Summary of the invention
It is an object of the present invention to provide a kind of new solutions for taking bolt rack.
According to the first aspect of the invention, it provides one kind and takes bolt rack.This takes takes bolt rack to be cylindrical in shape described in bolt rackStructure, described to take bolt rack include the multiple grid cells to link together, described that bolt rack is taken to have axial clearance and useIn formed the first of the axial clearance while and when second, described first while and it is described second while be separated from each other, first sideMultiple bulge-structures are formed, second side forms multiple sunk structures corresponding with the structure of the bulge-structure, in instituteState take bolt rack shrink when, the bulge-structure can be inserted into the sunk structure；The entirety of tubular structure shape along longitudinal directionWave linear shape structure is formed along longitudinal direction at variable-diameter structure or the entirety of the tubular structure.
Optionally, described first while and it is described second while be respectively formed dentalation, the tooth of the dentalation on first sidePortion forms the bulge-structure, forms the sunk structure between the adjacent fingers of the dentalation on second side.
Optionally, the dentalation is zigzag dentalation.
Optionally, described first while and it is described second while be respectively formed wave linear shape structure, the wave linear shape on first sideThe wave crest of structure forms the bulge-structure, and the trough of the wave linear shape structure on second side forms the sunk structure.
Optionally, the entirety of the axial clearance is in the shape of a spiral.
Optionally, the entirety of the tubular structure forms variable-diameter structure along longitudinal direction, and the variable-diameter structure is beading shape structure.
Optionally, the entirety of the tubular structure forms variable-diameter structure along longitudinal direction, and the internal diameter of the tubular structure is configuredFor by distally proximally gradually increasing.
Optionally, the shape of the grid cell is round, oval, diamond shape or ring structure.
Optionally, the entirety of the tubular structure forms variable-diameter structure along longitudinal direction, and the internal diameter of the tubular structure is configuredFor from taking the both ends of bolt rack to gradually increase to middle part.
According to another embodiment of the present disclosure, it provides one kind and takes pin device.It includes importing sheath, push that this, which takes pin device,Seal wire and it is above-mentioned take bolt rack, one end of the push seal wire is connect with the proximal end for taking bolt rack, described to take bolt rackIt is compressed and is accommodated in the importing sheath.
According to one embodiment of the disclosure, this takes bolt rack bulge-structure on the first side when shrinking to be inserted into secondIn the sunk structure on side, so as to pierce through thrombus.This to take the binding force of bolt rack and thrombus stronger, and the crawl of thrombus is more firmGu taking the effect of bolt more preferable.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and itsAdvantage will become apparent.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition havingBody explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originallyThe range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present inventionAnd its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitableIn the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, withoutIt is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang YiIt is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
According to one embodiment of the disclosure, provides one kind and take bolt rack 12.As shown in Figure 1, taking bolt rack 12 in cylinderShape structure.Taking bolt rack 12 includes the multiple grid cells to link together.Take bolt rack 12 that there is axial clearance 22 and useIn formed axial clearance 22 first in 23 and second while 24.First side 23 forms multiple bulge-structures 26.Second side 24 is formedMultiple sunk structures 27 corresponding with the structure of bulge-structure 26.First 24 is separated from each other at 23 and second and refers to the first side23 and second side 24 do not formed and be connected to each other.In this way, first the distance between 24 can be according to blood vessel at 23 and secondInternal diameter is adjusted in time.For example, the shape of the bulge-structure 26 and shape of sunk structure 27 matches or sunk structure 27Bulge-structure 26 can be surrounded.Bulge-structure 26 is opposite with the position of sunk structure 27.When taking bolt rack 12 to shrink, bulge-structure26 can be inserted into sunk structure 27.Contraction of the bolt rack 12 in receiving state not is taken here, shrinking, but in extended stateWhen, it takes bolt rack 12 to become smaller with the internal diameter of blood vessel and shrinks.
It as shown in Figure 1, taking bolt rack 12 is open loop structure, and is in cylinder mould shape.The shape of grid cell is round, ovalShape, diamond shape or ring structure.Multiple grid cells can be identical structure, be also possible to different structures.Wherein, differentThe grid cell of structure links together, and can effectively improve the binding force for taking bolt rack 12 Yu thrombus.
Bolt rack 12 is taken to be made by memorizing material, for example, memorial alloy, memory high molecular material etc..This makesTake bolt net amount of crimp can be adjusted according to the size adaptation of vessel diameter, to be bonded with the inner wall of blood vessel.For example,Blood vessel is thinner, then the interlaced part in the both sides of open loop structure is more, to reduce outer diameter；Blood vessel is thicker, then open loop structureThe interlaced part in both sides is fewer, to increase outer diameter.The open loop structure can automatic adjusument diameter, to adjust radial supportPower reduces the damage to blood vessel.
Optionally, memorial alloy includes for Nitinol, nickel cobalt (alloy), ormolu, golden cadmium alloy etc..In the preparation,Firstly, the sheet material of memorial alloy passes through laser ablation, to form the multiple grid cells to link together.The mode of laser ablationGrid cell of various shapes can be formed according to actual needs, and formed precision is high.Then, by the first side 23 and second of materialSide 24 is cylindrical in shape structure towards opposite direction winding.In receiving state, the first 24 overlapping at 23 and second is tiny to be formedClub shaped structure.After removing external force, which can reply original shape state, that is, be extended into tubular structure.
Remembering high molecular material includes polynorbornene, styrene-butadiene copolymer, shape memory polyurethane etc..ExampleSuch as, grid cell is formed by way of injection molding, laser ablation.Above-mentioned material all has good Memorability, can basisThe size of vessel diameter is shunk, is discharged.The size of axial clearance 22 changes with the variation of the internal diameter of blood vessel.
In one example, diameter >=0.06mm of memorizing material.Memorizing material itself has in the size rangeThe function of standby development, i.e., can develop under the ray of setpoint frequency.For example, X-ray.In this way, when in use, operator more holdsEasily observe the position for taking bolt rack.
In one example, the entirety of axial clearance 22 is in the shape of a spiral.The axial clearance 22 of spiral extension makes firstAt 23 and second, 24 length is bigger, can more effectively contact with thrombus.
In addition, helicoidal structure makes first 24 can also play the role of scraping to thrombus at 23 and second, the effect of bolt is takenFruit is more preferable.
According to one embodiment of the disclosure, this takes the bulge-structure 26 on the first side 23 when shrinking of bolt rack 12 that can insertIn the sunk structure 27 for entering the second side 24, so as to pierce through thrombus.This to take bolt rack 12 and the binding force of thrombus stronger, bloodThe crawl of bolt is stronger, takes the effect of bolt more preferable.
In one example, as shown in Figure 1, first 24 is respectively formed dentalation at 23 and second.The tooth on the first side 23The teeth portion of shape structure forms bulge-structure 26.Sunk structure 27 is formed between the adjacent fingers of the dentalation on the second side 24.ToothShape structure enables first 24 to be more effectively interlocked at 23 and second, so that taking puncture of the bolt rack 12 to thrombusDeeper into taking bolt rack 12 and the binding force of thrombus stronger.
For example, dentalation is zigzag dentalation.The a line of the teeth portion of zigzag dentalation is parallel to tubular knotThe circumferential direction of structure, another a line and the side are at an acute angle, and the diapirism of this structure is more preferable.
In one example, first 24 wave linear shape structure is respectively formed at 23 and second.The wave linear shape on the first side 23The wave crest of structure forms bulge-structure 26, and the trough of the wave linear shape structure on the second side 24 forms sunk structure 27.This dentationThe edge of structure is gentler.The contact area of bulge-structure 26 and sunk structure 27 is big, more aobvious for the clamping action of thrombusIt writes.
Certainly, bulge-structure 26 and sunk structure 27 are not limited to the above embodiments.Bulge-structure 26 can also be it is semicircle,The structures such as rectangular improve the binding force for taking bolt rack 12 Yu thrombus as long as thrombus can be pierced through.
