CN203388975U - Vascular stent for interventional operation - Google Patents
Vascular stent for interventional operation Download PDFInfo
- Publication number
- CN203388975U CN203388975U CN201320439769.4U CN201320439769U CN203388975U CN 203388975 U CN203388975 U CN 203388975U CN 201320439769 U CN201320439769 U CN 201320439769U CN 203388975 U CN203388975 U CN 203388975U
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- CN
- China
- Prior art keywords
- alloy wire
- nitinol alloy
- intravascular stent
- vascular stent
- dextrorotation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000002792 vascular Effects 0.000 title abstract 7
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 57
- 229910045601 alloy Inorganic materials 0.000 claims description 54
- 239000000956 alloy Substances 0.000 claims description 54
- 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 claims description 53
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 5
- 238000009987 spinning Methods 0.000 abstract 6
- 230000002929 anti-fatigue Effects 0.000 abstract 1
- 229910000521 B alloy Inorganic materials 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000007631 vascular surgery Methods 0.000 description 1
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Abstract
The utility model provides a vascular stent for an interventional operation. The vascular stent formed by winding of at least one nickel-titanium alloy wire comprises a cylindrical body and roundabout rounded corner portions disposed on two ends of the body which is formed by differential overlapping of positive spinning and reverse spinning of the nickel-titanium alloy wires, the body comprises a set of diamond-shaped grid cells formed by the enclosing of adjacent positive spinning and reverse spinning nickel-titanium alloy wires, and a positive spinning and reverse spinning switching portion of the nickel-titanium alloy wires is the roundabout rounded corner portions located on two ends of the body. The vascular stent for the interventional operation has the advantages that with the vascular stent formed by the winding of one or a plurality of whole wires and no openings on a radial end, perfect combination of radial rigidity and axial flexibility of the vascular stent is achieved, and thus, high radial resistance enables anti-fatigue safety of the vascular stent to be greatly improved.
Description
Technical field
This utility model relates to minimally invasive medical technique with the apparatus field, particularly a kind of intravascular stent that can regulate arbitrarily internal diameter and radial force for intervene operation.
Background technology
Compare traditional periphery vascular surgery, adopt Wicresoft's intervene operation wound of stent in the treatment little, effective, become the main way of current treatment periphery angiostenosis.
Existing intravascular stent as shown in Figure 1, generally by cut thin metallic tubd, formed, because the node of crossing metal tube is relatively-stationary, so after in intravascular stent extend into blood vessel, its two ends can inwardly subside, and form two horn mouths that relatively diminish, and are similar to water clock shape, can stop like this flowing of blood, serious meeting causes the failure of operation.
In order to prevent the generation of above-mentioned situation, as shown in Figure 2, existing intravascular stent generally also can adopt metal wire knitted to reticulate, but due to its cancellated radial opening, so the radial rigidity of intravascular stent offsets poorly, and its durability also can be relatively poor.
Utility model content
In view of the defect that above-mentioned prior art exists, the purpose of this utility model is to propose the intravascular stent for intervene operation that a kind of radial rigidity axial elasticity combines.
The purpose of this utility model will be achieved by the following technical programs:
A kind of intravascular stent for intervene operation, by at least one nitinol alloy wire coiling, formed, the described body that is comprised a tubular by the intravascular stent after nitinol alloy wire coiling, and the fillet part that is arranged on the convolution at body two ends, described body is formed by dextrorotation and poor the folding of derotation by nitinol alloy wire, described body is formed by one group of network unit, described network unit is enclosed and is formed by adjacent dextrorotation nitinol alloy wire and derotation nitinol alloy wire, and the dextrorotation of described nitinol alloy wire and derotation switching part are the fillet part of the convolution at described body two ends.
Or, the described intravascular stent for intervene operation comprises that at least two nitinol alloy wire coilings form, described body is by nitinol alloy wire by staggered poor folded the forming of dextrorotation and derotation, and described network unit is enclosed and formed by the dextrorotation of adjacent nitinol alloy wire and derotation.
Preferably, the scope at the obtuse angle of described network unit is 91 degree-179 degree.
Preferably, the shape of cross section of described nitinol alloy wire is circular, oval, trapezoidal or rectangle.
Preferably, described nitinol alloy wire or replace with platinum filament, spun gold, tantalum wire.
