Sensor Controls Pump, Motor, Or Pressure Driven Means Patents (Class 604/67)
  • Patent number: 8034020
    Abstract: An optical flow sensor is provided, including a heater configured to heat an aliquot of fluid in an adjacent fluid-delivery channel and a sensor disposed adjacent to the fluid-delivery channel downstream from the heater. The sensor is configured to illuminate fluid in the fluid-delivery channel, to collect reflected light from the illuminated fluid, and to determine when the heated aliquot passes the sensor based upon an amount of the reflected light. A method for determining a flow rate of a fluid is also provided.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: October 11, 2011
    Assignee: Carefusion 303, Inc.
    Inventor: Paul Dewey
  • Patent number: 8034018
    Abstract: The present invention provides a surgical system 10 for aspiration of a biological material comprising a source of irrigation fluid 24, a collection cassette 30, a pump 40 for creating a vacuum in the collection cassette 30, a handpiece 50 applied to a surgical area for infusing irrigation fluid and for aspirating a biological material, conduits 60 and 62 connecting the handpiece to each of the source of irrigation fluid and the collection cassette, and means 70 for stopping the pump and preventing creation of vacuum within the conduit 62 and collection cassette 30 after receiving a stop signal.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 11, 2011
    Assignee: Bausch & Lomb Incorporated
    Inventor: Mark Ian Lutwyche
  • Patent number: 8034019
    Abstract: A highly reliable and robust functioning liquid infusion system for use in biomedical applications comprises a dual microcontroller system where the first microcontroller is configured to administer the liquid and the second microcontroller is configured to monitor the accurate functioning of the system and various performance parameters such as flow rate of liquid, presence of leaks or blocks in the liquid passage, level of drug in the cartridge and battery condition. The liquid injection portion comprises a cylindrical airtight liquid holder or drug cartridge with a movable internal piston that is in contact with a movable stem, and a micromotor, which controls the drug delivery. The system is programmable with a dosing system stored into the driver/monitor microcontrollers. A low power LCD module is used to display the operating parameters with multiple language interface and alarm conditions, if any.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: October 11, 2011
    Inventors: Bipin Nair, Krishnan Guruvayurappan, Harish Kumar
  • Publication number: 20110245760
    Abstract: A fluid delivery device is provided for delivering fluid to a target site such as an intervertebral disc during discography. The fluid delivery device includes pressure and volume sensors to determine the pressure and the volume of the fluid delivered to the intervertebral disc. The fluid delivery device is hand-held during use and includes a syringe assembly having a plunger with threads that enables controlled discharge of the fluid from the fluid delivery device by rotating the plunger in a housing of the fluid delivery device. The fluid delivery device includes a communication module to wirelessly transfer data to an external device outside of a sterile field, while the fluid delivery device is in the sterile field. The fluid delivery device may also include a physiological sensor to monitor involuntary pain responses based on changing physiological parameters such as increases in body temperature or blood pressure.
    Type: Application
    Filed: June 13, 2011
    Publication date: October 6, 2011
    Applicant: STRYKER CORPORATION
    Inventors: Karen L. Smit, Steven J. Carusillo
  • Patent number: 8025634
    Abstract: Programmable infusion systems and method for controlled infusion of diagnostic or therapeutic substances (e.g., drugs, biologics, fluids, cell preparations, etc.) into the bodies of human or animal subjects.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: September 27, 2011
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Ahmad-Maher Moubayed, Oscar E. Hyman, David N. White, Larry L. Wilson, John W. Stevenson, Jay G. Moubayed, Linda Thomas
  • Publication number: 20110230825
    Abstract: A disposable cassette for mixing a drug in a vial includes a liquid inlet for connection to a liquid supply, a first vial spike, a second vial spike, a chamber and a valve mechanism. The chamber, the first and second vial spikes, and the liquid inlet are in fluid communication with each other. The valve mechanism may be actuated to control flow between the chamber, the vial receptacles and the liquid inlet.
    Type: Application
    Filed: September 20, 2010
    Publication date: September 22, 2011
    Applicant: DEKA Products Limited Partnership
    Inventors: Dean Kamen, Marc A. Mandro, Jason A. Demers
  • Publication number: 20110224603
    Abstract: A device for detecting at least one flow parameter includes a fluidic series connection of a first flow restriction, a first measurement area, a second flow restriction, and a second measurement area. A first sensor is provided for detecting a quantitative first measure of a pressure existing in the first measurement area. A second sensor is provided for detecting a quantitative second measure of a pressure existing in the second measurement area. An evaluator is provided which is configured to determine, while using the measures detected by the first and second sensors, a flow rate of a fluid flowing through the series connection, and/or to determine whether there is an occlusion of the first flow restriction, of the second flow restriction, or of a fluid area adjoining the second measurement area.
