CN101626723A - Electrode catheter - Google Patents
Electrode catheter Download PDFInfo
- Publication number
- CN101626723A CN101626723A CN200780051961A CN200780051961A CN101626723A CN 101626723 A CN101626723 A CN 101626723A CN 200780051961 A CN200780051961 A CN 200780051961A CN 200780051961 A CN200780051961 A CN 200780051961A CN 101626723 A CN101626723 A CN 101626723A
- Authority
- CN
- China
- Prior art keywords
- front portion
- probe
- electrode
- probe body
- endoporus
- 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.)
- Granted
Links
Images
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
- A61B5/6855—Catheters with a distal curved tip
-
- 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
- A61B5/262—Needle electrodes
-
- 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
- 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
- A61B5/6856—Catheters with a distal loop
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physiology (AREA)
- Cardiology (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Electrotherapy Devices (AREA)
- Surgical Instruments (AREA)
Abstract
An electrode catheter comprising: a catheter body (10) having one or more inner pores; a control handle (20) connected to the base end of the catheter body (10); and a catheter tip (30) which is connected to the top end of the catheter body (10), which has an inner pore communicatively connected to at least one of the inner pores of the catheter body (10), and which is formed in a circular, loop-like shape, wherein the catheter tip (30) has two or more ring-shaped electrodes (31) attached around the rim thereof and also has a spherical chip electrode (32) attached to the end part thereof. The electrode catheter can measure a potential almoston the whole area of the catheter tip and hardly damages the inner wall of a blood vessel with the end part of the catheter tip.
Description
Technical field
The present invention relates to possess the electrode catheter of electrode in probe front portion.
Background technology
The beating of heart be by utilize the signal of telecommunication that regularly takes place from the part of heart successively the muscle of cardiac stimulus carry out.But when the mobile generation of this signal of telecommunication was unusual, heart can not correctly be beated.So-called heart disease that Here it is.
As in order to diagnose or to treat the irregular fluctuation of heart and the medical instruments that use, known have an electrode catheter.Electrode catheter is made of probe body, the joystick that is connected the base end side of this probe body, the probe front portion that is connected with the front of probe body usually, at the outer peripheral face of probe front portion a plurality of ring electrodes is installed.
When using the irregular fluctuation of kind electrode probe diagnostics heart, electrode catheter inserted from this probe front portion lead in blood vessel, shift the leading section of probe the inwall of heart onto, measure the current potential of heart inside thus.Therefore, importantly probe front portion is the shape that can be suitable for measuring the position.
At present, as the electrode catheter of the current potential at the positions such as pulmonary vein that are used to measure heart, propose to have the electrode catheter (for example, with reference to patent documentation 1) that forms cyclic probe front portion.As long as probe front portion is formed the interior circumferential portion that ring-type just can be measured blood vessel simultaneously in the footpath direction.
Figure 13 is the axonometric chart of shape of the probe front portion (reflection assembly) of the expression electrode catheter that constitutes patent documentation 1, the leading section 90 of this probe is made of the front zone 93 of the base end side zone 91 of linearity, cyclic body region 92, linearity, and is connected the front of probe body 95.
The body region 92 of probe front portion 90 forms ring-type, in this body region 92 a plurality of ring electrodes (diagram is omitted) is installed.
The helical spring of the stainless steel that the front zone 93 of leading section 90 forms by firmly reeling constitutes, and forms linearity.Ring electrode is not installed as little guide rope performance function in this front zone 93 (helical spring).
Patent documentation 1:(Japan) spy opens the 2003-111740 communique
But there is following problems in the probe of patent documentation 1 record.
(1) the front zone of probe front portion is not installed ring electrode as conductor rope performance function in this front zone, therefore, can not measure current potential in this front zone.
(2) the front zone of probe front portion is made of the helical spring that linearity extends, and utilizes its front end or pushes or when nuzzling up blood vessel, might injured blood vessel.For example, measure the position for probe front portion (body region) is arrived, when intravascular pressure was gone into (being screwed into) probe, blood vessel can be damaged by helical spring front end, and according to this situation, helical spring front end may puncture blood vessel wall.In addition, when being fulcrum (pushing under the state of blood vessel) rotating probe leading section with this front end with helical spring front end, the pushing the position and may damage of this leading section.
Summary of the invention
The present invention is based on aforesaid thing and develops.
First purpose of the present invention is to provide a kind of electrode catheter, and it can measure current potential at the roughly Zone Full of probe front portion, and can be by the front end injured blood vessel inwall of probe front portion.
Further, second purpose of the present invention is to provide a kind of electrode catheter, and it has high mensuration precision.
The electrode catheter of first aspect present invention is characterized by, and possesses: the probe body with at least one endoporus; Be connected the joystick of the base end side of described probe body; Be connected with the front of described probe body, have and the endoporus of at least one connection of the endoporus of this probe body, and form circular cyclic probe front portion, in described probe front portion, in its periphery a plurality of ring electrodes are installed, and globular chip electrode are installed at its front end.
In addition, the electrode catheter of invention second aspect is characterized by, and possesses: the probe body with at least one endoporus; Be connected the joystick of the base end side of described probe body; Be connected with the front of described probe body, have and the endoporus of at least one connection of the endoporus of this probe body, and form oval-shaped cyclic probe front portion; Be installed on a plurality of ring electrodes of the periphery of described probe front portion.
