Artificial blood vessel support ring and artificial blood vessel support ring system

Abstract

The present invention discloses an artificial blood vessel support ring and an artificial blood vessel support ring system. The artificial blood vessel support ring includes: a support ring, an anchoring shaft, and anchoring spines, wherein the anchoring spines are rotatably arranged on the anchoring shaft; the artificial blood vessel support ring system includes a stent blood vessel, a balloon, a tie, and any one of the foregoing artificial blood vessel support rings. The support ring of the present invention is made of an elastic material into an annular mesh structure, having good flexibility and not damaging the native blood vessels during use; the anchoring spines can be firmly anchored to the native blood vessels / artificial blood vessels / ties, avoiding displacement of the covered stent and having good wall adhesion; the anchoring spines do not scrape against the wall of the compression catheter, will not cause deformation of the anchoring spines and damage to the wall of the compression catheter, and are convenient for loading; the support ring can be seamlessly attached to the wall of any diseased blood vessel, will not produce endoleak, and has no complications, especially suitable for the situation where the native blood vessels are too narrow.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically to an artificial blood vessel support ring and an artificial blood vessel support ring system. Background Art

[0002] Vascular diseases, such as aortic aneurysm, aortic dissection, etc., seriously threaten human life and health. According to statistics, the mortality rate after the rupture of aortic aneurysm is as high as over 80%. In the field of treatment of vascular diseases, open surgery is an important treatment method, especially for some complex and severe vascular lesions. However, traditional treatment methods have many limitations, which have promoted the emergence and development of the technology of barbed support ring covered stents. Traditional open surgery for treating vascular diseases usually requires large-area vascular incision and reconstruction, with large surgical trauma, much bleeding, long postoperative recovery time, and patients facing a high risk of complications such as infection and organ function damage. Taking aortic aneurysm surgery as an example, traditional open surgery requires thoracotomy or laparotomy, which has a great impact on the patient's physical function. For some patients with poor physical condition and low tolerance, it is often difficult to bear.

[0003] Traditional open surgery also has the following problems:

[0004] 1. Prone to displacement: Ordinary covered stents mainly rely on their own radial support force to fit with the blood vessel wall to maintain position stability in the blood vessel. However, in actual applications, due to the physiological activities of the blood vessel (such as heart pulsation, respiratory movement, etc.) and the complex influence of hemodynamics, this fixing method is not reliable enough in some cases. Especially in the case of blood vessel bending, high blood flow velocity or abnormal blood vessel wall structure at the lesion site, ordinary covered stents are prone to displacement, resulting in treatment failure or triggering other serious complications. According to clinical studies, the displacement incidence rate of some ordinary covered stents within a certain period after surgery can reach 10% - 15%.

[0005] 2. Poor wall apposition: The existing covered stents have limited fitting degree with the blood vessel wall. Especially when dealing with irregular diseased blood vessels, they cannot completely and tightly fit the blood vessel wall, and gaps are likely to appear. This may not only lead to blood leakage, affecting the treatment effect, but also trigger local thrombosis, increasing the risk of blood vessel blockage. Summary of the Invention

[0006] Aiming at the above-mentioned existing technical deficiencies, the purpose of the present invention is to provide an artificial blood vessel support ring and an artificial blood vessel support ring system to solve the problems in the prior art, such as the need for large-area vascular incision and reconstruction, large surgical trauma, much bleeding, long postoperative recovery time, patients facing a high risk of complications such as infection and organ function damage, as well as poor wall apposition and easy displacement of covered stents.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The present invention provides an artificial blood vessel support ring, which is characterized by comprising:

[0009] A support ring, the main body of which is in a ring-shaped net structure, and a plurality of pull rings are arranged at one end thereof;

[0010] An anchoring shaft, which is detachably arranged on the support ring and close to the pull ring;

[0011] An anchoring thorn, which is rotatably arranged on the anchoring shaft and is used for fixing the support ring on the native blood vessel.

[0012] As a preferred technical solution, a plurality of pull rings are arranged at one end of the support ring, and the function is secondary release (that is, when the placement position of the support ring is inappropriate, the support ring is operated through the pull ring, and the support ring is recovered into the compression catheter, so as to facilitate readjusting the position of the support ring and then releasing the support ring).

[0013] As a preferred technical solution, a groove for the movement of the anchoring thorn is formed on the support ring.

[0014] As a preferred technical solution, the support ring, the anchoring shaft and the anchoring thorn are all made of nitinol alloy or elastic metal / non-metal.

[0015] As a preferred technical solution, the main body of the support ring is a self-expanding stent structure.

[0016] As a preferred technical solution, the main body of the anchoring thorn is in an "L" shape, including a puncturing part and a transmission part, and a shaft hole is arranged at the connection part of the puncturing part and the transmission part.

[0017] As a preferred technical solution, the bottom surface of the transmission part is arranged in an arc shape, and when the balloon is inflated, it pushes the transmission part to rotate, so as to pierce the puncturing part into the native blood vessel, artificial blood vessel or ligature.

[0018] The present invention also provides an artificial blood vessel support ring system, which includes a stent blood vessel, a balloon, a ligature and any one of the foregoing artificial blood vessel support rings.

[0019] As a preferred technical solution, the artificial blood vessel support ring system further includes a compression catheter for binding the support ring.

[0020] The beneficial effects of the present invention are as follows: The support ring of the present invention is made of an elastic material and has an annular mesh structure, with good flexibility, and will not damage the native blood vessel during use; the anchoring spines can firmly anchor to the native blood vessel / artificial blood vessel / ligature, preventing the displacement of the covered stent and having good wall adhesion; during use, the anchoring spines do not scrape against the wall of the compression catheter, will not cause deformation of the anchoring spines and damage to the wall of the compression catheter, are convenient for loading, and will not damage the covered stent; the support ring can seamlessly fit with any diseased blood vessel wall, will not cause any endoleak, and has no complications, especially suitable for the situation where the native blood vessel is too narrow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of the artificial blood vessel support ring provided in Embodiment 1 of the present invention;

[0023] Figure 2 Structural schematic diagram of the artificial blood vessel support ring in the compressed state in Embodiment 1 of the present invention;

[0024] Figure 3 Structural schematic diagram of the artificial blood vessel support ring in the released state in Embodiment 1 of the present invention;

[0025] Figure 4 Structural schematic diagram of the artificial blood vessel support ring provided in Embodiment 2 of the present invention;

[0026] Figure 5 Structural schematic diagram of the artificial blood vessel support ring in the compressed state in Embodiment 2 of the present invention;

[0027] Figure 6 Structural schematic diagram of the artificial blood vessel support ring in the released state in Embodiment 2 of the present invention;

[0028] Figure 7 For Figure 1 、 Figure 4 Enlarged view of part A in

[0029] Figure 8 For Figure 3 、 Figure 6 Enlarged view of part B in

[0030] Figure 9 Structural schematic diagram of the anchoring spines in Embodiment 1 and Embodiment 2 of the present invention;

[0031] Figure 10 and Figure 11 is a schematic structural diagram of the anchoring thorn in other embodiments of the present invention.

[0032] Explanation of reference numerals in the drawings: 1, support ring; 101, pull ring; 102, groove; 2, anchoring shaft; 3, anchoring thorn; 301, puncturing part; 302, transmission part; 303, shaft hole; 3011, anchoring thorn tip; 3012, first reinforcing thorn tip; 3013, second reinforcing thorn tip; 4, stent blood vessel; 5, balloon; 6, tie; 7, compression catheter; 8, native blood vessel. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0034] As shown in Figures 1 - 3 and Figures 7 - 9 , the artificial blood vessel support ring is characterized by including:

[0035] The support ring 1, whose main body is in a ring-shaped mesh structure, and a groove 102 for the movement of the anchoring thorn 3 is provided on the support ring 1;

[0036] The anchoring shaft 2, which is detachably arranged on the support ring 1;

[0037] The anchoring thorn 3, which is rotatably arranged on the anchoring shaft 2 and is used to fix the support ring 1 on the native blood vessel 8, artificial blood vessel or tie 6.

[0038] As a preferred technical solution, the main body of the anchoring thorn 3 is in an "L" shape, including a puncturing part 301 and a transmission part 302, and a shaft hole 303 is provided at the connection between the puncturing part 301 and the transmission part 302.

[0039] Specifically, the puncturing part 301 includes an anchoring thorn shaft and an anchoring thorn tip 3011 fixed on the anchoring thorn shaft.

[0040] As a preferred technical solution, the bottom surface of the transmission part 302 is arc-shaped, and when the balloon 5 is inflated, it pushes the transmission part 302 to rotate, so as to pierce the puncturing part 301 into the native blood vessel 8, artificial blood vessel or tie 6.

