New! View global litigation for patent families

US3614385A - Blood-heating apparatus - Google Patents

Blood-heating apparatus Download PDF

Info

Publication number
US3614385A
US3614385A US3614385DA US3614385A US 3614385 A US3614385 A US 3614385A US 3614385D A US3614385D A US 3614385DA US 3614385 A US3614385 A US 3614385A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
blood
heating
temperature
apparatus
convection
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
Inventor
Bevan Graham Horstmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEVAN GRAHAM HORSTMANN
Original Assignee
BEVAN GRAHAM HORSTMANN
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
Grant date

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H1/00Water heaters having heat generating means, e.g. boiler, flow- heater, water-storage heater
    • F24H1/10Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/16Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
    • F24H1/162Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled using electrical energy supply
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/44Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/36General characteristics of the apparatus related to heating or cooling
    • A61M2205/366General characteristics of the apparatus related to heating or cooling by liquid heat exchangers

Abstract

Apparatus for heating blood required for transfusion purposes which enables blood newly drawn from the cold store to be used immediately and without waste. A water tank is provided with a submerged broad based chimneylike convection device having a removable blood-heating coil wound round its outside. An electric heater below the convection device causes heated water to rise up the center and fall around the blood-heating coil. A thermostatic control ensures that the blood is heated to the correct temperature and indicating and other safety devices ensure correct functioning and immediate indication of any failure.

Description

United States Patent Bevan Graham Horstmann Newbridge Works, Bath, Somerset, England [21] Appl. No. 851,362

[22] Filed Aug. 19, 1969 [45] Patented Oct. 19, 1971 [72] Inventor [S4] BLOOD-HEATING APPARATUS 2 Claims, 3 Drawing Figs.

[52] US. Cl 219/303, 128/214,128/400,165/104, 219/302, 219/326, 222/146 HE [51] Int. Cl H051) l/00, A61m 5/00, B67d 5/62 [50] Field of Search ..219/296-309,

326, 325, 314, 331;222/146,146 HE, 146 H, 146 R; 239/135; 165/104, 106, 107, 46; 128/214, 399-401 [56] References Cited UNITED STATES PATENTS 1,110,919 9/1914 Gamble 219/326 1,904,020 4 1933 Wappler..... 219 303 x 2,087,586 7 1937 Tishman 219 331 x 2,576,558 11/1951 Bede 219/305 X 3,057,603 10/1962 1sree1i.. 219/326 UX 3,072,259 1/1963 lsreeli 219/331 UX 3,370,153 2/1968 Du Fresne et a1. 219/326 X 3,475,590 10/1969 Pins 219/325 X FOREIGN PATENTS 204,046 10/1956 Australia 219/302 247,090 9/1963 Australia... 222/146 125,997 9/1949 Sweden 219/314 Primary Examiner-A. Bartis Attorneys-Emory L. Groff and Emory L. Groff, Jr.

ABSTRACT: Apparatus for heating blood required for transfusion purposes which enables blood newly drawn from the cold store to be used immediately and without waste. A water tank is provided with a submerged broad based chimneylike convection device having a removable blood-heating coil wound round its outside. An electric heater below the convection device causes heated water to rise up the center and fall around the blood-heating coil. A thermostatic control ensures that the blood is heated to the correct temperature and indicating and other safety devices ensure correct functioning and immediate indication of any failure.

PATENTEBnm 19 I971 SHEET 10F 3 W m M a H w M no U U OH \HO \H H J OH H i U W j/ mm a n flm J PATENTEDBETIQIBYI swarms 3,614,385

NEUTRAL BLOOD-HEATING APPARATUS This invention relates to apparatus for heating blood required for transfusion purposes and the principal object of the invention is to provide apparatus which may be brought into use very quickly, is completely automatic in use, and has a high factor of reliability.

Blood required for transfusion is generally stored in bottles and is kept at a temperature of 4 C. Immediately prior to use the blood must be heated to approximately 36 C. (96.8 F.), and having once been heated it must be discarded if not used, as it cannot be cooled again and stored for subsequent use. At present, when blood is required, it is necessary to withdraw it from the cold store and, in view of the time required for heating, to ensure that a sufficient quantity is heated in advance. Where a major operation, which may require a substantial amount of blood, is involved the amount of blood heated may exceed the amount actually used, and this results in waste.

