CN1021694C - Intra-Cavity radiator with sensible temp. device - Google Patents
Intra-Cavity radiator with sensible temp. device Download PDFInfo
- Publication number
- CN1021694C CN1021694C CN 91101430 CN91101430A CN1021694C CN 1021694 C CN1021694 C CN 1021694C CN 91101430 CN91101430 CN 91101430 CN 91101430 A CN91101430 A CN 91101430A CN 1021694 C CN1021694 C CN 1021694C
- Authority
- CN
- China
- Prior art keywords
- temperature detector
- transmission line
- irradiator
- adopts
- temperature sensitive
- 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.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000002560 therapeutic procedure Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 229950000845 politef Drugs 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 4
- 239000011888 foil Substances 0.000 abstract 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- -1 poly tetrafluoroethylene Polymers 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000000015 thermotherapy Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Radiation-Therapy Devices (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention relates to a human intra-cavity radiator with a temperature sensitive device, which is applied to a microwave therapy unit. The present invention comprises a concentric cable, a helical antenna, a temperature sensitive device, a metallic transmission line and a protective tube, wherein a piece of metallic foil is wound around the helical antenna; the temperature sensitive device is arranged in the intermediate position of the metallic foil, and the temperature sensitive device is jacked by a low loss medium; the filament metallic transmission line connected with the temperature sensitive device is led out from the intermediate position of the metallic foil in a helical mode, and the filament metallic transmission line is wound until the tail end of the protective tube. The utility model has the advantages of simple structure, favorable anti-interference performance and accurate measurement realization.
Description
The invention relates to microwave therapy apparatus, more particularly, is the human body intracavity irradiation about the band temperature detector that is used for microwave therapy apparatus.
Medical microwave radiator is a kind of vitals in the microwave therapy apparatus, and it is also referred to as medical microwave applicator or microwave heating electrode.Microwave radiometer is actually the Microwave Power Transmission that the therapy apparatus transmission line is presented and goes to the position that human body need be treated, carries out thermotherapy.
Henan tumour hospital institute is developed a kind of human body intracavity irradiation that has temperature detector.This microwave radiometer adopts helical antenna, lays semiconductor thermistor in antenna end, the lead-out wire welding enamel covered wire of critesistor, and this enamel-covered wire is drawn along the antenna axial direction straight line.The weak point of this microwave radiometer is that critesistor places the end of antenna, is difficult to accurately record the temperature that is heated the zone; The metal lead wire of critesistor and enamel-covered wire have influenced the radiation characteristic of antenna, and the thermometric performance of temperature detector has been disturbed in the radiation of antenna, can't carry out accurate thermometric.
The objective of the invention is to overcome the shortcoming of prior art, a kind of microwave radiometer of jamproof band temperature detector simple in structure is provided, it can measure the temperature of the pathological tissues of raying continuously, accurately.
Microwave radiometer of the present invention; the helical antenna, temperature detector, metal transmission line and the protecting tube that contain coaxial cable, metal forming winding; described temperature detector places on the centre position of metal forming; and with low-loss medium with its bed hedgehopping; the filament metal transmission line that connects temperature detector is drawn along spiral along the centre position of metal forming, is wound to the end of protecting tube always.
Above-mentioned temperature detector (3) preferably prescinds its lead-in wire if adopt negative tempperature coefficient thermistor; The filament metal transmission line that connects the critesistor lead-in wire is advisable to adopt high strength enamelled wire.
Above-mentioned temperature detector (3) is if adopt thermocouple, and then the thermode on the thermocouple just can be used as the metal transmission line use.
Above-mentioned metal forming (2) is advisable to adopt silver-plated Copper Foil; Above-mentioned low loss dielectric is then to adopt politef to be advisable.
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is the structural representation of microwave radiometer of the present invention.
In the drawings, (1) is the inner wire of antenna, and (10) are dielectric layers, and they are that coaxial cable (5) is peelled off metallic conductor and the dielectric layer that stays behind the screen layer, and its length is decided on the size of focal zone.On medium (10), the metal forming (2) of the narrow strip that width is about 5 millimeters, for example silver-plated Copper Foil by certain pitch, for example 6.5 millimeters, is wrapped on the section of stripping out tightly.In metal forming (2) and coaxial cable (5) screen layer intersection, both weld, and with poly tetrafluoroethylene the helical antenna that makes are tightly wrapped then.
Temperature detector (3) is placed on the centre position of metal forming (2), and temperature detector (3) can be one or more as required, and present embodiment adopts 3.Temperature detector (3) can be a critesistor, also can be thermocouple.Present embodiment adopts the critesistor of negative temperature coefficient.At first; the lead-in wire of critesistor is cut short; for example cut to 2 millimeter; the filament high strength enamelled wire (4) of burn-oning then then places critesistor the middle of metal forming (2), makes the middle part of high strength enamelled wire (4) along metal forming (2) thereafter; draw along the spiral winding; and enter coaxial cable (5) afterwards leaving helical antenna, and still continue to adopt spiral way to twine, cause the end of irradiator protecting tube (6) always.The length of protective casing (6) is decided on the position of focus.After this, enamel-covered wire and shielded multiconductor cable (7) join, and after this shielded cable (7) is collected to the signal transmssion line of temperature detector (3) on the multiway adapter (9), and the other end of coaxial cable (5) is connected to radio frequency connector (8).
In order to improve heat conducting speed between tested tumor and the temperature detector (3), between temperature detector (3) and antenna, use a low loss dielectric, poly tetrafluoroethylene for example is with temperature detector (3) bed hedgehopping.About 1 millimeter of the width of the politef of present embodiment.
On helical antenna and temperature detector, again it is tightly wrapped with poly tetrafluoroethylene.With pocket knife the poly tetrafluoroethylene on the temperature feeling ball is scratched afterwards, expose temperature feeling ball.
At last, use gumming device, about 0.3 millimeters thick of one section impregnation of helical antenna and about 700 millimeters long of coaxial cable, as the protecting tube (6) of irradiator.Certainly this protective casing also can directly make silicone rubber sleeve, teflon sleeve etc.
The present invention compared with prior art has the following advantages:
1, radiating antenna and temperature detector are integrated, and be easy to use.
2, the radiation of microwave antenna and temperature detector thermometric are independent of each other, and make microwave radiator of the present utility model have very strong anti-interference performance.
3, simple in structure, be easy to make.
Claims (7)
1, a kind of intracavity irradiation that is applied to the band temperature detector in the microwave therapy apparatus; the helical antenna, temperature detector, metal transmission line and the protecting tube that contain coaxial cable, metal forming winding; it is characterized in that; described temperature detector [3] places on the centre position of metal forming [2]; and with low-loss medium with its bed hedgehopping; the filament metal transmission line [4] that connects temperature detector [3] is drawn along spiral along the centre position of metal forming [2], is wound to the end of protecting tube [6] always.
2, irradiator as claimed in claim 1 is characterized in that, described temperature detector (3) adopts the negative tempperature coefficient thermistor that has prescinded lead-in wire.
3, irradiator as claimed in claim 2 is characterized in that, described filament metal transmission line (4) adopts high strength enamelled wire to be connected with the lead-in wire of critesistor.
4, irradiator as claimed in claim 1 is characterized in that, described temperature detector (3) adopts thermocouple.
5, irradiator as claimed in claim 4 is characterized in that, described metal transmission line (4) adopts the thermode of thermocouple as transmission line.
6, irradiator as claimed in claim 1 is characterized in that, described metal forming (2) adopts silver-plated Copper Foil.
7, irradiator as claimed in claim 1 is characterized in that described low loss dielectric adopts politef.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101430 CN1021694C (en) | 1991-03-14 | 1991-03-14 | Intra-Cavity radiator with sensible temp. device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101430 CN1021694C (en) | 1991-03-14 | 1991-03-14 | Intra-Cavity radiator with sensible temp. device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1064624A CN1064624A (en) | 1992-09-23 |
| CN1021694C true CN1021694C (en) | 1993-07-28 |
Family
ID=4905084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101430 Expired - Fee Related CN1021694C (en) | 1991-03-14 | 1991-03-14 | Intra-Cavity radiator with sensible temp. device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021694C (en) |
-
1991
- 1991-03-14 CN CN 91101430 patent/CN1021694C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1064624A (en) | 1992-09-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |