CN105142708A

CN105142708A - Catheter having distal end capable of being deflected by operation

Info

Publication number: CN105142708A
Application number: CN201480022925.4A
Authority: CN
Inventors: 森谦二
Original assignee: Japan Lifeline Co Ltd
Current assignee: Japan Lifeline Co Ltd
Priority date: 2013-07-25
Filing date: 2014-05-28
Publication date: 2015-12-09
Anticipated expiration: 2034-05-28
Also published as: WO2015011986A1; JP2015023952A; CN105142708B; JP5697273B2; KR101871609B1; KR20160030949A

Abstract

A catheter having a distal end capable of being deflected by operation is an electrode catheter (100) provided with: a catheter shaft (10) which has a flexible portion (10A) at the distal end thereof; a distal end electrode (30); and operating wires (41, 42) which are formed from twisted wires. The operating wires (41, 42) are respectively inserted through lumens (11L, 12L) formed in the flexible portion (10A). In the flexible portion (10A), cylindrical high-rigidity members (51, 52) having center axes (M51, M52) are arranged on a third imaginary plane (P3) so as to face each other across the center axis (M10) of the shaft (10), the third imaginary plane (P3) being formed by rotating a second imaginary plane (P2), which is perpendicular to a first imaginary plane (P1), in the same direction as the direction of twisting of the twisted wires by an angle (theta) about the center axis (M10) of the shaft (10). In the catheter having a distal end capable of being deflected by operation, although the operating wires are formed from the twisted wires, the shape of the flexible portion is capable of being changed on substantially the same plane.

Description

Front end can the catheter of deflecting operation

Technical field

The present invention relates to front end can the catheter of deflecting operation, in more detail, relate to by operative configuration operating portion in vitro, can make to be inserted into the fore-end flexure of endoceliac catheter, and make the front end towards change of its front end can the catheter of deflecting operation.

Background technology

Such as, in the electrode catheter etc. of inside being inserted into heart via arteries, need to operate in the operating portion rear end (peri position end or on hand side) that is configured at external catheter assembled make the front end (amphi position end) of the catheter be inserted in heart towards change (deflection).

Carry out operating as side on hand the mechanism that the front end of catheter is deflected, there will be a known the following mechanism shown in patent documentation 1.In the mechanism shown in patent documentation 1, at the inside of the fore-end of catheter configuration tool leaf spring springy, be connected and fixed the front end of behaviour's position in the one side of this leaf spring or two sides.In addition, by tractive operation behaviour position rear end leaf spring bend, make the fore-end of catheter edge bend with the direction of the plane orthogonal of leaf spring, thus make the front end of catheter towards change.

In addition, can in the electrode catheter of deflecting operation in front end, for the viewpoint such as to come off of termination electrode before avoiding being fixed on front end, the applicant also proposes the front end relative to front termination electrode web spring, and can the catheter (patent documentation 2 with reference to following) of deflecting operation in the front end of the front end of this front end Electrode connection fixing operation line.

Front end according to patent documentation 2 can the catheter of deflecting operation, the front termination electrode forming this catheter not only links with the front end of drain tubular axis and the front end of leaf spring, also be connected and fixed, therefore, it is possible to effectively prevent coming off of front termination electrode relative to the front end of behaviour's position.

Fig. 9 ~ Figure 11 illustrates that front end can 1 example of electrode catheter of deflecting operation.

This electrode catheter 900 has: the drain tubular axis 910 that there is flex section 910A in front end, be fixed on drain tubular axis 910 front end before termination electrode 930; By inserted through in the inside of drain tubular axis 910 and respective front end is connected and fixed on front termination electrode 930, respective rear end can for the 1st behaviour's position 941 of tractive operation and the 2nd behaviour's position 942; Along drain tubular axis 910 the leaf spring 960 of axial arrangement in the inside of flex section 910A, be assemblied in the joystick 970 of the rear end of drain tubular axis 910.

As shown in Figure 10, the flex section 910A of drain tubular axis 910 is the multi-cavity structure body forming tube chamber 911L ~ 916L in the respective inside of lumen 911 ~ 916, at tube chamber 911L inserted through the 1st behaviour's position 941, at tube chamber 912L inserted through the 2nd behaviour's position 942.

In Fig. 10, P1 is the central shaft (M comprising drain tubular axis 910 ₉₁₀), for behaviour's position 941 inserted through the central shaft (M of tube chamber 911L ₉₁₁), for behaviour's position 942 inserted through the central shaft (M of tube chamber 912L ₉₁₂) the 1st imaginary plane.

In addition, P2 is the plane orthogonal relative to the 1st imaginary plane P1, for comprising the central shaft (M of drain tubular axis 910 ₉₁₀) the 2nd imaginary plane, the 2nd imaginary plane P2 configures leaf spring 960.

In this electrode catheter 900, bend along the 1st direction (direction in Fig. 9 and Figure 10 shown in arrow A) to make the flex section 910A of drain tubular axis 910, need the knob 975 being assemblied in joystick 970 is rotated along A1 direction, tractive operation is carried out to the rear end of the 1st behaviour's position 941.

In addition, bend along the 2nd direction (direction in Fig. 9 and Figure 10 shown in arrow B) to make the flex section 910A of drain tubular axis 910, need the knob 975 being assemblied in joystick 970 is rotated along B1 direction, tractive operation is carried out to the rear end of the 2nd behaviour's position 942.

Patent documentation 1: if patent No. 3232308 publication

Patent documentation 2: JP 2006-61350 publication

In addition, be in make the fore-end of catheter have flexibility etc. viewpoint, as the behaviour's position for carrying out front end deflecting operation, preferably use by the line formed of twisting thread of the multiple bare wire doubling twistings will be made up of metal etc.

But, if carry out tractive operation to there being the rear end of the behaviour's position formed of twisting thread, then grasp position to rotate along the direction (circumference) of untiing its doubling twisting, its rotation torque (counter-torque) transmits to the front end of drain tubular axis via front termination electrode etc., produce at the flex section of drain tubular axis and reverse, its result, produces the problem that this flex section cannot be made to bend on same level.

Such as, when the behaviour's position (the 1st behaviour's position 941 and the 2nd behaviour's position 942) forming above-mentioned electrode catheter 900 by left-hand lay twist thread form, if the rear end of tractive operation the 1st behaviour position 941, then the front of the 1st behaviour's position 941 rotates towards the direction (direction (clockwise) in Figure 10 shown in arrow r1) of backtwisting.

Herein, because the front end of the 1st behaviour's position 941 is connected and fixed on front termination electrode 930, therefore the rotation torque forward end electrode 930 from the 1st behaviour's position 941 transmits, front termination electrode 930 and front termination electrode 930 the front of drain tubular axis 910 (flex section 910A) fixed with the central shaft (M of drain tubular axis 910 ₉₁₀) centered by, towards and the 1st direction (direction (clockwise) in Figure 10 shown in arrow R) of grasping the direction of rotation (backtwisting direction) of position 941 identical rotate.

On the other hand, the rear end side of flex section 910A is owing to being fixed on coil pipe etc. and cannot rotating, thus, produce reverse at the flex section 910A (between the front of the flex section 910A shown in the rear end side of the flex section 910A shown in Figure 10 and Figure 11) of drain tubular axis 910.In addition, under the state that the tractive by the 1st behaviour's position 941 operates in flex section 910A generation torsion, this flex section 910A cannot be made to bend along on same level.

In addition, as shown in figure 11, the front of flex section 910A is with the central shaft (M of drain tubular axis 910 ₉₁₀) centered by, along and the 1st direction of grasping the direction of rotation of position 941 identical rotate, therefore the flexure direction (yawing moment of electrode catheter 900) of the front of flex section 910A is not the 1st direction (direction in Figure 10 shown in arrow A) along the 1st imaginary plane P1, such as, for making the 1st direction with the central shaft (M of drain tubular axis 910 ₉₁₀) centered by towards and the 1st grasp the direction (arrow A in Figure 10 ' shown direction) that the identical direction of the direction of rotation of position 941 rotates about 45 °.

On the other hand, if the rear end of tractive operation the 2nd behaviour position 942, then the front of the 2nd behaviour's position 942 rotates along backtwisting direction (direction (clockwise) in Figure 10 shown in arrow r2), transmits and has the front of the drain tubular axis 910 (flex section 910A) of this rotation torque with the central shaft (M of drain tubular axis 910 ₉₁₀) centered by along and the 2nd direction (direction (clockwise) in Figure 10 shown in arrow R) of grasping the direction of rotation of position 942 identical rotate.Thus, produce identical torsion at flex section 910A, this flex section 910A therefore cannot be made to bend along on same level.

In addition, in this case, the front of flex section 910A also along and the 2nd direction of grasping the direction of rotation of position 942 identical rotate, therefore the flexure direction (yawing moment of electrode catheter 900) of the front of flex section 910A is not the 2nd direction (direction in Figure 10 shown in arrow B) along the 1st imaginary plane P1, such as, for making the 2nd direction with the central shaft (M of drain tubular axis 910 ₉₁₀) centered by towards and the 2nd grasp the identical direction of the direction of rotation of position 942 and rotate 45 ° of directions done (arrow B in Figure 10 ' shown direction).

When tractive operation behaviour's position, the above-mentioned phenomenon (problem) of flex section bending on same level (departing from from the 1st imaginary plane) cannot be made not produce when using and forming behaviour's position by single line, but producing because use forms behaviour's position by twisting thread, becoming new problem.

Summary of the invention

The present invention is formed in view of the foregoing.

Form although the object of the present invention is to provide one to grasp position by twisting thread, can make the shape of flex section in the plane that reality is identical, change the front end of (guaranteeing the flatness of change of shape) can the catheter of deflecting operation.

(1) front end of the present invention can the catheter of deflecting operation, and have drain tubular axis and behaviour's position, above-mentioned drain tubular axis front end has flex section (hereinafter referred to as " front end flex section ".), aforesaid operations line is formed by twisting thread, and for making the front end flex section of above-mentioned drain tubular axis bend, aforesaid operations line is by inserted through the inside in this drain tubular axis, and its rear end can for tractive operation,

At least flex section of above-mentioned drain tubular axis is multi-cavity structure body,

At least 1 in the multiple tube chambers being formed at above-mentioned front end flex section inserted through aforesaid operations line,

At above-mentioned front end flex section, across the central shaft of above-mentioned drain tubular axis opposed configure 2 tubuloses or shaft-like high rigid element, above-mentioned 2 high rigid elements have respective central shaft on the 3rd imaginary plane,

Above-mentioned 3rd imaginary plane is by by relative to the central shaft containing above-mentioned drain tubular axis and be inserted through the orthogonal plane of the 1st imaginary plane of central shaft of tube chamber of aforesaid operations line and be the 2nd imaginary plane of the central shaft containing above-mentioned drain tubular axis, rotate a certain angle (θ) towards the direction identical with above-mentioned twisted direction of twisting thread (wherein, 0 ° of < θ < 90 ° centered by the central shaft of above-mentioned catheter axle.) and formed.

Herein, " high rigid element " refers to the structure member of the drain tubular axis be made up of the material that rigidity (hardness and the modulus of elasticity in static bending) is higher than the other materials forming front end flexible portion.

In addition, " the twisted direction of twisting thread " is the twisted direction (direction of rotation of the bare wire of doubling twisting) of the front of behaviour's position.

Can the catheter of deflecting operation according to the front end of such structure, by by 2 high rigid elements on above-mentioned 3rd imaginary plane with respective central shaft across the central shaft of drain tubular axis opposed configure, thus become and there is the akin state of leaf spring with on the 3rd imaginary plane.

Thereby, it is possible to suppress the torsion along with the front end flex section of the rotation of twisting thread, its result, front end flex section can be suppressed towards the direction flexure departed from from the 1st imaginary plane.

(2) can in the catheter of deflecting operation in front end of the present invention, be preferably, across the central shaft of above-mentioned drain tubular axis opposed configure and there are 2 tube chambers of respective central shaft on above-mentioned 3rd imaginary plane, configure respectively and manage as in above-mentioned high rigid element.

