CN102274018B - 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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- CN102274018B CN102274018B CN201110133670.7A CN201110133670A CN102274018B CN 102274018 B CN102274018 B CN 102274018B CN 201110133670 A CN201110133670 A CN 201110133670A CN 102274018 B CN102274018 B CN 102274018B
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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 to mapping diagnosis use and preparation method thereof and using method.
Background technology
At present, IVT (chamber speed) adopts radiofrequency ablation therapy to have very high success rate, 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 the patient of Epicardium for the chamber speed focus running into clinically, take endocardial mapping as basic radio-frequency (RF) ablation method usually helpless.Because being " setting netted ", coronary artery and branch thereof be clouded in locular wall cardiac muscle, normal person's coronary artery and branch's internal diameter are only 3～4mm, complex structure, conventional crown arterial intervention operating difficulty is larger, and exchange guidewire length used 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 to mapping diagnosis, therapeutic room's speed focus is positioned to the patient of Epicardium, have significant.In prior art, also do not have a kind of intervention apparatus can be reliably to carry out Electrophysiological mapping to being positioned at epicardial anterior descending branch coronarius, convolution, right coronary artery inside etc. exactly.
Summary of the invention
The object of this invention is to provide a kind of Quick exchange standard measurement pipe and preparation method thereof and using method, the technical problem that solve is fast electrocardiosignal in coronary artery to be carried out to mapping.
The present invention is by the following technical solutions: a kind of Quick exchange standard measurement pipe, the far-end of described Quick exchange standard measurement pipe is provided with the outer tube of tubulose, the inner tube of tubulose is set in outer tube, inner tube and outer tube are welded to connect at distal end, proximal outer tube side has a thread eye, thread eye and inner tube proximal port are welded to connect, between the proximal end of outer tube and union joint, be connected with stainless steel tube, ring electrode is equipped with in distal outer tube end, one end of the inwall welding lead of ring electrode, the wire other end is connected to union joint in outer tube bore, stainless steel tube.
Far-end one side and inner tube proximal port one side of thread eye of the present invention are welded to connect, near-end one rear flank that is bent to thread eye to thread eye direction with arc transition at near-end one side of thread eye, the tube wall relative with inner tube proximal port one side is welded to connect, again by far-end one side to near-end one side, thread eye and inner tube proximal port arc transition are smoothly welded to connect.
Inner tube of the present invention is positioned at inwall one side that thread eye direction is close in outer tube inside.
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; Described inner tube external diameter is 0.40mm to 0.42mm, 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 inner tube, 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 distal outer tube end; Two pairs of spacing between electrodes are 10mm, and every pair of spacing between electrodes is 1mm.
Outer tube of the present invention and inner tube adopt block copolymer, and ring electrode is processed by platinum, gold, platinum.
The distal outer of inner tube of the present invention and the welding of distal outer tube inwall, 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 taper shape is 10mm to 20mm along the axial length of outer tube.
A kind of preparation method of Quick exchange standard measurement pipe, comprise the following steps: one, prepare outer tube, by 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, the rustless steel syringe needle that is 1mm with external diameter pierces a thread eye and eight to 20 electrode cable holes outward at tube wall, thread eye is apart from far-end end 230mm to 235mm, electrode cable pitch-row starts from distal outer tube end 38mm to 40mm, distributes by spacing 1mm-10mm-1mm rule; Two, preparation inner tube, 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 inner tube of 230mm to 235mm, it is 0.34mm to 0.36mm that inner tube is inserted in to diameter, on the stainless steel bar that length is 250mm to 260mm, inner tube is inserted to 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, by inner and outer pipes far-end 335 ℃ of heat shrink, heating 20s, welding between far-end inner and outer pipes, by inner and outer pipes near-end 335 ℃ of heat shrink thread eyes one week, heating 10s, welding between near-end thread eye place and inner tube; Four, electrode retaining collar and wire assembling, by copper cash wire one end, weld with platinum iridium alloy electrode ring inwall, the wire other end is penetrated in outer tube from the wire guide of outer tube, send to until electrode retaining collar arrives distal outer tube to proximal outer tube, electrode retaining collar is inserted in to the position to corresponding wire guide, then wire 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 wire of extraction is penetrated to near-end from the far-end of stainless steel tube, proximal outer tube is enclosed within on 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 stainless steel tube near-end, before shrinking, internal diameter is 1.47mm to 1.53mm, 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 Connection Block, and welding temperature is set to 400 ℃ to 480 ℃, and Quick exchange standard measurement pipe completes.
A kind of using method of Quick exchange standard measurement pipe, comprise the following steps: one-sided femoral artery one, punctures, coronary artery is carried out to 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 crotch, take out conventional seal wire, replacing diameter is 0.36mm, the long seal wire for 1.8m to 2.0m along in guiding catheter to arteria coronaria inside; Two, seal wire near-end is penetrated to Quick exchange standard measurement pipe far-end, stretch out from thread eye, Quick exchange standard measurement pipe is fed through wire distal in along seal wire near-end from guiding catheter, and Quick exchange standard measurement pipe ring electrode far away is delivered to respectively anterior descending branch coronarius, convolution, right coronary artery inside; Three, Quick exchange standard measurement pipe is connected to polygraph by cable, the ring electrode of distal end of catheter transmits out by the electrocardiosignal in arteria coronaria, exciting distribution, route of transmission signal, and doctor, by detecting electrocardiogram, determines lesions position; Four, ablation catheter is delivered to cardiac lumen affected area and carried out radiofrequency ablation therapy; Five, the ring electrode of distal end of catheter transmits out by the electrocardiosignal in arteria coronaria, exciting distribution, route of transmission signal, and doctor observes mapping position electrocardiogram in arteria coronaria, normal, withdraws from guiding catheter, seal wire, Quick exchange standard measurement pipe and ablation catheter.
The present invention compared with prior art, the far-end of Quick exchange standard measurement pipe is provided with outer tube, inner tube is set in outer tube, proximal outer tube side has a thread eye, thread eye and inner tube proximal port are welded to connect, ring electrode is equipped with in distal outer tube end, utilize the shorter seal wire of diameter that conduit is sent into far-end mapping position, shorten greatly the time of operation, to being positioned at epicardial anterior descending branch coronarius, convolution, Electrophysiological mapping is carried out in right coronary artery inside, the patient that can be positioned at Epicardium to the fast focus in chamber carries out radio-frequency (RF) ablation operation and offers help, accurate location to operation provides more definite foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the distribution schematic diagram of the ring electrode of the embodiment of the present invention.
Fig. 3 is the inner tube of the embodiment of the present invention and the structural representation of distal outer tube end.
Fig. 4 is the inner tube structural representation of portion position within the outer tube of the embodiment of the present invention.
Fig. 5 is the thread eye structural representation of the embodiment of the present invention.
Fig. 6 is the inner tube structure schematic diagram of the embodiment of the present invention.
Fig. 7 is the stainless steel tube of the embodiment of the present 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 standard measurement pipe of the present invention, is provided with the outer tube 1 of tubulose at its far-end, the interior inner tube 2 that tubulose is set of outer tube 1, and inner tube 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 inner tube 2 proximal port, far-end one side 61 of thread eye 6 is welded to connect with inner tube 2 proximal port one sides, in near-end one side 62 of thread eye 6, the tube wall relative with inner tube 2 proximal port one sides 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 is smoothly welded to connect with inner tube 2 proximal port arc transition.Between the proximal end 7 of outer tube 1 and union joint 4, be connected with stainless steel tube 3.
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.
Inner tube 2 external diameters are 0.40mm to 0.42mm, and internal diameter is 0.37 to 0.40mm, long 230mm to 235mm.
Thread eye 6 is 5mm to 6mm along the length of the axial direction of inner tube 2, and width is 0.42mm to 0.44mm.
Stainless steel tube 3 external diameters are 0.68mm to 0.72mm, and internal diameter is 0.66mm to 0.70mm, long 1110mm to 1120mm.
The block copolymer PEBAX that outer tube 1 and inner tube 2 adopt French A Kema Arkema company to produce.
As shown in Figure 2, outer tube 1 is made up of outer tube wall 8, the ring electrode 9 that is arranged on outer tube wall 8 outer walls, between outer tube 1 inwall and inner tube 2, is outer tube bore 10.
Outer tube wall 8 distal ends are equipped with four to ten pairs of ring electrodes 9, play mapping effect, can coronary artery inside lesions position be positioned and be diagnosed.Ring electrode 9 is processed by platinum, gold, platinum, and this metalloid powered is good, and has good biocompatibility.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.Two pairs of spacing between electrodes are 10mm, and every pair of spacing between electrodes is 1mm, both on outer tube wall 8 between 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 wire 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 standard measurement pipe, inner tube 2 is welded to connect in outer tube 1, the distal outer of inner tube 2 and outer tube 1 far-end inwall welding, 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, inner tube 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 inner tube 2 are inner chamber 13, and seal wire 14 imports from the thread eye 6 of inner tube near-end, the far-end along the inner chamber 13 of inner tube 2 to inner tube 2.
The conduit of prior art, seal wire penetrates the far-end along conduit to conduit from the near-end connector position of conduit.Seal wire 14 of the present invention imports inner tube 2 from thread eye 6, move very short distance and just arrive the distal end of inner tube 2 at the inner chamber 13 of inner tube 2, therefore conduit can be selected shorter seal wire, can reduce operating time, improve operation efficiency, therefore, also referred to as exchanging fast (RX, rapid exchange) mapping catheter.
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 mark action, 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 standard union joint, and the wire welding with ring electrode 9 all can be welded on the contact pin in union joint 4, by the outside prolongation cable connecting of union joint 4, 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 taper shape is 10mm to 20mm along the axial length of outer tube 1.On the length direction of stainless steel tube 3, be printed on degree of depth indicating graduation 17, may be displayed on conduit in operation process and enter the length in human body.The long 5mm of first deep calibration of far-end, apart from outer tube 1 distal end 765mm to 775mm.Second long 10mm of deep calibration of far-end, apart from outer tube 1 distal end 860mm to 865mm.
The preparation method of Quick exchange standard measurement pipe of the present invention, comprises the following steps:
One, prepare outer tube:
1, use 35 type extruders of Dongguan City Sheng An plastics machinery company limited, 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, the rustless steel syringe needle that is 1mm with external diameter is a manual thread eye and eight to 20 the electrode cable holes of piercing outside tube wall, thread eye is being located apart from far-end end 230mm to 235mm, electrode cable hole is at the opposite side of thread eye, each hole is arranged on same straight line, electrode cable hole, from apart from outer tube 1 distal end 38mm to 40mm, distributes by spacing 1mm-10mm-1mm rule.
Two, preparation inner tube
1, use 35 type extruders of Dongguan City Sheng An plastics machinery company limited, 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 inner tube of 230mm to 235mm, screw speed 30r/min is set, barrel pressure 2000Mpa, hauling speed 30m/s.
2, inner tube being inserted in by hand to diameter 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 inner tube is inserted to 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, the Bei Site electronic tool 850+ of factory type hot-air blower is opened, be heated to 335 ℃, by the inner and outer pipes far-end assembling heat shrink under hot-air blower, heating 20s, between far-end inner and outer pipes, welding is firm.Outer tube welding section external heat is shunk and is formed taper shape, and conical axial length is 4mm to 10mm.
2, the Bei Site electronic tool 850+ of factory type hot-air blower is opened, be heated to 335 ℃, by the inner and outer pipes near-end assembling heat shrink thread eye one week under hot-air blower, heating 10s, between near-end thread eye place and inner tube, welding is firm.
Four, electrode retaining collar and wire assembling
1, by copper cash wire one end of the U.S. MWS Wire Industries 39# of company (RED) HPN-155, platinum iridium alloy electrode ring inwall welding with Kunming Bo Rui metal material company limited, 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, the SLD-936 type welding gun that adopts Xin Lida Electron Group Co., Ltd of Shenzhen, welding temperature is set to 400 ℃ to 480 ℃.
2, the wire other end is penetrated in outer tube from the wire guide of outer tube, send to until electrode retaining collar arrives distal outer tube to proximal outer tube, by hand electrode retaining collar is inserted in to the position to corresponding wire guide, then wire is extracted out from proximal outer tube.
3, assembled after ring electrode, the stainless steel bar of interior tube cavity has been 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 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 marking machine parameter is set, marking speed is 100mm/s, marking continuously.
2, the wire of extraction is penetrated to near-end from the far-end of stainless steel tube.
3, proximal outer tube is enclosed within on stainless steel tube, under the 850+ type hot-air blower of Bei Site electronic tool factory, shrinks, it is conical that contraction front is, the long 10mm to 20mm of axis, 335 ℃ of set temperatures, time 120s.
Six, joint assembling
1, by Shenzhen Changyuan Electron Material Co., Ltd
type stress release pipe, be nested with at stainless steel tube near-end, before shrinking, internal diameter is 1.47mm to 1.53mm, external diameter is 1.67mm to 1.73mm, under the 850+ type hot-air blower of Bei Site electronic tool factory, shrink 240 ℃ of set temperatures, time 20s, having shunk internal diameter is 0.70mm to 0.75mm, and external diameter is 1.20mm to 1.25mm.
2, by the SLD-936 of Xin Lida Electron Group Co., Ltd of Shenzhen type welding gun for lead proximal end, 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 standard measurement pipe completes.
The using method of Quick exchange standard measurement pipe of the present invention, comprises the following steps:
One, the one-sided femoral artery that punctures according to a conventional method, coronary artery is carried out to 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, crotch arteria coronaria is divided into anterior descending branch, the convolution of arteria coronaria and props up and right hat, take out conventional seal wire, replacing diameter is 0.36mm, the long seal wire for 1.8m to 2.0m along in guiding catheter to arteria coronaria inside.
Two, observe mapping target position by radiography, seal wire near-end is penetrated to Quick exchange standard measurement pipe far-end of the present invention, stretch out from thread eye, Quick exchange standard measurement pipe is fed through wire distal in along seal wire near-end from guiding catheter, by the guide of guiding catheter, the electrode tip tube portion that Quick exchange standard measurement pipe far-end is equipped with to ring electrode is delivered to respectively anterior descending branch coronarius, convolution, right coronary artery inside, this process seal wire used only needs 1.8m to 2.0m, shorten the time of exchange guidewire in operation, improved treatment speed.
Three, Quick exchange standard measurement pipe is connected to polygraph by cable, the ring electrode of distal end of catheter can be expressed the electrocardiosignal in arteria coronaria, exciting distribution, route of transmission signal transmission, clear and definite display room speed lesions position, the patient that the fast focus in chamber is positioned to Epicardium carries out radio-frequency (RF) ablation operation and offers help, doctor, by detecting electrocardiogram, just can determine lesions position.
Four, seal wire, guiding catheter and Quick exchange standard measurement pipe continue to place in arteria coronaria, row femoral venous puncture again, be 0.36mm by diameter, the conventional seal wire of long 2.3m to 4.0m and guiding catheter are delivered to after right ventricle's intracavity, withdraw from conventional seal wire, then send ablation catheter to cardiac lumen affected area to carry out radiofrequency ablation therapy along guiding catheter.
Five, after melting, the ring electrode of Quick exchange standard measurement pipe far-end is expressed indoor electrocardiosignal, exciting distribution, route of transmission signal transmission, doctor observes mapping position electrocardiogram in arteria coronaria, if normal, withdraws from guiding catheter, seal wire, Quick exchange standard measurement pipe and ablation catheter.
The present invention carries out coronary artery with ring electrode and gets involved mapping diagnosis, with diameter be 0.36mm, long only for the seal wire of 1.8m to 2.0m can penetrate to anterior descending branch coronarius from thread eye, convolution, mapping is carried out to chamber speed focus in right coronary artery inside, in intervene operation process, the shorter and diameter of seal wire used is only required to be 0.36mm, thread eye and interior tube cavity exchange guidewire fast, make Quick exchange standard measurement pipe and other adnexaes there is sharp separation, the feature that seal wire slippage rate is low, can obviously shorten in operation process seal wire apparatus swap time, improve treatment speed.
The present invention can utilize diameter for 0.36mm, and length is only sent conduit into far-end mapping position for the seal wire of 1.8m to 2.0m, can shorten greatly the time of operation, raising speed by quick exchange guidewire.Therefore, to being positioned at epicardial anterior descending branch coronarius, convolution, Electrophysiological mapping is carried out in right coronary artery inside etc., the patient that can be positioned at Epicardium to chamber speed focus carries out radio-frequency (RF) ablation operation and offers help.In coronary artery, getting involved mapping can express excitement distribution, the route of transmission of studied Epicardium lesions position, can sketch out each exciting sequencing and exciting compliance, activity and the state variation of cardiac muscle, provide how accurate information than endocardial mapping electrocardio mode, provide more definite foundation to the accurate location of operation.
Embodiment, Quick exchange standard measurement pipe is of a size of: outer tube external diameter is 1.1mm, internal diameter 0.9mm, long 350mm, is equipped with 8 ring electrodes apart from distal end 38mm place according to the spacing of 1mm-10mm-1mm, ring electrode external diameter 1.0mm, width is 1.0mm, wall thickness 0.05mm.Inner tube external diameter 0.4mm, internal diameter 0.37mm, long 230mm.Rustless steel pipe range 1110mm, external diameter is 0.68mm, internal diameter 0.68mm.Having thread eye apart from 235mm place, distal outer tube end, seal wire can be fed through from thread eye the far-end of outer tube.
The Canis familiaris L. that is 25.5 kilograms to body weight carries out mapping in coronary artery, punctures through femoral artery, confirms coronary artery position under angiography, under the supervision of X ray, sends into conventional seal wire and guiding catheter.Reverse guiding catheter and enter coronary ostium, radiography is observed guiding catheter position, confirm after correct position, take out conventional seal wire, in coronary artery, insert the seal wire that diameter is 0.36mm through guiding catheter, be 0.36mm by the far-end of Quick exchange standard measurement pipe from diameter, the long seal wire near-end for 1.8m to 2.0m penetrates, seal wire near-end is passed from the side thread eye of mapping catheter, under the impulse of guiding catheter, Quick exchange standard measurement pipe is sent in arteria coronaria, Quick exchange standard measurement pipe near-end union joint is connected to and is led on instrument more, read the electrocardiogram at mapping position in 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, after melting, observe mapping position electrocardiogram in arteria coronaria, normally, this mapping and ablation procedure success are described.
Claims (2)
1. a Quick exchange standard measurement pipe, it is characterized in that: the far-end of described Quick exchange standard measurement pipe is provided with the outer tube of tubulose (1), the inner tube (2) of tubulose is set in outer tube (1), inner tube (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 inner tube (2) proximal port, between the proximal end (7) of outer tube (1) and union joint (4), be connected with stainless steel tube (3), outer tube (1) distal end is equipped with ring electrode (9), one end of the inwall welding lead of ring electrode (9), the wire other end is through outer tube bore (10), in stainless steel tube (3), be connected to union joint (4),
Far-end one side (61) of described thread eye (6) is welded to connect with inner tube (2) proximal port one side, 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 with inner tube (2) proximal port one side after, be welded to connect, again by far-end one side (61) to near-end one side (62), thread eye (6) and inner tube (2) proximal port arc transition are smoothly welded to connect;
Described inner tube (2) is positioned at inwall one side that thread eye (6) direction is close in outer tube (1) inside;
Described outer tube (1) external diameter scope is 0.9mm to 1.2mm, and inside diameter ranges is 0.7mm to 1.0mm, and length range is 350mm to 360mm; Described inner tube (2) external diameter scope is 0.40mm to 0.42mm, and inside diameter ranges is 0.37 to 0.40mm, and length range is 230mm to 235mm; Described thread eye (6) is 5mm to 6mm along the length range of the axial direction of inner tube (2), and width range is 0.42mm to 0.44mm; Described stainless steel tube (3) external diameter scope is 0.68mm to 0.72mm, and inside diameter ranges is 0.66mm to 0.70mm, and length range is 1110mm to 1120mm; Described wire diameter scope is 0.086mm to 0.091mm; The external diameter scope of described ring electrode (9) is 0.9mm to 1.2mm, and width range is 0.9mm to 1.2mm, and wall thickness range is 0.03mm to 0.1mm;
Described ring electrode (9) is four to ten pairs;
Described ring electrode (9) is 38mm to 40mm apart from outer tube (1) distal end; Two pairs of spacing between electrodes are 10mm, and every pair of spacing between electrodes is 1mm;
Described outer tube (1) and inner tube (2) adopt block copolymer, and ring electrode (9) is processed by platinum, gold, platinum;
The distal outer of described inner tube (2) and the welding of outer tube (1) far-end inwall, it is conical that outer tube (1) welding section (11) outside is, and the axial length range 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 taper shape is 10mm to 20mm along the axial length scope of outer tube (1).
2. the preparation method of a Quick exchange standard measurement pipe, comprise the following steps: one, prepare outer tube, by block copolymer raw material, being extruded into external diameter scope is 0.9mm to 1.2mm, inside diameter ranges is 0.7mm to 1.0mm, length range is the outer tube of 350mm to 360mm, the rustless steel syringe needle that is 1mm with external diameter pierces a thread eye and eight to 20 electrode cable holes outward at tube wall, thread eye is apart from far-end end 230mm to 235mm, electrode cable pitch-row starts from distal outer tube end 38mm to 40mm, distributes by spacing 1mm-10mm-1mm rule; Two, preparation inner tube, block copolymer raw material, being extruded into external diameter scope is 0.40mm to 0.42mm, inside diameter ranges is 0.37 to 0.40mm, length range is the inner tube of 230mm to 235mm, it is 0.34mm to 0.36mm that inner tube is inserted in to diameter range, on the stainless steel bar that length range is 250mm to 260mm, inner tube is inserted to 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, by inner and outer pipes far-end 335 ℃ of heat shrink, heating 20s, welding between far-end inner and outer pipes, by inner and outer pipes near-end 335 ℃ of heat shrink thread eyes one week, heating 10s, welding between near-end thread eye place and inner tube; Four, electrode retaining collar and wire assembling, by copper cash wire one end, weld with platinum iridium alloy electrode ring inwall, the wire other end is penetrated in outer tube from the wire guide of outer tube, send to until electrode retaining collar arrives distal outer tube to proximal outer tube, electrode retaining collar is inserted in to the position to corresponding wire guide, then wire 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 scope is 0.68mm to 0.72mm, and inside diameter ranges is 0.66mm to 0.70mm, length range is 1110mm to 1120mm, the wire of extraction is penetrated to near-end from the far-end of stainless steel tube, proximal outer tube is enclosed within on 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
1.0 type stress release pipes, be nested with at stainless steel tube near-end, before shrinking, inside diameter ranges is 1.47mm to 1.53mm, and external diameter scope is 1.67mm to 1.73mm, at 240 ℃, time 20s, shrinks, and having shunk inside diameter ranges is 0.70mm to 0.75mm, external diameter scope is 1.20mm to 1.25mm, lead proximal end is welded on Connection Block, and welding temperature is set to 400 ℃ to 480 ℃, and Quick exchange standard measurement pipe completes.
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| CN102579031B (en) * | 2012-01-19 | 2014-10-01 | 洪浪 | Right ventricular outflow tract mapping and angiographic catheter and preparation method of angiographic catheter |
| CN102551705B (en) * | 2012-01-19 | 2014-01-29 | 赖珩莉 | Auricular tachycardia mapping catheter and preparation method thereof |
| CN102579037B (en) * | 2012-01-19 | 2015-02-04 | 洪浪 | Coronary vein mapping catheter and preparation method thereof |
| 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 |
| 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 |
| 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 |