CN109223169A - Pulmonary vein is electrically isolated balloon structure - Google Patents
Pulmonary vein is electrically isolated balloon structure Download PDFInfo
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- CN109223169A CN109223169A CN201811347415.0A CN201811347415A CN109223169A CN 109223169 A CN109223169 A CN 109223169A CN 201811347415 A CN201811347415 A CN 201811347415A CN 109223169 A CN109223169 A CN 109223169A
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- sacculus
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12136—Balloons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
- A61B5/283—Invasive
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
- A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
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Abstract
The present invention provides a kind of pulmonary vein electric isolution balloon structure, it includes the first sacculus, the second sacculus and foley's tube that the pulmonary vein, which is electrically isolated balloon structure, first sacculus and second sacculus are arranged on foley's tube, first sacculus is freezing sacculus, second balloon surface is provided with several electrodes, second sacculus is arranged in front end, and the foley's tube includes the passage tube for being respectively turned on first sacculus and second sacculus and the electrode connecting line for connecting the electrode.It is electrically isolated in balloon structure in pulmonary vein provided by the invention, when the first sacculus carries out cryoablation, the potential change of orifices of pulmonary veins can be preferably collected by the electrode that the second balloon surface is arranged, doctor can be helped to judge the cryoablation time by potential change result, the second sacculus can play the role of blocking orifices of pulmonary veins distal end blood simultaneously, effectively blood flow is avoided to wash away to the first sacculus and influence refrigerating effect, promotes success rate of operation.
Description
Technical field
The present invention relates to the field of medical instrument technology, in particular to a kind of pulmonary vein is electrically isolated balloon structure.
Background technique
Auricular fibrillation (atrial fibrillation, abbreviation atrial fibrillation) is one of clinical most common arrhythmia cordis, hair
Sick rate increases with age, and with compared with age non-patients with atrial fibrillation, patients with atrial fibrillation quality of life is often poor, and often
With diseases such as hypertension, heart failure, therefore its thromboembolic complication and lethality are higher.In order to solve this hardly possible
Topic, a kind of ablation mode --- freezing sacculus ablation (cryoballoon ablation) beginning is clinically answered
With.Different from traditional RF ablation, freezing sacculus ablation is to block up sacculus to Pulmonary venous vestibule, extremely by low temperature energy transmission
Expandable prosthetic to cause direct or indirect damage to sacculus perienchyma, and then achievees the purpose that pulmonary vein is electrically isolated.
Therefore, in order to further increase surgical effect, it is necessary to realize that pulmonary vein electric isolution provides better Medical treatment device
Tool is to solve the problems, such as that cardiac electric signals test in orifices of pulmonary veins distal end is inconvenient in the course of surgery, and more importantly preferably
Orifices of pulmonary veins is blocked to reduce blood flow to freezing position and wash away, the temperature of injury tissue is extremely capable of so as to fast cooling.
Summary of the invention
The purpose of the present invention is to provide a kind of pulmonary veins to be electrically isolated balloon structure, to solve the prior art in surgical procedure
The bad or orifices of pulmonary veins distal end cardiac electric signals of middle closure test problem to be improved.
In order to solve the above technical problems, the present invention, which provides a kind of pulmonary vein, is electrically isolated balloon structure, the pulmonary vein electricity every
It include the first sacculus, the second sacculus and foley's tube from balloon structure, first sacculus and second sacculus are arranged at
On foley's tube, first sacculus plays refrigeration, and second balloon surface is provided with several electrodes, second sacculus
It is arranged in front end, the foley's tube is provided at least two passage tubes and electrode connecting line beam, two passage tubes
It is respectively turned on first sacculus and second sacculus, the electrode connecting line beam is for being correspondingly connected with the electrode.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, several electrodes are in second balloon surface
Spot distribution or zonal distribution.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, the part electrode covers second balloon inflation
When longitudinal maximum gauge at.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, longitudinal direction diameter is greater than cross when second balloon inflation
To diameter.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, the foley's tube further includes that push rod and activity connect
Fitting, the active connection are set between first sacculus and second sacculus, push institute by the push rod
It states active connection and adjusts spacing between first sacculus and second sacculus.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, first sacculus and second sacculus have respectively
There is full mode independent, the passage tube of first sacculus is to freeze full pipeline, the channel of second sacculus
Pipeline is that liquid fills pipeline.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, the liquid that the liquid fills in pipeline includes radiography
Agent or physiological saline.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, is pushed away between first sacculus and second sacculus
The spacing sent is 3mm~30mm.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, the passage tube of second sacculus is arranged described
In push rod.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, the front end of the foley's tube is provided with locating piece.
Optionally, it is electrically isolated in balloon structure in the pulmonary vein, the locating piece includes being set to first sacculus
On the first locating piece and/or the second locating piece for being set on second sacculus.
Optionally, the pulmonary vein be electrically isolated balloon structure in, second sacculus be compliance or semi-compliant sacculus,
The material of second sacculus includes polyurethane, nylon or modification of nylon.
In conclusion being electrically isolated in balloon structure in pulmonary vein provided by the invention, cryoablation is carried out in the first sacculus
When, the potential change of orifices of pulmonary veins can be preferably collected by the electrode that the second balloon surface is arranged, by potential change result
Doctor can be helped to judge the cryoablation time, while the second sacculus can play the role of blocking orifices of pulmonary veins distal end blood, effectively
Avoid blood flow from washing away to the first sacculus and influence refrigerating effect, thus make operation in pulmonary vein obtain stable low temperature ring
Border promotes success rate of operation.
Detailed description of the invention
Fig. 1 is that the pulmonary vein of the embodiment of the present invention is electrically isolated the diagrammatic cross-section of balloon structure；
Fig. 2 is the structural schematic diagram of the band electrode of the second sacculus of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the Spot electrodes of the second sacculus of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of second sacculus of another embodiment of the present invention.
Specific embodiment
In order to keep objects, features and advantages of the present invention more obvious and easy to understand, attached drawing is please referred to.It should be clear that this explanation
Book structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate the revealed content of specification, for being familiar with this
The personage of technology understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical essence meaning
Justice, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the effect of present invention can be generated and institute
Under the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
As shown in Figure 1, the present invention provides a kind of pulmonary vein electric isolution balloon structure, the pulmonary vein is electrically isolated balloon structure
Including the first sacculus 10, the second sacculus 20 and foley's tube 30, first sacculus 10 and second sacculus 20 are arranged at
On foley's tube 30, first sacculus 10 plays refrigeration, and 20 surface of the second sacculus is provided with several electrodes 21, electrode
And second the modes such as can be bonded or be welded between sacculus by glue and fix, the setting of the second sacculus 20 is right in front end
It should be used as the appellation into one end ends such as body end, the ends head (end) in front end, the foley's tube 30 is provided at least two channels
Pipeline 31 and electrode connecting line beam, two passage tubes 31 are respectively turned on first sacculus 10 and second sacculus
20, balloon inflation and contraction are made by passage tube, this electrode connecting line beam of institute is for being correspondingly connected with the electrode 30, i.e.,
It is respectively connected to independent connecting line (or conducting wire) in electrode connecting line beam on a certain electrode, realizes the current potential of each single electrode
Measurement, electrode connecting line beam may be provided in the gap of interior independent seal wire access or inner tubal wall and outer tube wall.
It specifically may include freezing controller, foley's tube and its attachment composition that pulmonary vein, which is electrically isolated ablation system to be,.When
The sacculus of refrigeration is played by being conveyed into left room, external controller is controlled, while observing pulmonary vein potential.Can be used as
Liquid refrigerant N2O is sent by tiny passage tube 31 to sacculus, and being exchanged by liquid gas reduces temperature, gaseous state N2O passes through negative
Pressure siphons away, and enters rewarming process, carries out cooling-thaw cycles etc., damages surrounding tissue and cell.Pulmonary vein electric isolution disappears
It is as follows to melt the mechanism for causing tissue and cellular damage: (1) sacculus for playing refrigeration can cause shape in tissue in cooling procedure
At ice crystal, lead to tissue coup injury and necrosis, eucaryotic cell structure can also be destroyed, lead to Apoptosis；(2) surrounding tissue and thin
Born of the same parents lead to microcirculation disorder, injury tissue and cell since ice crystal dissolves during rewarming, thus selectable as one kind,
The medical technology of effective treatment atrial fibrillation.
As shown in Figures 2 and 3, several electrodes 21 are in spot distribution or band-like point on 20 surface of the second sacculus
Cloth, spot distribution can be various shapes such as circular electrode dispersed distribution in balloon surface, and spot distribution can realize more surveys
Point is measured, zonal distribution can be various strip-like appearances or band like form is distributed in balloon surface, and zonal distribution can be realized more preferably
Covering to extract the pulmonary vein potential of irregular form, specific distribution mode can be using being uniformly distributed or symmetrically divide
Cloth realizes the covering of measured zone.The prior art needs to use with cyclization lung mapping catheter in ring pulmonary vein cryoablation,
Ring lung mapping catheter is pierced by the foley's tube intermediate cavity of refrigeration from, reaches orifices of pulmonary veins distal end, mapping heart telecommunications
Number conduction, and cryoablation it is postoperative evaluation and test disorder cardiac electric signals whether successfully blocked.And usual ring lung mapping
The expense of conduit significantly increases patient medical cost at 10,000 yuan or more.The present invention is improved for the prior art, benefit
Ring lung mapping catheter is replaced with the structure of the double sacculus in front and back, to reach the use for reducing medical instrument, simplifies surgical procedure, contracting
On the basis of short operating time, medical treatment cost is reduced.In operation, the most common problem include as block it is bad caused by telecommunications
Number isolation is insufficient, when the second sacculus in the present invention is expanded from pulmonary vein distal end, pulmonary vein can be blocked to be back to the blood of heart
Stream washes away freezing band, to reach lower temperature within the faster time, realizes effective pulmonary vein potential isolation.
In order to preferably realize potential acquisition effect, the part electrode 21 covers longitudinal when second sacculus 20 expansion
Maximum gauge at, that is, maximum diameter region at least longitudinal when the second sacculus 20 expands is provided with electrode 21, here
Longitudinal direction be the transverse direction extended relative to foley's tube 30, vertical expansion at this time can make the second sacculus be attached to blood vessel
On inner wall, also just reaches electrode and contact effect preferably to complete potential measurement.Wherein the quantity of electrode is not limited
System usually can be used 8-20 electrode and acquire enough electric signals.
As shown in figure 4, in order to improve detection effect, longitudinal direction diameter is greater than trans D when second balloon inflation, can
Pulmonary vein signal acquisition can also preferably be realized at a distance from region with freezing by reducing electrode, that is, by the shape of the second sacculus
It is designed to oblate spheroid (similar flying saucer), to be further reduced electrode and freeze the spacing of sacculus, the second sacculus prolongs along foley's tube
The diameter in the transverse direction in direction is stretched less than the longitudinal diameter perpendicular to foley's tube, longitudinal diameter and trans D at this time
When being often referred to expansion with symmetrical second balloon center vertical and horizontal maximum gauge, so as to reach electrode measurement simultaneously
It is required that and reduce the purpose of distance, such as longitudinal diameter is twice or more of trans D.
In order to adjust the relative position of operation, the foley's tube 30 further includes push rod and active connection, the work
Follower link is set between first sacculus and second sacculus, and active connection can be telescoping tube or embedding tube
It can be the rigid conductive structure that one end is fixed on the second sacculus Deng, push rod, and exert a force in the other end, pass through the push
Bar pushes the active connection to adjust the spacing between first sacculus and second sacculus, to adjust the second sacculus
The depth in pulmonary vein, to adapt to the angio-architecture of different crowd, make the second sacculus play preferably block blood flow effect and
Reach preferable potential measurement position.
In another embodiment, the conducting wire of electrode may be provided at the second balloon interior, electrode in the second sacculus outer surface,
By glue sealing, conducting wire can be multilayer insulated wire or further exist for the aperture on the second sacculus that the conducting wire of electrode is passed through
It is cased with ultra-thin insulating sleeve outside conducting wire, it will not mutual conduction in liquid environment.There there is no the surface of the second sacculus in this scheme
Arrange conducting wire, frictional force when can reduce conveying and the decreasing insulating that may cause influence electric signal extraction.In this scheme
Push rod distal end is fixed in the distal end of sacculus in such a way that glue is bonded or welded, and sacculus is bonded or is welded proximally by glue
The mode connect is fixed on distal outer tube, and push rod and outer tube can be in axially opposing movements.Since this sacculus radial dimension is much larger than
Sacculus can sufficiently be extended by pushing push rod to reduce outer diameter when not having injecting fluid, be more advantageous to and wear by axial dimension
Cross the matched cold therapy sacculus silk-guiding channel used；After injecting fluid, push rod reduction and distal outer tube can be withdrawn
Distance so that sacculus radial dimension is bigger.It should be noted that conducting wire is free state between push rod and outer tube, have
Certain amount of bow, so that will not be pulled off when push push rod.