The beneficial effects of the utility model major embodiment is: the intravascular stent being formed by one or more whole filament winding system, and longitudinal end imperforation, makes the radial rigidity axial elasticity of intravascular stent of the present utility model reach perfect combination; Because the resistance of radial pulsation load is mainly from curvature wiry, therefore, high radial resistance significantly improves the fatigue safety of intravascular stent in addition.
Below just accompanying drawing in conjunction with the embodiments, is described in further detail the specific embodiment of the present utility model, so that technical solutions of the utility model are easier to understand, grasp.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of intravascular stent of prior art;
Fig. 2 is the structural representation of the another kind of intravascular stent of prior art;
Fig. 3 is the structural representation of the first embodiment of this utility model intravascular stent;
Fig. 4 is the structural representation of the second embodiment of this utility model intravascular stent;
Fig. 5 is the front view of the second embodiment of this utility model intravascular stent;
Fig. 6 is the left view of the second embodiment of this utility model intravascular stent;
Fig. 7 is the expansion schematic diagram of the second embodiment of this utility model intravascular stent;
Fig. 8 is the structural representation of the manufacturing equipment of this utility model intravascular stent;
Fig. 9 is the enlarged diagram of the A part in Fig. 8.
The specific embodiment
This utility model has disclosed a kind of bio-compatibility tinsel (as nitinol alloy wire) braiding and the Self-expanded stent for intervene operation of formation, by one (shown in Fig. 3) or 2 coilings of many (shown in Fig. 4 to Fig. 7) nitinol alloy wires, formed, and on the length direction of whole support axial dipole field composition interlaced with each other at a certain angle.It should be noted that: this utility model only be take nitinol alloy wire as example, its shape of cross section can be circular, oval, trapezoidal, rectangle, or other; Certainly this nitinol alloy wire also can be substituted by other B alloy wires, such as: Stainless steel 316 etc.
The described body 4 that is comprised a tubular by the intravascular stent after nitinol alloy wire coiling, and the fillet part 1 that is arranged on the convolution at body 4 two ends, described body is formed by dextrorotation and staggered poor the folding of derotation by nitinol alloy wire, described body is formed by one group of network unit 3, described network unit 3 is enclosed and is formed by adjacent dextrorotation nitinol alloy wire 21 and derotation nitinol alloy wire 22, and the dextrorotation of described nitinol alloy wire 2 and derotation switching part are the fillet part 1 of the convolution at described body two ends.Wherein, the scope at the obtuse angle of described network unit 3 is 91 degree-179 degree.The size at angle determines that titanium-nickel wire is wound around density.
The manufacture method that a kind of energy production in enormous quantities intravascular stent of the present utility model is also provided of the present utility model.
As shown in Figure 8 and Figure 9, a kind of manufacture method of the intravascular stent for intervene operation, comprises the steps:
S1, one end of nitinol alloy wire 2 is fixed in the fixing hole 51 of a mandrel tool;
S2, the direction of pressing the dextrorotation helicla flute 52 on described mandrel tool surface, carry out the dextrorotation coiling of nitinol alloy wire 2 from front to back;
S3, when the nitinol alloy wire 2 of dextrorotation coiling arrives the dextrorotation spiral fluted afterbody on described mandrel tool surfaces, the arc sections 55 of walking around described mandrel tool afterbody forms fillet part 1, by the direction of the derotation helicla flute 53 on described mandrel tool surface, carry out from back to front the derotation coiling of nitinol alloy wire 2 again;
In described derotation winding process, should follow and once contact derotation nitinol alloy wire 22 above dextrorotation nitinol alloy wire 21, contact derotation next time nitinol alloy wire 22 is through at the cross-over principle winding of described dextrorotation nitinol alloy wire 22 belows along the tapered wall of the taper circular hole 54 of described mandrel tool, form network unit 3; The cross-over principle of this winding process is similar to braiding;
S4, the two ends of described nitinol alloy wire 2 are welded together.
When intravascular stent is formed by 2 coilings of at least two nitinol alloy wires, first complete nitinol alloy wire 2 coilings and welding, then by the interspersed coiling of all the other nitinol alloy wires 2 and welding.Or, when intravascular stent is formed by 2 coilings of at least two nitinol alloy wires, first complete all nitinol alloy wire 2 dextrorotation coilings, then complete the interspersed coiling of derotation of all nitinol alloy wires 2.Certainly, S2 of the present utility model, S3 coiling step also can adopt traditional-handwork or machinery establishment to substitute.
