US2518165A - Instrument for the taking and injection of blood - Google Patents

Instrument for the taking and injection of blood Download PDF

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Publication number
US2518165A
US2518165A US4881848A US2518165A US 2518165 A US2518165 A US 2518165A US 4881848 A US4881848 A US 4881848A US 2518165 A US2518165 A US 2518165A
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Prior art keywords
tube
blood
glass
taking
needle
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Andre Charles Millard
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PONCTIOVID A RESPONSAB Ste
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PONCTIOVID A RESPONSAB Ste
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150015Source of blood
    • A61B5/15003Source of blood for venous or arterial blood
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150206Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150221Valves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150351Caps, stoppers or lids for sealing or closing a blood collection vessel or container, e.g. a test-tube or syringe barrel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150374Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381Design of piercing elements
    • A61B5/150389Hollow piercing elements, e.g. canulas, needles, for piercing the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150374Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381Design of piercing elements
    • A61B5/150503Single-ended needles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150374Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381Design of piercing elements
    • A61B5/150503Single-ended needles
    • A61B5/150519Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150374Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150541Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150374Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150541Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
    • A61B5/150557Protectors removed by bending
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150374Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150694Procedure for removing protection means at the time of piercing
    • A61B5/150717Procedure for removing protection means at the time of piercing manually removed
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150732Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/153Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
    • A61B5/154Devices using pre-evacuated 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/28Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details

Description

Aug. 8, 1950 A. c. MILLARD INSTRUMENT FOR THE TAKING AND INJECTION OF BLOOD Filed Sept. 11, 1948 I Q I INVENTOR fl/mz 6249mm mun/en BY Y ATTORNEYS Patented Aug. 8, 1950 UNITED IN STBUMENT FOR THE TAKING D INJECTION OF BLOOD Andr Charles Mil-lard, Lyon, France Application September 11, 1948, Serial No. 48,818.

In France July 9, 1 947 I 1 Claim.- (01. 128-.21:4)

This invention relates to instruments for the taking of blood and for injection.

It isalready known to provide sterile instruments. for the aseptic taking .of blood, said instruments comprising a rubber end-piece which is mounted at one end, on a test-glass for receiving theblood and is integral at itsother end, with a glass tube that carries the needle and is extended into the aforesaid end-piece bya bent part which rests against its internal periphery, advantagev being taken of the elastcity of the endpie'ce by changing .the inclination .of the needlesupporting tube in relation to the test-glass, in order to establishor .cut off communication with the vacuum previously created in the said testglass.

This kind of sterile apparatus for the aseptic taking of "bloodpresents, for the practitioner, certain difficulties by reason of the fact that, in order to ensure the maintenance of the vacuum in the test-glass when the needle has been uncovered and also to ensure the air-tightness of v the test-glass after the taking of the blood, it is necessary that the pressure of the bent part of the needle-carrying tube against the internal periphery of the rubber end-piece should be sufiiciently great; conversely, this renders it necessary after having pierced the vein with the needle, to develop a force that is suificiently great to obtain the required change of inclination.

There is therefore a risk of the needle swerving in the vein, thus causing the patient pain and leading to a defective taking of blood.

The present invention concerns an instrument of this kind which obviates the aforesaid disadvantages.

It is characterised essentially by the fact that, in a rubber tube, which connects the test-glass to the needle-carrying tube, there is inserted a ball, preferably made of glass, the diameter of which is greater than that of the orifice of the said rubber tube, so as to stretch the tube on its inside and thus ensure closure thereof, the closing effect being easily eliminated, at the moment of piercing, by simple external squeezing of the said rubber tube, between the fingers, opposite the ball. This squeezing produces in effect, a deformation of the rubber and causes the rubber to slip on the ball, thereby creating two lateral passages around the ball.

