CN203802609U - Blood vessel inner membrane rack - Google Patents
Blood vessel inner membrane rack Download PDFInfo
- Publication number
- CN203802609U CN203802609U CN201320585094.4U CN201320585094U CN203802609U CN 203802609 U CN203802609 U CN 203802609U CN 201320585094 U CN201320585094 U CN 201320585094U CN 203802609 U CN203802609 U CN 203802609U
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- CN
- China
- Prior art keywords
- support
- rack
- blood vessel
- spiral
- inner membrane
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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 - Fee Related
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Abstract
The utility model relates to the field of medical treatment and especially relates to a blood vessel inner membrane rack comprising a rack formed by spiral of a memory alloy wire. The rack is cylindrical and in a spiral shape; a screw pitch of the rack is 0.2 to 2.0 mm. In the blood vessel inner membrane rack, the blood vessel inner membrane in a targeted area can be supported via the cylindrical spiral rack; the whole rack surface is smooth and without welding points; when the blood vessel inner membrane rack is introduced into the blood vessel and has a contact with the blood vessel inner wall, thrombus cannot happen; and with a fully-open loop structure, when the rack is bended, inner diameter deformation of the rack can be avoided via automatic screw pitch adjustments, so blood in bending blood vessel can smoothly flow in the rack.
Description
Technical field
This utility model relates to medical field, in particular to a kind of tunica intima support.
Background technology
Intravascular stent refers on the basis being shaped at tube chamber balloon expandable, at lesion region Stent Implantation, to reach the blood vessel that supports stenosis occlusion region, reduces blood vessel elasticity retraction and moulding again, keeps the unobstructed object of tube chamber blood flow.
At present, adopt of the intravascular stent outside intracranial has cancellated metal net more; Having cancellated metal net is by the infall of many bonding jumpers is welded.But, in correlation technique, this metal net is inserted after the lesion region of blood vessel, because cancellated metal net is rough, there are a plurality of solder joints; A plurality of solder joints are close to after tunica intima, easily cause the formation of thrombosis.
Utility model content
The purpose of this utility model is to provide a kind of tunica intima support, to solve the above problems.
A kind of tunica intima support is provided in embodiment of the present utility model, has comprised the support being formed by a memory alloy wire spiral; Described support is cylindric spiral type, and the pitch of described support is 0.2-2.0 millimeter.
The support of a kind of tunica intima support of this utility model above-described embodiment for a memory alloy wire spiral is formed, and the pitch of support is 0.2 millimeter-2.0 millimeters; Like this, in as tunica intima support, because support is formed by a memory alloy wire spiral, and it is cylindric spiral type; The support of cylindrical helical shape can be played a supporting role to the tunica intima of target area; And because support is formed by a memory alloy wire spiral, so the surface of whole support is smooth, there is no solder joint; In it imports blood vessel and while contacting with blood vessel, be difficult for causing the formation of thrombosis.
In addition, due to this support of the present utility model twist, be complete open loop structure, when crooked, by spontaneous adjusting pitch, can avoid shelf inner diameter to be out of shape, and then can better ensure blood flow patency in support at very crooked vascular site.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the tunica intima support that this utility model embodiment mono-and embodiment bis-provide.
The specific embodiment
Below by specific embodiment, also by reference to the accompanying drawings this utility model is described in further detail.
Embodiment mono-
Please refer to Fig. 1, a kind of tunica intima support is provided in embodiment of the present utility model, comprise the support 101 being formed by a memory alloy wire spiral; Described support 101 is cylindric spiral type, and the pitch of described support 101 is 0.2 millimeter-2.0 millimeters.
The support 101 of a kind of tunica intima support 101 of this utility model above-described embodiment for being formed by a memory alloy wire spiral, and the pitch of support 101 is 0.2 millimeter-2.0 millimeters; Like this, in as tunica intima support, because support 101 is formed by a memory alloy wire spiral, and it is cylindric spiral type; The support 101 of cylindrical helical shape can be played a supporting role to the tunica intima of target area; And because support 101 is formed by a memory alloy wire spiral, so the surface of whole support 101 is smooth, there is no solder joint; In it imports blood vessel and while contacting with blood vessel, be difficult for causing the formation of thrombosis, also without the risk of falling apart.
In addition, the support 101 of the present embodiment is complete open loop structure, when crooked, by changing pitch, can keep the internal diameter of support 101 indeformable, and then can better ensure the patency of blood flow.
Because support is stretching in induction system, relatively soft, so this support is easily by vascular bending place, and indeformable while being positioned over vascular bending place, be therefore suitable for very much vascular bending position.
In order to make the tunica intima support of this utility model embodiment mono-, better applied, more effectively be applied in medical treatment, this utility model also provides embodiment bis-on the basis of above-described embodiment one, embodiment bis-is further restriction and the increases to making on the architecture basics of embodiment mono-, is now described in detail and explains:
Embodiment bis-
Please refer to Fig. 1, in the present embodiment, when support 101 will be inserted in blood vessel, need to be in advance that the support being formed by memory alloy wire spiral 101 is stretching, and then insert the target area of blood vessel.Therefore, for the support 101 that guarantees to be straightened, insert after blood vessel, it can have extraordinary elastical retraction function, so preferred, the diameter of memory alloy wire is 0.2 millimeter-1.0 millimeters; Diameter is that after 0.2 millimeter of-1.0 millimeters of memory alloy wire is straightened, it has good elastical retraction performance, and then can form cylindric spiral support 101.
In addition,, in order to make the interior membrane support of the present embodiment can there is practicality widely, can be common to the outer blood vessel of intracranial and cranium; Optionally, in the present embodiment, the screw diameter of support 101 is 1.5 millimeters-9 millimeters; Concrete, can select to have according to different blood vessels the support of different screw diameters.
When needs are inserted in blood vessel by support 101, need first one end of support 101 to be inserted in blood vessel.Therefore,, in this enforcement, for the ease of operation, further, one end of support 101 is provided with seal wire 102; Under the effect of seal wire 102, the whole support being straightened 101 can be inserted in blood vessel, preferred, in the present embodiment, select soft tinsel not easy to break to make seal wire 102; Certainly, the length of seal wire 102 is also unsuitable oversize, in order to avoid tunica intima is caused to adverse influence after inserting blood vessel, therefore, preferred, in the present embodiment, the length of seal wire 102 is 2.0-8.0 millimeter.
To a certain extent, the length of support 101 and the ratio of its pitch have determined the integrated support effect of whole support 101, in the present embodiment in order to guarantee that support 101 has good elastically-deformable function (being memory alloy wire recovery deformation the process that becomes helical stent 101), further, the length of support 101 and the ratio >=3:1 of its pitch.
In the present embodiment, can select for different blood vessels the spiral way of support 101, or can select the support 101 with different spiral way to apply mechanically; In the present embodiment, support 101 is left hand helix or support 101 is right-handed helix.
In addition, also it is to be noted, this tunica intima support that this utility model embodiment provides, also be easy to be arranged in the blood vessel with a plurality of branches, " Y " type blood vessel for example, the support 101 an of the present embodiment is installed in each bifurcation of blood vessel and just can be realized support blood vessels and guarantee the effect that blood flow is unobstructed, traditional metal knitted netted support 101 is difficult to realize install at " Y " type blood vessel.
In sum, the support 101 of the present embodiment is formed by a memory alloy wire spiral, and whole support 101 does not have solder joint and backbone metal than (being the ratio of backbone metal area occupied and its area coverage.This value is less, is more difficult for stopping branch's blood flow and tunica intima growth.Normal support covers after angiostenosis section, and tunica intima can be climbed and be covered rack bore half a year, played fixed support and made the effect that support inner surface is smooth.And support inner surface forms histocompatibility after smooth tunica intima and improves, being difficult for stimulating platelet piles up, formation thrombosis) indeformable after low, complete open loop, bending, cover is put and is not affected vessel diameter, thereby be highly suitable for medium and small angiostenosis, vascular bifurcation place is narrow, curved blood vessel is narrow, even, when pitch is 0, can be used as blood flow guider for shutoff hemangioma.
