Monoblock type PH electrode catheter and processing methodTechnical field
The present invention relates to the field of medical instrument technology, and in particular to a kind of monoblock type PH electrode catheter and processing method.
Background technique
In therapeutic treatment, esophagus 24 hours PH monitoring system be currently the best inspection method of Gastroesophageal reflux disease andOne of " goldstandard ".PH electrode catheter is the most important component part of esophageal pH monitoring system, and difference PH electrode is led according to demandPipe includes surveying the variety classes such as esophagus pH value, impedance or impedance-pH value.
For detecting the PH electrode catheter of esophagus pH value comprising the catheter body of insulation is equipped in catheter body and dividesThe reference electrode and indicator electrode not connect with conducting wire.Reference electrode is located at the front end of catheter body, and all conducting wires are from conduitThe tail end of ontology is pierced by, then is connect with connector.After being loaded on the impedance ring connecting with conducting wire in catheter body, it can be used for surveyingThe impedance variations in esophagus are measured, and then food liquid is determined whether there is by the height of impedance value and is passed through.
And current PH electrode catheter, using traditional process, as shown in Fig. 1, catheter body is hollow tubeAnd be made of several sub- conduits, whole PH electrode catheter is formed by the way of piecewise adhesive asserably.Specifically: PH electrode catheterIn impedance ring and conducting wire one end welding or it is Nian Jie after, the other end of conducting wire across sub- conduit, the both ends of impedance ring again with sonConduit gluing connects；Indicator electrode is mounted in mounting base, after indicator electrode welds with another conducting wire or is Nian Jie, the conducting wire it is anotherOne end passes through sub- conduit, and mounting base connects with the sub- conduit gluing again；After reference electrode welds with one end of another conducting wire or is Nian JieAlso each sub- conduit, impedance ring and indicator electrode mounting base are needed guiding through.According to the method described above successively weldering or viscous conducting wire, wear sub- conduit,Viscous conduit, until threading is adhesive into whole PH electrode catheter.
The above method is primarily present following defect: (1) high production cost, low efficiency；Such method need to be by several conducting wiresOne end is respectively welded or is bonded on impedance ring, indicator electrode and reference electrode, and the other end of conducting wire is then passed through sub- conduit；It wearsLine, the process for the processing PH electrode catheter such as welding, glue sub- conduit are more, low efficiency and cost of labor is higher.(2) product qualification rateIt is low；Affixed using viscose glue connection between such method impedance ring, reference electrode, indicator electrode and sub- conduit, connection not enough may be usedIt leans on, there is the risks such as sub- conduit connection fracture, leak, to influence product qualification rate.
Summary of the invention
It is an object of the present invention to provide a kind of monoblock type PH electrode catheters, to solve existing catheter body by moreCross-talk conduit composition, each wire need guiding through every root conduit, i.e., problem low because of production efficiency caused by threading.
In order to achieve the above objectives, the present invention adopts the following technical scheme: monoblock type PH electrode catheter, thoroughly does away with edge including oneCatheter body, catheter body is equipped with reference electrode and indicator electrode and/or catheter body is equipped with impedance ring；
Reference electrode, indicator electrode, impedance ring have been electrically connected conducting wire；
Catheter body is the structure around injection molding outside conducting wire；
Embedding modeling has reference electrode, indicator electrode, impedance ring or catheter body to be equipped with connecting pin, ginseng in catheter bodyIt is mounted in catheter body than electrode, indicator electrode, impedance ring by connecting pin；
Reference electrode, indicator electrode, impedance ring part are exposed.
In above-mentioned technical proposal, reference electrode, indicator electrode, impedance ring pass through conducting wire respectively and are located at catheter body rear endPH monitoring system on corresponding data input terminal connection；For detection data, reference electrode, indicator electrode, the equal portion of impedance ringExceptionally reveal.The anti-ring of handicapping in catheter body, then the PH electrode catheter is only capable of measuring the impedance value of esophagus；It is set in catheter bodyReference electrode and indicator electrode, then the PH electrode catheter is only capable of measuring the pH value of esophagus；In catheter body simultaneously the anti-ring of handicapping,Reference electrode and indicator electrode, then the PH electrode catheter can measure the pH value and impedance value of esophagus.
Compared with prior art, catheter body of the invention is the structure around conducting wire injection molding, saved successively threading,The time of the sub- conduit of adhesion improves production efficiency, and can save cost of labor.Furthermore catheter body be one and integral intoType, the risks such as conduit rupture, leak caused by can avoid viscose glue unevenly, improves product qualification rate.
Further, the connecting pin for installing reference electrode is located at the front end of catheter body, and the front of reference electrode, which is exposed to, leadsOutside tube body；Rear end of the conducting wire far from impedance ring, reference electrode and indicator electrode is stretched out from the rear end of catheter body and to extensionIt stretches.Reference electrode is used as with reference to comparing, and is located at the front end of catheter body, and the rear end of conducting wire is stretched out simultaneously from the rear end of catheter bodyExtend outwardly, position setting rationally, is convenient for detection.
Further, the shape of indicator electrode is cylindrical body or cube or cone, and the connecting pin for installing indicator electrode is to setMounting hole on catheter body side wall, indicator electrode are mounted in the mounting hole, one or more faces exposure of indicator electrodeOutside catheter body.
Further, the connecting pin for installing impedance ring is the annular groove being located on catheter body outer wall, and impedance ring is mounted on annular grooveInterior, the outer ring surface of impedance ring is exposed to outside catheter body.
Further, indicator electrode is made of the antimony of purity >=99%.
It is another object of the present invention to provide a kind of method for processing monoblock type PH electrode catheter, this method includes such asLower step:
A integrated injection molding catheter body outside conducting wire；
Connecting pin and catheter body integrated injection molding are process；
Impedance ring on monoblock type PH electrode catheter, reference electrode, indicator electrode are electrically connected with conducting wire by B respectively；
Impedance ring, reference electrode, indicator electrode are mounted on the connecting pin of catheter body by C.
The processing method, first by 1 integrated injection molding of catheter body outside conducting wire 5, then by impedance ring, reference electrode,Indicator electrode is electrically connected with conducting wire, and finally impedance ring, reference electrode and indicator electrode are mounted in catheter body.Conduit sheetBody is integrally formed outside conducting wire, has been saved the time of successively threading, the sub- conduit of adhesion, and avoidable viscose glue unevenly causesThe risks such as conduit rupture, leak.
Further, in step B, conducting wire and impedance ring, reference electrode, indicator electrode connection type be conductive adhesive,One of welding, physical contact or arbitrary combination.
Catheter body, the connection type of conducting wire and impedance ring, reference electrode, indicator electrode are first integrally formed outside conducting wireIt can be physical contact, the non-cutting times such as bonding, welding can be saved using physical contact.
Further, in step C, impedance ring, reference electrode, indicator electrode and the connection type of connecting pin be inlay it is affixed orConductive adhesive.Two ways can make impedance ring, reference electrode, indicator electrode and catheter body be connected firmly, and because leadingTube body itself is integral material, non junction, not easily broken pipe in use process.
It is yet a further object of the present invention to provide a kind of method for processing monoblock type PH electrode catheter, this method includes such asLower step:
Impedance ring on monoblock type PH electrode catheter, reference electrode, indicator electrode are electrically connected with conducting wire by A respectively；
The step A structure obtained is placed into injection mold and is integrally formed by B, after injection molding, conducting wire, impedance ring, ginsengIt is integrated than electrode, indicator electrode and catheter body plastic packaging.
The processing method, first by reference electrode, indicator electrode, impedance ring and conducting wire ginseng that is affixed, then conducting wire will being connected toIt is placed into injection mold and is integrally formed than electrode, indicator electrode and impedance ring, make conducting wire, impedance ring, reference electrode, instruction electricityPole is integrated with catheter body plastic packaging；Manufacturing procedure is simple, and connection is reliable, has saved the time of successively threading, the sub- conduit of adhesion,And the risks such as conduit rupture, leak caused by can avoid viscose glue unevenly.
Further, in step A, conducting wire and impedance ring, reference electrode, indicator electrode connection type be conductive adhesive,The combination of one or both of welding.It is first that reference electrode, indicator electrode, impedance ring and conducting wire is affixed due to needing, it leadsThe connection type of line and impedance ring, reference electrode, indicator electrode is conductive adhesive, welding, and the side of physical contact not can be usedFormula.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) catheter body is the structure of the injection molding outside the conducting wire, saved successively threading, the sub- conduit of adhesion whenBetween, production efficiency is improved, and cost of labor can be saved.
