An artificial blood vessel for aortic surgery

Abstract

The present disclosure discloses an artificial blood vessel for aortic surgery, comprising: an artificial blood vessel trunk (1), an artificial blood vessel first-level branch (2) on one side of the trunk, and a first branch blood vessel (3) on the other side of the trunk; the diameter of the artificial blood vessel trunk is greater than the diameter of the artificial blood vessel first-level branch, and the diameter of the artificial blood vessel first-level branch is greater than the diameter of the first branch blood vessel; the bottom end of the artificial blood vessel first-level branch is connected to the artificial blood vessel trunk, and the top end of the artificial blood vessel first-level branch is respectively connected to the second branch blood vessel (4) and the third branch blood vessel (5). The new artificial blood vessel disclosed in the present disclosure can reduce the interruption time of blood circulation, is more friendly to surgery, and can reduce potential hazards and risks.

Description

Technical Field

[0001] The present invention belongs to the field of medical equipment, and in particular relates to an artificial blood vessel used for aortic surgery. Background Art

[0002] In the aortic surgery in the prior art, the doctor needs to use an artificial blood vessel to replace the diseased blood vessel and complete the anastomosis of the artificial blood vessel with the heart, three brachiocephalic vessels, descending aorta, etc., wherein, illustratively, the artificial blood vessel is, for example, a four-branched artificial blood vessel.

[0003] The problem is that before the existing four-branch artificial blood vessels replace the diseased blood vessels, the original ascending aorta and aortic arch are often cut off together, which requires interrupting the lower body circulation and myocardial circulation for a certain period of time. Even with the help of cryogenic technology, there is still a high probability that it will cause certain harm to the living organism.

[0004] Therefore, there is an urgent need in the art to develop an artificial blood vessel that can reduce the blood circulation interruption time, is more surgery-friendly and reduces potential hazards and risks. Summary of the invention

[0005] In order to solve one of the above technical problems, the present disclosure provides an artificial blood vessel for aortic surgery, comprising:

[0006] An artificial blood vessel trunk (1), an artificial blood vessel first-level branch (2) on one side of the trunk, and a first branch blood vessel (3) on the other side of the trunk;

[0007] The diameter of the artificial blood vessel trunk is larger than the diameter of the first-level branch of the artificial blood vessel, and the diameter of the first-level branch of the artificial blood vessel is larger than the diameter of the first branch blood vessel;

[0008] The bottom end of the first-level branch of the artificial blood vessel is connected to the main trunk of the artificial blood vessel, and the top end of the first-level branch of the artificial blood vessel is respectively connected to the second branch blood vessel (4) and the third branch blood vessel (5).

[0009] Preferred:

[0010] The angle α between the first-level branch (2) of the artificial blood vessel and the main trunk (1) of the artificial blood vessel is adjustable.

[0011] Preferred:

[0012] The angle β between the first branch blood vessel (3) and the artificial blood vessel trunk (1) is adjustable.

[0013] Preferred:

[0014] The angle γ between the second branch blood vessel (4) and the third branch blood vessel (5) is adjustable.

[0015] Preferred:

[0016] The first-level branch (2) of the artificial blood vessel and the first branch blood vessel (3) are located at approximately the same position of the main trunk of the artificial blood vessel.

[0017] Preferred:

[0018] The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge;

[0019] The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge;

[0020] The first upper edge is flush with the second upper edge.

[0021] Preferred:

[0022] The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge;

[0023] The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge;

[0024] The first lower edge is flush with the second lower edge.

[0025] Preferred:

[0026] The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge;

[0027] The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge;

[0028] The first upper edge is flush with the second upper edge.

[0029] Preferred:

[0030] On the first-level branch (2) of the artificial blood vessel, one or more first-level branch knotting sites are arranged near the main trunk of the artificial blood vessel;

[0031] One or more trunk knotting sites are also provided on the artificial blood vessel trunk (1) near the artificial blood vessel first-order branch (2).