In addition, the electrode catheter of the invention third aspect is characterized by, and possesses: the probe body with at least one endoporus; Be connected the joystick of the base end side of described probe body; Be connected with the front of described probe body, have and the endoporus of at least one connection of the endoporus of this probe body, and form circular cyclic probe front portion; Be installed on a plurality of ring electrodes of the periphery of described probe front portion; Make the deflection mechanism of the fore-end bending of described probe body, the plane of the direction of the fore-end bending that comprises described probe body is left at the promptly round center of the annular shape of described probe front portion.
In addition, the electrode catheter of invention fourth aspect is characterized by, and possesses: the probe body with at least one endoporus; Be connected the joystick of the base end side of described probe body; Be connected with the front of described probe body, have and the endoporus of at least one connection of the endoporus of this probe body, and form spiral probe front portion; Be installed on a plurality of ring electrodes of the periphery of described probe front portion; Make the deflection mechanism of the fore-end bending of described probe body, the central shaft of the spiral of described probe front portion leaves the plane of the direction of the fore-end bending that comprises described probe body.
In the electrode catheter of invention first aspect, preferably possesses the deflection mechanism of described probe front portion.
In the electrode catheter of second invention, preferably possess and make the deflection mechanism of described probe front portion to the promptly oval short-axis direction deflection of this annular shape.
In the electrode catheter of invention second～fourth aspect, also can globular chip electrode be installed at the front end of described probe front portion.
In electrode catheter of the present invention, the diameter of preferred described globular chip electrode is bigger than the external diameter of described probe front portion.Particularly, the ratio (D/d) of the external diameter (d) of the diameter (D) of preferred described globular chip electrode and described probe front portion is more than 1.05.
The electrode catheter of first aspect present invention is equipped with a plurality of ring electrodes in the periphery of probe front portion, and at its front end globular chip electrode is installed, and therefore, can measure current potential at the roughly Zone Full of probe front portion.
And chip electrode is spherical, and therefore, when being pressed in (being screwed into) blood vessel as the front, even blood vessel is pushed by this chip electrode or nuzzled up, the danger of this blood vessel damage is also extremely low.Therefore, can make electrode catheter to target site safety and advance smoothly.
In addition, though with globular chip electrode as fulcrum rotating probe leading section, the danger of inwall (chip electrode push position) damage that is positioned at fulcrum is also extremely low.So, can therefore, can measure the current potential of wide region continuously and safely with chip electrode as fulcrum rotating probe leading section.
In addition, globular chip electrode can easily recognize in the X line image, thus, can easily hold integral position, state of probe front portion etc.
According to the electrode catheter of invention second aspect, has the effect of the mensuration precision that can improve current potential.Promptly, saying of pulmonary venous section configuration strictness is not positive circle, but it is oval, therefore, it is more suitable for pulmonary venous inwall that ring is shaped as oval-shaped probe front portion, and the distance from pulmonary venous inwall to ring electrode does not have difference ring electrode separately, be essentially certain, therefore and orbicular ring compare, the mensuration precision of current potential improves.
In addition, make the electrode catheter of probe front portion according to possessing to the invention second aspect of the deflection mechanism of the promptly oval short-axis direction deflection of its annular shape, can in the X line image, recognize the elliptical shape of this probe front portion, therefore, can be partial to direction (oval short-axis direction) according to it operates.
According to the electrode catheter of the invention third aspect and invention fourth aspect, while probe front portion is being pressed into blood vessel etc. when mobile, the annular shape of probe front portion is difficult for collapse, and the mensuration precision of current potential improves.
According to described ratio (D/d) is electrode catheter of the present invention more than 1.05, and the front end face of probe front portion is fully covered by chip electrode, and the front end face (front-end edge) that can positively avoid probe front portion contacts with blood vessel.In addition, globular chip electrode has relatively large surface area, and therefore, obtaining easily of current potential left mensuration position (inwall) to a certain extent and also can be measured.
Description of drawings
Fig. 1 is the axonometric chart of an embodiment of expression electrode catheter of the present invention;
Fig. 2 is the part amplification stereogram of Fig. 1;
Fig. 3 is the key diagram from the electrode catheter shown in the front with the aid of pictures 1;
Fig. 4 is the axonometric chart of the state after the probe front portion deflection (about 180 °) of expression electrode catheter shown in Figure 1;
Fig. 5 is the key diagram of the state after the probe front portion deflection (about 90 °) of expression electrode catheter shown in Figure 1, (a) is front elevation, (b) is side view;
Fig. 6～Fig. 8 is the key diagram of the user mode of expression electrode catheter shown in Figure 1;
Fig. 9 is the profile that schematically shows the internal structure of electrode catheter shown in Figure 1;
Figure 10 is the part amplification profile of Fig. 9;
Figure 11 is that expression possesses the skeleton diagram that the integral body of the probe system of electrode catheter shown in Figure 1 constitutes;
Figure 12 is a key diagram of seeing the electrode catheter of another embodiment of the present invention from front;
Figure 13 is the axonometric chart of the shape of the expression probe front portion that constitutes existing electrode catheter.
