From Pump Injection Device Patents (Class 604/123)
  • Patent number: 10258742
    Abstract: A method for readying a fluid sensor associated with a medical device includes attaching a flow restrictor to a fluid outlet of the fluid sensor. The fluid sensor includes a fluid channel, a fluid inlet at a first end of the fluid channel configured to couple to an outlet of an administrable fluid source, and the fluid outlet at a second end of the fluid channel. Fluid is delivered from the administrable fluid source to the fluid channel through the fluid inlet. A syringe actuation device including a force limiting device may be used to deliver the fluid. The fluid is pressurized in the fluid channel between the fluid inlet and the flow restrictor to wet an interior surface of the fluid channel with the fluid. The flow restrictor is removed from the fluid outlet.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: April 16, 2019
    Assignee: Becton, Dickinson and Company
    Inventors: Kaushal Verma, Brandi Ford, Shawn Wayne DeKalb, Hong Zhu
  • Patent number: 9895527
    Abstract: A pressure isolation mechanism including a valve housing which defines a first lumen associated with a pressurizing device, a second lumen associated with an input line which connects a low pressure fluid delivery system to the valve housing, and a pressure isolation port is disclosed. The pressure isolation mechanism further includes a first valve having a normally open position permitting fluid communication between the first lumen and the second lumen and movable to a closed position when fluid pressure in the first lumen reaches a predetermined pressure level, and a second valve disposed within the second lumen and regulating fluid flow through the second lumen, wherein the second valve substantially isolates the input line from a pressure transducer connected to the pressure isolation port. A method for correcting for dampened hemodynamic blood pressure signals in a fluid delivery system which includes the pressure isolation mechanism is also described.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 20, 2018
    Assignee: BAYER HEALTHCARE LLC
    Inventors: Michael A. Spohn, John A. Haury, Herbert M Grubic, James A. Dedig
  • Patent number: 9717844
    Abstract: A cabinet structure for an infusion system includes a platform, on which the system is mounted, and a shell surrounding an interior space, which contains at least a portion of the system. The shell preferably includes an opening that is sized and oriented to allow a lowering of a radioisotope generator, for the system, into the interior space, and a lifting of the generator out from the interior space. The shell may further include another opening, located at a higher elevation than the aforementioned opening, in order to provide access to a waste bottle of the infusion system.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: August 1, 2017
    Assignee: Bracco Diagnostics Inc.
    Inventors: Charles R. Quirico, Ernest Balestracci, Jacob S. Childs, Peter B. Madson, Daniel V. Clements, Janet L. Gelbach
  • Patent number: 9675744
    Abstract: A method of operating a disposable pumping unit includes enabling the disposable pumping unit to be loaded into a peritoneal dialysis hardware unit between a door and a housing of the hardware unit; structuring the disposable pumping unit to have a fluid pump receptacle, the fluid pump receptacle constructed and arranged to extend from both surfaces of the unit so as to fit within a first opening provided in the door and a second opening provided in the housing of the hardware unit; and enabling the disposable pumping unit to be guided into the hardware unit such that the fluid pump receptacle becomes aligned with the opposing first and second openings when the door is closed against the housing.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: June 13, 2017
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Loren M. Lundtveit, Jose Alvaro, Joseph H. Bowman, Jr., Daniel P. O'Sullivan, Stanley O. Thompson
  • Patent number: 9339604
    Abstract: Infusion systems and methods for infusing one or more drugs or other agents into the body of a human or animal subject. The system is programmed to take remedial action(s) upon sensing of a fault or error in connection with the infusion. In some embodiments, an agent may be infused through redundant flowpaths and, if a fault occurs in one flowpath, the system may respond by increasing flowrate through other non-faulting flowpath(s). In some embodiments, the fault may be a physiological reaction or symptom in the subject and the system may respond by adjusting or stopping flowrate(s) or one or more agents or changing the ratio of simultaneously infused agents.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: May 17, 2016
    Inventor: Ahmad-Maher Moubayed
  • Publication number: 20150073345
    Abstract: A medical instrument for ejecting liquid includes a liquid chamber that contains the liquid, a driving unit that pressurizes the liquid contained in the liquid chamber, and a vibration detector that detects vibration when the driving unit is driven.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 12, 2015
    Inventors: Takahiro MATSUZAKI, Kunio TABATA, Shinichi MIYAZAKI, Takeshi SETO
  • Patent number: 8974413
    Abstract: The present invention relates to an administration instrument for medical use that can perform injection of a drug solution with stability and with great reliability. For example, at the administration, it is possible to prevent a force that presses the injection button from acting in a direction of inserting the needle that is inserted into the skin deeper, and enables the administration under a stable state where the needle does not wobble, thereby alleviating physical and mental pain of the administration patient. With a structure in which an injection button (3) is pressed at an angle that is not parallel to the needle with respect to a direction in which the needle (4) is inserted into the skin, it is possible to prevent the force of pressing the injection button from being transmitted in a direction of inserting the needle into the skin deeper than the initial insertion of the needle, thereby achieving an administration under a stable state.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: March 10, 2015
    Assignee: Panasonic Healthcare Co., Ltd.
