CN1096226A - Microwave energy acting device for medical use - Google Patents
Microwave energy acting device for medical use Download PDFInfo
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- CN1096226A CN1096226A CN 94105755 CN94105755A CN1096226A CN 1096226 A CN1096226 A CN 1096226A CN 94105755 CN94105755 CN 94105755 CN 94105755 A CN94105755 A CN 94105755A CN 1096226 A CN1096226 A CN 1096226A
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Abstract
The present invention relates to a kind of microwave energy acting device for medical use.This device is made up of air chamber or dielectric cavity that the microwave action cavity is built-in with array of temperature sensor.The sensor array strake is placed on top or the following or top and bottom that are applied object, and sensor array is made up of a plurality of temperature sensors that reticulate distribution.Adopt the present invention can be safely, effectively, easily control to medical science and biology biological sample carry out the microwave energy effect equably, satisfy medical science and biological needs.
Description
The present invention relates to a kind of microwave energy acting device for medical use, be applicable to medical science and biology biological sample accept the microwave energy effect equably.
Existing microwave oven and microwave heating equipment mostly include electromagnetic field agitator and weep hole and are applied the loading rotating disk that being heated evenly property of object is provided with for improvement, but because the distribution of microwave electromagnetic field is very inhomogeneous in the cavity, on heating object, produce the big temperature difference, cause heating uneven, this medical science and biology biological sample microwave energy be unallowed on.
Through retrieval, the radiating system of disclosed biological tissue or its analogies in PCT patent WO 80/01462, it is characterized in that it is a kind of human body, animal body and local or its analogies thereof to be carried out system in the space radiation thermotherapy of body, is applied object and is in the outer opening electromagnetic field of irradiator.Microwave energy acting device of the present invention then uses enclosed microwave multimode cavity, is applied object and is in the intravital enclosed type electromagnetic field of enclosed cavity.PCT patent WO 80/01462 the inside of biological tissue's outer surface, lesions position and near one or more temperature sensors are set respectively, each pick off is all outside irradiator.And array of temperature sensor of the present invention is in the cavity of sealing, and pick off and biological sample are surperficial closely to be contacted.PCT patent WO 80/01462 part in irradiator is filled with dielectric material, and its effect has: the heating directional diagram that changes irradiator to a certain extent by pre-provisioning request; Dwindle the irradiator size relatively; Make of the requirement change of the characteristic impedance of irradiator by the average characteristics impedance phase coupling of biological tissue.And the complete filling all around of the present invention's biological sample in the multimode cavity of sealing its objective is the electric size that increases cavity with the microwave low-loss dielectric layer, increases the model number that can keep in the multimode cavity, thereby improves the uniformity of microwave energy to the object effect.As can be seen, the present invention is different on structure, form and function with PCT patent WO 80/01462.
In U.S. Pat 4,884, in 580, announced the method that a kind of heat treatment therapeutic device and thermotherapy thereof are heated.It is a kind of device with the intravital cancerous tissue of electromagnetic wave therapy.Whole device partly is made up of microwave generator part, the control section and the microwave radiometer that comprise one to four controller.When treatment, irradiator is close on the outer surface at human body carninomatosis change position, on the contact surface between irradiator opening and the human epidermal circulating water cooling device is arranged.In the carninomatosis change zone within epidermis and in the path of recirculated cooling water temperature sensor is set, meter Intradermal carninomatosis becomes in the zone and the temperature of recirculated water in the gap of microwave treatment or in microwave treatment, by A/D conversion Input Control Element, compare with predetermined heating-up temperature, according to comparative result produce output controlled microwave source output and (or) rotating speed of water circulating pump, be heated regional temperature purpose within the specific limits to reach to keep.And microwave energy acting device for medical use of the present invention is applied in the microwave multimode cavity that biological sample is in a sealing, and microwave energy is produced by microwave power source, enters the microwave action chamber through overregulating the chamber.Above the biological sample that is applied in cavity or top and bottom are provided with the array of temperature sensor plate, and the sensor array output signal is by the output of Single-chip Controlling microwave power source.For improving the uniformity of microwave, around biological sample, fill with the microwave low-loss medium to the biological sample effect.This shows that the present invention and US 4,884,580 are different on irradiator form, action method and thermometric mode.