Symbol description:
1, electrode catheter
2, electrode catheter
10, probe body
20, joystick
30, probe front portion
11, first pipe
12, second pipe
21, handle
22, knob
33, tee pipe
31, ring electrode
32, chip electrode
41, stay cord
42, leaf spring
43, first serpentine pipe
44, second serpentine pipe
51, heart yearn
61, lead-in wire
62, adapter
63, cable
64, electrocardiograph
65, monitor
70, probe front portion
The specific embodiment
Fig. 1 is the axonometric chart of an embodiment of expression electrode catheter of the present invention, Fig. 2 is the part amplification stereogram of Fig. 1, Fig. 3 is the key diagram from the electrode catheter shown in the front with the aid of pictures 1, Fig. 4 is the axonometric chart of the state after the probe front portion deflection (about 180 °) of expression electrode catheter shown in Figure 1, Fig. 5 is the key diagram of the state after the probe front portion deflection (about 90 °) of expression electrode catheter shown in Figure 1, (a) be front elevation, (b) be side view, Fig. 6～Fig. 8 is the key diagram of the user mode of expression electrode catheter shown in Figure 1, Fig. 9 is the profile that schematically shows the internal structure of electrode catheter shown in Figure 1, Figure 10 is the part amplification profile of Fig. 9, Figure 11 is that expression has the skeleton diagram that the integral body of the probe system of electrode catheter shown in Figure 1 constitutes, and Figure 12 is a key diagram of seeing the electrode catheter of another embodiment of the present invention from front.
[first embodiment]
The electrode catheter 1 of present embodiment possesses probe body 10, joystick 20, form circular cyclic probe front portion 30.
Probe body 10 is the elongated tubular body structures with an endoporus, is made of first pipe, 11 and second pipe 12.
First pipe 11 requires certain flexibility (bendability), the incompressibility of tube axial direction, torsional rigid.Utilize first pipe, 11 torsional rigids that have, the rotation torque from control handle 20 can be passed to probe front portion 30.
11 there is no particular limitation as first pipe, can enumerate with stainless steel silk will (Port リ エ one テ Le Block ロ Star Network ア ミ De: polyether amide block copolymer) the pipe braiding that waits resin to constitute forms (woollen yarn knitting is managed) by polyurethane, nylon, PEBAX.
The length of first pipe 11 for example is set at 50～200cm.
Constituent material as second pipe 12 can use avirulent resin.In addition, second pipe 12 weaves, and is therefore more soft than first pipe 11.
The length of second pipe 12 for example is set at 3～10cm, more preferably is set at 4～7cm.
External diameter as probe body 10 (first pipe, 11 and second pipe 12) is preferably set to below the 2.6mm, more preferably is set at below the 2.4mm, is preferably set to 2.3～2.4mm especially.
The internal diameter of probe body 10 is from guaranteeing to restrict or the receiving space of lead-in wire etc., and guarantees that the viewpoint of torsional rigid (wall thickness) considers, for example, when external diameter is 2.3～2.4mm, preferred 1.5～1.7mm scope.
By Spin Control handle 20, its rotation torque passes to probe front portion 30 via probe body 10.
In addition, as shown in Figure 4, slide at base end side by making knob 22, utilize deflection described later mechanism to make second to manage 12 bendings, probe front portion 30 is partial to thereupon.
Thereby, by operating control handle 20, make 30 rotations of probe front portion, further deflection thus, can be induced to target site with probe front portion 30.
Probe front portion 30 constitutes, and the tee pipe 33 that is connected the front of probe body 10 (second pipe 12) forms circular ring-type.
Outer peripheral face in probe front portion 30 (tee pipe 33) is equipped with 9 ring electrodes 31.In addition, the front end in probe front portion 30 is equipped with globular chip electrode 32.
As shown in Figure 3, constitute the circular basically ring-type of tee pipe 33 formation of probe front portion 30.Thus, can measure the interior circumferential portion of blood vessel simultaneously in the footpath direction.In addition, probe front portion 30 is not the ring-type of the sealing of smooth circle, but with chip electrode 32 as foremost spiral ring (when being called " circle ", " ellipse " in the present invention, strict saying comprises spiral type).Thereby, can easily in blood vessel, advance at the head for target position.
The tee pipe 33 that constitutes probe front portion 30 has the endoporus that the endoporus with probe body 10 (second pipe 12) is communicated with.
Can enumerate the resin material of the such organism admissibility of polyurethane or PEBAX as the constituent material of tee pipe 33.
The ring electrode 31 that is installed on probe front portion 30 is made of platinum, gold, iridium or their conductive materials such as alloy.There is no particular limitation as the installation method of ring electrode 31, utilize binding agent to be fixed on the method on the tee pipe 33 except shaping being processed as cyclic metal material, can enumerate the method that forms ring electrode by film forming such as sputtering method, ion beam vapour deposition methods.
In addition, much less, the quantity of ring electrode 31 is not limited only to 9.
Preferred 6～20 of the quantity of ring electrode 31, more preferably 8～12.
The characteristic point that the electrode catheter 1 of present embodiment has is, the front end being formed at circular cyclic probe front portion 30 is equipped with globular chip electrode 32.
Thus, the roughly Zone Full of probe front portion 30 promptly, can be set at the mensuration zone of current potential to the zone of the front end that chip electrode 32 is installed from the ring electrode 31 that is in base end side.
