WO2017148984A1 - Appareil de régulation de température à usage médical - Google Patents

Appareil de régulation de température à usage médical Download PDF

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Publication number
WO2017148984A1
WO2017148984A1 PCT/EP2017/054717 EP2017054717W WO2017148984A1 WO 2017148984 A1 WO2017148984 A1 WO 2017148984A1 EP 2017054717 W EP2017054717 W EP 2017054717W WO 2017148984 A1 WO2017148984 A1 WO 2017148984A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature control
medium
medium bag
circuit
bag
Prior art date
Application number
PCT/EP2017/054717
Other languages
German (de)
English (en)
Inventor
Joachim Jäger
Heinz Schade
Original Assignee
Heinz Schade Gmbh
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
Application filed by Heinz Schade Gmbh filed Critical Heinz Schade Gmbh
Publication of WO2017148984A1 publication Critical patent/WO2017148984A1/fr

Links

Classifications

    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/44—Devices 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
    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1654—Dialysates therefor
    • A61M1/1656—Apparatus for preparing dialysates
    • A61M1/166—Heating
    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/367—Circuit parts not covered by the preceding subgroups of group A61M1/3621
    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/369—Temperature treatment
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling

Definitions

  • Temperieraeetz for medical technology
  • the invention relates to a Tempeher réelle for medical technology with a Temperier Vietnamesesburg, a heat exchanger, a heating or cooling system and a consumer cycle.
  • Temperature control units are used wherever substances - whether solid, liquid or gaseous - are to be brought to a defined temperature. This may be necessary in industrial production as well as in a research laboratory or clinic. The requirements for the devices differ in specific parameters, but basically they work according to the same principle.
  • a tempering circuit this is to be understood summarized heating and cooling circuits
  • a consumer circuit which are coupled via a heat exchanger, the temperature control circuit is connected to a heating and / or cooling system.
  • Temperature control units that work in a sterile environment must also be sterile themselves.
  • the problem common today Temperieroara is that in the course of time in the temperature control medium and in the wake in the temperature control germs can form, which also get into the ambient air and thus can spread in actually sterile environment.
  • temperature control units are indispensable, as infusion temperature controllers, devices for extracorporeal perfusion or as part of heart lung machines, this represents an absolutely avoidable risk to the health of the patient.
  • the object of the invention is therefore to provide a temperature control device whose temperature control is sterile and easy and inexpensive replaceable. Thus, even with prolonged start-up of the temperature control, the known especially from heat circuits and dangerous for the patients germination coil can be prevented.
  • a temperature control unit having a consumer circuit, a temperature control system coupled to the consumer circuit via a heat exchanger and a heating or cooling system which heats or cools the temperature control circuit to a selectable temperature, and which is characterized in that the temperature control system is sterile, completed and exchangeable.
  • the temperature control device with a consumer circuit, a temperature control system coupled to the consumer circuit via a heat exchanger and a heating or cooling system which heats or cools the temperature control system to a selectable temperature is characterized in that the entire temperature control system is self-contained and interchangeable ,
  • the sterile temperature control system comprises a sterile medium bag, which contains the sterile temperature control medium, and a sterile tube attached to the medium bag, which forms the temperature control circuit.
  • a sterile medium bag which contains the sterile temperature control medium
  • a sterile tube attached to the medium bag, which forms the temperature control circuit.
  • the medium is moved in the temperature control circuit by a peristaltic pump.
  • the peristaltic pump is located between the heat exchanger and the medium bag and conveys the tempering medium from the heat exchanger in the direction of the medium bag.
  • This arrangement creates a constant negative pressure in the area in front of the peristaltic pump, ie where the heat exchanger is located in the temperature control circuit. Should a leak occur between the consumer circuit and the temperature control circuit in the region of the heat exchanger, the pressure conditions generated by this arrangement minimize inflow of the temperature control medium into the consumer circuit.
  • liquids such as electrolytic solutions conceivable.
  • sterile, physiologically acceptable or blood-compatible solutions for example Ringer's or isotonic saline solutions.
  • an infusion fluid such as blood or plasma
  • a leak occurs between the temperature control circuit and the consumer circuit in the area of the heat exchanger, such a temperature control medium would be largely harmless to the health of the patient.
  • filling openings are optionally conceivable on the temperature control circuit, on the circulation circuit or on the medium bag.
  • the tempering medium should have a temperature that is as homogeneous as possible, at least within the medium bag. For this purpose it makes sense to mix the tempering medium in the medium bag. In a preferred embodiment of the temperature control device according to the invention this is done by a circulation circuit.
  • a further hose circuit is attached to the medium bag, through which the temperature control medium can be pumped from the medium bag through a peristaltic pump back to the medium bag.
