CN205831970U

CN205831970U - Have a ring-type lock can tie bracket induction system again

Info

Publication number: CN205831970U
Application number: CN201620090692.8U
Authority: CN
Inventors: T.莫克; C.莱斯; W.凯莉; E.比勒菲尔德; A.库马
Original assignee: Flexible Stenting Solutions Inc
Current assignee: Flexible Stenting Solutions Inc
Priority date: 2015-01-31
Filing date: 2016-01-29
Publication date: 2016-12-28
Anticipated expiration: 2026-01-29
Also published as: WO2016123503A1; CN205964238U; CN105832452A; CN105832451A; WO2016123509A1; CN105832453A; TW201630574A; CN205729576U; TW201630573A; TW201632154A; WO2016123540A1

Abstract

What this utility model related to having ring-type lock can tie bracket induction system again.Device, system and method are described and relate to arranging and tie bracket again.The first and second elongated tubular member that intraluminal device axially moves with respect to housing, there is ring-type lock, it is configured to fix expansible intracavitary unit in a mode of operation and discharge intracavitary unit in another mode of operation, and intracavitary unit is disposed coaxially in the second elongated tubular member at the nearside of distally stop.First and second tubular elements can be extracted or make it to advance by the actuator on housing.Extract the first tubular element arrange support and make the first tubular element advance with tie bracket again.Before constraint again, the second tubular element is extracted so that distally stop closes with ring-type interlocking.This device can have direction controlling part, and it is engaged only to allow the first elongated tubular member relative to the proximal motion of housing and the distal motion that only allows the first elongated tubular member when being disengaged by actuator.

Description

Have a ring-type lock can tie bracket induction system again

Cross-Reference to Related Applications

According to 35 USC § 119 or Paris Conventions, this application claims the US provisional patent submitted on January 31st, 2015 Application No.62/110,627(lawyer's Reference Number FSS5013USPSP) and the U.S. Provisional Patent Application of submission on July 27th, 2015 No.62/197,515(lawyer's Reference Number FSS5014USPSP) priority, the full content of these temporary patent applications is with reference Mode be incorporated herein, as all illustrated in this article.

Technical field

It relates to the field of medical treatment device, and more particularly relate to controllably arrange support and retrain again The medical treatment device of support that local is arranged or induction system and method.In some applications, it relates to be used for conveying at body The system of the self-expanding pipe intracavity implant (" support ") used in body passage or pipe, it is particularly with repairing due to disease Narrow or the blood vessel of obturation is useful.

Background technology

At medical domain, it is similar that intraluminal prosthesis is widely used for other of implantable intravascular, bile duct or organism Lumen.These prostheses are commonly referred to as support, and are used for keeping, opening or expand tubular structure.By Palmaz in 1985 The United States Patent (USP) 4 that November 7 submitted to, gives an example of conventional support in 733,665, the full content of this patent is with ginseng The mode examined is incorporated herein.This support is usually referred to as balloon expandable stent.Generally, this support is by stainless solid Pipe is made.Afterwards, the wall of support is produced a series of cutting.Support has the first small diameter, and it allows by inciting somebody to action Support pressure is held on foley's tube through human vasculature's transfer gantry.Inside tubular element, footpath is applied at foley's tube When outward extending power, support also has second, the diameter of expansion.

But, for the use in some vasculars (such as carotid artery or femoral artery,superficial), this support may often be such that unrealistic 's.Carotid artery easily from the outside entrance of human body, and usually can be seen by observing at the cervical region of a people.At him Or the patient placing the balloon expandable stent being made up of rustless steel etc. in her carotid artery be likely to be due to activity day by day and It is easily subject to major injury.Act on the sufficiently large power (such as owing to decline) of patient's cervical region to may result in support and subside thus lead Cause the damage to patient.In order to prevent this from occurring and for other shortcoming overcoming balloon expandable stent, develop Self-expanding support.The action as spring of self-expanding support, and after being extruded, be restored to their expansion or plant Enter structure.

United States Patent (USP) 4,665, discloses a type of self-expanding support in 771, this support has radial and axial Flexible elastic tubular main body, has predetermined diameter, and this diameter when the end of main body relative to each other axially moves is Variable, and this support is respectively rigidity but flexible elastic filament element is formed, these filament elements by multiple Limit the helical structure of radially self expandable.In the art, the support of this type is referred to as " Weaving type support " and at this So appellation in literary composition.

Other type of self-expanding support uses alloy, and such as Nitinol (Nitinol), this alloy is being designed to Insert in the medical treatment device of patient body and there is shape memory and/or super elastic characteristics.Shape memory characteristic makes these device energy Enough deform consequently facilitating be inserted in body cavity or chamber, in health, be then heated such that this device returns to it " memory " shape.On the other hand, super elastic characteristics generally enable metal deform and be restrained to deformation state thus just In the medical treatment device accommodating this metal is inserted patient body, this deformation causes phase transformation.Once in body cavity, then can remove Constraint to super-elasticity component, thus reduces its interior stress so that super-elasticity component can be by being converted to original phase and extensive Arrive the not deformed shape of its original again or close to it (because the shape implanted is designed to have some deformation, in order to provide Power supports opens its implanted blood vessel).

The alloy with shape memory/super elastic characteristics is generally of at least two phase.These phases are martensitic phase and Austria Family name's body phase, martensitic phase has relatively low tensile strength and is stable under relatively lower temp, and austenite phase has Of a relatively high tensile strength and higher than being stable at a temperature of martensitic phase.

When stress is applied to the sample showing the metal (such as Nitinol) of super elastic characteristics, this sample is in a temperature Degree, austenite is stable (that is, the temperature that martensitic phase completes to the transformation of austenite phase) when higher than this temperature, this sample Elastic deformation occurring until it reaches specific stress level, at this stress level, then alloy experiences from austenite phase to horse The stress-induced phase transformation of family name's body phase.When phase transformation is carried out, alloy experience significantly strains increase, but have little or no accordingly Stress increase.Strain increases and stress keeps substantially constant, until austenite phase completes to the transformation of martensitic phase.Afterwards, Increasing further for causing deforming further of stress is required.First martensite metal is sent out when applying additional stress Then raw elastic deformation has the plastic deformation of permanent residual deformation.

If the load that will act on sample before any permanent deformation occurs removes, then martensite sample is by elasticity Ground recovers and changes back to austenite phase.The reduction of stress first results in the reduction of strain.When the reduction of stress reaches geneva When phase transformation returns to the level of austenite phase, stress level in sample will keep substantially constant (but considerably smaller than Ovshinsky Body is converted to the constant stress level of martensite) until complete to the transformation of austenite phase, i.e. there is significant strain recovery but The most insignificant corresponding stress reduces.After changing back to austenite and completing, the reduction of further stress causes elasticity Strain reduces.Under the stress of relative constancy, significantly strain is caused and when removing load from deformation when applying load This ability recovered is commonly called superelastic or pseudoelastic.This character just because of material makes it can be used for manufacturing Pipe is cut from expanding support.Prior art is mentioned and the metal alloy with super elastic characteristics is used for intention is inserted into patient The medical treatment device in health or otherwise used in patient body.See for example United States Patent (USP) No.4,665,905 (Jervis) and United States Patent (USP) No.4,925,445(Sakamoto et al.).

The conventional conveying systems being currently used for self-expanding support is so-called " fixing and pulling (pin and pull) " System.The following is an example of " fixing and pulling " system.This induction system includes oversheath, and this oversheath is to have far-end With near-end and the elongated tubular member of lumen therethrough.Typical oversheath be by outer polymeric layer, interpolymer layer with And made by the braiding enhancement Layer between internal layer and outer layer.Enhancement Layer is than internal layer and outer layer more rigidity." fixing and drawing Drag " in system, this oversheath " is pulled " just." fixing and pulling " system also includes being coaxially located in oversheath Interior axle.This axle has at the distally extending far-end of the far-end of sheath and the near-end that extends at the near-end proximad of sheath.? In " fixing and pulling " system, this axle is " fixed " just.

" fixing and pulling " system also has for limiting the self-expanding support structure relative to the proximal motion of axle, Such as it is fixedly attached to interior axle thus serves as the ring of motionless nearside stop, during arranging, regain sheath at proximad Time the support held of pressure can be loaded in a proximal direction against this ring.It is somebody's turn to do " support is spacing " structure and is positioned at the nearside of sheath distal end. The interior diameter that the size on the tapered distal top being positioned at the end of axle can be configured to oversheath contacts, and this distally Top is alternatively referred to as nose cone or dilator.

Finally, " fixing and pulling " system includes the self-expanding support being positioned at sheath.This support is being easy to conveying It reduces under diametric state the interior diameter generation CONTACT WITH FRICTION with oversheath, and the more specifically interior diameter with the internal layer of oversheath is sent out Raw CONTACT WITH FRICTION.Support is between position limiting structure and the far-end of sheath, and a part for axle is disposed coaxially the chamber of support In pipe.(owing to support is straight with in sheath when being removed when sheath during arranging and make support move together with this sheath CONTACT WITH FRICTION between footpath), support contacts with position limiting structure.When the near-end of support contacts with position limiting structure mount proximal end to Proximal movement is prevented from, and position limiting structure offer acts on the counteracting force of support, and this counteracting force and sheath act on and prop up Frictional force on frame is equal and contrary.

In order to arrange support, by System guides to treatment position from " fixing and pulling " system.Then, operator's (medical science Professional) with a hands, the interior axle that the near-end proximad at oversheath extends is fixed on patient.This action secures Interior axle is along the position of the longitudinal axis of the patient's lumen implanting support.This action is in " fixing and pulling " system " fixing " Step.Doctor with his or her another hands proximad pull oversheath (by a part for oversheath from patient towards " Gu Fixed " pull out) thus do not retrain, expose and arrange support.This action is " pulling " step in " fixing and pulling " system Suddenly.