And, because chip electrode 32 is spherical, promptly uses this chip electrode 32 or push or the blood vessel that nuzzles up, can not damage this blood vessel yet.
For example, as shown in Figure 6, when in pulmonary vein P, being pressed into electrode catheter 1 (being screwed into), the inwall of pulmonary vein P is pushed by chip electrode 32 or is nuzzled up, still, because chip electrode 32 is spherical, therefore, the danger of this inwall damage is extremely low, thereby can make motor probe 1 safety and advance smoothly.
In Fig. 6, arrow A is represented the direction that is pressed into of electrode catheter 1, common direction of rotation when arrow B is represented to be pressed into.
In addition, as shown in Figure 7, even with globular chip electrode 32 as fulcrum, or rotating probe leading section 30, or enlarge, dwindle the ring footpath, the danger of inwall S (chip electrode 32 push position) damage that is positioned at fulcrum is also extremely low.Like this, chip electrode 32 rotation of probe front portion 30 can be carried out as fulcrum, therefore, the current potential of wide region can be measured continuously and safely.
In addition, as shown in Figure 8, be the inwall butt that makes ring electrode 31 and pulmonary vein P or approaching, even with globular chip electrode 32 is fulcrum, direction (direction that arrow C is represented) to the ring footpath that enlarges probe front portion 30 applies rotation torque, the danger of inwall S damage that is positioned at fulcrum is also extremely low, can implement the hole enlargement operation of this probe front portion safely.
Diameter (D) as globular chip electrode 32 is preferably set to 1.5～2.0mm, is preferably set to 1.8mm especially.
In addition, the diameter of chip electrode 32 (D) need be bigger than the external diameter (d) of probe front portion 30, particularly, is preferably set to more than 1.05 times of external diameter (d) of probe front portion 30, more preferably is set at 1.05～2.5 times.
Because ratio (D/d) is more than 1.05, therefore, the front end face of probe front portion 30 can fully cover by chip electrode 32, and the front-end edge that can positively avoid probe front portion 30 exposes and contacts with blood vessel, can positively guarantee atraumatic effect.
In addition, because ratio (D/d) is more than 1.05, globular chip electrode 32 has big relatively surface area, so obtaining of current potential become easily, measures position (inwall) even leave to a certain extent, also can measure current potential.
As shown in Figure 5, under with the state after i.e. second pipe, 12 bendings of fore-end of probe body 10, when seeing probe front portion 30 from the front, shown in Fig. 5 (a), second pipe 12 leaves the promptly round center (among the figure, the central shaft of second pipe 12 that dots leaves the centrage of the circle of representing with dotted line) of annular shape of probe front portion 30 and extends.That is, the imaginary plane that comprises the second crooked pipe departs from the promptly round center of annular shape.
In other words, when making 12 bendings of second pipe, the center that the annular shape of probe front portion 30 is promptly justified is with respect to parallel the moving of imaginary plane of the direction that comprises 12 bendings of second pipe.That is it is non-intersect, to comprise the promptly round center of the imaginary plane of second pipe, 12 bending direction and annular shape.
In Fig. 5 (a), circular rings is extended and formed in probe front portion 30 from second pipe 12 to clockwise direction.And, in this case, comprise the imaginary plane center more close right side (from the front of probe front portion 30 be seen as right side) promptly round of the bending direction of second pipe 12 than annular shape.
In addition, the shape of probe front portion 30 is helical form strictly speaking.That is, probe front portion 30 forms spiral (left-handed, Z volume) (from the spiral of second pipe 12 to the clockwise direction extension) to the left.And the central axle designs of the spiral of probe front portion 30 is to leave the imaginary plane of the direction that comprises 12 bendings of second pipe.That is, the central shaft of the spiral of probe front portion 30 is with respect to parallel the moving of imaginary plane of the direction that comprises 12 bendings of second pipe.
In addition, in this case, the imaginary plane of direction that comprises 12 bendings of second pipe is than the more close right side of the central shaft of the spiral of probe front portion 30 (being seen as the right side from the front of probe front portion 30).
Under the coiling direction situation conversely of the circular rings of probe front portion 30 (from second pipe 12 to the situations of counterclockwise extending and form circular rings), comprise the imaginary plane center more close left side promptly round of the direction of second pipe, 12 bendings than annular shape.
In addition, the spiral of probe front portion 30 is under the situation of right-hand screw (dextrorotation, S reel), and the imaginary plane of direction that comprises 12 bendings of second pipe is than the more close left side of the central shaft of the spiral of probe front portion 30.
(front in probe front portion 30 is seen by making this shape, from its annular shape is the center of a bit leaving this circle on the circumference and extending, the shape that connects second pipe 12), for example, under the state that makes 12 bendings of second pipe, make cyclic probe front portion 30 when pushing blood vessel etc. and move (inserting electrify electrode probe 1), the distortion of probe front portion 30 such as be difficult for causing that ring is opened.This is that its pressing force passes to the cardinal extremity part (having high relatively inflexible part) of probe front portion 30 because when making probe front portion 30 push blood vessel etc.
Front in probe front portion is seen, at (center of circle on above-mentioned imaginary plane time) under the situation that the fore-end of probe body (second pipe) extends by the promptly round center of the annular shape of probe front portion, when the direction of pressing force tilts a little, fore-end in probe front portion also is subjected to pressing force, and ring is opened easily.
