CN1019886C - Screw medical microwave radiator - Google Patents
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- CN1019886C CN1019886C CN 90106763 CN90106763A CN1019886C CN 1019886 C CN1019886 C CN 1019886C CN 90106763 CN90106763 CN 90106763 CN 90106763 A CN90106763 A CN 90106763A CN 1019886 C CN1019886 C CN 1019886C
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Abstract
The present invention belongs to medical microwave radiator technology. A series of spiral radiators are designed by the present invention in order to adapt to the therapy position. Each radiator is a direct contact type, and thus, environmental pollution caused by microwaves can be reduced. Meanwhile, some of the radiators designed according to therapy requirements can evenly irradiate a pathologic change region and some of the radiators can strengthen radiation for the pathologic change region, which has actual meaning in clinical medicine. The present invention has four kinds of spiral radiators: 1. a plane spiral body cavity, a concave surface spiral body cavity or a body surface type radiator; 2. a spiral body cavity type radiator with a rod compounded cylinder; 3. a spiral body cavity type radiator with an acicular compound cone; 4. a slim flexible body cavity radiator.
Description
The invention belongs to the medical microwave radiator technology.
Medical microwave radiator is microwave therapy apparatus important composition parts, and its function is the microwave energy that transmission line is presented to be radiated human body pathological tissues to be treated position get on.
About performance, type and the characteristic of medical microwave radiator, in volumes such as " medical microwave technology " Chen Daizhu, National Defense Industry Press's in November, 1987 front page, chapter 3 is at length discussed in the book.Wherein the screw type irradiator of Jie Shaoing has the circular polarisation conical horn type irradiator of spiral monopole, spiral media monopole, cylindrical screw irradiator, spiral excitation, the helical antenna irradiator of band reflector.Above-mentioned screw type irradiator is cylindrical equidistant spiral radiator.Irradiator for Celomic type, this book has been narrated spiral media monopole composite irradiator, ties up to outer cup one deck politef low loss dielectric of cylindrical helical antenna, for the ease of inserting in the body cavity, the antenna head medium is tapered, and the head front end is hemispherical.This irradiator has been clinical to be used for directly inserting intrauterine and to artificially induce abortion and treat diseases such as cervicitis, uterus tumor.
In clinical practice,, require enough microwave energy density uniform irradiations to whole pathological tissues in order to obtain satisfied curative effect.The shape of irradiator and size should adapt with the diseased region situation.The power that irradiator applied is guaranteeing that the radiant intensity that clinical efficacy should make medical personnel be subjected to simultaneously is reduced in the Min..Satisfying these requires the more and more employing contact of current micro-wave therapeutic radiation promptly to comprise radiation in the body cavity.
Be used for endoceliac spiral media monopole composite irradiator and belong to cylindrical equidistant helical antenna, terminal is the most weak in that antenna top is the strongest to extraradial intensity from the face of cylinder, and obviously this can not make whole pathological tissues be subjected to microwave irradiating therapeutic uniformly.
In order to adapt to the needs of different parts lesions treatment, the irradiator that different size shape will be arranged is for clinical use.But above-mentioned helical antenna is the growing demand of cylindrical incompatibility micro-wave therapeutic far away, will have various medical microwave radiators to produce along with clinical demand.
The space length irradiation body phenotype irradiator of present clinical use, the helix irradiator of for example above-mentioned band reflector is to the free space radiation microwave energy, form the therapentic part that the Free Electromagnetic ripple propagates into human body again, under the clinical efficacy condition identical with body surface contact irradiator, the power that this irradiator need apply is quite big.Under the certain condition of microwave machine output, the irradiator bore is big more, and is more little by Department of Radiation potential energy metric density, if when the radius of an irradiator bore is three times of another irradiator, its energy density is other person's 1/9th.Far away more apart from therapentic part when irradiator, the energy density of therapentic part is more little.Square being directly proportional of the ball surface that we know ball awl and the radius of a ball, if irradiator doubles to position to be treated distance, other condition is constant, energy density is left original 1/4th.As seen the space radiation device is changed into body surface contact irradiator, then the irradiator microwave power that need provide only is tens of a space radiation device/reaching same therapeutic effect, simultaneously reduced the microwave scattering of space radiation device significantly, reduced the pollution of microwave environment to environment space.Adopting body surface contact irradiator is the developing direction of current micro-wave therapeutic.
Purpose of the present invention: for the position with treatment adapts, designed the irradiator of different spiral forms, these irradiators are direct contact type, can reduce the pollution of microwave like this to environment, simultaneously according to the designed irradiator that requires for the treatment of, what have can be more equably to the lesion region radiation, and what have can add intense radiation to lesion region, and these have realistic meanings in clinical medicine.
Our the screw type irradiator of design is body surface contact or Celomic type.Have different shapes and size dimension according to clinical demand irradiator, directly touch the pathological tissues position to satisfy irradiator.
One. what a kind of screw type body surface contact that is used for micro-wave therapeutic or Celomic type irradiator is characterized in that spiral (4) is shaped as plane or concave surface, its pitch is for equidistantly or not equidistant, and inlay or set off on skeleton (3), also be furnished with housing (2) and cover (5).
The microwave main radiation direction of plane or the spiral irradiator of concave shape is this plane or concave surface dead ahead, can make body surface contact or Celomic type, spiral (4) is coiled into plane or concave, its pitch is for equidistantly or not equidistant, this will require the uniformity coefficient of irradiator to change pitch according to lesion region, make it to satisfy clinical demand.Spiral (4) adopts the silver-plated material of red copper to make, and inlays or set off on skeleton (3), is planar shaped or concave shape for guaranteeing spiral (4), requires the face of skeleton (3) support helix (4) to coincide with the designed shape of spiral (4).People always wish the dead ahead radiation of microwave to spiral (4), so in the other end of skeleton (3) is that the back side is equipped with housing (2), adopt metal materials such as aluminium alloy or copper to make, and be connected with the outer conductor of coaxial wire, like this can the concentrated dead ahead of microwave energy to.In order to guarantee between spiral (4) and pathological tissues changeless relative distance is arranged, cover on spiral (4) being furnished with cover (5) on the irradiator, and seal with housing.Skeleton (3) and cover (5) are all made with polytetrafluoroethylmaterial material.
Body surface contact round screw thread irradiator is as figure one.Spiral (4) is coiled into plane or concave surface, and is rounded, and is embedded on the circular skeleton (3) with spiral line of rabbet joint, and spiral (4) links to each other with inner wire (6), is connected with the inner wire of coaxial wire through cable block (7).Be furnished with in the behind of skeleton (3) that housing (2) is spill and outer conductor (1) is one, be connected with the outer conductor of coaxial wire through cable block (7).Irradiator is furnished with cover (5) and is truncated conical shape, and cover (5) and skeleton (3) will coincide, with the body surface contact surface be plane or concave surface, the variform demand of body surface when adapting to clinical treatment.Cover (5) and housing (2) are connected and seal through locknut.
Gynecological's special-purpose Celomic type round screw thread irradiator is as Fig. 2.This irradiator can be used for treating gynecological diseases such as cervical erosion.Spiral (4) is coiled into plane or concave surface, and is rounded, and is embedded on the skeleton (3) with spiral line of rabbet joint, and skeleton (3) back is furnished with housing (2), and is spill and links to each other with outer conductor (1).Irradiator is furnished with its end face of cover (5) (9) and is spill, also can be plane or hemispherical, and this inner end (9) is spill and designs for the shape need that satisfies cervix uteri stomatosis change position just.Be furnished with supporter (8) according to gynecological's handling characteristics equally and be long tubular, make with plastic material, the one end is connected with cover (5) and seals, and the other end is connected with cable block (7), and inner wire (6) and outer conductor (1) are contained in the supporter (8) and are connected with cable block (7) respectively.
Thin type body surface contact snail irradiator is as Fig. 3.Spiral (4) is coiled into planar rondure, also can coil into the plane of other shape, for example ellipse, rectangle, square, triangle, polygon.Select silver plated strip material of red copper or wire rod for use, set off on the skeleton (3) in flat sheet, the another side of skeleton (3) is furnished with housing (2) and makes with aluminum alloy materials, is tabular but can inlays skeleton (3).Irradiator is furnished with cover (5) and is tabular, covers on spiral (4), and is fixed into one with housing (2).Spiral (4) will be connected with the inner wire of cable.
The spiral of above-mentioned Fig. 1, Fig. 2, Fig. 3 (4) can select for use the politef copper clad plate to make with photomechanics when being flat shape.Because the spiral (4) that copper clad plate is made is very thin littler than the power capacity that coils the spiral of making (4) with strip material or round wire under the same band condition.
Two. a kind of cylindrical screw type Celomic type irradiator that is used for micro-wave therapeutic, be furnished with sheath (11) and support housing (13), the pitch that it is characterized in that spiral (12) is not for equidistant; Or rod (14) combined tessera its pitch of cylindrical spiral (12) on skeleton (10) is for equidistantly or not equidistant, when the diameter of cylindrical spiral (12) can be unworthy of support housing (13) less than 10mm.
Bar-shaped composite cylindrical spirillum cavate irradiator is as Fig. 4.Rod (14) is connected with cylindrical spiral (12) top, all adopts the silver-plated material of red copper to make.The irradiator of this rod (14) composite cylindrical spiral (12) has changed the isometric circle cylindricality helix radial radiation shortcoming of skewness vertically.Comparable because of isometric circle cylindricality spiral radiator axial dimension and wavelength, radio-frequency field is because the radiation loss influence, and the big terminal in radiation profiles top is little, so the irradiator radial radiation weak skewness of the strong terminal in top vertically.The method of sort this problem out is that the thin terminal in helix coiled top is close, and promptly the coiled unequal distant screw to reduce the top radiant intensity, is strengthened the terminal radiant intensity.Helix coiling density degree is decided according to top and terminal radiation difference.For top easy to process helix is dredged into a circle, and smooth out with the fingers straight a bar-shaped lead, rod (14) top constitutes the coupling coaxial transmission line with supporter (13), and excellent (14) terminal is connected with spiral (12).The diameter of terminal rod can gradual change or sudden change, and the structure of such rod (14) composite screw (12) can be mated with coaxial transmission line preferably.The pitch of spiral (12) can adopt equidistantly or be not equidistant.Above-mentioned these design principles and method all can make the radial radiation of this irradiator be tending towards evenly satisfying clinical needs.General spiral (12) adopts equidistant helically coiling, makes skeleton (10) like this and is easier to.
