CN102551705B - Auricular tachycardia mapping catheter and preparation method thereof - Google Patents
Auricular tachycardia mapping catheter and preparation method thereof Download PDFInfo
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- CN102551705B CN102551705B CN201210017020.0A CN201210017020A CN102551705B CN 102551705 B CN102551705 B CN 102551705B CN 201210017020 A CN201210017020 A CN 201210017020A CN 102551705 B CN102551705 B CN 102551705B
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Abstract
The invention discloses an auricular tachycardia mapping catheter and a preparation method thereof. The mapping catheter can be used for quickly determining the exact position of a target. The auricular tachycardia mapping catheter is provided with a catheter, the near end of the catheter is connected with a connector, the far end of the catheter is provided with a front end tube of a linear segment and an arc segment, a ring electrode is sleeved on the front end tube, a ring electrode is sleeved on the arc segment, and the end part of the arc segment is connected with an end electrode; and the ring electrodes and the end electrode are electrically connected with a thrusting needle of the connector through leads. The preparation method comprises part preparation and assembly. Compared with the prior art, the mapping catheter has the advantages that the far end of the catheter is provided with the front end tube of the linear segment and the arc segment, the ring electrode is sleeved on the front end tube, the ring electrode is sleeved on the arc segment, the end part of the arc segment is connected with the end electrode, the arc segment is a coronary sinus mapping segment, and the front end tube is used for mapping superior vena cava and right atrium, so that the mapping process is simplified, and the mapping catheter is safe and effective in the whole operation process.
Description
Technical field
The present invention relates to medical apparatus and instruments of a kind of interventional therapy and preparation method thereof, particularly a kind of during for atrial arrhythmia radio-frequency (RF) ablation mapping melt conduit of target spot and preparation method thereof.
Background information
Increasing patient accepts the operation of atrial fibrillation radio-frequency (RF) ablation, and the radio-frequency (RF) ablation that patients with persistent atrial fibrillation and Atrial fibrillation radiofrequency ablation back room speed, room are flutterred remains the difficult point of radiofrequency ablation therapy.During atrial tachycardia outbreak, may relate to superior vena cava, auricle, coronary sinus vein, left atrium position, therefore mapping superior vena cava, high right atrium, coronary sinus near-end and left room posterior inferior wall simultaneously, with facilitate doctor as early as possible clear and definite room speed mechanism and find focus site.Adopt mapping catheter of the prior art, need position one by one to carry out mapping searching target spot, the time of cost is longer.
Summary of the invention
The object of this invention is to provide a kind of Auricular tachycardia mapping catheter and preparation method thereof, the technical problem that solve is the accurate location of quick clear and definite target spot.
The present invention is by the following technical solutions: a kind of Auricular tachycardia mapping catheter, be provided with conduit, the near-end of described conduit is connected with union joint, the far-end of conduit is front tube and the arc section of straightway, in front tube, be equipped with ring electrode, on arc section, be equipped with ring electrode, arc section end is connected with termination electrode; Described ring electrode, termination electrode are electrically connected to the contact pin of union joint through wire.
The near-end of conduit of the present invention is connected with handle, and the proximal end of handle connects union joint.
Termination electrode of the present invention is connected with handle through elastica.
Arc section of the present invention is the double lumen tube of tubulose, and the external diameter of double lumen tube is 2.0-2.8mm, and long is 50-100mm, is put form by two coaxial pipe boxes, and double lumen tube has elasticity, and free state is circular-arc, and the radius of curvature of circular arc is 7-100mm.
Wire of the present invention is arranged between the inner tube and outer tube of double lumen tube, and elastica is arranged in the inner tube of double lumen tube.
The external diameter of front tube of the present invention is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 10-100mm.
The external diameter of conduit of the present invention is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 650-1100mm; Described conduit, front tube and double lumen tube are made for one.
Double lumen tube of the present invention is equipped with the ring electrode of 1-10 ring-type, and the external diameter of ring electrode is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 1-10mm; The distal end of described double lumen tube is equipped with termination electrode, and termination electrode external diameter is 1.40-2.40m, and length is 1-4mm; Between described termination electrode and ring electrode, ring electrode, be spaced apart 3mm, 4mm, 5mm, 6mm or 10mm, or from near-end to far-end press 2mm, 8mm, 2mm ..., or 2mm, 5mm, 2mm ... rule arrange; Described front tube is equipped with a 1-10 ring electrode, the external diameter of ring electrode is 1.40-2.40mm, internal diameter is 1.00-2.00mm, long 1-10mm, between ring electrode, be spaced apart 3mm, 4mm, 5mm, 6mm or 10mm, or from near-end to far-end press 2mm, 8mm, 2mm ... or 2mm, 5mm, 2mm ... rule arrange; Between the most proximal end ring electrode of described double lumen tube and the distal-most end ring electrode of front tube, be spaced apart 10-200mm.
Handle of the present invention is provided with handle case, is provided with motion bar in handle case, and motion bar stretches out the far-end of handle case, is threaded with locking member, and the periphery of motion bar middle part and proximal end has seal groove, is provided with sealing ring in seal groove; The middle part of motion bar has the elongated slot that length dimension direction is consistent with motion bar axis, is provided with the column movable part that axis is vertical with motion bar axis in elongated slot, and movable part can move axially along motion bar in elongated slot; In the near-end of motion bar, handle case, be provided with columned inner core, inner core middle part, be equipped with fixed leg vertical with inner core axes.
A kind of preparation method of Auricular tachycardia mapping catheter, comprise the following steps: one, prepare each part, make conduit, adopt nylon elastomer Pebax5533 pipe, external diameter is 1.40-2.40mm, internal diameter is 1.00-2.00mm, the conduit of long 650-1100mm, after the CSd mapping section brake forming of conduit, bore 1-10 aperture, aperture is spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm, or press 2mm from near-end to far-end, 8mm, 2mm, or 2mm, 5mm, 2mm, rule arrange, at the small pitch of coronary sinus mapping section most proximal end from 10-200mm place, start to bore 1-10 aperture, aperture is spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm, or press 2mm from near-end to far-end, 8mm, 2mm, or 2mm, 5mm, 2mm, rule is arranged, termination electrode adopts rustless steel or platinumiridio, and external diameter is 1.40-2.40mm, and length is 1-4mm, ring electrode adopts rustless steel or platinumiridio, and external diameter is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 1-10mm, and the quantity of ring electrode is 2-20, make wire, by copper wire diameter be 0.1-0.5mm, the line 650-1100mm of external belt polyurethane coating, polyurethane coating is peelled off at two ends, exposes copper cash 0.2cm, obtains wire, it is 0.20-0.40mm that elastica adopts diameter, the nitinol wires that length is 650-1100mm.Handle case, locking member, motion bar, inner core material are acetal resin, by prior art injection moulding, obtain, movable part material is rustless steel, by prior art processing, obtain, fixed leg is aluminium alloy, by prior art processing, obtain, it is 0.5mm that sealing ring adopts external diameter, the silicone rubber O-ring that thickness is 0.1mm; The mould of described coronary sinus mapping section is thread, far-end is the sweep of one section of circular arc, the radius of curvature of sweep is 70-100mm, mould is penetrated in conduit, by conduit, in 20-100 time second to heating-up temperature, be 100-300 ℃, be 100-800 second heat time heating time, and be 100-800 second cool time, from conduit, extracts mould out; Two, one end of every wire is welded to respectively in termination electrode one end and ring electrode, and one end of elastica is welded to termination electrode one end, the wire other end is put in respectively to conduit from aperture, a wire of link electrode, the other end of elastica are put in to conduit from the far-end of conduit, the ring electrode that is welded with wire is nested with on far-end mapping catheter, the termination electrode that is welded with wire, elastica is contained in to far-end mapping catheter end; Two sealings 8 are respectively charged in the seal groove of two of motion bars, wire, the elastica other end are pulled out from catheter proximal end; Inner core is packed in handle case, fixed leg is assemblied in the second orifice of handle case and the blind hole of inner core, elastica and wire are passed respectively to motion bar, the elastica other end is fixed on fixed leg, motion bar is inserted in handle case, movable part is screwed in to the hole of motion bar, and put in elongated slot, locking member is spun on to motion bar distal end; Union joint is inserted in the hole of handle case near-end, wire is solder-connected to respectively in the contact pin of union joint, completes the making of Auricular tachycardia mapping catheter.
The present invention compared with prior art, the far-end of conduit is front tube and the arc section of straightway, in front tube, be equipped with ring electrode, on arc section, be equipped with ring electrode, arc section end is connected with termination electrode, and arc section is coronary sinus mapping section, front tube mapping superior vena cava and right room, simplify mapping process, make in whole operation process more safe and effective.
Accompanying drawing explanation
Fig. 1 is Auricular tachycardia mapping catheter structural representation of the present invention.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is handle arrangement schematic diagram of the present invention.
Fig. 4 is handle case structural representation of the present invention.
Fig. 5 is locking member structural representation of the present invention.
Fig. 6 is motion bar structural representation of the present invention.
Fig. 7 is the B portion enlarged drawing of Fig. 6.
Fig. 8 is core arrangement schematic diagram of the present invention.
Fig. 9 is the right view of Fig. 8.
Figure 10 is fixed leg structural representation of the present invention.
Figure 11 is movable part structural representation of the present invention.
Figure 12 is union joint structural representation of the present invention.
Figure 13 is CSd mapping section die figure of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.As shown in Figure 1, Auricular tachycardia mapping catheter of the present invention, is provided with conduit 5, and the near-end of conduit 5 is connected with handle 16, and the proximal end of handle 16 is connected with union joint 13, and the far-end of conduit 5 is mapping catheter.Mapping catheter is connected and composed by straightway and arc section, and arc section is positioned at the distal end of conduit.Straightway is the front tube 4 of tubulose, is equipped with the ring electrode 1 of ring-type in front tube 4.Arc section is the double lumen tube 3 of tubulose, is equipped with the ring electrode 1 of ring-type on double lumen tube 3, and distal end is connected with columned termination electrode 2.Straightway is for mapping superior vena cava and right room.Arc section is coronary sinus mapping section, for mapping coronary sinus.
The external diameter of double lumen tube 3 is 2.0-2.8mm, launches the long 50-100mm of being, is put form by two coaxial pipe boxes, and the internal diameter of inner tube is 0.2mm-0.8mm, and the internal diameter of outer tube is 0.5mm-1.2mm.Double lumen tube 3 has elasticity, can stretch, and free state is circular-arc, and the radius of curvature of circular arc is 7-100mm.
The outside of double lumen tube 3 is nested with the ring electrode 1 that 1-10 ring-type is housed, the axis of ring electrode 1 and double lumen tube 3 axis coaxles.The external diameter of ring electrode 1 is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 1-10mm.The distal end of double lumen tube 3 is equipped with the termination electrode 2 of column, and termination electrode 2 external diameters are 1.40-2.40m, and length is 1-4mm.Between termination electrode 2 and ring electrode 1, ring electrode 1, be spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm, or from near-end to far-end press 2mm, 8mm, 2mm ..., or 2mm, 5mm, 2mm ... rule arrange.Termination electrode 2 and ring electrode 1 adopt rustless steel or platinumiridio.
The external diameter of front tube 4 is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 10-100mm.
The outside of front tube 4 is nested with ring electrode 1, the axis of ring electrode 1 and front tube 4 axis coaxles that a 1-10 ring-type is housed.The external diameter of ring electrode 1 is 1.40-2.40mm, internal diameter is 1.00-2.00mm, long 1-10mm, is spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm between ring electrode 1, or from near-end to far-end press 2mm, 8mm, 2mm ... or 2mm, 5mm, 2mm ... rule arrange.
Interval X between the most proximal end ring electrode 1 of double lumen tube 3 and the distal-most end ring electrode 1 of front tube 4 is 10-200mm.
The external diameter of conduit 5 is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 650-1100mm.
The interior one end that is welded to connect respectively wire 14 of ring electrode 1, termination electrode 2 one end are welded to connect respectively one end of a wire 14 and one end of elastica 15, the other end of wire 14 is welded to connect respectively on the contact pin of union joint 13, and the other end of elastica 15 is connected on handle 16.Union joint 13 is electrically connected to and leads instrument more through wire, leads instrument more and reads the intracardiac signal of telecommunication by termination electrode 2 and ring electrode 1.Wire 14 adopts the copper cash that is coated with insulating barrier, for transmitting the intracardiac signal of telecommunication.Elastica 15 adopts stainless steel silk or other tinsels, for preventing that Auricular tachycardia mapping catheter from coming off from coronary sinus mapping section end sending into termination electrode 2 when stressed in the situation that active force is larger.
As shown in Figure 2, wire 14 is arranged between the inner tube and outer tube of double lumen tube 3, and elastica 15 is arranged in the inner tube of double lumen tube 3, damages the wire 14 in arc section when preventing from drawing elastica 15 to regulate arc section.
As shown in Figure 3, handle 16 is provided with handle case 12, is provided with motion bar 7 in handle case 12, and handle case 12 is coaxial with motion bar 7, and motion bar 7 stretches out the far-end of handle case 12, is threaded with locking member 6.The periphery of motion bar 7 middle parts and proximal end has seal groove, is provided with silicone rubber O-ring 8 in seal groove, for sealing handle case 12 endoporus and motion bar 7 outer rims.The middle part of motion bar 7 has the elongated slot that length dimension direction is consistent with motion bar 7 axis, is provided with the column movable part 9 that axis is vertical with motion bar 7 axis in elongated slot, and movable part 9 can move axially along motion bar 7 in elongated slot.In the near-end of motion bar 7, handle case 12, be provided with columned inner core 10, handle case 12 is coaxial with inner core 10, inner core 10 middle parts, be equipped with fixed leg 11 vertical with inner core 10 axis.
As shown in Figure 4, handle case 12, for the inner hollow cylindrical moulding that is shoulder hole, progressively increases from handle case 12 far-ends to near-end aperture, is respectively the first hole 17, the second hole 18, the 3rd hole 19.On the hole wall in the first hole 17, have on the hole wall in the first screw 20, the second holes 18 and have second orifice 21.The interior motion bar 7 that arranges in the first hole 17, the movable part 9 arranging in motion bar 7 elongated slots puts in the first screw 20.The interior inner core 10 that arranges in the second hole 18, the fixed leg 11 passing on inner core 10 puts in second orifice 21.Union joint 13 is installed for placing in the 3rd hole 19.
As shown in Figure 5, locking member 6 is tubular, and endoporus is screw, is connected with motion bar 7 distal threads, locks junction after putting in motion bar 7 distal ends for the near-end of conduit 5.
As shown in Figure 6 and Figure 7, motion bar 7 is tubular, and the periphery of middle part and proximal end has the elongated slot 24 that has 10-20cm between seal groove 22,23, two seal grooves, and movable part 9 parts are inserted in elongated slot, and another part puts in the first screw 20.Motion bar 7 distal ends are external screw thread 25 structures, and for being threaded with locking member 6, one section of end has cross recess 26, facilitates the near-end of conduit 5 to put in motion bar 7 far-ends.External screw thread 25 near-ends are the flange 27 that external diameter is greater than motion bar 7 external diameters, for pushing the handle case 12(motion bar 7 of pulling back).
As shown in Figure 8 and Figure 9, inner core 10 is cylindric, along axis, has through hole 28, for elastica 15, passes.Cylinder middle part is drilled with blind hole 29 with axis vertical direction, and fixed leg 11 inserts in blind hole 29, and fixed leg 11 another part put in second orifice 21.On cylindric inner core 10, with 180 ° of symmetric positions of blind hole on, have first groove 30 parallel with inner core 10 axis, for passing in wire 14.The end of inner core 10 has the second groove 31, is convenient to exactly and inner core 10 is sent into the interior location of handle case 12.
As shown in figure 10, fixed leg 11 one end have three-flute 32, for instrument (as straight screwdriver) operation rotation fixed leg 11.Fixed leg 11 other ends have three aperture 33 vertical with fixed leg 11 axis, for the through hole 28 with on inner core 10, coordinate elastica 15 is passed, and elastica 15 is wound around to 2 circles according to clockwise direction on fixed leg 11, elastica 15 one end can be fixed on fixed leg 11.
As shown in figure 11, movable part 9 is column, and outside is external thread structure, for being connected with the first screw 20, at end face, has interior hexagonal hole, facilitates inner hexagon spanner that movable part 9 is screwed in the first screw 20.
Elastica 15 is by the inner chamber of conduit 5, and the endoporus that passes locking member 6 and motion bar 7 is connected on the fixed leg 11 of inner core 10.The fixing flange 27 of motion bar 7, to far-end pushing handle shell 12, reach the object that promotes motion bar 7 to near-end, handle case 12 changes with the total length of the motion bar 7 stretching out, fixed leg 11 tension elasticas 15, there is the Bending Deformation of 0-90 degree in front tube 4, thus the coronary sinus mapping section of far-end is arrived subscribe position can be afterwards with by mapping position close contact.The total length excursion of movable part 9 mobile restriction handle case 12 and the motion bar 7 stretching out in the elongated slot of motion bar 7.
As shown in figure 12, union joint 13 is outsourcing standard component, and the quantity of contact pin is 4-20 pin.
The preparation method of Auricular tachycardia mapping catheter, comprises the following steps:
One, prepare each part, make conduit 5, front tube 4 and double lumen tube 3, adopt the nylon elastomer Pebax5533 conduit of U.S. Arkema, front tube and double lumen tube integral tube, the external diameter of conduit and front tube is 1.40-2.40mm, internal diameter is 1.00-2.00mm, long 660-1200mm, front end pipe range 10-100mm, double lumen tube external diameter is 2.0-2.8mm, long is 50-100mm, after the CSd mapping section brake forming of conduit, bore 1-10 aperture, aperture is spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm, or press 2mm from near-end to far-end, 8mm, 2mm, or 2mm, 5mm, 2mm, rule arrange, at the small pitch of coronary sinus mapping section most proximal end from 10-200mm place, start to bore 1-10 aperture, aperture is spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm, or press 2mm from near-end to far-end, 8mm, 2mm, or 2mm, 5mm, 2mm, rule is arranged.Termination electrode 2 adopts the village to believe ten thousand rich trade (Shenzhen) company limited's rustless steels or platinumiridio (90% platinum 10% iridium), and external diameter is 1.40-2.40mm, the cylindrical end electrode that length is 1-4mm.Ring electrode 1 adopts upper marine gram of metal trade Co., Ltd rustless steel or platinumiridio (90% platinum 10% iridium), and external diameter is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, the ring electrode of long 1-10mm, and the quantity of ring electrode is 2-20.The copper wire diameter of making the wire 14，Jiang U.S. MWS wire MWS WIRE INDUSTRIES of company is 0.1-0.5mm, the line 650-1100mm of external belt polyurethane coating, and polyurethane coating is peelled off at two ends, exposes copper cash 0.2cm, obtains wire.The diameter that elastica 15 adopts is 0.20-0.40mm, the nitinol wires that length is 650-1100mm.Handle case 12, locking member 6, motion bar 7, inner core 10 materials are acetal resin, by prior art injection moulding, obtain, movable part 9 materials are rustless steel, by prior art processing, obtain, fixed leg 11 is aluminium alloy, by prior art processing, obtain, it is 0.5mm that sealing ring 8 adopts external diameter, the silicone rubber O-ring that thickness is 0.1mm.
As shown in figure 13, the mould of the CSd mapping section of Auricular tachycardia mapping catheter is thread, and far-end is the sweep of one section of circular arc, and the radius of curvature of sweep is 70-100mm.The moulding process of coronary sinus mapping section is: mould is penetrated in conduit, conduit is positioned on the BS-50 type thermoforming machine of Shenzhen Xin Shuanke Industrial Co., Ltd. manufacture, the heating-up temperature of 20-100 time second to thermoforming machine is 100-300 ℃, be 100-800 second heat time heating time, be 100-800 second cool time, from conduit, extract mould out, obtain the CSd mapping section of molding.The best be 250 second time to 250 ℃ of temperature, be 500 seconds heat time heating time, be 500 seconds cool time.
Two, one end of every wire 14 is welded to respectively in termination electrode 2 one end and ring electrode 1, and one end of elastica 15 is welded to termination electrode 2 one end, wire 14 other ends are put in respectively to conduit 5 from aperture, the other end of a wire 14 of link electrode 2, elastica 15 is put in to conduit 5 from the far-end of conduit 5, the ring electrode 1 that is welded with wire 14 is nested with on far-end mapping catheter, the termination electrode 2 that is welded with wire 14, elastica 15 is contained in to far-end mapping catheter end.With size and the equirotal wild card instrument of ring electrode 1 external diameter, ring electrode 1 clamping is fixed on far-end mapping catheter, with medical grade glue, termination electrode 2 is adhesively fixed on far-end mapping catheter.Two sealing rings 8 are respectively charged in the seal groove of 7 two of motion bars, utilize guide line that wire 14, elastica 15 other ends are pulled out from conduit 5 near-ends.Elastica 15 is inserted in the steel pipe of internal diameter 0.8～1.0mm, wire 14 is inserted in the steel pipe of internal diameter 1.8～2.0mm.Inner core 10 is packed in handle case 12, then fixed leg 11 is assemblied in the second orifice of handle case 12 and the blind hole 28 of inner core 10.Two steel pipes are passed respectively from handle case 12, inner core 10, take out steel pipe, now elastica 15 and wire 14 are respectively through motion bar 7.Elastica 15 other ends coordinate elastica 15 are passed with through hole 28 on inner core 10, and elastica 15 is wound around to 2 circles at fixed leg 11 according to clockwise direction rotation, can be elastica 15 fixing and lockings on fixed leg 11 cylindric.Be fixed on fixed leg 11, motion bar 7 is inserted in handle case 12, promote motion bar 7 to handle case 12 medium positions, use inner hexagon spanner movable part 9 to be screwed in to the first screw 20 of motion bar 7, and put in elongated slot 24, motion bar 7 is pushed to distal-most end, use a word to change cutter rotation fixed leg 11, cut off unnecessary elastica 15, be tightened on again motion bar 7 distal ends coat the safe glue M-31CL of the pleasure glue of Le Tai glue group at locking member 6 after.Union joint 13 is inserted in the hole of handle case 12 near-ends, and the other end of wire 14, according to the position pre-setting, is solder-connected to respectively in the contact pin of union joint 13, screws the shell of union joint 13, completes the making of Auricular tachycardia mapping catheter.
When doctor performs the operation, the mapping catheter of Auricular tachycardia mapping catheter is penetrated in general sheath pipe body, treat that mapping catheter all enters in sheath pipe body, inserting and escort in pipe in sheath pipe body, by escorting pipe, Auricular tachycardia mapping catheter is delivered to mapping and subscribe position, Auricular tachycardia mapping catheter is released and escorted pipe, under X-ray, observe Auricular tachycardia mapping catheter far-end and be CSd state, promote motion bar, sealing ring in motion bar is sticked together closely with handle case inner chamber, the elongated slot that has 10-20cm in motion bar, promote motion bar moves movable part in the scope of motion bar elongated slot, regulate motion bar position, fixed leg tension elastica, the front tube deformation that bends, make the myocardial sites close contact of the CSd mapping Duan Yuxu mapping of Auricular tachycardia mapping catheter, if ring electrode can not close contact to the position that needs mapping, can rotary handle certain angle, make conduit follow the angle of rotatable handle consistent, handling front tube turns to, reach ring electrode and the myocardium position close contact state for the treatment of mapping, the fixing CSd mapping section of Auricular tachycardia mapping catheter.In order to determine accurately mark point position, carry out, before mapping, first by angiography catheter, local radiography being carried out in intracardiac position, until accurately judging behind mapping position, Auricular tachycardia mapping catheter is connected to and is led instrument more by general connecting line, can carry out mapping.The coronary sinus mapping section of Auricular tachycardia mapping catheter is consistent with the coronary sinus shape of heart, therefore can realize the mapping at heart coronaries hole position.After coronary sinus mapping location positioning, Auricular tachycardia mapping catheter straightway just can arrive superior vena cava and right atrium position, thereby realizes the mapping of superior vena cava and right atrium.
Embodiment 1: Canis familiaris L. live body, healthy public Canis familiaris L., 20 kilograms of body weight, 2 years old age.One of Auricular tachycardia mapping catheter of the present invention, the diameter of coronary sinus mapping section is 15mm, and each ring electrode length is 1mm, and external diameter is 1.2mm, 9 of number of electrodes, the length of termination electrode is 2mm, external diameter is 1.2mm, is spaced apart 5mm.The length of straight section ring electrode is 1mm, and external diameter is 2.33mm, and number of electrodes is 10, is spaced apart 5mm.The most first end ring electrode of straightway and coronary sinus mapping section proximal loop electrode be spaced apart 100mm.Auricular tachycardia mapping catheter is entered respectively to superior vena cava, auricle, coronary sinus vein, left atrium through escorting pipe, under Siemens DSAX ray monitors, first push union joint, make the CSd mapping section of Auricular tachycardia mapping catheter arrive superior vena cava, and make coronary sinus mapping section be released to orifice of superior vena cava completely at orifice of superior vena cava, driving handle, deforms straight section ring electrode, allows straight section ring electrode be close to inside, atrium and carries out mapping.In driving handle process, by angiography catheter injection of contrast medium, accurately judge superior vena cava and intra-auricular mapping situation.The value of each utmost point of mapping of coronary sinus starts as 75bpm, 80bpm, 74bpm, 89bpm, 91bpm, 84bpm, 97bpm, 73bpm, 94bpm, 81bpm from far-end, and this is worth all within normal range.As can be seen here, the coronary sinus mapping of Auricular tachycardia mapping catheter of the present invention meets the demands.The value of the superior vena cava of straightway mapping and each utmost point of right atrium starts as 86bpm, 89bpm, 70bpm, 91bpm, 96bpm, 75bpm, 79bpm, 80bpm, 81bpm, 95bpm from far-end, and this value is all in normal range 60～100bpm.As can be seen here, the straightway mapping of Auricular tachycardia mapping catheter of the present invention meets the demands.
From embodiment 1, the mapping of Auricular tachycardia mapping catheter of the present invention meets the demands, mapping completed with interior in half an hour, adopt Auricular tachycardia mapping catheter of the present invention to carry out in superior vena cava, auricle, coronary sinus vein, left atrium mapping, can greatly shorten operating time, mapping is reliable, reduces clear and definite target position and ablation energy while melting, simple in structure, facilitate operative doctor operation.
Claims (8)
1. an Auricular tachycardia mapping catheter, be provided with conduit (5), the near-end of conduit (5) is connected with handle (16), the proximal end of handle (16) connects union joint (13), the far-end of conduit (5) is arc section, on arc section, be equipped with ring electrode (1), arc section end is connected with termination electrode (2), ring electrode (1), termination electrode (2) is electrically connected to the contact pin of union joint (13) through wire (14), it is characterized in that: front tube (4) and arc section that the far-end of described conduit (5) is straightway, in front tube (4), be equipped with ring electrode (1), described handle (16) is provided with handle case (12), in handle case (12), be provided with motion bar (7), motion bar (7) stretches out the far-end of handle case (12), be threaded with locking member (6), the periphery of motion bar (7) middle part and proximal end has seal groove, is provided with sealing ring (8) in seal groove, the middle part of motion bar (7) has the elongated slot that length dimension direction is consistent with motion bar (7) axis, is provided with the column movable part (9) that axis is vertical with motion bar (7) axis in elongated slot, and movable part (9) can move axially along motion bar (7) in elongated slot, in the near-end of motion bar (7), handle case (12), be provided with columned inner core (10), inner core (10) middle part, be equipped with fixed leg (11) vertical with inner core (10) axis.
2. Auricular tachycardia mapping catheter according to claim 1, is characterized in that: described termination electrode (2) is connected with handle (16) through elastica (15).
3. Auricular tachycardia mapping catheter according to claim 2, it is characterized in that: the double lumen tube that described arc section is tubulose (3), the external diameter of double lumen tube (3) is 2.0-2.8mm, long is 50-100mm, by two coaxial pipe boxes, put and form, double lumen tube (3) has elasticity, and free state is circular-arc, and the radius of curvature of circular arc is 7-100mm.
4. Auricular tachycardia mapping catheter according to claim 3, is characterized in that: described wire (14) is arranged between the inner tube and outer tube of double lumen tube (3), and elastica (15) is arranged in the inner tube of double lumen tube (3).
5. Auricular tachycardia mapping catheter according to claim 4, is characterized in that: the external diameter of described front tube (4) is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 10-100mm.
6. Auricular tachycardia mapping catheter according to claim 5, is characterized in that: the external diameter of described conduit (5) is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 650-1100mm; Described conduit (5), front tube (4) and double lumen tube (3) are made for one.
7. Auricular tachycardia mapping catheter according to claim 6, is characterized in that: described double lumen tube (3) is equipped with the ring electrode (1) of 1-10 ring-type, and the external diameter of ring electrode (1) is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 1-10mm; The distal end of described double lumen tube (3) is equipped with termination electrode (2), and termination electrode (2) external diameter is 1.40-2.40m, and length is 1-4mm; Between described termination electrode (2) and ring electrode (1), ring electrode (1), be spaced apart 3mm, 4mm, 5mm, 6mm or 10mm, or from near-end to far-end press 2mm, 8mm, 2mm ..., or 2mm, 5mm, 2mm ... rule arrange; Described front tube (4) is equipped with a 1-10 ring electrode (1), the external diameter of ring electrode (1) is 1.40-2.40mm, internal diameter is 1.00-2.00mm, long 1-10mm, between ring electrode (1), be spaced apart 3mm, 4mm, 5mm, 6mm or 10mm, or from near-end to far-end press 2mm, 8mm, 2mm ... or 2mm, 5mm, 2mm ... rule arrange; Between the most proximal end ring electrode (1) of described double lumen tube (3) and the distal-most end ring electrode (1) of front tube (4), be spaced apart 10-200mm.
8. the preparation method of an Auricular tachycardia mapping catheter, comprise the following steps: one, prepare each part, make conduit, adopt nylon elastomer Pebax5533 pipe, external diameter is 1.40-2.40mm, internal diameter is 1.00-2.00mm, the conduit of long 650-1100mm, after the CSd mapping section brake forming of conduit, bore 1-10 aperture, aperture is spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm, or press 2mm from near-end to far-end, 8mm, 2mm, or 2mm, 5mm, 2mm, rule arrange, at the small pitch of coronary sinus mapping section most proximal end from 10-200mm place, start to bore 1-10 aperture, aperture is spaced apart uniformly-spaced 3mm, 4mm, 5mm, 6mm or 10mm, or press 2mm from near-end to far-end, 8mm, 2mm, or 2mm, 5mm, 2mm, rule is arranged, termination electrode adopts rustless steel or platinumiridio, and external diameter is 1.40-2.40mm, and length is 1-4mm, ring electrode adopts rustless steel or platinumiridio, and external diameter is 1.40-2.40mm, and internal diameter is 1.00-2.00mm, long 1-10mm, and the quantity of ring electrode is 2-20, make wire, by copper wire diameter be 0.1-0.5mm, the line 650-1100mm of external belt polyurethane coating, polyurethane coating is peelled off at two ends, exposes copper cash 0.2cm, obtains wire, it is 0.20-0.40mm that elastica adopts diameter, the nitinol wires that length is 650-1100mm, handle case, locking member, motion bar, inner core material are acetal resin, by prior art injection moulding, obtain, movable part material is rustless steel, by prior art processing, obtain, fixed leg is aluminium alloy, by prior art processing, obtain, it is 0.5mm that sealing ring adopts external diameter, the silicone rubber O-ring that thickness is 0.1mm, the mould of described coronary sinus mapping section is thread, far-end is the sweep of one section of circular arc, the radius of curvature of sweep is 70-100mm, mould is penetrated in conduit, by conduit, in 20-100 time second to heating-up temperature, be 100-300 ℃, be 100-800 second heat time heating time, and be 100-800 second cool time, from conduit, extracts mould out, two, one end of every wire is welded to respectively in termination electrode one end and ring electrode, and one end of elastica is welded to termination electrode one end, the wire other end is put in respectively to conduit from aperture, a wire of link electrode, the other end of elastica are put in to conduit from the far-end of conduit, the ring electrode that is welded with wire is nested with on far-end mapping catheter, the termination electrode that is welded with wire, elastica is contained in to far-end mapping catheter end, two sealings 8 are respectively charged in the seal groove of two of motion bars, wire, the elastica other end are pulled out from catheter proximal end, inner core is packed in handle case, fixed leg is assemblied in the second orifice of handle case and the blind hole of inner core, elastica and wire are passed respectively to motion bar, the elastica other end is fixed on fixed leg, motion bar is inserted in handle case, movable part is screwed in to the hole of motion bar, and put in elongated slot, locking member is spun on to motion bar distal end, union joint is inserted in the hole of handle case near-end, wire is solder-connected to respectively in the contact pin of union joint, completes the making of Auricular tachycardia mapping catheter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210017020.0A CN102551705B (en) | 2012-01-19 | 2012-01-19 | Auricular tachycardia mapping catheter and preparation method thereof |
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| CN201210017020.0A CN102551705B (en) | 2012-01-19 | 2012-01-19 | Auricular tachycardia mapping catheter and preparation method thereof |
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| CN102908204A (en) * | 2012-10-25 | 2013-02-06 | 中国中医科学院广安门医院 | Establishing method for rabbit sinus node chronic injury model and special electrode for implementing establishing method |
| EP3094234A1 (en) * | 2014-01-13 | 2016-11-23 | Boston Scientific Scimed, Inc. | Medical devices for mapping cardiac tissue |
| CN104771162A (en) * | 2015-05-04 | 2015-07-15 | 中国人民解放军总医院 | Heart electricity information mapping electrode |
| CN105919589B (en) * | 2016-05-27 | 2018-12-18 | 深圳市惠泰医疗器械有限公司 | The head end of belt sensor has the magnetic orientation Circumferential catheter conduit of coiled spiral structure |
| CN108272450A (en) * | 2017-01-05 | 2018-07-13 | 四川锦江电子科技有限公司 | A kind of miniature multipole mapping catheter |
| CN110151172A (en) * | 2019-06-12 | 2019-08-23 | 深圳市惠泰医疗器械有限公司 | The curved mapping electrode catheter in coronary sinus space |
| CN110251123A (en) * | 2019-07-09 | 2019-09-20 | 深圳市惠泰医疗器械有限公司 | Can simultaneously coordination electrode conduit two kinds of bendings of head end control mechanism |
| CN115137466A (en) * | 2022-07-11 | 2022-10-04 | 洲瓴(上海)医疗器械有限公司 | Electrode catheter for pulse electric field ablation |
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| US6308090B1 (en) * | 1998-03-09 | 2001-10-23 | Irvine Biomedical, Inc. | Devices and methods for coronary sinus mapping |
| US6064905A (en) * | 1998-06-18 | 2000-05-16 | Cordis Webster, Inc. | Multi-element tip electrode mapping catheter |
| US7039450B2 (en) * | 2002-11-15 | 2006-05-02 | Biosense Webster, Inc. | Telescoping catheter |
| US7142903B2 (en) * | 2003-03-12 | 2006-11-28 | Biosense Webster, Inc. | Catheter with contractable mapping assembly |
| CN102274018B (en) * | 2011-05-23 | 2014-07-09 | 成正辉 | Fast-switching and mapping catheter, and preparation method and application method thereof |
| CN202739997U (en) * | 2012-01-19 | 2013-02-20 | 赖珩莉 | Atrial tachycardia mapping catheter |
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