Sensor Controls Pump, Motor, Or Pressure Driven Means Patents (Class 604/67)
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Patent number: 7722598Abstract: A medical delivery system for delivering a fluid to a desired location within a body that includes a first member having an aperture, and a second member adapted to be positioned over the first member. The fluid to be delivered is contained within a fluid storage device, formed by at least one of the first member and the second member. The medical delivery system includes means for repositioning the first member relative to the second member between a first state preventing passage of the fluid through the aperture and a second state enabling passage of the fluid outward from the fluid storage device through the aperture.Type: GrantFiled: February 16, 2007Date of Patent: May 25, 2010Assignee: Medtronic, Inc.Inventors: Michael R. Ujhelyi, Rahul Mehra, Xiaoyi Min
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Publication number: 20100121257Abstract: A capacitive fluid level sensing arrangement for use in a medical device is provided. The arrangement includes at least one pair of conductive plates configured to increase and decrease the amount of electric charge stored in relation to the level of fluid within a fluid maintaining device, such as a reservoir. The conductive plates are electrically connected to a medical device and are configured to measure the charge stored between the plates and thus sense the fluid level. The electric circuit may communicate the measurement to an instrument host arrangement for operating a pump configured to remove fluid from the reservoir and move the fluid to a collector when the level exceeds a preset upper level amount. The instrument host arrangement may stop operating the pump when the fluid level is reduced to a preset lower level amount.Type: ApplicationFiled: November 7, 2008Publication date: May 13, 2010Applicant: Advanced Medical Optics, Inc.Inventor: David A. King
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Publication number: 20100114015Abstract: An infusion system, which may be a closed loop infusion system or “semi-closed-loop” system, uses state variable feedback to control the rate that fluid is infused into the body of a user. The closed loop infusion system includes a sensor system, a controller, and a delivery system. The “semi-closed-loop” system further includes prompts that are displayed or sounded or otherwise provide indications to the user prior to fluid delivery. The sensor system includes a sensor for monitoring a condition of the user. The sensor produces a sensor signal, which is representative of the condition of the user. The delivery system infuses a fluid into the user at a rate dictated by the commands from the controller. The system may use three state variables, subcutaneous insulin concentration, plasma insulin concentration, and insulin effect, and corresponding gains, to calculate an additional amount of fluid to be infused as a bolus and to be removed from the basal delivery of the fluid.Type: ApplicationFiled: May 1, 2009Publication date: May 6, 2010Applicant: MEDTRONIC MINIMED, INC.Inventors: Sami S. Kanderian, JR., Garry M. Steil
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Publication number: 20100106083Abstract: The present invention is a method of operating an ophthalmic hand piece. A connection between a tip segment and a limited reuse assembly is recognized. A type of tip segment connected to the limited reuse assembly is determined. Dosage information is received. A first input is received. In response to the first input, a heater is activated to heat a substance contained in a dispensing chamber. After the substance has reached a desired temperature range, the dosage information is used to control a distance a plunger travels. A second input is received. In response to the second input a motor is activated, and the drug is delivered into the eye.Type: ApplicationFiled: October 3, 2007Publication date: April 29, 2010Applicant: Alcon Research, Ltd.Inventors: Bruno Dacquay, Cesario Dos Santos, Casey Lind, Paul Hallen
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Publication number: 20100106082Abstract: An infusion pump uses sensors and a computer program to detect tubing in a tube-loading section of the pump. The pump and the computer program also measures one or more of the tubing outer diameter, outer circumference, inner diameter, inner circumference, and tubing wall thickness. The infusion pump utilizes proximity sensors, such as an ultrasonic sensor, a capacitive sensor, or even an air-in-line sensor to detect proximity between two infusion pump surfaces, such as the surfaces that clamp the tubing in the pump, to determine thickness. At least one of the clamping surfaces is equipped with sensors to indicate contact length of the tubing with the surface. Using these measurements, the tubing wall thickness and inner diameter can be determined. Knowing the actual tubing inner diameter, increased volumetric accuracy is possible, up to a three or four percent improvement over present measurements.Type: ApplicationFiled: October 24, 2008Publication date: April 29, 2010Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventor: Yu Zhou
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Publication number: 20100106076Abstract: It is described a drug delivery system (100) that is adapted to infuse a drug in a profile related to the activity status of a patient (595). The system comprises acceleration sensors (112), dedicated electronics (120) and software to monitor the patient's activity and maintain control over the drug-release profile. The described system (100) enables a personalized treatment of patients (595) by monitoring their individual activity status and coupling this information to a drug delivery following appropriate delivery profiles. The system (100) may be provided with a memory in order to store a time dependence of activity data. This time dependence may be used by physicians to monitor, support and adapt their therapy for the patients. The system (100) maybe realized as a closed-loop system for monitoring and treatment of various diseases such as Parkinson s disease. Accelerations sensors (112) may be used in order to directly monitor a positional state and/or motions of the patient's body.Type: ApplicationFiled: March 21, 2008Publication date: April 29, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Giovanni Nisato, Roelf Kassies, Johannes Johanna Van Herk
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Patent number: 7704236Abstract: This distribution device comprises a syringe body (30), a distributor (32), a feed tube (56) for a first active medical fluid opening into the syringe body (30), a tube (60) for the injection of this active fluid connected to a distal extremity (46) of the syringe body (30), a pressurized tube (64) designed to be connected to a patient through a pressurized line (12) and a tube (66) for the measurement of venous or arterial pressure. The pressurized, injection and measurement tubes open into a chamber (62) bounded within the body (32B) of the distributor (32). The device (2) comprises a flush tube (68) which is at least partly bounded by the body (32B) of the distributor (32), which opens into the chamber (62) and is fitted with a valve (70, 80) which can be operated manually.Type: GrantFiled: December 19, 2003Date of Patent: April 27, 2010Assignee: SEDATInventor: Pascal Denolly
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Patent number: 7704231Abstract: A hand-held, electronically controlled injection device (1) for injecting preset doses of liquid medications, having a housing (2) for receiving a cartridge (4) containing the liquid medication and having a contact surface (16) for contacting a patient's skin; and actuator elements (41) for moving the cartridge (4) within the housing (2) to and from the contact surface (16).Type: GrantFiled: February 17, 2005Date of Patent: April 27, 2010Assignee: Ares Trading S.A.Inventors: Vincent Pongpairochana, Timothy John MacLean, Robert Prasser, Gerhard Lauchard, Werner Wurmbauer, Gerhard Kogler
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Publication number: 20100100071Abstract: A system for controlling an infusion of fluid into living tissue includes a catheter shaped to be introduced within living tissue and operable to deliver a fluid to a location within the living tissue, a fluid infusion pump mechanically coupled to the catheter and operable to pump fluid through the catheter and, thereby, into the location, the fluid infusion pump having at least two fluid pumping states, a fluid pressure monitor fluidically coupled to the catheter and operable to measure a pressure of the fluid within the catheter, and a processor communicatively coupled to the fluid infusion pump and the fluid pressure monitor, the processor operable to select between the at least two fluid pumping states based upon the measured pressure of the fluid within the catheter.Type: ApplicationFiled: September 16, 2009Publication date: April 22, 2010Applicant: Engineering Resources Group, Inc.Inventor: CHRISTOPHER D. ROSS
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Publication number: 20100096019Abstract: A novel apparatus and associated methods for controlling the flow through a flow restrictor using a reshapable lumen. The lumen reshapes as a function of the pressure differential over the flow restrictor. Because flow rate is proportional by the fourth order of magnitude to the diameter of the lumen, small changes in the pressure differential allow for larger changes in the flow rate over conventional flow restrictor systems and provides for real time, fine-tuned adjustments to the flow rate.Type: ApplicationFiled: December 23, 2009Publication date: April 22, 2010Inventor: Paul Mario DiPerna
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Publication number: 20100100037Abstract: A medical pump system includes an input device for entering a command or a value of a pump programming parameter and a memory for storing a programming code. A processor is in communication with the memory and the input device in order to generate a display signal for an output device to generate one of a plurality of screens, such as near view and far view screens. The programming code is operable to display on a far view screen a plurality of medical therapy buttons that can be used to navigate directly to a near view programming screen. The far view screen can also concurrently display quick titration buttons that are associated with the medical therapy buttons and can be used to navigate directly to a quick titration screen without having to go to a general near view delivery screen or near view programming screen.Type: ApplicationFiled: November 30, 2009Publication date: April 22, 2010Applicant: HOSPIRA, INC.Inventors: Mihaela Cozmi, John Arrizza, John Erik Michael Palmroos
