An island-shaped artificial blood vessel

Abstract

The application relates to the technical field of artificial blood vessels and discloses an island-shaped artificial blood vessel, which comprises an aortic blood vessel body, the aortic blood vessel body is in an arc shape, the aortic blood vessel body comprises a proximal end and a distal end, the proximal end is connected with a human ascending aorta, and the distal end is connected with a human descending aorta; the aortic blood vessel body is in an integral forming structure, the aortic blood vessel body is provided with an island-shaped blood vessel, a first branch blood vessel and a second branch blood vessel, the island-shaped blood vessel is suitable for collective reconstruction of at least two branch blood vessels of an aortic arch, and the first branch blood vessel is suitable for separate reconstruction of another aortic arch branch blood vessel which is not anastomosed with the island-shaped blood vessel; the island-shaped artificial blood vessel provided by the application solves the problems that the existing four-branch artificial blood vessel has a long operation time and a high risk of complications when branch blood vessels of an arch are respectively reconstructed.

Description

Technical Field

[0001] This invention relates to the field of artificial blood vessel technology, and specifically to an island-shaped artificial blood vessel. Background Technology

[0002] Acute aortic syndrome is a very dangerous cardiovascular disease with a high mortality and disability rate. In cases involving the ascending aorta and aortic arch, surgical intervention is required, and the most effective treatment is artificial blood vessel replacement surgery. Because the aortic arch has branches leading to the upper limbs and head, these branches also need to be reconstructed during surgery. Currently, the mainstream approach is to use a four-branched prosthetic blood vessel to reconstruct the branches of the aortic arch separately. This method is time-consuming and carries corresponding risks of complications. Furthermore, for suitable cases, partial aortic arch reconstruction is necessary. However, due to limitations in the type of prosthetic blood vessel material, surgeons must trim and re-suture the existing vessel during surgery to adapt to the patient's vascular morphology. The irregular edges of the trimmed prosthetic blood vessel and the potential for leakage at the re-sutured sites significantly increase the difficulty of the surgery, affect the surgical outcome, and ultimately threaten the patient's life. Summary of the Invention

[0003] The purpose of this invention is to provide an island-shaped artificial blood vessel to solve at least one of the aforementioned problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An island-shaped artificial blood vessel includes an aortic vessel body, the aortic vessel body being arc-shaped, the aortic vessel body including a proximal end and a distal end, the proximal end being connected to the human ascending aorta, and the distal end being connected to the human descending aorta; The main body of the aortic vessel is a one-piece molded structure. The main body of the aortic vessel is provided with an island vessel, a first branch vessel and a second branch vessel. The island vessel is suitable for the combined reconstruction of at least two branch vessels in the aortic arch. The first branch vessel is suitable for the individual reconstruction or ligation of another branch vessel in the aortic arch that is not anastomosed with the island vessel. The second branch vessel is suitable for blood perfusion in extracorporeal circulation or for individual ligation.

[0005] In this technical solution, because the main body of the aortic vessel is a one-piece molded structure, blood leakage can be greatly reduced, increasing the stability and safety of the vessel. Since the main body of the aortic vessel has a first branch vessel and a second branch vessel, these two vessels facilitate separate reconstruction of the aortic arch branches and facilitate extracorporeal circulation perfusion. When separate perfusion is not required, the second branch vessel can be ligated. Furthermore, when partial aortic arch reconstruction is needed for suitable cases, the island vessel can achieve reconstruction of some aortic branches. Through the design of the first branch vessel, it can be directly ligated individually, thus eliminating the need for cutting the artificial blood vessel. The island vessel design allows for the overall anastomosis of at least two branch vessels in the aortic arch. Specifically, the island vessel can be anastomosed with the brachiocephalic artery and the left common carotid artery, or with the left common carotid artery and the left subclavian artery, or simultaneously with all three branch vessels of the brachiocephalic artery, the left common carotid artery, and the left subclavian artery. Therefore, compared to the existing design of reconstructing the branch vessels of the aortic arch separately using four-branch artificial vessels, the above-mentioned design of reconstructing at least two branch vessels of the aortic arch using an island vessel significantly reduces surgical time and the risk of anastomotic bleeding.

[0006] This technical solution, for patients undergoing total arch replacement for acute type A aortic dissection, reduces the number of anastomoses due to the island-like vascular structure. This simplifies the procedure, shortens the operation time and deep hypothermic circulatory arrest time, improves intraoperative cerebral perfusion, reduces anastomotic bleeding, and lowers the incidence of postoperative neurological and cardiovascular complications, thus ensuring the safety of patient diagnosis and treatment.

[0007] In summary, the application of this technology has largely solved the problem of aortic arch branch vessel reconstruction, and helps to reduce surgical complications, improve surgical outcomes, and ensure patient safety.

[0008] Furthermore, in order to provide a variety of designs that can adapt to the size of the human aorta, the diameter D1 of the main body of the aorta is 26mm, 28mm, or 30mm, the cross-section of the island vessel is circular, and the diameter D2 of the island vessel is 16mm, 18mm, or 20mm. When the diameter D1 of the main body of the aorta is 26mm, the diameter D2 of the island vessel is 16mm; when the diameter D1 of the main body of the aorta is 28mm, the diameter D2 of the island vessel is 18mm; and when the diameter D1 of the main body of the aorta is 30mm, the diameter D2 of the island vessel is 20mm.

[0009] Furthermore, in order to ensure the anastomosis height between the island vessel and the branch vessels of the aortic arch, the height H of the island vessel is 8 cm.

[0010] Furthermore, in order to enable the island vessels to anastomose with the branch vessels of the aortic arch in various forms, the island vessels are anastomosed with the brachiocephalic artery and the left common carotid artery as a whole, or the island vessels are anastomosed with the left common carotid artery and the left subclavian artery as a whole, or the island vessels are simultaneously anastomosed with the three branch vessels of the brachiocephalic artery, the left common carotid artery and the left subclavian artery as a whole.

[0011] Furthermore, to allow for adaptive selection of overall or individual anastomosis according to surgical needs, when the island vessel is anastomosed to the brachiocephalic artery and the left common carotid artery as a whole, the first branch vessel is anastomosed to or ligated separately from the left subclavian artery; when the island vessel is anastomosed to the left common carotid artery and the left subclavian artery as a whole, the first branch vessel is anastomosed to or ligated separately from the brachiocephalic artery; when the island vessel is simultaneously anastomosed to the brachiocephalic artery, the left common carotid artery, and the left subclavian artery as a whole, the first branch vessel is ligated.

[0012] Furthermore, in order to better achieve the corresponding effect with the branch vessels of the aortic arch, the first branch vessel is located between the proximal end and the island vessel, and the island vessel is located between the distal end and the first branch vessel. In order to achieve a better extracorporeal circulation blood perfusion effect, the second branch vessel is located on the anterior side wall of the main body of the aortic vessel.

[0013] Furthermore, in order to better achieve the corresponding effect with the branch vessels of the aortic arch and to achieve a better extracorporeal circulation blood perfusion effect, the first branch vessel and the island vessel are located on the outer arc-shaped extension wall of the aortic vessel body. The midline of the opening connecting the second branch vessel and the aortic vessel body is the first midline, and the midline of the opening connecting the island vessel and the aortic vessel body is the second midline. The first midline and the second midline are located in the same plane.

[0014] Furthermore, in order to adapt to the size of the branch vessels of the human aortic arch, the diameter D3 of the first branch vessel is 10 mm and the length L4 is 15 cm, and the diameter D4 of the second branch vessel is 10 mm and the length L5 is 15 cm.

[0015] Furthermore, the connection between the island-shaped vessel and the main body of the aorta is reinforced. This ensures the stability of the vessel and reduces the possibility of blood leakage. The reinforcement can be achieved by increasing the thickness of the connection between the island-shaped vessel and the main body of the aorta.

[0016] Furthermore, the main body of the aortic vessel is a spiral telescopic structure, which has a certain axial extensibility, giving the main body of the aortic vessel a certain degree of elasticity to adapt to the patient's dynamically fluctuating blood pressure.

[0017] The beneficial effects of this invention are as follows: In this technical solution, since the main body of the aortic vessel is a one-piece molded structure, blood leakage can be greatly reduced, increasing the stability and safety of the vessel; since the main body of the aortic vessel is provided with a first branch vessel and a second branch vessel, the first branch vessel and the second branch vessel facilitate the separate reconstruction of the aortic arch branch vessels and facilitate extracorporeal circulation blood perfusion. When separate perfusion is not required, the second branch vessel can be ligated. In addition, when partial arch reconstruction is required for suitable cases, the island vessel can realize the reconstruction of part of the aortic branch vessels. Through the setting of the first branch vessel, it can be directly ligated separately, so there is no need for artificial... The blood vessels are trimmed to ensure the surgical outcome. The island vessel configuration allows for the overall anastomosis of at least two branch vessels in the aortic arch. That is, the island vessel can be anastomosed with the brachiocephalic artery and the left common carotid artery, or with the left common carotid artery and the left subclavian artery, or with the brachiocephalic artery and the left subclavian artery, or simultaneously with three branch vessels: the brachiocephalic artery, the left common carotid artery, and the left subclavian artery. Therefore, compared to the existing four-branch artificial blood vessel design that reconstructs the branch vessels in the aortic arch separately, the above-mentioned design of reconstructing at least two branch vessels in the aortic arch with the island vessel can significantly reduce surgical time and the risk of anastomotic bleeding.

[0018] This technical solution, for patients undergoing total arch replacement for acute type A aortic dissection, reduces the number of anastomoses due to the island-like vascular structure. This simplifies the procedure, shortens the operation time and deep hypothermic circulatory arrest time, improves intraoperative cerebral perfusion, reduces anastomotic bleeding, and lowers the incidence of postoperative neurological and cardiovascular complications, thus ensuring the safety of patient diagnosis and treatment.

[0019] In summary, the application of this technology has largely solved the problem of aortic arch branch vessel reconstruction, and helps to reduce surgical complications, improve surgical outcomes, and ensure patient safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] In the diagram: 1. Main body of the aorta; 2. Proximal end; 3. Distal end; 4. Island vessel; 5. First branch vessel; 6. Second branch vessel. Detailed Implementation

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0023] Example 1: like Figure 1 As shown, this embodiment provides an island-shaped artificial blood vessel, including an aortic blood vessel body 1. The aortic blood vessel body 1 is arc-shaped and includes a proximal end 2 and a distal end 3. The proximal end 2 is connected to the human ascending aorta, and the distal end 3 is connected to the human descending aorta. The main body of the aortic vessel 1 is a one-piece molded structure. The main body of the aortic vessel 1 is provided with an island vessel 4, a first branch vessel 5, and a second branch vessel 6. The island vessel 4 is suitable for the combined reconstruction of at least two branch vessels in the aortic arch. The first branch vessel 5 is suitable for the individual reconstruction or ligation of another branch vessel in the aortic arch that is not anastomosed with the island vessel 4. That is, when partial aortic arch reconstruction is required for a suitable case, there is no need to cut the artificial blood vessel. With the setting of the first branch vessel 5, it can be directly ligated. The island vessel 4 can realize the reconstruction of part of the aortic branch vessels. The second branch vessel 6 is suitable for blood perfusion in extracorporeal circulation or individual ligation. When individual perfusion is not required, the second branch vessel 6 can be ligated.

[0024] In this technical solution, since the main body 1 of the aortic vessel is a one-piece molded structure, blood leakage can be greatly reduced, increasing the stability and safety of the vessel. Because the main body 1 of the aortic vessel has a first branch vessel 5 and a second branch vessel 6, the first branch vessel 5 and the second branch vessel 6 facilitate the separate reconstruction of the aortic arch branch vessels and facilitate extracorporeal circulation blood perfusion. Furthermore, when partial arch reconstruction is required for suitable cases, the island vessel can achieve the reconstruction of some aortic branch vessels. Through the setting of the first branch vessel, it can be directly ligated individually, thus eliminating the need to cut the artificial blood vessel and ensuring the surgical effect. The island vessel 4 allows for the overall anastomosis of at least two branch vessels in the aortic arch. Specifically, island vessel 4 can be anastomosed with the brachiocephalic artery and the left common carotid artery, or with the left common carotid artery and the left subclavian artery, or with the brachiocephalic artery and the left subclavian artery. Alternatively, island vessel 4 can be anastomosed with all three branch vessels of the brachiocephalic artery, the left common carotid artery, and the left subclavian artery simultaneously. Therefore, compared to the existing design of reconstructing the branch vessels of the aortic arch separately using four-branch artificial blood vessels, the above-mentioned design of island vessel 4 and at least two branch vessels of the aortic arch can significantly reduce surgical time and the risk of anastomotic bleeding.

[0025] This technical solution, for patients undergoing total arch replacement for acute type A aortic dissection, reduces the number of anastomoses due to the island vessel structure, thus simplifying the operation, shortening the operation time and deep hypothermic circulatory arrest time, improving intraoperative cerebral perfusion, reducing anastomotic bleeding, and decreasing the incidence of postoperative neurological and cardiovascular complications, thereby ensuring the safety of patient diagnosis and treatment.

[0026] In summary, the application of this technology has largely solved the problem of aortic arch branch vessel reconstruction, and helps to reduce surgical complications, improve surgical outcomes, and ensure patient safety.

[0027] Example 2: This embodiment is an optimization based on the above embodiment 1.

[0028] To provide a variety of designs that can adapt to the size of the human aorta, the diameter D1 of the aortic vessel body 1 is 26mm, 28mm, or 30mm, the cross-section of the island vessel 4 is circular, and the diameter D2 of the island vessel 4 is 16mm, 18mm, or 20mm. When the diameter D1 of the aortic vessel body 1 is 26mm, the diameter D2 of the island vessel 4 is 16mm; when the diameter D1 of the aortic vessel body 1 is 28mm, the diameter D2 of the island vessel 4 is 18mm; and when the diameter D1 of the aortic vessel body 1 is 30mm, the diameter D2 of the island vessel 4 is 20mm.

[0029] Example 3: This embodiment is an optimization based on the above embodiment 1.

[0030] To ensure the anastomosis height between island vessel 4 and the branch vessels of the aortic arch, the height H of island vessel 4 is 8 cm.

[0031] Example 4: This embodiment is an optimization based on the above embodiment 1.

[0032] In order to enable the island vessel 4 to anastomose with the branch vessels of the aortic arch in various ways, the island vessel 4 is anastomosed with the brachiocephalic artery and the left common carotid artery as a whole, or the island vessel 4 is anastomosed with the left common carotid artery and the left subclavian artery as a whole, or the island vessel 4 is anastomosed with the three branch vessels of the brachiocephalic artery, the left common carotid artery and the left subclavian artery as a whole.

[0033] Example 5: This embodiment is an optimization based on the above embodiment 4.

[0034] To allow for adaptive selection of overall or individual anastomosis based on surgical needs, when island vessel 4 is anastomosed to the brachiocephalic artery and the left common carotid artery, the first branch vessel 5 is anastomosed to or ligated separately from the left subclavian artery; when island vessel 4 is anastomosed to the left common carotid artery and the left subclavian artery, the first branch vessel 5 is anastomosed to or ligated separately from the brachiocephalic artery; when island vessel 4 is simultaneously anastomosed to the brachiocephalic artery, the left common carotid artery, and the left subclavian artery, the first branch vessel 5 is ligated.

[0035] Example 6: This embodiment is an optimization based on the above embodiment 1.

[0036] To better achieve the corresponding effect with the branch vessels of the aortic arch, the first branch vessel 5 is located between the proximal end 2 and the island vessel 4, and the island vessel 4 is located between the distal end 3 and the first branch vessel 5. To achieve a better extracorporeal circulation blood perfusion effect, the second branch vessel 6 is located on the anterior side wall of the main body of the aortic vessel 1.

[0037] Example 7: This embodiment is an optimization based on the above embodiment 6.

[0038] To better achieve the corresponding effect with the branch vessels of the aortic arch, and to achieve better extracorporeal blood perfusion effect, the first branch vessel 5 and the island vessel 4 are located on the outer arc-shaped extension wall of the aortic vessel body 1. The midline of the opening connecting the second branch vessel 6 and the aortic vessel body 1 is the first midline, and the midline of the opening connecting the island vessel 4 and the aortic vessel body 1 is the second midline. The first midline and the second midline are located in the same plane.

[0039] Example 8: This embodiment is an optimization based on the above embodiment 1.

[0040] To accommodate the dimensions of the branches of the aortic arch in the human body, the diameter D3 of the first branch vessel 5 is 10 mm and the length L4 is 15 cm, while the diameter D4 of the second branch vessel 6 is 10 mm and the length L5 is 15 cm.

[0041] Preferably, the length L of the main body 1 of the aorta is 35cm-45cm, preferably 40cm. The distance L1 between the proximal end 2 and the first branch vessel 5 is 22cm-28cm, preferably 25cm, sufficient to simulate the length of the human ascending aorta. The distance L2 between the distal end 3 and the island vessel 4 is 7cm-13cm, preferably 10cm, leaving sufficient space for suturing. Preferably, the distance L3 between the first branch vessel 5 and the island vessel 4 is 3cm.

[0042] Example 9: This embodiment is an optimization based on the above embodiment 1.

[0043] The connection between the island vessel 4 and the main body of the aortic vessel 1 is reinforced to ensure the stability of the vessel and reduce the possibility of blood leakage. The reinforcement can be achieved by increasing the thickness of the connection between the island vessel 4 and the main body of the aortic vessel 1.

[0044] Example 10: This embodiment is an optimization based on the above embodiment 1.

[0045] The main body of the aortic vessel 1 is a spiral telescopic structure. The spiral telescopic structure has a certain axial extensibility, which makes the main body of the aortic vessel 1 have a certain elasticity to adapt to the dynamic fluctuations of the patient's blood pressure.

[0046] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An island-shaped artificial blood vessel, characterized in that: It includes the main body of the aorta, which is arc-shaped and includes a proximal end and a distal end. The proximal end is connected to the ascending aorta, and the distal end is connected to the descending aorta. The main body of the aortic vessel is a one-piece molded structure. The main body of the aortic vessel is provided with an island vessel, a first branch vessel and a second branch vessel. The island vessel is suitable for the combined reconstruction of at least two branch vessels in the aortic arch. The first branch vessel is suitable for the individual reconstruction of another branch vessel in the aortic arch that is not anastomosed with the island vessel. The second branch vessel is suitable for blood perfusion in extracorporeal circulation or individual ligation. The connection between the island-shaped blood vessel and the main body of the aortic blood vessel is reinforced. The main body of the aorta is a spiral telescopic structure.

2. The island-shaped artificial blood vessel according to claim 1, characterized in that: The diameter D1 of the main body of the aortic vessel is 26mm, 28mm, or 30mm. The cross-section of the island vessel is circular. The diameter D2 of the island vessel is 16mm, 18mm, or 20mm. When the diameter D1 of the main body of the aortic vessel is 26mm, the diameter D2 of the island vessel is 16mm. When the diameter D1 of the main body of the aortic vessel is 28mm, the diameter D2 of the island vessel is 18mm. When the diameter D1 of the main body of the aortic vessel is 30mm, the diameter D2 of the island vessel is 20mm.

3. The island-shaped artificial blood vessel according to claim 1, characterized in that: The height H of the island-shaped blood vessel is 8 cm.

4. The island-shaped artificial blood vessel according to claim 1, characterized in that: The island vessel is anastomosed with the brachiocephalic artery and the left common carotid artery as a whole, or with the left common carotid artery and the left subclavian artery as a whole, or with the island vessel simultaneously anastomosed with the three branch vessels of the brachiocephalic artery, the left common carotid artery and the left subclavian artery as a whole.

5. The island-shaped artificial blood vessel according to claim 4, characterized in that: When the island vessel is anastomosed with the brachiocephalic artery and the left common carotid artery as a whole, the first branch vessel is anastomosed with or ligated separately to the left subclavian artery; when the island vessel is anastomosed with the brachiocephalic artery and the left subclavian artery as a whole, the first branch vessel is anastomosed with or ligated separately to the brachiocephalic artery; when the island vessel is anastomosed with the brachiocephalic artery, the left common carotid artery and the left subclavian artery as a whole, the first branch vessel is ligated.

6. The island-shaped artificial blood vessel according to claim 1, characterized in that: The first branch vessel is located between the proximal end and the island vessel, the island vessel is located between the distal end and the first branch vessel, and the second branch vessel is located on the anterior sidewall of the main body of the aorta.

7. The island-shaped artificial blood vessel according to claim 6, characterized in that: The first branch vessel and the island vessel are located on the outer arc-shaped extension wall of the main body of the aorta. The midline of the opening connecting the second branch vessel and the main body of the aorta is the first midline, and the midline of the opening connecting the island vessel and the main body of the aorta is the second midline. The first midline and the second midline are located in the same plane.

8. The island-shaped artificial blood vessel according to claim 1, characterized in that: The diameter D3 of the first branch vessel is 10 mm and the length L4 is 15 cm. The diameter D4 of the second branch vessel is 10 mm and the length L5 is 15 cm.

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