CN202982207U

Movatterモバイル変換

Info

Publication number: CN202982207U
Application number: CN 201220594880
Authority: CN
Inventors: 陈绍良
Original assignee: Individual
Current assignee: Pulnovo Medical Wuxi Co Ltd
Priority date: 2012-11-13
Filing date: 2012-11-13
Publication date: 2013-06-12
Anticipated expiration: 2022-11-13

Abstract

A multi-electrode synchronous radio-frequency ablation catheter for curing pulmonary hypertension comprises a control handle, a catheter body and a ring. A regulating device is arranged on the control handle, the catheter body is of hollow structure and provided with a cavity inside, and a lead, a temperature sensing wire and a traction wire are arranged in the cavity. One end of the catheter body is flexible, the flexible end of the catheter body is connected with the ring, the other end of the catheter body is connected with the control handle, one end of the traction wire is connected with the flexible end of the catheter body, the other end of the traction wire is connected with the regulating device on the control handle, and the regulating device controls tension degree of the traction wire so as to control radian of the flexible end. A shape memory wire is arranged in the ring, one end of the shape memory wire extends to the tail end of the ring, the other end of the shape memory wire penetrates through the root of the ring to be fixed to the flexible end of the catheter body, an electrode group is arranged on the ring, each electrode is connected with the lead and the temperature sensing wire which penetrate through the catheter body to be electrically connected with the control handle. The multi-electrode synchronous radio-frequency ablation catheter has the advantages of simplicity in operation, short surgery time, accurate and controllable ablation and the like.

Description

The multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension

Technical field

This utility model relates to a kind of medical apparatus and instruments for removing sympathetic nerve treatment pulmonary hypertension in pulmonary artery.

Background technology

Pulmonary hypertension is the difficult diseases of cardiovascular, breathing, connective tissue, immune rheumatism system, and the clinical treatment means are limited, the curative effect extreme difference.The primary pulmonary hypertension sickness rate is low, but is secondary to interstitial pulmonary fibrosis, connective tissue disease, portal hypertension, chronical thromboembolic pulmonary hypertension and the left sickness rate of feeling concerned about the system disease is comparatively common, and the mortality rate in 5 years reaches 30%.Therefore, actively preventing and treating the pulmonary hypertension tool is of great significance.

In recent years according to the research to Pulmonary Artery Hypertension, new targeted drug constantly occurs, but these medicines all exist serious limitation, comprise that side effect is more, dosage form is improper, expensive and curative effect is unreliable etc., can't be used widely in clinical treatment.Experimental data proves that the interior sympathetic excitability of pulmonary hypertension and pulmonary artery increases and the pressure receptor Showed Very Brisk is relevant; in the blocking-up pulmonary artery, the structure of sympathetic nerve or permanent damage pressure receptor and function thereof can make pulmonary artery pressure descend, and will become the disruptive technology for the treatment of pulmonary hypertension.But this emerging technology also lacks the operating theater instruments of specialty, and particularly special-purpose pulmonary artery radio frequency ablation catheter ensures.

The utility model content

The technical problem that solves:This utility model provides a kind of multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension, be used for removing sympathetic nerve treatment pulmonary hypertension in pulmonary artery, this conduit only carries out radio frequency heating to adherent tissue and blood is not heated, have simple to operate, operating time is short, melt the accurately advantage such as controlled.

Technical scheme:The multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension comprises joystick, pipe shaft and annular ring, and described joystick is provided with adjusting device; Described pipe shaft is hollow structure, in establish cavity, be provided with wire, temperature sense line and draught line in cavity, one end of pipe shaft has flexibility, and this flexible ends is connected with annular ring, and the other end of pipe shaft is connected with joystick, one end of draught line is connected with flexible ends, the other end is connected with adjusting device on joystick, controls the tensioning degree of draught line by adjusting device, realizes the radian of flexible ends is controlled; Be provided with shape-memory wire in annular ring, one end of this shape-memory wire extends to the tip of annular ring, the root that the other end passes annular ring is fixed in the flexible ends of pipe shaft, annular ring is provided with the electrode group, each electrode all is connected with the temperature sense line with wire, and described wire and temperature sense line pass pipe shaft and be electrically connected to joystick.

Electrode on annular ring adopts platinumiridio, gold, rustless steel or nickel alloy material to make, and quantity is 3-30, and electrode diameter is 1.3～2.0mm, and length is 1.2-4mm, and the Distances Between Neighboring Edge Points of adjacent electrode is 0.5-10mm.

The flexible ends of described pipe shaft is offered counterbore, and the root external diameter of annular ring matches with the internal diameter of described counterbore, and the annular ring root is inserted in counterbore and fixes.

The flexible ends of described pipe shaft arranges groove, is provided with connector in groove, and an end of described connector is connected with draught line, and the other end is connected with shape-memory wire.

Described shape memory wire material in annular ring is marmem, and described marmem is Nitinol, rustless steel or titanium, and its diameter is 0.25-0.5mm, described annular ring diameter 12-40mm.10 electrodes preferably are set, electrode width 0.75mm, spacing 5mm on annular ring.

Described pipe shaft flexible ends adopts medical macromolecular materials to make, and length is 30-80mm.

Described connected mode is to connect by ultraviolet curing glue.

Junction sealing between described pipe shaft flexible ends and annular ring.

Described draught line is made by rustless steel or Nitinol, and the draught line outer cover has turn, and the turn outer cover has pogo barrel, and pogo barrel is made by polyimide material.

Beneficial effect:This utility model makes this conduit only carry out radio frequency heating to adherent tissue and blood not heated owing to having adopted above technical scheme, have simple to operate, operating time is short, melt the accurately advantage such as controlled.The conduit pipe shaft is preferably made by macromolecular material, is the non-conductor of heat due to macromolecular material, thereby the heat in the time of can avoiding heated by electrodes better is delivered to the fluid flow blood that contacts with described conduit pipe shaft, thereby more effectively avoids the heating to blood.In addition, by the operation adjusting device, can control the bending of described flexible ends.Can allow like this hand control handle of operator, adjust easily the bending of described flexible ends, make the electrode on annular ring can be fully adherent with pulmonary artery, realize that the pulmonary artery inwall melts.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the partial enlarged drawing of this utility model B section;

Fig. 3 is the sectional structure schematic diagram of this utility model A-A '.

In figure: the 1-pipe shaft; The 2-joystick; The 3-flexible ends; The 4-annular ring; The 5-electrode; The 6-wire; 7-temperature sense line; The 8-draught line; The 9-hollow cavity; The 10-guidewire lumen; The 11-connector; The 12-shape-memory wire; The 13-turn; The 14-pogo barrel.

The specific embodiment

Embodiment 1:

Below by implementation column, and by reference to the accompanying drawings 1～3, the technical solution of the utility model is described in further detail, but this utility model is not limited only to the following examples.

This utility model provides a kind of multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension, wherein said conduit pipe shaft has far-end and near-end, conduit pipe shaft far-end is provided with flexible ends, and conduit pipe shaft near-end is provided with joystick, and draught line extends in described conduit pipe shaft; The conduit pipe shaft is preferably made by macromolecular material, is the non-conductor of heat due to macromolecular material, thereby the heat in the time of can avoiding heated by electrodes better is delivered to the fluid flow blood that contacts with described conduit pipe shaft, thereby more effectively avoids the heating to blood.Flexible ends comprises near-end and far-end, and its far-end is provided with annular ring, and described flexible ends has flexibility for the remainder of described conduit pipe shaft; Annular ring is provided with a plurality of electrodes, each electrode all can be used in and extracts electroneurographic signal, temperature and melt, all be connected with wire and temperature sense line under each electrode, and extend to described joystick through described conduit pipe shaft, thereby be electrically connected to described joystick; Under each electrode, equal heeling-in has temperature sensor line, and described temperature sensor line is used for the temperature of ablation procedure is accurately monitored.Be provided with shape-memory wire in annular ring, the remote extension of described shape-memory wire is to the far-end of annular ring, and its near-end is fixed in the far-end of described flexible ends.At the shape-memory wire of annular ring, described metal material is preferably marmem, and described marmem is preferably: the materials such as Nitinol, rustless steel, titanium.Shape-memory wire in annular ring, its diameter 0.25-0.5mm, described annular ring diameter 12-40mm.The length 30-80mm of described flexible ends adopts medical macromolecular materials to make, such as: the materials such as fluorine class, polyesters, polyurethane, polyamide, polyimides.The far-end of described flexible ends is provided with counterbore, and the near-end of annular ring section is fixed in described counterbore, and wherein, the near-end of annular ring section is levigate end.Described conduit pipe shaft embedded set draught line, an end of described draught line is fixed on described joystick, by operating described joystick, can control the bending of described flexible ends.For example, a described end of described draught line can be fixed on an adjusting knob on described joystick, by operating a described adjusting knob, can control the bending of described flexible ends.Can allow like this hand control handle of operator, adjust easily the bending of described flexible ends, make the electrode on annular ring can be fully adherent with pulmonary artery, realize that the pulmonary artery inwall melts.

Furtherly, beat counterbore at the far-end of flexible ends 3, the degree of depth of described counterbore can be set according to actual needs, is preferably 2-8mm dark.The near-end of annular ring 4 is levigate end, and its external diameter matches with the internal diameter of described counterbore.In described levigate section insertion flexible ends 3, it can be fixed by bonding, welding or other suitable mode, and is preferred, by ultraviolet curing glue, itself and flexible ends 3 far-ends bondings is fixed; And unnecessary glue can seal between the near-end with the far-end of described flexible ends 3 and annular ring pipe 4.

Shown in Figure 1 is the structural representation of the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension.Annular ring 4 is located at the far-end of described flexible ends 3.Annular ring 4 is circulus.Its bending can be supported by described shape-memory wire and consist of.Also be provided with a plurality of electrodes 5 on annular ring 4.Each electrode all can be used in extraction electroneurographic signal, sense temperature and implementation and melts.Number of electrodes can be 3-30, and quantity preferably is 5-20.Electrode adopts the metal materials such as platinumiridio, gold, rustless steel or nickel alloy to make.Electrode diameter is generally at 1.3～2.0mm, and the length of electrode is generally at 1.2-4mm, and length preferably is 2-3.5mm.The Distances Between Neighboring Edge Points of adjacent electrode is advisable with 0.5-10mm, and spacing preferably is 1-5mm.

Draught line 8 is preferably made by rustless steel or Nitinol, and as shown in Figures 2 and 3, its far-end extends to annular ring 4 near-ends byhollow cavity 9, and is fixed on flexible ends 3 far-ends, and its fixed form can adopt any suitable method in prior art.Preferably, at the far-end of flexible ends 3, groove is set, is provided withconnector 11 in groove, one end of describedconnector 11 is connected withdraught line 8, the other end is connected with shape-memory wire 12, and by inject glue in groove, the far-end of flexible ends 3 as described in as ultra-violet curing glue, connector being fixed in.At one section draughtline 8 of the interior extension of flexible ends 3, at one section draughtline 8 of the interior extension of described conduit pipe shaft 1, preferred, its outer cover has turn 13, and its outer cover has pogo barrel 14.Describedpogo barrel 14 can be made by any suitable material, is preferably made by polyimide material.

Draughtline 8 near-ends are fixed on joystick 2, and joystick 2 is provided with adjusting device, adjust the bending of flexible ends by adjusting device.

Wire 6 as shown in Fig. 2,3, extends to byguidewire lumen 10 in the guidewire lumen of annular ring 4, and the far-end of describedwire 6 is connected with electrode 5 respectively.Wire 6 far-ends are fixed by welding on electrode 5, andtemperature sense line 7 far-ends bury in electrode 5 times, and the far-end of describedtemperature sense line 7 is fixed on described electrode 5 by bonding, welding or other suitable mode.Extend in conduit pipe shaft 1 in theguidewire lumen 10 oftemperature sense line 7 in flexible ends 3, extend out by described joystick 2 at last, be connected with attemperating unit.

Described conduit in use by joystick 2, is handled describeddraught line 8, make described flexible ends 3 deflect, annular ring 4 is delivered to pulmonary orifice, make the described electrode 5 can be fully adherent with pulmonary artery, this moment, described electrode 5 melts on the pulmonary artery inwall again.

The multipole discharge pulmonary artery radio frequency ablation catheter that this utility model provides, the multi-electrode design can improve ablation effect and safety; Can realize signal of telecommunication analysis and preferably carry out the purpose that a plurality of electrodes melt simultaneously.The target accuracy that effective raising is melted, the timely judgement of ablation effect are also saved operating time.