[0032] Preferred:

[0033] One or more first branch knotting sites are arranged on the first branch blood vessel (3), near the main trunk of the artificial blood vessel;

[0034] One or more trunk knotting sites are also provided on the artificial blood vessel trunk (1) near the first branch blood vessel (3).

[0035] The novel artificial blood vessel disclosed in the present disclosure can reduce the interruption time of blood circulation, is more friendly to surgery and reduces potential harm and risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0037] Figures 1 to 13C is a schematic diagram of an artificial blood vessel in the prior art in surgical application;

[0038] FIG. 14A to FIG. 19 Schematic diagrams of novel artificial blood vessels disclosed in different embodiments of the present disclosure and schematic diagrams of their use in surgery. DETAILED DESCRIPTION

[0039] The following is combined with Figures 1 to 19 The present disclosure is further described in detail with reference to the embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant contents, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0042] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0043] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0044] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0045] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0046] In order to better illustrate the technical effect of the artificial blood vessel disclosed in the present invention, see Figures 1 to 3 , FIG. 4A to FIG. 4C , FIG. 5A to FIG. 5B , Figures 6 to 8 , 9A to 9C , FIG. 10A to FIG. 10B , FIG. 11A to FIG. 11B , FIG. 12A to FIG. 12B , FIG. 13A to FIG. 13C , first describe in detail the technical problems existing in the four-branch artificial blood vessel in the prior art.

[0047] Figure 1 In the middle, extracorporeal circulation was established via axillary artery cannulation; Figure 2 In the process, right atrial cannulation is established on the basis of axillary artery cannulation;

[0048] Figure 3 In the process, the ascending aorta and aortic arch are further cut off, and the three brachiocephalic vessels are transected; at this time, the blood circulation involved in the three brachiocephalic vessels will inevitably be in an abnormal state;

[0049] Figure 4A In the process, a stent-vascular graft of an appropriate model is selected and implanted into the true lumen of the descending aorta through the distal port of the aortic arch; at this time, the blood circulation involved in the descending aorta will inevitably be in an abnormal state;

[0050] Figure 4B In, yes Figure 4A The stent graft shown is deployed. Figure 4C The state after release is shown. The purpose of release is to expand the stent and closely adhere to the descending aorta so that the stent can serve as a medium to connect the descending aorta and Figure 5A The four-branch artificial blood vessel in the thoracic spine; it can be understood that this makes the descending aorta a descending aorta with a stent vessel, which is exactly Figure 4A , Figure 4B The stent-vascular technique in the art is used as a special artificial blood vessel;

[0051] Figure 5A The selection of diameter and Figure 4A , Figure 4B The four-branch artificial blood vessel equivalent to the middle stent vessel is ready to be anastomosed with the descending aorta; at this time, it can be noticed that one side of the four-branch artificial blood vessel trunk has three branch blood vessels, which can correspond to the three brachiocephalic blood vessels, while the only branch on the other side of the four-branch artificial blood vessel trunk has other uses, as detailed below;

[0052] Figure 6 The distal end of the main blood vessel of the four-branch artificial blood vessel (i.e. the distal end of the artificial blood vessel trunk) and Figure 4B The descending aorta with stent graft after anastomosis is shown in the figure;

[0053] In addition, combined Figure 6 , Figure 7 , it can be found that the only branch on the other side of the four-branch artificial blood vessel trunk is used as an artificial blood vessel perfusion branch, and the other end of the arterial pump tube is inserted therein; it can be understood that the unshown end of the arterial pump tube is connected to the arterial pump tube and its system; further, see Figure 8, it can be understood that after the connection of the arterial pump tube through the perfusion branch, the artificial blood vessel trunk, and the descending aorta is established, Figure 8 In the embodiment of the present invention, after clamping the three branch vessels of the artificial blood vessel and the end of the main trunk of the artificial blood vessel away from the descending aorta, the circulation of the lower body can be restored through the artificial blood vessel perfusion branch. Therefore, this means that the four-branch artificial blood vessel in the prior art can only restore the circulation of the lower body at this time, which inevitably poses a risk of harm to the living body. Moreover, although the circulation of the lower body is restored at this time, the three brachiocephalic vessels are still in a clamped state.