It is thus seen that the drawbacks set forth above, of the existing instruments, are wholly eliminated, since the placing of the needle-carrying tube into communication with the testglass and also its subsequent closure are obtained Without the necessity'of changing the position of the said needle-carrying tube in relation to the test-glass. I v In addition to its 'great ease of manipulation, the instrument according to the invention 'is also very easyto manufacture. v

In the foregoing, reference is made more especially to the taking of blood by vacuum created previously inside the test-glass in order to produce therein suction of the blood. ;It can easily be'seen, however, that the same instrument can be applied, without modification, to injections by putting under pressure, in the'test-glass, the liquid to be injected. In contradistinction with the taking of blood for which 'the test glass is first submitted to vacuum before it is sealed, it is necessary in such a case to fill the testglass before sealing it withthel'iquid to be injected, preferably under the pressure of a small amount of a neutral gas. Both the evacuation of the test glass and its filling under pressure may be performed in any suitable manner well known in the art.

According to an embodiment of the invention which is more particularly advantageous although not essential, the rubber tube, which provides the connection between the test-glass and the needle-carrying tube, may be formed, opposite the position' of the ball situated within it, with two opposite enlarged or flat parts, on which the fingers are to be placed, to ensure and facilitate the squeezing of the rubber tube.

The invention consequently covers, as a new industrial product, any sterile instrument for the aseptic taking of blood or injection, in which the closure and temporary opening of the communication between the test-glass and the needlecarrying tube is obtained in the manner herein described.

In order that the invention may be more clearly understood, the same will now be described, by way of example, with reference to the accompanying diagrammatic drawings, in which:

Figure 1 is a part-sectional view of the instrument;

Figure 2 is, on a larger scale, a longitudinal section of the rubber tube in its ball-receiving part; and

Figures 3 and 4 are, on the same enlarged scale, two cross-sections on the line 3-3 of Figure 2 and show respectively the tube in shut-off and open positions.

Referring to the drawings: I denotes the testglass; 2 denotes the rubber tube which is securely mounted thereon by an end-piece 3 also of rubber and integral therewith; 4 is a glass tube which is mounted at the end of the tube 2 and in which is sealed the needle 5 covered by the protecting cap 6.

As shown in Figure 1, the tube 2 is normally straight when the device is held in inclined position or, in other words, is semi-rigid so that the device may be readily manipulated with one hand.

Inserted within the tube 2 is a, ball I which is preferably made of glass and the diameter of which is greater than that of the orifice of the said tube, so as to stretch the tube on its inside by the elastic expansion of the rubber. The arrangement thus ensures the closure-of the tube 2 by eliminating all communication between the test-glass, inside which a vacuum has been previously created, and the needle-carrying tube.

The aforesaid rubber tube 2 comprises on the outside opposite the ball 1, two fiat parts 8 which are 180 apart.

In order to carry out an aseptic blood-taking with this instrument, it is sufficient, after having removed the cap 6. by filing at x-ac and after having piercedthevein with the needle 5,-to take hold of the tube 2 between two ,fingers by its flat parts 8' and to squeeze it, as indicated by the arrows shown in Figure 4;, The rubber is squashed and slideson the ball 1 thereby creating two lateral passages 9 which bring the test-glass l and the needle-carrying tube 4 into communication with each other. The-blood then flows into the test-glass. When the blood-taking is finished, it is sufficient to release the tube 2 which, returning to its original diameter, closes the testglass by means of the ball 1.

In order to remove theneedle from the blood filled test glass after the blood taking is terminated, it is sufficient to break the tube 4 after filing at y--y. Thus the test glass may be sent to a laboratory for analysis under perfectly sterile conditions without it being necessary for it to be accompanied by the needle and associated end of the tube 4.

What I claim is:

A syringe or the like instrument for medical purposes, comprising an ampule, syringe needle, a straight tube of an elastic material secured to the open end of the ampule and the rear end of the needle, respectively, said tube forming a straight, fluid type, semi-rigid connection between said ampule and needle and having part of its length exposed for grasping by the fingers of the operator, and a ball of rigid material having a diameter in excess of the inner diameter of said tube and being seated in the exposed part of the latter, whereby pressure of the operators fingers on the ball creates a temporary deformation of said tube, to increase its inner diameter at right angles to the direction of the pressure and to provide passages for a fluid past the ball.

ANDRE CHARLES MILLARD.

REFERENCES CITED The following references are of record in th file of this patent: 1

UNITED STATES PYA'IENTS

US2518165A 1947-07-09 1948-09-11 Instrument for the taking and injection of blood Expired - Lifetime US2518165A (en)

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FR968833T 1947-07-09

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BE (1) BE483882A (en)
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GB (1) GB642061A (en)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784716A (en) * 1955-03-31 1957-03-12 Baxter Laboratories Inc Syringe unit
US2832344A (en) * 1954-12-27 1958-04-29 Davidson Emil Blood sample collector
US2853069A (en) * 1955-05-09 1958-09-23 Cutter Lab Flexible container with integral flow control
US2950716A (en) * 1956-01-23 1960-08-30 Fenwal Lab Inc Fluid handling method and apparatus
US3143109A (en) * 1962-02-12 1964-08-04 Raytheon Co Blood drawing device
US3797486A (en) * 1973-01-02 1974-03-19 R Shaps Intravenous infusion assembly
US3826256A (en) * 1972-01-13 1974-07-30 Medidyne Corp Catheter delivery device
US3939822A (en) * 1974-08-14 1976-02-24 Jack Markowitz Disposable blood collection and filtering device
US4022217A (en) * 1975-09-15 1977-05-10 Dupaco Incorporated Cuff configuration for cuff tracheal tubes
US4106675A (en) * 1976-12-22 1978-08-15 The Kendall Company Liquid sampling device
US4114659A (en) * 1975-06-18 1978-09-19 Eitan Goldberg Pipette filling and liquid dispensing device
US4142645A (en) * 1978-04-12 1979-03-06 Walton Donald G Vacuum sealing closure lid for home canning operations
US4296759A (en) * 1977-06-27 1981-10-27 Sherwood Medical Industries Inc. Blood collection device and method with anti-backflow means
US4333479A (en) * 1979-10-01 1982-06-08 Shiplee Iii Lewis D Disposable needle assembly
US4730635A (en) * 1987-08-19 1988-03-15 Hall Surgical Valve and method
US4932938A (en) * 1989-05-05 1990-06-12 Medical Engineering Corporation Urethral indwelling catheter with incontinence control
US5019055A (en) * 1989-12-22 1991-05-28 Boyle Matthew O Flow regulator and method
US5265847A (en) * 1993-05-03 1993-11-30 Vorhis Daniel J Squeeze valve with augmented sealing
US5295293A (en) * 1990-03-01 1994-03-22 Alfred Teves Gmbh Arrangement and method for closing off fluid passages
US5443097A (en) * 1990-03-01 1995-08-22 Alfred Teves Gmbh Arrangement for closing off fluid passages
US5458138A (en) * 1990-05-23 1995-10-17 Gajo; Alden H. Nasopharyngeal fluid suction device
US5785300A (en) * 1996-03-04 1998-07-28 Moog Inc. Device for providing a uniformly-variable annular orifice
US5826621A (en) * 1996-08-05 1998-10-27 Alaris Medical Systems, Inc. Valve apparatus
US20020007156A1 (en) * 2000-05-11 2002-01-17 Miles Scott D. Apparatus and method for preventing free flow in an infusion line
US6659976B2 (en) * 2001-04-16 2003-12-09 Zevek, Inc. Feeding set adaptor
US20040220542A1 (en) * 2000-05-11 2004-11-04 David Cise Apparatus and method for preventing free flow in an infusion line
US20090254034A1 (en) * 2008-04-01 2009-10-08 Kent Beck Safety occluder and method of use
US20100082001A1 (en) * 2008-04-01 2010-04-01 Kent Beck Anti-free flow mechanism for enteral feeding pumps
US20100204651A1 (en) * 2009-02-06 2010-08-12 Mark Stringham Automatic safety occluder
US7815612B2 (en) 2000-05-11 2010-10-19 Zevex, Inc. Apparatus and method for preventing free flow in an infusion line
USD672455S1 (en) 2010-10-01 2012-12-11 Zevex, Inc. Fluid delivery cassette
US8425470B2 (en) 2008-04-01 2013-04-23 Zevex, Inc. Anti-free-flow mechanism for enteral feeding pumps
US8911414B2 (en) 2010-10-01 2014-12-16 Zevex, Inc. Anti free-flow occluder and priming actuator pad

