Embodiment
It is described in detail to various aspects of the present invention below in conjunction with the drawings and specific embodiments.Wherein,Part in accompanying drawing is not necessarily drawn to scale, and it focuses on carrying out the principle of the present inventionIllustrate.
In various embodiments of the present invention, well-known structure, material or operation are not shown or notElaborate.Also, described feature, structure or characteristic can be in one or more embodimentsCombine in any way.In addition, it will be appreciated by those skilled in the art that following various embodimentsFor for example, not for limiting the scope of the invention.It can also be readily appreciated that, this paper institutesState can be arranged with the element or part in each embodiment shown in the drawings by a variety of different configurations andDesign.
With reference to Fig. 1, it illustrates one of the intravascular stent induction system according to embodiment of the present invention., can for intravascular stent to be delivered to internal induction system, i.e. intravascular stent induction system in this exampleTo include, but are not limited to：It is the housing that is made up of right half-shell 110 and left shell half 120, cleaning pipe 300, mainThe conduit tube component and drive component 400 to be made up of outer tube 200 and inner tube 800.
Wherein, the outer tube 200 is located at the outside of the housing and passes through adapter piece 600 and three-way pipe500 are connected with the first end 101 of the housing.Specifically, outer tube 200 is inserted and extended to and threeThe first end 501 of siphunculus 500, so that connected with the three-way pipe 500, and adapter piece 600 and the shellBody is fixed, for example, right half-shell 110 and left shell half 120 clamp the adapter piece 600, and passes through nut121 coordinate with connection features 111, and right half-shell 110 and left shell half 120 are fixed.Three-way pipe 500 is used forForward part (i.e. close to the part of outer tube) to intravascular stent induction system is cleaned, and is used as one kindOptional embodiment, can be Rule three-way pipe, it is of course also possible to be that can be used for intravascular stent delivery systemOther suitable three-way pipes of system.As shown in figure 1, three-way pipe 500 is located at the first end 101 of the housing,The three-way pipe 500 can have extend out to the outside of the housing first end 501, in the housing andThe second end 502 for being communicated with the straight line of first end 501 and it is arranged on the end of first end 501 and secondBetween 502 and extend out to the housing outside the 3rd end 503.Wherein, the of the three-way pipe 500One end 501 is connected and connected with outer tube 200 by adapter piece 600.The first end of said inner tube 800The three-way pipe 500 is extended through from the second end 502 of the three-way pipe 500, is stretched out from its first end 501And enter in the outer tube 200.The end at the 3rd end 503 of three-way pipe 500 has opening and envelopeClose the joint cap 522 of the opening.So, in the course of conveying of intravascular stent, the closing of joint cap 522 shouldOpening, is flowed out with preventing humor (i.e. blood) from the opening；After intravascular stent conveying terminates, it can beatJoint cap 522 is opened, cleaning fluid, the progress to the forward part of intravascular stent induction system are added by the openingCleaning.Alternatively, it is convenient to omit three-way pipe 500, for example, for disposable blood pipe holder induction system,Due to using once abandoning, being cleaned without using three-way pipe 500 to it, therefore, such bloodPipe holder induction system can not have three-way pipe 500.
Wherein, the cleaning pipe 300 is used for after intravascular stent conveying terminates to intravascular stent induction systemCleaned.In one embodiment of the invention, cleaning pipe 300 can be integrally formed two-wayPipe, for example, by the integrally formed Rule bipass of PC (makrolon) material, itself and the housingSecond end 102 is connected, and the first end 301 of the cleaning pipe 300 is located at the inside of the housing, theTwo ends 302 extend out to the outside of the housing.In one embodiment of the invention, pipe 300 is cleanedOn be provided with corresponding position in connection features 303,304, the right half-shell 110 of housing be provided with it is describedThe connection features 113,114 that connection features 303,304 coordinate, by the way that connection features 303,304 are embeddingEnter into connection features 113,114, cleaning pipe 300 is fixed with housing, while by by right half-shell 110With left shell half 120 with reference to clamp it is described cleaning pipe 300.In addition, as shown in figure 1, the cleaning pipeThe end at 300 the second end 302 has opening and closes the joint cap 320 of the opening.So, in blood vesselIn the course of conveying of support, joint cap 320 closes the opening, with preventing humor (i.e. blood) from the openingOutflow；After intravascular stent conveying terminates, joint cap 320 can be opened, cleaning fluid is added by the opening,Intravascular stent induction system is cleaned.Alternatively, it is convenient to omit cleaning pipe 300, for example, forDisposable blood pipe holder induction system, due to using once abandoning, without using cleaning pipe 300 to itCleaned, therefore, such intravascular stent induction system can be without cleaning pipe 300.
Wherein, a part for said inner tube 800 is located in the housing.The first end of inner tube 800 is (notShow) inside of the outer tube 200 is stretched to, in this example, inner tube 800 is from three-way pipe 500Second end 502 is inserted through three-way pipe 500 and extend into the inner chamber of outer tube 200.Said inner tubeThe second end can from it is described cleaning pipe 300 first end 301 stretch in the tube chamber of the cleaning pipe 300.
Wherein, a part for the drive component 400 is located in the housing, with said inner tube 800Part operation engagement in the housing, specifically, drive component 400 is main by thumb drivesPart 401 and guide rail 402 are constituted, and drive component 400 is located between the first end of inner tube and the second end, itsIn, the right half-shell 110 of housing is connected by connection features 112,115,116 with drive component 400, spiral shellMother 121 passes through the hole in the left shell half 120 of housing, and through the hole on jump ring 122 and guide rail 402,The screw 111 extending into right half-shell 110, by the engagement of nut 121 and screw 111 by left shell half 120It is combined together with right half-shell 110, so that a part for drive component 400 is contained in housing, andA part for the thumb drives part 401 of drive component 400 is exposed to be manually actuated from housing.It is interiorPipe 800 passes through guide rail 402, and is engaged with a part for thumb drives part 401, when doctor or other operationsWhen person operates thumb drives part 401, under the push-and-pull of thumb drives part 401, inner tube 800 is along guide rail402 movements, and then said inner tube is axially moveable in the inner chamber of the outer tube and cleaning pipe, specificallyFor, the first end of inner tube is relatively moved in outer tube 200, so that intravascular stent is along outer tube200, which advance, simultaneously enters intravascular, afterwards, deployable and be supported on blood vessel.At the same time, inner tubeMoved with moving integrally for inner tube in cleaning pipe 300 at the second end.
In the conduit tube component of embodiment of the present invention, at least a portion of inner tube 800 is located at the overcoatIn pipe 200, as shown in Fig. 2 one end connection conical head (TIP) 1100, the other end of inner tube 800It is connected through inner sleeve 1200, and with inner sleeve 1200.Wherein, TIP first 1100 is located at outer tube200 end, for guiding the conduit tube component to move in the blood vessels.The inner sleeve 1200 is describedKeep said inner tube 800 to be axially moveable in outer tube 200, prevent inner tube 800 in outer tube 200Bend.Hangnail 900 is provided with said inner tube 800, specifically, hangnail 900 is arranged on interiorBetween intravascular stent assembly area on pipe 800, i.e. inner sleeve 1200 and TIP first 1100.The hangnail900 can be made up of the elastomeric material of such as Nitinol etc, and be configured to work as said inner tube 800Intravascular stent can be moved to vascular lesion position when being moved relative to outer tube 200.Specifically,Preceding to push away inner tube 800 when hangnail 900 is in outer tube 200, hangnail 900 captures the inwall of intravascular stentDischarge outward, intravascular stent is moved to vascular lesion position, while hangnail 900 stretches out outer tube 200,Post-tensioning inner tube 800, hangnail 900 is back in outer tube 200, and one section of intravascular stent of crawl is interior againWall releases one section again, and this action is until release completely repeatedly.Thus, inner tube goes for arbitrarily longThe intravascular stent of degree, without in the intravascular stent according to different length or the customization of different vascular lesion positionsPipe, improves the compatibility of intravascular stent induction system, and thus operation is simplified, and reduces bloodThe cost of pipe holder induction system, also reduces the treatment cost of patient certainly.
In embodiments of the present invention, as shown in figure 3, inner tube 800 can include, but are not limited to：GoldBelong to woven tube 801, the metal tube 802 being connected with the metal knitted pipe 801, connecting tube 803.The companyAdapter 803 is enclosed on the junction of the metal tube 802 and the metal knitted pipe 801, the connecting tube803 are glued by binding agent (for example, anaerobic adhesive) and the metal knitted pipe 801 and the metal tube 802Connect.Metal tube 802 connects TIP heads, metal knitted pipe 801 and the connection driving group of said inner tube 800Part (for example, the other metal tube) connection of part 400.In one kind side of being preferable to carry out of the present inventionIn formula, the metal tube 802 can be NiTi pipe, it is preferable that the metal tube 802 and connecting tubeLength direction of the part of 803 connections along the metal tube can have helical cutting (not shown).In metal tube802 it is Nian Jie with connecting tube 803 when, binding agent enter helical cutting in, increase adhesive strength.Simultaneously when interior, can be more preferable by property when pipe 800 enters human body bending lesion.
As shown in figure 3, hangnail 900 is arranged on metal tube 802, and abuts or adjoin with connecting tube 803Connect or connect, it is preferable that the outer surface of hangnail 900 and the outer surface of connecting tube 803 are continuous and smoothedCross.So, it is possible to reduce the numbers of steps on inner tube outer surface, reduce step and behaviour is conveyed to intravascular stentThe adverse effect of work.In one embodiment of the invention, hangnail 900 includes corners 901 and basePortion 902, the radial outward expansion in the axial direction of metal tube 802 from base portion 902 of corners 901, i.e.The line radial expansion centered on the axis of metal tube 802, is configured to two wedge angle straight lines of two corners 902Distance is more than the radial dimension of base portion 902, and the diameter and the diameter phase of connecting tube 803 of base portion 902Deng.Alternatively, hangnail 900 can be made up of the elastomeric material of such as marmem etc, andBy laser welding on the metal tube of inner tube 800, so, the rigidity at hangnail setting is improved, solvedDetermine in the prior art because rigidity is not enough and occurs discounting phenomenon.
In an advantageous embodiment, the metal knitted pipe 801 is three-decker, wherein, describedInternal layer is that PTFE (polytetrafluoroethylene (PTFE)) layer, outer layer are PEBAX (block polyetheramides in three-deckerResin) layer and intermediate layer between the internal layer and outer layer be wire braid, for example notBecome rusty steel braided steel wire net.Wherein, the metal tube 802 is fixedly connected with bag with the metal knitted pipe 801Include：The wire braid of the metal tube 802 and the metal knitted pipe 801 is welded, i.e. Laser WeldingConnect NiTi pipe and wire braid.
In another preferred embodiment of the present invention, it is convenient to omit connecting tube 803, inner tube is compiled by metalKnit pipe and metal tube is constituted.One end of metal tube is connected with metal knitted pipe, and the other end is connected with TIP；One end of metal knitted pipe is connected with metal tube, and the other end passes through inner sleeve.The one end of the metal tubeIt is inserted into the one end of the metal knitted pipe and the metal tube is fixed with the metal knitted pipe and connectedConnect.
It should be noted that above is thought, the embodiment of concept or principle for illustrating the present invention,The invention is not limited in above-described embodiment.Those skilled in the art are according to inventive concept, concept or originalReason can carry out various changes to above-described embodiment, obtain more embodiments.
When being made up for inner tube of metal knitted pipe, NiTi pipe and connecting tube, in the case of control wall thickness, noThe attachment force between conduit parts is influenceed, using ultra-thin-wall connecting tube, inner tube front end is using the super of grindingThin metallic tubd couples, and wall thickness is 0.02mm after grinding, and this is that other polymer plastic expects pipes are not reached.Also, the connected mode used：NiTi pipe is inserted into metal establishment pipe, connecting pipe box are in two pipesEach half, after anaerobic adhesive is coated in the interval inwall bonding of connecting tube firmly, laser welding of nickel titanium tube is compiled with metalTubulation.So, pipe connected pipe wall thickness effectively in control, also, inner tube when pushing repeatedly, it is to avoid platformThe excessive head end for causing connecting tube of rank scrapes support, and influence pushes effect.Gluing combination laser welding, it is doubleInsure again, even if anaerobic adhesive still ensures that the TIP of inner tube by coming off for a long time or rosin joint phenomenon occurHuman body will not be fallen into, malpractice occurs.
In addition, increasing an elastic NiTi hangnail on the metal tube of inner tube carries out reciprocating push, work as hangnailWhen in outer tube, the hangnail crawl rack inner wall of NiTi elasticity discharges support and goes out outer tube to angiosis outwardBecome position, captured again while hangnail stretches out (backing positions are constant) in outer tube, post-tensioning hangnail to outer tubeOne section of rack inner wall releases one section again, and this action is until release completely repeatedly.
Hangnail cuts heat setting process using NiTi, and expansion is pointed at horn mouth, for 6F pipes sheath (i.e. diameterFor 6F outer tube), two wedge angle air line distances are more than 1.35mm.
So, the inner tube that the present invention is designed can be unified to be a kind of specification, release all blood for meeting 6F pipe sheathsPipe holder, solving existing general induction system needs to customize inner tube length according to stent length and diameterThe problem of.Also, the reciprocal small distance of one-handed performance formula is pushed repeatedly, and easy to control, feel is stronger.
The term and wording used in description of the invention is just to for example, be not intended to constitute limitIt is fixed.It will be appreciated by those skilled in the art that before the general principle of disclosed embodiment is not departed fromPut, various change can be carried out to each details in above-mentioned embodiment.Therefore, protection model of the inventionEnclose and only determined by claim, in the claims, unless otherwise indicated, all terms should be by most wideThe general rational meaning is understood.