In addition, in the present embodiment, because the metal of support 101 is than low, tunica intima is more easily grown and is covered rack surface; Seal wire 102 is fixed on the tip of support 101, and this support 101 discharges without other micro-wire guiding, has avoided support 101 to discharge the rear risk that causes support 101 displacements because withdrawing from micro-wire.
In addition, the support 101 of the present embodiment is complete open loop structure, in a plurality of vessel branches, respectively discharge one piece of support 101 in the same way, at tail end overlapping because spiral in the same way support 101 is parallel to each other, therefore, can not dwindle support 101 internal diameters, thereby not affect the shape of support 101, and the internal diameter of support 101 is constant.Therefore, this support 101 can be positioned over vascular bifurcation place.
If need again place at same position one piece of support 101, even if place reverse acting spiral shape support, support 101 intersection point numbers are also far less than traditional network, and support 101 internal diameter slips are significantly less than network.Therefore the support 101 of the present embodiment can repeatedly discharge at same position.
The present embodiment support 101 can be a straight tinsel in vitro, discharges after delivering into target area by special stand induction system, and the memory effect by memory wire bends to set shape voluntarily.Whole transportation medium-height trestle 101 is for keeping straight on, and therefore easily by vascular bending position, can be conveyed into 2 grades of blood vessel far-ends and with upper part.
Finally, the pitch of the support 101 of the present embodiment can also be 0, and when pitch is 0, this support 101 can be used for hemangioma shutoff, becomes blood flow guider.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. tunica intima support, is characterized in that, comprises the support being formed by a memory alloy wire spiral;
Described support is cylindric spiral type, and the pitch of described support is 0.2 millimeter-2.0 millimeters;
The diameter of described memory alloy wire is 0.2 millimeter-1.0 millimeters; The screw diameter of described support is 1.5 millimeters-9 millimeters;
One end of described support is provided with seal wire; The length of described seal wire is 2.0 millimeters-8.0 millimeters; The length of described support and the ratio >=3:1 of described pitch.
2. tunica intima support according to claim 1, is characterized in that, described support is left hand helix.
3. tunica intima support according to claim 1, is characterized in that, described support is right-handed helix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585094.4U CN203802609U (en) | 2013-09-22 | 2013-09-22 | Blood vessel inner membrane rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585094.4U CN203802609U (en) | 2013-09-22 | 2013-09-22 | Blood vessel inner membrane rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203802609U true CN203802609U (en) | 2014-09-03 |
Family
ID=51441426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320585094.4U Expired - Fee Related CN203802609U (en) | 2013-09-22 | 2013-09-22 | Blood vessel inner membrane rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203802609U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888391A (en) * | 2018-07-12 | 2018-11-27 | 北京龙慧珩医疗科技发展有限公司 | A kind of non-crossing bracket of monofilament |
| CN110859998A (en) * | 2019-12-18 | 2020-03-06 | 上海畅迪医疗科技有限公司 | Anti-kink artificial blood vessel and preparation method thereof |
| CN111228003A (en) * | 2020-01-13 | 2020-06-05 | 李功俊 | Nickel-titanium alloy stent for treating megacolon disease |
| CN113907831A (en) * | 2021-09-24 | 2022-01-11 | 复旦大学 | Spiral micro-robot based on memory alloy |
-
2013
- 2013-09-22 CN CN201320585094.4U patent/CN203802609U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888391A (en) * | 2018-07-12 | 2018-11-27 | 北京龙慧珩医疗科技发展有限公司 | A kind of non-crossing bracket of monofilament |
| CN110859998A (en) * | 2019-12-18 | 2020-03-06 | 上海畅迪医疗科技有限公司 | Anti-kink artificial blood vessel and preparation method thereof |
| CN111228003A (en) * | 2020-01-13 | 2020-06-05 | 李功俊 | Nickel-titanium alloy stent for treating megacolon disease |
| CN113907831A (en) * | 2021-09-24 | 2022-01-11 | 复旦大学 | Spiral micro-robot based on memory alloy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20210922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |