CN101433476A - Winding type bypass blood vessel - Google Patents
Winding type bypass blood vessel Download PDFInfo
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- CN101433476A CN101433476A CN 200810239397 CN200810239397A CN101433476A CN 101433476 A CN101433476 A CN 101433476A CN 200810239397 CN200810239397 CN 200810239397 CN 200810239397 A CN200810239397 A CN 200810239397A CN 101433476 A CN101433476 A CN 101433476A
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- bypass
- blood vessel
- arteries
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- type bypass
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Abstract
The invention provides a meandering type bypass blood vessel, which belongs to the technical field of biomedical engineering. In the invention, a bypass tube(2) is a meandering type bypass tube, an upper stream seam is sewed up by the 'side to end' mode, a lower stream seam is sewed up by the 'end to end' mode, and a streamlined lumen is formed on the lower stream seam, so that the impact of a bypass tube on the bottom of the artery(1) and the formed vortex in the prior bypass operation are avoided, and the blood stream in the artery is improved to be more smooth.
Description
Technical field
The present invention is a kind of winding type bypass blood vessel, belongs to the biomedical engineering technology field, relates to the artificial Coronary Artery Bypass of blood vessel.
Background technology
As everyone knows, endovascular regional flow dynamics depends on arterial vascular geometry consumingly.Coronary bypass grafting pipe bypass surgery (Coronary Artery Bypass Graft is called for short CABG) can have 26% restenosis to occur because of atherosclerotic in 1 year after surgery, causes operation to be lost efficacy.Clinical observation shows that the CABG postoperative restenosis mostly occurs near the suture zone.Cause the reason of this consequence to comprise that stitching thread is to not the matching of damage, grafts and the physiology coronarius and the mechanical property of blood vessel wall, regional flow's kinetic factor or the like.Partial high pressure, low shear stress, continue damage and hypertrophy that bigger wall shear stress gradient is indicating endotheliocyte.The planform of grafts and artery stitch is the key factor that influences the grafts long-term effectiveness.Some scholar's research grafts and stitching angle opposite joint coronarius close district regional flow effect of kinetics.Also the someone has studied different stenosis to the flow field in suture zone and downstream thereof and the influence of hemodynamic parameter.The method that also has researcher to utilize side to sew up is carried out the grafts many places and is put up a bridge.People such as Lei utilize cad technique that the grafts geometry is optimized, to improve its hemodynamics.All these work all are to improving benefiting our pursuits of Coronary Artery Bypass.
The suture way of " end offside " is adopted in general Coronary Artery Bypass downstream, this just causes the asymmetric and sharply variation of hemodynamics in coronary artery and the grafts inevitably, the impact that particularly being subjected to bottom the suture zone puts up a bridge manages blood flow is very big, thereby because of causing that vascellum endometrial hyperplasia causes vascular restenosis.
Summary of the invention
The objective of the invention is to overcome the above-mentioned drawback that traditional Coronary Artery Bypass exists, propose a kind of winding type bypass artificial blood vessel.This winding type bypass artificial blood vessel presents fusiform tube chamber, has more rational hemodynamics, can avoid atherosclerotic dangerous hemodynamics factor, thereby reduces the generation of operation restenosis.
To achieve these goals, the present invention has taked following technical scheme: on the arteries next door that needs bypass to put up a bridge, arrange the bypass bridging pipe 2 of a winding type; Upstream at arteries 1, bypass bridging pipe 2 adopts the mode of " side opposite end " to be communicated with stitching with arteries 1, in the downstream of arteries 1, bypass bridging pipe 2 adopts the mode of " end-to-end " to be communicated with stitching with arteries 1, sews up the fairshaped tube chamber of interruption-forming like this in the downstream.Bypass bridging pipe 2 can adopt artificial blood vessel or quiet (moving) arteries and veins blood vessel, also can adopt the artificial blood vessel.
Compare with existing bridging pipe, the present invention has the following advantages:
1) this winding type bypass artificial blood vessel sews up the fairshaped tube chamber of interruption-forming in the downstream;
2) this winding type bypass artificial blood vessel sews up mouth and locates to have more rational hemodynamics in the downstream;
3) this winding type bypass artificial blood vessel can reduce the generation of CABG restenosis.
Description of drawings
Fig. 1 is a structural representation of the present invention
Among the figure: 1, arteries, 2, the bypass pipe of putting up a bridge.
The specific embodiment
The present invention is described in detail below in conjunction with Fig. 1:
Such winding type bypass blood vessel can improve hemodynamics, and makes artery blood flow unimpeded.
Claims (3)
1. a winding type bypass blood vessel comprises arteries (1) and bypass bridging pipe (2), it is characterized in that: described bypass is put up a bridge and is managed (2) employing winding type bypass blood vessel; Upstream in arteries (1), bypass bridging pipe (2) adopt the mode of " side opposite end " to be connected with arteries (1), the downstream in arteries (1), and the mode of bypass bridging pipe (2) employing " end-to-end " is connected with arteries (1).
2. a kind of winding type bypass blood vessel according to claim 1 is characterized in that: described bridging pipe (2) adopts the artificial blood vessel.
3. a kind of winding type bypass blood vessel according to claim 1 is characterized in that: described bypass is put up a bridge and is managed (2) employing vein blood vessel or arteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810239397 CN101433476A (en) | 2008-12-12 | 2008-12-12 | Winding type bypass blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810239397 CN101433476A (en) | 2008-12-12 | 2008-12-12 | Winding type bypass blood vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101433476A true CN101433476A (en) | 2009-05-20 |
Family
ID=40708221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810239397 Pending CN101433476A (en) | 2008-12-12 | 2008-12-12 | Winding type bypass blood vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101433476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198023A (en) * | 2011-05-24 | 2011-09-28 | 北京航空航天大学 | Artificial blood vessel for realizing zero-angle bypass grafting |
-
2008
- 2008-12-12 CN CN 200810239397 patent/CN101433476A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198023A (en) * | 2011-05-24 | 2011-09-28 | 北京航空航天大学 | Artificial blood vessel for realizing zero-angle bypass grafting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090520 |