CN105662649A - Stent type blood vessel allowing branches to be inserted and connected easily - Google Patents
Stent type blood vessel allowing branches to be inserted and connected easily Download PDFInfo
- Publication number
- CN105662649A CN105662649A CN201610123214.7A CN201610123214A CN105662649A CN 105662649 A CN105662649 A CN 105662649A CN 201610123214 A CN201610123214 A CN 201610123214A CN 105662649 A CN105662649 A CN 105662649A
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- China
- Prior art keywords
- stent
- blood flow
- main body
- sealing surface
- flow mouth
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
Abstract
The invention discloses a stent type blood vessel allowing branches to be inserted and connected easily.The stent type blood vessel comprises a tubular body blood vessel stent.A far end opening of the body blood vessel stent is sealed with a sealing face with a concave area, and a blood flow opening is formed in the sealing face.At least one blood flow linkage opening connected with an external branch blood vessel in an abutting mode is formed in the inclined face or the bottom of the concave area.By means of the stent type blood vessel, intracavity treatment for aortic aneurysm with important branches involved becomes possible; meanwhile, the surgical operation is simplified, and surgical risks are lowered.
Description
Technical field
The present invention relates to implantable vessel technical field, be specifically related to a kind of stent being prone to grafting branch.
Background technology
Aortic aneurysm refers to aorta wall local or diffused abnormal dilatation, oppresses peripheral organs and causes symptom, and danger is in that breaking of tumor body, often occurs at ascending aorta, aortic arch, thoracic descending aorta, thoracoabdominal aorta and ventral aorta.
Aortic aneurysm can be treated by operating method, it would however also be possible to employ Surgery. Adopt operating risk big, and also not all patient can bear surgical operation, adopt Surgery, make to utilize induction system that stent is transported to diseased region, utilize the elasticity of support self, making stent expand, thus being completely cut off outside the tube chamber of stent by the breach of diseased region such as aneurysm or artery dissection, completing the reparation to vascular lesion position. Bow top set's tremulous pulse (carotid artery/subclavian artery) and internal organs/renal artery is involved generally respectively due to aortic arch aortic aneurysm and thoracoabdominal aortic aneurysm, must assure that the patency of these important branch tremulous pulsies during intracavity interventional therapy, therefore intracavity rebuilds these important bifurcated arteries becomes the key of solution problem.
In prior art, stent is divided into straight type, branch/forked type etc., wherein branch/forked type intravascular stent includes integral structure and split-type structural, split-type structural is generally made up of the multiple module of main body rack and branch stent, in use, induction system first discharges main body rack, then branch stent is delivered to appointment position, docks mutually with main body rack after release.
The stent of existing split-type structural, generally arranges the socket that matches with branch stent on the sidewall of main body rack, and occupation mode is first to complete the release of main body rack by getting involved to perform the operation, and then branch stent is docked to main body rack spigot. Actual operation process finds, by the main body rack of compression by getting involved sheath pipe in the process that Ink vessel transfusing discharges, control the opening align fingers blood vessel mouth on rack side wall simultaneously, it it is the process that difficulty is very high, simultaneously very risky, if should be not aligned with on the contrary because main body rack sidewall blocks branch vessel, as: block carotid artery vascular and cause apoplexy or death, shelter from internal organs or renal artery can cause internal organs downright bad. How in aortic branch position, safely, effectively, quickly place aortic stents type blood vessel, i.e. isolation aortic aneurysm but also can guarantee that the patency of important branch blood vessel is problem demanding prompt solution.
Summary of the invention
The invention provides a kind of stent being prone to grafting branch, external branch vessel is prone to dock with main body blood vessel, reduces the difficulty getting involved operation, improves operation safety simultaneously and reduces operation risk.
The present invention is the stent of a kind of Yi Jie branch, including a tubular body intravascular stent, and, main body intravascular stent far distance port is sealed by a sealing surface with depressed area, and sealing surface is provided with blood flow mouth; On the inclined-plane of depressed area or bottom at least provided with one with external branch vessel docking be connected blood flow mouth, the sealing surface of depressed area is spigot surface.
Adopting technique scheme, owing to docking the port surface being positioned at main body intravascular stent of the blood flow mouth of external branch, as long as controlling main body rack tip position, just controlling blood flow mouth position; Easily handling due in easy developability under image instrument of the port position of support, operation process, it is easily achieved the accurate release to support port, then solve main body intravascular stent docking blood flow mouth and accurately discharge the problem to desired location, improve procedure efficiency.
Linking blood flow mouth is positioned at the depressed area of sealing surface, and depressed area inclined side forms the guiding force driving object to guide to extreme lower position in inclined-plane, and when blood flow mouth is on the side or during bottom, the cross-under thing such as auxiliary guide wire is entered blood flow mouth by guiding force.
Arrange further: above-mentioned depressed area,
Can be that sealing surface is overall to be in depression district to concave shape inside main body intravascular stent.
Or it is that sealing surface includes a depressed area to main body intravascular stent sunken inside and a plane area.
Can also be that sealing surface includes two depressed areas to main body intravascular stent sunken inside and a plane area.
Adopt technique scheme: depressed area can be adjusted design with the relative position docking branch stent in main body rack off-position. Main body blood flow mouth and linking blood flow mouth are all placed in depressed area; Only linking blood flow mouth is placed in depressed area; Linking blood flow mouth is placed in different depressed areas.
Arrange further: main body Ink vessel transfusing is provided with the built-in branch vessel being connected with blood flow mouth, and a built-in branch vessel distal head is connected with being at least connected with a blood flow mouth, and built-in branch vessel proximal head is positioned at described main body intravascular stent.
Linking blood flow mouth connects one to one with built-in branch vessel.
Built-in branch vessel proximal port extends between in main body intravascular stent proximal port, described built-in branch vessel proximal port periphery and proximal mouth and is sealed by sealing surface.
Built-in branch vessel is software artificial blood vessel or the blood vessel with support frame.
Adopt technique scheme: built-in branch vessel coordinates with the branch vessel external from blood flow mouth on the one hand, increase the stability after external branch vessel accesses, ensure that the smoothness of each blood flow blood flow on the other hand.
Built-in branch vessel, may also be configured to: built-in branch vessel proximal port extends to main body Ink vessel transfusing, is sealed by sealing surface between described built-in branch vessel proximal port periphery and main body intravascular stent medial wall.
Adopt technique scheme: the main body rack part that built-in branch vessel does not extend, Partial shrinkage diameter during main body rack compression can be reduced, reduce partial compression size.
The present invention is from the linking blood flow mouth access tributary blood vessel in far distance port, without going strictly to control the axial location of main body rack and circumference angle, without worrying the blood flow mouth not being accurately aimed at rack side wall and human body branch vessel mouth, the serious consequence causing branch's blood flow mouth to be blocked and to cause, makes operation process simple and reduces risks. Linking blood flow mouth is positioned on the depression sealing surface of main body intravascular stent far distance port, and the block pitting of sealing surface has concurrently formed guided bone when branch vessel is accessed to traction seal wire, and it is more quick that city guides traction seal wire entrance linking blood flow mouth. The method got involved by intracavity rebuilds the important aortic branch involved, and solves aortic arch aortic aneurysm and Visceral artery region aortic aneurysm. First say during use that the stent of main body Yi Jie branch puts into the near-end of bifurcated artery of getting involved. The Aortic arch aneurysm involving bow top set is placed on ascending aorta, be then passed through carotid artery, femoral artery set up respectively with easily connect branch stent type blood vessel couple track, realized the reconstruction of bifurcated artery by other stent bridge joint main body rack. To involving Visceral artery or arteriorenal thoracoabdominal aortic aneurysm, the stent of main body Yi Jie branch is placed on the descending aorta above coeliac artery, simultaneously with the stent of another piece of main body Yi Jie branch and first piece of docking, thus forming four embedded branches. Then pass through these four embedded branches to bridge with coeliac artery, superior mesenteric artery, right renal artery and left renal artery respectively, thus realizing the reconstruction of important branch and aneurysmal isolation.
Make the aortic aneurysm intracavitary therapy involving important branch be possibly realized by this invention, simplify operation technique simultaneously, reduce operation risk.
Accompanying drawing explanation
Fig. 1 is the first embodiment schematic diagram that the present invention is prone to the stent of grafting branch;
Fig. 2 is the second embodiment schematic diagram that the present invention is prone to the stent of grafting branch;
Fig. 3 is the third embodiment schematic diagram that the present invention is prone to the stent of grafting branch;
Fig. 4 is the 4th kind of embodiment schematic diagram that the present invention is prone to the stent of grafting branch;
Fig. 5 is the 5th kind of embodiment schematic diagram that the present invention is prone to the stent of grafting branch;
Fig. 6 is two and is prone to grafting branch combination schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the stent that the present invention is prone to grafting branch is described in detail.