(2) furthermore catheter body is one and integrally formed, conduit rupture, leak caused by can avoid viscose glue unevenly etc.Risk improves product qualification rate.
(3) using the processing method that first will be integrally formed catheter body outside conducting wire, conducting wire and impedance ring, reference electricityPole, indicator electrode connection type can for physical contact, using physical contact can save the non-cutting times such as bonding, welding.
(4) using first by reference electrode, indicator electrode, impedance ring and the affixed processing method of conducting wire, manufacturing procedure is simple,Reference electrode, indicator electrode, impedance ring, conducting wire and catheter body plastic packaging are integrated, and connection is reliable.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the PH electrode catheter of the multisection type of the prior art.
Fig. 2 is the schematic cross-sectional view of the monoblock type PH electrode catheter of the embodiment of the present invention one.
Fig. 3 is the schematic diagram that the monoblock type PH electrode catheter of the embodiment of the present invention one is connect with connector.
Fig. 4 is conducting wire and the schematic cross-sectional view after catheter body integrated molding in the embodiment of the present invention two.
Fig. 5 is that the section view that conducting wire is connect with reference electrode, indicator electrode and impedance ring respectively in the embodiment of the present invention three is shownIt is intended to.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description includes: catheter body 1, sub- conduit 11, annular groove 12, mounting hole 13, reference electricityPole 2, indicator electrode 3, exposed portion 31, impedance ring 4, outer ring surface 41, conducting wire 5, the first conducting wire 51, the second conducting wire 52, privates53, box 6, connector 7 are connected.
Embodiment one
The present embodiment is substantially as shown in Figure 2: monoblock type PH electrode catheter, and the soft catheter body 1 for thoroughly doing away with edge including one is ledEmbedding modeling has reference electrode 2, indicator electrode 3 and impedance ring 4 or catheter body 1 to be equipped with connecting pin on tube body 1, passes through companyConnect end installation reference electrode 2, indicator electrode 3 and impedance ring 4.Reference electrode 2 is located at a front end (i.e. left side in Fig. 2 for catheter body 1End), quantity is one, is preferably made of Ag-AgCl；Indicator electrode 3 is located on the side wall of catheter body 1, and quantity is greater thanIt equal to one, the present embodiment preferably one, is made of the antimony metal of purity >=99%, preferably its purity is 99.99%；ImpedanceRing 4 is looped around on the outer wall of catheter body 1, and quantity is several, and the present embodiment is for three, and impedance ring 4 is by conductionMetal is made, such as 316L stainless steel.
The specific connection type of reference electrode 2, indicator electrode 3 and impedance ring 4 and connecting pin are as follows: installation reference electrode 2Connecting pin is located at the front end of catheter body 1, and the rear portion of reference electrode 2 is inserted into the front-end port of catheter body 1, front exposureOutside catheter body 1.The shape of indicator electrode 3 is cylindrical body or cube or cone, and the connecting pin of installation indicator electrode 3 is to setMounting hole 13 on 1 side wall of catheter body, indicator electrode 3 are mounted in the mounting hole 13, the one or more of indicator electrode 3Face is exposed to outside catheter body 1, i.e., has exposed portion 31 on indicator electrode 3.The connecting pin of installation impedance ring 4 is to be located at catheter bodyAnnular groove 12 on 1 outer wall, three impedance rings 4 are separately mounted in annular groove 12, and the outer ring surface 41 of impedance ring 4 is exposed to catheter bodyOutside 1.The connection type of reference electrode 2, indicator electrode 3 and impedance ring 4 and catheter body 1 is plastic packaging, glue sticking, inlays, is clampedOr it is welded and fixed.
Reference electrode 2, indicator electrode 3 and impedance ring 4 are electrically connected the conducting wire 5 of mutually insulated, and connection type can be withFor conductive adhesive, tin welding, flash butt welding, Laser Welding, physical contact etc..Five conducting wires 5 are shared in Fig. 2, catheter body 1 isAround the structure of 5 outside injection molding of conducting wire；After conducting wire 5 and 1 injection molding of catheter body, the PH electrode catheter is generally solidStructure, the insulating layer fusing of conducting wire 5, the insulating layer of conducting wire 5 are made or outside conducting wire 5 of heat-resisting material when to prevent injection moldingIt is enclosed with the high-temperature-resistant layer of masking foil etc..Connecting with reference electrode 2 is the first conducting wire 51, and connecting with indicator electrode 3 isTwo conducting wires 52, connecting with impedance ring 4 is privates 53.Catheter body is stretched out in the rear end (i.e. right end in Fig. 2) of conducting wire 51 rear end simultaneously extends outwardly, and in conjunction with Fig. 3 it is found that the rear end of conducting wire 5 is electrically connected with connector 7, is monitored by connector 7 and PHCorresponding data input terminal connection in system, the connection between certain connector 7 and conducting wire 5 can also pass through a connection box 6Connection, such junction are more attractive.
Since the PH electrode catheter includes impedance ring 4, indicator electrode 3 and reference electrode 2, the PH of esophagus can measureValue and impedance value.
Embodiment two
A kind of method of monoblock type PH electrode catheter in process embodiment one, includes the following steps:
A is in the external integrated injection molding catheter body of conducting wire 5 (i.e. the first conducting wire 51, the second conducting wire 52 and privates 53)1；1 integrated injection molding of connecting pin and catheter body of reference electrode 2, indicator electrode 3 and impedance ring 4 is installed.With 5 one of conducting wireCatheter body 1 after molding is as shown in figure 4, lead end has been reserved in the front end (i.e. the left end of Fig. 4) of conducting wire 5, positioned at connectionAt end；The right end of conducting wire 5 passes through the right end of catheter body 1 and extends outwardly.Certain connecting pin can also be in molding catheter body 1On reprocess.
Impedance ring 4, reference electrode 2 and indicator electrode 3 are electrically connected with conducting wire 5 by B respectively.Conducting wire 5 and impedance ring 4, ginsengIt is one of conductive adhesive, welding, physical contact or arbitrary combination than the connection type of electrode 2, indicator electrode 3.
Impedance ring 4, reference electrode 2, indicator electrode 3 in step B is mounted on the connecting pin of the catheter body 1 of step A by COn.Impedance ring 4, reference electrode 2, indicator electrode 3 and the connection type of connecting pin are to inlay affixed or conductive adhesive.
The processing method, first by 1 integrated injection molding of catheter body outside conducting wire 5, then by impedance ring 4, reference electrode 2And indicator electrode 3 is electrically connected with conducting wire 5, and impedance ring 4, reference electrode 2 and indicator electrode 3 are finally mounted on catheter bodyOn 1.
Embodiment three
Another method of monoblock type PH electrode catheter in process embodiment one, the processing method are different from embodimentTwo, include the following steps:
A as shown in figure 5, by reference electrode 2, indicator electrode 3 and impedance ring 4 respectively with the first conducting wire 51, the second conducting wire 52It is affixed with privates 53；Specific fixed connection mode is one of conductive adhesive, tin welding, flash butt welding, Laser Welding or appointsThe combination of meaning.
The structure obtained in step A is placed into injection mold and is integrally formed by B, after injection molding, conducting wire 5, impedance ring4, reference electrode 2 and indicator electrode 3 are integrated with 1 plastic packaging of catheter body.
The processing method, it is first that reference electrode 2, indicator electrode 3 and impedance ring 4 and conducting wire 5 is affixed, then conducting wire will be connected to5 reference electrode 2, indicator electrode 3 and impedance ring 4 are placed in a mold, conducting wire, impedance ring, reference electrode, indicator electrode and are ledTube body plastic packaging is integrated.
Example IV
The difference is that, the present embodiment only sets reference electrode 2 and indicator electrode 3 in catheter body 1 with implementation one,Then the PH electrode catheter is only capable of measuring the pH value of esophagus.It also uses the processing method in embodiment two or three to be made, herein notIt repeats again.
Embodiment five
With implement one the difference is that, the present embodiment only anti-ring 4 of the handicapping in catheter body 1, then the PH electrode is ledPipe is only capable of measuring the impedance value of esophagus.It also uses the processing method in embodiment two or three to be made, and details are not described herein.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these also should be considered as guarantor of the inventionRange is protected, these all will not influence the effect and patent practicability that the present invention is implemented.The present invention omits the technology of description, shapeShape, construction portion are well-known technique.