparatus for preventing back-flow of fluid in a blood filtering system
EP0325470A2 (en) * 1988-01-22 1989-07-26 Avon Polymer Products Limited Tubes for peristaltic pumps and methods of making them
US5030210A (en) * 1988-02-08 1991-07-09 Becton, Dickinson And Company Catheter valve assembly
US5117999A (en) * 1989-01-12 1992-06-02 Canzano Pasquale S Low pressure relief valve for fixed and movable systems
US5928203A (en) * 1997-10-01 1999-07-27 Boston Scientific Corporation Medical fluid infusion and aspiration
US6457613B1 (en) * 2001-01-08 2002-10-01 Eugene Ennalls Patterson Container equipped with protective seal
US20020156430A1 (en) * 2001-04-19 2002-10-24 Haarala Brett T. Catheter slit valves
US20050043703A1 (en) * 2003-08-21 2005-02-24 Greg Nordgren Slit valves for catheter tips and methods
US20050165364A1 (en) * 2004-01-22 2005-07-28 Dimatteo Kristian Valved catheter to bypass connector
US20050171489A1 (en) * 2004-01-29 2005-08-04 Karla Weaver Pressure activated safety valve with anti-adherent coating
US20050171490A1 (en) * 2004-01-29 2005-08-04 Karla Weaver Stacked membrane for pressure actuated valve
US20050171502A1 (en) * 2004-01-29 2005-08-04 Katie Daly Dual well port device
US20050171488A1 (en) * 2004-01-29 2005-08-04 Karla Weaver Pressure activated safety valve with high flow slit
US20050171510A1 (en) * 2004-01-29 2005-08-04 Dicarlo Paul Pressure actuated safety valve with spiral flow membrane
US20050283122A1 (en) * 2000-04-03 2005-12-22 Greg Nordgren Slit valves bridging between the tip and distal side wall of catheter tubes and methods
US20060184139A1 (en) * 2005-02-11 2006-08-17 Quigley Karla W Pressure activated safety valve with improved flow characteristics and durability
US20060253084A1 (en) * 2005-05-03 2006-11-09 Greg Nordgren Outdwelling slit valves and assemblies for medical liquid flow through a cannula and related methods
US20070276313A1 (en) * 2003-08-29 2007-11-29 Moorehead H R Valved Catheters Including High Flow Rate Catheters
US20080108949A1 (en) * 2006-11-08 2008-05-08 C. R. Bard, Inc. Resource information key for an insertable medical device
US20080215014A1 (en) * 2007-03-01 2008-09-04 Greg Nordgren Manually activated flow/no flow medical slit valves and related methods
US20090216216A1 (en) * 2005-04-27 2009-08-27 C. R. Bard, Inc. Methods of performing a power injection procedure
US20090259175A1 (en) * 2005-05-03 2009-10-15 Greg Nordgren Outdwelling slit valves and assemblies for medical liquid flow through a cannula and related methods
US20090292252A1 (en) * 2008-05-21 2009-11-26 Raymond Lareau Pressure Activated Valve for High Flow Rate and Pressure Venous Access Applications
US20100063451A1 (en) * 2008-09-09 2010-03-11 Jeff Gray Power Injectable Port Identification
US20100121283A1 (en) * 2008-11-13 2010-05-13 C. R. Bard, Inc. Implantable medical devices including septum-based indicators
US20100191192A1 (en) * 2009-01-28 2010-07-29 Jayanthi Prasad Three-way Valve for Power Injection in Vascular Access Devices
US20110087093A1 (en) * 2009-10-09 2011-04-14 Navilyst Medical, Inc. Valve configurations for implantable medical devices
US20110118612A1 (en) * 2009-11-18 2011-05-19 Navilyst Medical, Inc. Valved Catheter with Integrated Pressure Measurement Capabilities
US20110118677A1 (en) * 2009-11-17 2011-05-19 C. R. Bard, Inc. Overmolded access port including anchoring and identification features
US8083721B2 (en) 2009-01-29 2011-12-27 Navilyst Medical, Inc. Power injection valve
US8277425B2 (en) 2004-03-24 2012-10-02 Navilyst Medical, Inc. Dual lumen port with F-shaped connector
US8366687B2 (en) 2004-01-06 2013-02-05 Angio Dynamics Injection access port with chamfered top hat septum design
USD676955S1 (en) 2010-12-30 2013-02-26 C. R. Bard, Inc. Implantable access port