In addition, when many B alloy wire coilings form intravascular stent, the material of B alloy wire and sectional area can be selected difference, can allow the good B alloy wire of rigidity mainly bear body internal load, and other B alloy wire increases area coverage.Such as carrying out coiling with six roots of sensation B alloy wire, can two thicker B alloy wires around relatively more sparse (bearing radial force), to obtain closeer (increase area coverage) other four thinner B alloy wires are rich; The intravascular stent that also can be formed by many (shown in Fig. 4 to Fig. 7) thinner B alloy wire coiling in the intravascular stent outer side covers being formed by one (shown in Fig. 3) or many (shown in Fig. 4 to Fig. 7) thicker B alloy wire coiling.
Wherein, described S4 welding method comprises directly laser weld is carried out in the two ends of same nitinol alloy wire 2; Or adopt joint sleeve that the two ends of same nitinol alloy wire 2 are fixed by socket; Or the two ends of same nitinol alloy wire 2 are adopted to the coupling of memorial alloy light-wall pipe.
For realizing the manufacturing equipment of above-mentioned manufacture method, at least comprise that one for carrying out nitinol alloy wire 2 the mandrel tool 5 of coiling, one end of described mandrel tool is provided with the fixing hole 51 for fixing described nitinol alloy wire 2 ends, described in interval, the outer surface of the mandrel tool of fixing hole is provided with dextrorotation helicla flute 52 and derotation thread groove 53, described dextrorotation helicla flute 52 and derotation thread groove 53 joint portion are provided with taper circular hole 54 towards mandrel tool inside, and described mandrel tool end is also provided with arc sections 55.
The mechanical mechanism of intravascular stent of the present utility model is different from the laser cut stent of any routine.The node of the network cells overlap of intravascular stent of the present utility model is firmly restriction not, and the node of the firm constraint of this shortage allows nitinol alloy wire rotation and distortion, rather than enters a circumferential displacement.Consequently, it can prevent the typical node high bending strain in part around in cut class support.This mechanism is that identical network has, but closed end circulation and the low angle of cut, and the nitinol alloy wire using makes new support become the support that a unique radial rigidity and axial elasticity combine, after like this in intravascular stent is implanted to blood vessel, its good ductility can make it can not form traditional water clock shape, and be forever configured as cylindricly, solved the puzzlement that prior art is brought.
In addition, in order to increase the visibility of intravascular stent in Minimally Invasive Surgery, it can adopt the opaque heavy metal silk of radio or metal alloy wires (as platinum, gold, tantalum) or overlay coating, or on intravascular stent, uses selectively the opaque material of radio (as female connector pipe).
Intravascular stent longitudinal end imperforation of the present utility model, makes its radial rigidity axial elasticity reach perfect combination; Because the resistance of radial pulsation load is mainly from curvature wiry, therefore, high Radial resistant force significantly improves the fatigue safety of intravascular stent in addition.And manufacture method of the present utility model is comparatively simple, manufacturing equipment is simplified too, is suitable for actual production.
Body internal diameter and the radial force of intravascular stent of the present utility model can regulate arbitrarily, the concrete practice:
A) change network unit angle and keep rack body internal diameter, local radial power is because area coverage strengthens like this.
B) change rack body internal diameter and keep network unit angle, the change of local radial power is less like this, but can effectively treat the patient that vessel diameter change is larger.
C) any a) and b) combination.
This utility model is not limited to aforementioned embodiments; those skilled in the art are under the enlightenment of this utility model technical spirit; also may make other changes, but as long as function and this utility model of its realization are same or similar, all should belong to protection domain of the present utility model.
Claims (5)
1. the intravascular stent for intervene operation, it is characterized in that: by least one nitinol alloy wire (2) coiling, formed, the described body (4) that is comprised a tubular by the intravascular stent after nitinol alloy wire coiling, and the fillet part (1) that is arranged on the convolution at body two ends, described body is formed by dextrorotation and poor the folding of derotation by nitinol alloy wire, described body is formed by one group of network unit (3), described network unit (3) is enclosed and is formed by adjacent dextrorotation nitinol alloy wire (21) and derotation nitinol alloy wire (22), the dextrorotation of described nitinol alloy wire and derotation switching part are the fillet part (1) of the convolution at described body two ends.
