CN1264482C - RF hot air bag guide tube - Google Patents
RF hot air bag guide tube Download PDFInfo
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- CN1264482C CN1264482C CN 03107981 CN03107981A CN1264482C CN 1264482 C CN1264482 C CN 1264482C CN 03107981 CN03107981 CN 03107981 CN 03107981 A CN03107981 A CN 03107981A CN 1264482 C CN1264482 C CN 1264482C
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- air bag
- central siphon
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- radio frequency
- air sac
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Abstract
The present invention relates to a guide tube of a radio frequency hot air sac, which can uniformly heat organizations contacted with the air sac so that thermotherapy is safely and properly carried out to the sick part in the mode of ablation or high temperature treatment. The guide tube of the radio frequency hot air sac comprises one guide tube (4) comprising an outer shaft tube (2) and one inner shaft tube (3), one expansible air sac (6) which can be expanded and contacted with a target damage (18), one radio frequency electrode (8) which extends in an air sac wall or the air sac to be combined with a counter electrode (53) to provide radio frequency energy, a leading wire (10) which is electrically connected with the radio frequency electrode, one temperature sensor (12) which can sense the temperature of contained liquid in the air sac and one temperature distribution homogenization mechanism (14) which causes the temperature distribution of the contained liquid in the air sac to be homogenized, wherein the counter electrode is arranged on a preset position(for example, the inner part of the air sac, the inner part of the air sac wall, the inner part of the adjacent air sac or the surface of the body of a patient), the inner guide tube (3) can extend through the outer shaft tube and slide corresponding to the outer shaft tube, and the air sac (6) can be installed between the respective front end parts of the inner shaft tube and the outer shaft tube.
Description
Technical field
The present invention relates to a kind of radio frequency steam ductus bursae (RTBC), more particularly, relate to a kind of radio frequency steam ductus bursae that is used for the treatment of cardiovascular disease.
Background technology
Utilize an expansive air bag and one be placed in this air bag electrode and can be by providing radio-frequency (RF) energy to produce the Therapeutic Method that a rf electric field heats the tissue that contacts with this air bag to this electrode, be disclosed among Japan Patent No.2538375, the No.2510428 and No.2574119 that for example authorizes the present patent application people.The tissue that contacts with this air bag must heat equably or in heterogeneity, to reach gratifying treatment.But the electrode wires of forming electrode can not be arranged in the air bag equably.If the electrode wires irregular arrangement, contained liquid just heats brokenly or unevenly in the air bag so.The local temperature difference of contained liquid is also owing to convection current increases in the air bag, and the temperature of air bag middle and upper part uprises.Thereby the temperature in the air bag can distribute irregularly inevitably or be inhomogeneous.Therefore, the tissue that contacts with air bag can not be heated equably.
Summary of the invention
Therefore, the objective of the invention is to solve these problems of the prior art, thereby and provide a kind of can heat the tissue safety that contacts with air bag equably and suitably to ill part carry out such as ablate or hyperthermia treatment the radio frequency steam ductus bursae of heating therapy.
According to the present invention, a kind of radio frequency steam ductus bursae comprises: a conduit comprises that an outer central siphon and passes this outer central siphon and the interior central siphon that can slide with respect to outer central siphon; An expansive air bag, can expand and with the leading section separately of central siphon inside and outside a target infringement contact and is installed between; A radio-frequency electrode is used for antielectrode combination and radio-frequency (RF) energy is provided, and stretches in the airbag wall or in the air bag, described antielectrode is configured on the precalculated position; A lead-in wire is electrically connected on this radio-frequency electrode; A temperature sensor, can the perception air bag in the temperature of contained liquid; And a temperature distribution homogenization mechanism, be used for making the temperature distribution homogenization of the contained liquid of air bag; Wherein this temperature distribution homogenization mechanism is a stirring mechanism, is used for stirring the contained liquid of air bag, and this stirring mechanism comprises: a connection tube that is connected on the outer central siphon, utilize the passage that is limited by outer central siphon and interior central siphon to be communicated with this air bag; And a vibration generating mechanism, be used for vibration is applied to the liquid that is full of this connection tube and passage.
This temperature distribution homogenization mechanism makes the temperature distribution homogenization of contained liquid in the air bag, because convection current etc. are former thereby the irregular Temperature Distribution of generation, make the target infringement that contacts with air bag and to be heated equably to prevent contained liquid in the air bag by the radio frequency heating.Because the Temperature Distribution of contained liquid can homogenization in the air bag, thus the temperature of liquid of temperature sensor measurement can accurately meet with the temperature of target infringement, thereby the temperature of controlled target infringement accurately.