The disclosed medical microwave temperature measuring equipment of heating in Chinese patent CN 1080555A, it is characterized in that tissue being carried out space radiation at body with microwave antenna, heat, thermometric is integrated, microwave signal is passed through shunt, coaxial transmission line passes to a kind of temperature-sensitive aerial radiation and goes out, simultaneously by in the temperature-sensitive antenna, the temperature sensor senses heating region variation of temperature of forming by resistive conductor and critesistor of cross-over connection between the outer conductor, be converted into the change in voltage of critesistor, pass through coaxial transmission line, shunt is passed temperature control display unit back, output with the controlled microwave source, wherein shunt can separate microwave and direct current temperature signal, realizes non-interference temperature test.Its temperature sensor is not a plurality of, does not also form array.And microwave energy acting device for medical use of the present invention is characterized in that it being in the cavity of sealing biological sample to be carried out the microwave energy effect, like this spatial environments, electronic equipment and operator is not constituted radiation injury.Microwave energy is regulated the chamber by microwave power source by microwave and is entered the microwave action cavity, acts on biological sample.Meanwhile, measure the temperature of biological sample in real time by following or top or top and bottom that are arranged on biological sample and the array of temperature sensor that is attached at biological sample, and according to measurement result by the output control of chip microcontroller to microwave power source.For improving the uniformity of microwave energy, around biological sample, fill with the microwave low-loss medium to the biological sample effect.By as can be seen above, disclosed device is different in itself among the present invention and the CN 1080555A.
The disclosed microwave applicator that utilizes the leaky antenna energy regenerative in Chinese patent CN 86 1 03424A, disclosed high-frequency heating apparatus among Chinese patent CN 85 1 08199 A, though all be the material that utilizes in the microwave heating cavity, around biological sample, fill for the uniformity of improving microwave energy effect in the microwave action cavity but be different from the present invention, also be different from the present invention and in the microwave action cavity, have array of temperature sensor with the microwave low-loss medium.
In U.S. Pat 4, in 742,202, announced that a kind of applied microwave heats the device of packed liquid, circumference by pallet in the cavity in heating process and pump in the stir chamber liquid in the electromagnetic field and bag, realization even heating.Be different from the present invention and a microwave action cavity excitation mouthful position, serviceability temperature sensor array carried out the uniformity that the intelligent monitoring temperature is improved the microwave energy effect to biological sample by around biological sample, filling with microwave low-loss dielectric layer, optimization microwave adjusting chamber.
The object of the present invention is to provide a kind ofly to be built-in with the microwave energy acting device for medical use that the air chamber of array of temperature sensor or dielectric cavity are formed at the microwave action cavity, it is applicable to that medical science and biological sample accept the microwave energy effect equably.
The objective of the invention is to reach: the main medical microwave acting device that constitutes by microwave power source, temperature sensor, the microwave action cavity that is filled with dielectric material and intelligent temperature measurement temperature-controlling system by following measure.The feature of this device is that the microwave action cavity is built-in with array of temperature sensor, and placement is by the object of microwave energy effect on the sensor array strake.Sensor array is made up of a plurality of thermistor (temperature) sensor that is not subjected to microwave interference or optical fiber temperature-measurement pick offs that reticulate distribution.Another feature of this device be in the microwave action cavity array of temperature sensor and be applied object around be equipped with the microwave low-loss dielectric layer, to improve microwave energy to being applied the uniformity of object effect.The sensor array strake is placed on top or the following or top and bottom that are applied object.
Below in conjunction with accompanying drawing the present invention is elaborated:
Fig. 1 a-air chamber microwave energy acting device front view
Fig. 1 b-air chamber microwave energy acting device side view
Fig. 1 c-air chamber microwave energy acting device is gone into the bin gate front view
Fig. 1 d-air chamber microwave energy acting device is gone into the bin gate left view
Fig. 2 a-dielectric cavity microwave energy acting device axonometric chart
Fig. 2 b-dielectric cavity microwave energy acting device is gone into the bin gate axonometric chart
Fig. 2 c-dielectric cavity microwave energy acting device front view
Fig. 3-sensor array plate structure sketch map
Fig. 4-one chip microcomputer and Circuits System block diagram
Digital implication among the figure and effect are as follows:
1-microwave action cavity.Cavity of the present invention is pressed the multimode cavity design, except that the technology ensuring of design is the key that the intracavity uniform electromagnetic field distributes.Cavity is formed by copper coin silver soldering, and microwave energy is minimum to the chamber external leakage.
2-array of temperature sensor plate.The a plurality of temperature sensors that can work in microwave field 3 are installed on the plate.
The 3-temperature sensor.
4-accepts the biological sample of microwave energy effect.
5-is fastened into the screw that bin gate 9 contacts with microwave action cavity 1.The screw vertical fixing is welded on the microwave action cavity 1 among Fig. 1, and screw is fixed on the ring flange 15 among Fig. 2, and screw can rotate along perpendicular end axle.
The 6-clamp nut.Make into bin gate 9 and closely contact with doorframe.
The 7-microwave is regulated the chamber.Regulate micro-adjusting mechanism 8 and ensure that load is little to the echo of microwave power source, make microwave power source working stability, delivery efficiency height, and make microwave energy encourage microwave action cavity 1 most effectively.The lateral vertical of regulating the chamber is in microwave action cavity 1 excitation mouthful plane, and the excitation mouth is not in the microwave action cavity 1 excitation mouthful planar central authorities in place, and deflection microwave action cavity 1 adjacent two sides, to improve the uniformity that the intracavity electromagnetic field distributes.
The 8-micro-adjusting mechanism.Regulate the position of short-circuit plunger in microwave adjusting chamber 7, ensure that cavity is little to the microwave power source echo.
9-goes into bin gate.Going into bin gate is a side or the lateral part of microwave action cavity 1, and the air chamber of Fig. 1 also can adopt door shown in Figure 2.Door should contact well with doorframe, and is minimum to microwave action cavity external leakage to ensure microwave energy.
The 10-temperature sensor wires.
The outlet of 11-temperature sensor wires.
12-microwave energy input port.Be connected with microwave power source.
13-goes into bin gate fixing hole (groove).
14-air chamber array of temperature sensor board mount.
15-dielectric cavity ring flange.Be integral with microwave action cavity 1.
16-microwave low-loss dielectric layer.About in the of 4 the space with being applied object to be filled in sensor array.
The 17-choking structure.The width of choke groove should be able to ensure that going into bin gate 9 in certain frequency band reliably is electrically connected with microwave action cavity 1.
Accompanying drawing 1 and accompanying drawing 2 show two kinds of structural representations of microwave energy acting device of the present invention.Accompanying drawing 3 shows the structural representation of sensor array strake among the present invention, on the plate 2 by the temperature transducer 3 that reticulates distribution is housed, pick off should expose board plane in case be applied object surfaces and contact, sensor lead 10 is drawn by chamber wall aperture 11, is connected with single chip microcomputer system.Temperature sensing thinks that the use number of pick off in the device array and position select to determine according to the distribution of microwave power in specification requirement such as the size that is applied biological sample, shape, the maximum temperature difference that allowed and the cavity.
The microwave energy that is produced by microwave power source is regulated chamber 7 through the microwave of apparatus of the present invention and is acted on biological sample 4 in the cavity most effectively, utilize the array of temperature sensor in one chip microcomputer and the microwave energy acting device of the present invention, multi-section position to the object of accepting the microwave energy effect is carried out temperature detection simultaneously, and on demand effectively controlled microwave can action intensity and action time etc.
Medical science, biological biological sample are being subjected to microwave energy to do the time spent, and temperature required scarcely is very high, and requires good uniformity.The present invention is according to medical science, biological biological sample shape, size, factors such as microwave energy effect requirement, to the microwave cavity pattern, the structure of accent, microwave is regulated cavity configuration and the microwave action cavity is encouraged a mouthful position, biological sample choosing etc. of placement location and microwave low-loss thickness of dielectric layers in the microwave action cavity all made optimal design, and the biological sample of microwave the subject of knowledge and the object of knowledge effect is carried out multiple spot thermometric simultaneously by array of temperature sensor and single chip microcomputer system, and the control action by single chip microcomputer system realizes that biological sample accepts the intensity and the time of microwave energy effect, satisfies medical science and biological needs.
This device operation principle can describe in detail in conjunction with Fig. 4.
Be input to microwave through microwave energy input port 12 by the microwave energy that microwave power source produced and regulate chamber 7, make microwave energy encourage microwave action cavity 1 most effectively through micro-adjusting mechanism 8, microwave energy acts on biological sample 4 equably in cavity 1, biological sample 4 improves temperature owing to having absorbed microwave energy, temperature sensor 3 by the multi-section position changes temperature signal into the signal of telecommunication, again through amplifying and the A/D change-over circuit is input to one chip microcomputer and carries out temperature and show, and probe temperature and the temperature value by the keyboard setting in advance compared, one chip microcomputer is accepted the effect of microwave energy according to the output of comparative result by control circuit controlled microwave power source to realize biological sample by medical science and biological needs.
Adopt the present invention can be safe, effective, easy, economical, easily control to medical science and biology biological sample carry out the microwave energy effect equably, satisfy medical science and biological needs.
Claims (2)
1, a kind of microwave energy acting device for medical use, comprise microwave generator, irradiator and control system, it is characterized in that the microwave action cavity that this device adopts is built-in with array of temperature sensor, placement is by the object of microwave energy effect on the sensor array strake, sensor array is made up of a plurality of thermistor (temperature) sensor that is not subjected to microwave interference or optical fiber temperature-measurement pick offs that reticulate distribution, and the use number of pick off and position are according to the size that is applied biological sample in the array, shape, the distribution of microwave power is selected to determine in specification requirement such as the maximum temperature difference that is allowed and the cavity.
2, microwave energy acting device for medical use as claimed in claim 1, be equipped with the microwave low-loss dielectric layer around it is characterized in that the interior array of temperature sensor of microwave action cavity and being applied object, to improve microwave energy to being applied the uniformity of object effect, the sensor array strake is placed on top or the following or top and bottom that are applied object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94105755A CN1037325C (en) | 1994-05-30 | 1994-05-30 | Microwave energy acting device for medical use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94105755A CN1037325C (en) | 1994-05-30 | 1994-05-30 | Microwave energy acting device for medical use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096226A true CN1096226A (en) | 1994-12-14 |
| CN1037325C CN1037325C (en) | 1998-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94105755A Expired - Fee Related CN1037325C (en) | 1994-05-30 | 1994-05-30 | Microwave energy acting device for medical use |
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| CN (1) | CN1037325C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448812A (en) * | 2018-05-08 | 2019-11-15 | 河北亿邦医疗设备股份有限公司 | A kind of microwave heat therapeutic and temperature measurement integrated device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205169U (en) * | 1985-11-16 | 1987-01-28 | 复旦大学 | Microwave baker for therapy of the lymphedema |
| CN2046020U (en) * | 1988-05-27 | 1989-10-18 | 拉尔夫·E·伯格斯特烈沙 | Electromagnetic wave therapeutic apparatus |
| CN1021503C (en) * | 1989-05-09 | 1993-07-07 | 全体学术人员临时机构“评论” | Equipment for mircowave resonant treating |
| CN1022089C (en) * | 1991-05-04 | 1993-09-15 | “维特古克”生物物理与微波谐振疗法跨学科科技中心 | Microwave resonance therapeutic apparatus |
| CN1079408A (en) * | 1992-05-27 | 1993-12-15 | 哈尔滨工业大学 | Medical microwave effector |
-
1994
- 1994-05-30 CN CN94105755A patent/CN1037325C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448812A (en) * | 2018-05-08 | 2019-11-15 | 河北亿邦医疗设备股份有限公司 | A kind of microwave heat therapeutic and temperature measurement integrated device |
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| Publication number | Publication date |
|---|---|
| CN1037325C (en) | 1998-02-11 |
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