The braided blood vessel stent induction system and its application method of a kind of one-handed performanceTechnical field
The present invention relates to the braided blood vessel stent induction system and its application method of a kind of one-handed performance, belong to minimally invasive medicalTechnique with the apparatus field.
Background technology
Human body artery is the passage that blood is transported to corporal parts from heart, due to Wall of Artery lipidosis andPatch is formed, and arterial lumen can be caused narrow, or even is blocked, and this process is referred to as atherosclerosis obturation, thus leadsCause artery ischemia.Limb artery hardening obliteranses are that the continuous expansion of athero- material in limb artery and secondary thrombus are formed, and are drawnPlay that ductus arteriosus wall is narrow, obturation, limbs a kind of chronic or acute ischemia symptom disease is occurred.
Treatment atherosclerotic occlusive disease mainly has two class methods at present：Drug therapy and operative treatment.Drug therapy is mainFor morning, mid-term patient, or as operation and the supplementary means of PCI.Operative treatment purpose is to rebuild arterial blood circulationRoad, improves limbs blood supply, there is 3 kinds of methods at present,（1）Arterial bypass, using artificial blood vessel or Saphenous vein, in obturationBlood vessel is near, set up bypass between the normal blood vessels of distal end；（2）Endarterectomy, it is adaptable to which short section master, ilium are narrow or inaccessiblePatient, seldom uses；（3）Percutaneous transluminal angio plasty/Stent, is Minimal invasive procedures, and operation risk is low, woundFace healing is very fast.The method is through arteriopuncture, conveying foley's tube to arteriarctia or the position of obturation, expansion, reconstruction arteryTube chamber, with reference to the use of intravascular stent, can obtain preferable clinical effectiveness, and first-selected treatment method has been turned at present.
Intravascular stent is needed by induction system in being implanted to arteries, and in the prior art, induction system is typically usedThe hollow bowl and outer tube being mutually socketed, intravascular stent are set between the inner and outer pipe sections, and inner tube is a hollow structure, inside itSeal wire is penetrated when cavity is easy to operation；During operation, duct unit is transported to operative region by induction system by the guiding of seal wire,Control unit performs relative motion outer tube and inner tube, and intravascular stent launches and pastes blood vessel during it, plays the work of supportWith.
Because the length of the arterial occlusion section of clinically patient is different so that the length of intravascular stent has been limited, and is causedThe conveying stroke of induction system is more long, and the structure of induction system is restricted, and is not easy to the operation technique of medical personnel, and bloodThere is certain resistance in pipe holder, and the delivery device of induction system there is also certain frictional force in course of conveying, causeInduction system needs larger push power, is easily caused intravascular stent conveying unstable, in fact it could happen that support front jumping, the shape such as trembleCondition, severe patient can even make intravascular stent produce skew, have influence on the normal progression of operation.When clinically support used is braidingDuring type support, during release, support is easily elongated or distorts overlap to support, when support is elongated, axial support force dropIt is low, easily cause support long term narrow；When support is distorted to be overlapped, injury of blood vessel can be influenceed, it is serious the need for pass through surgical operationSupport is taken out, larger injury is caused to patient.
The content of the invention
It is an object of the invention to solve above-mentioned technical problem, a kind of braided blood vessel stent conveying of one-handed performance is proposedSystem and its application method.
First purpose of the invention, a kind of braided blood vessel stent induction system of one-handed performance, including duct unit andConveying device, the duct unit is connected with conveying device and is driven by the conveying device, and the duct unit includes outer tubeWith the inner tube for being arranged at outer tube, the intravascular stent be positioned between outer tube and inner tube and by inner tube drive, the conveyingDevice includes a housing, and the outer tube is connected with housing, and particularly, the housing includes left housing and right shell, the side of the left housingWall is provided with fluting, and the inside of the housing is disposed with lock tube, gathering sill and push button mechanism, i.e. push button mechanism and sets from outside to insidePut inside gathering sill, gathering sill is located at the inside of lock tube, lock tube is located at the inside of housing, and the lock tube can be around gathering sillMake axial rotation, the lock tube includes stop collar and matched bushing, "the" shape groove is provided with stop collar, outside stop collarSurface is provided with one group of torsion, and the rotation that can realize stop collar is turned round by stirring, and then drives the rotation of lock tube, dials torsion and is definedMoved in the fluting of left housing, an internal channel is additionally provided with inside the front end of stop collar, the push button mechanism can be along gathering sillInner chamber make before and after linear reciprocating motion, the "the" shape groove of the stop collar can limit moving forward and backward for push button mechanism, instituteState gathering sill and lock tube and enclosure interior be fixedly installed in after by preceding fixation, preceding fixation coordinates with the front end of gathering sill installs,The fixed rear end with gathering sill coordinates and installs afterwards, and said inner tube is connected with push button mechanism and drives it to move by push button mechanism, instituteState housing afterbody and be provided with female Luer and flush-through connection, the female Luer is by being oriented to fastener for connection in rear fixation, the punchingJoint is washed by infusion tube and transfusion fastener for connection in preceding fixation, and flush-through connection and outer tube and inner tube middle cavity phaseIt is logical.
