Quick-connect four-branch artificial blood vessel for perfusion

Abstract

The present invention relates to a quick-connect four-branch artificial blood vessel for perfusion, comprising a main artificial blood vessel and a brachiocephalic artery branch artificial blood vessel, a left common carotid artery secondary branch artificial blood vessel and a left subclavian artery secondary branch artificial blood vessel connected to the main artificial blood vessel; the characteristics are: the distal ends of the left common carotid artery secondary branch artificial blood vessel and the left subclavian artery secondary branch artificial blood vessel are respectively provided with reverse-snap connectors; the main artificial blood vessel is also provided with an arterial perfusion branch artificial blood vessel for connecting to extracorporeal circulation. The present invention has an ingenious structure and a reasonable design, and can solve the problem of insufficient cerebral perfusion during aortic arch replacement surgery in the prior art, which easily leads to neurological complications, and can be quickly and reliably fixed without time-consuming suturing, and the operation is fast and convenient, which can greatly save operation time, reduce the difficulty of surgical operation, and improve the survival rate of patients.

Description

Technical Field

[0001] The invention relates to an artificial blood vessel used in aortic arch replacement surgery, in particular to a quick-connect four-branch artificial blood vessel for perfusion, belonging to the technical field of medical device design. Background Art

[0002] When aortic surgery involves aortic arch replacement surgery, a long deep hypothermic circulatory arrest process is required. During this process, the body temperature drops to 18-25°C. At this time, the brain is mostly unilaterally perfused, and the rest of the organs are in an ischemic state with blood perfusion stopped. There is a possibility of insufficient brain perfusion during this operation, which can lead to a series of postoperative neurological complications such as coma and delirium. At present, most brain perfusions are performed unilaterally through axillary artery cannulation. Axillary artery cannulation itself increases the operation time and may cause related complications such as brachial plexus injury. Therefore, it is urgent to develop a new artificial blood vessel to solve the current problems, to maximize the intraoperative bilateral whole brain perfusion during deep hypothermic circulatory arrest, and to avoid axillary artery cannulation for systemic perfusion and cooling, thereby improving the success rate of the operation, reducing the operation time and reducing related neurological complications.

[0003] A Chinese patent with application number "CN200920278063.8" discloses an aortic arch branch artificial blood vessel, which includes a main body, a primary branch and two secondary branches, the primary branch is a branch of the main body, and the secondary branch is a branch of the primary branch. This aortic arch branch artificial blood vessel can maintain continuous bilateral cerebral perfusion during aortic arch surgery, thereby reducing damage to the patient's brain caused by ischemia. However, during the operation of this product, each branch needs to be sutured and anastomosed with human blood vessels, and the suturing operation not only takes a long time, but also has high requirements on the doctor's proficiency. In surgery where time is life, any time spent will affect the success rate of the operation and the survival rate of the patient. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a quick-connect four-branch artificial blood vessel for perfusion, which has an ingenious structure and a reasonable design, and can solve the problem of insufficient cerebral perfusion during aortic arch replacement surgery in the prior art, which easily leads to neurological complications. The invention can also be quickly and reliably fixed without the need for time-consuming suturing, and is quick and convenient to operate, which can greatly save operation time, reduce the difficulty of surgical operation, and improve the survival rate of patients.

[0005] According to the technical solution provided by the present invention: a quick-connect four-branch artificial blood vessel for perfusion, comprising a main artificial blood vessel and a brachiocephalic artery branch artificial blood vessel, a left common carotid artery secondary branch artificial blood vessel and a left subclavian artery secondary branch artificial blood vessel connected and communicated with the main artificial blood vessel; characterized in that: the distal ends of the left common carotid artery secondary branch artificial blood vessel and the left subclavian artery secondary branch artificial blood vessel are respectively provided with reverse snap connectors; the reverse snap connector comprises a connecting ring, one end of the connecting ring is integrally connected to the distal ends of two secondary branch artificial blood vessels, the other end of the connecting ring is connected to an inserted stent tube, an elastic reverse snap ring is provided at one end of the connecting ring facing the secondary branch artificial blood vessel, the elastic reverse snap ring is located at the periphery of the secondary branch artificial blood vessel, an arc groove is provided at the position of the outer peripheral surface of the elastic reverse snap ring adjacent to the connecting ring, and the elastic reverse snap ring is provided with a quick tightening structure; the main artificial blood vessel is also provided with an arterial perfusion branch artificial blood vessel for connecting to extracorporeal circulation.