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Publication number: 20100082011Abstract: Detection of fluid conditions in an administration set. A light source is positioned to transmit an infrared light through administration set tubing and any fluid therein. A light sensor senses the infrared light transmitted through the tubing and generates an output signal. A frequency of the output signal is a function of an intensity of the light transmitted through the tubing. A processor receives and determines the frequency of the output signal, and compares the determined frequency to threshold frequency values to determine whether fluid is in the tubing. The processor also monitors the generated output signal to determine if the frequency of the output signal changes over time, and determines whether fluid is flowing in the tubing as a function of the determined change in frequency.Type: ApplicationFiled: September 29, 2008Publication date: April 1, 2010Applicant: TYCO HEALTHCARE GROUP LPInventors: Thomas G. Lewis, William J. Byrd, Joseph A. Hudson
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Patent number: 7686789Abstract: A medical liquid injection system capable of automatically preventing a piston drive mechanism from being driven when a cylinder holding mechanism does not hold a medical liquid syringe properly. When a cylinder member (210) is being held, in a specific direction of rotation about the axis of the mechanism, by a cylinder holding mechanism (120), an RFID chip (230) and an RFID reader (131) become communicable, making the piston drive mechanism operable. On the other hand, when the cylinder member (210) has been rotated by a specified angle from a specific direction, the RFID chip (230) and the RFID reader (131) become incommunicable, not making the piston drive mechanism operable. As a consequence, the piston drive mechanism is not driven when the cylinder holding mechanism (120) is not holding the medical liquid syringe properly.Type: GrantFiled: July 14, 2005Date of Patent: March 30, 2010Assignee: Nemoto Kyorindo Co., Ltd.Inventors: Shigeru Nemoto, Seiichi Ono, Masahiro Sakakibara
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Patent number: 7686781Abstract: A catheter adapted for use in passing fluids and medicines therethrough for use in the perfusion or reperfusion of blood or blood-fluid mixtures into the arteries, veins, tissues, conduits, or organs of a patient is disclosed. The catheter has an elongate tubular body with an elongate central lumen defined therein. The catheter also includes at least one occlusive balloon disposed on the exterior of and about the tubular body, and a drug delivery lumen defined within the tubular body separately of the central lumen and extending in the lengthwise direction of the tubular body. A drug delivery outlet is defined at and in communication with a distal end of the drug delivery lumen for permitting the delivery of fluids passed through the drug delivery lumen separate of any fluids passed through the central lumen of the catheter.Type: GrantFiled: October 25, 2002Date of Patent: March 30, 2010Assignee: Emory UniversityInventor: Jakob Vinten-Johansen
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Patent number: 7686787Abstract: A delivery device includes a durable housing portion and a separable disposable portion that selectively engage and disengage from each other. The disposable housing portion secures to the patient and may be disposed of after it has been in use for a prescribed period. Components that normally come into contact with a patient or with infusion media are supported by the disposable housing portion for disposal after the prescribed use, while the durable housing portion supports other components such as electronics for controlling delivery of infusion media from the reservoir and a drive device and drive linkage.Type: GrantFiled: August 23, 2005Date of Patent: March 30, 2010Assignee: Medtronic Minimed, Inc.Inventors: Sheldon B. Moberg, Ian B. Hanson, Paul S. Cheney, II
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Publication number: 20100076372Abstract: A fluid management system with a detection circuit for detecting whether an attached surgical device is operational. The fluid management system changes at least one operation mode when the surgical device is detected as being operational. The fluid management system may include inflow, outflow, or inflow/outflow capabilities, and monitors at least one signal characteristic of an AC power signal provided to the surgical device.Type: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Inventors: Randall Hacker, Ronald Seese, Terrance J. Mclaughlin, Adam Mankowski, Edwin W. Floyd, James A. Tebo, Milton D. Frank, Sheshin Yamin
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Publication number: 20100069830Abstract: Methods and compact automatic devices are provided for delivery of micro doses of liquid drugs to a patient. Devices have a fluid supply reservoir comprising an expandable indicator supplied with a sensor, a mechanism forcing the fluid to squeeze predetermined dose out, and a processor treating sensor's signals accordingly to preprogrammed algorithm. The method comprises steps: (a) initiating the delivery cycle, (b) acquiring sensor's signals, (c) treating signals in order to integrate an intensity of output flow and to determine when the squeezing-out force must be terminated, (d) terminating the cycle accordingly to processor's command. Self-testing of devices occurs while each fluid delivery cycle. Their high dosing precision exceeds that of known analogs about two orders of magnitude. A possibility to use low cost disposable exit port assembly and/or easy replaceable factory pre-filled cartridges is an additional advantage eliminating risks of overdosing, air bubbles, and/or compromised sterility.Type: ApplicationFiled: September 14, 2009Publication date: March 18, 2010Inventor: Leonid Grigorov
