CN209091618U - A kind of ambipolar radio frequency ablation probe - Google Patents
A kind of ambipolar radio frequency ablation probe Download PDFInfo
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- CN209091618U CN209091618U CN201821187298.1U CN201821187298U CN209091618U CN 209091618 U CN209091618 U CN 209091618U CN 201821187298 U CN201821187298 U CN 201821187298U CN 209091618 U CN209091618 U CN 209091618U
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Abstract
This technology is related to medical instruments field, a kind of ambipolar radio frequency ablation probe is provided, for effectively applying radio-frequency ablation procedure to cavity type organ, it is especially adapted for use in and radio-frequency ablation procedure is effectively applied to heart, use this ambipolar radio frequency ablation probe, patient is not necessarily to backboard, and need to only puncture a wound hole at femoral vein and can apply heart radio frequency ablation art；A kind of ambipolar radio frequency ablation probe controls handle, conduit and probe including the bundling pipe line for connecting radiofrequency melting instrument；Probe includes pedestal keel and swings the bracket keel that pedestal keel outer end is arranged in, and further includes the main electrode and loop electrode connected firmly at left and right sides of bracket keel respectively, main electrode, loop electrode are connect with RF ablation conducting wire respectively；It is provided with thermocouple terminal in bracket keel main electrode side, thermocouple terminal is connect with thermocouple terminal line.
Description
Technical field
This technology is related to medical instruments field, provides a kind of ambipolar radio frequency ablation probe, for having to cavity type organ
Effect applies radio-frequency ablation procedure, is especially adapted for use in and effectively applies radio-frequency ablation procedure to heart, uses this ambipolar RF ablation
Probe, patient is not necessarily to backboard, and need to only puncture a wound hole at femoral vein and can apply heart radio frequency ablation art.
Background technique
Heart radio frequency ablation art, also known as heart Radiofrequency catheter ablation, abbreviation catheter ablation or RF ablation, are in X
Under the assistance of light angiographic apparatus, electrode catheter is sent into heart particular chamber through vein or arteries, through thigh and neck
Vascular puncture be sent into electrode catheter (2 ~ 3 millimeters of thicknesses) enter in the chambers of the heart, pass through release radiofrequency melting instrument issue frequency
For 300 ~ 750kHz alternating current and be converted to thermal energy and act on local myocardial, make cardiac muscular tissue generate thermal damage so that solidify
Necrosis achievees the purpose that eliminate lesion.Heart radio frequency ablation art has become treatment quickly because its wound is small, success rate is high at present
Property arrhythmia cordis (atrioventricular nodal reentrant tachycardia, A-V reentry tachycardia, atrial tachycardia, auricular flutter, atrium
Trembling, ventricular premature beat and Ventricular Tachycardia etc.) most efficient method.
By electrode working method, heart radio frequency ablation art can be divided into monopole type heart radio frequency ablation art and ambipolar heart
Radio-frequency ablation procedure two major classes.
The patient for receiving monopole type or multiple monopole type heart radio frequency ablation art needs body back to attach loop electrode (back
Plate) it can be worked with constituting the loop of rf.Loop electrode surface can concentrate high-energy, and heating ablation penetrability is strong, the patient feels compared with
Strongly, it is suitable for electrical surgical appliance.
Receive the patient of ambipolar heart radio frequency ablation art, is then not necessarily to backboard, energy directional provided by radiofrequency melting instrument
Deeper skin histology is acted on, for epidermis by protecting, radiationless leakage improves peace in the colleague of guarantee therapeutic effect again
Quan Xing, therapeutic process are almost painless.
Ablation probe used in country's heart radio frequency ablation art is essentially monopole or multiple monopole structure at present.This ablation
For method compares bipolar ablation, patient has pain, and has radiation leakage, and safety is lower.And the heart of the prior art is bipolar penetrates
Frequency ablation scheme each extends into a conduit after need to usually puncturing at patient or so femoral vein, adds additional patient's pain
It is bitter.
Summary of the invention
The purpose of this technology is to provide a kind of ambipolar radio frequency ablation probe, for effectively applying radio frequency to cavity type organ
Ablation, using this ambipolar radio frequency ablation probe, patient is not necessarily to backboard, and need to only puncture a wound hole at femoral vein and be
Radio-frequency ablation procedure can be applied.
The purpose of this technology is achieved through the following technical solutions:
A kind of ambipolar radio frequency ablation probe controls handle, conduit including the bundling pipe line for connecting radiofrequency melting instrument
And probe；Bundling pipe line includes radiofrequency melting instrument interface, the cable for connecting radiofrequency melting instrument；The cable includes thermocouple
Terminal line, two RF ablation conducting wires being connect with radiofrequency melting instrument interface；
Control handle has aperture to control wire casing, probe telescoping with the guiding-tube bend being provided on control handle respectively at middle part
Control wire casing and bracket rotary alignment control slot communicate, and the tube at one end made of tubing is rotatably arranged on control handle, another
The internal movement in end is provided with probe；
Probe includes pedestal keel and swings the bracket keel that pedestal keel outer end is arranged in, and further includes connecting firmly propping up respectively
Main electrode and loop electrode at left and right sides of frame keel, main electrode, loop electrode are connect with RF ablation conducting wire respectively；In bracket
Keel main electrode is provided with thermocouple terminal in 1 side, and thermocouple terminal is connect with thermocouple terminal line；
It further include the guiding-tube bend control mechanism for controlling guiding-tube bend state.
The beneficial effect of this technology is:
When use:
Radiofrequency melting instrument interface is connect with radiofrequency melting instrument.
Ambipolar radio frequency ablation probe is punctured by patient's femoral vein to be entered inside cavity type organ.Probe segment at this time
(removing 1 part of main electrode) closes at catheter proximal end.
Probe is stretched out into conduit.
Bracket keel are expanded to 90 degree axial.
Finally under the assistance of X-ray angiographic apparatus, conduit axial angle is adjusted, is adjusted by guiding-tube bend control mechanism
Conduit radial direction curvature, conduit enter sensitive stove region, until probe contacts musculature.
Adjustment probe overhang in conduit can promote probe segment to apply normal pressure to sensitive stove treatment face, can be real
Existing main electrode and loop electrode are bonded with sensitive stove tissue tight.
Radio-frequency therapeutic equipment can also judge contact situation, i.e., deployable ablation by electrode loop impedance.
By thermocouple, main electrode ablation temperature can be perceived, to realize temperature control RF ablation in radio-frequency ablation procedure.
Above-mentioned ambipolar radio frequency ablation probe, when being used to effectively apply cavity type organ radio-frequency ablation procedure, musculature
Directly by a part of main electrode and loop electrode connection composition RF ablation circuit pathways, patient is not necessarily to backboard, and only need to be
A wound hole is punctured at femoral vein can apply radio-frequency ablation procedure.
As the improvement to this technology, guiding-tube bend control mechanism includes the guiding-tube bend memory bullet that catheter interior is arranged in
Piece, radially opens up guiding-tube bend control steel wire duct in guiding-tube bend memory elastic slice, and guiding-tube bend control steel wire movement is set
It sets and is controlled in steel wire duct, the aperture for being provided with control middle handle and guiding-tube bend control wire casing in guiding-tube bend；
One end that guiding-tube bend control steel wire is located in guiding-tube bend memory elastic slice is free end, the other end and guiding-tube bend
Traction screw connects firmly；
Two lockholes in left and right are opened up in guiding-tube bend control wire casing, guiding-tube bend traction screw is detachably arranged at lockhole
It is interior；
The groove being equipped with for indicating guiding-tube bend angle is also carved on guiding-tube bend control wire casing.
Above-mentioned improvement, it is radial to bending angle to control conduit with the flexible situation of guiding-tube bend control steel wire, specifically by
It draws position of the screw in guiding-tube bend control wire casing and adjusts realization, it is easy to operate, it can be shown intuitively, in real time further through groove
Show guiding-tube bend angle.
It is used cooperatively by opening up two lockholes in left and right in guiding-tube bend control wire casing with guiding-tube bend traction screw, it can
Conduit is locked on 0 ° and 90 ° of bending points with realizing.
As the further improvement to this technology, probe telescoping steel wire is mobile to be arranged in conduit, is provided in control handle
In the aperture in portion and probe telescoping control wire casing, one end of probe telescoping steel wire and the pedestal fixation with steel wire terminal on pedestal keel
Hingedly, the other end is connected firmly with probe telescoping traction screw；
Two lockholes in left and right are opened up in probe telescoping control wire casing, probe telescoping traction screw is detachably arranged at lockhole
It is interior；
Two lockholes in left and right indicate the extreme position that probe extends and retracts respectively.
Above-mentioned improvement is popped one's head in flexible with the flexible drive of probe telescoping steel wire, may be deposited in adaptation conduit
The situations such as bending, torsion under the premise of, axial pulling force or pressure are conducted by means of probe telescoping steel wire, reaction is fast
It is prompt, accurate.The extreme position that two lockholes in left and right indicates respectively, the probe that lock extends and retracts be respectively pop one's head in work and time
Position when receiving provides reliable lock-in state for probe work and recycling in place.
As the further improvement to this technology, bracket turn hole is opened up in the middle part of bracket keel, shaft is connected firmly in pedestal
The outer end of keel, by bracket turn hole and shaft, bracket keel, which are swung, to be arranged on pedestal keel；It is revolved by fulcrum bracket of shaft
The one end and pedestal keel for turning memory elastic slice connect firmly, the other end is resisted against the insides of bracket keel；
Through-hole is opened up along axial direction in the inner end of pedestal keel, opens up bracket traction fiber along axial direction in the outer end of pedestal keel
Chamber, bracket traction steel wire is mobile to be arranged in through-hole, is provided in the aperture and bracket rotary alignment control slot of control middle handle, branch
One end of frame traction steel wire swing be arranged in bracket traction fiber it is intracavitary and with connect firmly the bracket fixation with steel wire on the inside of bracket keel
Terminal is hinged and far from shaft, and the other end is connected firmly with bracket rotation traction traction screw；
Two lockholes in left and right are opened up in bracket rotary alignment control slot, bracket rotation traction traction screw is detachably arranged at lockhole
It is interior；
The quarter being equipped with for indicating bracket keel relative to pedestal keel swing angle is also carved in bracket rotary alignment control slot
Line.
Above-mentioned improvement realizes bracket keel in base with the flexible situation cooperation bracket rotation memory elastic slice of bracket traction steel wire
Swing on seat keel is in fact under the premise of adapting to the situations such as conduit bending that may be present, torsion, by means of bracket
The difference driving arm keel of the elastic force of pulling force and bracket the rotation memory elastic slice of traction steel wire are swung on pedestal keel, structure letter
It is single, it is easy to operate.Two lockholes in left and right indicates respectively, the bracket keel that lock relative to the corner of pedestal keel are to pop one's head in respectively
Position when closure and work provides reliable lock-in state for probe closure and work.
As the further improvement to this technology, rotation is provided with conduit rotary handle on control handle and conduit is solid
Connection.
This improvement is easy to use the corner radial of conduit rotary handle adjustment conduit.
As the further improvement to this technology, the spacing of main electrode and loop electrode is 4 ~ 15mm, takes the spacing to be
10mm。
As the further improvement to this technology, the macromolecular material of conduit, pedestal keel and bracket keel is made
For polyethylene.
As the further improvement to this technology, the macromolecular material of conduit, pedestal keel and bracket keel is made
For polyurethane.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of ambipolar radio frequency ablation probe (probe is T-type)；
Fig. 2 is a kind of structural schematic diagram of ambipolar radio frequency ablation probe；
Fig. 3 is the A-A view of Fig. 1；
Fig. 4 is the structural schematic diagram of bracket keel；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the B-B view of Fig. 4；
Fig. 7 is the structural schematic diagram of pedestal keel；
Fig. 8 is the right view of Fig. 7；
Fig. 9 is the left view of Fig. 7；
Figure 10 is the C-C view of Fig. 7；
Figure 11 is the structural schematic diagram of probe (probe is T-type)；
Figure 12 is the structural schematic diagram of probe；
Figure 13 is the side view of Figure 12；
Figure 14 is one schematic diagram of state for applying Atrial fibrillation radiofrequency ablation using a kind of ambipolar radio frequency ablation probe；
Figure 15 is two schematic diagram of state for applying Atrial fibrillation radiofrequency ablation using a kind of ambipolar radio frequency ablation probe；
Figure 16 is three schematic diagram of state for applying Atrial fibrillation radiofrequency ablation using a kind of ambipolar radio frequency ablation probe；
Figure 17 is four schematic diagram of state for applying Atrial fibrillation radiofrequency ablation using a kind of ambipolar radio frequency ablation probe.
