WO2012136810A1 - Vorrichtung zum nicht-invasiven kühlen - Google Patents
Vorrichtung zum nicht-invasiven kühlen Download PDFInfo
- Publication number
- WO2012136810A1 WO2012136810A1 PCT/EP2012/056360 EP2012056360W WO2012136810A1 WO 2012136810 A1 WO2012136810 A1 WO 2012136810A1 EP 2012056360 W EP2012056360 W EP 2012056360W WO 2012136810 A1 WO2012136810 A1 WO 2012136810A1
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- WIPO (PCT)
- Prior art keywords
- warm
- blooded animal
- reagent
- cooling
- heat
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F7/03—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/10—Cooling bags, e.g. ice-bags
- A61F7/106—Cooling bags, e.g. ice-bags self-cooling, e.g. using a chemical reaction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0001—Body part
- A61F2007/0002—Head or parts thereof
- A61F2007/0009—Throat or neck
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0095—Heating or cooling appliances for medical or therapeutic treatment of the human body with a temperature indicator
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0244—Compresses or poultices for effecting heating or cooling with layers
- A61F2007/0246—Compresses or poultices for effecting heating or cooling with layers with a layer having high heat transfer capability
- A61F2007/0247—Using a substance with high conductivity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0244—Compresses or poultices for effecting heating or cooling with layers
- A61F2007/0257—Compresses or poultices for effecting heating or cooling with layers with a fluid impermeable layer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0268—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier
- A61F2007/0276—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier with separate compartments connectable by rupturing a wall or membrane
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0292—Compresses or poultices for effecting heating or cooling using latent heat produced or absorbed during phase change of materials, e.g. of super-cooled solutions
Definitions
- the present invention relates to a device for non-invasively cooling the brain of a, in particular human, warm-blooded animal with connectable autarkic refrigerants and fastening means for attachment in the neck-head region of the warm-blooded animal.
- Devices of the type mentioned above are used in the case of warm-blooded animals after the onset of certain disease states, such as ischemic hypoxia of the brain, to be treated as part of the first aid by targeted local production of hypothermia.
- certain disease states such as ischemic hypoxia of the brain
- generic devices allow the local temperature drop in the neck-head area of the warm-blooded animal. This should be distinguished from methods and devices in which a systemic hypothermia with the associated additional risks.
- a device of the type mentioned is known for example from US 4,750,493.
- the known device is based on a refrigerant in the form of tablets of ammonium nitrate, which are brought to trigger the refrigeration with a water reservoir for triggering an endothermic reaction in combination. In this way it is possible with the known device to produce the cold self-sufficient, without a connection to an external device is required.
- the known device is designed like a hood. Unfortunately, therefore, the desired cooling effect for the brain is insufficiently available. Because the cooling is done by the highly heat-insulating scalp and skull, which is a barrier to heat exchange with the brain. With disadvantage, therefore, the cooling occurs at least delayed, although the fastest possible cooling is sought to effectively prevent irreversible damage in the first-aid area. In addition, in the known device due to the application to the skull in certain circumstances with disadvantage, a sufficient temperature reduction in the brain area is not possible.
- the present invention is therefore based on the object to improve a device of the type mentioned while avoiding the disadvantages of the prior art in that a faster and more effective lowering of the brain temperature in patients without medical professionals can be achieved.
- this object is achieved in a generic device in that the fastening means are designed such that the device is attachable to the warm-blooded animal for producing a heat-conducting connection between the refrigeration means and at least one carotid artery of the warm-blooded animal.
- the carotid arteries especially in human patients are located in the neck area comparatively close to the skin surface. They act as heating cables for the brain.
- the fastening means are designed such that the device is at least one with a carotid artery in heat exchange area with the refrigerant generating means substantially overlapping fastened, can be advantageously a targeted cooling of the blood flowing to the brain by a direct Achieve heat exchange.
- the refrigeration means comprise means for triggering an endothermic reaction, in particular by combining a first reagent with a second reagent.
- This embodiment of the refrigeration means advantageously allows refrigeration independently of external energy sources or the like.
- the refrigeration is easily possible even by medical laymen, for example in first aid situations.
- only the first in particular must be associated with the second reagent by, for example, opening a water-containing container for mixing with a salt. Upon dissolution of the salt, the mixture, as known per se, absorbs ambient heat.
- ammonium nitrate may be associated with water to obtain the cooling effect of the present invention.
- other salts can be dissolved in water to obtain this effect.
- urea, common salt, potassium chloride or magnesium chloride is useful as a reagent to be dissolved in water.
- the refrigeration means comprise a first, the first reagent and a chemically opposite to this second, filled with the second reagent, flexible container containing flexible tubular container.
- the second container may be a plastic bag filled with water.
- the first, outer container can be configured as a plastic container which contains the water-filled plastic envelope next to the first reagent.
- films of polyamide, polyethylene or polypropylene or mixtures thereof have proven to be suitable materials for the containers.
- the decisive factor in the choice of material according to the invention is that a chemical separation of the stored in the two containers reagents is ensured over long periods. On the other hand, it should be possible to burst the water-containing bag to initiate the endothermic reaction.
- the first container is divided into two or more sub-volumes communicating with one another, the first reagent being distributed over the sub-volumes, it is advantageously possible to achieve control of the time profile of the cooling effect.
- a different amount of the first reagent in the different sub-volumes may be included in order to achieve a delayed initiation of the endothermic reaction, depending on the achievement of the second reagent, that is usually water, of the respective sub-volume.
- different reagents for example different salts
- the first reagent may advantageously be designed to endothermically react with the second reagent, the first reagent being in the form of granules with a large number of grains, as a suspension and / or as a gel.
- a coating for acceleration may in particular comprise a catalyst.
- the retarding coating of the grains may comprise cellulose.
- a uniform, at the same time short-term as well as long-lasting cooling performance can be achieved in a special embodiment of the invention, when the granules consists of a mixture of grains with different volumes.
- the same effect has another advantageous embodiment of the invention, according to which the granules consist of a mixture of grains with coatings of different materials and / or grains with different layer thicknesses.
- the person skilled in the art will be able, on the basis of his expert knowledge, to determine suitable mixture compositions with regard to layer thickness and coating materials on the basis of routine tests in order to produce a desired time profile of the cooling performance.
- the fastening means are designed like a cervix for attachment around the neck of the warm-blooded animal.
- Velcro fasteners or the like may be provided for closing the cervical collar.
- the device is further improved if, in addition, a band-shaped pressure closure is attached around the preferably cervical device for tightening in order to optimize the contact pressure of the device in the region of the carotid arteries.
- the contact pressure in this area is additionally optimized in relation to the rest of the band.
- the fastening means are designed like a life jacket for hanging around the neck of the warm-blooded animal.
- a contacting of the cold generating means with areas of the neck of the warm-blooded animal must be ensured, which are in heat-transmitting connection with the carotid arteries.
- the device according to the invention is further improved when heat conduction means, in particular a, preferably hydrophilic, gel comprising, are arranged for contacting a skin area of the warm-blooded animal in an environment with at least one carotid artery in order to promote heat transfer via the heat-conducting connection.
- heat conduction means in particular a, preferably hydrophilic, gel comprising
- a mixture of water with methyl paraben (4-hydroxybenzoic acid methyl ester) has proven to be suitable in this context to achieve the most effective heat conduction between the carotid arteries and the cooling means.
- the heat conducting means may comprise a cushion-like carrier, which is preferably provided with a protective film which can be removed for intended use.
- a cushion-like carrier which is preferably provided with a protective film which can be removed for intended use.
- temperature control means are provided to counteract caused by the refrigeration means cooling below a predetermined temperature value.
- the embodiment of the device can be adjusted to the target temperature range of 32 ° C. to 34 ° C. in the brain, that is to say the range of the so-called therapeutic mild hypothermia.
- Suitable temperature control means are in particular passive regulators in question.
- the temperature control means may comprise latent heat storage agents, preferably containing paraffin-like substances.
- latent heat storage is understood in the context of the present invention, the storage of heat in a material undergoing a phase transition.
- phase change materials PCM are suitable as latent heat storage agents.
- this material can be present in particular as microcapsules.
- paraffin-like substances are stored, in per se known manner is a storage of heat in the phase transition from solid to liquid, when the material absorbs heat and keeps the temperature stable in this way down.
- a phase transition from liquid to solid when the material gives off heat and keeps the temperature constant in this way.
- the temperature control means for preventing a heat conductive connection between the refrigeration means and the warm-blooded animals in areas that are not substantially in heat exchange with a carotid artery of the warm-blooded be arranged. It is advantageously achieved by this arrangement of the temperature control means according to the invention that the transfer of the cooling power from the refrigerants to the carotid arteries is not affected by the temperature control means, while ensuring that the area outside the areas in heat exchange with the carotid arteries is not undesirably affected is cooled down.
- a material is selected in a manner known in the art with a phase transition at the civilregelnden temperature.
- display means for indicating a connection of the refrigeration means are present, it will be easier for the operator, who will often be a medical lender, to determine whether or not he has already switched on the refrigeration means.
- a display means for example, a light emitting diode can be used, which is turned on when activating the refrigeration means simultaneously.
- temperature detection means can be provided in a further development of the invention.
- a color change field which is attached to the device in such a way that it measures a temperature of the warm-blooded animal.
- JP 09313520 A it is described, for example, in JP 09313520 A, that it is possible to conclude the core temperature of the warm-blooded animal by means of a temperature measurement on the skin. This may be an important parameter in using the device of the invention to indicate whether there is undesirable systemic hypothermia, in which case the treatment should be discontinued.
- the device is essentially sandwiched in layers, wherein a cooling layer containing the cold generating means is substantially covered by a separation layer formed for damaging the cooling layer of the warm-blooded animal, wherein the separating layer has recesses for producing the heat-conducting compound.
- the device according to the invention can be provided with a moisture-absorbing, in particular superabsorbent, coating.
- the superabsorbents can advantageously be moistened in order to achieve a long-lasting cooling by evaporative cooling on the skin of the warm-blooded animal.
- the superabsorbent materials can also absorb sweat of the warm-blooded animal to enhance this effect.
- FIG. 1 shows a schematic section through a device according to the invention for cooling the brain
- FIG. 2 top view of the device according to the invention according to FIG. 1 on the side facing the patient in the direction of the arrow II according to FIG. 1;
- FIG. 3 a view of the side of the device according to FIG. 1 to be averted from the patient in the direction of arrow III in FIG. 1;
- FIG. 4 shows a section through the device according to FIG. 1 along the line IV-IV in FIG. 1;
- FIG. 5 shows a section through the device according to the invention according to FIG. 1 along the line V-V in FIG. 1;
- FIG. 6 top view corresponding to the illustration in FIG. 2 of an alternative embodiment of a device according to the invention.
- the brain cooler 1 shows a schematic sectional view of a brain cooler 1 as an embodiment of an inventive device for non-invasive, selective cooling of the brain of a patient.
- the brain cooler 1 has generally, as seen in the plan views of Figures 2 and 3, the shape of a rectangular wide band, which can be placed like a neck brace around the neck of a human patient.
- the brain cooler 1 is sandwiched in several layers.
- a first separation layer 2 is provided for the intended use of the brain cooler 1 for direct placement on the neck of the patient.
- the separation layer 2 is followed by a temperature-stabilizing layer 3.
- the temperature-stabilizing layer 3 is followed by a cooling layer 4 in the direction of the patient-remote side of the brain cooler 1.
- the cooling layer 4 is covered on the side facing away from the patient with a further temperature-stabilizing layer 5.
- a strongly insulating outer layer 6 adjoins the temperature-stabilizing outer layer 5 again on the side facing away from the patient.
- the overall flexible brain cooler 1 is provided on the side of the separating layer 2 remote from the patient with a soft Velcro pad.
- the soft Velcro pad 7 is used for ring-like merging of the brain cooler 1 with a remote on the patient side of the outer layer 6 hard Velcro pad 8.
- the brain cooler 2 is placed with the release liner 2 on the neck of the patient and around the neck.
- the hard Velcro pad 8 is guided under the area covered by the soft Velcro pad 7 and closed with the soft Velcro pad 7.
- any other method of closure, in particular magnetic, or hooks or the like can be used in the invention.
- the separating layer 2 is made of neoprene, in particular with a thickness of 1.5 or 2 mm.
- the separating layer 2 is interrupted by two recesses 9 arranged in pairs. In the region of the recesses 9 is thus given a direct heat-conducting connection between the patient facing the outside of the release liner 2 to deeper layers of the brain cooler 1.
- FIG. 2 shows, in the direction of arrow II according to FIG. 1, a plan view of the side of separating layer 2 facing the patient.
- the configuration of recesses 9 can be clearly seen.
- the recesses 9 each have the shape of a parallelogram, wherein they are starting from a parallel aligned, bottom 10 facing away from each other V-like.
- a distance 11 between the two recesses 9 is therefore at the bottom 10 about 2 mm, whereas a distance 12 at the also parallel aligned tops of the recesses 9 is 40 mm.
- the height 13 of the recesses 9 is about 80 mm.
- the width 14 of the recesses 9 is about 30 mm.
- the recesses 9 in the separating layer 2 make it possible to place the brain cooler 1 around the neck of a human patient in such a way that the recesses 9 are arranged over regions of the neck where the carotid arteries are close to the surface and in this way heat exchange allow with the environment.
- the recesses 9 in the separating layer 2 are filled in particular with a contact plaster saturated with cooling plaster 15.
- the cooling plaster 15 is preferably impregnated with hydroxy-ethylcellulose gel and / or non-ionic hydrous liniment and optionally gold-containing nanoparticles and provided with a peelable protective film to the patient-to-use page.
- the cooling plaster 15 is shown schematically in FIG. 2 by hatching only for the recess 9. In fact, however, according to a preferred embodiment of the invention, both recesses 9 are filled with a cooling or contact gel-containing cooling plaster.
- the temperature-stabilizing layer 3 consists of a latent heat storage material in the manner of a thermal nonwoven.
- a multicomponent fiber based on paraffin hydrocarbons has proven suitable as the latent heat storage material.
- Such a material and its special structure for achieving the temperature-stabilizing properties is described, for example, in DE 601 24 275 T2, to the disclosure of which reference is expressly made.
- DE 699 23 566 T2 the person skilled in a suitable for use as a temperature-stabilizing layer 3 in the context of the present invention suitable material design based on microencapsulated phase change materials.
- the thermally insulating article described in DE 698 23 690 T2, in which a phase change material contained in a multiplicity of microspheres also contains paraffinic hydrocarbons, is suitable for the temperature-stabilizing layer 3 according to the invention.
- the material of the temperature-stabilizing layer 3 according to the invention is preferably selected for adjustment to a temperature value of 11.5 ° C. Accordingly, the melting point of the phase change material is to be selected substantially at 11.5 ° C. This can be achieved by those skilled in the context of routine experiments by finding suitable mixtures, for example, different-chain paraffinic hydrocarbons.
- a cooling layer 4 adjoins the temperature-stabilizing layer 3.
- the illustration according to FIG. 5 corresponds to a section along the line V-V in FIG. 1, wherein a partial section of the separating layer 2 is additionally shown cut away.
- the cooling layer consists of an outer film tube 17.
- the outer film tube 17 which is made according to the embodiment described here in particular from a mixture of polyamide and polyethylene, there are a number of grains 18 of ammonium nitrate and / or urea.
- the grains 18 are arranged distributed within the inner volume of the outer film tube 17.
- the outer film tube 17 further includes a water bag 19 made of a polyamide / polyethylene mixture.
- the water bag 19 is completely closed in order to keep the water contained therein completely separate from the grains 18 in the film tube 17 at first.
- the outer film tube 17 is also completely sealed, so that neither the grains 18 nor the water bag 19 still liquid water can escape from the film tube 17.
- the film tube 17 forming the cooling layer 4 extends according to the exemplary embodiment described here over the entire extent of the brain cooler 1.
- a further temperature-stabilizing layer 5 adjoins the cooling layer 4 on the side of the brain cooler 1 facing away from the patient.
- This is essentially the same as regards the material and the other properties, with the exception of the melting point of -1.5 ° C. here, as well as the above-described temperature-stabilizing layer 3, which is applied to the separating layer 2 which is in contact with the patient is connected.
- the temperature-stabilizing layer 5 between the cooling layer 4 and the outer layer 6 is not interrupted by a recess.
- FIG. 3 a plan view corresponding to the arrow III in FIG. 1 can be seen on the brain cooler 1, which shows the outer layer 6.
- the outer layer 6 is made of neoprene, preferably a thickness of 1.5 or 2 mm.
- a pressure point 20 can be seen on the surface of the outer layer 6 by color marking for the user. The pressure point 20 is placed on the backsheet 6 so as to be positioned about the larynx in the patient-applied condition of the brain cooler 1 at the neck of a patient.
- the pressure point 20 is marked such that it lies approximately centrally above the water bag 19, which in turn within the outer film tube 17 substantially in the region of the recess 16 within the temperature-stabilizing layer 3 and thus above the recesses 9 in the separating layer 2 is arranged.
- a substantially rectangular shaped diode light strip 21 is arranged around the pressure point 20. This is attached to the surface of the outer layer 6 of neoprene, for example by gluing.
- the diode light strip 21 is designed commercially.
- an incision 22 is incorporated in the outer layer 6, through which a cable of the diode strip 21 is arranged to the arranged underneath, not shown in the figures, battery and switching electronics.
- the switching electronics of the diode strip 21 is configured and arranged such that upon application of pressure to the pressure point 20 from a minimum pressure, the diode strip 21 is turned on to indicate that the pressure point 20 has been actuated and the water bag 19 is burst to the endothermic reaction within the cooling layer 4 in motion.
- the individual layers and components of the brain cooler 1 are connected to each other by suturing or gluing.
- the cooling patches 15 can be sewn to the separating layer 2 at the edges of the recesses 9.
- the temperature-stabilizing layer 3 is preferably sewn to separation layer 2 or integrated by high-pressure vapor deposition.
- the outer film tube 17 is sewn to the film seams surrounding it, which are not shown in the figures, with the release liner 2.
- the second temperature-stabilizing layer 5 which adjoins the cooling layer 4, sewn or glued to the release liner 2.
- the release liner 2 is sewn to the outer layer 6.
- the suturing can not be seen in the figures, in particular in FIG.
- the procedure is as described below.
- the user places the brain cooler 1 on a solid surface with the outer layer 6 upwards.
- a pressure is exerted on the in the cooling layer 4 arranged below water bag 19, which causes the water bag 19 to burst.
- the grains 18 now dissolve in the course of an endothermic reaction while absorbing heat.
- the separating layer 2 and in particular the temperature-stabilizing layers 3 and 5, which surround the cooling layer 4, ensure that, on the one hand, a heat exchange takes place essentially exclusively via the mentioned heat-conducting channel through the recesses 16, 9 and the cooling plaster 15 in order to selectively remove only the To cool the carotid arteries of the patient.
- the temperature-stabilizing layers 3, 5 also counteract undesired cooling down of the brain of the patient under a temperature value selected in this exemplary embodiment at 32 ° C.
- the deployment of the cooling capacity within the cooling layer 4 may be selectively controlled in the manufacture of the brain cooler when the size of the grains 18 is varied and / or when a certain size distribution of the grains 18 is used. Also, all or part of the grains 18 may be provided with a coating which retards the endothermic reaction, for example of cellulose.
- the outer film tube 17 may be divided into sub-volumes. In particular, a partial volume can be defined such that slipping of the water bag 19 with respect to the pressure point 20 on the outer layer 6 is prevented.
- a brain cooler according to the invention as a preferred embodiment of a device for non-invasive, selective cooling of the brain according to the preamble of claim 1 is proposed, which can be used as a first-aid on-site medical laypersons for immediate treatment, especially with therapeutic mild hypothermia ,
- a targeted cooling only of the brain by attacking the carotid arteries is proposed.
- the special material composition and arrangement of the brain cooler according to the invention also ensures that a medically questionable excessive cooling down is counteracted.
- FIG. 6 shows, in a plan view corresponding to the illustration in FIG. 2, an alternative embodiment of a device according to the invention for cooling the brain.
- the internal structure and basic mode of operation of the device shown in FIG. 6 can be corresponding to the construction and the basic mode of operation of the device explained with reference to FIGS. 1 to 5.
- the embodiment shown in Figure 6 shows a particularly favorable form of an upper end 23 of the device.
- This has in a region between the V-shaped recesses 9 a concave portion 24 whose curvature is chosen so that the device for producing a particularly good heat-conducting connection between the carotid arteries and the recesses 9, taking into account the body shape in the transition between Neck and jawbone is suitable.
- the concave section 24 of the upper end 23 is adjoined on both sides by a further concavely curved section 25, 26.
- the concave curved portions 25, 26 have a smaller curvature than the concave portion 24 between the recesses 9 in the upper end 23 of the brain cooler 1, adapted to a curvature of the circumference of the neck of the patient when the brain cooler is applied to the neck of a patient to be.
- the curvature of adjacent portions 24, 24 and adjacent portions 24, 26 is configured such that a distance 27 of the upper end 23 from the straight lower end 28 decreases with increasing distance from the concave portion 24.
- the concave portion 24 in the region between the recesses 9 on both sides by tapered portions 29, 30 is limited.
- a brain cooler according to FIG. 6 is applied to the neck, for example by means of a hook and loop fastener or other devices known per se, it fits particularly well with the concave sections 24, 25, 26 due to the shape of the upper end 23 shown in FIG the anatomical shape of a human neck to be able to produce in this way a particularly good heat-conducting connection in the region of the recesses 9 with the carotid arteries.
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
Description
- Gehirnkühler
- Trennlage
- temperaturstabilisierende Lage
- Kühllage
- temperaturstabilisierende Lage
- Außenlage
- weiches Klettpolster
- hartes Klettpolster
- Aussparung
- Unterseite
- Abstand
- Abstand
- Höhe
- Breite
- Kühlpflaster
- Aussparung
- äußerer Folienschlauch
- Körner
- Wasserbeutel
- Druckpunkt
- Diodenleuchtband
- Einschnitt
- oberer Abschluss
- konkaver Abschnitt
- konkav gekrümmter Abschnitt
- konkav gekrümmter Abschnitt
- Abstand
- unterer Abschluss
- spitz zulaufender Bereich
- spitz zulaufender Bereich
Claims (20)
- Vorrichtung (1) zum nicht-invasiven Kühlen des Gehirns eines, insbesondere menschlichen, Warmblüters mit zuschaltbaren autarken Kälteerzeugungsmitteln (4, 18, 19) und Befestigungsmitteln zum Befestigen im Hals-Kopfbereich des Warmblüters, dadurch gekennzeichnet, dass die Befestigungsmittel derart ausgestaltet sind, dass die Vorrichtung (1) an dem Warmblüter zur Herstellung einer wärmeleitenden Verbindung (9, 15, 16) zwischen den Kälteerzeugungsmitteln (4, 18, 19) und mindestens einer Halsschlagader des Warmblüters befestigbar ist.
- Vorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Befestigungsmittel derart ausgestaltet sind, dass die Vorrichtung (1) mindestens einen mit einer Halsschlagader des Warmblüters in Wärmeaustausch stehenden Bereich mit den Kälteerzeugungsmitteln (4, 18, 19) im wesentlichen überdeckend befestigbar ist.
- Vorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kälteerzeugungsmittel (4, 18, 19) Mittel zum Auslösen einer endothermen Reaktion, insbesondere durch Zusammenbringen eines ersten Reagenz (18) mit einem zweiten Reagenz, umfassen.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kälteerzeugungsmittel (4, 18, 19) einen ersten, das erste Reagenz (18) sowie einen chemisch gegenüber diesem geschlossenen zweiten, mit dem zweiten Reagenz gefüllten, flexiblen Behälter (19) enthaltenden flexiblen schlauchartigen Behälter (17) umfassen.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der erste Behälter (17) in zwei oder mehr miteinander kommunizierende Teilvolumina aufgeteilt ist, wobei das erste Reagenz (18) über die Teilvolumina verteilt angeordnet ist.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Reagenz (18) mit dem zweiten Reagenz endotherm reagierend ausgestaltet ist, wobei das erste Reagenz (18) als Granulat mit einer Vielzahl von Körnern, als Suspension und/oder als Gel vorliegt.
- Vorrichtung (1) nach Anspruch 6, dadurch gekennzeichnet, dass wenigstens einige der Körner mit einer die endotherme Reaktion mit dem zweiten Reagenz verzögernden und/oder beschleunigenden Beschichtung versehen sind.
- Vorrichtung (1) nach Anspruch 7, dadurch gekennzeichnet, dass die verzögernde Beschichtung Zellulose umfasst.
- Vorrichtung (1) nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass das Granulat aus einem Gemisch von Körnern mit unterschiedlichen Volumina besteht.
- Vorrichtung (1) nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass das Granulat aus einem Gemisch von Körnern (18) mit Beschichtungen aus unterschiedlichen Stoffen und/oder von Körner (18) mit unterschiedlichen Schichtdicken besteht.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Befestigungsmittel halskrausenartig zum Befestigen um den Hals des Warmblüters herum ausgestaltet sind.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Befestigungsmittel schwimmwestenartig zum Umhängen um den Hals des Warmblüters ausgestaltet sind.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Wärmeleitungsmittel (15), insbesondere ein, vorzugsweise hydrophiles, Gel und/oder ein Liniment umfassend, zur Kontaktierung mit einem Hautbereich des Warmblüters in einer Umgebung mindestens einer Halsschlagader angeordnet sind, um eine Wärmeübertragung über die wärmeleitende Verbindung zu unterstützen.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Wärmeleitungsmittel einen kissenartigen Träger (15) umfassen, welcher vorzugsweise mit einer zum bestimmungsgemäßen Gebrauch entfernbaren Schutzfolie versehen ist.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Temperaturregelungsmittel (3, 5) vorgesehen sind, um einer durch die Kälteerzeugungsmittel (4, 18, 19) hervorgerufenen Abkühlung unter einen vorgegebenen Temperaturwert entgegenzuwirken.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Temperaturregelungsmittel (3, 5) Latentwärmespeichermittel, vorzugsweise paraffinähnliche Substanzen enthaltend, umfassen.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Temperaturregelungsmittel (3, 5) zur Unterbindung einer wärmeleitenden Verbindung zwischen den Kälteerzeugungsmitteln (4, 18, 19) und dem Warmblüter in Bereichen, die mit einer Halsschlagader des Warmblüters im wesentlichen nicht in Wärmeaustausch stehen, angeordnet sind.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Anzeigemittel (21) zum Anzeigen einer Zuschaltung der Kälteerzeugungsmittel (4, 18, 19) aufweisen.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Temperaturanzeigemittel vorgesehen sind.
- Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie im wesentlichen sandwichartig in Lagen (2, 3, 4, 5, 6) aufgebaut ist, wobei eine das Kälteerzeugungsmittel (4, 18, 19) enthaltende Kühllage (4) durch eine zum Wärmeisolieren der Kühlschicht von dem Warmblüter ausgebildete Trennlage (2) im wesentlichen überdeckt ist, wobei die Trennlage (2) Aussparungen (9) zur Herstellung der wärmeleitenden Verbindung aufweist.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/110,602 US20140128945A1 (en) | 2011-04-08 | 2012-04-05 | Noninvasive cooling device |
JP2014503162A JP2014509915A (ja) | 2011-04-08 | 2012-04-05 | 非侵襲式冷却器具 |
EP12715048.0A EP2693997A1 (de) | 2011-04-08 | 2012-04-05 | Vorrichtung zum nicht-invasiven kühlen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102011001932.4 | 2011-04-08 | ||
DE102011001932A DE102011001932B3 (de) | 2011-04-08 | 2011-04-08 | Vorrichtung zum nicht-invasiven Kühlen |
Publications (1)
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WO2012136810A1 true WO2012136810A1 (de) | 2012-10-11 |
Family
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PCT/EP2012/056360 WO2012136810A1 (de) | 2011-04-08 | 2012-04-05 | Vorrichtung zum nicht-invasiven kühlen |
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US (1) | US20140128945A1 (de) |
EP (1) | EP2693997A1 (de) |
JP (1) | JP2014509915A (de) |
DE (1) | DE102011001932B3 (de) |
WO (1) | WO2012136810A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US12011382B2 (en) | 2010-12-02 | 2024-06-18 | Neurorescue, Inc. | Cervical collar |
US9486354B2 (en) * | 2010-12-02 | 2016-11-08 | Neurorescue, Llc | Cervical collar |
US10426658B2 (en) * | 2010-12-02 | 2019-10-01 | Neurorescue, Llc | Cervical collar |
US20140379058A1 (en) * | 2013-06-24 | 2014-12-25 | Ampac Enterprises Inc. | Apparatus and Method for Cooling Head Injury |
DE102014118510B4 (de) | 2014-12-12 | 2023-07-06 | Technische Universität Chemnitz | Textiles Flächengebilde zur Einleitung einer milden Hypothermie und Transportvorrichtung |
US20170260492A1 (en) * | 2016-03-08 | 2017-09-14 | Tokitae Llc | Temperature stabilized culture incubator |
US10687632B1 (en) | 2016-04-03 | 2020-06-23 | Soothsoft Innovations Worldwide, Inc. | PCM containing liquid saturated foam device |
DE102016007904A1 (de) * | 2016-06-28 | 2017-12-28 | Selahattin Günes | Gerät für die Kryolipolyse als Latentwärmespeicher |
KR101887922B1 (ko) * | 2017-12-14 | 2018-08-13 | 노성일 | 냉 매트 |
US12049584B2 (en) * | 2019-03-18 | 2024-07-30 | Sabine Zureikat | Composition and method for producing the sensory stimulant |
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- 2012-04-05 JP JP2014503162A patent/JP2014509915A/ja active Pending
- 2012-04-05 WO PCT/EP2012/056360 patent/WO2012136810A1/de active Application Filing
- 2012-04-05 EP EP12715048.0A patent/EP2693997A1/de not_active Withdrawn
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US4750493A (en) | 1986-02-28 | 1988-06-14 | Brader Eric W | Method of preventing brain damage during cardiac arrest, CPR or severe shock |
US4780117A (en) * | 1987-04-14 | 1988-10-25 | Lahey Thomas P | Time release cooling system |
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WO2008072108A1 (en) * | 2006-12-13 | 2008-06-19 | Kimberly-Clark Worldwide, Inc. | Chambered instant cold pack |
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EP2693997A1 (de) | 2014-02-12 |
US20140128945A1 (en) | 2014-05-08 |
DE102011001932B3 (de) | 2012-08-02 |
JP2014509915A (ja) | 2014-04-24 |
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