Spiral among Fig. 4 (12) is embedded in to have on the cylindrical skeleton of spiral fluted (10), and skeleton (10) is made with polytetrafluoroethylmaterial material, and rod (14) penetrates skeleton (10) axle center, and terminal is connected with the top of spiral (12).Is furnished with support housing (13) at the top of this irradiator, make with the silver-plated material of copper, its effect is that support frame (10) is connected with cable block (7) with sheath (11) and with the top part formation coupling coaxial transmission line of rod (14), and support housing (13) is connected with the outer conductor of coaxial wire through cable block (7).Irradiator is furnished with sheath (11), make with polytetrafluoroethylmaterial material, to constitute the irradiator sealing, be convenient to clinical use after sterilization clean, be hemispherical so that insert at the front end of sheath (11).
If this irradiator is to insert in the narrow body cavity, its diameter≤10mm, for example, nasal cavity, can be unworthy of support housing (13), directly remove one section cable plastics sheath and outer conductor, be wound directly around on the medium outer surface that supports inner wire, make cylindrical unequal distant screw irradiator with inner wire with coaxial wire.In like manner peel off one section cable cover(ing) and outer conductor on this irradiator again, just make rod (14) composite cylindrical spiral radiation antenna, its pitch is for equidistantly or not equidistant.Outside at this active antenna seals with polytetrafluoroethylmaterial material, so that use the back sterilization to clean.
Three. a kind of screw type Celomic type irradiator that is used for micro-wave therapeutic is characterized in that spiral (17) is embedded in and has spiral fluted skeleton (16), skeleton surface (18) is the taper quadratic surface, spiral (17) extends to form needle-like antenna (15) forward after being wound into the vertex of a cone of skeleton (16), also is furnished with supporter (19) and sheath (20).
The characteristics of this spiral radiator are that skeleton (16) vertex of a cone and needle-like antenna (15) root have than high radiation field.As Fig. 5, this class irradiator is specifically designed to the disease of treatment woman uterus oral area position, and needle-like antenna (15) is directly to insert in the cervical canal to form the optimal radiation therapy of cervix uteri mouth when clinical.Needle-like composite conic spiral body cavity irradiator has than intense radiation at the vertex of a cone and needle-like root, is that the needle-like antenna also is that the root field is the strongest because the radio-frequency field that conical spiral antenna produces is concentrated at vertex of a cone position.The event vertex of a cone is that cervix uteri mouth position has strong microwave radiation, because needle-like antenna (15) inserts the internal energy interior pathological tissues of cervical canal of taking into account of cervical canal good radiation therapy is arranged.
Needle-like composite conic spiral body cavity irradiator is as Fig. 5.Spiral (17) is embedded in to have on the spiral fluted skeleton (16), the surface (18) that spiral (17) is coiled in skeleton (16) is the taper quadratic surface, to be spiral (17) rotate formed curved surface around the axis of symmetry of skeleton (16) is quadratic surface, it is shaped as taper, and this helicla flute need be used lathe in machining.Spiral (17) is wound into the vertex of a cone of skeleton (16), extends to form needle-like antenna (15) forward along vertex of a cone direction.Irradiator is furnished with supporter (19) and is connected with outer conductor (1) and is integral, and its effect is support frame (16) and makes radio-frequency field to previous irradiation.It is hermetically sealed this needle-like antenna (15), spiral (17), supporter (19), interior condition (6), outer conductor (1) that it also is furnished with sheath (20), and keep the shape of primary antenna profile.Needle-like antenna (15) and spiral (17) adopt the silver-plated material of red copper, and are connected with inner wire (6), and metal materials such as supporter (19) employing copper are made, and skeleton (16) and sheath (20) adopt polytetrafluoroethylmaterial material to make.
Also can not contain needle-like antenna (15) according to this irradiator of clinical instructions for use, become cone-type spiral Celomic type irradiator, still have stronger microwave radiation at vertex of a cone position.
Four. a kind of thread like body cavate irradiator that is used for micro-wave therapeutic, its length≤2 λ, outer surface at wire antenna (22) is done the soft support of medium (21) with polytetrafluoroethylmaterial material, it is characterized in that being wound with helical shield band (25) at the outer surface of the soft support of medium (21), or be with shroud sleeve (26), its axial length that hides wire antenna (22) and wire antenna (22) axially microwave radiation are directly proportional, thereby make to become evenly that the outside of antenna seals with polytetrafluoroethylmaterial material along antenna axis direction microwave radiation.
When wire antenna physical dimension and wavelength comparability were intended, the distribution of the diameter of axle to the microwave radiation field along the line was uneven, as shown in Figure 7, and the wire antenna microwave field of the different length difference that distributes vertically.For example, the wire antenna that λ/4 is long, top is strong and a little less than the terminal.And the long wire antenna in λ/2, top and terminal weak center place are strong.Obvious this antenna can not carry out uniform radiation to lesion region, in order to solve this heterogeneous radiation problem, have the characteristic of shielding radio-frequency field according to outer conductor, the antenna axial direction length that mask tape (25) around wire antenna or shroud sleeve (26) are hidden is directly proportional with antenna radial radiation intensity.The section that radiant intensity is big, shield size is bigger, makes suitable the weakening of radiant intensity of this section get off, on the contrary the less not even shielding of shield size, this section area radiation intensity is regulated to some extent, like this because the effect of shielding just makes microwave radiation distribution vertically be tending towards even.