US8382723B2 (en) 2005-03-04 2013-02-26 C. R. Bard, Inc. Access port identification systems and methods
US8382724B2 (en) 2005-03-04 2013-02-26 C. R. Bard, Inc. Systems and methods for radiographically identifying an access port
USD682416S1 (en) 2010-12-30 2013-05-14 C. R. Bard, Inc. Implantable access port
US8529523B2 (en) 2003-06-27 2013-09-10 Navilyst Medical, Inc. Pressure actuated valve with improved biasing member
US8585660B2 (en) 2006-01-25 2013-11-19 Navilyst Medical, Inc. Valved catheter with power injection bypass
US8608713B2 (en) 1998-12-07 2013-12-17 C. R. Bard, Inc. Septum feature for identification of an access port
US8641676B2 (en) 2005-04-27 2014-02-04 C. R. Bard, Inc. Infusion apparatuses and methods of use
US8679074B2 (en) 2003-03-18 2014-03-25 Angiodynamics, Inc. Pressure responsive slit valve assembly for a plurality of fluids and uses thereof
US8753320B2 (en) 2009-07-13 2014-06-17 Navilyst Medical, Inc. Method to secure an elastic component in a valve
US8998860B2 (en) 2005-03-04 2015-04-07 C. R. Bard, Inc. Systems and methods for identifying an access port
US9265912B2 (en) 2006-11-08 2016-02-23 C. R. Bard, Inc. Indicia informative of characteristics of insertable medical devices
US20160265519A1 (en) * 2015-03-11 2016-09-15 Surpass Industry Co., Ltd. Flow control apparatus
US9474888B2 (en) 2005-03-04 2016-10-25 C. R. Bard, Inc. Implantable access port including a sandwiched radiopaque insert
US9579496B2 (en) 2007-11-07 2017-02-28 C. R. Bard, Inc. Radiopaque and septum-based indicators for a multi-lumen implantable port
US9603993B2 (en) 2005-03-04 2017-03-28 C. R. Bard, Inc. Access port identification systems and methods
US9895524B2 (en) 2012-07-13 2018-02-20 Angiodynamics, Inc. Fluid bypass device for valved catheters
US20180080578A1 (en) * 2013-01-11 2018-03-22 Yu-Chong Tai Diaphragm check valves and methods of manufacture thereof
US10130750B2 (en) 2004-01-29 2018-11-20 Angiodynamics, Inc. Pressure activated valve with high flow slit
US10307581B2 (en) 2014-10-07 2019-06-04 C. R. Bard, Inc. Reinforced septum for an implantable medical device

Cited By (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901235A (en) * 1973-05-24 1975-08-26 Kendall & Co Anti-reflux device for urinary collection bags
US4036412A (en) * 1974-03-11 1977-07-19 Loren S. Fond Elastomeric cartridge with slitted nozzle tip
US3965900A (en) * 1974-10-02 1976-06-29 The Kendall Company Anti-reflux device
US4846787A (en) * 1985-10-28 1989-07-11 Gambro Ab Apparatus for preventing back-flow of fluid in a blood filtering system
US4685905A (en) * 1986-02-20 1987-08-11 Clinical Plastic Products Implantable arterial catheter, especially multidose injection catheter
EP0325470A2 (en) * 1988-01-22 1989-07-26 Avon Polymer Products Limited Tubes for peristaltic pumps and methods of making them
EP0325470B1 (en) * 1988-01-22 1994-08-03 Avon Polymer Products Limited Tubes for peristaltic pumps and methods of making them
US5030210A (en) * 1988-02-08 1991-07-09 Becton, Dickinson And Company Catheter valve assembly
US5117999A (en) * 1989-01-12 1992-06-02 Canzano Pasquale S Low pressure relief valve for fixed and movable systems
US6723075B2 (en) 1997-10-01 2004-04-20 Christopher T. Davey Medical fluid infusion and aspiration
US6120483A (en) * 1997-10-01 2000-09-19 Boston Scientific Corporation Medical fluid infusion and aspiration
US6436077B1 (en) 1997-10-01 2002-08-20 Boston Scientific Corporation Medical fluid infusion and aspiration
US5928203A (en) * 1997-10-01 1999-07-27 Boston Scientific Corporation Medical fluid infusion and aspiration
US8608713B2 (en) 1998-12-07 2013-12-17 C. R. Bard, Inc. Septum feature for identification of an access port
US20050283122A1 (en) * 2000-04-03 2005-12-22 Greg Nordgren Slit valves bridging between the tip and distal side wall of catheter tubes and methods