In one example, as shown in Fig. 2,8-9, the entirety of tubular structure forms variable-diameter structure along longitudinal direction.With latus rectum knotStructure is compared, and the contact area of the inner wall of variable-diameter structure and blood vessel is smaller, smaller for the injury of blood vessel.
In addition, pull out take bolt rack 12 when, variable-diameter structure take bolt rack 12 for thrombus interception function moreSignificantly, thrombus breaks loose can be effectively prevented.
For example, as shown in Fig. 2, variable-diameter structure is beading shape structure.The profile of the structure is similar to string together multipleOrbicule.Beading shape structure and the contact area of thrombus are bigger, so that taking bolt rack 12 and the binding force of thrombus stronger.
For example, the internal diameter of tubular structure is configured as by distally proximally gradually increasing.Proximal end refers to by proximal operator'sOne end distally refers to one end far from operator.This structure makes the outer surface for taking bolt rack 12 and thrombus and inside allIt can effectively contact.It when taking thrombus, takes the interception function of bolt rack 12 significant, takes bolt effect good.
In one example, as shown in figure 8, the internal diameter of tubular structure is configured as from taking the both ends of bolt rack 12 to middle partIt gradually increases.The overall structure of bolt rack 12 is taken to be similar to spindle.This shape makes the interception for taking bolt rack 12 to thrombusFunction well, and take the running resistance of bolt rack 12 in the blood vessel small, it can be more swimmingly removed when taking bolt.
In one example, as shown in figure 9, the entirety of tubular structure forms wave linear shape structure along longitudinal direction.Wave linear shapeStructure can be latus rectum structure and be also possible to variable-diameter structure.Under conditions of for latus rectum structure, when extraction takes bolt rack 12, waveUnrestrained linear structure can repeatedly rub with thrombus, so that thrombus be made to be detached from blood vessel.In this way, thrombus more effectively can be taken boltRack 12 takes out.
Under conditions of for variable-diameter structure, take bolt rack 12 in addition to can repeatedly rub other than thrombus, additionally it is possible to effectivelyThrombus is intercepted, so as to more thoroughly remove thrombus.
According to another embodiment of the present disclosure, it provides one kind and takes pin device.It includes importing sheath 18, pushing away that this, which takes pin device,It send seal wire 11 and takes bolt rack 12.Take bolt rack 12 as previously described.It pushes one end of seal wire 11 and the proximal end of bolt rack 12 is taken to connectIt connects.Import sheath 18 in tubular construction.It takes bolt rack 12 to be compressed and is accommodated in and import in sheath 18.
For example, the wall portion for importing sheath 18 is double-layer structure, wherein the material of internal layer is polytetrafluoroethylene (PTFE) (PTFE), highly denseHigh molecular materials such as polyethylene (HDPE) are spent, the material of outer layer is nylon elastomer (PEBAX), nylon, polyester resin (PET)Deng.The importing sheath 18 of double-layer structure has higher structural strength.
Push seal wire 11 is used to push and pull-out takes bolt rack 12.Material for making push seal wire 11 includes that NiTi closesThe materials such as gold, stainless steel, flexibility, ductility, the reliability of above-mentioned material are good, still have when being made into filament goodIntensity and flexibility.
This take pin device have the characteristics that bolt is taken to work well, thrombus remove it is thorough.
In one example, as shown in fig. 3 to 7, push seal wire 11 is connect by connection structure 13 with bolt rack 12 is taken.EvenBinding structure 13 includes hook 20 and annular element.Stop part 19 is provided on hook 20.Annular element includes interconnected firstRing 14 and the second ring 15.The internal diameter of first ring 14 is greater than or equal to the outer diameter of stop part 19, and the internal diameter of the second ring 15 is less than backstopThe outer diameter of part 19.For example, stop part 19 is metal, plastics, rubber or silica gel.As long as fixed connect can be formed with hook 20It connects, and hook 20 can be effectively prevented and broken off relations.
It can be, as shown in fig. 6, stop part 19 is spherical shape, elliposoidal etc., outer diameter is spherical diameter or elliposoidalThe length of short axle.
The size for being also possible to 19 only one dimension of stop part is big, and the size of two other dimensions is small.Larger-size dimensionThe size of degree is the size of outer diameter.This is dimensioned such that stop part 19 can not pass through the second ring 15.
In connection, hook 20 initially enters the first ring 14, and since the internal diameter of the first ring 14 is greater than or equal to backstopThe outer diameter of part 19, therefore stop part 19 can pass through the first ring 14.Then hook 20 enters in the second ring 15.Due to the second ring 15Internal diameter is less than the outer diameter of stop part 19, therefore stop part 19 can not pass through the second ring 15, breaks off relations so as to be effectively prevented hook 20.One in hook 20 and annular element connect with push seal wire 11, another connect with bolt rack 12 is taken.
In this example embodiment, connection structure 13 can be effectively formed and be fixedly connected, so that bolt rack 12 will be taken to lead with pushSilk 11 links together.
In one example, as shown in figure 4, forming channel 17 between the first ring 14 and the second ring 15.The width in channel 17Degree is less than the diameter of hook 20.The diameter of hook 20 refers to the diameter of the wire rod of production hook 20.Since the width in channel 17 is smallIn the diameter of hook 20, therefore channel 17 can effectively prevent hook 20 from entering the first ring 14 from the second ring 15.Hook 20 can quiltIt is limited in the second ring 15, breaks off relations to be effectively prevented hook 20.
In another example, as shown in figure 5, the first ring 14 and the intersection of the second ring 15.It is formed and is closed up in the position of intersectionPortion 16.The width in closing in portion 16 is less than the diameter of hook 20.This setup, closing in portion 16 equally can effectively prevent to hangHook 20 enters the first ring 14 from the second ring 15.
In addition, the processing of this annular element is simpler, and volume is smaller relative to channel 17 is formed.
There are many generation types of stop part 19.For example, forming stop part 19 on hook 20 by laser welding.BackstopPart 19 is the weldering pearl of solidification.
It is also possible that stop part 19 is formed on hook 20 by way of injection molding.Stop part 19 be spherical plastic part,Rubber parts or silica gel part.
In one example, protection pipe is arranged with outside connection structure 13.Protection pipe limit hook 20 and annular element itBetween activity, make to take bolt rack 12 to keep the posture of setting when taking out, prevent local swing.
In addition, protection pipe can be effectively protected hook 20 and annular element, and prevent connection structure 13 from scratching blood vessel.
Preferably, injection molding is formed with filler material in protection pipe.Protection pipe can be effectively protected connection structure 13.ExampleSuch as, the material of protection pipe is metal, plastics, ceramics etc..The inside of protection pipe forms circular hole, square hole, flat hole etc..Filler material isThe high molecular materials such as plastics, rubber or silica gel.The mode of injection molding can make filler material effectively fill up the gap in protection pipe.Filler material can effectively prevent hook 20 mobile, this push for take bolt rack 12 and extraction are more acurrate.
In addition, filler material can more effectively prevent hook 20 from entering the first ring 14 from the second ring 15.
In one example, hook at least one of 20 and annular element are made by developing material.Developing material isThe material that can develop under radiation exposure (for example, X-ray).This setup, so that operator, which is more easily observed, takes boltThe position of rack 12.For example, developing material includes at least one of platinum, tungsten, bismuth and barium metal material or above-mentioned at least twoThe alloy material of kind metal material, or the high molecular material added with above-mentioned at least one element.
In one example, as shown in figure 8, taking the distal end of bolt rack 12 to be provided with developing material 25.Developing material 25As previously described.This setup makes operator be easier to observe the position for taking bolt rack 12.
In one example, as shown in fig. 7, the apex in hook 20 is provided with outside bending part 21.In hook 20Bending part 21 can play the role of limit when into the second ring 15.The part of second ring 15 is caught in bending part 21, this makesHook 20 is more acurrate with the relative position of annular element.
Although some specific embodiments of the invention are described in detail by example, the skill of this fieldArt personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this fieldArt personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hairBright range is defined by the following claims.