CN211156502U - Blood vessel support capable of positioning - Google Patents
Blood vessel support capable of positioning Download PDFInfo
- Publication number
- CN211156502U CN211156502U CN201921795849.7U CN201921795849U CN211156502U CN 211156502 U CN211156502 U CN 211156502U CN 201921795849 U CN201921795849 U CN 201921795849U CN 211156502 U CN211156502 U CN 211156502U
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- positionable
- stent
- positioning
- support
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- 210000004204 blood vessel Anatomy 0.000 title abstract description 28
- 230000002792 vascular Effects 0.000 claims abstract description 31
- 238000009941 weaving Methods 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 17
- 230000006378 damage Effects 0.000 abstract description 5
- 230000003902 lesion Effects 0.000 description 12
- 210000003111 iliac vein Anatomy 0.000 description 8
- 230000001575 pathological effect Effects 0.000 description 4
- 206010040007 Sense of oppression Diseases 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 208000011580 syndromic disease Diseases 0.000 description 2
- 206010051055 Deep vein thrombosis Diseases 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 206010070995 Vascular compression Diseases 0.000 description 1
- 206010047249 Venous thrombosis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical class [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003090 iliac artery Anatomy 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000005077 saccule Anatomy 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000001732 thrombotic effect Effects 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 201000002282 venous insufficiency Diseases 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model provides a pair of can fix a position vascular support is woven by the silk material and is formed, divide into two sections along can fixing a position vascular support axial, one section is for fixing a position the district section, and another section is for supporting the district section, the location district section be by the silk material is forming the network structure that forms continues to be woven after supporting the district section, the location district section has the external diameter to be greater than support the location portion of district section, just the silk material is in the tip border of location district section is continuous form. The utility model discloses a be provided with of location district section and can fix a position the accurate location of vascular support when doing benefit to the release, and the tip border of location district section is continuous form to this avoids the silk material to form most advanced and damage blood vessel at the tip that can fix a position vascular support.
Description
Technical Field
The utility model relates to an interventional therapy apparatus, in particular to a blood vessel support capable of being positioned.
Background
The blood vessel stent is characterized in that on the basis of the expansion and the forming of a lumen saccule, a stent is placed in a lesion section to achieve the purposes of supporting a blood vessel at a stenotic occlusion section, reducing the elastic retraction and the reshaping of the blood vessel and keeping the blood flow of a lumen smooth. Since the first coronary stent operation was successfully carried out by Sigwart et al in the united states by implanting a self-expanding metal bare stent into a patient in 1987, the minimally invasive intracavity treatment technology has made a great progress, and the positionable vascular stent has been widely applied to the treatment of systemic vascular diseases at present.
Diseased vessels at different parts have special pathological structure characteristics, but most of the current stent designs follow the design of arterial stents, and the application has certain limitations. For example, while stent implantation is currently widely used for the treatment of symptomatic venous reflux disorder, the stents used are mostly large-caliber arterial stents. The pathological difference exists between the venous lesion and the arterial lesion, the design of the arterial stent can not meet the requirement of a vein lesion blood vessel, and adverse events such as stent displacement, fracture, secondary thrombus in the stent and the like occur frequently. It is necessary to design a stent which is adaptive to the pathological structure characteristics of a diseased blood vessel.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a locatable vascular stent for solving the problem that the prior vascular stent is difficult to be applied to the intervention of venous lesion in the prior art.
In order to achieve the above and other related objects, the present invention provides a positionable vessel stent, which is formed by weaving wires, and is divided into two sections along the axial direction of the positionable vessel stent, one section is a positioning section, the other section is a supporting section, the positioning section is formed by the wires after the supporting section is woven continuously to form a mesh structure, the positioning section has an outer diameter larger than the positioning portion of the supporting section, and the wire is in the end boundary of the positioning section to be continuous.
Preferably, the wire forms a plurality of consecutive arcs at the end of the positioning section, all constituting the end boundary of the positioning section.
Preferably, the outer diameter of the positioning section is gradually increased along the axial direction of the positionable blood vessel stent, and the positioning section forms an included angle with the axial direction of the positionable blood vessel stent, and the included angle is 10-90 degrees.
Preferably, the positioning section is formed by reversely weaving the wire at the end of the supporting section, and the outer diameter of the positioning section is gradually increased.