US6457613B1 (en) * 2001-01-08 2002-10-01 Eugene Ennalls Patterson Container equipped with protective seal
US20020156430A1 (en) * 2001-04-19 2002-10-24 Haarala Brett T. Catheter slit valves
US8679074B2 (en) 2003-03-18 2014-03-25 Angiodynamics, Inc. Pressure responsive slit valve assembly for a plurality of fluids and uses thereof
US8529523B2 (en) 2003-06-27 2013-09-10 Navilyst Medical, Inc. Pressure actuated valve with improved biasing member
US20050043703A1 (en) * 2003-08-21 2005-02-24 Greg Nordgren Slit valves for catheter tips and methods
US20070276313A1 (en) * 2003-08-29 2007-11-29 Moorehead H R Valved Catheters Including High Flow Rate Catheters
US8079987B2 (en) 2003-08-29 2011-12-20 Navilyst Medical, Inc. Valved catheters including high flow rate catheters
US8540685B2 (en) 2003-08-29 2013-09-24 Navilyst Medical, Inc. Valved catheters including high flow rate catheters
US8366687B2 (en) 2004-01-06 2013-02-05 Angio Dynamics Injection access port with chamfered top hat septum design
US20050165364A1 (en) * 2004-01-22 2005-07-28 Dimatteo Kristian Valved catheter to bypass connector
US8034035B2 (en) 2004-01-29 2011-10-11 Navilyst Medical, Inc. Pressure activated safety valve with high flow slit
US9933079B2 (en) 2004-01-29 2018-04-03 Angiodynamics, Inc. Stacked membrane for pressure actuated valve
US8454574B2 (en) 2004-01-29 2013-06-04 Navilyst Medical, Inc. Pressure activated safety valve with grooved membrane
US20050171510A1 (en) * 2004-01-29 2005-08-04 Dicarlo Paul Pressure actuated safety valve with spiral flow membrane
US8377011B2 (en) 2004-01-29 2013-02-19 Angiodynamics, Inc. Pressure activated valve with high flow slit
US20050171488A1 (en) * 2004-01-29 2005-08-04 Karla Weaver Pressure activated safety valve with high flow slit
US8267915B2 (en) 2004-01-29 2012-09-18 Navilyst Medical, Inc. Dual well port device
US8187234B2 (en) 2004-01-29 2012-05-29 Navilyst Medical, Inc. Pressure activated safety valve with anti-adherent coating
US20050171502A1 (en) * 2004-01-29 2005-08-04 Katie Daly Dual well port device
US20050171489A1 (en) * 2004-01-29 2005-08-04 Karla Weaver Pressure activated safety valve with anti-adherent coating
US10130750B2 (en) 2004-01-29 2018-11-20 Angiodynamics, Inc. Pressure activated valve with high flow slit
US20050171490A1 (en) * 2004-01-29 2005-08-04 Karla Weaver Stacked membrane for pressure actuated valve
US8277425B2 (en) 2004-03-24 2012-10-02 Navilyst Medical, Inc. Dual lumen port with F-shaped connector
US20060184139A1 (en) * 2005-02-11 2006-08-17 Quigley Karla W Pressure activated safety valve with improved flow characteristics and durability
US8328768B2 (en) 2005-02-11 2012-12-11 Angiodynamics, Inc Pressure activated safety valve with improved flow characteristics and durability
US8382723B2 (en) 2005-03-04 2013-02-26 C. R. Bard, Inc. Access port identification systems and methods
US9603992B2 (en) 2005-03-04 2017-03-28 C. R. Bard, Inc. Access port identification systems and methods
US10238850B2 (en) 2005-03-04 2019-03-26 Bard Peripheral Vascular, Inc. Systems and methods for radiographically identifying an access port
US9603993B2 (en) 2005-03-04 2017-03-28 C. R. Bard, Inc. Access port identification systems and methods
US10265512B2 (en) 2005-03-04 2019-04-23 Bard Peripheral Vascular, Inc. Implantable access port including a sandwiched radiopaque insert
US9682186B2 (en) 2005-03-04 2017-06-20 C. R. Bard, Inc. Access port identification systems and methods
US9474888B2 (en) 2005-03-04 2016-10-25 C. R. Bard, Inc. Implantable access port including a sandwiched radiopaque insert
US8998860B2 (en) 2005-03-04 2015-04-07 C. R. Bard, Inc. Systems and methods for identifying an access port
US8939947B2 (en) 2005-03-04 2015-01-27 C. R. Bard, Inc. Systems and methods for radiographically identifying an access port
US10179230B2 (en) 2005-03-04 2019-01-15 Bard Peripheral Vascular, Inc. Systems and methods for radiographically identifying an access port
US8382724B2 (en) 2005-03-04 2013-02-26 C. R. Bard, Inc. Systems and methods for radiographically identifying an access port
US8603052B2 (en) 2005-03-04 2013-12-10 C. R. Bard, Inc. Access port identification systems and methods
US8585663B2 (en) 2005-03-04 2013-11-19 C. R. Bard, Inc. Access port identification systems and methods
US20090216216A1 (en) * 2005-04-27 2009-08-27 C. R. Bard, Inc. Methods of performing a power injection procedure
US10016585B2 (en) 2005-04-27 2018-07-10 Bard Peripheral Vascular, Inc. Assemblies for identifying a power injectable access port
US9421352B2 (en) 2005-04-27 2016-08-23 C. R. Bard, Inc. Infusion apparatuses and methods of use
US9937337B2 (en) 2005-04-27 2018-04-10 C. R. Bard, Inc. Assemblies for identifying a power injectable access port
US10183157B2 (en) 2005-04-27 2019-01-22 Bard Peripheral Vascular, Inc. Assemblies for identifying a power injectable access port
US8641688B2 (en) 2005-04-27 2014-02-04 C. R. Bard, Inc. Assemblies for identifying a power injectable access port
US8545460B2 (en) 2005-04-27 2013-10-01 C. R. Bard, Inc. Infusion apparatuses and related methods
US8641676B2 (en) 2005-04-27 2014-02-04 C. R. Bard, Inc. Infusion apparatuses and methods of use
US8475417B2 (en) 2005-04-27 2013-07-02 C. R. Bard, Inc. Assemblies for identifying a power injectable access port
US10052470B2 (en) 2005-04-27 2018-08-21 Bard Peripheral Vascular, Inc. Assemblies for identifying a power injectable access port
US20090259175A1 (en) * 2005-05-03 2009-10-15 Greg Nordgren Outdwelling slit valves and assemblies for medical liquid flow through a cannula and related methods
US8092432B2 (en) 2005-05-03 2012-01-10 Nordgren Corporation Outdwelling slit valves and assemblies for medical liquid flow through a cannula and related methods
US20060253084A1 (en) * 2005-05-03 2006-11-09 Greg Nordgren Outdwelling slit valves and assemblies for medical liquid flow through a cannula and related methods
US8585660B2 (en) 2006-01-25 2013-11-19 Navilyst Medical, Inc. Valved catheter with power injection bypass
US20080108949A1 (en) * 2006-11-08 2008-05-08 C. R. Bard, Inc. Resource information key for an insertable medical device
US9265912B2 (en) 2006-11-08 2016-02-23 C. R. Bard, Inc. Indicia informative of characteristics of insertable medical devices
US9642986B2 (en) 2006-11-08 2017-05-09 C. R. Bard, Inc. Resource information key for an insertable medical device
US10092725B2 (en) 2006-11-08 2018-10-09 C. R. Bard, Inc. Resource information key for an insertable medical device
US20080215014A1 (en) * 2007-03-01 2008-09-04 Greg Nordgren Manually activated flow/no flow medical slit valves and related methods
US9579496B2 (en) 2007-11-07 2017-02-28 C. R. Bard, Inc. Radiopaque and septum-based indicators for a multi-lumen implantable port
US10086186B2 (en) 2007-11-07 2018-10-02 C. R. Bard, Inc. Radiopaque and septum-based indicators for a multi-lumen implantable port
US8257321B2 (en) 2008-05-21 2012-09-04 Navilyst Medical, Inc. Pressure activated valve for high flow rate and pressure venous access applications
US20090292252A1 (en) * 2008-05-21 2009-11-26 Raymond Lareau Pressure Activated Valve for High Flow Rate and Pressure Venous Access Applications
US9447892B2 (en) 2008-05-21 2016-09-20 Angiodynamics, Inc. Pressure activated valve for high flow rate and pressure venous access applications
US20100063451A1 (en) * 2008-09-09 2010-03-11 Jeff Gray Power Injectable Port Identification
US8075536B2 (en) 2008-09-09 2011-12-13 Navilyst Medical, Inc. Power injectable port identification
US8932271B2 (en) 2008-11-13 2015-01-13 C. R. Bard, Inc. Implantable medical devices including septum-based indicators
