Disposable Cartridge, Tube Or Bag Forms Heated Flow Path (e.g., Blood Bag, Etc.) Patents (Class 392/470)
  • Patent number: 10780258
    Abstract: A thermic infusion system includes a thermal tubing system and a control system. The thermal tubing system has a tubal body with at least one tubal segment. The tubal segment includes a thermal element that may receive energy, such as electrical energy, to increase temperature within the tubal body. The control system may regulate the amount of energy received by the tubal segment using one or more sensors positioned within the tubal body.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: September 22, 2020
    Assignee: Life Warmer Inc.
    Inventors: John Robert Pettini, Charles John Tepper, Richard Ray Thomson, James Kevin McCoy, Jeffrey Alan Garrett
  • Patent number: 10518005
    Abstract: A fluid management system including a pass-through fluid volume measurement system to provide continuous measurement of fluid returned from a surgical site during transit to a waste collection system. The pass-through fluid volume measurement system eliminates the need to physically replace full fluid collection containers during the medical procedure with new, empty fluid collection containers.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: December 31, 2019
    Assignee: Thermedx, LLC
    Inventors: Douglas L. Carr, Nilesh R. Patel
  • Patent number: 10499458
    Abstract: Dry thawing systems and devices for thawing biological substances are provided herein. Methods for thawing biological substances are also provided.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: December 3, 2019
    Assignee: FreMon Scientific, Inc.
    Inventors: Menachem Shavit, Frederick J. Thacher
  • Patent number: 10369298
    Abstract: A skin-patch type large volume drug delivery device (1) comprising a heat exchanger (24) to extract thermal energy from the body/skin surface of the user and to supply the extracted thermal energy to increase the temperature of the medicament. Alternatively or in addition, a Peltier element (35) can be used for the same purpose. The device includes a temperature sensor (31) and a controller (16) for varying the flow rate within the heat exchanger as a function of the drug temperature.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 6, 2019
    Assignee: Sanofi
    Inventor: Christian Nessel
  • Patent number: 9889250
    Abstract: This document discusses, among other things, an apparatus comprising a pump configured to deliver a fluid from a cartridge, a display a temperature sensor and a controller. The controller is configured to compare a temperature within the cartridge as measured by the temperature sensor to a threshold temperature and cause the display to display a message relating to temperature when the measured temperature goes beyond the threshold temperature.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: February 13, 2018
    Assignee: Tandem Diabetes Care, Inc.
    Inventors: Michael Blomquist, Timothy Bresina, William Van Dyke, Gail Beth Bynum, Michael Welsch
  • Patent number: 9770541
    Abstract: A fluid management system including a pass-through fluid volume measurement system to provide continuous measurement of fluid returned from a surgical site during transit to a waste collection system. The pass-through fluid volume measurement system eliminates the need to physically replace full fluid collection containers during the medical procedure with new, empty fluid collection containers.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: September 26, 2017
    Assignee: THERMEDX, LLC
    Inventors: Douglas L. Carr, Nilesh R. Patel
  • Patent number: 9657433
    Abstract: The present invention relates to a dryer and a controlling method of a dryer, which can sense whether there is a malfunction or can precisely sense a drying rate of laundry. A dryer comprising a drum that laundry is stored in and a heater that supplies hot air to the drum, the dryer includes a sensing circuit that outputs a pulse signal based on contact with the laundry; and a micom that controls the dryer, wherein the micom determines a drying rate of the laundry or whether there is a malfunction in the dryer based on the pulse signal outputted from the sensing circuit.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: May 23, 2017
    Assignee: LG Electronics Inc.