The apparatus according to the invention provides for the blood to be heated continuously immediately before being supplied to the patient, the containers remaining in cold storage until the blood is actually required for use. The apparatus delivers the blood to the patient at a constant and automatically controlled temperature, thereby eliminating the risk of the patient receiving underheated or overheated blood as the result of human error. A further important feature of the invention is that it minimizes the time required to prepare for a transfusion, which may be a very important factor in emergency treatment.

The: invention consists of apparatus for heating blood required for transfusion purposes comprising a tank to contain a quantity of water, an electric heating unit disposed substantiallycentrally in the lower part of the tank, a convection guide placed above the electric heater in the tank, the convection'guide comprising a broad conical lower portion and a chimneylike upper portion, means for removably attaching a blood coil to the outer surface of the chimney portion of the convector guide, and an automatic temperature control in the tank arranged to control the heating unit.

Conveniently a second automatic temperature control is provided, set to a temperature slightly above that of the said temperature control, to operate in case the normal temperature control fails.

Indicator lamps may also be provided to show whether each part of the apparatus is functioning as it is intended to function.

The tank may be built in a unit with an electrical control box containing all the control and indicating equipment, and a drip stand clamp may be provided to enable the apparatus to be clamped on to a standard drip stand normally used for blood transfusions.

A preferred embodiment of the invention will be described with reference to the accompanying drawings in which FIG. 1 is a sectional elevation of a blood'heating apparatus according to the invention;

F IG. 2 is a plan view of the apparatus of FIG. 1; and

FIG. 3 is a circuit diagram showing how the heating is controlled.

Referring first to FIGS. 1 and 2, the apparatus comprises an outer tank 11. This could be in the form of a casting or might be made from sheet metal but it is preferred to make it of a strong material having comparatively poor heat conduction properties, such as fiberglass. The use of this material is also beneficial in keeping the weight to a minimum. The tank II may be circular when viewed in plan but it is preferably provided with a flat side 12 in order that a control unit, generally indicated at 13, may be attached. Located centrally in the bottom part of the tank is an electric heater 14 which may convenien tly be of the kind commonly used in electric kettles, and this is secured to the fiat side 12 by the usual mounting consisting of aflange l5, sealing washer 16, fiat washer 17 and nut 18. Mounted above the heater 14 is a convection guide, generally indicated at 19, consisting of a lower wide conical portion 20 and an upper chimneylike portion 21, the portion 21 preferably being also slightly conical. The parts are so dimensioned that the upper end 22 of the convection guide 19 is well below the level of the top of the tank so that when the tank is filled with water there is a good depth of water above the top of the convection guide. The convection guide may stand on legs 23 so that it is readily removable. It is preferably made of a light, strong thermally nonconductive material, such as fiberglass.

A blood coil 24 is made of flexible tubing and is carried on the chimney portion 21 of the convector guide. It may be wound on a small frame which is slippedover the outer conical diameter of the chimney portion, or it may be wound directly on the chimney portion, or it may be merely clipped thereto. A certain amount of variety is possible in the mode of attachment. It is, however, desirable that the convolutions of the blood coil be evenly spaced in the longitudinal direction and preferable that they stand clear for a small distance from the chimney portion 21 to allow free circulation of water.

Attached to the flat wall 12 of the tank 11 is a casing forming an electrical control box, generally indicated at 25, which is provided with a cover 26 and a sealing washer 27 so that it may be hermetically sealed to prevent the ingress of explosive vapors which may be met with in an operating theater. This avoids the possibility of an explosion which might be caused by an electric spark in the casing 25 resulting from the operation of the electrical control gear.

Two thermostats, respectively 28 and'29, attacked to the wall 12 project into the tank 11.

A drip stand clamp, generally indicated at 30, comprises a base portion 31 a clamp member 32 and two eyebolts, respectively 33 and 34, which can be swung into slots in the clamp member 32 and secured by means of knurled nuts, respectively 35 and 36. This enables the blood-heating apparatus to be attached to the standard drip stand. The drip stand clamp is attached to a bracket 37 which is fixed to the bottom of the tank I] by two studs 38. The studs 38, with a third stud 39, also form feet for the apparatus. The bracket 38 is provided with a central pad 40 to support the bottom of the tank.

