CN107874877A - Aorta tectorial membrane stent - Google Patents
Aorta tectorial membrane stent Download PDFInfo
- Publication number
- CN107874877A CN107874877A CN201610871765.1A CN201610871765A CN107874877A CN 107874877 A CN107874877 A CN 107874877A CN 201610871765 A CN201610871765 A CN 201610871765A CN 107874877 A CN107874877 A CN 107874877A
- Authority
- CN
- China
- Prior art keywords
- main support
- tectorial membrane
- recess
- membrane stent
- aorta tectorial
- Prior art date
- 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.)
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Classifications
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
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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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/821—Ostial stents
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/823—Stents, different from stent-grafts, adapted to cover an aneurysm
Abstract
The invention provides a kind of aorta tectorial membrane stent, it includes main support, the main support includes main support body, have on the main support body at least one recess and main support body covered with main support film, wherein, at least one through hole is provided with the main support film at recess to stretch into inside the main support for bifurcated artery support.The aorta tectorial membrane stent of the present invention can be used for treatment aortic aneurysm or dissection of aorta, can effectively reduce interior leakage, prevent that branch's blood flow from blocking and easy to operate.
Description
Technical field
The present invention relates to a kind of aorta tectorial membrane stent for being used to treat aortic aneurysm or dissection of aorta.
Background technology
In recent years, the endovascular stent-grafts exclusion technology of vascular surgery achieves huge progress, and intravascular stent is wide at present
It is general to be applied among systemic vascular diseases treatment.Difference is distributed according to lesion, different intravascular stents are primarily applicable for periphery
Vascular lesion, parteriole lesion and aortic disease etc.；According to the difference on pathology, different intravascular stents can be used for blood
Manage traumatic lesion, hemadostewnosis or restenotic lesions etc..
For aortic disease, such as aortic aneurysm and dissection of aorta, what is be currently mainly used is sustainer overlay film branch
Frame.
In the prior art, in order to not influence the blood supply of important branch blood vessel while cut is completely cut off, it will usually
Chimney support is set up in the outside of aorta tectorial membrane stent to form the blood supply pipeline of important branch blood vessel, so as to ensure to lead
The blood supply of important branch blood vessel is not influenceed while arteria covering membrane supporter covers artery dissection cut again.It is but such
Following limitation be present in design：1. during use, chimney support be located at aorta tectorial membrane stent and sustainer inwall it
Between, cause aorta tectorial membrane stent adherent loosely, so as to trigger interior leakage phenomenon；2. due to aorta tectorial membrane stent elasticity tension compared with
Chimney support is strong, easily oppresses chimney support during use for a long time, causes the channel of blood flow section that chimney support is formed to become
Small or channel of blood flow is inaccessible, so as to influence the blood circulation of important branch blood vessel, causes body region of interest ischemic；3. doctor exists
In surgical procedure, due to the special construction between chimney support and sustainer overlay film so that it is relatively difficult to place seal wire, it is difficult to lead
Enter chimney support.
Also the particularly customized window type aorta tectorial membrane stent of the specific anatomy of with good grounds patient in the prior art.In hand
During art, aorta tectorial membrane stent uplifting window, hole align fingers blood vessel thereon, then small rack is implanted into branch vessel,
To ensure the blood circulation of branch vessel.But there is also following limitation for such design：1. support is specific according to patient
Anatomy it is particularly customized, it is costly and not can manufacture, emergency operation patient can not be used for；2. complex operation, branch
Frame discharge when require window on hole be precisely directed to branch vessel respectively, may then cause if any deviation branch vessel blood flow by
Resistance.
In addition, publication No. is to also disclose a kind of arch of aorta in CN 102973303A Chinese invention patent application to cover
Membrane support type blood vessel, initiative pulse support blood vessel and bifurcated artery stented vessel are set to structure independently by it, and by
Chimney branch is placed in initiative pulse support blood vessel and is sub-packed in inner chimney as a part for its structure, bifurcated artery stented vessel
In support.Although this initiative pulse support blood vessel can rebuild branch's blood flow, avoid main body aorta tectorial membrane stent from being easier in generation
Leakage etc., avoid customization support etc., but doctor is in surgical procedure, it is difficult to the seal wire of bifurcated artery stented vessel is imported so that
Bifurcated artery stented vessel is accurately distributed into inner chimney support.
The content of the invention
In view of problem possessed by conventional aorta tectorial membrane stent, present invention aims at provide one kind can effectively subtract
Leaked in few, prevent branch's blood flow blocking and easy to operate aorta tectorial membrane stent.
To achieve these goals, the invention provides a kind of aorta tectorial membrane stent, it includes main support, the main support
Have including main support body, on the main support body at least one recess and main support body covered with main support film,
Wherein, at least one through hole is provided with the main support film at recess to stretch into inside main support for bifurcated artery support.
In the preferred embodiment of the present invention, aorta tectorial membrane stent also includes an at least seal wire, described to lead
One end of silk is stretched into inside main support through the through hole, for guiding bifurcated artery support to stretch into the master through the through hole
Internal stent.
In another preferred embodiment of the present invention, aorta tectorial membrane stent also includes the connection branch of at least one overlay film
Frame, one end of the connecting bracket is stretched into inside main support through the through hole, so that bifurcated artery support passes through the connection
Support is stretched into inside the main support.Also, aorta tectorial membrane stent is also worn including an at least seal wire, one end of the seal wire
The connecting bracket is crossed to stretch into inside main support, it is described for guiding the bifurcated artery support to stretch into through the connecting bracket
Inside main support.Preferably, the overlay film of the connecting bracket is mutually fixed each other with the main support film in the through hole, example
Such as, can mutually be fixed with the main support film by the overlay film of suture or the gluing connecting bracket.
In the embodiment of present invention further optimization, the length of part of the connecting bracket outside main support is 3
~5mm.The diameter at the position of other in addition to recess of minimum diameter of the main support at the recess and the main support it
Difference is 3~25mm.
In the embodiment of present invention further optimization, the length of recess accounts for the 10%~60% of main support length.
For example, the length of recess can be 3~5cm.
In the embodiment of present invention further optimization, the main support is braided support, and recess is by that will lead
A part of circumferential undergauge of rack body and formed, for example, the diameter ratio of the recess depth gone down of depression and main support is 1:
10~1:1.5.
In other further preferred embodiments of the present invention, the main support is laser cut stent, and recess is
Formed by a part for laser ablation main support body circumferentially side.
In the embodiment of present invention further optimization, the forward end of seal wire and rear end end are round and smooth.
The present invention has following advantageous effects relative to prior art：
In the present invention, aorta tectorial membrane stent and bifurcated artery support are structure independently, and such design can be with
Suitable for the blood vessel case of variation various normal and out of shape, the support of suitable dimension can be selected as the case may be, avoids propping up
Frame customizes, and can effectively save time and easy to operate.
Meanwhile the part using seal wire as aorta tectorial membrane stent structure, can be in order to stretching into branch in surgical procedure
Arterial bracket, it is easy to operate, solve the problems, such as to place seal wire difficulty in surgical procedure.
In addition, by making by connecting bracket to be connected between main support and bifurcated artery support, sustainer can be covered
Membrane support stability in surgical procedure is more preferable, is not susceptible to interior leakage.Because connecting bracket turns into aorta tectorial membrane stent structure
A part and one part be located inside main support, another part stretch out main support outside, can be in order to bifurcated artery support
Stretch into, while also overcome in existing chimney support technology because chimney support is located at aorta tectorial membrane stent and sustainer
The problems such as phenomenon being leaked in easily triggering between blood vessel and being easily deformed.
Brief description of the drawings
Fig. 1 a, Fig. 1 b are the schematic diagrames according to the aorta tectorial membrane stent of one embodiment of the present invention；
Fig. 2 a, Fig. 2 b are the schematic diagrames according to the aorta tectorial membrane stent of another embodiment of the present invention；
Fig. 3 is the enlarged diagram of part A in Fig. 2 a；
Fig. 4 a, Fig. 4 b, Fig. 4 c are to be used for aortic blood according to the aorta tectorial membrane stent of another embodiment of the present invention
Schematic diagram during pipe.
Embodiment
It is described in detail to various aspects of the present invention below in conjunction with the drawings and specific embodiments.Wherein, in accompanying drawing
Part be not necessarily drawn to scale, its focus on to the present invention principle be illustrated.
In various embodiments of the present invention, well-known structure or material are not shown or not elaborated.And
And described feature, structure or characteristic can combine in any way in one or more embodiments.In addition, this area
It will be appreciated by the skilled person that following various embodiments are served only for the protection model for example, not for the limitation present invention
Enclose.Can also be readily appreciated that, the part in each embodiment described herein and shown in the drawings can by a variety of different configurations or
Ratio is arranged and designed.
【First embodiment】
Fig. 1 a, Fig. 1 b are the signals according to a kind of embodiment of the aorta tectorial membrane stent of one embodiment of the present invention
Figure.
As illustrated in figs. 1A and ib, aorta tectorial membrane stent includes main support 1, and main support 1 includes main support body 11, should
Have on main support body 11 on 1 recess 13 and main support body covered with main support film 12, the main branch at recess 13
2 through holes 14 are provided with frame film to stretch into inside main support for bifurcated artery support (not shown in FIG. 1).Sustainer overlay film branch
Frame also includes 1 or 2 seal wires 2, and one end of seal wire 2 is stretched into inside main support through through hole 14, for guiding bifurcated artery branch
Frame is stretched into inside main support through through hole 14.
In the present embodiment, for example, can have 1 recess 13 on main support body, on the main support film at recess 13
It is provided with 2 through holes 14.For example, 2 seal wires 2 pass through from 2 through holes respectively, enter outside main support in main support.Main branch
The length of frame 1 is 80~240mm, and the diameter (i.e. the diameter of main support body 11) of main support 1 is 30~45mm, and recess 13 is close
The proximal part of main support, its apart from 20~150mm of proximal part of main support, apart from 20~180mm of distal end, the length of recess 13
Account for the 10%~60% of main support length, it is preferable that the length of recess 13 is 30~50mm.Minimum diameter and master at recess 13
The difference of the diameter at other positions of the support in addition to recess can be 3~25mm.Wherein, proximal part refers to the dirty near one end of centrifugation, far
Heart end refers to the dirty remote one end of centrifugation.
For example, be directed to aorta pectoralis, the length of main support can be 80~240mm, a diameter of 30~45mm, the length of recess 13
To spend for 40mm, the difference of the diameter at other positions of the minimum diameter and main support at recess 13 in addition to recess can be 5~25mm,
Proximal part 20~150mm of the recess 13 apart from main support.
For example, be directed to abdominal aorta, the length of main support can be 80~240mm, a diameter of 30~45mm, the length of recess 13
To spend for 40mm, the difference of the diameter at other positions of the minimum diameter and main support at recess 13 in addition to recess can be 5~25mm,
Proximal part 30~45mm of the recess 13 apart from main support.
In alternative embodiments, can have 2 or multiple recesses on main support, may also set up on recess 1,2,
3 or multiple through holes are to adapt to different arotic disease situations.Through hole can be located at the diverse location of recess, such as positioned at recess
Bottom (as shown in Figure 1a), or the side wall (as shown in Figure 1 b) positioned at the proximal part side of recess can also be located at other positions
Put.The quantity of seal wire can be consistent with the quantity of through hole, also can be different, and the quantity of seal wire is not more than the quantity of through hole,
A seal wire at most is passed through in each through hole, such as can be not passed through seal wire in 3 through holes, 2 seal wires, 1 through hole, or
1 seal wire or other different situations are passed through in 2 through holes, 1 seal wire, or 3 through holes, 3 seal wires, each through hole.
Also can have the seal wire of other quantity, such as 1,2,3 or more.
For example, when aorta tectorial membrane stent is used for into aorta pectoralis, 3 bifurcated artery blood vessels can be related to.Now, main support
Upper to have a recess 13, recess 13 is located at aortic arch, 3 through holes 14 is provided with recess 13, has the one of through hole 14
Towards the bifurcated artery blood vessel of aortic arch, 3 seal wires 2 pass through from this 3 through holes respectively for side.Recess 13 is removed in main support
Other positions in addition, outer wall and the aortic blood tube wall of aorta tectorial membrane stent fit, due to main support wall and active
There is no miscellaneous part between arteries and veins vascular wall, therefore aorta tectorial membrane stent is adherent more firm, will not trigger interior leakage phenomenon.
So, at recess 13, there is a long and narrow space between aorta tectorial membrane stent and aortic blood tube wall, this is narrow
Long spacing is connected with the through hole 14 on main support and bifurcated artery blood vessel simultaneously.So, after main support release, will not block
Blood flow in bifurcated artery blood vessel, when main support positions, it is only necessary to its recess 13 is positioned at into aortic arch, there is through hole
Bifurcated artery blood vessel of 14 side towards aortic arch, it is not necessary to be precisely directed to each through hole 14 at recess 13
Each bifurcated artery blood vessel, so as to significantly reduce the operation difficulty in surgical procedure, also, after the importing of bifurcated artery support,
Even if the through hole 14 on main support is not aligned with bifurcated artery blood vessel, bifurcated artery support also can be appropriate curved in the long and narrow space
Bent, adjustment angle, branch's blood flow occlusion will not be caused by severe crush.As illustrated in figs. 1A and ib, seal wire 2 can be from main branch
In the both ends of frame 1 either end nearby start to extend across through hole extend main support it is outer in.Because seal wire 2 is set in advance in master
In arteria covering membrane supporter, when discharging main support, seal wire just has already passed through through hole and bifurcated artery blood vessel is stretched into inside main support
In, bifurcated artery support can be imported and stretched into through hole in surgical procedure in order to doctor.By pre-setting seal wire,
Conduit in conveyer (device for being used to for support to be delivered to blood vessel relevant position) can be increased (to be used for storage bracket and will prop up
Frame pushes the part into blood vessel relevant position) intensity, be easy to doctor that main support is imported into blood vessel in surgical procedure.
In present embodiment, the forward end of seal wire 2 and rear end end be it is round and smooth, so as to enter aorta vessel and
It can avoid stabbing vascular wall when in bifurcated artery blood vessel.The front-end and back-end of seal wire 2 can also be made of flexible material,
So that the both ends end of seal wire is more soft, it is not easy to stab vascular wall.By the way that the both ends of seal wire 2 are done into round and smooth processing, will lead
When arteria covering membrane supporter delivers corresponding site in blood vessel and when main support expands, seal wire 2 enter in bifurcated artery blood vessel or
It will not be punctured when in aorta vessel or scratch vascular wall, reduce the risk of vascular injury.
In alternative embodiments, can also just for 2 bifurcated artery blood vessels or 1 bifurcated artery blood vessel, now,
2 or 1 through hole can be only provided with recess, it is only necessary to 2 or 1 seal wire, 2 or 1 bifurcated artery support.Through hole, lead
The quantity of silk can need and change according to specific lesion locations.
In the present embodiment, main support body is that braided support (that is, weaves the branch formed by an at least braided wires
Frame), the recess on main support body can be by the way that a part of circumferential undergauge of main support body be formed (for example, should in braiding
During support, the recess that one section of radial diameter is less than other parts is knit out), minimum diameter and the main support of the recess remove
The difference of the diameter at other positions beyond recess can be 3~25mm.
In alternative embodiments, main support body can also be laser cut stent, i.e. by laser on tubing
The support for cutting out corresponding network or other engraved structures and being formed.Recess on main support body can pass through laser ablation
Main support body circumferentially a part for side and formed, the depth gone down of recess depression can be 5~15mm, preferably
10mm。
The aorta tectorial membrane stent produced according to present embodiment, available for treatment aortic aneurysm (such as abdominal aorta
Knurl and aneurysm of thoracic aorta) and dissection of aorta rupture.
In present embodiment, main support is the support of overlay film, and main support includes main support body 11 and main support film 12, its
In, main support body 11 can be made up of Nitinol or cochrome or stainless steel, can be that self-expansion type support or sacculus expand
Type support.Main support film 12 can be made up of high polymer material or Biodegradable material.
【Second embodiment】
Fig. 2 a, Fig. 2 b are the structural representations according to the aorta tectorial membrane stent of another embodiment of the present invention；Fig. 3 is
The enlarged diagram of part A in Fig. 2 a；Fig. 4 a, Fig. 4 b, Fig. 4 c are covered according to the sustainer of another embodiment of the present invention
Membrane support is used for schematic diagram during aorta vessel.
As shown in Fig. 2 a to Fig. 4 c, aorta tectorial membrane stent includes main support 1, and main support 1 includes main support body 11, should
Have on main support body 11 on 1 recess 13 and main support body covered with main support film 12, the main branch at recess 13
2 through holes 14 are provided with frame film to stretch into inside main support (see shown in Fig. 4 a to Fig. 4 c) for bifurcated artery support 4.Sustainer covers
Membrane support also includes the connecting bracket 3 of 2 overlay films, and one end of connecting bracket 3 is stretched into inside main support through through hole 14, to divide
Branch arterial bracket 4 is stretched into inside main support by connecting bracket 3.Aorta tectorial membrane stent also includes 2 seal wires 2, and the one of seal wire 2
End is stretched into inside main support through connecting bracket 3, for guiding bifurcated artery support 4 to be stretched into by connecting bracket 3 in main support
Portion.The overlay film 32 of connecting bracket is mutually fixed each other with main support film 12 at through hole 14, for example, can pass through suture or gluing phase
It is fixed.
As shown in figure 3, in the present embodiment, can be by the way that a part of circumferential undergauge of main support body be formed into 1
Recess 13.2 through holes 14 are provided with main support film at recess 13.2 connecting brackets 3 are worn from the two through holes respectively
Cross, 2 seal wires 2 are each passed through this 2 connecting brackets 3, enter outside main support in main support.The length of main support 1 be 80~
240mm, diameter (i.e. the diameter of main support body 11) D of main support 1 are 30~45mm, the nearly heart of the recess 13 close to main support
End, it accounts for main support length apart from 20~150mm of proximal part of main support, apart from 20~180mm of distal end, the length of recess 13
10%~60%, it is preferable that the length L of recess 13 is 30~50mm, such as can be 38mm.The minimum diameter of recess and main branch
The difference Δ d of the diameter at other positions of the frame in addition to recess can be 3~25mm, such as can be 10mm.Connecting bracket 3 stretches out main branch
The length of part outside frame can be 3~5mm, it is preferable that the length that connecting bracket is stretched out outside main support is straight no more than foregoing
The difference in footpath, to ensure that the position that connecting bracket is stretched out will not be extruded blocking, and thereby guarantee that bifurcated artery support also will not
Caused branch's blood flow occlusion by severe crush.
