CN104220019A - Electrode catheter - Google Patents
Electrode catheter Download PDFInfo
- Publication number
- CN104220019A CN104220019A CN201380016298.9A CN201380016298A CN104220019A CN 104220019 A CN104220019 A CN 104220019A CN 201380016298 A CN201380016298 A CN 201380016298A CN 104220019 A CN104220019 A CN 104220019A
- Authority
- CN
- China
- Prior art keywords
- probe
- front portion
- shaft
- electrode
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
- A61B5/6857—Catheters with a distal pigtail shape
-
- 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
- A61B5/287—Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
-
- 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
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- 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
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
Abstract
An electrode catheter is provided with a catheter shaft (10), a control handle (20), a catheter distal end section (30), and a deflection mechanism at the catheter distal end section. The catheter distal end section (30) has: a proximal end region (301) which extends in the distal direction from the distal end of the catheter shaft (10); a body region (302) which extends in the same plane from the distal end of the proximal end region while forming a loop; and a distal end region (303) which extends in the distal direction from the distal end of the body region (302) toward the center axis (P) of the loop. The deflection mechanism at the catheter distal end section is a mechanism which deflects the distal end portion of the catheter shaft (10) from the axis of the catheter shaft (10) in both directions perpendicular to the direction along which the loop is located, and thus the mechanism can deflect the catheter distal end section (30) in both directions. In the electrode catheter, the position of the catheter distal end section when the catheter distal end section is deflected in one direction and the position of the catheter distal end section when the catheter distal end section is deflected in the other direction can be set symmetrically about the catheter shaft as the axis of symmetry.
Description
Technical field
The present invention relates to the electrode catheter with the probe front portion being formed as ring-type.
Background technology
Such as, as the ARR medical apparatus and instruments for diagnosing or treat heart, use electrode catheter.As such electrode catheter, introduce the probe (with reference to patent documentation 1) having and there is bending fore-end in the face of probe.
In addition, as the electrode catheter of the current potential at the positions such as the pulmonary vein for measuring heart, introduced the electrode catheter (with reference to patent documentation 2) having and there is the probe front portion being formed as ring-type by the applicant.
Fig. 7 to Fig. 9 represents the electrode catheter described in patent documentation 2, and Fig. 7 is overall perspective view, and Fig. 8 represents the key diagram of state observed from front, and Fig. 9 represents probe front portion the is deflected axonometric chart of state of about 180 °.
Electrode catheter shown in Fig. 7 to Fig. 9 possesses: probe shaft (probe body) 110, the joystick 120 be connected with the base end side of probe shaft 110, to be connected with the front of probe shaft 110 and be formed as circular ring-type probe front portion 130, be installed on the periphery in probe front portion 130 ring electrode 141, be installed on the front termination electrode 142 of the front end in probe front portion 130, the deflection mechanism in probe front portion.In the figure, 121 and 122 is the handle and the knob that form joystick 120 respectively.
The deflection mechanism forming the probe front portion of this electrode catheter is following mechanism: bent by the direction (direction represented by the arrow F of Fig. 8) making the fore-end 112 of probe shaft 110 be positioned to ring portion, make probe front portion 130 deflect to this direction thus as shown in Figure 9.
That is, according to this deflection mechanism, probe front portion 130 can be made only to direction deflection (unidirectional control: Singledirectional Control).
According to the electrode catheter described in patent documentation 2, the almost whole area test current potential in probe front portion 130 can be utilized.
Patent documentation 1: Japanese Unexamined Patent Publication 2006-255401 publication
Patent documentation 2: Japan Patent No. 4027411 publication
In the electrode catheter in probe front portion possessing the ring-type being formed as circular as the electrode catheter described in above-mentioned patent documentation 2, if this probe front portion can be deflected (double-direction control: Bidirectional Control) to both direction centered by the axle of probe shaft, then can realize the raising of the operability as probe.
But, in the electrode catheter described in patent documentation 2, when making probe front portion 130 to when also can deflect (can improve with deflecting to both direction) with " direction that ring portion is positioned at " that can deflect (in fig. 8 with the direction that arrow F represents) rightabout, as shown in Figure 10, when making the fore-end 112 of probe shaft 110 bend to a direction (indicated by the solid line in the figure) and (represent with double dot dash line in the figure) when making it bend to other direction, the position in probe front portion 130 is not symmetrical for axle with probe shaft 110.