This temperature distribution homogenization mechanism can be a stirring mechanism that is used for stirring the contained liquid of air bag.This stirring mechanism agitated liquid makes the uniformity of temperature profile in the liquid.
This radio frequency steam ductus bursae can also comprise: one is placed in interior central siphon leading section and partly goes up the rotation anterior cannula of rotating with around the conduit axis; A leading section that is placed in outer central siphon is partly gone up the rotation rear sleeve that rotates with around the conduit axis; And one keep this lead-in wire to make radio-frequency (RF) energy can supply to lead-in wire going up and make sleeve at the bottom of the rotary rotation of lead-in wire; Wherein, this radio-frequency electrode comprises the many electrode wires that extend parallel to each other between rotation front sleeve and rotation back sleeve, and this stirring mechanism comprises a rotary drive mechanism, be used to drive radio-frequency electrode, rotation front sleeve, rotation back sleeve, lead-in wire and rotation at the bottom of sleeve rotate.
The end sleeve of back sleeve, lead-in wire and the rotation of the rotary drive mechanism driving radio-frequency electrode of this stirring mechanism, the front sleeve of rotation, rotation rotates, so that radio-frequency electrode is rotated.Like this, can obtain uniform radio-frequency (RF) energy and supply with, and the Temperature Distribution in the liquid can be owing to the stirring effect of the radio-frequency electrode of rotating homogenization.
This radio-frequency electrode can comprise the many electrode wires that are connected in parallel with each other on rotation front sleeve and the rotation back sleeve.Like this, radio-frequency electrode can easily be formed and can be evenly distributed in the air bag.
Preferably, be movable relative to each other vertically and when making airbag inflation, the linearly extended electrode wires of forming radio-frequency electrode can bend to arch, thereby extends along the inner surface of air bag when outer central siphon and interior central siphon.
Bend to the electrode wires of arcual radio-frequency electrode by rotation, can stir liquid contained in the air bag efficiently, and can produce a uniform rf electric field.
This lead-in wire can twine on spiral type ground, and the driving mechanism that rotates can rotate this lead-in wire, thereby rotates this radio-frequency electrode.
At lead-in wire that spiral type is twined when a direction is rotated, when the driving mechanism that rotates stops operating the lead-in wire that this spiral type twines, the lead-in wire that this spiral type is twined can be owing to the elastic force of himself along counter-rotation to recover its natural shape.
The driving mechanism of this rotation can drive sleeve at the bottom of rotation front sleeve, rotation back sleeve, lead-in wire and the rotation, make their alternate rotation in opposite direction, and can after they rotate pre-fixing turn along every kind of rightabout, change telescopic rotation direction at the bottom of rotation front sleeve, rotation back sleeve, lead-in wire and the rotation.Like this, this radio-frequency electrode can alternately be rotated in opposite direction simply, so that stir contained liquid in the air bag with radio-frequency electrode.
This stirring mechanism can comprise that one is connected on the outer central siphon and utilizes connection tube that the passage that limited by inside and outside central siphon is communicated with air bag and one to be used for vibration is applied to vibration generating mechanism on the liquid that is full of connection tube and passage.
This vibration generating mechanism is applied to vibration on the liquid that is full of connection tube and passage, and this vibration is propagated to liquid contained in the air bag and stirred this liquid, thereby makes the temperature distribution homogenization of contained liquid in the air bag.
This vibration generating mechanism can be applied to vibration the liquid that is full of connection tube and passage, makes to produce eddy current in the contained liquid in the air bag.
The Temperature Distribution that the eddy current that produces in the contained liquid in the air bag can make contained liquid in the air bag is homogenization efficiently.
This temperature distribution homogenization mechanism is a cycling mechanism, is used for the liquid of circulating gas-bag, makes the temperature distribution homogenization of contained liquid in the air bag.
The Temperature Distribution of contained liquid can be by the homogenization with the liquid of cycling mechanism circulation fixed temperature in the air bag.
A part that stretches into the interior central siphon in the air bag can be provided with a plurality of small nozzles, and this cycling mechanism can comprise a liquid feed mechanism, and central siphon was to suck air bag by these small nozzle atomizing of liquids and by the passage that is limited by inside and outside central siphon with the liquid that sprays in the latter can infeed liquid.
This liquid feed mechanism can pass through the small nozzle atomizing of liquids of interior central siphon, and can reclaim this liquid by the passage that is limited by inside and outside central siphon.
This radio-frequency electrode can be wrapped in to spiral type the part of the interior central siphon that extends in the air bag.Therefore, this radio-frequency electrode can easily be placed in the air bag, to be used for radio frequency heating efficiently.
This air bag can be made with a kind of antithrombotic heat-stable elastic resin.This air bag satisfies all required characteristics of air bag satisfactorily.
This precalculated position can be a patient position on one's body, and antielectrode is attached on one's body the patient.
This precalculated position can be in the airbag wall or air bag in a position.
This precalculated position can be the position of this air bag of vicinity.
Description of drawings
Read following description in conjunction with the accompanying drawings and will know above and other objects of the present invention, characteristics and advantage more.In the accompanying drawing:
Fig. 1 is the forward perspective illustration of the radio frequency steam ductus bursae in the first embodiment of the invention;
Fig. 2 is radio frequency steam ductus bursae and perspective illustration its anterior successive rear portion shown in Fig. 1;
Fig. 3 is the sketch map that helps explanation operation of radio frequency steam ductus bursae when being used for pulmonary venous electricity isolation with the treatment auricular fibrillation;
Fig. 4 (a) and 4 (b) be balloon catheter be in air bag contract flat with insert the state in the pulmonary vein and be in airbag inflation and with the sketch map separately of target infringement state of contact;
Fig. 5 is the perspective illustration of the radio frequency steam ductus bursae in the second embodiment of the present invention;
Fig. 6 (a) and 6 (b) be the radio frequency steam ductus bursae shown in Fig. 5 be in air bag contract flat with insert the state in the femoral artery and be in airbag inflation and with destination organization near contacted sketch map separately;
Fig. 7 helps explanation to use the steam ductus bursae to treat arteriosclerotic sketch map; And
Fig. 8 is the part of the view of the radio frequency steam ductus bursae in the third embodiment of the present invention.
The specific embodiment
Referring now to Fig. 1 to 4 radio frequency steam ductus bursae in the first embodiment of the invention is described.With reference to Fig. 1 and 2, radio frequency steam ductus bursae 1 comprises one by outer central siphon 2 with the conduit 4 that extends in the central siphon 2 outside thereby can form with respect to the interior central siphon 3 that outer central siphon 2 slides, one can be inflated and contact also the inflatable air bag that extends between the end sections separately 6 of central siphon 2 and interior central siphon 3 outside with the infringement target, a radio-frequency electrode 8 that is arranged in the air bag 6, a lead-in wire 10 that is electrically connected on the radio-frequency electrode 8, one be placed in the air bag 6 and can perception air bag 6 in the thermocouple 12 of temperature and agitating device 14 (promptly being used for making the temperature distribution homogenization mechanism of the temperature distribution homogenization of air bag 6 contained liquid).Guide wire 16 is by stretching out with conduit 4 co-axial interior central siphons 3 basically.Guide wire 16 guide catheters 4.
Rotation front sleeve 20 is placed on the leading section part of the interior central siphon 3 that stretches out in air bag 6, is used for the axis rotation around conduit 4.Rotation back sleeve 21 is placed on the leading section part of outer central siphon 2, is used for the axis rotation around conduit 4.Radio-frequency electrode 8 comprises the many electrode wires 8a that extend parallel to each other between rotation front sleeve 20 and rotation back sleeve 21.When air bag 6 contracts when flat, the electrode wires 8a of radio-frequency electrode 8 extends basically point-blank.When by central siphon 2 outside sliding with respect to interior central siphon 3 air bag 6 being expanded, electrode wires 8a bends to arch, thereby extends along the inner surface of air bag 6, as shown in fig. 1.
In being placed in, the end sleeve 23 of rotation on the central siphon 3, is used for of the axis rotation of the position of the rear end of central siphon 2 outside close around conduit 4.The middle part that rotation end sleeve 23 has the leading section part that a ring 24 is set, the rearward end part that a contact ring 25 is set and a gear 26 is set.Being bearing in a brush 29 on the pantograph keeps contacting with contact ring 25.
Form an external screw thread 31 in the rearward end part of outer central siphon 2, nut 32 and external screw thread 31 engagements.O shape ring 27 is placed on the rotation end sleeve 23, so that seal the inner surface of outer central siphon 2 and rotate gap between the outer surface of end sleeve 23 with the close mode of liquid.Like this, the gap between the gap between rotation end sleeve 23 and the outer central siphon 2 and rotation end sleeve 23 and the interior central siphon 3 is sealed in the close mode of liquid.Interior central siphon 3 extends by rotation front sleeve 20, rotation back sleeve 21 and rotation end sleeve 23.In rotation end sleeve 23 rearward end, form an external screw thread 33, and a nut meshes with external screw thread 33.An O shape ring 28 remains between the rearward end and nut 34 of rotation end sleeve 23.Gap in O shape ring 28 seals in the close mode of liquid between the outer surface of central siphon 3 and the rotation end sleeve 23.
10 spirally-wound coils go between.A lead-in wire end of 10 is connected on the sleeve 21 of rotation back and the other end is connected on the connecting ring 25.The brush 29 that keeps contacting with contact ring 25 is connected electrically on the radio-frequency signal generator 40.The radio-frequency (RF) energy that radio-frequency signal generator 40 produces 10 supplies on the radio-frequency electrode 8 by going between.This radio frequency send out and device in radio-frequency electrode 8 with apply the radio-frequency current of a 13.56MHz between the lip-deep antielectrode 53 (Fig. 3) attached to patient body.For example, when the diameter of air bag 6 during, provide to radio-frequency electrode 8 to be output as 100 to 200W radio-frequency (RF) energy for about 2.5cm.When this radio-frequency current is added in radio-frequency electrode 8 and attached to patient body between the lip-deep antielectrode 53 time, the tissue 18 that contacts with air bag 6 is owing to be accompanied by that the radio frequency of capacitive character heating is dielectric heating and hot to burn.This is dielectric heating to be to produce around the electrode 8 of air bag 6 inside, is directly proportional with different dielectric constant.Therefore, the tissue 18 that contacts with air bag 6 is burnt by heat according to radio frequency heating principle, and this heat is to produce in the contact portion of the dielectric components that has differing dielectric constant respectively.
Reduction gearing 35 and a motor 38 with gear 36 and 37 is set near gear 26.The rotation of the output shaft of motor 38 passes to gear 26 by gear 37 and 36 with the speed that reduces.Can control motor 38 like this, make its output shaft rotate the predetermined number of turns, also can control like this, make its output shaft alternately rotate the counterclockwise policy of Liang Manquan and edge along clockwise direction and rotate two full circles along a direction.
The hard slightly material of lead-in wire 10 usefulness is made.During sleeve 23, be connected lead-in wire 10 rotations on the ring 24 at the bottom of motor 38 drives the rotation that is fixed on the gear 26, therefore, rotation back sleeve 21, radio-frequency electrode 8 and rotation front sleeve 20 also rotate.
When motor 38 is controlled to when a direction is rotated lead-in wire 10 with the predetermined number of turns lead-in wire 10 opposite spins with its spiral type winding direction.When motor 38 stopped behind the pre-fixing turn of lead-in wire 10 rotations, lead-in wire 10 was automatically along opposite spin to its original shape.By alternately starting and stop motor 38, can alternately rotate radio-frequency electrode 8 in opposite direction.Alternately rotate two full circles along clockwise direction and rotate two in the counterclockwise direction when completely enclosing when motor 38 is controlled to its output shaft, the lead-in wire made from elastomeric material 10 alternately rotates radio-frequency electrode 8 in opposite direction with linear fashion.
Agitating device 14 (being temperature distribution homogenization mechanism) comprises rotation front sleeve 20, rotation back sleeve 21, rotation end sleeve 23 and the motor 38 that radio-frequency electrode 8 is rotated.Lead 10 is given radio-frequency electrode 8 with the rotating drive Motion Transmission of motor 38, and the radio-frequency (RF) energy that radio-frequency signal generator 40 is produced sends radio-frequency electrode 8 to.Agitating device 14 is used for eliminating the local temperature difference that air bag 6 produces, and the Temperature Distribution of liquid in the air bag 6 is become evenly.
Connect an arm 51 outside on the rearward end of central siphon 2.Arm 51 is provided with a ventilation duct and a contrast medium supply pipe.The ventilation duct of arm 51 is opened, so that air bag 6 is bled, the contrast medium supply pipe of arm 51 is opened then, comes swelling gasbag 6 with feed fluid such as normal saline in air bag 6.
Interior central siphon 3 is provided with two chambeies, i.e. first chamber and second chamber.First chamber is as the space of extending guide wire 16 and as fluid passage.Second chamber is as the space of extension wire, and this lead is used to transmit the information that is provided by the supermedial thermocouple 12 of exposure section that is attached at interior central siphon 3.
The temperature of contained liquid is measured by the thermocouple on the central siphon 3 in being attached at 12 in the air bag 6.The lead of thermocouple 12 extends by second chamber of interior central siphon 3 and is connected on the thermometer 42.The temperature of contained liquid in thermometer 42 pilot balloons 6.
The heat-stable elastic antithrombotic resin of air bag 6 usefulness is made.Under swelling state, as shown in fig. 1, the shape of air bag 6 is as Bulbus Allii Cepae.