[0006] As a further improvement of the present invention, the proximal ends of the left common carotid artery secondary branch artificial blood vessel and the left subclavian artery secondary branch artificial blood vessel are commonly connected to the distal end of a common trunk branch artificial blood vessel, and the proximal end of the common trunk branch artificial blood vessel is connected to the main artificial blood vessel.

[0007] As a further improvement of the present invention, the brachiocephalic artery branch artificial blood vessel is connected to the end of the main artificial blood vessel and the center is located on the same straight line; the common trunk branch artificial blood vessel is arranged on one side of the main artificial blood vessel, and the angle between the common trunk branch artificial blood vessel and the main artificial blood vessel is 30 to 45°; the center of the left common carotid artery secondary branch artificial blood vessel and the common trunk branch artificial blood vessel are located on the same straight line, and the angle between the left subclavian artery secondary branch artificial blood vessel and the common trunk branch artificial blood vessel is 30 to 45°; the arterial perfusion branch artificial blood vessel is connected to the other side of the main artificial blood vessel, and the angle between the arterial perfusion branch artificial blood vessel and the main artificial blood vessel is 60 to 70°.

[0008] As a further improvement of the present invention, the diameter of the main artificial blood vessel is 12 to 14 mm, and the length is 10 to 15 cm; the diameter of the brachiocephalic artery branch artificial blood vessel is 10 to 12 mm, and the length is 10 to 15 cm; the diameter of the common trunk branch artificial blood vessel is 6 to 10 mm, and the length is 10 to 15 cm; the diameter of the left common carotid artery secondary branch artificial blood vessel and the left subclavian artery secondary branch artificial blood vessel are 6 to 10 mm, and the length is 10 to 15 cm; the diameter of the arterial perfusion branch artificial blood vessel is 10 to 12 mm, and the length is 12 to 15 cm.

[0009] As a further improvement of the present invention, the left common carotid artery secondary branch artificial blood vessel and the left subclavian artery secondary branch artificial blood vessel are directly connected to the main artificial blood vessel.

[0010] As a further improvement of the present invention, the rapid tightening structure includes a tightening wire, and a tightening wire groove is provided in the elastic buckle ring. The tightening wire groove is spirally shaped and extends along the length direction of the elastic buckle ring. The tightening wire is passed through the tightening wire groove, and the tightening wire groove is provided with lead-out holes for the two ends of the tightening wire to pass through.

[0011] As a further improvement of the present invention, the end of the connecting ring facing the inserted bracket tube is provided with three circumferentially evenly distributed support rods, the inner ends of the three support rods are provided with bending sections bent toward the center, and the inner ends of the three bending sections abut against each other at the same point.

[0012] As a further improvement of the present invention, the bending section is Z-shaped, and the abutment points of the three bending sections are close to the middle part of the support rod.

[0013] As a further improvement of the present invention, an annular convex portion is provided at one end of the connecting ring facing the inserted stent tube, the annular convex portion is located at the periphery of the inserted stent tube, and a plurality of suture threading grooves are evenly distributed on the annular convex portion.

[0014] As a further improvement of the present invention, the reverse buckle connector is made of medical-grade silicone or rubber material as a whole, and the elastic reverse buckle ring is provided with a plurality of notches evenly distributed in the circumferential direction.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1) The present invention has an ingenious structure and a reasonable design, and can solve the problem of insufficient cerebral perfusion during aortic arch replacement surgery in the prior art, which easily leads to neurological complications. It can also be quickly and reliably fixed without time-consuming suturing, and is quick and convenient to operate, which can greatly save operation time, reduce the difficulty of surgical operation, and improve the survival rate of patients.