And, under these circumstances, such as, when making the fore-end 112 of probe shaft 110 bend to a direction, the current potential at the neighbouring position of probe shaft 110 can be measured by the electrode (ring electrode 141 and front termination electrode 142) being installed on the probe front portion 130 being in the state deflected to this direction, but when making the fore-end 112 of probe shaft 110 to same extent carry out bending to other direction, by being installed on the electrode in the probe front portion 130 being in the state deflected to this direction, the current potential at the neighbouring position of probe shaft 110 can not be measured.
In addition, if make the probe front portion 130 shown in Fig. 8 deflect in the opposite direction to the side represented with arrow F, the front end in probe front portion 130 (front termination electrode 142) then will be made to contact with the fore-end 112 of probe shaft 110, the ring portion forming probe front portion 130 hangs over the fore-end 112 (ring portion will be wound in probe shaft 110) of probe shaft 110, thus, become sometimes and can not carry out front end deflecting operation.
In addition, the probe shaft 110 of the electrode catheter shown in pie graph 7 to Fig. 9 is being inserted Ink vessel transfusing, joystick 120 is pivoted while when being advanced towards object position in probe front portion 130, if the direction of rotation of joystick 120 is and direction of rotation consistent towards the direction of cardinal extremity from front end in the ring portion forming probe front portion 130 (in fig. 8, representing with arrow S1).This is because: if make joystick 120 rotate along the direction of rotation (representing with arrow S2 in the figure) consistent with the direction from cardinal extremity towards front end in ring portion, the front termination electrode 142 being then likely installed on the front end in probe front portion 130 abuts with blood vessel etc. thus ring portion is opened, or injures blood vessel by this front termination electrode 142.
Like this, in the electrode catheter with the probe front portion being formed as ring-type, the direction of rotation of attentional manipulation handle is often needed, thus complicated operation.
The electrode catheter with the probe front portion of ring-type such described in patent documentation 2, is expected to in order to form 3D rendering in heart and electroactive in map cardiac.
But, the electrode (being installed on ring electrode 141 and the front termination electrode 142 in probe front portion 130) of the formation electrode catheter described in patent documentation 2 is all in the same plane, therefore the irregular wall of the heart of the very not applicable tool of these electrodes, can not carry out correctly and map operation rapidly.
Summary of the invention
The present invention completes based on situation such above.
1st object of the present invention is to provide a kind of electrode catheter, and this electrode catheter can make to be in and the fore-end of probe shaft be bent to a direction and the probe front portion of state that deflected and be in and the fore-end of probe shaft bent to other direction and to be positioned at probe shaft be the position of axle and symmetry the probe front portion of state that deflected.
2nd object of the present invention is to provide a kind of electrode catheter, and this electrode catheter will make the ring portion in formation probe front portion hang over the fore-end of probe shaft because of front end deflecting operation.
3rd object of the present invention is to provide a kind of electrode catheter, and this electrode catheter, when making joystick be advanced towards object position in probe front portion around the rotation of its axle, can make joystick rotate to either direction.
4th object of the present invention is to provide a kind of electrode catheter, and this electrode catheter can make the irregular wall of the heart of the very applicable tool of formation electrode.
(1) feature of electrode catheter of the present invention is to possess: probe shaft, and it has at least 1 endoporus; Joystick, it is connected with the base end side of above-mentioned probe shaft; Probe front portion, it is connected with the front of above-mentioned probe shaft and has and at least 1 of the endoporus of this probe shaft endoporus be communicated with; Multiple ring electrode, it is installed in the periphery in above-mentioned probe front portion; And the deflection mechanism in above-mentioned probe front portion,
Above-mentioned probe front portion has: the body region that the base end side region distally extended from the front end of above-mentioned probe shaft and the ring portion that formation is circular or oval from the front end in above-mentioned base end side region also extend,
The deflection mechanism in above-mentioned probe front portion is following mechanism: by making the fore-end of above-mentioned probe shaft bend to the both direction that the direction be positioned at relative to above-mentioned ring portion (direction that the central shaft of this ring portion is positioned at) is vertical centered by the axle of this probe shaft, above-mentioned probe front portion (only) can be made to deflect to above-mentioned both direction.
According to the electrode catheter of said structure, possess by making the fore-end of probe shaft both direction (direction and other direction) vertical to the direction be positioned at relative to ring portion (body region in probe front portion) centered by the axle of this probe shaft bending and make the deflection mechanism that probe front portion deflects to this both direction, the fore-end of probe shaft being bent to a direction and the probe front portion of state that deflected and be in and the fore-end of probe shaft bent to other direction and to be in probe shaft be the position of axle and symmetry the probe front portion of state that deflected so can make to be in.
