CN212281770U - Special aortic branch stent and combined structure of special aortic branch stent and aortic stent - Google Patents
Special aortic branch stent and combined structure of special aortic branch stent and aortic stent Download PDFInfo
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- CN212281770U CN212281770U CN202020335451.1U CN202020335451U CN212281770U CN 212281770 U CN212281770 U CN 212281770U CN 202020335451 U CN202020335451 U CN 202020335451U CN 212281770 U CN212281770 U CN 212281770U
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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 located in the aortic support, is a bottom end, the bottom end is turned outwards to form a turned edge, the turned edge is attached to the inner side of the window of the aortic support, and a gap between the special aortic branch support and the aortic support at the window is blocked. The invention has novel structure, ingenious conception, strong adaptability, high success rate of operation, small possibility of operation complication, stable and difficult falling off of the bracket, stable integral 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 utility model belongs to the technical field of medical consumables, specifically be a put in aortic arch portion branch artery's support consumptive material of aortic arch operation.
Background
The aorta is used as a main pipeline of heart blood ejection, high blood pressure scouring pressure is borne, particularly, the aortic arch has three branches for blood supply of the upper half of a human body and bears heavy pressure, and for a hypertensive patient, blood vessels at the aortic arch are easy to damage due to blood impact on blood vessel walls, so that aortic dissection is caused, and ascending aortic aneurysm and arch aneurysm caused by cystic fibrosis and arteriosclerosis in the aortic wall are seriously caused.
There are two treatment regimens for aortic arch lesions: open surgery and interventional surgery, sometimes hybrid surgery is employed in order to reduce the incidence of complications in a timely manner. Wherein, open surgery such as repair of a half-arch patch, total-arch replacement (traditional trunk surgery) and the like is directly performed by thoracotomy, and cutting and repair are performed by surgical means, so that the patient has high bleeding amount, serious influence on the surgical visual field, large wound, high risk, low surgical success rate and great surgical injury to the patient; interventional surgery and hybrid surgery such as total arch replacement (frozen trunk surgery) and combined total arch replacement and support trunk technology under deep low temperature and circulatory arrest are to place an intravascular trunk support or an artificial blood vessel into descending aorta through an aortic arch under a sternal median incision, although the requirement on a patient is high, the success rate of the surgery is relatively high, the patient suffers little trauma, and the patient can be separated from a dangerous period and enter a general ward for maintenance in an Intensive Care Unit (ICU) for 1-2 days after the surgery is completed.
The trunk support is arranged in an aortic arch blood vessel to support the vessel wall and comprises an aortic support and branch supports, wherein the aortic support supports the aortic arch blood vessel, and the branch supports support three branch arteries at the aortic arch. Because the aortic stent is manufactured in batches in advance, but the aortic arches of different patients have different diameters and the intervals of the branch arteries are also different, manufacturers cannot customize the aortic stent according to each patient, and unmatched aortic stents are implanted to possibly cause the falling and the migration of vascular wall tissues, so that the blockage of cerebral vessels, namely cerebral infarction, is caused. In order to solve the problem, a novel combined aortic arch stent, application No. 201820786676.1, of the prior patent discloses an aortic stent, three standard female interfaces are arranged on a main stent, one end of a branch stent is set to be a standard male interface matched with the standard female interface of the main stent, the other end of the branch stent is set to be different diameters according to different specifications, although the stent can adapt to the branch arteries with different diameters of different patients to a certain extent, the stent still cannot adapt to the different branch artery intervals of different patients, and in addition, the stent with the structure still cannot avoid the problem of internal leakage, namely blood seepage between the aortic arch and the branch arteries; current patent "a novel branch type tectorial membrane support in aorta", application number 201910087734.0 discloses a tectorial membrane support, wherein the branch support sets up inside the aortic arch, interior branch support and the bow-shaped district integral type structure of aortic arch can solve "interior hourglass" problem to a certain extent, but its different aortic arches and the branch artery diameter that can't adapt to different patients, and the interval of different branch arteries, in addition, branch's support is located aortic arch intracavity and reserves length overlength, receive the strong impact back of blood for a long time, with the easy diffusion of impulsive force folk prescription to bow-shaped district, reduce the life of support.
Therefore, there is still a need for new or improved solutions to address the needs.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a special aortic branch stent.
The to-be-solved technical problem of the utility model is realized through following technical scheme:
the special support of aorta branch sets up on the aorta support the utility model discloses in, it has the window to open in the position that three branch artery at least one department corresponds on the aorta support, and the special support of aorta branch inlays to be established in the window, and the special support of aorta branch is the tubulose, and its one end that is located the aorta support is the bottom, and the bottom turns up to the turn-up, and the turn-up is attached inboard at the window of aorta support, blocks up the gap between window department aorta support and the special support of aorta branch.
The utility model discloses in, aorta branch special stand is netted braided structure, inside lining dacron tectorial membrane, does not have the tectorial membrane in the turn-up.
In the utility model, the external diameter of the special aortic branch stent is 8-14mm, the length of the special aortic branch stent is 30-60mm, and the external diameter of the turned edge of the special aortic branch stent is 4-8mm larger than that of the special aortic branch stent.
Furthermore, the length of the special aortic branch stent is 30-40mm, and the crimping outer diameter of the special aortic branch stent is 6-8mm larger than that of the special aortic branch stent.
Furthermore, 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 crimping 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 turned edge 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 arrangement of the aortic stent;
(2) according to the trend of blood vessels, a guide wire and a catheter are placed at a branch artery to be reconstructed of an aortic arch, pass through a window of an aortic stent and enter the aortic stent;
(3) feeding the special aortic branch stent along the guide wire, wherein the bottom end of the special aortic branch stent penetrates through a window of a branch artery corresponding to the aortic branch stent and enters into the aortic stent cavity, and then releasing the curled edge of the special aortic branch stent to enable the special aortic branch stent to be naturally opened, wherein the curled edge is stably connected with the window of the aortic stent;
(4) completely releasing the special aortic branch stent and withdrawing the guide wire;
(5) repeating the above steps to place other aortic branch stents according to the requirement.
The special aortic branch stent is matched with the aortic stent for use, any one or any two or three of the special aortic branch stents matched with the aortic stent are provided, and the special aortic branch stents are respectively used for reconstructing any one or any two or three of three branch arteries at the aortic arch.
Compared with the prior art, the utility model 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 special aortic branch stent has various diameters and length specifications and can adapt to different branch artery diameters of different patients; the crimping structure of the special aortic branch stent effectively seals a gap between the special aortic branch stent and the special aortic branch stent at the window, and avoids the problem of internal leakage; the length of the bottom end of the branch vessel in the aorta stent cavity is very short, after the branch vessel is released, the special aorta branch stent is tightly attached to the inner wall of the aorta, and the curled edge is attached to the inner wall of the aorta stent cavity, so that the impact of blood in the stent and the further induced turbulence are weakened, the hemodynamic requirements are met, and the smooth operation of an interventional operation is facilitated; the crimping structure effectively strengthens the structure of the joint of the aortic stent and the aortic branch special stent, prevents the stent from falling off, has abduction capacity with the crimping connecting part, stabilizes the stent without displacement, and ensures that the whole structure of the aortic stent is more stable and has long service life.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the endovascular structure of the aortic stent;
FIG. 3 is a schematic cross-sectional view of the stent dedicated for aortic branch;
FIG. 4 is a schematic cross-sectional view of another embodiment of the stent dedicated for aortic branching;
FIG. 5 is a schematic cross-sectional view of another embodiment of the stent dedicated for aortic branching;
FIG. 6 is a schematic cross-sectional view of another embodiment of the stent dedicated for aortic branching;
FIG. 7 is a schematic cross-sectional view of another embodiment of the stent dedicated for aortic branching;
FIG. 8 is a schematic cross-sectional view of another embodiment of the stent dedicated for aortic branching;
fig. 9 is a schematic cross-sectional structure view of another embodiment of the stent dedicated to aortic branch.