  • the circulation circuit is an integral part of the exchangeable sterile temperature control system, which thus comprises tempering circuit, medium bag and circulation circuit, is sterile and can be replaced as a whole.
  • the inlet of the circulation circuit is preferably in the vicinity of the return of the temperature control circuit and the return of the circulation is preferably in the vicinity of the inlet of the temperature control.
  • centrifugal pumps which are available as a disposable plastic
  • the pumps are not mounted as hose pumps on the hose lines, but in a wide design as roller pumps directly on the media bag.
  • Feed and return are preferably located on two opposite sides of the medium bag, wherein the pump is mounted parallel to these two sides and extends with their roles over the entire width of the medium bag.
  • the tempering medium is transported by the roller pump from one side of the medium bag, the side with the return, to the opposite side of the medium bag, the side with the inlet. In this way, the temperature control flows through the inlet into the temperature control circuit and through the return back into the media bag.
  • a separate recirculation would not be necessary in this embodiment, but supportive conceivable.
  • a temporary overpressure obtained by the compression of the medium bag become.
  • a respective valve for example a check valve or pressure valve, at the supply and return connection between the temperature control circuit and the medium bag.
  • the medium At the inlet, from the medium bag to the temperature control circuit, the medium can only flow through the valve in the direction of the temperature control circuit.
  • the medium At the return, from the temperature control circuit to the medium bag, the medium can flow through the valve only in the direction of the medium bag.
  • an overpressure prevails in the medium bag, which can only relieve pressure via the valve at the inlet, so that the medium flows into the temperature control circuit.
  • the overpressure built up in the temperature control circuit can then be relieved only via the valve at the inlet and medium flows into the medium bag.
  • a constant repetition of this cycle leads to a constant medium flow through the tempering circuit and at the same time to a mixing of the medium in the medium bag.
  • a separate circulation circuit would not be necessary in this embodiment, but supportive conceivable.
  • moving plates are conceivable, on which the medium bag is fastened. Also in this case can be dispensed with an additional circulation circuit of the type described above, if necessary, but not on the previously described pumps in the temperature control.
  • thermoelectric elements As heat or cooling elements, all common means known in the art can be used. Particularly conceivable are so-called Peltier elements, as they are often used in such devices their use.
  • the sterile medium bag is easily interchangeably attached to a device, such as a temperature-conductive plate, which is connected to the heat or cooling elements.
  • the tempering device according to the invention has the advantage over the prior art that the complete tempering system can be exchanged cost-effectively. It is thus possible to use a new sterile temperature control system for each new application and to prevent the formation, propagation and spread of germs. The Dangers that represent an unsterile temperature control device for patients are virtually eliminated when using a system according to the invention.
  • FIG. 1 shows a preferred embodiment of the temperature control unit D according to the invention.
  • the temperature control system E comprises a temperature control circuit B, a circulation circuit C and a medium bag 2.
  • the circulation circuit C can also be dispensed with and the circulation of the temperature control medium can be carried out by other conventional methods.
  • the complete tempering system E is sterile, self-contained and thus interchangeable in one part.
  • the temperature control B is connected via a heat exchanger 1 to the consumer circuit A.
  • At Temperier Vietnamese Vietnamese Pump B is located between the heat exchanger 1 and the sterile medium bag 2, a peristaltic pump 4, the temperature of the heat exchanger 1 in Transported towards the medium bag 2 and so ensures a constant negative pressure in the region of the heat exchanger 1.
  • the temperature control B is firmly connected via an inlet 7 and a return 8 with the medium bag 2.
  • the peristaltic pump 4 can be omitted or exchanged for corresponding valves at inlet 7 and return 8, in which case a repetitive compression of the medium bag 2 is necessary for the flow of the temperature control medium, for example by a roller or centrifugal pump.
  • the circulation circuit C ensures by means of a circulating pump 5 for a mixing of the temperature in the medium bag 2, so here a homogenization of the temperature of the medium is achieved, even if the temperature control is at a standstill.
  • the inlet 9 of the circulation circuit C is preferably located in the vicinity of the return line 8 of the temperature control circuit B, and the return line 10 of the circulation circuit C is preferably located in the vicinity of the inlet 7 of the temperature control circuit B in order to achieve sufficient swirling of the temperature control medium and good homogenization ,
  • the medium bag 2 can be attached between the heating or cooling elements 3, for example, to a temperature-conductive plate.
  • the temperature control system E has one or more filling openings, which can be located on the temperature control circuit 6a or on the circulation circuit 6b. Alternatively, such a filling opening would also be conceivable on the medium bag 2.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Urology & Nephrology (AREA)
  • Emergency Medicine (AREA)
  • External Artificial Organs (AREA)

Abstract

Appareil de régulation de température (D) comprenant un circuit utilisateur (A), un système de régulation de température (E) relié au circuit utilisateur (A) par un échangeur de chaleur (1), un système de chauffage ou de refroidissement (3) qui chauffe ou refroidit le système de régulation de température (E) à une température déterminée, l'invention étant caractérisée en ce que le système de régulation de température (E) est stérile, isolé et interchangeable.
PCT/EP2017/054717 2016-03-03 2017-03-01 Appareil de régulation de température à usage médical WO2017148984A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016103779.6A DE102016103779A1 (de) 2016-03-03 2016-03-03 Temperiergerät für die Medizintechnik
DE102016103779.6 2016-03-03

Publications (1)

Publication Number Publication Date
WO2017148984A1 true WO2017148984A1 (fr) 2017-09-08

Family

ID=58401531

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/054717 WO2017148984A1 (fr) 2016-03-03 2017-03-01 Appareil de régulation de température à usage médical

Country Status (2)

Country Link
DE (1) DE102016103779A1 (fr)
WO (1) WO2017148984A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231425A (en) * 1978-02-27 1980-11-04 Engstrom William R Extracorporeal circuit blood heat exchanger
EP0247989A2 (fr) * 1986-05-27 1987-12-02 Level 1 Technologies, Inc. Dispositif autonome et transportable pour chauffer un liquide physiologique
US4747826A (en) * 1983-06-08 1988-05-31 University Of Pittsburgh Rapid venous infusion system
EP0482858A2 (fr) * 1990-10-26 1992-04-29 Alcon Surgical, Inc., Système de contrôle de perfusion chirurgical
US5269749A (en) * 1992-05-08 1993-12-14 Cobe Laboratories, Inc. Heat exchange device for inducing cardioplegia
EP0676215A1 (fr) * 1994-04-04 1995-10-11 Haemonetics Corporation Appareil pour chauffer, filtrer et éliminer du gaz des fluides biologiques
WO2003055543A1 (fr) * 2001-12-28 2003-07-10 Gambro Lundia Ab Equipement de commande et procede pour un circuit sanguin extra-corporel
US20070197951A1 (en) * 2006-02-21 2007-08-23 Terumo Cardiovascular Systems Corp. Heater cooler valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231425A (en) * 1978-02-27 1980-11-04 Engstrom William R Extracorporeal circuit blood heat exchanger
US4747826A (en) * 1983-06-08 1988-05-31 University Of Pittsburgh Rapid venous infusion system
EP0247989A2 (fr) * 1986-05-27 1987-12-02 Level 1 Technologies, Inc. Dispositif autonome et transportable pour chauffer un liquide physiologique
EP0482858A2 (fr) * 1990-10-26 1992-04-29 Alcon Surgical, Inc., Système de contrôle de perfusion chirurgical
US5269749A (en) * 1992-05-08 1993-12-14 Cobe Laboratories, Inc. Heat exchange device for inducing cardioplegia
EP0676215A1 (fr) * 1994-04-04 1995-10-11 Haemonetics Corporation Appareil pour chauffer, filtrer et éliminer du gaz des fluides biologiques
WO2003055543A1 (fr) * 2001-12-28 2003-07-10 Gambro Lundia Ab Equipement de commande et procede pour un circuit sanguin extra-corporel
US20070197951A1 (en) * 2006-02-21 2007-08-23 Terumo Cardiovascular Systems Corp. Heater cooler valve

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