[0041] During use, according to actual requirements, the support ring 1, the anchoring shaft 2, the anchoring spines 3, and the balloon 5 are successively installed and compressed into the compression catheter 7 at the designed positions. The specific compression process is as follows: First, the anchoring spines 3 are fixed on the support ring 1 with the anchoring shaft 2. The anchoring spines 3 can rotate around the anchoring shaft 2. Then, they are received together at the predetermined position in the compression catheter 7. Next, the balloon 5 with the protective sleeve and the fixing tube is inserted into the designated position inside the compressed support ring 1, and the protective sleeve of the balloon 5 is withdrawn to ensure that the anchoring spines 3 will not scrape against the wall of the compression catheter 7, thus affecting the installation and removal of the support ring 1. Among them, the support ring 1 and the balloon 5 are both connected to the control handle through operating accessories such as fixing heads and connecting tubes, and their release functions are realized by operating the control handle.

[0042] The specific release process is as follows: Insert the stent blood vessel 4, then send the compressed support ring 1 to the lesion site. Operate the handle to withdraw the compression catheter 7 so that the support ring 1 is completely free from pressure. Use the balloon pressure pump to inflate the balloon 5. Driven by the balloon 5, the anchoring spines 3 rotate around the anchoring shaft 2 to be fixed perpendicular to the axis of the support ring 1. Continue to inflate the balloon 5 until the balloon pressure pump reaches the preset pressure. At this time, the anchoring spines 3 completely penetrate into the internal part of the native blood vessel 8. Release the pressure of the balloon pressure pump. After the pressure release is completed, operate the handle to withdraw the compression catheter 7 and all the rest to complete the release operation of the blood vessel support ring 1. Finally, fix the tie strap 6 on the outer surface of the native blood vessel 8 at the position of the anchoring spines 3. Embodiment 2

[0043] As Figures 4 - 9 shown, the artificial blood vessel support ring is characterized by including:

[0044] The support ring 1, its main body is in a ring-shaped mesh structure, and several pull rings 101 are arranged at one end thereof. A groove 102 for the movement of the anchoring spines 3 is formed on the support ring 1.

[0045] The anchoring shaft 2, the anchoring shaft 2 is detachably arranged on the support ring 1 and is close to the pull ring 101;

[0046] The anchoring spines 3, the anchoring spines 3 are rotatably arranged on the anchoring shaft 2 and are used to fix the support ring 1 on the native blood vessel 8.

[0047] As a preferred technical solution, the main body of the anchoring spines 3 is in an "L" shape, including a puncturing part 301 and a transmission part 302. A shaft hole 303 is arranged at the connection between the puncturing part 301 and the transmission part 302.

[0048] Specifically, the puncturing part 301 includes an anchoring spine shaft and an anchoring spine tip 3011 fixed on the anchoring spine shaft.

[0049] As a preferred technical solution, the bottom surface of the transmission part 302 is arc-shaped. When the balloon 5 is filled, it pushes the transmission part 302 to rotate, so as to pierce the native blood vessel 8, artificial blood vessel or tie 6 with the puncture part 301.

[0050] During use, according to actual requirements, the support ring 1, the anchoring shaft 2, the anchoring thorn 3, and the balloon 5 are sequentially installed and compressed into the compression catheter 7 at the designed positions. The specific compression process is as follows: First, the anchoring thorn 3 is fixed on the support ring 1 with the anchoring shaft 2. The anchoring thorn 3 can rotate around the anchoring shaft 2. Then, they are together received at the pre-specified position of the compression catheter 7. Next, the balloon 5 with the protective sleeve and the fixing tube is introduced into the specified position inside the compressed support ring 1, and the protective sleeve of the balloon 5 is withdrawn to ensure that the anchoring thorn 3 will not scrape against the wall of the compression catheter 7, thus affecting the installation and disassembly of the support ring 1. Among them, the support ring 1 and the balloon 5 are both connected to the control handle through operation accessories such as fixed heads and connecting tubes, and their release functions are realized by operating the control handle; when the placement position of the support ring 1 is inappropriate, the support ring 1 is operated through the pull ring 101 to recover the support ring 1 into the compression catheter 7, facilitating the re-adjustment of the position of the support ring 1 and the secondary release of the support ring 1;

[0051] The specific release process is as follows: The stent blood vessel 4 is placed, and then the compressed support ring 1 is sent to the lesion site. The operation handle retracts the compression catheter 7 so that the support ring 1 is completely free from pressure. The balloon 5 is filled with a balloon pressure pump. Driven by the balloon 5, the anchoring thorn 3 rotates around the anchoring shaft 2 to be fixed perpendicular to the axis of the support ring 1. The balloon 5 is continuously filled until the balloon pressure pump reaches the preset pressure. At this time, the anchoring thorn 3 completely pierces into the native blood vessel 8. The balloon pressure pump is depressurized. After the depressurization is completed, the operation handle withdraws the compression catheter 7 and all the rest to complete the release operation of the blood vessel support ring 1. Finally, the tie 6 is fixed on the outer surface of the native blood vessel 8 at the anchoring thorn 3. Embodiment III

[0052] As Figures 2 - 3 shown, the artificial blood vessel support ring system includes a stent blood vessel 4, a balloon 5, a tie 6, and an artificial blood vessel support ring as described in Embodiment 1.

[0053] As a preferred technical solution, the artificial blood vessel support ring system further includes a compression catheter 7 for restraining the support ring 1.

[0054] During use, according to actual requirements, the support ring 1, the anchoring shaft 2, the anchoring spines 3, and the balloon 5 are successively installed and compressed into the compression catheter 7 at the designed positions. The specific compression process is as follows: First, the anchoring spines 3 are fixed on the support ring 1 by the anchoring shaft 2. The anchoring spines 3 can rotate around the anchoring shaft 2. Then, they are received together at the pre-specified position in the compression catheter 7. Next, the balloon 5 with the protective sleeve and the fixing tube is inserted into the specified position inside the compressed support ring 1, and the protective sleeve of the balloon 5 is withdrawn to ensure that the anchoring spines 3 do not scrape against the wall of the compression catheter 7, thus affecting the installation and removal of the support ring 1. Among them, both the support ring 1 and the balloon 5 are connected to the control handle through operating accessories such as fixed heads and connecting tubes, and their release functions are realized by operating the control handle.

[0055] The specific release process is as follows: The stent blood vessel 4 is inserted. Then, the compressed support ring 1 is sent to the lesion site. The operation handle retracts the compression catheter 7 so that the support ring 1 is completely released from the pressure. The balloon 5 is inflated using a balloon pressure pump. Driven by the balloon 5, the anchoring spines 3 rotate around the anchoring shaft 2 to be fixed perpendicular to the axis of the support ring 1. The balloon 5 continues to be inflated until the balloon pressure pump reaches the preset pressure. At this time, the anchoring spines 3 completely penetrate into the internal part of the native blood vessel 8. The balloon pressure pump is depressurized. After the depressurization is completed, the operation handle withdraws the compression catheter 7 and all the rest to complete the release operation of the blood vessel support ring 1. Finally, the tie strap 6 is fixed on the outer surface of the native blood vessel 8 at the position of the anchoring spines 3. Embodiment 4

[0056] As Figures 5 - 6 shown, the artificial blood vessel support ring system includes a stent blood vessel 4, a balloon 5, a tie strap 6, and an artificial blood vessel support ring as described in Embodiment 2.

[0057] As a preferred technical solution, the artificial blood vessel support ring system further includes a compression catheter 7 for confining the support ring 1.

[0058] During use, according to actual requirements, the support ring 1, the anchoring shaft 2, the anchoring spines 3, and the balloon 5 are successively installed and compressed into the compression catheter 7 at the designed positions. The specific compression process is as follows: First, the anchoring spines 3 are fixed on the support ring 1 by the anchoring shaft 2. The anchoring spines 3 can rotate around the anchoring shaft 2. Then, they are received together at the pre-specified position in the compression catheter 7. Next, the balloon 5 with the protective sleeve and the fixing tube is inserted into the specified position inside the compressed support ring 1, and the protective sleeve of the balloon 5 is withdrawn to ensure that the anchoring spines 3 do not scrape against the wall of the compression catheter 7, thus affecting the installation and removal of the support ring 1. Among them, both the support ring 1 and the balloon 5 are connected to the control handle through operating accessories such as fixed heads and connecting tubes, and their release functions are realized by operating the control handle; when the placement position of the support ring 1 is inappropriate, the support ring 1 is operated through the pull ring 101, and the support ring 1 is retrieved into the compression catheter 7 to facilitate re-adjusting the position of the support ring 1 and releasing the support ring 1 for the second time.

[0059] The specific release process is as follows: Place the stent blood vessel 4, then send the support ring 1 in the compressed state to the lesion location. The operating handle retracts the compression catheter 7 so that the support ring 1 is completely free from suppression. Use the balloon pressure pump to inflate the balloon 5. Driven by the balloon 5, the anchoring thorn 3 rotates around the anchoring shaft 2 to be fixed perpendicular to the axis of the support ring 1. Continue to inflate the balloon 5 until the balloon pressure pump reaches the preset pressure. At this time, the anchoring thorn 3 completely penetrates into the internal part of the native blood vessel 8. Release the pressure of the balloon pressure pump. After the pressure release is completed, the operating handle withdraws the compression catheter 7 and all the like to complete the release operation of the blood vessel support ring 1. Finally, fix the tie strap 6 on the outer surface of the native blood vessel 8 at the position of the anchoring thorn 3.

[0060] In other preferred embodiments, the support ring 1, the anchoring shaft 2, and the anchoring thorn 3 can be made of nitinol alloy or elastic metal / non-metal materials.

[0061] In other preferred embodiments, the body of the support ring 1 can be designed as a self-expanding stent structure.

[0062] As Figure 10 and Figure 11 shown, in other embodiments, in order to further enhance the anchoring effect between the support ring 1 and the native blood vessel 8 / artificial blood vessel / tie strap 6, two types of enhanced thorn tips are added to the anchoring thorn 3. The specific settings are as follows:

[0063] 1. Add the first enhanced thorn tip 3012 to the anchoring thorn 3. The first enhanced thorn tip 3012 is axially distributed on the anchoring thorn shaft and forms an acute angle with the anchoring thorn shaft. There are two circles of the first enhanced thorn tip 3012 axially arranged on the anchoring thorn shaft.

[0064] 2. Add the second enhanced thorn tip 3013 to the anchoring thorn 3. The second enhanced thorn tip 3013 is circumferentially arranged at the bottom of the anchoring thorn tip 3011 and forms a dovetail structure with the anchoring thorn tip 3011.

[0065] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. An artificial blood vessel support ring, characterized in that: include: A support ring (1), the main body of which is an annular mesh structure; An anchoring shaft (2), the anchoring shaft (2) being detachably arranged on the supporting ring (1); An anchoring thorn (3), wherein the anchoring thorn (3) is rotatably arranged on the anchoring shaft (2).

2. The artificial blood vessel support ring according to claim 1, characterized in that: One end of the support ring (1) is provided with a plurality of pull rings (101).

3. The artificial blood vessel support ring according to claim 1, characterized in that: The support ring (1) is provided with a groove (102) for the anchoring thorn (3) to move.

4. The artificial blood vessel support ring according to claim 1, characterized in that: The support ring (1), the anchoring shaft (2) and the anchoring thorn (3) are all made of metal / non-metal with elasticity.

5. The artificial blood vessel support ring according to claim 1, characterized in that: The support ring (1) body is a self-expanding stent structure.

6. The artificial blood vessel support ring according to claim 1, characterized in that: The anchoring thorn (3) has an "L"-shaped body, comprising a puncture portion (301) and a transmission portion (302), and an axial hole (303) is provided at the connection between the puncture portion (301) and the transmission portion (302).

7. The artificial blood vessel support ring according to claim 6, characterized in that: The puncture portion (301) comprises an anchoring puncture shaft and an anchoring puncture tip (3011) fixed on the anchoring puncture shaft.

8. The artificial blood vessel support ring according to claim 6, characterized in that: The bottom surface of the transmission part (302) is arranged in an arc shape.

9. An artificial blood vessel support ring system, characterized in that: It comprises a stent blood vessel (4), a balloon (5), a tie (6) and the artificial blood vessel support ring according to any one of claims 1 to 8.

10. The artificial blood vessel support ring system according to claim 9, characterized in that: The anchoring thorn (3) has an "L"-shaped body, comprising a puncture portion (301) and a transmission portion (302). An axial hole (303) is provided at the connection between the puncture portion (301) and the transmission portion (302). When the balloon (5) is filled, it pushes against the transmission portion (302) to rotate, so that the puncture portion (301) is inserted into the native blood vessel (8).

11. The artificial blood vessel support ring system according to claim 9, characterized in that: It also comprises a compression catheter (7) for restraining the support ring (1).

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