CN209678769U - Support system in stent conveying device and art in art - Google Patents

Abstract

The utility model relates to medical instruments field, support system in stent conveying device and a kind of art is provided in a kind of art.Stent conveying device is for assembling and discharging bracket in branching type art in the art, bracket includes main body rack and side branch stent in branching type art, stent conveying device includes being used to support the collateral liner of main body rack and being used to support the collateral liner of side branch stent, the mantle for fettering side branch stent and withdraw part in art, collateral liner is communicating structure, it withdraws part to move in collateral liner, mantle is connect after the distal end of collateral liner is concentrated with the distal end for withdrawing part.Wherein, mantle, which is also used as branch's breaking member, prevents the branch vessel of target position from backflowing, and guarantees getting a clear view within the scope of stent procedure, doctor is facilitated to operate, blocking process does not need independent separate operations, shortens operating time, improves the success rate and postoperative effect of operation.Support system includes stent conveying device in above-mentioned art in the art.

Description

Support system in stent conveying device and art in art

Technical field

The utility model relates to medical instruments field, in particular to stent conveying device and one kind include described in a kind of art Support system in the art of stent conveying device in art.

Background technique

In recent years, it is conjugated by the stenter to implant for using inner cavity insulation technology under surgical conditions to aortopathy The method set is since wound is small, success rate is higher, in the lesion of many thoracic aortas, abdominal aorta, ilium portion blood vessel etc. It is widely applied.Wherein by surgical operation by stenter to implant to corresponding lesion locations, therefore this bracket is commonly referred to as For bracket in art.Bracket needs to be implanted by means of conveying device to corresponding lesion locations in art, that is, utilizes conveying device The diameter of bracket in art is reduced, bracket in art is discharged after being transported to corresponding lesion locations, also to be carried out in art when necessary The suture of bracket and artificial blood vessel, finally withdraws from conveying device.But due to the complexity of aorta section anatomical structure, mesh Preceding conveying device still has more problem when bracket in conveying art.

By taking aortic disease as an example, aortic aneurysms or dissections often involve aorta ascendens, the arch of aorta and descending aorta extensively, Operation excision and reconstructing blood vessel are considerably complicated, and common treatment method is that the own ascending part of human body and bow portion are replaced by surgical implantation Lesion vessels.Traditional trunk operation (elephant trunk, ET) is while carrying out arch of aorta valve replacement by one section of people Work blood vessel (being commonly called as trunk) insertion descending aorta is very intracavitary to lower the difficulty that distal end is performed the operation again, is usually divided to two stage operations complete At.The operation of traditional trunk is since extracorporal circulatory system and Deep Hypothermia Circulatory Arrest can generate brain and spinal cord injury, embolism, poor arterial inflow, go out The related complications such as blood.

It clinically performs the operation at present frequently with bracket trunk, the structural principle of bracket trunk operation is as shown in Figure 1.Wherein, people Work blood vessel 110 connects bracket 130 in art by suture mouth 120, passes through conveying device under one-stage operation direct-view for bracket in art It in 130 implantation descending aortas 10 and discharges, by 130 proximal end sky film section of bracket in art, 110 distal end of artificial blood vessel and active after release Astillen or the vascular anastomosis for replacing bow portion.This bracket trunk operation combines the concept of trunk principle and intervention support blood vessel, It can be completed simultaneously through mid-sternal incision, it is advantageous that it can be anchored on the specified level of descending aortic aneurysm wall, promote trunk Thrombosis between blood vessel and tumor wall so avoids the second stage of hand that can be can be carried out due to the tumor in descending aorta advanced stage becomes or ruptures Art can simplify operation relative to the operation of traditional trunk, reduce complication.

Bracket is straight barrel type bracket in art shown in FIG. 1, there are problems that more difficult exact matching human vas branch, because And at present compared with being implanted into frequently with bracket in branching type art, aortopathy is carried out using bracket in branching type art and artificial blood vessel When becoming operation, often it need to be dissociated, blocked and be coincide to upper head arm branch vessel is bent, there are many important around the arch of aorta Institutional framework, including tracheae, oesophagus, nerve, ductus thoracicus etc., thus the free of head arm blood vessel is proposed by very high technology is wanted It asks, increases the difficulty of free bow top set's blood vessel.It proposes in the prior art (such as CN104873305A) using in branch's overlay film The intracavitary side for increasing flexible flake or fillable sacculus in the junction or branch's overlay film frame of bracket and main body artificial blood vessel Method blocks aorta vessel and arch of aorta top set blood vessel.But off-line will be solved using the occluding device of flexible flake needs Lateral edge doubling suture inner hole sequentially passes through outside the artificial lumen of vessels of main body, and when release easily causes solution off-line and tightens side branch stent Lead to side branch stent torsional deflection, long term causes to occlude.And the plugging device of the fillable sacculus of utilization, in addition to by side branch stent Outside whole section increases, also needs to carry out sacculus full and pumpback, operating time is caused to increase.Therefore it is carried out using bracket in art When aortic disease is performed the operation, how to make to get a clear view after placing branching type bracket with the suture of artificial blood vessel, it is difficult to reduce operation Degree and operating time is reduced, to improve the success rate and postoperative effect of operation, is still this field and needs what is solved important to ask Topic.

Utility model content

In order in open chest surgery is treated, make to place, the suture visual field of main body rack and artificial blood vessel are clear after bracket in art It is clear, it reduces operating difficulty and reduces operating time, increase the success rate and postoperative effect of aortic disease operation, this is practical new Type provides in a kind of art support system in stent conveying device and art.

One aspect according to the present utility model provides stent conveying device in a kind of art, for conveying and discharging point Bracket in branch type art, bracket includes main body rack and side branch stent, stent conveying device packet in the art in the branching type art The collateral liner, described for fettering for including the main body liner for being used to support the main body rack and being used to support the side branch stent The mantle of side branch stent and part is withdrawn, the collateral liner is hollow structure, and the part that withdraws can in the collateral liner Mobile, the mantle is connect after the tightening of the distal end of the collateral liner with the distal end for withdrawing part.

Optionally, the proximal end aperture of the collateral liner is less than distal end aperture.

Optionally, the part that withdraws includes withdrawing seal wire.

Optionally, the proximal end aperture of the collateral liner is greater than the diameter for withdrawing seal wire and is less than or equal to described return Remove the double diameter of seal wire.

Optionally, stent conveying device further includes control terminal and the support rod that connect with the control terminal in the art, institute It states main body liner to connect with the distal end of the support rod, the collateral liner is arranged on the support rod, and the support rod is Hollow tubular structure.

Optionally, stent conveying device further includes withdrawing track in the art, and the track that withdraws is through the support rod And the inside of the collateral liner being connected, and be arranged between the control terminal and the distal end of the collateral liner.

Optionally, the control terminal includes the first wire grip, and the proximal end for withdrawing part is connect with first wire grip.

Optionally, the control terminal further includes the second wire grip for discharging the main body rack.

Optionally, the control terminal further includes handle and the sliding block that is slidably arranged on the handle, the sliding block and institute Collateral liner connection is stated, to control the angle between the collateral liner and the support rod.

Optionally, the material of the collateral liner includes soft silica gel, rubber, nylon elastomer, low density polyethylene (LDPE), gathers At least one of ester, ultra high molecular polyethylene, stainless steel, NiTi；The material of the mantle include terylene, polytetrafluoroethylene (PTFE) and At least one of its derivative, polyethylene terephthalate and its derivative.

Another aspect according to the present utility model also provides support system in a kind of art, and support system includes in the art Stent conveying device in bracket and above-mentioned art in branching type art, bracket includes main body rack and collateral branch in the branching type art Frame, the main body rack are set in the outside of the main body liner of the conveying device, and the side branch stent is set in the art The outside of the collateral liner of stent conveying device, the side branch stent are tied to stent conveying device in the art before releasing Mantle in.

Optionally, bracket further includes the artificial blood being connected to and in communication with the proximal end of the main body rack in the branching type art Pipe.

Stent conveying device is for conveying and discharging bracket in branching type art, especially side in art provided by the utility model Branch bracket, stent conveying device includes the collateral liner for being used to support the side branch stent, for fettering the side in the art The mantle of branch bracket and part is withdrawn, the collateral liner is hollow structure, and described to withdraw part removable in the collateral liner Dynamic, the mantle is connect after the tightening of the distal end of the collateral liner with the distal end for withdrawing part.Utilize bracket in the art Conveying device has the advantage that

Firstly, setting withdraws part on a conveyor, and the distal end side of collateral liner be allowed to be used to fetter it is collateral The mantle of bracket connects, and after side branch stent is delivered to target position, the proximal end of side branch stent is first released, and mantle is covered on On the distal end of collateral liner and the side branch stent of part release, so that mantle, which is also used as branch's breaking member, prevents target The branch vessel of position is backflowed, and guarantees getting a clear view within the scope of stent procedure, and doctor is facilitated to carry out such as release main body rack, seam The operation such as artificial blood vessel is closed, shortens operating time, improves the success rate and postoperative effect of operation.

Secondly, withdraw a part of part and mantle as stent conveying device in art, in branching type art bracket release with And it can be blocked as needed using it during stent conveying device is recalled in art and the function of conducting target position branch vessel Can, blocking process does not need independent separate operations, and it is easy to operate, be conducive to shorten operating time.

Again, by withdrawing the linkage of part and mantle, side branch stent is proximally gradually discharged to distal end, this release side Formula can prevent side branch stent cripetura, and stent stenosis at a specified future date is avoided even to occlude.

Support system includes stent conveying device in bracket and above-mentioned art in branching type art in art provided by the utility model, Have the advantages that same or like with stent conveying device in above-mentioned art.

Detailed description of the invention

Fig. 1 is the structure principle chart of bracket trunk operation.

Fig. 2 is the schematic diagram of bracket in branching type art.

Fig. 3 is the schematic diagram of stent conveying device in the art of an embodiment of the present invention.

Fig. 4 is the enlarged diagram of collateral liner in stent conveying device in the art of an embodiment of the present invention.

Fig. 5 is the signal using collateral liner tightening state after assembling side branch stent of an embodiment of the present invention Figure.

Fig. 6 is the schematic diagram that stent conveying device blocks branch vessel in the art using an embodiment of the present invention.

Fig. 7 is the schematic diagram of support system in the art of an embodiment of the present invention.

Fig. 8 is the schematic diagram of support system release branching type bracket in the art using an embodiment of the present invention.

Fig. 9 is the schematic diagram of support system suture artificial blood vessel in the art using an embodiment of the present invention.

Description of symbols:

110,210- artificial blood vessel；120,220- sutures mouth；Bracket in 130- art；Bracket in 200- branching type art；230- Main body rack；240- side branch stent；10- descending aorta；

Stent conveying device in 300- art；The collateral liner of 310-；320- mantle；330- withdraws part；20- withdraws part and mantle Tie point；331- withdraws track；340- main body liner；341- main body target seeker；342- thread eye；350- control terminal；351- Handle；352- sliding block；The first wire grip of 353-；The second wire grip of 354-；360- support rod；Support system in 400- art.

Specific embodiment

Below in conjunction with the drawings and specific embodiments to support system in stent conveying device in the art of the utility model and art It is described in further detail.According to following explanation, will be become apparent from feature the advantages of the utility model.It should be noted that attached Figure is all made of very simplified form and using non-accurate ratio, only to convenient, lucidly aid illustration is originally practical new Type embodiment.

Fig. 2 is the schematic diagram of bracket in branching type art.Referring to Fig. 2, bracket 200 includes main body rack 230 in branching type art With side branch stent 240, main body rack 230 is sutured by suture mouth 220 and artificial blood vessel 210.It is with arch of aorta valve replacement Example needs for main body rack 230 to be implanted into descending aorta 10, and side branch stent 240 is implanted into left subclavian artery, because under left clavicle Artery position is deeper, and dissociating, dissection suture is difficult, and operating difficulty is big, and increase side branch stent 240 can be dissociated to avoid art middle reaches and be cutd open With the suture left subclavian artery time, operating difficulty is reduced, reduces operating time, reduces the free damage journey to surrounding tissue Degree.

In order to further solve using bracket is performed the operation in branching type art when the branch vessel that faces dissociate that difficulty is high, hand The problems such as art time is long, the utility model proposes stent conveying device in a kind of art and including bracket conveying dress in the art Support system in the art set, it is therefore an objective to which setting has the portion of branch's block function in the conveying device of bracket in branching type art Part, stent conveying device prevents branch vessel from backflowing during recall in bracket release and art in branching type art, guarantees Getting a clear view within the scope of stent procedure, facilitates doctor to operate, and shortens operating time, to improve the success rate and postoperative effect of operation Fruit.

Fig. 3 is the schematic diagram of stent conveying device in the art of an embodiment of the present invention.Fig. 4 is that the utility model one is real Apply the enlarged diagram of collateral liner in stent conveying device in the art of example.Referring to Figure 2 to Figure 4, in the utility model embodiment, Stent conveying device 300 is for conveying and discharging bracket 200 in branching type art in art, and bracket 200 includes in the branching type art Main body rack 230 and side branch stent 240, stent conveying device 300 includes being used to support the side branch stent 240 in the art Collateral liner 310, the mantle 320 for fettering the side branch stent 240 and part 330 is withdrawn, during the collateral liner 310 is Hollow structure, the part 330 that withdraws move in the collateral liner 310, and the mantle 320 is in the collateral liner 310 Distal end is connect after tightening with the distal end for withdrawing part 330.

Hereinafter, using bracket 200 in branching type art towards implantation descending aorta one end as distal end, far from implantation One end of descending aorta is as proximal end, correspondingly, using side branch stent 240 and 230 junction of main body rack as collateral liner 310 Proximal end, otherwise distal end as collateral liner 310.That is, one end close to delivery device body is collateral liner in Fig. 3 310 proximal end, one end far from delivery device body are the distal ends of collateral liner 310.

Stent conveying device 300 may also include main body liner 340 in above-mentioned art, and the main body liner 340 is used to support institute Main body rack 230 is stated, the distal end of main body liner 340 is provided with main body target seeker 341 and thread eye 342, the main body guiding First 341 distal end as stent conveying device 300 in art, surface is streamlined, convenient for bracket 200, In in conveying branches type art During conveying main body rack 230 to target position, one end of main body seal wire (not shown) penetrates lesion aorta and (such as drops Aorta) true chamber, the other end penetrates in thread eye 342, and then stent conveying device 300 is whole in art wears along main body seal wire The true chamber of lesion aorta (such as descending aorta) is crossed, and main body rack 230 is implanted into the very intracavitary of lesion aorta.Main body is led Leader 341 can be used the high molecular material with good biocompatibility and be made, such as low density polyethylene (LDPE) (LDFE) material, nylon The materials such as elastomer (Pebax) or other high molecular materials with same performance.

Using in above-mentioned art in 300 conveying branches type art of stent conveying device when bracket 200, the insertion master of main body liner 340 In body support frame 230, collateral liner 310 is inserted into side branch stent 240 or main body rack 230 is set in the outer of main body liner 340 Portion, side branch stent 240 are set in the outside of collateral liner 310.Constraint portion can be set outside bracket 200 in usual branching type art Part, for making bracket be attached to 310 outer surface of main body liner 340 and collateral liner under compressive forces, thus by Bracket 200 in branching type art is delivered to target position by stent conveying device 300 in art, for example, main body rack 230 is delivered to Descending aorta 10 it is intracavitary, and side branch stent 240 is delivered in left subclavian artery, is then unmuzzled portion in target position Part is to the compressing force of main body rack 230 and side branch stent 240, thus by the release of bracket 200 in branching type art in target position.

With continued reference to Fig. 2 and Fig. 3, in the present embodiment, stent conveying device 300 further includes 350 He of control terminal in the art The outside of the support rod 360 is arranged in the support rod 360 connecting with the control terminal 350, above-mentioned collateral liner 310.It is described Main body liner 340 is preferably flexible, to facilitate the main body liner 340 and collateral liner of stent conveying device 300 in adjustment art The construction of the target position to be discharged of bracket 200 in 310 relative position and angle, and matching branching type art.Support rod 360 It can be tubular structure in order to control terminal 350 and main body liner 340, collateral liner 310, main body rack 230 and collateral is arranged Connecting component between bracket 240.In some embodiments, support rod 360 is hollow tubular structure.

Control terminal 350 is controlled by operator, to control the position of collateral liner 310, bracket 200 in branching type art is defeated It is sent to the release that can control bracket 200 in branching type art by control terminal 350 up to operator behind target position.As shown in figure 3, In the art of the present embodiment in stent conveying device 300, control terminal 350 includes one handle 351,351 side of may be designed as of handle Just the shape that operator grasps, and can be connected to the inside of support rod 360, main body liner 340 and collateral liner 310, to set Specific control unit is set, the operation relevant to the implantation of bracket 200 in branching type art such as installed, transmitted, discharged.

Illustratively, in order to control the angle between the collateral liner 310 and the support rod 360, in the handle One sliding block 352 is slidably set on 351, is slided in the sliding slot on handle 351 by sliding block 352 so as to adjust the side Angle between branch liner 310 and main body liner 340 (or support rod).It can be for example, by between sliding block 352 and collateral liner 310 Link mechanism connection.

Referring to Fig. 4, in the present embodiment, stent conveying device 300 fetters side branch stent 240 using mantle 320 in art, defeated It serves when stating bracket 200 in branching type art, mantle 320 is located at outside collateral liner 310, to encase side branch stent 240.It is described soft The material of film 320 may include terylene, polytetrafluoroethylene (PTFE) (PTFE) and its derivative, polyethylene terephthalate (PET) And at least one of its derivative, the material of mantle is, for example, expanded PTFE in the present embodiment (expandedPTFE).After bracket 200 is transported to target position in branching type art, covered by releasing 320 pairs of mantle Side branch stent 240 constraint, then can by side branch stent 240 discharge corresponding intravascular.It should be noted that the present embodiment What is stressed is that stent conveying device conveys and discharges the process of bracket in branching type art in the art using the utility model In, how to prevent branch vessel from backflowing, facilitate doctor operate and shorten operating time the problems such as, but mantle also can be set in Other regions, to realize corresponding other function.Such as in a further embodiment, it also can be set outside main body liner 340 Another mantle is to encase main body rack 230.It is conveyed using bracket in mantle cladding branching type art, integral support can be increased Slickness prevent plowing from blood vessel, convenient for push bracket.

Fig. 5 is the signal using collateral liner tightening state after assembling side branch stent of an embodiment of the present invention Figure.Referring to Fig. 3 to Fig. 5, in the present embodiment, collateral liner 310 is hollow structure, hollow herein to refer to that collateral liner 310 is made For it is whole can break-through, for example, collateral 310 inside of liner can be entered from the distal end (proximal end) of collateral liner 310 and from close End (distal end) is pierced by, so that withdrawing the tie point 20 of part 330 and mantle 320 can be drawn by the proximal end of collateral liner 310, and then example It is such as connect with control terminal 350, so that withdrawing movement of the part 330 in collateral liner 310, (such as withdrawing part 330 as needed can Collateral liner 310 proximally and distally between movement) can be controlled by control terminal 350.Hereinafter, 330 direction of part will be withdrawn The front end when distal end of collateral liner 310 is mobile will withdraw the opposite with distal end of part 330 as the distal end for withdrawing part 330 End (or close to one end of control terminal) is as the proximal end for withdrawing part 330.

It is exemplary, before assembling above-mentioned side branch stent 240, mantle 320 is arranged outside collateral liner 310, with constraint The side branch stent 240 being assembled in outside collateral liner 310.In the present embodiment, mantle 320 is in the distal end of the collateral liner 310 It is connect after tightening (such as with collapsing no gap) with the distal end for withdrawing part 330.It withdraws part 330 and is located at collateral liner 310 Inside, and in collateral liner 310 move.When the distal direction for withdrawing part 330 towards separate collateral liner 310 is mobile, Can drive mantle 320 enter collateral liner 310 in, while mantle 320 close to collateral 310 proximal end side of liner part to The distal end of collateral liner 310 is mobile, so that side branch stent 240 can be proximally to distal end by gradually by the movement for withdrawing part 330 Release.This delivery mode from the near to the distant can prevent side branch stent cripetura, and stent stenosis at a specified future date is avoided even to occlude.

Using stent conveying device 300 in above-mentioned art by bracket 200 in branching type art be delivered to target position and discharge Process can be completed under the control of control terminal 350.Specifically, the control terminal 350 may include the first wire grip 353, described The one end of handle 351 far from the support rod 360 is for example arranged in one wire grip 353, and first wire grip 353 may pass through institute It states handle 351 to connect with the proximal end for withdrawing part 330, so as to by pulling first wire grip 353 to restrain described return Remove movement of the part 330 in collateral liner 310.Correspondingly, the control terminal 350 may also include for discharging aforementioned body bracket 230 the second wire grip 354, second wire grip 354 may also be arranged on the one end of handle 351 far from the support rod 360, Second wire grip 354, which specifically can be, is arranged in the separable components of the handle 351 far from 360 side of support rod, It is connect towards the distal end of main body liner 340 with the constraint component for fettering the outer main body rack 230 of main body liner 340, when second When wire grip 354 (or separable components) is directed away from the direction movement of handle 351, constraint component is released to main body rack 230 Constraint, to discharge main body rack 230.

Stent conveying device 300 not only can be with using the above-mentioned linkage for withdrawing part 330 and mantle 320 in the art of the present embodiment The release of bracket 200 in branching type art is completed, but also can be needed to hinder mantle 320 as branch's breaking member according to operation The blood flow for keeping off branch vessel, prevents from backflowing in art.Fig. 6 is that stent conveying device hinders in the art using an embodiment of the present invention The schematic diagram of disconnected branch vessel.Referring to 2 to Fig. 6, by after bracket 200 is delivered to target position in branching type art, utilization is above-mentioned Mantle 320 is as follows as the method that branch vessel blood flow of branch's breaking member to target position is blocked: when withdrawing part 330 Distal end towards the distal end far from collateral liner 310 direction it is mobile when, mantle 320 is located at collateral 310 proximal end side of liner Part is to the mobile a distance in the distal end of collateral liner 310 (or side branch stent 240), the only proximal end quilt of side branch stent 240 at this time Release, the side branch stent 240 that mantle 320 is partially released struts, and be covered on collateral liner 310 distal end and collateral branch (surface of the side branch stent 240 towards collateral 310 distal end of liner is continuously covered) on frame 240, blocks target position to have Branch's blood flow effect, achieve the effect that anti-backflow.

Using above-mentioned blocking-up method simultaneously to the branch vessel blood flow of target position during the release of side branch stent 240 When being blocked, mantle 320 improves the resistance of mantle 320 with the collateral liner 310 of the mobile abjection for withdrawing part 330 in order to prevent Effect is kept off, in the present embodiment, the proximal end aperture of the collateral liner 310 is preferably smaller than its distal end aperture, specifically, collateral liner 310 can be the structure that surrounds of side of horn-like structure either frustum, terrace with edge, but not limited to this, collateral liner 310 may be used also To have other rules or irregular shape, for example, collateral liner 310 also may include wavy surface.Collateral liner 310 Material may include the high scores such as soft silica gel, rubber, nylon elastomer, low density polyethylene (LDPE), polyester and ultra high molecular polyethylene Any one in sub- material, also may include any one in the metal materials such as stainless steel, NiTi, main body liner Material identical with collateral liner 310 may be selected in 340 material.It is appreciated that stent conveying device 300 is preferably by biology in art The good material production of compatibility.

In the present embodiment, part 330 is withdrawn in its distal end and connects mantle 320, so as to withdraw the same of mantle 320 by affecting When, realize the gradually release to side branch stent 240, while can backflow according to the blood vessel that operation needs to obstruct target position.Mantle 320 the collateral liner 310 distal end concentrate after parts and be located at collateral liner 310 in the distal end for withdrawing part 330 it Between can use the modes such as binding, detent, clamping and connect, or can separately be arranged between an intermediate connector by they Connection.For example, after being tightened by the way that mantle 320 to be located to the part of collateral 310 distal end side of liner with withdraw the distal end of part 330 Binding connection.

Withdrawing part 330 may include withdrawing seal wire, connecting line etc., also may include other transmissions or linkage unit, for example, Withdrawing part 330 also may include the components such as pulley, gear and conveyer belt.In the present embodiment, withdrawing part 330 includes one withdrawing and leading Silk, the diameter for withdrawing seal wire and length can be specifically chosen according to the purposes and overall structure of stent conveying device 300 in art. Specifically, the distal end for withdrawing seal wire can be preferably extended over the proximal end that mantle 320 connect, and withdraws seal wire to collateral liner 310 Outside extends to control terminal 350 through support rod 360, in order to which operator withdraws wire distal in side by the control of control terminal 350 Movement in branch liner 310.Mantle 320 is recycled by withdrawing seal wire for convenience and do not deviate from collateral liner 310, preferably just In case, the collateral liner 310 is sufficiently fine close to the part of 360 proximal end of support rod, can be easily by withdrawing seal wire.It can Choosing, the proximal end aperture of collateral liner 310 is greater than one times of diameter for withdrawing seal wire and withdraws seal wire less than or equal to described Double diameter.

In the art of the present embodiment stent conveying device 300 may also include for it is above-mentioned withdraw part 330 it is mobile withdraw track 331, the track 331 that withdraws is arranged through the inside of the support rod 360 and the collateral liner 310 being connected Between the control terminal 350 and the distal end of the collateral liner 310, grasped with limiting to withdraw the moving range of part 330 and improve Make precision.For example, to withdraw seal wire as when withdrawing part 330, can making to withdraw seal wire in collateral liner 310 and collateral liner It is moved between 310 proximal end and control terminal 350 along the track 331 that withdraws.Proximal end and control terminal for collateral liner 310 Part between 350, withdrawing track 331 can be set inside the tubular structure of support rod 360.

Bracket 200 in branching type art is assembled and discharged using stent conveying device 300 in above-mentioned art, is had following Advantage: it firstly, setting withdraws part 330 on stent conveying device 300 in art, and is allowed in the distal end side of collateral liner 310 It is connect with the mantle 320 for fettering side branch stent 240, after side branch stent 240 is delivered to target position, side branch stent 240 proximal end is first released, and mantle 320 is covered in the distal end of collateral liner 310 and the side branch stent 240 of part release, The branch vessel reflux of target position is prevented to which mantle 320 is also used as branch's breaking member, guarantees stent procedure range Interior gets a clear view, and facilitates doctor to carry out such as suture artificial blood vessel 210 (see Fig. 2) operation, shortens operating time, improves operation Success rate and postoperative effect；Secondly, withdrawing a part of part 330 and mantle 320 as stent conveying device 300 in art, In In branching type art bracket 200 release and art in stent conveying device 300 recall during can as needed using its blocking With the function of conducting target position branch vessel, the blocking and turn on process do not need independent separate operations, easy to operate, favorably In shortening operating time；Again, by withdrawing the linkage of part 330 and mantle 320, side branch stent 240 proximally to distal end by by It gradually discharges, this delivery mode can prevent 240 cripetura of side branch stent, and stent stenosis at a specified future date is avoided even to occlude.

