DE2407559A1 - Tissue heat treatment probe - has water cooling system which ensures heat development only in treated tissues - Google Patents

Tissue heat treatment probe - has water cooling system which ensures heat development only in treated tissues

Info

Publication number
DE2407559A1
DE2407559A1 DE19742407559 DE2407559A DE2407559A1 DE 2407559 A1 DE2407559 A1 DE 2407559A1 DE 19742407559 DE19742407559 DE 19742407559 DE 2407559 A DE2407559 A DE 2407559A DE 2407559 A1 DE2407559 A1 DE 2407559A1
Authority
DE
Germany
Prior art keywords
probe
tissue
cooling system
water cooling
heat treatment
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.)
Granted
Application number
DE19742407559
Other languages
German (de)
Other versions
DE2407559B2 (en
DE2407559C3 (en
Inventor
Joachim Dr Dreyer
Wolfgang Dr Hepp
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.)
Dornier System GmbH
Original Assignee
Dornier System 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 Dornier System GmbH filed Critical Dornier System GmbH
Priority to DE19742407559 priority Critical patent/DE2407559C3/en
Publication of DE2407559A1 publication Critical patent/DE2407559A1/en
Publication of DE2407559B2 publication Critical patent/DE2407559B2/en
Application granted granted Critical
Publication of DE2407559C3 publication Critical patent/DE2407559C3/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/02Details
    • A61N1/04Electrodes
    • A61N1/06Electrodes for high-frequency therapy

Abstract

A thermal probe is for use inside the body or for other applications where heat treatment of tissue is necessary. It has a water cooling system to prevent too great a surface temperature being developed. Internal antennae are connected via a coaxial cable to a microwave generator and are used to produce electromagnetic radiation which is disected to the tissue under treatment. Resistance thermometer points are used for temperature monitoring. The cooling water passes to the tip of the probe through a central tube and passes back close to the sides through a system of tubes surrounding the microwave antennae.

Description

Wörmesonde Die Erfindung betrifft eine Wärmesonde zur gezielten Applikation von Warmeenergie auf begrenzte Gewebebezirke. Thermal probe The invention relates to a thermal probe for targeted application of heat energy to limited tissue areas.

Es ist bekannt, zur Behandlung von Krankheiten Wörmeenergie zu verwenden. Soll diese Wörmeenergie nur bestimmte Körper- oder Gewebebezirke treffen, so werden besonders geformte Strahler verwendet, die meist ohne Beruhrungskontokt mit der Köperoberfläche Wärmestrchlen aussenden. Mit diesen Einrichtungen ist es nicht möglich, einen eng begrenzten Gewebebezirk zu treffen. It is known to use heat energy to treat diseases. Should this heat energy only hit certain areas of the body or tissue, so will specially shaped emitters are used, most of which have no contact with the Body surface emit heat streams. With these facilities it is not possible to meet a narrowly delimited tissue area.

Die Aufgabe der Erfindung besteht darin, eine Einrichtung zur gezielten Applikation von Wdrmeenergie auf begrenzte Gewebebezirke zu schaffen, wobei die umliegenden Gewebeflöchen unbeeinflußt bleiben. The object of the invention is to provide a device for targeted Application of thermal energy to create limited areas of tissue, whereby the surrounding tissues remain unaffected.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Sonde zur gezielten Applikation von Wärmeenergie auf begrenzte Gewebebezirke des Körpers, die eine Einrichtung zur Erzeugung elektromagnetischer Strahlung aufweist und deren dem Körper zugewondte Oberflache gekühlt ist. Die gekühlte Oberfldche kann auch in Berührungskontakt mit der Körperoberfläche stehen. Bereiche des Kdrpers, die unbeeinflußt bleiben sollen, werden durch die Kühlung auf ihrer normalen Temperatur gehalten oder sogar gekühlt, währand eng begrenzte Bereiche von Gewebebezirken, die einer Wärmebehondlung ausgesetzt werden sollen, genau treffer sind. Die Größe und Intensität des WärmeFelds und des KUhlfelds sind den Behandlungserfordernissen anpaßbar. This object is achieved according to the invention by a probe for targeted Application of thermal energy to limited tissue areas of the body that form a facility has for generating electromagnetic radiation and its facing the body Surface is cooled. The cooled surface can also come into physical contact with the body surface. Areas of the body that should remain unaffected, are kept at their normal temperature by the cooling or even cooled, very narrowly defined areas of tissue that are exposed to heat treatment should be, are exactly hit. The size and intensity of the heat field and the KUhlfelds can be adapted to the treatment requirements.

Bei einer weiteren vorteilhaften Ausführungsform der Erfindung ist die Sonde zum Einführen in Körperhöhlen stabförmig oder kugelig gestaltet und weist eine Kühleinrichtung auf. Die Einrichtung zur Erzeugung elektromagnetischer Strahlung besteht aus einer Hochfrequenzenergiequelle, die über Kooxkabel mit innerhalb der Sonde befindlichen Antennenstrahlern verbunden ist. In a further advantageous embodiment of the invention is the probe for insertion into body cavities is rod-shaped or spherical and has a cooling device. The device for generating electromagnetic radiation consists of a high-frequency energy source that is connected to the inside of the Probe located antenna radiators is connected.

Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der Erfindung ergeben sich aus der figur, die nachfolgend beschrieben ist. Further advantages, features and possible uses of the invention result from the figure which is described below.

Die einzige Figur zeigt eine Querschnittsansicht einer erz in dungsgemößen Wärmesonde 2 zur gezielten Applikation von Wärmeenergie auf begrenzte Gewebebezirke, Sonde 2 steht Uber ein Koaxkabel 4 mit einer nichtgezeigten Hochfrequenzenergiequelle in Verbindung. Im Inneren der Sonde 2 befinden sich zwei Antennenelektroden 6, 8 und eine Kühlwasserzuleitung 10, die mit einem Kuhlwassereinlauf 12 in Verbindung steht. Nahe dem Kopf 14 der Sonde 2 gelangt Kühlwasser 16 in einen Ringrau. 18 und von diese in einen Kuhlwasserablauf 20. Jeweils ein Teil der Antennenelektroden 6 und 8 liegt an der inneren Wandung 22 des Sondenschafts 24 an, während der andere Teil cm Mantel der KUhlwasserleitung 10 anliegt und von dieser mittels einer Isolierung 26 getrennt ist. The single figure shows a cross-sectional view of an ore in size Heat probe 2 for the targeted application of heat energy to limited areas of tissue, Probe 2 stands over a coaxial cable 4 with a high-frequency energy source (not shown) in connection. Inside the probe 2 there are two antenna electrodes 6, 8 and a cooling water supply line 10 which is connected to a cooling water inlet 12 stands. Cooling water 16 passes into an annular space near the head 14 of the probe 2. 18 and from this into a cooling water drain 20. Each part of the antenna electrodes 6 and 8 rests against the inner wall 22 of the probe shaft 24, while the other Part of the jacket of the KUhlwasserleitung 10 is applied and from this by means of an insulation 26 is separated.

Die Sonde 2 kann in verschiedenartigste Körperhöhlen eingefuhrt werden. Die Antennenstrahler 6 und 8 senden vorzugsweise Dezimeterwellen aus, die durch das die Antennenelektroden 6, 8 umgebende Wasser 16 auf ca. 1/8 ihrer Wellenlönge in Luft herabgesetzt werden. Im Gewebe beträgt die Wellenlönge ca. 8,5 cl. Anstatt der Dezimeterwellen können für besondere Anwendungsfulle auch Mikrowellen zur Anwendung gelangen. The probe 2 can be introduced into a wide variety of body cavities. The antenna radiators 6 and 8 preferably send out decimeter waves that go through the water 16 surrounding the antenna electrodes 6, 8 to about 1/8 of their wavelength be lowered in air. In the fabric, the wave length is approx. 8.5 cl. Instead of the decimeter waves, microwaves can also be used for special applications reach.

