CN219021789U

CN219021789U - Integrated support for repairing aortic valve and ascending aorta in cavity

Info

Publication number: CN219021789U
Application number: CN202222551549.2U
Authority: CN
Inventors: 郭伟; 容丹; 张宏鹏; 葛阳阳
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-16
Anticipated expiration: 2032-09-26

Abstract

The utility model provides an integrated stent for endoluminal repair of aortic valves and ascending aorta, comprising: the device comprises a first frame body, a second frame body and a third frame body, wherein two ends of the second frame body are in one-to-one correspondence with the first frame body and the third frame body, and a radial protruding structure which is used for being clamped with an aorta Dou Naqiang and has a radial stretching function is arranged on the second frame body. Through the aortic stent with protruding structure, through protruding structure and aortic Dou Naqiang joint for the aortic stent is installed in the aorta steadily, need not to set up barb and a plurality of branch, prevents that the aortic stent from taking place axial displacement, keeps the isolated function of aortic stent to aortic dissection, and shutoff intermediate layer internal membranous split seals up real chamber and false chamber, avoids the blood flow to get into false chamber and arouses false chamber expansion fracture, prevents that coronary artery blood supply port dislocation.

Description

Integrated support for repairing aortic valve and ascending aorta in cavity

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an integrated bracket for repairing an aortic valve and an ascending aorta in a cavity.

Background

Aortic dissection refers to that high-speed and high-pressure blood flow in the aorta enters the outer layer of the middle membrane or the junction of the middle membrane and the outer membrane through an intima tearing port on the wall of the aorta, so that two cavities of the aorta are formed, and the aorta is expanded along the axial direction of the aorta, so that the aorta is broken or branch artery ischemia (myocardial infarction, cerebral infarction, visceral ischemia or lower limb ischemia) and the like are one of the most serious diseases of the aorta. Previous studies have counted dissection of different parts of the aorta according to the location of the proximal dissection of the aorta, with the proximal dissection being 65% of all dissection of the aorta, 5% of the aortic arch and about 30% of the descending aorta. Aortic aneurysm refers to pathological expansion of the aorta, exceeding 50% of normal vessel diameter, and can occur in the aortic sinus, ascending aorta, aortic arch, descending thoracic aorta, abdominal aorta, etc., and sudden death can occur due to a neoplastic rupture. Aortic aneurysms located in the ascending aorta often involve the aortic sinuses, deforming the aortic annulus and separating the leaflets to cause insufficiency of the aortic valve, long term effects leading to heart failure.

For aortic dissection and aortic aneurysm with proximal breach and aneurysm body at 1/3 of descending aorta, aortic arch and ascending aortic middle section, the proximal breach is isolated by implanting stent graft covered with artificial vascular membrane, the artificial lumen and aneurysm body are reduced by thrombosis, and the dissection true lumen is expanded, so as to achieve the cure purpose. Compared with the traditional open operation, the treatment method does not need chest opening, blood transfusion and extracorporeal circulation, is simple and minimally invasive, and has definite curative effect.

Along with the development of science and technology, aortic stents are more in variety, aortic stents in the prior art are usually clamped on the inner wall of a blood vessel through barbs, or are clamped at the positions of an innominate trunk artery, an aortic arch and the like through a plurality of branches, so that axial displacement of the aortic stents is easy to occur, the isolation function of aortic dissection is lost, and the dislocation of coronary blood supply ports is caused.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an integrated bracket for repairing an aortic valve and an ascending aorta in a cavity aiming at the defects of the prior art.

The technical scheme for solving the technical problems is as follows: an integrated stent for endoluminal repair of aortic valves and ascending aorta, comprising: the device comprises a first frame body arranged at the aortic valve ring position, a second frame body arranged at the aortic sinus position and a third frame body arranged at the ascending aortic position, wherein two ends of the second frame body are in one-to-one correspondence with the first frame body and the third frame body, and a radial protruding structure which is used for being clamped with an aorta Dou Naqiang and has a radial stretching function is arranged on the second frame body.

The technical scheme of the utility model has the beneficial effects that: through the design is used for the integral type support of cavity restoration aortic valve and ascending aorta with protruding structure, through protruding structure and aortic Dou Naqiang joint for the integral type support of cavity restoration aortic valve and ascending aorta is installed in the aorta steadily, need not to set up barb and a plurality of branch, prevents that the integral type support that is used for cavity restoration aortic valve and ascending aorta from taking place axial displacement, keeps the isolation function to the aortic dissection that is used for cavity restoration aortic valve and ascending aorta integral type support, shutoff intermediate layer internal membranous split, isolated true chamber and false chamber, avoid the blood stream to get into false chamber and arouse false chamber expansion fracture, prevent coronary artery blood supply port dislocation.