In addition, even if when making the fore-end of probe shaft bending to the either direction in a direction and other direction, the front end in the probe front portion deflected thus also can not contact with the fore-end of probe shaft, and the ring portion forming this probe front portion also can not hang over the fore-end of probe shaft.
(2) preferably in electrode catheter of the present invention, above-mentioned probe front portion has and distally extends front-end side region from the front end in aforementioned body region towards the central shaft of above-mentioned ring portion.
According to the electrode catheter of this structure, joystick is rotated around axial either direction, the front end of probe front portion (front-end side region) all can not abut with blood vessel etc.
Therefore, make on limit joystick pivot limit when being advanced towards object position in probe front portion, joystick is rotated to either direction, the complexity of the direction of rotation of attentional manipulation handle can be avoided.
(3) preferably in the electrode catheter of above-mentioned (2), termination electrode before the front end in above-mentioned probe front portion is provided with,
And in aforementioned body region and above-mentioned front-end side region, above-mentioned ring electrode is installed.
According to the electrode catheter of this structure, front termination electrode is positioned in different planes from the ring electrode of the body region being installed in probe front portion with the ring electrode of the front-end side region being installed in probe front portion, so the electrode forming electrode catheter is configured by three-dimensional (three-dimensional).
Thereby, it is possible to make these electrodes also be applicable to the irregular wall of the heart of tool, such as, the current potential of the recess (depression) of wall of the heart can be measured by front termination electrode and the ring electrode being installed in front-end side region.
In addition, when electroactive in the electrode catheter map cardiac utilizing this structure, can carry out correctly and map operation rapidly.
(4) preferably in the electrode catheter of above-mentioned (3), in above-mentioned base end side region, above-mentioned ring electrode is installed.
According to the electrode catheter of this structure, in more wide 3D region, can carry out correctly and map operation rapidly.
(5) preferably in the electrode catheter of above-mentioned (2) ~ (4), the central shaft of the ring portion in aforementioned body region and the central shaft of above-mentioned probe shaft stagger, and above-mentioned front-end side region is relative to the inclined of the ring portion in aforementioned body region.
(6) feature of electrode catheter of the present invention is to possess: probe shaft, and it has at least 1 endoporus; Joystick, it is connected with the base end side of above-mentioned probe shaft; Probe front portion, it is connected with the front of above-mentioned probe shaft and has and at least 1 of the endoporus of this probe shaft endoporus be communicated with; Multiple ring electrode, it is installed in the periphery in above-mentioned probe front portion; And the deflection mechanism in above-mentioned probe front portion,
Above-mentioned probe front portion has: the body region that the base end side region distally extended from the front end of above-mentioned probe shaft and the ring portion that formation is circular or oval from the front end in above-mentioned base end side region also extend,
The deflection mechanism in above-mentioned probe front portion is following mechanism: by making the central shaft of the ring portion in aforementioned body region bend to both direction in the plane parallel relative to the central shaft of above-mentioned probe shaft, above-mentioned probe front portion can be made to deflect to above-mentioned both direction.
(7) electrode catheter of the present invention is optimized for the current potential measuring the pulmonary vein orifices of pulmonary veins of left atrium (comprise around).
(8) what electrode catheter of the present invention was preferentially used in map cardiac is electroactive.
According to electrode catheter of the present invention, can make to be in and the fore-end of probe shaft is bent to a direction and the probe front portion of state that deflected and be in and the fore-end of probe shaft bent to other direction and to be positioned at probe shaft be axle and symmetrical position the probe front portion of state that deflected.
In addition, when front end deflecting operation, the ring portion forming probe front portion can not hang over the fore-end of probe shaft.
According to probe front portion, there is the electrode catheter of the present invention from the front end of body region towards the front-end side region that the central shaft of ring portion distally extends, make on limit joystick pivot limit when being advanced towards object position in probe front portion, joystick can be made to rotate to either direction.
In addition, termination electrode before the front end in probe front portion is provided with, and in body region and front-end side region, ring electrode is installed, even if thus relative to the irregular wall of the heart of tool, the electrode being installed on probe front portion also can be made very applicable.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the electrode catheter involved by one embodiment of the present invention.
Fig. 2 is the enlarged partial isometric view (II portion enlarged drawing) of Fig. 1.
Fig. 3 is the front view representing the electrode catheter shown in Fig. 1.
Fig. 4 is the key diagram observing the electrode catheter shown in Fig. 1 from front.
Fig. 5 is the front view representing the state that the probe front portion of the electrode catheter shown in Fig. 1 has deflected.
Fig. 6 is the enlarged partial isometric view of the electrode catheter involved by variation of the present invention.
Fig. 7 is the axonometric chart of the electrode catheter represented in the past.
Fig. 8 is the key diagram observing the electrode catheter shown in Fig. 7 from front.
Fig. 9 is the axonometric chart representing the state that the probe front portion of the electrode catheter shown in Fig. 7 has deflected.
Figure 10 represents when improveing the electrode catheter shown in Fig. 7 thus enabling probe front portion deflect to both direction, the key diagram of the state that probe front portion has deflected.
Detailed description of the invention
< embodiment >
The feature of the electrode catheter 100 of the present embodiment shown in Fig. 1 to Fig. 5 is to possess: have the probe shaft 10 of at least 1 endoporus, the joystick 20 be connected with the base end side of probe shaft 10, to be connected with the front of probe shaft 10 and have with the probe front portion 30 of at least 1 of the endoporus of this probe shaft 10 endoporus be communicated with, the multiple ring electrodes 41 being installed in the periphery in probe front portion 30, be installed in probe front portion 30 front end before the deflection mechanism in termination electrode 42 and probe front portion;
Probe front portion 30 has: the base end side region 301 distally extended from the front end of probe shaft 10, the conglobate ring portion of shape and the body region 302 extended at grade and from the front end of body region 302 towards the front-end side region 303 that the central shaft P of ring portion distally extends from the front end in base end side region 301;
The deflection mechanism in probe front portion is following mechanism: by making the fore-end of probe shaft 10 bend to the both direction (direction and other direction) vertical with the direction that ring portion is positioned at (direction that the central shaft P of ring portion is positioned at) centered by the axle of this probe shaft 10, probe front portion 30 can be made only to deflect to above-mentioned both direction.
The probe shaft 10 forming electrode catheter 100 is the elongated tubular body structures with 1 endoporus, is made up of the 1st pipe 11 and the 2nd pipe 12.
For the 1st pipe 11, require that there is certain flexibility (bendability), the Incoercibility of tube axial direction, torsional rigidity.By the torsional rigidity that the 1st pipe 11 has, the rotating torques from joystick 20 can be passed to probe front portion 30.
Be not particularly limited as the 1st pipe 11, can enumerate and weave the pipe (braided tube) after the pipe be made up of resins such as polyurethane, nylon, PEBAX (polyether block amide) with stainless steel silk.
The length of the 1st pipe 11 is such as 50 ~ 200cm.
2nd pipe 12 is the pipes of the fore-end forming probe shaft 10, having the endoporus be communicated with the endoporus of the 1st pipe 11, such as, bending by being configured in the leaf spring of endoporus.
Constituent material as the 2nd pipe 12 can use avirulent resin.Wherein, the 2nd pipe 12 is not because more soft than the 1st pipe 11 by weaving.
The length of the 2nd pipe 12 is such as 3 ~ 10cm, is more preferably 4 ~ 7cm.
As the external diameter of probe shaft 10 (the 1st pipe 11 and the 2nd pipe 12), be preferably below 2.6mm, be more preferably below 2.4mm, be especially preferably 2.3 ~ 2.4mm.
Guarantee torsional rigidity (wall thickness) from the viewpoint of the receiving space guaranteeing wire rod, wire etc., the internal diameter of probe shaft 10 such as when external diameter is 2.3 ~ 2.4mm, is preferably about 1.5 ~ 1.7mm.
Form the joystick 20 of electrode catheter 100 to be connected with the base end side of probe shaft 10 (the 1st pipe 11), possess handle 21 and the swivel plate 22 for the front end deflecting operation that carries out probe.
The probe front portion 30 forming electrode catheter 100 is connected with the front of probe shaft 10, is made up of the pipe with the endoporus be communicated with the endoporus of probe shaft 10 (the 2nd pipe 12).As the constituent material of this pipe, the resin material of polyurethane or the such biology acceptability of PEBAX can be enumerated.
Probe front portion 30 is by the base end side region 301 distally extended from the front end of probe shaft 10, from the front end in this base end side region 301, the conglobate ring portion of shape and the body region 302 extended at grade and the front-end side region 303 that distally extends towards the central shaft P of ring portion from the front end of this body region 302 are formed.
The base end side region 301 in probe front portion 30 is extended from the front end of probe shaft 10 (the 2nd pipe 12) until the part of cardinal extremity of body region 302.
The body region 302 in probe front portion 30 is formed as circular ring-type, by the ring electrode 41 be mounted thereon, and can the inner peripheral portion of Simultaneously test blood vessel.Wherein, probe front portion 30 is not closed ring portion, but the spiral ring portion that apex electrode 32 is positioned at foremost (when being called " circle ", " ellipse " in the present invention, being said accurately and comprised spiral type.)。
As shown in Figure 4, in the present embodiment, body region 302 is designed to: with the front end in base end side region 301 for starting point thus ring-type extend, central shaft P is positioned at the position of having staggered from the central shaft of this probe shaft 10.
