技术领域technical field
本实用新型涉及微创医疗器械领域，特别涉及介入血管内部的一种无缝支架。The utility model relates to the field of minimally invasive medical instruments, in particular to a seamless bracket intervening inside blood vessels.
背景技术Background technique
周边血管手术是传统的治疗周边血管狭窄的方法，而支架治疗法相较于传统的周边血管手术，其采用支架治疗的微创介入手术创伤小，并发症少，效果好，成为目前治疗周边血管狭窄的主要办法。Peripheral vascular surgery is a traditional method for treating peripheral vascular stenosis. Compared with traditional peripheral vascular surgery, stent therapy is a minimally invasive interventional operation with less trauma, fewer complications, and better results. It has become the current treatment for peripheral vascular stenosis. main method.
现有技术中支架为编织丝编制而成，对编织丝自由端的连接方式未有相关限定。传统的支架中的连接方式为，编织丝的两个自由端相对并且并列一起具有叠合部，叠合部上套有管子，使自由端裸露出管体，然后将自由端的外露部分去除。In the prior art, the bracket is made of braided wire, and there is no relevant limitation on the connection method of the free end of the braided wire. The connection method in the traditional stent is that the two free ends of the braided wire are facing each other and have a superimposed part juxtaposed together. A tube is sheathed on the superimposed part, so that the free ends are exposed to the tube body, and then the exposed part of the free end is removed.
传统支架的缺点，自由端为有缝连接，血液会渗入缝隙，影响支架的使用寿命；支架的连接部直径增大，导致支架的自由端径向力和轴向力分布不均；支架的柔软性差，且影响到支架的美观性。The disadvantages of traditional stents are that the free end is connected with a seam, and blood will seep into the gap, which will affect the service life of the stent; the diameter of the connecting part of the stent increases, resulting in uneven distribution of radial force and axial force at the free end of the stent; the softness of the stent Poor performance, and affect the aesthetics of the bracket.
实用新型内容Utility model content
本实用新型的目的在于解决上述的技术问题，提供一种介入血管内的自由端为无缝连接的支架。The purpose of the utility model is to solve the above-mentioned technical problem, and provide a stent whose free end is seamlessly connected in the blood vessel.
本实用新型的目的：一种无缝支架，用于介入血管内部，由至少一根编织丝编制而成，编织丝具有偶数个自由端，所述编织丝的自由端两两对接，所述由编织丝绕制后的支架呈筒状结构，特别地，The purpose of this utility model: a seamless stent for intervening in blood vessels, which is made of at least one braided wire, and the braided wire has an even number of free ends, and the free ends of the braided wire are butted in pairs. The stent after the braided wire is wound has a cylindrical structure, especially,
所述编织丝的自由端均具有切削部，相对接两个自由端的切削部无缝拼接为一直径与编织丝直径一致的拼合部，所述拼合部上外套有连接管；所述连接管的内壁与拼合部的外壁无缝连接。The free ends of the braided wires all have cutting parts, and the cutting parts of the opposite free ends are seamlessly spliced into a spliced part whose diameter is consistent with that of the braided wires, and a connecting pipe is covered on the spliced part; The inner wall is seamlessly connected with the outer wall of the split part.
优选的，所述无缝支架由编织丝通过正旋和反旋差叠而成，所述无缝支架具有由所述正旋编织丝和反旋编织丝围设的菱形网络单元，所述编织丝的正旋和反旋切换部为无缝支架两端的回旋圆角部。Preferably, the seamless stent is formed by stacking braided wires through forward rotation and reverse rotation difference, and the seamless stent has a diamond-shaped network unit surrounded by the forward-rotation braided wires and reverse-rotation braided wires, and the braided The forward-rotation and reverse-rotation switching parts of the wire are rounded corners at both ends of the seamless stent.
优选的，所述自由端的切削部为半圆柱体。Preferably, the cutting part of the free end is a semi-cylindrical body.