Further, the first frame body and the side wall of the third frame body are provided with films, and three-leaf petals are arranged in the first frame body.

The beneficial effects of adopting the further technical scheme are as follows: the aortic dissection is convenient to isolate through the membrane on the side wall of the frame body.

Further, the manufacturing materials of the films on the side walls of the first frame body and the third frame body are PET films, the manufacturing materials of the three-leaf petals are bovine pericardium, porcine pericardium or donkey pericardium, and the manufacturing materials of the second frame body are nickel-titanium alloy.

The beneficial effects of adopting the further technical scheme are as follows: the first frame body is used for supporting an integrated bracket for repairing an aortic valve and an ascending aorta in a cavity in an auxiliary mode.

Further, the first frame body and the third frame body are both pipe bodies, and the second frame body is connected with the third frame body through a fold component with a bending function.

The beneficial effects of adopting the further technical scheme are as follows: the tube body is convenient for the integral stent installation for repairing the aortic valve and the ascending aorta in the cavity, and the fold component enhances the bending performance of the two-part structure.

Further, the first frame body, the second frame body and the third frame body are integrally formed, the first frame body and the second frame body are of a laser engraving structure, and the third frame body is of a metal wire weaving structure or a laser engraving structure.

The beneficial effects of adopting the further technical scheme are as follows: the integrated forming improves the load force of the integrated bracket for repairing the aortic valve and the ascending aorta in the cavity, and improves the stability and the reliability of the integrated bracket for repairing the aortic valve and the ascending aorta in the cavity. The metal wire braiding structure improves the bending adaptability of the integrated stent for repairing the aortic valve and the ascending aorta in the cavity in the aorta, reduces the weight of the integrated stent for repairing the aortic valve and the ascending aorta in the cavity, and reduces the cost.

Further, the second frame body is provided with an open area for supplying coronary blood flow.

The beneficial effects of adopting the further technical scheme are as follows: the open area provides blood to the coronary artery.

Further, the diameter numerical range of the third frame body is 20-48mm, the length numerical range of the third frame body is 20-150mm, and the diameter numerical range of the first frame body is 20-32 mm.

The beneficial effects of adopting the further technical scheme are as follows: the design of the size improves the stability and reliability of the integrated stent for endoluminal repair of aortic valves and ascending aorta.

Further, the second frame body is provided with an embedded branch for supplying coronary blood flow.

The beneficial effects of adopting the further technical scheme are as follows: the nickel-titanium alloy self-expands to a design state after the memory property is released, so that a convex structure is formed.

Further, the protruding structure is a drum-shaped protruding structure which is matched with the aorta Dou Naqiang, and one side of the third frame body is provided with a reinforcing framework.

The beneficial effects of adopting the further technical scheme are as follows: the drum-shaped bulge structure is convenient to be connected with the aorta Dou Ka, so that the fixed installation of the integrated bracket for repairing the aortic valve and the ascending aorta in the cavity is realized, and the connection of the framework is enhanced, so that the overall structural strength is enhanced.

Further, the first frame body and the second frame body are provided with a plurality of meshes in a surrounding mode, and the diameters of the meshes in the second frame body are larger than those of the meshes in the first frame body.

Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic structural view of an integrated stent for endoluminal repair of aortic valves and ascending aorta according to an embodiment of the present utility model.

Fig. 2 is a schematic view of an installation structure of an integrated stent for endoluminal repair of aortic valve and ascending aorta according to an embodiment of the utility model.

Fig. 3 is a schematic diagram of a second embodiment of an integrated stent for endoluminal repair of aortic valves and ascending aorta.

Reference numerals illustrate: 1. a first frame body; 2. a second frame body; 3. a third frame; 4. a bump structure; 5. a membrane; 6. a crimping member; 7. an open area; 8. reinforcing the skeleton; 9. a left coronary artery; 10. a right coronary artery; 12. an aortic interlayer intima breach; 13. aortic dissection false cavity; 14. the branches are embedded.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

As shown in fig. 1 and 2, an embodiment of the present utility model provides an integrated stent for endoluminal repair of aortic valve and ascending aorta, comprising: the device comprises a first frame body 1 arranged at the aortic annulus position, a second frame body 2 arranged at the aortic sinus position and a third frame body 3 arranged at the ascending aortic position, wherein two ends of the second frame body 2 are connected with the first frame body 1 and the third frame body 3 in one-to-one correspondence, and a radial bulge structure 4 which is used for being clamped with an aorta Dou Naqiang and has a radial stretching function is arranged on the second frame body 2.

As shown in fig. 1 and 2, further, the side walls of the first frame 1 and the third frame 3 are respectively provided with a membrane 5, and three-leaf petals are arranged in the first frame 1.

Wherein, the side wall of the frame body is coated with a film. The films are correspondingly coated on the first frame body and the third frame body respectively.

As shown in fig. 1 and 2, further, the film on the side walls of the first frame and the third frame is made of a PET film, the three-leaf type valve is made of bovine pericardium, porcine pericardium or donkey pericardium, and the second frame 2 is made of a nickel-titanium alloy.

As shown in fig. 1 and 2, further, the first frame 1 and the third frame 3 are both pipes, and the second frame 2 is connected to the third frame 3 through a fold member 6 having a bending function.

Wherein the pleat members 6 are integrally formed with the third frame 3.

As shown in fig. 1 and 2, further, the first frame 1, the second frame 2 and the third frame 3 are integrally formed, the first frame 1 and the second frame 2 are of a laser engraving structure, and the third frame 3 is of a metal wire weaving structure or a laser engraving structure.

The first frame body, the second frame body and the third frame body can be manufactured by adopting a laser engraving technology.

As shown in fig. 1 and 2, the second frame 2 is further provided with an open area 7 for supplying coronary blood flow.

The coronary arteries can be a left coronary artery 9 and a right coronary artery 10.

As shown in fig. 1 and 2, further, the diameter of the third frame ranges from 20mm to 48mm, the length of the third frame ranges from 20mm to 150mm, and the diameter of the first frame ranges from 20mm to 32mm.

Wherein, each size can be different according to the different human body, can carry out the size design and make to the integral type support that is used for the prosthetic aortic valve of intracavity and ascending aorta according to actual need when producing.

As shown in fig. 3, further, the second frame 2 is provided with an embedded branch 14 for supplying coronary blood flow.

The embedded branch 14 is a pipeline, and the manufacturing mode and structure of the pipeline are the same as those of the frame body. The number of the embedded branches 14 can be a pair, one end of the embedded branches 14 is located on the second frame body 2, and the other end of the embedded branches is located in the inner cavity of the third frame body 3.

In the case where the second frame body 2 is provided with the embedded branch 14 for supplying coronary blood flow, the second frame body 12 is in a full-film state, and the side wall of the embedded branch 14 is also full-film-coated.

As shown in fig. 1 and 2, further, the protruding structure 4 is a drum-shaped protruding structure adapted to the aorta Dou Naqiang, and one side of the third frame 3 has a reinforcing skeleton 8.

Wherein, the both ends of strengthening the skeleton correspond respectively and are connected with adjacent wire, strengthen skeleton and third ladder integrated into one piece, engrave out the strengthening skeleton according to design scheme when laser sculpture.

The integrated stent for repairing the aortic valve and ascending aorta in the cavity can be punctured through groin, and femoral artery access is realized; or, penetrating the puncture path through the apex of the heart. The inguinal puncture wound is smaller, but the access is longer, the inguinal puncture wound needs to pass through the abdominal aorta, the thoracic aorta and the aortic arch to reach the aortic valve, and the requirement on the operation of the conveyor is higher. Can puncture through the apex of the heart, the wound is bigger, but the access is shorter, straighter and easier to operate.

The proximal end of the integrated stent for endoluminal repair of the aortic valve and ascending aorta is located at the aortic valve annulus; the distal end is located in the ascending aorta; the middle bulge is located in the aortic sinus and serves to prevent distal displacement of the integrated stent for endoluminal repair of the aortic valve and ascending aorta. The proximal end refers to the end near the heart, i.e. the bottom of the integrated stent for transluminal aortic valve repair and ascending aorta. The distal end refers to the end farther from the heart, i.e., the top of the integrated stent shown in the figures for endoluminal repair of the aortic valve and ascending aorta.

The bulge structure is positioned in the aortic sinus, the integrated bracket for repairing the aortic valve and the ascending aorta in the cavity is designed as a whole, a proximal valve area (a first bracket body) and a distal bracket area (a third bracket body) of the laser engraved skeleton are covered by a film, and a middle bare area (a second bracket body) provides blood flow for coronary arteries. The laser engraved planar spring enhances the bending performance of the two-part structure. The integrated stent for repairing aortic valve and ascending aorta in cavity is compressed into the conveyer in ring shape, and the nickel-titanium alloy has memory property, and after the memory property of the nickel-titanium alloy is released, the stent is self-expanded to a design state, so that a convex structure is formed. The distal end (third scaffold) may be constructed as a stent graft using non-engraved wires in combination with an ePTFE membrane (expanded polytetrafluoroethylene) or dacron membrane. An integral stent for endoluminal repair of the aortic valve and ascending aorta is compressively loaded into the delivery device.

The first frame body may be an artificial aortic valve covered part, the artificial aortic valve is anchored on an aortic valve ring (i.e. the artificial aortic valve may be arranged in the first frame body), the membrane may be a bovine pericardium material aortic valve, and an artificial aortic valve distal protrusion (protrusion structure) is arranged in an aortic sinus. The integrated stent for repairing the aortic valve and the ascending aorta in the cavity can be an ascending aortic stent, the anchoring area at the proximal end of the ascending aortic stent is positioned at the sinus canal juncture, the large bending side has no reinforcing framework, and the small bending side reinforcing framework is connected to strengthen the overall structural strength. The side wall of the third frame body is arranged corresponding to the positions of the aortic interlayer intima rupture 12 and the aortic interlayer false cavity 13, and the distal anchoring area of the ascending aortic stent is positioned at the proximal end of the innominate artery.

Ascending aortic stent (third stent) diameter: 32-48mm, one specification per 2 mm; ascending aortic stent (third frame) length: 50-100mm, one specification per 10 mm; taper design (diameter difference between proximal end and distal end of ascending aorta stent, with large proximal end and large distal end, diameter difference of 4-12mm, one specification per 2 mm); 4-12mm taper, and taper design is arranged from the proximal end to the distal end and from the distal end to the proximal end. The maximum diameter of the bump structure is 5mm wider than the proximal end of the ascending aortic stent. The prosthetic valve proximal anchoring zone (first frame body) diameter may be: 20mm;23mm;26mm;29mm.

The tectorial membrane stent (third frame body) seals the gap of the interlayer inner membrane, isolates the true cavity and the false cavity, and avoids the false cavity expansion and rupture caused by blood flow entering the false cavity. The design of the frame body carving spring increases the bending performance of the whole structure. The protruding structure is the corolla protruding, blocks in the aortic sinus, increases the holistic steadiness of apparatus, avoids shifting. The prosthetic aortic valve (first frame) is anchored to the aortic annulus, providing anchoring for the overall instrument, avoiding displacement.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. An integrated stent for endoluminal repair of aortic valves and ascending aorta comprising: the device comprises a first frame body arranged at the aortic valve ring position, a second frame body arranged at the aortic sinus position and a third frame body arranged at the ascending aortic position, wherein two ends of the second frame body are in one-to-one correspondence with the first frame body and the third frame body, and a radial protruding structure which is used for being clamped with an aorta Dou Naqiang and has a radial stretching function is arranged on the second frame body.

2. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 1, wherein the first stent body and the third stent body are provided with membranes on the side walls, and the first stent body is provided with a tri-leaflet valve therein.

3. The integrated stent for endoluminal repair of aortic valve and ascending aorta according to claim 2, wherein the material for the first stent body and the film on the side wall of the third stent body is PET film, the material for the three-leaflet valve is bovine pericardium, porcine pericardium or donkey pericardium, and the material for the second stent body is nickel-titanium alloy.

4. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 1, wherein the first stent body and the third stent body are both tubular bodies, and the second stent body is connected with the third stent body by a pleated member having a bending function.

5. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 1, wherein the first frame body, the second frame body and the third frame body are integrally formed, the first frame body and the second frame body are laser engraved structures, and the third frame body is a wire woven structure or a laser engraved structure.

6. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 1, wherein the second stent body is provided with an open area for supplying coronary blood flow.

7. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 6, wherein the third stent has a diameter ranging from 20 to 48mm, the third stent has a length ranging from 20 to 150mm, and the first stent has a diameter ranging from 20 to 32mm.

8. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 1, wherein the second stent body is provided with an embedded branch for supplying coronary blood flow.

9. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 1, wherein the bump structure is a drum-shaped bump structure adapted to the aorta Dou Naqiang, and one side of the third stent body has a reinforcing skeleton.

10. The integrated stent for endoluminal repair of aortic valves and ascending aorta according to claim 1, wherein the first stent body and the second stent body are each provided with a plurality of meshes in a surrounding manner, and the mesh diameter of the second stent body is larger than the mesh diameter of the first stent body.