In addition, in the present invention, for conplane record, when spiral ring portion, the region comprising width to a certain degree at the direction of principal axis of ring portion is represented.
Probe front portion 30 has the front-end side region 303 that from the front end of body region 302 limit distally extends towards the central shaft P limit of the ring portion of the shape as this body region 302, is provided with front termination electrode 42 in the front end (i.e. the front end in probe front portion 30) of this front-end side region 303.
That is, in the present embodiment, front end area 303 is formed as linearity, and distally tilts to extend from the plane of the ring portion of the shape as body region 302.More specifically, front end area 303 tilts to extend from the periphery of the ring portion of the shape as body region 302 towards the central shaft P of ring portion.
As shown in Figure 2 and Figure 4, the front termination electrode 42 being installed on the front end in probe front portion 30 (front-end side region 303) is positioned at the distal side of body region 302, and is positioned at the inner side (on approximate centre axle P) of the ring portion as body region 302.
Therefore, with probe front portion 30 for front and when making probe shaft 10 insert internal blood vessel, even if make joystick 20 rotate to either direction, the front termination electrode 42 being installed in the front end in probe front portion 30 (front-end side region 303) also can always advance at intravascular space, and can not contact with blood vessel.
Consequently, when making joystick 20 be advanced towards object position in probe front portion 30 around its axle rotation limit on limit, numerous and diverse item of the direction of rotation of attentional manipulation handle 20 can be avoided.
As shown in Figure 4, for probe front portion 30, termination electrode 42 before the front end of front-end side region 303 is provided with, and at its outer peripheral face, 11 (have 10 in body region 302, have 1 in front-end side region 303) ring electrodes 31 are installed.
Like this, front termination electrode 42 is positioned in different planes with 1 ring electrode 41 being installed in front-end side region 303 from 10 ring electrodes 41 being installed on body region 302, therefore, the electrode forming the electrode catheter 100 of present embodiment is configured by three-dimensional (three-dimensional).
Thereby, it is possible to make these electrodes also be applicable to the irregular wall of the heart of tool, such as, by front termination electrode 42 and the ring electrode 41 being installed in front-end side region 303, the current potential of the recess (depression) of wall of the heart can be measured.
And, to come in map cardiac when utilizing the electrode catheter 100 of present embodiment electroactive, electrode catheter in the past at grade is all configured (such as with all formation electrodes, electrode catheter described in above-mentioned patent documentation 2) compare, can carry out correctly and map operation rapidly.
Front termination electrode 42 and ring electrode 41 can be made up of conductive materials such as platinum, gold, iridium or their alloys.
In addition, the number of certain ring electrode 41 is not defined as 11.The number of ring electrode 41 is preferably 6 ~ 20, is more preferably 8 ~ 12.
The electrode catheter 100 of present embodiment be double-direction control (Bidirectional Control) type can the probe of front end deflecting operation.
The deflection mechanism in probe front portion forming electrode catheter 100 is following mechanism: bending by making the fore-end of probe shaft 10 centered by the axle of this probe shaft 10, to the direction that body region 302 that is the ring portion relative to probe front portion 30 is positioned at (direction that the central shaft P of this ring portion is positioned at) vertical both direction (using the left and right directions represented by arrow A and arrow B in the figure), probe front portion 30 can be made only to deflect to this both direction.
2 stretching wire rods that the deflection mechanism in probe front portion is such as extended by the endoporus at probe shaft 10 are formed with the leaf spring of the fore-end (the 2nd pipe 12) being configured in probe shaft 10.
The rear end of each of stretching wire rod and the swivel plate 22 of joystick 20 that form deflection mechanism link.On the other hand, the front end of each of stretching wire rod such as links with the leading section of leaf spring.
Here, the constituent material as stretching wire rod can enumerate rustless steel and Ni-Ti alloy etc.The surface of preferred stretching wire rod is covered by resin.The diameter of stretching wire rod 41 is such as 0.1 ~ 0.5mm.
Here, if make swivel plate 22 rotate to the A1 direction shown in Fig. 1 and Fig. 3, then pull a stretching wire rod thus the fore-end of probe shaft 10 bending to arrow A direction, thus, probe front portion 30, to the deflection of arrow A direction, becomes the state represented with double dot dash line of Fig. 5.
On the other hand, if make swivel plate 22 rotate to the B1 direction shown in Fig. 1 and Fig. 3, then pull another root stretching wire rod thus the fore-end of probe shaft 10 is bending to arrow B direction, thus, probe front portion 30, to the deflection of arrow B direction, becomes the state indicated by the solid line of Fig. 5.
The electrode catheter 100 of present embodiment has following features: the yawing moment (bending direction of the fore-end of probe shaft 10) in probe front portion 30 is the vertical both directions (in the diagram with the left and right directions that arrow A and arrow B represent) in the direction (direction that the central shaft P of this ring portion is positioned at) that is positioned at relative to shape that is the ring portion of the body region 302 in probe front portion 30.
That is, if set the deflection of yawing moment as longitudinal direction of the conventional art described in the introduction, then of the present inventionly transverse direction is deflected to.In other words, in the prior art, the central shaft P of ring portion is tilted in the plane of the central shaft comprising probe shaft 10, but in the present invention, the central shaft P of ring portion is tilted in the plane parallel relative to the central shaft of probe shaft 10.
The yawing moment in probe front portion 30 is not the direction (in the diagram with the longitudinal direction that arrow F represents) that ring portion is positioned at, but both direction vertical therewith (in the diagram with the left and right directions that arrow A and arrow B represent), thus, as shown in Figure 5, the probe front portion 30 when can make the probe front portion 30 when having deflected making the fore-end of probe shaft 10 bend to the direction shown in arrow A and deflect making the fore-end of probe shaft 10 bend to the direction shown in arrow B is positioned at probe shaft 10 for axle and the position of symmetry.
In addition, even if bend to the either direction shown in arrow A and arrow B by making the fore-end of probe shaft 10, front end (front termination electrode 42) to the probe front portion 30 that bending direction (left and right directions) deflects also can not contact with the fore-end of probe shaft 10, so can not there is the fore-end that the ring portion forming probe front portion 30 hangs over probe shaft 10, ring portion is wound in the situation of probe shaft 10.
The electrode catheter 100 of present embodiment can be optimized for and measure pulmonary venous current potential.
For concrete example, make to pierce through atrial septum and the fore-end being directed into the probe shaft 10 of left atrium bends, the electrode thus by being installed in the probe front portion 30 deflected measures the current potential of the surrounding of orifices of pulmonary veins.
Such as, the fore-end of probe shaft 10 can be bent and the electrode in the probe front portion 30 deflected to the direction shown in arrow A by being installed in, measure the current potential of the surrounding of right superior pulmonary vein mouth, the fore-end of probe shaft 10 being bent to the direction shown in arrow B and the electrode in probe front portion 30 that deflected by being installed in, measuring the current potential of the surrounding of right inferior pulmonary vein mouth.
The electrode catheter 100 of present embodiment can be optimized for generate 3D rendering in heart and electroactive in map cardiac.
And, form the electrode of electrode catheter 100 and three-dimensionally configured, so can carry out correctly and map operation rapidly.
As described above, electrode catheter 100 according to the present embodiment, can make probe front portion 30 to both direction deflection, so with have ring-type probe front portion electrode catheter in the past compared with operability excellent.
And, the probe front portion 30 when having deflected to a direction (direction that such as arrow A represents) and the probe front portion 30 when having deflected to other direction (direction that such as arrow B represents) can be made to be in probe shaft 10 for axle and symmetrical position, thereby, it is possible to realize the further raising of operability.In addition, when front end deflecting operation, can not exist and form the ring portion in probe front portion 30 and hang over the such situation of the fore-end (ring portion is wound in probe shaft 10) of probe shaft 10.
In addition, probe front portion 30 has front-end side region 303, so when making joystick 20 be advanced towards object position in probe front portion 30 around its axle rotation limit on limit, joystick 20 is rotated (even if rotate to either direction to either direction, the front termination electrode 42 being installed in the front end of front-end side region 303 all can not contact with wall of the heart), so the numerous and diverse item noting direction of rotation can be avoided.
In addition, form electrode (ring electrode 41 and front termination electrode 42) three-dimensionally to be configured, even if so relative to the irregular wall of the heart of tool, also the electrode being installed in probe front portion 30 can be made very applicable, when for electroactive in map cardiac, can carry out correctly and map operation rapidly.
Above, one embodiment of the present invention is illustrated, but electrode catheter of the present invention is not limited thereto, can various change be carried out.
Such as, as shown in Figure 6, also in the base end side region 301 in probe front portion 30, ring electrode can be installed, when to be used for by such electrode catheter in map cardiac electroactive, can carry out correctly at wider 3D region and map operation rapidly.
In addition, the ring portion shape of the body region in probe front portion also can be oval.
Description of reference numerals: 100 ... electrode catheter; 10 ... probe shaft; 11 ... 1st pipe; 12 ... 2nd pipe; 20 ... joystick; 21 ... handle; 22 ... swivel plate; 30 ... probe front portion; 301 ... the base end side region in probe front portion; 302 ... the body region in probe front portion; 303 ... the front-end side region in probe front portion; 41 ... ring electrode; 42 ... front termination electrode.
Claims (6)
1. an electrode catheter, is characterized in that,
Possess: probe shaft, it has at least 1 endoporus; Joystick, it is connected with the base end side of described probe shaft; Probe front portion, it is connected with the front of described probe shaft and has and at least 1 of the endoporus of this probe shaft endoporus be communicated with; Multiple ring electrode, they are installed in the periphery in described probe front portion; And the deflection mechanism in described probe front portion,
Described probe front portion has: the body region that the base end side region distally extended from the front end of described probe shaft and the ring portion that formation is circular or oval from the front end in described base end side region also extend,
The deflection mechanism in described probe front portion is following mechanism: by making the fore-end of described probe shaft bend to the both direction vertical with the direction that described ring portion is positioned at centered by the axle of this probe shaft, described probe front portion can be made to deflect to described both direction.
2. electrode catheter according to claim 1, is characterized in that,
Described probe front portion has from the front end of described body region towards the front-end side region that the central shaft of described ring portion distally extends.
3. electrode catheter according to claim 2, is characterized in that,
Termination electrode before the front end in described probe front portion is provided with,
And in described body region and described front-end side region, described ring electrode is installed.
4. electrode catheter according to claim 3, is characterized in that,
In described base end side region, described ring electrode is installed.
5. the electrode catheter according to any one of claim 2 to 4, is characterized in that,
The central shaft of the ring portion of described body region and the central shaft of described probe shaft stagger, and described front-end side region is relative to the inclined of the ring portion of described body region.
6. an electrode catheter, is characterized in that,
Possess: probe shaft, it has at least 1 endoporus; Joystick, it is connected with the base end side of described probe shaft; Probe front portion, it is connected with the front of described probe shaft and has and at least 1 of the endoporus of this probe shaft endoporus be communicated with; Multiple ring electrode, they are installed in the periphery in described probe front portion; And the deflection mechanism in described probe front portion,
Described probe front portion has: the body region that the base end side region distally extended from the front end of described probe shaft and the ring portion that formation is circular or oval from the front end in described base end side region also extend,
The deflection mechanism in described probe front portion is following mechanism: by making the central shaft of the ring portion of described body region bend to both direction in the plane parallel relative to the central shaft of described probe shaft, described probe front portion can be made to deflect to described both direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012075450A JP2013202241A (en) | 2012-03-29 | 2012-03-29 | Electrode catheter |
| JP2012-075450 | 2012-03-29 | ||
| PCT/JP2013/053075 WO2013145891A1 (en) | 2012-03-29 | 2013-02-08 | Electrode catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104220019A true CN104220019A (en) | 2014-12-17 |
Family
ID=49259176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380016298.9A Pending CN104220019A (en) | 2012-03-29 | 2013-02-08 | Electrode catheter |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2013202241A (en) |
| KR (1) | KR20140140048A (en) |
| CN (1) | CN104220019A (en) |
| WO (1) | WO2013145891A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308927A (en) * | 2016-08-22 | 2017-01-11 | 北京市肿瘤防治研究所 | Multi-tip extension type radiofrequency ablation electrode needle |
| CN109528191A (en) * | 2018-11-05 | 2019-03-29 | 山东师范大学 | A kind of encephalic Electroencephalo signal detection and amplification system and method |
| CN110251123A (en) * | 2019-07-09 | 2019-09-20 | 深圳市惠泰医疗器械有限公司 | Can simultaneously coordination electrode conduit two kinds of bendings of head end control mechanism |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104434307B (en) * | 2014-12-19 | 2017-01-25 | 四川锦江电子科技有限公司 | Mapping catheter |
| US10292612B2 (en) * | 2015-09-08 | 2019-05-21 | Oscor Inc. | Electro-physiology mapping catheter loop having atraumatic tip section |
| CN106580467B (en) * | 2017-01-23 | 2017-12-26 | 深圳唯奥医疗技术有限公司 | A kind of low-temperature plasma scalpel with integrated stereo electrod |
| US20210128230A1 (en) * | 2019-10-31 | 2021-05-06 | St. Jude Medical, Cardiology Division, Inc. | Catheter including deflectable shaft and methods of assembling same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5938694A (en) * | 1993-11-10 | 1999-08-17 | Medtronic Cardiorhythm | Electrode array catheter |
| JP2001245864A (en) * | 2000-01-27 | 2001-09-11 | Biosense Webster Inc | Catheter with mapping assembly |
| US20040193239A1 (en) * | 2001-04-27 | 2004-09-30 | Falwell Gary S | Electrophysiology catheter for mapping and/or ablation |
| WO2006092000A1 (en) * | 2005-03-02 | 2006-09-08 | Cathrx Ltd | A heat treatment catheter |
| JP2009039460A (en) * | 2007-08-11 | 2009-02-26 | Japan Lifeline Co Ltd | Electrode catheter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582609A (en) * | 1993-10-14 | 1996-12-10 | Ep Technologies, Inc. | Systems and methods for forming large lesions in body tissue using curvilinear electrode elements |
| JP4925210B2 (en) * | 2007-09-29 | 2012-04-25 | 日本ライフライン株式会社 | Electrode catheter |
-
2012
- 2012-03-29 JP JP2012075450A patent/JP2013202241A/en active Pending
-
2013
- 2013-02-08 CN CN201380016298.9A patent/CN104220019A/en active Pending
- 2013-02-08 WO PCT/JP2013/053075 patent/WO2013145891A1/en active Application Filing
- 2013-02-08 KR KR1020147026780A patent/KR20140140048A/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5938694A (en) * | 1993-11-10 | 1999-08-17 | Medtronic Cardiorhythm | Electrode array catheter |
| JP2001245864A (en) * | 2000-01-27 | 2001-09-11 | Biosense Webster Inc | Catheter with mapping assembly |
| US20040193239A1 (en) * | 2001-04-27 | 2004-09-30 | Falwell Gary S | Electrophysiology catheter for mapping and/or ablation |
| WO2006092000A1 (en) * | 2005-03-02 | 2006-09-08 | Cathrx Ltd | A heat treatment catheter |
| JP2009039460A (en) * | 2007-08-11 | 2009-02-26 | Japan Lifeline Co Ltd | Electrode catheter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106308927A (en) * | 2016-08-22 | 2017-01-11 | 北京市肿瘤防治研究所 | Multi-tip extension type radiofrequency ablation electrode needle |
| CN109528191A (en) * | 2018-11-05 | 2019-03-29 | 山东师范大学 | A kind of encephalic Electroencephalo signal detection and amplification system and method |
| CN109528191B (en) * | 2018-11-05 | 2021-08-17 | 山东师范大学 | Intracranial electroencephalogram physiological signal detection and amplification system and method |
| CN110251123A (en) * | 2019-07-09 | 2019-09-20 | 深圳市惠泰医疗器械有限公司 | Can simultaneously coordination electrode conduit two kinds of bendings of head end control mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013202241A (en) | 2013-10-07 |
| WO2013145891A1 (en) | 2013-10-03 |
| KR20140140048A (en) | 2014-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104220019A (en) | Electrode catheter | |
| US11723574B2 (en) | Catheter having closed electrode assembly with spines of uniform length | |
| JP6771878B2 (en) | Basket catheter with distal tip of microelectrode array | |
| CN101626723B (en) | Electrode catheter | |
| US6711428B2 (en) | Catheter having mapping assembly | |
| AU2015261572A1 (en) | Catheter with high density electrode spine array | |
| JP2016127920A (en) | Basket catheter with improved spine flexibility | |
| EP3300660A1 (en) | Basket catheter conforming to organ using strain-relief elements | |
| JP2018149281A (en) | Electrode assembly having spines with controlled flexibility | |
| US10813590B2 (en) | Electrophysiological mapping catheter | |
| JP6482337B2 (en) | Medical device handle and medical device | |
| US20210068693A1 (en) | Catheter with staggered electrodes spine assembly | |
| JP5339630B2 (en) | Electrode catheter | |
| EP3315086B1 (en) | Elongated medical device suitable for intravascular insertion and method of making such a device | |
| JP5317131B2 (en) | Electrode catheter | |
| JP4925206B2 (en) | Electrode catheter | |
| JP6219805B2 (en) | Electrode catheter | |
| WO2022191165A1 (en) | Electrode catheter and method for manufacturing same | |
| JP5201636B2 (en) | Electrode catheter | |
| JP5265589B2 (en) | Electrode catheter | |
| JP5042387B1 (en) | Electrode catheter | |
| JP2016096874A (en) | Electrode catheter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |