Artificial blood vessel supporting ring and artificial blood vessel supporting ring system

Abstract

The invention discloses an artificial blood vessel supporting ring and an artificial blood vessel supporting ring system.The artificial blood vessel supporting ring comprises a supporting ring body, an anchoring shaft and anchoring thorns, and the anchoring thorns are rotationally arranged on the anchoring shaft; the artificial blood vessel supporting ring system comprises a stent blood vessel, a balloon, a ribbon and any artificial blood vessel supporting ring. The supporting ring is made of an elastic material and is of an annular net-shaped structure, good flexibility is achieved, and native blood vessels cannot be damaged when the supporting ring is used; the anchoring thorns can be firmly anchored with the original blood vessels / artificial blood vessels / ribbons, so that the covered stent is prevented from displacement, and the covered stent has better adherence; the anchoring thorns are not scraped with the wall of the compression catheter, so that the anchoring thorns are not deformed, the wall of the compression catheter is not damaged, and loading is convenient; the supporting ring can be seamlessly attached to the blood vessel wall with any lesion, internal leakage is avoided, complications are avoided, and the supporting ring is particularly suitable for the situation that the original blood vessel is too narrow.

Description

Technical Field

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

[0002] Vascular diseases, such as aortic aneurysm and aortic dissection, pose a serious threat to human life and health. According to statistics, the mortality rate after aortic aneurysm rupture is as high as over 80%. In the field of vascular disease treatment, open surgery is an important treatment method, especially for some complex and severe vascular lesions. However, traditional treatment methods have many limitations, which has prompted the emergence and development of covered stent technology with barbed support rings. Traditional open surgery for the treatment of vascular diseases usually requires large-scale vascular incision and reconstruction, which causes large surgical trauma, heavy bleeding, and long postoperative recovery time. Patients face a higher risk of complications such as infection and organ damage. Taking aortic aneurysm surgery as an example, traditional open surgery requires thoracotomy or laparotomy, which has a huge 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 is also accompanied by the following problems: 1. Prone to displacement: Ordinary covered stents rely mainly on their own radial support force to fit the blood vessel wall to maintain a stable position in the blood vessel. However, in actual applications, due to the physiological activities of blood vessels (such as heart beats, respiratory movements, etc.) and the complex influence of hemodynamics, this fixation method is not reliable in some cases. Especially in cases where the blood vessels are curved, the blood flow velocity is fast, or the blood vessel wall structure is abnormal in the lesion site, ordinary covered stents are prone to displacement, resulting in treatment failure or other serious complications. According to clinical studies, the displacement rate of some ordinary covered stents within a certain period of time after surgery can reach 10%-15%.

[0004] 2. Poor adhesion to the wall: The existing stent grafts have limited adhesion to the blood vessel wall, especially when treating irregular diseased blood vessels, they cannot completely and tightly adhere to the blood vessel wall and are prone to gaps. This may not only cause blood leakage and affect the treatment effect, but may also cause local thrombosis and increase the risk of blood vessel blockage. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide an artificial vascular support ring and an artificial vascular support ring system to solve the problems existing in the prior art, such as the need for large-area vascular incision and reconstruction, large surgical trauma, excessive bleeding, long postoperative recovery time, a higher risk of complications such as infection and organ damage faced by patients, and poor wall adhesion and easy displacement of the coated stent.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides an artificial blood vessel support ring, characterized in that it comprises: The support ring has a main body in the form of an annular mesh structure, and one end of the support ring is provided with a plurality of pull rings; An anchoring shaft, the anchoring shaft is detachably arranged on the supporting ring and close to the pull ring; Anchoring thorns are rotatably arranged on the anchoring shaft and are used to fix the support ring on the native blood vessel.

[0007] As a preferred technical solution, a plurality of pull rings are provided at one end of the support ring for secondary release (that is, when the support ring is not placed in an appropriate position, the support ring is operated by the pull ring to retract the support ring into the compression catheter, so as to facilitate readjustment of the position of the support ring and then release the support ring).

[0008] As a preferred technical solution, a groove is provided on the support ring for the anchoring thorn to move.

[0009] As a preferred technical solution, the support ring, anchoring shaft, and anchoring spikes are all made of nickel-titanium alloy or elastic metal / non-metal.

[0010] As a preferred technical solution, the support ring body is a self-expanding stent structure.

[0011] As a preferred technical solution, the anchoring thorn body is "L"-shaped, including a puncture part and a transmission part, and an axial hole is provided at the connection between the puncture part and the transmission part.

[0012] As a preferred technical solution, the bottom surface of the transmission part is arranged in an arc shape, and when the balloon is filled, it pushes the transmission part to rotate, so as to pierce the puncture part into the native blood vessel, the artificial blood vessel or the cable tie.

[0013] The present invention also provides an artificial blood vessel support ring system, comprising a stent blood vessel, a balloon, a cable tie and any one of the above-mentioned artificial blood vessel support rings.

[0014] As a preferred technical solution, the artificial blood vessel support ring system further includes a compression catheter for constraining the support ring.

[0015] The beneficial effects of the present invention are as follows: the support ring of the present invention is made of elastic material into an annular mesh structure, has good flexibility, and will not damage the native blood vessels when used; the anchoring thorns can be firmly anchored with the native blood vessels / artificial blood vessels / cable ties to avoid displacement of the coated stent, and has good wall adhesion; when in use, the anchoring thorns do not scrape the wall of the compression catheter, will not cause deformation of the anchoring thorns and damage to the wall of the compression catheter, is convenient for loading, and will not cause damage to the coated stent; the support ring can seamlessly fit with any diseased blood vessel wall, will not produce any internal leakage, and has no complications, and is particularly suitable for situations where the native blood vessels are too narrow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of an artificial blood vessel support ring provided in Example 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the artificial blood vessel support ring in Example 1 of the present invention in a compressed state; Figure 3 This is a schematic structural diagram of the artificial blood vessel support ring in the released state in Example 1 of the present invention; Figure 4 A schematic diagram of the structure of an artificial blood vessel support ring provided in Example 2 of the present invention; Figure 5 This is a schematic diagram of the structure of the artificial blood vessel support ring in a compressed state in Example 2 of the present invention; Figure 6 This is a schematic diagram of the structure of the artificial blood vessel support ring in the released state in Example 2 of the present invention; Figure 7 for Figure 1 , Figure 4 Enlarged view of part A in the middle; Figure 8 for Figure 3 , Figure 6 Enlarged view of middle part B; Fig. 9 It is a schematic diagram of the structure of the anchoring thorn in Example 1 and Example 2 of the present invention; Fig.10 , Fig.11 It is a schematic diagram of the structure of the anchoring thorn in other embodiments of the present invention.

[0018] Explanation of the reference numerals: 1. Support ring; 101. Pull ring; 102. Groove; 2. Anchoring shaft; 3. Anchoring thorn; 301. Puncture part; 302. Transmission part; 303. Shaft hole; 3011. Anchoring thorn tip; 3012. Reinforced thorn tip one; 3013. Reinforced thorn tip two; 4. Stent vessel; 5. Balloon; 6. Cable tie; 7. Compression catheter; 8. Native blood vessel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0020] like Figure 1-Figure 3 and Figure 7-Figure 9 As shown, the artificial blood vessel support ring is characterized by comprising: The support ring 1 has a main body in an annular mesh structure, and a groove 102 is provided on the support ring 1 for the anchoring thorn 3 to move; An anchoring shaft 2, the anchoring shaft 2 is detachably arranged on the supporting ring 1; The anchoring thorn 3 is rotatably arranged on the anchoring shaft 2 and is used to fix the support ring 1 on the native blood vessel 8, the artificial blood vessel or the cable tie 6.

[0021] As a preferred technical solution, the anchoring thorn 3 has an “L”-shaped body, including 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 .

[0022] Specifically, the puncture part 301 includes an anchoring thorn shaft and an anchoring thorn tip 3011 fixed on the anchoring thorn shaft.

[0023] As a preferred technical solution, the bottom surface of the transmission part 302 is arranged in an arc shape, and when the balloon 5 is filled, it pushes the transmission part 302 to rotate, so as to pierce the puncture part 301 into the native blood vessel 8, the artificial blood vessel or the cable tie 6.

[0024] When in use, according to actual needs, the support ring 1, anchoring shaft 2, anchoring thorn 3, and balloon 5 are installed in the designed position in sequence and compressed into the compression catheter 7. The specific compression process is: first, the anchoring thorn 3 is fixed to the support ring 1 with the anchoring shaft 2, and the anchoring thorn 3 can rotate around the anchoring shaft 2, and then it is received together to the pre-specified position of the compression catheter 7, and then the balloon 5 with the protective cover and the fixing tube is passed into the specified position in the compressed support ring 1 and the protective cover of the balloon 5 is pulled out to ensure that the anchoring thorn 3 will not scratch the wall of the compression catheter 7, thereby affecting the assembly and disassembly of the support ring 1. Among them, the support ring 1 and the balloon 5 are connected to the control handle through the fixed head, the connecting tube and other operating accessories, and the release function is realized by operating the control handle.