(3) in the catheter of deflecting operation, can be preferably in the front end of above-mentioned (2), formed the stream (for front end can the fluid injection catheter of deflecting operation) of perfusion liquid by above-mentioned interior pipe.

(4) can in the catheter of deflecting operation in front end of the present invention, be preferably, the state configuration that above-mentioned multi-cavity structure body is fixed by adhesive resin with multiple lumen, as above-mentioned high rigid element, configure and form than above-mentioned adhesive resin and other lumens the lumen that the high material of resin forms by rigidity.

(5) be preferably, can the above-mentioned high rigid element of catheter of deflecting operation as forming front end of the present invention, shaft-like rigid body is embedded in the formation resin of above-mentioned drain tubular axis.

(6) in the catheter of deflecting operation, can be preferably in front end of the present invention, formed by above-mentioned 2nd imaginary plane and above-mentioned 3rd imaginary plane, above-mentioned angle (θ) is 45 ± 5 °.

(7) in the catheter of deflecting operation, can be preferably, above-mentioned 2nd imaginary plane of above-mentioned front end flex section configures leaf spring in front end of the present invention.

(8) can in the catheter of deflecting operation in front end of the present invention, be preferably, on in the multiple tube chambers being formed at above-mentioned flex section, across the central shaft of above-mentioned drain tubular axis opposed 2 tube chambers configuring respectively inserted through aforesaid operations line, being double fluid can the catheter of deflecting operation to the front end of type.

In this case, the twisted direction of 2 behaviour's positions is identical.

In the catheter of deflecting operation, the rear end of behaviour's position (the 1st behaviour's position or the 2nd behaviour's position) can be formed by tractive operation by twisting thread, the front end flex section of drain tubular axis can be made to bend along the 1st imaginary plane in front end of the present invention.

That is, can the catheter of deflecting operation according to front end of the present invention, although behaviour's position is formed by twisting thread, the shape of front end flex section can be made to change in the plane that reality is identical (guaranteeing the flatness of change of shape).

Accompanying drawing explanation

Fig. 1 is the summary front view of the electrode catheter of the 1st embodiment of the present invention.

The sectional elevation (the II-II sectional view of Fig. 1) that Fig. 2 is the front end flex section of the electrode catheter shown in Fig. 1.

The longitudinal section (the III-III sectional view of Fig. 2) that Fig. 3 is the fore-end of the electrode catheter shown in Fig. 1.

Fig. 4 is the summary front view of the electrode catheter of the 2nd embodiment of the present invention.

The sectional elevation (the V-V sectional view of Fig. 4) that Fig. 5 is the front end flex section of the electrode catheter shown in Fig. 4.

Fig. 6 is the sectional elevation of the front end flex section of the electrode catheter of the 3rd embodiment of the present invention.

Fig. 7 is the sectional elevation of the front end flex section of the electrode catheter of the 4th embodiment of the present invention.

Fig. 8 is the sectional elevation of the front end flex section of the electrode catheter of the 5th embodiment of the present invention.

Fig. 9 is can the front view of fore-end of electrode catheter of catheter of deflecting operation as front end.

The sectional elevation (the X-X sectional view of Fig. 1) that Figure 10 is the front end flex section of the electrode catheter shown in Fig. 9.

The sectional elevation (the XI-XI sectional view of Fig. 1) that Figure 11 is the front end flex section of the electrode catheter shown in Fig. 9.

Detailed description of the invention

< the 1st embodiment >

Front end of the present invention can deflecting operation catheter an embodiment electrode catheter 100 such as the arrhythmia of heart diagnosis or treatment in use.

The electrode catheter 100 of the present embodiment shown in Fig. 1 ~ Fig. 3 possesses: the drain tubular axis 10 with front end flex section 10A; Be connected to the pouring member 20 of the front end of this drain tubular axis 10; Be fixed on the front termination electrode 30 of the front end of this pouring member 20; Be assemblied in 3 ring electrodes 32 of the front end flex section 10A of drain tubular axis 10; 1st behaviour's position 41, it is made up of twist thread (left-hand lay), bend towards the 1st direction (direction in Fig. 1 and Fig. 2 shown in arrow A) for making the front end flex section 10A of drain tubular axis 10, by inserted through the inside in drain tubular axis 10, the front end of the 1st behaviour's position 41 is connected and fixed on pouring member 20, and rear end can for carrying out tractive operation; 2nd behaviour's position 42, it is made up of twist thread (left-hand lay), bend towards the 2nd direction (direction in Fig. 1 and Fig. 2 shown in arrow B) for making the front end flex section 10A of drain tubular axis 10, by inserted through the inside in drain tubular axis 10, the front end of the 2nd behaviour's position 42 is connected and fixed on pouring member 20, and rear end can for carrying out tractive operation; Along the axial arrangement of drain tubular axis 10 in the leaf spring 60 of the yaw of the inside of flex section 10A; Be assemblied in the joystick 70 of the rear end of drain tubular axis 10; The ascending pipe 80 of perfusion liquid.

The front end flex section 10A of drain tubular axis 10 is the multi-cavity structure body configured with the state be adhesively fixed by adhesive resin by 6 lumens 11 ~ 16 for the formation of tube chamber 11L ~ 16L.

At front end flex section 10A, across the central shaft (M of drain tubular axis 10 ₁₀) configuring the interior pipe 51 (high rigid element) of stream formation and the interior pipe 52 (high rigid element) of stream formation opposedly, the interior pipe 51 (high rigid element) that stream is formed has central shaft (M on the 3rd imaginary plane P3 ₅₁), the interior pipe 52 (high rigid element) that stream is formed has central shaft (M on the 3rd imaginary plane P3 ₅₂), the 3rd imaginary plane P3 is by by relative to the central shaft (M containing drain tubular axis 10 ₁₀), be inserted through the central shaft (M of tube chamber 11L of the 1st behaviour's position 41 ₁₁) and for the 2nd behaviour's position 42 inserted through the central shaft (M of tube chamber 12L ₁₂) the orthogonal plane of the 1st imaginary plane P1 and be the central shaft (M containing drain tubular axis 10 ₁₀) the 2nd imaginary plane P2, with the central shaft (M of drain tubular axis 10 ₁₀) centered by rotate a certain angle (θ) towards the direction identical with the twisted direction of twisting thread (θ=45 ° in present embodiment.) and formed.

The electrode catheter 100 of present embodiment possesses: drain tubular axis 10, be fixed on the pouring member 20 of the front end of drain tubular axis 10, be fixed on the front termination electrode 30 of the front end of pouring member 20, be assemblied in the ring electrode 32 of the front end flex section 10A of drain tubular axis 10, inserted through the 1st behaviour's position 41 and the 2nd behaviour's position 42 of the inside in drain tubular axis 10, be configured at the leaf spring 60 of the front end flex section 10A of drain tubular axis 10, be assemblied in the joystick 70 of the rear end of drain tubular axis 10, the ascending pipe 80 of perfusion liquid.

The front end area forming the drain tubular axis 10 of electrode catheter 100 becomes front end flex section 10A.

Herein, " front end flex section " refers to the fore-end of (bending) the drain tubular axis that can be bent by the rear end of tractive operation behaviour position (the 1st behaviour's position 41 or the 2nd behaviour's position 42).

The external diameter of drain tubular axis 10 is generally 0.6 ~ 3mm, is preferably 1.3 ~ 2.4mm.

The length of drain tubular axis 10 is generally 400 ~ 1500mm, is preferably 700 ~ 1200mm.

The length of front end flex section 10A such as not 30 ~ 300mm, is preferably 50 ~ 250mm.

At the rear end of drain tubular axis 10 assembling joystick 70.The adapter (diagram slightly) with multiple terminal is provided with, the wire (the wire 30L shown in Fig. 2 and wire 32L) of termination electrode 30 and 3 ring electrodes 32 before the terminal connection of adapter is connected in joystick 70.

In addition, joystick 70 is equipped with when the front end flex section 10A of bending drain tubular axis 10 for carrying out the knob 75 of tractive operation.

Ascending pipe 80 shown in Fig. 1 is connected to drain tubular axis 10 via the inside of joystick 70, via the liquid of this ascending pipe 80 to inside (inside of the interior pipe 51 and 52 that stream is formed) the supply perfusion of drain tubular axis 10.

Herein, as " liquid ", normal saline solution can be exemplified.

The front end flex section 10A of drain tubular axis 10 is made up of multi-cavity structure body.

As shown in Figure 2, front end flex section 10A comprises: inner side (core) portion 18 fixing lumen 11 ~ 16 by adhesive resin, outside (epidermis) portion 19 be made up of the resin of coated medial part 18, forms tube chamber 11L ~ 16L in the respective inside of the lumen 11 ~ 16 forming medial part 18.

D hardness (hardness measured by durometer (D type)) as the adhesive resin forming medial part 18 is such as less than 40, is preferably 25 ~ 35.

The modulus of elasticity in static bending (taking JISK7171 as the modulus of elasticity in static bending of locating tab assembly) forming the adhesive resin of medial part 18 is such as below 80MPa, is preferably 10 ~ 30MPa.

As the resin material forming medial part 18, nylon resin, polyether block amide resin, polyurethane resin, polyolefin-based resins etc. can be enumerated.

Be formed at the central shaft (M of tube chamber 11L and 12L across drain tubular axis 10 of front end flex section 10A ₁₀) configure, the central shaft (M of tube chamber 11L (lumen 11) opposedly ₁₁) and the central shaft (M of tube chamber 12L (lumen 12) ₁₂) be positioned on the 1st imaginary plane P1.

As the internal diameter of tube chamber 11L and 12L, be preferably 0.15 ~ 0.50mm, be more preferably 0.20 ~ 0.40mm.

As shown in Figure 2, in tube chamber 11L, position 41 is grasped inserted through the 1st for making the front end flex section 10A of drain tubular axis 10 bend along the 1st direction shown in arrow A.1st behaviour's position 41 with can the mode of movement vertically by inserted through the inside (the tube chamber 11L in the flex section 10A of front end) in drain tubular axis 10.

The front end of the 1st behaviour's position 41 is connected and fixed on pouring member 20.In addition, the rear end of the 1st behaviour's position 41 is connected to the knob 75 of joystick 70, thus can for carrying out tractive operation.

In addition, be inserted through for making the front end flex section 10A of drain tubular axis 10 along the 2nd behaviour's position 42 of the 2nd direction flexure shown in arrow B at tube chamber 12L.2nd behaviour's position 42 with can the mode of movement vertically inserted through the inside (the tube chamber 12L in the flex section 10A of front end) in drain tubular axis 10.

The front end of the 2nd behaviour's position 42 is connected and fixed on pouring member 20.In addition, the rear end of the 2nd behaviour's position 42 is connected to the knob 75 of joystick 70, thus can for carrying out tractive operation.

1st behaviour's position 41 and the 2nd behaviour's position 42 are made up of twisting thread of left-hand lay respectively.

Twist thread as the 1st behaviour's position 41 and the 2nd behaviour's position 42 by using, the front end flex section 10A of drain tubular axis 10 can be made to have flexibility, and workability when the respective rear end of the 1st behaviour's position 41 and the 2nd behaviour's position 42 is connected to the knob 75 of joystick 70 can be improved.

Position 41 and the 2nd behaviour's the twisting thread of position 42 is grasped, the metal bare wire that such as can be made up of rustless steel, Ni-Ti system superelastic alloy etc. by doubling twisting many and being formed as formation the 1st.

Grasp the external diameter of twisting thread of position 41 and the 2nd behaviour's position 42 as formation the 1st, be such as 0.10 ~ 0.30mm, be preferably 0.15 ~ 0.25mm, a preferred example is 0.20mm.

