CN1285324C - One-way shape memory plane spiral microwave antenna for thermotherapy - Google Patents
One-way shape memory plane spiral microwave antenna for thermotherapy Download PDFInfo
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- CN1285324C CN1285324C CN 200410073204 CN200410073204A CN1285324C CN 1285324 C CN1285324 C CN 1285324C CN 200410073204 CN200410073204 CN 200410073204 CN 200410073204 A CN200410073204 A CN 200410073204A CN 1285324 C CN1285324 C CN 1285324C
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Abstract
The present invention relates to a medical thermotherapy antenna, particularly to a single-trip shape memory plane spiral microwave antenna which is provided with an intervening conduit and a coaxial input wire, the present invention is characterized in that the coaxial input wire, the plane spiral antenna, a conductor earth mat and a lead-in head are all sheathed in the intervening conduit and can move forwards and backwards in the intervening conduit, and an inner conductor is welded with the plane spiral antenna; a casing tube is arranged on the junction of the inner conductor and the plane spiral antenna, and the conductor earth mat is clamped on an outer conductor by a metal ring. When entering a human body, the coaxial input wire, the plane spiral antenna and the conductor earth mat are all sheathed in the intervening conduit, and the plane spiral antenna and the conductor earth mat extend out of the intervening conduit and unfold and transform into designed shapes at internal temperature of the human body. The design of the present invention has the advantages that nidus tissues need not to be punctured, and shapes of a therapy range and a therapy region can be regulated by regulating the parameter of the antenna; the present invention is free from the limitation of body structures by adopting a memory alloy material.
Description
Technical field
The invention belongs to coaxial cable microwave antenna technical field, relate to a kind of medical antenna for thermotherapy, particularly a kind of one-way shape memory plane spiral microwave antenna.
Background technology:
Microwave heat therapeutic technology arriving in the clinical treatment of a lot of diseases is used, and coagulates solidifying of hemostasis and paraplasm tissue etc. as thermotherapy, the heat of tumor.Microwave heat therapeutic often is divided into external thermotherapy and vivo inserted or insertion thermotherapy.External thermotherapy is meant that antenna for radiating microwave is positioned at the thermotherapy of health outside, be mainly used in and treat the pathological tissues that is positioned at health top layer and shallow top layer, its antenna pattern and size are not subjected to the restriction of organization of human body, can select the antenna of various structures such as open ended waveguide, microstrip antenna, dipole and helical antenna.To being positioned at the pathological tissues in health deep, the normal method that adopts intervention or insert makes antenna go deep into lesions position pathological tissues is heated to treat.Intervention is meant that antenna enters lesions position by the natural cavity of human body, and insertion is to make antenna enter lesions position by modus operandi.
Intervention and insertion therapeutic modality have limited the structure and the size of antenna, cause the shape of heated perimeter and heating region to be very limited.Intervention commonly used and insertion antenna are volume coaxial feed antenna little, simple in structure, as the slot antenna of Taylor initiative in 1978, with 1/4 wavelength conductor overcoat dipole antenna (Hurter in 1991 etc.), the slot antenna (calendar year 2001 Pisa) of apex area increase, the dipole antenna (Alain D in 2000) of spiral etc.These antenna is column structure, emittance is that the center distributes axisymmetricly with the radiating slot on the post, heated perimeter is limited, heating region shape adjustment difficulty, the aerial radiation center need be positioned at the focus centre in addition, often need insert lesion tissue to antenna in the treatment, increases the treatment wound, to tumor tissues, also may cause the transfer of tumor cell.
Summary of the invention
At above-mentioned prior art situation, the object of the present invention is to provide a kind of be not subjected to body structure restriction, can not stab lesion tissue and realize the in-vivo tissue surface is heated to treat, therapeutic domain and the adjustable one-way shape memory plane spiral microwave antenna for thermotherapy of area for treatment shape.
A kind of one-way shape memory heat therapy microwave antenna of the present invention, employing standard or non-standard coaxial cable feed mode have interposing catheter, coaxial input line, import head; Coaxial input line comprises inner wire, the medium between internal and external conductor, outer conductor, medium overcoat; It is characterized in that: this heat therapy microwave antenna also has flat helical antenna and conductor grounded screen, this flat helical antenna and conductor grounded screen are made by the one way memory alloy material, and flat helical antenna, conductor grounded screen, coaxial input line and importing head are set in the interposing catheter jointly; Conductor grounded screen is connected on the outer conductor with becket, and inner wire and flat helical antenna are welded to connect, and a sleeve pipe is established in the junction; Importing head is fixedly connected with flat helical antenna.Described one-way shape memory alloy material is for having " super-elasticity " characteristics and making alloy have NiTi system or the copper system or the iron-based alloy of memory design shape characteristic by working hardening and the training of hot machine; Conductive earthing net and flat helical antenna material therefor can be the same or different; The expansion shape of flat helical antenna is the helical structure that the memorial alloy line forms by the radius incremental manner on same plane, and its rotation distance is 0.1cm～5cm, and the rotation number of turn is 3～25 circles, and the diameter of its memorial alloy wire rod is 0.1mm～5mm; The mesh diameter of conductive earthing net is less than 10mm, and its memorial alloy wire material diameter is 0.05mm～1mm, and expansion shape is middle garden, the plane shape network structure that a trepanning is arranged, and middle trepanning extension goes out a cylindricality net; Big 5～the 10mm of radius of the cancellated radius ratio flat helical antenna of garden, plane shape, the length of cylindricality net is 4mm～10mm, the diameter of cylindricality net is than the big 1mm～5mm of outer conductor radius of used coaxial input line; The extension column net of conductive earthing net is enclosed within on the coaxial input line outer conductor, and fixes by metal clasp; Import the smooth cone structure that head is made for the medical latex that contains the fluorography material, strong bond is at an end of flat helical antenna; The big I of flat helical antenna area for treatment is by regulating the selection of its number of turn, ring spacing parameter.
The bounce of one-way shape memory alloy almost immobilizes, even firmly crooked, also can flexibly revert to original shape; The common metal deformation extent is big more, and restorable bounce is just strong more.Getting involved and the Cheng Qian that withdrew from an organization, the relative interposing catheter of coaxial input line outwards spurs by external force, and making flat helical antenna stretching is linear structure, and the conductive earthing net is strapped in the interposing catheter, imports the opening of head sealing interposing catheter; After entering body interior thermotherapy position, the relative interposing catheter of coaxial input line slowly inwardly promotes by external force, utilize the super-elasticity characteristics of one way memorial alloy, stretching flat helical antenna and bound conductive earthing net slowly expand into snail shape and netted conducting surface under the temperature of inside of human body, wherein the expansion shape of flat helical antenna is the helical structure that the memorial alloy line forms by the radius incremental manner on same plane, make alloy memory design shape by working hardening and the training of hot machine, coaxial input line, flat helical antenna and conductor grounded screen all are strapped in the interposing catheter when getting involved and withdrawing from health, and flat helical antenna and conductor grounded screen are stretched out the outer design shape that also slowly expands into of interposing catheter during treatment.
The feature and advantage that the antenna of the present invention's design has:
(1) do not need to stab lesion tissue and realize heating to treat the in-vivo tissue surface; (2) shape of therapeutic domain and area for treatment all can be adjusted shape and the big or small restriction that no longer is subjected to body structure that (3) are adopted memory alloy material to make intervention or inserted antenna by the parameter of regulating antenna.
Antenna of the present invention is suitable for tumor thermotherapy, disposable hemostasis and solidifies abnormal structure's hypertrophy etc.Can treat the pathological tissues that is positioned at the various natural housing surfaces of human body.The method that antenna enters health comprises: by the undamaged therapentic part of getting involved in of body's natural cavity; Arrive therapentic part along the blood vessel in the health; Make antenna arrive therapentic part by operation; Employing has the inserted mode of damage to make antenna arrive therapentic part.By adjusting the coiling parameter and the shape of flat helical antenna, the heating region figure that obtains medical treatment required.
Description of drawings
Fig. 1 is that antenna of the present invention is strapped in the structural representation in the interposing catheter
Fig. 2 is that antenna of the present invention enters unfolded structural representation behind the health
Fig. 2 a is the floor map that conductive earthing net and coaxial outer conductor pass through the becket clamping
Fig. 2 b is the floor map behind the conductive earthing net unfolding
Fig. 2 c is the shape sketch map after flat helical antenna launches
Wherein:
Medium 5 conductive earthing nets 6 coaxial inner conductors 7 pads 8 flat helical antennas 9 import 10 beckets, 11 a coaxial input line between 1 interposing catheter, 2 coaxial line medium overcoats, 3 coaxial outer conductors, 4 coaxial line internal and external conductors
The specific embodiment
Now in conjunction with the accompanying drawings the one-way shape memory plane spiral microwave antenna for thermotherapy specific embodiment of the present invention is further described:
Example 1: the one-way shape memory plane spiral microwave antenna for thermotherapy that is used for the gastric cancer thermotherapy
The flat helical antenna 8 of one-way shape memory plane spiral microwave antenna for thermotherapy and conductive earthing net 5 adopt Ti content 49%, the Ultimum Ti wire rod processing of nickel content 51%.The diameter of the shape memory alloy material that flat helical antenna 8 is selected for use is 0.8mm, and the spiral number of turn is 8 circles, and direction of rotation is that rotation distance is 0.5cm clockwise; It is 0.1mm that conductive earthing net 5 is selected the diameter of shape memory alloy material for use, and mesh diameter 5mm, the diameter of conductive earthing wire side are 10cm, center bore dia 5mm, and trepanning extends the long 8mm of column net.The interior diameter of interposing catheter is 6mm.It is 8mm that taper imports a bottom surface diameter, high 5mm.Coaxial input line adopts the SFF-50-3-1 of standard, and its inner wire diameter is 0.93mm, and the outer conductor diameter is 3.1mm, and medium overcoat diameter is 4.5mm.
One-way shape memory plane spiral microwave antenna for thermotherapy (seeing Fig. 1 and Fig. 2) is by coaxial input line (11), interposing catheter 1, flat helical antenna 8, conductor grounded screen 5, importing 9 formation; Wherein coaxial input line 11 comprises inner wire 6, the medium 4 between internal and external conductor, outer conductor 3, medium overcoat 2.Flat helical antenna 8 one ends weld with the inner wire 6 of coaxial input line, the other end and importing 9 strong bond.Conductive earthing net 5 extended column nets are connected on the coaxial outer conductor 3 and with becket 10 and fix.Coaxial input line, flat helical antenna 8 and conductor grounded screen 5 all are strapped in (Fig. 1) in the interposing catheter 1 when getting involved and withdrawing from health, flat helical antenna 8 and conductor grounded screen 5 are stretched out the outer design shape that also slowly expands into of interposing catheter during treatment.Import 9 smooth cone structures of making by the medical latex that contains the fluorography material, can pass through contrast machine tracking antenna position in vivo in the treatment.
The relative interposing catheter of coaxial input line outwards spurs before the treatment, and making helical antenna stretching is linear structure, and conductive earthing net 5 is strapped in the interposing catheter 1, imports an opening (as Fig. 1 structure) of 9 sealing interposing catheters.After getting involved in the knub position of stomach surface by oral cavity, esophagus not damaged, coaxial input line 11 relative interposing catheters 1 slowly inwardly promote by external force, utilize the super-elasticity characteristics of one way memorial alloy, stretching flat helical antenna 8 and bound conductive earthing net 5 slowly expand into snail shape and netted conducting surface (as Fig. 2 structure).Fig. 2 a conductive earthing net and inner wire junction structural representation; Fig. 2 b is front view (right side) and the side view (left side) after net grounded side launches; Fig. 2 c is the shape sketch map after helical antenna launches.Open microwave source and carry out thermotherapy, treatment 10～40min turn-offs microwave source when treatment finishes, by external force antenna is withdrawn in the interposing catheter, returns to Fig. 1 structure, and then slowly withdraws from external by external force.
Example 2: the one-way shape memory plane spiral microwave antenna for thermotherapy that is used for the uterus carcinoma thermotherapy
The flat helical antenna 8 of one-way shape memory plane spiral microwave antenna for thermotherapy and conductive earthing net 5 adopt Ti content 50%, the Ultimum Ti wire rod processing of nickel content 50%.The spiral rotation number of turn that flat helical antenna 8 is selected for use is 5, and the diameter of spiral-shaped memory alloy material is 0.5mm, and direction of rotation is that rotation distance is 0.8cm clockwise; It is 0.5mm that conductive earthing net 5 is selected the diameter of shape memory alloy material for use, and mesh diameter 5mm, the diameter of conductive earthing wire side are 7cm, center bore dia 4mm, and trepanning extends the long 5mm of column net.The interior diameter of interposing catheter is 5mm.It is 7mm that taper imports a bottom surface diameter, high 5mm.Coaxial input line adopts the SFF-50-2-1 of standard, and its inner wire diameter is 0.73mm, and the outer conductor diameter is 2.3mm, and medium overcoat diameter is 3.3mm.
The relative interposing catheter of coaxial input line outwards spurs before the treatment, and making helical antenna stretching is linear structure, and conductive earthing net 5 is strapped in the interposing catheter 1, imports an opening (as Fig. 1 structure) of 9 sealing interposing catheters.Get involved in the knub position on intrauterine surface by the vagina not damaged after, coaxial input line intervention is relatively led 1 pipe by slowly inwardly promotion of external force, utilize the super-elasticity characteristics of one way memorial alloy, stretching flat helical antenna 8 and bound conductive earthing net 5 slowly expand into snail shape and netted conducting surface (as Fig. 2 structure).Fig. 2 a conductive earthing net and inner wire junction structural representation; Fig. 2 b is front view (right side) and the side view (left side) after net grounded side launches; Fig. 2 c is the shape sketch map after helical antenna launches.Open microwave source and carry out thermotherapy, treatment 10～40min turn-offs microwave source when treatment finishes, by external force antenna is withdrawn in the interposing catheter 1, returns to Fig. 1 structure, and then slowly withdraws from external by external force.
Claims (6)
1, a kind of one-way shape memory heat therapy microwave antenna, employing standard or non-standard coaxial cable feed mode have interposing catheter (1), coaxial input line (11), import head (9); Coaxial input line (11) comprises inner wire (6), the medium between internal and external conductor (4), outer conductor (3), medium overcoat (2); It is characterized in that: this heat therapy microwave antenna also has flat helical antenna (8) and conductor grounded screen (5), this flat helical antenna (8) and conductor grounded screen (5) are made by the one way memory alloy material, and flat helical antenna (8), conductor grounded screen (5), coaxial input line (11) and importing head (9) are set in the interposing catheter (1) jointly; Conductor grounded screen (5) is connected on the outer conductor (3) with becket (10), and inner wire (6) is welded to connect with flat helical antenna (8), and a pipe (7) is established in the junction; Importing head (9) is fixedly connected with flat helical antenna (8).
2, one-way shape memory heat therapy microwave antenna according to claim 1 is characterized in that: described one-way shape memory alloy material is for having " super-elasticity " characteristics and making alloy have NiTi system or the copper system or the iron-based alloy of memory design shape characteristic by working hardening and the training of hot machine; Conductive earthing net (5) and flat helical antenna (8) material therefor can be the same or different.
3, one-way shape memory heat therapy microwave antenna according to claim 1, it is characterized in that: the expansion shape of flat helical antenna (8) is the helical structure that the memorial alloy line forms by the radius incremental manner on same plane, its rotation distance is 0.1cm～5cm, and the rotation number of turn is 3～25 circles; The diameter of its memorial alloy wire rod is 0.1mm～5mm.
4, one-way shape memory heat therapy microwave antenna according to claim 1 is characterized in that: the mesh diameter of conductive earthing net (5) is less than 10mm, and its memorial alloy wire material diameter is 0.05mm～1mm; Expansion shape is middle garden, the plane shape network structure that a trepanning is arranged, and middle trepanning extension goes out a cylindricality net; Big 5～the 10mm of radius of the cancellated radius ratio flat helical antenna of garden, plane shape, the length of cylindricality net is 4mm～10mm, the diameter of cylindricality net is than the big 1mm～5mm of outer conductor radius of used coaxial input line; The extension column net of conductive earthing net (5) is enclosed within on coaxial input line (11) outer conductor (3), and fixing by metal clasp (10).
5, one-way shape memory heat therapy microwave antenna according to claim 1 is characterized in that: import the smooth cone structure that head (9) is made for the medical latex that contains the fluorography material, strong bond is at an end of flat helical antenna (8).
6, one-way shape memory heat therapy microwave antenna according to claim 1 is characterized in that: the big I of flat helical antenna (8) area for treatment is by regulating the selection of its number of turn, ring spacing parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410073204 CN1285324C (en) | 2004-10-28 | 2004-10-28 | One-way shape memory plane spiral microwave antenna for thermotherapy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410073204 CN1285324C (en) | 2004-10-28 | 2004-10-28 | One-way shape memory plane spiral microwave antenna for thermotherapy |
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| CN1602821A CN1602821A (en) | 2005-04-06 |
| CN1285324C true CN1285324C (en) | 2006-11-22 |
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| CN 200410073204 Expired - Fee Related CN1285324C (en) | 2004-10-28 | 2004-10-28 | One-way shape memory plane spiral microwave antenna for thermotherapy |
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| CN110313637A (en) * | 2018-03-29 | 2019-10-11 | 北京航天雷特机电工程有限公司 | A kind of electronic cigarette |
| CN111952715A (en) * | 2020-08-13 | 2020-11-17 | 西安量极医疗设备有限公司 | Microwave physiotherapy radiator based on miniaturized dipole antenna |
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Granted publication date: 20061122 Termination date: 20091130 |