The early stage example of another kind of " fixing and pulling " system is the United States Patent (USP) 4,580 submitted to such as on April 8th, 1986, Gianturco stent delivery system described in 568.In the induction system of this prior art, oversheath is single material The pipe of material, this pipe does not have reinforcement structure within it.Have and push away no better than the cylindrical flush end of the diameter of sheath interior diameter Send device to be inserted in sheath to be positioned at after support.Then, pusher or interior axle is utilized to be pushed to protect from the near-end of sheath by support The far-end of set.Support is completed to expose support by being fixed relative to patient body by interior axle and being withdrawn on sheath Arranging, this stent-expansion when removing radial constraint, such as United States Patent (USP) 4, shown in Fig. 4 and Fig. 5 of 580,568, this patent Content be incorporated by reference herein.

Early stage self-expanding support on another kind of market is Wallstent.This support is braiding, and at it by cloth Change length (shortening) and diameter (increasing) when putting, and the change of its length is obvious.The U.S. authorizing Wallsten is special Profit 4,655,771(is hereinafter referred to as " Wallsten ") describe several induction system for Weaving type support, this patent In be referred to as " tubular body ".Figure 11 of Wallsten shows in these induction systems, its be described below " Figure 11 shows another embodiment of assembly for making tubular body expand.This assembly constitutes flexible apparatus, should Then apparatus makes this tubular body for the tubular body being in contraction state is imported when positioning within it in such as blood vessel Expansion.The each several part of apparatus by flexible outer tube 61 and coaxial, be also that flexible inner tube 62 forms.At outer tube one End, is disposed with control member 63.Another control member 64 is attached to the free end of inner tube 62.So, inner tube 62 can be relative to Outer tube 61 axially displacement.The other end in inner tube 62 is attached with piston 65, and this piston 65 is when in motion along the inwall of outer tube 61 Advance.When apparatus is by time to be used, first the tubular expandable main body 69 being in contraction state is placed in pipe 61, with The inner tube 62 of piston 65 is positioned in the rear portion 66 of outer tube 61.In fig. 11, the original position of piston 65 is to be represented by dashed line 67 Place.So, in original position, the tubular body 69 that a part for pipe 61 is retracted is filled.During implanting, pliable by device Bent tube inserts the position for implantation of blood vessel.Then, make component 64 move upward in the side of arrow 68, the master that will shrink Body 69 is released through the end 70 of pipe 61, makes the part expansion leaving tube end 70 of tubular body 69 until expanding position at it Put 71 its interior bonds with blood vessel wall 72.For the sake of simplicity, in fig. 11 tubular body 69 and 71 is illustrated as two bendings The line of shape.For the main body 21 of expansion engages with blood vessel wall 72, by making component 63 move upward in the side of arrow 73 Tube end 70 is made to move.By one end of piston 65 backup main body 60, and the main body 69 of contraction is made to move.Therefore, component is passed through Rightabout motion while 64 and 63 and implant, the displacement of component 64 is more than the displacement of component 63 ".

Such as the induction system for Gianturco support, the sheath of Wallsten induction system is not reinforced, but single The pipe of one material, and in it, axle does not extends across support, but terminate at support near being constrained on oversheath far-end End.Interior axle and oversheath are coaxial, and have outside the interior diameter holding support more than swedged " constrained " or pressure Diameter.

When self-expanding support is constrained so that its cloth of being converted in the lumen of patient's vascular of structure of conveying from it During the expansion state put, total length can reduce owing to being referred to as shortening the effect of (foreshortening).The contracting occurred Design that short amount depends on support and the amount of radial dilatation experienced during arranging.The precise geometrical shape of patient's vascular Shape is not likely to be known and can suffer from change and scrambling, vascular calcified including in various degree.Shorten percentage ratio (that is, when arranging, support is intended to the mark having with nominal placement diameter to be generally defined as delivery conduit loading condition (pressure is held) Note diameter, i.e. " 10 mm support " has the nominal placement diameter of 10 mm) between the change of stent length divided by delivery conduit Stent length during loading condition (pressure is held), then it is multiplied by 100.Some self-expanding supports are designed to shorten support be restricted to Unconspicuous amount (such as, less than 10%).But, due to design, arrange environment and other factors, self-expanding support can shorten Reach significantly amount (such as, more than 10%).

When being significantly shorter, by its in body cavity or chamber (such as vascular, tremulous pulse, vein or conduit) of rack arrangement Expection axial location can be more difficult.Shorten effect and can show the far-end of support, when support in proximal end arrangement in body cavity or chamber In (such as when the distal dilation of support and engage with inner vessel wall or two kinds of situations) time support far-end can proximal motion. Owing to shortening these motions caused, support can be made to shift from its desired location, thus cause being arranged in mistake or be not Optimal position.

Self-expanding rack arrangement may not be solved in unexpected position the disease being treated, such as when support not When covering the total length of the diseased part of vascular or do not build bridge in aneurysm.The general categories used in such cases can Including the position that another support is placed on overlap.But, which increase length and the difficulty of operation.Additionally, be arranged in non- Desired location may be such as by hindering the connection with another vascular to affect the anatomical structure of vascular system undesirably.Cause This, it is desirable to another support is reorientated rather than arranged to the support misplacing position.

For the ease of making support reorientate, exist some technology for before fully arranging support by support the most about Bundle is in the oversheath of induction system, and the near-end of support is stayed in oversheath.Can be by making oversheath to far on support Slideslip and it is radially collapsed back to its pressure hold diameter, and tie bracket again.In order to resist owing to making sheath at support The upper produced sheath of friction when advancing acts on the axial force on support, the near-end of tie bracket can make it can not be relative to Sheath and inner member distal motion.The design of some induction systems provides the near-end for tie bracket to make it distad not transport Dynamic feature, see for example the commonly assigned U.S. Patent Application Serial Number 12/ of the CO-PENDING that on October 5th, 2009 submits to 573,527(lawyer's Reference Number FSS5004USNP) and serial number 13/494,567(lawyer's Reference Number of submission on June 12nd, 2012 FSS5004USCIP), the two patent application is incorporated by reference herein, and european patent application No.0696442 A2 and the open No.2007/0233224 A1 of United States Patent (USP).One less than optimal performance of existing apparatus is when slender conduit structure Part 14 be pulled back to (that is, proximad) towards operator in case arrange support time, need accept for support ring-type lock construction element with Relaxing between near-end limit component.

Utility model content

Therefore, we have recognized that desirably to provide for the user in this area and are easy to retrain local layout support again Thus allow self-expanding stent delivery system and the method reorientated.Similarly, it is desirable to provide oneself of compensation support shortening Expanding stent delivery system and method.The technology of the disclosure as described by following data meets these and other mesh 's.

It relates to a kind of intraluminal device, this device has: housing；Extend from housing and can do relative to housing First elongated tubular member of axially-movable；The second elongated tubular product extended from housing and can axially move relative to housing Component, the second elongated tubular member has far-end, and far-end is with radially projecting distally stop, wherein, the second elongated tubular product Component is disposed coaxially in the first elongated tubular member；With ring-type lock, Cheng Yi mode of operation of ring-type Lock structure is consolidated Determining expansible intracavitary unit and discharge intracavitary unit in another mode of operation, intracavitary unit is, wherein, ring-type lock is by coaxially Be arranged in the second elongated tubular member and be disposed coaxially in the first elongated tubular member, and wherein, ring-type Lockset has the interior diameter of the effective overall diameter less than distally stop.

In one aspect, this device may additionally include the first actuating being connected to the first elongated tubular member on housing Device, this first actuator is configured to when being manipulated by make the first elongated tubular member axially move relative to housing.This is first years old Actuator may be configured to make the first elongated tubular member be axially movable until the far-end of the first elongated tubular member is relative to ring Shape lock is positioned at nearside.First actuator can be knob, and the rotation of this knob makes the first elongated tubular member relative to shell Body is axially movable.Knob and the first elongated tubular member can be connected to flexible ring component.Housing also can have and is connected to flexibility 3rd actuator of ring element.

In one aspect, housing can have the second actuator, the second actuator be connected to the second elongated tubular member thus Make the second elongated tubular member be axially movable relative to housing when being manipulated by.This second actuator can have relative to housing Primary importance and from the travel range of primary importance, this primary importance is corresponding to predetermined relative to housing of distally stop Distal position, this travel range makes distally stop be axially movable relative to predetermined distal position proximad.Implement at some In example, the second actuator can be sliding part.First actuator also can couple with direction controlling part, when being in the first position Two actuators engage direction control pieces so that direction control piece only allow the first elongated tubular member do relative to housing to Proximal movement.When moving across travel range from primary importance, the second actuator can be disengaged with direction controlling part so that Direction controlling part only allows the first elongated tubular member to do relative to housing distal motion.Direction controlling part can be ratchet and Detent mechanism.Sensible second actuator of removable lid can be passed through.

In one aspect, described device may additionally include that to be arranged on first relative to the fixing distal position of housing elongated Nearside stop in tubular element, wherein, ring-type lock can be in the distally of nearside stop.

In one aspect, the first actuator can provide mechanical advantage so that the first elongated tubular member is relative to housing Corresponding axially-movable is smaller than input motion.

In one aspect, ring-type lock can have multiple depression, and these depressions are configured to capture the unit of expansible intracavitary unit Part.

In one aspect, friction actuator can be disposed coaxially in the first elongated tubular member in the distally of housing.

In one aspect, described device can have and is disposed coaxially in the second elongated tubular member and extends from housing Through the interior elongated tubular member of distally stop, this interior elongated tubular member has lumen and the nearside of lumen fluid communication Port and having and the distal part of multiple eyelets of lumen fluid communication.Described device also can have the top, distally of taper End, this distal top has multiple groove, and these grooves are configured to when distal top adjoins the far-end of the first elongated tubular member Time allow the outflow of fluid of supply from the eyelet of interior elongated tubular member.