    Inventors: Tokumi Baba, Tokumi Ishikawa, Kouichi Matsuda
  • Patent number: 8905969
    Abstract: A method of removing air from a flow path of a medical fluid injection system is described. An exemplary method performed by the medical fluid injection device includes delivering a first amount of fluid to a fluid flow path, isolating fluid flow along the flow path, forming a vacuum condition upstream of the fluid isolation, re-establishing fluid communications along the flow path, and delivering a second amount of fluid to the flow path.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: December 9, 2014
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Sidney D. Nystrom, David J Hajicek, Touhid Khan
  • Publication number: 20140350459
    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 23, 2013
    Publication date: November 27, 2014
    Inventors: Gregory R. Lanier, JR., Larry B. Gray, Richard J. Lanigan, Dean Kamen, Stephen L. Fichera, John M. Kerwin
  • Publication number: 20140243782
    Abstract: Bubble traps for removing bubbles from a stream of liquid and flexible containers comprising such bubble traps are disclosed. The bubble trap includes a containment chamber fluidly coupled to an outlet conduit. At least one grate is disposed between the containment chamber and the outlet conduit. The at least one grate includes a plurality of grate inlets formed in a grate wall and fluidly coupled to the outlet conduit with a plurality of grate conduits such that the containment chamber is fluidly coupled to the outlet conduit. The grate traps bubbles entrained in the stream of liquid flowing from the containment chamber to the outlet conduit in the containment chamber when the bubbles are greater than or equal to a diameter of the grate inlets.
    Type: Application
    Filed: May 9, 2014
    Publication date: August 28, 2014
    Applicant: Roche Diagnostics International AG
    Inventors: Christoph Huwiler, Florian Kuhni, Andreas Geipel
  • Patent number: 8812082
    Abstract: In general, this disclosure relates to techniques for automatically supplying a pressurizing unit (e.g., syringe) that is used with a powered medical fluid injection device with fluid. An example method performed by the medical fluid injection device includes obtaining operational state information of the medical fluid injection device, wherein the operational state information includes information other than a fluid delivery amount for a subsequent injection procedure. The example method further includes using the operational state information to determine whether the powered medical fluid injection device permits a fluid replenishment operation for the pressurizing unit. If the fluid replenishment operation is permitted, the method further includes automatically supplying the pressurizing unit with an amount of medical fluid. If the device includes multiple pressurizing units, the device may initiate an automatic fluid replenishment procedure for one or more of the pressurizing units during operation.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: August 19, 2014
    Assignee: ACIST Medical Systems, Inc.
    Inventors: David Hajicek, Richard Oftedahl
  • Publication number: 20140207113
    Abstract: The invention concerns an assembly for delivering a flowable nutritional substance, e.g. made from homemade cooked foods or home prepared food or foods treated with a hand blender or equivalent, comprising a substantially tubular container 1 formed with enclosed lower end and an open upper end, the open upper end being adapted to receive in a sealing manner a closure 20, the closure comprising a unidirectional valve 18, the container 1 also comprising a fluid outlet port in the form of a valve and a pump mechanism 3 is contained in a pump housing 5.
    Type: Application
    Filed: June 26, 2012
    Publication date: July 24, 2014
    Inventor: Bjornar Sjursen
  • Publication number: 20140163521
    Abstract: A medical device pump with a housing with a compartment for removably receiving a cartridge containing a therapeutic agent, a conduit configured to operatively provide a fluid flow path for therapeutic agent to exit from the cartridge, a user activated delivery button, a trigger mechanism, and a pump mechanism employing an articulating, coiled drive spring.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 12, 2014
    Applicant: Animas Corporation
    Inventor: Sean M. O'Connor
  • Publication number: 20140148757
    Abstract: A system for controlled delivery of medicinal fluid includes a fluid pathway assembly defining a fluid pathway and including means for calculating a first calculated fluid flow rate using gas laws. The fluid pathway assembly has an inline flow sensor element received within the fluid pathway movable in response to fluid flowing in the fluid pathway. A flow control device is removably attached to the fluid pathway assembly and has a sensor for sensing a position of the inline flow sensor element in the fluid pathway, the position of the inline flow sensor element being representative of a second calculated fluid flow rate. The fluid pathway assembly includes a variable flow resistor adjustable to regulate a rate of fluid flow in the fluid pathway assembly. A drive mechanism attached to the flow control device is operably coupled to the variable flow resistor when the flow control device is attached to the fluid pathway assembly.
    Type: Application
    Filed: January 29, 2014
    Publication date: May 29, 2014
    Inventors: Jesse E. Ambrosina, Benjamin G. Powers
  • Patent number: 8679060
    Abstract: An infusion pump system is described that increases patient comfort and convenience. The infusion pump system includes an infusion site interface that is releasably connected to an infusion pump body, and has no tubing associated between the infusion site interface and the pump body. The infusion pump body may include a carrier frame that may be adhered to the skin of a user.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: March 25, 2014
    Assignee: Asante Solutions, Inc.
    Inventors: Morten Mernoe, James Causey, Mitchell Wenger, Mark Estes
  • Publication number: 20140081202
    Abstract: An infusion pump comprises at least three operating layers. A first layer includes epicyclic gear means comprising a rotatable central gear, a stationary outer ring gear, and movable planet gears arranged between the central gear and the ring gear in movable engagement with the central and ring gears. A second layer includes roller bearing means comprising a stationary outer ring and a movable inner roller arrangement in movable arrangement with the outer ring and coupled with the epicyclic gear means to provide a rotational bearing for the central and planet gears. A third layer includes rotary peristaltic pump means comprising stationary flexible tubing which includes a bent portion having an essentially part-cycle form and a rotor having engagement elements to squeeze the bent portion during rotation for a pump action, wherein the rotor is coupled with the central gear to transfer torque from the central gear to the rotor.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Applicant: MICREL Medical Devies S.A.
    Inventor: Achilleas Tsoukalis
  • Publication number: 20140074027
    Abstract: An intravenous (“IV”) liquid delivery system includes: an IV pump tubing set; a shuttle pump or membrane pump actuator operable with the IV pump tubing set; upstream and downstream valve actuators operable with the IV pump tubing set; the IV pump tubing set including an air removal device; an air detector configured to sense air in the IV pump tubing set; a control unit configured and arranged to (i) open the upstream valve actuator and close the downstream valve actuator to allow the pump actuator to draw liquid into a pump actuation portion of the IV pump tubing set, and (ii) close the upstream valve actuator and open the downstream valve actuator to allow the pump actuator to push liquid out of the pump actuation portion, the system configured to attempt to remove the air via the air removal device while operating the upstream and downstream valve actuators according to (i) and (ii).
    Type: Application
    Filed: February 21, 2013
    Publication date: March 13, 2014
    Inventors: Thomas Dudar, Ross Krogh, James Martucci, Shmuel Sternberg
  • Patent number: 8657785
    Abstract: An interventional catheter assembly comprising a catheter for insertion and guidance to a target site in a body lumen or a cavity and an operating head mounted in proximity to a distal end of the catheter and comprising a system for removing obstructive material from the target site is provided. In certain embodiments, the catheter assembly includes at least one aspiration port located proximal to the operating head that communicates with a first sealed lumen for withdrawing fluids and obstructive material from the target site, together with at least one liquid infusion port penetrating the catheter and located proximal to the at least one aspiration port that communicates with a second sealed lumen for supplying fluid to a location in proximity to the target site.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: February 25, 2014
    Assignee: Bayer Medical Care Inc.
    Inventors: Casey Torrance, Kate Walsh, Jared Salstrom, Scott Youmans, Edward I. Wulfman
  • Publication number: 20140039392
    Abstract: An infusion pump device and method for filling a fluidic system of the infusion pump with liquid medicament prior to infusion operation is presented. A control unit causes the infusion pump to: (a) bring a pump to an initial state; (b) switch a valve to a first state connecting a secondary reservoir to a first conduit and a primary reservoir; (c) retrieve medicament from the primary reservoir; (d) switch the valve to a second state connecting the secondary reservoir to a second downstream conduit; (e) expel the secondary reservoir contents into the second downstream conduit; (f) switch the valve to the first state; (g) retrieve the primary reservoir medicament; (h) switch the valve to the second state; and (i) expel the secondary reservoir contents into the second downstream conduit by shifting a piston to the initial position.
    Type: Application
    Filed: October 9, 2013
    Publication date: February 6, 2014
    Applicant: Roche Diagnostics International AG
    Inventors: Andreas Geipel, Joerg Dogwiler, Ulrich Haueter, Simon Scheurer, Rudolf Zihlmann, David Teutsch, Florian Kuehni, Reto Schaltegger
  • Patent number: 8633159
    Abstract: An apparatus and method for transdermally delivering a biologically active agent comprising a delivery system having a microprojection member (or system) that includes a plurality of microprojections (or array thereof) that are adapted to pierce through the stratum corneum into the underlying epidermis layer, or epidermis and dermis layers. In one embodiment, the PTH-based agent is contained in a biocompatible coating that is applied to the microprojection member.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: January 21, 2014
    Assignee: Alza Corporation
    Inventors: Mahmoud Ameri, Michel J. N. Cormier, Yuh-Fun Maa, Marika Kamberi, Peter E. Daddona
  • Patent number: 8613725
    Abstract: A reservoir includes a reservoir body portion and a collecting portion. The reservoir body portion having a wall defining an interior volume for containing fluidic media, the reservoir having a first port in the reservoir body portion to be in fluid flow communication with the interior volume, the first port for expelling fluidic media from the interior volume as a plunger is moved within the reservoir. The collecting portion having a wall defining a volume in fluid flow communication with the interior volume, the volume of the collecting portion for collecting gas bubbles in the fluidic media as the fluidic media is expelled through the first port from the interior volume of the reservoir body portion, the reservoir having a second port in the collecting portion to be in fluid flow communication with the volume of the collecting portion, the second port for receiving fluidic media into the reservoir.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: December 24, 2013
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Julian D. Kavazov, Ian B. Hanson, Colin A. Chong, Eric M. Lorenzen, Rafael Bikovsky, Truong Gia Luan, Mike Teang Lee, Thomas P. Miller
  • Patent number: 8613724
    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: Grant
    Filed: December 29, 2010
    Date of Patent: December 24, 2013
    Assignee: DEKA Products Limted Partnership
    Inventors: Gregory R. Lanier, Jr., Larry B. Gray, Richard J. Lanigan, Dean Kamen, Stephen L. Fichera, John M. Kerwin
  • Publication number: 20130338587
    Abstract: A method of removing air from a flow path of a medical fluid injection system is described. An exemplary method performed by the medical fluid injection device includes delivering a first amount of fluid to a fluid flow path, isolating fluid flow along the flow path, forming a vacuum condition upstream of the fluid isolation, re-establishing fluid communications along the flow path, and delivering a second amount of fluid to the flow path.
    Type: Application
    Filed: November 29, 2012
    Publication date: December 19, 2013
    Applicant: ACIST MEDICAL SYSTEMS, INC.
    Inventor: ACIST Medical Systems, Inc.
  • Patent number: 8597243
    Abstract: Various embodiments of the present invention are directed to limiting a presence of air bubbles in a fluidic medium expelled from a reservoir. In various embodiments, a reservoir is shaped so as to limit a presence of air bubbles in a fluidic medium expelled from the reservoir. Also, in various embodiments, a plunger head within a reservoir is shaped so as to limit a presence of air bubbles in a fluidic medium expelled from the reservoir. In some embodiments, both a reservoir and a plunger head within the reservoir are shaped so as to limit a presence of air bubbles in a fluidic medium expelled from the reservoir.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: December 3, 2013
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Julian D. Kavazov, Sheldon B. Moberg, Ian B. Hanson, Colin A. Chong, Eric M. Lorenzen, Rafael Bikovsky, Truong Gia Luan
  • Publication number: 20130267896
    Abstract: Embodiments directed to a degassing device for removing gas bubbles from a liquid drug stream and an ambulatory infusion system are disclosed. The degassing device may comprise an inlet chamber with an inlet opening, an outlet chamber with an outlet opening, and a degassing opening. A hydrophilic membrane and a hydrophobic membrane, wherein the hydrophilic membrane fluidically couples the inlet chamber with the outlet chamber, enabling a transfer of liquid from the inlet chamber to the outlet chamber. The hydrophobic membrane fluidically couples the inlet chamber with the degassing opening, enabling a transfer of gas from the inlet chamber to the degassing opening. The hydrophilic and hydrophobic membranes being joined along a joint to establish a joined membrane, such that a contact line of a liquid-gas phase separation on the joined membrane does not coincide with the joint independent of an orientation of the degassing device with respect to gravity.
    Type: Application
    Filed: September 28, 2012
    Publication date: October 10, 2013
    Inventors: Joerg Dogwiler, Christoph Huwiler, Philipp Michel
  • Patent number: 8523813
    Abstract: An auto purge for an intravenous contrast injector of the type having a motor which advances a plunger drive ram and configured for use with a pre-filled or user-filled syringe containing an approximate known amount of air including a processor which causes the motor to move and a memory storing a predetermined purge stop point representative of the approximate known amount of air in the syringe, the injector configured to automatically advance the plunger drive ram an amount substantially equal to the predetermined purge stop point representative of the approximate known amount of air contained in the syringe.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: September 3, 2013
    Assignee: Mallinckrodt LLC
    Inventors: Keith M. Grispo, Frank M. Fago
  • Patent number: 8475408
    Abstract: An infusion pump system is described that increases patient comfort and convenience. The infusion pump system includes an infusion site interface that is releasably connected to an infusion pump body, and has no tubing associated between the infusion site interface and the pump body. The infusion pump body may include a carrier frame that may be adhered to the skin of a user.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: July 2, 2013
    Assignee: Asante Solutions, Inc.
    Inventors: Morten Mernoe, James Causey, Mitchell Wenger, Mark C. Estes
  • Publication number: 20130116620
    Abstract: An intravenous pump system includes an intravenous pump having an air bubble detector, a separate air trap module and a patient line. The air trap module is connectable to a set interface upon which the pump can operate. The air trap module includes an air chamber capable of receiving fluids and air, a plurality of valves controlling the flow of the fluids and air, and an air vent. The patient line is connectable to the air trap module and to a patient. The air trap module includes an actuator to control the state of the valves to enable, at least during a venting mode, the pump to push air out of the air chamber via the vent without disconnecting the patient from the patient line.
    Type: Application
    Filed: April 12, 2011
    Publication date: May 9, 2013
    Applicant: Q-CORE MEDICAL LTD.
    Inventors: Shachar Rotem, Boaz Eitan, Shaul Eitan, Omer Havron
  • Patent number: 8430847
    Abstract: An infusion pump system is described that increases patient comfort and convenience. The infusion pump system includes an infusion site interface that is releasably connected to an infusion pump body, and has no tubing associated between the infusion site interface and the pump body. The infusion pump body may include a carrier frame that may be adhered to the skin of a user.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: April 30, 2013
    Assignee: Asante Solutions, Inc.
    Inventors: Morten Mernoe, James Causey, Mitchell Wenger, Mark Estes
  • Publication number: 20130102995
    Abstract: Apparatus and methods for inhibiting the introduction of air into the body during a percutaneous procedure.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 25, 2013
    Inventor: James R. Watson
  • Publication number: 20130102962
    Abstract: In various embodiments, a tool is employed in filling a drug-delivery device. The tool may include, for example, a needle that is admitted through a fill port of the drug-delivery device.
    Type: Application
    Filed: December 10, 2012
    Publication date: April 25, 2013
    Applicant: MINIPUMPS, LLC
    Inventor: MiniPumps, LLC
  • Patent number: 8419709
    Abstract: System for detecting and removing gas bubbles from a vascular infusion line, including a cassette adapted for disposition intermediate the fluid line, the cassette including a flexible tube having an inlet port for connection to a supply side of the fluid line, an outlet port configured for connection to a patient side of the fluid line, and a purge port intermediate the inlet and outlet ports, and a base unit adapted to receive the cassette and monitor fluid flow through the tube, the base unit including a sensor to detect the presence of a gas bubble in the fluid flow, a pinch valve adapted to stop the flow of fluid, and a control unit adapted to operate the base unit so that (i) fluid is permitted to flow past the pinch valve when no gas bubble is detected; and (ii) fluid flow is arrested when a gas bubble is detected.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: April 16, 2013
    Assignee: Anesthesia Safety Products, LLC.
    Inventors: Ihsan A. Haddad, David T. Healey
  • Patent number: 8419676
    Abstract: In general, this disclosure relates to techniques for sealing, or pinching, high-pressure fluid tubing (e.g., braided tubing) that may be used to deliver medical fluid from a powered medical fluid injection device, such as an injector that delivers contrast media and/or saline during angiographic or computed tomography (CT) procedures. In some cases, one or more low-friction, solenoid-based pinch valve mechanisms may be used. One example powered medical fluid injection device comprises an injector head and at least one pinch valve mechanism that is coupled to the injector head. The at least one pinch valve mechanism comprises a plunger, a reciprocating arm driven by the plunger, and a tube pinching area. The at least one pinch valve mechanism, when deactivated by the injector head, is configured to cause the reciprocating arm to pinch fluid tubing that runs through the tube pinching area.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: April 16, 2013
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Alan Evans, Marty Hieb, Khoi Le, Chris Lins, Steven Paul Plager, Bill West, Darryl T. Wrolson
  • Publication number: 20130072871
    Abstract: A multi-channel peristaltic pump in which each channel can be operated independently of the others. A peristaltic pump includes a plurality of motors, each of which drives a rotor shaft which is independently rotatable around an axis and which rotates a roller head having a plurality of rollers. The rotor shafts are disposed in a concentric manner. The peristaltic pump further can include a control system allowing an operator to selectively determine the speed and direction of rotation of each of the roller heads of the pump.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 21, 2013
    Inventor: Gunay Ozturk
  • Patent number: 8394321
    Abstract: In an infusion circuit (1), a peristaltic pump (7) displaced the infusion fluid along a line (3), sourcing it from a batch container (2). When a weight sensor (5) detects an emptying of the batch container (2), the pump is halted. If on stopping the pump the pressure measured by a sensor (6) operating in an expansion chamber (4) does not drop in excess of a predetermined threshold with respect to a non-empty container (2), a non-secure situation is signalled, due to an excessive quantity of air in the expansion chamber.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: March 12, 2013
    Assignee: Gambro Lundia AB
    Inventors: Giuseppe Franzoni, Luca Caleffi, Ranko Sakota
  • Patent number: 8382711
    Abstract: An intravenous (“IV”) liquid delivery system includes: an IV pump tubing set; a shuttle pump or membrane pump actuator operable with the IV pump tubing set; upstream and downstream valve actuators operable with the IV pump tubing set; the IV pump tubing set including an air removal device; an air detector configured to sense air in the IV pump tubing set; a control unit configured and arranged to (i) open the upstream valve actuator and close the downstream valve actuator to allow the pump actuator to draw liquid into a pump actuation portion of the IV pump tubing set, and (ii) close the upstream valve actuator and open the downstream valve actuator to allow the pump actuator to push liquid out of the pump actuation portion, the system configured to attempt to remove the air via the air removal device while operating the upstream and downstream valve actuators according to (i) and (ii).
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 26, 2013
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Thomas Dudar, Ross Krogh, James Martucci, Shmuel Sternberg
  • Patent number: 8372039
    Abstract: An infusion pump system is described that increases patient comfort and convenience. The infusion pump system includes an infusion site interface that is releasably connected to an infusion pump body, and has no tubing associated between the infusion site interface and the pump body. The infusion pump body may include a carrier frame that may be adhered to the skin of a user.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: February 12, 2013
    Assignee: Asante Solutions, Inc.
    Inventors: Morten Mernoe, James Causey, Mitchell Wenger, Mark Estes
  • Patent number: 8361021
    Abstract: A method and pump that accurately senses air in a fluid delivery line pulses or activates and deactivates the air sensor(s) multiple times during the pumping phase of the fluid delivery cycle and can generate alarms based upon a single indication or a cumulative indication of air in the line. The pump can include multiple air sensors spaced along the delivery line so that the method can use the multiple signals therefrom to distinguish real moving air bubbles from false positives and/or air bubbles adhered to the inner wall of the line.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: January 29, 2013
    Assignee: Hospira, Inc.
    Inventors: David T. Wang, Robert P. Cousineau, Lori E. Lucke, Marwan A. Fathallah, John Stephen Ziegler
  • Patent number: 8361022
    Abstract: An apparatus and method for transdermally delivering a biologically active agent comprising a delivery system having a microprojection member (or system) that includes a plurality of microprojections (or array thereof) that are adapted to pierce through the stratum corneum into the underlying epidermis layer, or epidermis and dermis layers. In one embodiment, the PTH-based agent is contained in a biocompatible coating that is applied to the microprojection member.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: January 29, 2013
    Assignee: Alza Corporation
    Inventors: Mahmoud Ameri, Michel J. N. Cormier, Yuh-Fun Maa, Peter E. Daddona, Marika Kamberl
  • Patent number: 8343098
    Abstract: A method of removing air from a flow path of a medical fluid injection system is described. An exemplary method performed by the medical fluid injection device includes delivering a first amount of fluid to a fluid flow path, isolating fluid flow along the flow path, forming a vacuum condition upstream of the fluid isolation, re-establishing fluid communications along the flow path, and delivering a second amount of fluid to the flow path.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: January 1, 2013
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Sidney D. Nystrom, David J. Hajicek, Touhid Khan
  • Publication number: 20120226235
    Abstract: The invention provides a fluidic system (100) comprising a permeable membrane (152), in which one side of the permeable membrane is in contact with a fluid, this lowering the partial pressure of a gas on the other side of the membrane being by raising the pressure of vapour from the fluid by diffusion from the fluidic system through the permeable membrane. This will aid in expelling a gas from a fluid assembly as well as reducing the likelihood of gas entering into the fluid assembly.
    Type: Application
    Filed: August 12, 2008
    Publication date: September 6, 2012
    Applicant: Novo Nordisk A/S
    Inventors: Bjørn Gullak Larsen, Steffen Hansen, Kristian Glejbøl, Jens Peter Jensen
  • Publication number: 20120172800
    Abstract: An intravenous (“IV”) liquid delivery system includes: an IV pump tubing set; a shuttle pump or membrane pump actuator operable with the IV pump tubing set; upstream and downstream valve actuators operable with the IV pump tubing set; the IV pump tubing set including an air removal device; an air detector configured to sense air in the IV pump tubing set; a control unit configured and arranged to (i) open the upstream valve actuator and close the downstream valve actuator to allow the pump actuator to draw liquid into a pump actuation portion of the IV pump tubing set, and (ii) close the upstream valve actuator and open the downstream valve actuator to allow the pump actuator to push liquid out of the pump actuation portion, the system configured to attempt to remove the air via the air removal device while operating the upstream and downstream valve actuators according to (i) and (ii).
    Type: Application
    Filed: December 29, 2010
    Publication date: July 5, 2012
    Applicants: BAXTER HEALTHCARE S.A., BAXTER INTERNATIONAL INC.
    Inventors: Thomas Dudar, Ross Krogh, James Martucci, Shmuel Sternberg
  • Patent number: 8083716
    Abstract: Various embodiments of the present invention are directed to limiting a presence of air bubbles in a fluidic medium expelled from a reservoir. In various embodiments, a plunger head within a reservoir is shaped so as to limit a presence of air bubbles in a fluidic medium expelled from the reservoir. Also, in various embodiments, a reservoir is shaped so as to limit a presence of air bubbles in a fluidic medium expelled from the reservoir. In some embodiments, both a reservoir and a plunger head within the reservoir are shaped so as to limit a presence of air bubbles in a fluidic medium expelled from the reservoir.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: December 27, 2011
    Assignee: Medtronic Minimed, Inc.
    Inventors: Julian D. Kavazov, Sheldon B. Moberg, Ian B. Hanson, Colin A. Chong, Eric M. Lorenzen, Rafael Bikovsky, Truong Gia Luan, Mike Lee, Christopher G. Griffin, Thomas Miller
  • Publication number: 20110245771
    Abstract: The present invention provides an enteral feeding set comprising tubing adapted for fluid flow therethrough and further adapted to be engaged by a pump unit, a valve mechanism in direct communication with said tubing, said valve mechanism being adapted to be engaged by said pump unit, and a feeding set indicator for permitting identification of the functional configuration of said administration feeding set by said pump unit, characterized in that said tubing comprises at least two inlet tubes on an upstream side of said valve mechanism and a single outlet tube on a downstream side thereof and wherein said inlet tubes each include a connector for connecting said tube to a supply of fluid at a connection end thereof, each of said connectors being of like form but visually distinguishable for indicating to a user which supply of fluid each connector should be attached thereto.
