CN102159278B - Catheter having deflectable leading end - Google Patents

Catheter having deflectable leading end Download PDF

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Publication number
CN102159278B
CN102159278B CN2009801365081A CN200980136508A CN102159278B CN 102159278 B CN102159278 B CN 102159278B CN 2009801365081 A CN2009801365081 A CN 2009801365081A CN 200980136508 A CN200980136508 A CN 200980136508A CN 102159278 B CN102159278 B CN 102159278B
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China
Prior art keywords
leaf spring
amphi
amphi position
behaviour
position end
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Expired - Fee Related
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CN2009801365081A
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Chinese (zh)
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CN102159278A (en
Inventor
增岛克浩
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Japan Lifeline Co Ltd
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Japan Lifeline Co Ltd
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    • 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
    • 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
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/283—Invasive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852—Catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
    • A61B5/6869—Heart
    • 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
    • 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
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00839—Bioelectrical parameters, e.g. ECG, EEG
    • 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
    • A61M2025/015—Details of the distal fixation of the movable mechanical means

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Pulmonology (AREA)
  • Hematology (AREA)
  • Molecular Biology (AREA)
  • Anesthesiology (AREA)
  • Cardiology (AREA)
  • Pathology (AREA)
  • Mechanical Engineering (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Electrotherapy Devices (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Surgical Instruments (AREA)

Abstract

Provided is a catheter having a deflectable leading end, which can connect and fix an operation wire firmly on a leaf spring whatever material the leaf spring and the operation wire might be made of, so that the operation wire may not leave the surface of the leaf spring while the catheter is being used. The catheter comprises a catheter tube (4), a leading tip electrode (10) fixed at the distal end of the catheter tube (4), an oscillating leaf spring (20) arranged along the axial direction inside of the distal end side of the catheter tube (4) and made deformable in a warping direction, an operation wire (30) arranged to extend in the axial direction inside of the catheter tube (4) and made pullable at the proximal end thereof, and a ring-shaped member (40) for caulking and fixing the distal end portion (303) of the operation wire (30) on one face (201) and/or the other face (202) of the distal end portion (203) of the leaf spring (20).

Description

Front end can be partial to the conduit of operation
Technical field
The present invention relates to front end and can be partial to the conduit of operation, more specifically, relate to by operative configuration can change at the distolateral operating portion of external peri position the amphi position end that is inserted into endoceliac conduit towards front end can be partial to the conduit of operating.
Background technology
For example, in the electrode catheter of the inside that is inserted into heart via arteries etc., need make by the operating portion that operation is installed on the peri position end that is configured in external conduit (rear end or side) on hand the amphi position end (stiff end of front-end chip electrode) that is inserted into the conduit in the heart towards changing (deflection).
In the past, the mechanism that makes it to be partial to as the amphi position end of the operation of side on hand conduit, known have a mechanism shown in the following patent documentation 1.
In the mechanism shown in this patent documentation 1, the internal configurations leaf spring (tabular reed) in the amphi position end of the conduit with flexibility is at the one side of the amphi position end of this leaf spring and/or the amphi position end that another side is connected and fixed behaviour's position.And, by pulling operating operation with the peri position end of line, can make the leaf spring deflection and change conduit amphi position end towards.
At this, the one side of behaviour's amphi position end of position and leaf spring and/or another side be connected and fixed common use scolding tin.
But, in the one side of behaviour's position and leaf spring and/or being connected and fixed under the situation of using scolding tin of another side, because the constituent material (for example rustless steel) of the constituent material (for example rustless steel, Ni-Ti alloy) of leaf spring and behaviour's position is all relatively poor with the wettability of scolding tin, therefore, can not be connected and fixed on behaviour's position on the one side and/or another side of leaf spring with enough intensity, in the use of the electrode catheter shown in the patent documentation 1, grasping position sometimes can break away from from the surface of leaf spring.
In addition, in the electrode catheter shown in the patent documentation 1, the front-end chip electrode that is fixed in the amphi position end of conduit only is connected fixing (joint (Japanese: set)) at the amphi position end of flexible pipe (Japanese: power テ one テ Le チ ュ one Block) and these two positions of amphi position end of leaf spring.
At this, being connected and fixed usually of the amphi position end of front-end chip electrode and flexible pipe undertaken by bonding agent, but sometimes because this bonding agent aging grade in time causes bonding force to reduce.
In addition, when being connected and fixed front-end chip electrode and leaf spring, use scolding tin usually, but because the constituent material (embodying rustless steel, the Ni-Ti alloy of good springiness) of leaf spring is relatively poor with the wettability of scolding tin, it is very difficult utilizing scolding tin to be connected and fixed.
Therefore, the front-end chip electrode can not be connected and fixed on the amphi position end of conduit with enough engaging forces, in the use of electrode catheter, the front-end chip electrode may come off in vivo.The recovery of front-end chip electrode in vivo of coming off is very difficult, need avoid the front-end chip electrode to come off from the amphi position end of flexible pipe.
At this problem, the applicant has proposed the conduit that such front end can be partial to operation: the front-end chip electrode is linked to the amphi position end of leaf spring (oscillating structural member), and the amphi position end that will grasp position with the linking part of the amphi position end of leaf spring independently is connected and fixed on front-end chip electrode (the following patent documentation 2 of reference).
Figure 10 is the cutaway view of the distolateral inside of the amphi position of conduit of expression patent documentation 2 record.
As shown in the drawing, near the internal configurations the amphi position end of flexible pipe 104 has the leaf spring 120 as oscillating structural member, and the scolding tin 150 that utilizes the inside be filled in front-end chip electrode 110 is connected and fixed on front-end chip electrode 110 with the amphi position end of leaf spring 120.Amphi position end at leaf spring 120 is formed with breach, temperature sensor is arranged with protecting tube 140 in the internal configurations of breach.The peri position end of leaf spring 120 is connected and fixed on the amphi position end of serpentine pipe 124 in the inside of flexible pipe 104.In the figure, Reference numeral 112 is the ring electrodes that are installed on the amphi position end of flexible pipe 104, and Reference numeral 122 is reinforcement plates that face is connected with leaf spring 120.
Reference numeral 130 is be used to a pair of behaviour's position that makes leaf spring 120 to arrow A direction or the deflection deformation of arrow B direction, is formed with anticreep large-diameter portion (anti-delinking part) 130a respectively at the amphi position end of grasping position 130.Aforesaid operations clips two side positions that leaf spring 120 and leaf spring 120 are configured in leaf spring 120 dividually with the amphi position end of line 130 in the inside of scolding tin 150, utilize anticreep to prevent from grasping position 130 disengaging scolding tin 150 with large-diameter portion 130a.
The peri position of behaviour's position 130 distolateral can move freely vertically through the inside of operation with pipe 132.The peri position end of behaviour's position 130 is connected with the roller (Japanese: pluck body) of deflection move operation (swinging operation) for the leading section that carries out flexible pipe 104, pass through operated roller, pull any behaviour's position 130, can both make leaf spring 120 deflections, make the amphi position end of conduit to arrow A or B direction swing deflection.
In above-mentioned such conduit that constitutes, front-end chip electrode 110 is not only the amphi position end that is connected and fixed on flexible pipe 104 and the amphi position end of leaf spring 120, also with respect to flexible pipe 104, leaf spring 120 is connected and fixed on the amphi position end of a pair of behaviour's position 130 independently, therefore, even under the situation about fixedly being disengaged of front end chip electrode 110 and the amphi position end of flexible pipe 104 or under the binding of the amphi position end of front-end chip electrode 110 and leaf spring 120 situation about being disengaged, front-end chip electrode 110 also can be connected with the amphi position end of a pair of behaviour's position 130, therefore, can prevent that front-end chip electrode 110 from coming off.
Patent documentation 1: No. 3232308 communique of Japan's special permission
Patent documentation 2: TOHKEMY 2006-61350 communique
Summary of the invention
The problem that invention will solve
But, in the conduit of patent documentation 2 records, the amphi position end that (leave the amphi position end of leaf spring) independently with the linking part of the amphi position end of leaf spring, will grasp position is connected and fixed on the front-end chip electrode, therefore, in pulling when operation of grasping position, the amphi position end of behaviour's position may be deviate from (being disengaged with being connected of front-end chip electrode) from the scolding tin of the inside that is filled in the front-end chip electrode.Namely, can think: even be formed with the anticreep large-diameter portion, behaviour's position in the contact area of amphi position end place and scolding tin still less than the contact area of leaf spring at amphi position end place and scolding tin, behaviour's position by situation about constituting with the relatively poor material (for example rustless steel) of the wettability of scolding tin under, behaviour's position will be deviate under less drag force.
The present invention In view of the foregoing makes.
The 1st purpose of the present invention is that the front end that provides such can be partial to the conduit of operation: irrelevant with the constituent material of the constituent material of leaf spring and behaviour's position, behaviour's position can be connected and fixed on leaf spring securely, in use can not grasp position from the surface disengaging of leaf spring.
The 2nd purpose of the present invention is that the front end that provides such can be partial to the conduit of operation: the front-end chip electrode that can prevent from being fixed on the amphi position end of conduit comes off, and, can prevent from coming off from the scolding tin of the inside that is filled in the front-end chip electrode at the amphi position end of the pulling when operation behaviour position of grasping position.
The 3rd purpose of the present invention is to provide the front end of manufacturing efficient excellence compared with the past can be partial to the conduit of operating.
Be used for solving the means of problem
To achieve these goals, front end of the present invention can be partial to the operation conduit comprise: flexible pipe; The front-end chip electrode, it is fixed in the amphi position end of above-mentioned flexible pipe; The leaf spring of swing usefulness, near the inside of its amphi position at above-mentioned flexible pipe distolateral (amphi position end) disposes vertically, can be out of shape to the deflection direction; Behaviour's position, it is configured to extend vertically in the inside of above-mentioned flexible pipe, and the peri position end of this behaviour's position can pull operation; Annular component, it is used for aforesaid operations with the amphi position end banding of line (Japanese: power シ メ) be fixed in one side and/or the another side of the amphi position end of above-mentioned leaf spring.
Adopt such structure, because the amphi position end banding that will grasp position is fixed on the one side and/or another side of amphi position end of leaf spring, therefore, have nothing to do with the constituent material of leaf spring and the constituent material of behaviour's position, behaviour's position can be connected and fixed on leaf spring securely.
Can be partial in the conduit of operation at front end of the present invention, the above-mentioned leaf spring that the preferred scolding tin that utilizes the inside that is filled in above-mentioned front-end chip electrode will have been fixed by above-mentioned annular component banding and aforesaid operations are connected and fixed on this front-end chip electrode with the amphi position end of line.
Adopt such structure, because the amphi position end of leaf spring, the amphi position end of behaviour's position and the annular component that their bandings is fixing contact with the scolding tin of the inside that is filled in the front-end chip electrode (being embedded in), therefore, be fixed on the front-end chip electrode fixing except being connected (set) of amphi position end of flexible pipe in these two positions of amphi position end of the amphi position end of flexible pipe and leaf spring, also be connected fixing (joint) in utilizing the annular component banding to be fixed on the amphi position end of behaviour's position of the amphi position end of leaf spring, and, increase contact area with scolding tin by imbedding annular component, increase leaf spring and behaviour's position with respect to the drawing resistance (engaging force of front-end chip electrode) of scolding tin.Therefore, can prevent reliably that the front-end chip electrode from coming off from flexible pipe.