As the external diameter of the metal bare wire for the formation of the 1st behaviour's position 41 and the 2nd behaviour's position 42, such as, be 0.03 ~ 0.1mm, be preferably 0.04 ~ 0.07mm.As the number forming this bare wire of twisting thread, be such as 7 ~ 19, a preferred example is 7.

As shown in FIG. 2 and 3, in the inside of front end flex section 10A, the 2nd imaginary plane P2 is configured with the axially extended leaf spring 60 along drain tubular axis 10.

In the present embodiment, the 2nd imaginary plane P2 is the plane orthogonal relative to the 1st imaginary plane P1, and is the central shaft (M containing drain tubular axis 10 ₁₀) imaginary plane.

By at the inside of front end flex section 10A configuration leaf spring 60, front end flex section 10A is easily bent along the direction vertical with the plane (the 2nd imaginary plane P2) of leaf spring 60.

Be formed at the central shaft (M of tube chamber 13L and 14L across drain tubular axis 10 of front end flex section 10A ₁₀) configure, the central shaft (M13) of tube chamber 13L (lumen 13) and the central shaft (M14) of tube chamber 14L (lumen 14) are positioned on the 3rd imaginary plane P3. opposedly

In the present embodiment, the 3rd imaginary plane P3 is with the central shaft (M of drain tubular axis 10 by the 2nd imaginary plane P2 ₁₀) centered by grasp towards grasping position 41 and the 2nd with formation the 1st imaginary plane that identical direction (counter clockwise direction in Fig. 2), the twisted direction of twisting thread of position 42 rotates 45 °.

In addition, " the twisted direction of twisting thread " is by the twisted direction (direction of rotation of the bare wire of doubling twisting) of the front of this behaviour's position (the 1st behaviour's position 41 and the 2nd behaviour's position 42) formed of twisting thread, when the rear end of tractive operation behaviour position, be the direction contrary with the direction that the front of this behaviour's position rotates (backtwisting direction).

As the internal diameter of tube chamber 13L and 14L, be preferably 0.25 ~ 1.00mm, be more preferably 0.40 ~ 0.90mm.

As shown in Figure 2, tube chamber 13L inserted through pipe 51 in being formed as high rigid element stream (hereinafter referred to as " stream formation pipe 51 ".), its central shaft (M ₅₁) consistent with the central shaft (M13) of tube chamber 13L.

In addition, tube chamber 14L inserted through as high rigid element stream formed in pipe 52 (hereinafter referred to as " stream formation pipe 52 ".), its central shaft (M ₅₂) consistent with the central shaft (M14) of tube chamber 14L.

At the liquid (normal saline solution) that stream formation is poured into the internal circulation of pipe 51 and 52.

By making liquid circulate in the inside of stream formation pipe 51 and 52, the sealing (preventing the effect that liquid spills from tube chamber) of perfusion liquid can be improved.

As the constituent material of high rigid element that is stream formation pipe 51 and 52, the resin materials such as polyimides, polyether-ether-ketone (PEEK) and nylon 11 can be used, also can use the metal material of rustless steel and Ni-Ti system superelastic alloy etc.

As the D hardness forming the stream formation resin of pipe 51 and 52, such as, be more than 72, be preferably 77 ~ 95.

As the modulus of elasticity in static bending forming the stream formation resin of pipe 51 and 52, such as, be 1,500 ~ 19,000MPa, be preferably 2,000 ~ 7,000MPa.

As the internal diameter of stream formation with pipe 51 and 52, be preferably 0.20 ~ 0.95mm, be more preferably 0.30 ~ 0.80mm.

As the wall thickness of stream formation with pipe 51 and 52, be generally 10 ~ 100 μm, be preferably 20 ~ 80 μm.

Respective central shaft (M ₅₁) and (M ₅₂) lay respectively at the central shaft (M of the stream formation pipe 51 and 52 on the 3rd imaginary plane P3 across drain tubular axis 10 ₁₀) configure, the front end flex section 10A of drain tubular axis 10 is formed as there is the akin mode of leaf spring with on the 3rd imaginary plane P3 thus. opposedly

Namely, resistance when front end flex section 10A is bent along the 3rd imaginary plane P3 is obviously greater than resistance when this front end flex section 10A is bent along the direction perpendicular to the 3rd imaginary plane P3, front end flex section 10A not easily bends along the 3rd imaginary plane P3, easily bends along the direction vertical with the 3rd imaginary plane P3.

Be formed at the central shaft (M of tube chamber 15L and 16L across drain tubular axis 10 of front end flex section 10A ₁₀) configure, the central shaft (M15) of tube chamber 15L (lumen 15) and the central shaft (M16) of tube chamber 16L (lumen 16) are positioned on the 4th imaginary plane P4. opposedly

In the present embodiment, the 4th imaginary plane P4 be by by the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 10 ₁₀) centered by, towards and formation the 1st grasp position 41 and the 2nd and grasp the imaginary plane that contrary direction (clockwise direction in Fig. 2), the twisted direction (the twisted direction of front) of twisting thread of position 42 rotates 45 °.

The internal diameter of tube chamber 15L and 16L is identical with the internal diameter of tube chamber 13L and 14L.

As shown in Figure 2, inserted through the wire 32L of the ring electrode 32 shown in Fig. 1 in tube chamber 15L, at the wire 30L of tube chamber 16L inserted through front termination electrode 30.

The lumen 11 ~ 16 forming tube chamber 11L ~ 16L is made up of resin.

As the resin forming lumen 11 ~ 16, preferably there is the rigidity (the D hardness modulus of elasticity in static bending) equal or higher with the adhesive resin forming medial part 18.

As the D hardness of the resin of formation lumen 11 ~ 16, such as 80 is following, is preferably 50 ~ 75.

As the modulus of elasticity in static bending of the resin of formation lumen 11 ~ 16, such as, be 15 ~ 1,000MPa, be preferably 100 ~ 800MPa.

As the wall thickness of lumen 11 ~ 16, be generally 10 ~ 50 μm, be preferably 20 ~ 40 μm.

As the resin material forming lumen 11 ~ 16, as long as possess above-mentioned stiffness conditions and can be shaped with tubulose, be not particularly limited, such as, can be the nylon resin of fluororesin, nylon 11/nylon 12 etc., polyurethane resin, vistanex etc., but for the viewpoint of lubricity (behaviour's position etc. inserted through the mobile easiness of parts) optimizing (tube chamber) in pipe, be preferably made up of fluororesin.

Specifically, politef (PTFE), tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer (PFA), perfluoroethylene-propylene copolymer (FEP), ethylene-tetrafluoroethylene copolymer (ETFE) etc. can be illustrated.

The lateral part 19 of front end flex section 10A is made up of the resin material of coated medial part 18.As shown in Figure 3, this lateral part 19 forms front end flex section 10A, and is comparing flex section 10A side rearward, front end, forms drain tubular axis 10 (duct member).

Herein, as the D hardness of the resin of the lateral part 19 of formation front end flex section 10A, such as, be 35 ~ 63.

In addition, lateral part 19 (structure division of front end flex section 10A and the part than front end flex section 10A side rearward) can be made up of the pipe of physical property identical vertically, but is preferably rigidity (hardness) and raises towards rear end side segmenting.

As the wall thickness of lateral part 19, be preferably about 3 ~ 15% of the external diameter of drain tubular axis 10.

As forming the resin material of lateral part 19, can moment polyamide thermoplastic based elastomers, but be preferably polyether block amide copolymer.

As shown in Figure 3, the part of the ratio front end flex section 10A of drain tubular axis 10 side is rearward made up of the duct member (the single-lumen structure that the duct member being equivalent to lateral part 19 is formed) of hollow.

In addition, coil pipe 54 is had in the mounted inside comparing the front end flex section 10A part of side rearward.

This coil pipe 54, by the wire coil coiled of the section straight angle or circle is formed pipe, bears the counteracting force of the traction force acting on the 1st behaviour's position 41 or the 2nd behaviour's position 42.

Thus, when acting on traction force to the 1st behaviour's position 41 or the 2nd behaviour's position 42, part (part than the front end flex section 10A side rearward) flexure of the drain tubular axis 10 assembling this coil pipe 54 can be suppressed.

Pouring member 20 is connected and fixed in the front end of drain tubular axis 10.

Spray multiple (such as 8) perfusion opening (illustrating summary) of (perfusion) liquid of supplying from drain tubular axis 10 (inside of stream is formationed pipe 51 and 52) along the surface that angularly compartment of terrain is configured for forward end electrode 30, periphery of pouring member 20 at pouring member 20.

Termination electrode 30 before the front end of pouring member 20 is connected and fixed.

In addition, ring electrode 32 is equipped with at the front end flex section 10A of drain tubular axis 10.

As the fixing means of front termination electrode 30 and ring electrode 32, be not particularly limited, such as, can enumerate the method for bonding etc.

Front termination electrode 30 and ring electrode 32 are such as made up of the metal that the electrical conductance such as aluminum, copper, rustless steel, gold, platinum are good.In addition, in order to there is good radiography relative to X-ray, be preferably made up of platinum etc.

As the external diameter of front termination electrode 30 and ring electrode 32, thing is particularly limited to, but preferably and the external diameter of drain tubular axis 10 be equal extent.

By making the knob 75 of the joystick 70 of the electrode catheter 100 of formation present embodiment rotate towards the A1 direction shown in Fig. 1, carry out the tractive operation to the 1st behaviour's position 41.

When the tractive operation of the 1st behaviour's position 41 (during the deflecting operation of front end), rotated towards the backtwisting direction (direction (clockwise) shown in the arrow r1 in Fig. 2) of twisting thread by the front of the 1st behaviour's position 41 formed of twisting thread of left-hand lay.

Herein, because the front end of the 1st behaviour's position 41 is connected and fixed on pouring member 20, the rotation torque therefore from the 1st behaviour's position 41 transmits to pouring member 20.

Therefore, suppose when high rigid element not respectively inserted through stream formation pipe in tube chamber 13L and 14L of front end flex section 10A, pouring member 20 and pouring member 20 the front of drain tubular axis 10 (front end flex section 10A) fixed by with the central shaft (M of drain tubular axis 10 ₁₀) centered by, towards and the 1st direction (direction (clockwise) in Fig. 2 shown in arrow R) of grasping the direction of rotation of position 41 identical rotate.On the other hand, the rear end side of front end flex section 10A cannot rotate freely as front, and thus, front end flex section 10A reverses along the direction shown in arrow R, and such as bends towards arrow A in same figure ' shown direction.

But, in the electrode catheter 100 of present embodiment, by tube chamber 13L and 14L respectively inserted through the stream formation pipe 51 and 52 as high rigid element (across central shaft (M ₁₀) be configured on the 3rd imaginary plane P3) opposedly, thus formed and on the 3rd imaginary plane P3, there is the akin mode of leaf spring (in such mode, when use forms the 1st behaviour's position by single line, front end flex section 10A counterclockwise reverses, and such as along arrow A in Fig. 2 " shown in direction flexure), therefore when the tractive operation of the 1st behaviour's position 41, can suppress and stop front end flex section 10A to reverse along the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 10A reversed along the 1st imaginary plane P1 towards the 1st direction flexure (making front end deflect) shown in arrow A.

In addition, by making the knob 75 of the joystick 70 of the electrode catheter 100 of formation present embodiment rotate along the B1 direction shown in Fig. 1, carry out the tractive operation to the 2nd behaviour's position 42.

When the tractive operation of the 2nd behaviour's position 42, rotated towards the backtwisting direction (direction (clockwise) shown in the arrow r2 in Fig. 2) of twisting thread by the front of the 2nd behaviour's position 42 formed of twisting thread of left-hand lay.

Herein, because the front end of the 2nd behaviour's position 42 is connected and fixed on pouring member 20, the rotation torque therefore from the 2nd behaviour's position 42 transmits to pouring member 20.

Therefore, suppose when high rigid element not respectively inserted through stream formation pipe in tube chamber 13L and 14L of front end flex section 10A, pouring member 20 and pouring member 20 the front of drain tubular axis 10 (front end flex section 10A) fixed by with the central shaft (M of drain tubular axis 10 ₁₀) centered by, towards and the 2nd direction (direction (clockwise) in Fig. 2 shown in arrow R) of grasping the direction of rotation of position 42 identical rotate.On the other hand, the rear end side of front end flex section 10A cannot rotate freely as front, and thus, front end flex section 10A reverses along the direction shown in arrow R, and such as bends towards arrow B in same figure ' shown direction.

But, in the electrode catheter 100 of present embodiment, by tube chamber 13L and 14L respectively inserted through the stream formation pipe 51 and 52 as high rigid element (across central shaft (M ₁₀) be configured on the 3rd imaginary plane P3) opposedly, thus formed and on the 3rd imaginary plane P3, there is the akin mode of leaf spring (in such mode, when use forms the 2nd behaviour's position by single line, front end flex section 10A counterclockwise reverses, and such as along arrow B in Fig. 2 " shown in direction flexure), therefore when the tractive operation of the 2nd behaviour's position 42, can suppress and stop front end flex section 10A to reverse along the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 10A reversed along the 1st imaginary plane P1 towards the 2nd direction flexure (making front end deflect) shown in arrow B.

In addition, by making joystick 70 pivot, can be inserted under endoceliac state, free setting relative to the 1st direction of electrode catheter 100 and the 2nd direction towards.

Electrode catheter 100 according to the present embodiment, although the 1st behaviour's position 41 and the 2nd behaviour's position 42 are formed by twisting thread, but can operate the 1st rear end of grasping position 41 or the 2nd behaviour's position 42 by tractive makes the shape of front end flex section 10A in the upper change of the plane (the 1st imaginary plane P1) that reality is identical, reliably bends along the direction (along the 1st imaginary plane P1 towards the 1st direction or the 2nd direction) based on operator's will.

< the 2nd embodiment >

The electrode catheter 200 of the present embodiment shown in Fig. 4 and Fig. 5 possesses: the drain tubular axis 210 with front end flex section 210A; Be fixed on the front termination electrode 230 of the front end of this drain tubular axis 210; Be assemblied in 3 ring electrodes 232 of the front end flex section 210A of drain tubular axis 210; 1st behaviour's position 241, it is made up of twist thread (left-hand lay), bend towards the 1st direction (direction in Fig. 4 and Fig. 5 shown in arrow A) for making the front end flex section 210A of drain tubular axis 210, by inserted through the inside in drain tubular axis 210, the front end of the 1st behaviour's position 241 is connected and fixed on front termination electrode 230, and rear end can for carrying out tractive operation; 2nd behaviour's position 242, it is made up of twist thread (left-hand lay), bend towards the 2nd direction (direction in Fig. 4 and Fig. 5 shown in arrow B) for making the front end flex section 210A of drain tubular axis 210, by inserted through the inside in drain tubular axis 210, the front end of the 2nd behaviour's position 242 is connected and fixed on front termination electrode 230, and rear end can for carrying out tractive operation; Along the axial arrangement of drain tubular axis 210 in the leaf spring 260 of the inside of flex section 210A; Be assemblied in the joystick 270 of the rear end of drain tubular axis 210.

The front end flex section 210A of drain tubular axis 210 is the multi-cavity structure body configured with the state of being fixed by adhesive resin by 6 lumens 211 ~ 216 for the formation of tube chamber 211L ~ 216L.

At front end flex section 210A, across the central shaft (M of drain tubular axis 210 ₂₁₀) configuring high rigidity lumen 213 (high rigid element) and high rigidity lumen 214 (high rigid element) opposedly, high rigidity lumen 213 (high rigid element) has central shaft (M on the 3rd imaginary plane P3 ₂₁₃), high rigidity lumen 214 (high rigid element) has central shaft (M on the 3rd imaginary plane P3 ₂₁₄), the 3rd imaginary plane P3 is by by relative to the central shaft (M containing drain tubular axis 210 ₂₁₀), for the 1st behaviour's position 241 inserted through the central shaft (M of tube chamber 211L ₂₁₁) and for the 2nd behaviour's position 242 inserted through the central shaft (M of tube chamber 212L ₂₁₂) the orthogonal plane of the 1st imaginary plane P1 that is central shaft (M containing drain tubular axis 210 ₂₁₀) the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 210 ₂₁₀) centered by rotate a certain angle (θ) towards the direction identical with the twisted direction of twisting thread (θ=45 ° in present embodiment.) and formed.

The electrode catheter 200 of present embodiment possesses: drain tubular axis 210, be fixed on the front end of drain tubular axis 210 front termination electrode 230, be assemblied in the front end flex section 210A of drain tubular axis 210 ring electrode 232, inserted through the inside in drain tubular axis 210 the 1st behaviour's position 241 and the 2nd behaviour's position 242, be configured at the leaf spring 260 of the front end flex section 210A of drain tubular axis 210, be assemblied in the joystick 270 of the rear end of drain tubular axis 210.

The front end area forming the drain tubular axis 210 of electrode catheter 200 is front end flex section 210A.

At the rear end of drain tubular axis 210 assembling joystick 270.

Joystick 270 is the structure identical with the joystick 70 of the electrode catheter 100 of formation the 1st embodiment, the knob 275 of the tractive operation when joystick 270 is equipped with for carrying out making the front end flex section 210A of drain tubular axis 210 to bend.

The front end flex section 210A of drain tubular axis 210 is made up of multi-cavity structure body.

As shown in Figure 5, front end flex section 210A comprises: inner side (core) portion 218 fixing lumen 211 ~ 216 by adhesive resin, outside (epidermis) portion 219 be made up of the resin of coated medial part 218, forms tube chamber 211L ~ 216L in the respective inside of the lumen 211 ~ 216 forming medial part 218.

As the physical property of resin and the kind that form medial part 218 and lateral part 219, with the medial part 18 of the front end flex section 10A of formation the 1st embodiment and the resin-phase of lateral part 19 with.

Be formed at the central shaft (M of tube chamber 211L and 212L across drain tubular axis 210 of front end flex section 210A ₂₁₀) configure, the central shaft (M of tube chamber 211L (lumen 211) opposedly ₂₁₁) and the central shaft (M of tube chamber 212L (lumen 212) ₂₁₂) be positioned on the 1st imaginary plane P1.

As shown in Figure 5, in tube chamber 211L, position 241 is grasped inserted through the 1st for making the front end flex section 210A of drain tubular axis 210 bend towards the 1st direction shown in arrow A.In addition, in tube chamber 212L, position 242 is grasped inserted through the 2nd for making the front end flex section 210A of drain tubular axis 210 bend towards the 2nd direction shown in arrow B.

In addition, in the inside of front end flex section 210A, the 2nd imaginary plane P2 configures the axially extended leaf spring 260 along drain tubular axis 210.

In the present embodiment, the 2nd imaginary plane P2 is the plane orthogonal relative to the 1st imaginary plane P1, is the central shaft (M containing drain tubular axis 210 ₂₁₀) imaginary plane.

1st behaviour's position 241 and the 2nd behaviour's position 242 are formed by grasping with the 1st of the 1st embodiment twist thread (left-hand lay) that position 41 and the 2nd grasps position 42 identical.The front end of the 1st behaviour's position 241 and the 2nd behaviour's position 242 is connected and fixed on front termination electrode 230 respectively, and their rear end is connected to the knob 275 of joystick 270, can carry out tractive operation thus.

Be formed at the central shaft (M of tube chamber 213L and 214L across drain tubular axis 210 of front end flex section 210A ₂₁₀) configure, the central shaft (M of tube chamber 213L (high rigidity lumen 213) opposedly ₂₁₃) and the central shaft (M of tube chamber 214L (high rigidity lumen 214) ₂₁₄) be positioned on the 3rd imaginary plane P3.This

In embodiments, the 3rd imaginary plane P3 be by by the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 210 ₂₁₀) centered by, towards and formation the 1st grasp position 241 and the 2nd and grasp the imaginary plane that identical direction (counter clockwise direction in Fig. 5), the twisted direction (the twisted direction of front) of twisting thread of position 242 rotates 45 °.

Be formed at the central shaft (M of tube chamber 215L and 216L across drain tubular axis 210 of front end flex section 210A ₂₁₀) configure, the central shaft (M215) of tube chamber 215L (lumen 215) and the central shaft (M216) of tube chamber 216L (lumen 216) are positioned on the 4th imaginary plane P4. opposedly

In the present embodiment, the 4th imaginary plane P4 is with the central shaft (M of drain tubular axis 210 by the 2nd imaginary plane P2 ₂₁₀) centered by, towards and formation the 1st grasp position 241 and the 2nd and grasp the imaginary plane that contrary direction (clockwise direction in Fig. 5), the twisted direction (the twisted direction of front) of twisting thread of position 242 rotates 45 °.

As shown in Figure 5, inserted through the wire 232L of the ring electrode 232 shown in Fig. 1 in tube chamber 215L, inserted through the wire 230L of front termination electrode 230 in tube chamber 216L.

The lumen 211 ~ 216 forming tube chamber 211L ~ 216L is made up of resin.

As forming the resin of lumen 211,212,215 and 216, preferably have with the adhesive resin forming medial part 218 on an equal basis or larger rigidity.

As the D hardness of the resin of formation lumen 211,212,215 and 216, such as, be less than 80, be preferably 50 ~ 75.

As the modulus of elasticity in static bending of the resin of formation lumen 211,212,215 and 216, such as, be 15 ~ 1,000MPa, be preferably 100 ~ 800MPa.

As the resin material forming lumen 211,212,215 and 216, the identical resin with the resin of the lumen 11 ~ 16 forming the 1st embodiment can be enumerated.

The high rigidity lumen 213 forming tube chamber 213L and the high rigidity lumen 214 forming tube chamber 214L be by rigidity specific viscosity mixture resin and the high rigid element forming the high resin formation of the resin of other lumens (lumen 211,212,215 and 216).

As the resin material forming high rigidity lumen 213 and 214, polyimides, polyether-ether-ketone (PEEK) and nylon 11 etc. can be enumerated.

The D hardness forming the resin of the D hardness ratio formation lumen 211,212,215 and 216 of the resin of high rigidity lumen 213 and 214 is high, such as, be more than 72, be preferably 77 ~ 95.

As the modulus of elasticity in static bending of the resin of the high rigidity lumen 213 and 214 of formation, such as, be 1,500 ~ 19,000MPa, be preferably 2,000 ~ 7,000MPa.

As the wall thickness of lumen 211 ~ 216, be generally 20 ~ 60 μm, be preferably 30 ~ 50 μm.

By by respective central shaft (M ₂₁₃) and (M ₂₁₄) be positioned at the central shaft (M of the high rigidity lumen 213 and 214 on the 3rd imaginary plane P3 across drain tubular axis 210 ₂₁₀) configure, the front end flex section 210A of drain tubular axis 210 is become and there is the akin mode of leaf spring with on the 3rd imaginary plane P3. opposedly

Namely, resistance when front end flex section 210A being bent along the 3rd imaginary plane P3 is obviously greater than resistance when this front end flex section 210A is bent along the direction vertical with the 3rd imaginary plane P3, front end flex section 210A not easily bends along the 3rd imaginary plane P3, easily bends along the direction vertical with the 3rd imaginary plane P3.

In the electrode catheter 200 of present embodiment, the part of the ratio front end flex section 210A of drain tubular axis 210 side rearward, identical with the electrode catheter 100 of the 1st embodiment, be made up of the duct member (the single-lumen structure that the duct member suitable with lateral part 219 is formed) of hollow.In addition, at the mounted inside coil pipe than the front end flex section 210A part of side rearward.

By making the knob 275 of the joystick 270 of the electrode catheter 200 of formation present embodiment rotate along the A1 direction shown in Fig. 4, carry out the tractive operation of the 1st behaviour's position 241.When the tractive operation of the 1st behaviour's position 241, rotated towards the backtwisting direction of twisting thread () by the front of the 1st behaviour's position 241 formed of twisting thread of left-hand lay in Fig. 5 clockwise.