优选的，所述切削部具有顶端面、底端面和侧壁面，相对接的两个切削部之间两侧壁面相抵接并且两顶端面分别与相对的底端面抵接。Preferably, the cutting portion has a top end surface, a bottom end surface and a side wall surface, the two side wall surfaces abut against two adjacent cutting portions, and the two top end surfaces respectively abut against the opposite bottom end surface.
优选的，所述侧壁面之间具有凹凸结构。Preferably, there is a concavo-convex structure between the side wall surfaces.
优选的，所述连接管为C-Clip管。Preferably, the connecting tube is a C-Clip tube.
优选的，所述相对接的两个自由端的切削部之间激光焊接固定。Preferably, the cutting parts of the two abutting free ends are fixed by laser welding.
优选的，所述连接管与拼合部之间为激光焊接固定或夹紧形变固定。Preferably, the connecting pipe and the split part are fixed by laser welding or clamped and deformed.
本实用新型的有益效果体现在：The beneficial effects of the utility model are reflected in:
1.编织丝自由端的拼合部与连接管无缝连接；1. The joint part of the free end of the braided wire is seamlessly connected with the connecting pipe;
2. 编织丝的自由端均具有切削部，自由端拼合的拼合部直径与编织丝直径一致，减小了拼合部的直径，使自由端径向力及轴向力分布均匀；2. The free end of the braided wire has a cutting part, and the diameter of the spliced part of the free end is consistent with the diameter of the braided wire, which reduces the diameter of the spliced part and makes the radial force and axial force of the free end evenly distributed;
3.自由端的切削部增加了自由端之间的接触面积，便于进行激光焊接；3. The cutting part of the free end increases the contact area between the free ends, which is convenient for laser welding;
4.无缝支架柔软性好、美观性优。4. The seamless bracket has good flexibility and aesthetics.
附图说明Description of drawings
图1是本实用新型一种无缝支架中拼合部的截面结构示意图。Fig. 1 is a schematic cross-sectional structure diagram of a joint part in a seamless bracket of the present invention.
图2是本实用新型一种无缝支架中编织丝的自由端的立体图。Fig. 2 is a perspective view of the free end of the braided wire in a seamless support of the present invention.
图3是本实用新型一种无缝支架中连接管的立体图。Fig. 3 is a perspective view of a connecting pipe in a seamless bracket of the present invention.
具体实施方式Detailed ways
本实用新型提供了一种无缝支架，用于介入血管内部，如图1至图3所示，无缝支架由至少一根编织丝1编制而成，编织丝1具有偶数个自由端2，自由端即为编织丝的接头处，每根编织丝均具有两个自由端，即组成无缝支架的复数编织丝具备偶数个自由端，编织丝1的自由端2两两对接，对接处即为下文提到的拼合处，由编织丝1绕制后的支架呈筒状结构，编织丝1的自由端2均具有切削部3，相对接的两个自由端2的切削部3无缝拼接为一直径与编织丝1直径一致的拼合部4，拼合部4上外套有连接管5，连接管为C-Clip管，具有一轴向开口，通过钳压开口可闭合，同时该开口还便于激光焊接；连接管5的内壁与拼合部4的外壁无缝连接。The utility model provides a seamless stent for intervening in blood vessels. As shown in Figures 1 to 3, the seamless stent is made of at least one braided wire 1, and the braided wire 1 has an even number of free ends 2. The free ends are the joints of the braided wires, and each braided wire has two free ends, that is, the plural braided wires forming the seamless support have an even number of free ends, and the free ends 2 of the braided wires 1 are butted in pairs, and the butt joints are For the splicing mentioned below, the support wound by the braided wire 1 has a cylindrical structure, and the free ends 2 of the braided wire 1 have cutting parts 3, and the cutting parts 3 of the two free ends 2 that are connected are seamlessly spliced It is a splicing part 4 with the same diameter as the braided wire 1. The splicing part 4 is covered with a connecting pipe 5. The connecting pipe is a C-Clip pipe with an axial opening, which can be closed by clamping the opening. At the same time, the opening is convenient Laser welding; the inner wall of the connecting pipe 5 is seamlessly connected with the outer wall of the split part 4 .
进一步细化描述本方案中无缝支架的结构特征，无缝支架由编织丝1通过正旋和反旋差叠而成，无缝支架具有由正旋编织丝和反旋编织丝围设的菱形网络单元，编织丝的正旋和反旋切换部为无缝支架两端的回旋圆角部。此为本无缝支架的一种优选结构特征。进一步限定的，菱形网格单元的钝角Ø的范围为91度-179度。编织丝的横截面形状为圆形、椭圆形、梯形或矩形。编织丝可为镍钛合金编织丝、铂编织丝、金编织丝、钽编织丝等。Further describe the structural features of the seamless stent in this scheme in detail. The seamless stent is formed by laminating the braided wire 1 through forward rotation and reverse rotation. The seamless stent has a rhombus surrounded by the forward and reverse rotation In the network unit, the forward-rotation and reverse-rotation switching parts of the braided wire are the rounded corners at both ends of the seamless support. This is a preferred structural feature of the seamless stent. Further defined, the obtuse angle Ø of the rhombus grid unit ranges from 91 degrees to 179 degrees. The cross-sectional shape of the braided wire is circular, oval, trapezoidal or rectangular. The braided wire can be nickel-titanium alloy braided wire, platinum braided wire, gold braided wire, tantalum braided wire, and the like.
为优化本方案，自由端2的切削部为半圆柱体，方便切割及拼接，两个半圆柱体刚好能拼合为一个整圆柱体。In order to optimize this solution, the cutting part of the free end 2 is a half cylinder, which is convenient for cutting and splicing, and the two half cylinders can just be combined into a whole cylinder.
细化描述自由端的对接，切削部3具有顶端面31、底端面32和侧壁面33，相对接的两个切削部3之间两侧壁面33相抵接并且两顶端面31分别与相对的底端面32抵接，切削部之间无缝连接。The butt joint of the free ends is described in detail. The cutting part 3 has a top end surface 31, a bottom end surface 32, and a side wall surface 33. 32 abutments, seamless connection between cutting parts.
进一步优化的，侧壁面之间具有凹凸结构或者其他形式能使得两个侧壁面对接更牢固的结构，提高自由端对接的稳定性。Further optimized, there is a concave-convex structure between the side wall surfaces or other forms that can make the two side wall surfaces connect more firmly, and improve the stability of the free end docking.
本方案中，相对接的两个自由端的切削部之间的拼接方式优选采用激光焊接固定，激光焊接的方式较为便捷且拼接牢固稳定。连接管的内壁与拼合部的外壁之间为激光焊接固定或夹紧形变固定，优选采用激光焊接固定。In this solution, the splicing method between the cutting parts of the two free ends that are connected is preferably fixed by laser welding, and the laser welding method is more convenient and the splicing is firm and stable. The inner wall of the connecting pipe and the outer wall of the split part are fixed by laser welding or clamping deformation, preferably by laser welding.
一种无缝支架的制造方法，包括如下步骤，A method for manufacturing a seamless bracket, comprising the steps of,
S1、绕制步骤，编织丝进行正旋和反旋差叠绕制，外露自由端；S1. In the winding step, the braided wire is wound forwardly and reversely, and the free end is exposed;
S2、切削步骤，将外露的自由端进行切削；优选的，所有自由端切削部均为同规格的半圆柱体，两个半圆柱体能拼合为一圆柱体。S2. The cutting step is to cut the exposed free ends; preferably, all the cutting parts of the free ends are half cylinders of the same specification, and the two half cylinders can be combined into one cylinder.
S3、套管步骤，将相对接两个自由端的其中一个穿接入连接管，另一个从相反方向穿接入连接管，并使两个自由端的切削部相拼接；当然该步骤还可适量调整，例如将一个自由端穿过连接管，然后将两个自由端相对接使自由端的切削部相拼接，然后移动连接管覆盖于拼合部。S3, casing step, insert one of the two opposite free ends into the connecting pipe, and insert the other into the connecting pipe from the opposite direction, and splice the cutting parts of the two free ends; of course, this step can also be adjusted appropriately , such as passing one free end through the connecting pipe, and then abutting the two free ends so that the cutting parts of the free ends are spliced together, and then moving the connecting pipe to cover the spliced part.
S4、焊接步骤，对套管好的连接管进行激光焊接，使连接管与自由端无缝焊接一体。S4. The welding step is to perform laser welding on the connecting pipe of the casing, so that the connecting pipe and the free end are seamlessly welded together.
细化焊接步骤，包括直接对连接管和自由端进行激光焊接，使接管与自由端无缝焊接一体；或者直接对连接管进行钳夹，使接管与自由端无缝固接一体；或者先对连接管进行钳夹，再进行激光焊接，使接管与自由端无缝焊接一体。Refine the welding steps, including directly laser welding the connecting pipe and the free end, so that the connecting pipe and the free end are seamlessly welded together; or directly clamp the connecting pipe, so that the connecting pipe and the free end are seamlessly fixed together; or first The connecting pipe is clamped, and then laser welded, so that the connecting pipe and the free end are seamlessly welded together.
上文所列出的一系列的详细说明仅仅是针对本实用新型的可行性实施方式的具体说明，它们并非用以限制本实用新型的保护范围，凡未脱离本实用新型技艺精神所作的等效实施方式或变更均应包含在本实用新型的保护范围之内。The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present utility model, and they are not used to limit the protection scope of the present utility model. Embodiments or modifications should be included within the protection scope of the present utility model.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278784.4UCN204766052U (en) | 2015-05-04 | 2015-05-04 | Seamless support |
| PCT/CN2016/080962WO2016177323A1 (en) | 2015-05-04 | 2016-05-04 | Intravascular stent and manufacturing method thereof |
| EP16789317.1AEP3292842B1 (en) | 2015-05-04 | 2016-05-04 | Intravascular stent |
| ES16789317TES2928683T3 (en) | 2015-05-04 | 2016-05-04 | intravascular stent graft |
| US15/571,737US10888411B2 (en) | 2015-05-04 | 2016-05-04 | Intravascular stent and manufacturing method thereof |
| PL16789317.1TPL3292842T3 (en) | 2015-05-04 | 2016-05-04 | Intravascular stent |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278784.4UCN204766052U (en) | 2015-05-04 | 2015-05-04 | Seamless support |
| Publication Number | Publication Date |
|---|---|
| CN204766052Utrue CN204766052U (en) | 2015-11-18 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520278784.4UExpired - LifetimeCN204766052U (en) | 2015-05-04 | 2015-05-04 | Seamless support |
| Country | Link |
|---|---|
| CN (1) | CN204766052U (en) |
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|---|---|---|---|---|
| CN104799983A (en)* | 2015-05-04 | 2015-07-29 | 苏州英络医疗器械有限公司 | Seamless stent and manufacturing method thereof |
| WO2016177323A1 (en)* | 2015-05-04 | 2016-11-10 | 苏州茵络医疗器械有限公司 | Intravascular stent and manufacturing method thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104799983A (en)* | 2015-05-04 | 2015-07-29 | 苏州英络医疗器械有限公司 | Seamless stent and manufacturing method thereof |
| WO2016177323A1 (en)* | 2015-05-04 | 2016-11-10 | 苏州茵络医疗器械有限公司 | Intravascular stent and manufacturing method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | Assignee:Suzhou ronghua Leasing Co.,Ltd. Assignor:SUZHOU INNOMED MEDICAL DEVICE Co.,Ltd. Contract record no.:X2020320010033 Denomination of utility model:A seamless bracket Granted publication date:20151118 License type:Exclusive License Record date:20201207 | |
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