CN209136999U - Bracket, intervention medical device and intervention medical system - Google Patents

Abstract

The utility model provides a kind of bracket, intervention medical device and intervention medical system, and bracket therein can preferably assist embolization device in tumor, and can preferably adapt to vascular morphology, additionally it is possible to branch vessel be protected not blocked by embolization device etc..The bracket of the utility model is reticular structure, and the bracket includes the flat part of intermediate swells and both ends, and the maximum width of the swells is greater than the width of the flat part.The intervention medical device of the utility model includes push rod, imports sheath and the bracket, one end of the bracket is connected with push rod, the bracket and the push rod are assembled in the importing sheath, and the intervention medical system includes delivery conduit, embolization device and the intervention medical device, the bracket is used to support the embolization device, and the delivery conduit is for conveying the embolization device and the bracket.

Description

Bracket, intervention medical device and intervention medical system

Technical field

The utility model belongs to field of medical device, in particular to a kind of bracket, intervention medical device and intervention medical treatment System.

Background technique

Vascular wall, especially arterial blood tube wall are easy because local patholoic change causes vascular malformation, and outside bulging forms disease Rationality expansion, this is commonly referred to as aneurysm.Entocranial artery is aneurysm occurrence of location, intracranial aneurysm be a kind of high pathogenicity rate and The cranial vascular disease of high disability rate is the main reason for causing subarachnoid hemorrhage.

Currently, generally having been received using embolization device treatment vascular malformation, it is acute interior to change blood vessel by embolization device Chamber blood flow forms embolus to close knurl, controls angiorrbagia, blood is prevented to flow into cavity, reduces the supply of knurl blood flow, comes Treat blood vessel class aneurysm, especially intracranial aneurysm.

It is clinically used for treating that aneurysmal embolization device is various, one of which is proved to effective and is widely used Technology is just described using that can cause miniature winding circle (spring ring), such as United States Patent (USP) US4994069 of thrombosis etc. The miniature winding circle made of biocompatible metal or polymer is for treating aneurysm.But aneurysm shape is different, no Only spring ring filling not exclusively easily leads to aneurysm and leads to again, and spring ring is excessively clogged and is also easy to cause aneurysm rupture, very It will affect artery blood flow etc. as the prominent tumor neck of spring ring.The presence of these problems makes this embolization device in clinical application It has some limitations.

Therefore, the intervention therapeutic apparatus such as bracket or sacculus can be used to auxiliary embolization device by favor to treat cranium Internal aneurysm.For example, Chinese patent CN104487024, United States Patent (USP) US7037330 etc., which are just described, can be used to secondary spring Circle treats aneurysmal bracket.For these brackets through release at tumor neck mouth, the release of support spring circle prevents spring ring from charging into load Tumor artery.Compared with sacculus, the blood of parent artery will not only be hindered by assisting embolization device to treat aneurysm by implantation bracket Stream, and could be applicable to wide neck aneurysm, the blood vessel that interventional therapy device can not be withdrawn, merge hemadostewnosis illness and Situations such as blood vessel curvature is abnormal.

But existing bracket, such as the engraving type nickel titanium stents introduced in United States Patent (USP) US7695507, US7037331 In, it is fixed between mesh and mesh at open loop structure or intersection point, at the tortuous blood vessel of encephalic, Yi Fasheng " bending ", or be bent Place's release forms " fish scale " shape protrusion, can not paste blood vessel very well.Moreover introduced in United States Patent (USP) US9439791 Weaving type NiTi can paste blood vessel, but the radial support at tumor neck mouth from swollen bracket well at vascular bending Power is smaller, readily occurs in spring ring and fills up the case where situation lower bracket can not be opened, and doctor needs repeatedly push-and-pull adjustment branch Form of the frame at tumor neck mouth be easy to cause blood vessel impaired, causes the formation of intraarterial thrombus.

Utility model content

In view of this, the present invention provides a kind of bracket, intervention medical device and intervention medical system, branch therein Frame can more effectively stop and support the embolization device in tumor, and vascular wall can be preferably bonded at vascular bending, also Branch vessel can be protected not blocked by embolization device, it may also be used for treatment branch type hemangioma.

