CN206508076U - It is a kind of can further expansion support - Google Patents
It is a kind of can further expansion support Download PDFInfo
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- CN206508076U CN206508076U CN201621013517.5U CN201621013517U CN206508076U CN 206508076 U CN206508076 U CN 206508076U CN 201621013517 U CN201621013517 U CN 201621013517U CN 206508076 U CN206508076 U CN 206508076U
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- support
- halves
- further expansion
- stent
- suture
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Abstract
The utility model provide it is a kind of can further expansion support, including intact stent is divided into two along longitudinal cutting line, formed split after two halves support；The two halves support is stitched together by degradable suture, and two halves support suture partly overlaps.After suture is degraded, support is separated, and further expansion stenosis blood vessel, is also beneficial to the growth of blood vessel.Deviate stenosis because two halves support may occur larger displacement, on two halves support provided with circumferentially, girth be more than intact stent girth fixing line.To prevent two halves support from occurring big relative shift, also an increase connecting rope can be splitted in two halves support.The support that the utility model is provided can carry out quadratic extension after the implantation, reduce reangiostenosis rate.The design that support is splitted, connected, separating again, it is adaptable to children and infant；The probability that patient reuses balloon expandable stent is reduced, operation number of times and surgery cost is reduced.
Description
Technical field
The utility model be related to it is a kind of be used for treat hemadostewnosis can further expansion support, belong to intravascular Interventional Treatment
Technical field.
Background technology
Hemadostewnosis is the common disease of blood vessel section, causes cerebral arterial insufficiency or vein also to flow obstacle, is brought to patient
Serious consequence.Hemadostewnosis has many reasons, and what is be frequently run onto is arteriosclerotic obliteration, Deep vain thrombosis etc..Mesh
Before, there is open chest surgery, through percutaneous balloon angioplasty, percutaneous Stent for the treatment method of hemadostewnosis.More than 30
Since year, Stent Implantation hemadostewnosis is quickly grown, and preferred treatment method is had become in many cases.
Pulmonary stenosis refers to that main pulmonary artery, left and right pulmonary artery and surrounding pulmonary artery have single-shot or multiple narrow,
Narrow form has limitation, segmental and diffusivity, can be one side, or bilateral, its reason be divided into it is congenital and after
Hair property.Surgical operation is always the effective treatment method of the disease, but because surgery operating wound is big, risk is high, and in art, art
The death rate is high and be restricted afterwards.Since 1980s, pulmonary artery Baloon angioplasty is applied successfully to lung and moved
The narrow PCI of arteries and veins, its wound is small, risk is low, can obviously reduce RVSP, mitigates pulmonary stenosis degree, and obtain
Preferable curative effect was obtained, but postoperative restenosis incidence, 15%~20%, patient's Long-term clinical, which is benefited, is less than 35%.
In the last few years, support placement in the treatment pulmonary stenosis was widely used in clinic, show good curative effect and
Vast potential for future development.Stent restenosis is one of major complications after lung arterial support implantation, except support in itself for
The local stimulation of blood vessel causes outside intimal proliferation, outside support relative narrowness is also main cause caused by patient's Physique growth.
Current support is generally " non-growth " structure, for children and infant patient, because blood vessel diameter increases with the age
Grow and increase, therefore also turn into an acquired narrow positions at the metallic support inserted in operation at last.Now, usually need
Balloon expandable again is carried out, causes Repeated Operation to injure patient, medical treatment cost is also increased, sufferer family is caused to sink
The financial burden of weight.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of support that can be expanded afterwards, and the support is within a certain period of time
Can again expand, be conducive to the growth of blood vessel, can effectively prevent because patient's Physique growth, blood vessel it is thicker caused by it is relatively narrow
It is narrow.
In order to solve the above-mentioned technical problem, the technical solution of the utility model be to provide it is a kind of can further expansion support, its
It is characterised by：Including intact stent is divided into two along longitudinal cutting line, formed split after two halves support；It is described
Two halves support is stitched together by degradable suture, and two halves support suture partly overlaps.
Preferably, the intact stent is the tubular structure by laser engraving.
Preferably, the two halves bracket outer provided with circumferentially, girth be more than intact stent girth fixation
Line.
Preferably, the two halves support, which has, is used to prevent the passivity edge of injured blood vessel.
Preferably, the two halves rack surface is coated with for preventing the medicine layer of neointimal hyperplasia.
It is highly preferred that the medicine layer is rapamycin, taxol, angiopeptin, nitric oxide, Batimastat or unwrapping wire
Element-D.
Preferably, the connecting rope for meeting angiogenic growth demand by length between the splitting a little of the two halves support is connected
Preferably, the intact stent is non-degradable support.
It is highly preferred that the non-degradable timbering material is stainless steel, Nitinol or cobalt-base alloys.
Preferably, the intact stent is biodegradable stent, and the degradation cycle of degradable suture is less than the complete branch
Frame.
It is highly preferred that the biodegradable bracket material is metal material or high polymer material.
Further, the metal material is magnesium alloy, ferroalloy or kirsite；The high polymer material be PLA,
Polycaprolactone, poly butyric ester, polyglycolic acid, the copolymer of polycaprolactone or PLA.
Preferably, the degradable suture can be made up of PLA or polyglycolic acid.
The utility model is will to be splitted by the support of the tubular structure of laser engraving along the longitudinal axis, and section is in two semicircles
Shape, then the two halves of support are stitched together with degradable suture, but two halves support some overlapping.When suture degraded
Afterwards, support is separated, and further expansion stenosis blood vessel, is also beneficial to the growth of blood vessel.After suture is degraded, two halves support may
Occur larger displacement and deviate stenosis.Therefore, separately there are several fixing lines circumferentially on two halves support, by two halves branch
Frame is fixed together.Fixing line girth is more than the girth of intact stent, to provide enough spaces for angiogenic growth.To prevent
Big relative shift occurs for two halves support, also can splitting a little in two halves support, increase connecting rope, the length of connecting rope should be met
The demand of angiogenic growth.
Or, intact stent is formed by PLA cutting, whole device Wholly-degradable, and the degradation cycle of suture is small
In intact stent.After suture is degraded, now two parts of support can be separated again, and carry out quadratic extension to blood vessel.
The device that the utility model is provided overcomes the deficiencies in the prior art, and quadratic extension can be carried out after the implantation, reduces
Reangiostenosis rate.The design that support is splitted, connected, separating again, it is adaptable to children and infant, increases, blood vessel with the age
Can normal growth.The passivity edge designs of support, the damage to blood vessel is small.The support expanded afterwards reduces patient and reuses ball
The probability of capsule expandable stent, reduces operation number of times, reduces the financial burden of patient family.
Brief description of the drawings
Fig. 1 be embodiment 1 in, the schematic diagram of intact stent；
Fig. 2 be embodiment 1 in, longitudinal cutting line schematic diagram of intact stent；(a) it is front view, (b) is left view；
Fig. 3 be embodiment 1 in, the two halves support schematic diagram that intact stent is divided into two, formed after splitting；(a) it is main view
Figure, (b) is left view；
Fig. 4 is in embodiment 1, two halves support passes through schematic diagram after degradable suture is sutured；(a) it is front view, (b) is a left side
View；
Fig. 5 is in embodiment 2, two halves support periphery increases schematic diagram after fixing line；
Fig. 6 be embodiment 3 in, between two halves support increase connecting rope after schematic diagram；(a) in bending when starting for connecting rope
Shape schematic diagram；(b) after being absorbed for degradable suture, connecting rope is partly stretched schematic diagram.
Embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please appended claims limited range.
Embodiment 1
A kind of support that can be expanded afterwards, as shown in figure 1, intact stent 1 is formed by laser cutting, is tied when integral support makes
Shu Hou, along longitudinal cutting line 2, intact stent 1 is divided into two, the two halves support 3,4 formed after splitting, such as Fig. 2 and Fig. 3 institutes
Show.Two halves support 3,4 after splitting can be stitched together by degradable line 5 again, and two halves support 3,4 overlaps,
As shown in Figure 4.
Intact stent 1 is stainless steel, and degradable suture 5 is polyglycolic acid.Support inserts main long-term complications
It is exactly in-stent restenosis, the injury response or foreign matter mainly due to blood vessel stimulate the increasing for causing local smoothing method myocyte
Raw, migration, extracellular matrix and collagen is excessively synthesized promote neointimal hyperplasia caused by.Therefore, the support has passivity
Edge designs, reduce during support discharges or discharge damage of the later stage to blood vessel.In addition, having Japanese yew in stent surface coated
Alcohol, can further prevent or delay the hyperplasia of inner membrance.
During use, the support in Fig. 4 is sent to narrow location by induction system, and carries out balloon expandable, to narrow blood
Pipe carries out first time expansion.The support has enough radial support power, good delivering and biocompatibility, can be successfully complete
The immediate treatment of paired stenotic lesion.With the extension of time, degradable suture is gradually absorbed by the body, now two halves support 3,
4 can separate again, and carry out quadratic extension to blood vessel.Relatively independent two halves support 3,4, is adjacent to the upper lower wall of blood vessel respectively,
Be conducive to the growth of blood vessel, prevent the narrow generation at support.