Radio-frequency electrode 8 comprises many electrode wires 8a.The number of electrode wires 8a is several to tens.Move vertically and when reducing to rotate interval between front sleeve 20 and the rotation back sleeve 21, rectilinear basically electrode wires 8a bends to arch for outer central siphon 2 when interior central siphon 3 communicates, make radio-frequency electrode 8 become one substantially as the shape of basket or Bulbus Allii Cepae.If electrode wires 8a makes with marmem, electrode wires 8a can accurately change its shape basically between rectilinear form and the arch so.The front-end and back-end part of electrode wires 8a has been coated with resin, to prevent the excessive radio frequency heating of these two end sections.
Radio-frequency signal generator 40 offers radio-frequency electrode 8 with the radio-frequency (RF) energy of the megahertz order of magnitude (as 13.56MHz).Like this, by the capacitive radio frequency heating in the part of the patient body between the lip-deep antielectrode 53 has produced heat in radio-frequency electrode 8 with attached to the patients back shown in Fig. 3.
Radio-frequency electrode 8 is connected on the contact ring 25 of rotation end sleeve 23 by spiral type lead-in wire 10.Be bearing on the pantograph and be connected to brush 29 on the radio-frequency signal generator 40 and keep and the contacting of contact ring 25, so that provide radio-frequency (RF) energy to radio-frequency electrode 8.Radio-frequency electrode 8 is rotated, so that produce more uniform rf electric field around radio-frequency electrode 8.
Reduction gearing 35 is that the velocity of rotation of the output shaft of motor 38 is reduced to a low output speed with input speed.The rotatory force of motor 38 is delivered to rotation end sleeve 23 by reduction gearing 35 and gear 26.23 the rotation of rotation end sleeve 10 is delivered to rotation back sleeve 21 by going between, to rotate the electrode wires 8a in the air bag 6.Therefore, the liquid that is full of swelling gasbag 6 is subjected to the stirring of electrode wires 8a and prevents because the irregular Temperature Distribution that convection current causes and make temperature distribution homogenization in the liquid that is full of air bag 6.Like this, near the temperature of liquid the temperature of liquid in air bag 6 centers, air bag 6 walls and the temperature of the tissue 18 that contacts with air bag 6 can both equate.Therefore, measure and can accurately represent the temperature of the tissue 18 that contacts with air bag 6 by the temperature of liquid of center in the air bag 6 of thermometer 42 written instructions by thermocouple 12.
When radio-frequency (RF) energy when radio-frequency electrode 8 provides, the temperature of liquid is measured by the thermocouple 12 at the exposure section middle part of central siphon 3 in being placed in, and the output of radio-frequency signal generator 40 is controlled with feedback controling mode, makes to be full of the liquid heat of air bag 6 to optimum temperature.Therefore, the tissue 18 that contacts with air bag 6 can heat with optimum temperature.
The basket formula radio-frequency electrode 8 of rotation produces a more uniform rf electric field, and stirs the liquid that is full of air bag 6.Like this, the intravital Temperature Distribution of liquid is homogenized, and the tissue that contacts with air bag 6 can accurately heat with wanted temperature.
The operation of radio frequency steam ductus bursae 1 when being used for pulmonary venous electricity isolation with the treatment auricular fibrillation will be described below.
Fig. 3 helps explanation to be used for the burn figure of operation of tissue 18 in the atrium 19 around the mouth 17a of pulmonary vein 17 of heat.Arm 51 by outer central siphon 2 infeeds air bag 6 with normal saline solution and the circulation of normal saline solution sucking-off air bag 6 is repeated several times, to clean the air in the air bag 6.As shown in Fig. 4 (a), the air bag 6 flat and interior central siphon 3 that contracts stretches out from outer central siphon 2 fully, make the distance between rotation anterior cannula 20 and the rotation rear sleeve 21 increase to the limit, and the electrode wires 8a of radio-frequency electrode 8 before radio frequency steam ductus bursae 1 inserts pulmonary vein 17 basically rectilinearity stretch out.In this state, the diameter of air bag 6 is reduced to minima.Then, air bag 6 inserts pulmonary vein 17.Near operation radio frequency steam ductus bursae 1 and air bag 6 is placed in the destination organization 18.Then, as shown in Fig. 4 (a), central siphon 3 in drawing back infeeds air bag 6 and swelling gasbag 6 by arm 51 with contrast medium and normal saline solution.Because rotation front sleeve 20 moves towards rotation back sleeve 21, so electrode wires 8a bends to arch.Like this, radio-frequency electrode 8 expand into a basket shape in air bag 6.Fine operate radio frequency steam ductus bursae 1, and air bag 6 is contacted with destination organization 18.