One aspect according to the present utility model provides a kind of bracket, is reticular structure, wherein the rack body Flat part including intermediate swells and both ends, the maximum width of the swells are greater than the width of the flat part.

Other side according to the present utility model, provides a kind of intervention medical device, including push rod, import sheath with And the bracket, one end of the bracket are connected with the push rod, and the bracket and the push rod are assembled on institute It states and imports in sheath.

Still another aspect according to the present utility model provides a kind of intervention medical system, including delivery conduit, embolism dress It sets and the intervention medical device, and the bracket of the intervention medical device is used to support the embolization device, institute Delivery conduit is stated for conveying the embolization device and the bracket.

Further, the swells and the flat part include several mesh, the pitch of the mesh of the swells Less than or equal to the pitch of the mesh of the flat part.

Further, the pitch of the mesh of the swells is less than 100mm.

Further, the pitch of the mesh of the swells is between 2mm-72mm.

Further, the pitch of the mesh of the flat part is between 3mm-200mm.

Further, the pitch of the mesh of the flat part is between 3mm-108mm.

Further, the swells includes several mesh, and the minimum dimension of the mesh of the swells is greater than a conveying The outer diameter of conduit.

Further, the minimum dimension of the mesh of the swells is greater than 560 μm.

Further, at it, entirely circumferentially or partially circumferentially upper outwardly convex forms the swells to the bracket.

Further, the bulge height of the swells in the circumferential is not identical.

Further, the cross section of the swells is rule or irregular geometry.

Further, the maximum width of the swells is 1.01 times~2.0 times of the width of the flat part.

Further, the maximum width of the swells is 1.1 times~1.5 times of the width of the flat part.

Further, the width of the flat part is greater than 1.0mm.

Further, the width of the flat part is between 2.0mm~7.0mm.

Further, the maximum width of the swells is greater than 1.5mm.

Further, the maximum width of the swells is between 2.0mm~8.0mm.

Further, the longitudinal section of the swells is rule or irregular geometry.

Further, the longitudinal section is round, oval, trapezoidal, rectangle or diamond shape.

Further, the length of two flat parts is not identical.

Further, the length of the swells is the 30%~50% of the length of the bracket.

Further, the swells and the flat part are braiding structure, and the swells and the flat part For different braiding structures.

Further, the embolization device is at least one spring structure.

In turn, for technical solution provided by the utility model, the bracket and its intervention medical device and intervention medical treatment System has the following beneficial effects:

The first, the bracket of the utility model can be used for the adjuvant treatment of hemangioma (including but not limited to encephalic angioma), tool Body, the swells of bracket can be placed at tumor neck mouth, stop and support the embolization device in tumor；Compared with prior art, institute Stronger radial support power can be provided at tumor neck mouth by stating swells, so that reducing bracket is carrying the endovascular form tune of tumor It is whole, it reduces and pushes and pulls damage caused by vascular wall, while bracket can also be enhanced to the moulding effect at tumor neck mouth, more effective branch The embolization device in tumor is supportted, the healing of patient is accelerated.

The second, the described swells can also preferably attach blood vessel at vascular bending, reduce the general of thrombus generation Rate, the tumor neck mouth simultaneously because swells can advance by leaps and bounds, accordingly it is possible to prevent the embolization device in tumor blocks branch's blood near tumor Pipe guarantees the unimpeded of branch vessel blood flow conveying；

Third, the utility model bracket can also assist embolization device (such as spring ring, braiding structure embolus) treat Branch type hemangioma reduces the usage amount of bracket with this, reduces the operation difficulty of doctor；

4th, in a preferred embodiment, the pitch of the mesh of the swells is less than or equal to the mesh of flat part Pitch reduces the blood flow flowed into tumor, accelerates the embolism of embolization device to block hemangioma by the mesh of fine pith, It also will not influence blood flow simultaneously and enter neighbouring tiny branch vessel；The minimum dimension of the mesh of the swells is yet more preferably greater than The outer diameter of delivery conduit, facilitates embolization device and passes through mesh by delivery conduit to enter in tumor；

5th, in a preferred embodiment, the rack body forms the swells along entire all outwardly convexs, such as This, can without dead angle operate bracket with 360 °, be allowed to rapid alignment hemangioma, reduce the operation difficulty of doctor, promote operation effect Rate；

6th, in a preferred embodiment, the bulge height of the swells in the circumferential can not be identical, so that heaving The higher position alignment tumor neck of degree, significantly more efficient support embolization device.