The disclosure also include one can tie bracket induction system again, this system has: housing；From housing extend and can The first elongated tubular member axially moved relative to housing；Extend from housing and can axially move relative to housing Second elongated tubular member, the second elongated tubular member has far-end, and far-end is with radially projecting distally stop, wherein, Second elongated tubular member can be disposed coaxially in the first elongated tubular member；Ring-type lock, ring-type lock is coaxially disposed In the second elongated tubular member and be disposed coaxially in the first elongated tubular member, wherein, ring-type lockset is smaller than The interior diameter of effective overall diameter of distally stop；And support, support be fixed in a mode of operation ring-type lock and The diameter reduced it is restrained in the distal part of the first elongated tubular member.

The disclosure also includes a kind of method for arranging and retrain expansible intracavitary unit again.The method comprises the steps that and carries For intraluminal device, this device has: housing；The first elongated tubular member extended from housing；It is disposed coaxially first The second elongated tubular member extended in elongated tubular member and from housing, the far-end in the second elongated tubular member has radially Prominent distally stop；And fix the ring-type lock of expansible intracavitary unit releasedly, wherein, ring-type lock can be by coaxially It is arranged in the second elongated tubular member and can be disposed coaxially in the first elongated tubular member, and wherein, ring-type Lockset has the interior diameter of the effective overall diameter being smaller than distally stop；Remotely located at patient's vascular system by intraluminal device Desired locations in system；And make the first elongated tubular member be axially movable relative to housing proximad can to make expansible The part exposure of intracavitary unit.

In one aspect, make the first elongated tubular member be axially movable relative to housing proximad can include handling at shell The first actuator being connected to the first elongated tubular member on body.

In one aspect, make the first elongated tubular member be axially movable relative to housing proximad can include handling at shell The sliding part being connected to flexible ring component on body.

In one aspect, the second actuator being connected to the second elongated tubular member on housing can be handled so that Two elongated tubular member are axially movable relative to housing proximad until distally stop closes with ring-type interlocking.Then, can make First elongated tubular member is relative to housing distal motion thus retrains expansible intracavitary unit again.Make the first elongated tubular product Component can exert a force to the second actuator while being distad axially movable, to keep distally stop and ring-type interlocking Close.

In one aspect, handle the second actuator can make the second actuator from primary importance relative to housing move through from The travel range of primary importance, this primary importance corresponds to the distally stop predetermined distal position relative to housing, and makes Distally stop is axially movable to close with ring-type interlocking relative to predetermined distal position proximad.Intraluminal device can the side of having It is associated to control piece, direction control piece and the first actuator so that the second actuator and direction when being in the first position Control piece engages so that direction controlling part only allows first elongated tubular member proximal motion relative to housing.Correspondingly, Second actuator can be disengaged with direction controlling part so that direction controlling part only allows the first elongated tubular member relative to shell The distal motion of body.Make the second actuator return to primary importance to make direction of engagement control piece thus only allow first elongated Tubular element is relative to the proximal motion of housing.Sensible second actuator can include removing and is arranged on the second actuator Lid, thus the second actuator is visible when removing lid.

In one aspect, when making the first elongated tubular member distad be axially movable relative to housing, can handle The distally of housing is disposed coaxially the friction actuator in the first elongated tubular member.

In one aspect, intraluminal device can have and is disposed coaxially in the second elongated tubular member and prolongs from housing Extending through the interior elongated tubular member of distally stop, wherein, interior elongated tubular member includes what lumen and lumen were in fluid communication Proximal port and having and the distal part of multiple eyelets of lumen fluid communication.By intraluminal device remotely located Before desired locations, to proximal port by rinsing fluid supply thus can cause rinsing fluid and flow from eyelet.Intraluminal device Can have the tapered distal top with multiple grooves so that flushing fluid supply to proximal port is caused rinses fluid and is transmitted Through the eyelet of the 3rd elongated tubular member and when distal top adjoins the far-end of the first elongated tubular member from groove stream Go out.

Accompanying drawing explanation

Further feature and advantage are by from disclosure preferred embodiment as shown in the accompanying drawings in greater detail below Illustrating to become obvious, in the accompanying drawings, throughout all views, identical reference generally refers to identical parts or element, and And wherein:

Fig. 1 show according to embodiment be in initial construction can tie bracket induction system again；

Fig. 2 show according to embodiment there is the support arranged local can tie bracket induction system again；

Fig. 3 show according to embodiment be ready for retraining again can tie bracket induction system again；

Fig. 4 show according to embodiment during constraint again can tie bracket induction system again；

Fig. 5 show according to embodiment after constraint again can tie bracket induction system again；

Fig. 6 show according to embodiment return to arrange structure can tie bracket induction system again；

Fig. 7 show according to embodiment can the interior views of the housing of tie bracket induction system again；

Fig. 8 A show according to embodiment can the actuator component of tie bracket induction system again；

Fig. 8 B shows the alternate embodiment of the actuator of system shown in Fig. 8 A；

Fig. 8 C shows the perspective view of the associated components of the actuator in Fig. 8 B；

Fig. 8 D shows the decomposition diagram of the parts of the near-end being positioned at handle；

Fig. 9 show according to embodiment can the Direction Control Unit of tie bracket induction system again；

Figure 10 show according to embodiment be in rack arrangement structure can again tie bracket induction system direction control Assembly processed；

Figure 11 show according to embodiment be in that support retrains structure again can the direction of tie bracket induction system again Control assembly；

Figure 12 show according to another embodiment can tie bracket induction system again；

Figure 13 show according to embodiment there is nearside stop can tie bracket induction system again；

Figure 14 A show according to embodiment have that single port rinses can tie bracket induction system again；

Figure 14 B shows the perspective view of the downside of the inner surface of removable lid；

Figure 15 show according to embodiment have that single port rinses can the end-view of tie bracket induction system again；

Figure 16 shows the self-expanding support being in constrained structure according to embodiment；And

Figure 17 shows and arranges, according to being in of embodiment, the self-expanding support constructed.

Detailed description of the invention

Starting, it should be understood that the disclosure is not limited to the material of particular instantiation, framework, routine, method Or structure, because these can change.Therefore, although this Class Options multiple (similar or identical to described herein that May be used for a bit) enforcement or the embodiment of the disclosure, but there is described herein preferred material and method.

It should also be understood that term used herein is intended merely to describe the mesh of the specific embodiment of the disclosure , and it is restrictive for being not intended to.

The detailed description stated below in conjunction with the accompanying drawings is intended that the description as exemplary embodiment of this disclosure, and It is not intended to represent the only exemplary embodiment that can implement the disclosure.Term " the example used throughout this specification Property " refer to " serving as example, example or illustration ", and need not be understood as that than other exemplary embodiment more preferably or Advantageously.Detailed description includes detail, for providing the mesh of the detailed understanding of the exemplary embodiment to this specification 's.People in the art will be understood that the exemplary embodiment of this specification can not have the situation of these details Lower enforcement.In some cases, it is thus well known that construction and device is to illustrate in block diagram form, in order to avoid making herein to The novelty of the exemplary embodiment gone out becomes indigestion.

Only for convenient and clearly purpose, directional terminology can be used about accompanying drawing, such as top, bottom, left and right, Upper and lower, up, above, in lower section, below, later, overleaf with above.These and similar directivity art Language is not construed as limiting by any way the scope of the present disclosure.

Unless otherwise prescribed, whole technology used herein and scientific terminology have and the skill of disclosure art The identical implication that art personnel are generally understood.

As used in this article, term " expansible intracavitary unit " not only includes to be expanded by another device (such as sacculus) Device, and include can in the case of without another device can self expandable to be expanded to the dress of its operative configuration Put.Finally, as used in the present specification and in the appended claims, singulative " ", " one " and " being somebody's turn to do " include plural number institute Refer to object, unless context refers else clearly.

Interior diameter at self-expanding support with elongated tubular member is in the stent delivery system of CONTACT WITH FRICTION and (such as wraps Include those stent delivery systems of the self-expanding support being made up of Nitinol) in, friction can be at a relatively high.Do not using Antagonism is in the case of the nearside stop or some other mechanisms of the proximal force of support, by outer elongated tubular member to closely Side is extracted and possibly cannot successfully be exposed and thus discharge support.On the contrary, available tubular element proximad pulls support.Therefore, Most self-expanding stent delivery system has the structure of so-called nearside stop, puts down when making outer tubular member proximad Move this nearside stop during to expose and to arrange support and apply equal and contrary power to the near-end of support.Depend on setting of support Meter, this can load support against stop by spring, and far-end can be to far when far-end is no longer influenced by the constraint of outer tubular member Side is ejected.This motion can cause support to be arranged longitudinally at by the axis along vascular being different from together with the shortening of support during expansion The position of desired locations.When determining the support arranged local and being in less than optimal position, in order to solve these and its Its situation, the technology of the disclosure provides one stent delivery system, and it has the support of constraint local layout again thus will prop up Frame is repositioned to be arranged in the ability of more desirable position.

Constraint includes making outer tubular member distally advance again so that it slides and compand on the support of expansion Support, until the total length of support suffers restraints and no longer contacts with blood vessel wall.When returning to this structure, can not draw Stretch or in the case of the danger of otherwise injured blood vessel, support reorientated.Therefore, the support delivery system of the disclosure System can include nearside stop, offsets edge and outer tubular structure to be put on the near-end of support by counteracting force distad The proximal friction power of overall diameter of the support of part contact thus allow to extract tubular element thus during arranging, expose support.With This simultaneously, the stent delivery system of the disclosure can have far-end position limiting structure, to apply the active force of proximad, is retraining the phase again Between, the active force of this proximad is offset and the rubbing of distad acting on of making tubular element advance on the overall diameter of support to be associated Wiping power.

It is not provided that when making tubular element distally advance enough counteracting forces can have less desirable consequence.Example As, the far-end at the after-poppet arranged partly can contact with blood vessel wall so that when making one of the support at small diameter When the individual the most motionless expansion diameter far-end being partially toward support is advanced, due to the friction of outer tubular member caused The distal motion of frame may result in the part reversion in the distally in close proximity to constraint tubulose member distal end of support and enters (locally Ground) part discharged of support arranged.As another example, the expansion of the support contacted with blood vessel wall can be to far Slideslip, thus cause wound.In the art, it is known that system is for providing the anti-work of suitable proximad applied as described above Structure firmly.But, the support showing substantially shortening can have the increase of significant length when retraining again.Therefore, when with When compensating the mode tie bracket again that this length increases, the technology of the disclosure provides the retroaction of the nearside orientation acting on support Power.

A kind of tie bracket induction system embodiment can include intraluminal device 10 as shown in Figure 1 schematically again, and And could generally have: the housing 12 that extends along longitudinal axes L-L, extend from housing 12 and axially fortune can be done relative to housing 12 The first dynamic elongated tubular member 14(its be also referred to as sheath or external member) and also extend from housing 12 and can be relative In the second elongated tubular member 16 that housing 14 axially moves.First elongated tubular member 14 can have any suitable knot Structure, such as extruded polymer and the composite construction of encapsulated enhancement Layer (such as metal braid) in the polymer, such as ability Field technique personnel understood.Second elongated tubular member 16 is disposed coaxially in the first elongated tubular member 14.Housing 12 carry multiple actuators, these actuators operable thus realize the first elongated tubular member 14 and the second elongated tubular member 16 relative to the motion of housing 12.

As shown in FIG., the first actuator is configured to knob 18.Such as, knob 18 can be by dialling that short cylinder is formed Wheel, this thumb wheel can have embossing or veined overall diameter to assist to pass power from operator in the case of nonslipping It is delivered to thumb wheel.Depend on the direction making knob 18 rotate, the first elongated tubular member 14 can be made to advance relative to housing 12 or Exit.In this embodiment, the second actuator is configured to sliding part 20(such as tab, button or knob).Sliding part 20 can join Receive the second elongated tubular member 16, thus sliding part 20 the motion of proximal direction make the second elongated tubular member 16 relative to Before housing 12 exits, and the motion that sliding part 20 is in a distal direction makes the second elongated tubular member 16 relative to housing 12 Enter.

Generally, sliding part 20 can be connected to the second elongated tubular member 16, thus the linear motion of sliding part 20 is with 1:1's Ratio is converted to the linear motion of the second elongated tubular member 16.Sliding part 20 has from farthest side position to recent side position Travel range.As by following in certain embodiments described by, when being in its farthest side position, sliding part 20 engages The direction controlling part (not shown in figure 1) being associated with knob 18 so that knob 18 is extracting first relative to housing 12 only The side of elongated tubular member 14 rotates up.Correspondingly, the motion of the first elongated tubular member 14 is limited to proximal motion. When sliding part 20 is from its farthest side position proximal motion, it is disengaged with direction controlling part so that knob 18 exists only The side making the first elongated tubular member 14 advance rotates up, thus is limited to distad only do by the first elongated tubular member 14 Motion.

Inner tubular member 22 also can extend and have the fixed relationship with housing from housing 12, thus terminates at its far-end In the tapered tip 24 expanded, this tapered tip can be one or separate and also referred to as nose cone or dilator. Inner tubular member 22 has the lumen 26 extended between its near-end and its far-end.Inner tubular member can be by gathering for wire leading pipe Other combination of acid imide or polymer well known by persons skilled in the art is made.In one aspect, distal top 24 is permissible It is radiopaque.The size of lumen 26 can be configured to closely follow on seal wire 28.As shown in FIG., seal wire 28 can be from Through suitable valve 30(such as Luer lock in housing 12) proximad extension, this valve 30 is in fluid communication and seal wire 28 with lumen 26 Also top 24 can be extended distally beyond.In the embodiment not using seal wire, inner member can be solid elongated without lumen Cylindrical member.

Support 32 can be arranged in the far-end of the first elongated tubular member 14 so that the first elongated tubular member 14 interior Support 32 is constrained in its pressure and holds shape by diameter.When support is held by pressure, support 32 engages with ring-type lock 34, thus limit bracket 32 relative to the lengthwise movement of ring-type lock 34, and during arranging when support 32 is expanded, it discharges from ring-type lock 34.Ring-type Lock 34 can have the maximum outside dimension of the interior diameter less than the first elongated tubular member 14, with elongated by extracting first respectively Tubular element 14 or before making the first elongated tubular member 14 and then the layout of support 32 that carries out or reduce during constraint again is rubbed Wipe.

The remote extension of the second elongated tubular member 16 exceedes ring-type lock 34 and includes radially projecting distally stop 36, distally stop 36 has effective overall diameter of the interior diameter more than ring-type lock 34 so that the second elongated tubular member 16 Proximal motion may result in distally stop 36 and engages with ring-type lock 34.The outside dimension of distally stop 36 when support pressure is held Less than the interior diameter of support 32, thus distally stop 36 can be made in the case of the interference not from support 32 to move to ring The distally of shape lock 34.Any suitable structure can be used for the second elongated tubular member 16, including gathering that such as fabric is strengthened Acid imide.When sliding part 20 is in its farthest side position relative to housing 12, distally stop 36 can be in and ring-type lock The pre-position of the initial position interval desired distance of 34, to adapt to during arranging when making support 32 expand owing to shortening The distal motion of the ring-type lock 34 caused.

3rd elongated tubular member 38 can also extend from housing 12 with fixed relationship, has far-end, and this far-end has structure Cause the diameter that proximally direction engages with ring-type lock 34 so that nearside stop is served as in the end of the 3rd elongated tubular member 38 40.In 3rd elongated tubular member 38 can be disposed coaxially the first elongated tubular member 14 and be disposed coaxially the In two elongated tubular member 16.Because the 3rd elongated tubular member 38 has and the fixed relationship of housing 12, distally is spacing Device 40 also keeps fixed position, and when suitably handling knob 18 and sliding part 20, can make the first elongated tubular member respectively 14 and second elongated tubular member 16 together with distally stop 36 relative to its advance or exit.3rd elongated tubular member 38 Can have the physical property of change in length, such as by having the relatively flexible distal length formed by polymeric material Proximal length with the relative stiffness formed by rustless steel hypotube.In the structure substituted, the 3rd elongated tubular member 38 can Total length has the physical property of substantially invariable flexibility.Can be used for the suitable polymeric of the structure of the 3rd elongated tubular member 38 One example of material is polyether-ether-ketone (PEEK).

In an illustrated embodiment, housing 12 has another actuator of the form using quick disposed slide 42. As will be explained below describe, the first elongated tubular member 14 that sliding part 42 can be fixed in housing 12 so that behaviour Author can handle sliding part 42 to realize the 1:1 relative motion of the first elongated tubular member 14 to arrange or tie bracket again 32.Quickly disposed slide 42 can have travel range on housing 12, and it be enough to allow the first elongated tubular member 14 Fully exit thus fully expose support 32 to arrange.The nearside boundary of the travel range exceeding this length can be there is. In the illustrated embodiment, the profile of quick disposed slide 42 is not extended past the outmost surface of housing 12 to reduce due to prominent Go out the probability that structure is stuck in the unexpected translation of the sliding part caused on object.

On the other hand, intraluminal device 10 also can have the friction actuator using clasper 44 form, to promote the Directly handling of one elongated tubular member 14.In one embodiment, clasper 44 can be elongated by being disposed coaxially first Elastic polymeric material on tubular element 14 is formed.Generally, clasper 44 is positioned at the distally of housing 12, but still is positioned at patient's The nearside of inlet point.Although clasper 44 can slide along the first elongated tubular member 14 coaxially, but when applying inward pressure Time clasper 44 can show the friction greatly with the first elongated tubular member 14 and allow manually to make tubular element Advance or exit.Such as, if the actuator handled individually on housing 12 with realize the first elongated tubular member 14 or other The desired motion of tubular element, the length of the first elongated tubular member 14 outside patient body may make intraluminal device 10 Tubular portion will tend to bending.Therefore, clasper 44 allows the position distance patient body is much closer to exert a force to First elongated tubular member 14 is to reduce any bending tendency.

Being only used as example and be not restrictive, operator can start the layout of support 32 by operation knob 18, This can provide mechanical advantage to allow to control to a greater degree the motion of the first elongated tubular member 14.Once operator is to support The placement of 32 is satisfied, then may want to handle quick disposed slide 42 to complete extracting and releasing of the first elongated tubular member 14 Put support 32.But, if wishing tie bracket 32 again before completing to arrange, then operator can handle in the opposite direction Knob 18 and/or use clasper 44 are so that the first elongated tubular member 14 opposite direction on support 32 is advanced.

For the ease of the desired locations that support 32 is placed in patient's vascular system, can be by one or more radiopaques Mark is fixed to (one or more) position of the tubular element of intraluminal device 10.Such as, inner tubular member 22 illustrates Mark 46.Although being shown within the distally of distally stop 36 only for descriptive purpose, but mark 46 can be according to need Want and position with provide about support 32 placement feedback and/or instruction can be by the first elongated tubular before tie bracket 32 again The limitation that shape component 14 is extracted may be no longer practical or safety.

As will be appreciated, mark 46 can be configured to nearside place mark, for induction system initial alignment and It is used for arranging support 32 during the withdrawal of the first elongated tubular member 14.Nearside can be placed mark and be used as the finger of axial location Show, in this axial positions, if the near-end being arranged to its nominal diameter so support will rest against in blood vessel wall.Because inner tube Shape component 22 keeps fixing, so can keep constant at intra-operative mark 46 relative to housing 12.The near-end institute of estimating stent The position arrived is useful information for operator, and is axially movable permissible when average of operation periods chien shih nearside is placed and is flagged with Cause the mistake when placing support, or retrain the most again and arrange again, if this motion is not by operator institute Cause.

On the other hand, mark 46 can be positioned to serve as and retrains boundary marker again, as mentioned.This is by instruction first The farthest withdrawal of elongated tubular member 14 (the most still can the most again tie bracket 32) and for operator be Useful information, and (display all radiopaque structures in target area) can be seen when observing fluoroscope.As Be discussed below, then retrain boundary marker can be altematively or additionally fixed relative to the position of quick disposed slide 42 Position is on housing 12.

The structure of Fig. 1 shows intraluminal device 10 to be ready on seal wire 28 and proceeds to the expectation in patient's vascular system Position is to arrange support 32, such as in the body cavity limited by blood vessel wall 48.As it can be seen, ring-type lock 34 is spacing by nearside Device 40 engages, thus stops the proximal motion of support 32 when the first elongated tubular member 14 is extracted.In Fig. 2-6 schematically Exemplary operation and the manipulation of the actuator including knob 18 and sliding part 20, and the far-end in intraluminal device 10 are shown Layout the effect that tie bracket 32 is formed again.Initial construction in the body make ring-type lock 34 adjoin nearside stop 36 Benefit be when radiopaque for distally support traffic sign placement in target location operator can to immediately begin to regain first thin Tubular member 14, closes without the most nearly gap between side stop and ring-type lock.This simplify operation And shorten and the relevant time of performing the operation, and provide patient thereupon can the reduction of exposure radiation amount.

Start from Fig. 2, once make intraluminal device 10 proceed to the desired locations in patient's vascular system, the most as shown in the figure Operator can make knob 18 rotate (and/or handling quick disposed slide 42) to extract the first elongated tubular member 14.When from When the first elongated tubular member 14 extracted by support 32, the free part of support 32 is at vascular intramedullary expansion, thus and body cavity Blood vessel wall 48 contact.Owing to this is the support substantially shortened, so the total length of support 32 has shortened, and this shortening is extremely A few part has occurred and that in the first elongated tubular member 14.The far-end of support 32 having been expanded to contact with blood vessel wall 48 can Keep the most motionless in vascular.Therefore, as it can be seen, the near-end of support 32 and ring-type lock 34 fixing releasedly are the Moving to the axial Horizon in distally in one elongated tubular member 14 and reach the space between nearside stop 40 and ring-type lock 34, this nearside limits Position device 40 can be fixing relative to housing 12 and patient.

Second elongated tubular member 16 keeps relative motionless with the position of correspondingly distally stop 36, distally stop 36 Being positioned at enough distal side of the far-end of pusher pipe nearside stop 40, the shortening of this support 32 will not push into ring-type lock 34 It is in contact with it or limits the distal motion owing to shortening the support 32 caused.If the position that operator is to arranged support Put satisfaction, then the first elongated tubular member 14 can fully be regained the near-end of support 32, thus allows it to expand into along it Total length contacts with vascular 48 and discharges from ring-type lock 34 due to radial dilatation.As can be seen, when elongated first When tubular element 14 is extracted, quick disposed slide 42 translates relative to housing 12 proximad the most.As required, available rotation One or both in button 18 and sliding part 42 realizes the layout of support 32.

Alternatively, if it is desired to support 32 is reorientated and the first elongated tubular member 14 is not yet pulled out through closing The suitable boundary marker (such as mark 46) that retrains again, then can be as about implementing retraining again of support 32 described by Fig. 3-5.For Such as the beginning constraint manipulation again schematically shown in Fig. 3, sliding part 20 its farthest side position from housing 12 can be handled Proximal motion.When sliding part 20 proximal motion, it causes the corresponding proximal motion of the second elongated tubular member 16 Until distally stop 36 engages with ring-type lock 34.When distally stop 36 contacts with ring-type lock 34, resistance can be felt.By In shortening, when arranging the support 32 of major part, the relatively small proximal motion of sliding part 20 can with make distally Stop 36 engages relevant with ring-type lock 34.As will be described in greater detail below, the displacement of sliding part 20 proximad is made to make The direction controlling part being associated with knob 18 is disengaged, thus allow to make the first elongated tubular member 14 advance prevent simultaneously into Extracting of one step.

Then, Fig. 4 schematically shows the first elongated tubular member 14 and advances with tie bracket 32 again.Can be by handling Knob 18 and/or sliding part 42 and implement the advance of the first elongated tubular member 14.But, due to be likely to occur in patient or Friction at the haemostatic valve of the conductor of other source docking, it is desirable to handle clasper 44 with by the first elongated tubular product structure Part 14 is pushed in the health of patient, thus causes it to advance on support 32 and tie bracket 32 again.As it has been described above, grasp Device 44 can be located at the position of relatively close conductor to reduce what the first elongated tubular member 14 when applying thrust bent Tendency.

Operator may utilize sense of touch feedback and keeps the tension force of the aspiration level on sliding part 20, thus keeps distally spacing Device 36 and ring-type lock 34 engage and compensate any relative of when stent length is increased support 32 owing to retraining again Proximal motion.Distally stop 36 is kept to contact support 32 can be maintained at tensioning with ring-type lock 34 by the proximal force of desired amount State and assist the first elongated tubular member 14 support 32 go forward into rather than by the constrained part of support 32 distad Pushing, this may cause support unintended movements in vascular system.The proximal force being applied to distally stop 36 is not anticipated Support 32 proximad is pulled by figure.Due to the first elongated tubular member 14 and coupling between knob 18 and sliding part 42, no matter Operator's whether operated actuator or use clasper 44 to realize advancing, the advance of the first elongated tubular member 14 causes rotation The rotation of button 18 and the sliding part 42 motion on indicated direction.When operator applies power to be kept into by distally stop 36 When engaging with ring-type lock 34, sliding part 20 also can proximal motion, and support 32 is elongated when being retrained again.

When the first elongated tubular member 14 is advanced in the total length of support 32, intraluminal device 10 can be in Fig. 5 The structure schematically shown.Distally stop 36 still can engage with ring-type lock 34, and sliding part 20 can be positioned on relatively Nearside in its farthest side position of housing.But, the first elongated tubular member 14 and quickly layout component 42 return to Their initial position, support 32 is by completely radial constraint.Subsequently, schematically showing as in Fig. 6, operator can handle slip Part 20 is to be returned to its farthest side position relative to housing 12.This causes the second elongated tubular member 16 relative to nearside Stop 40 is distally advanced, so that intraluminal device 10 returns to the structure shown in Fig. 1, thus can will prop up as required Frame 32 is reorientated.In the embodiment with direction controlling part, sliding part 20 is made to return to its Hui Shi direction, farthest side position Control piece is re-engaged, thus the first elongated tubular member 14 can be pulled out and do not advance.

For an embodiment, show the suitable embodiment about housing 12 and actuator thereof in Fig. 7-11 enters one Step details.Start from Fig. 7, it is shown that the schematic cutaway view of housing 12.Knob 18(is the most for the sake of clarity gone Remove) it is associated with Direction Control Unit 50, as described below, Direction Control Unit 50 and then be connected to the first elongated tubular product The near-end 52 of component 14.Near-end 52 is also directly coupled to quick disposed slide 42.Utilize connecting rod 54 by sliding part 20 Receive the near-end 56 of the second elongated tubular member 16.The near-end 58 of the 3rd elongated tubular member 38 is in the first elongated tubular member 14 And second elongated tubular member 16 near-end between position be attached to housing 12.Near-end 56 in the second elongated tubular member 16 Nearside, the near-end 60 of inner tubular member 22 is attached to housing 12.Notice, near-end 56 be configured to the longitudinal axes L along housing- L translates, and therefore can be considered as " passing through member ".

As it has been described above, this structure allows the first elongated tubular member 14 and the second elongated tubular member 16 relative to housing 12 Independently progress or extract, and the 3rd elongated tubular member 38 has fixing relative position with inner tubular member 22.First is thin Tubular member 14 is disposed coaxially in the 3rd elongated tubular member 38, and the 3rd elongated tubular member 38 is set coaxially Put in the second elongated tubular member 16, the second elongated tubular member 16 and then be disposed coaxially on inner tubular member 22. Direction Control Unit 50 includes travelling gear 62, and this travelling gear 62 shares an axle with knob 18 and is fixed to knob 18, thus knob 18 rotates together with travelling gear 62.The tooth of travelling gear 62 engages with driven pulley 64 thus by knob 18 Rotary motion transfer to driven pulley 64.Flexible ring component (the most not shown) is arranged on around driven pulley 64 And around idler pulley 66.Sliding part 42 is by flexible ring component load-bearing and the near-end that is fixed to the first elongated tubular member 14 52, as mentioned.If it is required, scalable gear ratio and/or diameter of pulley and provide mechanical advantage, consequently facilitating first is elongated The extracting and/or advance, as mentioned above of tubular element 14.Such as, the rotation from knob 18 can be reduced to input, to export reduction Linear convergent rate and motion to the first elongated tubular member 14 apply bigger control.Alternatively, as required, can increase Given rotation input, to realize extracting faster or advancing.

Schematically showing the element of flexible ring drivetrain in Fig. 8 A, flexible ring component is implemented as in this embodiment Belt 68.As will be appreciated, flexible ring component can also be V-type band, toothed belt, chain, muscle or any other is suitable Structure.Belt 68 traveling around driven pulley 64 and idler pulley 66.Additionally, belt 68 is fixed to sliding part 42, should Sliding part 42 and then be fixed to the near-end 52 of the first elongated tubular member 14.Therefore, the rotary motion of knob 18 is converted into Move along a straight line thus make the first elongated tubular member 14 advance or extract according to direction of rotation.Flexible ring component can be in fully Tensioning state under to give the friction with the expected degree of driven pulley axle 70.

Flexible ring component may be configured to present relatively low elongation (the most about 3%) under the highest anticipated service load, Because any elongation of tensioning member can be considered the input delay for operator or error.Additionally, spring element can be inserted Enter flexible ring means path thus constant tension force is provided and increases the friction with driven pulley 64.Can use replacement or its Its technology increases friction, such as by using the repeatedly winding at driven pulley axial flexible ring component.Additionally, can V-shaped groove is used together with single winding or helicla flute is used together with repeatedly winding, thus strengthen and flexible ring component Joint.

As it has been described above, travelling gear 62 and knob 18 can be coaxial and be fixed to knob 18, thus the two Element rotates together.Similarly, ratchet 70 can be also coaxial with knob 18 and be fixed to knob 18.View at Fig. 8 A In, cut away partly to show ratchet 70 by knob 18 and travelling gear 62.If it is required, knob 18, travelling gear 62 and/or Ratchet 72 may be integrally formed.By connector 72, connecting rod 54 can be fixed to the near-end 56 of the second elongated tubular member 16, So that sliding part 20 deviates from the longitudinal axis of the tubular element being coaxially disposed to avoid interfering with sliding part 42, thus permit Permitted them to be movable with respect to.Such as, connector 72 can be the single unitary member shaped as required, with by solid Fixed attachment and be connected directly to connecting rod 54 and the near-end 56 of the second elongated tubular member 16, if or being entered by dry part Row connects so that the linear motion of sliding part 20 is directly transformed into the second elongated tubular product structure with the ratio of 1:1 by connector 72 The linear motion of part 16.

With reference to Fig. 8 B, it is shown that elongated by the 3rd via (component 58a's) the convex tab 59a being inserted in opening 59b The adnexa of the near-end 58a of tubular element 38 is attached to an alternate embodiment of housing 12.Near-end 58a is connected to the tubulose of fluting Component 57, this tubular element 57 allows the near-end of component 16 or shuttle 56 along longitudinal axes L-L in generally linear path Middle translation and there is the bending of connecting rod 54 that is little or that do not caused due to the actuating of sliding part 20.Inner tubular member The near-end 60 of 22 is attached to housing 12 at the nearside of the shuttle 56 of the second elongated tubular member 16.

As seen in fig. 8 c, a part for the outer surface of shuttle 56 is trapped in the groove 57a of slotted component 57, thus Guarantee to exist when shuttle 56 translates along axis L-L due to the outer rail that provided by groove 57a little or do not have Deviation.And, shuttle 56 is provided with pass through openings 56a, and in pass through openings 56a, component 38(is not shown) serve as wearing The internal guide rail of shuttle 56, is shown in further detail in Fig. 8 D.

Fig. 9 schematically shows the further details of an embodiment of Direction Control Unit 50, wherein, one Or multiple elastic deflectable element serve as can be with the ratchet of the indented joint of ratchet 70.Direction Control Unit can include that the first elasticity can Deflecting element 74, this first elastic deflectable element 74 has the one end 76 and relative free end being installed in housing 12 78, this free end 78 optionally engages with the tooth 80 on ratchet 70 thus allows rotate counterclockwise and limit dextrorotation Turn, as directed.Sliding part 20 includes the first cam 82, when sliding part 20 is in its farthest side position relative to housing 12 Time, this first cam 82 engages so that free end 78 engages with ratchet 70 with the first elastic deflectable element 74.As will Understanding, this structure allows ratchet 70 to rotate in (in shown perspective view) counter clockwise direction, because tooth 80 can make first The free end 78 of elastic deflectable element 74 deflects and allows to rotate.But, ratchet 70 rotates in the clockwise direction Do not make engaged free end 78 deflect, thus be essentially prevented from ratchet in the rotation that this side up.Due to as above institute State and make ratchet 70 be connected to the first elongated tubular member 14, so when sliding part 20 is in its farthest side position and controls with direction When assembly 50 processed engages, the first elongated tubular member 14 can be pulled out but will not advance.

Direction Control Unit 50 may also include the second elastic deflectable element 84, and this second elastic deflectable element 84 has The one end 86 being installed in housing 12 and relative free end 88, this free end optionally engages with the tooth 80 on ratchet 70 Thus allow to turn clockwise and limit rotation counterclockwise.When sliding part 20 is in its farthest side position relative to housing 12 Time, the second cam 90 on sliding part engages with the second elastic deflectable element 84, so that free end 88 and the tooth of ratchet 70 80 are disengaged.In shown structure, the second elastic deflectable element 84 is disengaged, in order to the first elastic deflectable unit Part 74 controls the direction of rotation of ratchet 70, as mentioned above.But, when sliding part 20 proximal motion, the second cam 90 and Two elastic deflectable elements 84 are disengaged so that free end 88 bounces back into its non-offset position engaged with tooth 80.

Similarly, when sliding part 20 proximal motion, the first cam 82 also departs from the first elastic deflectable element 74 Engage, thus allow it to take its non-offset position and free end 78 to be disengaged with tooth 80.Therefore, sliding part 20 is from it Proximal motion that distal position starts allows ratchet 70 to rotate in the clockwise direction, because tooth 80 can make the second elasticity can be inclined The free end 88 turning element 84 deflects thus allows to turn clockwise.Rotating counterclockwise of ratchet 70 is limited, because should Motion does not make the free end 88 of joint deflect.Additionally, because ratchet 70 is connected to the first elongated tubular member 14, so work as When making sliding part 20 from its farthest side position proximal motion and be disengaged with Direction Control Unit 50, but this is first elongated Tubular element 14 can advance but not be pulled out.

Figure 10 and Figure 11 schematically show and be in the Direction Control Unit 50 arranged and retrain structure again Diagram.In layout structure shown in Fig. 10, sliding part 20 is in its farthest side position relative to housing 12 so that first Cam 82 engages with the first elastic deflectable element 74 and the second cam 90 engages with the second elastic deflectable element 84.First The joint of cam 82 makes the first elastic deflectable element 74 be displaced to engage with ratchet 70 from nominal disengaged position, and the The joint of two cams 90 makes the second elastic deflectable element 84 open from its nominal combined deviation of ratchet 70.Therefore, first is elastic Deflectable element 74 allows ratchet 70 to rotate counterclockwise and limit ratchet 70 to rotate clockwise.Sliding part 20 also can have gripper 92, this gripper 92 protuberance 94 with housing 12 when being in its farthest side position pins.Therefore, once it is released, needs ratio Power needed for making sliding part 20 rectilinear translation the biggest relative power is to make gripper 92 deflect.This layout prevents sliding part 20 Unexpected rectilinear translation, the most during transportation or use in operation during, and rest on farthest side position until Make sliding part 20 proximal motion wittingly.And, the interaction of gripper 92 and protuberance 94 provides positive feedback, shows to slide Part 20 has returned to its farthest side position after constraint manipulation again, sends signal and shows that Direction Control Unit 50 is by sliding part 20 engage and can the first elongated tubular member 14 be extracted now after the reorientating of support 32.

Correspondingly, showing and retrain structure again in Figure 11, wherein, sliding part 20 has been moved to the near of its farthest side position Side, as directed.In this construction, the first cam 82 is disengaged with the first elastic deflectable element 74, and the second cam 90 are disengaged with the second elastic deflectable element 84.First elastic deflectable element 74 returns to its non-offset position and not Engage with ratchet 70, and the second elastic deflectable element 84 returns to its non-offset position thus engages with ratchet 70.Therefore, Second elastic deflectable element 84 allows ratchet 70 to rotate clockwise and limit ratchet 70 to rotate counterclockwise.

Figure 12 schematically shows the intraluminal device 100 of the replacement of the technology being embodied as the disclosure.With Also use single inner tubular member different outside two tubular elements, the feature relevant to inner tubular member can be incorporated to the second tubulose In component.Except as otherwise noted, similar element has reference (such as, the housing 112 of intraluminal device 110 of correspondence Housing 12 corresponding to intraluminal device 10).So, intraluminal device 100 generally can include housing 112, extend from housing 112 And the first elongated tubular member 114 that can axially move relative to housing 112 and also extend from housing 112 and can phase The second elongated tubular member 116 that housing 114 is axially moved.The first actuator on housing 112 is configured to knob 118 And the first elongated tubular member 114 can be made to advance or extract the first elongated tubular member 114.It is configured to sliding part 120 Second actuator is connected to the second elongated tubular member 116, thus the motion of sliding part 120 makes the second elongated tubular member 116 Advance and extract the second elongated tubular member 116.Knob 118 also can have Direction Control Unit as above, with basis Sliding part 120 whether engages (that is, being in its farthest side position relative to housing 112) with direction controlling part and to limit first thin The direction of motion that tubular member 114 is allowed.In this embodiment, the second elongated tubular member 116 is at its terminating at distal ends In the tapered tip 124 expanded, and there is the lumen 126 extended between its proximal and distal ends.Seal wire 128 can be from housing 112 proximads extend through and the suitable valve 130(such as Luer lock of lumen 126 fluid communication), and seal wire 128 also can be to far Side extends beyond top 124.