Preferably, the maximum outer diameter of the positioning section is 1.1-3 times of the outer diameter of the supporting section.
Preferably, the length of the positioning section along the axial direction of the positionable vessel stent is in the range of: one third of the outer diameter of the support section to three times the outer diameter of the support section.
Preferably, along the axial direction of the positionable vessel stent, the supporting section is divided into at least two sections according to the size of the radial supporting force.
Preferably, the support sections are arranged such that sections having a large radial support force alternate with sections having a small radial support force.
Preferably, in the axial direction of the positionable vessel stent, the outer diameter of the support section gradually decreases or increases close to the positioning section.
Preferably, the support section is cylindrical.
Preferably, the wire forms a plurality of consecutive arcs at the end of the support section, all constituting the end boundary of the support section.
As mentioned above, the utility model discloses a can fix a position vascular support has following beneficial effect: the positioning section is arranged to facilitate release, so that the positionable vascular stent can be accurately positioned, and the end boundary of the positioning section is continuous, thereby avoiding the wire from forming a tip at the end of the positionable vascular stent to damage the blood vessel.
Drawings
Fig. 1 is a schematic view of an embodiment of the positionable vessel stent of the present invention.
Fig. 2 is a schematic view of a positionable vascular stent according to an embodiment of the present invention.
Fig. 3 is a schematic view of an embodiment of the support section of the present invention.
Description of the element reference numerals
1 location section
11 end boundary of positioning section
2 support section
21 weak supporting section
22 strong supporting section
23 continuous arc
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 3. It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
For the convenience of description, the support section towards the positioning section is designated in the present specification as the forward axial direction of the positionable vessel stent, i.e. the direction of the arrow in fig. 1 is the forward direction.
As shown in fig. 1 to 3, the utility model provides a can fix a position vascular support is woven in succession by one or more silk materials and is formed, divide into two sections along can fix a position vascular support axial, one section is location district section 1, and another section is support district section 2, location district section 1 is by the silk material is forming the network structure that continues to weave formation after supporting district section 2, location district section 1 has the external diameter to be greater than the location portion of support district section 2, just the silk material is in the tip border of location district section 1 is continuous. The utility model discloses a can fix a position vascular support is equipped with location district section 1, and its location portion that has great external diameter, location when being convenient for release, and the tip border 11 of location district section 1 is continuous form, does not have naked silk material tip promptly, avoids damaging the blood vessel.
Positioning section
As shown in FIG. 1, the wire in this embodiment forms a plurality of consecutive arcs at the end of the positioning section 1, all constituting the end boundary 11 of the positioning section. When the vascular stent is woven through the wire materials, the continuous arc is formed through weaving when the weaving is finished, the end boundary of the positioning section is in a closed shape instead of a tip shape formed by cutting the wire materials, the smooth end shape of the vascular stent capable of being positioned is enhanced through the continuous arc, and the injury to blood vessels is further avoided.
As shown in fig. 1, as an embodiment of the positioning section 1, the positioning section 1 in this embodiment is formed by continuously braiding wires at the end of the supporting section 2 in the axial forward direction of the positionable vessel stent, and the wires are gradually increased in the axial forward outer diameter of the positionable vessel stent, and the positioning section forms an included angle with the axis of the positionable vessel stent, and the included angle is 10 ° to 90 °. The positioning section 1 in the embodiment is flared, that is, a wire material is continuously woven along the axial direction of the positionable vascular stent to form a horn-shaped structure, which facilitates positioning during release. The end boundary 11 of the positioning section is continuous and free of tips, avoiding damage to the vessel. The embodiment is beneficial to accurate positioning of the stent at the bifurcation of the blood vessel (such as the iliac vein outflow opening), and reduces the influence of the positioned blood vessel stent on the blood flow at the opposite side after the stent is implanted, and the blood vessel is prevented from being excessively stretched into the upper end to converge the blood vessel.
As another embodiment of the positioning section 1, not shown, the positioning section 1 is formed by reversely weaving the wire at the end of the supporting section 2, and the outer diameter thereof is gradually increased. The positioning section 1 of the present embodiment is sleeved outside the supporting section 2 to form a nested shape, and is hung upside down on the blood vessel through the trumpet-shaped nested section, so as to further facilitate positioning. In the above embodiments, the length of the positioning section 1 in the axial direction of the positionable vessel stent is in the range of: one third of the outer diameter of the support section to three times the outer diameter of the support section, typically 5-50 mm; namely, the axial length of the locatable vessel stent in the locating section is 5-50 mm.
Generally, the maximum outer diameter of the positioning section is 1.1-3 times of the outer diameter of the supporting section. The shape of the positioning section 1 is not limited to this, it only needs to have a positioning portion with an outer diameter larger than the support section 2, it may also be wine-cup-shaped, partially spherical or waist-drum-shaped, and it is woven from the wire material woven to form the support section 2.
Support section
In the embodiment shown in fig. 1, the supporting section 2 is divided into at least two sections according to the magnitude of the radial supporting force along the axial direction of the positionable vessel stent, such as a tightly woven strong supporting section 22 and a loosely woven weak supporting section 21.
For example, for non-thrombotic iliac vein compression syndrome, the locatable vascular stent comprises a location section 1, a strong support section 22 and a weak support section 21 in sequence along the axial direction, wherein the length of the strong support section 22 is 10-50 mm so as to resist clamping compression of iliac arteries and lumbar vertebrae to iliac veins, and the length of the weak support section 21 is 30-90 mm.
As shown in fig. 3, in the supporting sections of the present embodiment, the sections with large radial supporting force and the sections with small radial supporting force are alternately arranged, that is, there are multiple sections of strong supporting sections 22 and weak supporting sections 21, and the strong supporting sections 22 and the weak supporting sections 21 are alternately distributed. It can also be distributed in various ways, and the radial supporting force of different strong/weak supporting sections is different.
For PTS, for example, the locatable vessel stent is axially sequentially a locating section, a first strong support section, a weak support section, and a second strong support section. The radial support strength of the strong support section is greater than that of the weak support section, and the strength of the first strong support area is greater than that of the second strong support area.
Typically, the support section is cylindrical with a constant outer diameter, but it may also be of a variable outer diameter, such as conical. As shown in fig. 2, as an embodiment of the supporting section, in the axial direction of the positionable vessel stent, the outer diameter of the supporting section 2 gradually decreases or increases near the positioning section 1, that is, the supporting section 2 of this embodiment is tapered.
Preferably, as shown in fig. 2 and 3, the wire forms a plurality of continuous arcs 23 at the end of the support section 2, all the continuous arcs 23 constituting the end boundaries of the support section 2. When the weaving is carried out through the wire materials, the continuous arc 23 is formed by weaving at the beginning of weaving, so that the end boundary of the support section 2 is in a closed shape instead of the tip of the wire materials, and the smooth end type of the blood vessel stent capable of being positioned is enhanced by the arrangement of the continuous arc 23, and further the damage to the blood vessel is avoided.
The positioning section 1 and the supporting section 2 can be organically combined according to needs to form the positionable vessel stent with different shapes and configurations. The embodiment can better adapt to the physiological structure characteristics of the diseased blood vessel by adjusting the strength of radial force of different axial sections, positioning the structural design of the sections and positioning the overall cylindrical or conical design of the vascular stent. Is especially suitable for the iliac vein lesion.
The iliac vein support that is in the present market a few, its design and artery support are indifferent, all are radial force axial evenly distributed support, but to iliac vein oppression syndrome, its oppression punishment department need have high strength holding power to resist the oppression, thereby maintain the unblocked nature of blood vessel, and the normal blood vessel behind the excessive pressure punishment point, because need not overcome the pulsation unlike the artery support, the holding power of its needs only need be enough to prevent that the support from taking place to shift can, if support intensity too high can lead to breathing cycle in-process, can fix a position the blood vessel support and produce the discomfort to the vascular effort too big and make the patient.
For the sequela of deep venous thrombosis (PTS) of lower limbs, lesions are usually long, a locatable vascular stent needs to cross hip joints, the lesion parts need high radial strength, and the locatable vascular stent at the hip joints needs to have high flexibility. The positionable vascular stent with axially and uniformly distributed radial force is difficult to simultaneously meet different requirements of different vascular parts on strength and flexibility. The positioning section 1 and the supporting section 2 of the present embodiment have different radial supporting forces along the axial direction, which can be realized by the density of the weave and the selection of the material, so as to adapt to the pathological characteristics well.