In the present embodiment, the distance (p) as apart from second pipe centrage 12 central shaft, circle when radius of a circle is set at (r), is preferably 0.01r～0.8r.
As Fig. 9 and shown in Figure 10, the electrode catheter 1 of present embodiment possesses the deflection mechanism that is used to make probe front portion 30 deflections.This deflection mechanism has stay cord 41 and leaf spring 42.In addition, in Fig. 9, be illustrated as annular probe front portion 30 point-blank.
The stay cord 41 that constitutes deflection mechanism extends at the endoporus of probe body 10.The base end part 41B of stay cord 41 is fixed in the inside of joystick 20.Joystick 20 is provided with piston mechanism (diagram is omitted), and it makes stay cord 41 move (stretching) to base end side by knob 22 is slided to base end side from state shown in Figure 9.On the other hand, the leading section 41A of stay cord 41 is fixed in the leading section of leaf spring 42.
Can enumerate rustless steel and Ni-Ti alloy etc. as the constituent material of stay cord 41.The surface of stay cord 41 is preferred with the special teflon (registered trade mark) of PTFE[] etc. covering.The diameter of stay cord 41 for example can be set at 0.1～0.5mm.
The cardinal extremity that constitutes the leaf spring 42 of deflection mechanism is fixed in the front end of first serpentine pipe 43.
First serpentine pipe 43 constitutes for the wire coil coiled coiled type of right angle or circular cross-section, and in the endoporus extension of first pipe 11, and conduct prevents the reinforcing material performance function of the crushing of first pipe 11.
The part of stay cord 41 (scope from the front end of first serpentine pipe 43 to the leading section of leaf spring 42) is surrounded by second serpentine pipe 44.
The cardinal extremity of second serpentine pipe 44 is fixed in the front end of first serpentine pipe 43, and its front end is fixed in the leading section (than the fixed position of the leading section 41A of stay cord 41 a little near base end side) of leaf spring 42.
The internal diameter of second serpentine pipe 44 is bigger slightly than the diameter of stay cord 41, and stay cord 41 can move (slip) in second serpentine pipe 44.
Second serpentine pipe 44 preferably is made of stainless steel and other metal materials, and its outer surface is covered by non-conductive parts.
Be fixed with the leading section 41A of stay cord 41 at the leading section of leaf spring 42, and, also be fixed with the base end part of heart yearn 51 with shape memory characteristic in its front.Heart yearn 51 extends along the endoporus of tee pipe 33, and as shown in figure 10, its leading section is fixed on the chip electrode 32.
The annular shape of heart yearn 51 memory probe front portions 30 by applying power easy deformation (for example being deformed into linearity), still, reverts to annular shape after the removal power.
Constituent material as heart yearn 51 can be enumerated the Ni-Ti alloy.Preferred 54: 46～57: 43 of the Ni of Ni-Ti alloy and the ratio of Ti.Can enumerate Nitinol (ニ チ ノ one Le) as preferred Ni-Ti alloy.
The following effect of deflection mechanism performance of probe front portion 30.Promptly, the operator makes the knob 22 of joystick 20 when base end side slides, utilize not shown piston mechanisms in the joystick 20 that stay cord 41 is moved to base end side, thus, at its leading section, be fixed with leaf spring 42 bendings of the leading section 41A of stay cord 41, comprise fore-end (the second pipe 12) bending of the probe body 10 of this leaf spring 42, consequently, probe front portion 30 deflections.And when making the slip of knob 22 forward end sides and being back to the origin-location, leaf spring 42 becomes linearity, and probe front portion 30 reverts to original direction.In addition, much less, the deflection mechanism of electrode catheter of the present invention is not limited only to this structure.
On a plurality of ring electrodes 31 and chip electrode 32, be connected with lead-in wire 61 respectively.The lead-in wire 61 that is connected with ring electrode 31 enters the endoporus of tee pipe 33 respectively from the pore of the tube wall that is formed at tee pipe 33, extend along the endoporus of tee pipe 33, the endoporus of second pipe 12, the endoporus of first pipe 11 and the endoporus (omitting diagram) of joystick 20, each base end part of lead-in wire 61 is electrically connected with the adapter 62 of the cardinal extremity that is arranged at joystick 20.
Lead-in wire 61 is configured to can be mobile a little in the endoporus of probe body 10 (second pipe, 12, first pipe 11), and thus, even make probe front portion 30 deflections, they can be not damaged yet.
As shown in figure 11, electrode catheter 1 is connected with electrocardiograph 64 by the cable 63 that is connected with adapter 62, and the current potential of measuring by electrode catheter 1 shows on the monitor 65 of electrocardiograph 64.
The electrode catheter 1 of present embodiment advances to target site (for example pulmonary vein of heart) in blood vessel after inserting in so main tremulous pulse of thigh tremulous pulse or the vein.
At this moment, while it is desirable to be positioned at direction (with the arrow B indicated direction of Fig. 6) rotation that the chip electrode 32 of front draws back electrode catheter 1 is advanced.
And, behind the mensuration position of arrival current potential, as shown in Figure 8,, enlarge the ring footpath of probe front portion 30 by being fulcrum with chip electrode 32, make ring electrode 31 and the inwall butt of measuring the position or approaching.These operations are normally while monitoring that the X line image implements, and globular chip electrode 32 can easily recognize in the X line image, thus, can easily hold the integral position, state of probe front portion 30 etc.
[second embodiment]
Figure 12 is a key diagram of seeing the electrode catheter of another embodiment of the present invention from front.
In addition, use identical symbol for the element identical or corresponding with first embodiment.
The characteristic point that the electrode catheter 2 of present embodiment has is: the probe front portion 70 that is connected the front of probe body 10 is not positive circle, but forms oval-shaped ring-type.Probe front portion 70 be annular ellipse, as the ratio of minor axis and major diameter, preferred 1: 1.1～1: 3, more preferably 1: 1.1～1: 2.
The electrode catheter 2 of present embodiment possesses the deflection mechanism of probe front portion 70.This deflection mechanism is that to make probe front portion 70 be the structure of oval-shaped short-axis direction (direction of representing with arrow F in Figure 12) deflection to annular shape.
Also can adopt and the first embodiment identical mechanism mechanism that also can adopt other as such deflection mechanism.
Under the situation of the current potential of measuring internal blood vessel by a plurality of ring electrodes that are installed on probe front portion,, it is desirable between a plurality of ring electrodes, will be set at necessarily apart from the distance of blood vessel in order to improve the mensuration precision of current potential.
But according to statistics, the pulmonary venous section configuration of human body is strictly said and is not positive circle, but is similar to ellipse.Therefore, the ring of probe front portion is shaped as positive when circular, is being installed between this a plurality of ring electrodes, apart from the distance of pulmonary vein inwall not necessarily.
So, the annular shape of probe front portion 70 is set at ellipse, thus, this probe front portion 70 is more suitable for pulmonary venous inwall, 31 distance can be together 31 of ring electrodes from pulmonary venous inwall to ring electrode, therefore and the orbicular ring mensuration precision of comparing and to improve current potential be essentially certain.
In addition, the electrode catheter 2 of present embodiment possesses makes the deflection mechanism of probe front portion 70 to the short-axis direction deflection of ellipse, therefore, when monitoring that the X line image carries out the operation of electrode catheter 2, in the X line image, can recognize the elliptical shape of probe front portion 70, hold its deflection direction (oval short-axis direction) in advance, can be partial to direction according to it and operate, therefore, induce operation to wait to be easier to the target site of probe front portion 70.
Electrode catheter of the present invention can be applied to cardiopathic diagnosis suitably, still, is not limited thereto, and also can be applied to cardiopathic treatment, for example, also can use when burning unusual electric active site.
Claims (8)
1, a kind of electrode catheter is characterized in that, this electrode catheter possesses:
Probe body with at least one endoporus;
Be connected the joystick of the base end side of described probe body;
Probe front portion, it is connected with the front of described probe body, and have and the endoporus of at least one connection of the endoporus of this probe body, and form circular ring-type,
In described probe front portion, in its periphery a plurality of ring electrodes are installed, at its front end globular chip electrode is installed simultaneously.
2, a kind of electrode catheter is characterized in that, this electrode catheter possesses:
Probe body with at least one endoporus;
Be connected the joystick of the base end side of described probe body;
Probe front portion, it is connected with the front of described probe body, has and the endoporus of at least one connection of the endoporus of this probe body, and forms oval-shaped ring-type;
Be installed on a plurality of ring electrodes of the periphery of described probe front portion.
3, a kind of electrode catheter is characterized in that, this electrode catheter possesses:
Probe body with at least one endoporus;
Be connected the joystick of the base end side of described probe body;
Probe front portion, it is connected with the front of described probe body, has and the endoporus of at least one connection of the endoporus of this probe body, and forms circular ring-type;
Be installed on a plurality of ring electrodes of the periphery of described probe front portion;
Make the deflection mechanism of the fore-end bending of described probe body,
The plane of the direction of the fore-end bending that comprises described probe body is left at the promptly round center of the annular shape of described probe front portion.
4, a kind of electrode catheter is characterized in that, this electrode catheter possesses:
Probe body with at least one endoporus;
Be connected the joystick of the base end side of described probe body;
Probe front portion, it is connected with the front of described probe body, has and the endoporus of at least one connection of the endoporus of this probe body, and forms spiral type;
Be installed on a plurality of ring electrodes of the periphery of described probe front portion;
Make the deflection mechanism of the fore-end bending of described probe body,
The central shaft of the spiral of described probe front portion leaves the plane of the direction of the fore-end bending that comprises described probe body.
5, electrode catheter as claimed in claim 1 is characterized in that,
The deflection mechanism that possesses described probe front portion.
6, electrode catheter as claimed in claim 2 is characterized in that,
Possess and make the deflection mechanism of described probe front portion to the promptly oval short-axis direction deflection of its annular shape.
7, as each described electrode catheter of claim 2～4, it is characterized in that,
Front end in described probe front portion is equipped with globular chip electrode.
8, as claim 1 or 7 described electrode catheters, it is characterized in that,
The diameter of described globular chip electrode is bigger than the external diameter of described probe front portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP088618/2007 | 2007-03-29 | ||
| JP2007088618A JP4027411B1 (en) | 2007-03-29 | 2007-03-29 | Electrode catheter |
| PCT/JP2007/061730 WO2008120405A1 (en) | 2007-03-29 | 2007-06-11 | Electrode catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101626723A true CN101626723A (en) | 2010-01-13 |
| CN101626723B CN101626723B (en) | 2013-01-30 |
Family
ID=38935758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800519613A Expired - Fee Related CN101626723B (en) | 2007-03-29 | 2007-06-11 | Electrode catheter |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4027411B1 (en) |
| KR (1) | KR100949436B1 (en) |
| CN (1) | CN101626723B (en) |
| HK (1) | HK1135300A1 (en) |
| WO (1) | WO2008120405A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102579031A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
| CN102579037A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Coronary vein mapping catheter and preparation method thereof |
| CN102626309A (en) * | 2011-03-27 | 2012-08-08 | 西安富德医疗电子有限公司 | Electrode for nerve electrophysiology monitoring in high field intensity magnetic resonance compatible technology |
| CN103027677A (en) * | 2011-10-04 | 2013-04-10 | 韦伯斯特生物官能(以色列)有限公司 | Mapping catheter with spiral electrode assembly |
| CN103784181A (en) * | 2014-03-06 | 2014-05-14 | 山东威高集团医用高分子制品股份有限公司 | Disposable monopole probe |
| CN104434307A (en) * | 2014-12-19 | 2015-03-25 | 四川锦江电子科技有限公司 | Mapping catheter |
| CN104684468A (en) * | 2013-01-30 | 2015-06-03 | 日本来富恩株式会社 | Electrode catheter |
| CN105188826A (en) * | 2013-04-30 | 2015-12-23 | 圣犹达医疗用品卢森堡控股有限公司 | Control handles for catheters |
| CN105919589A (en) * | 2016-05-27 | 2016-09-07 | 深圳市惠泰医疗器械有限公司 | Magnetic-positioning ring mapping electrode catheter provided with sensor and disc-like spiral structure at head end |
| 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 |
| CN111526835A (en) * | 2018-01-02 | 2020-08-11 | 圣犹达医疗用品心脏病学部门有限公司 | Electroporation catheter including distal ring |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2011252743B2 (en) * | 2010-05-11 | 2015-09-10 | Cathrx Ltd | A catheter shape adjustment mechanism |
| KR101070810B1 (en) | 2010-12-16 | 2011-10-06 | 강원대학교산학협력단 | Ventricular assist device cannula with electrode |
| JP5232284B2 (en) * | 2011-10-21 | 2013-07-10 | 日本ライフライン株式会社 | Electrode catheter |
| JP5660737B2 (en) * | 2012-07-20 | 2015-01-28 | 日本ライフライン株式会社 | Electrode catheter and method for producing the same |
| CN102908191A (en) | 2012-11-13 | 2013-02-06 | 陈绍良 | Multipolar synchronous pulmonary artery radiofrequency ablation catheter |
| US11241267B2 (en) | 2012-11-13 | 2022-02-08 | Pulnovo Medical (Wuxi) Co., Ltd | Multi-pole synchronous pulmonary artery radiofrequency ablation catheter |
| KR101459941B1 (en) | 2013-08-23 | 2014-11-07 | 고려대학교 산학협력단 | Multi-electrode catheter for mapping and ablating lesion parts |
| KR101464085B1 (en) * | 2013-09-03 | 2014-11-21 | 연세대학교 산학협력단 | Multi electrode pulmonary vein circular catheter with angiography lumen |
| KR101501837B1 (en) * | 2013-09-03 | 2015-03-12 | 연세대학교 산학협력단 | Multi electrode pulmonary vein circular catheter |
| AU2015287691B2 (en) * | 2014-07-11 | 2019-04-11 | Pulnovo Medical (Wuxi) Co., Ltd. | Multi-pole synchronous pulmonary artery radiofrequency ablation catheter |
| JP6282209B2 (en) * | 2014-10-08 | 2018-02-21 | 日本ライフライン株式会社 | Chemical ablation device and chemical ablation system |
| KR101916332B1 (en) | 2016-02-22 | 2018-11-08 | 재단법인 아산사회복지재단 | Method for manufactureing head of catheter for cautery using eletric gliding |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1233716B1 (en) * | 1999-11-22 | 2014-07-30 | Boston Scientific Limited | Loop structures for supporting diagnostic and therapeutic elements in contact with body tissue |
| US6628976B1 (en) * | 2000-01-27 | 2003-09-30 | Biosense Webster, Inc. | Catheter having mapping assembly |
| US6496712B1 (en) * | 2000-05-01 | 2002-12-17 | Biosense Webster, Inc. | Method and apparatus for electrophysiology catheter with enhanced sensing |
| US6669693B2 (en) * | 2001-11-13 | 2003-12-30 | Mayo Foundation For Medical Education And Research | Tissue ablation device and methods of using |
| TWI235073B (en) * | 2002-08-20 | 2005-07-01 | Toray Industries | Catheter for treating cardiac arrhythmias |
| EP1565118B1 (en) * | 2002-10-31 | 2016-03-09 | Boston Scientific Scimed, Inc. | Electrophysiology catheter with biased tip |
| US20050033136A1 (en) * | 2003-08-01 | 2005-02-10 | Assaf Govari | Catheter with electrode strip |