7th, since the bracket of the utility model has guiding role for blood flow, guidance blood flow is several along blood flow Do not enter in hemangioma, therefore, the bracket of the utility model can also be individually used for angiomatous treatment, without additionally adopting Use embolization device.

Detailed description of the invention

Attached drawing is not constituteed improper limits to the present invention for more fully understanding the utility model.Wherein:

Fig. 1 is the structural schematic diagram of the bracket in an embodiment of the present invention, and wherein the longitudinal section of swells is ellipse Shape；

Fig. 2 is the structural schematic diagram of the bracket in another embodiment of the utility model, and wherein the longitudinal section of swells is length It is rectangular；

Fig. 3 is the structural schematic diagram of the bracket in another embodiment of the utility model, and wherein the longitudinal section of swells is water chestnut Shape；

Fig. 4 a be in the utility model embodiment by choose weave in a manner of a pressure one made of bracket partial schematic diagram；

Fig. 4 b be in the utility model embodiment by choose weave in a manner of two pressures two made of bracket partial schematic diagram；

Fig. 4 c be in the utility model embodiment by choose weave in a manner of a pressure two made of bracket partial schematic diagram；

Fig. 4 d is the partial schematic diagram of bracket made of weaving in such a way that hook is drawn in the utility model embodiment；

Fig. 5 a is the structural schematic diagram in the utility model embodiment with the bracket of opening braiding periphery；

Fig. 5 b is the structural schematic diagram for the bracket that the utility model embodiment split shed is set as flaring；

Fig. 5 c is the structural schematic diagram for the bracket that an opening is set as slope shape in the utility model embodiment；

Fig. 6 a is that delivery conduit passes through the schematic diagram that bracket enters hemangioma release spring circle in the utility model embodiment；

Fig. 6 b is that bracket in intravascular release and supports the schematic diagram of tumor inner spring circle in the utility model embodiment；

Fig. 6 c is that delivery conduit is sandwiched between bracket and vascular wall into hemangioma release bullet in the utility model embodiment The schematic diagram of spring coil；

Fig. 7 a is the schematic diagram that bracket is bonded vascular wall at vascular bending in the utility model embodiment；

Fig. 7 b is the angiomatous schematic diagram of stent in the treatment branch type in the utility model embodiment；

Fig. 7 c is the existing angiomatous schematic diagram of stent in the treatment branch type in the utility model embodiment；

Fig. 7 d is the schematic diagram that spring ring blocks branch vessel under the support of existing bracket in the utility model embodiment；

Fig. 7 e is that spring ring protects branch vessel under the bracket support of the utility model in the utility model embodiment Schematic diagram；

Fig. 8 a is the schematic diagram for having the bracket there are two flat part different in size in the utility model embodiment；

Fig. 8 b is the schematic diagram that bracket enters the different vessel support spring ring of two diameters in the utility model embodiment.

In figure:

Bracket -1,1 ', H, flat part -2, swells -3, blood vessel -4, hemangioma -5, branch vessel -6, opening -11,12, 13,14,15,16,17,18；

Spring ring -20, delivery conduit -30.

Specific embodiment

Inventor is the study found that existing for assisting encephalic embolization device (such as spring ring, braiding structure embolus) Bracket, the especially bracket of laser engraving class, at the tortuous blood vessel of encephalic, Yi Fasheng " bending ", or released at vascular bending It puts to form " fish scale " shape protrusion, blood vessel can not be pasted very well, influence embolization effect.In addition, for existing braiding class Bracket, although can preferably paste blood vessel at vascular bending, radial support power is smaller at tumor neck mouth, is easy There is a situation where filling up situation lower bracket in embolization device not opening, and doctor needs repeatedly push-and-pull to adjust bracket in tumor neck Form at mouthful be easy to cause blood vessel impaired, causes the formation of Intravascular Thrombus.

Therefore, the utility model proposes a kind of brackets, can be used for the interventional therapy of secondary vessel tumor, are netted knot Structure, and the bracket includes the flat part of intermediate swells and both ends, wherein the maximum width of the swells is greater than institute The width of flat part is stated, the above-mentioned problems in the prior art or other problems are solved with this.

Below in conjunction with attached drawing and specific embodiment to the utility model proposes bracket be described in further detail.According to Illustrate below, will be become apparent from feature the advantages of the utility model.It should be noted that attached drawing be all made of very simplified form and Non-accurate ratio is used, only to convenient, lucidly aid illustration the utility model embodiment purpose.

As used in this specification, singular "a", "an" and "the" includes plural reference, unless interior In addition appearance explicitly points out outer.It is as used in this specification, term "or" be usually to include the meaning of "and/or" and into Enforcement, in addition in addition non-content explicitly points out.As used in this specification, term " longitudinal direction ", " axial direction " are usual Refer to the axis direction for being parallel to bracket, " transverse direction ", " radial direction " typically refer to the axis direction perpendicular to bracket, and " circumferential direction " is usual Refer to the circumferencial direction centered on the axis of bracket.As used in this specification, " length " is typically referred to along bracket The distance of axis direction, " width " typically refers to the distance for the point-to-point transmission being located on bracket periphery, and the line of the two o'clock passes through And perpendicular to the axis of bracket.

Fig. 1 is the structural schematic diagram of the bracket in the utility model embodiment, as shown in Figure 1, a kind of bracket 1, is netted Structure, and the bracket 1 includes two flat parts 2 and the swells 3 between two flat parts 2.The swells 3 Maximum width (preferably at most outer diameter) be greater than two flat parts 2 width (preferably outer diameter).In addition, each flat part 2 It is preferably configured to prismatic cylindrical body, and the diameter of two flat parts 2 is equal.In the utility model, to two flat parts 2 Width do not limit specifically, the width of the two both can be equal, can also be unequal.

When clinical application, the non-treatment section that two flat parts 2 are placed in blood vessel carrys out anchor supports, prevents bracket sliding It falls, while the swells 3 can be directed at embolization device (such as spring ring for being placed at angiomatous neck mouth and supporting in tumor 20, braiding structure embolus etc.).In turn, by using bracket provided in this embodiment, following benefit can be obtained:

Firstly, the situation according to Fig. 6 b, when the present embodiment bracket 1 in carry discharged in tumor blood vessel 4 after, swells 3 can position at the neck mouth of hemangioma 5, to stop simultaneously support spring circle 20；Moreover, because swells 3 can also advance by leaps and bounds Tumor neck mouth, therefore, the problems such as can effectively prevent the prominent tumor neck of spring ring 20 and influence the conveying of intravascular blood flow, to reduce The probability that complication occurs；

Secondly, as shown in Figure 7a, the swells 3 can also preferably attach blood vessel at vascular bending, and Enough radial support power is provided at tumor neck mouth, to reduce the probability of thrombus generation, but also bracket 1 can be reduced and carrying tumor Experiment material in blood vessel 4, reduce caused by vascular wall push and pull damage, while can also enhance bracket 1 to tumor neck mouth at Moulding effect, the more effective spring ring 20 supported in tumor, to accelerate the healing of patient；

Moreover as shown in Figure 7b, when hemangioma 5 is located at the bifurcated mouth of blood vessel 4, the bracket 1 of the present embodiment can also be assisted Spring ring 20 treats the hemangioma 5 of branch type, and the usage amount of bracket 1 is reduced with this, reduces the operation difficulty of doctor；That is, this reality The treatment of the hemangioma 5 of branch type is applicable to novel bracket 1；As shown in Figure 7 c, in the prior art, in treatment bifurcated When type hemangioma, the spring ring 20 at tumor neck mouth is supported by two brackets 1 ', such mode is be easy to cause in tumor Or the occlusion of tumor blood vessel 4 or perforation are carried, the incidence of compared to one bracket, thrombus is high, and the difficulty for conveying multiple brackets is big, And it is easy to appear bracket 1 ' and is not easy the problem of opening in vascular bending section.Conversely, as shown in Figure 7b, when the branch of the utility model For frame 1 in the curved blood vessel section release of branch type hemangioma 5, the swells 3 can play branch to spring ring 20 at tumor neck mouth Support effect, and need to only use bracket 1 can support spring circle 20, to prevent spring ring 20 from falling, but also can Overcome the angiomatous aforementioned drawback of existing traditional treatment branch type.

In addition, as shown in figure 7d, the branch vessel 6 if the existing not set swells of bracket H, near hemangioma 5 (such as the region indicated at A) is easily blocked by spring ring 20, to influence the blood flow conveying of branch vessel 6；Conversely, such as Fig. 7 e institute Show, if swells 3 is placed at the neck mouth of hemangioma 5, the branch vessel 6 near hemangioma can be prevented (such as A institute in figure The region of instruction) it is closed by spring ring 20, it is accordingly possible to ensure the conveying of branch vessel blood flow is unimpeded.

Further, the utility model does not limit the shape of the longitudinal section of swells 3 specifically, and longitudinal section here is It is parallel to the upward section of support shaft.

In one embodiment, as shown in Figure 1, the longitudinal section of the swells 3 is ellipse；In another embodiment In, as shown in Fig. 2, the longitudinal section of the swells 3 can also be rectangle；In other one embodiment, as shown in figure 3, The longitudinal section of the swells 3 may be diamond shape.But the shape of the longitudinal section of the swells 3 is not limited to enumerate herein Shape, for example, geometry that can also be regular for round, trapezoidal, rectangular or other polygons etc., alternatively, can also be with For irregular geometry.In the utility model, the shape of the longitudinal section of swells 3 can be selected according to practical illness, is pushed away It recommends as the geometry of rule, it is ensured that uniform force, and operation also facilitates, still, for specific position or special shape Hemangioma 5, can use random geometry, reach better therapeutic effect.For example, the blood vessel in especially tortuous position Tumor 5 then may cause the morphological inhomogeneity of tumor neck mouth according to the bracket 1 of regular shape, it is therefore possible to use irregular shape The bracket 1 of shape solves the problems, such as this.

Further, the profile of the longitudinal section of the swells 3 can be smooth camber line, straight line or wave etc., that is, exist In the axial direction of bracket, the width of the swells 3 can be remained unchanged, or be incremented by from both ends to centre, or change periodically.

Further, the utility model does not also limit the shape of the cross section of swells 3 specifically, cross section here Section i.e. upward perpendicular to support shaft.The shape of the cross section of the swells 3 can be the geometry of rule, can also be with For irregular geometry.It is preferred that the height heaved outward on same circumferential direction (such as same circumference) of the swells 3 not phase Together, the shape of the cross section of swells 3 is not limited to regular geometry at this time, naturally it is also possible to be irregular geometric form Shape.As a result, when being implanted into bracket, the higher regional alignment hemangioma neck of degree can will be heaved in swells 3, with more efficient Support spring ring 20.Similarly, the shape that the cross section of swells 3 can be selected according to practical illness is recommended as the several of rule What shape, it is ensured that uniform force, and operation also facilitates still, can be with for the hemangioma of specific position or special shape Using random geometry, reach better therapeutic effect.For example, the hemangioma in especially tortuous position, according to rule The bracket 1 of shape, then may cause the morphological inhomogeneity of tumor neck mouth, it is therefore possible to use the bracket 1 of irregular shape solves The problem.

In an exemplary operation, the bracket 1 forms described in its entire circumferential direction or partially circumferentially upper outwardly convex Swells 3, such as the same circular cross section, partial contour or entire profile of the swells 3 on its circumference Profile outwardly convex relative to flat part 2.For from effect, recommend the bracket 1 outwardly convex shape throughout the circumferential At the swells 3, bracket 1 can without dead angle be operated with 360 °, be allowed to rapid alignment hemangioma 5, the operation for reducing doctor is difficult Degree promotes operating efficiency.

Further, the bracket 1 is preferably braiding structure, such as can be woven by 8 to 256 braided wires, is preferably compiled Silk is knitted between 12~64.The material of braided wires can be but be not limited to Nitinol, cochrome, stainless steel, no The materials such as radiopaque materials, macromolecular fibre can also be the combination of these materials.The material of the bracket 1 can be these One of material, is also possible to the combination of these materials, and the material of the preferably described bracket 1 at least contains radiopaque material. Radiopaque material includes but is not limited to the alloy for being platinum, iridium, tantalum and previous materials.

In an exemplary preparation method, braided wires can be made of single radiopaque material, alternatively, braiding The external of silk wraps up the materials such as Nitinol, cobalt chromium, while internal is the plug made of radiopaque material；It or is to compile The outside for knitting silk is enclosed with radiopaque material, while internal for by the composite wood of Nitinol, cobalt chromium, stainless steel or these materials Plug made of expecting.The cross section of braided wires include but is not limited to be it is round, can also be rectangular, trapezoidal, triangle, cross Shape, trough of belt degree of lip-rounding etc..The thickness or diameter of braided wires can be greater than 20 μm, preferably between 30~80 μm.

In the present embodiment, the bracket 1 can be woven by the braided wires of different-thickness or diameter, such as utilize smaller thickness Degree or the braided wires and larger thickness of diameter or another braided wires of diameter weave together, to be made suitable with required radial direction The bracket 1 of answering property and supportive, while being also convenient for bracket and being released from the pipe sheath of small diameter and be still capable of self-expanding to design Size.Wherein, bracket 1 or institute are knitted to form in a manner of choosing a pressure one shown in Fig. 4 a using cross one another braided wires Stating bracket 1 can also be woven by way of choosing two pressures two shown in Fig. 4 b, or to choose the side of a pressure two shown in Fig. 4 c Formula weaves, and is also possible to the mode of mixed weaving to prepare the bracket 1 jointly.In addition to this, as shown in figure 4d, phase The braided wires mutually intersected can also be prepared into hook arrangement in such a way that mutual hook is drawn, to form the bracket 1.Here, originally Utility model is not particularly limited the preparation method of bracket.One Exemplary Methods are as follows: with same form The bracket 1 is directly knitted to form on mandrel, either, in the upper mould moulding with same form at the bracket 1.? In another Exemplary Methods: above-mentioned different weaving manner can be used and weave the swells 3 that the bracket 1 is made respectively With flat part 2, to adapt to different vascular morphology sizes, the mode chosen two pressures two weave as described in swells 3, and to choose a pressure Two mode weaves described flat part 2 etc..In short, the weaving manner of the swells 3 and flat part 2 can not identical or phase Together.

In the present embodiment, the reticular structure of the bracket 1 is by heat treatment shaping, to realize the swells 3 and straight The external pre- moulding in portion 2.In this way, a step discharges the push-and-pull adjustment avoided in blood vessel 6 in place when discharging the bracket 1 It is damaged caused by vascular wall, reduces the damage to vascular wall, while bracket 1 can also enhanced, the moulding at tumor neck mouth is imitated Fruit, the more effective embolization device supported in tumor.

In the present embodiment, the bracket 1 has two opposite openings, and any one opening can have closing or opening Braiding periphery.

As shown in Figure 5 a, in the first embodiment, the bracket 1 has opposite two openings 11,12 (that is, two is straight The end in portion 2), and this two openings 11,12 all have an open braiding periphery, i.e. two braided wires are intersected in opening But it is not connected to and forms an open braiding structure.Such opening design, reduces the manufacture difficulty of bracket.

As shown in Figure 1, in a second embodiment, the bracket 1 has two opposite openings 13,14, and this two are opened Mouth 13,14 all has a closed braiding periphery, that is, two braided wires are in opening intersection and connect and form one and close Braiding periphery.Compared to open braiding periphery, the manufacture craft of closed braiding periphery is increasingly complex, and structural support is more By force.

In addition, the shape of the opening of the bracket 1 can also multiplicity.As shown in Figure 5 b, the bracket 1 has opposite two A opening 15,16, this two openings 15,16 are expanded outwardly in flaring shape.Compared to the structure (i.e. cylindrical) not being flared, expand Mouth can increase the expansionary force and anchoring ability of bracket.In addition, as shown in Figure 5 c, the bracket 1 can also have another two openings 17,18, and one of opening 17 is in slope shape, another opening 18 is designed to general cylinder.Here, slope is convenient for The recovery processing of bracket, with the recuperability of lifting bracket.Further, two openings of the bracket 1 can also be slope shape Shape or one be flaring simultaneously another be slope shape, or, one be flaring and another be cylinder.Moreover, opening Shape be not associated with the peripheral structure of opening, that is, flaring or slope can also be made in open braiding periphery.

Referring next to Fig. 6 a and Fig. 6 b, in clinical application, the spring ring 20 usually by a delivery conduit 30 by its It is delivered in hemangioma 5.In a unrestricted operation, the delivery conduit 30 is reached in a manner of passing through swells 3 Hemangioma 5 (refering to Fig. 6 a), for this purpose, the minimum dimension of the mesh of the swells 3 need to be greater than the outer diameter of delivery conduit 30, i.e. net The distance of the most narrow place point-to-point transmission in hole is greater than the outer diameter of delivery conduit 30.The drum (is passed through in the distal end of the delivery conduit 30 Play one end of the mesh in portion 3) outer diameter be generally 560 μm, therefore, the minimum dimension of the mesh of the swells 3 is greater than 560 μm ?.In another unrestricted operation, as fig. 6 c, the delivery conduit 30 is sandwiched between bracket 1 and vascular wall and releases It puts embolization device (such as spring ring 20), which is also known as " Jialing " technology.

In practice, the swells 3 includes several mesh.In order to realize that better therapeutic effect, the swells 3 are surfed the Internet The pitch in hole is preferably provided as being less than or equal to the pitch of mesh on flat part 2, to pass through the net of fine pith in swells 3 Hole blocks hemangioma, supports embolization device (such as spring ring 20), reduces the blood flow flowed into tumor, the bolt of acceleration spring circle 20 Plug, while also will not influence blood flow and entering neighbouring tiny branch vessel.In an operable scheme, on the flat part 2 Mesh pitch preferably between 3.0mm~200mm, and be more preferably between 3.0mm~108mm, the swells 3 The pitch of mesh is preferably smaller than 100mm, is more preferably between 2.0mm~72mm.Mesh within the scope of this can play blood flow To guiding role, impact of the blood flow to knurl is reduced.The definition of pitch is the universally recognized meaning of those skilled in the art, specifically , it is that braided wires recycle one week around braiding mandrel, the distance that braided wires are moved along the axial direction of bracket.

Further, according to the actual size of blood vessel, the width (preferably outer diameter) of the flat part 2 is preferably greater than 1mm, more excellent Selected introductions are between 2.0mm~7.0mm.The maximum width (preferably outer diameter) of the swells 3 is preferably the 1.01 of 2 width of flat part It~2.0 times, is more preferably between 1.1~1.5 times.In practice, the maximum width of the swells 3 can be greater than 1.5mm, preferably Between 2.0mm~8.0mm.

Further, the length of the swells 3 is less than the overall length of bracket, preferably the 30%~50% of the overall length of bracket. The length of two flat parts 2 can be identical, alternatively, as shown in Figure 8 a, the length of two flat parts 2 can not also phase Together, when the length of flat part 2 is inconsistent, it is ensured that in the case that load tumor blood vessel diameter is inhomogenous, the bracket at hemangioma both ends Length will not be too long or too short.As shown in Figure 8 b, such as: when the blood vessel diameter at hemangioma both ends difference is larger, be located at small straight Length of the flat part 2 under no restrained condition at diameter blood vessel can be shorter than another flat part 2, be guaranteed with this two straight in the blood vessel The extension consistency in portion 2.In this way, the flat part 2 at small-diameter intravascular will not influence branch vessel because too long, and major diameter blood Flat part 2 at pipe will not influence stent anchors because too short, and especially at vascular bending, flat part 2 is too short to be may cause Bracket slides, or causes mount proximal end to enter in knurl when adjusting tumor neck mouth form, influences to treat.

