WO2015147901A1 - Élément chauffant de tubulure de fluide néonatal - Google Patents

Élément chauffant de tubulure de fluide néonatal Download PDF

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Publication number
WO2015147901A1
WO2015147901A1 PCT/US2014/048079 US2014048079W WO2015147901A1 WO 2015147901 A1 WO2015147901 A1 WO 2015147901A1 US 2014048079 W US2014048079 W US 2014048079W WO 2015147901 A1 WO2015147901 A1 WO 2015147901A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
neonate
heater
nutritional liquid
temperature
Prior art date
Application number
PCT/US2014/048079
Other languages
English (en)
Inventor
Dongchul D. Hyun
Michael T. Fleury
Original Assignee
Medela Holding Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US14/222,832 external-priority patent/US9931279B2/en
Application filed by Medela Holding Ag filed Critical Medela Holding Ag
Publication of WO2015147901A1 publication Critical patent/WO2015147901A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • A61J15/008—Sensor means, e.g. for sensing reflux, acidity or pressure
    • A61J15/0088—Sensor means, e.g. for sensing reflux, acidity or pressure for sensing parameters related to the device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J2200/00—General characteristics or adaptations
    • A61J2200/40—Heating or cooling means; Combinations thereof
    • A61J2200/42—Heating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J2200/00—General characteristics or adaptations
    • A61J2200/70—Device provided with specific sensor or indicating means
    • A61J2200/72—Device provided with specific sensor or indicating means for temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2240/00—Specially adapted for neonatal use