    Type: Application
    Filed: October 5, 2010
    Publication date: October 6, 2011
    Applicant: TYCO HEALTHCARE GROUP LP
    Inventor: Paul J. Daly
  • Publication number: 20110238013
    Abstract: A method and pump that accurately senses air in a fluid delivery line pulses or activates and deactivates the air sensor(s) multiple times during the pumping phase of the fluid delivery cycle and can generate alarms based upon a single indication or a cumulative indication of air in the line. The pump can include multiple air sensors spaced along the delivery line so that the method can use the multiple signals therefrom to distinguish real moving air bubbles from false positives and/or air bubbles adhered to the inner wall of the line.
    Type: Application
    Filed: June 7, 2011
    Publication date: September 29, 2011
    Applicant: HOSPIRA, INC.
    Inventors: David T. Wang, Robert P. Cousineau, Lori E. Lucke, Marwan A. Fathallah, John S. Ziegler
  • Publication number: 20110190700
    Abstract: A reservoir includes a reservoir body portion and a collecting portion. The reservoir body portion having a wall defining an interior volume for containing fluidic media, the reservoir having a first port in the reservoir body portion to be in fluid flow communication with the interior volume, the first port for expelling fluidic media from the interior volume as a plunger is moved within the reservoir. The collecting portion having a wall defining a volume in fluid flow communication with the interior volume, the volume of the collecting portion for collecting gas bubbles in the fluidic media as the fluidic media is expelled through the first port from the interior volume of the reservoir body portion, the reservoir having a second port in the collecting portion to be in fluid flow communication with the volume of the collecting portion, the second port for receiving fluidic media into the reservoir.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Inventors: Julian D. KAVAZOV, Ian B. Hanson, Colin A. Chong, Eric M. Lorenzen, Rafael Bikovsky, Truong Gia Luan, Mike Teang Lee, Thomas P. Miller
  • Patent number: 7981082
    Abstract: A method and pump that accurately senses air in a fluid delivery line pulses or activates and deactivates the air sensor(s) multiple times during the pumping phase of the fluid delivery cycle and can generate alarms based upon a single indication or a cumulative indication of air in the line. The pump can include multiple air sensors spaced along the delivery line so that the method can use the multiple signals therefrom to distinguish real moving air bubbles from false positives and/or air bubbles adhered to the inner wall of the line.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: July 19, 2011
    Assignee: Hospira, Inc.
    Inventors: David T. Wang, Robert P. Cousineau, Lori E. Lucke, Marwan A. Fathallah, John S. Ziegler
  • Publication number: 20110137236
    Abstract: A medical fluid delivery system includes a fluid disposable configured to hold and transport a medical fluid and an air separation chamber in fluid communication with the fluid disposable. The air separation chamber includes at least one fluid baffle floating within the air separation chamber and configured to separate air from medical fluid traveling through the chamber.
    Type: Application
    Filed: February 18, 2011
    Publication date: June 9, 2011
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Michael R. Prisco, Atif M. Yardimci, Serhan Acikgoz, James C. Laird, Shincy J. Maliekkal, Justin B. Rohde
  • Patent number: 7846132
    Abstract: A cannula insertion device includes a housing defining an opening for receiving therethrough a cannula and further defining a channel, and a cannula forming a lumen, the cannula adapted for sliding movement within the housing from a retracted position to an extended position. When the cannula is in the retracted position, the lumen is located remotely from the channel and the channel is in fluidic communication with the opening. When the cannula is in the extended position, the lumen is in fluidic communication with the channel.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: December 7, 2010
    Assignee: CeQur SA
    Inventors: Peter Gravesen, Heiko Arndt
  • Patent number: 7842009
    Abstract: An interventional catheter assembly comprising a catheter for insertion and guidance to a target site in a body lumen or a cavity and an operating head mounted in proximity to a distal end of the catheter and comprising a system for removing obstructive material from the target site is provided. In certain embodiments, the catheter assembly includes at least one aspiration port located proximal to the operating head that communicates with a first sealed lumen for withdrawing fluids and obstructive material from the target site, together with at least one liquid infusion port penetrating the catheter and located proximal to the at least one aspiration port that communicates with a second sealed lumen for supplying fluid to a location in proximity to the target site.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: November 30, 2010
    Assignee: Pathway Medical Technologies, Inc.
    Inventors: Casey Torrance, Kate Walsh, Jared Salstrom, Scott Youmans, Edward I. Wulfman