US20100121283A1 (en) * 2008-11-13 2010-05-13 C. R. Bard, Inc. Implantable medical devices including septum-based indicators
US10052471B2 (en) 2008-11-13 2018-08-21 C. R. Bard, Inc. Implantable medical devices including septum-based indicators
US20100191192A1 (en) * 2009-01-28 2010-07-29 Jayanthi Prasad Three-way Valve for Power Injection in Vascular Access Devices
US8337470B2 (en) 2009-01-28 2012-12-25 Angiodynamics, Inc. Three-way valve for power injection in vascular access devices
US8523821B2 (en) 2009-01-29 2013-09-03 Navilyst Medical, Inc Power injection valve
US8083721B2 (en) 2009-01-29 2011-12-27 Navilyst Medical, Inc. Power injection valve
US8753320B2 (en) 2009-07-13 2014-06-17 Navilyst Medical, Inc. Method to secure an elastic component in a valve
US20110087093A1 (en) * 2009-10-09 2011-04-14 Navilyst Medical, Inc. Valve configurations for implantable medical devices
US10155101B2 (en) 2009-11-17 2018-12-18 Bard Peripheral Vascular, Inc. Overmolded access port including anchoring and identification features
US9079004B2 (en) 2009-11-17 2015-07-14 C. R. Bard, Inc. Overmolded access port including anchoring and identification features
US9248268B2 (en) 2009-11-17 2016-02-02 C. R. Bard, Inc. Overmolded access port including anchoring and identification features
US9717895B2 (en) 2009-11-17 2017-08-01 C. R. Bard, Inc. Overmolded access port including anchoring and identification features
US20110118677A1 (en) * 2009-11-17 2011-05-19 C. R. Bard, Inc. Overmolded access port including anchoring and identification features
US20110118612A1 (en) * 2009-11-18 2011-05-19 Navilyst Medical, Inc. Valved Catheter with Integrated Pressure Measurement Capabilities
USD682416S1 (en) 2010-12-30 2013-05-14 C. R. Bard, Inc. Implantable access port
USD676955S1 (en) 2010-12-30 2013-02-26 C. R. Bard, Inc. Implantable access port
US9895524B2 (en) 2012-07-13 2018-02-20 Angiodynamics, Inc. Fluid bypass device for valved catheters
US10240689B2 (en) * 2013-01-11 2019-03-26 Minipumps, Llc Diaphragm check valves and methods of manufacture thereof
US20180080578A1 (en) * 2013-01-11 2018-03-22 Yu-Chong Tai Diaphragm check valves and methods of manufacture thereof
US10307581B2 (en) 2014-10-07 2019-06-04 C. R. Bard, Inc. Reinforced septum for an implantable medical device
US20160265519A1 (en) * 2015-03-11 2016-09-15 Surpass Industry Co., Ltd. Flow control apparatus

Similar Documents

Publication Publication Date Title
US3191600A (en) Blood suction apparatus
US3601152A (en) Unidirectional flow valve
US3312237A (en) Bicuspid heart valve
US3233610A (en) Hydrocephalus shunt pump
US3566875A (en) Device for draining cerebrospinal fluid
CA1054073A (en) Gas purging fluid filter
US3291151A (en) Fluid exchange system
US3489647A (en) Artificial organ for membrane dialysis of biological fluids
US3192863A (en) Blood pump
US4141379A (en) Check valve
US5669764A (en) Pneumatic diaphragm pump
US7273465B2 (en) Device and methods for body fluid flow control in extracorporeal fluid treatments
US4784577A (en) Pump pressure sensor
US3398743A (en) Closed system irrigating apparatus for viscus organs
US3062153A (en) Method of and means for pumping various kinds of matter
US5059182A (en) Portable infusion device
CA2323924C (en) Peristaltic pump and cassette
US4514295A (en) Dialysis apparatus
US3685786A (en) Elastic valve element having variable orifice
US3526223A (en) Space suit and membrane pump system therefor
US5814004A (en) System for regulating pressure within an extracorporeal circuit
GB1104527A (en) Improvements in or relating to the purification of fluids by reverse osmosis apparatus
US4160455A (en) Heater for heating fluid in a body cavity
US4904236A (en) Fluid flow control valve
US8888470B2 (en) Pumping cassette