Then, starting motor 38 rotates to drive rotation end sleeve 23 by reduction gearing 35.The rotation of rotation end sleeve 23 passes to rotation back sleeve 21 by the spiral type lead-in wire 10 that extends by conduit 4.Therefore, in air bag 6, expand into radio-frequency electrode 8 rotations of basket shape and stir the liquid that is full of air bag 6.
Subsequently, radio-frequency signal generator 40 is at the antielectrode 53 that is attached to patients back be connected between the contact ring 25 on the radio-frequency electrode that expand into basket shape 8 of radio frequency steam ductus bursae 1 and apply a radio-frequency current such as 13.56MHz.A radio-frequency current flows by the brush 29 that contacts with contact ring 25.Therefore, air bag 6 and the tissue 8 that is in contact with it are owing to be accompanied by the frequency medium that the radio frequency capacitive character heats and heated.Though, if liquid contained in the air bag 6 is not agitated, so because convection current, the temperature of air bag 6 middle and upper parts will be higher than the temperature of air bag 6 middle and lower parts, but, because liquid is subjected to expanding into the stirring of the rotation radio-frequency electrode 8 of basket shape, so the Temperature Distribution of contained liquid is uniform in the air bag 6.If radio-frequency electrode 8 also remains in the air bag 6 regularly with air bag 6 misalignment, organize 8 to be heated brokenly so.Because radio-frequency electrode 8 is rotated, thus the uniform rf electric field that around it, produces, and air bag 6 and tissue 18 heat and thermally equivalent by radio frequency.
The turnbarrel of having assembled electrode wires 8a around 20 in the air bag 6 and 21 neighbouring part have by superheated tendency.By making turnbarrel 20 and 21, by carrying out coating for the part of electrode 8a, and/or, can avoid this kind overheated by central siphon 3 in passing with the cold water circulation with resin with the little material of dielectric constant such as resin or ceramic material.
Like this, pulmonary vein 17 can be isolated by burn tissue 18 incoming calls around the annulus of pulmonary vein 17 in atrium 19 of heat, suffers from the patient of auricular fibrillation with medical treatment safely.
Radio frequency steam ductus bursae 1 in the second embodiment of the invention is described below.Radio frequency steam ductus bursae 1 comprises a blood circulation 60, is used for making the contained liquid circulation of air bag 6, so that the temperature distribution homogenization in the liquid.A part that extends in the interior central siphon 3 in the air bag 6 is provided with a plurality of small nozzles 64.Blood circulation 60 comprises a temperature controller 66 and a fluid Supplying apparatus 62, the liquid of central siphon 3 remained on for example 37 ℃ in temperature controller 66 was used for will wait infeeding, and fluid Supplying apparatus 62 liquid by the predetermined temperature of temperature controller 66 controls can be infeeded in central siphon 3 and the liquid that will spray by small nozzle 64 by the suction of the annulus between interior central siphon 3 and the outer central siphon 2 air bag 6.When expanding, air bag 6 has ellipsoidal shape.Be wound in to radio-frequency electrode 8 spiral types on the part of the interior central siphon 3 that in air bag 6, extends.Radio-frequency electrode 8 10 is connected on the radio-frequency signal generator 40 by going between.The temperature of contained liquid is measured and is monitored with the method for mentioning in the description that is similar to first embodiment with thermocouple 12 in the air bag 6, and the radio-frequency (RF) energy of radio-frequency electrode 8 of giving to be supplied is according to the temperature control of measuring.
As shown in Figure 5, for example be controlled at 37 ℃ circulating fluid 70 by temperature controller 66 and be heated to 44 ℃ during by the extending in the part in the air bag 6 and spray into air bag 6 of interior central siphon 3 by small nozzle 64 when it.The temperature that sprays into the circulating fluid 70 of air bag 6 drops to 43.5 ℃, and its temperature further drops to 43 ℃ during the front end of central siphon 2 outside circulating fluid 70 arrives.Therefore circulating fluid 70 is maintained at about 43.5 ℃ by blood circulation 60 circulations equably with contained liquid in the air bag 6.
To describe being used to shown in Fig. 5 below and cure the radio frequency steam ductus bursae 1 partly of the arteriosclerosis shown in Fig. 7.