In the present embodiment, first sacculus 10 and second sacculus 20 are respectively provided with full side independent
Formula, the passage tube 31 of first sacculus 10 are that freezing (such as liquid gas) fills pipeline, make the first sacculus 10 during surgery
Play cryoablation, the passage tube 31 of the second sacculus 20 is that liquid fills pipeline, can be realized using liquid preferably full
Mode.
Optionally, the liquid that the liquid fills in pipeline includes contrast agent or physiological saline, and contrast agent can be respectively adopted
Or physiological saline makes the second balloon inflation, contrast agent can enhance medical image observing effect, and common high density contrast agent has sulphur
Sour barium and Operand, physiological saline are widely portable to various medical instruments and operation.
Optionally, the spacing pushed between first sacculus 10 and second sacculus 20 is 3mm~30mm, is made adjustable
Whole length range is moved forward and backward in internal tube by pushing or withdrawing push rod between 3mm~30mm, thus adjusts the
Position of one sacculus with respect to the second sacculus and the depth in pulmonary vein.Minimum spacing is determined by inner tube distal length, between maximum
Away from being realized by catheter interior limiting device, spacing usually herein is smaller to be more conducive to acquire the electric signal for freezing position.
In the present embodiment, the passage tube of second sacculus 20 is arranged in the push rod, i.e. the second sacculus
Full pipeline can be a chamber in push rod, and one end has opening in the second sacculus, or can also be arranged to independence
Pipeline is fixed on foley's tube.First sacculus is to block up sacculus to Pulmonary venous vestibule, will be compared with low temperature energy transmission to sacculus week
It encloses, to cause direct or indirect damage to sacculus perienchyma, and then achievees the purpose that pulmonary vein is electrically isolated, the second sacculus
Arrive at certain depth in pulmonary vein enables electrode to be effectively bonded in the pulmonary vein of different sizes and form in expansion process
Chamber, and play the role of blocking Pulmonary Venous Flow, prevent influence when freezing of the blood flow to the first sacculus.The prior art
In, after playing the balloon occluder orifices of pulmonary veins of refrigeration, sacculus other parts still may be by blood flow in atrium and in pulmonary vein
It washes away, and this blood flow washes away the progress for being unfavorable for ablation procedure, can produce bigger effect to cryoablation temperature, even results in
The failure entirely performed the operation.
For the ease of medical observation, the front end of the foley's tube is provided with locating piece 40, by being arranged in foley's tube
The locating piece 40 of front end can fast implement the function of positioning, by position in the quick accurately art of positioning devices so as to medical matters
Personnel are operated, and medical observation device includes the radionetric surveys instrument such as CT, locating piece can be fine and close metalwork or
Metal coating etc. and the medical development material being used cooperatively etc., the preferably optional annular of shape or circle etc. and quickly knowledge
Not, locating piece can be nested in the distalmost end (entering body end) of foley's tube, and what foley's tube can be used as other each structures depends on support
Handle etc. can be arranged to be convenient for operating in art by suitable position at one end in main body.
Further, the locating piece includes the first locating piece being set on first sacculus and/or is set to
The second locating piece on second sacculus, with adjustable berth away from active connection when embodiment in, pass through two
The distance between positioning ring can help patient preferably to judge the spacing between the first sacculus and the second sacculus, when the first ball
Capsule and the second sacculus spacing it is fixed when can only wherein one upper locating piece is set.Locating piece may be disposed at the centre bit of sacculus
Region is set, also can be set in sacculus side；Locating piece, which can usually depend on, to be arranged on the respective pipeline of two sacculus, can also be set
It sets in the cystic structures of sacculus.
In the present embodiment, second sacculus 20 is compliant balloon, and compliance refers to flexible object outside
The lower ability that deformation occurs of power effect, can also be called semi-compliant sacculus, be bonded sacculus can effectively in expansion process
The pulmonary vein inner cavity of different sizes and form, the material of second sacculus include polyurethane, nylon or modification of nylon.The present invention
The pulmonary vein of offer is electrically isolated the sacculus of balloon structure in the preoperative in contraction state, in order to enter body from surgical wound
Interior, sacculus just needs to expand and subsequent operation when reaching pulmonary vein.It is understood that lung of the invention is quiet
The other end that arteries and veins is electrically isolated balloon structure is provided with other medical equipments, for example, being used for the extraction into two passage tubes respectively
Liquid/gas body to make the first sacculus and the second balloon inflation or the equipment of contraction respectively, that is, includes the freezing for realizing the first sacculus
Effect and the plugging action for realizing the second sacculus, while electrode connecting line Shu Yiduan is connected to special equipment and realizes that electrode powers on
The structure of the portion of the handle such as the reading of position signal and necessary handle.