In figure:
1. 5. loop electrode of main electrode 2. bracket keel, 3. shaft, 4. conduit, 6. pedestal keel
7. guiding-tube bend, which remembers 8. guiding-tube bend of elastic slice, controls 9. probe telescoping steel wire of steel wire
10. 11. bundling pipe line of bracket traction steel wire, 12. guiding-tube bend draws screw
13. conduit rotary handle 14. controls 15. guiding-tube bend of handle and controls wire casing
16. probe telescoping controls traction 19. bracket of the screw rotation of 17. bracket rotary alignment control slot of wire casing, 18. probe telescoping
Draw 20. radiofrequency melting instrument interface of screw, 21. thermocouple terminal
22. 23. bracket of bracket turn hole rotation memory 24. boundling line chamber of elastic slice lock chamber
25. 26. bracket of bracket traction fiber chamber rotation memory 27. bracket fixation with steel wire terminal of elastic slice
28. 30. atrium sinistrum of pedestal fixation with steel wire 29. probe segment of terminal, 31. pulmonary vein
32. guiding-tube bend controls 33. guiding-tube bend control line slot lock hole of steel wire duct
34. 35. bracket rotary alignment control slot lock hole of probe telescoping control line slot lock hole
36. 37. bracket seam allowance boss of bracket traction steel wire guide hole
38. form (state one) 39. of probe pops one's head in form (state two)
40. form (state three) 41. of probe pops one's head in form (state four).
Specific embodiment
With reference to the accompanying drawing, this technology is described further:
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of ambipolar radio frequency ablation probe shown in Fig. 4, including for connecting RF ablation
The bundling pipe line 11 of instrument controls handle 14, conduit 4 and probe 29；Bundling pipe line 11 includes for connecting penetrating for radiofrequency melting instrument
Frequency ablatograph interface 20, cable；The cable includes 21 line of thermocouple terminal, connect with radiofrequency melting instrument interface 20 two
RF ablation conducting wire；The main part of bundling pipe line 11 is contained in conduit 4；
Control handle 14 middle part have aperture (not shown) respectively be provided with control handle 14 on guiding-tube bend
Control wire casing 15, probe telescoping control wire casing 16 and bracket rotary alignment control slot 17 communicate, and 4 one end of conduit made of tubing turns
Dynamic setting is on control handle 14, and movement is provided with probe 29 inside the other end；
Again referring to shown in Figure 11, Figure 12, Figure 13, probe 29 includes that pedestal keel 6 and swing are arranged in 6 outer end of pedestal keel
Bracket keel 2, further include the main electrode 1 and loop electrode 5 connected firmly respectively in the left and right sides of bracket keel 2, main electrode 1 is returned
Path electrode 5 is connect with RF ablation conducting wire respectively；Thermocouple terminal 21, thermocouple are provided in 2 main electrode of bracket keel, 1 side
Terminal 21 is connect with thermocouple terminal line, to realize temperature sensing and the control in radiofrequency ablation procedures.
It further include the guiding-tube bend control mechanism for controlling 4 bending state of conduit；
The material that conduit 4, pedestal keel 6 and bracket keel 2 is made is macromolecular material.
Conduit overall material is tubing made of macromolecular material, can by the conduit rotary handle 13 of catheter tip
Realize axial 360 degree rotation.