    Type: Application
    Filed: March 21, 2011
    Publication date: September 15, 2011
    Inventor: Martin RICHTER
  • Patent number: 8016783
    Abstract: A drug delivery system detects a cardiac condition indicative of a need for increasing a cardiac metabolic level and, in response, releases a drug into tissue or blood to shift a source of metabolically synthesized energy fueling cardiac contraction from fatty acid to glucose. One example of such a system includes an implantable device detecting an ischemia and a transdermal drug delivery device delivering a drug when an ischemic condition is detected. Another example of such a system includes one or more implantable devices detecting a predefined change in cardiac metabolic level and delivering a drug when the change is detected. Such systems are applied to treat, for example, patients suffering ischemia and/or heart failure and patients having suffered myocardial infarction.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: September 13, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Joseph M. Pastore, Julio C. Spinelli, Helen L. Reeve, Jeffrey Ross, Rodney W. Salo, Allan Shuros
  • Patent number: 8012120
    Abstract: A system and method to automatically initiate an injection procedure of a medicament into a patient. In the system, a delivery assembly includes an injector for infusing the medicament into the patient. Further, the system includes a monitor for detecting a parameter characteristic of the procedure, for instance, a pressure indicative of a partial vacuum between the injector and the injection site, a pressure exerted by the patient against the delivery assembly, a conductance, a capacitance, or an optical blood reading. Also, the system includes a timer for determining compliance of the parameter within a predetermined range during a first time interval. In response to the timer, an actuator initiates the injection procedure at the expiration of the first time interval. Further, the actuator may stop the injection procedure if the parameter is outside the predetermined range during a second time interval.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: September 6, 2011
    Assignee: Avant Medical Corp.
    Inventors: John B. Slate, Michael W. Burk
  • Patent number: 8007460
    Abstract: A patient hydration system including an infusion device for administering hydration fluid to a patient, and a hydration fluid measurement device responsive to a source of hydration fluid, a patient urine output measurement device. A controller is responsive to the hydration fluid measurement device and the patient urine output measurement device. The controller operates the infusion device, in response to the patient urine output measurement device and the hydration fluid measurement device, to hydrate the patient based on the patient's urine output. The controller also monitors the operation history of the infusion device thereby providing redundancy in the measurement of the amount of hydration fluid administered to the patient.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: August 30, 2011
    Assignee: PLC Medical Systems, Inc.
    Inventors: Mark Gelfand, Howard R. Levin
  • Publication number: 20110201998
    Abstract: A medication delivery device includes a housing, a door coupled to the housing and moveable between a closed position and an open position. The door permits insertion of a medication container, containing liquid medication, into the housing in the open position. A door opening mechanism is coupled to the door. A push member is axially moveable between a retracted position and a non-retracted position and located external to the medication container. The push member enters the medication container and pushes the liquid medication out of the medication container. A lock mechanism is coupled to the door opening mechanism and prevents opening of the door when the push member is in the non-retracted position inside the medication container, wherein the lock mechanism automatically unlocks the door opening mechanism when the push member is in the retracted position.
    Type: Application
    Filed: April 28, 2011
    Publication date: August 18, 2011
    Applicant: ARES TRADING S.A.
    Inventors: Vincent Pongpairochana, Timothy John MacLean, Robert Prasser, Gerhard Lauchard, Werner Wurmbauer, Gerhard Kogler
  • Publication number: 20110202032
    Abstract: In various embodiments, actuation of a drug-delivery pump is controlled based on a change in a condition of the pump.
    Type: Application
    Filed: August 18, 2010
    Publication date: August 18, 2011
    Inventors: Jason Shih, Jeffrey Brennan, Fukang Jiang, Sean Caffey
  • Patent number: 7998111
    Abstract: An improved pump, reservoir and reservoir piston are provided for controlled delivery of fluids. A motor is operably coupled to a drive member, such as a drive screw, which is adapted to advance a plunger slide in response to operation of the motor. The plunger slide is removably coupled to the piston. A method, system, and an article of manufacture for automatically detecting an occlusion in a medication infusion pump is provided. The electrical current to an infusion pump is measured. Based on measurements of one or more variables, the infusion pump detects whether there is an occlusion in the system. The methods of detecting occlusions may be dynamic.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: August 16, 2011
    Assignee: Medtronic Minimed, Inc.