The present invention is used in ring pulmonary vein cryoablation, and ring pulmonary vein mapping is carried out while carrying out cryoablation,
The whether completely isolated pulmonary vein electric signal of cryoablation is verified, while mapping sacculus plays the work for blocking orifices of pulmonary veins Distal blood flow
With, while saving operating time, raising success rate of operation, and the use of other medical device products can be reduced, meet
Health economics.Second sacculus of the invention plays the role of blocking pulmonary vein Distal blood flow in cryoablation pulmonary vein, together
When by this second balloon surface have a band-like or Spot electrodes, record the potential change of orifices of pulmonary veins during cryoablation, this
Second sacculus, which can be, passes through from the first balloon lumen and is placed on the first balloon distal, or is fixed on the first balloon distal, with
It is used cooperatively.
In conclusion being electrically isolated in balloon structure in pulmonary vein provided by the invention, cryoablation is carried out in the first sacculus
When, the potential change of orifices of pulmonary veins can be preferably collected by the electrode that the second balloon surface is arranged, by potential change result
Doctor can be helped to judge the cryoablation time, while the second sacculus can play the role of blocking orifices of pulmonary veins distal end blood, effectively
Avoid blood flow from washing away to the first sacculus and influence refrigerating effect, thus make operation in pulmonary vein obtain stable low temperature ring
Border promotes success rate of operation.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (12)
1. a kind of pulmonary vein is electrically isolated balloon structure, which is characterized in that it includes the first ball that the pulmonary vein, which is electrically isolated balloon structure,
Capsule, the second sacculus and foley's tube, first sacculus and second sacculus are arranged on foley's tube, first ball
Capsule plays refrigeration, and second balloon surface is provided with several electrodes, and second sacculus is arranged in front end, and the sacculus is led
Pipe is provided at least two passage tubes and electrode connecting line beam, two passage tubes be respectively turned on first sacculus and
Second sacculus, the electrode connecting line beam is for being correspondingly connected with the electrode.
2. pulmonary vein according to claim 1 is electrically isolated balloon structure, which is characterized in that several electrodes are described the
Two balloon surfaces are in spot distribution or zonal distribution.
3. pulmonary vein according to claim 2 is electrically isolated balloon structure, which is characterized in that described in the electrode covering of part
When the second balloon inflation at longitudinal maximum gauge.
4. pulmonary vein according to claim 1 is electrically isolated balloon structure, which is characterized in that indulged when second balloon inflation
It is greater than trans D to diameter.
5. pulmonary vein according to claim 1 is electrically isolated balloon structure, which is characterized in that the foley's tube further includes pushing away
Bar and active connection are sent, the active connection is set between first sacculus and second sacculus, by described
Push rod pushes the active connection to adjust the spacing between first sacculus and second sacculus.
6. pulmonary vein according to claim 5 is electrically isolated balloon structure, which is characterized in that first sacculus and described the
Two sacculus are respectively provided with full mode independent, and the passage tube of first sacculus is to freeze full pipeline, the second ball
The passage tube of capsule is that liquid fills pipeline.
7. pulmonary vein according to claim 5 is electrically isolated balloon structure, which is characterized in that the liquid fills in pipeline
Liquid includes contrast agent or physiological saline.
8. pulmonary vein according to claim 5 is electrically isolated balloon structure, which is characterized in that first sacculus and described the
The spacing pushed between two sacculus is 3mm~30mm.
9. the pulmonary vein according to any one of claim 5 is electrically isolated balloon structure, which is characterized in that second ball
The passage tube of capsule is arranged in the push rod.
10. pulmonary vein described in any one of -9 is electrically isolated balloon structure according to claim 1, which is characterized in that the ball
The front end of ductus bursae is provided with locating piece.
11. pulmonary vein according to claim 10 is electrically isolated balloon structure, which is characterized in that the locating piece includes setting
In the first locating piece on first sacculus and/or the second locating piece being set on second sacculus.
12. pulmonary vein described in any one of -9 is electrically isolated balloon structure according to claim 1, which is characterized in that described the
Two sacculus are compliant balloon, and the material of second sacculus includes polyurethane, nylon or modification of nylon.
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Application publication date: 20190118 |