In order to achieve the above object, we can peel the plastic sheath of coaxial wire and outer conductor off, and the remaining soft support of PTFE medium (21) and the thin straight silver plated inner wire of red copper are wire antenna (22).When the length lambda/4(physical length of wire antenna (22) is about λ/4, to be people represent the usage of antenna length with wavelength dimension for this, so this description and claim also adopt this usage in requiring.), an available silver-plated thin slice of wedge shape red copper (23) is connected at the cylindrical spiral of outer disk coiled (25) of the soft support of medium (21) and with the coaxial wire outer conductor, as shown in Figure 6.Length lambda/2 when wire antenna (22), the silver-plated thin slice of the pointed red copper of an available both-end (24), be coiled into cylindrical spiral (25) at the strong position of the central microwave field of wire antenna (22) equally, it and the former's difference be the top of this antenna and terminal bay around spiral (25) institute dead area more sparse, and that cover the middle part is denser.In like manner length 3 λ/4 of wire antenna (22) can be coiled in the strong position of wire antenna root microwave field with a wedge shape thin slice (23) earlier, and the pointed thin slice of reuse one both-end (24) is coiled in the stronger position of next microwave field.Length 1 λ of wire antenna (22), available two pointed thin slices of both-end (24) are coiled in the strong position of two microwave fields successively, the length of wire antenna (22)＞1 λ and≤kind and the quantity of 2 λ time coiling mode and used thin slice (23), thin slice (24) analogizes as described above, referring to Fig. 9.Antenna after the coiling all seals with the guard shield that polytetrafluoroethylmaterial material is made.That this irradiator has is elongated, flexible, external spiral, the feature that is evenly distributed of microwave radiation radially.If along the strong excessively place of antenna axial direction radiation, suppress the radiation of this section antenna with 3～25 silver plated metal sleeves of thin red copper (26) segmented sheathing.The external diameter suit that the internal diameter of the sleeve shown in Fig. 8 (26) equals the soft support of medium (21) coincide, the sleeve wall thickness is 0.1mm, sleeve (26) length can be isometric can be not isometric yet, for example can be made into the sleeve that length is 2mm, 4mm, 6mm, 8mm, 10mm (26) and select for use, also other value.The distance between the sleeve (26) of institute's suit can be equidistantly or not equidistant in the soft support of medium (21) like this.This method that applies sleeve (26) also can be improved the inhomogeneities of the radial radiation of irradiator.Encapsulation process is carried out with polytetrafluoroethylmaterial material equally in outside at irradiator.The former flex capability is good in (26) two kinds of schemes of above-mentioned external spiral (25) and sleeve.Latter's convenient processing and debugging.
We deserve to be called the irradiator of stating is elongated flexible body cavity irradiator, its carefully in other words the diameter of cable be exactly the irradiator diameter substantially; It is long more much longer than general monopole antenna; Its flexibility is basic the same with cable soft.So this irradiator can be used for the treatment of esophagus disease.
Screw type irradiator of the present invention has four types, they are body surface contact and Celomic type, it is compared with the space radiation device at the microwave pollution of guaranteeing to have reduced significantly under the radiant energy density condition of clinical efficacy necessity to environment, reduced the radiation to normal structure, these have very significance in clinical medicine.
Plane or concave surface spiral radiator can be made body surface contact or Celomic type, and thin type body surface contact irradiator can place long-term bed to be difficult to stand up under mobile patient's body and treat patients with decubitus.Hand-held that radiation is carried out at body surface position to be treated is just very convenient and this class body surface contact irradiator of Fig. 1 can allow the patient, the treatment of for example postoperative wound healing acceleration, it has the effect of alleviating wound pain concurrently, achieve good results through clinical examination, patient feels comfortably cool, wound pain alleviates, and does not find to have any pair of effect.Special-purpose Celomic type plane of gynecological or concave surface round screw thread irradiator treatment cervical erosion clinical effectiveness are fine.
Bar-shaped composite cylindrical spiral radiator is compared with spiral media monopole irradiator, because the former has increased rod (14) shape structural change only is the inhomogeneities of cylindrical equidistant helical structure radiation field, receive good effect in the clinical treatment vaginitis, patient pleases oneself.
Needle-like composite conic spirillum cavate irradiator, since stronger at the vertex of a cone and needle-like antenna root position radiation field, have the huge advantage that cervix uteri tube wall pathological changes demonstrates this radiation field distribution concurrently for treatment cervix uteri stomatosis trouble.
Elongated flexible body cavity irradiator has the uniform characteristics of radiation field distribution, and compare effective cascade unit with monopole antenna big, and is flexible good, is particularly suited for illness treatment in the human body esophagus.
In sum, screw type medical microwave radiator of the present invention is a kind of multifunctional series microwave radiometer, in theory and practice, solved the radiation field of aerial problem of micro-wave therapeutic clinical efficacy, guaranteeing that the necessary energy density of clinical efficacy has reduced the microwave machine output under requiring, minimizing is to the microwave irradiation of normal structure, reduced microwave pollution, very significance has been arranged in clinical medicine environment space.
Fig. 1 body surface contact planar rondure spiral radiator sketch map.
Fig. 2 gynecological special-purpose Celomic type planar rondure spiral radiator sketch map.
Fig. 3 thin type body surface contact planar rondure spiral radiator sketch map.
The bar-shaped composite cylindrical spirillum of Fig. 4 cavate irradiator sketch map.
Fig. 5 needle-like composite conic spirillum cavate irradiator sketch map.
Fig. 6 elongated flexible external spiral Celomic type irradiator sketch map.
Fig. 7 wire antenna is the microwave radiation scattergram radially.
Provided wire antenna (22) radiation intensity distribution of eight kinds of different lengths among Fig. 7.Wherein: l wire antenna (22) axial location coordinate.
The s microwave radiation.
Fig. 8 elongated flexible sleeve Celomic type irradiator sketch map.
Provided sleeve (26) the assembling sketch map of eight kinds of different length elongated flexible sleeve Celomic type irradiators among Fig. 8.
The required thin slice of wire antenna (22) (23) of eight kinds of different lengths of Fig. 9, thin slice (24) kind and bar are counted sketch map.
λ in description and the accompanying drawing represents wavelength.
Body surface contact round screw thread irradiator:
The diameter 20mm to 60mm of round screw thread (4), pitch 2mm to 8mm, skeleton (3) is plane or concave surface for circle, and on this face, process helicla flute, housing (2) and outer conductor (1) are made into one, it highly is λ/4, form the dead ahead that microwave radiation field points to irradiator, cover (5) is round platform and contacts with body surface, spiral when guaranteeing clinical treatment (4) keeps relative distance constant with body surface, the outside of cover (5) is that plane or concave surface are to coincide in order to have preferably with body surface, and inner face should coincide with skeleton (3), and the height of round platform is 10mm to 25mm.Cover (5) seals with locknut tension and realization with housing (2).As following example:
1. the rounded concave surface of spiral (4), its diameter is 60mm, and pitch is not for equidistant, and the center is 8mm, and the edge is 3mm, linear change, cover (5) is concave surface with the body surface contact surface, and frustum cone height is 25mm.
2. the rounded plane of spiral (4), its diameter is 50mm, and its value of uniform pitch is 3mm, and cover (5) is the plane with the body surface contact surface, and frustum cone height is 20mm.
3. the rounded plane of spiral (4), its diameter is 20mm, and its value of uniform pitch is 2mm, and cover (5) is the plane with the body surface contact surface, and frustum cone height is 10mm.
The diameter of housing (2) according to the outside diameter of spiral (4) design determine its size, the line footpath of spiral (4) determines according to the irradiator power capacity, is 60mm as the round diameter of spiral (4), line is 1.5mm directly, applies power≤60 watt.
The special-purpose Celomic type circular radiator of gynecological:
Irradiator length L=120mm to 200mm, diameter of phi=25mm to 40mm, the irradiator head diameter is the grenade shape greater than supporter (8), inner wire (6) and outer conductor (1) are made with copper material is silver-plated, and satisfy transmission line 50 Ω characteristic impedance requirements, and its effect is that microwave energy is transferred to spiral (4) antenna, housing (2) is spill and fuses with outer conductor (1), optional 1～the 1.5mm in line footpath of spiral (4), the number of turns＜5 circles, pitch is 2mm to 4.5mm.Following example:
1.L=200mm, Φ=40mm, spiral (4) is circular concave surface, and pitch is not for equidistant, and the center is 4.5mm, edge 2mm, linear change, the number of turns＜5 circles, end face (9) is concave surface.
2.L=170mm, Φ=32mm, spiral (4) is a circular flat, pitch is equidistant 3mm, the number of turns＜5 circles, end face (9) is the plane.
3.L=120mm, Φ=25mm, spiral (4) is a circular flat, pitch is equidistant 2mm, the number of turns＜4 circles, end face (9) is hemispherical.
Thin type body surface contact snail irradiator:
Snail (4) can be made into square, rectangle, ellipse, triangle, polygon, the general circle that adopts.Example is as follows:
1. make planar rondure spiral (4) with the silver plated strip line of red copper, set off on plane skeleton (3), the width of strip line is 5mm, and its value of uniform pitch is 10mm, and effective radiating area is 80cm
2, the thickness≤15mm of irradiator.As Fig. 3.
2. be embedded on the plane skeleton (3) with helical flute with the silver-plated round wire rod of red copper, spiral (4) is plane square, and pitch is not for equidistant, and the center is 10mm, and the edge is 3mm, and linear distribution, line directly are 1.5mm, and effective radiating area is 225cm
2, the thickness≤15mm of irradiator.
Above-mentioned irradiator is made snail (4) and skeleton (3) if the snail formula then can adopt the polytetrafluoroethylmaterial material copper clad plate with the mask-making technology of taking pictures.
Cylindrical screw type Celomic type irradiator:
1. cylindrical unequal distant screw Celomic type irradiator as columniform diameter＞10mm, can be manufactured the cylindrical skeleton (10) with unequal distant screw line of rabbet joint, its pitch is 4.5mm to 2mm, linear distribution, the length≤110mm of skeleton (10), line directly are 1mm to 1.5mm.As columniform diameter≤10mm, it is manufactured and can select coaxial wire for use, the cable plastics sheath and the outer conductor of this line are peelled off, inner wire is transferred to from the soft support of medium, and keep the soft support of this section medium as skeleton (10), and inner wire is coiled on the outer surface of the soft support of medium by not equidistant form, its pitch is 4mm to 2mm, linear distribution, the number of turns 5 to 20 circles.Example is as follows:
With SFB-50-5 coaxial radio frequency cable line, its pitch top is 4mm, and terminal is 2mm, and linear change, the number of turns are 12 circles, and this irradiator is unworthy of housing (13), its outside polytetrafluoroethylmaterial material encapsulation process of using.