    Inventors: Sheldon B. Moberg, Ian B. Hanson, Cary D. Talbot
  • Patent number: 7998110
    Abstract: Current methods of delivering drug usually require a certain degree of human intervention. For example, a doctor, a paramedic or a patient is required to inject insulin manually when the blood sugar level becomes low. This invention provides a medical device for use with a patient for performing at least one of the functions of delivering drug and performing physical therapy to the patient. The device of this invention includes a sensor for measuring at least one parameter from the patient, an analyzer for analyzing the parameter to determine appropriate function to be carried out on the patient by said medical device, and at least one actuator to perform at least one of the functions of delivering drug and performing physical therapy.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: August 16, 2011
    Assignee: Hong Kong Polytechnic University
    Inventors: Wallace Woon-Fong Leung, Samuel Chun-Lap Lo
  • Patent number: 7993300
    Abstract: The present invention relates to a method for ensuring a constant target speed of a battery driven electrical motor, the battery driven electrical motor being adapted to move a piston rod in an injection device so as to inject a set dose of medicine from the injection device, the method comprising the steps of setting a first target speed to be reached by the motor, determining whether the first target speed can be reached, and, if the first target speed can be reached, maintaining the first target speed until a set dose of medicine has been injected from the injection device, or if the first target speed cannot been reached, setting a second target speed.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: August 9, 2011
    Assignee: Novo Nordisk AS
    Inventors: Kim Nyholm, Bo VestergÄrd Jensen
  • Patent number: 7993297
    Abstract: Equipment for controlling blood flow in an extra-corporeal blood circuit, comprising at least a first sensor (11), designed to measure an arterial pressure (Part) upstream of a peristaltic pump (9); at least a second sensor (12), designed to measure an angular velocity (?) of the peristaltic pump; a memory (14) designed to store at least one set value (Qset) of the desired blood flow through the access branch, and a calibration function (F) in to at least the variables (v1), related to the angular velocity (?) of the pump, (v2), related to the arterial pressure (Part) in the portion of the said access branch upstream of the peristaltic pump, (v3), related to an actual flow of blood (Qactual) through the said access branch; and at least one control unit (13), capable of calculating an actual flow value (Qactual) by applying the function F to the values of angular velocity and arterial pressure (Part, ?) measured by the sensors; comparing the actual flow (Qactual) with the desired flow (Qset); and varying the a
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: August 9, 2011
    Assignee: Gambro Lundia AB
    Inventors: Luca Vinci, Francesco Fontanazzi
  • Publication number: 20110190693
    Abstract: A computer controlled electric syringe includes: a piston unit including a piston being configured to press and move a rubber plug of a cartridge by a second end to discharge a medicinal solution from a cartridge through an injection needle; a ball screw having a screw shaft and a nut portion that is screwed into the screw shaft, the screw shaft being loosely inserted into the hollow portion of the piston through the opening, the nut portion being coupled to the piston; a screw shaft supporting portion rotatably supporting the screw shaft of the ball screw; a rotation preventing portion configured to prevent the nut portion of the ball screw from being rotated; and a piston supporting portion supporting the piston to be movable in an axial direction of the screw shaft along with the nut portion by the rotation of the screw shaft.
    Type: Application
    Filed: May 24, 2010
    Publication date: August 4, 2011
    Applicant: NIPPON SHIKA YAKUHIN KK.
    Inventors: Minoru TAKATSUKA, Kenichi NAKAZATO
  • Publication number: 20110190694
    Abstract: A wearable infusion pump assembly. The wearable infusion pump assembly includes a reservoir for receiving an infusible fluid and a fluid delivery system configured to deliver the infusible fluid from the reservoir to an external infusion set. The fluid delivery system includes a controller, a pump assembly for extracting a quantity of infusible fluid from the reservoir and providing the quantity of infusible fluid to the external infusion set, the pump assembly comprising a pump plunger, the pump plunger having distance of travel, the distance of travel having a starting position and an ending position, at least one optical sensor assembly for sensing the starting position and ending position of the pump plunger distance of travel and sending sensor output to the controller, and a first valve assembly configured to selectively isolate the pump assembly from the reservoir, wherein the controller receives the sensor output and determines the total displacement of the pump plunger.