Definitions

  • the embodiments disclosed herein relate to a heater for warming nutritional liquid fed to a pre-term infant.
  • Nutritional delivery to a preterm infant or enteral feeding is an important part of caring for the preterm infant in neonate-natal intensive care units.
  • the preterm infant is fed with a feeding tube that delivers breast milk or neonatal formula directly into the stomach of the preterm infant.
  • the feeding tube is generally introduced either through the nose (i.e., nasally) or through the mouth (i.e., orally).
  • the breast milk or neonatal formula was fed to the neonate while the breast milk or neonate formula was at room temperature (i.e., below body temperature).
  • the nutritional liquid e.g., breast milk or neonatal formula
  • the body temperature of a person i.e., 98.6°F
  • the preterm infant When the nutritional liquid is provided to the preterm infant at a temperature closer to the body temperature of a person, the preterm infant was found to digest more of the nutritional liquid. Moreover, other studies have found that the lower the body temperature of the preterm infant, the higher the likelihood of mortality of the preterm infant. As such, it is important to preserve the preterm infant' s energy so that the preterm infant does not need to divert energy away from heating and growth to generate heat. If the nutritional liquid is fed to the preterm infant at room temperature, the preterm infant must divert energy that could be used for healing and growth to heat him or herself due to digestion of the cold nutritional liquid.
  • a preterm infant that might have stopped breathing would receive care before feeding of another preterm infant.
  • the medical professional i.e., nurse
  • a system for heating nutritional liquid to be fed to a preterm infant which can be quickly and efficiently set up has a heater with an internal cavity for receiving a cartridge portion of a tube through which the nutritional liquid flows during the feeding process.
  • the heater warms up the nutritional liquid flowing through the tube, and more particularly, the cartridge portion of the tube so that the preterm infant is fed warm nutritional fluid.
  • the warm nutritional fluid is delivered to the preterm infant at about a standard body temperature of a person (i.e. between about 95°F and about 99° F).
  • One end of the tube is connected to a container which stores the nutritional liquid during the feeding process.
  • the other end of the tube is disposed within the preterm infant's stomach or connected to a feeding tube which is disposed within the preterm infant' s stomach.
  • the nutritional liquid flows through the tube and into the preterm infant's stomach.
  • the heater warms up the nutritional fluid as it flows through the cartridge portion of the tube to about standard body temperature for the preterm infant.
  • the cartridge portion of the tube may have a preformed bent configuration so that the nutritional liquid may remain within the heater for a longer period of time so that the nutritional liquid can be more slowly heated, compared to a straight configuration.
  • the cartridge portion of the tube may be generally rigid (i.e., retain its bent shape) so that a medical professional need not fumble with the cartridge portion, especially when the medical professional inserts the cartridge portion into the internal cavity of the heater. This problem is accentuated when the internal cavity is defined by a groove having a particular shape such as a serpentine shape.
  • the cartridge portion of the tube may have a corresponding serpentine shape that is preformed and generally rigid so that the medical professional can quickly drop the serpentine shaped cartridge portion of the tube into the serpentine shaped groove defining the internal cavity. The medical professional need not route or slowly push and hold the tube into the serpentine shaped groove.
  • a sheet may be attached to one side of the cartridge portion of the tube.
  • the system may comprise a container, a tube and a heater.
  • the container is for the purposes of storing the neonate nutritional liquid during feeding.
  • the tube defines first and second ends. The first end of the tube may be connected to the container. The second end of the tube may be disposed within a stomach of the neonate or connected to a feeding tube for flowing the neonate nutritional liquid from the container to the neonate during feeding.
  • a cartridge portion of the tube may be preformed into a bent configuration.
  • the heater may have a heating unit and a heat sink.
  • the heat sink may define an internal cavity of the heater wherein the internal cavity is sized and configured to receive the bent cartridge portion of the tube for heating the neonate nutritional liquid as the neonate nutritional liquid flows from the container to the neonate during feeding through the heater.
  • the cartridge portion of the tube may have a zig zag configuration, Z shaped configuration, L shaped configuration, U shaped configuration or combinations thereof.
  • the zig zag configuration of the cartridge portion of the tube may be a serpentine configuration.
  • the system may further comprise a backing member with a first side of the cartridge portion of the tube attached to the backing member for rigidly fixing the bent configuration of the cartridge portion to facilitate insertion of the cartridge portion of the tube into the internal cavity of the heater.
  • the heater may further comprise a heat sink having a groove with a corresponding bent configuration compared to the bent cartridge portion of the tube so that the cartridge portion of the tube is easily insertable into the groove of the heat sink.
  • the cartridge portion of the tube may be disposed between the rigid backing and the heating unit so that the rigid backing aids in retaining heat within the cartridge portion.
  • the rigid backing may be fabricated from a polymeric sheet or an insulation material.
  • the system may further comprise a temperature sensor connected to the heating unit for sensing a temperature of the heating unit and sending a signal to a control module to cut off power to the heating unit when the temperature of the heating unit exceeds a preset upper limit.
  • the heater may have a heater base and a cover.
  • the cover may be traversed between a closed position and an opened position.
  • the system may further comprise a switch disposed adjacent to the cover so that in the closed position, the switch is depressed and operative to turn on a heater active signal, and in the opened position, the switch is released and operative to turn off the heater active signal.
  • the heater active signal may be a light.
  • a tube for use in a system for heating neonate nutritional liquid so that a temperature of the nutritional liquid approximates a standard body temperature of a person during feeding may comprise an elongate body having a central lumen.
  • the elongate body may define first and second ends.
  • the first end of the tube may be connected to a container with the neonate nutritional liquid therein.
  • the second end may be disposed within a stomach of the neonate or connected to a feeding tube for routing the neonate nutritional liquid from the container to the neonate during feeding.
  • a cartridge portion of the elongate body may be preformed into a bent configuration and disposed in an internal cavity of a heater.
  • a first side of a sheet may be attached to one side of the bent cartridge portion of the elongate body for rigidly fixing the bent configuration of the cartridge portion.
  • the cartridge portion of the tube may be recessed within a groove formed on a side of the sheet.
  • the tube may further comprise a temperature sensor attached to the elongate body downstream of the cartridge portion for reading a temperature of the neonate nutritional fluid after exiting the heater.
  • the elongate body may comprise first and second elongate bodies.
  • Each of the first and second elongate bodies may have a central lumen.
  • the tube may further comprise an inline temperature sensor.
  • the inline temperature sensor may comprise a body defining a flow path.
  • the first and second elongate bodies may be attached to the body in line with the flow path.
  • a thermocouple may be attached to the body for directly measuring a temperature of the nutritional liquid after the nutritional liquid exits a heater of the system.
  • a heating system for heating neonate nutritional liquid includes a heater and a control module.
  • the heater includes a heater base, a heating portion having a serpentine shaped groove for receiving a tube, and a heater cover rotatably connected to the heater base.
  • the heating portion is located within the heater base.
  • the control module includes a means for controlling the heater.
  • the heater may further include a microswitch positioned such that the microswitch is depressed when the heater cover is in a closed position abutting the heater base. In particular, the heater may only operate when the microswitch is depressed.
  • the heater may further include an operating indicator that may illuminate when the microswitch is depressed.
  • the heater may further include a thermocouple for monitoring the temperature of the heating portion.
  • the heater may also further include a thermal cutoff, to cease operation of the heater if it exceeds normal operating temperatures in case of a control module failure. For example, if the control module fails, the heater may continue to heat up, thereby potentially heating up the nutritional fluid excessively. The hot nutritional fluid may burn the preterm infant.
  • the thermal cutoff shuts off electrical power to the heater when the heater is too hot.
  • the control module may include a display capable of presenting information about the heater's operation.
  • the control module may be in electrical communication with the heater through a control cable, or the control module may be integrated directly into the heater.
  • the tube may be configured as a serpentine shaped feeding tube module.
  • the serpentine shaped feeding tube module includes a serpentine configured tube portion complementarily shaped to the pattern of the serpentine groove formed in the heater, and further includes a proximal connector on one end and a distal connector on the opposite end.
  • the proximal connector may be fluidly connectable to a nutritional liquid source and the distal connector may be fluidly connectable to a feeding tube positioned in fluid communication with a stomach of the neonate.
  • a heating system for heating neonate nutritional liquid wherein the system includes a heater and a control module.
  • the heater includes a heating portion having a serpentine shaped groove for receiving a feeding tube cassette.
  • the control module may be directly integrated into the heater.
  • a feeding tube cassette has a serpentine tube portion configured to match the pattern of the serpentine groove formed in the heater, which is located between a proximal connector and a distal connector.
  • a polymeric sheet is rigidly attached to and covers the serpentine tube portion.
  • the serpentine feeding tube cassette may further include a thermocouple located between the serpentine tube portion and the distal connector. The thermocouple may be configured to measure the temperature of the warmed nutritional liquid as it exits the cassette. The thermocouple may be in electric communication with the control module.
  • a system for providing warm nutritional liquid to a neonate includes a neonate nutritional liquid source, a feeding tube in fluid connection with the nutritional liquid source and a stomach of the neonate, and a heater mounted about the feeding tube.
  • the feeding tube includes a serpentine configured feeding tube portion positioned closer to the neonate than the nutritional liquid source, and the heater is mounted about this serpentine shaped feeding tube portion.
  • the serpentine feeding tube portion may be formed as a feeding tube module and the heater may include a heating portion having serpentine shaped groove located within a base of the heater for receiving the feeding tube module, and a heater cover.
  • the serpentine shaped feeding tube portion may be a serpentine feeding tube cassette having a thermocouple and a polymeric sheet rigidly attached to the serpentine shaped feeding tube portion.
  • the heater may include a heating portion having serpentine shaped groove for receiving the serpentine feeding tube cassette.
  • Figure 1 is an illustration of a first embodiment of the heating system
  • Figure 2 is a perspective view of the first embodiment of the heating system showing the heater opened with a serpentine shaped feeding tube module in place;
  • Figure 3 is a perspective view of Figure 8 with the serpentine shaped feeding tube module removed;
  • Figure 4 is an exploded perspective view of the heater shown in Figures 1-3;
  • Figure 5 is an illustration of a second embodiment of the heating system showing a feeding tube cassette in place
  • Figure 6 is a perspective view of Figure 11 with the feeding tube cassette removed;
  • Figure 7 is a top view of the heater shown in Figure 5;
  • Figure 8 is a side view of the feeding tube cassette
  • FIG. 9 is a cross-sectional view of the feeding tube cassette of Figure 8.
  • FIG. 10 is a cross-sectional view of a thermocouple of the feeding tube cassette.
  • FIG. 11 is a bottom view of the feeding tube cassette.
  • a tube 30, 120 runs from a storage container 20 containing nutritional liquid for a preterm infant to a feeding tube that is disposed within a stomach of the preterm infant.
  • the nutritional liquid is forced through the heater 22, 104 with a pump, gravity or other mechanism to warm-up the nutritional liquid flowing through the tube 30, 120 to a temperature above room temperature and preferably to about the body temperature of a person (i.e., between about 95°F and about 99°F).
  • the other end of the tube 30, 120 is connected to a feeding tube which is disposed within the preterm infant's stomach to deliver the nutritional liquid to the preterm infant directly into his/her stomach. Feeding warm nutritional liquid to the neonate facilitates digestion of the nutritional liquid and preserves the neonate's energy for healing and growing instead of diverting such energy to warming up cold nutritional liquid.
  • the tube 30, 120 may define a cartridge portion 28, 118 that is preformed to correspond to an internal cavity 74, 132 of the heater 22, 104.
  • the cartridge portion 28, 118 of the tube 30, 120 may have a serpentine configuration.
  • the internal cavity 74, 132 of the heater 22, 104 may also have a groove 34, 122 corresponding to the serpentine configuration of the cartridge portion 28, 118 of the tube 30, 120.
  • a sheet may be attached to one side of the serpentine configured cartridge portion 28, 118 of the tube 30, 120.
  • the system 20 includes a heater 22 and a control module 24. As shown in Figures 2 and 3, the system 20 also includes a feeding tube module 26 having a serpentine shaped feeding tube capable of being inserted into the heater 22.
  • a cartridge portion 28 of a tube 30 of the feeding tube module 26 may be disposed proximal to a heating portion 28 of the heater 22.
  • the heating portion 32 may feature a corresponding serpentine shaped groove 30, into which the cartridge portion 28 of the feeding tube module 26 is inserted.
  • Figures 2 and 3 show the cartridge portion 28 of the tube 30 as having two curve portions, thus creating a path with three straight portions within the heating portion 28, it is contemplated that this is just one example and various shapes and flow paths may be envisioned for use.
  • the benefit of using a serpentine shape for the cartridge portion 28 is that the nutritional liquid spends an extended period of time within the heating portion 32, in comparison to a straight path. By extending the period of time within the heating portion 32, the nutritional liquid may be heated using an overall lower temperature, thereby preventing heat degradation of the nutritional liquid from extreme temperatures, while also maintaining the ability of allowing the nutritional liquid to reach body temperature.
  • the use of the terms "serpentine” or “serpentine shaped” is intended to encompass configurations that extend the flow path of the feeding tube within the heating portion 32.
  • additional configurations that could be utilized are Z-shaped configurations, zigzag configurations, and other configurations (e.g., U shaped, L shaped) that extend the length of the flow path of the tube within the heating portion 32.
  • the cartridge portion 28 of the tube 30 of the feeding tube module 26 is formed to correspond in shape and design to the serpentine shaped groove 34 formed in the heating portion 32 of the heater 22, so that the cartridge portion 28 of the tube 30 of the feeding tube module 26 may be quickly and easily placed directly into, and registered within, the groove 34.
  • the cartridge portion 28 is formed in that it 28 retains its shape even though no external forces are imposed on the cartridge portion 28 of the tube 30.
  • the cartridge portion 28 is preformed into a particular bent shape such as a serpentine shape, L shape, U shape, zig zag shape.
  • the feeding tube module 26 has a proximal connector 36 on one end and a distal connector 38 on the opposite end.
  • the proximal connector 36 may be attachable to a source of nutritional liquid, while the distal connector 38 may be attachable to a feeding tube 40 placed within the patient (i.e., preterm infant).
  • the feeding tube module 26 may be formed of any suitable material or polymer that is both medical grade and that will retain the serpentine shape during use and under heat.
  • the heater 22 is electrically connected with the control module 24 via a control cable 42. Additionally, the heater 22 may include an operating indicator 44 or heater active signal which may be a light that illuminates when the heater cover 46 is closed and the heater 22 is operational. The operating indicator 44 may be enabled by the closing of a microswitch 48.
  • the microswitch 48 may be positioned within the heater 22 in such a fashion that it 48 is depressed by the closing of the heater cover 46, such that the operating indicator 44 will not illuminate and the heater heating portion 32 will not begin heating unless the heater cover 46 is in a fully closed position.
  • the switch 48 is not depressed and the operating indicator is not illuminated. This prevents raising the temperature of the heating portion 32 while the cover 46 is in an open position, thereby reducing the possibility of burn injuries by users of the heater 22 and allows users to visually confirm the heater 22 is operating by viewing the illuminated operating indicator 44.
  • the heater cover 46 may be rotatably attached to a heater case 50 by way of a cam mount 52.
  • the heater case 50 may cover the majority of internal components of the heater 22, and also features the serpentine shaped groove 34 into which the cartridge portion 28 of the tube 30 of the feeding tube module 104 is inserted during use.
  • the cam mount 52 may have a rotating portion so that the heater cover 46 may be lifted and lowered in relation to the heater case 50 during use.
  • the microswitch 48 may be disposed within the cam mount 52, so that when the heater cover 46 is lifted, operation of the heater 22 ceases as the cover 46 is no longer in contact with the microswitch 48.
  • the heater 22 may include an illumination source 54, for example a light emitting diode (LED), positioned below the operating indicator 54, such that when the heater cover 46 is closed and the heater 22 is operational, the illumination source 54 is illuminated to visually indicate the operation of the device.
  • the cam mount 52 may further include a cable connector 56, such that the control cable 42 connects to the control module 24 on one end and the heater 22 on the other end by way of the cam mount 52 and cable connector 56.
  • the heater 22 further includes a heater base 58 located in a lowermost position that contains the majority of the internal heater components.
  • the heater cover 46, heater case 50, and heater base 58 may be fabricated out of suitable polymer plastic material, but may be made of metal or other materials.
  • the heater base 58 may be a heater clamp 60 to which is attached a heating unit 62.
  • the heater 22 may further include a thermocouple 64 located proximally to the heating unit 62.
  • the heating unit 62 and thermocouple 64 may be in electrical communication with the control module 24, such that when the heater 22 is activated the heating unit 62 receives power and increases the temperature of the heating portion 32 and the thermocouple 64 monitors the temperature of the heating portion 32 and conveys that information to the control module 24.
  • the heater 22 may further include a thermal cutoff 66 in electrical communication with the heating unit 62.
  • the thermal cutoff 66 When the thermal cutoff 66 reaches a set temperature or a preset upper limit above normal operating conditions of the heater 22, the thermal cutoff 66 will trip, thereby eliminating the flow of power to the heating unit 62 and preventing an unsafe temperature during operation.
  • the thermal cutoff 66 blocks electricity to the heating unit when the measured temperature exceeds normal operating conditions.
  • the thermal cutoff may send a signal to the control module to shut off the heating unit. This is important to prevent burn injury to a preterm infant if the system malfunctions. While not shown in Figure 4, it is contemplated that the electrical components described herein are connected in electronic communication with each other as would be readily understood and achieved by a person of ordinary skill in the art.
  • the heating unit 62 may take a substantially flat configuration, there may be attached to it a heat sink 68 into which the feeding tube module 26 is actually inserted.
  • the heat sink 68 may be formed to include a complementary shaped serpentine groove pattern to readily accept and register the cartridge portion 28 of the tube 30 of the feeding tube module 26.
  • the heat sink 68 may be attached to the heating unit 62 by a polyimide tape 70.
  • the heat sink 68 may be surrounded by a heat sink O-ring 72, or other type of gasket, that seals any gap between the heat sink 68 and the heater case 50.
  • the serpentine shape of the groove 34 of the heat sink 68 fits and registers within an internal cavity 74 of the heater case 50 to allow for insertion of the cartridge portion 28 of the tube 30 of the feeding tube module 26. Additionally, to prevent heat loss between the serpentine portions of the heat sink 68, inserts 76 may be inserted into the open spaces of the heat sink 68. Further, a case O-ring 78, or other type of gasket, may be positioned between the heater base 58 and the heater case 50 to prevent heat escape from the heater 22 and to prevent the entry of liquids from potential spills on the heater 22.
  • FIG. 5 a second embodiment of the heating system 100 is shown.
  • the system 100 is substantially similar to that discussed above, with the exception that the control module 102 is integrated directly into the heater 104. This eliminates the need for a standalone control module 24, and allows for the input and monitoring of information to occur directly at the heater 104 by way of an integrated display 106, rather than on a separate control module 24 connected by an electronic cable 42.
  • a serpentine feeding tube cassette 108 may include an inline thermocouple 110 (inline temperature sensor) to directly monitor the temperature of the nutritional fluid as it exits the heater 104 of the system 100.
  • the inline thermocouple 110 may have a body 130 with a flow path 132 as show by the arrows and dash lines in Figure 11.
  • the body 130 receives an end of an elongate tube 120a and an end of elongate body 120b on which a distal connector 114 is connected to.
  • the elongate bodies 120a, b form the tube 120 which is connected to the feeding tube.
  • Each of the tubes 120a and b has a central lumen to allow the nutritional liquid to flow therethrough.
  • a thermocouple 134 directly senses the temperature of the nutritional fluid, and not the temperature of the exterior surface of the tube 120.
  • the cassette 108 may include a proximal connector 112 on the entry side of the cassette 108. As discussed, the distal connector 114 is connected at the opposite end of the cassette 108. The proximal connector 112 may be attachable to a source of nutritional liquid, while the distal connector 114 may be attachable to the feeding tube 116 placed within the patient. Adjacent to the proximal connector 112 is a cartridge portion 118 having a serpentine configuration, while adjacent to the distal connector 114 is the thermocouple 110.
  • the tube 120 of the cassette 108 may have a serpentine configuration which may be placed within the serpentine shaped groove 122 of the heater 60, and then the temperature of the nutritional liquid is monitored by the thermocouple 110 as it exits the cartridge portion 118 of the tube 120 of the cassette 204.
  • the thermocouple 110 may be in electrical communication with the control module 102 to monitor the temperature.
  • the tube 120 of the cartridge portion 118 of the cassette 108 may have a serpentine configuration but other configurations are also contemplated as discussed above.
  • the tube 120 of the cartridge portion 118 of the cassette 108 may more broadly have a bent configuration such as a zig zag configuration, L shaped configuration, U shaped configuration, Z shaped configuration and other configurations as well.
  • the tube 120 of the cartridge portion 118 may also be preformed into a particular shape such as a serpentine shape as discussed in relation to the serpentine configuration of the cartridge portion 28 of the tube 30.
  • the cartridge portion 118 of the tube 120 of the cassette 204 differs from the cartridge portion 28 of the serpentine feeding tube module 26, described above, in that it 118 further includes a polymeric sheet 124 which may act as a backing member attached to the upper portion of the cartridge portion 118 of the tube 120 of the cassette 108. This sheet 124 operates to serve multiple functions.
  • the sheet 124 maintains the serpentine configuration of the tube 120 at the cartridge portion 118 rigidly in place to aid in the insertion of the serpentine shaped tube 120 of the cartridge portion 118 of the cassette 108 into the heater serpentine groove 122.
  • the sheet 124 may be bendable but preferably is not stretchable so that the shape of the cartridge portion 118 is retained. Additionally, the sheet 124 aids in retaining heat within the cartridge portion 118 of the tube 120 by creating a physical barrier to prevent heat loss.
  • the sheet 124 may be fabricated from a material classified as an insulator. It is envisioned that both the feeding tube module 26 and the cassette 108 may be manufactured as disposable pieces, such that they are used for one feeding and then disposed of, rather than cleaned between uses of the heater.
  • the sheet 116 may be a molded sheet that fits the contours of the tube 118.
  • the bottom surface of the sheet 116 may fit the contour of the upper surface of the tube 118.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne un système de chauffage pour chauffer un liquide nutritionnel néonatal, comprenant un élément chauffant et un module de commande. L'élément chauffant comprend une partie chauffante ayant une rainure en forme de serpentin pour recevoir un tube. Le tube peut être un module de tube d'alimentation en serpentin ayant un partie de tube en serpentin, ou une cassette de tube d'alimentation en serpentin ayant une partie tube en serpentin recouverte par une feuille polymère fixée de façon rigide. La cassette de tube d'alimentation en serpentin peut comprendre un thermocouple en ligne pour mesurer la température du liquide nutritionnel chauffé au fur et à mesure qu'il sort de la cassette.
PCT/US2014/048079 2014-03-24 2014-07-24 Élément chauffant de tubulure de fluide néonatal WO2015147901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/222,832 2014-03-24
US14/222,832 US9931279B2 (en) 2011-04-22 2014-03-24 Neonatal fluid tubing heater

Publications (1)

Publication Number Publication Date
WO2015147901A1 true WO2015147901A1 (fr) 2015-10-01

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Cited By (3)

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CN105662893A (zh) * 2016-03-08 2016-06-15 金柯楠 一种肠内营养液恒温加热器
CN111388778A (zh) * 2020-03-18 2020-07-10 贺保平 一种腹膜透析机与患者之间管路的连接及控制方法
WO2022144631A1 (fr) * 2020-12-30 2022-07-07 Medela Holding Ag Tube d'alimentation entérale à configuration polygonale

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CN201139844Y (zh) * 2008-01-24 2008-10-29 李景春 加热式输液护理器
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US20120271271A1 (en) * 2011-04-22 2012-10-25 Hyun Dongchul D Neonatal fluid tubing heater

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US20080262409A1 (en) * 2007-04-23 2008-10-23 Joel Brian Derrico High flow rate disposable cassette heat exchanger
CN201139844Y (zh) * 2008-01-24 2008-10-29 李景春 加热式输液护理器
CN201814947U (zh) * 2010-09-02 2011-05-04 任虹 用于医用输液管的液体加热盒
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CN105662893A (zh) * 2016-03-08 2016-06-15 金柯楠 一种肠内营养液恒温加热器
CN111388778A (zh) * 2020-03-18 2020-07-10 贺保平 一种腹膜透析机与患者之间管路的连接及控制方法
WO2022144631A1 (fr) * 2020-12-30 2022-07-07 Medela Holding Ag Tube d'alimentation entérale à configuration polygonale

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