EP1788319A1 - Système de chauffage pour substances fluides - Google Patents
Système de chauffage pour substances fluides Download PDFInfo
- Publication number
- EP1788319A1 EP1788319A1 EP05425819A EP05425819A EP1788319A1 EP 1788319 A1 EP1788319 A1 EP 1788319A1 EP 05425819 A EP05425819 A EP 05425819A EP 05425819 A EP05425819 A EP 05425819A EP 1788319 A1 EP1788319 A1 EP 1788319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- heating system
- sheath
- electrically
- flowing
- 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.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters 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
- F24H1/121—Continuous-flow heaters, i.e. heaters 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 using electric energy supply
Definitions
- the present invention refers to a heating system for flowing sybstances, in a liquid or gaseous state, particularly for medical/sanitary use.
- blood, plasma and products derived therefrom are generally refrigerated at about 1-6 °C. Consequently, the infusion of such fluids in a patient at a lower temperature than the body one could create serious problems, such as ipothermy or hearth disorders.
- physiologically cold flowing substances Another problem which the use of physiologically cold flowing substances has is the one occurring when such substances are rinsing liquids necessary in surgical interventions, for example in endoscopy interventions. Under such situations, in fact, the seepage of a physiologically cold rinsing liquid (in this case at a temperature which is substantially equal to the ambient one, which, in a surgical room, is around 20°C) inside the intervention cavity would generate its condensation, particularly on lenses of the visor used by medical personnel, consequently preventing the intervention from going on correctly, unless probes are afterwards extracted and lenses are cleaned.
- a physiologically cold rinsing liquid in this case at a temperature which is substantially equal to the ambient one, which, in a surgical room, is around 20°C
- the prior art proposes different solutions which allow heating, more or less efficiently, the flowing substances before they are infused into a patient.
- the prior art further does not propose a heating system which can be easily wound around a bag for containing the substance when this latter one is placed in order to be able to proceed with its infusion into the patient.
- object of the present invention is solving the above prior art problems, providing a heating system for flowing substances, in a liquid or gaseous state, particularly for medical/sanitary use, comprising at least one heating sheath which guarantees heating of the substances along at least one part of a distribution duct to the patient, thereby allowing to arrange the means for supplying the substances itself, such as for example pumps, tanks or bags, also at a remote distance from the patient without impairing its heating.
- another object of the present invention is providing a heating system comprising at least one heating sheath which allows a progressive heating of a substance flowing inside a distribution duct to the patient.
- a further object of the present invention is providing a heating system comprising a heating bag for bags or ampullas containing a flowing substance during infusion from a patient realised with the heating sheath.
- such flowing substances can be those used in the medical and sanitary field, adapted to be infused in a patient, such as, for example, blood, plasma, physiologic substances, venous and gastric soups, or substances helping surgical interventions. It is clear that its uses can be several other ones, such as, for example, in the veterinary field.
- the heating system according to the present invention comprises at least one heating sheath in a flexible and electrically insulating material, such as, for example, plastics, rubber or adequate fabric, comprising inside it an electrically resisting material forming at least one electrically closed circuit, preferably made as a 12 V filament.
- the heating system according to the present invention further comprises electrical supply means to which the electrically closed circuit is connected, adapted to supply with current the electrically resisting material which inductively heats the fluid substance due to Joule effect.
- the electric supply means provide 12V direct current, both for use practicality reasons, and to guarantee a minimum electromagnetic safety level within hospital environments.
- the heating system according to the present invention can be easily supplied independently through electric supply means realised as a simple and scarcely encumbrant battery, avoiding a connection to the electric network supply, and allowing an extremely practical use, also under situations in which the network supply should not be present or be difficult to reach (such as for example in field hospitals or ambulances).
- the heating system can comprise electric supply control means which, by interacting with the electric supply means, manage and allow automatically or manually changing the amount of current supplied to the electrically closed circuit, allowing to adjust the amount of heat transmitted to the flowing substance and, consequently, its temperature.
- the control means can obviously be equipped with all those known devices, such as for example displays for displaying the set and obtained temperature and known service commands, which allow an easy use by a user.
- the control means can further comprise at least one temperature sensor for the flowing substance, which, by detecting its temperature, allows the comparison with a set temperature and manages reaching and keeping such temperature by operating on electric supply means.
- the minimum acceptable infusion temperature of the flowing substance will depend on the patient condition, on the infusion length, on the volume of substance which must be administered to the patient, and in some cases on the volume of patient blood before the infusion. In the majority of cases, the infusion temperature will anyway be at least near the patient body temperature.
- the filament 12 can obviously be arranged inside the heating sheath in an extremely wide variety of ways: the filament 12 can for example be arranged straight or so that it is arranged as a spiral.
- the heating sheath according to the present invention can be wound around a known distribution duct 10, along at least one portion of its length, adapted to distribute a flowing substance to a patient, both through infusion and through surgical use.
- the heating sheath can be equipped with securing means, such as for example Velcro(R) bands, buttons, constituoirs or specific adhesives, to allow their securing around the distribution duct 10.
- the heating sheath can already have a tubular shape, so that it allows inserting inside it the distribution duct 10. In such case, it can be provided to equip the heating sheath with inserts made of elastic material which allow adapting its sizes to a variable number of distribution duct 10 diameters.
- the distribution duct 10 equipped at one end thereof with a known insertion probe 16, is applied as an example to a supply and heating device 14 for a rinsing fluid for endoscopic interventions, but it is clearly evident that the same distribution duct 10 can be used in wholly different applications, depending on the used flowing substance, such as, for example, for infusions of blood, plasma or other physiologic solutions.
- the heating sheath of the heating system according to the present invention can be shaped as a heating distribution duct: in such embodiment, therefore, the filament 12 is substantially immersed inside the peripheral wall of the duct itself. It is clear that, in such case, along the heating distribution duct, only one circuit can be realised, which is electrically closed along the whole or part of its length, or many electrically closed circuits can be provided, which are controlled independently by the control means.
- the filament 12 can be further composed of a plurality of segments having mutually different diameters and/or electric and resistive characteristics, in such a way as to realise a certain temperature distribution inside the distribution duct 10 of the heating distribution duct: in this way, it is possible to provide for the progressive heating of the flowing substance during its transit.
- a further variation of the heating system according to the present invention can provide that the distribution duct 10 equipped with the heating sheath or the heating distribution duct according to the present invention can be directly inserted inside a bag or an ampule 22 containing the flowing substance to be withdrawn: in this way, the filament 12, in addition to heating the flowing substance in transit, directly pre-heats, inside the bag or ampule 22, as regards the immersed portion of the filament 12, the substance itself.
- the heating sheath according to the present invention is shaped as a heating bag 20 adapted to be arranged around a bag or an ampule 22 containing the flowing substance during its infusion to a patient.
- a heating bag 20 can be made of various materials, from gel to polythene, with specific and different thicknesses.
- the filament 12 can be arranged inside the heating sheath in a spiral way, while in the embodiment in FIG. 3b, the filament 12 is circularly arranged around the bag or ampule 22.
- the electrically closed circuit is then supplied with current by the electric supply means, possibly managed by the control means, it is heated due to Joule effect owing to its electric resistance, transferring heat by induction to the flowing substance inside the distribution duct 10, the heating distribution duct or the bag or ampule 22.
- the heating system according to the present invention thereby allows arranging the means for supplying the substance, such as for example pumps, tanks or bags, also at a relevant distance from the patient without impairing its heating.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- External Artificial Organs (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05425819A EP1788319A1 (fr) | 2005-11-21 | 2005-11-21 | Système de chauffage pour substances fluides |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05425819A EP1788319A1 (fr) | 2005-11-21 | 2005-11-21 | Système de chauffage pour substances fluides |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1788319A1 true EP1788319A1 (fr) | 2007-05-23 |
Family
ID=36283886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05425819A Withdrawn EP1788319A1 (fr) | 2005-11-21 | 2005-11-21 | Système de chauffage pour substances fluides |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1788319A1 (fr) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4934336A (en) * | 1989-05-26 | 1990-06-19 | White Steven J | Apparatus and method for warming intravenous equipment |
DE4444180A1 (de) * | 1993-12-14 | 1995-06-22 | Volker Barkey | Temperiervorrichtung für Infusionslösungen |
DE10020489A1 (de) * | 2000-02-25 | 2001-12-13 | Thomas Freiberger | Flächiges Heizelement |
DE10104344A1 (de) * | 2001-02-01 | 2002-08-14 | Frank-Ulrich Straus | Vorrichtung zum Erwärmen von Infusionsbehältern |
DE20311150U1 (de) * | 2003-03-14 | 2004-02-26 | Wenzel, Nicolaus, Dr. Dipl.-Ing., Dipl.Wirt.-Ing.(FH) REFA-Ing. EUR-Ing. | Textil beheizbarer Infusionswärmer |
WO2005056089A2 (fr) * | 2003-12-05 | 2005-06-23 | Paolo Passarello | Appareil |
-
2005
- 2005-11-21 EP EP05425819A patent/EP1788319A1/fr not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4934336A (en) * | 1989-05-26 | 1990-06-19 | White Steven J | Apparatus and method for warming intravenous equipment |
DE4444180A1 (de) * | 1993-12-14 | 1995-06-22 | Volker Barkey | Temperiervorrichtung für Infusionslösungen |
DE10020489A1 (de) * | 2000-02-25 | 2001-12-13 | Thomas Freiberger | Flächiges Heizelement |
DE10104344A1 (de) * | 2001-02-01 | 2002-08-14 | Frank-Ulrich Straus | Vorrichtung zum Erwärmen von Infusionsbehältern |
DE20311150U1 (de) * | 2003-03-14 | 2004-02-26 | Wenzel, Nicolaus, Dr. Dipl.-Ing., Dipl.Wirt.-Ing.(FH) REFA-Ing. EUR-Ing. | Textil beheizbarer Infusionswärmer |
WO2005056089A2 (fr) * | 2003-12-05 | 2005-06-23 | Paolo Passarello | Appareil |
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