    Type: Application
    Filed: December 29, 2010
    Publication date: August 4, 2011
    Applicant: DEKA Products Limited Partnership
    Inventors: Gregory R. Lanier, JR., Larry B. Gray, Richard J. Lanigan, Dean Kamen, Stephen L. Fichera, John M. Kerwin
  • Patent number: 7988728
    Abstract: A demand responsive physiological control system for use with a rotary blood pump; said system including a pump controller which is capable of controlling pump speed of said pump; said system further including a physiological controller, and wherein said physiological controller is adapted to analyse input data relating to physiological condition of a user of said pump; and wherein said physiological controller determines appropriate pumping speed and sends a speed control signal to said pump controller to adjust pump speed; said system further including a physiological state detector which provides said input data indicative of at least one physiological state of said user, in use, to said physiological controller.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: August 2, 2011
    Assignee: Thoratec Corporation
    Inventor: Peter Joseph Ayre
  • Patent number: 7981073
    Abstract: A pressure and a vision regulation method and device for irrigation of a body cavity (1), in which an inflow liquid pump (2) pressurizes the irrigation liquid in a feed line (13) and an outflow device (3) or an external suction source (20) drains the irrigation liquid from the body cavity (1) through a tubing (16) into a waste container (17). A control unit (4) controls either the inflow liquid pump (2) only or both the inflow liquid pump (2) and the outflow device (3) depending on an inflow irrigation liquid pressure from a pressure sensor (5). The method and the device are combined with a method for detecting blood cells, red blood cells, haemoglobin and/or debris in liquid coming from a surgical site to provide an automatic control and rinsing system with clear vision in the viewing area of the operational site.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: July 19, 2011
    Inventors: Anders Möllstam, Sven Milton, Tomas Movin
  • Patent number: 7981280
    Abstract: An extracorporeal blood treatment apparatus includes a blood treatment unit, a treatment fluid circuit, and a blood circuit. The treatment fluid circuit has a treatment fluid pump for circulating treatment fluid around the treatment fluid circuit and through the blood treatment unit. The blood circuit has a dual chamber blood pump for circulating blood around the blood circuit and through the blood treatment unit. An arterial line withdraws blood from a patient and delivers the withdrawn blood to the blood treatment unit. A venous line returns the treated blood to the patient. The arterial and venous lines can be switched between a first condition in which they are connected to the patient and a second condition in which they are disconnected from the patient and connected to each other for recirculation of blood through the blood circuit.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: July 19, 2011
    Assignee: Renal Solutions, Inc.
    Inventors: David J. Carr, Stephen R. Ash
  • Publication number: 20110172594
    Abstract: Systems and methods for detecting an occlusion in a fluid delivery device are disclosed. The system includes a fluid delivery tube, an occlusion detection sensor configured to be coupled to the fluid delivery tube and further configured to detect occlusion within the fluid delivery tube. The fluid delivery tube includes an occlusion detection portion. The occlusion detection sensor is further configured to detect alteration of a shape of the occlusion detection portion when at least one condition occurs within the fluid delivery tube.
    Type: Application
    Filed: January 10, 2011
    Publication date: July 14, 2011
    Applicant: MENDINGO, LTD.
    Inventors: Ofer Yodfat, Gavriel J. Iddan, Gil Senesh
  • Patent number: 7976508
    Abstract: A medication safety system includes a panel mounted to an IV pole above a multi-channel infusion pump also mounted to the IV pole. The panel includes multiple RFID readers for reading the RFID tags placed on each of the medication containers mounted to the panel. The pump includes a controller that communicates with the RFID readers at the panel to receive the information read by the RFID readers and automatically program the respective pump channel. A verification program verifies that the medication delivery information from the containers matches the patient identified for the pump and the programming parameters of the pump fall within acceptable ranges. In another aspect, the panel contains multiple vibration devices to impart vibrations to the medication of each of the containers mounted to the panel. Those vibrations are sensed by the particular pumping channel to confirm that the correct channel has been programmed for that medication.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: July 12, 2011
    Assignee: CareFusion 303, Inc.
    Inventor: Robert E. Hoag
  • Patent number: 7976493
    Abstract: A wearable infusion device comprises a reservoir that holds a liquid medicament, an outlet that delivers the liquid medicament to a patient, and a pump that displaces a volume of the liquid medicament to the outlet when actuated. The device further includes a lock-out that disables actuation of the device responsive to a predetermined condition of the device. The lock-out is resettable.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: July 12, 2011
    Assignee: Calibra Medical, Inc.
    Inventors: Brett J. Carter, John M. Adams
  • Publication number: 20110166512
    Abstract: A compact and one time use, self-administration device (10) for administering medication is disclosed. The device includes a housing (12) having a start button (26), a status indicator (28), a window (30), and a surface removably attachable to a user. The device (10) has a cartridge holder (34) providing in an aseptic environment a cartridge (32) containing the medication. The cartridge (32) is viewable through the cartridge holder (34) and the window (30). An included drive unit (42) provides a movable plunger (126) that breaks through a sterile barrier (130) of the cartridge holder (34) to dispense the medication from the cartridge (32) to an hollow needle (38) for administering the medication into the user.
    Type: Application
    Filed: September 8, 2009
    Publication date: July 7, 2011
    Applicant: ROCHE DIAGNOSTICS INTERNATIONAL AG
    Inventors: Marcel Both, Kurt Friedli, Heiner Kaufmann, Juerg Liniger, Fabio Oester, Allen Pearson, Daniel Peter, Dominik Scherrer, Simon Scheurer, Oliver Shergold, Roger Siegenthaler, Sandra Galbraith
  • Publication number: 20110160654
    Abstract: A delivery system for delivering fluidic media may include a second housing configured to be selectively operatively engaged with and disengaged from a first housing portion adapted to be carried by a user. One of the housing portions may support a reservoir for containing fluidic media and a plunger head moveable within the reservoir. A drive device may be supported by the other of the housing portions for coupling with the reservoir upon the housing portions being operatively engaged. A first interactive element may be supported on the first housing portion for interacting with a second interactive element supported on the second housing portion. Circuitry may be configured to detect an interaction between the interactive elements and configured to provide a signal or a change in state in response to the housing portions being operatively engaged and an interaction between the interactive elements being detected.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Inventors: Ian B. Hanson, Paul F. Bente, IV
  • Publication number: 20110160655
    Abstract: A delivery system for delivering fluidic media to a user having a second housing portion configured to be selectively operatively engaged with and disengaged from a first housing portion, the first housing portion and the second housing portion configured to be slidable relative to each other to operatively engage each other; and a fluid connector supported by one the housing portions in a position to engage a reservoir supported by an other of the housing portions in a case where the first housing portion and the second housing portion are slid relative to each other to operatively engage each other.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Inventors: Ian B. Hanson, Paul F. Bente, IV
  • Patent number: 7967778
    Abstract: RFID chip (214) having various types of data is mounted on liquid syringe (200). Chemical liquid injector (100) obtains the various types of data from RFID chip (214) to perform a predetermined operation in accordance with at least some of the various types of data. For, example, a variable pattern for liquid can be recorded on RFID chip (214) of liquid syringe (200) to allow chemical liquid injector (100) to inject the liquid in accordance with the predetermined variable pattern. Thus, a large amount of data can be easily input to the chemical liquid injector to perform the various operations.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: June 28, 2011
    Assignee: Nemoto Kyorindo Co., Ltd.
    Inventors: Shigeru Nemoto, Nobuhisa Tano
  • Patent number: 7967783
    Abstract: An automatic pump relay system includes controllers coupled to drivers for sequentially discharging fluid from a plurality of medication containers into a coupler having a reflux barrier from which fluid is administered to a patient. The internal fluid pressure of the coupler is determined by a pressure sensing device or devices that provide signals to the controllers that, based at least on the sensor signals, cause the drivers to operate in reverse and forward directions so as to rapidly decrease and raise the fluid pressure within the coupler during a relay from an empty syringe to a filled syringe, thereby avoiding bolus formation and an interruption in infusion therapy. Independently operable syringes pumps are contemplated to be connected in relay fashion to form a modular system. An associated method is also disclosed wherein a fluid administration pressure is stored for use as a reference during a syringe changeover.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: June 28, 2011
    Assignee: CareFusion 303, Inc.
    Inventor: Pierre Rebours
  • Publication number: 20110152825
    Abstract: An administering device for administering a fluid product through the use of pressure, the device being modular, including a base unit and a cartridge, the base unit containing driving components and the cartridge adapted to be connected detachably to the base unit, wherein the cartridge has a fluid reservoir and a pressure monitoring device having a pressure sensor and a transfer device operably coupled to the pressure sensor, wherein the pressure monitoring device can be activated by an externally applied, alternating electromagnetic field, whereby data can be read, without contact, using the fluid pressure. In one embodiment, the pressure sensor contains a snap disk and the transfer device is an RFID transponder, wherein the base unit comprises a pressure reading device, which is constructed for producing a corresponding alternating electromagnetic field and, depending on the response to the alternating field, for determining a fluid pressure-dependent property of the transfer device.
    Type: Application
    Filed: November 22, 2010
    Publication date: June 23, 2011
    Inventor: Rolf Marggi
  • Publication number: 20110152756
    Abstract: An expiration time of a therapeutic fluid delivered by an implantable fluid delivery device is employed to calculate a fill volume and determine a refill interval for the fluid. The expiration time of the therapeutic fluid may be based on or dictated by a stability time set by the manufacturer of the therapeutic fluid, a clinician treating a patient to whom the fluid is to be delivered, the manufacturer of the device delivering the fluid, or combinations thereof.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Applicant: Medtronic, Inc.
    Inventor: Touby A. Drew
  • Publication number: 20110152824
    Abstract: Embodiments are directed to portable infusion devices, systems, and methods of using the same for dispensing materials. In some cases, the devices, systems and methods may be used for infusing a material such as medicament, e.g., insulin, into a body in need thereof.
    Type: Application
    Filed: July 29, 2010
    Publication date: June 23, 2011
    Applicant: TANDEM DIABETES CARE, INC.
    Inventors: Paul M. DiPerna, David Brown, Mike Rosinko, Dan Kinacde, Michael Michaud, John Nadwoeny, Geoffrey A. Kruse, Thomas R. Ulrich
  • Publication number: 20110152757
    Abstract: Medicinal fluid delivery systems and methods for priming the same are disclosed. The systems may be configured to measure an electro-transmissive quality of a medicinal fluid when: medicinal fluid is dispensed into a fluid delivery path, a proximal end of the fluid delivery path is in contact with a first electrode, and the distal end of the fluid delivery path is in contact with a second electrode. Methods for priming medicinal fluid delivery systems may include dispensing a medicinal fluid through a fluid delivery path, sensing an electro-transmissive quality of the medicinal fluid, and determining that the fluid delivery path is full based on the electro-transmissive quality.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.
    Inventors: Timothy L. Beck, Janette Allen, David Burke
  • Publication number: 20110152829
    Abstract: A patient fluid care system that provides an integrated solution for managing patient fluids by precisely controlling one or more infusion pumps; monitoring real-time patient sensors, and pharmaceutical information; and deriving patient status and the status of pharmaceuticals administer to the patient based upon such monitoring and controlling; and automatically adjusting infusing parameters based upon the real-time patient, infusion, and pharmaceuticals information and derived patient status and the pharmaceuticals levels.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 23, 2011
    Inventor: Yasuhiro Kawamura
  • Patent number: 7963946
    Abstract: Programmable infusion systems and method for controlled infusion of diagnostic or therapeutic substances (e.g., drugs, biologics, fluids, cell preparations, etc.) into the bodies of human or animal subjects.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: June 21, 2011
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Ahmad-Maher Moubayed, Oscar E. Hyman, David N. White, Larry L. Wilson, John W. Stevenson, Jay G. Moubayed, Linda Thomas
  • Publication number: 20110144574
    Abstract: A system for delivery of a volume of infusible fluid. The system includes a controller configured to calculate a trajectory for delivering infusible fluid, the trajectory comprising at least one volume of fluid, and determine a schedule for delivering the at least one volume of fluid according to the trajectory, wherein the schedule comprising an interval and a volume of infusible fluid for delivery. The system also includes a volume sensor assembly for determining the at least one volume of fluid delivered, wherein the controller recalculates the trajectory based on the volume of fluid delivered.
    Type: Application
    Filed: July 15, 2010
    Publication date: June 16, 2011
    Applicant: DEKA Research & Development Corp.
    Inventors: Dean Kamen, John M. Kerwin, Gerald M. Guay, Larry B. Gray, Richard J. Lanigan, Stephen L. Fichera, Colin H. Murphy, Thomas F. Soldau, David Blumberg, JR.
  • Patent number: 7959605
    Abstract: An angiographic injector system includes a manifold and valve which selectively connects either a syringe pump or a low pressure system to a catheter which is inserted into a patient. The valve is normally biased to a state which connects the low pressure system to the catheter for pressure monitoring, saline flushing, or aspirating functions. When an injection is to be made, the valve automatically switches so that the low pressure system is disconnected and not exposed to high pressure, while the syringe pump is connected through the manifold to the catheter.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: June 14, 2011
    Assignee: Acist Medical Systems, Inc.
    Inventors: Douglas J. Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
  • Publication number: 20110137241
    Abstract: A method of detecting an occlusion for an infusion therapy in one embodiment includes: monitoring an output signal from a flowrate sensor for a pulsatile fluid flow having a frequency range, the pulsatile flow being through a fluid pathway to a patient; acquiring a data set that includes the output signal as a function of time; filtering the data set with a noise rejection filter to produce a filtered data set; performing spectra analysis on the filtered data set to determine a strength of the output signal in a frequency domain; calculating a signal strength for the frequency range using the strength of the output signal in the frequency domain; and comparing the signal strength of the range to at least one threshold level to determine if an occlusion is present during the infusion therapy.
    Type: Application
    Filed: January 28, 2011
    Publication date: June 9, 2011
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Jorge A. DelCastilio, Atif Yardimci
  • Publication number: 20110137240
    Abstract: A holographic occlusion detection system has a white-light holographic label placed onto a sensing portion or surface of a pressure sensor connected to infusion tubing. The pressure sensor at the sensing portion can have a relatively thin wall section and may be wider and flatter than a normal cross section of the infusion tubing. The label is then illuminated by a polychromatic light source, and the light reflected off the holographic label is then received by a photodetector. Pressure changes within the tubing cause a change in orientation of the white-light holographic label, thereby resulting in a shift in the peak wavelength of the reflective light sensed by the photodetector. This shift in wavelength can then be calibrated to the swelling of the sensing portion so that pressure within the infusion line can be calculated. In another variation, monochromatic light is reflected off a holographic label, and pressure changes are detected by measuring the amplitude of the reflected light.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 9, 2011
    Inventor: Christopher Wiegel
  • Publication number: 20110137239
    Abstract: Embodiments relate to systems, methods and devices for delivering a drug or other therapy to a patient with an ambulatory infusion pump configured to provide a series of tolerance-building steps leading up to a plateau delivery rate. The plateau delivery rate is maintained until the prescribed amount of drug or therapy fluid is delivered to the patient. Embodiments of the invention include providing the patient or other user with a mechanism to decrease, or step down, the therapy delivery rate if a tolerance was not achieved at a lower rate, and providing notifications prior to a step up in a dosage delivery rate.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 9, 2011
    Inventors: David DeBelser, Clinton Robert Hetchler, David Pardee Sours, Michael Wade Kersch
  • Patent number: 7955289
    Abstract: A method and apparatus for controlling blood withdrawal and infusion flow rate with the use of a pressure controller. The pressure controller uses pressure targets based upon occlusion limits that are calculated as a function of flow. The controller has the ability to switch from controlling withdrawal pressure to controlling infusion pressure based upon the detection of an occlusion. The controller distinguishes between partial and total occlusions of the withdrawal vein providing blood access. Depending on the nature of occlusion, the controller limits or temporarily reverses blood flow and, thus, prevents withdrawal vessel collapse or reverses blood flow to quickly infuse blood into the vessel without participation from operator.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: June 7, 2011
    Assignee: CHF Solutions, Inc.
    Inventors: John O'Mahony, Mark Gelfand, Edward G. Rychlick
  • Publication number: 20110124996
    Abstract: Diabetes health management systems for use in portable devices having and methods thereof having a user interface, a processor, a memory, and a communication circuit are disclosed. In one embodiment, a diabetes health management system has program code further including a communications module, a data module, a therapy module, and an analysis module. The communications module wirelessly couples the portable device to a plurality of user devices. The data module receives and stores into the memory blood glucose measurement values, insulin dosage data, and health data entries. The therapy module determines a therapy advice message based at least in part on the received blood glucose measurement values, the received insulin dosage data, and displays the therapy advice message on the user interface. The analysis module displays on the user interface a graphical representation of selected blood glucose measurement values, selected insulin dosage data, selected health data entries, or combinations thereof.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.
    Inventors: Robert E. Reinke, John F. Price, Paul J. Galley
  • Publication number: 20110125087
    Abstract: An infusion pump module includes a body case that includes an inflow channel for a liquid medicine; a first connecting flow channel; a second connecting flow channel; and an outflow channel; an auxiliary case joined to the body case and includes an auxiliary flow channel connected to the first and second connecting flow channel; a flow sensor that forms a measurement flow channel and measures a flow rate of the liquid medicine; an infusion pump that forms a transfer flow channel connected to the inflow channel and the first connecting flow channel, and discharges the liquid medicine by a piezoelectric element; a gasket that seals each connection portion between the inflow channel and the transfer flow channel and so on; and a cover case fastened to the body case to fix the gasket, the infusion pump, and the flow sensor to the body case.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 26, 2011
    Inventors: Yasunori SUGIMOTO, Teruki Kamada, Takashi Tomoyama
  • Patent number: 7947033
    Abstract: Wound fluid blood detection systems and methods are described that are operable in conjunction with reduced pressure wound treatment (RPWT) systems, as well as ancillary therapy and monitoring systems applied concurrently with RPWT systems. The blood detection monitor operates by optically characterizing the content of wound fluids to the extent of identifying percentage blood content. This identification relies upon the transmission of select wavelengths of light across a volume of wound fluid to a photo detector (connected to signal processing instrumentation) capable of quantifying the absorption characteristics of the fluid. The detection components may be implemented in conjunction with either a fluid flow conduit (i.e. the reduced pressure tubing directing fluid away from the wound dressing) or more directly in association with the materials that comprise the wound dressing positioned within the wound bed itself.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: May 24, 2011
    Assignee: KCI Licensing Inc.
    Inventors: Premnarayan Ganapathy, Royce Johnson, Tim Robinson, Christopher B. Locke
  • Publication number: 20110118662
    Abstract: Some embodiments of an infusion pump system may include an occlusion sensor that can be used to detect when an occlusion exists in the fluid path between the medicine reservoir and the infusion site on the user's skin. Such an occlusion may occur, for example, when the fluid flow line (e.g., a cannula, infusion set tubing, or the like) is kinked. If the medicine dispensation path to the user is occluded, the user may receive no dosage or a lower dosage of the medicine. As such, the occlusion sensor can be used to indicate when the fluid is flowing or not flowing, thereby permitting the infusion pump system to communicate an alarm to the user if an occlusion exists.
    Type: Application
    Filed: January 18, 2011
    Publication date: May 19, 2011
    Applicant: Asante Solutions, Inc.
    Inventors: Amit Mhatre, Jian Yao Wu, Mitchell Wenger, Steven Friedman
  • Publication number: 20110112472
    Abstract: A medical device fluid sensing system is provided. The system includes a transmitter array positioned in association with a fluid maintaining device, such as a reservoir in a cassette. Electrical circuitry is connected to the transmitter array and configured to cause the transmitter array to transmit light energy at a predetermined wavelength and producing a desired absorption coefficient based on expected conditions within the fluid maintaining device. The system also includes a receiver array configured to receive light energy transmitted through the fluid maintaining device and originating from the transmitter array, and a controller configured to determine fluid level in the fluid maintaining device based on conditions sensed by the receiver array. In one embodiment, three transmitters and three matching sensors are provided in a surgical cassette, and when optical energy having predetermined characteristics is provided to the transmitter array, the presence or absence of fluid is determined.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 12, 2011
    Applicant: Abbott Medical Optics Inc.
    Inventors: Jon D. Jacobson, Kyle Lynn
  • Patent number: 7938817
    Abstract: A patient hydration system and method wherein a urine collection system is connected to the patient. An infusion system is also connected to the patient. An infusion pump is connected to a source of hydration fluid. A control subsystem is responsive to the amount of urine output by the patient and configured to automatically adjust the infusion rate of the infusion pump based on the urine output by the patient.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: May 10, 2011
    Assignee: PLC Medical Systems, Inc.
    Inventors: Mark Gelfand, Howard Levin
  • Patent number: 7938796
    Abstract: Programmable infusion systems and method for controlled infusion of diagnostic or therapeutic substances (e.g., drugs, biologics, fluids, cell preparations, etc.) into the bodies of human or animal subjects.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: May 10, 2011
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Ahmad-Maher Moubayed, Oscar E. Hyman, David N. White, Larry L. Wilson, John W. Stevenson, Jay G. Moubayed, Linda Thomas
  • Patent number: 7941200
    Abstract: A system for determining drug administration information may comprise an input device providing for user input of feed forward information having a first parameter component and a second parameter component, a data storage device and a processor. The data storage device may have stored therein a map correlating values of the first and second parameters to drug administration information. The processor may be responsive to user input of the feed forward information to determine corresponding drug administration information according to the map.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: May 10, 2011
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Stefhan Weinert, Paul Galley, Ajay Thukral, Siva Chittajallu, Harvey Buck, Robin Wagner, Kym Marco, James R. Long, Steven Bousamra
  • Patent number: 7937134
    Abstract: A system for producing a contrast-enhanced medical image of a patient includes a source of a contrast or enhancement medium, a pressurizing unit in fluid connection with the source of contrast or enhancement medium, an energy source operable to apply energy to a region of the patient, an imaging unit providing a visual display of an internal view of the patient based upon a signal resulting from the energy applied to the region of the patient, and a control unit. In an embodiment, the signal is affected by a condition of the contrast or enhancement medium in the patient. To control the procedures, the control unit adjusts the condition of the contrast or enhancement medium in the patient based upon the signal. A communication interface preferably enables information between an injector subsystem and an imaging subsystem.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: May 3, 2011
    Assignee: MEDRAD, Inc.
    Inventors: Arthur E. Uber, Edward J. Rhinehart, Rosemary Almon-Martin, David M. Griffiths, Francis J. Sciulli, Walter Grumski, Vera Pagano, Karen Zelenski, Alan Hirschman