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Patent number: 7678071Abstract: An implantable infusion pump possesses operational functionality that is, at least in part, controlled by software operating in two processor ICs which are configured to perform some different and some duplicate functions. The pump exchanges messages with an external device via telemetry. Each processor controls a different part of the drug infusion mechanism such that both processors must agree on the appropriateness of drug delivery for infusion to occur. Delivery accumulators are incremented and decremented with delivery requests and with deliveries made. When accumulated amounts reach or exceed, quantized deliverable amounts, infusion is made to occur. The accumulators are capable of being incremented by two or more independent types of delivery requests. Operational modes of the infusion device are changed automatically in view of various system errors that are trapped, various system alarm conditions that are detected, and when excess periods of time lapse between pump and external device interactions.Type: GrantFiled: April 10, 2003Date of Patent: March 16, 2010Assignee: Medtronic Minimed, Inc.Inventors: Ronald J. Lebel, Timothy J. Starkweather, Philip T. Weiss
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Publication number: 20100056994Abstract: A pumping apparatus and pump set for use 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 being 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 provides an indication to the control system that the feeding set conduit is properly positioned in the feeding pump.Type: ApplicationFiled: November 11, 2009Publication date: March 4, 2010Applicant: COVIDIEN AGInventors: James M. Harr, Joel D. Wiesner, Christopher A. Knauper, Glenn G. Fournie, Ricky A. Sisk, Joseph A. Hudson, Robert B. Gaines, Kevin C. Meier, James G. Hanlon
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Patent number: 7662124Abstract: An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.Type: GrantFiled: April 16, 2002Date of Patent: February 16, 2010Assignee: Acist Medical Systems, Inc.Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
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Publication number: 20100036313Abstract: A fluid flow device includes a housing configured to releasably mate with a surgical control unit for controlling fluid flow during a surgical procedure. First and second ports measure fluid pressure within a fluid path provided within the housing. The fluid flow device includes a restrictor for restricting fluid flow at a restriction location along the fluid path. The first port is located upstream of the restriction location and the second port is located downstream of the restriction location. A fluid pump is provided within the housing.Type: ApplicationFiled: October 19, 2009Publication date: February 11, 2010Applicant: Smith & Nephew, Inc.Inventors: Cemal Shener, Kenneth W. Krause
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Publication number: 20100016827Abstract: A needle-free transdermal transport device includes a chamber (900) for holding the substance to be injected, a nozzle (910) in fluid communication with the chamber, and a drug reservoir (950) for storing the substance to he transferred to the chamber. The needle-free transdermal transport device also includes a controllable magnet and coil electromagnetic actuator (242) in communication with the chamber. The actuator receives an electrical input and generates in response a force. The force then causes a needle-free transfer of the substance from the chamber to the biological body. The force is variable responsive to variations in the received input during actuation. The actuator draws the substance from the drug reservoir or alternatively, the substance can be pressurized from the drug reservoir into the chamber by a pressure source.Type: ApplicationFiled: August 31, 2007Publication date: January 21, 2010Applicant: Massachusetts Institute of TechnologyInventors: Ian W. Hunter, Brian D. Hemond, Dawn M. Wendell, Nora Catherine Hogan, Andrew J. Taberner, Nathan B. Ball
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Patent number: 7648475Abstract: A non-invasive device for measuring blood temperature in a circuit for the extracorporeal circulation of blood includes a line in which blood taken from a patient flows. The device also includes a temperature sensor connected to the line and provided with a device for measuring the intensity of an electromagnetic radiation. The measuring device faces a connecting portion or window of the line that is permeable by electromagnetic radiation in a first wave band, and generates a first signal, correlated with the electromagnetic radiation in the first band and therefore with the temperature of the blood flowing in the line.Type: GrantFiled: December 20, 2002Date of Patent: January 19, 2010Assignee: Gambro Lundia ABInventors: Giorgio De Cicco, Francesco Fontanazzi, Annalisa Delnevo, Massimo Zaccarelli, Francesco Paolini
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Patent number: 7650146Abstract: A system including at least two distally separated devices that are in wireless communication with each other, wherein at least one of the two devices is provided with a warning mechanism configured to indicate an existing or imminent interruption or disturbance of communication. The inventive system may include a base unit and at least one mobile medical or pharmaceutical device in unidirectional communication or bidirectional communication with the base unit. A method for monitoring wireless communication between at least two devices is encompassed, wherein at least one of the two devices indicates an existing or imminent interruption or disturbance of the wireless communication by changing a type of the communication signal transmission.Type: GrantFiled: December 22, 2005Date of Patent: January 19, 2010Assignee: Disetronic Licensing AGInventor: Andreas Eberhart
