Material Flow To Or From Body Terminated By Self-acting Means Patents (Class 604/245)
  • Patent number: 9950108
    Abstract: Systems and devices for maintaining a consistent input fluid height as fluid is consumed during infusion pump testing including a first hook disposed on an end of a first balancer arm; a second hook disposed on an end of a second balancer arm; and an aperture disposed in a connecting member; where the aperture is configured to be a pivot point for the device; and where the device is rotatable between a deployed position and a stored position.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: April 24, 2018
    Inventors: Gregory Randolph Alkire, Karl A. Ruiter
  • Patent number: 9526830
    Abstract: A wearable infusion pump assembly includes a reusable housing assembly, and a disposable housing assembly including a reservoir for receiving an infusible fluid. A releasable engagement assembly is configured to allow the reusable housing assembly to releasably engage the disposable housing assembly. A detachable external infusion set is configured to deliver the infusible fluid to a user.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: December 27, 2016
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, Larry Brian Gray, Richard J. Lanigan, John Matthew Kerwin, Stephen Lewis Fichera
  • Patent number: 8840578
    Abstract: An IOP control device for implantation in an eye of a patient is disclosed. The device includes a housing and a multilayer membrane. The housing is sized for implantation into the eye and includes an entrance port and an exit port. The membrane is anchored within the housing to form a flow control chamber on a first side and a fluid flow passageway on a second opposing side of the membrane. The chamber is arranged to contain a gas creating a chamber pressure, and the membrane is configured to affect flow through the passageway from the entrance port to the exit port by deflecting in response to changes in the chamber pressure. The membrane comprises a first layer having a higher permeability and a higher flexibility than the second layer, which is disposed adjacent the first layer and restricts the diffusion of gas in the chamber through the membrane.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: September 23, 2014
    Assignee: Alcon Research, Ltd.
    Inventors: Cesario P. Dos Santos, Michael L. Gelvin
  • Patent number: 8730050
    Abstract: A device for monitoring the condition of a fluid receptacle such as one that is gradually filling or emptying is disclosed. The receptacle is attached to a torque weighing device, coupled with a transducer that outputs a measurement signal representing the weight of the receptacle. An alert or alarm may be generated by a signaling device in response to the measurement signal.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: May 20, 2014
    Assignee: Hill-Rom SAS
    Inventor: Frederic Bregeon
  • Patent number: 8568365
    Abstract: Methods and apparatus for a syringe adapter. In one embodiment, an adapter/cap assembly is threadably engaged to a syringe for enteral feeding applications. The adapter cannot be removed from the syringe to prevent the syringe from being used for IV applications.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: October 29, 2013
    Inventor: Alan Reid
  • Patent number: 8545951
    Abstract: Anti-fouling treatments are applied to polymer substrates for preventing bacterial adhesion. The polymer substrate may comprise a medical device, such as a catheter. The treatment generally comprises a polymer layer graft polymerized to the surface of the polymer substrate. An anti-biofilm agent is contained in the polymer layer or applied to the surface. A polymer over-layer is then applied that encapsulates the anti-biofilm agent. The anti-biofilm agent prevents bacterial adhesion through the polymer over-layer.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: October 1, 2013
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ali Yahiaoui, Brian J. Cuevas, Anthony Stephen Spencer, Charles Edward Bolian, II, David W. Koenig
  • Publication number: 20130218073
    Abstract: A blood access device including a fluid conduit configured to convey a flow of fluid to a target vessel, a second lever element pivotally and resiliently connected to a first lever element such that it may move from a first position to a second position. A biasing force is exerted on the second lever element for moving it from the first position to the second position, and a blocking member may be activated by the second lever element, such that a flow of fluid is decreased when the second lever element is moved from the first position to the second position. The lever elements are configured to be fixed to the target vessel when the second lever element is in the first position, and the second lever element moves to the second position and activates the blocking member if the fixation is at least partially lost.
    Type: Application
    Filed: June 20, 2011
    Publication date: August 22, 2013
    Inventors: Olof Ekdahl, Marco Zanini, Per Hansson, Eddie Nilsson, Olof Jansson, Lennart Jonsson
  • Patent number: 8286657
    Abstract: Featured is a vascular access device such as an IV catheter device including a housing, a tubular member and a seal member, and a securing mechanism. The housing includes a proximal and distal portion and a chamber that extends between the proximal and distal portions. The tubular member is coupled to the housing distal portion so it is fluidly coupled to the chamber. The seal member is disposed within the chamber and the securing mechanism secures the seal member distal end to the housing proximal portion so the seal member is sealingly and compressibly retained between a chamber proximal end and the securing mechanism. Such a seal member also is constituted so a portion of the seal member moves axially responsive to an axial force applied to the proximal end.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: October 16, 2012
    Assignee: Tyco Healthcare Group LP
    Inventors: Richard A. Belley, Richard Fiser, Eugene E. Weilbacher
  • Patent number: 8251945
    Abstract: A device for suctioning material out of an instrument channel during an endoscopic procedure. The device includes a biopsy valve having a first end, a second end, and an outer circumferential surface. The biopsy valve defines an internal passage leading from the first end to the second end, wherein the first end is adapted for connection to an endoscope instrument channel inlet port. Tubing connects the biopsy valve second end to a suction source connector disposed remote from the biopsy valve. A flow controller is fixed to the tubing and disposed between the biopsy valve second end and the suction source connector. The device may include an irrigation port and an instrument entry port.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: August 28, 2012
    Assignee: U.S. Endoscopy Group, Inc.
    Inventors: Dean J. Secrest, Christopher J. Kaye, Paul Davis, John P. Winstanley
  • Patent number: 8211066
    Abstract: The device (10) for selective access closure inside a catheter comprises a conduit (14) having a rear extremity (16) for the insertion of a medical instrument and a mechanism (27) for adjusting the cross-section provided within the conduit (14). The mechanism (27) comprises a member (32) for repositioning the device between an opening movement and a closing movement. The direction of movement of the repositioning member (32) along both the closing path and the opening path are identical.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: July 3, 2012
    Assignee: SEDAT
    Inventor: Pascal Denolly
  • Patent number: 8017092
    Abstract: An analyzer enabling the user to hardly breathe in a malodor given off from a reagent when exchanging a reagent container is obtained. This analyzer, connected with a reagent container including a flexible container body storing the reagent, comprises an analyzer body analyzing an analyte with the reagent and reagent transporter having a first end connected to the analyzer body and a second end connected to the reagent container. The reagent transporter includes a first connectional part, detachably connected to the reagent container, having a first switching member forming and blocking a first passage between the analyzer body and the reagent container, while the first switching member blocks the first passage when the first connectional part is separated from the reagent container, and forms the first passage when the first connectional part is connected to the reagent container.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: September 13, 2011
    Assignee: Sysmex Corporation
    Inventor: Karl-Heinz Bindrim
  • Patent number: 7758551
    Abstract: A pump set for use with a pump to deliver a supply of liquid to a patient. The feeding set has a conduit for the nutrient liquid and a safety interlock device associated with the conduit. The pumping apparatus has a pumping device and a control system for controlling operation of the pump. An electromagnetic radiation source is operatively connected to the control system of the pump for emitting an electromagnetic radiation signal in a direction for striking the safety interlock device of the feeding set. The safety interlock device is adapted to affect the direction of the electromagnetic radiation. An electromagnetic radiation detector is operatively connected to the control system for receiving the electromagnetic radiation signal when the direction is affected by the safety interlock device, and providing an indication to the control system that the feeding set conduit is properly positioned in the feeding pump.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: July 20, 2010
    Assignee: Covidien AG
    Inventors: Joel D. Wiesner, Christopher A. Knauper, James M. Harr, James G. Hanlon, Joseph A. Hudson, Ricky A. Sisk, Robert B. Gaines, Kevin C. Meier
  • Patent number: 7639151
    Abstract: The present invention is related to a liquid blocking apparatus and a system thereof, wherein if the liquid contained in an IV bag or a liquid tank is oozed out completely, the flow of liquid is blocked, the alarm lamp is turned on, the alarm sound is generated, and then the supply of liquid is maintained for a predetermined time.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: December 29, 2009
    Inventor: Sang-dae Lee
  • Publication number: 20090299293
    Abstract: A self-closing external vessel plug (1) with an integrated wide-lumen needle for puncturing vessels in the human or animal body has a pressure chamber (8), a closure part (5), a closure element (6), a pressure wall part (7), and flexible wings (13) for fixing on the body. The wide-lumen needle has a cannula (3) integrated with a connection part (2), and a protective cap (12) that can be fitted onto the cannula (3). The cannula (3) penetrates the closure element (6) and the pressure wall part (7). The protective cap (12) that can be fitted onto the cannula (3) is connected to a protective film (11) in such a way that the protective film (11) together with the protective cap (12) is applied to and can be torn off from a layer of medical skin adhesive (10) applied on the pressure wall part (7). The flexible wings (13) are formed by parts of the closure part (5), pressure wall part (7) and protective film (11).
    Type: Application
    Filed: November 9, 2006
    Publication date: December 3, 2009
    Applicant: Inova Medical AG
    Inventors: Ernst-Diethelm Harren, Marc Ulrich Lehmann
  • Publication number: 20090204070
    Abstract: One embodiment provides an extravasation detection device having an enclosure, an attachment coupled to the enclosure to be removably connected to a patient, and a detection assembly enclosed within the enclosure, in this embodiment, the detection assembly includes a housing and a transducer coupled to the housing to generate a signal representative of a force or pressure applied to the detection device caused by extravasation of medical fluid from the patient. This embodiment of a detection device may be attached to the patient's hand or other injection site. When extravasation occurs, and a swelling or blister presses against the transducer, an alarm can be triggered to warn a clinician, or the device can cause a powered injection system to automatically shut down or halt the injection process.
    Type: Application
    Filed: April 17, 2007
    Publication date: August 13, 2009
    Applicant: ACIST Medical Systems, Inc.
    Inventor: Khader Mohiuddin
  • Patent number: 7166120
    Abstract: A device, method, and system of deploying an embolic protection device at a location distal to a treatment site in a vessel of a patient. A delivery catheter is encircled by a sealing member which is expandable from a delivery configuration to a deployed configuration. The device creates a seal to prevent the flow of blood during the treatment of vascular disease. A distal protection element is delivered by the delivery catheter and deployed to filter or remove embolic debris.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: January 23, 2007
    Assignee: Ev3 Inc.
    Inventor: Richard S. Kusleika
  • Patent number: 6887220
    Abstract: The present invention is directed to a catheter that is configured to self-regulate aspiration rates through a working lumen of the catheter. The catheter comprises a compliant member in communication with the working lumen that is configured to transition from an open position to a closed position when a predetermined aspiration threshold is exceeded. In the closed position, the compliant member is temporarily drawn inward to at least partially occlude flow through the working lumen, thereby mitigating the rate of aspiration imposed upon a patient's vessel. When the rate of aspiration is reduced below the threshold level, the compliant member returns to the open position.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: May 3, 2005
    Assignee: Gore Enterprise Holdings, Inc.
    Inventor: Michael Hogendijk
  • Patent number: 6726711
    Abstract: A artificial blood vessel for facilitating the introduction of fluids into or withdrawal of fluids from the vascular system of an individual, or both, includes a tubular portion that lies beneath skin of the individual and is grafted to a natural blood vessel. Located along the tubular portion where it is offset laterally from the tubular portion is at least one pocket which encloses a chamber that communicates with the lumen of the tubular portion. The artificial blood vessel also includes a port which is attached to the pocket and has grommet that lies over the skin and contains access bore. The port also has a valve which lies at the end of the access bore to normally prevent blood from escaping through the access bore, but does allow access to the chamber for medical procedures.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: April 27, 2004
    Inventors: George Langenbach, John G. Robinson
  • Patent number: 6641559
    Abstract: A buret with foot valve for medical infusion equipment, including a transparent cylindrical container having a bottom wall with a central outlet hole for outlet of the liquid and a lateral graduated scale for indication of the level of the liquid. A float disk co-operates inside the container with the graduated scale for immediate identification of the level of the liquid, and a valve obturator is associated to the float disk for closing the outlet hole when the liquid inside the container comes to an end. The valve obturator is floating with respect to the float disk.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: November 4, 2003
    Assignee: Industrie Porla SPA
    Inventor: Gianni Guala
  • Publication number: 20030181864
    Abstract: The present invention provides a catheter for the delivery of fluid medication across an anatomical region. In accordance with one embodiment, the catheter comprises an elongated tube with a plurality of exit holes along an infusion section of the catheter, and an elongated flexible porous member residing within the tube and forming an annular space between the tube and the member. In accordance with other embodiments, the catheter includes a tube having a plurality of exit holes in a side wall of the tube. The exit holes may combine to form a flow-restricting orifice of the catheter. Advantageously, fluid within the catheter flows through all of the exit holes, resulting in uniform distribution of fluid within an anatomical region. In one particular embodiment, the catheter comprises a tube having elongated exit slots therein. In accordance with other embodiments, the catheter includes an elongated tubular member made of a porous membrane.
    Type: Application
    Filed: March 21, 2002
    Publication date: September 25, 2003
    Inventors: Jose Castillo Deniega, Roger Massengale, Kenneth W. Rake
  • Publication number: 20030114800
    Abstract: The present invention relates to a medicament injection apparatus that permits injection of a fluid medicament into a patient through a needle. If the needle is withdrawn before the injected medicament has properly dispersed locally from the injection site within a patient, the injected medicament may escape through the needle wound and not be dispersed into the patient. Unfortunately, it is common for a user to become impatient and withdraw the needle when the user feels a suitable dispersal period has elapsed. Often the waiting period determined by the user is less than the required period for dispersal of the medicament resulting in the problem identified. A medicament injection apparatus is disclosed comprising a timer and a display, the timer being actuated upon commencement of an injection operation, in which the timer runs to a predetermined time subsequent to completion of the injection operation and the display is operated while the timer runs.
    Type: Application
    Filed: December 10, 2002
    Publication date: June 19, 2003
    Applicant: DCA Design International Limited
    Inventors: Robert Frederick Veasey, Robert Woolston, Shane Alistair Day, Christopher Nigel Langley
  • Publication number: 20030114801
    Abstract: The present invention relates to a medicament injection apparatus, particularly suitable for use by those with diabetes in which, in use, once a desired dosage of medicament has been selected and expelled from the medicament cartridge into the body of the patient, the injected medicament is allowed to disperse locally from the injection site within the patient's body before the needle arrangement is removed from the patient's body. It is considered to be a problem that in known medicament injection devices the injection interval, that is the time elapsed since a previous injection, is measured following completion of a delivery stroke rather than from dispersion of the injected medicament. A medicament injection device is disclosed in which the time elapsed following an injection operation is calculated from the end of a predetermined period during which medicament is permitted to disperse subsequent to completion of an injection stroke.
    Type: Application
    Filed: December 10, 2002
    Publication date: June 19, 2003
    Applicant: DCA Design International Limited
    Inventors: Robert Woolston, Shane Alistair Day, Christopher Nigel Langley, Robert Frederick Veasey
  • Patent number: 6565525
    Abstract: A dual port vascular access assembly comprises a first access port and a second access port. The linkage is coupled between the first access port to close the second access port in the absence of an access tube in the first access port. Such port assemblies are particularly useful for implantation in patients receiving hemodialysis. By connecting the first access port to the blood withdrawal side of the system, blood withdrawal will be automatically terminated upon cessation of blood returned to due loss of the return access tube in the port assembly.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: May 20, 2003
    Assignee: Vasca, Inc.
    Inventors: Jeffrey H. Burbank, James M. Brugger
  • Publication number: 20020169424
    Abstract: An apparatus and method for preventing free flow through an infusion set utilizes an occluder disposed within the infusion set to selectively prevent flow therethrough. The occluder may be responsive to a pressure differential within the infusion set or may respond to compression of the infusion set. When a pair of occluders are used in sequence, an inline pump may be formed.
    Type: Application
    Filed: April 12, 2002
    Publication date: November 14, 2002
    Inventors: Scott Miles, Kent F. Beck, James Malmstrom
  • Patent number: 6406460
    Abstract: A syringe has a sensor for sensing physical contact between a syringe needle and the syringe. As the sensor detects that a syringe needle has just been installed into the syringe, a counter is set to “zero”, indicating the number of injections given with the installed needle. The counter automatically and cumulatively counts each injection given to the animal during a period of continuous physical contact between the syringe and the syringe needle. When the number of cumulatively counted injections equals a predetermined maximum number of injections, a syringe needle change warning mechanism delivers a needle change warning to the operator of the syringe.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: June 18, 2002
    Assignee: Agecom, Inc.
    Inventor: Thomas Hogan
  • Patent number: 6391000
    Abstract: With this device the rinsing fluid is located in a container which may be set under pressure with a gas and into which pressurised gas via a cannula may be introduced and from which rinsing fluid may be removed via another cannula. The respective filled condition of the container is acquired with a sensor, wherein the temporal course of the gas pressure in the container or of the gas flow into the container is measured and on ascertaining a gas pressure fall or gas flow rise after points in time specific to the system the means may be deactivated.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: May 21, 2002
    Assignee: Richard Wolf GmbH
    Inventors: Thomas Belikan, Michael Lamprecht, Gunter Rentschler
  • Patent number: 6126645
    Abstract: The present invention provides medical devices comprised of ionically crosslinked polymer, especially, stents, catheter or cannula components, plugs, and constrictors. The medical devices of the present invention are prepared by treatment of ionically crosslinkable polymer compositions with crosslinking ion compositions to provide ionically crosslinked materials.An important aspect of the present invention is that these medical devices can be disintegrated in-vivo at a desired time through the exposure of the medical device to a chemical trigger which generally is described as an agent that acts to displace the crosslinking ion in the ionically crosslinked material through binding or simple replacement with a non-crosslinking ion.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: October 3, 2000
    Assignee: SCIMED Life Systems, Inc.
    Inventor: Samuel Anthony Thompson
  • Patent number: 6110153
    Abstract: An infusion device with a disposable administration set which is inexpensive to manufacture. In the preferred embodiment of the present invention the disposable administration set has a plurality of elongated cam followers connected to a plate assembly, wherein the cam followers are displace in a predetermined sequence and forced against a delivery tube by cam means driven by rotary drive means. The device also includes an optical occlusion sensor which is synchronized to operate in phase with the movement of the cam followers to measure pressure within the delivery tube at one pump phase, thereby sensing downstream occlusions, and to measure vacuum within the delivery tube at a second pump phase, thereby sensing upstream occlusions. The occlusion sensor is optical, and measures the degree of total internal reflection at the interface of the tube and the plate assembly, occlusion in the tubing.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: August 29, 2000
    Assignee: ALARIS Medical Systems, Inc.
    Inventors: David L. Davis, Robert E. Brasier, Richard F. Hatch
  • Patent number: 6007516
    Abstract: An access port comprises a base and a flexible conduit. The port is subcutaneously implanted and the conduit is attached directly or indirectly to a blood vessel or other body lumen or cavity. An actuator mechanism is provided with a linkage which opens a valve in the port in response to percutaneous insertion of a needle into the access port. In particular, insertion of the needle opens the clamping mechanism to permit flow through the conduit between the blood vessel and the needle.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: December 28, 1999
    Assignee: Vasca, Inc.
    Inventors: Jeffrey H. Burbank, C. David Finch, James M. Brugger, Hendrik E. Kuiper
  • Patent number: 5869231
    Abstract: The invention relates to a sampling kit for obtaining, in a rapid and gentle manner, a defined volume of lacrimal fluid for the purpose of reproducibly determining components of the lacrimal fluid.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: February 9, 1999
    Assignee: Behring Diagnostics GmbH
    Inventors: Jurgen Romisch, Eckhard Schuler, Klaus Habenstein, Jurgen Lindner
  • Patent number: 5868715
    Abstract: An intravenous metering device having automatic stopper comprises a connecting tube that can be inserted into a liquid bottle at one end such that a fluid communication therebetween can be establish. The transfusion tube being connected to a liquid barrel that has a relative larger diameter and is adjacent to the liquid bottle. The liquid barrel serves a buffering device in which the liquid from the bottle is firstly and temporary stored thereof. The second end of the transfusion tube is connected with a catheter that can be punctured into the vein of patient. A regulating device being enveloped onto the transfusion tube at suitable position. Characterized in that the junction between the lower end of the liquid barrel and the upper end of the transfusion tube is formed with a cone-shape recess in which a valve that can be axially engaged thereof is disposed. The valve is floated over the liquid surface of the liquid barrel. The lower end of the valve is provided with a cone-shape stopper.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: February 9, 1999
    Inventor: Chen Chang Tung
  • Patent number: 5814012
    Abstract: A method and apparatus for relieving insufflation pressure in a body cavity (18) in excess of a predetermined value are provided. A conduit assembly (24) extends from the body cavity (18) through the surface (61) of a fluid reservoir and has a port (63) positioned beneath the fluid surface (61). The relief pressure is selected by setting the relative positioning of the open end (63) and fluid surface (61). The apparatus avoids insufflation gas leakage problems associated with known insufflation pressure relief devices.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: September 29, 1998
    Assignee: Birtcher Medical Systems, Inc.
    Inventors: Richard P. Fleenor, Alan R. Lee
  • Patent number: 5520643
    Abstract: An implantable access device which permits the introduction of an external filament such as a catheter, guide wire or optical fiber into a patient for communication with an internal catheter located within the body of the patient. The device includes a housing having an inlet opening, an outlet opening and a passageway communicating between the openings. The inlet opening is generally funnel shaped and guides the external filament into the passageway. A valve assembly normally remains closed prevents the flow of fluids through the passageway. When open, the valve assembly enables the filament to communicate with the internal catheter. The device is provided with a mechanism that limits the extent to which the filament can be inserted through the device.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 28, 1996
    Assignee: Michigan TransTech Corporation
    Inventors: William D. Ensminger, Robert F. Gavin
  • Patent number: 5437642
    Abstract: A free flow prevention system for preventing undesired free flow of fluid through IV tubing of the type used in an infusion pump. The system comprises a spring clip having a base and a spring arm defining a channel adapted to receive the IV tubing. The spring arm is resiliently biased to a closed position in which the IV tubing is squeezed by the spring clip to close the lumen to prevent fluid flow, and the spring arm is movable against the bias to an open position wherein the lumen of the IV tubing is allowed to open to allow flow. The system also includes a clip-opening pin in the infusion pump for moving the spring arm of the clip from its closed position to the open position.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: August 1, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary A. Thill, Mark A. Toycen, Kent R. Struble, Timothy G. Curran
  • Patent number: 5407434
    Abstract: The invention features a needle defining a flowpath, a housing comprising a proximal end and a distal inner seat leading to and defining a lumen, and a viscous material contained within the housing. The needle is slidable through the housing and the viscous material contained therein. The viscous material is fluid enough for the needle to slide therethrough, yet semi-solid enough to conform to the housing distal inner seat so as to form a seal thereat and prevent flow of fluid or air through the lumen.
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: April 18, 1995
    Assignee: The Kendall Company
    Inventor: James R. Gross
  • Patent number: 5403279
    Abstract: A blood collecting apparatus includes a measuring device provided with a sensor for measuring the amount of collected blood when blood is collected into a blood container, and a controller for calculating the amount of collected blood based on an output y of the measuring sensor. The output y is a function of an n-times measured weight w of collected blood such that y=aw+b, wherein a and b are constants characteristic of the measuring sensor. The controller detects the output yi of the measuring sensor in n+1 units of respective known amounts wi of collected blood, and corrects the constants a and b on the basis of such detected data. The controller, moreover, automatically detects the output yO of the measuring sensor every predetermined cycle in a state where the measured weight w of collected blood is zero, and corrects the constant b of the function y=aw+b on the basis of such detected output yO.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: April 4, 1995
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Fumiaki Inaba, Satoshi Inoue
  • Patent number: 5152746
    Abstract: An irrigation system is provided to communicate fluid pressure to a body cavity for diagnostic or surgical proceedings. A pump control unit generates fluid pressure and a monitor control circuit provides feedback to the pump control unit to substantially avoid a build up of excessive fluid pressure within the body cavity. In combination with a hysterscope, the irrigation system extends a uterus in a safe manner so that fluid absorption within the uterus is substantially eliminated.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: October 6, 1992
    Assignee: Zimmer, Inc.
    Inventors: Robert W. Atkinson, Michael J. Laco
  • Patent number: 5147330
    Abstract: A cradle for use in blood donating processes comprises surface (2) which is intended to support a blood-collecting bag and to be rocked reciprocatingly on an axle (4) which extends perpendicularly to the surface, by means of a crank (5, 7). The cradle is provided with a weight measuring device (8) which functions to measure the quantity of blood that has flowed into the bag, and is also fitted with a clamping device (11) which functions to clamp-on or squeeze the hose such as to prevent blood from flowing therein and which is operable electromagnetically. The cradle is further provided with a control circuit (21) which is constructed to control at least the clamping device (11).
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: September 15, 1992
    Assignee: Ljungberg & Kogel
    Inventor: Arne Kogel
  • Patent number: 5053002
    Abstract: An angioscope has irrigation system with at least two presettable irrigant flow rates. A footswitch under manual control is operatively connected to a roller pump for switching from a high first flow rate to a low second flow rate. Upon an initial filling of a blood vessel under observation with clear irrigant at the high flow rate, the operator switches to the low flow rate. The rate of fluid flow may alternatively be continuously variable under manual control.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: October 1, 1991
    Assignee: Olympus Corporation
    Inventor: David E. Barlow
  • Patent number: 4946439
    Abstract: A dual source parenteral infusion system includes a primary controller which controls the flow rate of a parenteral solution, a display which displays parameters associated with the delivery of a primary solution, and pushbuttons for entering solution delivery parameters into the controller. The primary controller communicates with a secondary infusion module which is programmed to deliver solution from a secondary source, with the flow rate being controlled by the primary controller. The secondary infusion module includes a display for displaying parameters associated with the delivery of the secondary solution and a drop detector, and mounts about a drip chamber for the secondary solution. The module may also include pushbuttons for entering fluid delivery parameters for the secondary solution into the module.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: August 7, 1990
    Assignee: Critikon, Inc.
    Inventor: Philip N. Eggers
  • Patent number: 4923449
    Abstract: An apparatus for the collection of blood via a collapsible inflow pipe into an inflatable bag having an anticoagulant prefilled therein. The bag is placed on a weighing platform coupled to a load cell, which produces an electric voltage signal representative of the weight of the blood being collected in the bag. The load cell is mounted on a swing cradle capable of oscillation about a horizontal axis, so that the bag is shaken during blood collection for intimately intermingling the collected blood and the anticoagulant. When a predetermined amount of blood is collected, as ascertained from the voltage output of the load cell, a controller actuates a collection stop mechanism thereby causing the same to tightly grip and collapse the inflow pipe.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: May 8, 1990
    Assignees: Kabushiki Kaisha Tiyoda Seisakusho, Kawasumi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Matsumi Toya, Yasuyuki Miyairi
  • Patent number: 4892524
    Abstract: An apparatus for administering a volumetric flow of parenteral liquids into a patient's system, in which the quantity of liquid flowing into the system may be easily adjusted, is disclosed. The apparatus includes two separate hydrostatic head pressure systems. The first head pressure is from a container, through a metering device with an adjustable fixed orifice to a regulator located a fixed distance below the container. The second head is from the regulator, which is designed to prevent air flow through it, to the patient. Several embodiments of the metering device and of the regulator are disclosed.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: January 9, 1990
    Inventor: Gordon Smith
  • Patent number: 4762518
    Abstract: The principal of total internal reflection is utilized in sounding an alarm in a medical fluid infusion system when a downstream blockage occurs. A miniature prism is mounted in a cavity in a rigid exterior tube. The infusing fluid flows in a plastic tubing along the central channel of the rigid tube. The plastic tubing in the interior of this exterior rigid tube is diametrically expansive with an unpressurized outside diameter which is less than the inside diameter of said rigid exterior tube. A light source and light detector is positioned adjacent to the equilateral planes of the prism mounted in the rigid tube.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: August 9, 1988
    Assignee: Pancretec, Inc.
    Inventor: Stephen J. Kreinick
  • Patent number: 4752289
    Abstract: An infusion pump pressure monitor comprises a drive (26, 27, 30, 31) for an infusion pump, a pressure sensor (38) to monitor the delivery pressure downstream of the pump, and a programmed computer (34, 35). The computer (34, 35) is programmed to monitor the maximum delivery pressure that occurs during an initial operating period, and then, subsequently to monitor the delivery pressure downstream of the pump for the remainder of the delivery period of the infusion pump. The programmed computer (34, 35) is programmed to disable the drive (26, 27, 30, 31) for the infusion pump if the monitored delivery pressure differs by more than a predetermined amount from the maximum pressure monitored during the initial operating period. The infusion liquid is carried by a disposable infusion set having a pressure responsive chamber (1) located in a key-hole shaped slot (44) in the pressure monitor.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: June 21, 1988
    Assignee: Vi-Tal Hospital Products Ltd.
    Inventors: Alan S. Balding, Nigel F. Carter, Paul F. Frampton, Vincent A. Rosso
  • Patent number: 4743228
    Abstract: The invention is directed to a fluid flow monitoring method and system for parenteral fluid delivery systems for use in situations, such as with sedentary patients, when wide pressure variations are not expected. The resistance of the fluid delivery system is determined from the ratio of pressure differences at high and low fluid flow rates to differences in the high and low fluid flow rates. The resistance is used to develop a pressure limit from the sum of the pressure at low fluid flow rates and the product of the resistance and the high fluid flow rate. The pressure limit is compared with the pressure monitored and if the pressure monitored exceeds the calculated pressure limit, an alarm is actuated to warn medical personnel of an occlusion or other fluid flow fault. Additionally, if the noise level (pressure) excess predetermined limits during the periods of low and high fluid flow, the pressure monitoring is terminated.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: May 10, 1988
    Assignee: Ivac Corporation
    Inventor: Robert D. Butterfield
  • Patent number: 4731058
    Abstract: A system for delivering a drug to a patient according to the preferred embodiment of the present invention is shown as including a plunger assembly reciprocally received in a reservoir for forcing the drug therefrom for delivery to the patient. The plunger assembly is axially advanced by the rotation of a lead screw rotatably mounted and axially movable with respect to the chassis. In a first axial position, the end of the lead screw deflects contacts of a switch member into electrical engagement which interrupts operation of the motor which rotates the lead screw. The lead screw is biased out of its first axial position such that the first end of the lead screw does not actuate the switch member and rotation of the lead screw is not interrupted.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: March 15, 1988
    Assignee: Pharmacia Deltec, Inc.
    Inventor: Phong D. Doan
  • Patent number: 4712590
    Abstract: A device for connecting two or more bulk compounding systems for mixing hyperalimentation solutions is described. The device allows electrical signals from each bulk compounding system to be connected to one another so that each bulk compounding system may act in concert with other bulk compounding systems to fill an individual receiving container with minimal modifications to the internal circuitry of an individual bulk compounding system.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: December 15, 1987
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: Aleandro Di Gianfilippo
  • Patent number: 4648872
    Abstract: An infusion pump has a removable reservoir including a piston and drive member. The drive member is an internally threaded elongated portion of the piston. A motor rotates a short drive screw, which engages the threads of the drive member to displace the piston in the reservoir. In one embodiment the piston is attached to the drive member by a severable central stem which breaks away to allow engagement with the drive screw. With the stem severed, the piston cannot be retracted, or the reservoir refilled. Other safety features are shown for locking the displaced piston in the reservoir. A digital metering system has a safety circuit to prevent dangerous failure modes of the rotation sensor and motor drive systems.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: March 10, 1987
    Inventor: Dean L. Kamen
  • Patent number: 4617020
    Abstract: A detector and counter for drainage devices is provided which will detect the passage of air through an underwater seal chamber. A signal is transmitted as a result of the detection of the presence of air or a bubble within an underwater seal chamber and an output circuit responsive to these signals measures the time interval between bubbles. In addition, a counter counts the total number of bubbles passing through the underwater seal over a selected period of time. The bubble detector when used with a pleural drainage device provides a diagnostic tool for a physican in determining the condition of a patient with a pleural air leak by indicating the elapsed time between bubbles and the total volume of air leak over the selected period of time.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: October 14, 1986
    Assignee: BioResearch Inc.
    Inventor: Robert J. Kurtz
  • Patent number: 4613328
    Abstract: A bio-medical injector apparatus comprising a base unit having a skin engaging portion disposed at an angular orientation with respect to the longitudinal axis of the base unit for supporting and maintaining a hypodermic needle at an optimum angular orientation for effecting an injection procedure, a carriage assembly reciprocally mounted on the base unit and carrying the hypodermic needle simultaneously therewith, a motor drive unit operably connected with the hypodermic needle for the preloading thereof with a suitable medication, a solenoid secured to the base unit and operably connected with the carriage assembly for a controlled reciprocation thereof for effecting the injection operation of the needle, and an electronic circuitry operably connected between a power supply and the motor drive and the solenoid for creating the logic necessary to perform the functions of the injector apparatus.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: September 23, 1986
    Inventor: Cecil Boyd