In the figure: the main artery stent comprises an aorta stent 1, an aorta branch special stent 2, a crimping edge 3 and a coating film 4.
Detailed Description
The invention will be further described with reference to the drawings and specific preferred embodiments without limiting the scope of the invention.
Example one
Referring to the aorta branch special stent shown in fig. 1, 2 and 3, the aorta branch special stent is arranged at the arch part of an aorta stent 1, a window is formed in the arch part of the aorta stent 1 at the position corresponding to three branch arteries, the aorta branch special stent 2 is embedded in the window, the aorta branch special stent 2 is tubular, one end of the aorta branch special stent 2 located in the aorta stent 1 is the bottom end, the bottom end of the aorta branch special stent 2 is turned outwards to form a turned edge 3, the turned edge 3 is attached to the inner side of the window of the aorta stent 1 to block a gap between the aorta stent 1 and the aorta branch special stent 2 at the window, the aorta branch special stent 2 is of a net weaving structure, a dacron covering film 4 is lined, and no covering film.
The curled edge 3 is in a plane ring shape and is attached to the inner side of the window of the aortic stent 1, the inner edge of the curled edge 3 is integrally connected with the tubular main body of the aortic branch special stent 2, and the joint of the aortic branch special stent 2 and the window is provided with a limiting structure formed by slightly changing the pipe diameter.
In this embodiment, the aortic branch dedicated stent is applied to aortic branch artery reconstruction of a normal adult patient, three branch arteries all need to be reconstructed, and the outer diameter, length and spacing of the branch arteries are selected according to actual conditions, wherein: the outer diameter of the special aortic branch stent placed in the left subclavian artery (first from left) is 12mm, the length is 30mm, and the width of the crimping ring is 3mm, the outer diameter of the special aortic branch stent placed in the left carotid artery (second from left) is 12mm, the length is 40mm, the width of the crimping ring is 3mm, the outer diameter of the special aortic branch stent placed in the innominate artery (third from left) is 10mm, the length is 40mm, and the width of the crimping ring is 3 mm.
Example two
An aorta branch special stent is similar to the structure of the first embodiment, but is applied to the aortic branch artery reconstruction of a patient with minor, three branch arteries are required to be reconstructed, and the outer diameter, length and spacing of the branch arteries are selected according to actual conditions, wherein: the outer diameter of the special aortic branch stent placed in the left subclavian artery (first from left) is 8mm, the length is 30mm, and the width of the crimping ring is 4mm, the outer diameter of the special aortic branch stent placed in the left carotid artery (second from left) is 8mm, the length is 30mm, the width of the crimping ring is 4mm, the outer diameter of the special aortic branch stent placed in the innominate artery (third from left) is 8mm, the length is 30mm, and the width of the crimping ring is 4 mm.
EXAMPLE III
An aorta branch special stent is similar to the structure of the first embodiment, but the aortic arch and branch arteries of a patient have obvious symptoms of dissection, rupture and the like, and need to be reconstructed, all three branch arteries need to be reconstructed, and the outer diameter, length and spacing of the branch arteries are selected according to actual conditions, wherein: the external diameter of the special aortic branch stent placed in the left subclavian artery (first from left) is 14mm, the length is 40mm, and the width of the crimping ring is 2mm, the external diameter of the special aortic branch stent placed in the left carotid artery (second from left) is 14mm, the length is 50mm, and the width of the crimping ring is 2mm, the external diameter of the special aortic branch stent placed in the innominate artery (third from left) is 14mm, the length is 60mm, and the width of the crimping ring is 2 mm.
Example four
Referring to fig. 4, the special aortic branch stent is arranged at an arch part of an aortic stent 1, the arch part of the aortic stent 1 is provided with a window at a 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 1 is a bottom end, the bottom end of the special aortic branch stent 2 is turned outwards to form a turned edge 3, the turned edge 3 is attached to the inner side of the window of the aortic stent 1 to seal a gap between the special aortic stent 1 and the special aortic branch stent 2 at the window, the special aortic branch stent 2 is of a mesh weaving structure, a lining terylene cover film 4 is arranged in the turned edge 3, and no cover film is arranged in the turned edge 3.
The crimping 3 is annular and is buckled at the inner side of a window of the aortic stent 1, the inner edge of the crimping 3 is integrally connected with a tubular main body of the aortic branch special stent 2, the middle part of the crimping 3 protrudes towards the cavity of the aortic stent 1 to form an arc surface, 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 dedicated stent is applied to aortic branch artery reconstruction of a normal adult patient, two branch arteries need 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 special aortic branch stent placed in the left subclavian artery (first from the left) is 12mm, the length is 30mm, the width of the crimping ring is 3mm, the external diameter of the special aortic branch stent placed in the innominate artery (second from the left) is 10mm, the length is 30mm, and the width of the crimping ring is 3 mm.
EXAMPLE five
An aorta branch dedicated stent is 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 selected according to actual conditions, wherein: the external diameter of the special aortic branch stent placed in the left subclavian artery (first from the left) is 12mm, the length is 30mm, the width of the crimping ring is 3mm, the external diameter of the special aortic branch stent placed in the left carotid artery (second from the left) is 10mm, the length is 30mm, and the width of the crimping ring is 3 mm.
EXAMPLE six
An aorta branch dedicated stent is 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, and the outer diameter, length and spacing of the branch arteries are selected according to actual conditions, wherein: the external diameter of the special aortic branch stent placed in the left carotid artery (first from the left) is 10mm, the length is 30mm, the width of the crimping ring is 3mm, the external diameter of the special aortic branch stent placed in the innominate artery (second from the left) is 10mm, the length is 30mm, and the width of the crimping ring is 3 mm.
EXAMPLE seven
Referring to fig. 7, the special aortic branch stent is arranged at the arch part of the aortic stent 1, the arch part of the aortic stent 1 is provided with a window at the position corresponding to the left carotid artery, 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 1 is a bottom end, the bottom end of the special aortic branch stent 2 is turned outwards to form a turned edge 3, the turned edge 3 is attached to the inner side of the window of the aortic stent 1 to seal the gap between the special aortic stent 1 and the special aortic branch stent 2 at the window, the special aortic branch stent 2 is of a mesh woven structure, a lining dacron coating 4 is arranged, and no coating is arranged in the turned edge 3.
The crimping 3 is annular and attached to the inner side of a window of the aortic stent 1, the inner edge of the crimping 3 is integrally connected with a tubular main body of the aortic branch special stent 2, the middle part of the crimping 3 protrudes into the cavity of the aortic stent 1 to form an arc surface, the outer edge of the crimping 3 is a plane and attached to the inner wall of the aortic stent 1, 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 dedicated stent is applied to aortic branch artery reconstruction of a normal adult patient, and one branch artery needs to be reconstructed, namely, the left subclavian artery, and the outer diameter, length and spacing of the branch artery are selected according to actual conditions, 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 crimping ring is 3 mm.
Example eight
An aorta branch dedicated stent is similar to the structure of the seventh embodiment, as shown in fig. 8, a branch artery needs to be reconstructed, namely, the left carotid aorta, and the external diameter, length and spacing of the branch artery are selected according to actual conditions, wherein: the external diameter of the special aortic branch stent placed in the left carotid artery is 10mm, the length is 30mm, and the width of the crimping ring is 4 mm.
Example nine
An aortic branch dedicated stent, which is similar to the structure of the seventh embodiment, but the unknown artery at the aortic arch of the applied patient has a longer lesion and needs to be reconstructed, as shown in fig. 9, the external diameter, length and spacing of the branch artery are selected according to the actual conditions, wherein: the external diameter of the aorta branch special stent placed in the innominate artery is 12mm, the length is 60mm, and the width of the crimping ring is 4 mm.
When the special aortic branch stent based on the embodiments is applied to an aortic stent implantation operation, the placement is completed through the following steps:
(1) finishing the arrangement of the aortic stent;
(2) according to the trend of blood vessels, a guide wire and a catheter are placed at a branch artery to be reconstructed of an aortic arch, pass through a window of an aortic stent and enter the aortic stent;
(3) feeding the special aortic branch stent along the guide wire, wherein the bottom end of the special aortic branch stent penetrates through a window of a branch artery corresponding to the aortic branch stent and enters into the aortic stent cavity, and then releasing the curled edge of the special aortic branch stent to enable the special aortic branch stent to be naturally opened, wherein the curled edge is stably connected with the window of the aortic stent;
(4) completely releasing the special aortic branch stent and withdrawing the guide wire;
(5) repeating the above steps to place other aortic branch stents according to the requirement.
Based on the special aortic branch stent, in the combined structure of the special aortic branch stent and the aortic stent, the special aortic branch stent is matched with the aortic stent for use, any one or any two or three of the special aortic branch stents are matched with the aortic stent for use, and the special aortic branch stents are respectively used for reconstructing any one or any two or three of three branch arteries at the aortic arch.
With the common pipe of aorta support and aorta branch special stand among the prior art send to put into the difference the utility model discloses in, the aorta branch special stand lay to put into and adopt mutually independent blood vessel to accomplish in proper order through the intervention means respectively, very big improvement aorta branch special stand put into the success rate, the effectual operation success rate that branch artery vessel rebuilds that has improved.
Therefore, the special aortic branch support combined with the structure and the placement process has the advantages of novel structure, ingenious conception, strong adaptability, high operation success rate, 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.
Claims (8)
1. Aorta branch special stand sets up on the aorta support, its characterized in that: the special aortic stent is characterized in that a window is formed in the aortic stent, the position of the window corresponds to at least one of the three branch arteries, the special aortic stent is embedded in the window, the special aortic stent is tubular, one end of the special aortic stent, which is located in the aortic stent, is a bottom end, the bottom end is turned outwards to form a turned edge, the turned edge is attached to the inner side of the window of the aortic stent, and a gap between the special aortic stent and the special aortic stent at the window is blocked.
2. The aortic branch dedicated stent as claimed in claim 1, wherein: the special aortic branch stent is of a net weaving structure, is lined with a terylene coating, and has no coating in a curled edge.
3. The aortic branch dedicated stent as claimed 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 outer diameter of the curled edge of the special aortic branch stent is 4-8mm larger than the outer diameter of the special aortic branch stent.
4. The aortic branch dedicated stent as claimed in claim 3, wherein: the length of the special aortic branch stent is 30-40mm, and the outer diameter of the curled edge of the special aortic branch stent is 6-8mm larger than the outer diameter of the special aortic branch stent.
5. The aortic branch dedicated stent of claim 4, wherein: the outer diameter of the special aortic branch stent is 8mm or 10mm or 12mm or 14mm, and the length of the special aortic branch stent is 30mm or 40 mm.
6. The aortic branch dedicated stent as claimed in claim 1, wherein: the bead is made of a memory alloy.
7. The aortic branch dedicated stent as claimed in claim 1, wherein: the aorta bracket is a tectorial bracket.
8. The utility model provides a combined structure of special support of aortic branch and aortic support which characterized in that: the special aortic branch stent is matched with the aortic stent for use, and the special aortic branch stent matched with the aortic stent for use has any one or any two or three.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111150523A (en) * | 2020-03-17 | 2020-05-15 | 范卫东 | Special support for aortic branch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111150523A (en) * | 2020-03-17 | 2020-05-15 | 范卫东 | Special support for aortic branch |
| CN111150523B (en) * | 2020-03-17 | 2024-02-23 | 范卫东 | Special support for aortic branch |
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