CN105142708B - The catheter of the deflectable operation in front end - Google Patents

The catheter of the deflectable operation in front end Download PDF

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Publication number
CN105142708B
CN105142708B CN201480022925.4A CN201480022925A CN105142708B CN 105142708 B CN105142708 B CN 105142708B CN 201480022925 A CN201480022925 A CN 201480022925A CN 105142708 B CN105142708 B CN 105142708B
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China
Prior art keywords
catheter
behaviour
axle
flex section
central shaft
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CN201480022925.4A
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Chinese (zh)
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CN105142708A (en
Inventor
森谦二
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Japan Lifeline Co Ltd
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Japan Lifeline Co Ltd
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Publication of CN105142708A publication Critical patent/CN105142708A/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0144—Tip steering devices having flexible regions as a result of inner reinforcement means, e.g. struts or rods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires

Abstract

The present invention provides a kind of catheter of the deflectable operation in front end, it is the electrode catheter (100) for possessing the catheter axle (10) in front end with flex section (10A), preceding termination electrode (30) and the behaviour's position (41 and 42) constituted by twisting thread, the tube chamber (11L and 12L) for being formed at flex section (10A) be inserted through respectively behaviour position (41 and 42), flex section (10A) across axle (10) central shaft (M10) be opposed to configure tubulose high rigidity part (51 and 52), the high rigidity part (51 and 52) will be orthogonal relative to the 1st imaginary plane (P1) the 2nd imaginary plane (P2) with the central shaft (M of axle (10)10) centered on towards with the 3rd imaginary plane (P3) of the twisted direction identical direction anglec of rotation (θ) twisted thread have respective central shaft (M51) and (M52〕.According to the catheter of the deflectable operation in the front end, although behaviour's position is constituted by twisting thread, the shape of flex section is still set to change in actual identical plane.

Description

The catheter of the deflectable operation in front end
Technical field
The present invention relates to the catheter of the deflectable operation in front end, in more detail, it is related to by operative configuration in vitro Operating portion, can make the fore-end flexure for being inserted into endoceliac catheter, and the front end for changing the direction of its front end can The catheter of deflecting operation.
Background technology
For example, being configured in electrode catheter of the inside of heart etc. is inserted into via arteries, it is necessary to operate Operating portion that the rear end (peri position end or on hand side) of external catheter is assembled makes to be inserted into the catheter in heart The direction change (deflection) of front end (amphi position end).
It is used as the mechanism for being operable to deflect the front end of catheter for side on hand, it is known to following patent texts Offer the mechanism shown in 1.It is springy in the inside configuration tool of the fore-end of catheter in the mechanism shown in patent document 1 Leaf spring, the front end for the behaviour's position that is connected in the one side of the leaf spring or two sides.In addition, by pulling operation behaviour's position Rear end bends leaf spring, the fore-end of catheter is bent along the direction with the plane of leaf spring vertical, so that catheter Front end direction change.
In addition, in the electrode catheter of the deflectable operation in front end, for the de- of the preceding termination electrode for avoiding being fixed on front end The viewpoint such as fall, the applicant also proposes the front end relative to preceding termination electrode web spring, and solid in preceding termination electrode connection Surely grasp the catheter of the deflectable operation in front end of the front end of position (with reference to following patent documents 2).
The catheter of the deflectable operation in front end according to patent document 2, constitutes the preceding termination electrode of the catheter not only Link with the front end of catheter axle and the front end of leaf spring, be connected also relative to the front end of behaviour's position, therefore, it is possible to have Termination electrode comes off before preventing to effect.
Fig. 9~Figure 11 shows 1 example of the electrode catheter of the deflectable operation in front end.
The electrode catheter 900 has：There is flex section 910A catheter axle 910 in front end, catheter is fixed on The preceding termination electrode 930 of the front end of axle 910；It is inserted through before being connected and fixed in the inside of catheter axle 910 and respective front end Termination electrode 930, respective rear end is available for the 1st behaviour's behaviour's position 942 of position 941 and the 2nd that drawing is operated；Along catheter The axial arrangement of axle 910 flex section 910A inside leaf spring 960, be assemblied in catheter axle 910 rear end control hand Handle 970.
As shown in Figure 10, the flex section 910A of catheter axle 910 is to be internally formed in the respective of lumen 911~916 Tube chamber 911L~916L multi-cavity structure body, is inserted through the 1st behaviour's position 941 in tube chamber 911L, the 2nd behaviour is inserted through in tube chamber 912L Position 942.
In Fig. 10, P1 is the central shaft (M comprising catheter axle 910910), for the tube chamber 911L that is inserted through of behaviour's position 941 Central shaft (M911), the tube chamber 912L central shaft (M that is inserted through for behaviour's position 942912) the 1st imaginary plane.
In addition, P2 is the plane orthogonal relative to the 1st imaginary plane P1, for the central shaft (M comprising catheter axle 910910〕 The 2nd imaginary plane, on the 2nd imaginary plane P2 configure leaf spring 960.
In the electrode catheter 900, in order that the flex section 910A of catheter axle 910 along the 1st direction (Fig. 9 and Direction in Figure 10 shown in arrow A) bend, it is necessary to make the knob 975 for being assemblied in joystick 970 be rotated along A1 directions, to the 1st The rear end for grasping position 941 carries out drawing operation.
In addition, in order that the flex section 910A of catheter axle 910 is along the 2nd direction (in Fig. 9 and Figure 10 shown in arrow B Direction) flexure is, it is necessary to make the knob 975 for being assemblied in joystick 970 be rotated along B1 directions, after the 2nd behaviour's position 942 End carries out drawing operation.
Patent document 1：If No. 3232308 publication of patent
Patent document 2：JP 2006-61350 publications
In addition, in the fore-end for making catheter have flexibility etc. viewpoint, as carrying out front end deflection behaviour Behaviour's position of work, is preferably used by by the line that constitutes of twisting thread for the multiple bare wire doubling twistings being made up of metal etc..
If however, carrying out drawing operation to the rear end for having the behaviour's position for composition of twisting thread, it is untied in behaviour's position edge Direction (circumference) rotation of doubling twisting, its rotation torque (counter-torque) is passed via preceding termination electrode etc. to the front end of catheter axle Pass, torsion is produced in the flex section of catheter axle, as a result, producing can not make what the flex section was bent on same level Problem.
For example, constituting behaviour's position (the 1st behaviour's operation use of position 941 and the 2nd of above-mentioned electrode catheter 900 Line 942) in the case of the twisting thread and constitute of left-hand lay, if the rear end of position 941, the 1st behaviour's position are grasped in drawing operation the 1st 941 front rotates towards the direction (direction (clockwise direction) in Figure 10 shown in arrow r1) of backtwisting.
Herein, termination electrode 930 before being connected and fixed on due to the front end of the 1st behaviour's position 941, therefore used from the 1st operation Termination electrode 930 is transmitted the rotation torque of line 941 forward, the catheter axle that preceding termination electrode 930 and preceding termination electrode 930 are fixed 910 (flex section 910A) front is with the central shaft (M of catheter axle 910910) centered on, grasp position 941 towards with the 1st Direction of rotation (backtwisting direction) identical direction (direction (clockwise direction) in Figure 10 shown in arrow R) rotation.
On the other hand, flex section 910A rear end side can not rotate due to being fixed on coil pipe etc., thus, in catheter The flex section 910A of axle 910 be (flex section 910A's shown in the rear end side and Figure 11 of the flex section 910A shown in Figure 10 Between front) produce torsion.In addition, producing torsion in flex section 910A in the drawing operation by the 1st behaviour's position 941 In the state of, it is impossible to flex section 910A is bent along along same level.
In addition, as shown in figure 11, flex section 910A front is with the central shaft (M of catheter axle 910910) centered on, Rotated along the direction of rotation identical direction with the 1st behaviour's position 941, therefore the flexure direction of flex section 910A front (yawing moment of electrode catheter 900) is not the 1st direction (side in Figure 10 shown in arrow A along the 1st imaginary plane P1 To), for example, to make the 1st direction with the central shaft (M of catheter axle 910910) centered on towards and the 1st behaviour position 941 rotation Turn the direction (direction shown arrow A ' in Figure 10) that direction identical direction rotates 45 ° or so.
On the other hand, if the rear end of position 942, the front edge of the 2nd behaviour's position 942 are grasped in drawing operation the 2nd Backtwisting direction (direction (clockwise direction) in Figure 10 shown in arrow r2) rotates, and transmission has the catheter axle of the rotation torque 910 (flex section 910A) front is with the central shaft (M of catheter axle 910910) centered on along and the 2nd behaviour's position 942 Direction of rotation identical direction (direction (clockwise direction) in Figure 10 shown in arrow R) rotates.Thus, in flex section 910A Produce identical to reverse, therefore flex section 910A can not be made to be bent along along same level.
In addition, in this case, flex section 910A front is also along the direction of rotation with the 2nd behaviour's position 942 Identical direction rotates, thus flex section 910A front flexure direction (yawing moment of electrode catheter 900) no It is the 2nd direction (direction in Figure 10 shown in arrow B) along the 1st imaginary plane P1, for example, makes the 2nd direction with catheter Central shaft (the M of axle 910910) centered on towards and the 2nd behaviour position 942 direction of rotation identical direction rotate 45 ° work directions (direction shown arrow B ' in Figure 10).
When drawing operation behaviour's position, it is impossible to flex section is bent on same level (de- from the 1st imaginary plane From) above-mentioned phenomenon (problem) do not produced using when constituting behaviour's position by single line, but because using constituting operation by twisting thread Produced with line, as it is new the problem of.
The content of the invention
The present invention be in view of the foregoing formed by.
Although being constituted it is an object of the invention to provide one kind behaviour's position by twisting thread, the shape of flex section can be made Change the catheter of the deflectable operation in front end of (flatness for ensuring change in shape) in actual identical plane.
(1) catheter of the deflectable operation in front end of the invention, with catheter axle and behaviour's position, above-mentioned catheter axle Front end has flex section (hereinafter referred to as " front end flex section ".), aforesaid operations line is constituted by twisting thread, to make above-mentioned lead The front end flex section bending of liquid pipe axle, aforesaid operations line is inserted through in the inside of the catheter axle, and its rear end is available for leading Pulling process,
At least flex section of above-mentioned catheter axle is multi-cavity structure body,
At least one in the multiple tube chambers for being formed at above-mentioned front end flex section is inserted through aforesaid operations line,
In above-mentioned front end flex section, it is opposed to configure 2 tubuloses or shaft-like across the central shaft of above-mentioned catheter axle High rigidity part, above-mentioned 2 high rigidity parts on the 3rd imaginary plane have respective central shaft,
Above-mentioned 3rd imaginary plane is by relative to the central shaft containing above-mentioned catheter axle and will be inserted through above-mentioned behaviour The orthogonal plane of 1st imaginary plane of the central shaft of the tube chamber of position and be the 2nd of the central shaft containing above-mentioned catheter axle Imaginary plane, court rotates necessarily with the above-mentioned twisted direction identical direction twisted thread centered on the central shaft of above-mentioned catheter axle Angle (θ) (wherein, 0 ° of 90 ° of ＜ θ ＜.) formed by.
Herein, " high rigidity part " refer to by rigidity (hardness and the modulus of elasticity in static bending) than constitute front end flexible portion its The structure member for the catheter axle that the high material of his material is constituted.
In addition, " the twisted direction twisted thread " is the twisted direction (rotation of the bare wire of doubling twisting for the front for grasping position Turn direction).
According to the catheter of the deflectable operation in the front end of such structure, by that will have on above-mentioned 3rd imaginary plane 2 high rigidity parts of respective central shaft are opposed to configuration across the central shaft of catheter axle, thus as with it is false the 3rd Think there is the close state of leaf spring in plane.
Thereby, it is possible to suppress the torsion of the front end flex section along with the rotation twisted thread, as a result, front end can be suppressed Flex section is bent towards the direction departed from from the 1st imaginary plane.
(2) in the catheter of the deflectable operation in front end of the present invention, it is preferably, at the center across above-mentioned catheter axle Axle is opposed to configuration and has 2 tube chambers of respective central shaft on above-mentioned 3rd imaginary plane, is respectively configured as above-mentioned height The inner tube of rigid element.
(3) in the catheter of the deflectable operation in front end of above-mentioned (2), it is preferably to be used by the formation perfusion of above-mentioned inner tube The stream (being the fluid injection catheter of the deflectable operation in front end) of liquid.
(4) in the catheter of the deflectable operation in front end of the present invention, it is preferably, above-mentioned multi-cavity structure body is with multiple chambers The state that pipe is fixed by adhesive resin is configured, and as above-mentioned high rigidity part, configuration is by rigidity than above-mentioned adhesive tree The lumen for constituting the high material composition of resin of fat and other lumens.
(5) it is preferably, as the above-mentioned high rigidity part of the catheter for the deflectable operation in front end for constituting the present invention, by bar The rigid body of shape is embedded in the composition resin of above-mentioned catheter axle.
(6) in the catheter of the deflectable operation in front end of the present invention, it is preferably, above-mentioned 2nd imaginary plane and the above-mentioned 3rd Above-mentioned angle (θ) formed by imaginary plane is 45 ± 5 °.
(7) in the catheter of the deflectable operation in front end of the present invention, it is preferably, in the above-mentioned of above-mentioned front end flex section Leaf spring is configured on 2nd imaginary plane.
(8) the present invention the deflectable operation in front end catheter in, be preferably, on be formed at above-mentioned flex section It is in multiple tube chambers, across above-mentioned catheter axle central shaft be opposed to configuration 2 tube chambers be inserted through aforesaid operations line respectively, As double fluid to type the deflectable operation in front end catheter.
In this case, the twisted direction of 2 behaviour's positions is identical.
In the catheter of the deflectable operation in front end of the present invention, behaviour's position the (the 1st is constituted by twisting thread by pulling operation Grasp position or the 2nd behaviour position) rear end, the front end flex section of catheter axle can be made to be scratched along the 1st imaginary plane It is bent.
That is, according to the catheter of the deflectable operation in front end of the present invention, although behaviour's position is constituted by twisting thread, it can make The shape of front end flex section changes (flatness for ensuring change in shape) in actual identical plane.
Brief description of the drawings
Fig. 1 is the summary front view of the electrode catheter of the 1st embodiment of the present invention.
Fig. 2 is the sectional elevation (Fig. 1 II-II sectional views) of the front end flex section of the electrode catheter shown in Fig. 1.
Fig. 3 is the longitudinal section (Fig. 2 III-III sectional views) of 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.
Fig. 5 is the sectional elevation (Fig. 4 V-V sectional views) of 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 the front view of the fore-end of the electrode catheter of the catheter as the deflectable operation in front end.
Figure 10 is the sectional elevation (Fig. 1 X-X sectional views) of the front end flex section of the electrode catheter shown in Fig. 9.
Figure 11 is the sectional elevation (Fig. 1 XI-XI sectional views) of the front end flex section of the electrode catheter shown in Fig. 9.
Embodiment
<1st embodiment>
The electrode catheter 100 of one embodiment of the catheter of the deflectable operation in front end of the present invention is for example in heart Used in the diagnosis or treatment of heart murmur.
The electrode catheter 100 of present embodiment shown in Fig. 1~Fig. 3 possesses：Drain with front end flex section 10A Pipe axle 10；It is connected to the pouring member 20 of the front end of the catheter axle 10；It is fixed on the front end electricity of the front end of the pouring member 20 Pole 30；It is assemblied in the front end flex section 10A of catheter axle 10 3 ring electrodes 32；1st behaviour's position 41, it is by twisting thread (left-hand lay) is constituted, to make the front end flex section 10A of catheter axle 10 towards the 1st direction (side in Fig. 1 and Fig. 2 shown in arrow A To) flexure, it is inserted through in the inside of catheter axle 10, the front end of the 1st behaviour's position 41 is connected and fixed on pouring member 20, after End is available for carrying out drawing operation；2nd behaviour position 42, its by twist thread (left-hand lay) constitutes, for make catheter axle 10 front end flexibility Part 10A is inserted through in the inside of catheter axle 10 towards the 2nd direction (direction in Fig. 1 and Fig. 2 shown in arrow B) flexure, the The front end of 2 behaviour's positions 42 is connected and fixed on pouring member 20, and rear end is available for carrying out drawing operation；Along the axle of catheter axle 10 To the leaf spring 60 of the yaw for the inside for being configured at flex section 10A；It is assemblied in the joystick 70 of the rear end of catheter axle 10； The ascending pipe 80 of perfusion liquid.
The front end flex section 10A of catheter axle 10 be by for formed tube chamber 11L~16L 6 lumens 11~16 with The multi-cavity structure body that the state being adhesively fixed by adhesive resin is configured.
In front end flex section 10A, across the central shaft (M of catheter axle 1010) be opposed to configure the interior of stream formation Pipe 51 (high rigidity part) and the inner tube 52 (high rigidity part) of stream formation, (the high rigidity portion of inner tube 51 of stream formation Part) there is central shaft (M on the 3rd imaginary plane P351), the inner tube 52 (high rigidity part) of stream formation is in the 3rd imagination There is central shaft (M on plane P352), the 3rd imaginary plane P3 is by by relative to the central shaft containing catheter axle 10 〔M10), be inserted through the 1st behaviour position 41 tube chamber 11L central shaft (M11) and supply the 2nd to grasp the tube chamber that position 42 is inserted through 12L central shaft (M12) the orthogonal planes of the 1st imaginary plane P1 and be the central shaft (M containing catheter axle 1010) the 2nd Imaginary plane P2, with the central shaft (M of catheter axle 1010) centered on rotated necessarily towards with the twisted direction identical direction twisted thread Angle (θ) (θ=45 ° in present embodiment.) formed by.
The electrode catheter 100 of present embodiment possesses：Catheter axle 10, be fixed on catheter axle 10 front end perfusion Part 20, be fixed on pouring member 20 front end preceding termination electrode 30, be assemblied in the front end flex section 10A of catheter axle 10 Ring electrode 32, the 1st behaviour's position 41 and the 2nd being inserted through in the inside of catheter axle 10 grasp position 42, are configured at drain The front end flex section 10A of pipe axle 10 leaf spring 60, be assemblied in catheter axle 10 rear end joystick 70, perfusion liquid Ascending pipe 80.
Constituting the front end area of the catheter axle 10 of electrode catheter 100 turns into front end flex section 10A.
Herein, " front end flex section " refers to that (the 1st behaviour's position 41 or the 2nd is operated by pulling operation behaviour position With line 42) rear end and the fore-end of (bending) catheter axle that can bend.