In addition, the amphi position end of behaviour's position contacts with scolding tin down at the one side of the amphi position end of being fixed in leaf spring by the annular component banding and/or the state on the another side (state that the amphi position end of the amphi position end of leaf spring, behaviour's position and annular component combine), therefore, the amphi position end of leaf spring and annular component antagonism desire will be grasped the force that the position drawing spendes and play the effect of anticreep (drawing resistance).Thus, in pulling when operation of grasping position, the amphi position end that can prevent from grasping position is reliably deviate from from the scolding tin of the inside that is filled in the front-end chip electrode.
Can be partial in the conduit of operation at front end of the present invention, be preferably, aforesaid operations is made of a following line with line, one end of this line and the other end are the peri position end, extend to the amphi position direction from an above-mentioned end (peri position end) inside at above-mentioned flexible pipe, one side side via above-mentioned leaf spring, turn back in amphi position end at this leaf spring, another side side via this leaf spring, extend and arrive the above-mentioned other end (peri position end) to the peri position direction, aforesaid operations is fixed on the amphi position end banding of line on the one side and this two sides of another side of amphi position end of above-mentioned leaf spring.
Adopt such structure, can utilize return portion for a line of amphi position end makes leaf spring to one side side and the deflection deformation of another side side, make conduit amphi position end towards to two changes of direction, therefore, can cut down number of parts, also can easily make.
Can be partial in the conduit of operation at the front end of the present invention with such structure, preferably be formed with in the amphi position end of above-mentioned leaf spring for to breach or the through hole of aforesaid operations with the channeling conduct of turning back of line.
Can be partial in the conduit of operation at front end of the present invention, aforesaid operations is made of following line with line, one end of this line is the peri position end, extend to the amphi position direction inside at above-mentioned flexible pipe, the other end of this line is amphi position end, aforesaid operations is fixed in the amphi position end banding of line on the one side or another side of amphi position end of above-mentioned leaf spring.
Adopt such structure, can utilize behaviour's position to make leaf spring to one side side or the deflection deformation of another side side, make conduit amphi position end towards changing to direction.
In addition, prepare two such behaviour's positions, with they amphi position end portion respectively banding be fixed on the one side and another side of amphi position end of leaf spring, thereby utilize two lines to make leaf spring to one side side and the deflection deformation of another side side both direction, make conduit amphi position end towards to two changes of direction.
Can be partial in the conduit of operation at the front end of the present invention with structure as described above, with the amphi position end of line the sleeve that anticreep is used is installed at aforesaid operations, and, be formed with diameter greater than the large-diameter portion of the internal diameter of above-mentioned sleeve at aforesaid operations with the amphi position end of line, peri position end face by making above-mentioned sleeve and the amphi position end face of above-mentioned annular component connect, thereby limiting above-mentioned sleeve moves to the peri position direction along one side or the another side of above-mentioned leaf spring, by aforesaid operations is connected with the large-diameter portion of the amphi position end of line and the amphi position end face of above-mentioned sleeve, move to the peri position direction in the inside of above-mentioned sleeve with line thereby limit aforesaid operations.
Adopt such structure, can prevent from grasping position reliably and move (being deviate from by behaviour's position that banding is fixed) along one side or the another side of leaf spring to the peri position direction.
Can be partial in the conduit of operation at front end of the present invention, above-mentioned annular component preferably is made of copper or copper alloy.
The annular component that employing is made of copper or copper alloy when the amphi position end banding that will grasp position is fixed on the one side of amphi position end of leaf spring and/or the another side, can easily carry out fixed operation.
In addition, the wettability of copper or copper alloy and scolding tin is good, fixes by utilizing the annular component that is made of copper or copper alloy to carry out banding, can improve the bonding strength of annular component and front-end chip electrode, can prevent more reliably that the front-end chip electrode from coming off.
The effect of invention
Adopt the present invention's's (technical scheme 1) front end can be partial to the conduit of operating, because the amphi position end banding that utilizes annular component will grasp position is fixed on the one side and/or another side of amphi position end of leaf spring, therefore, have nothing to do with the constituent material of leaf spring and the constituent material of behaviour's position, can reliably behaviour's position be connected and fixed on leaf spring securely, in use, behaviour's position can not break away from from the surface of leaf spring.
In addition, adopt the present invention's's (technical scheme 2) front end can be partial to the conduit of operating, can prevent that the front-end chip electrode from coming off, and, in pulling when operation of grasping position, the amphi position end that can prevent from grasping position is reliably deviate from from the scolding tin of the inside that is filled in the front-end chip electrode.
In addition, the amphi position end banding that the conduit that the present invention's's (technical scheme 3) front end can be partial to operation has behaviour's position of being made of a following line, will grasp position is fixed on the one side and another side of amphi position end of leaf spring, this line is to extend to the amphi position direction from an end (peri position end) in the inside of flexible pipe, one side side via leaf spring, turn back in amphi position end at this leaf spring, via the another side side of this leaf spring, extend and the arrival other end (peri position end) to the peri position direction.Adopt the present invention's's (technical scheme 3) front end can be partial to the conduit of operating, can utilize behaviour's position to make leaf spring to one side side and the deflection deformation of another side side both direction, therefore, can cut down number of parts, manufacturing efficient compared with the past is also excellent.
Description of drawings
Fig. 1 is the front view of the electrode catheter of the expression front end of the present invention embodiment that can be partial to the conduit of operating.
Fig. 2 is the distolateral biopsy cavity marker devices front view of amphi position of electrode catheter shown in Figure 1.
Fig. 3 is the distolateral biopsy cavity marker devices vertical view of amphi position of electrode catheter shown in Figure 1.
Fig. 4 is the I-I cutaway view of Fig. 2.
Fig. 5 is the vertical view of the shape of the expression leaf spring that constitutes electrode catheter shown in Figure 1.
Fig. 6 is the distolateral biopsy cavity marker devices front view of amphi position of the electrode catheter of another embodiment of the present invention.
Fig. 7 is the distolateral biopsy cavity marker devices vertical view of amphi position of the electrode catheter of another embodiment of the present invention.
Fig. 8 is the distolateral biopsy cavity marker devices front view of amphi position of the electrode catheter of another embodiment of the invention.
Fig. 9 is the distolateral biopsy cavity marker devices vertical view of amphi position of the electrode catheter of another embodiment of the invention.
The cutaway view of the inside that the amphi position of the expression of Figure 10 electrode catheter in the past is distolateral.
The specific embodiment
The 1st embodiment
Below, based on embodiment explanation the present invention shown in the drawings.
The electrode catheter 2 of embodiment shown in Figure 1 for example is used for diagnosis or the treatment of the arrhythmia of heart.
In Fig. 1, Reference numeral 4 is flexible pipes, Reference numeral 10 is the front-end chip electrodes that are fixed on the amphi position end of flexible pipe 4, Reference numeral 12 is mounted in the ring electrode of the amphi position end of flexible pipe 4, Reference numeral 6 is mounted in the adapter (handle) of the peri position end of flexible pipe 4, and Reference numeral 7 is mounted on the adapter 6 roller of the deflection move operation (swinging operation) of the amphi position end that is used for carrying out flexible pipe 4.The lead that is electrically connected with front-end chip electrode 10 and ring electrode 12 (omitting diagram) is drawn from adapter 6 respectively.
As Fig. 2～shown in Figure 4, the electrode catheter 2 of present embodiment comprises: flexible pipe 4; Be fixed on the front-end chip electrode 10 of the amphi position end of flexible pipe 4; Be installed in a plurality of (two) ring electrode 12 of the amphi position end of flexible pipe 4; Be configured near the leaf spring 20 of inside of the amphi position distolateral (amphi position end) of flexible pipe 4; Be configured to behaviour's position 30 of extending vertically in the inside of flexible pipe 4; Amphi position end 303 bandings that are used for grasping position 30 are fixed on the one side 201 of amphi position end 203 of leaf spring 20 and the annular component 40 on the another side 202.
Flexible pipe 4 is made of the pipe component of hollow.Flexible pipe 4 also can be made of the pipe that has identical characteristics vertically, but preferred flexible pipe 4 have flexible than more excellent amphi position end part and vertically integrally formed with the amphi position end part, with the amphi position end part specific rigidity peri position end parts of excellence relatively mutually.
As the constituent material of flexible pipe 4, for example can enumerate synthetic resin such as polyolefin, polyamide, polyphenylene ether-polyamide copolymer, polyurethane.
The external diameter of flexible pipe 4 is generally about 0.6～3mm, and its internal diameter is about 0.5～2.5mm.Pass through to insulation the axial lumen of flexible pipe 4 respectively respectively with the lead (omitting diagram) that front-end chip electrode 10 is connected with ring electrode 12.
The front-end chip electrode 10 that is fixed on the amphi position end of flexible pipe 4 form bullet cut fore-end 101 and with the continuous cylindric part 102 of this fore-end 101, this cylindric part 102 is inserted in its endoporus from the amphi position end of flexible pipe 4, utilizes bonding agent to engage.
As the constituent material of front-end chip electrode 10, for example can enumerate heat conductivity good metal such as aluminum, copper, rustless steel, gold, platinum.In addition, have good radiography in order to make front-end chip electrode 10 with respect to the X line, preferred front-end chip electrode 10 is made of platinum etc.
The external diameter of front-end chip electrode 10 is not particularly limited, but is preferably the degree identical with the external diameter of flexible pipe 4, is generally about 0.6～3mm.
As the constituent material of the ring electrode 12 of the amphi position end that is installed in flexible pipe 4, can enumerate with as the identical metal of the illustrated material of the constituent material of front-end chip electrode 10.
The external diameter of ring electrode 12 is not particularly limited, but is preferably the degree identical with the external diameter of flexible pipe 4, is generally about 0.6～3mm.
In addition, certainly, the quantity of ring electrode that is installed in the amphi position end of flexible pipe 4 is not limited to two.
The leaf spring 20 that is configured in the distolateral inside of the amphi position of flexible pipe 4 is can be to the oscillating structural member of deflection direction distortion.
Shown in Fig. 5 (1), be formed with the breach 20C that turns back that grasps position for guiding in the amphi position end 203 of leaf spring 20.In addition, shown in Fig. 5 (2), also can replace breach and use the leaf spring 20 that is formed with through hole 20P '.The axial length of leaf spring 20 (L) is not particularly limited, and for example is 40～300mm.The width of leaf spring 20 (W) is not particularly limited so long as can be accommodated in the degree of the inside of flexible pipe 4 and get final product.
The material of leaf spring 20 is not particularly limited, and for example can enumerate macromolecular materials such as metal material, polyfurolresin, polyamide such as rustless steel, Ni-Ti alloy, Co-Ni alloy etc.
In the electrode catheter 2 of present embodiment, adopt banding as grasping the method that position 30 is connected and fixed on the leaf spring 20, owing to unlike in the past, use scolding tin, therefore, constituent material as leaf spring 20, can use the metal material relatively poor with the wettability of scolding tin (for example rustless steel, Ni-Ti alloy), and, also can use and compare the relatively poor macromolecular material of thermostability with metal material.
The peri position end of leaf spring 20 is connected and fixed on the flexible pipe 4, perhaps is connected and fixed on the amphi position end of the serpentine pipe (omitting diagram) that bears the counteracting force that acts on the drag force on behaviour's position 30.
The behaviour's position 30 that extends vertically in the inside of flexible pipe 4 is configured to its peri position end can pull operation.
Behaviour's position 30 is made of a such line: an end of this line and the other end are the peri position end, in (above among Fig. 2 and Fig. 3 the being) extension from an end (peri position end) to the amphi position direction of the inside of flexible pipe 4, one side 201 sides via leaf spring 20, be formed on the breach guiding on the amphi position end 203 of leaf spring 20 and turn back (therefore, return portion is divided into the amphi position end of grasping position 30), via another side 202 sides of leaf spring 20, extend and the arrival other end (peri position end) to peri position direction (below).
As an end and the other end of peri position end of behaviour's position 30, be connected with the roller 7 of the deflection move operation (swinging operation) of the amphi position end that is used for carrying out flexible pipe 4.
Behaviour's position 30 can be that the metal of superelastic alloy system etc. constitutes by rustless steel, Ni-Ti for example, but also not necessarily is made of metal, for example also can be made of high-intensity non-conductive line etc.By constitute behaviour's position with non-conductive line, can reduce the reason of high frequency noise.
Annular component 40 is fixed on one side 201 and the another side 202 of the amphi position end 203 of leaf spring 20 for amphi position end 303 bandings that will grasp position 30.
Thus, the amphi position end 303 (turn back before and after parts) of behaviour's position 30 can be fastened on securely on the one side 201 and another side 202 of amphi position end 203 of leaf spring 20.
Do not use scolding tin to be connected and fixed on method on the leaf spring 20 (one side 201 and another side 202) as grasp position 30 owing to adopt banding, therefore, the constituent material as grasping position 30 can use the material lower with the wettability of scolding tin.
As the constituent material of annular component 40, can from the metal that can easily carry out banding processing (behaviour's position 30 being connected and fixed with respect to leaf spring 20), suitably select.
In addition, as described later, be connected and fixed on this front-end chip electrode 10 for the scolding tin 50 that utilizes the inside (inner recess) that is filled in front-end chip electrode 10 will utilize the amphi position end 203 of the leaf spring 20 that annular component 40 bandings have fixed and the amphi position end 303 of behaviour's position 30, the constituent material of annular component 40 is preferably the wettability good metal material with respect to scolding tin.From this viewpoint, as the preferred constituent material of annular component 40, can enumerate copper or copper alloy.By using copper or copper alloy as the constituent material of annular component 40, even use with the lower material (for example rustless steel, Ni-Ti alloy) of the wettability of scolding tin as the constituent material of leaf spring 20 and the constituent material of behaviour's position 30, also the amphi position end of leaf spring 20 and behaviour's position 30 can be connected and fixed on front-end chip electrode 10 securely.
As Fig. 2～shown in Figure 4, in the electrode catheter 2 of present embodiment, utilize the scolding tin 50 of the inside be filled in front-end chip electrode 10 will utilize the amphi position end 203 of the leaf spring 20 that annular component 40 bandings have fixed and the amphi position end 303 of behaviour's position 30 to be connected and fixed on front-end chip electrode 10.
That is, in the amphi position end 303 and scolding tin 50 that annular component 40 is embedded in the inside that is filled in front-end chip electrode 10 of the amphi position end 203 of leaf spring 20, behaviour's position 30.
The material of scolding tin 50 that is filled in the inside of front-end chip electrode 10 is not particularly limited, and for example can Sn-Pb, Sn-Pb-Ag, Sn-Pb-Cu be shown example, can also use Sn-Ag-Cu, Sn-Cu, Sn-Ag, Sn-Ag-Cu-Bi etc. as no Pb scolding tin.
In the electrode catheter 2 of present embodiment, by the roller 7 that is operatively connected device 6, pull an end of behaviour's position 30 or a certain side in the other end and make leaf spring 20 deflections to the peri position direction, thereby the amphi position end that makes electrode catheter 2 is to the swing of the direction shown in arrow A or B deflection.
For example, by making roller shown in Figure 17 to rotation counterclockwise, an end of behaviour's position 30 is pulled to the peri position direction, and leaf spring 20 is to one side 201 side deflections, thereby the amphi position end of electrode catheter 2 is to the swing of the direction shown in arrow A deflection.In addition, by making roller 7 to the clockwise direction rotation, the other end of behaviour's position 30 is pulled to the peri position direction, and leaf spring 20 is to another side 202 side deflections, thereby the amphi position end of electrode catheter 2 is to the swing of the direction shown in arrow B deflection.
Like this, utilize behaviour's position 30 can make leaf spring 20 to one side 201 sides (arrow A direction) and another side 202 sides (arrow B direction) both direction deflection deformation, therefore, can cut down number of parts (in the past needing two line to become), also make easily.
In addition, if adapter 6 is rotated around axis, then can electrode catheter 2 is inserted into the A that freely sets electrode catheter 2 under the endoceliac state or B direction towards.
Adopt the electrode catheter 2 of present embodiment, be fixed in the one side 201 of amphi position end 203 of leaf spring 20 and each face of another side 202 owing to can utilize annular component 40 will grasp the amphi position end 303 of position 30 (turn back front and back parts) banding, therefore, have nothing to do with the constituent material of leaf spring 20 and the constituent material of behaviour's position 30, behaviour's position 30 can be connected and fixed on leaf spring 20 securely, in the process of using conduit (in the operation), can not grasp position 30 from one side 201 or another side 202 disengagings of leaf spring 20.
In addition, adopt the electrode catheter 2 of present embodiment, the amphi position end 203 of leaf spring 20, the amphi position end 303 of behaviour's position 30 and the annular component 40 that their bandings is fixing contact with the scolding tin 50 of the inside that is filled in front-end chip electrode 10 (being embedded in), front-end chip electrode 10 fixing except being connected (joint) is in 203 these two positions, amphi position end of the amphi position end of flexible pipe 4 and leaf spring 20, also be connected fixing (joint) is fixed on the amphi position end of leaf spring 20 in banding the amphi position end 303 of behaviour's position 30, and, utilization constitutes the effect of raising that annular component 40 produces and the wettability of scolding tin 50 by the contact area of imbedding increase that annular component 40 produces and scolding tin 50 with by copper or copper alloy, increases leaf spring 20 and grasps position 30 with respect to the drawing resistance (engaging force of front-end chip electrode 10) of scolding tin 50.Thus, can prevent reliably that front-end chip electrode 10 from coming off from flexible pipe 4.
In addition, because the amphi position end 303 of behaviour's position 30 contacts with scolding tin 50 down at one side 201 and the state on the another side 202 (the amphi position end 303 of the amphi position end 203 of leaf spring 20, behaviour's position 30 and state that annular component 40 combines) of the amphi position end 203 of being fixed in leaf spring 20 by annular component 40 bandings, therefore, the amphi position end 203 of leaf spring 20 and annular component 40 antagonism desires will be grasped position 30 force that drawing spendes from scolding tin 50 and play the effect of anticreep (drawing resistance).Thus, in pulling when operation of grasping position 30, the amphi position end that can prevent from grasping position 30 is reliably deviate from from the scolding tin 50 of the inside that is filled in front-end chip electrode 10.
The 2nd embodiment
Fig. 6 and Fig. 7 are distolateral biopsy cavity marker devices front view and the local top view in cross-section of amphi position of the electrode catheter of another embodiment of the present invention.
In addition, use identical Reference numeral for the element identical or corresponding with the 1st embodiment.
The face shaping of the electrode catheter of present embodiment is identical with the 1st embodiment shown in Figure 1.As shown in Figure 6 and Figure 7, the electrode catheter of present embodiment comprises: flexible pipe 4; Be fixed on the front-end chip electrode 10 of the amphi position end of flexible pipe 4; Be installed in a plurality of (two) ring electrode 12 of the amphi position end of flexible pipe 4; Be configured near the leaf spring 25 of inside of the amphi position distolateral (amphi position end) of flexible pipe 4; Be configured to behaviour's position 35 of extending vertically in the inside of flexible pipe 4; The amphi position end banding that is used for grasping position 35 is fixed in the annular component 40 on the face 252 of amphi position end of leaf spring 25; Be installed in the sleeve 60 that the anticreep of amphi position end of behaviour's position 35 is used.
The leaf spring 25 that constitutes the electrode catheter of present embodiment is not the structure identical with the leaf spring 20 of the electrode catheter that constitutes the 1st embodiment except forming in its amphi position end the breach.
The behaviour's position 35 that constitutes the electrode catheter of present embodiment is such lines: the one end is the peri position end, extends to amphi position direction (top among Fig. 6 and Fig. 7) in the inside of flexible pipe 4 (face 252 sides of leaf spring 25), and the other end is amphi position end.
The peri position end of behaviour's position 35 is configured to pull operation.That is, the peri position end of behaviour's position 35 is connected with the roller (roller 7 shown in Figure 1) of deflection move operation for the amphi position end of carrying out flexible pipe 4.
Amphi position end at behaviour's position 35 is formed with anticreep large-diameter portion (anti-delinking part) 35a.As the formation method of anti-delinking part 35a, for example can the method that form by the TIG welding be shown example.
The amphi position end of behaviour's position 35 is fixed on by annular component 40 bandings on the face 252 of amphi position end of leaf spring 25.
Thus, pull behaviour's position 35 by the roller that is operatively connected device, can make leaf spring 25 to face 252 side deflections, can make the amphi position end of electrode catheter to a direction (direction shown in the arrow B) swing deflection.
The anticreep that constitutes the electrode catheter of present embodiment is installed (overcoat) in the amphi position end of behaviour's position 35 (fixed position than annular component 40 is distolateral by amphi position) with sleeve 60.
The external diameter of sleeve 60 is the size in the space that surrounds of sleeve 60 face 252 by the inner peripheral surface of annular component 40 and leaf spring 25 that can not be inserted into.Thus, because the peri position end face of sleeve 60 and the amphi position end face of annular component 40 connect, therefore, can limit sleeve 60 and move to the peri position direction.
In addition, the internal diameter of sleeve 60 is a bit larger tham the external diameter of grasping position 35, but less than the diameter of anti-delinking part 35 of behaviour's position 35.Thus, connect by anti-delinking part 35a and the amphi position end face of sleeve 60 that makes behaviour's position 35, restriction is grasped position 35 and is moved to the peri position direction in the inside of sleeve 60.
By such sleeve 60 being installed on the amphi position end of behaviour's position 35, when pulling behaviour's position 35, can preventing from grasping position 35 reliably and move (being deviate from from annular component 40 by behaviour's position 35 that banding is fixed) in the inside of flexible pipe 4 to the peri position direction.
Constituent material as sleeve 60 is not particularly limited, and for example can use rustless steel etc., but the wettability good metal material (for example phosphor bronze) of preferred use and scolding tin 50.
As shown in Figure 6 and Figure 7, in the electrode catheter of present embodiment, utilize the amphi position end of the leaf spring 25 that the scolding tin 50 of the inside be filled in front-end chip electrode 10 will have been fixed by annular component 40 bandings and the amphi position end of behaviour's position 35 to be connected and fixed on front-end chip electrode 10.
That is, amphi position end, annular component 40 and the sleeve 60 of the amphi position end of leaf spring 25, behaviour's position 35 are embedded in the scolding tin 50 of the inside that is filled in front-end chip electrode 10.
In the electrode catheter of present embodiment, by being operatively connected the roller of device, can pulling an end (peri position end) of behaviour's position 35 and make leaf spring 25 deflections to the peri position direction, can make the amphi position end of electrode catheter to a direction swing deflection thus.
For example, by making roller shown in Figure 17 to the clockwise direction rotation, can pull an end (peri position end) of behaviour's position 35 and make leaf spring 25 to face 252 side deflections to the peri position direction, thereby the amphi position end of electrode catheter be to the swing of the direction shown in arrow B deflection.
Adopt the electrode catheter of present embodiment, because the amphi position end banding that utilizes annular component 40 will grasp position 35 is fixed in the face 252 of the amphi position end of leaf spring 25, therefore, have nothing to do with the constituent material of leaf spring 25 and the constituent material of behaviour's position 35, behaviour's position 35 can be connected and fixed on leaf spring 25 securely, in the process of using conduit (in the operation), can not grasp position 35 from face 252 disengagings of leaf spring 25.
In addition, adopt the electrode catheter of present embodiment, the amphi position end of leaf spring 25, the amphi position end of behaviour's position 35, the annular component 40 that their bandings is fixing and the sleeve 60 that is installed in the amphi position end of behaviour's position 35 contact with the scolding tin 50 of the inside that is filled in front-end chip electrode 10 (being embedded in), front-end chip electrode 10 fixing except being connected (joint) is in these two positions, amphi position end of the amphi position end of flexible pipe 4 and leaf spring 25, also be connected fixing (joint) is fixed on the amphi position end of leaf spring 25 in banding the amphi position end of behaviour's position 35, and, utilization constitutes annular component 40 by the contact area of the increase of imbedding annular component 40 and sleeve 60 generations and scolding tin 50 with by copper or copper alloy, constitute the effect of raising that sleeve 60 produces and the wettability of scolding tin 50 by phosphor bronze, increase leaf spring 25 and grasp position 35 with respect to the drawing resistance (engaging force of front-end chip electrode 10) of scolding tin 50.Thus, can prevent reliably that front-end chip electrode 10 from coming off from flexible pipe 4.
In addition, because the state (state that amphi position end, annular component 40 and the sleeve 60 of the amphi position end of leaf spring 20, behaviour position 35 combine) of the amphi position end of behaviour's position 35 on the face 252 of the amphi position end of being fixed in leaf spring 25 by annular component 40 bandings contacts with scolding tin 50 down, therefore, the amphi position end of leaf spring 25, annular component 40 and sleeve 60 antagonism desires will be grasped position 35 force that drawing spendes from scolding tin 50 and play the effect of anticreep (drawing resistance).Thus, can prevent from reliably deviating from from the scolding tin 50 of the inside that is filled in front-end chip electrode 10 at the amphi position end of the pulling when operation behaviour position 35 of grasping position 35.
The 3rd embodiment
Fig. 8 and Fig. 9 are distolateral biopsy cavity marker devices front view and the local top view in cross-section of amphi position of the electrode catheter of another embodiment of the invention.
In addition, to the element mark identical Reference numeral identical or corresponding with the 2nd embodiment.
The face shaping of the electrode catheter of present embodiment is identical with the 1st embodiment shown in Figure 1.As Fig. 8 and shown in Figure 9, the electrode catheter of present embodiment has the structure identical with the 2nd embodiment, also comprises in addition: be configured to behaviour's position 36 of extending along face 251 sides of leaf spring 25 in the inside of flexible pipe 4; Be installed in the anticreep sleeve 61 of the amphi position end of behaviour's position 36.
The behaviour's position 36 that constitutes the electrode catheter of present embodiment is such lines: the one end is the peri position end, extends in the face 251 side direction amphi position directions (top among Fig. 8 and Fig. 9) of leaf spring 25 in the inside of flexible pipe 4, and its other end is amphi position end.This behaviour's position 36 is structures identical with behaviour's position of extending in face 252 sides of leaf spring 25 35, also is formed with anti-delinking part 36a at the amphi position end of behaviour's position 36.
The peri position end of behaviour's position 36 is configured to pull operation.That is, the peri position end of behaviour's position 36 is connected with the roller (roller 7 shown in Figure 1) of deflection move operation for the amphi position end of carrying out flexible pipe 4.
The amphi position end of behaviour's position 36 utilizes annular component 40 bandings to be fixed on the face 251 of amphi position end of leaf spring 25.
The sleeve 61 that constitutes the electrode catheter of present embodiment is installed (overcoat) in the amphi position end of behaviour's position 36.
Sleeve 61 is structures identical with the sleeve 60 of the amphi position end that is installed in behaviour's position 35, and the peri position end face of sleeve 61 and the amphi position end face of annular component 40 connect, and move to the peri position direction thereby can limit sleeve 61.In addition, connect by anti-delinking part 36a and the amphi position end face of sleeve 61 that makes behaviour's position 36, can limit and grasp position 36 and move to the peri position direction in the inside of sleeve 61.
By such sleeve 61 being installed on the amphi position end of behaviour's position 36, can prevent reliably that behaviour's position 36 moves (being deviate from from annular component 40 by behaviour's position 36 that banding is fixed) in the inside of flexible pipe 4 to the peri position direction when pulling behaviour's position 36.
As Fig. 8 and shown in Figure 9, in the electrode catheter of present embodiment, the amphi position end of the amphi position end of leaf spring 25, behaviour's position 35 and be installed in the amphi position end of this behaviour position 35 sleeve 60, grasp the amphi position end of position 36 and be installed in the sleeve 61 of the amphi position end of this behaviour's position 36, the scolding tin 50 that annular component 40 is embedded in the inside that is filled in front-end chip electrode 10.
In the electrode catheter of present embodiment, by being operatively connected the roller of device, can make the amphi position end of conduit to the swing of the direction shown in arrow A or B deflection.
For example, by making roller shown in Figure 17 to rotation counterclockwise, pull an end (peri position end) of behaviour's position 36 and make leaf spring 25 to face 251 side deflections to the peri position direction, thereby make the amphi position end of electrode catheter swing deflection to the direction shown in the arrow A.In addition, by making roller 7 to the clockwise direction rotation, pull an end (peri position end) of behaviour's position 35 and make leaf spring 25 to face 252 side deflections to the peri position direction, thereby the amphi position end of electrode catheter is partial to the swing of the direction shown in the arrow B.
Adopt the electrode catheter of present embodiment, the amphi position end banding that utilizes annular component 40 will grasp position 35 is fixed in the face 251 that the face 252 of the amphi position end of leaf spring 25, the amphi position end banding that will grasp position 36 are fixed in the amphi position end of leaf spring 25, therefore, irrelevant with the constituent material of leaf spring 25 and behaviour's position 35,36 constituent material, behaviour's position 35,36 can be connected and fixed on leaf spring 25 securely, in the process of using conduit (in the operation), can not grasp position 36,35 faces 251 from leaf spring 25,252 disengagings.
In addition, adopt the electrode catheter of present embodiment, the amphi position end of leaf spring 25, behaviour's position 35, sleeve 60, behaviour's position 36, sleeve 61 and annular component 40 contact with the scolding tin 50 of the inside that is filled in front-end chip electrode 10 (being embedded in), front-end chip electrode 10 fixing except being connected (joint) is in these two positions, amphi position end of the amphi position end of flexible pipe 4 and leaf spring 25, also be connected fixing (joint) is fixed on the amphi position end of leaf spring 25 in banding behaviour's position 35 and the amphi position end of grasping position 36, and, utilization is by imbedding annular component 40, the increase that sleeve 60 and sleeve 61 produces and the contact area of scolding tin 50 and constitute annular component 40 by copper or copper alloy, constitute the effect of the wettability of raising that sleeve 60 and sleeve 61 produce and scolding tin 50 by phosphor bronze, increase leaf spring 25, behaviour's position 35 and behaviour's position 36 are with respect to the drawing resistance (engaging force of front-end chip electrode 10) of scolding tin 50.Thus, can prevent reliably that front-end chip electrode 10 from coming off from flexible pipe 4.
In addition, behaviour's position 35,36 the amphi position end state (state that amphi position end, sleeve 61 and the annular component 40 of the amphi position end of the amphi position end of leaf spring 20, behaviour's position 35, sleeve 60, behaviour's position 36 combines) on the face 252,251 of the amphi position end of being fixed in leaf spring 25 by annular component 40 bandings contacts with scolding tin 50 down, therefore, the amphi position end of leaf spring 25, annular component 40 and sleeve 60 or 61 antagonism desires will grasps position 35 or grasp position 36 force that drawing spendes from scolding tin 50 and play the effect of anticreep (drawing resistance).Thus, in pulling when operation of grasping position 35 or behaviour's position 36, the amphi position end that can prevent from grasping position 35 or behaviour's position 36 is reliably deviate from from the scolding tin 50 of the inside that is filled in front-end chip electrode 10.
Modified example
More than, embodiments of the present invention have been described, but the present invention is not limited thereto, can carry out various changes.
For example, also can utilize the amphi position end of the leaf spring that the method beyond the scolding tin will have been fixed by the annular component banding and the amphi position end of behaviour's position to be connected and fixed on the front-end chip electrode.
In addition, the amphi position end of the leaf spring of having been fixed by the annular component banding and the amphi position end of behaviour's position are not connected and fixed on the mode of front-end chip electrode, are also contained in the scope of the present invention.
Description of reference numerals
2, electrode catheter; 4, flexible pipe; 6, adapter; 7, roller; 10, front-end chip electrode; 101, fore-end; 102, cylindric part; 12, ring electrode; 20, leaf spring; 201, simultaneously; 202, another side; 203, the amphi position end of leaf spring; 25, leaf spring; 251, face; 252, face; 30, behaviour's position; 303, the amphi position end of behaviour's position; 35,36, behaviour's position; 40, annular component; 50, scolding tin; 60,61, anticreep sleeve.

Claims (5)

1. a front end can be partial to the conduit of operating, and it is characterized in that, the conduit that this front end can be partial to operation comprises:
Flexible pipe;
The front-end chip electrode, it is fixed on the amphi position end of above-mentioned flexible pipe;
The leaf spring of swing usefulness, it disposes vertically in the distolateral inside of the amphi position of above-mentioned flexible pipe, can be out of shape to the deflection direction;
Behaviour's position, it is configured to extend vertically in the inside of above-mentioned flexible pipe, and the peri position end of this behaviour's position can pull operation;
Annular component, it is used for aforesaid operations is fixed in one side and/or the another side of the amphi position end of above-mentioned leaf spring with the amphi position end banding of line,
Aforesaid operations is made of a following line with line, one end of this line and the other end are the peri position end, extend from an above-mentioned end to the amphi position direction inside at above-mentioned flexible pipe, one side side via above-mentioned leaf spring, turn back in amphi position end at this leaf spring, via the another side side of this leaf spring, arrive the above-mentioned other end to the extension of peri position direction
Aforesaid operations is fixed in the amphi position end banding of line on the one side and another side of amphi position end of above-mentioned leaf spring.
2. front end according to claim 1 can be partial to the conduit of operation, it is characterized in that,
Utilization is filled in above-mentioned leaf spring that the scolding tin of the inside of above-mentioned front-end chip electrode will have been fixed by above-mentioned annular component banding and aforesaid operations and is connected and fixed on this front-end chip electrode with the amphi position end of line.
3. front end according to claim 1 can be partial to the conduit of operation, it is characterized in that,
Be formed with in the amphi position end of above-mentioned leaf spring for to the breach of aforesaid operations with the channeling conduct of turning back of line.
4. front end according to claim 1 can be partial to the conduit of operation, it is characterized in that,
Be formed with in the amphi position end of above-mentioned leaf spring for to the through hole of aforesaid operations with the channeling conduct of turning back of line.
5. can be partial to the conduit of operation according to each described front end in the claim 1～4, it is characterized in that,
Above-mentioned annular component is made of copper or copper alloy.
CN2009801365081A 2008-09-26 2009-08-24 Catheter having deflectable leading end Expired - Fee Related CN102159278B (en)

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JP2008248473A JP4526585B2 (en) 2008-09-26 2008-09-26 Tip deflectable catheter
PCT/JP2009/064692 WO2010035599A1 (en) 2008-09-26 2009-08-24 Catheter having deflectable leading end

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附图1.

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WO2010035599A1 (en) 2010-04-01
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CN102159278A (en) 2011-08-17
HK1155991A1 (en) 2012-06-01
KR101300884B1 (en) 2013-08-27

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