[0054] Until 9A to 9C , one of the three branch vessels of the four-branch artificial blood vessel, for example, the middle branch vessel is anastomosed with the left common carotid artery end;

[0055] Furthermore, Fig. 10A The diagram shows that the proximal segment of the four-branch artificial blood vessel completes the proximal anastomosis at the connection between the original ascending aorta and the heart. After the proximal anastomosis is completed, the lung is inflated, the left heart is vented, and then the ascending aorta clamp is opened to restore myocardial perfusion. At this time, the main blood vessel represented by the trunk of the four-branch artificial blood vessel replaces the original ascending aorta and aortic arch, connecting the ascending aorta and the descending aorta. Fig. 10B It shows the state after releasing the clamp on the main trunk of the four-branch artificial blood vessel close to the heart, so as to show the opening of the ascending aorta clamp;

[0056] Fig.11A The diagram shows a side bifurcation blood vessel of the aforementioned central branch blood vessel of the four-bifurcated artificial blood vessel, that is, one of the three branches in one side of the main trunk of the four-bifurcated artificial blood vessel, which is anastomosed with the left subclavian artery; Fig. 11B It shows the state after anastomosis and release of the forceps;

[0057] Fig. 12A The diagram shows the other side branched blood vessel of the aforementioned central branched blood vessel of the four-branch artificial blood vessel, that is, the last of the three branches in total on one side of the main trunk of the four-branch artificial blood vessel, which is anastomosed with the innominate artery; Fig. 12B It shows the state after anastomosis and after the clamp is released. At this point, all three branches on one side of the trunk of the four-branch artificial blood vessel are anastomosed with the corresponding original blood vessels, and the relevant circulation is restored.

[0058] FIG. 13A to FIG. 13C The diagram shows the cutting and ligation of the only perfusion branch on the other side of the four-branch artificial blood vessel trunk, thereby cutting and ligating the perfusion branch blood vessel;

[0059] It can be understood that the four-branch artificial blood vessel in the prior art:

[0060] During the operation, the ascending aorta and aortic arch need to be cut off, and three brachiocephalic vessels need to be transected. Then, an appropriate type of artificial blood vessel is selected as a special stent blood vessel, which is implanted into the true lumen of the descending aorta through the distal port of the aortic arch. Then, the stent blood vessel is released to expand in the descending aorta.

[0061] Furthermore, a four-branched artificial blood vessel with a diameter equivalent to that of the stented blood vessel is selected, and the distal end of the main blood vessel of the four-branched artificial blood vessel is anastomosed with the descending aorta with the stented blood vessel;

[0062] The other end of the arterial pump tube is inserted into the perfusion branch blood vessel on one side of the four-forked artificial blood vessel, and then all three branch blood vessels on the other side of the four-forked artificial blood vessel are transected by a blocking clamp, and the circulation of the lower body is restored through the perfusion branch blood vessel and the arterial pump tube;

[0063] Furthermore, the middle bifurcation of the three branch vessels was anastomosed with the left common carotid artery. After the proximal anastomosis was completed, the lung was inflated, the left heart was vented, the ascending aorta clamp was opened, and myocardial perfusion was restored.

[0064] Then, the bifurcated blood vessel corresponding to the left subclavian artery among the three branch vessels anastomoses with the left subclavian artery;

[0065] Furthermore, the last bifurcated vessel among the three branch vessels corresponding to the innominate artery anastomoses with the innominate artery;

[0066] Above, the anastomosis with three brachiocephalic vessels is completed;

[0067] Finally, the perfused branch vessels were cut and ligated.

[0068] In summary, when the four-branch artificial blood vessel in the prior art is used for aortic surgery, especially when it is necessary to treat the ascending aorta and aortic arch lesions at the same time, the surgery will cause the lower body circulation to be unable to recover as soon as possible for a period of time, and the three brachiocephalic blood vessels of the left common carotid artery, left subclavian artery, and innominate artery to be unable to recover as soon as possible. This means that the four-branch artificial blood vessel in the prior art has a technical problem of being unable to recover the relevant blood circulation as soon as possible in the application of aortic surgery.

[0069] To this end, in one embodiment, the present disclosure discloses a novel artificial blood vessel for aortic surgery, see Fig.14A As shown, where:

[0070] The artificial blood vessel comprises an artificial blood vessel trunk (1), an artificial blood vessel first-level branch (2) on one side of the trunk, and a first branch blood vessel (3) on the other side of the trunk;

[0071] The diameter of the artificial blood vessel trunk is larger than the diameter of the first-level branch of the artificial blood vessel, and the diameter of the first-level branch of the artificial blood vessel is larger than the diameter of the first branch blood vessel;

[0072] The bottom end of the first-level branch of the artificial blood vessel is connected to the main trunk of the artificial blood vessel, and the top end of the first-level branch of the artificial blood vessel is respectively connected to the second branch blood vessel (4) and the third branch blood vessel (5).

[0073] For the above embodiment, the new multi-branch design can restore the blood circulation of the living body as soon as possible. FIG. 14C to FIG. 19 The invention also provides an explanation of the use of such an artificial blood vessel in surgery.

[0074] In one embodiment:

[0075] Two tubes extend from the top of the first-level branch of the artificial blood vessel, and the two tubes respectively form a second branch blood vessel (4) and a third branch blood vessel (5).

[0076] In one embodiment:

[0077] The length of the first-level branch (2) of the artificial blood vessel is shorter than the length of the first branch blood vessel (3).

[0078] The above lengths refer to the factory default lengths, because the trunk or related branches can be shortened during surgery. It can be understood that the artificial blood vessel trunk (1), the artificial blood vessel first-level branch (2), the second branch blood vessel (4) and the third branch blood vessel (5) are connected; the artificial blood vessel trunk (1) and the first branch blood vessel (3) are connected.

[0079] Fig. 14B The novel artificial blood vessel disclosed in the present disclosure in another embodiment is illustrated from another angle.

[0080] The superiority of the technical effect of the artificial blood vessel disclosed in the present disclosure needs to be described through the following example of an aortic surgery process:

[0081] See also Fig. 14C As shown:

[0082] Surgical step 1:

[0083] Proximal ascending aorta anastomosis stage:

[0084] After proper anesthesia, routine disinfection and draping were performed, and the right femoral artery and axillary artery were freed for later use;

[0085] The midline thoracotomy was performed to free and expose the aortic arch and brachiocephalic vessels;

[0086] Heparinization, femoral artery, axillary artery, and right atrium cannulation to establish extracorporeal circulation, and cooling to 32°C for protection;

[0087] Use A and B vascular clamps to clamp the proximal end of the innominate artery and the aortic arch between the innominate artery and the left common carotid artery respectively; C represents the axillary artery cannula for extracorporeal circulation, which is first clamped by A in the current state shown in the figure, and the right subclavian artery (axillary artery) IV' and the right common carotid artery III' are connected to C; the left common carotid artery III and the left subclavian artery IV are still connected to the descending aorta;

[0088] The ascending aorta was cut open, the blood clots were carefully cleaned, ice chips were applied to cool the heart surface, and blood-containing cardioplegia solution was perfused into the openings of the left and right coronary arteries.

[0089] After the heart stops beating well, trim the proximal end of the ascending aorta, select a suitable model of the artificial blood vessel described in the present disclosure according to the size of the patient's aorta, trim the artificial blood vessel trunk to a suitable length, and anastomose the proximal end (1a) of the artificial blood vessel trunk with the aortic root (I) to form I-1a.

[0090] For further information, see Fig.15 As shown:

[0091] Surgical step 2-distal ascending aorta anastomosis:

[0092] The distal end of the artificial vascular trunk (1b) was anastomosed with the proximal end of the trimmed aortic arch (Va) to form Va-1b. The air was fully exhausted, the vascular clamp was opened (B), the heart was restarted, and the temperature was slowly restored.

[0093] Obviously, after the above two surgical steps, the artificial blood vessel disclosed in the present disclosure can make the heart beat again and slowly rewarm, which means that the circulation between the heart and the descending aorta has begun to be normal. This makes the artificial blood vessel disclosed in the present disclosure start the lower body circulation earlier than the four-branch artificial blood vessel exemplified in the prior art.

[0094] For further information, see Fig.16 As shown:

[0095] Surgical step 3-Adjustment of the angle of the artificial blood vessel:

[0096] During the rewarming period, according to the position and direction of the patient's brachiocephalic blood vessels, the angle α between the primary branch (2) and the main trunk, and the angle β between the first branch blood vessel (3) and the main trunk are adjusted through the knotting site on the outer wall of the artificial blood vessel. Use silk thread to tie the k1-a1 and k1-a2 sites on the main trunk of the artificial blood vessel (1) with the k2-1 and k2-2 of the primary branch (2), respectively, and adjust the angle α so that the distal end of the third branch blood vessel (5) is as far as possible toward the distal end of the left common carotid artery, ready to anastomose with the left common carotid artery. Then tie the k1-b1 site on the main trunk (1) and the k3-1 site on the branch (3), and adjust the angle β so that the distal end of the branch blood vessel (3) is as far as possible toward the distal end of the left subclavian artery, ready to anastomose with the left subclavian artery.

[0097] For further information, see Fig.17 As shown:

[0098] Surgical step 4-left common carotid and left subclavian anastomosis:

[0099] The proximal end of the left common carotid artery (IIIa) was clamped and cut off, the third branch vessel (5) was trimmed to an appropriate length, and its distal end (5b) was anastomosed with the proximal end of the left common carotid artery (IIIa) to form IIIa-5b. Similarly, the proximal end of the left subclavian artery (IVa) was clamped and cut off, the first branch vessel (3) was trimmed to an appropriate length, and its distal end (3b) was anastomosed with the proximal end of the left subclavian artery (IVa) to form Iva-3b. At this point, the circulation of the left common carotid artery and the left subclavian artery can be restored.

[0100] For further information, see Fig.18 As shown:

[0101] Surgical step 5-innominate artery anastomosis:

[0102] The second branch vessel (4) is trimmed to an appropriate length, and its distal end (4b) is anastomosed with the proximal end of the innominate artery (IIa) to form IIa-4b. Protamine is used to neutralize heparin, and the axillary artery and femoral artery extracorporeal circulation cannulas are removed respectively, and hemostasis is performed strictly. At this point, the circulation of the innominate artery can be restored.

[0103] For further information, see Fig.19 As shown:

[0104] Surgical step 6-stent placement:

[0105] The interventional physician performed aortic angiography to determine the location of the lesion and inserted the stent graft through the femoral artery. The proximal end of the stent was located at the distal end of the artificial blood vessel trunk (1) and the bifurcation. After repeatedly confirming the release site, the stent graft was released. Aortic angiography was performed again to show that the stent was in a good position. After confirming that there was no obvious endoleak, the catheter guidewire was removed. Strict hemostasis was performed, and pericardial and mediastinal drainage was placed. After checking the gauze and instruments to make sure they were correct, the chest was closed layer by layer. Fig.19 It is shown that the final stent is mainly in the inner area of ​​the aortic arch V and the descending aorta VI.

[0106] In summary, through the exemplary application of the artificial blood vessel, the artificial blood vessel disclosed in the present disclosure obviously overcomes the technical problem that the artificial blood vessels in the prior art cannot restore the relevant blood circulation as quickly as possible.

[0107] In another embodiment:

[0108] The angle α between the first-level branch (2) of the artificial blood vessel and the main trunk (1) of the artificial blood vessel is adjustable. In this way, the anastomosis angle between the second branch blood vessel (4) and the third branch blood vessel (5) and the corresponding original blood vessel when used in surgery can be adjusted.

[0109] In another embodiment:

[0110] The angle β between the first branch blood vessel (3) and the artificial blood vessel trunk (1) is adjustable. In this way, the anastomosis angle between the first branch blood vessel (3) and the corresponding original blood vessel when used in surgery can be adjusted.

[0111] In another embodiment:

[0112] The angle γ between the second branch blood vessel (4) and the third branch blood vessel (5) is adjustable. In this way, the anastomotic angle between the second branch blood vessel (4) and the third branch blood vessel (5) and the corresponding original blood vessel during surgery can be adjusted.

[0113] In another embodiment:

[0114] The adjustable ranges of the angles α and β are both 30-60 degrees, and the adjustable range of the angle γ is 0-30 degrees.

[0115] In another embodiment:

[0116] The angle between the first-order branch (2) and the first branch blood vessel (3) is between 60 and 120 degrees.

[0117] In another embodiment:

[0118] The first-level branch (2) of the artificial blood vessel and the first branch blood vessel (3) are located at approximately the same position of the main trunk of the artificial blood vessel.

[0119] In another embodiment:

[0120] The trunk is divided into two sections at roughly the same position.

[0121] Exemplarily, one section has a length of 30 to 25 cm;

[0122] The other section is 10 to 15 cm.

[0123] In another embodiment:

[0124] Exemplarily, the diameter of the trunk is 26-32 mm.

[0125] In another embodiment:

[0126] Exemplarily, the diameter of the first-order branches is 16 mm.

[0127] In another embodiment:

[0128] Exemplarily, the diameters of the first to third branch blood vessels are 8-10 mm.

[0129] In another embodiment:

[0130] Exemplarily, the maximum length from the top to the bottom of the first-level branch (2) is 5 cm.

[0131] In another embodiment:

[0132] Exemplarily, the lengths of the first to third branch blood vessels are at most 30 cm.

[0133] In another embodiment:

[0134] The artificial blood vessel trunk, level 1 branches, and first to third branch blood vessels, under the premise of the default factory length, also have the characteristics of expansion and contraction and extrusion, and the length of each part thereof can be further adjusted through the characteristics of expansion and contraction and extrusion.

[0135] In another embodiment:

[0136] The artificial blood vessel trunk, first-level branches, and first to third branch blood vessels, in addition to the default factory appearance, also have a bending characteristic, and the angle between their parts can be further adjusted through the bending characteristic.

[0137] In another embodiment:

[0138] The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge;

[0139] The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge;

[0140] The first upper edge is flush with the second upper edge.

[0141] In another embodiment:

[0142] The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge;

[0143] The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge;

[0144] The first lower edge is flush with the second lower edge.

[0145] In another embodiment:

[0146] The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge;

[0147] The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge;

[0148] The first upper edge is flush with the second upper edge.

[0149] In another embodiment:

[0150] On the first-level branch (2) of the artificial blood vessel, one or more first-level branch knotting sites are arranged near the main trunk of the artificial blood vessel;

[0151] One or more trunk knotting sites are also provided on the artificial blood vessel trunk (1) near the artificial blood vessel first-order branch (2).

[0152] In another embodiment:

[0153] One or more first branch knotting sites are arranged on the first branch blood vessel (3), near the main trunk of the artificial blood vessel;

[0154] One or more trunk knotting sites are also provided on the artificial blood vessel trunk (1) near the first branch blood vessel (3).

[0155] It should be noted that the existence of the aforementioned angle and its adjustable range enable the artificial blood vessel disclosed in the present invention to not only have the aforementioned technical function of restoring blood circulation as quickly as possible during application, but also: compared with the four-branched artificial blood vessel, it can also reduce one branch while still having the characteristics of easy adjustment, flexibility, and maximum prevention of blood vessel bends.

