CN102274018A - Fast-switching and mapping catheter, and preparation method and application method thereof - Google Patents
Fast-switching and mapping catheter, and preparation method and application method thereof Download PDFInfo
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- CN102274018A CN102274018A CN2011101336707A CN201110133670A CN102274018A CN 102274018 A CN102274018 A CN 102274018A CN 2011101336707 A CN2011101336707 A CN 2011101336707A CN 201110133670 A CN201110133670 A CN 201110133670A CN 102274018 A CN102274018 A CN 102274018A
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Abstract
The invention discloses a fast-switching and mapping catheter, and a preparation method and an application method thereof in order to realize the fast mapping of electrocardiosignals in a coronary artery. The fast-switching and mapping catheter is characterized in that an inner catheter and an outer catheter are welded and connected at the end part on the far end, the lateral side on the near end of the outer catheter is provided with a thread hole, the thread hole and the port on the near end of the inner catheter are welded and connected, and the end part on the far end of the outer catheter is provided with a ring electrode. The preparation method comprises the following steps: preparing the outer catheter, preparing the inner catheter, welding the two ends of the inner catheter and the outer catheter, assembling wires on the ring electrode, welding a stainless steel tube and the outer catheter, and assembling joints. Compared with the prior art, the invention utilizes the thread having a small diameter to transfer the catheter into the far-end mapping position, thereby greatly shortening the operation time; and electrophysiological mapping can be carried out on descending anterior branches and circumflex branches of the epicardial coronary artery and the inside of the right coronary artery, thereby providing help for the radio-frequency ablation operation on patients of which the ventricular tachycardia is focused on the epicardial myocardium, and providing a more precise basis for accurate positioning during the operation.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments and preparation method thereof and using method, particularly a kind of conduit that coronary artery is carried out mapping diagnosis usefulness and preparation method thereof and using method.
Background technology
At present, IVT (chamber speed) adopts radiofrequency ablation therapy that very high success rate is arranged, and still, the radiofrequency ablation therapy success rate of other organic heart disease chamber speed such as coronary heart disease is also limited.Be positioned at patient myocardium under the visceral pericardium for the chamber speed focus that runs into clinically, usually powerless based on the radio-frequency (RF) ablation method of endocardial mapping.Because coronary artery and branch thereof are " setting netted " and are clouded in the locular wall cardiac muscle, normal person's coronary artery and branch's internal diameter only are 3～4mm, complex structure, conventional coronary artery intervene operation difficulty is bigger, and used exchange guidewire length is 2.3 to 4.0 meters, has greatly hindered entering of coronary artery intervention diagnosis and intervention apparatus, therefore, coronary artery is carried out the mapping diagnosis, therapeutic room's speed focus is positioned at patient myocardium under the visceral pericardium, have significant.In the prior art, also there is not a kind of intervention apparatus can be reliably exactly be positioned at epicardial anterior descending branch coronarius, circle round, right coronary artery inside etc. to be carried out electric physiology mapping.
Summary of the invention
The purpose of this invention is to provide a kind of quick exchange mapping conduit and preparation method thereof and using method, the technical problem that solve is fast electrocardiosignal in the coronary artery to be carried out mapping.
The present invention is by the following technical solutions: a kind of quick exchange mapping conduit, the far-end of described quick exchange mapping conduit is provided with piped outer tube, piped interior pipe is set in the outer tube, interior pipe is welded to connect at distal end with outer tube, the proximal outer tube side has a thread eye, thread eye and interior pipe proximal port are welded to connect, be connected with stainless steel tube between the proximal end of outer tube and the union joint, ring electrode is equipped with in the distal outer tube end, one end of the inwall welding lead of ring electrode, the lead other end is connected to union joint in outer tube bore, stainless steel tube.
Far-end one side of thread eye of the present invention and interior pipe proximal port one face down bonding connect in succession, be welded to connect with near-end one rear flank that arc transition is bent to thread eye to the thread eye direction at near-end one side of thread eye, the tube wall relative with interior pipe proximal port one side, again by far-end one side to near-end one side, thread eye and interior pipe proximal port arc transition smoothly are welded to connect.
Pipe is positioned at inwall one side that the thread eye direction is close in outer tube inside in of the present invention.
The external diameter of outer tube of the present invention is 0.9mm to 1.2mm, and internal diameter is 0.7mm to 1.0mm, long 350mm to 360mm; External diameter of pipe is 0.40mm to 0.42mm in described, and internal diameter is 0.37 to 0.40mm, long 230mm to 235mm; Described thread eye is 5mm to 6mm along the length of the axial direction of interior pipe, and width is 0.42mm to 0.44mm; Described stainless steel tube external diameter is 0.68mm to 0.72mm, and internal diameter is 0.66mm to 0.70mm, long 1110mm to 1120mm; Described wire diameter is 0.086mm to 0.091mm; The external diameter of described ring electrode is 0.9mm to 1.2mm, and width is 0.9mm to 1.2mm, wall thickness 0.03mm to 0.1mm.
Ring electrode of the present invention is four to ten pairs.
Ring electrode of the present invention is 38mm to 40mm apart from the distal outer tube end; Spacing is 10mm between two counter electrode, and spacing is 1mm between every counter electrode.
Outer tube of the present invention and interior pipe adopt block copolymer, and ring electrode is processed by platinum, gold, platinum.
The distal outer of pipe and distal outer tube inwall welding in of the present invention, it is conical that outer tube welding section outside is, and the axial length of welding section is 4mm to 10mm; The near-end junction of described union joint and stainless steel tube is coated with polyolefin stress release pipe; The far-end of described stainless steel tube puts in the proximal end of outer tube and is welded to connect, and it is conical that the welding portion external shape of outer tube is, and conical axial length along outer tube is 10mm to 20mm.
A kind of preparation method of quick exchange mapping conduit, may further comprise the steps: one, preparation outer tube, with the block copolymer raw material, being extruded into external diameter is 0.9mm to 1.2mm, internal diameter is 0.7mm to 1.0mm, length is the outer tube of 350mm to 360mm, with external diameter is that the rustless steel syringe needle of 1mm pierces a thread eye and eight to 20 electrode cable holes outside tube wall, thread eye is apart from the 230mm to 235mm of distal end place, the electrode cable pitch-row begins from distal outer tube end 38mm to 40mm, distributes by spacing 1mm-10mm-1mm rule; Two, pipe in the preparation, the block copolymer raw material, being extruded into external diameter is 0.40mm to 0.42mm, internal diameter is 0.37 to 0.40mm, length is the interior pipe of 230mm to 235mm, it is 0.34mm to 0.36mm that interior pipe box is gone into diameter, and length is on the stainless steel bar of 250mm to 260mm, and interior pipe is inserted the distal end of outer tube one end to outer tube from the position of thread eye; Three, welding inner and outer pipes two ends 335 ℃ of heat shrink, are heated 20s with the inner and outer pipes far-end, and welding between the far-end inner and outer pipes 335 ℃ of one weeks of heat shrink thread eye, is heated 10s, welding between near-end thread eye place and the interior pipe with the inner and outer pipes near-end; Four, electrode retaining collar and lead assembling, with copper cash lead one end, weld with platinumiridio electrode retaining collar inwall, the lead other end is penetrated in the outer tube outside the wire guide of outer tube, send to until electrode retaining collar arrival distal outer tube to proximal outer tube, electrode retaining collar is inserted in position to corresponding wire guide, again lead is extracted out from proximal outer tube, the stainless steel bar of interior tube cavity is extracted out from thread eye is manual; Five, stainless steel tube and outer sealing of tube, adopt stainless steel tube, external diameter is 0.68mm to 0.72mm, and internal diameter is 0.66mm to 0.70mm, length is 1110mm to 1120mm, the lead extracted out the far-end from stainless steel tube is penetrated to near-end, proximal outer tube is enclosed within on the stainless steel tube, 335 ℃ of temperature, time 120s, shrink, it is conical that contraction front is, the long 10mm to 20mm of axis; Six, joint assembling will
Type stress release pipe, be nested with at the stainless steel tube near-end, internal diameter is 1.47mm to 1.53mm before shrinking, and external diameter is 1.67mm to 1.73mm, at 240 ℃, time 20s shrinks, and having shunk internal diameter is 0.70mm to 0.75mm, external diameter is 1.20mm to 1.25mm, lead proximal end is welded on the Connection Block, and welding temperature is set to 400 ℃ to 480 ℃, the quick exchange that completes mapping conduit.
A kind of using method of quick exchange mapping conduit, may further comprise the steps: one-sided femoral artery one, punctures, coronary artery is carried out radiography, sending into diameter is 0.36mm, the conventional seal wire of long 2.3m to 4.0m and guiding catheter are to the coronary artery crotch, take out conventional seal wire, the replacing diameter is 0.36mm, long seal wire for 1.8m to 2.0m along in the guiding catheter to arteria coronaria inside; Two, the seal wire near-end is penetrated quick exchange mapping distal end of catheter, stretch out from thread eye, quick exchange mapping conduit is fed through wire distal in along the seal wire near-end from guiding catheter, and quick exchange mapping conduit ring electrode far away delivers to anterior descending branch coronarius respectively, circle round, right coronary artery inside; Three, quick exchange mapping conduit is connected to polygraph by cable, the ring electrode of distal end of catheter transmits out with the electrocardiosignal in the arteria coronaria, exciting distribution, route of transmission signal, and the doctor determines lesions position by detecting electrocardiogram; Four, ablation catheter is delivered to heart inner chamber affected area and carried out radiofrequency ablation therapy; Five, the ring electrode of distal end of catheter transmits out with the electrocardiosignal in the arteria coronaria, exciting distribution, route of transmission signal, and the doctor observes mapping position electrocardiogram in the arteria coronaria, and is normal, withdraws from guiding catheter, seal wire, quick exchange mapping conduit and ablation catheter.
The present invention compared with prior art, the far-end of quick exchange mapping conduit is provided with outer tube, interior pipe is set in the outer tube, the proximal outer tube side has a thread eye, thread eye and interior pipe proximal port are welded to connect, ring electrode is equipped with in the distal outer tube end, utilize the short seal wire of diameter that conduit is sent into far-end mapping position, shorten the time of operation greatly, to being positioned at epicardial anterior descending branch coronarius, circle round and prop up, electric physiology mapping is carried out in right coronary artery inside, can carry out the radio-frequency (RF) ablation operation to the patient that the fast focus in chamber is positioned at cardiac muscle under the visceral pericardium and offer help, provide more definite foundation the accurate location of performing the operation.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the distribution schematic diagram of the ring electrode of the embodiment of the invention.
Fig. 3 is the interior pipe of the embodiment of the invention and the structural representation of distal outer tube end.
Fig. 4 is the structural representation of the interior pipe of the embodiment of the invention at the outer tube interior location.
Fig. 5 is the thread eye structural representation of the embodiment of the invention.
Fig. 6 is the inner tube structure sketch map of the embodiment of the invention.
Fig. 7 is the stainless steel tube of the embodiment of the invention and the structural representation of union joint.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
As shown in Figure 1, quick exchange mapping conduit of the present invention is provided with piped outer tube 1 at its far-end, and piped interior pipe 2 is set in the outer tube 1, and interior pipe 2 is welded to connect at distal end 5 with outer tube 1.Outer tube 1 has a thread eye 6 in proximal side, as shown in Figure 5, thread eye 6 is welded to connect with interior pipe 2 proximal port, far-end one side 61 of thread eye 6 connects in succession with interior pipe 2 proximal port one face down bonding, near-end one side 62 at thread eye 6, the tube wall relative with interior pipe 2 proximal port one side is welded to connect be bent to near-end one side 62 of thread eye 6 with arc transition 63 to thread eye 6 directions after, again by far-end one side 61 to near-end one side 62, thread eye 6 smoothly is welded to connect with interior pipe 2 proximal port arc transition.Be connected with stainless steel tube 3 between the proximal end 7 of outer tube 1 and the union joint 4.
The external diameter of outer tube 1 is 0.9mm to 1.2mm, and internal diameter is 0.7mm to 1.0mm, and long 350mm to 360mm can easily enter coronary artery.
In pipe 2 external diameters be 0.40mm to 0.42mm, internal diameter is 0.37 to 0.40mm, long 230mm to 235mm.
The block copolymer PEBAX that outer tube 1 and the French A Kema Arkema of interior pipe 2 employings company produce.
As shown in Figure 2, outer tube 1 is made of outer tube wall 8, the ring electrode 9 that is arranged on outer tube wall 8 outer walls, is outer tube bore 10 between outer tube 1 inwall and the interior pipe 2.
Outer tube wall 8 distal ends are equipped with four to ten pairs of ring electrodes 9, play the mapping effect, can position and diagnose coronary artery inside lesions position.Ring electrode 9 is processed by platinum, gold, platinum, and this metalloid energising property is good, and has excellent biological compatibility.The external diameter of ring electrode 9 is 0.9mm to 1.2mm, and width is 0.9mm to 1.2mm, wall thickness 0.03mm to 0.1mm.Distal-most end ring electrode 9 is 38mm to 40mm apart from outer tube 1 distal end.Spacing is 10mm between two counter electrode, and spacing is 1mm between every counter electrode, both on the outer tube wall 8 between the ring electrode 9 by the arrangement that distributes alternately of the spacing of 1mm-10mm-1mm.One end of the inwall welding lead of ring electrode 9, the lead other end is connected to union joint 4 in outer tube bore 10, stainless steel tube 3.Wire diameter is 0.086mm to 0.091mm.
As shown in Figure 3, at the distal end of quick exchange mapping conduit, interior pipe 2 is welded to connect in outer tube 1, the distal outer of interior pipe 2 and the welding of outer tube 1 far-end inwall, and it is conical that outer tube 1 welding section 11 outsides are, and the axial length of welding section 11 is 4mm to 10mm.
As shown in Figure 4, interior pipe 2 is positioned at the side that outer tube 1 inwall is close in outer tube 1 inside, and is positioned at inwall one side of thread eye 6 directions.
As shown in Figure 6, outer wall 15 inside of interior pipe 2 are inner chamber 13, and seal wire 14 imports from the thread eye 6 of interior pipe near-end, the far-end along the inner chamber 13 of interior pipe 2 to interior pipe 2.
The conduit of prior art, seal wire penetrates far-end along conduit to conduit from the near-end union joint of conduit.Pipe 2 in seal wire 14 of the present invention imports from thread eye 6, inner chamber 13 at interior pipe 2 moves the distal end of very short distance with regard to pipe 2 in arriving, therefore conduit can be selected short seal wire, can reduce operating time, improve operation efficient, therefore, be also referred to as quick exchange (RX, rapid exchange) mapping conduit.
Seal wire 14 adopts 304 rustless steels, and length is 280mm to 285mm.
As shown in Figure 7, union joint 4 is connected with stress release pipe 19 with the near-end junction of stainless steel tube 15, stress release pipe 19 is nested with the near-end at stainless steel tube 15, and connects union joint 4, and stress release pipe 19 is coated on stainless steel tube 3 and union joint 4 junctions, can reduce the stress concentration of union joint 4 and stainless steel tube 15 junctions, and play the sign effect, and stress release pipe 19 adopts polyolefin, and length is 35mm to 40mm, internal diameter is 0.70mm to 0.75mm, and external diameter is 1.20mm to 1.25mm.Union joint 4 is the standard union joint, all can be welded on the contact pin in the union joint 4 with the lead of ring electrode 9 welding, by the union joint 4 outside prolongation cables that connect, can be connected to and lead instrument more.The far-end of stainless steel tube 3 puts in the proximal end 7 of outer tube 1 and is welded to connect, and it is conical that welding portion 16 external shape of outer tube 1 are, and conical axial length along outer tube 1 is 10mm to 20mm.On the length direction of stainless steel tube 3, be printed on degree of depth indicating graduation 17, may be displayed on that conduit enters the intravital length of people in the operation process.The long 5mm of first deep calibration of far-end is apart from outer tube 1 distal end 765mm to 775mm.Second long 10mm of deep calibration of far-end is apart from outer tube 1 distal end 860mm to 865mm.
The preparation method of quick exchange mapping conduit of the present invention may further comprise the steps:
One, preparation outer tube:
1, with the holy 35 type extruder of pacifying the plastics machinery company limited of Dongguan City, the PEBAX raw material that French A Kema Arkema company is produced, being extruded into external diameter is 0.9mm to 1.2mm, internal diameter is 0.7mm to 1.0mm, length is the outer tube of 350mm to 360mm, screw speed 30r/min is set, barrel pressure 2000Mpa, hauling speed 30m/s.
2, with external diameter be a rustless steel syringe needle manual thread eye and eight to 20 electrode cable holes of piercing outside tube wall of 1mm, thread eye is located at the distance distal end 230mm to 235mm of place, the electrode cable hole is at the opposite side of thread eye, each hole is arranged on same the straight line, the electrode cable hole distributes by spacing 1mm-10mm-1mm rule from distance outer tube 1 distal end 38mm to 40mm.
Two, pipe in the preparation
1, with the holy 35 type extruder of pacifying the plastics machinery company limited of Dongguan City, the PEBAX raw material that French A Kema Arkema company is produced, being extruded into external diameter is 0.40mm to 0.42mm, internal diameter is 0.37 to 0.40mm, length is the interior pipe of 230mm to 235mm, screw speed 30r/min is set, barrel pressure 2000Mpa, hauling speed 30m/s.
2, diameter being inserted in interior effective craft is 0.34mm to 0.36mm, length is 250mm to 260mm, on the 316L stainless steel bar that Shanghai joint metal material limited company produces, then interior pipe is inserted the distal end of outer tube one end to outer tube by hand from the position of thread eye.
Three, welding inner and outer pipes two ends
1, will doubly think the special electronic tool 850+ of factory type hot-air blower and open, be heated to 335 ℃, with the inner and outer pipes far-end heat shrink under hot-air blower that assembles, heating 20s, welding is firm between the far-end inner and outer pipes.Outer tube welding section external heat is shunk and is formed taper shape, and conical axial length is 4mm to 10mm.
2, will doubly think the special electronic tool 850+ of factory type hot-air blower and open, be heated to 335 ℃, with inner and outer pipes near-end one week of heat shrink thread eye under hot-air blower that assembles, heating 10s, welding is firm between near-end thread eye place and the interior pipe.
Four, electrode retaining collar and lead assembling
1, with copper cash lead one end of the U.S. MWS Wire Industries 39# of company (RED) HPN-155, platinumiridio electrode retaining collar inwall welding with the sharp metal material company limited of Kunming platinum, the ring electrode external diameter is 0.9mm to 1.2mm, width is 0.9mm to 1.2mm, wall thickness is 0.03mm to 0.1mm, adopt the SLD-936 type welding gun of Shenzhen Xin Lida Electron Group Co., Ltd, welding temperature is set to 400 ℃ to 480 ℃.
2, the lead other end is penetrated in the outer tube outside the wire guide of outer tube, send to until electrode retaining collar to proximal outer tube and arrive distal outer tube, by hand electrode retaining collar is inserted in position, again lead is extracted out from proximal outer tube to corresponding wire guide.
3, assembled ring electrode after, the stainless steel bar of interior tube cavity is extracted out from thread eye is manual.
Five, stainless steel tube and outer sealing of tube
1, prepare a stainless steel tube, the 316L stainless steel tube that adopts Shanghai joint metal material limited company to produce, external diameter is 0.68mm to 0.72mm, internal diameter is 0.66mm to 0.70mm, length is 1110mm to 1120mm, the HP-JGC50 type semiconductor side laser marking machine of and Mk system company limited luxuriant with Wuhan, indicate scale at the stainless steel tube outer wall apart from distal end 765mm to 775mm place, the long 5mm of first scale, apart from outer tube distal-most end 860mm to 865mm, second long 10mm of scale, it is electric current 10A that mark machine parameter is set, marking speed is 100mm/s, marking continuously.
2, the lead extracted out the far-end from stainless steel tube is penetrated to near-end.
3, proximal outer tube is enclosed within on the stainless steel tube, shrinks under the 850+ type hot-air blower of Bei Site electronic tool factory, it is conical that contraction front is, and the long 10mm to 20mm of axis is provided with 335 ℃ of temperature, time 120s.
Six, joint assembling
1, with Shenzhen Changyuan Electron Material Co., Ltd
Type stress release pipe, be nested with at the stainless steel tube near-end, internal diameter is 1.47mm to 1.53mm before shrinking, external diameter is 1.67mm to 1.73mm, under the 850+ type hot-air blower of Bei Site electronic tool factory, shrink, 240 ℃ of temperature are set, time 20s, having shunk internal diameter is 0.70mm to 0.75mm, and external diameter is 1.20mm to 1.25mm.
2, with lead proximal end with the SLD-936 of Xin Lida Electron Group Co., Ltd of Shenzhen type welding gun, be welded on thunder not on the PAG.M0.4GL.AC52A type Connection Block of (Shanghai) trade Co., Ltd, welding temperature is set to 400 ℃ to 480 ℃.Whole quick exchange mapping conduit completes.
The using method of quick exchange mapping conduit of the present invention may further comprise the steps:
One, the one-sided femoral artery that punctures according to a conventional method, coronary artery is carried out radiography, sending into diameter is 0.36mm, the conventional seal wire of long 2.3m to 4.0m and guiding catheter are to coronary artery (being called for short " arteria coronaria ") crotch, the crotch arteria coronaria be divided into arteria coronaria anterior descending branch, circle round and right hat, take out conventional seal wire, the replacing diameter is 0.36mm, long seal wire for 1.8m to 2.0m along in the guiding catheter to arteria coronaria inside.
Two, observe the mapping target position by radiography, the seal wire near-end is penetrated quick exchange mapping distal end of catheter of the present invention, stretch out from thread eye, quick exchange mapping conduit is fed through wire distal in along the seal wire near-end from guiding catheter, guide by guiding catheter, with the electrode tip tube portion that quick exchange mapping distal end of catheter is equipped with ring electrode deliver to anterior descending branch coronarius respectively, circle round, right coronary artery inside, the used seal wire of this process only needs 1.8m to 2.0m, shorten the time of exchange guidewire in the operation, improved treatment speed.
Three, quick exchange mapping conduit is connected to polygraph by cable, the ring electrode of distal end of catheter can be expressed the electrocardiosignal in the arteria coronaria, exciting distribution, route of transmission signal transmission, clear and definite display room speed lesions position, the patient that speed focus in chamber is positioned at cardiac muscle visceral pericardium under carries out radio-frequency (RF) ablation and performs the operation and offer help, the doctor just can determine lesions position by detecting electrocardiogram.
Four, seal wire, guiding catheter and quick exchange mapping conduit continue to place in the arteria coronaria, capable again femoral venous puncture, with diameter is 0.36mm, after the conventional seal wire of long 2.3m to 4.0m and guiding catheter are delivered to right ventricle's intracavity, withdraw from conventional seal wire, send ablation catheter to heart inner chamber affected area to carry out radiofrequency ablation therapy along guiding catheter again.
Five, melt after, the ring electrode of quick exchange mapping distal end of catheter is expressed indoor electrocardiosignal, exciting distribution, route of transmission signal transmission, the doctor observes mapping position electrocardiogram in the arteria coronaria, if normal, withdraws from guiding catheter, seal wire, quick exchange mapping conduit and ablation catheter.
The present invention carries out coronary artery with ring electrode and gets involved the mapping diagnosis, with diameter is 0.36mm, length only can penetrate to anterior descending branch coronarius from thread eye for the seal wire of 1.8m to 2.0m, circle round and prop up, mapping is carried out to chamber speed focus in right coronary artery inside, the short and diameter of used seal wire only is required to be 0.36mm and gets final product in the intervene operation process, but thread eye and interior tube cavity quick exchange seal wire, make quick exchange mapping conduit and other adnexaes have sharp separation, the characteristics that seal wire slippage rate is low, can obviously shorten in the operation process seal wire apparatus swap time, improve treatment speed.
The present invention can utilize diameter to be 0.36mm, long only for the seal wire of 1.8m to 2.0m conduit is sent into far-end mapping position, can shorten time of operation, raising speed greatly by the quick exchange seal wire.Therefore, be positioned at epicardial anterior descending branch coronarius, circle round, right coronary artery inside etc. carried out electric physiology mapping, can carry out radio-frequency (RF) ablation to the patient that chamber speed focus is positioned at cardiac muscle visceral pericardium under and perform the operation and offer help.Getting involved mapping in the coronary artery can express excitement distribution, the route of transmission of myocardium lesions position under the visceral pericardium of being studied, can delineate out each exciting sequencing and exciting compliance, the activity and the state variation of cardiac muscle, provide how accurate information than endocardial mapping electrocardio mode, provide more definite foundation the accurate location of performing the operation.
Embodiment, quick exchange mapping conduit is of a size of: outer external diameter of pipe is 1.1mm, internal diameter 0.9mm, long 350mm is equipped with 8 ring electrodes, ring electrode external diameter 1.0mm apart from distal end 38mm place according to the spacing of 1mm-10mm-1mm, width is 1.0mm, wall thickness 0.05mm.Interior external diameter of pipe 0.4mm, internal diameter 0.37mm, long 230mm.Rustless steel pipe range 1110mm, external diameter are 0.68mm, internal diameter 0.68mm.The 235mm place has thread eye in distance distal outer tube end, and seal wire can be fed through the far-end of outer tube from thread eye.
To body weight is that 25.5 kilograms Canis familiaris L. carries out mapping in the coronary artery, punctures through femoral artery, confirms under the supervision of X ray, to send into conventional seal wire and guiding catheter in the coronary artery position under angiography.Reverse guiding catheter and enter coronary ostium, radiography is observed the guiding catheter position, after confirming correct position, take out conventional seal wire, in coronary artery, insert the seal wire that diameter is 0.36mm through guiding catheter, is 0.36mm with the far-end of quick exchange mapping conduit from diameter, length penetrates for the seal wire near-end of 1.8m to 2.0m, the side thread eye of seal wire near-end from the mapping conduit passed, under the guide effect of guiding catheter, quick exchange mapping conduit is sent in the arteria coronaria, quick exchange mapping catheter proximal end union joint is connected to leads on the instrument more, read the electrocardiogram at mapping position in the arteria coronaria, determine indoor lesions position, send into conventional seal wire and guiding catheter, withdraw from seal wire tailing edge guiding catheter and send into ablation catheter, carry out radio-frequency ablation procedure, melt finish after, observe mapping position electrocardiogram in the arteria coronaria, normally, the success of this mapping and ablation procedure is described.
Claims (10)
1. quick exchange mapping conduit, it is characterized in that: the far-end of described quick exchange mapping conduit is provided with piped outer tube (1), piped interior pipe (2) is set in the outer tube (1), interior pipe (2) is welded to connect at distal end (5) with outer tube (1), outer tube (1) proximal side has a thread eye (6), thread eye (6) is welded to connect with interior pipe (2) proximal port, be connected with stainless steel tube (3) between the proximal end (7) of outer tube (1) and the union joint (4), outer tube (1) distal end is equipped with ring electrode (9), one end of the inwall welding lead of ring electrode (9), the lead other end is through outer tube bore (10), be connected to union joint (4) in the stainless steel tube (3).
2. quick exchange mapping conduit according to claim 1, it is characterized in that: far-end one side (61) of described thread eye (6) connects in succession with interior pipe (2) proximal port one face down bonding, be welded to connect be bent to near-end one side (62) of thread eye (6) with arc transition (63) to thread eye (6) direction at near-end one side (62) of thread eye (6), the tube wall relative after with interior pipe (2) proximal port one side, again by far-end one side (61) to near-end one side (62), thread eye (6) and interior pipe (2) proximal port arc transition smoothly are welded to connect.
3. quick exchange mapping conduit according to claim 2 is characterized in that: pipe (2) is positioned at inwall one side that thread eye (6) direction is close in outer tube (1) inside in described.
4. quick exchange mapping conduit according to claim 3 is characterized in that: the external diameter of described outer tube (1) is 0.9mm to 1.2mm, and internal diameter is 0.7mm to 1.0mm, long 350mm to 360mm; Pipe (2) external diameter is 0.40mm to 0.42mm in described, and internal diameter is 0.37 to 0.40mm, long 230mm to 235mm; Described thread eye (6) is 5mm to 6mm along the length of the axial direction of interior pipe (2), and width is 0.42mm to 0.44mm; Described stainless steel tube (3) external diameter is 0.68mm to 0.72mm, and internal diameter is 0.66mm to 0.70mm, long 1110mm to 1120mm; Described wire diameter is 0.086mm to 0.091mm; The external diameter of described ring electrode (9) is 0.9mm to 1.2mm, and width is 0.9mm to 1.2mm, wall thickness 0.03mm to 0.1mm.
5. quick exchange mapping conduit according to claim 4 is characterized in that: described ring electrode (9) is four to ten pairs.
6. quick exchange mapping conduit according to claim 5 is characterized in that: described ring electrode (9) is 38mm to 40mm apart from outer tube (1) distal end; Spacing is 10mm between two counter electrode, and spacing is 1mm between every counter electrode.
7. quick exchange mapping conduit according to claim 6 is characterized in that: described outer tube (1) and interior pipe (2) adopt block copolymer, and ring electrode (9) is processed by platinum, gold, platinum.
8. quick exchange mapping conduit according to claim 7, it is characterized in that: the distal outer of pipe (2) and outer tube (1) far-end inwall welding in described, it is conical that outer tube (1) welding section (11) outside is, and the axial length of welding section (11) is 4mm to 10mm; Described union joint (4) is coated with polyolefin stress release pipe (19) with the near-end junction of stainless steel tube (15); The far-end of described stainless steel tube (3) puts in the proximal end (7) of outer tube (1) and is welded to connect, and it is conical that welding portion (16) external shape of outer tube (1) is, and conical axial length along outer tube (1) is 10mm to 20mm.
9. the preparation method of a quick exchange mapping conduit, may further comprise the steps: one, preparation outer tube, with the block copolymer raw material, being extruded into external diameter is 0.9mm to 1.2mm, internal diameter is 0.7mm to 1.0mm, length is the outer tube of 350mm to 360mm, with external diameter is that the rustless steel syringe needle of 1mm pierces a thread eye and eight to 20 electrode cable holes outside tube wall, thread eye is apart from the 230mm to 235mm of distal end place, the electrode cable pitch-row begins from distal outer tube end 38mm to 40mm, distributes by spacing 1mm-10mm-1mm rule; Two, pipe in the preparation, the block copolymer raw material, being extruded into external diameter is 0.40mm to 0.42mm, internal diameter is 0.37 to 0.40mm, length is the interior pipe of 230mm to 235mm, it is 0.34mm to 0.36mm that interior pipe box is gone into diameter, and length is on the stainless steel bar of 250mm to 260mm, and interior pipe is inserted the distal end of outer tube one end to outer tube from the position of thread eye; Three, welding inner and outer pipes two ends 335 ℃ of heat shrink, are heated 20s with the inner and outer pipes far-end, and welding between the far-end inner and outer pipes 335 ℃ of one weeks of heat shrink thread eye, is heated 10s, welding between near-end thread eye place and the interior pipe with the inner and outer pipes near-end; Four, electrode retaining collar and lead assembling, with copper cash lead one end, weld with platinumiridio electrode retaining collar inwall, the lead other end is penetrated in the outer tube outside the wire guide of outer tube, send to until electrode retaining collar arrival distal outer tube to proximal outer tube, electrode retaining collar is inserted in position to corresponding wire guide, again lead is extracted out from proximal outer tube, the stainless steel bar of interior tube cavity is extracted out from thread eye is manual; Five, stainless steel tube and outer sealing of tube, adopt stainless steel tube, external diameter is 0.68mm to 0.72mm, and internal diameter is 0.66mm to 0.70mm, length is 1110mm to 1120mm, the lead extracted out the far-end from stainless steel tube is penetrated to near-end, proximal outer tube is enclosed within on the stainless steel tube, 335 ℃ of temperature, time 120s, shrink, it is conical that contraction front is, the long 10mm to 20mm of axis; Six, joint assembling will
Type stress release pipe, be nested with at the stainless steel tube near-end, internal diameter is 1.47mm to 1.53mm before shrinking, and external diameter is 1.67mm to 1.73mm, at 240 ℃, time 20s shrinks, and having shunk internal diameter is 0.70mm to 0.75mm, external diameter is 1.20mm to 1.25mm, lead proximal end is welded on the Connection Block, and welding temperature is set to 400 ℃ to 480 ℃, the quick exchange that completes mapping conduit.
10. the using method of a quick exchange mapping conduit, may further comprise the steps: one-sided femoral artery one, punctures, coronary artery is carried out radiography, sending into diameter is 0.36mm, the conventional seal wire of long 2.3m to 4.0m and guiding catheter are to the coronary artery crotch, take out conventional seal wire, the replacing diameter is 0.36mm, long seal wire for 1.8m to 2.0m along in the guiding catheter to arteria coronaria inside; Two, the seal wire near-end is penetrated quick exchange mapping distal end of catheter, stretch out from thread eye, quick exchange mapping conduit is fed through wire distal in along the seal wire near-end from guiding catheter, and quick exchange mapping conduit ring electrode far away delivers to anterior descending branch coronarius respectively, circle round, right coronary artery inside; Three, quick exchange mapping conduit is connected to polygraph by cable, the ring electrode of distal end of catheter transmits out with the electrocardiosignal in the arteria coronaria, exciting distribution, route of transmission signal, and the doctor determines lesions position by detecting electrocardiogram; Four, ablation catheter is delivered to heart inner chamber affected area and carried out radiofrequency ablation therapy; Five, the ring electrode of distal end of catheter transmits out with the electrocardiosignal in the arteria coronaria, exciting distribution, route of transmission signal, and the doctor observes mapping position electrocardiogram in the arteria coronaria, and is normal, withdraws from guiding catheter, seal wire, quick exchange mapping conduit and ablation catheter.
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| CN102551705A (en) * | 2012-01-19 | 2012-07-11 | 赖珩莉 | Auricular tachycardia mapping catheter and preparation method thereof |
| CN102579037A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Coronary vein mapping catheter and preparation method thereof |
| CN102579031A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
| CN104665922A (en) * | 2015-02-26 | 2015-06-03 | 首都医科大学附属北京安贞医院 | Marshall ligament absolute ethyl alcohol ablation system |
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| CN102579037A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Coronary vein mapping catheter and preparation method thereof |
| CN102579031A (en) * | 2012-01-19 | 2012-07-18 | 洪浪 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
| CN102579031B (en) * | 2012-01-19 | 2014-10-01 | 洪浪 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
| CN102579037B (en) * | 2012-01-19 | 2015-02-04 | 洪浪 | Coronary vein mapping catheter and preparation method thereof |
| CN105361943A (en) * | 2014-08-27 | 2016-03-02 | 上海安通医疗科技有限公司 | Catheter device for adjusting nerves |
| CN105361943B (en) * | 2014-08-27 | 2021-04-20 | 上海安通医疗科技有限公司 | Catheter device for regulating nerves |
| CN104665922A (en) * | 2015-02-26 | 2015-06-03 | 首都医科大学附属北京安贞医院 | Marshall ligament absolute ethyl alcohol ablation system |
| CN104665922B (en) * | 2015-02-26 | 2017-01-18 | 首都医科大学附属北京安贞医院 | Marshall ligament absolute ethyl alcohol ablation system |
| 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 |
| CN107823778A (en) * | 2017-12-13 | 2018-03-23 | 山东吉威医疗制品有限公司 | A kind of reworking method of foley's tube guide wire exit openings |
| CN107823778B (en) * | 2017-12-13 | 2020-05-01 | 山东吉威医疗制品有限公司 | Reworking method for balloon catheter guide wire outlet |
| CN109805926A (en) * | 2019-03-19 | 2019-05-28 | 苏州润迈德医疗科技有限公司 | Signal measurement apparatus for Intracoronary ECG |
| CN113040903A (en) * | 2021-03-23 | 2021-06-29 | 哈尔滨医科大学 | Laser ablation system |
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Effective date of registration: 20161128 Address after: 414000 No. 009, Xiangxiang Avenue, Xiangxiang Economic Development Zone, Xiangtan, Hunan Patentee after: Hunan Aipute Medical Equipment Co., Ltd. Address before: The comprehensive building of Tsinghua Nanshan District Keyuan Road Shenzhen city Guangdong province 518023 room 804 Patentee before: Cheng Zhenghui |