Herein, because the front end of the 1st behaviour's position 241 is connected and fixed on front termination electrode 230, the rotation torque forward end electrode 230 therefore from the 1st behaviour's position 241 transmits.

Therefore, the lumen supposing to be formed tube chamber 213L and 214L is not high rigid element, and when having with the rigidity that lumen 215 and 216 is equal, front termination electrode 230 and front termination electrode 230 the front of drain tubular axis 210 (front end flex section 210A) fixed by with the central shaft (M of drain tubular axis 210 ₂₁₀) centered by, towards and the 1st direction (direction (clockwise) in Fig. 5 shown in arrow R) of grasping the direction of rotation of position 241 identical rotate.On the other hand, the rear end side of front end flex section 210A cannot rotate freely as front, and thus, front end flex section 210A reverses along the direction shown in arrow R, and such as bends towards arrow A in same figure ' shown direction.

But, in the electrode catheter 200 of present embodiment, tube chamber 213L and 214L is formed by high rigidity lumen 213 and 214 (high rigid element) respectively, be formed as and on the 3rd imaginary plane P3, there is the akin mode of leaf spring (in such mode, when use forms the 1st behaviour's position by single line, front end flex section 210A counterclockwise reverses, and such as towards arrow A in Fig. 5 " shown in direction flexure), therefore when the tractive operation of the 1st behaviour's position 241, can suppress and stop front end flex section 210A to reverse towards the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 210A reversed along the 1st imaginary plane P1 towards the 1st direction flexure (making front end deflect) shown in arrow A.

In addition, by making the knob 275 of the joystick 270 of the electrode catheter 200 of formation present embodiment rotate along the B1 direction shown in Fig. 4, carry out the tractive operation to the 2nd behaviour's position 242.

When the tractive operation of the 2nd behaviour's position 242, rotated towards the backtwisting direction of twisting thread () by the front of the 2nd behaviour's position 242 formed of twisting thread of left-hand lay in Fig. 5 clockwise.

Herein, because the front end of the 2nd behaviour's position 242 is connected and fixed on front termination electrode 230, the rotation torque therefore from the 2nd behaviour's position 242 is transmitted by forward end electrode 230.

Therefore, suppose when the lumen forming tube chamber 213L and 214L not for high rigid element and have with the rigidity that lumen 215 and 216 is equal when, front termination electrode 230 and front termination electrode 230 the front of drain tubular axis 210 (front end flex section 210A) fixed by with the central shaft (M of drain tubular axis 210 ₂₁₀) centered by, towards and the 2nd direction (direction (clockwise) in Fig. 5 shown in arrow R) of grasping the direction of rotation of position 242 identical rotate.

On the other hand, the rear end side of front end flex section 210A cannot rotate freely as front, and thus, front end flex section 210A reverses towards the direction shown in arrow R, and such as bends towards arrow B in same figure ' shown direction.

But, in the electrode catheter 200 of present embodiment, tube chamber 213L and 214L is formed by high rigidity lumen 213 and 214 (high rigid element) respectively, become and on the 3rd imaginary plane P3, there is the akin mode of leaf spring (in such mode, when use forms the 2nd behaviour's position by single line, front end flex section 210A counterclockwise reverses, and such as towards arrow B in Fig. 5 " shown in direction flexure), therefore when the tractive operation of the 2nd behaviour's position 242, can suppress and stop front end flex section 210A to reverse towards the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 210A reversed along the 1st imaginary plane P1 towards the 2nd direction flexure (making front end deflect) shown in arrow B.

Electrode catheter 200 according to the present embodiment, although the 1st behaviour's position 241 and the 2nd behaviour's position 242 are formed by twisting thread, but can operate the 1st rear end of grasping position 241 or the 2nd behaviour's position 242 by tractive makes the shape of front end flex section 210A in the upper change of the plane (the 1st imaginary plane P1) that reality is identical, reliably bends along the direction (the 1st direction or the 2nd direction) based on operator's will.

< the 3rd embodiment >

The electrode catheter 300 of the present embodiment of the cross section shape of front end shown in Figure 6 flex section possesses: the drain tubular axis 310 with front end flex section 310A; Be fixed on the front termination electrode of the front end of this drain tubular axis 310; Be assemblied in 3 ring electrodes of the front end flex section 310A of drain tubular axis 310; 1st behaviour's position 341, it is made up of twist thread (left-hand lay), bend towards the 1st direction (direction in Fig. 6 shown in arrow A) for making the front end flex section 310A of drain tubular axis 310, by inserted through the inside in drain tubular axis 310, the front end of the 1st behaviour's position 341 is connected and fixed on front termination electrode, and rear end can for carrying out tractive operation; 2nd behaviour's position 342, it is made up of twist thread (left-hand lay), bend towards the 2nd direction (direction in Fig. 6 shown in arrow B) for making the front end flex section 310A of drain tubular axis 310, by inserted through the inside in drain tubular axis 310, the front end of the 2nd behaviour's position 342 is connected and fixed on front termination electrode, and rear end can for carrying out tractive operation; Along the axial arrangement of drain tubular axis 310 in the leaf spring 360 of the inside of flex section 310A; Be assemblied in the joystick of the rear end of drain tubular axis 310.

The front end flex section 310A of drain tubular axis 310 is the multi-cavity structure body configured with the state fixing by adhesive resin 318 by 6 lumens 311 ~ 316 for the formation of tube chamber 311L ~ 316L.

At front end flex section 310A, shaft-like rigid body 355 (high rigid element) and shaft-like rigid body 356 (high rigid element) to be embedded in the state of the formation resin (adhesive resin 318) of drain tubular axis 310, across the central shaft (M of drain tubular axis 310 ₃₁₀) configure, shaft-like rigid body 355 (high rigid element) has central shaft (M on the 3rd imaginary plane P3. opposedly ₃₅₅), shaft-like rigid body 356 (high rigid element) has central shaft (M on the 3rd imaginary plane P3 ₃₅₆).3rd imaginary plane P3 is by by relative to the central shaft (M containing drain tubular axis 310 ₃₁₀), for the 1st behaviour's position 341 inserted through the central shaft (M of tube chamber 311L ₃₁₁) and for the 2nd behaviour's position 342 inserted through the central shaft (M of tube chamber 312L ₃₁₂) the orthogonal plane of the 1st imaginary plane P1 that is the central shaft (M of drain tubular axis 310 ₃₁₀) the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 310 ₃₁₀) centered by rotate a certain angle (θ) towards the direction identical with the twisted direction of twisting thread (θ=45 ° in present embodiment.) and formed.

The electrode catheter 300 of present embodiment possesses: drain tubular axis 310, be fixed on the front end of drain tubular axis 310 front termination electrode, be assemblied in the front end flex section 310A of drain tubular axis 310 ring electrode, inserted through the inside in drain tubular axis 310 the 1st behaviour's position 341 and the 2nd behaviour's position 342, be configured at the leaf spring 360 of the front end flex section 310A of drain tubular axis 310, be assemblied in the joystick of the rear end of drain tubular axis 310.

In addition, the face shaping of the electrode catheter 300 of present embodiment is identical with the electrode catheter 200 of the 2nd embodiment shown in Fig. 4.

In addition, form the front termination electrode of electrode catheter 300, ring electrode and joystick be with in the 2nd embodiment before the identical structure of termination electrode 230, ring electrode 232 and joystick 270.

The front end area forming the drain tubular axis 310 of electrode catheter 300 is front end flex section 310A.

The front end flex section 310A of drain tubular axis 310 is the multi-cavity structure body that lumen 311 ~ 316 configures with the state fixing by adhesive resin 318, forms tube chamber 311L ~ 316L in the respective inside of these lumens 311 ~ 316.

Be formed at the central shaft (M of tube chamber 311L and 312L across drain tubular axis 310 of front end flex section 310A ₃₁₀) configure, the central shaft (M of tube chamber 311L (lumen 311) opposedly ₃₁₁) and the central shaft (M of tube chamber 312L (lumen 312) ₃₁₂) be positioned on the 1st imaginary plane P1.

Inserted through the 1st behaviour's position 341 for making the front end flex section 310A of drain tubular axis 310 bend towards the 1st direction shown in arrow A in tube chamber 311L.In addition, in tube chamber 312L, position 342 is grasped inserted through the 2nd for making the front end flex section 310A of drain tubular axis 310 bend towards the 2nd direction shown in arrow B.

In addition, in the inside of front end flex section 310A, the 2nd imaginary plane P2 configures the axially extended leaf spring 360 along drain tubular axis 310.

In the present embodiment, the 2nd imaginary plane P2 is the plane orthogonal relative to the 1st imaginary plane P1, is the central shaft (M containing drain tubular axis 310 ₃₁₀) imaginary plane.

1st behaviour's position 341 and the 2nd behaviour position 342 and the 1st in the 1st embodiment are grasped position 41 and the 2nd and are grasped that position 42 is identical to be made up of twist thread (left-hand lay).1st behaviour position 341 and the 2nd behaviour position 342 front end be connected and fixed on front termination electrode respectively, respective rear end respectively by be connected to joystick knob and can for carrying out tractive operation.

Be formed at the central shaft (M of tube chamber 313L and 314L across drain tubular axis 310 of front end flex section 310A ₃₁₀) configure, the central shaft (M of tube chamber 313L (lumen 313) opposedly ₃₁₃) and the central shaft (M of tube chamber 314L (lumen 314) ₃₁₄) be positioned on the 3rd imaginary plane P3.

In the present embodiment, the 3rd imaginary plane P3 is by making the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 310 ₃₁₀) centered by, towards and formation the 1st grasp the imaginary plane that twisted direction (the twisted direction of the front) equidirectional (in Fig. 6 counter clockwise direction) of twisting thread that position 341 and the 2nd grasps position 342 rotates 45 °.

Be formed at the central shaft (M of tube chamber 315L and 316L across drain tubular axis 310 of front end flex section 310A ₃₁₀) configure, the central shaft (M315) of tube chamber 315L (lumen 315) and the central shaft (M316) of tube chamber 316L (lumen 316) are positioned on the 4th imaginary plane P4. opposedly

In the present embodiment, the 4th imaginary plane P4 is with the central shaft (M of drain tubular axis 310 by the 2nd imaginary plane P2 ₃₁₀) centered by, towards and formation the 1st grasp position 241 and the 2nd and grasps the imaginary plane that contrary direction, the twisted direction (the twisted direction of front) of twisting thread of position 242 (in Fig. 6 clockwise direction) rotates 45 °.

As shown in Figure 6, inserted through the wire 332L of the ring electrode shown in Fig. 1 in tube chamber 315L, inserted through the wire 330L of front termination electrode in tube chamber 316L.

The lumen 311 ~ 316 forming tube chamber 311L ~ 316L is made up of resin.

As forming the resin of lumen 311 ~ 316, preferably have with adhesive resin 318 on an equal basis or larger rigidity.

As the D hardness of the resin of formation lumen 311 ~ 316, such as, be less than 80, be preferably 50 ~ 75.

As the modulus of elasticity in static bending of the resin of formation lumen 311 ~ 316, such as, be 15 ~ 1,000MPa, be preferably 100 ~ 800MPa.

As the resin material forming lumen 311 ~ 316, the resin same with lumen 11 ~ 16 resin-phase formed in the 1st embodiment can be enumerated.

3rd imaginary plane P3 has central shaft (M at the outer circumferential side of tube chamber 313L ₃₅₅) shaft-like rigid body 355 (high rigid element) with on the 3rd imaginary plane P3, at the outer circumferential side of tube chamber 314L, there is central shaft (M ₃₅₆) shaft-like rigid body 356 (high rigid element), to be embedded in the central shaft (M of state across drain tubular axis 310 of the formation resin (adhesive resin 318) of drain tubular axis 310 ₃₁₀) be configured in the front end flex section 310A of drain tubular axis 310 opposedly.

Herein, rigid body 355 and 356 is made up of pole spring, and pole spring is made up of the metal material of the resin materials such as polyimides, polyether-ether-ketone and nylon 11 and rustless steel and Ni-Ti system superelastic alloy etc.

Respective central shaft (M ₃₅₅) and (M ₃₅₆) be positioned at the central shaft (M of the rigid body 355 and 356 on the 3rd imaginary plane P3 across drain tubular axis 310 ₃₁₀) joined by opposed, the front end flex section 310A of drain tubular axis 310 becomes and there is the akin mode of leaf spring with on the 3rd imaginary plane P3 thus.

Namely, resistance when front end flex section 310A is bent along the 3rd imaginary plane P3 is obviously greater than resistance when this makes front end flex section 310A bend along the direction vertical with the 3rd imaginary plane P3, front end flex section 310A not easily bends along the 3rd imaginary plane P3, easily bends along the 4th imaginary plane P4 towards the direction vertical with the 3rd imaginary plane P3.

When the tractive operation of the 1st behaviour's position 341 forming electrode catheter 300, rotated towards the backtwisting direction of twisting thread () by the front of the 1st behaviour's position 341 formed of twisting thread of left-hand lay in Fig. 6 clockwise.

Herein, because the front end of the 1st behaviour's position 341 is connected and fixed on front termination electrode, therefore from the rotation torque forward end electrodes transfer of the 1st behaviour's position 341.Therefore, when supposing that above-mentioned rigid body configures not opposedly, front termination electrode and front termination electrode the front of drain tubular axis 310 (front end flex section 310A) fixed by with the central shaft (M of drain tubular axis 310 ₃₁₀) centered by, towards and the 1st direction (direction (turning clockwise) in Fig. 6 shown in arrow R) of grasping the direction of rotation of position 341 identical rotate.On the other hand, the rear end side of front end flex section 310A cannot rotate freely as front, and thus, front end flex section 310A reverses towards the direction shown in arrow R, and such as bends towards arrow A in same figure ' shown direction.

But, in the electrode catheter 300 of present embodiment, respective central shaft (M ₃₅₅) and (M ₃₅₆) be positioned at the central shaft (M of the rigid body 355 and 356 (high rigid element) on the 3rd imaginary plane P3 across drain tubular axis 310 ₃₁₀) configured by opposed, become and on the 3rd imaginary plane P3, there is the akin mode of leaf spring (in such mode, when use forms the 1st behaviour's position by single line, front end flex section 310A is towards being rotated counterclockwise torsion, and such as towards arrow A in Fig. 6 " shown in direction flexure), therefore when the tractive operation of the 1st behaviour's position 341, can suppress and stop front end flex section 310A to reverse towards the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 310A reversed along the 1st imaginary plane P1 towards the 1st direction flexure (making front end deflect) shown in arrow A.

In addition, when the tractive operation of the 2nd behaviour's position 342 forming electrode catheter 300, the front of the 2nd behaviour's position 342 formed of twisting thread of left-hand lay rotates towards the backtwisting direction of twisting thread () in Fig. 6 clockwise.

Herein, because the front end of the 2nd behaviour's position 342 is connected and fixed on front termination electrode, therefore from the rotation torque termination electrode transmission forward of the 2nd behaviour's position 342.

Therefore, suppose when above-mentioned rigid body configures not opposedly, front termination electrode and front termination electrode the front of drain tubular axis 310 (front end flex section 310A) fixed by with the central shaft (M of drain tubular axis 310 ₃₁₀) centered by, towards and the 2nd direction (direction (clockwise) in Fig. 6 shown in arrow R) of grasping the direction of rotation of position 342 identical rotate.

On the other hand, the rear end side of front end flex section 310A cannot rotate freely as front, and thus, front end flex section 310A reverses towards the direction shown in arrow R, and such as bends towards arrow B in same figure ' shown direction.

But, in the electrode catheter 300 of present embodiment, respective central shaft (M ₃₅₅) and (M ₃₅₆) be positioned at the central shaft (M of the rigid body 355 and 356 (high rigid element) on the 3rd imaginary plane P3 across drain tubular axis 310 ₃₁₀) configured by opposed, become and on the 3rd imaginary plane P3, there is the akin mode of leaf spring (in such mode, when use forms the 2nd behaviour's position by single line, front end flex section 310A is towards being rotated counterclockwise torsion, and such as towards arrow B in Fig. 6 " shown in direction flexure), therefore when the tractive operation of the 2nd behaviour's position 342, can suppress and stop front end flex section 310A to reverse towards the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 310A reversed along the 1st imaginary plane P1 towards the 2nd direction flexure shown in arrow B.

Electrode catheter 300 according to the present embodiment, although the 1st behaviour's position 341 and the 2nd behaviour's position 342 are formed by twisting thread, but can operate the 1st rear end of grasping position 341 or the 2nd behaviour's position 342 by tractive makes the shape of front end flex section 310A in the upper change of the plane (the 1st imaginary plane P1) that reality is identical, reliably bends along the direction (the 1st direction or the 2nd direction) based on operator's will.

< the 4th embodiment >

The electrode catheter 400 of the present embodiment of the cross section shape of front end shown in Figure 7 flex section possesses: the drain tubular axis 410 with front end flex section 410A; Be fixed on the front termination electrode of the front end of this drain tubular axis 410; 1st behaviour's position 441, it is made up of twist thread (left-hand lay), for making the front end flex section 410A of drain tubular axis 410 towards the 1st direction (direction in Fig. 7 shown in arrow A) flexure by inserted through the inside in drain tubular axis 410, the front end of the 1st behaviour's position 441 is connected and fixed on front termination electrode, and rear end can for carrying out tractive operation; 2nd behaviour's position 442, it is made up of twist thread (left-hand lay), bend towards the 2nd direction (direction in Fig. 7 shown in arrow B) for making the front end flex section 410A of drain tubular axis 410, by inserted through the inside in drain tubular axis 410, the front end of the 2nd behaviour's position 442 is connected and fixed on front termination electrode, and rear end can for carrying out tractive operation; Be assemblied in the joystick of the rear end of drain tubular axis 410.

The front end flex section 410A of drain tubular axis 410 be by for the formation of central lumen 419L lumen 419, join multi-cavity structure body then as become for the formation of the lumen 411 ~ 418 being spaced at 8 sub-tube chamber 411L ~ 418L of the surrounding of central lumen 419L with 45 ° with the state of being fixed by adhesive resin.

High rigidity lumen 413 (high rigid element) and the central shaft (M of high rigidity lumen 417 (high rigid element) across drain tubular axis 410 ₄₁₀) being configured in front end flex section 410A by opposed, high rigidity lumen 413 (high rigid element) has central shaft (M on the 2nd imaginary plane P2 ₄₁₃), high rigidity lumen 417 (high rigid element) has central shaft (M on the 2nd imaginary plane P2 ₄₁₇), the 2nd imaginary plane P2 is relative to the central shaft (M containing drain tubular axis 410 ₄₁₀), for the 1st behaviour's position 441 inserted through the central shaft (M of sub-tube chamber 411L ₄₁₁) and for the 2nd behaviour's position 442 inserted through the central shaft (M of sub-tube chamber 415L ₄₁₅) the orthogonal plane of the 1st imaginary plane P1, and the central shaft (M containing drain tubular axis 410 ₄₁₀).

High rigidity lumen 412 (high rigid element) and the central shaft (M of high rigidity lumen 416 (high rigid element) across drain tubular axis 410 ₄₁₀) being configured in front end flex section 410A by opposed, high rigidity lumen 412 (high rigid element) has central shaft (M on the 3rd imaginary plane P3 ₄₁₂), high rigidity lumen 416 (high rigid element) has central shaft (M on the 3rd imaginary plane P3 ₄₁₆), the 3rd imaginary plane P3 be by by the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 410 ₄₁₀) centered by, rotate a certain angle (θ) towards the direction identical with the twisted direction of twisting thread (θ=45 ° in present embodiment.).

The electrode catheter 400 of present embodiment possesses: drain tubular axis 410, be fixed on the front end of drain tubular axis 410 front termination electrode, inserted through the inside in drain tubular axis 410 the 1st behaviour's position 441 and the 2nd behaviour's position 442, be assemblied in the joystick of the rear end of drain tubular axis 410.

In addition, the face shaping of the electrode catheter 400 of present embodiment is identical with the electrode catheter 200 of the 2nd embodiment shown in Fig. 4.

In addition, form the front termination electrode of electrode catheter 400 and joystick be with in the 2nd embodiment before termination electrode 230 and the identical structure of joystick 270.

The front end area forming the drain tubular axis 410 of electrode catheter 400 is front end flex section 410A.

The front end flex section 410A of drain tubular axis 410 is made up of multi-cavity structure body.

As shown in Figure 7, front end flex section 410A comprises: inner side (core) portion 428 fixing lumen 411 ~ 416 by adhesive resin, outside (epidermis) portion 429 be made up of the resin of coated medial part 428, form central lumen 419L in the inside of the lumen 419 forming medial part 428, form sub-tube chamber 411L ~ 418L in the respective inside of lumen 411 ~ 418.

Inserted through the wire (diagram slightly) of front termination electrode etc. in the central lumen 419L being formed at front end flex section 410A.

Be formed at the central shaft (M of the sub-tube chamber 411L of front end flex section 410A and sub-tube chamber 415L across drain tubular axis 410 ₄₁₀) configured by opposed.

Central shaft (the M of sub-tube chamber 411L (lumen 411) ₄₁₁) and the central shaft (M of sub-tube chamber 415L (lumen 415) ₄₁₅) be positioned on the 1st imaginary plane P1.

At sub-tube chamber 411L inserted through the 1st behaviour's position 441 for making the front end flex section 410A of drain tubular axis 410 bend towards the 1st direction shown in arrow A.In addition, position 442 is grasped at sub-tube chamber 415L inserted through the 2nd for making the front end flex section 410A of drain tubular axis 410 bend towards the 2nd direction shown in arrow B.

1st behaviour's position 441 and the 2nd behaviour position 442 and the 1st in the 1st embodiment are grasped position 41 and the 2nd and are grasped that position 42 is identical to be made up of twist thread (left-hand lay).The front end of the 1st behaviour's position 441 and the 2nd behaviour's position 442 is connected and fixed on front termination electrode respectively, and respective rear end is connected to the knob of joystick, thus can for carrying out tractive operation.

Be formed at the central shaft (M of the sub-tube chamber 413L of front end flex section 410A and sub-tube chamber 417L across drain tubular axis 410 ₄₁₀) configured by opposed.

Central shaft (the M of sub-tube chamber 413L (high rigidity lumen 413) ₄₁₃) and the central shaft (M of sub-tube chamber 417L (high rigidity lumen 417) ₄₁₇) be positioned on the 2nd imaginary plane P2.

In the present embodiment, the 2nd imaginary plane P2 is the plane orthogonal relative to the 1st imaginary plane P1, is the central shaft (M containing drain tubular axis 410 ₄₁₀) imaginary plane.

Be formed at the central shaft (M of the sub-tube chamber 412L of front end flex section 410A and sub-tube chamber 416L across drain tubular axis 410 ₄₁₀) configured by opposed.

Central shaft (the M of sub-tube chamber 412L (high rigidity lumen 412) ₄₁₂) and the central shaft (M of sub-tube chamber 416L (high rigidity lumen 416) ₄₁₆) be positioned on the 3rd imaginary plane P3.

In the present embodiment, the 3rd imaginary plane P3 be by by the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 410 ₄₁₀) centered by, towards and formation the 1st grasp position 441 and the 2nd and grasps identical direction, the twisted direction (the twisted direction of front) of twisting thread of position 442 (in Fig. 7 counter clockwise direction) and rotate 45 ° and the imaginary plane that formed.

Be formed at the central shaft (M of the sub-tube chamber 414L of front end flex section 410A and sub-tube chamber 418L across drain tubular axis 410 ₄₁₀) configured by opposed.

The central shaft (M414) of sub-tube chamber 414L (lumen 414) and the central shaft (M418) of sub-tube chamber 418L (lumen 418) are positioned on the 4th imaginary plane P4.In the present embodiment, the 4th imaginary plane P4 be by by the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 410 ₄₁₀) centered by, towards and formation the 1st grasp position 441 and the 2nd and grasps contrary direction, the twisted direction (the twisted direction of front) of twisting thread of position 442 (in Fig. 7 clockwise direction) and rotate 45 ° and the imaginary plane that formed.

The lumen 411 ~ 419 forming sub-tube chamber 411L ~ 418L and central lumen 419L is respectively made up of resin.

As the resin of the lumen 411,414,415,418 and 419 being configured for sub-tube chamber 411L, 414L, 415L, 418L and central lumen 419L to be formed respectively, preferably have with adhesive resin on an equal basis or larger rigidity.

As the D hardness of the resin of formation lumen 411,414,415,418 and 419, such as, be less than 80, be preferably 50 ~ 75.

As the modulus of elasticity in static bending of the resin of formation lumen 411,414,415,418 and 419, such as, be 15 ~ 1,000MPa, be preferably 100 ~ 800MPa.

As the resin material forming lumen 411,414,415,419, the resin same with the resin-phase of the lumen 11 ~ 16 formed in the 1st embodiment can be enumerated.

The high rigidity lumen 412,413,416 and 417 forming sub-tube chamber 412L, 413L, 416L and 417L is the high rigid element be made up of rigidity specific viscosity mixture resin and the resin that forms the high rigidity of the resin of lumen 411,414,415,418 and 419.

As the resin material forming high rigidity lumen 412,413,416 and 417, polyimides, polyether-ether-ketone (PEEK) and nylon 11 etc. can be enumerated.

The D hardness forming the resin of the D hardness ratio formation lumen 411,414,415,418 and 419 of the resin of high rigidity lumen 412,413,416 and 417 is high, such as, be more than 72, be preferably 77 ~ 95.

As the modulus of elasticity in static bending of the resin of the high rigidity lumen 412,413,416 and 417 of formation, such as, be 1,500 ~ 19,000MPa, be preferably 2,000 ~ 7,000MPa.

By by respective central shaft (M ₄₁₃) and (M ₄₁₇) be positioned at the central shaft (M of the high rigidity lumen 413 and 417 on the 2nd imaginary plane P2 across drain tubular axis 410 ₄₁₀) configure opposedly, the front end flex section 410A of drain tubular axis 410 is become and there is the akin mode of leaf spring with on the 2nd imaginary plane P2, even if not at the inside of front end flex section 410A configuration leaf spring, also can bend along the 2nd imaginary plane P2, easily bend towards the direction vertical with the 2nd imaginary plane P2 along the 1st imaginary plane P1.

In addition, by by respective central shaft (M ₄₁₂) and (M ₄₁₆) be positioned at the central shaft (M of the high rigidity lumen 412 and 416 on the 3rd imaginary plane P3 across drain tubular axis 410 ₄₁₀) configure, the front end flex section 410A of drain tubular axis 410 is become and there is the akin mode of leaf spring with on the 3rd imaginary plane P3, not easily bend along the 3rd imaginary plane P3, easily bend towards the direction vertical with the 3rd imaginary plane P3. opposedly

When operating the tractive of the 1st behaviour's position 441 forming electrode catheter 400, rotated towards the backtwisting direction (turning clockwise in Fig. 7) of twisting thread by the front of the 1st behaviour's position 441 formed of twisting thread of left-hand lay.

Herein, because the front end of the 1st behaviour's position 441 is connected and fixed on front termination electrode, therefore from the rotation torque forward end electrodes transfer of the 1st behaviour's position 441.

Therefore, suppose when the lumen forming sub-tube chamber 412L and 416L is not high rigid element, and when having with the rigidity that lumen 414 and 418 is equal, then before termination electrode and front termination electrode the front of drain tubular axis 410 (front end flex section 410A) fixed by with the central shaft (M of drain tubular axis 410 ₄₁₀) centered by, towards and the 1st direction (direction (clockwise) in Fig. 7 shown in arrow R) of grasping the direction of rotation of position 441 identical rotate.

On the other hand, the rear end side of front end flex section 410A cannot rotate freely as front, and thus, front end flex section 410A reverses towards the direction shown in arrow R, and such as bends towards arrow A in same figure ' shown direction.

But, in the electrode catheter 400 of present embodiment, sub-tube chamber 412L and 416L is formed by high rigidity lumen 412 and 416 (high rigid element) respectively, become and on the 3rd imaginary plane P3, there is the akin mode of leaf spring (in such mode, when use forms the 1st behaviour's position by single line, front end flex section 410A counterclockwise reverses, and such as towards arrow A in Fig. 7 " shown in direction flexure), therefore when the tractive operation of the 1st behaviour's position 441, can suppress and stop front end flex section 410A to reverse towards the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 410A reversed along the 1st imaginary plane P1 towards the 1st direction flexure shown in arrow A.

In addition, when operating the tractive of the 2nd behaviour's position 442 forming electrode catheter 400, rotated towards the backtwisting direction of twisting thread () by the front of the 2nd behaviour's position 442 formed of twisting thread of left-hand lay in Fig. 7 clockwise.

Herein, because the front end of the 2nd behaviour's position 442 is connected and fixed on front termination electrode, therefore from the rotation torque forward end electrodes transfer of the 2nd behaviour's position 442.

Therefore, suppose when the lumen forming sub-tube chamber 412L and 416L is not high rigid element, and when having with the rigidity that lumen 414 and 418 is equal, front termination electrode and front termination electrode the front of drain tubular axis 410 (front end flex section 410A) fixed by with the central shaft (M of drain tubular axis 410 ₄₁₀) centered by, towards and the 2nd direction (direction (clockwise) in Fig. 7 shown in arrow R) of grasping the direction of rotation of position 442 identical rotate.

On the other hand, the rear end side of front end flex section 410A cannot rotate freely as front, and thus, front end flex section 410A reverses towards the direction shown in arrow R, and such as bends towards arrow B in same figure ' shown direction.

But, in the electrode catheter 400 of present embodiment, sub-tube chamber 412L and 416L is formed by high rigidity lumen 412 and 416 (high rigid element) respectively, become and on the 3rd imaginary plane P3, there is the akin mode of spring (in such mode, when use forms the 2nd behaviour's position by single line, front end flex section 410A counterclockwise reverses, and such as towards arrow B in Fig. 7 " shown in direction flexure), therefore when the tractive operation to the 2nd behaviour's position 442, can suppress and stop front end flex section 410A to reverse towards the direction (turning clockwise) shown in arrow R, its result, can make without the front end flex section 410A reversed along the 1st imaginary plane P1 towards the 2nd direction flexure shown in arrow B.

Electrode catheter 400 according to the present embodiment, 1st behaviour's position 441 and the 2nd behaviour's position 442 are formed by twisting thread, and tractive operation is carried out to the rear end of the 1st behaviour's position 441 or the 2nd behaviour's position 442, make the shape of front end flex section 410A in the upper change of the plane (the 1st imaginary plane P1) that reality is identical thus, can reliably bend according to the direction (the 1st direction or the 2nd direction) of the suppression based on operator.

< the 5th embodiment >

The electrode catheter 500 of the present embodiment of the cross section shape of front end shown in Figure 8 flex section possesses: the drain tubular axis 510 with front end flex section 510A; Be fixed on the front termination electrode of the front end of this drain tubular axis 510; 1st behaviour's position 541, it is made up of twist thread (left-hand lay), for making the front end flex section 510A of drain tubular axis 510 towards the 1st direction (direction in Fig. 8 shown in arrow A) flexure by inserted through the inside in drain tubular axis 510, the front end of the 1st behaviour's position 541 is connected and fixed on front termination electrode, and rear end can for carrying out tractive operation; 2nd behaviour's position 542, it is made up of twist thread (left-hand lay), for making the front end flex section 510A of drain tubular axis 510 towards the 2nd direction (direction in Fig. 8 shown in arrow B) flexure by inserted through the inside in drain tubular axis 510, the front end of the 2nd behaviour's position 542 is connected and fixed on front termination electrode, and rear end can for carrying out tractive operation; Be assemblied in the joystick of the rear end of drain tubular axis 510.

The front end flex section 510A of drain tubular axis 510 is the multi-cavity structure body configured with the state of being fixed by adhesive resin by 4 lumens 511 ~ 514 for the formation of tube chamber 511L ~ 514L.

At front end flex section 510A, shaft-like rigid body 551 (high rigid element) and shaft-like rigid body 552 (high rigid element) to be embedded in the state of the formation resin of drain tubular axis 510, across the central shaft (M of drain tubular axis 510 ₅₁₀) configure, shaft-like rigid body 551 (high rigid element) has central shaft (M on the 3rd imaginary plane P3. opposedly ₅₅₁), shaft-like rigid body 552 (high rigid element) has central shaft (M on the 3rd imaginary plane P3 ₅₅₂), the 3rd imaginary plane P3 is by by relative to the central shaft (M containing drain tubular axis 510 ₅₁₀), for the 1st behaviour's position 541 inserted through the central shaft (M of tube chamber 511L ₅₁₁) and for the 2nd behaviour's position 542 inserted through the central shaft (M of tube chamber 512L ₅₁₂) the orthogonal plane of the 1st imaginary plane P1 that is central shaft (M containing drain tubular axis 510 ₅₁₀) the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 510 ₅₁₀) centered by, rotate a certain angle (θ) towards the direction identical with the twisted direction of twisting thread (θ=45 ° in present embodiment.) rotate and formed.

The electrode catheter 500 of present embodiment possesses: drain tubular axis 510, be fixed on the front end of drain tubular axis 510 front termination electrode, inserted through the inside in drain tubular axis 510 the 1st behaviour's position 541 and the 2nd behaviour's position 542, be assemblied in the joystick of the rear end of drain tubular axis 510.

In addition, the face shaping of the electrode catheter 500 of present embodiment is identical with the electrode catheter 200 of the 2nd embodiment shown in Fig. 4.

In addition, form the front termination electrode of electrode catheter 500 and joystick be with in the 2nd embodiment before termination electrode 230 and the identical structure of joystick 270.

The front end area forming the drain tubular axis 510 of electrode catheter 500 is front end flex section 510A.

The front end flex section 510A of drain tubular axis 510 is made up of multi-cavity structure body.

As shown in Figure 8, front end flex section 510A comprises: inner side (core) portion 518 fixing lumen 511 ~ 514 by adhesive resin, outside (epidermis) portion 519 be made up of the resin of coated medial part 518, forms tube chamber 511L ~ 514L in the respective inside of lumen 511 ~ 514.

Be formed at the central shaft (M of tube chamber 511L and 512L across drain tubular axis 510 of front end flex section 510A ₅₁₀) configure, the central shaft (M of tube chamber 511L (lumen 511) opposedly ₅₁₁) and the central shaft (M of tube chamber 512L (lumen 512) ₅₁₂) be positioned on the 1st imaginary plane P1.

Inserted through the 1st behaviour's position 541 for making the front end flex section 510A of drain tubular axis 510 bend towards the 1st direction shown in arrow A in tube chamber 511L.

In addition, position 542 is grasped at tube chamber 512L inserted through the 2nd for making the front end flex section 510A of drain tubular axis 510 bend towards the 2nd direction shown in arrow B.

1st behaviour's position 541 and the 2nd behaviour's position 542 are formed by grasping with the 1st in the 1st embodiment twist thread (left-hand lay) that position 41 and the 2nd grasps position 42 identical.The front end of the 1st behaviour's position 541 and the 2nd behaviour's position 542 is connected and fixed on front termination electrode respectively, and respective rear end is connected to the knob of joystick, thus can for carrying out tractive operation.

Be formed at the central shaft (M of tube chamber 513L and 514L across drain tubular axis 510 of front end flex section 510A ₅₁₀) configure, the central shaft (M of tube chamber 513L (lumen 513) opposedly ₅₁3) and the central shaft (M of tube chamber 514L (lumen 514) ₅₁4) be positioned on the 2nd imaginary plane P2.

In the present embodiment, the 2nd imaginary plane P2 is the plane orthogonal relative to the 1st imaginary plane P1, and is the central shaft (M containing drain tubular axis 510 ₅₁₀) imaginary plane.

The lumen 511 ~ 514 forming tube chamber 511L ~ 514L is made up of resin.

As forming the resin of lumen 511 ~ 514, preferably have with adhesive resin on an equal basis or larger rigidity.

As the D hardness of the resin of formation lumen 511 ~ 514, such as, be less than 80, be preferably 50 ~ 75.

As the modulus of elasticity in static bending of the resin of formation lumen 511 ~ 514, such as, be 15 ~ 1,000MPa, be preferably 100 ~ 800MPa.

As the resin material forming lumen 511 ~ 514, the resin same with the resin-phase of the lumen 11 ~ 16 formed in the 1st embodiment can be enumerated.

At the front end flex section 510A of drain tubular axis 510, the 3rd imaginary plane P3 has central shaft (M ₅₅₁) shaft-like rigid body 551 (high rigid element) and on the 3rd imaginary plane P3, there is central shaft (M ₅₅₂) shaft-like rigid body 552 (high rigid element), to be embedded in the state of the formation resin of drain tubular axis 510, across the central shaft (M of drain tubular axis 510 ₅₁₀) configure opposedly.

In the present embodiment, the 3rd imaginary plane P3 be by by the 2nd imaginary plane P2 with the central shaft (M of drain tubular axis 510 ₅₁₀) centered by, towards and formation the 1st grasp position 541 and the 2nd and grasps the imaginary plane that identical direction, the twisted direction (the twisted direction of front) of twisting thread of position 542 (in Fig. 8 counter clockwise direction) rotates 45 °.

By by respective central shaft (M ₅₅₁) and (M ₅₅₂) be positioned at the central shaft (M of the rigid body 551 and 552 on the 3rd imaginary plane P3 across drain tubular axis 510 ₅₁₀) configure, the front end flex section 510A of drain tubular axis 510 is become and there is the akin mode of spring with on the 3rd imaginary plane P3. opposedly

Namely, resistance when front end flex section 510A being bent along the 3rd imaginary plane P3 is obviously greater than resistance when this front end flex section 510A is bent towards the direction vertical with the 3rd imaginary plane P3, front end flex section 510A not easily bends along the 3rd imaginary plane P3, easily bends towards the direction vertical with the 3rd imaginary plane P3.

When operating the tractive of the 1st behaviour's position 541 forming electrode catheter 500, rotated towards the backtwisting direction of twisting thread () by the front of the 1st behaviour's position 541 formed of twisting thread of left-hand lay in Fig. 8 clockwise.

Herein, because the front end of the 1st behaviour's position 541 is connected and fixed on front termination electrode, therefore from the rotation torque forward end electrodes transfer of the 1st behaviour's position 541.

Therefore, suppose when above-mentioned rigid body configures not opposedly, front termination electrode and front termination electrode the front of drain tubular axis 510 (front end flex section 510A) fixed by with the central shaft (M of drain tubular axis 510 ₅₁₀) centered by, towards and the 1st direction (direction (clockwise) in Fig. 8 shown in arrow R) of grasping the direction of rotation of position 541 identical rotate.

On the other hand, the rear end side of front end flex section 510A cannot be free as front, and thus, front end flex section 510A reverses towards the direction shown in arrow R, and such as bend towards arrow A in same figure ' shown direction.

But, in the electrode catheter 500 of present embodiment, respective central shaft (M ₅₅₁) and (M ₅₅₂) be positioned at the central shaft (M of the rigid body 551 and 552 (high rigid element) on the 3rd imaginary plane P3 across drain tubular axis 510 ₅₁₀) configured by opposed, become and on the 3rd imaginary plane P3, there is the akin mode of spring (in such mode, when use forms the 1st behaviour's position by single line, front end flex section 510A counterclockwise reverses, and such as towards arrow A in Fig. 8 " shown in direction flexure), therefore when the tractive operation of the 1st behaviour's position 541, can suppress and stop front end flex section 510A to reverse towards the direction (clockwise) shown in arrow R, its result, can make without the front end flex section 510A reversed along the 1st imaginary plane P1 towards the 1st direction flexure shown in arrow A.

In addition, when operating the tractive of the 2nd behaviour's position 542 forming electrode catheter 500, rotated towards the backtwisting direction of twisting thread () by the front of the 2nd behaviour's position 542 formed of twisting thread of left-hand lay in Fig. 8 clockwise.

Herein, because the front end of the 2nd behaviour's position 542 is connected and fixed on front termination electrode, therefore from the rotation torque forward end electrodes transfer of the 2nd behaviour's position 542.

Therefore, suppose when above-mentioned rigid body not by opposed configuration when, front termination electrode and front termination electrode the front of drain tubular axis 510 (front end flex section 510A) fixed with the central shaft (M of drain tubular axis 510 ₅₁₀) centered by, towards and the 2nd direction (direction (clockwise) in Fig. 8 shown in arrow R) of grasping the direction of rotation of position 542 identical rotate.

On the other hand, the rear end side of front end flex section 510A cannot rotate freely as front, and thus, front end flex section 510A reverses towards the direction shown in arrow R, and such as bends towards arrow B in same figure ' shown direction.

But, in the electrode catheter 500 of present embodiment, respective central shaft (M ₅₅₁) and (M ₅₅₂) be positioned at the central shaft (M of the rigid body 551 and 552 (high rigid element) on the 3rd imaginary plane P3 across drain tubular axis 510 ₅₁₀) configured by opposed, become and there is the akin mode of spring (in such mode on the 3rd imaginary plane P3, when use forms the 2nd behaviour's position by single line, front end flex section 510A counterclockwise reverses, and such as towards arrow B in Fig. 8 " shown in direction flexure), therefore when the tractive operation of the 2nd behaviour's position 542, can suppress and stop front end flex section 510A to reverse towards the direction (clockwise) shown in arrow R, its result, the front end flex section 510A of torsion can be made along the 1st imaginary plane P1 towards the 2nd direction flexure shown in arrow B.

Electrode catheter 500 according to the present embodiment, although the 1st behaviour's position 541 and the 2nd behaviour's position 542 are formed by twisting thread, but can operate the 1st rear end of grasping position 541 or the 2nd behaviour's position 542 by tractive makes the shape of front end flex section 510A in the identical flat face of reality (the 1st imaginary plane P1) upper change, reliably can bend according to the direction (the 1st direction or the 2nd direction) based on operator's will.

So far, embodiments of the present invention are illustrated, but front end of the present invention the catheter of deflecting operation can be not limited to above-mentioned mode, can carry out various change.Such as, the 2nd imaginary plane P2 and the 3rd imaginary plane P3 angulation (θ) can not be 45 °, and the scope can set up 0 ° of < θ < 90 ° suitably adjusts.Wherein, for the viewpoint of flatness of shape fully guaranteeing front end flex section, angle (θ) is preferably 20 ~ 70 °, is more preferably 30 ~ 60 °, is particularly preferably 40 ~ 50 °.

In addition, as forming twisting thread of behaviour's position, twisting thread of right-laid can be used.

In addition, can be the number of behaviour's position be, and the single current of 1 can the catheter of deflecting operation to the front end of type.

In addition, can the embodiment of catheter of deflecting operation as front end of the present invention, be illustrated for electrode catheter, but the present invention also can be applied to and guide catheter (guiding catheter), angiography catheter, conduit pin (pilot pin), miniature catheter, through catheter etc.

Wherein, description of reference numerals is as follows:

100: electrode catheter; 10: drain tubular axis; 10A: front end flex section; 11 ~ 16: lumen; 11L ~ 16L: tube chamber; 18: medial part; 19: lateral part; 20: pouring member; 30: front termination electrode; 30L: the wire of front termination electrode; 32: ring electrode; 32L: the wire of ring electrode; 41: the 1 behaviour's positions; 42: the 2 behaviour's positions; 51,52: stream formation pipe (high rigid element); 60: leaf spring; 70: joystick; 75: knob; 80: the ascending pipe of perfusion liquid; 200: electrode catheter; 210: drain tubular axis; 210A: front end flex section; 211,212,215,216: lumen; 213,214: high rigidity lumen (high rigid element); 211L ~ 216L: tube chamber; 218: medial part; 219: lateral part; 300: electrode catheter; 310: drain tubular axis; 310A: front end flex section; 311 ~ 316: lumen; 311L ~ 316L: tube chamber; 318: adhesive resin; 355,356: rigid body (high rigid element); 400: electrode catheter; 410: drain tubular axis; 410A: front end flex section; 411,414,415,418,419: lumen; 412,413,416,417: high rigidity lumen; 411L ~ 418L: sub-tube chamber; 419L: central lumen; 428: medial part; 429: lateral part; 500: electrode catheter; 510: drain tubular axis; 510A: front end flex section; 511 ~ 514: lumen; 511L ~ 514L: tube chamber; 518: medial part; 519: lateral part; 551,552: rigid body (high rigid element).

Claims

1. front end can the catheter of deflecting operation, it is characterized in that,

Have drain tubular axis and behaviour's position, described drain tubular axis has flex section in front end, and described behaviour's position is formed by twisting thread, bend for making the flex section of described drain tubular axis, described behaviour's position is by inserted through the inside in this drain tubular axis, and the rear end of this behaviour's position can for tractive operation

At least flex section of described drain tubular axis is multi-cavity structure body,

At least 1 in the multiple tube chambers being formed at described flex section inserted through described behaviour's position,

At described flex section, across the central shaft of described drain tubular axis opposed configure 2 tubuloses or shaft-like high rigid element, described 2 high rigid elements have respective central shaft on the 3rd imaginary plane, described 3rd imaginary plane is by by relative to the central shaft containing described drain tubular axis and be inserted through the orthogonal plane of the 1st imaginary plane of central shaft of tube chamber of described behaviour's position, and be the 2nd imaginary plane of the central shaft containing described drain tubular axis, the θ that rotates a certain angle towards the direction identical with described twisted direction of twisting thread centered by the central shaft of described drain tubular axis is formed, wherein, 0 ° of < θ < 90 °.

2. front end according to claim 1 can the catheter of deflecting operation, it is characterized in that,

Across the central shaft of described drain tubular axis opposed configure and there are 2 tube chambers of respective central shaft on described 3rd imaginary plane, configure respectively and manage as in described high rigid element.

3. front end according to claim 2 can the catheter of deflecting operation, it is characterized in that,

The stream of perfusion liquid is formed by described interior pipe.

4. front end according to claim 1 can the catheter of deflecting operation, it is characterized in that,

The state configuration that described multi-cavity structure body is fixed by adhesive resin with multiple lumen,

As described high rigid element, configure and form than described adhesive resin and other lumens the lumen that the high material of resin forms by rigidity.

5. front end according to claim 1 can the catheter of deflecting operation, it is characterized in that,

As described high rigid element, shaft-like rigid body is embedded in the formation resin of described drain tubular axis.

6. the front end according to any one of Claims 1 to 5 can the catheter of deflecting operation, it is characterized in that,

The angulation θ of described 2nd imaginary plane and described 3rd imaginary plane is 45 ± 5 °.

7. the front end according to any one of claim 1 ~ 6 can the catheter of deflecting operation, it is characterized in that,

Described 2nd imaginary plane of described flex section configures leaf spring.

8. the front end according to any one of claim 1 ~ 7 can the catheter of deflecting operation, it is characterized in that,

In the multiple tube chambers being formed at described flex section, across the central shaft of described drain tubular axis opposed 2 tube chambers configuring respectively inserted through described behaviour's position.