2. the equidistant spirillum cavate of bar-shaped composite cylindrical irradiator, length≤54mm, the diameter≤10mm of rod (14).The external diameter of cylindrical spiral is 3mm to 30mm, its length 5mm to 100mm, and pitch is 2.5mm to 4.5mm, selects one to immobilize.
As columniform diameter≤10mm, can according to above-mentioned with coaxial wire manufacture cylindrical unequal distant screw Celomic type irradiator method, the pitch here is equidistant, its rod (14) is plastic sheath and an outer conductor of peelling off one section coaxial wire again, remaining inner wire is exactly a rod (14), and the length of general rod (14) is 10mm to 25mm.Example is as follows:
Use the SFB-50-5 coaxial radio frequency cable, rod (14) length is 20mm, and pitch is 3mm, and the number of turns is 6 circles, the outside of this irradiator polytetrafluoroethylmaterial material encapsulation process
As columniform diameter＞10mm, should adopt the structure of Fig. 4.Example is as follows:
Rod (14) top diameter is that 10mm and housing (13) constitute the coaxial transmission line with 50 Ω characteristics impedance, the diameter of part becomes 4mm beyond rod (14) extensional shell, length is 28mm, the diameter of columniform skeleton (10) is 20mm, its pitch is 4.5mm, the number of turns 17 circles, line directly is 1.5mm.
3. bar-shaped composite cylindrical unequal distant screw Celomic type irradiator, this irradiator are with above-mentioned 1 and 2 stacks, for example can become not equidistant to the helicla flute of the skeleton of Fig. 4 (10) with lathe in machining, and top is 4.5mm, and terminal is 2mm, and linear change gets final product.As columniform diameter≤10mm, we still adopt coaxial wire to make cylindrical spirillum cavate irradiator.Example is as follows:
Use the SFB-50-5 coaxial radio frequency cable, rod (14) length is 15mm, and pitch is from 4mm to 2mm linear change, and the number of turns is 6 circles, the outside polytetrafluoroethylmaterial material encapsulation process of using of this irradiator.
Needle-like composite conic spirillum cavate irradiator:
Have its surface of spiral fluted skeleton (16) (18) and be quadratic surface, then spiral (17) becomes bullet spiral after coiling in the above.Quadratic surface with cone-shaped is revolution ellipsoid, sphere, taper seat, hyperboloid, parabola.According to the demand of diseased region, for example be used for gynecological, can be processed into the bullet of the paraboloid of revolution to skeleton (16), the diameter of its awl base is 20mm to 33mm, bores high 15mm to 25mm, pitch 3mm to 4.5mm, the number of turns 5 to 10 circle, line footpath≤1.5mm, needle-like antenna (15) length is 0 to 25mm.Example is as follows:
Boring basic diameter is 28mm, bores high 25mm, 7 circles, and line footpath 1.5mm, pitch is 4mm, needle-like antenna (15) length is 20mm.
Also can above-mentioned needle-like antenna (15) be removed according to clinical demand.
Elongated flexible Celomic type irradiator:
Elongated flexible Celomic type irradiator with external spiral (25) or sleeve (26) shape, when the length of wire antenna (22) is:
1. λ/4 usefulness wedge shape thin slices (23) coil, or cover with 3～4 shroud sleeves (26).
2. λ/pointed thin slices of both-end of 2 usefulness (24) coil, or cover with 5～7 shroud sleeves (26).
3.3 with a wedge shape thin slice (23) coiling, a pointed thin slice of both-end of reuse (24) coils, or covers with 8～10 shroud sleeves (26) segmentation earlier in λ/4.
4.1 λ with two pointed thin slices of both-end (24) segmented disc successively around, or cover with 10～12 shroud sleeves (26) segmentation.
5.5 λ/4, or 3 λ/2, or 7 λ/4, or 2 cover mode and preceding 4 kinds with thin slice (23), thin slice (24) coiling mode and shroud sleeve (26) during λ and analogize, so during the length≤2 λ of wire antenna (22), with≤4 thin slices (23), thin slice (24) segmented disc around, as shown in Figure 9, or with (26) 3～25 segmented sheathings of sleeve, referring to Fig. 8.
" segmented disc around " of above-mentioned proposition or the connotation of " segmentation is covered " are meant when wire antenna (22) length is about n λ/4, at distance antenna terminal (2n+1) λ/4 (n=0 of place, 1,2,3 ...) microwave field is stronger, the spiral (25) of thin slice (23), thin slice (24) coiling and shroud sleeve (26) cover thick paragraph and should place herein, and n λ/field, 2 place a little less than, this paragraph does not just have spiral (25) or sleeve (26) to cover.
When using the 2450MHZ microwave, when the external diameter of the soft support of medium (21) was 3.2mm, the bottom side length of wedge shape thin slice (23) was 2～4mm, long 10～25mm.The height of the pointed thin slice of both-end (24) is 2～4mm, long 20～50mm.The thickness of thin slice (23), thin slice (24) is 0.1mm.
When using the 2450MHZ microwave, need be with (26) 3～20 of shroud sleeves during the length of wire antenna (22)≤2 λ, be enclosed within on the wire antenna (22), so the external diameter of the soft support of medium (21) is identical with the internal diameter of shroud sleeve (26), sleeve (24) spacing is unequal or equal, and the length of sleeve (24) can be identical or inequality.General telescopic length is 4mm, 5mm, 6mm, also other value.Sleeve (26) thickness is 0.1mm.
Example is as follows:
1. the length when wire antenna (22) is n λ/4, n=1,2,3,4,5,6,7,8.The external diameter of the soft support of medium is 3.2mm.Can adopt thin slice (23), thin slice (24) coiling.
During n=1, coil with a wedge shape thin slice (23), top microwave field at wire antenna (22) is the strongest, wedge shape thin slice (23) base earlier around, and weld with the coaxial transmission line outer conductor, the formation external spiral covers wire antenna (22), and does not then cover at the much more weak positions of the position dead area that microwave is stronger.
During n=2, coil at the strong position of the central microwave field of wire antenna (22) with a pointed thin slice of both-end (24).
During n=3, be coiled in the strong position of wire antenna (22) top microwave with a wedge shape thin slice (23) earlier, a pointed thin slice of both-end of reuse (24) is coiled in the stronger position of another section microwave.
During n=4, be coiled in two positions that microwave field is stronger successively with two pointed thin slices of both-end (24) segmentation.
N=5,6,7,8, the time the coiling mode analogize with aforementioned, the kind and the quantity of used thin slice (23), thin slice (24), as shown in Figure 9.
The height of the pointed thin slice of both-end (24) is 3mm, and long is 40mm.
The bottom side length of wedge shape thin slice (23) is 3mm, and long is 20mm.
The outer surface of irradiator carries out encapsulation process with polytetrafluoroethylmaterial material.
2. the length of wire antenna (22) is n λ/4, n=1,2,3,4,5,6,7,8.Its values of long sleeve (26) such as we adopt are 5mm, or do not wait its value of long sleeve (26) to be respectively 4mm, 5mm, 6mm.Be set in above the soft support of medium (21), sleeve (26) be distributed as equidistantly or not equidistant.
During n=1, wait long sleeves (26) with three, or do not wait long sleeve (26) with three.
During n=2, wait long sleeves (26) with five, or do not wait long sleeve (26) with five.
During n=3, wait long sleeves (26) with eight, or do not wait long sleeve (26) with eight.
During n=4, wait long sleeves (26) with ten, or do not wait long sleeve (26) with ten.
N=5,6,7,8 o'clock sleeve (26) distribute and analogize with the former, as shown in Figure 8.
Three are not waited its value of long sleeve (26) is 4mm, 5mm, 6mm.
Five are not waited its value of long sleeve (26) to be two of 4mm, two of 5mm, one of 6mm.
Eight are not waited its value of long sleeve (26) to be three of 4mm, three of 5mm, two of 6mm.
Ten are not waited its value of long sleeve (26) to be four of 4mm, four of 5mm, two of 6mm.
13 are not waited its value of long sleeve (26) to be five of 4mm, five of 5mm, three of 6mm.
15 are not waited its value of long sleeve (26) to be six of 4mm, six of 5mm, three of 6mm.
18 are not waited its value of long sleeve (26) to be seven of 4mm, seven of 5mm, four of 6mm.
20 are not waited its value of long sleeve (26) to be eight of 4mm, eight of 5mm, four of 6mm.
Be patient's service for using above-mentioned irradiator, our microwave therapy apparatus with power stability output of development is supporting with it.Body surface contact irradiator microwave maximum power capabilities 60W, the maximum microwave power capacity of Celomic type irradiator 20W, we select the 2450MHZ frequency for use microwave frequency.
Claims (12)
1, a kind of screw type body surface contact or Celomic type irradiator that is used for micro-wave therapeutic, what it is characterized in that spiral [4] is shaped as plane or concave surface, and its pitch is for equidistantly or not equidistant, and inlays or set off on skeleton [3], also is furnished with housing [2] and cover [5].
2, screw type body surface contact irradiator according to claim 1, it is characterized in that spiral [4] is for circular, its diameter is 20mm to 60mm, pitch is 2mm to 8mm, and is embedded on the circular skeleton [3] with plane or concave surface helix groove, and housing [2] is spill and is one with outer conductor [1], it highly is λ/4, the cover [5] be round table-like, it highly is 10mm to 25mm, with the body surface contact surface be plane or concave surface.
3, screw type Celomic type irradiator according to claim 1, it is characterized in that the special-purpose Celomic type of gynecological, its length L=120mm to 200mm, diameter of phi=25mm to 40mm, spiral [4] is rounded, pitch 2mm to 4.5mm, the number of turns＜5 circles, and be embedded on the skeleton [3] with helix groove, housing [2] is spill and outer conductor [1] fuses, the end face [9] of cover [5] is concave surface or plane or hemispherical, supporter [8] is long tubular and is connected with cover [9], inner wire [6] and outer conductor [1] are installed in the supporter [8], constitute the coaxial transmission line of 50 Ω characteristics impedance.
4, screw type body surface contact irradiator according to claim 1, it is characterized in that thin type body surface contact, its thickness≤15cm, spiral [4] is planar rondure, ellipse, rectangle, square, triangle, polygon, making spiral [4] with strip line or round wire inlays or sets off on the skeleton [3] in flat sheet, cover [5] and housing [2] are tabular, effective radiating area≤225cm
2
5, a kind of cylindrical screw type Celomic type irradiator that is used for micro-wave therapeutic is furnished with sheath [11] and support housing [13], and the pitch that it is characterized in that spiral [12] is not for equidistant; Or the rod cylindrical spiral [12] of [14] combined tessera on skeleton [10], its pitch is for equidistantly or not equidistant, when the diameter of cylindrical spiral [12] can be unworthy of support housing [13] less than 10mm.
6, cylindrical screw type Celomic type irradiator according to claim 5, it is characterized in that skeleton [10] length≤110mm, diameter＞10mm, to have its pitch excursion of unequal distant screw wire casing be 2mm to 4.5mm; When the diameter of cylindrical spiral [12]≤10mm, be coiled in the outer surface of the soft support of medium with the inner wire of coaxial wire by not equidistant form, its pitch excursion is 2mm to 4mm, the number of turns 5 to 20 circles; Do not contain rod [14].
7, cylindrical screw type Celomic type irradiator according to claim 5 is characterized in that length≤54mm, the diameter≤10mm of rod [14], and the external diameter of cylindrical spiral [12] is that 3mm to 30mm, length are that 5mm to 100mm, pitch are 2.5mm to 4.5mm.
8, a kind of screw type Celomic type irradiator that is used for micro-wave therapeutic is characterized in that spiral [17] is embedded in and has spiral fluted skeleton [16], skeleton surface [18] is the taper quadratic surface, the vertex of a cone that spiral [17] is wound into skeleton [16] extends to form needle-like antenna [15] more forward, also is furnished with supporter [19] and sheath [20].
9, screw type Celomic type irradiator according to claim 8 is characterized in that boring basic diameter is 20mm to 33mm, and the awl height is 15mm to 25mm, pitch 3mm to 4.5mm, and the number of turns 5 to 10 circles, line footpath≤1.5mm, needle-like antenna [15] length can be 0 to 25mm.
10, a kind of thread like body cavate irradiator that is used for micro-wave therapeutic, its length≤2 λ, outer surface at wire antenna [22] is done the soft support of medium [21] with polytetrafluoroethylmaterial material, it is characterized in that being wound with helical shield band [25] at the outer surface of the soft support of medium [21], or be with shroud sleeve [26], its axial length that hides wire antenna [22] and wire antenna [22] axially microwave radiation are directly proportional, thereby make to become evenly that the outside of antenna seals with polytetrafluoroethylmaterial material along antenna axis direction microwave radiation.
11, thread like body cavate irradiator according to claim 10, what it is characterized in that mask tape [25] is shaped as wedge shape thin slice [23] or the pointed thin slice of both-end [24]; The external diameter suit that the internal diameter of shroud sleeve [26] equals the soft support of medium [21] coincide, and the length of sleeve [26] can equate or is unequal; During the length of wire antenna [22]≤2 λ, the thin slice [23] and the thin slice [24] of available≤4 with the outer surface of spiral type segmented disc around the soft support of medium [21], or are enclosed within the outer surface of the soft support of medium [21] with [26] 3～25 segmentations of sleeve.
12, thread like body cavate irradiator according to claim 11 is characterized in that the length of wire antenna [22] is:
(1) λ/4 o'clock are with a thin slice [23] coiling, or cover with three shroud sleeves [26], or
(2) λ/2 o'clock are with a thin slice [24] coiling, or cover with five shroud sleeves [26], or
(3) 3 λ/4 an o'clock elder generation coils with a thin slice [23], and a thin slice of reuse [24] coils, or covers with eight shroud sleeves [26] segmentation, or
During (4) 1 λ with two thin slices [24] segmented disc successively around, or cover with ten shroud sleeves [26] segmentation, or
(5) 5 λ/4, or 3 λ/2, or 7 λ/4, or the mode of covering with thin slice [23], thin slice [24] coiling and shroud sleeve [26] during 2 λ is analogized by preceding 4 kinds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106763 CN1019886C (en) | 1990-08-09 | 1990-08-09 | Screw medical microwave radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106763 CN1019886C (en) | 1990-08-09 | 1990-08-09 | Screw medical microwave radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1058151A CN1058151A (en) | 1992-01-29 |
| CN1019886C true CN1019886C (en) | 1993-02-10 |
Family
ID=4880250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106763 Expired - Fee Related CN1019886C (en) | 1990-08-09 | 1990-08-09 | Screw medical microwave radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019886C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050305C (en) * | 1995-05-17 | 2000-03-15 | 深圳安科高技术有限公司 | Microwave radiator |
| CN103731946B (en) * | 2014-01-16 | 2015-09-02 | 任长学 | A kind of radio frequency heating method and apparatus |
| CN110113833A (en) * | 2019-05-28 | 2019-08-09 | 中国电子科技集团公司第十二研究所 | A kind of microwave radiation heating antenna component |
| CN113058161A (en) * | 2021-04-29 | 2021-07-02 | 广西善缘健康管理有限公司 | Microwave therapeutic instrument |
-
1990
- 1990-08-09 CN CN 90106763 patent/CN1019886C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1058151A (en) | 1992-01-29 |
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