[0156] The knotting sites further disclosed in the embodiments herein further enhance the characteristics of the artificial blood vessels disclosed in the present disclosure, which are easy to adjust, flexible, and maximally prevent the blood vessels from being bent. For example, by connecting the knotting sites of the first branch blood vessel (3) and the artificial blood vessel trunk (1), and connecting the knotting sites of the first-level branch of the artificial blood vessel (2) and the artificial blood vessel trunk (1), the spatial positional relationship between them can be further adjusted. If necessary, one or more corresponding branch knotting sites can also be set on the second branch blood vessel (4) and the third branch blood vessel (5), and can also be connected to the knotting sites of the artificial blood vessel trunk (1) to further adjust the spatial positional relationship between them.

[0157] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0158] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0159] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An artificial blood vessel for aortic surgery, comprising: An artificial blood vessel trunk (1), an artificial blood vessel first-level branch (2) on one side of the trunk, and a first branch blood vessel (3) on the other side of the trunk; The diameter of the artificial blood vessel trunk is larger than the diameter of the first-level branch of the artificial blood vessel, and the diameter of the first-level branch of the artificial blood vessel is larger than the diameter of the first branch blood vessel; The bottom end of the first-level branch of the artificial blood vessel is connected to the main trunk of the artificial blood vessel, and the top end of the first-level branch of the artificial blood vessel is respectively connected to the second branch blood vessel (4) and the third branch blood vessel (5); in, The angle α between the first-level branch (2) of the artificial blood vessel and the main trunk (1) of the artificial blood vessel is adjustable; The angle β between the first branch blood vessel (3) and the artificial blood vessel trunk (1) is adjustable; Adjusting the angle α between the primary branch (2) and the main trunk, and the angle β between the first branch blood vessel (3) and the main trunk through the knotting site of the outer wall of the artificial blood vessel; The existence of the angle and its adjustable range make the artificial blood vessel not only have the technical function of restoring blood circulation as soon as possible during application, but also: compared with the four-branch artificial blood vessel, it can reduce one branch while still having the characteristics of easy adjustment, flexibility, and maximum prevention of blood vessel bends; in, The first-level branch (2) and the first branch blood vessel (3) of the artificial blood vessel are located at the same position of the main trunk of the artificial blood vessel; The distal end 1b of the artificial blood vessel trunk is anastomosed with the proximal end Va of the aortic arch to form Va-1b; The distal end 5b of the third branch blood vessel (5) is anastomosed with the proximal end IIIa of the left common carotid artery to form IIIa-5b; the distal end 3b of the first branch blood vessel (3) is anastomosed with the proximal end IVa of the left subclavian artery to form IVa-3b; The distal end 4b of the second branch blood vessel (4) is anastomosed with the proximal end IIa of the innominate vessel to form IIa-4b.

2. The artificial blood vessel according to claim 1, wherein: The angle γ between the second branch blood vessel (4) and the third branch blood vessel (5) is adjustable.

3. The artificial blood vessel according to claim 1, wherein: The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge; The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge; The first upper edge is flush with the second upper edge.

4. The artificial blood vessel according to claim 1, wherein: The junction between the bottom end of the first-level branch (2) of the artificial blood vessel and the main trunk of the artificial blood vessel has a first upper edge and a first lower edge; The junction between the first branch blood vessel (3) and the artificial blood vessel trunk has a second upper edge and a second lower edge; The first lower edge is flush with the second lower edge.

5. The artificial blood vessel according to claim 1, wherein: On the first-level branch (2) of the artificial blood vessel, one or more first-level branch knotting sites are arranged near the main trunk of the artificial blood vessel; One or more trunk knotting sites are also provided on the artificial blood vessel trunk (1) near the artificial blood vessel first-order branch (2).

6. The artificial blood vessel according to claim 1, wherein: One or more first branch knotting sites are arranged on the first branch blood vessel (3), near the main trunk of the artificial blood vessel; One or more trunk knotting sites are also provided on the artificial blood vessel trunk (1) near the first branch blood vessel (3).

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