    Inventors: Young Jin Doh, Jae Seok Kim, Seog Ho Go
  • Patent number: 9474848
    Abstract: Fluid management system and method of operating a fluid management system which may provide one or more functions associated with suction, irrigation, distention, deficit monitoring, infusion, fluid warming, and the like. The fluid management system may be selectable between pressure control and flow control modes.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: October 25, 2016
    Assignee: Thermedx, LLC
    Inventors: Jeffrey B Williams, Douglas L Carr
  • Patent number: 9410241
    Abstract: The present invention provides a method for separating a surface layer of a diamond, which comprises implanting ions into a diamond to form a non-diamond layer near a surface of the diamond; and etching the non-diamond layer in the diamond by applying an alternating-current voltage across electrodes in an electrolytic solution; and a method for separating a grown layer of a diamond, which further comprises the step of growing a diamond by a vapor-phase synthesis method, after forming a non-diamond layer according to the above-described method. The invention is applicable to various single-crystal and polycrystal diamonds. More specifically, even with a large single-crystal diamond, a portion of the single-crystal diamond can be efficiently separated in a reusable form in a relatively short period of time.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: August 9, 2016
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Yoshiaki Mokuno, Akiyoshi Chayahara, Hideaki Yamada
  • Patent number: 9272086
    Abstract: Fluid management systems and methods of operating fluid management systems which may provide one or more functions associated with suction, irrigation, distention, deficit monitoring, infusion, fluid warming, and the like. Some example embodiments may include infra-red lamps arranged to heat fluid flowing through a disposable cartridge. Some example embodiments may provide a three-dimensional fluid path through the cartridge and/or multi-stage heating capabilities. Some example fluid management systems may be selectable between pressure control and flow control modes.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: March 1, 2016
    Assignee: Thermedx, LLC
    Inventors: Jeffrey B. Williams, Kenneth R. Pyles, Douglas L. Carr
  • Patent number: 9250029
    Abstract: An article warmer that is detachable to and from a faucet head and utilizes diverted water is provided. In one embodiment, the article warmer comprises a warming enclosure and a heat transfer portion that conducts heat from the diverted water to the article to be heated. The heat transfer portion may be incorporated into the wall of the enclosure or may partially disconnect from the enclosure, allowing the user to wrap articles to be warmed around the heat transfer portion. In another embodiment, the heat transfer portion is configured to form the warming enclosure. Insulating, temperature indicating, and water resistant materials may be used in the construction of the article warmer.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: February 2, 2016
    Inventor: Christopher Snowden Moore
  • Publication number: 20150059586
    Abstract: The present invention concerns a heating unit (100) for a beverage preparation machine (1) said machine (1) being suitable for preparing a beverage by mixing a beverage ingredient with a fluid, said machine comprising a pump for circulating said beverage preparation fluid through said machine at least from a fluid source to said heating unit, the heating unit (100) being suitable for heating said fluid and comprising: a housing (103) defining a fluid heating chamber (108), and a heating element (104) located inside said housing (103) and being adapted to heat said fluid therein, wherein the heating unit (100) further comprises a pre-heating tube (101) for conveying said fluid received from said pump through said heating unit (100), the pre-heating tube (101) comprising a tube inlet (102) and a tube outlet (107), the tube outlet (107) connecting with the heating chamber (108), and wherein the pre-heating tube (101) is located at least partly within the housing (103) in such a way that the heating element (104)
    Type: Application
    Filed: December 6, 2012
    Publication date: March 5, 2015
    Applicant: NESTEC S.A.
    Inventors: Gerhard Pirker, Michael Ayoub
  • Patent number: 8965186
    Abstract: The invention is a device that consists of an assemblage of shielded resistors and temperature monitoring sensors. The managing of these functions is effected by central control unit, which receives electricity and converts it to a 40 to 60 Volt band thus feeding the resistors and controlling the chosen temperature through sensors included in the device.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: February 24, 2015
    Inventors: João Bosco Corrêa Bittencourt, José Eduardo Alves Pereira
  • Patent number: 8948581
    Abstract: A warming unit and method for warming an infusion medium prior to introducing the medium into a patient's body. The apparatus includes an outer casing, inlet and outlet tubes secured to the outer casing, a fluid conduit for transporting the infusion medium through the warming unit, and a heating element disposed proximate to the fluid conduit for warming the infusion medium flowing therethrough. The warming unit can form part of a system, which further includes a controller for controlling various functions of and separate from the warming unit, a reservoir containing the infusion medium, and a power source for powering the warming unit.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: February 3, 2015
    Assignee: Thermacore Technologies, Inc.