| US8046049B2 (en) * | 2004-02-23 | 2011-10-25 | Biosense Webster, Inc. | Robotically guided catheter |
-
2007
- 2007-03-29 JP JP2007088618A patent/JP4027411B1/en active Active
- 2007-06-11 KR KR1020097019318A patent/KR100949436B1/en active IP Right Grant
- 2007-06-11 WO PCT/JP2007/061730 patent/WO2008120405A1/en active Application Filing
- 2007-06-11 CN CN2007800519613A patent/CN101626723B/en not_active Expired - Fee Related
-
2010
- 2010-02-12 HK HK10101659.8A patent/HK1135300A1/en not_active IP Right Cessation
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626309A (en) * | 2011-03-27 | 2012-08-08 | 西安富德医疗电子有限公司 | Electrode for nerve electrophysiology monitoring in high field intensity magnetic resonance compatible technology |
| CN102626309B (en) * | 2011-03-27 | 2014-11-26 | 西安富德医疗电子有限公司 | Electrode for nerve electrophysiology monitoring in high field intensity magnetic resonance compatible technology |
| CN103027677A (en) * | 2011-10-04 | 2013-04-10 | 韦伯斯特生物官能(以色列)有限公司 | Mapping catheter with spiral electrode assembly |
| CN102579037A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Coronary vein mapping catheter and preparation method thereof |
| CN102579031A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
| CN102579031B (en) * | 2012-01-19 | 2014-10-01 | 洪浪 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
| CN102579037B (en) * | 2012-01-19 | 2015-02-04 | 洪浪 | Coronary vein mapping catheter and preparation method thereof |
| TWI569828B (en) * | 2013-01-30 | 2017-02-11 | 日本來富恩有限公司 | Electrode catheter |
| CN104684468A (en) * | 2013-01-30 | 2015-06-03 | 日本来富恩株式会社 | Electrode catheter |
| CN105188826B (en) * | 2013-04-30 | 2018-11-13 | 圣犹达医疗用品国际控股有限公司 | The control handle of conduit |
| CN105188826A (en) * | 2013-04-30 | 2015-12-23 | 圣犹达医疗用品卢森堡控股有限公司 | Control handles for catheters |
| US10010700B2 (en) | 2013-04-30 | 2018-07-03 | St Jude Medical International Holding S.À F | Control handles for catheters |
| CN103784181A (en) * | 2014-03-06 | 2014-05-14 | 山东威高集团医用高分子制品股份有限公司 | Disposable monopole probe |
| CN104434307A (en) * | 2014-12-19 | 2015-03-25 | 四川锦江电子科技有限公司 | Mapping catheter |
| CN105919589A (en) * | 2016-05-27 | 2016-09-07 | 深圳市惠泰医疗器械有限公司 | Magnetic-positioning ring mapping electrode catheter provided with sensor and disc-like spiral structure at head end |
| CN111526835A (en) * | 2018-01-02 | 2020-08-11 | 圣犹达医疗用品心脏病学部门有限公司 | Electroporation catheter including distal ring |
| 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 |
| CN110251123B (en) * | 2019-07-09 | 2024-05-24 | 深圳惠泰医疗器械股份有限公司 | Control mechanism capable of simultaneously controlling two bending shapes of electrode catheter head end |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008120405A1 (en) | 2008-10-09 |
| CN101626723B (en) | 2013-01-30 |
| JP4027411B1 (en) | 2007-12-26 |
| JP2008245767A (en) | 2008-10-16 |
| KR100949436B1 (en) | 2010-03-25 |
| KR20090104143A (en) | 2009-10-05 |
| HK1135300A1 (en) | 2010-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101626723B (en) | Electrode catheter | |
| JP7183070B2 (en) | Multi-electrode array catheter basket | |
| US20210093377A1 (en) | Flexible multi-arm catheter with diametrically opposed sensing electrodes | |
| EP2417998B1 (en) | Guidewire | |
| US10660573B2 (en) | Sensor guide wire with shape memory tip | |
| JP2018118039A (en) | Multi-electrode assembly with controlled folding mechanism | |
| EP3381394A1 (en) | Catheter with improved loop contraction and greater contraction displacement | |
| EP3342364B1 (en) | Catheter with tapered support member for variable arcuate distal assembly | |
| CN104220019A (en) | Electrode catheter | |
| JP2017035484A (en) | High electrode density basket catheter | |
| WO2018037594A1 (en) | Handle for medical device and medical device | |
| JP2017200584A (en) | Varying diameter catheter distal end design for decreased distal hub size | |
| JP6113682B2 (en) | Medical device handle and medical device | |
| JP4925210B2 (en) | Electrode catheter | |
| JP4925206B2 (en) | Electrode catheter | |
| CN214632164U (en) | Electrophysiology mapping catheter device | |
| JP4236206B1 (en) | Electrode catheter | |
| TW201223503A (en) | Electrode catheter | |
| JP6219805B2 (en) | Electrode catheter | |
| WO2021220847A1 (en) | Catheter for cardiac potential measurement | |
| EP4147742A2 (en) | Sheath and catheter having means for controlling radial orientation thereof | |
| 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 | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1135300 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1135300 Country of ref document: HK |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20210611 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |