Three-branch stent artificial blood vessel

Abstract

The utility model relates to a three-branch stent artificial blood vessel, which belongs to the field of artificial blood vessels and comprises a main artificial blood vessel and a main covered stent sewn and fixed in the main artificial blood vessel. The main artificial blood vessel is provided with incisions corresponding to positions, thicknesses and sizes of an unknown artery, a left common carotid artery and a left subclavian artery, and a branch artificial blood vessel I, a branch artificial blood vessel II and a branch artificial blood vessel III are respectively and correspondingly sewn and fixed on the incisions; an integrated composite artificial blood vessel assembled in an operation is directly placed from an incision position, an interventional anchoring area for safety of the blood vessel is manufactured through surgical operation, the advantage of minimally invasive interventional therapy is exerted, and the difficulty of interventional therapy in treatment of ascending aorta diseases is solved through the method that a covered stent is placed into the artificial blood vessel. And a large number of tedious steps of anastomosis and hemostasis in an operation are avoided. And the effects of shortening the operation time and replacing the total aortic arch are achieved through quick and simple operation.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial blood vessels, in particular to a three-branch stent artificial blood vessel. Background Art

[0002] The current main surgical method for Stanford type A aortic dissection is the Sun operation (total aortic arch replacement plus elephant trunk stent surgery). The Sun operation mainly includes aortic arch replacement plus stent elephant trunk surgery. Its core is to use stent-type artificial blood vessels to repair the aortic arch and descending aorta, while using deep hypothermic circulatory arrest and selective cerebral perfusion technology to protect the brain from hypoxia damage, including freeing the three major branches of the aortic arch, anastomosis of the distal end of the aortic arch with the artificial blood vessel, anastomosis of the left subclavian artery with the artificial blood vessel, anastomosis of the left common carotid artery with the artificial blood vessel, and anastomosis of the brachiocephalic artery with the artificial blood vessel. This type of surgery requires more operations, hemostasis is often difficult, and the operation time is long. In particular, the anastomosis of the left subclavian artery with the artificial blood vessel is deep and difficult, which seriously affects the patient's prognosis. Utility Model Content

[0003] The embodiment of the utility model provides a three-branch stent artificial blood vessel to solve the above-mentioned technical problems.

[0004] The embodiment of the utility model adopts the following technical scheme: it includes a main artificial blood vessel and a main coated stent sutured and fixed inside the main artificial blood vessel, the two distal ends of the main artificial blood vessel are used for suture connection with human blood vessels, the main artificial blood vessel is provided with incisions corresponding to the positions and thicknesses of the innominate artery, the left common carotid artery and the left subclavian artery, and the incisions are respectively sutured and fixed with branch artificial blood vessel 1, branch artificial blood vessel 2 and branch artificial blood vessel 3, the main artificial blood vessel and the branch artificial blood vessel 1, branch artificial blood vessel 2 and branch artificial blood vessel 3 together form an integrated composite artificial blood vessel, and when the integrated composite artificial blood vessel is placed in the aortic arch, one end of the integrated composite artificial blood vessel is implanted inside the aortic arch from the ascending aorta incision.

[0005] Furthermore, the branch artificial blood vessel one, the branch artificial blood vessel two and the branch artificial blood vessel three are sutured and fixed with the coated stent one, the coated stent two and the coated stent three respectively.

[0006] Furthermore, the lengths of the coated stent one, the coated stent two and the coated stent three are all 2 cm, and the diameters of the coated stent one, the coated stent two and the coated stent three are respectively smaller than the corresponding diameters of the three major branches of the human body.

[0007] Furthermore, the distal end of the main artificial blood vessel overlaps with the main covered stent, and the farthest end is 2 cm away from the subclavian artery, serving as an anchoring area for subsequent interventional treatment. The main covered stent of the composite blood vessel is 3-4 cm away from the brachiocephalic trunk vessel.

[0008] Furthermore, both ends of the main artificial blood vessel are provided with suture identification marks.

[0009] Furthermore, the outer surface of the main artificial blood vessel is provided with marking scales for facilitating the positioning and suturing of the three-branch artificial blood vessels.

[0010] Furthermore, the main artificial blood vessel is made of PTFE material with high stability.

[0011] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0012] In the utility model, branch artificial blood vessels one, two and three are combined with the main artificial blood vessel to form an integrated composite artificial blood vessel, and then the main covered stent, the covered stent one, the covered stent two and the covered stent three are installed in suitable positions in the integrated composite artificial blood vessel for support. When performing the operation, the characteristics of surgical operation combined with intervention are mainly utilized to insert the integrated composite artificial blood vessel from the incision position, which gives full play to the advantages of minimally invasive interventional treatment and solves the difficulties of interventional treatment in the treatment of aortic arch diseases. The relatively fast and simple operation process achieves the effect of shortening the operation time and achieving the total aorta replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the integrated composite artificial blood vessel of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the main stent graft of the utility model;

[0016] Figure 3 It is a schematic diagram of the exploded structure of part of the structure of the utility model.