    Inventors: C. Kenneth French, Garrett Barker, Wyatt Earp
  • Patent number: 8920372
    Abstract: An IV line temperature controlled warming device includes a housing and a fluid cassette or cartridge that receives fluid from an IV line and includes intravenous line tubing arranged in a preformed configuration. The configuration includes tubing sections arranged in generally circular and concentric portions and a central serpentine tubing section that basically reverses fluid flow and facilitates flow in opposing directions within adjacent tubing sections. The fluid cassette is retained within the device on a base plate partially disposed within a device housing interior, while a housing cover is selectively opened and closed to permit access to the base plate. The base plate includes a heater plate disposed thereon, while the cover and heater plate each include heating elements to apply heat to opposing surfaces of the tubing cassette. The heating elements are controlled by a controller in response to measured temperatures of the heater plate and fluid.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: December 30, 2014
    Assignee: Medical Solutions, Inc.
    Inventors: Durward I. Faries, Jr., Bruce R. Heymann, Calvin Blankenship, David Hendrix
  • Publication number: 20140169775
    Abstract: A fluid warming device may include a housing comprising a main body, a heat exchange body receiving compartment, and a cover movably coupled to the main body between an open position and a closed position; a heater assembly disposed within the main body and having a heat conducting surface disposed proximate the heat exchange body receiving compartment; and a heat exchange body removably disposable in the heat exchange body receiving compartment of the main body and having an input port and an output port to couple the heat exchange body to tubing to flow a fluid to be warmed through the heat exchange body. In another aspect, a fluid warming system increases or decreases power to a heater assembly to adjust the fluid temperature to ensure that the fluid is at an appropriate temperature when it reaches the patient.
    Type: Application
    Filed: February 24, 2014
    Publication date: June 19, 2014
    Applicant: Vital Signs, Inc.
    Inventor: David E. Cassidy
  • Patent number: 8699866
    Abstract: Disclosed is a heating apparatus. In the heating apparatus, carbon nanotube heating elements for heating fluid flowing through a flow channel in a heating chamber are disposed at a heat transfer part. The contact area of the carbon nanotube heating elements and the heat transfer part is 50% or more of the contact area of the heat transfer part and the fluid. Therefore, it is possible to more efficiently heat the fluid.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: April 15, 2014
    Assignee: LG Electronics Inc.
    Inventors: Sanghun Lee, Song Choi
  • Patent number: 8660415
    Abstract: A fluid warming device may include a housing comprising a main body, a heat exchange body receiving compartment, and a cover movably coupled to the main body between an open position and a closed position; a heater assembly disposed within the main body and having a heat conducting surface disposed proximate the heat exchange body receiving compartment; and a heat exchange body removably disposable in the heat exchange body receiving compartment of the main body and having an input port and an output port to couple the heat exchange body to tubing to flow a fluid to be warmed through the heat exchange body. In another aspect, a fluid warming system increases or decreases power to a heater assembly to adjust the fluid temperature to ensure that the fluid is at an appropriate temperature when it reaches the patient.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: February 25, 2014
    Inventor: David E. Cassidy
  • Publication number: 20140046248
    Abstract: The present invention relates to a device designed to promote heat exchange to/from a medical liquid ML. The device comprises an inlet, an outlet and a duct adapted to contain a flow of the medical liquid ML. The duct is enclosed between two walls, has a planar development defining a mean plane ?, and comprises means for promoting turbulence in the flow of the liquid ML. At least one wall of the duct is suitable to allow a heat exchange with the flow of the liquid ML. The means for promoting turbulence comprises a plurality of fins, wherein each fin has a lenticular cross section and defines its own mean plane ?n substantially perpendicular to plane ?. The invention also relates to a disposable cassette for use in a PD/APD treatment, comprising a polymeric structure defining a first part, suitable for pumping and distributing the medical liquid ML, SML, and a second part comprising a device similar to the one described above.