[0025] The specific release process is: insert the stent blood vessel 4, then send the compressed support ring 1 into the lesion position, use the operating handle to withdraw the compression catheter 7 so that the support ring 1 is completely free from compression, use the balloon pressure pump to fill the balloon 5, and under the drive of the balloon 5, the anchoring thorn 3 rotates around the anchoring axis 2 to be fixed vertically to the axial direction of the support ring 1, and continue to fill the balloon 5 until the balloon pressure pump reaches the preset pressure. At this time, the anchoring thorn 3 completely penetrates into the native blood vessel 8, and the balloon pressure pump is depressurized. After the depressurization is completed, the operating handle withdraws all the compression catheters 7 to complete the release operation of the vascular support ring 1, and finally fixes the tie 6 on the outer surface of the native blood vessel 8 at the anchoring thorn 3. Embodiment 2

[0026] like Figure 4-Figure 9 As shown, the artificial blood vessel support ring is characterized by comprising: The support ring 1 has a main body in an annular mesh structure, one end of which is provided with a plurality of pull rings 101, and the support ring 1 is provided with a groove 102 for the anchoring thorn 3 to move; An anchoring shaft 2, the anchoring shaft 2 is detachably arranged on the support ring 1 and close to the pull ring 101; Anchoring spikes 3 are rotatably disposed on the anchoring shaft 2 and are used to fix the support ring 1 on the native blood vessel 8 .

[0027] As a preferred technical solution, the anchoring thorn 3 has an “L”-shaped body, including 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 .

[0028] Specifically, the puncture part 301 includes an anchoring thorn shaft and an anchoring thorn tip 3011 fixed on the anchoring thorn shaft.

[0029] As a preferred technical solution, the bottom surface of the transmission part 302 is arranged in an arc shape, and when the balloon 5 is filled, it pushes the transmission part 302 to rotate, so as to pierce the puncture part 301 into the native blood vessel 8, the artificial blood vessel or the cable tie 6.

[0030] When in use, according to actual needs, the support ring 1, anchoring shaft 2, anchoring thorn 3, and balloon 5 are installed in the designed position in turn and compressed into the compression catheter 7. The specific compression process is: first fix the anchoring thorn 3 on the support ring 1 with the anchoring shaft 2, and the anchoring thorn 3 can rotate around the anchoring shaft 2, and then collect them together to the pre-specified position of the compression catheter 7, and then pass the balloon 5 with the protective cover and the fixing tube into the specified position in the compressed support ring 1 and pull out the protective cover of the balloon 5 to ensure that the anchoring thorn 3 will not scratch the wall of the compression catheter 7, thereby affecting the assembly and disassembly of the support ring 1. Among them, the support ring 1 and the balloon 5 are connected to the control handle through the operating accessories such as the fixing head and the connecting tube, and the release function is realized by operating the control handle; when the support ring 1 is not placed in an appropriate position, the support ring 1 is operated by the pull ring 101 to recycle the support ring 1 into the compression catheter 7, so as to readjust the position of the support ring 1 and release the support ring 1 for the second time; The specific release process is: insert the stent blood vessel 4, then send the compressed support ring 1 into the lesion position, use the operating handle to withdraw the compression catheter 7 so that the support ring 1 is completely free from compression, use the balloon pressure pump to fill the balloon 5, and under the drive of the balloon 5, the anchoring thorn 3 rotates around the anchoring axis 2 to be fixed vertically to the axial direction of the support ring 1, and continue to fill the balloon 5 until the balloon pressure pump reaches the preset pressure. At this time, the anchoring thorn 3 completely penetrates into the native blood vessel 8, and the balloon pressure pump is depressurized. After the depressurization is completed, the operating handle withdraws all the compression catheters 7 to complete the release operation of the vascular support ring 1, and finally fixes the tie 6 on the outer surface of the native blood vessel 8 at the anchoring thorn 3. Embodiment 3

[0031] like Figure 2-Figure 3 As 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 described in Example 1.

[0032] As a preferred technical solution, the artificial blood vessel support ring system further includes a compression catheter 7 for constraining the support ring 1 .

[0033] When in use, according to actual needs, the support ring 1, anchoring shaft 2, anchoring thorn 3, and balloon 5 are installed in the designed position in sequence and compressed into the compression catheter 7. The specific compression process is: first, the anchoring thorn 3 is fixed to the support ring 1 with the anchoring shaft 2, and the anchoring thorn 3 can rotate around the anchoring shaft 2, and then it is received together to the pre-specified position of the compression catheter 7, and then the balloon 5 with the protective cover and the fixing tube is passed into the specified position in the compressed support ring 1 and the protective cover of the balloon 5 is pulled out to ensure that the anchoring thorn 3 will not scratch the wall of the compression catheter 7, thereby affecting the assembly and disassembly of the support ring 1. Among them, the support ring 1 and the balloon 5 are connected to the control handle through the fixed head, the connecting tube and other operating accessories, and the release function is realized by operating the control handle.

[0034] The specific release process is: insert the stent blood vessel 4, then send the compressed support ring 1 into the lesion position, use the operating handle to withdraw the compression catheter 7 so that the support ring 1 is completely free from compression, use the balloon pressure pump to fill the balloon 5, and under the drive of the balloon 5, the anchoring thorn 3 rotates around the anchoring axis 2 to be fixed vertically to the axial direction of the support ring 1, and continue to fill the balloon 5 until the balloon pressure pump reaches the preset pressure. At this time, the anchoring thorn 3 completely penetrates into the native blood vessel 8, and the balloon pressure pump is depressurized. After the depressurization is completed, the operating handle withdraws all the compression catheters 7 to complete the release operation of the vascular support ring 1, and finally fixes the tie 6 on the outer surface of the native blood vessel 8 at the anchoring thorn 3. Embodiment 4

[0035] like Figure 5-Figure 6 As 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 described in Example 2.

[0036] As a preferred technical solution, the artificial blood vessel support ring system further includes a compression catheter 7 for constraining the support ring 1 .

[0037] When in use, according to actual needs, the support ring 1, anchoring shaft 2, anchoring thorn 3, and balloon 5 are installed in the designed position in turn and compressed into the compression catheter 7. The specific compression process is: first fix the anchoring thorn 3 on the support ring 1 with the anchoring shaft 2, and the anchoring thorn 3 can rotate around the anchoring shaft 2, and then collect them together to the pre-specified position of the compression catheter 7, and then pass the balloon 5 with the protective cover and the fixing tube into the specified position in the compressed support ring 1 and pull out the protective cover of the balloon 5 to ensure that the anchoring thorn 3 will not scratch the wall of the compression catheter 7, thereby affecting the assembly and disassembly of the support ring 1. Among them, the support ring 1 and the balloon 5 are connected to the control handle through the operating accessories such as the fixing head and the connecting tube, and the release function is realized by operating the control handle; when the support ring 1 is not placed in an appropriate position, the support ring 1 is operated by the pull ring 101 to recycle the support ring 1 into the compression catheter 7, so as to readjust the position of the support ring 1 and release the support ring 1 for the second time; The specific release process is: insert the stent blood vessel 4, then send the compressed support ring 1 into the lesion position, use the operating handle to withdraw the compression catheter 7 so that the support ring 1 is completely free from compression, use the balloon pressure pump to fill the balloon 5, and under the drive of the balloon 5, the anchoring thorn 3 rotates around the anchoring axis 2 to be fixed vertically to the axial direction of the support ring 1, and continue to fill the balloon 5 until the balloon pressure pump reaches the preset pressure. At this time, the anchoring thorn 3 completely penetrates into the native blood vessel 8, and the balloon pressure pump is depressurized. After the depressurization is completed, the operating handle withdraws all the compression catheters 7 to complete the release operation of the vascular support ring 1, and finally fixes the tie 6 on the outer surface of the native blood vessel 8 at the anchoring thorn 3.

[0038] In other preferred embodiments, the support ring 1, the anchoring shaft 2, and the anchoring spike 3 can be made of nickel-titanium alloy or elastic metal / non-metal material.

[0039] In other preferred embodiments, the body of the support ring 1 may be designed as a self-expanding stent structure.

[0040] like Fig.10 and Fig.11 As 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 / cable tie 6, two reinforcing thorn tips are added to the anchoring thorn 3, and the specific settings are as follows: 1. Add a reinforcing spike tip 3012 to the anchoring spike 3. The reinforcing spike tip 3012 is axially distributed on the anchoring spike shaft and forms an acute angle with the anchoring spike shaft. Two circles of reinforcing spike tips 3012 are axially arranged on the anchoring spike shaft.

[0041] 2. Add a second reinforcing spike tip 3013 to the anchoring spike 3. The second reinforcing spike tip 3013 is circumferentially arranged at the bottom of the anchoring spike tip 3011 and forms a dovetail structure with the anchoring spike tip 3011.

[0042] 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 equivalents, the present invention is also intended to include these modifications and variations.

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 nickel-titanium alloy or 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: When the balloon (5) is filled, it pushes against the transmission part (302) to rotate, so as to pierce the puncture part (301) 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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