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL279576A (en) * 1961-06-13
DK139925C (en) * 1975-02-27 1979-10-22 Sedimat V/Ole Riis & Co
CN105748090A (en) * 2016-02-02 2016-07-13 上海交通大学 Minimally invasive sampling and injecting device based on MEMS microneedle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191328387A (en) * 1913-12-09 1914-11-19 Gibbard Richard Hughes Improvements in Apparatus for Drawing Blood from a Vein, or for Decanting other Fluids into an Exhausted Receiver.
US1124285A (en) * 1912-05-28 1915-01-12 Philip V Brown Device for withdrawing blood from the body.
US1951743A (en) * 1930-04-25 1934-03-20 Iso Ges M B H Method of producing a prepared breaking point in ampulle
US2314767A (en) * 1942-03-18 1943-03-23 Burrell Technical Supply Compa Adjustable rubber valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1124285A (en) * 1912-05-28 1915-01-12 Philip V Brown Device for withdrawing blood from the body.
GB191328387A (en) * 1913-12-09 1914-11-19 Gibbard Richard Hughes Improvements in Apparatus for Drawing Blood from a Vein, or for Decanting other Fluids into an Exhausted Receiver.
US1951743A (en) * 1930-04-25 1934-03-20 Iso Ges M B H Method of producing a prepared breaking point in ampulle
US2314767A (en) * 1942-03-18 1943-03-23 Burrell Technical Supply Compa Adjustable rubber valve