[0017] 2) The present invention can perfuse the entire bilateral brain and the whole body during surgery, thereby maximally ensuring brain perfusion during deep hypothermic circulatory arrest, reducing postoperative neurological complications, simplifying surgical operations and shortening surgical time, thereby ultimately achieving the purpose of improving the success rate of surgery and reducing surgery-related complications; in addition, during hybrid surgery, arterial perfusion branch vessels can also provide an implantation pathway for interventional stents, greatly facilitating surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention.

[0019] Figure 2 for Figure 1 A is an enlarged schematic diagram.

[0020] Figure 3It is a structural side view of the flip-on connector in Example 1 of the present invention.

[0021] Figure 4 This is a connection diagram of the clinical application of Example 1 of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of Example 2 of the present invention.

[0023] Description of the accompanying drawings: 1-main body artificial blood vessel, 2-brachiocephalic artery branch artificial blood vessel, 3-common trunk branch artificial blood vessel, 4-left common carotid artery secondary branch artificial blood vessel, 5-left subclavian artery secondary branch artificial blood vessel, 6-reverse buckle connector, 6.1-connecting ring, 6.2-elastic reverse buckle ring, 6.2a-arc-shaped groove, 6.2b-clamping wire groove, 6.3-tightening wire, 6.4-support rod, 6.4a-bending section, 6.5-annular protrusion, 6.5a-suture threading groove, 6.6-insertion stent tube, 7-arterial perfusion branch artificial blood vessel, DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0025] Example 1

[0026] like Figure 1 to Figure 3 As shown, Example 1 discloses a quick-connect four-branch artificial blood vessel for perfusion, including a main artificial blood vessel 1, a brachiocephalic artery branch artificial blood vessel 2, a common trunk branch artificial blood vessel 3, a left common carotid artery secondary branch artificial blood vessel 4 and a left subclavian artery secondary branch artificial blood vessel 5, the proximal ends of the brachiocephalic artery branch artificial blood vessel 2 and the common trunk branch artificial blood vessel 3 are respectively connected to one end of the main artificial blood vessel 1, and the left common carotid artery secondary branch artificial blood vessel 4 and the left subclavian artery secondary branch artificial blood vessel 5 are respectively connected to the distal end of the common trunk branch artificial blood vessel 3; the distal ends of the left common carotid artery secondary branch artificial blood vessel 4 and the left subclavian artery secondary branch artificial blood vessel 5 are respectively provided with A reverse snap connector 6 is provided; the reverse snap connector 6 comprises a connecting ring 6.1, one end of which is integrally connected to the distal ends of two secondary branch artificial blood vessels, the other end of which is connected to an insertion stent tube 6.6, an elastic reverse snap ring 6.2 is provided at one end of the connecting ring 6.1 facing the secondary branch artificial blood vessel, the elastic reverse snap ring 6.2 is located at the periphery of the secondary branch artificial blood vessel, an arc groove 6.2a is provided at the portion of the outer peripheral surface of the elastic reverse snap ring 6.2 adjacent to the connecting ring 6.1, and the elastic reverse snap ring 6.2 is provided with a quick tightening structure; the main artificial blood vessel 1 is also provided with an arterial perfusion branch artificial blood vessel 7 for connecting to the extracorporeal circulation.

[0027] The clinical use operation process of this embodiment 1 is as follows:

[0028] After conventional thoracotomy, the end of the main artificial blood vessel 1 away from the brachiocephalic artery branch artificial blood vessel 2 is clamped with a blocking clamp, and then the brachiocephalic artery branch artificial blood vessel 2 is connected to the aortic arch 8 [as shown in FIG. Figure 4 The innominate artery 8.1 is anastomosed end to end, and the anastomosis connection method is a conventional suturing method. Then the distal end of the left common carotid artery secondary branch artificial blood vessel 4 is anastomosed to the left common carotid artery 8.2 of the aortic arch 8. Figure 4 The middle dotted line indicates that the anastomotic connection method is as follows: insert the inserted stent tube 6.6 on the reverse snap connector 6 into the left common carotid artery 8.2, and stop inserting when the connecting ring 6.1 in the reverse snap connector 6 approaches the end of the left common carotid artery 8.2; then release the inserted stent tube 6.6 to support the left common carotid artery 8.2 outwardly; then pull the elastic reverse snap ring 6.2 in the reverse snap connector 6 to make the elastic reverse snap ring 6.2 pass over the connecting ring 6.1 and turn over to the outer surface of the left common carotid artery 8.2, and the elastic reverse snap ring 6.2 tightens the left common carotid artery 8.2 and the inserted stent tube 6.6 through its own elasticity, and finally tightens the elastic reverse snap ring 6.2 through the quick tightening structure, and the arc groove 6.2a corresponds to the edge of the connecting ring 6.1, so that the elastic reverse snap ring 6.2 tightens the left common carotid artery 8.2. Then, the distal end of the left subclavian artery secondary branch artificial blood vessel 5 is anastomosed to the left subclavian artery 8.3 of the aortic arch 8 in the same manner as above.

[0029] After the anastomosis connection of the present invention is completed, the conventional right atrium is inserted into the vena cava tube, and then the arterial perfusion branch artificial blood vessel 7 is connected to the extracorporeal circulation device, and the blood in the extracorporeal circulation device flows from the arterial perfusion branch artificial blood vessel 7 into the main artificial blood vessel 1, and then from the main artificial blood vessel 1 into the brachiocephalic artery branch artificial blood vessel 2 and then into the innominate artery 8.1 of the aortic arch 8, thereby achieving perfusion of the whole body of the human body during the operation. In this process, a part of the blood in the main artificial blood vessel 1 will also flow into the left common carotid artery secondary branch artificial blood vessel 4 and the left subclavian artery secondary branch artificial blood vessel 5 through the common trunk branch artificial blood vessel 3, and then enter the left common carotid artery 8.2 and the left subclavian artery 8.3 on the aortic arch 8, thereby achieving perfusion of the bilateral brain during the operation. So far, the present invention not only achieves perfusion of the whole body of the patient during the operation, but also achieves perfusion of both sides of the brain, and does not require axillary artery cannulation, reducing the time of the operation.

[0030] After the whole body perfusion is implemented in this way, the human body can be cooled down [nasopharyngeal temperature is cooled to a medium-low temperature of 25-28°C, and the bladder temperature is reduced to 30°C], and then the heart is stopped, so that the patient's whole body is in a deep hypothermic circulatory arrest state. Due to the existence of the present invention, the brain can still be perfused bilaterally at this time, and during the perfusion process, the aortic arch 8 is opened, surgery is performed on it, and a descending aorta stent is implanted; finally, the arch artificial blood vessel is anastomosed with the proximal end of the aorta, the blocking clamp is opened, the heart is restored to beat, the machine is stopped and the tube is removed, and the chest is closed to stop bleeding, and the whole operation is completed.

[0031] Since the reverse-snap connector 6 can be quickly reverse-snap fixed on the outer wall of the innominate artery 8.1, the connection is reliable and will not shift. At the same time, the reverse-snap connector 6 also plays a hemostatic role, no time-consuming suturing is required, and the operation is fast and convenient. Therefore, the present invention can quickly establish whole-body extracorporeal circulation and achieve cooling, and ensure bilateral whole-brain perfusion during the entire operation, maximize bilateral brain perfusion during deep hypothermic circulatory arrest, reduce postoperative neurological complications, and ultimately achieve the goal of improving the success rate of the operation. In addition, during the hybrid operation, the arterial perfusion branch artificial blood vessel 7 of the present invention can also provide an interventional stent implantation route, which greatly facilitates the operation.