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Patent number: 7648477Abstract: Equipment for controlling blood flow in an extra-corporeal blood circuit, comprising at least a first sensor (11), de-signed 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) de-signed to store at least one set value (Qset) of the desired blood flow through the access branch, and a calibration function (F) in at least the variables (vI), 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 anType: GrantFiled: January 22, 2008Date of Patent: January 19, 2010Assignee: Gambro Lundia ABInventors: Luca Vinci, Francesco Fontanazzi
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Publication number: 20100010423Abstract: A peritoneal dialysis system includes a logic implementer configured to: (i) generate a number of peritoneal dialysis therapy regimens that meet at least one therapy target input; (ii) accept a filter input; and (iii) filter the generated therapy regimens according to the filter input to refine the number of therapy regimens available for selection.Type: ApplicationFiled: July 9, 2008Publication date: January 14, 2010Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Anping Yu, Robert W. Childers, Edward F. Vonesh, Borut Cizman, Michael Niemann
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Patent number: 7645258Abstract: A wireless communication system from an IV medication infusion pump to a hospital information management system (HIMS) is disclosed. The system includes an IV pump having pump operation circuitry for monitoring pre-selected characteristics of pump operation indicative of IV administration of medication to a patient. A transmitter or transceiver is connected to the pump operation circuitry for receiving a wireless pump signal representing instructional data to the IV pump and for transmitting a wireless pump signal representing the pre-selected pump operation characteristics. The wireless pump transmitter or transceiver communicates with a hospital information management system (HIMS). The HIMS includes a receiver or transceiver capable of transmitting and receiving the pump signal representing the pump operation characteristics and also includes a computer processor capable of storing and displaying the pump operation characteristics that are represented by the received wireless pump signal.Type: GrantFiled: March 13, 2004Date of Patent: January 12, 2010Assignee: B. Braun Medical, Inc.Inventors: Gale White, Roger J. Hill, Michael J. Zakrewski, Ruth Kummerlen, Martyn Stuart Abbott, Robert C. Brooks
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Publication number: 20090326444Abstract: The double-sided adhesive sheet (500) includes first, second, third and fourth peel sheets (510,520,530,540), and a sheet body 501. Each peel sheet has first, second, third and fourth affixing portion (511,521,531,541) affixed to the surface of the sheet body, and first, second, third and fourth peeling portion (512,522,532,542) not affixed to said surface. A boundary between the first affixing portion and the second affixing portion on the upper surface intersects a boundary between the third affixing portion and the fourth affixing portion on the lower surface. Owing to this structure, the peel sheets can be easily peeled off from the body.Type: ApplicationFiled: October 19, 2006Publication date: December 31, 2009Applicant: NEMOTO KYORINDO CO., LTD.Inventor: Masahiro Sakakibara
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Publication number: 20090326445Abstract: The invention provides a device for displaying information, comprising storage means for storing data, display means adapted to display data to a user, and user input means. The data is organized as data units, each data unit comprising time data, type data and information data, and the display means is adapted to graphically display an aggregate period view comprising at least two period views, graphically display a single period view, graphically display a symbol corresponding to a given data type, graphically display at least one data type symbol for every period view, and display a card view comprising information data corresponding to a selected symbol. The user input means allows the user to select a desired period view from an aggregate period view, the display thereby displaying the selected period view, and select a desired symbol, the display thereby displaying a card view showing at least a portion of the corresponding information data.Type: ApplicationFiled: October 3, 2007Publication date: December 31, 2009Inventors: Henning Graskov, Jorgen Smedegaard, Johnny Kristensen, Marianne Lindgård Witt, Anders Geert-Jensen
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Publication number: 20090318791Abstract: A medical action device is adapted to cooperate with an object to be inserted into a body and to cooperate with a timing device, able to start timing from the moment the object is inserted. This information is fed to a control unit whereby the control unit gets an input which can be used to compensate one or more parameters of the medical action as a function of the increased blood flow in the area around the inserted object over time due to the inflammation reaction.Type: ApplicationFiled: June 15, 2007Publication date: December 24, 2009Applicant: Novo Nordisk A/SInventor: Peter Kaastrup