    Type: Application
    Filed: June 5, 2012
    Publication date: February 13, 2014
    Applicant: Sis-ter S.p.A.
    Inventors: Massimo Fini, Reinhold Reiter
  • Patent number: 8620149
    Abstract: A fluid warming cassette for use in a fluid warming system includes a first sheet, a second sheet and a flexible spacer having a serpentine opening. At least one of the first and second sheets is a flexible plastic sheet. The spacer is positioned between the first and second sheets and the first and second sheets are joined together over the spacer to form a fluid container having a fluid channel. The fluid container includes a fluid channel with inlet and outlet ports in fluid communication with the fluid channel. The fluid warming cassette is capable of operating under negative pressure without collapse of the fluid channel in the cassette.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: December 31, 2013
    Assignee: Arizant Healthcare Inc.
    Inventors: Scott Allen Entenman, Keith J. Leland
  • Patent number: 8577211
    Abstract: In various aspects, the present application describes a heating element assembly for a liquid heater, embodiments of which may include an electrically conductive termination rod with a base portion defining a securement opening. An electrically conductive fastener may include a shank portion for fitting into the securement opening. The heating element assembly may have a head portion larger than the securement opening, and an electrical resistance heating element comprising a continuous coil. An end portion of the continuous coil may be formed to loop around the fastener shank portion. The end portion may be in electrical contact with the fastener head portion and the termination rod base portion. An adjacent portion of the continuous coil may be formed to clear the fastener head portion as the adjacent portion extends from the end portion. The continuous coil may have a coil axis substantially aligned with a lengthwise axis of the fastener.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: November 5, 2013
    Assignee: Eemax Incorporated
    Inventors: Brian Lucker, Jeff Hankins
  • Patent number: 8467671
    Abstract: A warming unit and method for warming an infusion medium prior to introducing the medium into a patient's body. The apparatus includes an outer casing, inlet and outlet tubes secured to the outer casing, a fluid conduit for transporting the infusion medium through the warming unit, and a heating element disposed proximate to the fluid conduit for warming the infusion medium flowing therethrough. The warming unit can form part of a system, which further includes a controller for controlling various functions of and separate from the warming unit, a reservoir containing the infusion medium, and a power source for powering the warming unit.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: June 18, 2013
    Assignee: Thermacore Technologies, Inc.
    Inventors: C. Kenneth French, Garrett Barker, Wyatt Earp
  • Patent number: 8450666
    Abstract: A water boiling device includes a heat tank unit received in a machine body, a high frequency induction heater, and a heat pipe unit. The heat tank unit includes first and second heating tanks in communication with each other. Outside water can flow into the first and second heating tanks. The high frequency induction heater includes a heat pipe induction coil and first and second induction coils. The heat pipe unit includes first and second heating pipes. An upper section of each heating pipe is received in one of the heating tanks, and a lower section of each heating pipe extends out of the heating tanks and is inserted into the heat pipe induction coil. The first and second heating tanks will heat up to heat the water in the first and second heating tanks when a high frequency current is passed through the heat pipe induction coil and first and second induction coils.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: May 28, 2013
    Inventors: Shun-Chi Yang, Mao-Hsiung Yang, Tsung-Chuan Yang, Fang-Ming Wu, Cheng-Yen Wu
  • Patent number: 8385731
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 26, 2013
    Assignee: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Patent number: 8313460
    Abstract: Devices, systems and methods for controlling fluid temperatures from more than one fluid containers prior to their infusion into a human body are disclosed. The device includes a power supply source for providing power; an input/output interface for receiving fluid temperature data from thermal sensors and for transmitting duty-cycle signals to each of the fluid warming unit; a processing unit for comparing fluid temperature data with a permissible fluid temperature range, for calculating a fluid temperature differential, and for apportioning the available work cycle of the power supply source; and a controller for adjusting the duty-cycle of each fluid warming unit based on the fluid temperature differentials, so that during each work cycle all available power provided by the power supply source is delivered to only one of the fluid warming units at a time.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: November 20, 2012
    Assignee: General Electric Company
    Inventor: David E. Cassidy
  • Patent number: 8180206
    Abstract: An infusion unit includes a heating unit with opposed heating plates. A heat exchanger has a fluid flow path receivable between the heating plates to which heat is conducted by contact with the heating plates. Infusate flowing under pressure through the fluid flow path is heated by conduction from the heating plates through the fluid container. When the flow of infusate is stopped or interrupted, infusate trapped in the heat exchanger is displaced to a reservoir in the heat exchanger. Displacement of the trapped infusate reduces friction between the fluid container and the heating plates, which assists in extraction of the heat exchanger from the heating unit.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: May 15, 2012
    Assignee: Arizant Healthcare Inc.
    Inventors: Mark T. Bieberich, Melanie L. Collins, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf, Winston T. Tan
  • Patent number: 8150244
    Abstract: A fluid warming device includes axially or longitudinally slidable covers that retain a removable heat exchange body in a housing in heat exchange communication with a heater assembly while allowing flow through the heat exchange body to be observed. In another aspect, a fluid warming system increases or decreases power to a heater assembly to adjust the fluid temperature to ensure that the fluid is at an appropriate temperature when it reaches the patient.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: April 3, 2012
    Assignee: General Electric Company
    Inventor: David E. Cassidy
  • Publication number: 20120063755
    Abstract: In various aspects, the present application describes a heating element assembly for a liquid heater, embodiments of which may include an electrically conductive termination rod with a base portion defining a securement opening. An electrically conductive fastener may include a shank portion for fitting into the securement opening. The heating element assembly may have a head portion larger than the securement opening, and an electrical resistance heating element comprising a continuous coil. An end portion of the continuous coil may be formed to loop around the fastener shank portion. The end portion may be in electrical contact with the fastener head portion and the termination rod base portion. An adjacent portion of the continuous coil may be formed to clear the fastener head portion as the adjacent portion extends from the end portion. The continuous coil may have a coil axis substantially aligned with a lengthwise axis of the fastener.
    Type: Application
    Filed: September 14, 2010
    Publication date: March 15, 2012
    Inventors: Brian LUCKER, Jeff HANKINS
  • Publication number: 20110270180
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Application
    Filed: June 30, 2011
    Publication date: November 3, 2011
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Publication number: 20110238012
    Abstract: A lithium polymer (LiPo) battery pack having LiPo battery cells is provided which includes battery protection circuitry, charging circuitry, cell balancing circuitry, and control and communication circuitry. The batteries can be charged while in use by an internal charger. Battery charging and discharging are accomplished in a controlled and protected manner to avoid overcharging and overdischarging conditions. The novel battery pack has built-in safeguards against dangerous LiPo battery conditions and is implemented in a small, portable unit which contains the battery cells, control and protection circuitry, internal charger and display gauge. The battery pack is useful for powering an intravenous fluid warmer or other medical or electrical devices and equipment.
    Type: Application
    Filed: June 7, 2011
    Publication date: September 29, 2011
    Inventor: David Cassidy
  • Patent number: 7983540
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: July 19, 2011
    Assignee: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Patent number: 7887509
    Abstract: Medical device for the delivery and/or the extraction of fluid to and/or from a patient, said medical device comprising a pumping unit (1) for pumping a fluid, a warming chamber (2) with an inlet (3) and an outlet (4) and containing a heating element (5) for warming said fluid, fluid volume measuring means (13-18) and a fluid line crossing said pumping and warming units (1, 2), characterized by the fact that said heating element (5) is adapted to be fully immersed in the fluid which is crossing said warming chamber (2) and by the fact that said fluid measuring means comprise temperature sensing means adapted to measure the fluid temperature on at least two separate points and electrical parameter measuring means for determining at least one electrical parameter such as current, power or frequency applied to said heating element (5). The invention also includes a method for using this device.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: February 15, 2011
    Assignee: Debiotech S.A.
    Inventors: Pierre Thiebaud, Didier Vecten, Yvan Favre, Hans-Gerd Evering
  • Patent number: 7865072
    Abstract: A fluid warming device includes axially or longitudinally slidable covers that retain a removable heat exchange body in a housing in heat exchange communication with a heater assembly while allowing flow through the heat exchange body to be observed. In another aspect, a fluid warming system increases or decreases power to a heater assembly to adjust the fluid temperature to ensure that the fluid is at an appropriate temperature when it reaches the patient.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: January 4, 2011
    Assignee: General Electric Company
    Inventor: David E. Cassidy
  • Patent number: 7853131
    Abstract: A fluid warming cassette with a stiffening frame structure and an integral handle is provided to support a parenteral fluid container. The fluid container is desirably thin to minimize heat exchange inefficiencies. The frame structure permits the thin fluid container to be inserted into the narrow space between fixed position warming plates of a warming unit. The frame structure has a quadrilateral shape with sides and ends. The fluid container is attached, at its periphery to the sides and ends of the frame structure, within the quadrilateral shape. Part of the frame structure is formed into a handle to assist in both the insertion and removal of the cassette from a warming unit.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: December 14, 2010
    Assignee: Arizant Healthcare Inc.
    Inventors: Scott D. Augustine, Scott A. Entenman, Keith J. Leland, Gary R. Maharaj, Teryl L. Woodwick-Sides
  • Patent number: 7809254
    Abstract: A dialysis fluid heating system includes a dialysis fluid heater; a heating portion of a dialysis fluid carrying set, the heating portion configured to be placed in contact with a surface of the dialysis fluid heater to heat a dialysis fluid; a pneumatic source connected to the dialysis fluid heater; and a logic implementer configured to cause the pneumatic source to apply a negative pressure between the heating portion and the surface of the dialysis fluid heater.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: October 5, 2010
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Jennifer Lindsay, Richard Kienman, Douglas W. Reitz, Dan Roush
  • Publication number: 20100185149
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Application
    Filed: March 11, 2010
    Publication date: July 22, 2010
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Patent number: 7722839
    Abstract: An apparatus and method are provided to rapidly thaw and heat frozen bags of biological materials, such as plasma. The apparatus has a hollow bladder having a flexible wall that is placed in contact with the bag. A circulation system draws fluid from a reservoir and fills the bladder with the fluid. The circulation system also drains fluid from the bladder. A heater in the reservoir heats the fluid before the fluid enters the bladder. As heated fluid flows through the bladder, heat is transferred through the bladder wall to the plasma bag to thaw the biological material. The bladder wall expands against the plasma bag as the bladder fills with fluid, and contracts from the plasma bag as the bladder is drained. The expansion and contraction of the bladder wall agitates the plasma bag and biological material to accelerate the thawing process.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: May 25, 2010
    Assignee: Cytotherm, L.P.
    Inventor: Roman Kuzyk
  • Patent number: 7720362
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: May 18, 2010
    Assignee: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Patent number: 7715700
    Abstract: An infusion fluid warming apparatus for warming an infusion fluid to a predetermined temperature prior to supply of the infusion fluid into a living body through an infusion fluid tube. The apparatus includes: (a) a tube holding device detachably holding the infusion tube; and (b) a heat accumulator member generating a latent heat in phase change thereof from liquid phase to solid phase. The heat accumulator member is disposed in the tube holding device, so as to warm the infusion fluid passing through the infusion fluid tube that is held by the tube holding device, by the latent heat generated in the phase change from the liquid phase to the solid phase. Also, disclosed is an infusion fluid warming method.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: May 11, 2010
    Inventor: Genshirou Ogawa
  • Patent number: 7657163
    Abstract: A fluid warming device for warming medical fluids, such as intravenously administered blood or saline solutions, is provided. The fluid warming device includes a conduit at least partially formed from a material with positive temperature coefficient properties. A supply of blood or other fluids may pass through the device and be heated to temperatures appropriate for administration to a patient.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: February 2, 2010
    Assignee: Nellcor Puritan Bennett LLC
    Inventor: Paul W Martens
  • Publication number: 20090245765
    Abstract: The present invention relates to a system for increasing the temperature of a fluid being infused into a patient's body while the infusion is taking place. The present invention also provides for improved monitoring of air in the infusion system such to prevent the introduction of air into the patient's body receiving the fluid infusion. The present invention also provides for a system pump which provides a variable flow rate that serves a vast amount of infusion needs and purposes. A disposable cartridge in accordance with the present invention will allow for the efficient transfer of heat energy to the fluid being infused into the patient's body. The cartridge will further ensure that deleterious amounts of air will not be introduced into the patient's body.
    Type: Application
    Filed: June 11, 2009
    Publication date: October 1, 2009
    Applicant: SMISSON-CARTLEDGE BIOMEDICAL LLC
    Inventors: Hugh F. SMISSON, III, Richard G. CARTLEDGE, Jeffrey W. JERRELL, John M. CHRISTENSEN, Michael L. KOLTZ, Frederick J. YORK, Bradford J. RAINIER
  • Publication number: 20090010627
    Abstract: A dialysis fluid heating system includes a dialysis fluid heater; a heating portion of a dialysis fluid carrying set, the heating portion configured to be placed in contact with a surface of the dialysis fluid heater to heat a dialysis fluid; a pneumatic source connected to the dialysis fluid heater; and a logic implementer configured to cause the pneumatic source to apply a negative pressure between the heating portion and the surface of the dialysis fluid heater.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 8, 2009
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Jennifer Lindsay, Richard Kienman, Douglas W. Reitz, Dan Roush
  • Publication number: 20080267599
    Abstract: A heat exchanger has a laminar fluid flow path receivable between the heating plates of a high flow rate infusion unit to which heat is conducted by contact with the heating plates. A bubble trap and a valve are integrated with the heat exchanger. The bubble trap collects air from the infusate exiting the laminar flow path, and includes an air vent in contact with the infusate that vents the air from the bubble trap. The valve shuts off the flow of infusate if air is detected in the bubble trap.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 30, 2008
    Applicant: Arizant Healthcare Inc.
    Inventors: Randall C. Arnold, Mark T. Bieberich, Gary L. Hansen, Andrew J. McGregor, Christopher A. Miller, Donald E. Stapf
  • Patent number: 7403704
    Abstract: A dual-channel fluid temperature control apparatus controls temperature of cardiac fluids during surgery using power from an electrical convenience outlet having a power limit. A first pump receives a first heat exchange fluid to selectively pump the first heat exchange fluid within a first circulation channel. A second pump receives a second heat exchange fluid to selectively pump the second heat exchange fluid within a second circulation channel. A first heater unit comprises a first plurality of independently actuatable heating elements each having a respective power consumption. A second heater unit comprises a second plurality of independently actuatable heating elements each having a respective power consumption. A controller selectably actuates the first and second pumps and the first and second pluralities of heating elements to selectably heat or cool the first and second heat exchange fluids such that power draw of all activated pumps and heating elements is maintained within the power limit.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: July 22, 2008
    Assignee: Terumo Cardiovascular Systems Corporation
    Inventors: Rolando A. Eccleston, Richard M. Matovina
  • Patent number: 7394976
    Abstract: A fluid warming cassette for use in a fluid warming system includes a first sheet, a second sheet and a flexible spacer having a serpentine opening. At least one of the first and second sheets is a flexible plastic sheet. The spacer is positioned between the first and second sheets and the first and second sheets are joined together over the spacer to form a fluid container having a fluid channel. The fluid container includes a fluid channel with inlet and outlet ports in fluid communication with the fluid channel. The fluid warming cassette is capable of operating under negative pressure without collapse of the fluid channel in the cassette.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: July 1, 2008
    Assignee: Arizant Healthcare Inc.
    Inventors: Scott Allen Entenman, Keith J. Leland
  • Patent number: 7316666
    Abstract: A fluid warming cassette useful in a system for warming parenteral fluids is provided. The cassette comprises a thermally conductive, flexible fluid container with a fluid channel. Rails are disposed in the fluid container near its periphery, and a stiffener is disposed in the fluid container, between the rails, near an end of the cassette. Together, the rails and stiffener impart structural rigidity to the fluid container. The fluid container, rails and stiffener are joined into an integrated structure useful as a fluid warming cassette. One or more of the rails has a multilateral shape to key the cassette for insertion into a fluid warming unit.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: January 8, 2008
    Assignee: Arizant Healthcare Inc.
    Inventors: Scott A. Entenman, Wayne E. Schmidt
  • Patent number: 7289724
    Abstract: The invention proposes a liquid heating bag 1, in particular, a blood heating bag and a bag heating means 30 for heating liquids, e.g. cooled blood, which flow through the liquid heating bag 1, to a temperature suitable for transfusion. The liquid heating bag 1 has a flow volume 3 formed by at least two flexible plastic foils which are connected to each other at four delimiting edges 5, 6, 7, 8, wherein the flow volume 3 has a flat, substantially trapezoidal basic shape which is delimited by the delimiting edges 5, 6, 7, 8. An inlet line opening 12 and an outlet line opening 14 are disposed on a first delimiting edge 5, and an insertion tab 15 is disposed on a second delimiting edge 6 opposite to the first delimiting edge 5. The liquid heating bag 1 has a liquid flow guiding seam 20 which is formed by connecting the plastic foils in the region of the flow volume 3. The insertion tab 15 is formed as part of the plastic foils, which projects past the second delimiting edge 6.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: October 30, 2007
    Assignee: WWT Technischer Gerätebau GmbH
    Inventors: Markus Fürnrohr, Wolfgang Theilacker-Beck, Matthias Theilacker
  • Patent number: 7236694
    Abstract: This invention is based on combining dual heating means to warm the infused blood or other fluids to a normal body temperature and to compensate for any heat loss from the intravenous line. The infusate is directly heated to a normothermic temperature inside the apparatus as it flows in a plastic pouch having a winding shape passage. A particular object of the present invention is to provide a new and improved intravenous line heat exchanger to further warm the infusate at high flow rates, or to compensate for any heat loss to the environment at low or stagnant flow rates. The present invention provides a closed circuit heating fluid for the intravenous heat exchanger. The heated fluid used to warm the infusate in the intravenous line is maintained in a clean and isolated circuit. Either dray or wet fluids are used to warm the infusate in the intravenous line heat exchanger. The wet warming fluid is supplied in a disposable pouch fitted inside a warming chamber and integrated with the intravenous line.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: June 26, 2007
    Inventor: Jacques Chammas
  • Patent number: 7164852
    Abstract: The present invention is directed to a fluid warming container (a.k.a., cassette) having an integrated heating element attached to the container, not the warming device as conventionally done. The heating element provides thermal energy to the fluid contained in the container. The fluid contained in the container is designed to be injected and/or delivered, eventually and normally immediately, into a patient.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: January 16, 2007
    Assignee: Gaymar Industries, Inc.
    Inventors: Karl H. Cazzini, Thomas P. Stewart
  • Patent number: 7153285
    Abstract: An in-line fluid heater for heating fluid, such as dialysis fluid for use in dialysis therapy is provided. The fluid heater is a dual heater having a primary infrared heater and a secondary plate heater. A controller is operatively connected to the infrared heater and to the plate heater and operates one or both of the infrared heater and the plate heater to maintain a temperature of the fluid.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: December 26, 2006
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Brian Lauman, John Parish