[0032] like Figure 1 As shown, in this embodiment 1, the brachiocephalic artery branch artificial blood vessel 2 is connected to the end of the main artificial blood vessel 1 and the center is located on the same straight line; the common trunk branch artificial blood vessel 3 is arranged on one side of the main artificial blood vessel 1, and the angle between the common trunk branch artificial blood vessel 3 and the main artificial blood vessel 1 is 30-45°; the left common carotid artery secondary branch artificial blood vessel 4 and the center of the common trunk branch artificial blood vessel 3 are located on the same straight line, and the angle between the left subclavian artery secondary branch artificial blood vessel 5 and the common trunk branch artificial blood vessel 3 is 30-45°; the arterial perfusion branch artificial blood vessel 7 is connected to the other side of the main artificial blood vessel 1, and the angle between the arterial perfusion branch artificial blood vessel 7 and the main artificial blood vessel 1 is 60-70°. Such a configuration enables the present invention to smoothly perfuse the whole body and bilateral brains during the operation without the phenomenon of vascular twisting, pulling or bending.

[0033] In this embodiment 1, the diameter of the main artificial blood vessel 1 is 12-14 mm, and the length is 10-15 cm; the diameter of the brachiocephalic artery branch artificial blood vessel 2 is 10-12 mm, and the length is 10-15 cm; the diameter of the common trunk branch artificial blood vessel 3 is 6-10 mm, and the length is 10-15 cm; the diameter of the left common carotid artery secondary branch artificial blood vessel 4 and the left subclavian artery secondary branch artificial blood vessel 5 are 6-10 mm, and the length is 10-15 cm; the diameter of the arterial perfusion branch artificial blood vessel 7 is 10-12 mm, and the length is 12-15 cm. Such an arrangement can make the brachiocephalic artery branch artificial blood vessel 2, the left common carotid artery secondary branch artificial blood vessel 4, and the left subclavian artery secondary branch artificial blood vessel 5 in the present invention better anastomosed with the innominate artery 8.1, the left common carotid artery 8.2, and the left subclavian artery 8.3 of the aortic arch 8 of most people.

[0034] like Figure 2 , Figure 3 As shown, in this embodiment 1, the rapid tightening structure includes a tightening wire 6.3, and a tightening wire groove 6.2b is provided in the elastic buckle ring 6.2. The tightening wire groove 6.2b is a spiral extending along the length direction of the elastic buckle ring 6.2. The tightening wire 6.3 is passed through the tightening wire groove 6.2b, and the tightening wire groove 6.2b is provided with lead-out holes for the two ends of the tightening wire 6.3 to pass through. In this way, by tightening the two ends of the tightening wire 6.3, the elastic buckle ring 6.2 can be fully tightened on the outer wall of the left common carotid artery 8.2 and the left subclavian artery 8.3, so that the left common carotid artery 8.2, the left subclavian artery 8.3 and the inserted stent tube 6.6 are connected more tightly.

[0035] like Figure 2 , Figure 3 As shown, in this embodiment 1, the end of the connecting ring 6.1 facing the inserted bracket tube 6.6 is provided with three circumferentially evenly distributed support rods 6.4, and the inner ends of the three support rods 6.4 are all provided with bent sections 6.4a bent toward the center, and the inner ends of the three bent sections 6.4a abut against each other at the same point. In this way, the three support rods 6.4 can play an auxiliary supporting role to prevent the inserted bracket tube 6.6 from being squeezed and deformed by the elastic buckle ring 6.2 and the quick tightening structure.

[0036] like Figure 2 , Figure 3 As shown, in this embodiment 1, the bending section 6.4a is Z-shaped, and the contact points of the three bending sections 6.4a are close to the middle part of the support rod 6.4. Such an arrangement can improve the support strength of the three support rods 6.4.

[0037] like Figure 2 , Figure 3As shown, in this embodiment 1, the end of the connecting ring 6.1 facing the inserted stent tube 6.6 is provided with an annular protrusion 6.5, the annular protrusion 6.5 is located at the periphery of the inserted stent tube 6.6, and a plurality of suture threading grooves 6.5a are evenly arranged on the annular protrusion 6.5. With such a configuration, the left common carotid artery 8.2 and the left subclavian artery 8.3 can also be connected to the present invention by suture, further broadening the scope of application.

[0038] In the present invention, in order to allow the elastic buckle ring 6.2 to pass over the connecting ring 6.1 more easily, the elastic buckle ring 6.2 is preferably provided with a plurality of circumferentially evenly distributed notches. The buckle connector 6 is preferably made of medical grade silicone or rubber material.

[0039] Example 2

[0040] like Figure 5 As shown, Example 2 discloses a quick-connect four-branch artificial blood vessel for perfusion, which differs from Example 1 in that the four-branch artificial blood vessel in Example 2 eliminates the common trunk branch artificial blood vessel 3, and the left common carotid artery secondary branch artificial blood vessel 4 and the left subclavian artery secondary branch artificial blood vessel 5 are directly connected to the main artificial blood vessel 1.

[0041] The clinical use operation process of this embodiment 2 is the same as that of embodiment 1, that is, the brachiocephalic artery branch artificial blood vessel 2 is anastomosed to the innominate artery 8.1 of the aortic arch 8, the distal end of the left common carotid artery secondary branch artificial blood vessel 4 is anastomosed to the left common carotid artery 8.2 of the aortic arch 8, the distal end of the left subclavian artery secondary branch artificial blood vessel 5 is anastomosed to the left subclavian artery 8.3 of the aortic arch 8, and the arterial perfusion branch artificial blood vessel 7 is connected to the extracorporeal circulation device. The remaining steps are not repeated here.

[0042] In this embodiment 2, in order to prevent the four-branch artificial blood vessel from being pulled or bent, the diameter of the main artificial blood vessel 1 is 12-14 mm and the length is 10-15 cm; the diameter of the brachiocephalic artery branch artificial blood vessel 2 is 10-12 mm and the length is 10-15 cm; the diameter of the left common carotid artery secondary branch artificial blood vessel 4 and the left subclavian artery secondary branch artificial blood vessel 5 are 6-10 mm and the length is 10-15 cm, and the angles between the left common carotid artery secondary branch artificial blood vessel 4 and the left subclavian artery secondary branch artificial blood vessel 5 and the main artificial blood vessel 1 are both set to 30-45°; the diameter of the arterial perfusion branch artificial blood vessel 7 is 10-12 mm and the length is 12-15 cm.

[0043] The above description is only a preferred embodiment of the present invention, and the above specific embodiment is not intended to limit the present invention. Various deformations and modifications may occur within the scope of the technical concept of the present invention, and any modification, modification or equivalent replacement made by a person of ordinary skill in the art based on the above description shall fall within the scope of protection of the present invention.

Claims

1. A quick-connect four-branch artificial blood vessel for perfusion, comprising a main artificial blood vessel (1) and a brachiocephalic artery branch artificial blood vessel (2), a left common carotid artery secondary branch artificial blood vessel (4) and a left subclavian artery secondary branch artificial blood vessel (5) connected and communicating with the main artificial blood vessel (1); the distal ends of the left common carotid artery secondary branch artificial blood vessel (4) and the left subclavian artery secondary branch artificial blood vessel (5) are respectively provided with a reverse-snap connector (6); the reverse-snap connector (6) comprises a connecting ring (6.1), one end of the connecting ring (6.1) is integrally connected to the distal ends of two secondary branch artificial blood vessels, the other end of the connecting ring (6.1) is connected to an insertion stent tube (6.6), and the connecting ring (6.1) faces the secondary branches. An elastic buckle ring (6.2) is provided at one end of the artificial blood vessel, the elastic buckle ring (6.2) is located at the periphery of the secondary branch artificial blood vessel, an arc-shaped groove (6.2a) is provided at a position adjacent to the connecting ring (6.1) on the outer peripheral surface of the elastic buckle ring (6.2), and the elastic buckle ring (6.2) is provided with a quick tightening structure; the main artificial blood vessel (1) is also provided with an arterial perfusion branch artificial blood vessel (7) for connecting to an extracorporeal circulation; the proximal ends of the left common carotid artery secondary branch artificial blood vessel (4) and the left subclavian artery secondary branch artificial blood vessel (5) are connected to the distal end of a common trunk branch artificial blood vessel (3), and the proximal end of the common trunk branch artificial blood vessel (3) is connected and communicated with the main artificial blood vessel (1); the characteristics are: The end of the connecting ring (6.1) facing the inserted support tube (6.6) is provided with three circumferentially evenly distributed support rods (6.4), the inner ends of the three support rods (6.4) are provided with bent sections (6.4a) bent toward the center, and the inner ends of the three bent sections (6.4a) are mutually abutted at the same point; the rapid tightening structure comprises a tightening wire (6.3), the elastic buckle ring (6.2) is provided with a tightening wire groove (6.2b), the tightening wire groove (6.2b) is a spiral extending along the length direction of the elastic buckle ring (6.2), and the tightening wire (6.3) is provided with a tightening wire groove (6.2b) in the shape of a spiral extending along the length direction of the elastic buckle ring (6.2). 3) is inserted into the bundled wire groove (6.2b), and the bundled wire groove (6.2b) is provided with lead-out holes for the two ends of the tightening wire (6.3) to pass through; the bending section (6.4a) is Z-shaped, and the abutment point of the three bending sections (6.4a) is close to the middle part of the support rod (6.4); the end of the connecting ring (6.1) facing the insertion bracket tube (6.6) is provided with an annular protrusion (6.5), the annular protrusion (6.5) is located on the periphery of the insertion bracket tube (6.6), and a plurality of suture threading grooves (6.5a) are evenly distributed on the annular protrusion (6.5).

2. The quick-connect four-branch artificial blood vessel for perfusion according to claim 1, characterized in that: The brachiocephalic artery branch artificial blood vessel (2) is connected to the end of the main artificial blood vessel (1) and the centers are located on the same straight line; the common trunk branch artificial blood vessel (3) is arranged on one side of the main artificial blood vessel (1), and the angle between the common trunk branch artificial blood vessel (3) and the main artificial blood vessel (1) is 30 to 45 degrees; the left common carotid artery secondary branch artificial blood vessel (4) and the centers of the common trunk branch artificial blood vessel (3) are located on the same straight line, and the angle between the left subclavian artery secondary branch artificial blood vessel (5) and the common trunk branch artificial blood vessel (3) is 30 to 45 degrees; the arterial perfusion branch artificial blood vessel (7) is connected to the other side of the main artificial blood vessel (1), and the angle between the arterial perfusion branch artificial blood vessel (7) and the main artificial blood vessel (1) is 60 to 70 degrees.

3. The quick-connect four-branch artificial blood vessel for perfusion according to claim 2, characterized in that: The diameter of the main artificial blood vessel (1) is 12 to 14 mm, and the length is 10 to 15 cm; the diameter of the brachiocephalic artery branch artificial blood vessel (2) is 10 to 12 mm, and the length is 10 to 15 cm; the diameter of the common trunk branch artificial blood vessel (3) is 6 to 10 mm, and the length is 10 to 15 cm; the diameter of the left common carotid artery secondary branch artificial blood vessel (4) and the left subclavian artery secondary branch artificial blood vessel (5) are 6 to 10 mm, and the length is 10 to 15 cm; the diameter of the arterial perfusion branch artificial blood vessel (7) is 10 to 12 mm, and the length is 12 to 15 cm.

4. The quick-connect four-branch artificial blood vessel for perfusion as claimed in claim 1, characterized in that: The left common carotid artery secondary branch artificial blood vessel (4) and the left subclavian artery secondary branch artificial blood vessel (5) are directly connected to the main artificial blood vessel (1).

5. The quick-connect four-branch artificial blood vessel for perfusion as claimed in claim 1, characterized in that: The reverse buckle connector (6) is made entirely of medical-grade silicone or rubber material, and the elastic reverse buckle ring (6.2) is provided with a plurality of notches evenly distributed in the circumferential direction.

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