2. the intravascular stent for intervene operation according to claim 1, it is characterized in that: comprise that at least two nitinol alloy wires (2) coiling forms, described body is by nitinol alloy wire by staggered poor folded the forming of dextrorotation and derotation, and described network unit (3) is enclosed and formed by the dextrorotation of adjacent nitinol alloy wire and derotation.
3. the intravascular stent for intervene operation according to claim 1 and 2, is characterized in that: the scope at the obtuse angle of described network unit (3) is 91 degree-179 degree.
4. according to the intravascular stent for intervene operation described in claim 1 or 2 or 3, it is characterized in that: the shape of cross section of described nitinol alloy wire (2) is circular, oval, trapezoidal or rectangle.
5. according to the intravascular stent for intervene operation described in claim 1 or 2 or 3, it is characterized in that: described nitinol alloy wire (2) or replace with platinum filament, spun gold, tantalum wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439769.4U CN203388975U (en) | 2013-07-23 | 2013-07-23 | Vascular stent for interventional operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439769.4U CN203388975U (en) | 2013-07-23 | 2013-07-23 | Vascular stent for interventional operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203388975U true CN203388975U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320439769.4U Expired - Lifetime CN203388975U (en) | 2013-07-23 | 2013-07-23 | Vascular stent for interventional operation |
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| Country | Link |
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| CN (1) | CN203388975U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103356315A (en) * | 2013-07-23 | 2013-10-23 | 苏州英络医疗器械有限公司 | Intravascular stent applied to interventional operation as well as use method, manufacturing method and manufacturing device of intravascular stent |
| CN108720972A (en) * | 2017-04-19 | 2018-11-02 | 北京航空航天大学 | A kind of self expandable for avoiding coronary artery from blocking intervention valve bracket |
| CN110811918A (en) * | 2019-11-20 | 2020-02-21 | 湖南埃普特医疗器械有限公司 | Recoverable filter and filter pusher |
-
2013
- 2013-07-23 CN CN201320439769.4U patent/CN203388975U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103356315A (en) * | 2013-07-23 | 2013-10-23 | 苏州英络医疗器械有限公司 | Intravascular stent applied to interventional operation as well as use method, manufacturing method and manufacturing device of intravascular stent |
| CN103356315B (en) * | 2013-07-23 | 2016-05-25 | 苏州茵络医疗器械有限公司 | For intravascular stent and using method and manufacture method and the manufacturing equipment of intervene operation |
| CN108720972A (en) * | 2017-04-19 | 2018-11-02 | 北京航空航天大学 | A kind of self expandable for avoiding coronary artery from blocking intervention valve bracket |
| CN110811918A (en) * | 2019-11-20 | 2020-02-21 | 湖南埃普特医疗器械有限公司 | Recoverable filter and filter pusher |
| CN110811918B (en) * | 2019-11-20 | 2021-11-09 | 湖南埃普特医疗器械有限公司 | Recoverable filter and filter pusher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU YINLUO MEDICAL DEVICE CO., LTD. Free format text: FORMER NAME: SUZHOU INNOMED MEDICAL DEVICE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Xinghu Street Industrial Park in Suzhou city of Jiangsu Province, No. 218 B2-213 215121 Patentee after: SUZHOU INNOMED MEDICAL DEVICE Co.,Ltd. Address before: Xinghu Street Industrial Park in Suzhou city of Jiangsu Province, No. 218 B2-213 215121 Patentee before: SUZHOU INNOMED MEDICAL DEVICE Co.,Ltd. |
|
| 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: Vascular stents for interventional surgery Granted publication date: 20140115 License type: Exclusive License Record date: 20201207 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vascular stents for interventional surgery Effective date of registration: 20201207 Granted publication date: 20140115 Pledgee: Suzhou ronghua Leasing Co.,Ltd. Pledgor: SUZHOU INNOMED MEDICAL DEVICE Co.,Ltd. Registration number: Y2020320010225 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20140115 Pledgee: Suzhou ronghua Leasing Co.,Ltd. Pledgor: SUZHOU INNOMED MEDICAL DEVICE Co.,Ltd. Registration number: Y2020320010225 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Suzhou ronghua Leasing Co.,Ltd. Assignor: SUZHOU INNOMED MEDICAL DEVICE Co.,Ltd. Contract record no.: X2020320010033 Date of cancellation: 20240313 |
|
| EC01 | Cancellation of recordation of patent licensing contract |