The material used for the wire in this embodiment may be a metal alloy, such as common nitinol, cobalt-chromium alloy, 316L stainless steel, magnesium alloy, etc., or may be various high molecular polymers, not limited to the above listed materials.
Meanwhile, in order to adapt to the anatomical morphology of the iliac vein opening, the proximal end of the locatable vascular stent of the embodiment is designed with a horn mouth or a corolla-shaped locating structure, namely, the locating section 1 is more beneficial to locating the locatable vascular stent.
All lesion features are similar to those of the blood vessel of the iliac vein lesion, and the design can be applied to the lesion blood vessel with high adaptation, so that the lesion blood vessel has high stability.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (11)
1. A positionable vascular stent is characterized in that the positionable vascular stent is formed by weaving wires and is divided into two sections along the axial direction of the positionable vascular stent, one section is a positioning section, the other section is a supporting section, the positioning section is a net-shaped structure formed by continuously weaving the wires after the supporting section is formed, the positioning section is provided with a positioning part with an outer diameter larger than that of the supporting section, and the end boundaries of the wires in the positioning section are continuous.
2. The positionable vessel stent of claim 1, wherein: the wire forms a plurality of consecutive arcs at an end of the positioning section, all of the consecutive arcs constituting an end boundary of the positioning section.
3. The positionable vessel stent of claim 1, wherein: the outer diameter of the positioning section is gradually increased along the axial forward direction of the positionable vascular stent, and an included angle is formed between the positioning section and the axial forward direction of the positionable vascular stent and is 10-90 degrees.
4. The positionable vessel stent of claim 1, wherein: the positioning section is formed by reversely weaving the wire at the end part of the supporting section, and the outer diameter of the positioning section is gradually increased.
5. The positionable vessel stent of claim 1, wherein: the maximum outer diameter of the positioning section is 1.1-3 times of the outer diameter of the supporting section.
6. The positionable vessel stent of any of claims 3 to 5, wherein: the length range of the positioning section along the axial direction of the positionable vessel stent is as follows: one third of the outer diameter of the support section to three times the outer diameter of the support section.
7. The positionable vessel stent of claim 1, wherein: along the axial direction of the positionable vessel stent, the supporting section is divided into at least two sections according to the different sizes of radial supporting force.
8. The positionable vessel stent of claim 7, wherein: among the support sections, sections with large radial support force and sections with small radial support force are alternately arranged.
9. The positionable vessel stent of claim 7, wherein: along the axial direction of the positionable vessel stent, the outer diameter of the supporting section gradually decreases or increases close to the positioning section.
10. The positionable vessel stent of claim 7, wherein: the support section is cylindrical.
11. The positionable vessel stent of claim 1, wherein: the wire forms a plurality of consecutive arcs at the end of the support section, all of the consecutive arcs constituting an end boundary of the support section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921795849.7U CN211156502U (en) | 2019-10-24 | 2019-10-24 | Blood vessel support capable of positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921795849.7U CN211156502U (en) | 2019-10-24 | 2019-10-24 | Blood vessel support capable of positioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211156502U true CN211156502U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921795849.7U Active CN211156502U (en) | 2019-10-24 | 2019-10-24 | Blood vessel support capable of positioning |
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| CN (1) | CN211156502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110613538A (en) * | 2019-10-24 | 2019-12-27 | 上海唯域医疗科技有限公司 | Blood vessel support capable of positioning |
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2019
- 2019-10-24 CN CN201921795849.7U patent/CN211156502U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110613538A (en) * | 2019-10-24 | 2019-12-27 | 上海唯域医疗科技有限公司 | Blood vessel support capable of positioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240318 Address after: Building 10, No. 23 Huashan Middle Road, Xinbei District, Changzhou City, Jiangsu Province, 213002 Patentee after: LEO MEDICAL CO.,LTD. Country or region after: China Address before: Room 108, Building 2, No. 103 Cailun Road, China (Shanghai) Pilot Free Trade Zone, Pudong New Area, Shanghai Patentee before: SHANGHAI WEIYU MEDICAL TECHNOLOGY CO.,LTD. Country or region before: China |
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| TR01 | Transfer of patent right |