CN102973303A - Aortic-arch covered stent-graft - Google Patents
Aortic-arch covered stent-graft Download PDFInfo
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- CN102973303A CN102973303A CN2012105586481A CN201210558648A CN102973303A CN 102973303 A CN102973303 A CN 102973303A CN 2012105586481 A CN2012105586481 A CN 2012105586481A CN 201210558648 A CN201210558648 A CN 201210558648A CN 102973303 A CN102973303 A CN 102973303A
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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
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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
- A61F2002/061—Blood vessels provided with means for allowing access to secondary lumens
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Abstract
The invention discloses an aortic-arch covered stent-graft, which comprises an aortic stent-graft and three branch artery stent-grafts, wherein a sunk part is arranged in the aortic stent-graft and comprises a left-side wall close to a proximal end, a right-side wall far away from the proximal end and a bottom wall for connecting the left-side wall with the right-side wall; two openings are arranged on one side wall in the left-side wall with the right-side wall of the sunk part, and one or two openings are arranged in the other side wall; an inner chimney graft with a caliber comparative with the openings is fixedly arranged in each opening; and the branch artery stent-grafts are respectively arranged in the chimney grafts. The stent-graft system with the structure can isolate aortic lesions involving the aortic arch and the ascending aorta and reconstruct the blood flow of branch arteries, is suitable for various normal and changing blood vessels, has a wide range of application, avoids customized stents, and can be in mass production. The time is effectively saved, and the operation is easy.
Description
Technical field
The present invention relates to the implantable vessel field, more specifically refer to a kind of aortic arch overlay film frame type blood vessel.
Background technology
Aneurysm of thoracic aorta and dissection of aorta are the calamitous diseases of serious threat broad masses of the people life, without active treatment disability rate, mortality rate height.In recent years, along with increasing of hypertension, hyperlipidemia, hyperglycemia, wound sickness rate, the sickness rate of aneurysm of thoracic aorta and dissection of aorta significantly raises.At present this is adopted aorta intra-cavity stent prothesis good effect, and obtained develop rapidly.But Aortic arch aneurysm, the dissection of aorta of involving brachiocephalic trunk, left common carotid artery and left subclavian artery opening are the difficult points of this treatment technology always.In order to guarantee that support fixedly secures endaortic, prevent that simultaneously blood flow from leaking into outside the support from proximal part or the distal end of support, the nearly heart of Intravascular stent for aorta that uses at present or distal end need at least anchorage zone of 15mm.Dangxiong harmartoma aorta or aortic dissection involving the brachiocephalic trunk, left common carotid artery and left subclavian artery opening of the aortic arch, the stents currently on the market in its treatment, the different levels of branch artery occlusion, even endovascular treatment can not.
Because 3 branch vessel sending of each patient's aortic arch: brachiocephalic trunk, left common carotid artery and left subclavian artery traveling are not quite similar, and clinically aortic arch and branch vessel thereof to walk the row variation incidence rate higher.Aortic arch send 2 branches as: right brachiocephalic trunk and left common carotid artery are done (13%) altogether, left common carotid artery is sent (9%) by right brachiocephalic trunk, a few peoples are without the brachiocephalic trunk tremulous pulse, and aortic arch directly sends 4 branches: right subclavian artery, right common carotid artery, left common carotid artery, left subclavian artery.Vertebral artery directly sends much from aortic arch, aortic arch is sent out out 4 branches like this: brachiocephalic trunk, left common carotid artery, left subclavian artery, vertebral artery (selecting from Dan Hong chief editor " clinical angiological anatomy interventional radiology tremulous pulse collection of illustrative plates ").Walk row variation in case blood vessel occurs, support and blood vessel just are not complementary, and just can not finish the intracavity repairing and treating.The aortic branch support of the special customization of anatomy that external with good grounds patient is concrete.In operation, when being implanted the aortic disease position, initiative pulse support blood vessel requires simultaneously with its side opening align fingers tremulous pulse, guarantee that the bifurcated artery blood flow is unobstructed, in bifurcated artery, implant again small rack.But this method has following shortcoming: 1, support will customize especially according to the concrete anatomy of patient, and expense is high and not can manufacture; 2, the customization support time spent longer, can not be used for the emergency operation patient; 3, complicated operation, support require each side opening to aim at exactly respectively the bifurcated artery that is involved when discharging, then may cause the bifurcated artery circulatory disorders if any deviation, corresponding complication occurs, but serious threat to life.
In addition, application publication number is that the Chinese invention patent of CN102641164A discloses a kind of branching type aortic blood guard system, comprise an initiative pulse support blood vessel and three bifurcated artery support blood vessels, the stage casing of aorta vessel is provided with depressed part, depressed part is provided with three side openings, and three bifurcated artery support blood vessels are sub-packed in three side openings.Although this branching type aortic blood guard system can completely cut off the aortic disease that involves aortic arch and ascending aorta, can rebuild the blood flow of bifurcated artery, avoid customizing support, can produce in batches and be used for emergency operation, but this aortic blood guard system need to be reserved bending and the adjustment angle of depressed part to adapt to the bifurcated artery support than large space, otherwise bifurcated artery support meeting serious distortion, pressurized and thrombosis, yet, the large then aortic stents space of its underpart, the space of depressed part narrows down accordingly, therefore aortic stents supply of blood flow amount is inevitable influenced, especially brachiocephalic trunk, in addition, for the comparatively special patient of some blood vessel travelings, such aortic blood guard system also can't be suitable for.
Summary of the invention
The invention provides a kind of aortic arch overlay film frame type blood vessel, have the shortcomings such as above-mentioned deficiency to solve existing support blood vessel.
The present invention adopts following technical scheme:
A kind of aortic arch overlay film frame type blood vessel, comprise an initiative pulse support blood vessel and three bifurcated artery support blood vessels, offer one section depressed part on the described initiative pulse support blood vessel, described depressed part comprises the left side wall near proximal part, right side wall and connection away from proximal part are left, the diapire of right side wall, the left side wall of described depressed part and one of them sidewall in the right side wall are offered two openings, another sidewall is then offered one or two opening, fix one section inner chimney support that bore is suitable with opening in each opening, described bifurcated artery support blood vessel is sub-packed in the described inner chimney support.
Above-mentioned diapire is be bent upwards circular-arc, and the cross section of described depressed part is crescent.
Further, above-mentioned inner chimney support extends along the initiative pulse support blood vessel sidewall that deviates from the depressed part direction, the outer surface of inner chimney support is coated by the first tunica vasculose, its underpart is supported fixing by the second tunica vasculose that both sides are sutured on the initiative pulse support blood vessel sidewall, the second tunica vasculose extends to the outside at inner chimney support two ends, wherein, amount to vertically upward and be sutured in the initiative pulse support blood vessel sidewall near the second tunica vasculose of depressed part one end, then be tilted to away from the second tunica vasculose of depressed part one end and amount to and be sutured on the initiative pulse support blood vessel sidewall, the two sides that the second tunica vasculose is amounted to offer the breach corresponding with the inner chimney support.
A kind of preferably embodiment, above-mentioned left side wall and right side wall are equipped with two openings, and described opening divides respectively the both sides that occupy left and right side wall top side by side.
This stent comprises that also one is used for blood vessel blocking device and bifurcated artery support blood vessel of one of them inner chimney support of shutoff, described blood vessel blocking device comprises that the caliber after propping up is slightly larger than the support of described inner chimney support, this support appearance wall is coated by a tunica vasculose, support is built-in with the part-blood periosteum, and the tunica vasculose of support two side ends is equipped with an aperture.
As the another kind of embodiment of this programme, above-mentioned left side wall is offered two openings, and right side wall is offered an opening, and two openings of left side wall divide the both sides that occupy the left side wall top side by side, the opening of right side wall and its top inscribe.
This programme also has a kind of embodiment, and namely above-mentioned left side wall is offered two openings, and right side wall is offered an opening, and two openings of left side wall divide the both sides that occupy the left side wall top side by side, the opening of right side wall and its top inscribe.
Above-mentioned initiative pulse support blood vessel and bifurcated artery support blood vessel include stainless steel stent and the tubular film that is covered on this stainless steel stent, described stainless steel stent is selected the material with good biocompatibility and support force, comprise the macromolecular material that nickel-base alloy, cobalt-base alloys, 316 medical stainless steels, marmem or degradable maybe can fall, described tubular film is poly tetrafluoroethylene, polyester fiber film, polyamide membrane or polypropylene screen.
Further, above-mentioned inner chimney support comprises the little pipe support of rustless steel and the tubular film that the plural number section equidistantly distributes, the little pipe support of described rustless steel is formed by connecting by described tubular film, and wherein, the little pipe support of rustless steel of inner chimney support that is arranged in two openings arranged side by side is mutually staggered.The spacing of the little pipe support of adjacent two rustless steels is greater than the length of the little pipe support of rustless steel.
Again further, be positioned on the tangent inner chimney support of opening part and initiative pulse support blood vessel and be positioned on the initiative pulse support blood vessel of the left and right sidewall of depressed part top peak and be equipped with a developing mark, two adjacent inner chimney supports also are provided with developing mark at the tangent position of opening, described developing mark is the proper constituent of support itself, or has good biocompatibility and the saturating material of X ray characteristic not.
By above-mentioned description to structure of the present invention as can be known, be compared with existing technology, the present invention has following advantage:
1, stent of the present invention, left and right sidewall at its depressed part is provided with three or four openings, and communicate with the inner chimney support, bifurcated artery support blood vessel selects optimum route to be implanted to three Main Branches artery blood flow passages from several inner chimney supports, does not need the anatomy customization concrete according to the patient.Initiative pulse support blood vessel of the present invention and bifurcated artery support blood vessel are independently structure of difference, be applicable to the various normal blood vessels that reach variation out of shape, can be according to the concrete condition of pathological changes, select respectively initiative pulse support blood vessel and the bifurcated artery support blood vessel of suitable dimension, be combined into the most suitable patient's support vascular system of a cover, avoid customizing support, can produce in batches, and the effect with processing ease of effectively saving time.
2, this structure stand type blood vessel can safely, effectively completely cut off and involve aortic arch and Study on Ascending Aortic Lesions, and applied widely, the support release procedure is simple.As long as Study on Ascending Aortic Lesions has certain distance apart from aortic valve and coronary ostium, this aortic arch overlay film frame type vascular system can both be effectively isolated with it, rebuild safely, easily simultaneously the bifurcated artery of aortic arch, alternative full Aortic arch replacement is performed the operation, and has avoided wound and the risk of open chest surgery.Because bifurcated artery support blood vessel is to be implanted to each bifurcated artery channel of blood flow from the left and right sidewall of depressed part, therefore, this support need not opening is aimed at one by one with each bifurcated artery channel of blood flow, when initiative pulse support blood vessel is positioned at thoracic aorta, be easy to the opening of aortic arch bifurcated artery is positioned between the left and right sidewall of depressed part.A crescent-shaped space is arranged between initiative pulse support blood vessel and the aorta wall, because above-mentioned crescent-shaped space communicates with inner chimney carrier openings and bifurcated artery opening simultaneously, so initiative pulse support blood vessel can the shutoff bifurcated artery after release, has avoided the risk of bifurcated artery ischemia.Because the existence of above-mentioned crescent-shaped space, seal wire and conduit have enough working places during intracavitary therapy, by the inner chimney carrier openings through crescent-shaped space, send into fast in the bifurcated artery, and implant bifurcated artery support blood vessel, rebuild three Main Branches artery blood flows of aortic arch passage, thereby the pathological changes that will involve aortic arch completely cuts off fully beyond this cover initiative pulse support blood vessel system, its operation is comparatively simple, has the advantages such as success rate of operation height and post-operative complication are few.
3, be connected by the inner chimney support between the initiative pulse support blood vessel of this structure stand type blood vessel and the branch vessel support, sufficiently long anchorage zone is arranged between the two stands, good stability is difficult for occuring internal fistula.The present invention creatively props up inner chimney a part that is placed in the initiative pulse support blood vessel and becomes its structure, further developing existing chimney technology, both increased the anchorage zone, rebuild the advantage of branch's blood flow, abandoned again existing chimney support and be positioned at aorta tectorial membrane stent and be extruded the shortcoming that internal fistula more easily occurs for distortion and main body aorta tectorial membrane stent outward.Grappling narrow range between present aortic arch windowing stent main body and the branch stent is compared less stable with the present invention both at home and abroad, and the displacement of internal fistula and support more easily occurs.
4, this structure stand type blood vessel, brachiocephalic trunk and left common carotid artery branch channel of blood flow can preferably be implanted bifurcated artery support blood vessel from proximal part one side, its blood flow is in liberal supply, more meet Human Physiology, the blood flow of the initiative pulse support blood vessel of depressed part below is only supplied left subclavian artery and descending aorta.
5, it is mutually staggered to be arranged in the little pipe support of rustless steel of inner chimney support of two openings arranged side by side, just is in the other side's clearance space during the tubule frame compression of two inner chimney supports, can be compressed into the small size shape, convenient operation.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the embodiment of the invention one top view;
Fig. 3 be among Fig. 2 A to cutaway view Amplified image;
Fig. 4 is the structural representation that inner chimney support of the present invention coats the second tunica vasculose;
Fig. 5 is the structural representation of blood vessel blocking device of the present invention;
Fig. 6 is that stent of the present invention discharges in thoracic aorta, and three branch vessel give the structural representation behind the bifurcated artery blood vessel;
Fig. 7 is the top view of the embodiment of the invention two;
Fig. 8 is the top view of the embodiment of the invention three.
The specific embodiment
The specific embodiment of the present invention is described with reference to the accompanying drawings.
Embodiment one
With reference to Fig. 1 and Fig. 6, a kind of aortic arch overlay film frame type blood vessel comprises an initiative pulse support blood vessel 1 and three bifurcated artery support blood vessels 2, and wherein the front portion of bifurcated artery support blood vessel 2 is designed for straight barrel type or caliber reduces to distal end gradually from proximal part.Offer one section depressed part 11 on the initiative pulse support blood vessel 1, depressed part 11 comprises near the left side wall 111 of proximal part, away from the right side wall 112 of proximal part and connect left and right sidewall 111,112 diapire 113, diapire 113 is circular-arc for what be bent upwards, left side wall 111 is equipped with two openings 12 with right side wall 112, and opening 12 divides respectively the both sides that occupy left and right side wall 111,112 tops side by side.
With reference to Fig. 2, Fig. 3 and Fig. 4, each opening 12 is interior fixes the suitable inner chimney support 13 of one section bore and opening 12, and bifurcated artery support blood vessel 2 is sub-packed in the inner chimney support 13.Inner chimney support 13 extends along initiative pulse support blood vessel 1 direction that deviates from depressed part 11 directions, the outer surface of inner chimney support 13 is coated by the first tunica vasculose, its underpart is supported fixing by the second tunica vasculose 14 that both sides are sutured on initiative pulse support blood vessel 1 sidewall, the second tunica vasculose 14 extends to the outside at inner chimney support 13 two ends, wherein, amount to vertically upward and be sutured in initiative pulse support blood vessel 1 sidewall near the second tunica vasculose 14 of depressed part 11 1 ends, be tilted to away from 14 of second tunica vasculoses of depressed part 11 1 ends and amount to and be sutured on initiative pulse support blood vessel 1 sidewall, the two sides that the second tunica vasculose 14 is amounted to offer the breach corresponding with inner chimney support 13.Smooth and easy for the ease of the implantation of bifurcated artery support blood vessel 2 and blood flow, the bottom of the inner chimney support 13 that the second tunica vasculose 14 inclined planes are corresponding with it becomes the obtuse angle design.
Continuation is with reference to Fig. 2 and Fig. 4, inner chimney support 13 comprises rustless steel tubule frame 131 and the tubular film 132 that the plural number section equidistantly distributes, rustless steel tubule frame 131 is formed by connecting by tubular film 132, wherein, it is mutually staggered to be arranged in the rustless steel tubule frame 131 of inner chimney support 13 of two openings 12 arranged side by side.The spacing of adjacent two rustless steel tubule framves 131 is greater than the length of rustless steel tubule frame 131, and the staggered distance of two inner chimney supports 13 is length poor of the spacing of adjacent two rustless steel tubule framves 131 and rustless steel tubule frame 131 just.
With reference to Fig. 5, this stent comprises that also one is used for the blood vessel blocking device 15 of one of them inner chimney support 13 of shutoff, blood vessel blocking device 15 comprises that the caliber after propping up is slightly larger than the support 151 of inner chimney support 13, these support 151 appearance walls are coated by a tunica vasculose 152, support 151 is built-in with the part-blood periosteum, the tunica vasculose 152 of support two side ends is equipped with an aperture 153, certainly also can come shutoff with existing other blood vessel blocking devices.With reference to Fig. 6, for some blood vessels patient that three branches are normally namely arranged out of shape, article three, bifurcated artery support blood vessel 2 selects optimum route to be implanted to three Main Branches artery blood flow passages from four inner chimney supports 13, wherein, brachiocephalic trunk branch channel of blood flow can be preferably implanted bifurcated artery support blood vessel 2 from proximal part one side, and 13 on another one inner chimney support stops blood flow to pass through by blood vessel blocking device 15 shutoff; For blood vessel special four branch vessel that have out of shape, then increase a bifurcated artery support blood vessel 2; In addition, if only have the patient of two branch vessel, then can respectively implant a bifurcated artery support blood vessel 2 from depressed part 11 left and right sides inner chimney supports 13,13 on two other inner chimney support is connected by another bifurcated artery support blood vessel 2.
Above-mentioned initiative pulse support blood vessel 1 and bifurcated artery support blood vessel 2 include stainless steel stent and the tubular film that is covered on this stainless steel stent, wherein stainless steel stent adopts the medical stainless steel alloy ring with good biocompatibility, chemical stability and machinery, physical property, the macromolecular material that maybe can fall such as nickel-base alloy, cobalt-base alloys, 316 medical stainless steels, marmem or degradable; And tubular film is poly tetrafluoroethylene, polyester fiber film, polyamide membrane or polypropylene screen.In addition, with reference to Fig. 3, be positioned on the tangent inner chimney support 13 of opening 12 places and initiative pulse support blood vessel 1 and be positioned on the initiative pulse support blood vessel 1 of depressed part 11 left and right sidewalls 111,112 top peaks and be equipped with a developing mark 16, in addition, an adjacent inner chimney support 13 also is provided with developing mark 16 at opening 12 tangent positions in addition, described developing mark is the proper constituent of support itself, or has good biocompatibility and the saturating material of X ray characteristic not.
Embodiment two
With reference to Fig. 7, present embodiment and embodiment one are basic identical, its main distinction is that the right side wall 112 of depressed part 11 offers an opening 12, this opening and right side wall 112 top inscribes, present embodiment is less narrower with selectivity with respect to the scope of application of embodiment one, be mainly used in the patient that aorta vessel branch does not increase, this embodiment needn't use the blood vessel blocking device 15 among the embodiment one, reduces the operation operation.
Embodiment three
With reference to Fig. 8, the difference of this embodiment and embodiment two is that the left side wall 111 of depressed part 11 offers two openings 12, and right side wall 112 is offered an opening 12.
Above-mentioned only is the specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (10)
1. aortic arch overlay film frame type blood vessel, comprise an initiative pulse support blood vessel and three bifurcated artery support blood vessels, offer one section depressed part on the described initiative pulse support blood vessel, described depressed part comprises the left side wall near proximal part, right side wall and connection away from proximal part are left, the diapire of right side wall, it is characterized in that: the left side wall of described depressed part and one of them sidewall in the right side wall are offered two openings, another sidewall is then offered one or two opening, fix one section inner chimney support that bore is suitable with opening in each opening, described bifurcated artery support blood vessel is sub-packed in the described inner chimney support.
2. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 1, it is characterized in that: described diapire is be bent upwards circular-arc, the cross section of described depressed part is crescent.
3. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 1, it is characterized in that: described inner chimney support extends along the initiative pulse support blood vessel sidewall that deviates from the depressed part direction, the outer surface of inner chimney support is coated by the first tunica vasculose, its underpart is supported fixing by the second tunica vasculose that both sides are sutured on the initiative pulse support blood vessel sidewall, the second tunica vasculose extends to the outside at inner chimney support two ends, wherein, amount to vertically upward and be sutured in the initiative pulse support blood vessel sidewall near the second tunica vasculose of depressed part one end, then be tilted to away from the second tunica vasculose of depressed part one end and amount to and be sutured on the initiative pulse support blood vessel sidewall, the two sides that the second tunica vasculose is amounted to offer the breach corresponding with the inner chimney support.
4. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 1, it is characterized in that: described left side wall and right side wall are equipped with two openings, and described opening divides respectively the both sides that occupy left and right side wall top side by side.
5. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 4, it is characterized in that: this stent comprises that also one is used for blood vessel blocking device and bifurcated artery support blood vessel of one of them inner chimney support of shutoff, described blood vessel blocking device comprises that the caliber after propping up is slightly larger than the support of described inner chimney support, this support appearance wall is coated by a tunica vasculose, support is built-in with the part-blood periosteum, and the tunica vasculose of support two side ends is equipped with an aperture.
6. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 1, it is characterized in that: described left side wall is offered two openings, right side wall is offered an opening, and two openings of left side wall divide the both sides that occupy the left side wall top side by side, the opening of right side wall and its top inscribe.
7. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 1, it is characterized in that: described left side wall is offered an opening, right side wall is offered two openings, the opening of left side wall and its top inscribe, and two openings of right side wall divide the both sides that occupy the right side wall top side by side.
8. such as the arbitrary described a kind of aortic arch overlay film frame type blood vessel of claim 1-7, it is characterized in that: described initiative pulse support blood vessel and bifurcated artery support blood vessel include the stainless steel stent with good biocompatibility and support force and the tubular film that is covered on this stainless steel stent, and described tubular film is poly tetrafluoroethylene, polyester fiber film, polyamide membrane or polypropylene screen.
9. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 1, it is characterized in that: described inner chimney support comprises the little pipe support of rustless steel and the tubular film that the plural number section equidistantly distributes, the little pipe support of described rustless steel is formed by connecting by described tubular film, wherein, it is mutually staggered to be arranged in the little pipe support of rustless steel of inner chimney support of two openings arranged side by side.
10. a kind of aortic arch overlay film frame type blood vessel as claimed in claim 9, it is characterized in that: the spacing of the little pipe support of adjacent two rustless steels is greater than the length of the little pipe support of rustless steel.
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| CN201210558648.1A CN102973303B (en) | 2012-12-21 | 2012-12-21 | Aortic-arch covered stent-graft vessel |
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| CN201210558648.1A CN102973303B (en) | 2012-12-21 | 2012-12-21 | Aortic-arch covered stent-graft vessel |
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| CN110507448A (en) * | 2019-08-22 | 2019-11-29 | 胡锡祥 | A kind of arch of aorta overlay film frame blood vessel and its application method |
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