The external diameter of catheter axle 10 is usually 0.6~3mm, preferably 1.3~2.4mm.
The length of catheter axle 10 is usually 400~1500mm, preferably 700~1200mm.
Front end flex section 10A length such as not 30~300mm, preferably 50~250mm.
Joystick 70 is assembled in the rear end of catheter axle 10.The company with multiple terminals is provided with joystick 70 Device (diagram is omited) is connect, the wire of termination electrode 30 and 3 ring electrodes 32 before the terminal connection of connector is connected to (the wire 30L and wire 32L shown in Fig. 2).
In addition, joystick 70 is equipped with when bending the front end flex section 10A of catheter axle 10 for being led The knob 75 of pulling process.
Ascending pipe 80 shown in Fig. 1 is connected to catheter axle 10 via the inside of joystick 70, via the ascending pipe 80 The liquid of perfusion is supplied to the inside (inside of the inner tube 51 and 52 of stream formation) of catheter axle 10.
Herein, as " liquid ", normal saline solution can be exemplified.
The front end flex section 10A of catheter axle 10 is made up of multi-cavity structure body.
As shown in Fig. 2 front end flex section 10A includes：The inner side of lumen 11~16 is fixed by adhesive resin (core) portion 18, outside (epidermis) portion 19 being made up of the resin for coating inside portion 18, are constituting the lumen 11~16 of inside portion 18 Respective be internally formed tube chamber 11L~16L.
It is, for example, as the D hardness (hardness measured by hardometer (D types)) for the adhesive resin for constituting inside portion 18 Less than 40, preferably 25~35.
Constitute the modulus of elasticity in static bending (elasticity of flexure mould by locating tab assembly of JISK7171 of the adhesive resin of inside portion 18 Amount) it is, for example, below 80MPa, preferably 10~30MPa.
As the resin material for constituting inside portion 18, nylon resin, polyether block amide resin, polyurethane tree can be enumerated Fat, polyolefin-based resins etc..
It is formed at front end flex section 10A central shaft (Ms of the tube chamber 11L and 12L across catheter axle 1010) be opposed to Configuration, tube chamber 11L (lumen 11) central shaft (M11) and tube chamber 12L (lumen 12) central shaft (M12) flat positioned at the 1st imagination On the P1 of face.
It is used as tube chamber 11L and 12L internal diameter, more preferably preferably 0.15~0.50mm, 0.20~0.40mm.
As shown in Fig. 2 being inserted through front end flex section 10A for making catheter axle 10 in tube chamber 11L along shown in arrow A The 1st direction flexure the 1st behaviour position 41.1st behaviour's position 41 is inserted through in catheter in the way of it can be axially moveable The inside (the tube chamber 11L in the flex section 10A of front end) of axle 10.
The front end of 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 connects The knob 75 of joystick 70 is connected to, so as to for carrying out drawing operation.
In addition, being inserted through the 2nd of front end flex section 10A for making catheter axle 10 shown in arrow B in tube chamber 12L 2nd behaviour's position 42 of direction flexure.2nd behaviour's position 42 is inserted through in the way of it can be axially moveable in catheter axle 10 Internal (the tube chamber 12L in the flex section 10A of front end).
The front end of 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 connects The knob 75 of joystick 70 is connected to, so as to for carrying out drawing operation.
1st behaviour's behaviour's position 42 of position 41 and the 2nd is made up of twisting thread for left-hand lay respectively.
By using twisting thread as the 1st behaviour's behaviour's position 42 of position 41 and the 2nd, the front end of catheter axle 10 can be made Flex section 10A has a flexibility, and can improve by the 1st behaviour's behaviour's position 42 of position 41 and the 2nd it is respective after End is connected to the workability during knob 75 of joystick 70.
Twisting thread for the behaviour's position 42 of position 41 and the 2nd is grasped as constituting the 1st, for example can be many by doubling twisting Formed by the metal bare wire that stainless steel, Ni-Ti systems superelastic alloy etc. are constituted.
As constitute the 1st grasp position 41 and the 2nd grasp position 42 the external diameter twisted thread, for example, 0.10~ 0.30mm, preferably 0.15~0.25mm, one preferably is 0.20mm.
It is used as the external diameter for forming the 1st metal bare wire for grasping the behaviour's position 42 of position 41 and the 2nd, for example, 0.03 ~0.1mm, preferably 0.04~0.07mm.It is used as the number for constituting the bare wire twisted thread, for example, 7~19, preferably one Example is 7.
As shown in FIG. 2 and 3, in front end flex section 10A inside, edge is configured with the 2nd imaginary plane P2 and is led The axially extending leaf spring 60 of liquid pipe axle 10.
In the present embodiment, the 2nd imaginary plane P2 be the plane orthogonal relative to the 1st imaginary plane P1, and be containing Central shaft (the M of catheter axle 1010) imaginary plane.
By configuring leaf spring 60 in front end flex section 10A inside so that the easy edges of front end flex section 10A and leaf spring The vertical direction flexure of 60 plane (the 2nd imaginary plane P2).
It is formed at front end flex section 10A central shaft (Ms of the tube chamber 13L and 14L across catheter axle 1010) be opposed to Configuration, tube chamber 13L (lumen 13) central shaft (M13) and tube chamber 14L (lumen 14) central shaft (M14) are located at the 3rd imagination On plane P3.
In the present embodiment, the 3rd imaginary plane P3 is with the central shaft (M of catheter axle 10 by the 2nd imaginary plane P210〕 Centered on towards with constituting the 1st twisted direction identical direction twisted thread (in Fig. 2 for grasping the behaviour's position 42 of position 41 and the 2nd Counter clockwise direction) 45 ° of imaginary plane of rotation.
In addition, " the twisted direction twisted thread " is behaviour's position (the 1st behaviour behaviour of position 41 and the 2nd constituted that twisted thread by this Position 42) front twisted direction (direction of rotation of the bare wire of doubling twisting), when drawing operation behaviour position after It is the direction opposite with the direction (backtwisting direction) of the front rotation of behaviour's position during end.
It is used as tube chamber 13L and 14L internal diameter, more preferably preferably 0.25~1.00mm, 0.40~0.90mm.
(hereinafter referred to as " flowed as the inner tube 51 of high rigidity part stream formation as shown in Fig. 2 being inserted through in tube chamber 13L Road, which is formed, uses pipe 51 ".), central shaft (M51) consistent with tube chamber 13L central shaft (M13).
In addition, being inserted through (hereinafter referred to as " the stream shape of inner tube 52 of the stream formation as high rigidity part in tube chamber 14L Into with pipe 52 ".), central shaft (M52) consistent with tube chamber 14L central shaft (M14).
In liquid (normal saline solution) of the stream formation with the internal circulation perfusion of pipe 51 and 52.
By making liquid be circulated in the inside of stream formation pipe 51 and 52, it is possible to increase the sealing of perfusion liquid Property (effect for preventing liquid from being spilt from tube chamber).
As high rigidity part that is, the constituent material of stream formation pipe 51 and 52, polyimides can be used, gathered The resin material such as ether ether ketone (PEEK) and nylon 11, can also use the gold of stainless steel and Ni-Ti systems superelastic alloy etc. Belong to material.
It is used as the composition stream formation D hardness of the resin of pipe 51 and 52, for example, more than 72, preferably 77~95.
As constitute the stream formation resin of pipe 51 and 52 the modulus of elasticity in static bending, for example, 1,500~19, 000MPa, preferably 2,000~7,000MPa.
As internal diameter of the stream formation with pipe 51 and 52, preferably 0.20~0.95mm, more preferably 0.30~ 0.80mm。
As wall thickness of the stream formation with pipe 51 and 52, usually 10~100 μm, preferably 20~80 μm.
Respective central shaft (M51) and (M52) be located at respectively stream formation on the 3rd imaginary plane P3 with pipe 51 and 52 across catheter axle 10 central shaft (M10) configuration is opposed to, thus the front end flex section 10A of catheter axle 10 is formed as The mode close with there is leaf spring on the 3rd imaginary plane P3.
That is, make front end flex section 10A along the 3rd imaginary plane P3 bend when resistance be significantly greater than and make the front end flexible Resistance when part 10A is along perpendicular to the flexure of the 3rd imaginary plane P3 direction, front end flex section 10A is difficult flat along the 3rd imagination Face P3 is bent, and is easily bent along the direction vertical with the 3rd imaginary plane P3.
It is formed at front end flex section 10A central shaft (Ms of the tube chamber 15L and 16L across catheter axle 1010) be opposed to Configuration, tube chamber 15L (lumen 15) central shaft (M15) and tube chamber 16L (lumen 16) central shaft (M16) are located at the 4th imagination On plane P4.
In the present embodiment, the 4th imaginary plane P4 be by by the 2nd imaginary plane P2 with the central shaft of catheter axle 10 〔M10) centered on, grasp the twisted direction (sth. made by twisting of front twisted thread that position 41 and the 2nd grasps position 42 towards with constituting the 1st Turning direction) opposite direction (clockwise direction in Fig. 2) rotates 45 ° of imaginary plane.
Tube chamber 15L and 16L internal diameter are identical with tube chamber 13L and 14L internal diameter.
As shown in Fig. 2 the wire 32L for the ring electrode 32 being inserted through in tube chamber 15L shown in Fig. 1, before tube chamber 16L is inserted through The wire 30L of termination electrode 30.
The lumen 11~16 for forming tube chamber 11L~16L is made up of resin.
As the resin for constituting lumen 11~16, preferably with the adhesive resin with constituting inside portion 18 on an equal basis or more High rigidity (the D hardness modulus of elasticity in static bending).
As the D hardness for the resin for constituting lumen 11~16, such as 80 is following, and preferably 50~75.
As constitute lumen 11~16 resin the modulus of elasticity in static bending, for example, 15~1,000MPa, preferably 100~ 800MPa。
It is used as the wall thickness of lumen 11~16, preferably usually 10~50 μm, 20~40 μm.
As the resin material of lumen 11~16 is constituted, as long as possessing above-mentioned stiffness conditions and can be shaped i.e. with tubulose Can, it is not particularly limited, for example, it may be fluororesin, the nylon resin of the grade of nylon 11/nylon 12, polyurethane resin, polyolefin tree Fat etc., but the sight of the lubricity (the mobile easiness of the part being inserted through of behaviour's position etc.) for (tube chamber) in optimization pipe Point, is preferably made up of fluororesin.
Specifically, polytetrafluoroethylene (PTFE) (PTFE), tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer can be illustrated (PFA), perfluoroethylene-propylene copolymer (FEP), ethylene-tetrafluoroethylene copolymer (ETFE) etc..
Front end flex section 10A outside portion 19 is made up of the resin material for coating inside portion 18.As shown in figure 3, this is outer Sidepiece 19 constitutes front end flex section 10A, and compared to front end flex section 10A sides rearward, is constituting (the pipe of catheter axle 10 Part).
Herein, as constitute front end flex section 10A outside portion 19 resin D hardness, for example, 35~63.
(the front end flex section 10A structure division and than front end flex section 10A sides rearward in addition, outside portion 19 Part) can be made up of the pipe of identical physical property vertically, but be preferably rigidity (hardness) towards rear end side segmenting Rise.
It is used as 3~15% or so of the wall thickness of outside portion 19, the preferably external diameter of catheter axle 10.
, can be with torque polyamide thermoplastic based elastomers as the resin material for constituting outside portion 19, but be preferably poly- Ether block amide copolymer.
As shown in figure 3, the part of the ratio front end flex section 10A of catheter axle 10 sides rearward is by hollow duct member (equivalent to the single-lumen structure that is formed of duct member of outside portion 19) is constituted.
In addition, having coil pipe 54 in the mounted inside compared to front end flex section 10A parts of side rearward.
The coil pipe 54 bears to act on the by the way that the section straight angle or the wire coil coiled of circle are constituted into pipe The reaction force of the traction force of 1 behaviour's behaviour's position 42 of position 41 or the 2nd.
Thus, when to the 1st behaviour's behaviour's effect traction force of position 42 of position 41 or the 2nd, it can suppress to assemble the disk Part (than the part of front end flex section 10A sides rearward) flexure of the catheter axle 10 of pipe 54.
Be connected pouring member 20 in the front end of catheter axle 10.
Periphery of the pouring member 20 along pouring member 20 it is equiangularly spaced be configured to the surface of termination electrode 30 forward (perfusion) is sprayed to fill from multiple (such as 8) of the liquid of catheter axle 10 (inside of stream formation pipe 51 and 52) supply Note (is illustrated and omited) with opening.
Termination electrode 30 before being connected in the front end of pouring member 20.
In addition, being equipped with ring electrode 32 in the front end flex section 10A of catheter axle 10.
As preceding termination electrode 30 and the fixing means of ring electrode 32, it is not particularly limited, such as can enumerate bonding Method.
Preceding termination electrode 30 and ring electrode 32 are such as the good metal of the electrical conductance as aluminium, copper, stainless steel, gold, platinum Constitute.In addition, in order to have good radiography relative to X-ray, being preferably made up of platinum etc..
As preceding termination electrode 30 and the external diameter of ring electrode 32, thing is particularly limited to, but it is preferred that with catheter axle 10 External diameter is equal extent.
By the knob 75 of the joystick 70 of the electrode catheter 100 that makes composition present embodiment towards the A1 shown in Fig. 1 Direction rotates, and the drawing of the 1st behaviour's position 41 is operated.
The 1st behaviour position 41 drawing operation when (during the deflecting operation of front end), by left-hand lay twist thread constitute the 1st operation Rotated with the front of line 41 towards the backtwisting direction (direction (clockwise direction) shown in the arrow r1 in Fig. 2) twisted thread.
Herein, because the front end of the 1st behaviour's position 41 is connected and fixed on pouring member 20, therefore used from the 1st operation The rotation torque of line 41 is transmitted to pouring member 20.
Thus, it is supposed that being managed when not being inserted through stream formation respectively in front end flex section 10A tube chamber 13L and 14L High rigidity part in the case of, (the front end flex section of catheter axle 10 that pouring member 20 and pouring member 20 are fixed Front 10A) is by with the central shaft (M of catheter axle 1010) centered on, it is identical towards the direction of rotation that position 41 is grasped with the 1st Direction (direction (clockwise direction) in Fig. 2 shown in arrow R) rotation.On the other hand, front end flex section 10A rear end side It can not be rotated freely as front, thus, front end flex section 10A is reversed in the direction shown in arrow R, and such as court With the shown direction flexures of arrow A ' in figure.
However, in the electrode catheter 100 of present embodiment, height is used as by being inserted through respectively in tube chamber 13L and 14L The stream formation of rigid element is with pipe 51 and 52 (across central shaft (M10) be opposed to configuration on the 3rd imaginary plane P3), from And form the mode close with there is leaf spring on the 3rd imaginary plane P3 and (in such mode, be made up of using single line In the case of 1st behaviour's position, front end flex section 10A is counterclockwise reversed, and for example along along Fig. 2 shown in arrow A " Direction flexure), therefore the 1st behaviour position 41 drawing operation when, can suppress and prevent front end flex section 10A along arrow Direction (clockwise direction) torsion shown in head R, as a result, the front end flex section 10A of no torsion can be made along the 1st imaginary plane The 1st direction flexure (deflecting front end) shown in P1 towards arrow A.
In addition, the knob 75 of the joystick 70 of electrode catheter 100 by making composition present embodiment is along shown in Fig. 1 B1 directions rotate, carry out to the 2nd behaviour position 42 drawing operate.
In the drawing operation of the 2nd behaviour's position 42, by the front court of the 2nd behaviour's position 42 constituted of twisting thread of left-hand lay Backtwisting direction (direction (clockwise direction) shown in the arrow r2 in Fig. 2) rotation twisted thread.
Herein, because the front end of the 2nd behaviour's position 42 is connected and fixed on pouring member 20, therefore used from the 2nd operation The rotation torque of line 42 is transmitted to pouring member 20.
Thus, it is supposed that being managed when not being inserted through stream formation respectively in front end flex section 10A tube chamber 13L and 14L High rigidity part in the case of, (the front end flex section of catheter axle 10 that pouring member 20 and pouring member 20 are fixed Front 10A) is by with the central shaft (M of catheter axle 1010) centered on, it is identical towards the direction of rotation that position 42 is grasped with the 2nd Direction (direction (clockwise direction) in Fig. 2 shown in arrow R) rotation.On the other hand, front end flex section 10A rear end side It can not be rotated freely as front, thus, front end flex section 10A is reversed in the direction shown in arrow R, and such as court With the shown direction flexures of arrow B ' in figure.
However, in the electrode catheter 100 of present embodiment, height is used as by being inserted through respectively in tube chamber 13L and 14L The stream formation of rigid element is with pipe 51 and 52 (across central shaft (M10) be opposed to configuration on the 3rd imaginary plane P3), from And form the mode close with there is leaf spring on the 3rd imaginary plane P3 and (in such mode, be made up of using single line In the case of 2nd behaviour's position, front end flex section 10A is counterclockwise reversed, and for example along along Fig. 2 shown in arrow B " Direction flexure), therefore the 2nd behaviour position 42 drawing operation when, can suppress and prevent front end flex section 10A along arrow Direction (clockwise direction) shown in head R is reversed, as a result, the front end flex section 10A of no torsion can be made flat along the 1st imagination The 2nd direction flexure (deflecting front end) shown in face P1 towards arrow B.
In addition, by being pivoted joystick 70, can freely set relative in the case where being inserted into endoceliac state In the 1st direction of electrode catheter 100 and the 2nd direction direction.
According to the electrode catheter 100 of present embodiment, although the 1st behaviour's position 41 and the 2nd grasps position 42 by twisting with the fingers Line is constituted, and the rear end of the behaviour's position 42 of position 41 or the 2nd can be but grasped by pulling operation the 1st and makes front end flex section 10A shape changes in actual identical plane (the 1st imaginary plane P1), reliably along the direction based on operating personnel's will (along the 1st imaginary plane P1 towards the 1st direction or the 2nd direction) flexure.
<2nd embodiment>
The electrode catheter 200 of present embodiment shown in Fig. 4 and Fig. 5 possesses：With front end flex section 210A's Catheter axle 210；It is fixed on the preceding termination electrode 230 of the front end of the catheter axle 210；Scratch the front end for being assemblied in catheter axle 210 Property part 210A 3 ring electrodes 232；1st behaviour position 241, its by twist thread (left-hand lay) constitute, to make catheter axle 210 Front end flex section 210A towards the 1st direction (direction in Fig. 4 and Fig. 5 shown in arrow A) flexure, be inserted through in catheter axle 210 inside, termination electrode 230 before the front end of the 1st behaviour's position 241 is connected and fixed on, rear end is available for carrying out drawing operation；The 2 behaviour's positions 242, its by twist thread (left-hand lay) constitutes, to make the front end flex section 210A of catheter axle 210 (scheme towards the 2nd direction Direction in 4 and Fig. 5 shown in arrow B) flexure, it is inserted through in the inside of catheter axle 210, the front end of the 2nd behaviour's position 242 Termination electrode 230 before being connected and fixed on, rear end is available for carrying out drawing operation；Along the axial arrangement of catheter axle 210 in flexible portion Divide the leaf spring 260 of 210A inside；It is assemblied in the joystick 270 of the rear end of catheter axle 210.
The front end flex section 210A of catheter axle 210 be by for form tube chamber 211L~216L 6 lumens 211~ The 216 multi-cavity structure bodies configured with the state fixed by adhesive resin.
In front end flex section 210A, across the central shaft (M of catheter axle 210210) be opposed to configure high rigidity lumen 213 (high rigidity parts) and high rigidity lumen 214 (high rigidity part), high rigidity lumen 213 (high rigidity part) is in the 3rd imagination There is central shaft (M on plane P3213), high rigidity lumen 214 (high rigidity part) has center on the 3rd imaginary plane P3 Axle (M214), the 3rd imaginary plane P3 is by by relative to the central shaft (M containing catheter axle 210210), for the 1st behaviour position The 241 tube chamber 211L being inserted through central shaft (M211) and for the 2nd central shaft (M for grasping the tube chamber 212L that position 242 is inserted through212〕 The orthogonal planes of the 1st imaginary plane P1 that is, central shaft (M containing catheter axle 210210) the 2nd imaginary plane P2 to lead Central shaft (the M of liquid pipe axle 210210) centered on rotated a certain angle (θ) (this towards with the twisted direction identical direction twisted thread θ=45 ° in embodiment.) formed by.
The electrode catheter 200 of present embodiment possesses：Catheter axle 210, it is fixed on before the front end of catheter axle 210 Termination electrode 230, be assemblied in catheter axle 210 front end flex section 210A ring electrode 232, be inserted through in catheter axle 210 Inside the 1st behaviour behaviour of position 241 and the 2nd position 242, be configured at the front end flex section 210A of catheter axle 210 Leaf spring 260, be assemblied in catheter axle 210 rear end joystick 270.
The front end area for constituting the catheter axle 210 of electrode catheter 200 is front end flex section 210A.
Joystick 270 is assembled in the rear end of catheter axle 210.
Joystick 270 is the identical structure of joystick 70 with constituting the electrode catheter 100 of the 1st embodiment, What the drawing when front end flex section 210A being equipped with joystick 270 for entering to exercise catheter axle 210 is bent was operated Knob 275.
The front end flex section 210A of catheter axle 210 is made up of multi-cavity structure body.
As shown in figure 5, front end flex section 210A includes：Fixed by adhesive resin in lumen 211~216 Side (core) portion 218, outside (epidermis) portion 219 being made up of the resin for coating inside portion 218, are constituting the lumen of inside portion 218 211~216 respective is internally formed tube chamber 211L~216L.
As the physical property and species of the resin for constituting inside portion 218 and outside portion 219, with constituting the 1st embodiment Front end flex section 10A inside portion 18 and outside portion 19 resin it is identical.
It is formed at front end flex section 210A central shaft (Ms of the tube chamber 211L and 212L across catheter axle 210210〕 It is opposed to configuration, tube chamber 211L (lumen 211) central shaft (M211) and tube chamber 212L (lumen 212) central shaft (M212) position In on the 1st imaginary plane P1.
As shown in figure 5, being inserted through in tube chamber 211L for making the front end flex section 210A of catheter axle 210 towards arrow A 1st behaviour's position 241 of shown the 1st direction flexure.In addition, being inserted through in tube chamber 212L for making before catheter axle 210 Hold the 2nd behaviour's position 242 of the 2nd direction flexure shown in flex section 210A towards arrow B.
In addition, in front end flex section 210A inside, the axle along catheter axle 210 is configured on the 2nd imaginary plane P2 To the leaf spring 260 of extension.
In the present embodiment, the 2nd imaginary plane P2 is the plane orthogonal relative to the 1st imaginary plane P1, for containing leading Central shaft (the M of liquid pipe axle 210210) imaginary plane.
1st behaviour's position 241 and the 2nd behaviour's position 242 with the 1st of the 1st embodiment the by grasping position 41 and the 2nd Behaviour the identical of position 42 twist thread (left-hand lay) composition.The front end of 1st behaviour's behaviour's position 242 of position 241 and the 2nd is connected respectively Termination electrode 230 before being fixed on, their rear end is connected to the knob 275 of joystick 270, thus, it is possible to carry out drawing behaviour Make.
It is formed at front end flex section 210A central shaft (Ms of the tube chamber 213L and 214L across catheter axle 210210〕 It is opposed to configuration, tube chamber 213L (high rigidity lumen 213) central shaft (M213) and tube chamber 214L (high rigidity lumen 214) Central shaft (M214) be located 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 of catheter axle 210 〔M210) centered on, towards with constitute the 1st grasp position 241 and the 2nd behaviour position 242 the twisted direction twisted thread (front Twisted direction) identical direction (counter clockwise direction in Fig. 5) rotate 45 ° of imaginary plane.
It is formed at front end flex section 210A central shaft (Ms of the tube chamber 215L and 216L across catheter axle 210210〕 It is opposed to configuration, tube chamber 215L (lumen 215) central shaft (M215) and tube chamber 216L (lumen 216) central shaft (M216) On the 4th imaginary plane P4.
In the present embodiment, the 4th imaginary plane P4 is with the central shaft of catheter axle 210 by the 2nd imaginary plane P2 〔M210) centered on, towards with constitute the 1st grasp position 241 and the 2nd behaviour position 242 the twisted direction twisted thread (front Twisted direction) opposite direction (clockwise direction in Fig. 5) rotates 45 ° of imaginary plane.
As shown in figure 5, the wire 232L for the ring electrode 232 being inserted through in tube chamber 215L shown in Fig. 1, in tube chamber 216L The wire 230L of termination electrode 230 before being inserted through.
The lumen 211~216 for forming tube chamber 211L~216L is made up of resin.
As the resin for constituting lumen 211,212,215 and 216, preferably with the adhesive with constituting inside portion 218 The equal or bigger rigidity of resin.
As constitute lumen 211,212,215 and 216 resin D hardness, for example, less than 80, preferably 50~ 75。
As constitute lumen 211,212,215 and 216 resin the modulus of elasticity in static bending, for example, 15~1, 000MPa, preferably 100~800MPa.
As the resin material for constituting lumen 211,212,215 and 216, the 1st embodiment can be enumerated and constituted The identical resin of the resin of lumen 11~16.
Form tube chamber 213L high rigidity lumen 213 and form tube chamber 214L high rigidity lumen 214 for by rigidly comparing Adhesive resin and constitute the high rigidity that the high resin of resin of other lumens (lumen 211,212,215 and 216) is constituted Part.
As the resin material for constituting high rigidity lumen 213 and 214, polyimides, polyether-ether-ketone can be enumerated And nylon 11 etc. (PEEK).
Constitute tree of the D hardness than constituting lumen 211,212,215 and 216 of the resin of high rigidity lumen 213 and 214 The D hardness of fat is high, for example, more than 72, preferably 77~95.
As constitute high rigidity lumen 213 and 214 resin the modulus of elasticity in static bending, for example, 1,500~19, 000MPa, preferably 2,000~7,000MPa.
It is used as the wall thickness of lumen 211~216, preferably usually 20~60 μm, 30~50 μm.
By by respective central shaft (M213) and (M214) be located at the 3rd imaginary plane P3 on high rigidity lumen 213 with And 214 across catheter axle 210 central shaft (M210) it is opposed to configuration so that the front end flex section 210A of catheter axle 210 As the mode close with there is leaf spring on the 3rd imaginary plane P3.
That is, being significantly greater than resistance during front end flex section 210A flexures along the 3rd imaginary plane P3 makes the front end flexible Part 210A is difficult along the 3rd imagination along the resistance during direction flexure vertical with the 3rd imaginary plane P3, front end flex section 210A Plane P3 is bent, and is easily bent along the direction vertical with the 3rd imaginary plane P3.
In the electrode catheter 200 of present embodiment, the ratio front end flex section 210A of catheter axle 210 side rearward Part, it is identical with the electrode catheter 100 of the 1st embodiment, by the hollow duct member (pipe portion suitable with outside portion 219 The single-lumen structure that part is formed) constitute.In addition, in the mounted inside than front end flex section 210A parts of side rearward Coil pipe.
By the knob 275 of the joystick 270 of the electrode catheter 200 that makes composition present embodiment along shown in Fig. 4 A1 directions rotate, and carry out the 1st drawing operation for grasping position 241.In the drawing operation of the 1st behaviour's position 241, by left-hand lay The front of 1st behaviour's position 241 of composition of twisting thread rotates in Fig. 5 clockwise towards the backtwisting direction () twisted thread.
Herein, termination electrode 230 before being connected and fixed on due to the front end of the 1st behaviour's position 241, therefore from the 1st operation With the rotation torque of line 241, termination electrode 230 is transmitted forward.
Thus, it is supposed that the lumen for forming tube chamber 213L and 214L is not high rigidity part, and with lumen 215 and 216 it is equal it is rigid in the case of, (front end is flexible for the catheter axle 210 that preceding termination electrode 230 and preceding termination electrode 230 are fixed Part 210A) front by with the central shaft (M of catheter axle 210210) centered on, towards the rotation with the 1st behaviour's position 241 Direction identical direction (direction (clockwise direction) in Fig. 5 shown in arrow R) rotates.On the other hand, front end flex section 210A rear end side is rotated freely like that without image of Buddha front, thus, and front end flex section 210A is turned round in the direction shown in arrow R Turn, and the direction flexure shown for example towards arrow A ' in same figure.
However, in the electrode catheter 200 of present embodiment, tube chamber 213L and 214L are respectively by high rigidity lumen 213 and 214 (high rigidity parts) formation, is formed as the mode close with there is leaf spring on the 3rd imaginary plane P3 (at this In the mode of sample, in the case of using the 1st behaviour's position is constituted by single line, front end flex section 210A is counterclockwise turned round Turn, and for example towards the direction flexure in Fig. 5 shown in arrow A "), therefore in the drawing operation of the 1st behaviour's position 241, can Suppress and prevent front end flex section 210A from being reversed towards the direction (clockwise direction) shown in arrow R, as a result, no torsion can be made Front end flex section 210A along the 1st imaginary plane P1 towards shown in arrow A the 1st direction bend (deflecting front end).
In addition, the knob 275 of the joystick 270 of electrode catheter 200 by making composition present embodiment is along Fig. 4 institutes The B1 directions shown rotate, and the drawing of the 2nd behaviour's position 242 is operated.
In the drawing operation of the 2nd behaviour's position 242, by the front of the 2nd behaviour's position 242 constituted of twisting thread of left-hand lay Towards backtwisting the direction () rotation twisted thread in Fig. 5 clockwise.
Herein, termination electrode 230 before being connected and fixed on due to the front end of the 2nd behaviour's position 242, therefore from the 2nd operation Transmitted with the rotation torque of line 242 by termination electrode 230 forward.
Thus, it is supposed that when form tube chamber 213L and 214L lumen not for high rigidity part have with lumen 215 with And 216 it is equal it is rigid in the case of, the catheter axle 210 that preceding termination electrode 230 and preceding termination electrode 230 are fixed (is scratched front end Property part 210A) front by with the central shaft (M of catheter axle 210210) centered on, towards the rotation with the 2nd behaviour's position 242 Turn direction identical direction (direction (clockwise direction) in Fig. 5 shown in arrow R) rotation.
On the other hand, front end flex section 210A rear end side is rotated freely like that without image of Buddha front, thus, and front end is scratched Property part 210A towards arrow R shown in direction reverse, and for example towards arrow B ' in same figure it is shown direction flexure.
However, in the electrode catheter 200 of present embodiment, tube chamber 213L and 214L are respectively by high rigidity lumen 213 and 214 (high rigidity parts) formation, as the mode close with there is leaf spring on the 3rd imaginary plane P3 (so Mode in, when using by single line constitute the 2nd behaviour position in the case of, front end flex section 210A is counterclockwise turned round Turn, and for example towards the direction flexure in Fig. 5 shown in arrow B "), therefore in the drawing operation of the 2nd behaviour's position 242, can Suppress and prevent front end flex section 210A from being reversed towards the direction (clockwise direction) shown in arrow R, as a result, no torsion can be made The front end flex section 210A turned bends (deflecting front end) along the 1st imaginary plane P1 towards the 2nd direction shown in arrow B.
According to the electrode catheter 200 of present embodiment, although the 1st behaviour position 241 and the 2nd behaviour position 242 by Twist thread composition, but can make front end flexible portion by pulling operation the 1st and grasping position 241 or the 2nd and grasp the rear end of position 242 210A shape is divided to change in actual identical plane (the 1st imaginary plane P1), reliably along based on operating personnel's will Direction (the 1st direction or the 2nd direction) is bent.
<3rd embodiment>
Possess figure 6 illustrates the electrode catheter 300 of the present embodiment of the cross section shape of front end flex section：Tool There is front end flex section 310A catheter axle 310；It is fixed on the preceding termination electrode of the front end of the catheter axle 310；It is assemblied in and leads The front end flex section 310A of liquid pipe axle 310 3 ring electrodes；1st behaviour position 341, its by twist thread (left-hand lay) constitute, be The front end flex section 310A of catheter axle 310 is bent towards the 1st direction (direction in Fig. 6 shown in arrow A), be inserted through in leading The inside of liquid pipe axle 310, the front end of the 1st behaviour's position 341 is connected and fixed on preceding termination electrode, and rear end is available for carrying out drawing behaviour Make；2nd behaviour's position 342, its by twist thread (left-hand lay) constitute, to make the front end flex section 310A of catheter axle 310 towards the 2nd side Bend, be inserted through in the inside of catheter axle 310, the front end quilt of the 2nd behaviour's position 342 to (direction in Fig. 6 shown in arrow B) Preceding termination electrode is connected and fixed on, rear end is available for carrying out drawing operation；Along the axial arrangement of catheter axle 310 in flex section 310A Inside leaf spring 360；It is assemblied in the joystick of the rear end of catheter axle 310.
The front end flex section 310A of catheter axle 310 be by for form tube chamber 311L~316L 6 lumens 311~ The 316 multi-cavity structure bodies configured with the state fixed by adhesive resin 318.
In front end flex section 310A, shaft-like rigid body 355 (high rigidity part) and the shaft-like (Gao Gang of rigid body 356 Property part) with the state for the composition resin (adhesive resin 318) for being embedded in catheter axle 310, across catheter axle 310 Central shaft (M310) configuration is opposed to, shaft-like rigid body 355 (high rigidity part) has central shaft on the 3rd imaginary plane P3 〔M355), shaft-like rigid body 356 (high rigidity part) has central shaft (M on the 3rd imaginary plane P3356〕.3rd imagination is flat Face P3 is by by relative to the central shaft (M containing catheter axle 310310), for the 1st tube chamber 311L that is inserted through of behaviour's position 341 Central shaft (M311) and for the 2nd central shaft (M for grasping the tube chamber 312L that position 342 is inserted through312) the 1st imaginary plane P1 just The plane of friendship that is, the central shaft (M of catheter axle 310310) the 2nd imaginary plane P2 with the central shaft (M of catheter axle 310310〕 Centered on rotated a certain angle (θ) (θ=45 ° in present embodiment towards with the twisted direction identical direction twisted thread.) and shape Into.
The electrode catheter 300 of present embodiment possesses：Catheter axle 310, it is fixed on before the front end of catheter axle 310 Termination electrode, be assemblied in catheter axle 310 front end flex section 310A ring electrode, be inserted through in the inside of catheter axle 310 The 1st behaviour position 341 and the 2nd behaviour position 342, be configured at catheter axle 310 front end flex section 310A leaf spring 360th, it is assemblied in the joystick of the rear end of catheter axle 310.
In addition, the electrode of the 2nd embodiment shown in the face shaping and Fig. 4 of the electrode catheter 300 of present embodiment Catheter 200 is identical.
In addition, the preceding termination electrode, ring electrode and the joystick that constitute electrode catheter 300 are and the 2nd embodiment In preceding termination electrode 230, ring electrode 232 and the identical structure of joystick 270.
The front end area for constituting the catheter axle 310 of electrode catheter 300 is front end flex section 310A.
What the front end flex section 310A of catheter axle 310 was lumen 311~316 to fix by adhesive resin 318 The multi-cavity structure body of state configuration, respective in these lumens 311~316 is internally formed tube chamber 311L~316L.
It is formed at front end flex section 310A central shaft (Ms of the tube chamber 311L and 312L across catheter axle 310310〕 It is opposed to configuration, tube chamber 311L (lumen 311) central shaft (M311) and tube chamber 312L (lumen 312) central shaft (M312) position In on the 1st imaginary plane P1.
It is inserted through in tube chamber 311L for making the front end flex section 310A of catheter axle 310 towards the 1st side shown in arrow A Position 341 is grasped to the 1st of flexure the.In addition, being inserted through in tube chamber 312L for making the front end flex section of catheter axle 310 2nd behaviour's position 342 of the 2nd direction flexure shown in 310A towards arrow B.
In addition, in front end flex section 310A inside, the axle along catheter axle 310 is configured on the 2nd imaginary plane P2 To the leaf spring 360 of extension.
In the present embodiment, the 2nd imaginary plane P2 is the plane orthogonal relative to the 1st imaginary plane P1, for containing leading Central shaft (the M of liquid pipe axle 310310) imaginary plane.
The 1st behaviour's position 41 and the 2nd in 1st behaviour's behaviour's embodiment of position 342 and the 1st of position 341 and the 2nd Behaviour position 42 it is identical by twist thread (left-hand lay) constitute.The front end of 1st behaviour's behaviour's position 342 of position 341 and the 2nd is connected respectively Preceding termination electrode is fixed on, respective rear end is available for carrying out drawing operation by being connected to the knob of joystick respectively.
It is formed at front end flex section 310A central shaft (Ms of the tube chamber 313L and 314L across catheter axle 310310〕 It is opposed to configuration, tube chamber 313L (lumen 313) central shaft (M313) and tube chamber 314L (lumen 314) central shaft (M314) position In 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 center of catheter axle 310 Axle (M310) centered on, grasp the twisted direction (front twisted thread that position 341 and the 2nd grasps position 342 towards with constituting the 1st Twisted direction) 45 ° of equidirectional (in Fig. 6 counterclockwise) rotation imaginary plane.
It is formed at front end flex section 310A central shaft (Ms of the tube chamber 315L and 316L across catheter axle 310310〕 It is opposed to configuration, tube chamber 315L (lumen 315) central shaft (M315) and tube chamber 316L (lumen 316) central shaft (M316) On the 4th imaginary plane P4.
In the present embodiment, the 4th imaginary plane P4 is with the central shaft of catheter axle 310 by the 2nd imaginary plane P2 〔M310) centered on, towards with constitute the 1st grasp position 241 and the 2nd behaviour position 242 the twisted direction twisted thread (front Twisted direction) opposite direction () 45 ° of rotation in Fig. 6 clockwise imaginary plane.
As shown in fig. 6, the wire 332L for the ring electrode being inserted through in tube chamber 315L shown in Fig. 1, is inserted in tube chamber 316L The wire 330L of termination electrode before wearing.
The lumen 311~316 for forming tube chamber 311L~316L is made up of resin.
As the resin for constituting lumen 311~316, preferably with the rigidity equal or bigger with adhesive resin 318.
It is used as the D hardness for the resin for constituting lumen 311~316, for example, less than 80, preferably 50~75.
It is used as the modulus of elasticity in static bending for the resin for constituting lumen 311~316, for example, 15~1,000MPa, preferably 100 ~800MPa.
As the resin material for constituting lumen 311~316, can enumerate and constitute lumen 11 in the 1st embodiment~ 16 resin identical resins.
There is central shaft (M on the 3rd imaginary plane P3 and in tube chamber 313L outer circumferential side355) shaft-like rigid body 355 (high rigidity part) in tube chamber 314L outer circumferential side with the 3rd imaginary plane P3 and having central shaft (M356) it is shaft-like firm Property body 356 (high rigidity part), be embedded in catheter axle 310 composition resin (adhesive resin 318) state across Central shaft (the M of catheter axle 310310) it is opposed to front end flex section 310A of the configuration in catheter axle 310.
Herein, rigid body 355 and 356 is made up of pole spring, and pole spring is set by polyimides, polyether-ether-ketone and nylon 11 etc. The metal material of fat material and stainless steel and Ni-Ti systems superelastic alloy etc. is constituted.
Respective central shaft (M355) and (M356) it is located at rigid body 355 and 356 on the 3rd imaginary plane P3 across leading Central shaft (the M of liquid pipe axle 310310) be opposed to match somebody with somebody, thus the front end flex section 310A of catheter axle 310 turn into the 3rd There is the close mode of leaf spring on imaginary plane P3.
That is, make front end flex section 310A along the 3rd imaginary plane P3 bend when resistance be significantly greater than this and make front end flexible Part 310A is difficult along the 3rd imagination along the resistance during direction flexure vertical with the 3rd imaginary plane P3, front end flex section 310A Plane P3 is bent, and is easily bent along the 4th imaginary plane P4 towards the direction vertical with the 3rd imaginary plane P3.
Constitute electrode catheter 300 the 1st behaviour position 341 drawing operation when, by left-hand lay twist thread constitute the 1st The front for grasping position 341 rotates in Fig. 6 clockwise towards the backtwisting direction () twisted thread.
Herein, because the front end of the 1st behaviour's position 341 is connected and fixed on preceding termination electrode, therefore from the 1st behaviour's position 341 rotation torque forward end electrodes transfer.Thus, it is supposed that in the case that above-mentioned rigid body is not opposed to configuration, front end electricity The front for the catheter axle 310 (front end flex section 310A) that pole and preceding termination electrode are fixed is by with catheter axle 310 Central shaft (M310) centered on, towards the direction of rotation identical direction (direction in Fig. 6 shown in arrow R with the 1st behaviour's position 341 (turning clockwise)) rotation.On the other hand, front end flex section 310A rear end side can not be rotated freely as front, Thus, the direction shown in front end flex section 310A towards arrow R is reversed, and is for example scratched towards the shown directions of arrow A ' in same figure It is bent.
However, in the electrode catheter 300 of present embodiment, respective central shaft (M355) and (M356) it is located at the 3rd Central shaft (the M of rigid body 355 and 356 (high rigidity part) on imaginary plane P3 across catheter axle 310310) opposed Ground is configured, as the mode close with there is leaf spring on the 3rd imaginary plane P3 (in such mode, using by list In the case that line constitutes the 1st behaviour's position, front end flex section 310A is reversed towards rotate counterclockwise, and for example towards arrow in Fig. 6 Direction flexure shown in head A "), therefore in the drawing operation of the 1st behaviour's position 341, can suppress and prevent front end flexible portion The direction (clockwise direction) shown in 310A towards arrow R is divided to reverse, as a result, the front end flex section 310A edges of no torsion can be made 1st imaginary plane P1 bends (deflecting front end) towards the 1st direction shown in arrow A.
In addition, when constituting the drawing operation of the 2nd behaviour's position 342 of electrode catheter 300, the composition of twisting thread of left-hand lay The front of 2nd behaviour's position 342 rotates in Fig. 6 clockwise towards the backtwisting direction () twisted thread.
Herein, because the front end of the 2nd behaviour's position 342 is connected and fixed on preceding termination electrode, therefore from the 2nd behaviour's position 342 rotation torque termination electrode transmission facing forward.
Thus, it is supposed that in the case that above-mentioned rigid body is not opposed to configuration, preceding termination electrode and preceding termination electrode are consolidated The front of fixed catheter axle 310 (front end flex section 310A) is by with the central shaft (M of catheter axle 310310) centered on, Rotated towards the direction of rotation identical direction (direction (clockwise direction) in Fig. 6 shown in arrow R) with the 2nd behaviour's position 342.
On the other hand, front end flex section 310A rear end side can not be rotated freely as front, thus, and front end is scratched Property part 310A towards arrow R shown in direction reverse, and for example towards arrow B ' in same figure it is shown direction flexure.
However, in the electrode catheter 300 of present embodiment, respective central shaft (M355) and (M356) it is located at the 3rd Central shaft (the M of rigid body 355 and 356 (high rigidity part) on imaginary plane P3 across catheter axle 310310) opposed Ground is configured, as the mode close with there is leaf spring on the 3rd imaginary plane P3 (in such mode, when using by list In the case that line constitutes the 2nd behaviour's position, front end flex section 310A is reversed towards rotate counterclockwise, and for example towards arrow in Fig. 6 Direction flexure shown in head B "), therefore in the drawing operation of the 2nd behaviour's position 342, can suppress and prevent front end flexible portion The direction (clockwise direction) shown in 310A towards arrow R is divided to reverse, as a result, the front end flex section 310A of no torsion can be made Is bent along the 1st imaginary plane P1 towards the 2nd direction shown in arrow B
According to the electrode catheter 300 of present embodiment, although the 1st behaviour position 341 and the 2nd behaviour position 342 by Twist thread composition, but can make front end flexible portion by pulling operation the 1st and grasping position 341 or the 2nd and grasp the rear end of position 342 310A shape is divided to change in actual identical plane (the 1st imaginary plane P1), reliably along based on operating personnel's will Direction (the 1st direction or the 2nd direction) is bent.
<4th embodiment>
Possess figure 7 illustrates the electrode catheter 400 of the present embodiment of the cross section shape of front end flex section：Tool There is front end flex section 410A catheter axle 410；It is fixed on the preceding termination electrode of the front end of the catheter axle 410；1st operation is used Line 441, its by twist thread (left-hand lay) constitute, to make the front end flex section 410A of catheter axle 410 towards the 1st direction (arrow in Fig. 7 Direction shown in A) bend and be inserted through in the inside of catheter axle 410, the front end of the 1st behaviour's position 441 is connected and fixed on Preceding termination electrode, rear end is available for carrying out drawing operation；2nd behaviour position 442, its by twist thread (left-hand lay) constitute, to make catheter axle 410 front end flex section 410A is bent towards the 2nd direction (direction in Fig. 7 shown in arrow B), is inserted through in catheter axle 410 Inside, the front end of the 2nd behaviour's position 442 is connected and fixed on preceding termination electrode, and rear end is available for carrying out drawing operation；It is assemblied in and leads The joystick of the rear end of liquid pipe axle 410.
The front end flex section 410A of catheter axle 410 be by for form central lumen 419L lumen 419, for shape Into the lumen 411~418 for 8 sub- tube chamber 411L~418L being spaced at 45 ° around central lumen 419L to pass through Adhesive resin fix state with then such as into multi-cavity structure body.
High rigidity lumen 413 (high rigidity part) is with high rigidity lumen 417 (high rigidity part) across catheter axle 410 Central shaft (M410) configuration is opposed in front end flex section 410A, high rigidity lumen 413 (high rigidity part) is in the 2nd imagination There is central shaft (M on plane P2413), high rigidity lumen 417 (high rigidity part) has central shaft on the 2nd imaginary plane P2 〔M417), the 2nd imaginary plane P2 is relative to the central shaft (M containing catheter axle 410410), for the 1st behaviour position 441 be inserted through Sub- tube chamber 411L central shaft (M411) and for the 2nd central shaft (M for grasping the sub- tube chamber 415L that position 442 is inserted through415) Plane orthogonal 1st imaginary plane P1, and the central shaft (M containing catheter axle 410410〕。
High rigidity lumen 412 (high rigidity part) is with high rigidity lumen 416 (high rigidity part) across catheter axle 410 Central shaft (M410) configuration is opposed in front end flex section 410A, high rigidity lumen 412 (high rigidity part) is in the 3rd imagination There is central shaft (M on plane P3412), high rigidity lumen 416 (high rigidity part) has central shaft on the 3rd imaginary plane P3 〔M416), the 3rd imaginary plane P3 be by by the 2nd imaginary plane P2 with the central shaft (M of catheter axle 410410) centered on, towards with The twisted direction identical direction twisted thread rotates a certain angle (θ) (θ=45 ° in present embodiment.).
The electrode catheter 400 of present embodiment possesses：Catheter axle 410, it is fixed on before the front end of catheter axle 410 Termination electrode, the 1st behaviour's position 441 and the 2nd being inserted through in the inside of catheter axle 410 grasp position 442, are assemblied in catheter The joystick of the rear end of axle 410.
In addition, the electrode of the 2nd embodiment shown in the face shaping and Fig. 4 of the electrode catheter 400 of present embodiment Catheter 200 is identical.
In addition, the preceding termination electrode and joystick that constitute electrode catheter 400 are and the front end electricity in the 2nd embodiment Pole 230 and the identical structure of joystick 270.
The front end area for constituting the catheter axle 410 of electrode catheter 400 is front end flex section 410A.
The front end flex section 410A of catheter axle 410 is made up of multi-cavity structure body.
As shown in fig. 7, front end flex section 410A includes：Fixed by adhesive resin in lumen 411~416 Side (core) portion 428, outside (epidermis) portion 429 being made up of the resin for coating inside portion 428, are constituting the lumen of inside portion 428 419 are internally formed central lumen 419L, and respective in lumen 411~418 be internally formed sub- tube chamber 411L~418L.
The wire (diagram is omited) of termination electrode etc. before being inserted through in the central lumen 419L for being formed at front end flex section 410A.
Front end flex section 410A tube chamber 411L and sub- tube chamber 415L are formed at across the center of catheter axle 410 Axle (M410) it is opposed to configuration.
Central shaft (the M of sub- tube chamber 411L (lumen 411)411) and sub- tube chamber 415L (lumen 415) central shaft (M415〕 On the 1st imaginary plane P1.
It is inserted through in sub- tube chamber 411L for making the front end flex section 410A of catheter axle 410 towards the 1st side shown in arrow A Position 441 is grasped to the 1st of flexure the.In addition, being inserted through in sub- tube chamber 415L for making the front end flex section of catheter axle 410 2nd behaviour's position 442 of the 2nd direction flexure shown in 410A towards arrow B.
The 1st behaviour's position 41 and the 2nd in 1st behaviour's behaviour's embodiment of position 442 and the 1st of position 441 and the 2nd Behaviour position 42 it is identical by twist thread (left-hand lay) constitute.The front end of 1st behaviour's behaviour's position 442 of position 441 and the 2nd is connected respectively Preceding termination electrode is fixed on, respective rear end is connected to the knob of joystick, so as to for carrying out drawing operation.
Front end flex section 410A tube chamber 413L and sub- tube chamber 417L are formed at across the center of catheter axle 410 Axle (M410) it is opposed to configuration.
Central shaft (the M of sub- tube chamber 413L (high rigidity lumen 413)413) and sub- tube chamber 417L (high rigidity lumen 417) Central shaft (M417) be located 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 containing leading Central shaft (the M of liquid pipe axle 410410) imaginary plane.
Front end flex section 410A tube chamber 412L and sub- tube chamber 416L are formed at across the center of catheter axle 410 Axle (M410) it is opposed to configuration.
Central shaft (the M of sub- tube chamber 412L (high rigidity lumen 412)412) and sub- tube chamber 416L (high rigidity lumen 416) Central shaft (M416) be located 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 center of catheter axle 410 Axle (M410) centered on, grasp the twisted direction (front twisted thread that position 441 and the 2nd grasps position 442 towards with constituting the 1st Twisted direction) imaginary plane formed by 45 ° of identical direction (in Fig. 7 counterclockwise) rotation.
Front end flex section 410A tube chamber 414L and sub- tube chamber 418L are formed at across the center of catheter axle 410 Axle (M410) it is opposed to configuration.
The central shaft (M414) of sub- tube chamber 414L (lumen 414) and sub- tube chamber 418L (lumen 418) central shaft (M418) is located on the 4th imaginary plane P4.In the present embodiment, the 4th imaginary plane P4 be by by the 2nd imaginary plane P2 with Central shaft (the M of catheter axle 410410) centered on, grasp twisting thread for the behaviour's position 442 of position 441 and the 2nd towards with constituting the 1st The opposite direction in twisted direction (the twisted direction of front) () 45 ° of rotation in Fig. 7 clockwise formed by imagination it is flat Face.
The lumen 411~419 for forming sub- tube chamber 411L~418L and central lumen 419L respectively is made up of resin.
The lumen for being used for forming sub- tube chamber 411L, 414L, 415L, 418L and central lumen 419L respectively as constituting 411st, 414,415,418 and 419 resin, preferably with the rigidity equal or bigger with adhesive resin.
It is used as the D hardness for the resin for constituting lumen 411,414,415,418 and 419, for example, less than 80, preferably 50 ~75.
As constitute lumen 411,414,415,418 and 419 resin the modulus of elasticity in static bending, for example, 15~1, 000MPa, preferably 100~800MPa.
As the resin material for constituting lumen 411,414,415,419, the chamber in the 1st embodiment can be enumerated and constituted The resin identical resin of pipe 11~16.
The high rigidity lumen 412,413,416 and 417 for forming sub- tube chamber 412L, 413L, 416L and 417L is by firm Property than adhesive resin and constitute that the high rigid resin of resin of lumen 411,414,415,418 and 419 constitutes it is high Rigid element.
As the resin material for constituting high rigidity lumen 412,413,416 and 417, polyimides, polyethers can be enumerated Ether ketone (PEEK) and nylon 11 etc..
Constitute high rigidity lumen 412,413,416 and 417 resin D hardness than constitute lumen 411,414,415, The D hardness of 418 and 419 resin is high, for example, more than 72, preferably 77~95.
It is used as the modulus of elasticity in static bending for the resin for constituting high rigidity lumen 412,413,416 and 417, for example, 1,500 ~19,000MPa, preferably 2,000~7,000MPa.
By by respective central shaft (M413) and (M417) be located at the 2nd imaginary plane P2 on high rigidity lumen 413 with And 417 across catheter axle 410 central shaft (M410) it is opposed to configuration so that the front end flex section 410A of catheter axle 410 As the mode close with there is leaf spring on the 2nd imaginary plane P2, even if not matching somebody with somebody in front end flex section 410A inside Leaf spring is put, can also be bent along the 2nd imaginary plane P2, easily along the 1st imaginary plane P1 courts direction vertical with the 2nd imaginary plane P2 Flexure.
In addition, by by respective central shaft (M412) and (M416) it is located at the high rigidity lumen on the 3rd imaginary plane P3 412 and 416 across catheter axle 410 central shaft (M410) it is opposed to configuration so that the front end flexible portion of catheter axle 410 Dividing 410A to turn into the mode close with there is leaf spring on the 3rd imaginary plane P3, being difficult to bend along the 3rd imaginary plane P3, holding Easily bent towards the direction vertical with the 3rd imaginary plane P3.
When the drawing of the 1st behaviour's position 441 to constituting electrode catheter 400 is operated, twist thread what is constituted by left-hand lay The front of 1st behaviour's position 441 rotates towards the backtwisting direction (being turned clockwise in Fig. 7) twisted thread.
Herein, because the front end of the 1st behaviour's position 441 is connected and fixed on preceding termination electrode, therefore from the 1st behaviour's position 441 rotation torque forward end electrodes transfer.
Thus, it is supposed that the lumen that ought form sub- tube chamber 412L and 416L is not high rigidity part, and have and lumen 414 And 418 it is equal it is rigid in the case of, then (front end is flexible for the catheter axle 410 that preceding termination electrode and preceding termination electrode are fixed Part 410A) front by with the central shaft (M of catheter axle 410410) centered on, towards the rotation with the 1st behaviour's position 441 Direction identical direction (direction (clockwise direction) in Fig. 7 shown in arrow R) rotates.
On the other hand, front end flex section 410A rear end side can not be rotated freely as front, thus, and front end is scratched Property part 410A towards arrow R shown in direction reverse, and for example towards arrow A ' in same figure it is shown direction flexure.
However, in the electrode catheter 400 of present embodiment, sub- tube chamber 412L and 416L is respectively by high rigidity lumen 412 and 416 (high rigidity parts) formation, as the mode close with there is leaf spring on the 3rd imaginary plane P3 (so Mode in, when using by single line constitute the 1st behaviour position in the case of, front end flex section 410A is counterclockwise turned round Turn, and for example towards the direction flexure in Fig. 7 shown in arrow A "), therefore in the drawing operation of the 1st behaviour's position 441, can Suppress and prevent front end flex section 410A from being reversed towards the direction (clockwise direction) shown in arrow R, as a result, no torsion can be made The front end flex section 410A turned is bent along the 1st imaginary plane P1 towards the 1st direction shown in arrow A.
In addition, when the drawing of the 2nd behaviour's position 442 to constituting electrode catheter 400 is operated, by the structure of twisting thread of left-hand lay Into the 2nd behaviour's position 442 front towards backtwisting direction (in Fig. 7 clockwise) rotation twisted thread.
Herein, because the front end of the 2nd behaviour's position 442 is connected and fixed on preceding termination electrode, therefore from the 2nd behaviour's position 442 rotation torque forward end electrodes transfer.
Thus, it is supposed that the lumen that ought form sub- tube chamber 412L and 416L is not high rigidity part, and have and lumen 414 And 418 it is equal it is rigid in the case of, (the front end flexible portion of catheter axle 410 that preceding termination electrode and preceding termination electrode are fixed Point 410A) front by with the central shaft (M of catheter axle 410410) centered on, towards the rotation side with the 2nd behaviour's position 442 Rotated to identical direction (direction (clockwise direction) in Fig. 7 shown in arrow R).
On the other hand, front end flex section 410A rear end side can not be rotated freely as front, thus, and front end is scratched Property part 410A towards arrow R shown in direction reverse, and for example towards arrow B ' in same figure it is shown direction flexure.
However, in the electrode catheter 400 of present embodiment, sub- tube chamber 412L and 416L is respectively by high rigidity lumen 412 and 416 (high rigidity parts) formation, as the mode close with there is spring on the 3rd imaginary plane P3 (so Mode in, when using by single line constitute the 2nd behaviour position in the case of, front end flex section 410A is counterclockwise turned round Turn, and for example towards the direction flexure in Fig. 7 shown in arrow B "), therefore when the drawing to the 2nd behaviour's position 442 is operated, energy It is enough to suppress and prevent front end flex section 410A from being reversed towards the direction (turning clockwise) shown in arrow R, as a result, no torsion can be made The front end flex section 410A turned is bent along the 1st imaginary plane P1 towards the 2nd direction shown in arrow B.
Position 441 and the 2nd is grasped according to the electrode catheter the 400, the 1st of present embodiment and grasps position 442 by twisting thread Constitute, and drawing operation is carried out to the rear end of the 1st behaviour's behaviour's position 442 of position 441 or the 2nd, thus make front end flexible Part 410A shape changes in actual identical plane (the 1st imaginary plane P1), can be reliably according to based on operator Direction (the 1st direction or the 2nd direction) flexure of the suppression of member.
<5th embodiment>
Possess figure 8 illustrates the electrode catheter 500 of the present embodiment of the cross section shape of front end flex section：Tool There is front end flex section 510A catheter axle 510；It is fixed on the preceding termination electrode of the front end of the catheter axle 510；1st operation is used Line 541, its by twist thread (left-hand lay) constitute, to make the front end flex section 510A of catheter axle 510 towards the 1st direction (arrow in Fig. 8 Direction shown in A) bend and be inserted through in the inside of catheter axle 510, the front end of the 1st behaviour's position 541 is connected and fixed on Preceding termination electrode, rear end is available for carrying out drawing operation；2nd behaviour position 542, its by twist thread (left-hand lay) constitute, to make catheter axle 510 front end flex section 510A bends towards the 2nd direction (direction in Fig. 8 shown in arrow B) and is inserted through in catheter axle 510 Inside, the front end of the 2nd behaviour's position 542 is connected and fixed on preceding termination electrode, and rear end is available for carrying out drawing operation；It is assemblied in and leads The joystick of the rear end of liquid pipe axle 510.
The front end flex section 510A of catheter axle 510 be by for form tube chamber 511L~514L 4 lumens 511~ The 514 multi-cavity structure bodies configured with the state fixed by adhesive resin.
In front end flex section 510A, shaft-like rigid body 551 (high rigidity part) and the shaft-like (Gao Gang of rigid body 552 Property part) to be embedded in the state for being constituted resin of catheter axle 510, across the central shaft (M of catheter axle 510510) opposed Ground is configured, and shaft-like rigid body 551 (high rigidity part) has central shaft (M on the 3rd imaginary plane P3551), shaft-like rigidity Body 552 (high rigidity part) has central shaft (M on the 3rd imaginary plane P3552), the 3rd imaginary plane P3 is by will be relative In the central shaft (M containing catheter axle 510510), the tube chamber 511L central shaft (M that is inserted through for the 1st behaviour's position 541511) with And central shaft (the M for the tube chamber 512L being inserted through for the 2nd behaviour's position 542512) the orthogonal planes of the 1st imaginary plane P1 that is, contain There is the central shaft (M of catheter axle 510510) the 2nd imaginary plane P2 with the central shaft (M of catheter axle 510510) centered on, court Rotated a certain angle (θ) (θ=45 ° in present embodiment with the twisted direction identical direction twisted thread.) formed by rotation.
The electrode catheter 500 of present embodiment possesses：Catheter axle 510, it is fixed on before the front end of catheter axle 510 Termination electrode, the 1st behaviour's position 541 and the 2nd being inserted through in the inside of catheter axle 510 grasp position 542, are assemblied in catheter The joystick of the rear end of axle 510.
In addition, the electrode of the 2nd embodiment shown in the face shaping and Fig. 4 of the electrode catheter 500 of present embodiment Catheter 200 is identical.
In addition, the preceding termination electrode and joystick that constitute electrode catheter 500 are and the front end electricity in the 2nd embodiment Pole 230 and the identical structure of joystick 270.
The front end area for constituting the catheter axle 510 of electrode catheter 500 is front end flex section 510A.
The front end flex section 510A of catheter axle 510 is made up of multi-cavity structure body.
As shown in figure 8, front end flex section 510A includes：Fixed by adhesive resin in lumen 511~514 Side (core) portion 518, outside (epidermis) portion 519 being made up of the resin for coating inside portion 518, in the respective of lumen 511~514 It is internally formed tube chamber 511L~514L.
It is formed at front end flex section 510A central shaft (Ms of the tube chamber 511L and 512L across catheter axle 510510〕 It is opposed to configuration, tube chamber 511L (lumen 511) central shaft (M511) and tube chamber 512L (lumen 512) central shaft (M512) position In on the 1st imaginary plane P1.
It is inserted through in tube chamber 511L for making the front end flex section 510A of catheter axle 510 towards the 1st side shown in arrow A Position 541 is grasped to the 1st of flexure the.
In addition, being inserted through in tube chamber 512L for making the front end flex section 510A of catheter axle 510 towards shown in arrow B 2nd behaviour's position 542 of 2 directions flexure.
1st behaviour position 541 and the 2nd behaviour position 542 by with the 1st embodiment the 1st behaviour position 41 and 2nd behaviour the identical of position 42 twist thread (left-hand lay) composition.The front end difference of 1st behaviour's behaviour's position 542 of position 541 and the 2nd Preceding termination electrode is connected and fixed on, respective rear end is connected to the knob of joystick, so as to for carrying out drawing operation.
It is formed at front end flex section 510A central shaft (Ms of the tube chamber 513L and 514L across catheter axle 510510〕 It is opposed to configuration, tube chamber 513L (lumen 513) central shaft (M513) and tube chamber 514L (lumen 514) central shaft (M514〕 On the 2nd imaginary plane P2.
In the present embodiment, the 2nd imaginary plane P2 be the plane orthogonal relative to the 1st imaginary plane P1, and be containing Central shaft (the M of catheter axle 510510) imaginary plane.
The lumen 511~514 for forming tube chamber 511L~514L is made up of resin.
As the resin for constituting lumen 511~514, preferably with the rigidity equal or bigger with adhesive resin.
It is used as the D hardness for the resin for constituting lumen 511~514, for example, less than 80, preferably 50~75.
It is used as the modulus of elasticity in static bending for the resin for constituting lumen 511~514, for example, 15~1,000MPa, preferably 100 ~800MPa.
As the resin material for constituting lumen 511~514, can enumerate and constitute lumen 11 in the 1st embodiment~ 16 resin identical resin.
In the front end flex section 510A of catheter axle 510, there is central shaft (M on the 3rd imaginary plane P3551) bar The rigid body 551 (high rigidity part) of shape and on the 3rd imaginary plane P3 have central shaft (M552) shaft-like rigid body 552 (high rigidity part), to be embedded in the state for being constituted resin of catheter axle 510, across the central shaft of catheter axle 510 〔M510) it is opposed to configuration.
In the present embodiment, the 3rd imaginary plane P3 be by by the 2nd imaginary plane P2 with the center of catheter axle 510 Axle (M510) centered on, grasp the twisted direction (front twisted thread that position 541 and the 2nd grasps position 542 towards with constituting the 1st Twisted direction) 45 ° of identical direction (in Fig. 8 counterclockwise) rotation imaginary plane.
By by respective central shaft (M551) and (M552) it is located at the rigid body 551 and 552 on the 3rd imaginary plane P3 Across the central shaft (M of catheter axle 510510) it is opposed to configuration so that the front end flex section 510A of catheter axle 510 turns into The mode close with there is spring on the 3rd imaginary plane P3.
That is, being significantly greater than resistance during front end flex section 510A flexures along the 3rd imaginary plane P3 scratches the front end Property part 510A towards resistance during vertical with the 3rd imaginary plane P3 direction flexure, front end flex section 510A is difficult false along the 3rd Think that plane P3 is bent, easily bent towards the direction vertical with the 3rd imaginary plane P3.
When the drawing of the 1st behaviour's position 541 to constituting electrode catheter 500 is operated, twist thread what is constituted by left-hand lay The front of 1st behaviour's position 541 rotates in Fig. 8 clockwise towards the backtwisting direction () twisted thread.
Herein, because the front end of the 1st behaviour's position 541 is connected and fixed on preceding termination electrode, therefore from the 1st behaviour's position 541 rotation torque forward end electrodes transfer.
Thus, it is supposed that in the case that above-mentioned rigid body is not opposed to configuration, preceding termination electrode and preceding termination electrode are consolidated The front of fixed catheter axle 510 (front end flex section 510A) is by with the central shaft (M of catheter axle 510510) centered on, Rotated towards the direction of rotation identical direction (direction (clockwise direction) in Fig. 8 shown in arrow R) with the 1st behaviour's position 541.
On the other hand, front end flex section 510A rear end side can not be free as front, thus, front end flexible portion The direction shown in 510A towards arrow R is divided to reverse, and the direction flexure shown for example towards arrow A ' in same figure.
However, in the electrode catheter 500 of present embodiment, respective central shaft (M551) and (M552) it is located at the 3rd Central shaft (the M of rigid body 551 and 552 (high rigidity part) on imaginary plane P3 across catheter axle 510510) opposed Ground is configured, as the mode close with there is spring on the 3rd imaginary plane P3 (in such mode, when using by list In the case that line constitutes the 1st behaviour's position, front end flex section 510A is counterclockwise reversed, and for example towards arrow in Fig. 8 Direction flexure shown in head A "), therefore in the drawing operation of the 1st behaviour's position 541, can suppress and prevent front end flexible portion The direction (clockwise direction) shown in 510A towards arrow R is divided to reverse, as a result, the front end flex section 510A of no torsion can be made Bent along the 1st imaginary plane P1 towards the 1st direction shown in arrow A.
In addition, when the drawing of the 2nd behaviour's position 542 to constituting electrode catheter 500 is operated, by the structure of twisting thread of left-hand lay Into the 2nd behaviour's position 542 front towards backtwisting direction (in Fig. 8 clockwise) rotation twisted thread.
Herein, because the front end of the 2nd behaviour's position 542 is connected and fixed on preceding termination electrode, therefore from the 2nd behaviour's position 542 rotation torque forward end electrodes transfer.
Thus, it is supposed that in the case that above-mentioned rigid body is not opposed to configuration, preceding termination electrode and preceding termination electrode institute The front of fixed catheter axle 510 (front end flex section 510A) is with the central shaft (M of catheter axle 510510) centered on, Rotated towards the direction of rotation identical direction (direction (clockwise direction) in Fig. 8 shown in arrow R) with the 2nd behaviour's position 542.
On the other hand, front end flex section 510A rear end side can not be rotated freely as front, thus, and front end is scratched Property part 510A towards arrow R shown in direction reverse, and for example towards arrow B ' in same figure it is shown direction flexure.
However, in the electrode catheter 500 of present embodiment, respective central shaft (M551) and (M552) it is located at the 3rd Central shaft (the M of rigid body 551 and 552 (high rigidity part) on imaginary plane P3 across catheter axle 510510) opposed Ground is configured, as there is the close mode of spring on the 3rd imaginary plane P3 (in such mode, when using by single line In the case of constituting the 2nd behaviour's position, front end flex section 510A is counterclockwise reversed, and for example towards arrow in Fig. 8 Direction flexure shown in B "), therefore in the drawing operation of the 2nd behaviour's position 542, can suppress and prevent front end flex section Direction (clockwise direction) shown in 510A towards arrow R is reversed, as a result, can make the front end flex section 510A of torsion along the 1 imaginary plane P1 is bent towards the 2nd direction shown in arrow B.
According to the electrode catheter 500 of present embodiment, although the 1st behaviour position 541 and the 2nd behaviour position 542 by Twist thread composition, but can make front end flexible portion by pulling operation the 1st and grasping position 541 or the 2nd and grasp the rear end of position 542 510A shape is divided to change on actual identical flat face (the 1st imaginary plane P1), can be according to based on operating personnel's will Direction (the 1st direction or the 2nd direction) is reliably bent.
So far, embodiments of the present invention are illustrated, but the catheter of the deflectable operation in front end of the present invention Above-mentioned mode is not limited to, various changes can be carried out.For example, angle formed by the 2nd imaginary plane P2 and the 3rd imaginary plane P3 Degree (θ) can not be 45 °, can suitably be adjusted in the scope of 0 ° of ＜ θ ＜, 90 ° of establishments.Wherein, for substantially ensuring that front end scratches The viewpoint of the flatness of the shape of property part, angle (θ) is preferably 20~70 °, more preferably 30~60 °, and particularly preferably 40 ~50 °.
In addition, grasping twisting thread for position as constituting, twisting thread for right-laid can be used.
Furthermore it is possible to be grasp position number for 1 the deflectable operation in front end from single current to type catheter.
In addition, the embodiment of the catheter as the deflectable operation in front end of the present invention, enters by taking electrode catheter as an example Go explanation, but the present invention can also be applied to guiding catheter (guiding catheter), angiogram catheter, conduit pin (pilot pin), miniature catheter, insertion catheter etc..
Wherein, description of reference numerals is as follows：
100：Electrode catheter；10：Catheter axle；10A：Front end flex section；11~16：Lumen；11L~16L：Pipe Chamber；18：Inside portion；19：Outside portion；20：Pouring member；30：Preceding termination electrode；30L：The wire of preceding termination electrode；32：Ring-type electricity Pole；32L：The wire of ring electrode；41：1st behaviour's position；42：2nd behaviour's position；51、52：Stream formation pipe (high rigidity Part)；60：Leaf spring；70：Joystick；75：Knob；80：The ascending pipe of perfusion liquid；200：Electrode catheter；210：Lead Liquid pipe axle；210A：Front end flex section；211、212、215、216：Lumen；213、214：High rigidity lumen (high rigidity part)； 211L~216L：Tube chamber；218：Inside portion；219：Outside portion；300：Electrode catheter；310：Catheter axle；310A：Scratch front end Property part；311~316：Lumen；311L~316L：Tube chamber；318：Adhesive resin；355、356：Rigid body (high rigidity portion Part)；400：Electrode catheter；410：Catheter axle；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：Inside portion；429：Outside Sidepiece；500：Electrode catheter；510：Catheter axle；510A：Front end flex section；511~514：Lumen；511L~514L： Tube chamber；518：Inside portion；519：Outside portion；551、552：Rigid body (high rigidity part).

Claims (12)

1. a kind of catheter of the deflectable operation in front end, it is characterised in that
With catheter axle and behaviour's position, the catheter axle has flex section in front end, and behaviour's position is by twisting thread Constitute, to bend the flex section of the catheter axle, behaviour's position is inserted through in the inside of the catheter axle, and should The rear end of behaviour's position is available for drawing to operate,
At least flex section of the catheter axle is multi-cavity structure body,
At least one in multiple tube chambers of the flex section are formed at is inserted through behaviour's position,
In the flex section, 2 tubuloses of configuration or shaft-like high rigidity are opposed to across the central shaft of the catheter axle Part, 2 high rigidity parts have respective central shaft on the 3rd imaginary plane, and the 3rd imaginary plane is by inciting somebody to action The 1st imagination relative to the central shaft containing the catheter axle and the central shaft for the tube chamber for being inserted through behaviour's position is flat The orthogonal plane in face and be the central shaft containing the catheter axle the 2nd imaginary plane, with the central shaft of the catheter axle Centered on towards being rotated a certain angle with the twisted direction identical direction twisted thread formed by θ, wherein, 0 ° of ＜ θ ＜ 90°。
2. the catheter of the deflectable operation in front end according to claim 1, it is characterised in that
Configuration is being opposed to across the central shaft of the catheter axle and there is respective central shaft on the 3rd imaginary plane 2 tube chambers, the inner tube as the high rigidity part is respectively configured.
3. the catheter of the deflectable operation in front end according to claim 2, it is characterised in that
Pass through the stream of said inner tube formation perfusion liquid.
4. the catheter of the deflectable operation in front end according to claim 1, it is characterised in that
The state that the multi-cavity structure body is fixed with multiple lumens by adhesive resin is configured,
As the high rigidity part, configure by rigidity and to constitute the high material of resin than described adhesive resin and other lumens Expect the lumen constituted.
5. the catheter of the deflectable operation in front end according to claim 1, it is characterised in that
As the high rigidity part, in the composition resin that shaft-like rigid body is embedded in the catheter axle.
6. according to the catheter of the deflectable operation in front end according to any one of claims 1 to 5, it is characterised in that
The angulation θ of 2nd imaginary plane and the 3rd imaginary plane is 45 ± 5 °.
7. according to the catheter of the deflectable operation in front end according to any one of claims 1 to 5, it is characterised in that
Leaf spring is configured on the 2nd imaginary plane of the flex section.
8. the catheter of the deflectable operation in front end according to claim 6, it is characterised in that
Leaf spring is configured on the 2nd imaginary plane of the flex section.
9. according to the catheter of the deflectable operation in front end according to any one of claims 1 to 5, it is characterised in that
It is in multiple tube chambers of the flex section are formed at, across the catheter axle central shaft be opposed to configuration 2 Individual tube chamber is inserted through behaviour's position respectively.
10. the catheter of the deflectable operation in front end according to claim 6, it is characterised in that
It is in multiple tube chambers of the flex section are formed at, across the catheter axle central shaft be opposed to configuration 2 Individual tube chamber is inserted through behaviour's position respectively.
11. the catheter of the deflectable operation in front end according to claim 7, it is characterised in that
It is in multiple tube chambers of the flex section are formed at, across the catheter axle central shaft be opposed to configuration 2 Individual tube chamber is inserted through behaviour's position respectively.
12. the catheter of the deflectable operation in front end according to claim 8, it is characterised in that
It is in multiple tube chambers of the flex section are formed at, across the catheter axle central shaft be opposed to configuration 2 Individual tube chamber is inserted through behaviour's position respectively.
CN201480022925.4A 2013-07-25 2014-05-28 The catheter of the deflectable operation in front end Active CN105142708B (en)

Applications Claiming Priority (3)

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JP2013-154479 2013-07-25
JP2013154479A JP5697273B2 (en) 2013-07-25 2013-07-25 Tip deflectable catheter
PCT/JP2014/064196 WO2015011986A1 (en) 2013-07-25 2014-05-28 Catheter having distal end capable of being deflected by operation

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CN105142708A CN105142708A (en) 2015-12-09
CN105142708B true CN105142708B (en) 2017-08-15

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KR102059741B1 (en) * 2018-03-13 2020-02-11 부산대학교병원 Precisely steerable catheter tube with stiffness having directionality and longitudinal variability
CN109350324B (en) * 2018-12-06 2023-11-14 南京法迈特科技发展有限公司 Distal bendable stent implantation device
US20220118226A1 (en) * 2019-01-22 2022-04-21 The Trustees Of The University Of Pennsylvania Microcatheter for therapeutic and/or diagnostic interventions in the subarachnoid space
WO2020188704A1 (en) * 2019-03-18 2020-09-24 日本ライフライン株式会社 Catheter having deflectable tip
WO2023196138A1 (en) * 2022-04-08 2023-10-12 St. Jude Medical, Cardiology Division, Inc. Deflectable catheter distal end

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JP4148486B2 (en) * 1998-11-19 2008-09-10 Ｈｏｙａ株式会社 Endoscope operation wire
US7959601B2 (en) * 2005-02-14 2011-06-14 Biosense Webster, Inc. Steerable catheter with in-plane deflection
JP5174542B2 (en) * 2008-06-06 2013-04-03 日本ライフライン株式会社 catheter
JP4679666B1 (en) * 2010-03-30 2011-04-27 日本ライフライン株式会社 catheter
JP5508190B2 (en) * 2010-08-10 2014-05-28 日本ライフライン株式会社 catheter
JP2013048711A (en) * 2011-08-31 2013-03-14 Japan Lifeline Co Ltd Deflectable tip catheter
JP5875175B2 (en) * 2011-10-21 2016-03-02 日本ライフライン株式会社 Electrode catheter
JP5990907B2 (en) * 2011-12-27 2016-09-14 住友ベークライト株式会社 Medical device and method for manufacturing medical device

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KR101871609B1 (en) 2018-06-26
JP2015023952A (en) 2015-02-05
JP5697273B2 (en) 2015-04-08
CN105142708A (en) 2015-12-09
WO2015011986A1 (en) 2015-01-29

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