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832344A (en) * 1954-12-27 1958-04-29 Davidson Emil Blood sample collector
US2784716A (en) * 1955-03-31 1957-03-12 Baxter Laboratories Inc Syringe unit
US2853069A (en) * 1955-05-09 1958-09-23 Cutter Lab Flexible container with integral flow control
US2950716A (en) * 1956-01-23 1960-08-30 Fenwal Lab Inc Fluid handling method and apparatus
US3143109A (en) * 1962-02-12 1964-08-04 Raytheon Co Blood drawing device
US3826256A (en) * 1972-01-13 1974-07-30 Medidyne Corp Catheter delivery device
US3797486A (en) * 1973-01-02 1974-03-19 R Shaps Intravenous infusion assembly
US3939822A (en) * 1974-08-14 1976-02-24 Jack Markowitz Disposable blood collection and filtering device
US4114659A (en) * 1975-06-18 1978-09-19 Eitan Goldberg Pipette filling and liquid dispensing device
US4022217A (en) * 1975-09-15 1977-05-10 Dupaco Incorporated Cuff configuration for cuff tracheal tubes
US4106675A (en) * 1976-12-22 1978-08-15 The Kendall Company Liquid sampling device
US4296759A (en) * 1977-06-27 1981-10-27 Sherwood Medical Industries Inc. Blood collection device and method with anti-backflow means
US4142645A (en) * 1978-04-12 1979-03-06 Walton Donald G Vacuum sealing closure lid for home canning operations
US4333479A (en) * 1979-10-01 1982-06-08 Shiplee Iii Lewis D Disposable needle assembly
US4730635A (en) * 1987-08-19 1988-03-15 Hall Surgical Valve and method
US4932938A (en) * 1989-05-05 1990-06-12 Medical Engineering Corporation Urethral indwelling catheter with incontinence control
US5019055A (en) * 1989-12-22 1991-05-28 Boyle Matthew O Flow regulator and method
US5295293A (en) * 1990-03-01 1994-03-22 Alfred Teves Gmbh Arrangement and method for closing off fluid passages
US5443097A (en) * 1990-03-01 1995-08-22 Alfred Teves Gmbh Arrangement for closing off fluid passages
US5458138A (en) * 1990-05-23 1995-10-17 Gajo; Alden H. Nasopharyngeal fluid suction device
US5265847A (en) * 1993-05-03 1993-11-30 Vorhis Daniel J Squeeze valve with augmented sealing
US5785300A (en) * 1996-03-04 1998-07-28 Moog Inc. Device for providing a uniformly-variable annular orifice
US5826621A (en) * 1996-08-05 1998-10-27 Alaris Medical Systems, Inc. Valve apparatus
US7150727B2 (en) 2000-05-11 2006-12-19 Zevex, Inc. Apparatus and method for preventing free flow in an infusion line
US6623447B2 (en) * 2000-05-11 2003-09-23 Zevex, Inc. Apparatus and method for preventing free flow in an infusion line
US20020007156A1 (en) * 2000-05-11 2002-01-17 Miles Scott D. Apparatus and method for preventing free flow in an infusion line
US20040039347A1 (en) * 2000-05-11 2004-02-26 Scott Miles Apparatus and method for preventing free flow in an infusion line
US20040220542A1 (en) * 2000-05-11 2004-11-04 David Cise Apparatus and method for preventing free flow in an infusion line
US20050119625A1 (en) * 2000-05-11 2005-06-02 Scott Miles Apparatus and method for preventing free flow in an infusion line
US6923785B2 (en) 2000-05-11 2005-08-02 Zevex, Inc. Apparatus and method for preventing free flow in an infusion line
US7976513B2 (en) 2000-05-11 2011-07-12 Zevex, Inc. Apparatus and method for selectively controlling flow in an infusion line
US7815612B2 (en) 2000-05-11 2010-10-19 Zevex, Inc. Apparatus and method for preventing free flow in an infusion line
US6979311B2 (en) 2000-05-11 2005-12-27 Zevex, Inc. Apparatus and method for preventing free flow in an infusion line
US7367963B2 (en) 2000-05-11 2008-05-06 Zevex, Inc. Apparatus and method for preventing free flow in an infusion line
US20050283121A1 (en) * 2000-05-11 2005-12-22 David Cise Apparatus and method for preventing free flow in an infusion line
US20050209552A1 (en) * 2001-04-16 2005-09-22 Beck Kent F Adaptor for feeding sets
US7070575B2 (en) 2001-04-16 2006-07-04 Zevex, Inc. Adaptor for feeding sets
US6659976B2 (en) * 2001-04-16 2003-12-09 Zevek, Inc. Feeding set adaptor
US8876787B2 (en) 2008-04-01 2014-11-04 Zevex, Inc. Anti-free-flow mechanism for enteral feeding pumps
US8425470B2 (en) 2008-04-01 2013-04-23 Zevex, Inc. Anti-free-flow mechanism for enteral feeding pumps
US20110028899A1 (en) * 2008-04-01 2011-02-03 Kent Beck Anti-free flow mechanism for enteral feeding pumps
US8343111B2 (en) 2008-04-01 2013-01-01 Zevex, Inc. Anti-free flow mechanism for enteral feeding pumps
US20090254034A1 (en) * 2008-04-01 2009-10-08 Kent Beck Safety occluder and method of use
US9017296B2 (en) 2008-04-01 2015-04-28 Zevex, Inc. Safety occluder and method of use
US20100082001A1 (en) * 2008-04-01 2010-04-01 Kent Beck Anti-free flow mechanism for enteral feeding pumps
US20100204651A1 (en) * 2009-02-06 2010-08-12 Mark Stringham Automatic safety occluder
US8491543B2 (en) 2009-02-06 2013-07-23 Zevex, Inc. Automatic safety occluder
US7998121B2 (en) 2009-02-06 2011-08-16 Zevex, Inc. Automatic safety occluder
USD672455S1 (en) 2010-10-01 2012-12-11 Zevex, Inc. Fluid delivery cassette
US8911414B2 (en) 2010-10-01 2014-12-16 Zevex, Inc. Anti free-flow occluder and priming actuator pad

Also Published As

Publication number Publication date Type
FR968833A (en) 1950-12-06 grant
BE483882A1 (en) grant
GB642061A (en) 1950-08-23 application
BE483882A (en) 1948-07-31 grant

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