Embodiment 2
Similar to embodiment 1, except that after degradable suture is degraded, larger displacement may occur for two halves support
And deviate stenosis, therefore on support, 4 fixing lines 6 are circumferentially provided with, the girth of fixing line 6 is more than support overall week
It is long, to provide enough spaces for angiogenic growth, as shown in Figure 5.
Embodiment 3
Similar to embodiment 2, except that splitting a little in two halves support, increases connecting rope 7, when connecting rope 7 starts
In bending, after degradable suture is absorbed, connecting rope 7 can be stretched partly, and the length of connecting rope 7 should meet angiogenic growth
Demand.The design of connecting rope 7 also ensure that excessive displacement does not occur for two halves support on the premise of angiogenic growth is not influenceed,
As shown in Figure 6.
Embodiment 4
Similar to embodiment 1, except that rack body is formed by PLA cutting, whole device Wholly-degradable,
And the degradation cycle of suture is less than rack body.After suture is degraded, now two parts of support can be separated again, and to blood
Pipe carries out quadratic extension.Relatively independent two halves support 3,4, is adjacent to the upper lower wall of blood vessel, over time, support respectively
Main body is also absorbed by the body, and whole blood vessel foreign is present, and vasoinert normal growth.
Claims (10)
1. it is a kind of can further expansion support, it is characterised in that：Including an intact stent is divided into two along longitudinal cutting line, institute
Formed split after two halves support；The two halves support is stitched together by degradable suture, and two halves support suture
Partly overlap.
2. it is as claimed in claim 1 it is a kind of can further expansion support, it is characterised in that：The intact stent is by laser engraving
Tubular structure.
3. it is as claimed in claim 1 it is a kind of can further expansion support, it is characterised in that：The two halves bracket outer was provided with along week
To arrangement, girth be more than intact stent girth fixing line.
4. it is as claimed in claim 1 it is a kind of can further expansion support, it is characterised in that：The two halves support, which has, to be used to prevent
The passivity edge of injured blood vessel.
5. it is as claimed in claim 1 it is a kind of can further expansion support, it is characterised in that：The two halves rack surface is coated with
Medicine layer for preventing neointimal hyperplasia.
6. it is as claimed in claim 5 it is a kind of can further expansion support, it is characterised in that：The medicine layer is rapamycin, purple
China fir alcohol, angiopeptin, nitric oxide, Batimastat or actinin-D.
7. it is as claimed in claim 1 it is a kind of can further expansion support, it is characterised in that：Between the splitting a little of the two halves support
The connecting rope for meeting angiogenic growth demand by length is connected.
8. it is as claimed in claim 1 it is a kind of can further expansion support, it is characterised in that：The intact stent is non-degradable branch
Frame；Or the intact stent is biodegradable stent, and the degradation cycle of degradable suture is less than the intact stent.
9. it is as claimed in claim 8 it is a kind of can further expansion support, it is characterised in that：The non-degradable timbering material is not
Become rusty steel, Nitinol or cobalt-base alloys；The biodegradable bracket material is metal material or high polymer material.
10. it is as claimed in claim 1 it is a kind of can further expansion support, it is characterised in that：The degradable suture is PLA
Or polyglycolic acid is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013517.5U CN206508076U (en) | 2016-08-30 | 2016-08-30 | It is a kind of can further expansion support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013517.5U CN206508076U (en) | 2016-08-30 | 2016-08-30 | It is a kind of can further expansion support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206508076U true CN206508076U (en) | 2017-09-22 |
Family
ID=59859891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013517.5U Active CN206508076U (en) | 2016-08-30 | 2016-08-30 | It is a kind of can further expansion support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206508076U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108433852A (en) * | 2018-04-27 | 2018-08-24 | 陈智 | A kind of lung arterial support that can be expanded afterwards |
| CN112587287A (en) * | 2020-11-23 | 2021-04-02 | 北京航空航天大学 | Support and support conveying system |
| CN113101024A (en) * | 2021-04-08 | 2021-07-13 | 哈尔滨医科大学 | Pulmonary artery drug eluting stent and stent kit |
-
2016
- 2016-08-30 CN CN201621013517.5U patent/CN206508076U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108433852A (en) * | 2018-04-27 | 2018-08-24 | 陈智 | A kind of lung arterial support that can be expanded afterwards |
| CN108433852B (en) * | 2018-04-27 | 2023-10-24 | 陈智 | Pulmonary artery stent capable of being post-expanded |
| CN112587287A (en) * | 2020-11-23 | 2021-04-02 | 北京航空航天大学 | Support and support conveying system |
| CN113101024A (en) * | 2021-04-08 | 2021-07-13 | 哈尔滨医科大学 | Pulmonary artery drug eluting stent and stent kit |
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