CN111150523B - Special support for aortic branch - Google Patents
Special support for aortic branch Download PDFInfo
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- CN111150523B CN111150523B CN202010187548.7A CN202010187548A CN111150523B CN 111150523 B CN111150523 B CN 111150523B CN 202010187548 A CN202010187548 A CN 202010187548A CN 111150523 B CN111150523 B CN 111150523B
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- aortic branch
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- 238000009957 hemming Methods 0.000 claims description 18
- 239000011324 bead Substances 0.000 claims description 2
- 229920006267 polyester film Polymers 0.000 claims description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 2
- 210000001367 artery Anatomy 0.000 abstract description 46
- 210000002376 aorta thoracic Anatomy 0.000 description 21
- 210000002168 brachiocephalic trunk Anatomy 0.000 description 9
- 210000003270 subclavian artery Anatomy 0.000 description 9
- 210000000709 aorta Anatomy 0.000 description 8
- 210000001715 carotid artery Anatomy 0.000 description 8
- 238000001356 surgical procedure Methods 0.000 description 8
- 210000002489 tectorial membrane Anatomy 0.000 description 8
- 210000004204 blood vessel Anatomy 0.000 description 6
- 239000008280 blood Substances 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 5
- 229920004934 Dacron® Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 206010020772 Hypertension Diseases 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 206010002329 Aneurysm Diseases 0.000 description 1
- 206010003210 Arteriosclerosis Diseases 0.000 description 1
- 208000002251 Dissecting Aneurysm Diseases 0.000 description 1
- 208000032984 Intraoperative Complications Diseases 0.000 description 1
- 208000007474 aortic aneurysm Diseases 0.000 description 1
- 206010002895 aortic dissection Diseases 0.000 description 1
- 208000011775 arteriosclerosis disease Diseases 0.000 description 1
- 239000002473 artificial blood Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 206010008118 cerebral infarction Diseases 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 230000001631 hypertensive effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000001562 sternum Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 238000011269 treatment regimen Methods 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
-
- 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
- A61F2/92—Stents in the form of a rolled-up sheet expanding after insertion into the vessel, e.g. with a spiral shape in cross-section
-
- 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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/954—Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
Abstract
The special aortic branch support belongs to medical consumables and is arranged on an aortic support, a window is formed in the aortic support, the position of the window corresponds to at least one of three branch arteries, the special aortic branch support is embedded in the window, the special aortic branch support is tubular, one end of the special aortic branch support, which is positioned in the aortic support, is a bottom end, the bottom end is turned outwards to be a curled edge, the curled edge is attached to the inner side of the window of the aortic support, and a gap between the aortic support at the window and the special aortic branch support is blocked. The invention has novel structure, ingenious conception, strong adaptability, high success rate of operation, small possibility of operation complications, stable whole structure and long service life, and can adapt to the diameters and the intervals of various branch arteries of different patients.
Description
Technical Field
The invention belongs to the technical field of medical consumables, and particularly relates to a stent consumable placed in a branch artery of an aortic arch part in aortic arch operation.
Background
The aorta is used as a main pipeline for heart ejection, and is subjected to high blood pressure flushing pressure, particularly, the aortic arch is provided with three branches for supplying blood to the upper body of a human body, and is further subjected to heavy pressure, and for a hypertensive patient, the blood vessel at the aortic arch is easily damaged due to the impact of blood on the vessel wall, so that aortic dissection is caused, and ascending aortic aneurysm and arch aneurysm caused by cystic changes and arteriosclerosis in the aortic wall are seriously possibly caused.
There are two treatment regimens for aortic arch lesions: open surgery and interventional surgery, hybridization surgery is sometimes used in order to reduce the incidence of complications in time. The open surgery such as half-arch patch repair, full-arch replacement (traditional trunk surgery) and the like directly opens chest, cuts and repairs by surgical means, has high bleeding of a patient, serious influence on the visual field of the surgery, large trauma, high risk, low success rate of the surgery and great surgical injury to the patient; interventional operations and hybrid operations such as full arch replacement (frozen trunk operation) are combined with full arch replacement and bracket trunk technology under deep low temperature stop circulation, an intravascular trunk bracket or an artificial blood vessel is placed into a descending aorta through an aortic arch under a median sternum incision, although the requirements on operators are very high, the operation success rate is relatively high, the patient is less wounded, and the patient can break away from a dangerous period in an Intensive Care Unit (ICU) for 1-2 days after the operation is finished and enter a common ward for maintenance.
The trunk stent used in the interventional operation is arranged in an aortic arch blood vessel and supports a blood vessel wall, and comprises an aortic stent and a branch stent, wherein the aortic stent supports the aortic arch blood vessel, and the branch stent supports three branch arteries at the aortic arch. Because the aortic stent is prepared in batches in advance, but the diameters of aortic arches of different patients are different, and the diameters and the intervals of branch arteries are also different, a manufacturer cannot tailor the aortic stent according to each patient, and the unmatched aortic stent is likely to cause falling and wandering of vascular wall tissues after being placed, so that the cerebral vessel is blocked, namely cerebral infarction. In order to solve the problem, the prior patent 'novel combined aortic arch stent', application number 201820786676.1 discloses an aortic stent, wherein three standard female interfaces are arranged on the main stent, one end of the branch stent is arranged to be a standard male interface matched with the standard female interface of the main stent, the other end of the branch stent is arranged to be different diameters according to different specifications, and although the branch stent can adapt to branch arteries with different diameters of different patients to a certain extent, the stent still cannot adapt to different branch artery intervals of different patients, and in addition, the problem of 'internal leakage' of the stent with the structure still cannot be avoided, namely, blood seepage between the aortic arch and the branch arteries; the utility model provides a novel branch type tectorial membrane support in aorta, application number 201910087734.0 discloses a tectorial membrane support, wherein branch support sets up inside the aortic arch, in branch support and the arch region integral type structure of aortic arch, can solve the problem of "interior hourglass" to a certain extent, but it can't adapt to different aortic arches and branch artery diameters of different patients to and the interval of different branch arteries, in addition, branch support is located aortic arch intracavity reservation length overlength, receives long-time strong impact back of blood, easily with the unilateral diffusion of impulsive force to the arch region, reduces the life of support.
Therefore, new solutions or improvements are still needed to meet the demands.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a special bracket for aortic branch.
The technical problems to be solved by the invention are realized by the following technical scheme:
the special aortic branch stent is arranged on the aortic stent, a window is arranged on the aortic stent at least at one corresponding position of three branch arteries, the special aortic branch stent is embedded in the window, one end of the special aortic branch stent, which is positioned in the aortic stent, is tubular, the bottom end of the special aortic branch stent is turned outwards to be a curled edge, the curled edge is attached to the inner side of the window of the aortic stent, and a gap between the aortic stent and the special aortic branch stent at the window is blocked.
In the invention, the special aortic branch stent is of a reticular braided structure, is lined with polyester film, and has no film in the curled edge.
In the invention, the outer diameter of the special aortic branch stent is 8-14mm, the length of the special aortic branch stent is 30-60mm, and the curled outer diameter of the special aortic branch stent is 4-8mm larger than the outer diameter of the special aortic branch stent.
Further, the length of the special aortic branch stent is 30-40mm, and the curled edge outer diameter of the special aortic branch stent is 6-8mm larger than the outer diameter of the special aortic branch stent.
Further, the outer diameter of the special aortic branch stent is 8mm or 10mm or 12mm or 14mm, the length of the special aortic branch stent is 30mm or 40mm, and the curled outer diameter of the special aortic branch stent is 6-8mm larger than the outer diameter of the special aortic branch stent.
In the present invention, the bead is made of a memory alloy.
In the present invention, the aortic stent is a stent graft.
Based on the special aortic branch stent, the placement method comprises the following steps:
(1) Finishing the placement of the aortic stent;
(2) According to the trend of the blood vessel, placing a guide wire and a catheter into a branch artery of the aorta to be rebuilt, and entering a window of an aortic stent corresponding to the branch artery into the aortic stent to the ascending aorta;
(3) The special aortic branch stent is sent into along a guide wire, the bottom end of the special aortic branch stent passes through a window of the corresponding branch artery of the aortic branch stent, and enters into a cavity of the aortic branch stent, and then a curled edge of the special aortic branch stent is released to be naturally opened, and is stably connected with the window of the aortic branch stent;
(4) Completely releasing the special aortic branch stent and withdrawing the guide wire;
(5) And (5) repeating the steps to place other aortic branch stents according to requirements.
The combined structure of the special aortic branch stent and the aortic stent is characterized in that the special aortic branch stent is matched with the aortic stent, and any one or any two or three special aortic branch stents matched with the aortic stent are used for reconstructing any one or any two or three of three branch arteries at the aortic arch.
Compared with the prior art, the invention has novel structure and ingenious conception, and the installation position of the special aortic branch stent on the aortic stent is determined by the windowing technology, so that the stent can adapt to different branch artery distances of different patients; the multiple diameters and length specifications of the special aortic branch stent can adapt to different branch artery diameters of different patients; the hemming structure of the special aortic branch stent effectively seals the gap between the aortic stent at the window and the special aortic branch stent, so that the problem of internal leakage is avoided; the bottom end of the branch vessel is positioned in the aortic stent cavity, the special stent for aortic branching is tightly attached to the inner wall of the aortic stent cavity after being released, and the curled edge is attached to the inner wall of the aortic stent cavity, so that the impact of blood in the stent and the turbulence caused by the impact are weakened, the hemodynamic requirements are met, and the smooth implementation of interventional operation is facilitated; the structure of the joint of the aortic stent and the special aortic branch stent is effectively strengthened by the hemming structure, the stent is prevented from falling off, the hemming connecting part has abduction capability, the stable stent is not shifted, the whole structure of the aortic stent is more stable, and the service life is long.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of an aortic stent endoluminal structure;
FIG. 3 is a schematic cross-sectional view of a stent dedicated to aortic branching;
FIG. 4 is a schematic cross-sectional view of another embodiment of an aortic branch stent graft;
FIG. 5 is a schematic cross-sectional view of another embodiment of an aortic branch stent graft;
FIG. 6 is a schematic cross-sectional view of another embodiment of an aortic branch stent graft;
FIG. 7 is a schematic cross-sectional view of another embodiment of an aortic branch stent graft;
FIG. 8 is a schematic cross-sectional view of another embodiment of an aortic branch stent graft;
fig. 9 is a schematic cross-sectional structure of another embodiment of an aortic branch stent graft.
In the figure: an aortic stent 1, a special stent 2 for aortic branch, a curled edge 3 and a covered film 4.
Detailed Description
The invention is further described below in connection with the drawings and the specific preferred embodiments, but the scope of protection of the invention is not limited thereby.
Example 1
Referring to the aortic branch special stent shown in fig. 1, 2 and 3, the aortic branch special stent is arranged at the arch part of the aortic stent 1, the arch part of the aortic stent 1 is provided with windows at positions corresponding to three branch arteries, the aortic branch special stent 2 is embedded in the windows, the aortic branch special stent 2 is tubular, one end of the aortic branch special stent 2 positioned in the aortic stent 1 is the bottom end, the bottom end of the aortic branch special stent 2 is turned outwards to form a curled edge 3, the curled edge 3 is attached to the inner side of the window of the aortic stent 1, a gap between the aortic stent 1 and the aortic branch special stent 2 at the window is sealed, the aortic branch special stent 2 is of a netlike woven structure, a dacron tectorial membrane 4 is lined, and no tectorial membrane exists in the curled edge 3.
The curled edge 3 is in a plane ring shape and is attached to the inner side of a window of the aortic stent 1, the inner edge of the curled edge 3 is integrally connected with a tubular main body of the aortic branch special stent 2, and a limiting structure formed by slightly changing the pipe diameter is arranged at the joint of the aortic branch special stent 2 and the window.
In this embodiment, the aortic branch stent is applied to aortic branch artery reconstruction of a normal adult patient, three branch arteries are all reconstructed, and the outer diameter, length and spacing of the branch arteries are all selected according to actual conditions, wherein: the outer diameter of the aortic branch special stent placed in the left subclavian artery (first from left) is 12mm, the length is 30mm, the width of the hemming ring is 3mm, the outer diameter of the aortic branch special stent placed in the left carotid artery (second from left) is 12mm, the length is 40mm, the width of the hemming ring is 3mm, and the outer diameter of the aortic branch special stent placed in the innominate artery (third from left) is 10mm, the length is 40mm, and the width of the hemming ring is 3mm.
Example two
An aortic branch special stent similar to the structure of the first embodiment, but applied to aortic branch artery reconstruction of a patient in minors, three branch arteries are all required to be reconstructed, and the outer diameter, length and spacing of the branch arteries are all selected according to actual conditions, wherein: the outer diameter of the aortic branch special stent placed in the left subclavian artery (first from left) is 8mm, the length is 30mm, the width of the hemming ring is 4mm, the outer diameter of the aortic branch special stent placed in the left carotid artery (second from left) is 8mm, the length is 30mm, the width of the hemming ring is 4mm, and the outer diameter of the aortic branch special stent placed in the innominate artery (third from left) is 8mm, the length is 30mm, and the width of the hemming ring is 4mm.
Example III
A special aortic branch stent is similar to the structure of the first embodiment, but has obvious symptoms such as interlayer and rupture at the aortic arch and the branch arteries of the applied patient, the three branch arteries need to be reconstructed, the outer diameter, the length and the spacing of the branch arteries are all selected according to actual conditions, wherein: the outer diameter of the aortic branch special stent placed in the left subclavian artery (first from left) is 14mm, the length is 40mm, the width of the curled ring is 2mm, the outer diameter of the aortic branch special stent placed in the left carotid artery (second from left) is 14mm, the length is 50mm, the width of the curled ring is 2mm, and the outer diameter of the aortic branch special stent placed in the innominate artery (third from left) is 14mm, the length is 60mm, and the width of the curled ring is 2mm.
Example IV
Referring to the special aortic branch stent shown in fig. 4, the special aortic branch stent is arranged at the arch part of the aortic stent 1, a window is formed in the arch part of the aortic stent 1 at the position corresponding to two branch arteries, the special aortic branch stent 2 is embedded in the window, the special aortic branch stent 2 is tubular, one end of the special aortic branch stent 2 positioned in the aortic stent 1 is the bottom end, the bottom end of the special aortic branch stent 2 is turned outwards to form a curled edge 3, the curled edge 3 is attached to the inner side of the window of the aortic stent 1, a gap between the special aortic branch stent 1 and the special aortic branch stent 2 at the window is sealed, the special aortic branch stent 2 is of a netlike weaving structure, a dacron tectorial membrane 4 is lined, and no tectorial membrane exists in the curled edge 3.
The curled edge 3 is annular and is buckled on the inner side of a window of the aortic stent 1, the inner edge of the curled edge 3 is integrally connected with a tubular main body of the special aortic branch stent 2, the middle part of the curled edge 3 protrudes to the cavity of the aortic stent 1 to form an arc surface, and the joint of the special aortic branch stent 2 and the window is provided with a limiting structure formed by slightly changing the pipe diameter.
In this embodiment, the aortic branch special stent is applied to aortic branch artery reconstruction of a normal adult patient, two branch arteries are required to be reconstructed, namely a left subclavian artery and an innominate artery, and the outer diameter, length and spacing of the branch arteries are all selected according to actual conditions, wherein: the external diameter of the aortic branch special stent placed in the left subclavian artery (first from left) is 12mm, the length is 30mm, the width of the curled ring is 3mm, and the external diameter of the aortic branch special stent placed in the innominate artery (second from left) is 10mm, the length is 30mm, and the width of the curled ring is 3mm.
Example five
Similar to the structure of the fourth embodiment, as shown in fig. 5, there are two branch arteries to be reconstructed, which are the left subclavian artery and the left carotid artery, respectively, and the outer diameter, length and spacing of the branch arteries are all selected according to the actual situation, wherein: the external diameter of the special aortic branch stent placed in the left subclavian artery (first from left) is 12mm, the length is 30mm, the width of the curled ring is 3mm, and the external diameter of the special aortic branch stent placed in the left carotid artery (second from left) is 10mm, the length is 30mm, and the width of the curled ring is 3mm.
Example six
Similar to the structure of the fourth embodiment, as shown in fig. 6, there are two branch arteries to be reconstructed, which are the left carotid artery and the innominate artery, respectively, and the outer diameter, length and spacing of the branch arteries are all selected according to the actual situation, wherein: the outer diameter of the aortic branch special stent placed in the left carotid artery (first from left) is 10mm, the length is 30mm, the width of the curled ring is 3mm, and the outer diameter of the aortic branch special stent placed in the innominate artery (second from left) is 10mm, the length is 30mm, and the width of the curled ring is 3mm.
Example seven
Referring to the special aortic branch stent shown in fig. 7, the special aortic branch stent is arranged at the arch part of the aortic stent 1, a window is formed in the arch part of the aortic stent 1 at the position corresponding to the left cervical aorta, the special aortic branch stent 2 is embedded in the window, the special aortic branch stent 2 is tubular, one end of the special aortic branch stent 2 positioned in the aortic stent 1 is the bottom end, the bottom end of the special aortic branch stent 2 is turned outwards to form a curled edge 3, the curled edge 3 is attached to the inner side of the window of the aortic stent 1, a gap between the special aortic branch stent 1 and the special aortic branch stent 2 at the window is sealed, the special aortic branch stent 2 is of a netlike weaving structure, a dacron tectorial membrane 4 is lined, and no tectorial membrane exists in the curled edge 3.
The hemming 3 is annular and is attached to the inner side of a window of the aortic stent 1, the inner edge of the hemming 3 is integrally connected with a tubular main body of the special aortic branch stent 2, the middle part of the hemming 3 protrudes to the cavity of the aortic stent 1 to form an arc surface, the outer edge of the hemming 3 is a plane and is attached to the inner wall of the aortic stent 1, and the joint of the special aortic branch stent 2 and the window is provided with a limiting structure formed by slightly changing the pipe diameter.
In this embodiment, the aortic branch stent is applied to aortic branch artery reconstruction of a normal adult patient, and there is one branch artery to be reconstructed, namely, the left subclavian artery, and the outer diameter, length and spacing of the branch artery are all selected according to the actual situation, wherein: the external diameter of the special aortic branch stent placed in the left subclavian artery is 12mm, the length is 40mm, and the width of the curled ring is 3mm.
Example eight
Similar to the structure of the seventh embodiment, as shown in fig. 8, there is a branch artery to be reconstructed, that is, the left carotid artery, and the outer diameter, length and spacing of the branch artery are selected according to the actual situation, wherein: the external diameter of the special aortic branch stent placed in the left cervical aorta is 10mm, the length is 30mm, and the width of the curled ring is 4mm.
Example nine
An aortic branch stent, similar to the structure of the seventh embodiment, but with a longer lesion in the innominate artery at the aortic arch of the patient, needs to be reconstructed, and the outer diameter, length and spacing of the branch arteries are all selected according to the actual situation, as shown in fig. 9, wherein: the external diameter of the special aortic branch stent placed in the innominate artery is 12mm, the length is 60mm, and the width of the curled ring is 4mm.
The aortic branch special stent based on the above embodiments is placed by the following steps when applied to aortic stent placement surgery:
(1) Finishing the placement of the aortic stent;
(2) According to the trend of the blood vessel, placing a guide wire and a catheter into a branch artery of the aorta to be rebuilt, and entering a window of an aortic stent corresponding to the branch artery into the aortic stent to the ascending aorta;
(3) The special aortic branch stent is sent into along a guide wire, the bottom end of the special aortic branch stent passes through a window of the corresponding branch artery of the aortic branch stent, and enters into a cavity of the aortic branch stent, and then a curled edge of the special aortic branch stent is released to be naturally opened, and is stably connected with the window of the aortic branch stent;
(4) Completely releasing the special aortic branch stent and withdrawing the guide wire;
(5) And (5) repeating the steps to place other aortic branch stents according to requirements.
Based on the special aortic branch stent, in the combined structure of the special aortic branch stent and the special aortic branch stent, the special aortic branch stent is matched with the special aortic branch stent, and the special aortic branch stent matched with the special aortic branch stent is provided with any one or any two or three, and the special aortic branch stent is respectively used for reconstructing any one or any two or three of three branch arteries at the aortic arch.
In the invention, the placement of the aortic branch special stent is respectively completed by mutually independent blood vessels through an interventional means, so that the placement success rate of the aortic branch special stent is greatly improved, and the operation success rate of the arterial vessel reconstruction is effectively improved.
Therefore, the special aortic branch support combining the structure and the placement process is novel in structure, ingenious in conception, strong in adaptability, high in operation success rate, small in operation complication possibility, stable in support, stable in overall structure and long in service life, and can adapt to diameters and distances of various branch arteries of different patients.
Claims (6)
1. Aortic branch special stand sets up on aortic support, its characterized in that: the aortic branch special support is tubular, one end of the special support is arranged in the aortic support is the bottom end, the bottom end is turned outwards to form a curled edge, the curled edge is attached to the inner side of the window of the aortic support, and a gap between the aortic support and the special aortic branch support at the window is blocked; the branch bracket is of a reticular braided structure, is lined with polyester film, and has no film in the curled edge; the hemming is annular, is attached to the inner side of a window of the aortic stent, the inner edge of the hemming is integrally connected with a tubular main body of the special aortic branch stent, the middle part of the hemming protrudes to the cavity of the aortic stent to form an arc surface, the outer edge of the hemming is a plane, the hemming is attached to the inner wall of the aortic stent, and the joint of the special aortic branch stent and the window is provided with a limiting structure formed by slightly changing the pipe diameter.
2. The aortic branch special stent as set forth in claim 1, wherein: the outer diameter of the special aortic branch stent is 8-14mm, the length of the special aortic branch stent is 30-60mm, and the curled edge outer diameter of the special aortic branch stent is 4-8mm larger than the outer diameter of the special aortic branch stent.
3. The aortic branch special stent as set forth in claim 2, wherein: the length of the special aortic branch stent is 30-40mm, and the curled edge outer diameter of the special aortic branch stent is 6-8mm larger than the outer diameter of the special aortic branch stent.
4. A aortic branch stent graft as claimed in claim 3, wherein: the outer diameter of the special aortic branch stent is 8mm or 10mm or 12mm or 14mm, the length of the special aortic branch stent is 30mm or 40mm, and the curled edge outer diameter of the special aortic branch stent is 6-8mm larger than the outer diameter of the special aortic branch stent.
5. The aortic branch special stent as set forth in claim 1, wherein: the bead is made of a memory alloy.
6. The aortic branch special stent as set forth in claim 1, wherein: the aortic stent is a covered stent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010187548.7A CN111150523B (en) | 2020-03-17 | 2020-03-17 | Special support for aortic branch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010187548.7A CN111150523B (en) | 2020-03-17 | 2020-03-17 | Special support for aortic branch |
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| CN111150523A CN111150523A (en) | 2020-05-15 |
| CN111150523B true CN111150523B (en) | 2024-02-23 |
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