For example, being directed to aorta pectoralis, the length of main support is 100mm, and a diameter of 35mm, the length of recess 13 is 40mm,
The difference of the diameter at other positions of the minimum diameter and main support of recess in addition to recess is 10mm, and the side for being provided with through hole is recessed
The depth sagged is 10mm, and apart from the proximal part 80mm of main support, the length that connecting bracket is stretched out outside main support is recess 13
3mm。
For example, being directed to abdominal aorta, the length of main support is 120mm, and a diameter of 40mm, the length of recess 13 is 40mm,
The difference of the diameter at other positions of the minimum diameter and main support of recess in addition to recess is 10mm, and the side for being provided with through hole is recessed
The depth sagged is 10mm, and apart from the proximal part 100mm of main support, the length that connecting bracket is stretched out outside main support is recess 13
3mm。
In alternative embodiments, can also have 2 or multiple recesses on main support, can have on recess 1,2,
3 or multiple through holes and 1,2,3 or multiple connecting brackets are to adapt to different arotic disease situations.The number of seal wire
Amount can be consistent with the quantity of through hole and the quantity of connecting bracket, also can be different, and the quantity of seal wire is not more than the number of through hole
Amount, at most a seal wire is passed through in each through hole, such as can be 3 through holes, 3 connecting brackets, 3 seal wires, each
Pass through 1 seal wire in through hole through a connecting bracket, in each connecting bracket, or 3 through holes, 2 connecting brackets, 3 lead
Silk, be not provided with connecting bracket in wherein 1 through hole but have through seal wire, or 3 through holes, 3 connecting brackets, 2 seal wires, its
In 1 connecting bracket be not passed through seal wire etc. or other different situations.Also there can be the connecting bracket of other quantity,
Such as 1,2,3 or multiple.Also can have the seal wire of other quantity, such as 1,2,3 or more.
As shown in fig. 4 a, for example, when aorta tectorial membrane stent is used for into aorta pectoralis, it is related to 3 bifurcated artery blood vessels.This
When, there is a recess 13 on main support, recess 13 is located at aortic arch, 3 through holes 14, Mei Getong are provided with recess 13
Hole respectively passes through a connecting bracket 3, the bifurcated artery blood of one end outside main support of connecting bracket 3 towards aortic arch
Pipe, 3 seal wires 2 pass through from this 3 connecting brackets respectively, and round and smooth processing is done in the forward end of seal wire 2 and rear end end, with
Avoid stabbing vascular wall when just stretching into bifurcated artery blood vessel or aorta vessel.In other portions of main support in addition to recess 13
At position, outer wall and the aortic blood tube wall of aorta tectorial membrane stent fit, due between main support wall and aortic blood tube wall
There is no miscellaneous part, therefore aorta tectorial membrane stent is adherent more firm, will not trigger interior leakage phenomenon.
So, at recess 13, there is a long and narrow space between aorta tectorial membrane stent and aortic blood tube wall, this is narrow
Long spacing is connected with the connecting bracket 3 on main support and bifurcated artery blood vessel simultaneously.So, will not after main support release
The blood flow in bifurcated artery blood vessel is blocked, when main support positions, it is only necessary to its recess 13 is positioned at aortic arch, even
Connect the direction of one end outside main support of support 3 and substantially to the bifurcated artery blood vessel of upper aortic arch, it is not necessary to will
Each through hole 14 at recess 13 is precisely directed to each bifurcated artery blood vessel, it is not required that the end of connecting bracket 3 is right exactly
Accurate each bifurcated artery blood vessel, so as to significantly reduce the operation difficulty in surgical procedure, also, bifurcated artery support imports
Afterwards, even if through hole 14 and connecting bracket 3 on main support are not aligned with bifurcated artery blood vessel, connecting bracket 3 and bifurcated artery branch
Frame also can in the long and narrow space appropriately curved, adjustment angle, the occlusion of branch blood flow will not be caused by severe crush.
Because seal wire 2 is set in advance in aorta tectorial membrane stent, when discharging main support, seal wire is just from main support
Inside is stretched into bifurcated artery blood vessel, can be imported bifurcated artery support in surgical procedure in order to doctor and be stretched into connection branch
In frame.Simultaneously as round and smooth processing is done in the both ends end of seal wire, the corresponding portion in aorta tectorial membrane stent to be delivered to blood vessel
During position and when main support expands, seal wire will not puncture or scrape blood trouble when entering in bifurcated artery blood vessel or in aorta vessel
Tube wall, reduce the risk of vascular injury.For example, seal wire 2 can since the both ends of main support 1 near either end extension simultaneously
In extending through connecting bracket outside main support.By pre-setting seal wire, conveyer can also be increased and (be used to convey on support
To the device of blood vessel relevant position) in conduit (be used for storage bracket and stent pushing is entered to the part of blood vessel relevant position)
Intensity, it is easy to doctor that main support is imported into blood vessel in surgical procedure.
As shown in figures 4 b and 4 c, in alternative embodiments, can also be just for 2 bifurcated artery blood vessels or 1
Bifurcated artery blood vessel, it now, on recess can only be provided with 2 or 1 through hole, it is only necessary to 2 or 1 connecting bracket, 2 or 1
Root seal wire, 2 or 1 bifurcated artery support.The quantity of through hole, connecting bracket and seal wire can be according to specific lesion locations needs
And change.
In the present embodiment, main support body is that braided support (that is, weaves the branch formed by an at least braided wires
Frame), the recess on main support body can be by the way that a part of circumferential undergauge of main support body be formed (for example, should in braiding
During support, the recess that one section of radial diameter is less than other parts is knit out), minimum diameter and the main support of the recess remove
The difference of the diameter at other positions beyond recess can be 3~25mm.
In alternative embodiments, main support body can also be laser cut stent, i.e. by laser on tubing
The support for cutting out corresponding network or other engraved structures and being formed.Recess on main support body can pass through laser ablation
Main support body circumferentially a part for side and formed, the depth gone down of recess depression can be 5~15mm, preferably
10mm。
The aorta tectorial membrane stent produced according to present embodiment, available for treatment aortic aneurysm (such as abdominal aorta
Knurl and aneurysm of thoracic aorta) and dissection of aorta rupture.
In present embodiment, main support and connecting bracket are the support of overlay film, and main support includes the He of main support body 11
Main support film 12, connecting bracket include connecting bracket body 31 and overlay film 32.Wherein, the sheet of main support body 11 and connecting bracket
Body 31 can be made up of Nitinol or cochrome or stainless steel, can be braided support or engraving support, can be self-expansion type branch
Frame or balloon expandable stents, main support film 12 and connecting bracket overlay film 32 can be by high polymer material or Biodegradable material systems
Into.
The term and wording used in description of the invention is just to for example, be not intended to form restriction.Ability
Field technique personnel should be appreciated that on the premise of the general principle of disclosed embodiment is not departed from, to above-mentioned embodiment
In each details can carry out various change.Therefore, protection scope of the present invention is only determined by claim, in the claims,
Unless otherwise indicated, all terms should be understood by the broadest rational meaning.
Claims (15)
1. aorta tectorial membrane stent, it is characterised in that the aorta tectorial membrane stent includes main support, and the main support includes master
Rack body, have on the main support body at least one recess and main support body covered with main support film,
Wherein, at least one through hole is provided with the main support film at the recess and stretches into the main branch for bifurcated artery support
Inside frame.
2. aorta tectorial membrane stent as claimed in claim 1, it is characterised in that the aorta tectorial membrane stent is also included at least
A piece seal wire, one end of the seal wire is stretched into inside main support through the through hole, for guiding the bifurcated artery support to wear
The through hole is crossed to stretch into inside the main support.
3. aorta tectorial membrane stent as claimed in claim 1, it is characterised in that the aorta tectorial membrane stent is also included at least
The connecting bracket of one overlay film, one end of the connecting bracket is stretched into inside main support through the through hole, so as to the branch
Arterial bracket is stretched into inside the main support by the connecting bracket.
4. aorta tectorial membrane stent as claimed in claim 3, it is characterised in that the aorta tectorial membrane stent is also included at least
A piece seal wire, one end of the seal wire is stretched into inside main support through the connecting bracket, for guiding the bifurcated artery branch
Frame is stretched into inside the main support through the connecting bracket.
5. aorta tectorial membrane stent as claimed in claim 3, it is characterised in that the overlay film of the connecting bracket and the main branch
Frame film is mutually fixed each other in the through hole.
6. aorta tectorial membrane stent as claimed in claim 5, it is characterised in that pass through suture or the gluing connection branch
The overlay film of frame is mutually fixed with the main support film.
7. aorta tectorial membrane stent as claimed in claim 3, it is characterised in that the connecting bracket is outside the main support
The length of part is 3~5mm.
8. aorta tectorial membrane stent as claimed in claim 7, it is characterised in that minimum of the main support at the recess
The difference of the diameter at the position of other in addition to recess of diameter and the main support is 3~25mm.
9. aorta tectorial membrane stent as claimed in claim 1, it is characterised in that the length of the recess accounts for main support length
10%~60%.
10. aorta tectorial membrane stent as claimed in claim 9, it is characterised in that the length of the recess is 3~5cm.
11. aorta tectorial membrane stent as claimed in claim 1, it is characterised in that the recess is by by main support body
A part of circumferential undergauge and formed.
12. aorta tectorial membrane stent as claimed in claim 1, it is characterised in that the depth and master that the recess depression is gone down
The diameter ratio of support is 1:10~1:1.5.
13. aorta tectorial membrane stent as claimed in claim 1, it is characterised in that the main support body is braided support.
14. the aorta tectorial membrane stent as described in claim 2 or 4, it is characterised in that the forward end of the seal wire and rear end
End is round and smooth.
15. aorta tectorial membrane stent as claimed in claim 1, it is characterised in that the main support body is laser cutting branch
Frame, the recess are to be formed by a part for laser ablation main support body circumferentially side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871765.1A CN107874877A (en) | 2016-09-30 | 2016-09-30 | Aorta tectorial membrane stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871765.1A CN107874877A (en) | 2016-09-30 | 2016-09-30 | Aorta tectorial membrane stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107874877A true CN107874877A (en) | 2018-04-06 |
Family
ID=61770018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610871765.1A Pending CN107874877A (en) | 2016-09-30 | 2016-09-30 | Aorta tectorial membrane stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107874877A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009562A (en) * | 2018-08-27 | 2018-12-18 | 泉州市第医院 | Follow-on arch of aorta overlay film frame type blood vessel |
| CN109700563A (en) * | 2018-12-24 | 2019-05-03 | 先健科技(深圳)有限公司 | Branch's overlay film frame |
| WO2023124901A1 (en) * | 2021-12-31 | 2023-07-06 | 先健科技(深圳)有限公司 | Lumen stent |
-
2016
- 2016-09-30 CN CN201610871765.1A patent/CN107874877A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009562A (en) * | 2018-08-27 | 2018-12-18 | 泉州市第医院 | Follow-on arch of aorta overlay film frame type blood vessel |
| CN109009562B (en) * | 2018-08-27 | 2023-11-21 | 泉州市第一医院 | Improved aortic arch tectorial membrane stent type blood vessel |
| CN109700563A (en) * | 2018-12-24 | 2019-05-03 | 先健科技(深圳)有限公司 | Branch's overlay film frame |
| CN109700563B (en) * | 2018-12-24 | 2021-02-19 | 先健科技(深圳)有限公司 | Branch covered stent |
| WO2023124901A1 (en) * | 2021-12-31 | 2023-07-06 | 先健科技(深圳)有限公司 | Lumen stent |
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