The present embodiment further includes stent conveying device 300 and branching type in support system, including above-mentioned art in a kind of art Bracket 200 in art.Fig. 7 is the schematic diagram of support system in the art of an embodiment of the present invention.Referring to Fig. 2 to Fig. 7, this implementation In the art of example in support system 400, bracket 200 includes side branch stent 240,240 sets of the side branch stent in the branching type art It is located at the outside of the collateral liner 310 of stent conveying device 300 in the art, the side branch stent 240 is bound before releasing In the art in the mantle 320 of stent conveying device 300.In general, bracket 200 further includes main body rack in the branching type art 230 and the artificial blood vessel 210 that connect and communicate with the proximal end of the main body rack 230, the artificial blood vessel 210 be configured to It is set on the main body liner 340.

Bracket 200 can be overlay film frame in above-mentioned branching type art, specifically, main body rack 230 may include main body rack Ontology and the main body overlay film pipe (not shown) being covered on main body rack ontology, side branch stent 240 may include side branch stent sheet Body and the collateral overlay film pipe (not shown) being covered in side branch stent, in assembling, the mantle 320 in the present embodiment can be covered In the outer surface of collateral overlay film pipe, in another embodiment, the outer surface of main body overlay film pipe can also cover another mantle.

Below by taking arch of aorta valve replacement as an example, using stent conveying device 300 in the art of the present embodiment by above-mentioned art Middle support system 400 is transmitted to target position, discharges bracket 200 in branching type art therein and recall bracket conveying dress in art Setting 300 may include following operating process:

Firstly, preoperative firstly evaluate the arch of aorta and descending aorta bending state, adjusted according to descending aorta bending degree Main body liner 340 keeps main body liner 340 at an angle, to obtain corresponding matching curvature；

Then, left subclavian artery position is observed after aorta ascendens or arch of aorta notch, by handle 351 Sliding block 352 is moved forward and backward the angle between adjustment side branch stent 240 and main body rack 230；

Then, support system 400 in above-mentioned art is delivered to target position (or diseased region), more specifically, referring to Fig. 3 To Fig. 7, one end of main body seal wire is penetrated into the thread eye 342 in main body target seeker 341, by 400 edge of support system in above-mentioned art Main body seal wire is delivered to target position (being herein, for example, that descending aorta is intracavitary), and positions side branch stent 240 to branch vessel (this Place's e.g. left subclavian artery) in；

Then, start to discharge bracket 200 in branching type art, release sequence is main body support frame 230, artificial blood vessel 210 and side 240 proximal end of branch bracket more specifically referring to Fig. 3, Fig. 5 and Fig. 8, first passes through the second wire grip 354 release 230 He of main body rack Artificial blood vessel 210, then pull the seal wire that withdraws for withdrawing part 330 to make it from separate collateral liner 310 by the first wire grip 353 The direction of distal end is mobile, so that pause pulls the first wire grip 353 after the proximal end of side branch stent 240 is discharged；

Then, collateral liner 310 is kept, seal wire is withdrawn and withdraws that track 331 is motionless, withdraws other portions of conveying device Point, the branch vessel for placing side branch stent 240 at this time is blocked by mantle 320 is in sealed condition, without blood backflow such as Fig. 6 institute Show；

Then, Four branches aortic graft or other shapes of artificial blood vessel (i.e. artificial blood vessel 210) are covered and is withdrawing part 330 Withdraw seal wire outer ring, then carry out end to end anastomosis (or suture) with the artificial blood vessel of 230 proximal end of autologous vein and main body rack, Artificial blood vessel sutures with aorta ascendens and completes at this time, is seamed to from starting point 3-5 needle gage from rear stopping, as shown in Figure 9；

Then, fixed side branch stent 240 is motionless, by mantle 320 by withdrawing seal wire from being distally withdrawn into collateral liner 310 Interior, side branch stent 240 is proximally finished to being distally released；

Finally, collateral liner 310 is withdrawn from together with stent conveying device 300 in entire art, by remaining artificial blood vessel Operation stitching part terminates after 3-5 needle sutures.By bracket in implantation and artificial blood vessel, formd newly in diseased region Channel of blood flow, more specifically, can by tumor chamber completely cut off except blood circulation system, so that hemangioma wall is not subjected to blood pressure, from And knurl is avoided to rupture, reach therapeutic purposes.

Support system 400 includes stent conveying device 300 in above-mentioned art in the art of the present embodiment, is propped up in branching type art During the assembling of frame 200, implantation, release, it can make to place peripheral region (or the stent procedure area of branching type bracket 200 Domain) it gets a clear view, it is possible to reduce pull up time improves sewing effect, reduces suture time, so that open chest surgery is facilitated to treat, It reduces operating time, reduce operating difficulty, be conducive to the success rate and postoperative effect that improve open chest surgery.

It should be noted that be described in a progressive manner in the present embodiment, posterior structure emphasis description be with preceding Structure difference, related place mutually referring to.

Foregoing description is only the description to the utility model preferred embodiment, is not appointed to the utility model interest field What is limited, and anyone skilled in the art without departing from the spirit and scope of the utility model, may be by the disclosure above Methods and technical content possible variation and modification are made to technical solutions of the utility model, it is therefore, all without departing from this reality With the content of new technique scheme, any simple modification made by the above technical examples according to the technical essence of the present invention, Equivalent variations and modification belong to the protection scope of technical solutions of the utility model.

Claims (12)

1. stent conveying device in a kind of art, which is characterized in that for conveying and discharging bracket in branching type art, the branching type Bracket includes main body rack and side branch stent in art, and stent conveying device includes being used to support the main body rack in the art It main body liner and is used to support the collateral liner of the side branch stent, the mantle for fettering the side branch stent and withdraws Part, the collateral liner are hollow structure, and the part that withdraws moves in the collateral liner, and the mantle is described collateral It is connect after the distal end tightening of liner with the distal end for withdrawing part.

2. stent conveying device in art as described in claim 1, which is characterized in that the proximal end aperture of the collateral liner is less than Distal end aperture.

3. stent conveying device in art as claimed in claim 2, which is characterized in that the part that withdraws includes withdrawing seal wire.

4. stent conveying device in art as claimed in claim 3, which is characterized in that the proximal end aperture of the collateral liner is greater than The diameter for withdrawing seal wire and be less than or equal to the double diameter for withdrawing seal wire.

5. stent conveying device in art as described in claim 1, which is characterized in that stent conveying device further includes in the art Control terminal and the support rod connecting with the control terminal, the main body liner is connect with the distal end of the support rod, described collateral Liner is arranged on the support rod, and the support rod is hollow tubular structure.

6. stent conveying device in art as claimed in claim 5, which is characterized in that stent conveying device further includes in the art Track is withdrawn, the track that withdraws is arranged through the inside of the support rod and the collateral liner being connected in institute It states between control terminal and the distal end of the collateral liner.

7. stent conveying device in art as claimed in claim 5, which is characterized in that the control terminal includes the first wire grip, The proximal end for withdrawing part is connect with first wire grip.

8. stent conveying device in art as claimed in claim 5, which is characterized in that the control terminal further includes for discharging State the second wire grip of main body rack.

9. stent conveying device in art as claimed in claim 5, which is characterized in that the control terminal further includes handle and sliding Sliding block on the handle is set, and the sliding block is connect with the collateral liner, to control the collateral liner and the branch Angle between strut.

10. stent conveying device in art as described in any one of claim 1 to 9, which is characterized in that the material of the collateral liner Material is including in soft silica gel, rubber, nylon elastomer, low density polyethylene (LDPE), polyester, ultra high molecular polyethylene, stainless steel, NiTi One kind；The material of the mantle include terylene, polytetrafluoroethylene (PTFE) and its derivative, polyethylene terephthalate and it One of derivative.

11. support system in a kind of art, which is characterized in that support system includes bracket and such as right in branching type art in the art It is required that stent conveying device in 1 to 10 described in any item arts, bracket includes main body rack and collateral branch in the branching type art Frame, the main body rack are set in the outside of the main body liner of the conveying device, and the side branch stent is set in the art The outside of the collateral liner of stent conveying device, the side branch stent are tied to stent conveying device in the art before releasing Mantle in.

12. support system in art as claimed in claim 11, which is characterized in that bracket further includes and institute in the branching type art State the artificial blood vessel that the proximal end of main body rack is connected to and in communication with.