CN102579031B - Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter - Google Patents
Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter Download PDFInfo
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- CN102579031B CN102579031B CN201210016616.9A CN201210016616A CN102579031B CN 102579031 B CN102579031 B CN 102579031B CN 201210016616 A CN201210016616 A CN 201210016616A CN 102579031 B CN102579031 B CN 102579031B
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Abstract
The invention discloses a right ventricular outflow tract mapping and angiographic catheter and a preparation method of the angiographic catheter, and aims to solve the technical problem that an exact position of a target cannot be accurately positioned in the prior art. The right ventricular outflow tract mapping catheter disclosed by the invention is provided with a catheter. The end part of the far end of the catheter is provided with a mapping section. The mapping section is an open O-shaped ring in a free state. An end electrode is arranged at the end part of the mapping section. A ring electrode is arranged on the surface of the mapping section. The near end of the catheter is connected with a connector. The connector is electrically connected with the ring electrode and the end electrode by wires. The preparation method disclosed by the invention comprises the following steps: making parts; and assembling the parts. Compared with the prior art, the end part of the far end of the mapping catheter is provided with the mapping section which is of an O-shaped structure; the mapping section has elasticity and can be strengthened, so that the right ventricular outflow tract mapping and angiographic catheter is convenient to rapidly feed and the operating time is shortened; the mapping section is of an O-shaped structure in the free state; and the ring electrode on the mapping section which is of an O-shaped structure can define the position of the target and the ablation energy in the ablation process by mapping the right ventricular outflow tract, so that the right ventricular outflow tract mapping and angiographic catheter is safer and more effectively and is convenient to operate in the complete operating process.
Description
Technical field
The present invention relates to a kind of medical surgical instrument and preparation method thereof, particularly a kind of for ARR mapping catheter of interventional therapy and preparation method thereof.
Background technology
Ventricular arrhythmia particularly ventricular premature contraction is clinical modal arrhythmia.Long-term Drug therapy side effect is large and curative effect is not good enough.In recent years, the patient who accepts the ventricular arrhythmia radiofrequency ablation therapy under three-dimensional mapping systematic direction is more and more, but success rate of operation is not from 50-90% etc.In art, can find effectively, rapidly target spot is the key that determines success rate of operation.For ventricular arrhythmia particularly for ventricular premature contraction, the incidence rate of efferent tract chamber chamber speed morning is up to more than 60%, get involved doctor and at efferent tract, find target spot according to surface electrocardiogram, three-dimensional mapping system and personal experience, if patient's chamber Zao Huo chamber speed outbreak in art is few, require a great deal of time in mapping.Therefore, the mapping to right ventricular outflow, the target position of the clear and definite mapping of radiography in right ventricle or on valve of pulmonary trunk in mapping, clear and definite target position and ablation energy while melting, be very necessary.
Summary of the invention
The object of this invention is to provide a kind of outflow tract of right ventricle annular mapping and angiography catheter and preparation method thereof, the technical problem that solve is the accurate location that accurately provides target spot.
The present invention is by the following technical solutions: a kind of outflow tract of right ventricle mapping and angiography catheter, be provided with outflow tract of right ventricle mapping catheter and outflow tract of right ventricle angiography catheter, described outflow tract of right ventricle mapping catheter is provided with the conduit of tubulose, the distal end of conduit is connected with the mapping section of tubulose, the O shape loop-shaped that mapping section free state is opening, the plane that O shape circle forms and the axis of conduit are 90-180 ° of angle; The end of described mapping section is provided with termination electrode, on the surface of mapping section, ring electrode is housed; The near-end of described conduit is connected with union joint, and union joint is electrically connected to ring electrode, termination electrode through wire.
The ring electrode of 1-10 ring-type is housed on the surface of mapping section of the present invention, and termination electrode is annular, and termination electrode is connected through safety line with catheter proximal end.
The proximal end of conduit of the present invention is provided with sign pipe outward, and the near-end of sign pipe is connected with union joint.
Mapping section external diameter of the present invention is 1.4-2.4mm, and internal diameter is 1.0-2.0mm, and the O shape circle external diameter that mapping section forms is 10-24mm.
The external diameter of termination electrode of the present invention (5) is 1.4-2.4mm, and internal diameter is 1.0-2.0mm, and length is 1-4mm; Described ring electrode (6) external diameter is 1.4-2.4mm, and internal diameter is 1.0-2.0mm, and length is 1.0-10mm; Electrode be spaced apart 1.0-10mm.
The external diameter of conduit of the present invention is 2.0-2.4mm, and internal diameter is 1.5-2.0mm, and long is 850-1200mm.
Safety line and wire are set in conduit of the present invention.
Outflow tract of right ventricle angiography catheter of the present invention is provided with the angiography catheter body of tubulose, and internal diameter is 0.5-0.8mm, and external diameter is 0.8-1mm, and long is 850-1200mm; One section of 100-400mm bending of distal end of described angiography catheter body, sweep and angiography catheter body 8 are 90-180 ° of angle, and the proximal end of angiography catheter body connects female Luer.
Outflow tract of right ventricle mapping catheter of the present invention packs in sheath pipe, and described sheath pipe is provided with female Luer, and pipe, far-end connecting utricle pipe body are escorted in the connection of female Luer near-end; Described sheath pipe body external diameter is 2.0-2.5mm, and internal diameter is 1.8-2.7mm, and length is 850-1200mm; Described to escort pipe (11) internal diameter be 1.5-2.5mm, and external diameter is 1.7-2.7mm.
A preparation method for outflow tract of right ventricle mapping and angiography catheter, the preparation of outflow tract of right ventricle mapping catheter comprises the following steps: one, make part, conduit employing property nylon material pipe, external diameter is 2.0-2.4mm, and internal diameter is 1.5-2.0mm, and long is 850-1200mm; Make mapping section, by external diameter, be 1.4-2.4mm, internal diameter is 1.0-2.0mm, the remainder that one end of the long stretchy nylon tubes of material for 100-150mm is wound around after a circle on the annular groove of mould is drawn along groove, from room temperature, through 600 second time, be warming up to 400 ℃ of molding heating-up temperatures, be 30 minutes heat time heating time, naturally cool to room temperature, make the mapping section that is O shape circle while freely discharging, O shape circle external diameter is 10-24mm, the plane that O shape circle forms and the axis of conduit 3 are 90-180 ° of angle, in the boring of the end of O shape circle, drilled in middle 1-10 hole; Adopt medical stainless steel or platinumiridio material, by prior art, process annular termination electrode and ring electrode, termination electrode external diameter is 1.4-2.4mm, internal diameter is 1.0-2.0mm, and length is 1-4mm, and ring electrode external diameter is 1.4-2.4mm, internal diameter is 1.0-2.0mm, and length is 1.0-10mm; Sign pipe adopts the heat-shrinkable tube of stretchy nylon material, and external diameter is 0.5-0.8mm, and internal diameter is 0.3-0.6mm; Described mould is cylindrical, on the outer wall of cylindrical middle part, along circumferentially having annular groove, has the groove that is parallel to cylinder axis on the outer wall of annular groove one side; Two, wire employing 1-10 root timber material is copper cash, is of a size of 0.01mm, and copper cash skin is the polyurethane coating of 0.005mm, and wire 11 one end are welded to respectively in ring electrode, and welding temperature is 450 ℃; Material, be stainless steel silk, be of a size of 0.4mm, the safety line 12 of the nylon coating that the outside of stainless steel silk is 0.05mm, welding temperature is 450 ℃, is welded in termination electrode 5; Distal end of catheter is connected with mapping section near-end and adopts welding, from room temperature through 5-10 minute to temperature 350-400 ℃, welding 54-80 second; Sign pipe box is put at conduit 3 near-ends, be warming up to 400 ℃ shrink 3-5 minute at 5-10 minute, after natural cooling, external diameter is 0.2-0.3mm, long for 50-100mm, makes to identify pipe and is fixed to catheter proximal end; The other end of wire 11 and safety line 12 is penetrated from the hole of O shape circle respectively, from catheter proximal end, stretch out; Be nested with ring electrode and termination electrode, the spacing between ring electrode is 1.0-10mm; Wire and safety line are managed through sign, be welded in the contact pin of union joint, complete the making of outflow tract of right ventricle mapping catheter; Described outflow tract of right ventricle angiography catheter preparation comprises the following steps: adopt polyurethane tube, internal diameter is 0.5-0.8mm, external diameter is 0.8-1mm, length, for the end one section 100-400mm bending of 850-1200mm at pipe, was heated to 200 ℃ of forming temperatures from room temperature through 600 second time, and be 200 seconds heat time heating time, naturally cool to room temperature, sweep and angiography catheter body 8 are 90-180 ° of angle, and the other end end of pipe connects female Luer, by prior art glue fusion method for joining, connects.
The present invention compared with prior art, mapping catheter distal end is the mapping section of O shape structure, mapping section has elasticity, can stretch, and fast and easy is sent to, shorten operating time, in free state, be O shape structure, the structural ring electrode of O shape is reliably to right ventricular outflow mapping, so that clear and definite target position and ablation energy while melting, make in whole operation process more safe and effective, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the angiography catheter structural representation of the embodiment of the present invention.
Fig. 3 is the mapping segment structure schematic diagram of the embodiment of the present invention.
Fig. 4 is the conduit profile of the embodiment of the present invention.
Fig. 5 is the union joint structural representation of the embodiment of the present invention.
Fig. 6 is the conduit of the embodiment of the present invention and the assembling schematic diagram of sheath pipe.
Fig. 7 be the embodiment of the present invention escort tubular construction schematic diagram.
Fig. 8 is the mould figure of the mapping section of the embodiment of the present invention.
Fig. 9 is the right view of Fig. 8.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.As shown in Figure 1, outflow tract of right ventricle mapping catheter of the present invention, be provided with the conduit 3 of tubulose, the distal end of conduit 3 is connected with the mapping section 4 of tubulose, mapping section 4 is elasticity, free state after release is the O shape loop-shaped of opening, and the plane that O shape circle forms and the axis of conduit 3 are 90-180 ° of angle.In the end of mapping section 4, be provided with annular termination electrode 5, on the surface of mapping section 4, the ring electrode 6 that quantity is 1-10 ring-type is equipped with at interval, is provided with sign pipe 2 in the proximal end of conduit 3, and the near-end of sign pipe 2 is connected with union joint 1.
Sign pipe 2 adopts the heat-shrinkable tube of stretchy nylon material FEP, and raw material external diameter before contraction is 0.5-0.8mm, and the external diameter after processing is shunk is 0.2-0.3mm, and long is 50-100mm.Sign pipe 2 is for being connected to conduit 3 female Luer 9 of sheath pipe.
As shown in Figure 2, the matched outflow tract of right ventricle angiography catheter of outflow tract of right ventricle mapping catheter of the present invention, is provided with the angiography catheter body 8 of tubulose.Angiography catheter body 8 adopts polyurethane, and internal diameter is 0.5-0.8mm, and external diameter is 0.8-1mm, and long is 850-1200mm.One section of 100-400mm bending of distal end of angiography catheter body 8, sweep and angiography catheter body 8 are 90-180 ° of angle, and the proximal end of angiography catheter body 8 connects female Luer 7.
As shown in Figure 3, mapping section 4 is stretchy nylon material PEBAX, and external diameter is 1.4-2.4mm, and internal diameter is 1.0-2.0mm, and the external diameter of the O shape circle that mapping section 4 forms is 10-24mm.The external diameter of the termination electrode 5 of the distal end of mapping section 4 is 1.4-2.4mm, and internal diameter is 1.0-2.0mm, and length is 1-4mm, and termination electrode 5 adopts medical stainless steel or platinumiridio material.The 1-10 that be equipped with at interval in mapping section 4 ring electrode 6, ring electrode 6 adopts medical stainless steel or platinumiridio material, external diameter is 1.4-2.4mm, internal diameter is 1.0-2.0mm, length is 1.0-10mm, when mapping section 4 is stretched as straight tube-like, the interval between termination electrode and ring electrode, ring electrode (a) is 1.0-10mm.
Conduit 3 adopts stretchy nylon material PEBAX pipe, and external diameter is 2.0-2.4mm, and internal diameter is 1.5-2.0mm, and long is 850-1200mm.As shown in Figure 4, in conduit 3, for safety line 12 and 1-10 root wire 11, pass therethrough, one end of wire 11 is welded to connect with ring electrode 6 respectively, the other end is welded to connect in the contact pin in union joint 1 proximal end, one end of safety line 12 is welded to connect termination electrode 5, and the other end is welded to connect in the contact pin in union joint 1 proximal end.Union joint 1 contact pin is electrically connected to leading instrument more, and ring electrode 6 gathers patient's intracardiac electrical activity signal, and intracardiac electrical activity signal is transferred to and led instrument more by wire 11, union joint 1, leads instrument more and reads the intracardiac signal of telecommunication.Safety line 12, for link electrode and conduit 3 near-ends, under outflow tract of right ventricle mapping catheter stressing conditions, prevents that termination electrode 5 from coming off from mapping section.
As shown in Figure 5, union joint 1 adopts the ten pin single cavity union joints of Lei Mo trade (Shanghai) Co., Ltd..The near-end of union joint 1 is provided with and the plug 15 of leading instrument more and being connected, the parallel contact pin that is distributed with vertically in plug 15, contact pin is connected with safety line 12 with wire 11, the outer Handheld Division 16 that is equipped with of plug 15, the near-end end end of Handheld Division 16 is provided with sign pipe 2, wire 11 and safety line 12 are in sign pipe 2, and the far-end of wire 11 and safety line 12 welds with termination electrode 5 and ring electrode 6 in conduit 3.
During outflow tract of right ventricle mapping catheter operation of the present invention, pack in sheath pipe, push to far-end.As shown in Figure 6, sheath pipe is provided with sheath pipe body 10, and the near-end of sheath pipe body 10 is connected with female Luer 9, female Luer 9 is outsourcing standard component, and the external diameter of sheath pipe body 10 is 2.0-2.5mm, and internal diameter is 1.8-2.7mm, length is 850-1200mm, and sheath pipe body 10 adopts stretchy nylon material PEBAX.
As shown in Figure 7, escort the near-end that pipe 11 is connected to female Luer 9, the material that escorts pipe 11 is polythene PE, and internal diameter is 1.5-2.5mm, and external diameter is 1.7-2.7mm, and female Luer is outsourcing standard component.
The distal end of mapping section 4 stretches into from escorting in the proximal end of managing 11, now mapping section 4 is deployed condition, by the distal end of mapping section 4 to far-end send to make its be arranged on escort pipe 11 in, to escort pipe 11 inserts in sheath pipe again, conduit 3 is followed and is entered sheath pipe body 10, conduit 3 enter completely sheath pipe body 10 interior after, the distal end of sign pipe 2 is connected in the proximal end of female Luer 9, mapping section 4 and conduit 3 can be in the 10 interior rotations of sheath pipe body, mapping section 4 is delivered to behind the reservation position of mapping, mapping section 4 is released to sheath pipe body 10, mapping section 4 discharges contracting and is O shape round state.
The preparation method of outflow tract of right ventricle annular mapping catheter of the present invention, comprises the following steps:
One, make part, conduit 3 adopts the stretchy nylon material PEBAX of U.S. Access Point Technologies US company (www.aptmed.com) pipe, and external diameter is 2.0-2.4mm, and internal diameter is 1.5-2.0mm, and long is 850-1200mm.Make mapping section 4, by external diameter, be 1.4-2.4mm, internal diameter is 1.0-2.0mm, the remainder that one end of the long U.S. stretchy nylon material PEBAX of the Access Point Technologies US company pipe for 100-150mm is wound around after a circle on the annular groove 17 of mould is drawn along groove 18, molding on the thermoforming machine of Shenzhen Huitai Medical Instrument Co., Ltd, from room temperature, through 600 second time, be warming up to 400 ℃ of molding heating-up temperatures, be 30 minutes heat time heating time, naturally cool to room temperature, make the mapping section 4 that is O shape circle while freely discharging, O shape circle external diameter is 10-24mm, the plane that O shape circle forms and the axis of conduit 3 are 90-180 ° of angle, in the boring of the end of O shape circle, drilled in middle 1-10 hole.Manufacturing terminal electrode 5 and ring electrode 6, adopt medical stainless steel or platinumiridio material, by prior art, process annular termination electrode 5 and ring electrode 6, termination electrode 5 external diameters are 1.4-2.4mm, internal diameter is 1.0-2.0mm, and length is 1-4mm, and ring electrode 6 external diameters are 1.4-2.4mm, internal diameter is 1.0-2.0mm, and length is 1.0-10mm.Sign pipe 2 adopts the stretchy nylon material FEP heat-shrinkable tube of ChangYuan Group Ltd., external diameter is 0.5-0.8mm, internal diameter is 0.3-0.6mm, when ducts 3 step, utilize thermal contraction machine to be warming up to 400 ℃ at 5-10 minutes and shrink 3-5 minutes, after natural cooling, external diameter is 0.2-0.3mm, and long is 50-100mm.
As shown in Figure 8 and Figure 9, the mould of manufacturing mapping section 4 is cylindrical, on the outer wall of cylindrical middle part, along circumferentially having annular groove 17, have the groove 18 that is parallel to cylinder axis on the outer wall of annular groove 17 1 sides, the joint of annular groove 17 and groove 18 is for being arc-shaped transition 19.
Two, the 1-10 root timber material of the wire 11 employing U.S. MWS wire MWS WIRE INDUSTRIES of company (www.mwswire.com) is copper cash, be of a size of 0.01mm, copper cash skin is the polyurethane coating of 0.005mm, wire 11 one end are welded to respectively in ring electrode 6 with electric resistance welding, and welding temperature is 450 ℃.By the material of ADVANCED WIRE AND CABLE company (www.advancedwire.com), it is stainless steel silk, be of a size of 0.4mm, the outside of stainless steel silk is that the safety line 12 of nylon coating and one end of a wire 11 of 0.05mm adopts electric resistance welding, welding temperature is 450 ℃, is welded in termination electrode 5.Doubly this special 850+ type thermal contraction machine welding that Grand Technology (Shenzhen) Co., Ltd. produces for conduit 3 far-ends and mapping section 4 near-ends, from room temperature through 5-10 minutes to temperature 350-400 ℃, the time of welding is 54-80 second, is naturally cooled to room temperature.Sign pipe 2 is nested with at conduit 3 near-ends, utilizes thermal contraction machine to be warming up to 350-400 ℃ at 5-10 minutes and shrink 3-5 minutes, after natural cooling, external diameter is 0.2-0.3mm, and long is 50-100mm, makes sign pipe 2 be fixed to conduit 3 near-ends.The other end of wire 11 and safety line 12 is penetrated from the hole of O shape circle 4 respectively, through conduit 3, from conduit 3 near-ends, stretch out.Be nested with ring electrode 6 and termination electrode 5, while making mapping section 4 for straight tube-like, spacing between two ring electrodes 6 is 1.0-10mm, with size and the equirotal wild card instrument of ring electrode 6 external diameter, ring electrode 6 clampings are fixed in mapping section 4, termination electrode 5 is assembled to the far-end of mapping section 4, with medical grade glue, is adhesively fixed in mapping section 4.Wire 11 and safety line 12 are managed to 2 through sign, respectively wire 11 and safety line 12 are welded in the contact pin of union joint 1, welding gun welding temperature is 450 ℃, safety line is connected to the near-end that is bolted to conduit 3, screw union joint 1, complete the making of outflow tract of right ventricle mapping catheter.
Three, make outflow tract of right ventricle angiography catheter, adopt the polyurethane tube of U.S. Access Point Technologies US company, internal diameter is 0.5-0.8mm, the best is 0.6mm, external diameter is for being 0.8-1mm, the best is 0.9mm, long is 850-1200mm, the best is 1200mm, at one section of the end of pipe 100-400mm, the best is that 100mm-120mm is crooked, thermoforming machine with Shenzhen Huitai Medical Instrument Co., Ltd, from room temperature, through 600 second time, be heated to 200 ℃ of forming temperatures, be 200 seconds heat time heating time, naturally cool to room temperature, sweep and angiography catheter body 8 are 90-180 ° of angle, the other end end of pipe connects the female Luer of 100: 1, by prior art glue fusion method for joining, connect.
Four, make sheath pipe, order is that 2.0-2.5mm, internal diameter are the PEBAX pipe that 1.8-2.7mm, length are 850-1200mm by external diameter, material is that polythene PE, internal diameter are that to be 1.7-2.7mm escort pipe 11 for 1.5-2.5mm, external diameter, female Luer 9, connects by prior art glue fusion method for joining.
When doctor performs the operation, a hands is held union joint 1, another handgrip mapping section 4 penetrates escorts pipe, after mapping section 4 all enters and escorts in pipe, escorting, manage in insertion sheath pipe, by sheath pipe, annular mapping catheter is delivered to reservation position, right ventricle, mapping section 4 is released to sheath pipe, observe after mapping section 4 discharges and be O shape round state under X-ray, doctor holds the myocardial sites close contact that union joint makes mapping Duan Yuxu mapping.As ring electrode can not touch the position that needs mapping, holding union joint rotates to an angle, and control lead rotates the relative sleeve pipe of mapping section 4, make the electrode retaining collar and the myocardium position close contact for the treatment of mapping of mapping section 4, stablize fixedly mapping section 4, then gather patient's intracardiac electrical activity signal.In order to determine accurately mark point position, carry out before mapping, first by outflow tract of right ventricle angiography catheter, local radiography is carried out in intracardiac position, carry out before local radiography, need send angiography catheter by blood vessel in body into the position that needs mapping, angiography catheter arrives behind precalculated position, start injection contrast agent, carries out intracardiac radiography.Until accurately judging behind mapping position, outflow tract of right ventricle mapping catheter is connected to and is led instrument more and can complete mapping by general connecting line.
Embodiment 1, and isolated test adopts one of fresh beef, size 200 * 200 * 100mm, one of outflow tract of right ventricle mapping catheter of the present invention, termination electrode diameter is 2mm, length is 2mm, 9 ring electrode external diameters are 2.0mm, and length is 1mm, lead the polygraph that instrument is prior art more.Test minute two processes, first process is 9 electrodes mappings one by one.Outflow tract of right ventricle mapping catheter, after sheath pipe inserts, is handled union joint, makes the mapping section release of annular mapping catheter be O shape circle, makes ring electrode and beef close contact in O shape circle mapping section.In process of the test, each electrode one by one mapping is normal, and normal value is between 60～100bpm, all in scope.Second process is bipolar mapping, i.e. bipolar mapping between termination electrode and first ring electrode, second ring electrode and the 3rd ring electrode, the 4th ring electrode and the 5th ring electrode, the 6th ring electrode and the 7th ring electrode, the 8th ring electrode and the 9th ring electrode.Outflow tract of right ventricle mapping catheter, after sheath pipe inserts, is handled union joint, makes the mapping section release of annular mapping catheter be O shape circle, makes ring electrode and beef close contact in O shape circle mapping section.In process of the test, mapping is normal one by one for every two electrodes, and normal value is between 60～100bpm, all in scope.
Embodiment 2: zoopery, Canis familiaris L. live body, healthy public Canis familiaris L., 20 kilograms of body weight, 2 years old age.One of outflow tract of right ventricle mapping catheter of the present invention, the diameter of the O shape circle of mapping section is 18mm, and the length of termination electrode is 2mm, and external diameter is 1.2mm, and 9 ring electrode length are 1mm, external diameter is 1.2mm.Outflow tract of right ventricle mapping catheter is entered to outflow tract of right ventricle through sheath pipe, under Siemens DSAX ray monitors, first push union joint, outflow tract of right ventricle mapping catheter is occured bending and deformation, far-end arrives pulmonary orifice, push forward again outflow tract of right ventricle mapping catheter, mapping section is released to sheath pipe, and mapping section discharges and is O shape ring-type, promotes union joint, O shape circle section is rotated, arrive pulmonary orifice.Hold union joint, controlling outflow tract of right ventricle mapping catheter integral body advances to far-end, make ring electrode on the O shape circle of the O shape circle section pulmonary orifice that closely reclines, outflow tract of right ventricle angiography catheter, carries out before local radiography, need be angiography catheter by blood vessel in body, arrival needs the position of mapping, band angiography catheter arrives behind precalculated position, and start injection contrast agent, carries out intracardiac radiography.Carry out the annular mapping of outflow tract of right ventricle.The value of each utmost point 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 mapping of outflow tract of right ventricle mapping catheter of the present invention meets the demands.
The experiment of embodiment 1 and embodiment 2 all completes with interior in half an hour, adopt outflow tract of right ventricle mapping catheter of the present invention in right ventricle or valve of pulmonary trunk table is surveyed, can greatly shorten operating time, reliably carry out in right ventricle or the mapping of valve of pulmonary trunk, to judge the target position time while reducing ablation, accurately provide ablation energy, improve the safety of operation, and easy to operate.
Claims (1)
1. a preparation method for outflow tract of right ventricle mapping and angiography catheter, described outflow tract of right ventricle mapping catheter preparation comprises the following steps:
One, make part, conduit (3) adopts the U.S. Access Point Technologies US stretchy nylon material PEBAX of company pipe, and external diameter is 2.0-2.4mm, and internal diameter is 1.5-2.0mm, and long is 850-1200mm, make mapping section (4), by external diameter, be 1.4-2.4mm, internal diameter is 1.0-2.0mm, draw along groove (18) at the upper remainder being wound around after a circle of annular groove (17) of mould one end of the long U.S. stretchy nylon material PEBAX of the Access Point Technologies US company pipe for 100-150mm, from room temperature, through 600 second time, be warming up to 400 ℃ of molding heating-up temperatures, be 30 minutes heat time heating time, naturally cool to room temperature, make the mapping section (4) that is O shape circle while freely discharging, O shape circle external diameter is 10-24mm, the plane that O shape circle forms and the axis of conduit (3) are 90-180 ° of angle, in the boring of the end of O shape circle, drilled in middle 1-10 hole, manufacturing terminal electrode (5) and ring electrode (6), adopt medical stainless steel or platinumiridio material, process annular termination electrode (5) and ring electrode (6), termination electrode (5) external diameter is 1.4-2.4mm, internal diameter is 1.0-2.0mm, and length is 1-4mm, and ring electrode (6) external diameter is 1.4-2.4mm, internal diameter is 1.0-2.0mm, and length is 1.0-10mm, sign pipe (2) adopts the stretchy nylon material FEP heat-shrinkable tube of ChangYuan Group Ltd., external diameter is 0.5-0.8mm, internal diameter is 0.3-0.6mm, when ducts (3) step, utilize thermal contraction machine to be warming up to 400 ℃ at 5-10 minutes and shrink 3-5 minutes, after natural cooling, external diameter is 0.2-0.3mm, and long is 50-100mm, the mould of manufacturing mapping section (4) is cylindrical, on the outer wall of cylindrical middle part, edge circumferentially has annular groove (17), on the outer wall of annular groove (17) one sides, have the groove (18) that is parallel to cylinder axis, the joint of annular groove (17) and groove (18) is arc-shaped transition (19),
Two, wire (11) employing 1-10 root timber material is copper cash, is of a size of 0.01mm, and copper cash skin is the polyurethane coating of 0.005mm, and wire (11) one end is welded to respectively in ring electrode (6) with electric resistance welding, and welding temperature is 450 ℃; By the material of ADVANCED WIRE AND CABLE company, it is stainless steel silk, be of a size of 0.4mm, the outside of stainless steel silk is that the safety line (12) of the nylon coating of 0.05mm and one end of a wire (11) adopt electric resistance welding, and welding temperature is 450 ℃, is welded in termination electrode (5); Conduit (3) far-end and the thermal contraction machine welding of mapping section (4) near-end, from room temperature through 5-10 minutes to temperature 350-400 ℃, the time of welding is 54-80 second, is naturally cooled to room temperature; To identify pipe (2) is nested with at conduit (3) near-end, utilize thermal contraction machine to be warming up to 350-400 ℃ at 5-10 minutes and shrink 3-5 minutes, after natural cooling, external diameter is 0.2-0.3mm, and long is 50-100mm, makes sign pipe (2) be fixed to conduit (3) near-end; The other end of wire (11) and safety line (12) is penetrated from the hole of O shape circle respectively, through conduit (3), from conduit (3) near-end, stretch out; Be nested with ring electrode (6) and termination electrode (5), while making mapping section (4) for straight tube-like, spacing between two ring electrodes (6) is 1.0-10mm, with size and the equirotal wild card instrument of ring electrode (6) external diameter, ring electrode (6) clamping is fixed in mapping section (4), termination electrode (5) is assembled to the far-end of mapping section (4), with medical grade glue, is adhesively fixed in mapping section (4); Wire (11) and safety line (12) are managed to (2) through sign, respectively wire (11) and safety line (12) are welded in the contact pin of union joint (1), welding gun welding temperature is 450 ℃, safety line is connected to the near-end that is bolted to conduit (3), screw union joint (1), complete the making of outflow tract of right ventricle mapping catheter;
Flow out angiography catheter preparation and comprise the following steps described right ventricle: make outflow tract of right ventricle angiography catheter, adopt polyurethane tube, internal diameter is 0.5-0.8mm, external diameter is 0.8-1mm, long is 850-1200mm, one section of end 100-400mm bending at pipe, from room temperature, through 600 second time, be heated to 200 ℃ of forming temperatures, be 200 seconds heat time heating time, naturally cool to room temperature, sweep and angiography catheter body (8) are 90-180 ° of angle, and the other end end of pipe connects the female Luer of 100:1, by glue fusion method for joining, connects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210016616.9A CN102579031B (en) | 2012-01-19 | 2012-01-19 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
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| CN201210016616.9A CN102579031B (en) | 2012-01-19 | 2012-01-19 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
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| Publication Number | Publication Date |
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| CN102579031A CN102579031A (en) | 2012-07-18 |
| CN102579031B true CN102579031B (en) | 2014-10-01 |
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| US9278187B2 (en) * | 2013-03-13 | 2016-03-08 | Biosense Webster (Israel) Ltd. | Method for making a low OHMIC pressure-contact electrical connection between split ring electrode and lead wire |
| 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 |
| EP3518741B1 (en) * | 2016-09-27 | 2020-09-16 | Cardiac Pacemakers, Inc. | Mapping and/or ablation catheter with a closed distal loop |
| CN113331935A (en) * | 2021-06-01 | 2021-09-03 | 黄松群 | Novel atrial fibrillation cryoablation device beneficial to pulmonary vein plugging |
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