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Publication number: 20090318858Abstract: 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: ApplicationFiled: June 19, 2008Publication date: December 24, 2009Applicant: Cardinal Health 303, Inc.Inventor: Paul DEWEY
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Publication number: 20090306585Abstract: In various embodiments, an implantable pump includes a cannula. The pump (e.g., the cannula thereof) may include, for example, flow sensors, pressure sensors, filters, and/or other components.Type: ApplicationFiled: May 8, 2009Publication date: December 10, 2009Inventors: Changlin Pang, Jason Shih, Fukang Jiang, Sean Caffey, Mark Humayun, Yu-Chong Tai
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Publication number: 20090299277Abstract: A wearable infusion pump assembly including 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 volume sensor assembly configured to receive a quantity of the infusible fluid from the reservoir. The volume sensor assembly includes an acoustically contiguous region having a volume that varies based upon the quantity of infusible fluid received from the reservoir, and an acoustic energy emitter configured to provide acoustic energy at a plurality of frequencies to excite a gas included within the acoustically contiguous region.Type: ApplicationFiled: December 31, 2008Publication date: December 3, 2009Inventors: Dean Kamen, John Matthew Kerwin, Colin Holmes Murphy
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Patent number: 7625354Abstract: A handpiece assembly is provided that is adapted for use with a medication infusion system that applies pressure to the handpiece assembly for delivering medication to a body. The handpiece assembly includes a cartridge holder that is configured for disposal of a medication cartridge. A tubing is provided having a first end, which is sealed with the cartridge holder such that the cartridge holder facilitates communication between the tubing and the medication cartridge. A handpiece is sealed with a needle and the second end of the tubing so that the tubing and the needle are in communication. One of the cartridge holder, the tubing, the needle or the handpiece is configured for a selective structural failure at a predetermined pressure threshold applied to the handpiece assembly from the medication infusion system. The cartridge holder may be designed to facilitate aspiration.Type: GrantFiled: November 11, 2005Date of Patent: December 1, 2009Assignee: Milestone Scientific, Inc.Inventor: Mark Hochman
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Publication number: 20090287180Abstract: A device comprises a reusable and a disposable comprising at least one first chamber holding a flow material and a second chamber holding a gas. The disposable is removable from the reusable and maintains sterility when removed from the reusable. Flow metering device provide safety and allow for variably stroke frequency thereby modulating flow rate.Type: ApplicationFiled: May 19, 2009Publication date: November 19, 2009Inventor: Paul M. DiPerna
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Patent number: 7618409Abstract: An apparatus and method for a controlled injection of a drug into a selected tissue of a subject by a practitioner, uses a drive unit for supplying the drug and a handpiece to be held and guided by the practitioner, connected to the drive unit for receiving the drug. The handpiece holds an injection needle to be inserted into the selected tissue by the practitioner for passing the drug to the selected tissue at an instantaneous and absolute pressure that varies as a function of the type of tissue and the placement of the needle. A pressure sensor senses this instantaneous pressure and a feedback mechanism supplies a perceptible audible, visual or other signal to the practitioner that indicates when the instantaneous pressure has reached a minimum desired pressure, the practitioner thus being informed that the correct placement and dosage has been attained.Type: GrantFiled: December 21, 2006Date of Patent: November 17, 2009Assignee: Milestone Scientific, IncInventor: Mark N. Hochman
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Patent number: 7618542Abstract: A blood purifying apparatus particularly suitable for continuous blood purification, and a method of controlling the same whereby the weight of body fluid removed from a patient and a feed weight to the patient can be more accurately controlled. A blood purifying apparatus 50 adapted for the continuous blood purification includes a drain C, a dialysate feed A, and a replacement fluid feed B, which are equipped with transfer pumps 5, 6, 7, respectively, reservoir containers 8, 9, and 10, respectively, that are capable of storing a predetermined volume, and fluid level sensors 11, 12, and 13, respectively. The blood purifying apparatus further includes a single weightmeter 20 capable of measuring the reservoir containers 8, 9, and 10 all at the same time.Type: GrantFiled: August 4, 2003Date of Patent: November 17, 2009Assignee: Asahi Kasei Medical Co., Ltd.Inventor: Soichirou Okazaki
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Patent number: 7618397Abstract: The fluid delivery system includes a control console adapted to control delivery of fluid to a patient and a pump cassette disposed in a pump cassette socket in the control console and operatively controlled by the control console. The pump cassette includes a pump housing formed by opposing housing members that cooperatively define a pump chamber. A pair of meshed gears is disposed in the pump chamber and separate the pump chamber into a fluid inlet area and a fluid outlet area accessible through respective inlet and outlet ports in the pump housing. The gears are adapted to pressurize fluid for delivery to the patient. Other features of the system include a fluid heater upstream of the pump cassette, air detectors associated with the inlet and outlet ports of the pump cassette, and a sensor to read an encoding device associated with the pump cassette.Type: GrantFiled: April 12, 2006Date of Patent: November 17, 2009Assignee: Medrad, Inc.Inventor: Jeffrey H. Hicks
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Publication number: 20090281487Abstract: A system is provided for efficiently gelating and injecting a constant amount of biopolymer powder for effectively using biopolymer in sealing, stanching, and prevention of adhesion of a post-surgical site. Powder transfer line 320 for transferring biopolymer powder atomized with the pressure of noninflammable gas in powder agitating container 220, and transfer lines 310, 330 for separately transferring noninflammable gas and solution separately from the powder transfer line 320, are joined at the tip of nozzle attachment 400 for injecting a mixture of the biopolymer powder and the noninflammable gas, together with the noninflammable gas and the solution.Type: ApplicationFiled: July 21, 2009Publication date: November 12, 2009Inventor: SOUSAKU KAWATA
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Publication number: 20090275887Abstract: Some embodiments of a portable infusion pump system can be configured to can be configured to adjust the sensitivity of particular detectors or alert systems based (at least in part) on information received from a monitoring device. For example, a glucose monitoring device can communication with an infusion pump assembly used to supply insulin or another medication to a user. In such circumstances, the data received from the monitoring device can be used to adjust the sensitivity of an occlusion detection system.Type: ApplicationFiled: May 5, 2008Publication date: November 5, 2009Applicant: M2 MEDICAL GROUP HOLDINGS, INC.Inventor: Mark C. Estes
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Publication number: 20090270798Abstract: A method of providing a bolus alert for an insulin pump user includes determining a bolus interval for an insulin pump user, establishing a bolus amount for the bolus interval, determining a bolus amount taken by the insulin pump user during the bolus interval, and providing an alert if the bolus amount taken by the insulin pump user differs from the bolus amount established for the bolus interval.Type: ApplicationFiled: April 29, 2008Publication date: October 29, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: Steven P. Jones
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Patent number: 7604610Abstract: A fluid flow device includes a housing configured to releasably mate with a surgical control unit for controlling fluid flow during a surgical procedure. First and second ports measure fluid pressure within a fluid path provided within the housing. The fluid flow device includes a restrictor for restricting fluid flow at a restriction location along the fluid path. The first port is located upstream of the restriction location and the second port is located downstream of the restriction location. A fluid pump is provided within the housing.Type: GrantFiled: June 13, 2006Date of Patent: October 20, 2009Assignee: Smith & Nephew, Inc.Inventors: Cemal Shener, Kenneth W. Krause, Petter Hedstrom, Brian J. Loreth
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Publication number: 20090259176Abstract: A transdermal patch system configured as a patch or pump assembly may be placed into contact upon a skin surface to transport drugs or agents transdermally via any number of different mechanisms such as microporous membranes, microneedles, in-dwelling catheters, etc. The assembly may enclose or accommodate a reservoir configured as an elongate microchannel to contain the drug or agent suspended in a fluid vehicle. The reservoir may also be fluidly coupled via microchannels to transport the drugs into or against an underlying skin surface as driven or urged via a pump and controlled by an electronic control circuitry which may be programmed to affect any number of treatment regimens.Type: ApplicationFiled: April 9, 2008Publication date: October 15, 2009Applicant: Los Gatos Research, Inc.Inventor: Micah B. YAIRI
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Publication number: 20090254025Abstract: An infusion pump includes: a housing, a pump actuator supported by the housing, electronics configured to control the pump actuator, a pain controlled analgesic (“PCA”) input device, a cord having a remote end connected to the PCA input device and a local end connected to the housing, a remote integrated circuit; and a local integrated circuit in communication with the electronics and the remote integrated circuit so as to provide operational information concerning the PCA input device to the electronics.Type: ApplicationFiled: April 2, 2008Publication date: October 8, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventor: Mark Randal Simmons
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Publication number: 20090253973Abstract: An apparatus for optimizing a patient's insulin dosage regimen over time, comprising: at least a first computer-readable memory for storing data inputs corresponding at least to one or more components in a patient's present insulin dosage regimen and the patient's blood-glucose-level measurements determined at a plurality of times; a processor operatively connected to the at least first computer-readable memory, the processor programmed at least to determine from the data inputs corresponding to the patient's blood-glucose-level measurements determined at a plurality of times whether and by how much to vary at least one of the one or more components of the patient's present insulin dosage regimen in order to maintain the patient's future blood-glucose-level measurements within a predefined range; and a display operative to display information corresponding to at least the patient's present insulin dosage regimen.Type: ApplicationFiled: April 3, 2009Publication date: October 8, 2009Inventors: Eran Bashan, Israel Hodish
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Publication number: 20090247865Abstract: The fluid injector system includes a source of injection fluid, a pump device, a fluid control device operably associated with the pump device, and a fluid path set in fluid connection with the source of injection fluid and the pump device. The fluid path set includes a drip chamber including an elongated body having a top end, a bottom end and a raised projection, the raised projection being substantially rectangular in shape and extending longitudinally from the top end along the drip chamber body and terminating adjacent to the bottom end. A fluid level sensing mechanism is operably associated with the fluid control device, and includes a drip chamber support for supporting the drip chamber body and a fluid level sensor associated with the drip chamber support.Type: ApplicationFiled: June 2, 2009Publication date: October 1, 2009Applicant: MEDRAD, INC.Inventors: Michael A. Spohn, Thomas P. Joyce, Michael J. Ehrenberger, James Albert Dedig, John A. Haury, Susan Lynn Felix, Gerald W. Callan, John D. Shearer, JR., Jonathan R. Speicher, Christopher M. Scutt, Herb Grubic, Ralph Kopacko, William D. Barlow, Jerry A. Stokes, JR., Richard G. Critchlow, Karen M. Zelenski, Mirza Hyder Hussain, Linda M. O'Meara, Roderick H. Beaulieu, Jennie Kwo, Luis A. Pedraza
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Publication number: 20090234266Abstract: An ultrafiltration device and method for the removal of excess fluid in hypervolemic patients and/or removal of toxins in the blood including for patients suffering from either renal or cardiovascular disease is disclosed. An embodiment of the device includes a housing containing multiple large bore hollow fiber membranes which are connected to the patient's vascular system via a connecting element comprising bifurcated fluid pathway elements to physiologically channel the blood flow either to or from each hollow fiber membrane of the device, a channel to direct the fluid removed by the device to a suitable collection container or the patient's bladder, and controls that control excessive removal of the water from the patient. Devices can be either worn extracorporeally or surgically implanted in order to allow for continuous fluid removal with ambulatory freedom.Type: ApplicationFiled: February 23, 2009Publication date: September 17, 2009Applicant: Fresenius Medical Care Holdings, Inc.Inventors: Barry A. Solomon, Gregory S. Erman, Frank A. Fazio
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Publication number: 20090221957Abstract: Infusion devices with blockage detection capability and methods of monitoring infusion devices.Type: ApplicationFiled: February 29, 2008Publication date: September 3, 2009Inventors: Sam W. Bowman, Brian Michael Shelton, Scott R. Gibson, Lawrence Eric Ong, John Paul D'Brot
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Publication number: 20090221890Abstract: In one embodiment, a diabetes management system comprises a glucose monitoring system, a pump system, and a remote device. The glucose monitoring system and pump system are attached to a patient and covered by a soft shell. The glucose monitoring system and the pump system are controlled by the small, touch-screen remote device such a patient can discreetly monitor blood glucose levels and administer insulin dosages. The remote device has a small and durable form factor that can be worn or carried in various ways.Type: ApplicationFiled: February 28, 2008Publication date: September 3, 2009Inventors: Daniel Saffer, Alexa Andrzejewski, Rachel Hinman, Sebastian Heycke, Jamin Hegeman
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Patent number: 7577477Abstract: The perivascular leak repair system, and method of using the same, of the present invention provides a sealant reservoir with a repair catheter operably attached; a flow control device disposed between the sealant reservoir and the repair catheter, and the flow control device responsive to a flow control signal; a heart phase detector generating a diastole phase signal; an injection switch generating a injection signal; and a flow controller responsive to the diastole phase signal and the injection signal, and generating the flow control signal. A method of sealing a perivascular leak comprises identifying the perivascular leak; inserting a repair catheter to the perivascular leak; injecting sealant at the perivascular leak; and removing the repair catheter. The sealant can be injected when the heart is in diastole to sweep the sealant into the perivascular leak.Type: GrantFiled: April 29, 2004Date of Patent: August 18, 2009Assignee: Medtronic Vascular, Inc.Inventors: Jeffrey W. Allen, David S. Brin, Chris M. Coppin