In the embodiment not using seal wire, the second elongated tubular member 116 can be the solid slim long cylinder without lumen Shape component.Support 132 can be arranged in the far-end of the first elongated tubular member 114, with ring-type lock 134 fixing releasedly It is constrained in pressure to hold in structure.The remote extension of the second elongated tubular member 116 exceedes ring-type lock 134 and have can be with ring-type lock The 134 radially projecting distally stops 136 engaged.3rd elongated tubular member 138 can also be with fixed relationship from housing 112 Extending, the 3rd elongated tubular member 138 has far-end, and this far-end has diameter, is configured to proximally direction and ring-type lock 134 Engage, thus form nearside stop 140.3rd elongated tubular member 38 can have and the fixed relationship of housing 112, with nearly Side stop 140 is maintained at the fixed position of correspondence.Housing 112 may also comprise quick disposed slide 142, and this quickly arranges cunning Moving part 142 is operatively coupled to the first elongated tubular member 114, as mentioned above.Intraluminal device 110 can have clasper 144, It is also similar to that above-described embodiment.Additionally, the second elongated tubular member 116 can have one or more radiopaque mark (such as mark Will 146), indicating the nearside of support 132 to place, retrain boundary again or with the operation phase implemented by intraluminal device 100 Other closed suitably indicates.

Figure 13 schematically shows the another embodiment of the disclosure of the intraluminal device being similar to Fig. 1.Unless Being otherwise noted, similar element has corresponding reference, and (such as, the housing 212 of intraluminal device 210 is corresponding in vascular The housing 12 of device 10).So, intraluminal device 200 generally can include housing 212, extend from housing 212 and can be relative to The first elongated tubular member 214 that housing 212 axially moves and also extend from housing 212 and can be relative to housing 214 The second elongated tubular member 216 axially moved.The first actuator on housing 212 is configured to knob 218 and can make One elongated tubular member 214 is advanced or extracts the first elongated tubular member 214.It is configured to the second actuator of sliding part 220 It is connected to the second elongated tubular member 216, thus the motion of sliding part 220 makes the second elongated tubular member 216 advance and extract Second elongated tubular member 216.According to sliding part 220 whether knob 218 also can have Direction Control Unit as above, with Engage (that is, being in its farthest side position relative to housing 212) with direction controlling part and limit the first elongated tubular member 214 institute The direction of motion allowed.In this embodiment, inner tubular member 222 extends from housing 212, and can be solid with housing 212 Determine relation.Inner tubular member 222 and has at it proximally and distally in the top 224 of the taper expanded at its terminating at distal ends Between extend lumen 226.

Seal wire 228 can extend through and suitable valve 230(such as Rule of lumen 226 fluid communication from housing 212 proximad Lock), and seal wire 228 also can extend distally beyond top 224.Support 232 may be disposed at the first elongated tubular member 214 Far-end in, be constrained in pressure with ring-type lock 234 fixing releasedly and hold structure.The far-end of the second elongated tubular member 216 prolongs Extend over ring-type lock 234 and there is the radially projecting distally stop 236 that can engage with ring-type lock 234.3rd elongated tubular Shape component 238 can also extend from housing 212 with fixed relationship, has the far-end of band nearside stop 240, this nearside stop 240 have the diameter increased relative to the 3rd elongated tubular member 238 engages with ring-type lock 234 with proximally direction.Real at this Executing in example, nearside stop 240 can be attached to the single element of the 3rd elongated tubular member 238 or can be one 's.3rd elongated tubular member 238 can have and the fixed relationship of housing 212, is maintained at correspondence with nearly side stop 240 Fixed position.

Housing 212 may also comprise quick disposed slide 242, and this quick disposed slide 242 is operatively coupled to first Elongated tubular member 214, as mentioned above.Intraluminal device 210 can have clasper 244, is also similar to that above-described embodiment.This Outward, the second elongated tubular member 216 can have one or more radiopaque mark (such as mark 246), to indicate support 232 Nearside place, retrain boundary again or other relevant with the operation implemented by intraluminal device 200 suitably indicates.

Schematically showing another embodiment of the disclosure in Figure 14 A, it is also similar to that the intraluminal device of Fig. 1, And similar element has corresponding reference, and (such as, the housing 312 of intraluminal device 310 is corresponding to intraluminal device The housing 12 of 10), except as otherwise noted.Here, intraluminal device 300 generally can include housing 312, extend from housing 312 and The first elongated tubular member 314 that can axially move relative to housing 312 and also extend from housing 312 and can be relative In the second elongated tubular member 316 that housing 314 axially moves.The first actuator being configured on the housing 312 of knob 318 The first elongated tubular member 314 can be made to advance or the first elongated tubular member 314 is extracted.It is configured to the of sliding part 320 Two actuators are connected to the second elongated tubular member 316, thus before the motion of sliding part 320 makes the second elongated tubular member 316 Enter and be pulled out.Knob 318 also can have Direction Control Unit as above, with according to sliding part 320 whether with direction Control piece engages (that is, being in its farthest side position relative to housing 312) and limits the first elongated tubular member 314 and allowed The direction of motion.In this embodiment, inner tubular member 322 extends from housing 312, and can be fixing closing with housing 312 System.Inner tubular member 322 prolongs in the tapered tip 324 and having expanded between its proximal and distal ends at its terminating at distal ends The lumen 326 stretched.

Seal wire 328 can extend through and suitable valve 330(such as Rule of lumen 326 fluid communication from housing 312 proximad Lock), and seal wire 328 also can extend distally beyond top 324.Support 332 can be arranged on the first elongated tubular member 314 Far-end in, be constrained in pressure with ring-type lock 334 fixing releasedly and hold in shape.The far-end of the second elongated tubular member 316 Extend beyond ring-type lock 334, and there is the radially projecting distally stop 336 that can engage with ring-type lock 334.3rd is elongated Tubular element 338 can also extend from housing 312 with fixed relationship, has far-end, and the nearside that far-end has increase diameter is spacing Device 340 engages with ring-type lock 334 with proximally direction.3rd elongated tubular member 338 can have the fixing pass with housing 312 System, is maintained at the fixed position of correspondence with nearly side stop 340.

As directed, in this embodiment, ring-type lock 334 can be free floating and have portions of proximal, and this is near Side part be dimensioned to coordinate in the interior diameter of the 3rd elongated tubular member 338.In one aspect, ring-type lock 334 Portions of proximal can have enough distances, thus the some amount of ring-type lock 334 is still when support 332 experiences the maximum amount of shortening So stay in the interior diameter of the 3rd elongated tubular member 338, thus keep ring-type lock 334 and the 3rd elongated tubular member 338 it Between relation.Ring-type lock 334 can have mid portion, and this mid portion has the diameter of increase, and it can be by nearside stop 340 Engage.The distal part of ring-type lock 334 can have enough diameters, incites somebody to action to engage with support 332 when support is held by pressure It is fixed.Ring-type lock 334 can be overall or can be formed by the most many individually elements.Housing 312 is also Can include quick disposed slide 342, this quick disposed slide 342 is operatively coupled to the first elongated tubular member 314, as Upper described.Intraluminal device 310 can have clasper 344, is also similar to that above-described embodiment.Additionally, the second elongated tubular member 316 can have one or more radiopaque mark (such as mark 346), to indicate the nearside of support 332 to place, retrain boundary again Or other relevant with the operation implemented by intraluminal device 300 suitably indicates.

In an illustrated embodiment, housing 312 can include being positioned at adjacent with the travel range of quick disposed slide 342 Correct position retrain boundary marker 350 again.This represents that first that support 332 still will be made to be retrained the most again is thin The farthest withdrawal of tubular member 314.Retraining boundary marker 350 again can be as the conjunction of the far-end being positioned at intraluminal device 300 The replacement of suitable radiopaque mark (such as 346) or supplement and provide.Housing 312 also can have removable lid 352, with protection Sliding part 320 and help prevent the accidental operation during rack arrangement.If it is desire to support 332 is reorientated, opening Before beginning to retrain process again, first operator removes lid 352 with sensible sliding part 320.Sliding part 352 has outer surface 352a, when When lid 352 is installed to housing 312, operator can be seen that this outer surface 352a.

It should be pointed out that, sliding part (in various change combinations, such as element 20,120,220 or 320) is preferably put Put after knob 18,118,218 or 318, thus cause user (such as, doctor) that the thumb of user is left knob (18,118,218 or 318) are to use sliding part (20,120,220 or 320).By causing user to use sliding motion Using sliding part (20,120,220 or 320), this promotes user to be similar to for clasper (44,144,244,344) employing Sliding motion controls any bending of outer shaft (14,114,214 or 314).Owing to placing cunning relative to knob and clasper Moving part, thus this structure ensure that this device can binding characteristic again proper use of.And, lid 352 is security feature, this The unintentional engagement of sliding part (20,120,220 or 320) is prevented in it.Although not shown, be formed in the downside of lid 352 is convex The protuberance playing portion's form can serve as stop component, to prevent sliding part from transporting along axis when covering 352 and being in appropriate location Dynamic.Although the preferred embodiment provides the sliding part after knob, but sliding part can be made to be positioned at before knob also in power In the range of profit requires.

Lid 352 is provided with security feature, and it combines Figure 14 B and can most preferably see.Figure 14 B shows the interior table of lid 352 Face 352b.In this perspective view (as operator by lid reversion in case when checking shown), inner surface 352b arrange Having embossed surface 352c, this embossed surface 352c serves as the stop component abutting against sliding part 20.And, locking surface 321b can be formed on the downside 352b of lid 352, to allow lid to engage with the component 321a being formed on handle.

With intraluminal device implement operation before, can perform rinsing step so that air is discharged from system so that The amount of the air that intra-operative may introduce minimizes.In order to contribute to this rinsing step, the design of the disclosure allows through single Individual port is rinsed.As shown in fig. 14 a, the distal part of inner tubular member 322 can have and lumen 326 fluid communication Multiple eyelets.Before making intraluminal device 310 advance on seal wire 328, can will rinse the source of fluid (such as normal saline) even Receive valve 330 to be transported in the near-end of lumen 326 by this fluid.When lumen is filled, the air in system will be arranged Go out until fluid outflow hole eye 354 and flow through between the first elongated tubular member 314, support 332 and inner tubular member 322 Any space.Operator can temporarily block the distal openings of lumen 326 to force the fluid over eyelet 354.Additionally, such as Figure 15 End-view in schematically show, the overall diameter of the distal top 324 of taper can closely correspond to the first elongated tubular product structure The interior diameter of part 314 so that multiple grooves 356 contribute to the outflow of fluid and air during rinsing step.

As discussed above, it is possible to use what in the vascular of the technology being embodied as the disclosure, induction system was arranged props up Frame can be self expandable.The side view of Figure 16 schematically shows the example being in the support 32 that pressure holds structure, It uses the helical form geometry being fully connected, and has length L when support is held by pressure_cOutside when support is held by pressure Diameter D_c.Such as, when in the distal part being arranged on the first elongated tubular member 14, the structure shown in Figure 16 corresponding to Constrained state completely.As shown in FIG., suitable feature (such as eyelet etc.) can corresponding with on ring-type lock 34 cave in mutually Act in a mode of operation, fix expansible intracavitary unit and in another mode of operation, discharge support 32.Work as handle When first elongated tubular member 14 fully pulls out layout support 32, it can be according to the geometry of vascular in patient's vascular Expansion, until maximum non-constrained length L_ncWith diameter D_nc, according to its design ginseng schematically shown in the side view of Figure 17 Number.When expanded, the feature of support 32 is discharged from ring-type lock 34, thus is discharged.Pressure holds length and nominal arrangement length Between difference be considered as obvious when more than 10%.When being arranged, if the far-end of support and vascular when stent-expansion Wall contacts, then it can be motionless relative to vascular.Therefore, when arranging support, the near-end of support can distal motion prop up with permission Frame is expanded.

As will be appreciated, any suitable design can be applied to the ring being used together with disclosure intraluminal device Shape is locked.This ring-type lock can press the support holding diameter to interact with being in it so that when being held in oversheath by pressure by support, Support move together with ring-type lock or with fixed relationship keep together with motionless.Bracket lock can axially be shorter than support.Generally, Bracket lock can interact with pressing the relatively short length (up to 4 or 5 mm) holding support.When support is not allowing and bracket lock Diameter Elastic deformation (constrained) of the reduction of contact and time temperature exceedes transition temperature, support self expandable arrives its " memory " shape, and no longer interact with bracket lock and be released.Bracket lock may be configured to the 3rd elongated tubular member or Nearside stop generation mechanical interaction, to stop support and the motion in a proximal direction of ring-type lock set.

Similarly, bracket lock may be configured to and distally stop generation mechanical interaction, to stop support and ring-type lock The distal motion of assembly.Can being formed by rigid material at least partially of ring-type lock, is executing torque and the axial force of design It is added to its holding general cylindrical shape during this material.Some embodiments of ring-type lock the most radially discharge support (that is, support It is not constrained in the diameter of reduction by ring-type lock).Some embodiments of bracket lock the most radially discharge support and (that is, do not cause Dynamic, a part for support is also constrained in the diameter of reduction by bracket lock).In certain embodiments, can be by the structural elements of support Part realizes the contact between support and ring-type lock.Such as, scaffold pole can extend up to certain distance radially inward, and can be with Comply with the deformable material contact of ring-type lock around strut or other structural elements, with fixing in a mode of operation can Expand intracavitary unit and in another mode of operation, discharge support.In some embodiments of induction system, ring-type lock can Freely axial translation and the longitudinal axis around tubular element (the such as second elongated tubular member 16) rotates, and ring-type lock is held It is loaded on this tubular element.

In some embodiments of induction system, the length between nearside stop and distally stop can be variable And determined by operator, but initially when being ready to use, when whole support by the most constrained in external member time, ring The possible axial travel distance of shape lock can be more than 20 (20) the percent of stent length to adapt to shorten, and at other More than 25 (25) the percent of this length in embodiment.In certain embodiments, ring-type it is locked between two stops Possible axial travel distance is variable and is determined by operator, but initially can be more than corresponding to when being ready to use The predetermined length that big expection is shortened.

Give description above with reference to presently disclosed embodiment of the present utility model.This utility model art Skilled person will appreciate that, can be in the case of the most substantially deviating from principle of the present utility model, spirit and scope The change in structure described by enforcement and change.As understood by those skilled in the art, accompanying drawing is not drawn necessarily to scale. Therefore, description above is not construed as being pertaining only to precise structure described and illustrated in the accompanying drawings, but it is understood that Becoming consistent with claims and support claims, claims should have them the most comprehensively with rationally Scope.

Claims

1. an intraluminal device, it is characterised in that including:

Housing；

The first elongated tubular member extended from described housing and can axially move relative to described housing；

Extend and the second elongated tubular member that can axially move relative to described housing from described housing, described second thin Tubular member has far-end, and described far-end is with radially projecting distally stop, wherein, and described second elongated tubular member It is disposed coaxially in described first elongated tubular member；With

Ring-type lock, fixes expansible intracavitary unit and operates shape at another in described Cheng Yi mode of operation of ring-type Lock structure Discharging described intracavitary unit in state, described intracavitary unit is, wherein, described ring-type lock is disposed coaxially described second elongated On tubular element and be disposed coaxially in described first elongated tubular member, and wherein, described ring-type lockset has little Interior diameter in effective overall diameter of described distally stop.

2. intraluminal device as claimed in claim 1, it is characterised in that also include being connected to described first elongated tubular member The first actuator on the housing, described first actuator is configured to when being manipulated by make described first elongated tubular product structure Part is axially movable relative to described housing.

3. intraluminal device as claimed in claim 2, it is characterised in that described first actuator is configured to make described first thin Tubular member is axially movable, until the far-end of described first elongated tubular member is located relative to the near of described ring-type lock Side.

4. intraluminal device as claimed in claim 2, it is characterised in that described first actuator includes knob, and wherein, The rotation of described knob makes described first elongated tubular member be axially movable relative to described housing.

5. intraluminal device as claimed in claim 4, it is characterised in that described knob and described first elongated tubular member connection Receive flexible ring component.

6. intraluminal device as claimed in claim 5, it is characterised in that also include being connected to described flexible ring component in institute State the 3rd actuator on housing.

7. intraluminal device as claimed in claim 2, it is characterised in that also include being connected to described second elongated tubular member The second actuator on the housing, described second actuator is configured to when being manipulated by make described second elongated tubular product structure Part is axially movable relative to described housing.

8. intraluminal device as claimed in claim 7, it is characterised in that described second actuator has relative to described housing Primary importance and from the travel range of described primary importance, described primary importance corresponding to described distally stop relative to The predetermined distal position of described housing, described travel range makes described distally stop relative to described predetermined distal position to closely Side is axially movable.

9. intraluminal device as claimed in claim 8, it is characterised in that described second actuator includes sliding part.

10. intraluminal device as claimed in claim 9, it is characterised in that described sliding part is arranged on described first and activates After device, closer to the user of described device.

11. intraluminal device as claimed in claim 8, it is characterised in that also include the side being associated with described first actuator To control piece, wherein, described second actuator engages with described direction controlling part when being in described primary importance so that described Direction controlling part only allows the first elongated tubular member relative to described housing proximal motion.

12. intraluminal device as claimed in claim 11, it is characterised in that described second actuator is when moving across described row It is disengaged with described direction controlling part when entering scope so that described direction controlling part only allows described first elongated tubular member Relative to described housing distal motion.

13. intraluminal device as claimed in claim 12, it is characterised in that described direction controlling part includes ratchet and ratchet machine Structure.

14. intraluminal device as claimed in claim 7, it is characterised in that lid is arranged on described second actuator so that Sensible described second actuator by the described lid of removing.

15. intraluminal device as claimed in claim 1, it is characterised in that be additionally included in the fixing distally relative to described housing Position is arranged on the nearside stop in described first elongated tubular member, and wherein, described ring-type to be locked in described nearside spacing The distally of device.

16. intraluminal device as claimed in claim 2, it is characterised in that described first actuator provides mechanical advantage so that Described first elongated tubular member is less than input motion relative to the corresponding axially-movable of described housing.

17. intraluminal device as claimed in claim 1, it is characterised in that described ring-type lock includes multiple depression, the plurality of Depression is configured to capture the element of described expansible intracavitary unit.

18. intraluminal device as claimed in claim 1, it is characterised in that the distally being additionally included in described housing is set coaxially Put the friction actuator in described first elongated tubular member.

19. intraluminal device as claimed in claim 1, it is characterised in that also include being disposed coaxially described second elongated The 3rd elongated tubular member of described distally stop, wherein, the described 3rd in tubular element and is extended past from described housing Elongated tubular member includes what the proximal port and having of lumen and described lumen fluid communication was in fluid communication with described lumen The distal part of multiple eyelets.

20. intraluminal device as claimed in claim 19, it is characterised in that described intraluminal device includes the top, distally of taper End, described distal top has multiple groove, and the plurality of groove is configured to when described distal top adjoins described first elongated The outflow of the fluid of supply from the eyelet of described 3rd elongated tubular member is allowed during the far-end of tubular element.

21. 1 kinds can tie bracket induction system again, it is characterised in that including:

Housing；

Extend and the second elongated tubular member that can axially move relative to described housing from described housing, described second thin Tubular member has far-end, and described far-end is with radially projecting distally stop, wherein, and described second elongated tubular member It is disposed coaxially in described first elongated tubular member；

Ring-type lock, described ring-type lock is disposed coaxially in described second elongated tubular member and is disposed coaxially described In first elongated tubular member, wherein, described ring-type lockset has the interior diameter of the effective overall diameter less than described distally stop； With

Self-expanded stent, described Self-expanded stent is fixed to described ring-type lock in a mode of operation, and described The diameter reduced it is restrained in the distal part of one elongated tubular member.