Embodiment 1
As shown in Figure 1, the stent that the present embodiment provides, include the main body intravascular stent 1 that overlay film frame is constituted, it is centrifuged dirty one end farther out (under be called for short far-end) A at main body intravascular stent to be sealed by sealing surface 111, sealing surface 111 is to main body intravascular stent sunken inside, on inclined-plane, depressed area, there are three blood flow mouths 21,22,23 in circumference branch, respectively a main blood flow mouth 21 and two linking blood flow mouths 22,23, and main blood flow mouth diameter is more than linking blood flow diameter. Three blood flow mouth peripheries are expanded in support frame 211,221,223 support, three support frames 211,221,223 are tangent between two and connect and tangent with far distance port A periphery support respectively and be connected and prolong sealing surface 111 direction of caving in, will linking blood flow mouth stable position on the sealing surface 111 of depression.
Embodiment 2
As shown in Figure 2, the stent that the present embodiment provides, include the main body intravascular stent 1 that overlay film frame is constituted, far distance port A is sealed by sealing surface 111, sealing surface 111 is to main body intravascular stent sunken inside, on inclined-plane, depressed area, there are three blood flow mouths 21,22,23 in circumference branch, respectively a main blood flow mouth 21 and two linking blood flow mouths 22,23, and main blood flow mouth diameter is more than linking blood flow diameter. Three blood flow mouth peripheries are expanded in support frame 210,220,220 support, three support frames 210,220,220 are tangent between two and connect and tangent with far distance port A periphery support respectively and be connected and prolong sealing surface 111 direction of caving in, will linking blood flow mouth stable position on the sealing surface 111 of depression. Three are set in parallel in the endovascular built-in branch vessel 211,221,131 of main body, built-in branch vessel proximal port 212,222,232 is by support frame 2100,2200,2200 enlarging and tangent connection between two, being in same plane with proximal port C periphery and tangent be connected, between described built-in branch vessel proximal port periphery and main body intravascular stent medial wall, gap is sealed by sealing surface 130. Built-in branch vessel 211,221,131 is software artificial blood vessel or the blood vessel with support frame. Sealing surface 130 can be plane or prolong main body vessel axis direction concave or convex.
The present invention is in use, main body intravascular stent 1 discharges in vivo in advance, operation process judges main body intravascular stent 1 off-position by observing in image documentation equipment, the present invention only need to determine the cooperation position of main body intravascular stent 1 far-end location A and branch vessel mouth waiting, just the linking blood flow mouth 21,22,23 in far distance port A has been positioned. Without going strictly to control axial location and the circumference angle of main body rack, it is not necessary to worry the blood flow mouth not being accurately aimed at rack side wall and human body branch vessel mouth, cause branch's blood flow mouth to be blocked and the serious consequence that causes, make operation process simple and reduce risks.In operation process, accessing main body intravascular stent 1 of the present invention in external branch vessel and go forward, traction seal wire need to first be advanced in linking blood flow mouth 22,23, forms external branch vessel and accesses track. Linking blood flow mouth is positioned on the sealing surface 111 caved inward of main body intravascular stent far distance port, the block of sealing surface and the concave shape traction seal wire to entering in far distance port A there is guided bone, after traction seal wire touches the inclined-plane of depression sealing surface 111, inclined-plane will be prolonged to depressed area sliding, cross-under enters in the linking blood flow mouth on inclined-plane, improves the interspersed efficiency of seal wire.
Guide traction seal wire and enter linking blood flow mouth, accelerate traction seal wire and hasten with penetrating of being connected blood flow mouth, raising procedure efficiency. External branch vessel far-end discharges with being connected after blood flow mouth docks along traction seal wire, coordinates location with built-in branch vessel.
Embodiment 3
As shown in Figure 3, the stent that the present embodiment provides, the outer shroud side of the sealing surface 111 on the far distance port A of the main body intravascular stent 1 that overlay film frame is constituted, it is provided with a depressed area 112a to main body intravascular stent sunken inside, depressed area 112a is the sizing of sealing surface 111 plastic film or support frame sizing, and two linking blood flow mouths 22,23 are positioned at bottom the 112a of depressed area; Other faces, district 112 of sealing surface 111 are in a plane with far distance port A periphery, and main blood flow mouth 21 is positioned at this face, district.
Embodiment 4
As shown in Figure 3, the stent that the present embodiment provides, the outer shroud side of the sealing surface 111 of the far distance port A of main body intravascular stent 1, is provided with two depressed area 113a, 113b to main body intravascular stent sunken inside, and two linking blood flow mouths 22,23 lay respectively at bottom depressed area 113a, 113b; Other faces, district 113 of sealing surface 111 are in a plane with far distance port A periphery, and main blood flow mouth 21 is positioned at this face, district.
Embodiment 5
Embodiment as shown in Figure 5, three built-in branch vessel 211,221,131 near-end 12,222,232 ends extend in main body, are sealed by sealing surface between proximal port periphery 212,222,232 and main body intravascular stent medial wall.
Embodiment 6
Such as Fig. 3, main body blood vessel 1 can be assigned in the main body blood flow mouth of main body intravascular stent 2 far distance port A by integral installation, and combination uses, to adapt to need the diseased region demand of multiple external branches.
Claims (13)
1. the stent of a Zhong Yijie branch, including tubular body intravascular stent, it is characterised in that main body intravascular stent far distance port is sealed by a sealing surface with depressed area, and sealing surface is provided with blood flow mouth;
On the inclined-plane or bottom of described depressed area at least provided with one with external branch vessel docking be connected blood flow mouth.
2. stent as claimed in claim 1, described sealing surface is overall to be in depression district to concave shape inside main body intravascular stent.
3. stent as claimed in claim 2, it is characterised in that described blood flow mouth is two linking blood flow mouths and a main body blood flow mouth, said two linking blood flow and main body blood flow mouth are positioned on the inclined-plane of described sealing surface depressed area.
4. stent as claimed in claim 1, described sealing surface includes a depressed area to main body intravascular stent sunken inside and a plane area.
5. stent as claimed in claim 4, it is characterised in that be provided with two linking blood flow mouths and a main body blood flow mouth in described sealing surface, said two linking blood mouth stream is positioned at described depressed area, and main body blood flow mouth is positioned on described sealing surface plane area.
6. stent as claimed in claim 1, described sealing surface includes two depressed areas to main body intravascular stent sunken inside and a plane area.
7. stent as claimed in claim 4, it is characterised in that described blood flow mouth is two linking blood flow mouths and a main body blood flow mouth, said two linking blood flow mouth lays respectively in two depressed areas, and main body blood flow mouth is positioned on described sealing surface plane area.
8. the stent as described in claim 1,2,3,4,5,6,7, it is characterized in that, described main body Ink vessel transfusing is provided with the built-in branch vessel being connected with blood flow mouth, one built-in branch vessel distal head is connected with being at least connected with a blood flow mouth, and built-in branch vessel proximal head is positioned at described main body intravascular stent.
9. stent as claimed in claim 8, it is characterised in that described linking blood flow mouth connects one to one with built-in branch vessel.
10. stent as claimed in claim 8, it is characterised in that built-in branch vessel is software artificial blood vessel or the blood vessel with support frame.
11. stent as claimed in claim 8, it is characterised in that described built-in branch vessel proximal port extends between in main body intravascular stent proximal port, described built-in branch vessel proximal port periphery and proximal mouth and sealed by sealing surface.
12. stent as claimed in claim 9, it is characterised in that described built-in branch vessel proximal port extends between in main body intravascular stent proximal port, described built-in branch vessel proximal port periphery and proximal mouth and sealed by sealing surface.
13. stent as claimed in claim 8, it is characterised in that described built-in branch vessel proximal port extends to main body Ink vessel transfusing, is sealed by sealing surface between described built-in branch vessel proximal port periphery and main body intravascular stent medial wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610123214.7A CN105662649B (en) | 2016-03-05 | 2016-03-05 | A kind of stent for being easy to grafting branch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610123214.7A CN105662649B (en) | 2016-03-05 | 2016-03-05 | A kind of stent for being easy to grafting branch |
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| CN105662649A true CN105662649A (en) | 2016-06-15 |
| CN105662649B CN105662649B (en) | 2017-09-01 |
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| CN201610123214.7A Active CN105662649B (en) | 2016-03-05 | 2016-03-05 | A kind of stent for being easy to grafting branch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106109056A (en) * | 2016-07-22 | 2016-11-16 | 有研医疗器械（北京）有限公司 | A kind of multi-cavity overlay film frame and using method thereof |
| CN106798600A (en) * | 2017-01-23 | 2017-06-06 | 北京形梦信息技术有限公司 | A kind of sectional shelf-unit |
| CN106798601A (en) * | 2017-01-23 | 2017-06-06 | 北京形梦信息技术有限公司 | A kind of support |
| CN109833116A (en) * | 2017-11-24 | 2019-06-04 | 杭州唯强医疗科技有限公司 | Enhance the vascular shunt frame and intravascular stent of stability |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109833124A (en) * | 2017-11-24 | 2019-06-04 | 杭州唯强医疗科技有限公司 | Improve the vascular shunt frame and intravascular stent of development visibility |
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| CN105662649B (en) | 2017-09-01 |
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Inventor after: Guo Wei Inventor before: Guo Wei Inventor before: Ma Xiaohui |
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Effective date of registration: 20200918 Address after: 100853 Fuxing Road, Beijing, Haidian District, No. 28 Patentee after: People's Liberation Army General Hospital Address before: 28 Department of vascular surgery, PLA General Hospital, Fuxing Road, Beijing, Haidian District 100853, China Patentee before: Guo Wei |