Further, one is fixedly connected with said inner tube for discharging the push pawl of intravascular stent, the push pawl byRound shape portion and elastic claw are constituted, and the elastic claw is inconsistent with intravascular stent.
Further, the "the" shape groove of the stop collar is made up of initial slot, push groove, lead-over groove and release groove, releasesPutting groove also includes its distal openings.
Further, the lead-over groove pushes groove and release groove for connecting, and the length of the push groove and release groove canWith it is equal can also be unequal.
Further, the bushing is provided with boss and dome ring, and boss coordinates with the opening of the release groove of stop collar, togetherWhen dome ring matched with the internal channel of stop collar.
Further, " 0 ", " 1 " and " 2 " totally 3 station location markers are provided with the left housing, are respectively used to represent lock tubeZero position, 1 position and 2 positions.
Further, when lock tube is in zero position, represent that push button mechanism is in initial position, it is impossible to move, support is alsoCan not move, when group torsion turns to 1 position, represent that push button mechanism can move forward and backward in lead-over groove, 2 are turned to when torsion is dialledDuring position, represent that push button mechanism can move in release groove.
Further, flush-through connection have the function of check valve, i.e. liquid by flush-through connection inject induction system after, liquidBody cannot be backflowed out of and, and prevent contaminated operation table top.
Further, push button mechanism includes thumb button, connecting portion and channel bar, and the thumb button and connecting portion pass through with channel barThe mode of integrated injection molding is connected, and the square opening that the front end of the channel bar opens up is connected with inner tube, and the rear end of channel bar is fixed after passing throughInsertion is oriented to the inner chamber of steel pipe.
Second object of the present invention, a kind of application method of the braided blood vessel stent induction system of one-handed performance, it is specialLevy is to include following operating procedure：
A) preparation process：Vascular puncture, angiography catheter is inserted in point of puncture, then penetrates seal wire so that seal wire reaches focus portionPosition, operative region is entered by the duct unit of induction system along seal wire, now dials torsion in zero position, and support is limited at interiorCannot be moved between pipe and outer tube；
B) initial stage release steps：Stir torsion and lock tube is gone into 1 position by zero position, then push ahead push button mechanism, inner tubeTravelled forward under the drive of channel bar, promote push pawl to travel forward, drive intravascular stent to release outer tube；Then push button machine is withdrawnStructure retracts inner tube, and because the elastic claw for pushing pawl has elasticity, during inner tube withdraws, elastic claw can be to contract, will notEffect to support applying power, therefore support will not be moved so that push pawl and return to initial position, before so repeating push button mechanismEnter and withdraw action, intravascular stent is gradually discharged outer tube；
C) complete release steps：When push button mechanism advances in step b, support is no longer pushed out outer tube, and now stirring torsion willLock tube goes to 2 positions by 1 position, and push button mechanism comes release groove, then promotes pushing button structure, support to be completely released forward.
Compared with prior art, the beneficial effects of the invention are as follows：
Induction system can carry out one-handed performance, and the another hand of doctor is released in surgical procedure, can carry out otherOperation.
The different motion of push button mechanism is realized with a stop collar with "the" shape groove, so as to realize the first of supportBegin static and discharge, i.e., when push button mechanism is in the initial slot of stop collar, support cannot be moved, when push button mechanism is in spacingDuring the push groove of set, support starts release, but support can not be released into outside outer tube completely, when push button mechanism is in stop collarRelease groove groove when, support is completely released to outside outer tube.
Inner pipe sections are using specific elasticity chip architecture so that the direct propulsion mode of induction system is changed into reciprocal propulsion sideFormula, each support release travel is short, not by the length limitation of intravascular stent.Meanwhile, support discharges paragraph by paragraph, is conveyed during releaseDevice pushing piece applies compression stress to support axial direction so that the support for holding elongation by pressure in conveyer assembling process can be as far as possibleRecover green diameter and shape, can effectively prevent support long term narrow.
Doctor only need to stir group torsion of lock tube, promote the thumb of push button mechanism to be good for thumb, it is possible to realize releasing for supportPut, it is simple to operate.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will use needed for embodiment descriptionAccompanying drawing be briefly described.It is readily apparent that drawings in the following description are only specific some described in the applicationEmbodiment, it is not the limitation to protection scope of the present invention.For those of ordinary skill in the art, creation is not being paidProperty work on the premise of, certainly can with these embodiments of the invention and its accompanying drawing obtain some other embodiments andAccompanying drawing.
Fig. 1 is structural representation of the invention.
Fig. 2 is cross-sectional view of the invention.
Fig. 3 is the mplifying structure schematic diagram of A in Fig. 2.
Fig. 4 is left housing structural representation of the invention.
Fig. 5 is lock tube structural representation of the invention.
Fig. 6 is bush structure schematic diagram of the invention.
Fig. 7 is stop collar structural representation of the invention.
Fig. 8 is guide groove structure schematic diagram of the invention.
Fig. 9 is push button mechanism structure schematic diagram of the invention.
In figure：1 outer tube, 2 inner tubes, 3 push pawl, 31 round shape portions, 32 elastic claws, 4 housings, 41 left housings, 410 flutings, 42 right sidesShell, 5 lock tubes, 50 stop collars, 501 groups of torsions, 502 "the" shape grooves, 5020 initial slots, 5021 push groove, 5022 lead-over grooves, 5023Release groove, 50230 distal openings, 503 internal channels, 51 bushings, 510 boss, 511 dome rings, 6 gathering sills, 61 gathering sill inner chambers,62 front ends, 63 rear ends, 7 push button mechanisms, 71 thumb buttons, 72 connecting portions, 73 channel bars are fixed before 8, fixed after 9, and 10 are oriented to steel pipe,11 transfusion steel pipes, 12 infusion tubes, 13 female Luers, 14 flush-through connections.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with of the invention realThe accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described implementationExample is only some embodiments of the present application, rather than whole embodiments.Based on specific embodiment described herein, abilityAll other embodiment that domain those of ordinary skill is obtained on the premise of creative work is not made, should all fall at thisWithin the scope of inventive concept.
Referring now to accompanying drawing, the invention will be further described.
Present invention is disclosed a kind of braided blood vessel stent induction system of one-handed performance, as shown in Figures 1 to 9, blood vessel branchFrame induction system includes duct unit and conveying device, and duct unit is connected with conveying device and is driven by conveying device, conduitUnit includes outer tube 1 and the inner tube 2 that is arranged inside outer tube 1, the intravascular stent be positioned between outer tube 1 and inner tube 2 and byInner tube 2 drives, and the conveying device includes a housing 4, and outer tube 1 is connected with housing 4, and the inside of housing 4 sets successively from outside to insideIt is equipped with lock tube 5, gathering sill 6 and push button mechanism 7, lock tube 5 can make axial rotation around gathering sill 6, push button mechanism 7 can be alongGathering sill 6 makees front and rear linear reciprocating motion, gathering sill 6 and lock tube 5 by preceding fix 8 and after fix 9 and be installed on inside housing 4,It is preceding fix 8 and coordinate with the front end 62 of gathering sill 6 install, after fix 9 and coordinate with the rear end 63 of gathering sill 6 and install, the afterbody of housing 4 setsThere are female Luer 13 and a flush-through connection 14, female Luer 13 fixes 9 after being connected to by being oriented to steel pipe 10, and flush-through connection 14 passes throughInfusion tube 13 and transfusion steel pipe 11 fix 8, and flush-through connection 14 and outer tube 1 and the middle cavity phase of inner tube 2 before being connected toIt is logical.
Housing 4 includes left housing 41 and right shell 42, and the side wall of left housing 41 is provided with fluting 410, " 0 ", " 1 " are provided with left housing 41" 2 " totally 3 station location markers, are respectively used to represent zero position, 1 position and 2 positions of lock tube 5.Lock tube 5 is by stop collar 50 and liningSet 51 is constituted, and "the" shape groove 502 is provided with stop collar 50, and the outer surface of stop collar 50 is provided with one group and turns round 501, by stirring torsion501 rotations that can realize stop collar 50, then drive lock tube 5 to rotate, and dial torsion 501 and are limited in the fluting 410 of left housing 41Motion, is provided with an internal channel 503 inside the front end of stop collar 50, the "the" shape groove 502 of stop collar 50 is by initial slot 5020, pushGroove 5021, lead-over groove 5022 and release groove 5023 are constituted, and release groove 5023 also includes its distal openings 50230, lead-over groove 5022Push groove 5021 and release groove 5023 for connecting, push groove 5021 and release groove 5023 length can with it is equal can not also phase, bushing 51 is provided with boss 510 and dome ring 511, the distal openings of boss 510 and the release groove 5023 of stop collar 5050230 coordinate, while dome ring 511 is matched with the internal channel 503 of stop collar 50.Push button mechanism 7 includes thumb button 71, connecting portion72 and channel bar 73, thumb button 71 and connecting portion 72 are connected with channel bar 73 by way of integrated injection molding, and the front end of channel bar 73 opens upSquare opening be connected with inner tube 2, push button mechanism 7 drive inner tube 2 motion, the rear end of channel bar 73 fixed after passing through 9 insertions guidingThe inner chamber of steel pipe 10.When push button mechanism 7 moves, its connecting portion 72 is moved in the inner chamber 6 of gathering sill 6.
Push button mechanism 7 can make front and rear linear reciprocating motion, the "the" shape of stop collar 50 along the inner chamber 61 of gathering sill 6Groove 502 can limit moving forward and backward for push button mechanism 7, when lock tube 5 is in zero position, represent that push button mechanism 7 is in initial bitPut, it is impossible to move, support can not also be moved, when group torsion 501 turns to 1 position, represent that push button mechanism 7 can be in lead-over grooveMoved forward and backward in 5022, when group torsion 501 turns to 2 position, represent that push button mechanism 7 can the motion in release groove 5023.
It is that the movement travel for making push button mechanism in surgical procedure is not limited by braided blood vessel stent length, such as Fig. 3 institutesShow, one is fixedly connected with inner tube 2 is used to discharge the push pawl 3 of intravascular stent, pushes pawl 3 by round shape portion 31 and elastic claw 32Composition, elastic claw 32 is inconsistent with intravascular stent, and inner tube 2 is acted together with push button mechanism 7, when push button mechanism 7 advances, inner tube2 are released forward, push pawl 3 and intravascular stent is released into outer tube 1, and when push button mechanism 7 retreats, inner tube 2 is recalled, and is pushed pawl 3 and is and then moved backReturn, due to elastic claw 32 have elasticity can to contract, intravascular stent does not stress, keep in situ, push button mechanism 7 it is pastMultiple motion, drives inner tube 2 reciprocating so that intravascular stent stagewise is released.
Further to optimize this programme, there is flush-through connection 14 function of check valve, i.e. liquid to pass through the note of flush-through connection 14After entering induction system, liquid cannot flow backwards, and prevent contaminated operation table top.
Present invention further teaches a kind of application method of the braided blood vessel stent induction system of one-handed performance, including following behaviourMake step：
A) preparation process：Vascular puncture, angiography catheter is inserted in point of puncture, then penetrates seal wire so that seal wire reaches focus portionPosition, operative region is entered by the duct unit of induction system along seal wire, now dials torsion in zero position, and support cannot be moved；
B) initial stage release steps：Stir torsion 51 and lock tube is gone into 1 position by zero position, then push ahead push button mechanism 7, it is interiorPipe 2 travels forward under the drive of channel bar 73, promotes push pawl 3 to travel forward, and drives intravascular stent to release outer tube 1；Then returnRemove push button mechanism 7 to retract inner tube 2, because the elastic claw 32 for pushing pawl 3 has elasticity, during inner tube 2 withdraws, elastic claw 32To the effect of support applying power, therefore support can will not will not be moved to contract so that push pawl 3 and return to initial position, soRepeat the advance of push button mechanism 7 and withdraw action, intravascular stent is gradually discharged outer tube 2；
C) complete release steps：When push button mechanism 7 advances in step b, support is no longer pushed out outer tube 1, now stirs torsionLock tube 5 is gone to 2 positions by 51 by 1 position, and push button mechanism comes 7 to release groove 523, and pushing button structure 7, support quilt are then promoted forwardDischarge completely.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.Various modifications to these embodiments will be apparent for those skilled in the art, as defined hereinGeneral Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present inventionThe embodiments shown herein will not be limited to, and be to fit to consistent with principles disclosed herein and features of noveltyScope most wide.