Again referring to fig. 4 shown in-Figure 10, the material that pedestal keel 6 and bracket keel 2 are made is made of macromolecular material
Plate, bracket keel 2 and pedestal keel 6 couples by shaft 3 with bracket turn hole 22, and 3 material of shaft is Nitinol, hot
Blow is due to 6 end of pedestal keel end.Main electrode 1 and loop electrode 5 may customize by ablation demand as 4 ~ 15mm spacing, be with spacing
10mm is most widely used, and bracket keel 2 can also do corresponding mating customization to 6 size of pedestal keel.Main electrode 1, loop electrode 5
It is all contacted with tissue and constitutes ambipolar RF ablation circuit.
The macromolecular material more often selected mainly has polyethylene and polyurethane, selects polyurethane in this case.
Guiding-tube bend control mechanism includes the flexure mems elastic slice 7(built-in catheter flexure mems elastic slice 7 being arranged in conduit
Conduit be locally guiding-tube bend portion), free state downcomer flexure mems elastic slice 7 in 90 ° bending.
Guiding-tube bend, which is recalled, radially opens up guiding-tube bend control steel wire duct 32 in elastic slice 7, guiding-tube bend controls steel wire 8 and moves
The dynamic aperture that guiding-tube bend control steel wire duct 32 is set, is provided with 14 middle part of control handle and guiding-tube bend control wire casing 15
It is interior.
One end that guiding-tube bend control steel wire 8 is located in guiding-tube bend memory elastic slice 7 is free end, and the other end is curved with conduit
Song traction screw 12 connects firmly.When guiding-tube bend control steel wire 8 is completely withdrawn from guiding-tube bend control steel wire duct 32, guiding-tube bend
Portion is because the elastic reaction of guiding-tube bend memory elastic slice 7 is in 90 degree of radially bendings, when guiding-tube bend control steel wire 8 extends completely through duct
When bending section, guiding-tube bend is recalled elastic slice 7 and is supportted directly, and conduit 4 is to stretch state at this time.The flexible situation that guiding-tube bend controls steel wire 8 can
Conduit radial direction bending angle is controlled, is specifically adjusted by position of the guiding-tube bend traction screw 12 in guiding-tube bend control wire casing 15
It realizes.
Two lockholes 33 in left and right are opened up in guiding-tube bend control wire casing 15, guiding-tube bend draws screw 12 and is detachably arranged
In lockhole 33, i.e., guiding-tube bend traction screw 12 can be embedded in lockhole 33, and be taken out with can be convenient.
The groove being equipped with for indicating guiding-tube bend angle is also carved on guiding-tube bend control wire casing 15.In diagram, the left side
Lockhole corresponds to 0 ° of groove, the corresponding 90 ° of grooves of the right lockhole.
The mobile aperture and probe telescoping control that conduit 4 is set, is provided with 14 middle part of control handle of probe telescoping steel wire 9
In wire casing 16, one end of probe telescoping steel wire 9 and the pedestal fixation with steel wire terminal 28 on pedestal keel 6 are hinged, the other end and spy
Head telescopic traction screw 18 connects firmly；In this way, beginning from probe telescoping traction screw 18, through probe telescoping steel wire 9, pedestal fixation with steel wire
Terminal 28 constitutes power (pulling force, thrust) conducting path of a rigidity, keeps pedestal keel 6 and probe telescoping to pedestal keel 6
Draw screw 18 synchronous always, movement or stop in the same direction as needed.
Two lockholes 34 in left and right are opened up in probe telescoping control wire casing 16, probe telescoping draws screw 18 and is detachably arranged
In lockhole 34；I.e. probe telescoping traction screw 18 can be embedded in lockhole 34, and be taken out with can be convenient.
Two lockholes 34 in left and right indicate the extreme position that probe 29 extends and retracts respectively.In diagram, probe telescoping traction
When screw 18 is embedded in left side lockhole 34 in lock-in state, 29 stretching conduit 4 of probe can be at working condition, probe telescoping traction
When screw 18 is embedded in the lockhole 34 of the right in lock-in state, probe 29 retracts conduit 4, and probe telescoping traction screw 18 is extracted lock
When hole 34, probe telescoping traction screw 18 can control in wire casing 16 in probe telescoping to be moved freely, the probe telescoping in conduit 4
9 length of steel wire changes therewith, is at this time non-lock state.
It is fulcrum with shaft 3, material is one end and the pedestal dragon of the bracket rotation memory elastic slice 26 of high resiliency Nitinol
Bone 6 is fixed in the bracket rotation memory elastic slice lock chamber 23 opened up on pedestal keel 6, the other end is resisted against bracket keel 2
Inside；Thickness of the depth of bracket rotation memory elastic slice lock chamber 23 not less than bracket rotation memory elastic slice 26.In fact, branch
Frame rotation memory elastic slice 26 is a flat spring, applies the elastic force for making bracket keel 2 have opening trend to bracket keel 2 always.
It pops one's head under 29 stretching states, bracket keel 2 can do maximum circumferential 90 o rotation；2 pivoting mechanism of bracket keel passes through
The elastic force of bracket rotation memory elastic slice 26, the traction joint of bracket traction steel wire 10 realize that specific embodiment is:
Opening up through-hole as the guide hole 36 of bracket traction steel wire 10 along axial direction in the inner end of pedestal keel 6 is bracket traction
The top of the flexible guiding of steel wire 10, guide hole 36 provides fulcrum for the swing of bracket traction steel wire 10, in the outer of pedestal keel 6
End opens up bracket traction fiber chamber 25 along axial direction, and bracket traction steel wire 10 is mobile to be arranged in guide hole 36, is provided with control handle 14
In the aperture and bracket rotary alignment control slot 17 at middle part, one end of bracket traction steel wire 10, which is swung, to be arranged in bracket traction fiber chamber 25
It is interior and hinged and rotated far from shaft 3, the other end and bracket with bracket fixation with steel wire terminal 27 in the inside of bracket keel 2 is connected firmly
Traction screw 19 connects firmly；On bracket keel 2, the left side of shaft 3 have a seam allowance boss 37, seam allowance boss 37 and bracket keel
2 central axis, distance and 6 left side of pedestal keel to being equidistant to shaft 3 to shaft 3, to guarantee in bracket dragon
It is perpendicular in the bracket keel 2 and pedestal keel 6 of T font probe in the case that bone 2 is swung in place.
Through-hole is opened up as boundling line chamber 24 for bundling pipe line 11 to be arranged along axial direction on pedestal keel 6 again.
Two lockholes 35 in left and right are opened up in bracket rotary alignment control slot 17,0 screw 19 of bracket rotation traction traction is detachably set
It sets in lockhole 35；It also carves to be equipped in bracket rotary alignment control slot 17 and be swung for indicating bracket keel 2 relative to pedestal keel 6
The groove of angle.In diagram, left side lockhole be bracket traction steel wire 10 be in relaxation state, bracket keel 2 swing in place, bracket
The lock-in state that angle (also summary is support angle) between keel 2 and pedestal keel 6 is 90 °, the right lockhole is that support angle is
0 ° of lock-in state.
Only when probe bracket is under stretching state, bracket rotation traction traction screw 19 extracts lockhole 35, rotates and remembers in bracket
Under the active force for recalling elastic slice 26, bracket keel 2 are swingable.Bracket can also be realized by mobile probe telescopic traction screw 18
The fixed corner setting of keel 2, but at this time support angle can not adaptive sensitive stove RF ablation face, be only applied to fixed angle and penetrate
Frequency ablation scene.
When main electrode 1 and loop electrode 5 contact human body sensitivity stove tissue, support angle rotates memory 26 bullet of elastic slice in bracket
Both power, active force of bracket traction steel wire 10 adaptively adjust under acting on tissue contact surface, and the T-type structure of probe also assists
Main electrode 1, loop electrode 5 come into full contact with sensitive stove RF ablation face.
Before probe retraction, bracket rotation traction traction screw 19 need to be moved to the position right lockhole (0 o), then do retracting action.
With reference to the accompanying drawing, for implementing Atrial fibrillation radiofrequency ablation, this ambipolar radio frequency ablation probe is described in detail
Application method.
Again referring to shown in Figure 14-Figure 17:
A. radiofrequency melting instrument interface 20 is connect with radiofrequency melting instrument；
B. ambipolar radio frequency ablation probe 29 is punctured by patient's femoral vein and is entered, and is gone directly atrium dextrum via inferior caval vein,
Punctured (the generally no greater than hole of 2.2mm) into atrium sinistrum 30 in atrial septum, for established between pulmonary vein 31 and atrium every
From band, radiofrequency need to be done to ring pulmonary vein cardiac muscle to block transmission of the electric signal from pulmonary vein 31 to atrium；
C. conduit 4 reaches left room 30, and form of popping one's head at this time such as Figure 14 state 1 is illustrated, and main electrode 1 (is removed in 29 parts of probe
Part) close at 4 front end of conduit；
D. probe 29 is stretched out by conduits 4 by control handle 14, mobile control 14 probe telescoping of handle controls in wire casing 16
Probe telescoping traction screw 18 to extended position and be pressed into lockhole, at this time pop one's head in state such as Figure 15 state 2 39 show
Meaning；
E. the bracket rotation traction traction screw 19 of bracket rotary alignment control slot 17 is extracted, bracket traction steel wire 10 is for non-lock
State, bracket keel 2 are expanded to 90 degree axial under the action of bracket rotates memory elastic slice 26 at this time, as Figure 16 state 3 40 is shown
Meaning；
F. under the assistance of X-ray angiographic apparatus, conduit axial angle is adjusted by rotary handle 13, by adjusting conduit
The radial curvature of position adjustment conduit 4 of the bending traction screw 12 in guiding-tube bend control wire casing 15, after conduit 4 adjusts the angle
Into sensitive stove region, until probe 29 contacts myocardium meat tissue；
G. it pushes probe telescoping to draw screw 18 to the left in probe telescoping wire casing 16,29 parts of probe can be promoted to the heart
Flesh treats face and applies normal pressure, rotates under memory 26 elastic force of elastic slice auxiliary in bracket, it can be achieved that bipolar electrode and sensitive stove group
It knits and fits closely, as Figure 17 state 4 41 is illustrated；
H. radiofrequency melting instrument can also judge contact situation by electrode loop impedance, and radiofrequency ablation therapy is unfolded immediately.
2 main electrode side built-in thermocouple 21 of bracket keel, can perceive 1 RF ablation temperature of main electrode, so as to RF ablation
Instrument realizes temperature controlled radio frequency ablation.
Radiofrequency ablation therapy terminates, and is closed bracket keel 2 and pedestal keel 6, recycling probe 29, cut-off conduit 4, convolution is led
Pipe 4 playbacks, withdrawal conduit 4 and probe 29.
The beneficial effect of this technology is:
Above-mentioned ambipolar radio frequency ablation probe is especially applicable in for effectively applying radio-frequency ablation procedure to cavity type organ
In effectively applying radio-frequency ablation procedure to heart, using this ambipolar radio frequency ablation probe, patient is not necessarily to backboard, and only need to be in stock
A wound hole is punctured at vein can apply heart radio frequency ablation art.
Claims (6)
1. a kind of ambipolar radio frequency ablation probe, including the bundling pipe line for connecting radiofrequency melting instrument, control handle, conduit and
Probe；Bundling pipe line includes radiofrequency melting instrument interface, the cable for connecting radiofrequency melting instrument, and the cable includes thermocouple end
Sub- line, two RF ablation conducting wires being connect with radiofrequency melting instrument interface；It is characterized in that
Control handle has aperture to control respectively with guiding-tube bend control wire casing, the probe telescoping being provided on control handle at middle part
Wire casing and bracket rotary alignment control slot communicate, and the tube at one end made of tubing is rotatably arranged on control handle, in the other end
Portion's movement is provided with probe；
Probe includes pedestal keel and swings the bracket keel that pedestal keel outer end is arranged in, and further includes being connected firmly respectively in bracket dragon
Main electrode and loop electrode at left and right sides of bone, main electrode, loop electrode are connect with RF ablation conducting wire respectively；In bracket keel
Thermocouple terminal is provided in main electrode side, thermocouple terminal is connect with thermocouple terminal line；
It further include the guiding-tube bend control mechanism for controlling guiding-tube bend state.