[0017] Attached photos

[0018] 1. Integrated composite artificial blood vessel; 11. Main artificial blood vessel; 101. Branch artificial blood vessel one; 102. Branch artificial blood vessel two; 103. Branch artificial blood vessel three; 2. Main covered stent; 3. Covered stent one; 4. Covered stent two; 5. Covered stent three; 6. Suture identification mark; 7. Marking scale. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-3 As shown, an embodiment of the utility model provides a three-branch stent artificial blood vessel, including a main artificial blood vessel 11 and a main coated stent 2 sutured and fixed inside the main artificial blood vessel 11, the two distal ends of the main artificial blood vessel 11 are used to connect with human blood vessels, the main artificial blood vessel 11 is provided with incisions corresponding to the positions and thicknesses of the innominate artery, the left common carotid artery and the left subclavian artery, and the incisions are respectively sutured and fixed with branch artificial blood vessel one 101, branch artificial blood vessel two 102 and branch artificial blood vessel three 103, the main artificial blood vessel 11 and the branch artificial blood vessel one 101, the branch artificial blood vessel two 102 and the branch artificial blood vessel three 103 together form an integrated composite artificial blood vessel 1, after the main coated stent 2 is placed in the main artificial blood vessel 11, the length of the main artificial blood vessel 11 is longer than the main coated stent 2, after the main coated stent 2 is placed in the main artificial blood vessel 11, both ends of the main artificial blood vessel 11 have positions for connecting with the ascending aorta and thoracic aorta of the human body.

[0022] When the integrated composite artificial blood vessel 1 is placed in the aortic arch, one end of the integrated composite artificial blood vessel 1 is placed inside the aortic arch from the incision of the ascending aorta and sutured and fixed. The incision operation process at the ascending aorta is as follows: after opening the chest to fully expose the ascending aorta, the aortic arch, and the three major branches on the arch, the specific positions and diameters of the three major branches are measured under direct vision, windows are opened on the main artificial blood vessel according to the actual positions, and branch blood vessels of appropriate diameters are sutured. After the integrated composite blood vessel is completed, the ascending aorta is cut from the top, the aortic arch is cut 1 cm to the left of the three major branches, and the cut is made between the left subclavian artery and the left common carotid artery. Then, the integrated composite artificial blood vessel 1 composed of the main artificial blood vessel 11, the branch artificial blood vessel 101, the branch artificial blood vessel 2 102 and the branch artificial blood vessels is placed in the integrated composite artificial blood vessel 1 from one end until the other end of the integrated composite artificial blood vessel 1 is also inserted into the aortic arch, and then the incision 1 cm to the left of the three major branches is tightened and sutured. After tightening and suturing, the artificial blood vessel is outwrapped and tightened to further stop bleeding.

[0023] like Figure 2 As shown, the branch artificial blood vessel 101, the branch artificial blood vessel 2 102 and the branch artificial blood vessel 3 103 are respectively sutured and fixed with a coated stent 1 3, a coated stent 2 4 and a coated stent 3 5, and the length of the coated stent 1 3, the coated stent 2 4 and the coated stent 3 5 are all 2 cm, which does not affect the support of the branch artificial blood vessel 101, the branch artificial blood vessel 2 102 and the branch artificial blood vessel 3 103, and does not affect the suturing and fixation between the branch artificial blood vessels and the three branch blood vessels of the human body, and the diameters of the coated stent 1 3, the coated stent 2 4 and the coated stent 3 5 are respectively smaller than the corresponding three major branch diameters of the human body. After the branch artificial blood vessel 101, the branch artificial blood vessel 2 102 and the branch artificial blood vessel 3 103 are respectively sutured to the corresponding positions on the main artificial blood vessel 11, the coated stent 1 3, the coated stent 2 4 and the coated stent 3 5 corresponding to the three branch artificial blood vessels are respectively placed in the branch artificial blood vessel 101, the branch artificial blood vessel 2 102 and the branch artificial blood vessel 3 103, and are stretched and then sutured and fixed.

[0024] The distal end of the main artificial blood vessel 11 overlaps with the main covered stent 2, and the farthest end is 2 cm away from the subclavian artery, serving as an anchoring area for subsequent interventional treatment. The main covered stent of the composite blood vessel is 3-4 cm away from the brachiocephalic trunk.

[0025] Both ends of the main artificial blood vessel 11 are provided with suture identification marks 6, and the suture identification marks 6 are located at 2 cm and 5 cm at both ends of the main artificial blood vessel 11. The main artificial blood vessel 11 is mainly used to quickly locate and then suture when suturing and fixing the main artificial blood vessel 11 to the ascending aorta and the thoracic aorta of the human body. The outer surface of the main artificial blood vessel 11 is provided with marking scales 7 for facilitating the positioning and suturing of the three-branch artificial blood vessels, so that the branch artificial blood vessels 101, 102 and 103 can be quickly and accurately found when they are sutured and fixed on the main artificial blood vessel 11.

[0026] The utility model mainly utilizes the characteristics of surgical operation combined with intervention, inserts the one-piece composite artificial blood vessel 1 from the incision position, gives full play to the advantages of minimally invasive interventional treatment, solves the dilemma of interventional treatment in the treatment of aortic arch diseases, shortens the operation time and achieves the effect of total aortic arch replacement. The specific operation process is as follows: after opening the chest and fully exposing the ascending aorta, aortic arch, and three major branches on the arch, the covered stent is placed in the main artificial blood vessel 11, and the main artificial blood vessel 11 is sutured and fixed to the human blood vessel. The artificial blood vessel is relatively long, and the remaining about 10 cm of the artificial blood vessel is not covered by the covered stent. According to the positions of the three major branches of the human body, the artificial blood vessel is cut. Then prepare 2 cm long covered stent 1 3, covered stent 2 4 and covered stent 3 5 which are equal to or slightly thinner than the three major branches, and suture them on the incision of the main artificial blood vessel 11 respectively to form an integrated composite artificial blood vessel 1. Then cut the ascending aorta just above and the aortic arch 1 cm to the left of the three major branches, and cut to between the left subclavian artery and the left common carotid artery. Then, align the distal end of the aorta and the three major branches and insert the integrated composite artificial blood vessel 1, tighten and suture the incision of the aortic arch of the ascending aorta, and after suturing, wrap a trouser-shaped artificial blood vessel between the brachiocephalic trunk and the left common carotid artery to tighten and suture for hemostasis. Finally, suture the artificial blood vessel strips at the roots of the three major branches to tighten and stop bleeding according to the situation.

[0027] The main artificial blood vessel 11 is made of PTFE material with high stability. The full name of PTFE is polytetrafluoroethylene, which is a polymer compound formed by the polymerization of tetrafluoroethylene. It has extremely high thermal stability and chemical resistance, as well as excellent sliding properties, resistivity and non-stick surface. It is widely used in the medical industry. The effect of using it in this technical solution is to ensure the durability and adaptability of the main artificial blood vessel 11.

Claims

1. A three-branch stent artificial blood vessel, comprising a main artificial blood vessel (11) and a main coated stent (2) sutured and fixed inside the main artificial blood vessel (11), characterized in that: The two distal ends of the main artificial blood vessel (11) are used to connect to human blood vessels. The main artificial blood vessel (11) is provided with incisions corresponding to the positions and thicknesses of the innominate artery, the left common carotid artery and the left subclavian artery, and the incisions are sutured and fixed with branch artificial blood vessels one (101), branch artificial blood vessel two (102) and branch artificial blood vessel three (103) respectively. The main artificial blood vessel (11) and the branch artificial blood vessel one (101), branch artificial blood vessel two (102) and branch artificial blood vessel three (103) together form an integrated composite artificial blood vessel (1). When the integrated composite artificial blood vessel (1) is placed in the aortic arch, one end of the integrated composite artificial blood vessel (1) is implanted in the aortic arch from the ascending aorta incision and sutured and fixed.

2. The three-branch stent artificial blood vessel according to claim 1, characterized in that: The branch artificial blood vessel one (101), the branch artificial blood vessel two (102) and the branch artificial blood vessel three (103) are respectively sutured and fixed with the coated stent one (3), the coated stent two (4) and the coated stent three (5).

3. The three-branch stent artificial blood vessel according to claim 2, characterized in that: The lengths of the coated stent one (3), the coated stent two (4) and the coated stent three (5) are all 2 cm, and the diameters of the coated stent one (3), the coated stent two (4) and the coated stent three (5) are respectively smaller than the corresponding diameters of the three major branches of the human body.

4. The three-branch stent artificial blood vessel according to claim 1, characterized in that: The distal end of the main artificial blood vessel (11) overlaps with the main covered stent (2), and the distal end is 2 cm away from the subclavian artery, serving as an anchoring area for subsequent interventional treatment. The main covered stent of the composite blood vessel is 3-4 cm away from the brachiocephalic trunk.

5. The three-branch stent artificial blood vessel according to claim 1, characterized in that: Both ends of the main artificial blood vessel (11) are provided with suture identification marks (6).

6. The three-branch stent artificial blood vessel according to claim 1, characterized in that: The outer surface of the main artificial blood vessel (11) is provided with marking scales (7) for facilitating the positioning and suturing of the three-branch artificial blood vessels.

7. The three-branch stent artificial blood vessel according to claim 1, characterized in that: The main artificial blood vessel (11) is made of PTFE material with high stability.

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