Embodiment 2

The multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension comprises joystick 2, pipe shaft 1 and annular ring 4, and described joystick 2 is provided with adjusting device; Described pipe shaft 1 is hollow structure, in establish cavity, be provided withwire 6,temperature sense line 7 anddraught line 8 in cavity, one end of pipe shaft has flexibility, and this flexible ends 3 is connected with annular ring 4, and the other end of pipe shaft is connected with joystick 2, one end ofdraught line 8 is connected with flexible ends 3, the other end is connected with adjusting device on joystick, controls the tensioning degree of draught line by adjusting device, realizes the radian of flexible ends is controlled; Can allow like this hand control handle of operator, adjust easily the bending of described flexible ends, make the electrode on annular ring can be fully adherent with pulmonary artery, realize that the pulmonary artery inwall melts.Be provided with shape-memory wire 12 in annular ring, one end of this shape-memory wire extends to the tip of annular ring 4, the root that the other end passes annular ring is fixed in the flexible ends 3 of pipe shaft, annular ring is provided with the electrode group, each electrode 5 all is connected with the temperature sense line with wire and is connected, and all can be used in and extract electroneurographic signal, sense temperature and implementation and melt.Describedwire 6 andtemperature sense line 7 pass pipe shaft 1 and are electrically connected to joystick 2.Joystick 2 can external attemperating unit.

The flexible ends 3 of described pipe shaft arranges groove, is provided withconnector 11 in groove, and an end of described connector is connected withdraught line 8, and the other end is connected with shape-memory wire 12.

Described pipe shaft flexible ends adopts medical macromolecular materials to make, and length is 30-80mm, such as: the materials such as fluorine class, polyesters, polyurethane, polyamide, polyimides.

Described connected mode is to connect by ultraviolet curing glue.

Junction sealing between described pipe shaft flexible ends and annular ring.

Described draught line is made by rustless steel or Nitinol, and the draught line outer cover has turn 13, and the turn outer cover haspogo barrel 14, and pogo barrel is made by polyimide material.

It is described that embodiment of the present utility model is not limited to above-described embodiment; in the situation that do not depart from spirit and scope of the present utility model; those of ordinary skills can make various changes and improvements to this utility model in form and details, and these all are considered to fall into protection domain of the present utility model.

Claims

1. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension, is characterized in that comprising joystick (2), pipe shaft (1) and annular ring (4), and described joystick (2) is provided with adjusting device; Described pipe shaft (1) is hollow structure, in establish cavity, be provided with wire (6), temperature sense line (7) and draught line (8) in cavity, one end of pipe shaft has flexibility, and this flexible ends (3) is connected with annular ring (4), and the other end of pipe shaft is connected with joystick (2), one end of draught line (8) is connected with flexible ends (3), the other end is connected with adjusting device on joystick, controls the tensioning degree of draught line by adjusting device, realizes the radian of flexible ends is controlled; Be provided with shape-memory wire (12) in annular ring, one end of this shape-memory wire extends to the tip of annular ring (4), the root that the other end passes annular ring is fixed in the flexible ends (3) of pipe shaft, annular ring is provided with the electrode group, each electrode (5) all is connected 7 with wire with the temperature sense line) be connected, described wire (6) and temperature sense line (7) pass pipe shaft (1) and are electrically connected to joystick (2).

2. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension according to claim 1, it is characterized in that the number of electrodes on annular ring is 3-30, electrode diameter is 1.3～2.0mm, and length is 1.2-4mm, and the Distances Between Neighboring Edge Points of adjacent electrode is 0.5-10mm.

3. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension according to claim 1, the flexible ends that it is characterized in that described pipe shaft is offered counterbore, the root external diameter of annular ring matches with the internal diameter of described counterbore, and the annular ring root is inserted in counterbore and fixes.

4. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension according to claim 1, the flexible ends (3) that it is characterized in that described pipe shaft arranges groove, be provided with connector (11) in groove, one end of described connector is connected with draught line (8), and the other end is connected with shape-memory wire (12).

5. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension according to claim 1, is characterized in that described shape memory filament diameter in annular ring is 0.25-0.5mm, described annular ring diameter 12-40mm.

6. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension according to claim 1, is characterized in that described pipe shaft flexible ends length is 30-80mm.

7. the multipole synchronous radio frequency ablation catheter of according to claim 1～6 arbitrary described treatment pulmonary hypertensions, is characterized in that described connected mode is for to connect by ultraviolet curing glue.

8. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension according to claim 1, is characterized in that the junction sealing between described pipe shaft flexible ends and annular ring.

9. the multipole synchronous radio frequency ablation catheter for the treatment of pulmonary hypertension according to claim 1 is characterized in that described draught line made by rustless steel or Nitinol, and the draught line outer cover has turn (13), and the turn outer cover has pogo barrel (14).