Anstatt des Wassers 16 können auch andere Kühlmittel verwendet werden.Instead of the water 16, other coolants can also be used.

Durch das Verhältnis von mittels der Antennenstrahler 6, 8 eingestrahlter Wärme zu der durch Kühlung mittels des Kühlmittelstroms 16 abgeleiteten Wärme kann das Tempercturmaximum in seiner Lage im Gewebe verschoben werden. Durch Variation der absoluten Betrage von eingestrahlter und durch Kühlung abgeleiteter Warme kann die Hohe des Tempercturmoximums eingestellt werden. By the ratio of radiated by means of the antenna radiator 6, 8 Heat to the heat dissipated by cooling by means of the coolant flow 16 can the temperature maximum can be shifted in its position in the tissue. By variation the absolute amount of radiated heat and heat dissipated by cooling the level of the temperature maximum can be set.

Die Kontrolle des Tempercturfeldes erfolgt während kurzzeitiger Unterbrechung der Energieeinstrahlung durch Messung der Oberflächentemperatur mittels Sensoren, z. 8. Thermowiderständen 28. The temperature field is checked during a brief interruption the energy irradiation by measuring the surface temperature using sensors, z. 8. Thermoresistors 28.

Die erfindungsgemäße Sonde 2 erzeugt ein Temperaturfeld, dessen Maximcltemperctur nicht an der Grenzfläche Sonde - Gewebe liegt, sondern im Inneren des Gewebes. The probe 2 according to the invention generates a temperature field, its maximum temperature is not located at the probe-tissue interface, but inside the tissue.

Claims (4)

Patantansorüche : Patantan references: Sonde zur gezielten Appplickation von Wärmeenergie auf begrenzte Gewebebezirke des Körpers von Lebewesen, gekennzeichnet durch eine Einrichtung zur Erzeugung elektromagnetischer Strahlung (6, 8), deren dam Körper zugewandte Oberfläche gekuhlt ist.Probe for the targeted application of thermal energy to limited areas of tissue of the body of living beings, characterized by a device for generating electromagnetic Radiation (6, 8) whose surface facing the body is cooled. 2. Sonde nach Anspruch 1, dadurch gekennzeichnet, daß ihre Oberflache om Körper anliegt und gekühlt ist. 2. Probe according to claim 1, characterized in that its surface rests on the body and is cooled. 3. Sonde nach AnsprUchen 1 bis 2, dadurch gekennzeichnet, daß sie zul Einführen in Körperhöhlen stabförmig oder kugelig gestaltet ist und eine Kuhleinrichtung (12, 10, 20) aufweist, und daß mittels Koaxkabel mit einer Hochfrequenzenergieuqelle in Verbindung stehende, in der Sonde befindliche Antennenstrahler (6, 8) elektromagnetische Energie abstrahlen. 3. Probe according to claims 1 to 2, characterized in that it Allow rod-shaped or spherical insertion into body cavities and a cooling device (12, 10, 20), and that by means of coaxial cables with a high frequency energy source related antenna radiators (6, 8) located in the probe electromagnetic Radiate energy. 4. Sonde nach AnsprUchen 1 bis 3, dadurch gekennzeichnet, daß an oder in ihre Sensoren (28) zur Kontrolle des Tempercturfeldes und zur Steuerung der applizierten Wärmamenge angebracht sind. 4. Probe according to claims 1 to 3, characterized in that on or in their sensors (28) for checking the temperature field and for controlling the applied amount of heat are appropriate.
DE19742407559 1974-02-16 1974-02-16 Heat probe Expired DE2407559C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742407559 DE2407559C3 (en) 1974-02-16 1974-02-16 Heat probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742407559 DE2407559C3 (en) 1974-02-16 1974-02-16 Heat probe

Publications (3)

Publication Number Publication Date
DE2407559A1 true DE2407559A1 (en) 1975-08-28
DE2407559B2 DE2407559B2 (en) 1981-04-16
DE2407559C3 DE2407559C3 (en) 1982-01-21

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