2. ambipolar radio frequency ablation probe according to claim 1, characterized in that
Guiding-tube bend control mechanism includes the guiding-tube bend memory elastic slice that catheter interior is arranged in, in guiding-tube bend memory elastic slice
Guiding-tube bend control steel wire duct is radially opened up, guiding-tube bend controls the mobile setting of steel wire and controls threaded hole of steel in guiding-tube bend
In road, the aperture for being provided with control middle handle and guiding-tube bend control wire casing；
It is free end that guiding-tube bend control steel wire, which is located at one end in guiding-tube bend memory elastic slice, and the other end and guiding-tube bend are drawn
Screw connects firmly；
Two lockholes in left and right are opened up in guiding-tube bend control wire casing, guiding-tube bend traction screw is detachably arranged in lockhole；
The groove being equipped with for indicating guiding-tube bend angle is also carved on guiding-tube bend control wire casing.
3. ambipolar radio frequency ablation probe according to claim 1, characterized in that
In the mobile aperture that conduit is set, is provided with control middle handle of probe telescoping steel wire and probe telescoping control wire casing,
One end of probe telescoping steel wire and the pedestal fixation with steel wire terminal on pedestal keel are hinged, and the other end and probe telescoping draw screw
It connects firmly；
Two lockholes in left and right are opened up in probe telescoping control wire casing, probe telescoping traction screw is detachably arranged in lockhole；
Two lockholes in left and right indicate the extreme position that probe extends and retracts respectively.
4. ambipolar radio frequency ablation probe according to claim 1, characterized in that
Opening up bracket turn hole in the middle part of bracket keel, shaft is connected firmly in the outer end of pedestal keel, by bracket turn hole and shaft,
Bracket keel, which are swung, to be arranged on pedestal keel；
Using shaft as fulcrum, one end of elastic slice is remembered in bracket rotation and pedestal keel connect firmly, the other end is resisted against bracket keel
Inside；
Through-hole is opened up along axial direction in the inner end of pedestal keel, opens up bracket traction fiber chamber along axial direction in the outer end of pedestal keel, is propped up
Frame traction steel wire is mobile to be arranged in through-hole, is provided in the aperture and bracket rotary alignment control slot of control middle handle, and bracket is led
Draw steel wire one end swing be arranged in bracket traction fiber it is intracavitary and with connect firmly the bracket fixation with steel wire terminal on the inside of bracket keel
Hinged and separate shaft, the other end are connected firmly with bracket rotation traction traction screw；
Two lockholes in left and right are opened up in bracket rotary alignment control slot, bracket rotation traction traction screw is detachably arranged in lockhole；
The groove being equipped with for indicating bracket keel relative to pedestal keel swing angle is also carved in bracket rotary alignment control slot.
5. ambipolar radio frequency ablation probe according to claim 1, characterized in that rotation, which is provided with, on control handle leads
Pipe rotary handle is connected firmly with conduit.
6. ambipolar radio frequency ablation probe according to claim 1, characterized in that main electrode and the spacing of loop electrode are
4~15mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821187298.1U CN209091618U (en) | 2018-07-25 | 2018-07-25 | A kind of ambipolar radio frequency ablation probe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821187298.1U CN209091618U (en) | 2018-07-25 | 2018-07-25 | A kind of ambipolar radio frequency ablation probe |
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| Publication Number | Publication Date |
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| CN209091618U true CN209091618U (en) | 2019-07-12 |
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| CN201821187298.1U Active CN209091618U (en) | 2018-07-25 | 2018-07-25 | A kind of ambipolar radio frequency ablation probe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114424970A (en) * | 2022-01-20 | 2022-05-03 | 中国人民解放军空军军医大学 | Cardiac muscle ablation assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114424970A (en) * | 2022-01-20 | 2022-05-03 | 中国人民解放军空军军医大学 | Cardiac muscle ablation assembly |
| CN114424970B (en) * | 2022-01-20 | 2024-02-02 | 中国人民解放军空军军医大学 | Myocardial ablation assembly |
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