FIG. 3 shows the circuitry of the control equipment in the control box 25. A flexible cable-containing line, neutral and earth conductors is brought into the control box 25 through a conventional gland and connected to a connecting block indicated in dotted lines at 41. A neon lamp 42 is connected between the line terminal and the earth terminal to indicate, when illuminated, that the earth continuity is in order. A further neon lamp 43 connected between the line and neutral lines indicates that the line and neutral circuit is in order. Leads from the line and neutral terminals pass to a doublepole switch 44. A lead from the live pole of switch 44 passes to a fuse 45 having a neon lamp 46 in series with a resistor 47 connected across it, so that if the fuse 45 should blow the neon lamp 46 will light up. From the fuse 45 a live wire leads to one side of a normal" thermostat 48 having its casing connected to earth by a lead 49. A capacitor 50, conveniently of 0.1 f. capacitance, is provided to quench any.sparks which may occur when the contacts of the thermostat 48 open. A lead 51 from the other side of the thermostat 48 passes to a terminal 52 of the connecting block and from terminal 52 a further lead 53 passes to one side of a high" thermostat 54. This high thermostat is similar to the thermostat 48 having its casing earthed and a capacitor 55 connected in parallel with its contacts. From the other side of the thermostat 54 a lead 56 passes to one terminal of the heating element 57 the other terminal of which is connected through a fuse 58 and the neutral pole of switch 44 to the neutral terminal of the terminal block. A neon lamp 59, in series with a resistor 60, is connected across the fuse 58 and this will light up if the fuse blows. The heater 57 has its casing connected to earth by a line 61 and a neon lamp 62 in series with a resistor 63 is connected across the terminals of the heater 57. A further neon lamp 64 is connected between the terminal 52 and the neutral line and still another neon lamp 65 is connected in parallel with the contacts of the high" thermostat 54.

The apparatus is intended to supply blood to a patient at a temperature of 36 C. (96.8 F.). When the apparatus is to be placed in operation the blood coil 24 is mounted on the chimney portion of the convection unit and the convection unit and blood coil assembly is lowered into the water tank, which is filled to a point very near its top so that the blood coil and convection unit are completely submerged. The outlet from the upper end of the drip coil is connected to an extension tube carrying the vein needle through which the blood is supplied to the patient and the lower end of the blood tube 24 is connected to the container which contains the cold blood which has been brought from the cold store. The heater is switched on by closing the main switch 44. Before this switch is closed the two neon lamps 42 and 43 are alight to show that power is available and the neutral and earth continuity lines are in order. Since the water is initially cold the thermostats 48 and 54 are both closed, and because the thermostat 48 is closed the neon lamp 64 is alight to indicate that heating is proceeding. Neon lamps 46, 59, 62 and 65 are not illuminated and only come into operation if something is wrong.

Heating proceeds until the temperature within the tank reaches 38 C. (l00.4 F.) at which point the thermostat 48 is set to cut out. As soon as the neon lamp goes out it is known that a supply of hot water is available and the blood in the blood coil 24 will have been raised to the desired temperature of 36 C. (96.8 F.) or slightly above that temperature. Transfusion may therefore commence as soon as cold blood still in the extension tube and the vein needle has been allowed to run away. Thereafter blood flowing through the blood tube will be heated to the required temperature. As soon as the water temperature in the tank drops to 37 C. (98.6 F.) the thermostat 48 cuts in again and the further heating is indicated by the neon lamp 64.

If for some reason the normal" thermostat 48 should fail to operate to cut off the heating when the desired temperature is reached the temperature will continue to rise until it reaches 40 C. (l04.0 F.), at which level the high" thermostat 54 operates to cut off the supply. Opening of the contacts of thermostat 54 places the supply voltage across the neon lamp 65,

which immediately lights up to indicate that a fault has developed.

If for any reason the heater 57 should fail it will cease to take current and the supply voltage will accordingly be placed on the neon lamp 62 and its series resistor so that the neon lamp 62 will light up to indicate a heater failure.

In the foregoing specification, certain specific temperatures have been mentioned but it is known that the temperature of the blood at the point of entry to the patient does not necessarily have to be what is frequently considered as blood heat (37 C. 98.6 F.), but may lie anywhere within the range 36 C. 39 C. inclusive. The factors governing the blood temperature may be, for example, ambient temperature, the condition of the patient, and the type of operation being carried out.

It will therefore be apparent that the temperatures stated in this specification are exemplary, and simple adjustment of the automatic temperature control will quickly permit the abovementioned range of temperatures to be achieved.

1 claim:

1. Blood-heating apparatus, comprising a vessel to contain a heating liquid to a predeterminable minimum level, a coil of tube extending in the vessel between an inlet from the exterior of the vessel and an outlet to the exterior of the vessel, an electric heater in the vessel, and a thermostat in the vessel to control the electric heater and thereby the temperature of heating liquid contained by the .vessel, wherein the electric heater is lowermost in the vessel, a tubular convection guide is positioned in the vessel above the heater, the tubular convection guide consists of a chimney open at its upper end below said predeterminable minimum level and having an outwardly and downwardly flared lower end, the periphery of said lower end being the upper boundary of a lower entry to the tubular convection guide, the coil of tube is coaxial with and outside the chimney above the lower end of f the convection guide, and the outwardly, downwardly flared lower end of the convection guide extends radially beyond the coil and the electric heater.

2. Blood-heating apparatus as claimed in claim 1 wherein the convection guide is formed of thermally nonconductive material.

Claims (1)

  1. 2. Blood-heating apparatus as claimed in claim 1 wherein the convection guide is formed of thermally nonconductive material.
US3614385A 1968-07-03 1969-08-19 Blood-heating apparatus Expired - Lifetime US3614385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3168368A GB1212571A (en) 1968-07-03 1968-07-03 Blood heating unit

Publications (1)

Publication Number Publication Date
US3614385A true US3614385A (en) 1971-10-19

Family

ID=10326843

Family Applications (1)

Application Number Title Priority Date Filing Date
US3614385A Expired - Lifetime US3614385A (en) 1968-07-03 1969-08-19 Blood-heating apparatus

Country Status (3)

Country Link
US (1) US3614385A (en)
DE (1) DE1942162A1 (en)
GB (1) GB1212571A (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835294A (en) * 1973-04-06 1974-09-10 Binks Mfg Co High pressure electric fluid heater
US4167663A (en) * 1977-01-24 1979-09-11 Baxter Travenol Laboratories, Inc. Blood warming apparatus
US4532414A (en) * 1980-05-12 1985-07-30 Data Chem., Inc. Controlled temperature blood warming apparatus
US4678460A (en) * 1985-02-11 1987-07-07 Rosner Mark S Portable rapid massive parenteral fluid warming and infusion apparatus
WO1987004887A1 (en) * 1986-02-07 1987-08-13 National Patent Dental Products, Inc. Heater device
US4705508A (en) * 1985-09-30 1987-11-10 Regents Of The University Of Minnesota Apparatus and method for rapid infusion of circulatory supportive fluids
US4707587A (en) * 1986-01-27 1987-11-17 Greenblatt Gordon M Blood warming method and apparatus using gaseous heat exchange medium
US4709135A (en) * 1984-09-21 1987-11-24 Stihler Medizintechnik Gmbh Device to heat infusion and transfusion solutions
US5245693A (en) * 1991-03-15 1993-09-14 In-Touch Products Co. Parenteral fluid warmer apparatus and disposable cassette utilizing thin, flexible heat-exchange membrane
US5381510A (en) * 1991-03-15 1995-01-10 In-Touch Products Co. In-line fluid heating apparatus with gradation of heat energy from inlet to outlet
US5388178A (en) * 1991-10-19 1995-02-07 Samsung Electronics Co., Ltd. Safety control system of a boiling clothes washing machine
US5449884A (en) * 1992-07-09 1995-09-12 Samsung Electronics Co., Ltd. Overheating prevention apparatus of a boiling clothes washing machine and method thereof
US5846224A (en) * 1996-10-01 1998-12-08 Baxter International Inc. Container for use with blood warming apparatus
US6047108A (en) * 1996-10-01 2000-04-04 Baxter International Inc. Blood warming apparatus
US6175688B1 (en) 1998-07-10 2001-01-16 Belmont Instrument Corporation Wearable intravenous fluid heater
US6467953B1 (en) 1999-03-30 2002-10-22 Medical Solutions, Inc. Method and apparatus for monitoring temperature of intravenously delivered fluids and other medical items
US6824528B1 (en) 1997-03-03 2004-11-30 Medical Solutions, Inc. Method and apparatus for pressure infusion and temperature control of infused liquids
US7041941B2 (en) 1997-04-07 2006-05-09 Patented Medical Solutions, Llc Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements
US7090658B2 (en) 1997-03-03 2006-08-15 Medical Solutions, Inc. Temperature sensing device for selectively measuring temperature at desired locations along an intravenous fluid line
US7276675B2 (en) 1997-04-07 2007-10-02 Patented Medical Solutions, Llc Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements
US7611504B1 (en) 2004-03-09 2009-11-03 Patented Medical Solutions Llc Method and apparatus for facilitating injection of medication into an intravenous fluid line while maintaining sterility of infused fluids
US7740611B2 (en) 2005-10-27 2010-06-22 Patented Medical Solutions, Llc Method and apparatus to indicate prior use of a medical item
CN101886845A (en) * 2010-06-25 2010-11-17 天津职业技术师范大学 Blood and liquor heating device
WO2011156565A1 (en) * 2010-06-10 2011-12-15 North American Rescue, Llc Intravenous fluid heater
US8226605B2 (en) 2001-12-17 2012-07-24 Medical Solutions, Inc. Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion
US8226293B2 (en) 2007-02-22 2012-07-24 Medical Solutions, Inc. Method and apparatus for measurement and control of temperature for infused liquids
US9119912B2 (en) 2001-03-12 2015-09-01 Medical Solutions, Inc. Method and apparatus for controlling pressurized infusion and temperature of infused liquids
US9211381B2 (en) 2012-01-20 2015-12-15 Medical Solutions, Inc. Method and apparatus for controlling temperature of medical liquids
US20160178235A1 (en) * 2014-12-22 2016-06-23 Horiba Stec, Co., Ltd. Fluid heater
US9656029B2 (en) 2013-02-15 2017-05-23 Medical Solutions, Inc. Plural medical item warming system and method for warming a plurality of medical items to desired temperatures
US9737672B2 (en) 2007-08-07 2017-08-22 Belmont Instrument Corporation Hyperthermia, system, method, and components

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1110919A (en) * 1913-02-20 1914-09-15 Hugh A Gamble Electric heater.
US1904020A (en) * 1929-10-26 1933-04-18 Reinhold H Wappler Temperature controlling apparatus
US2087586A (en) * 1935-02-28 1937-07-20 Tishman Paul Heater for hypodermic solutions and the like
US2576558A (en) * 1948-11-24 1951-11-27 James A Bede Paint heater
US3057603A (en) * 1958-03-11 1962-10-09 Technicon Instr Glass tube coil assemblies and heating baths
US3072259A (en) * 1958-04-21 1963-01-08 Technicon Instr Dialysis apparatus
US3370153A (en) * 1964-03-06 1968-02-20 Dupaco Inc Electric heating apparatus for warming a parenteral fluid
US3475590A (en) * 1966-10-25 1969-10-28 Thermolyne Corp Thermostatically controlled electrically heated clinical blood warmer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1110919A (en) * 1913-02-20 1914-09-15 Hugh A Gamble Electric heater.
US1904020A (en) * 1929-10-26 1933-04-18 Reinhold H Wappler Temperature controlling apparatus
US2087586A (en) * 1935-02-28 1937-07-20 Tishman Paul Heater for hypodermic solutions and the like
US2576558A (en) * 1948-11-24 1951-11-27 James A Bede Paint heater
US3057603A (en) * 1958-03-11 1962-10-09 Technicon Instr Glass tube coil assemblies and heating baths
US3072259A (en) * 1958-04-21 1963-01-08 Technicon Instr Dialysis apparatus
US3370153A (en) * 1964-03-06 1968-02-20 Dupaco Inc Electric heating apparatus for warming a parenteral fluid
US3475590A (en) * 1966-10-25 1969-10-28 Thermolyne Corp Thermostatically controlled electrically heated clinical blood warmer

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835294A (en) * 1973-04-06 1974-09-10 Binks Mfg Co High pressure electric fluid heater
US4167663A (en) * 1977-01-24 1979-09-11 Baxter Travenol Laboratories, Inc. Blood warming apparatus
US4532414A (en) * 1980-05-12 1985-07-30 Data Chem., Inc. Controlled temperature blood warming apparatus
US4709135A (en) * 1984-09-21 1987-11-24 Stihler Medizintechnik Gmbh Device to heat infusion and transfusion solutions
US4678460A (en) * 1985-02-11 1987-07-07 Rosner Mark S Portable rapid massive parenteral fluid warming and infusion apparatus
US4705508A (en) * 1985-09-30 1987-11-10 Regents Of The University Of Minnesota Apparatus and method for rapid infusion of circulatory supportive fluids
US4707587A (en) * 1986-01-27 1987-11-17 Greenblatt Gordon M Blood warming method and apparatus using gaseous heat exchange medium
WO1987004887A1 (en) * 1986-02-07 1987-08-13 National Patent Dental Products, Inc. Heater device
US5245693A (en) * 1991-03-15 1993-09-14 In-Touch Products Co. Parenteral fluid warmer apparatus and disposable cassette utilizing thin, flexible heat-exchange membrane
US5381510A (en) * 1991-03-15 1995-01-10 In-Touch Products Co. In-line fluid heating apparatus with gradation of heat energy from inlet to outlet
US5388178A (en) * 1991-10-19 1995-02-07 Samsung Electronics Co., Ltd. Safety control system of a boiling clothes washing machine
US5394582A (en) * 1991-10-19 1995-03-07 Samsung Electronics Co., Ltd. Safety control system of a boiling clothes washing machine
US5449884A (en) * 1992-07-09 1995-09-12 Samsung Electronics Co., Ltd. Overheating prevention apparatus of a boiling clothes washing machine and method thereof
US5846224A (en) * 1996-10-01 1998-12-08 Baxter International Inc. Container for use with blood warming apparatus
US6047108A (en) * 1996-10-01 2000-04-04 Baxter International Inc. Blood warming apparatus
US7942851B2 (en) 1997-03-03 2011-05-17 Medical Solutions, Inc. Method and apparatus for pressure infusion and temperature control of infused liquids
US7090658B2 (en) 1997-03-03 2006-08-15 Medical Solutions, Inc. Temperature sensing device for selectively measuring temperature at desired locations along an intravenous fluid line
US8920387B2 (en) 1997-03-03 2014-12-30 Medical Solutions, Inc. Method and apparatus for pressure infusion and temperature control of infused liquids
US6824528B1 (en) 1997-03-03 2004-11-30 Medical Solutions, Inc. Method and apparatus for pressure infusion and temperature control of infused liquids
US8313462B2 (en) 1997-03-03 2012-11-20 Medical Solutions, Inc. Method and apparatus for pressure infusion and temperature control of infused liquids
US7540864B2 (en) 1997-03-03 2009-06-02 Medical Solutions, Inc. Temperature sensing device for selectively measuring temperature at desired locations along an intravenous fluid line
US7276675B2 (en) 1997-04-07 2007-10-02 Patented Medical Solutions, Llc Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements
US7041941B2 (en) 1997-04-07 2006-05-09 Patented Medical Solutions, Llc Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements
US7307245B2 (en) 1997-04-07 2007-12-11 Patented Medical Solutions, Llc Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements
US7417205B2 (en) 1997-04-07 2008-08-26 Patented Medical Solutions, Llc Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements
US6236809B1 (en) 1998-07-10 2001-05-22 Belmont Instrument Corporation Wearable intravenous fluid heater
US6175688B1 (en) 1998-07-10 2001-01-16 Belmont Instrument Corporation Wearable intravenous fluid heater
US6480257B2 (en) 1998-07-10 2002-11-12 Belmont Instrument Corporation Heat exchanger useable in wearable fluid heater
US8821011B2 (en) 1999-03-30 2014-09-02 Medical Solutions, Inc. Method and apparatus for monitoring temperature of intravenously delivered fluids and other medical items
US6566631B2 (en) 1999-03-30 2003-05-20 Medical Solutions, Inc. Method and apparatus for monitoring temperature of intravenously delivered fluids and other medical items
US6722782B2 (en) 1999-03-30 2004-04-20 Medical Solutions, Inc. Method and apparatus for monitoring temperature of intravenously delivered fluids and other medical items
US6467953B1 (en) 1999-03-30 2002-10-22 Medical Solutions, Inc. Method and apparatus for monitoring temperature of intravenously delivered fluids and other medical items
US9119912B2 (en) 2001-03-12 2015-09-01 Medical Solutions, Inc. Method and apparatus for controlling pressurized infusion and temperature of infused liquids
US8226605B2 (en) 2001-12-17 2012-07-24 Medical Solutions, Inc. Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion
US8920372B2 (en) 2001-12-17 2014-12-30 Medical Solutions, Inc. Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion
US9492624B2 (en) 2001-12-17 2016-11-15 Medical Solutions, Inc. Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion
US8845586B2 (en) 2004-03-09 2014-09-30 Patented Medical Solutions Llc Method and apparatus for facilitating injection of medication into an intravenous fluid line while maintaining sterility of infused fluids
US7611504B1 (en) 2004-03-09 2009-11-03 Patented Medical Solutions Llc Method and apparatus for facilitating injection of medication into an intravenous fluid line while maintaining sterility of infused fluids
US8636691B2 (en) 2005-10-27 2014-01-28 Patented Medical Solutions, Llc Method and apparatus to indicate prior use of a medical item
US7740611B2 (en) 2005-10-27 2010-06-22 Patented Medical Solutions, Llc Method and apparatus to indicate prior use of a medical item
US8444599B2 (en) 2005-10-27 2013-05-21 Patented Medical Solutions, Llc Method and apparatus to indicate prior use of a medical item
US8226293B2 (en) 2007-02-22 2012-07-24 Medical Solutions, Inc. Method and apparatus for measurement and control of temperature for infused liquids
US9737672B2 (en) 2007-08-07 2017-08-22 Belmont Instrument Corporation Hyperthermia, system, method, and components
WO2011156565A1 (en) * 2010-06-10 2011-12-15 North American Rescue, Llc Intravenous fluid heater
CN101886845A (en) * 2010-06-25 2010-11-17 天津职业技术师范大学 Blood and liquor heating device
US9211381B2 (en) 2012-01-20 2015-12-15 Medical Solutions, Inc. Method and apparatus for controlling temperature of medical liquids
US9764100B2 (en) 2012-01-20 2017-09-19 Medical Solutions, Inc. Method and apparatus for controlling temperature of medical liquids
US9656029B2 (en) 2013-02-15 2017-05-23 Medical Solutions, Inc. Plural medical item warming system and method for warming a plurality of medical items to desired temperatures
US20160178235A1 (en) * 2014-12-22 2016-06-23 Horiba Stec, Co., Ltd. Fluid heater

Also Published As

Publication number Publication date Type
DE1942162A1 (en) 1971-03-11 application
GB1212571A (en) 1970-11-18 application

Similar Documents

Publication Publication Date Title
US3564199A (en) Self-regulating electric fluid-sump heater
US3370153A (en) Electric heating apparatus for warming a parenteral fluid
US3629552A (en) Heating device for parenteral fluid
US3475590A (en) Thermostatically controlled electrically heated clinical blood warmer
US3436525A (en) Electrically heated dish-dispensing apparatus
US3375774A (en) Fully automatic electric coffee pot
US3131335A (en) Liquid level controller
US2370609A (en) Concentration cell and temperature compensator
US4460944A (en) Heat sensitive pool light
US3423571A (en) Insulated electrically heated bottle
US5402517A (en) Apparatus for emitting a volatile chemical agent by heating and means for adjusting a spacing between a heater and the chemical agent to regulate the rate of vaporization
US3339578A (en) Level sensing means for electrically conductive materials
US4734560A (en) Vaporizing unit
US2888546A (en) Immersion electric heater
US6028521A (en) Liquid level sensor
US2880300A (en) Electrically-heated steam generators
US4068116A (en) Thermostatically protected electric immersion water heater
US3443060A (en) Thermostatically controlled electric blood heating apparatus
US3894213A (en) Fluid circulating heating pad
US4531046A (en) Beverage brewing apparatus with constant temperature water reservoir
US6336003B1 (en) Max one I.V. warmer
US3038058A (en) Food warming dish
US4255646A (en) Electric liquefied petroleum gas vaporizer
US3898428A (en) Electric in line water heating apparatus
US3338233A (en) Incubator temperature control system and method of operation