The air bag 6 of radio frequency steam ductus bursae 1 is contracted flat and is inserted carotid ill part 68 by femoral artery, as shown in Fig. 6 (a).Then, contrast medium and normal saline solution infeed air bag 6 by the arm 51 that is attached on the outer central siphon 2.Therefore, air bag 6 is expanded and is expanded narrow in the ill part 68.In this state, started and be applied to radio-frequency electrode 8 and attached to the radio-frequency voltage of the 13.56MHz between the antielectrode 53 of patient's back.
The tissue that can heat ill part 68 equably of radio frequency steam ductus bursae 1 with optimum temperature.Like this, do not influence normal structure such as endothelium by damaging parts 68 20 minutes or longer time 43.5 ℃ of carotid tremulous pulse medicated porridge sclerosis of heating, carotid atherosclerotic lesions part 68 can become stable by the apoptosis of turgid cell or hypertrophy smooth muscle cell macrophage (being unstable factor).
Radio frequency steam ductus bursae 1 can be used for the hyperthermia treatment of cancer.Verified, by cancerous cell being heated 20 minutes or the longer time at 43.5 ℃, can be with its control or elimination.
With reference to Fig. 8 of the radio frequency steam ductus bursae 1 of representing third embodiment of the invention, radio frequency steam ductus bursae 1 comprises air bag 6 and agitating device 80, and device 80 is used to stir air bag 6 contained liquid, so that the temperature distribution homogenization in the liquid.
Agitating device 80 comprises connection tube 82 and vibration machine 81, connection tube 82 is connected on the outer central siphon 2 and opening feeds a circular passage 83 that is limited by outer central siphon 2 and the interior central siphon 3 by outer central siphon 2 extensions, and this vibration machine 81 (for example being vibrative diaphragm pump) applies vibration to the liquid that is full of annular channel 83.Connection tube 82 utilizes annular channel 83 to be communicated with air bag 6.The vibration 86 of for example about 1Hz that is produced by vibration machine 81 is by being full of the liquid propagation of connection tube 82 and annular channel 83.Therefore, because the interaction between vibration liquid and the gravity, produce eddy current 85 in the contained liquid of air bag 6.Therefore these eddy current make the intravital temperature distribution homogenization of contained liquid in the air bag 6 by indefinite direction agitated liquid.Like this, the atheroma that can form in the heat tissue 68 equably with optimum temperature.
A radio-frequency electrode 8 that is similar to the interior central siphon 3 of spiral type ground winding of the radio-frequency electrode 8 shown in Fig. 5 is used for the radio frequency heating.
When air bag 6 usefulness suitable elastic materials are made, because the vibration 86 that vibration machine 81 produces, can produce satisfied eddy current in the contained liquid in the air bag 6.
From as seen above-mentioned, radio frequency steam ductus bursae of the present invention can heat the tissue that contacts with air bag with optimum temperature equably by the radio frequency heating, and can form a three-dimensional annular distance layer that penetrates safely, and can be owing to forming thrombosis or organizing carbonization to produce ulcer.Therefore, can treat arrhythmia safely and reliably, as the auricular fibrillation that causes owing to premature contraction from pulmonary vein and mouth thereof by pulmonary venous isolation.
Because can be with optimum temperature heat tissue equably, thus can by with predetermined temperature heating arteriosclerosis part so that be subjected to apoptosis and do not influence normal structure such as endothelium is stablized this arteriosclerosis part as the turgid cell of unstable factor or outgrowth smooth muscle cell.
Though described the present invention, obviously wherein can carry out many variations and modification with the preferred embodiment that has particularity to a certain degree.
For example, in a preferred embodiment of the invention, antielectrode 53 is lip-deep attached to patient body.But the position of antielectrode 53 is not limited to the patient body surface.On the position that antielectrode 53 can be placed in the airbag wall or air bag is interior, perhaps antielectrode 53 can be placed on the position of contiguous air bag.
Therefore be appreciated that the present invention can implement and do not depart from its scope and spirit with being different from the specifically described mode of this paper.
Claims (7)
1. radio frequency steam ductus bursae comprises:
A conduit comprises that an outer central siphon and passes this outer central siphon and the interior central siphon that can slide with respect to outer central siphon;
An expansive air bag, can expand and with the leading section separately of central siphon inside and outside a target infringement contact and is installed between;
A radio-frequency electrode is used for antielectrode combination and radio-frequency (RF) energy is provided, and stretches in the airbag wall or in the air bag, described antielectrode is configured on the precalculated position;
A lead-in wire is electrically connected on this radio-frequency electrode;
A temperature sensor, can the perception air bag in the temperature of contained liquid; And
A temperature distribution homogenization mechanism is used for making the temperature distribution homogenization of the contained liquid of air bag;
Wherein this temperature distribution homogenization mechanism is a stirring mechanism, is used for stirring the contained liquid of air bag, and this stirring mechanism comprises:
A connection tube that is connected on the outer central siphon utilizes the passage that is limited by outer central siphon and interior central siphon to be communicated with this air bag; And
A vibration generating mechanism is used for vibration is applied to the liquid that is full of this connection tube and passage.
2. according to the described radio frequency steam of claim 1 ductus bursae, it is characterized in that this vibration generating mechanism is applied to vibration on the liquid that is full of this connection tube and passage, make in air bag, to produce eddy current in the contained liquid.
3. according to claim 1 or 2 described radio frequency steam ductus bursaes, it is characterized in that, this radio-frequency electrode the air bag spiral be wrapped in around the part of central siphon in this.
4. according to the described radio frequency steam of claim 1 ductus bursae, it is characterized in that this air bag is made with a kind of antithrombotic heat-stable elastic resin.
5. according to the described radio frequency steam of claim 1 ductus bursae, it is characterized in that this precalculated position is a patient position on one's body, and antielectrode is attached on one's body the patient.
6. according to the described radio frequency steam of claim 1 ductus bursae, it is characterized in that this precalculated position is in the airbag wall or an interior position of air bag.
7. according to the described radio frequency steam of claim 1 ductus bursae, it is characterized in that this precalculated position is the position of a contiguous air bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03107981 CN1264482C (en) | 2003-03-28 | 2003-03-28 | RF hot air bag guide tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03107981 CN1264482C (en) | 2003-03-28 | 2003-03-28 | RF hot air bag guide tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1533748A CN1533748A (en) | 2004-10-06 |
| CN1264482C true CN1264482C (en) | 2006-07-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03107981 Expired - Lifetime CN1264482C (en) | 2003-03-28 | 2003-03-28 | RF hot air bag guide tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1264482C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103519882A (en) * | 2012-07-07 | 2014-01-22 | 李莉 | Multi-electrode renal artery ablation catheter |
| CN103796603A (en) * | 2011-07-29 | 2014-05-14 | 麦德托尼克消融前沿有限公司 | Mesh-overlayed ablation and mapping device |
| CN103860258A (en) * | 2012-12-12 | 2014-06-18 | 北京中孵友信医药科技股份有限公司 | Self-adaptive annular positioning endovascular catheter |
| CN106691585A (en) * | 2016-12-24 | 2017-05-24 | 迈德医疗科技（上海） 有限公司 | Radiofrequency ablation electrode assembly |
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| US10314649B2 (en) * | 2012-08-02 | 2019-06-11 | Ethicon Endo-Surgery, Inc. | Flexible expandable electrode and method of intraluminal delivery of pulsed power |
| CN102920506B (en) * | 2012-10-17 | 2015-11-25 | 上海安通医疗科技有限公司 | A kind of multipole umbrella radio frequency ablation catheter |
| CN102940525A (en) * | 2012-10-17 | 2013-02-27 | 上海安通医疗科技有限公司 | Multi-pole helicoidal radiofrequency ablation conduit |
| US9597140B2 (en) * | 2014-01-31 | 2017-03-21 | Medtronic Cryocath Lp | Accessory to allow sensing at balloon interface |
| CN106362296A (en) * | 2016-08-26 | 2017-02-01 | 詹佳境 | Radio frequency physiotherapy instrument for gynecological department |
| CN108680396B (en) * | 2018-05-22 | 2023-04-28 | 徐州蓝湖信息科技有限公司 | Biological sample collection expander |
| CN112807659B (en) * | 2021-01-18 | 2022-05-17 | 佛山市顺德区跨速头盔有限公司 | Knee pad capable of reducing sports injury |
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2003
- 2003-03-28 CN CN 03107981 patent/CN1264482C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796603A (en) * | 2011-07-29 | 2014-05-14 | 麦德托尼克消融前沿有限公司 | Mesh-overlayed ablation and mapping device |
| CN103519882A (en) * | 2012-07-07 | 2014-01-22 | 李莉 | Multi-electrode renal artery ablation catheter |
| CN103860258A (en) * | 2012-12-12 | 2014-06-18 | 北京中孵友信医药科技股份有限公司 | Self-adaptive annular positioning endovascular catheter |
| CN106691585A (en) * | 2016-12-24 | 2017-05-24 | 迈德医疗科技（上海） 有限公司 | Radiofrequency ablation electrode assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1533748A (en) | 2004-10-06 |
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Effective date of registration: 20170324 Address after: Kanagawa Patentee after: Japan electric physiological catheter Co.,Ltd. Address before: Kanagawa Patentee before: Satake Shutaro |
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