In addition, the utility model embodiment additionally provides a kind of intervention medical device comprising the bracket 1 of the present embodiment, And the intervention medical device further includes push rod and imports sheath, one end of the bracket 1 is used to be connected with the push rod, To push bracket 1, realize the conveying and release of bracket 1, and the bracket 1 and push rod are assembled on and import in sheath, so as to The bracket 1 is stored and transported before delivering into blood vessel.For this purpose, embolization device can be assisted to realize blood by intervening medical device The interventional therapy of tuberculation.

In addition, the utility model embodiment additionally provides a kind of intervention medical system comprising delivery conduit, the intervention Medical device and the embolization device, the bracket 1 are used to support the embolization device, and the delivery conduit is for conveying institute State embolization device and the bracket 1.Specifically, the proximal end of the delivery conduit is connected with the distal end for importing sheath, and the conveying Conduit enters blood vessel, pushes bracket 1 into delivery conduit by push rod and reaches at hemangioma.

Further, the embolization device includes but is not limited to the spring structures such as spring ring, can also be braiding structure embolism Object.Further, the embolization device can be a spring structure, or multiple spring structures.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want Seek the protection scope of book.

Claims (16)

1. a kind of bracket is reticular structure, which is characterized in that the bracket includes the straight of intermediate swells and both ends Portion, the maximum width of the swells are greater than the width of the flat part；The swells and the flat part include several Mesh, the pitch of the mesh of the swells are less than or equal to the pitch of the mesh of the flat part.

2. bracket as described in claim 1, which is characterized in that the pitch of the mesh of the swells is less than 100mm, or, institute The pitch of the mesh of swells is stated between 2mm-72mm.

3. bracket as described in claim 1, which is characterized in that the pitch of the mesh of the flat part between 3mm-200mm, Or, the pitch of the mesh of the flat part is between 3mm-108mm.

4. bracket as described in claim 1, which is characterized in that the swells includes several mesh, the net of the swells The minimum dimension in hole is greater than the outer diameter of a delivery conduit.

5. bracket as claimed in claim 4, which is characterized in that the minimum dimension of the mesh of the swells is greater than 560 μm.

6. bracket as described in claim 1, which is characterized in that the bracket is in its entirely circumferential direction or partially circumferentially upper convex It rises and forms the swells.

7. bracket as claimed in claim 6, which is characterized in that the bulge height of the swells in the circumferential is not identical.

8. bracket as described in claim 1, which is characterized in that the cross section of the swells is rule or irregular geometry Shape.

9. bracket as described in claim 1, which is characterized in that the longitudinal section of the swells is rule or irregular geometry Shape.

10. bracket as described in claim 1, which is characterized in that the maximum width of the swells is the width of the flat part 1.01 times~2.0 times of degree, or, the maximum width of the swells is 1.1 times~1.5 times of the width of the flat part.

11. bracket as described in claim 1, which is characterized in that the length of two flat parts is not identical.

12. bracket as described in claim 1, which is characterized in that the length of the swells is the length of the bracket 30%~50%.

13. bracket as described in claim 1, which is characterized in that the swells and the flat part are braiding structure, and The swells and the flat part are different braiding structures.

14. a kind of intervention medical device, which is characterized in that including any in push rod, importing sheath and such as claim 1-13 Bracket described in, one end of the bracket are connected with the push rod, and the bracket and the push rod are assembled on institute It states and imports in sheath.

15. a kind of intervention medical system, which is characterized in that including delivery conduit, embolization device and as claimed in claim 14 Intervention medical device, wherein it is described intervention medical device the bracket be used to support the embolization device, the conveying is led Pipe is for conveying the embolization device and the bracket.

16. intervention medical system as claimed in claim 15, which is characterized in that the embolization device is at least one spring knot Structure.