Valve stent and valve replacement system

Abstract

The utility model discloses a valve stent and a valve replacement system, the valve stent comprises an outer stent, the outer stent comprises an atrial stent and a ventricular stent, and the ventricular stent is connected below the atrial stent; the atrial electrode is arranged on the atrial stent, and the atrial electrode is suitable for ablation of nerves in the atrium when powered on; the ventricular electrode is arranged on the ventricular stent, and the ventricular electrode is suitable for ablation of nerves in the ventricular when powered on. Therefore, due to the arrangement of the central atrial electrode and the ventricular electrode of the valve stent, the atrial nerves of a patient can be ablated through the electrified atrial electrode, and the atrium can be timely and effectively defibrillated. Meanwhile, the ventricular nerves of the patient can be ablated through the electrified ventricular electrode, and ventricular defibrillation can be effectively performed in time, so that the ablation efficiency can be improved, and the life safety of the patient can be effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a valve stent and a valve replacement system. Background Technology

[0002] The human heart consists of four chambers: the upper two are the left and right atria, and the lower two are the left and right ventricles. The left and right atria and ventricles communicate with each other, and the heart also communicates with the outside environment. To ensure unidirectional blood flow, four valves function as one-way valves between the atria and ventricles. The valve between the right atrium and right ventricle is called the tricuspid valve; the valve between the left atrium and left ventricle is called the mitral valve; the valve between the left ventricle and aorta is called the aortic valve; and the valve between the right ventricle and pulmonary artery is called the pulmonary valve.

[0003] As we age, the valve structure degenerates, or other conditions can cause the valves to fail to open and close completely, leading to blood reflux and insufficient blood supply, increasing the burden on the heart, and ultimately causing heart failure. The most common causes are valvular stenosis and valvular insufficiency.

[0004] The traditional treatment for this type of valvular disease is open-heart surgery, which involves surgical repair of the heart valve or replacement with an artificial valve under cardiopulmonary bypass. However, the risks and trauma associated with surgery, as well as the high costs of subsequent rehabilitation, make most patients unwilling to undergo the procedure.

[0005] With the development of minimally invasive surgical techniques, artificial valves can be implanted into patients through a catheter. This method eliminates the need for open-chest surgery, resulting in minimal trauma, rapid recovery, and significant improvement in postoperative hemodynamic parameters. Patients who have undergone heart valve replacement surgery are often prone to atrial fibrillation; if these symptoms are not addressed promptly, they can pose a significant safety risk to the patient's life. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a valve stent with atrial and ventricular electrodes. The atrial electrode, when energized, can ablate the atrial nerves, enabling timely and effective atrial defibrillation. Simultaneously, the ventricular electrode, when energized, can ablate the ventricular nerves, enabling timely and effective ventricular defibrillation. This improves ablation efficiency and effectively protects the patient's life.

[0007] This invention further proposes a valve replacement system.

[0008] A valve stent according to a first aspect of the present invention includes: an external stent, the external stent including: an atrial stent and a ventricular stent, the ventricular stent being connected below the atrial stent; an atrial electrode disposed on the atrial stent, the atrial electrode being adapted to ablate nerves in the atrium when energized; and a ventricular electrode disposed on the ventricular stent, the ventricular electrode being adapted to ablate nerves in the ventricle when energized.

[0009] Therefore, the placement of atrial and ventricular electrodes in this valve stent allows for timely and effective atrial defibrillation via the energized atrial electrode to ablate the atrial nerves. Simultaneously, the energized ventricular electrode can be used to ablate the ventricular nerves, enabling timely and effective ventricular defibrillation. This improves ablation efficiency and effectively safeguards the patient's life.

[0010] According to some embodiments of the present invention, the valve stent further includes: an atrial connector disposed on the atrial stent, and an atrial electrode disposed on the atrial connector; and a ventricular connector disposed on the ventricular stent, and a ventricular electrode disposed on the ventricular connector.

[0011] According to some embodiments of the present invention, the atrial connector is disposed at the end of the atrial stent away from the ventricular stent, and the ventricular connector is disposed at the end of the ventricular stent away from the atrial stent.

[0012] According to some embodiments of this utility model, the atrial stent has a plurality of circumferentially distributed atrial snap-fit ​​connectors at the end away from the ventricular stent, and the atrial connector has a plurality of circumferentially distributed atrial snap-fit ​​grooves. The plurality of atrial snap-fit ​​connectors and the plurality of atrial snap-fit ​​grooves are engaged in a one-to-one engagement. The atrial snap-fit ​​connectors have atrial mobility allowance within the atrial snap-fit ​​grooves. Preferably, the atrial mobility allowance includes a first atrial mobility allowance for the atrial snap-fit ​​connector to move along the length of the atrial snap-fit ​​groove and a second atrial mobility allowance for the atrial snap-fit ​​connector to rotate about its contact position with the atrial snap-fit ​​groove. The ventricular stent has a ventricular mobility margin; and / or the end of the ventricular stent away from the atrial stent is provided with a plurality of circumferentially distributed ventricular locking connectors, the ventricular connector is provided with a plurality of circumferentially distributed ventricular locking slots, the plurality of ventricular locking connectors are engaged with the plurality of ventricular locking slots in a one-to-one correspondence, and the ventricular locking connectors have ventricular mobility margins within the ventricular locking slots; preferably, the ventricular mobility margins include a first ventricular mobility margin for the ventricular locking connector to move along the length direction of the ventricular locking slot and a second ventricular mobility margin for the ventricular locking connector to rotate about its contact position with the ventricular locking slot.

[0013] According to some embodiments of the present invention, the valve stent further includes: an atrial lead, one end of which is disposed in the atrial connector, and an atrial electrode is disposed in the atrial connector through one end of the atrial lead and electrically connected to one end of the atrial lead; and a ventricular lead, one end of which is disposed in the ventricular connector, and a ventricular electrode is disposed in the ventricular connector through one end of the ventricular lead and electrically connected to one end of the ventricular lead.

[0014] According to some embodiments of the present invention, the atrial connector includes: an atrial connector head disposed on the atrial stent, the atrial connector head forming an atrial through hole; a plurality of atrial clamping members disposed within the atrial through hole and distributed circumferentially thereon, one end of each atrial clamping member being rotatably disposed on the atrial connector head, the other ends of each atrial clamping member being close to each other and forming an atrial perforation, the atrial lead passing through the atrial perforation; and a plurality of atrial elastic members disposed on the wall of the atrial through hole and corresponding one-to-one with the plurality of atrial clamping members, to provide the atrial clamping members with a means to hold the atrial lead. The elastic force of the wire; and / or the ventricular connector includes: a ventricular connector head disposed on the ventricular stent, the ventricular connector head forming a ventricular through hole; a plurality of ventricular clamping members disposed within the ventricular through hole and distributed circumferentially in the ventricular through hole, one end of each of the plurality of ventricular clamping members being rotatably disposed on the ventricular connector, the other ends of the plurality of ventricular clamping members being close to each other and together forming a ventricular perforation, the ventricular lead passing through the ventricular perforation; a plurality of ventricular elastic members disposed on the wall of the ventricular through hole and corresponding one-to-one with the plurality of ventricular clamping members, to provide the ventricular clamping members with elastic force to hold the ventricular lead.

[0015] According to some embodiments of the present invention, one end of the atrial lead is inserted through the atrial connector, and one end of the atrial lead is press-fitted or threaded with the atrial connector; and / or one end of the ventricular lead is inserted through the ventricular connector, and one end of the ventricular lead is press-fitted or threaded with the ventricular connector.

[0016] According to some embodiments of the present invention, the atrial electrode is one and disposed at one end of the atrial lead, and the ventricular electrode is one and disposed at one end of the ventricular lead; or the atrial electrode is multiple and the multiple atrial electrodes are spaced apart, and the ventricular electrode is multiple and the multiple ventricular electrodes are spaced apart.

[0017] According to some embodiments of the present invention, the valve stent further includes: an inner stent connected to and located within the atrial stent, the inner stent forming a channel; a plurality of leaflets disposed in the inner stent and selectively opening and closing the channel; wherein, the atrial lead extends into the atrial stent and then bends to extend to the atrial connector, and the ventricular lead extends into the atrial stent, then bends to pass through the channel and the ventricular stent before extending to the ventricular connector; preferably, the ventricular lead is located at the center of the channel, and when the plurality of leaflets are closed, the plurality of leaflets... The leaflets are respectively sealed to the ventricular leads; preferably, the leaflets have an arc-shaped clearance notch at the tip of the ventricular lead, and the plurality of clearance notches are formed to fit the shape of the ventricular lead so that the plurality of leaflets are sealed to the ventricular lead; preferably, the leaflets have a sealing portion that is bent relative to the tip of the ventricular lead, the sealing portion is attached to the outer peripheral wall of the ventricular lead, and the plurality of sealing portions can be formed to fit the shape of the ventricular lead so that the plurality of leaflets are sealed to the ventricular lead; preferably, the leaflets are horseshoe-shaped.

[0018] A valve replacement system according to a second aspect of the present invention includes: the valve stent described above; and a pulse generator, wherein the pulse generator is electrically connected to the atrial electrode and the ventricular electrode respectively.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the valve stent structure according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of a structure in which an atrial stent is provided at the top with an atrial connector according to an embodiment of the present utility model;

[0023] Figure 3 This is a top view of the atrial stent according to an embodiment of the present invention;

[0024] Figure 4 yes Figure 1 A magnified view of region A in the middle;

[0025] Figure 5 This is a structural schematic diagram of the atrial connector according to an embodiment of the present utility model;

[0026] Figure 6 This is a schematic diagram of the internal support containing leaflets according to an embodiment of the present invention;

[0027] Figure 7 This is a structural schematic diagram of the ventricular connector according to an embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the ventricular connector with a ventricular snap-fit ​​groove according to an embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of a ventricular perforation structure formed by multiple ventricular snap-fit ​​components according to an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure in which the outer bracket and the inner bracket are connected by rivets according to an embodiment of the present utility model.

[0031] Figure label:

[0032] 100. Valve stents;

[0033] 10. External stent; 11. Atrial stent; 111. Atrial clasp connector;

[0034] 12. Ventricular stent;

[0035] 20. Atrial connector; 21. Atrial snap-fit ​​slot; 22. Atrial connector head; 221. Atrial through hole; 23. Atrial snap-fit ​​component; 24. Atrial elastic component; 25. Atrial perforation;

[0036] 30. Ventricular connector; 31. Ventricular snap-fit ​​slot; 32. Ventricular connector head; 321. Ventricular through hole; 33. Ventricular snap-fit ​​component; 34. Ventricular perforation; 35. Ventricular elastic component;

[0037] 40. Atrial lead; 41. Atrial electrode;

[0038] 50. Ventricular lead; 51. Ventricular electrode;

[0039] 60. Internal support;

[0040] 70. Leaf petal; 71. Rivet; 72. Outer skirt hem; 73. Inner skirt hem. Detailed Implementation

[0041] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0042] The following is for reference. Figures 1-10 Description of a valve stent 100 according to an embodiment of the present invention.

[0043] like Figure 1 As shown, the valve stent 100 according to the first aspect of the present invention includes: an external stent 10, an atrial electrode 41 and a ventricular electrode 51. The external stent 10 includes: an atrial stent 11 and a ventricular stent 12. The ventricular stent 12 is connected below the atrial stent 11. The atrial electrode 41 is disposed on the atrial stent 11 and is adapted to ablate nerves in the atrium when energized. The ventricular electrode 51 is disposed on the ventricular stent 12 and is adapted to ablate nerves in the ventricle when energized.

[0044] Specifically, the external stent 10 is mainly composed of an atrial stent 11 and a ventricular stent 12. The atrial stent 11 is placed inside the atrium and fits against the inner wall of the atrium, which can support the atrium. This can further ensure that the valve passage portion of the internal stent 60 is fixed and prevent the heart from tipping over or shifting during heartbeat.

[0045] Similarly, the ventricular stent 12 is placed inside the ventricle. The ventricular stent 12 fits against the inner wall of the ventricle and can support the ventricle, thereby ensuring that the size and shape of the ventricle remain unchanged.

[0046] Furthermore, since the ventricle is located below the atrium in the human body, the ventricular stent 12 is connected to the lower part of the atrial stent 11, which can adapt to the position of the atrium and ventricle in the human body.

[0047] Furthermore, the atrial electrode 41 is positioned within the atrial stent 11, which provides support for the atrial electrode 41, thus making it more stable and reducing the risk of displacement due to heartbeat or other factors. Moreover, positioning the atrial electrode 41 within the atrial stent 11 allows for timely and effective atrial defibrillation by ablating the atrial nerves through the electrically energized atrial electrode 41. Furthermore, ablation of the atrial nerves via the atrial electrode 41 concentrates energy at specific locations within the atrial nerves, thereby improving ablation efficiency and ensuring patient safety.

[0048] Similarly, the ventricular electrode 51 is positioned on the ventricular stent 12, which provides support for the electrode, making it more stable and reducing the risk of displacement due to heartbeat or other factors. Furthermore, positioning the ventricular electrode 51 on the ventricular stent 12 allows for timely and effective defibrillation of the ventricular nerves through energized ablation. Moreover, ablation of the ventricular nerves using the electrode 51 concentrates energy at specific locations within the nerves, thus improving ablation efficiency.

[0049] Therefore, the placement of the atrial electrode 41 and ventricular electrode 51 in the valve stent 100 allows for timely and effective atrial defibrillation by ablating the atrial nerve through the energized atrial electrode 41 and by timely and effective ventricular defibrillation through the energized ventricular electrode 51. This improves ablation efficiency and effectively protects the patient's life.

[0050] According to some embodiments of this utility model, such as Figure 1 As shown, the valve stent 100 also includes an atrial connector 20 and a ventricular connector 30. The atrial connector 20 is disposed on the atrial stent 11, the atrial electrode 41 is disposed on the atrial connector 20, the ventricular connector 30 is disposed on the ventricular stent 12, and the ventricular electrode 51 is disposed on the ventricular connector 30.

[0051] The atrial stent 11 provides support for the atrial connector 20. The atrial electrode 41 is placed in the atrial connector 20. The atrial connector 20 can be used to position and install the atrial electrode 41, and can also be used to accurately locate the nerves in the atrium during interventional surgery. The atrial nerves of the patient can be ablated accurately in the predetermined area by the energized atrial electrode 41.

[0052] Similarly, the ventricular stent 12 can provide support for the ventricular connector 30. The ventricular electrode 51 is placed in the ventricular connector 30. The ventricular connector 30 can be set up to position and install the ventricular electrode 51, and can also accurately locate the ventricular nerve during interventional surgery. The ventricular nerve of the patient can be accurately ablated in the predetermined area by the energized ventricular electrode 51.

[0053] According to some embodiments of this utility model, such as Figure 1 As shown, the atrial connector 20 is located at the end of the atrial stent 11 away from the ventricular stent 12, and the ventricular connector 30 is located at the end of the ventricular stent 12 away from the atrial stent 11.

[0054] Specifically, since the position of the atrial electrode 41 is set according to the shape of the valve stent 100, the atrial electrode 41 is set on the atrial connector 20, which can better prevent the atrial electrode 41 from shifting. The atrial connector 20 is set away from the ventricular stent 12, which can ensure that the atrial electrode 41 acts more accurately on the target area.

[0055] Similarly, since the position of the ventricular electrode 51 is also set according to the shape of the valve stent 100, the ventricular electrode 51 is set on the ventricular connector 30, which can better prevent the ventricular electrode 51 from shifting. The ventricular connector 30 is set away from the atrial stent 11, which can ensure that the ventricular electrode 51 acts more accurately on the target area.

[0056] According to some embodiments of this utility model, such as Figure 1 and Figure 4 As shown, the atrial stent 11 has multiple circumferentially distributed atrial snap-fit ​​connectors 111 at the end away from the ventricular stent 12, and the atrial connector 20 has multiple circumferentially distributed atrial snap-fit ​​grooves 21. The multiple atrial snap-fit ​​connectors 111 and the multiple atrial snap-fit ​​grooves 21 are engaged in a one-to-one correspondence. The atrial snap-fit ​​connectors 111 have atrial mobility margin within the atrial snap-fit ​​grooves 21.

[0057] Specifically, the atrial stent 11 is provided with an atrial snap-fit ​​connector 111, and correspondingly, the atrial connector 20 is provided with an atrial snap-fit ​​groove 21. The atrial snap-fit ​​connector 111 and the atrial snap-fit ​​groove 21 are snap-fitted together. For example, the atrial snap-fit ​​connector 111 can be set as a T-shaped snap-fit ​​protrusion, which can extend into the atrial snap-fit ​​groove 21, thereby realizing the snap-fit ​​connection between the atrial stent 11 and the atrial connector 20.

[0058] Furthermore, multiple atrial cardioid connectors 111 are provided, and correspondingly, multiple atrial cardioid slots 21 are provided. Multiple atrial cardioid connectors 111 and multiple atrial cardioid slots 21 are engaged and cooperated, thereby making the connection between the atrial stent 11 and the atrial connector 20 more stable and secure.

[0059] Furthermore, when ablation of nerves within the atrium is performed using the atrial electrode 41, the atrial clamping connector 111 has atrial mobility margin within the atrial clamping slot 21. This also creates atrial mobility margin between the atrial stent 11 and the atrial connector 20. The atrial electrode 41 is positioned at the end of the atrial connector 20, thus ensuring the relative fixation of the atrial electrode 41's position relative to the atrial wall. The position of the atrial electrode 41 can be adjusted by adjusting the position of the atrial connector 20 within the atrial stent 11 and by adjusting the position of the atrial electrode 41 within the atrial connector 20. Adjusting the position of the atrial connector 20 within the atrial stent 11 can be achieved by adjusting the engagement positions of the multiple atrial clamping connectors 111 and the multiple atrial clamping slots 21. After these two adjustments are completed, the position of the atrial electrode 41 is fixed.

[0060] Furthermore, the atrial card connector 111 has atrial movement margin within the atrial card slot 21. When the heart is active, it can further improve the fit between the atrial stent 11 and the inner wall of the atrium, thereby making the connection between the atrial stent 11 and the atrium more stable.

[0061] Specifically, the atrial mobility margin includes a first atrial mobility margin for the atrial clamp connector 111 to move along the length of the atrial clamp slot 21 and a second atrial mobility margin for the atrial clamp connector 111 to rotate around its contact position with the atrial clamp slot 21. During valve stent 100 implantation surgery, the atrial clamp connector 111 not only moves along the length of the atrial clamp slot 21 but also rotates around its contact position, thereby changing the shape of the atrial stent 11 from a catheter-compatible retractable state to a spherical state adapted to the atrium. During cardiac activity, the atrial clamp connector 111 also moves along the length of the atrial clamp slot 21 and rotates around its contact position, slightly altering the spherical state of the atrial stent 11 to ensure that this spherical state is adapted to the atrium.

[0062] Furthermore, the end of the ventricular stent 12 away from the atrial stent 11 is provided with a plurality of circumferentially distributed ventricular snap-fit ​​connectors, and the ventricular connector 30 is provided with a plurality of circumferentially distributed ventricular snap-fit ​​grooves 31. The plurality of ventricular snap-fit ​​connectors and the plurality of ventricular snap-fit ​​grooves 31 are snapped together in a one-to-one correspondence, and the ventricular snap-fit ​​connectors have ventricular movement margin within the ventricular snap-fit ​​grooves 31.

[0063] Specifically, the ventricular stent 12 is provided with a ventricular snap-fit ​​connector, and correspondingly, the ventricular connector 30 is provided with a ventricular snap-fit ​​groove 31. The ventricular snap-fit ​​connector engages with the ventricular snap-fit ​​groove 31. For example, the ventricular snap-fit ​​connector can be configured as a T-shaped snap-fit ​​protrusion, which can extend into the ventricular snap-fit ​​groove 31, thereby enabling the snap-fit ​​connection between the ventricular stent 12 and the ventricular connector 30.

[0064] Furthermore, multiple ventricular snap-fit ​​connectors are provided, and correspondingly, multiple ventricular snap-fit ​​slots 31 are provided. Multiple ventricular snap-fit ​​connectors engage with multiple ventricular snap-fit ​​slots 31, thereby making the connection between the ventricular stent 12 and the ventricular connector 30 more stable and secure.

[0065] Furthermore, when ablation of nerves within the ventricle is performed using the ventricular electrode 51, the ventricular clamping connectors within the ventricular clamping slots 31 provide ventricular mobility, thus allowing for ventricular mobility between the ventricular stent 12 and the ventricular connector 30. The ventricular electrode 51 is positioned at the end of the ventricular connector 30, ensuring a relatively fixed position of the ventricular electrode 51 relative to the inner wall of the ventricle. The position of the ventricular electrode 51 can be adjusted by adjusting the position of the ventricular connector 30 within the ventricular stent 12 and by adjusting the position of the ventricular electrode 51 within the ventricular connector 30. Adjusting the position of the ventricular connector 30 within the ventricular stent 12 can be achieved by adjusting the engagement positions of the multiple ventricular clamping connectors with the multiple ventricular clamping slots 31. After these two adjustments are completed, the position of the ventricular electrode 51 is fixed.

[0066] Furthermore, the ventricular clasp connector has ventricular movement margin within the ventricular clasp slot 31, which can further improve the fit between the ventricular stent 12 and the ventricular wall when the heart is active, thereby making the connection between the ventricular stent 12 and the ventricle more stable.

[0067] Specifically, the ventricular mobility margin includes a first ventricular mobility margin for the ventricular clamp connector to move along the length of the ventricular clamp slot 31 and a second ventricular mobility margin for the ventricular clamp connector to rotate around its contact position with the ventricular clamp slot 31. During the valve stent 100 implantation procedure, the ventricular clamp connector not only moves along the length of the ventricular clamp slot 31 but also rotates around its contact position, thereby changing the shape of the ventricular stent 11 from a catheter-compatible receptacle state to a spherical state adapted to the ventricle. During cardiac activity, the ventricular clamp connector also moves not only along the length of the ventricular clamp slot 31 but also rotates around its contact position, slightly altering the spherical state of the ventricular stent 11 to ensure that this spherical state is adapted to the ventricle.

[0068] According to some embodiments of this utility model, such as Figure 1 As shown, the valve stent 100 also includes: an atrial lead 40 and a ventricular lead 50. One end of the atrial lead 40 is disposed in the atrial connector 20, and an atrial electrode 41 is disposed in the atrial connector 20 through one end of the atrial lead 40. The atrial electrode 41 is electrically connected to one end of the atrial lead 40. One end of the ventricular lead 50 is disposed in the ventricular connector 30, and a ventricular electrode 51 is disposed in the ventricular connector 30 through one end of the ventricular lead 50. The ventricular electrode 51 is electrically connected to one end of the ventricular lead 50.

[0069] Specifically, one end of the atrial lead 40 is attached to the atrial connector 20, which secures the atrial lead 40 and prevents it from falling out. Furthermore, one end of the atrial lead 40 is electrically connected to the atrial electrode 41, so that energizing one end of the atrial lead 40 provides power to the atrial electrode 41.

[0070] Furthermore, one end of the ventricular lead 50 is attached to the ventricular connector 30, which secures the ventricular lead 50 and prevents it from falling out. Also, one end of the ventricular lead 50 is electrically connected to the ventricular electrode 51, so that when one end of the ventricular lead 50 is energized, it can provide power to the ventricular electrode 51.

[0071] According to some embodiments of this utility model, such as Figure 5As shown, the atrial connector 20 includes: an atrial connector 22, multiple atrial clamping members 23, and multiple atrial elastic members 24. The atrial connector 22 is disposed on the atrial stent 11 and forms an atrial through hole 221. The multiple atrial clamping members 23 are disposed in the atrial through hole 221 and are distributed circumferentially in the atrial through hole 221. One end of each of the multiple atrial clamping members 23 is rotatably disposed on the atrial connector 20, and the other ends of the multiple atrial clamping members 23 are close to each other and together form an atrial perforation 25. The atrial lead 40 passes through the atrial perforation 25. The multiple atrial elastic members 24 are respectively disposed on the wall of the atrial through hole 221 and correspond one-to-one with the multiple atrial clamping members 23, thereby providing the atrial clamping members 23 with elastic force to clamp the atrial lead 40. The position of the atrial electrode 41 in the atrial connector 20 can be adjusted by adjusting the engagement position of the atrial lead 40 with the multiple atrial connectors 23.

[0072] The atrial connector 20 mainly consists of an atrial connector 22, multiple atrial snap-fit ​​components 23, and multiple atrial elastic components 24. The atrial connector 22 has an atrial snap-fit ​​groove 21 on its outer periphery, and the atrial stent 11 has an atrial snap-fit ​​connector 111. The atrial snap-fit ​​connector 111 engages with the atrial snap-fit ​​groove 21, thereby enabling the connection between the atrial connector 22 and the atrial stent 11.

[0073] Furthermore, the atrial connector 22 has an atrial through hole 221 inside, which provides space for multiple atrial snap-fit ​​connectors 23.

[0074] Furthermore, one end of each of the multiple atrial clamping connectors 23 can rotate within the atrial connector 20, allowing each end of the atrial clamping connector 23 to rotate freely within a certain range. Since the surface of each atrial clamping connector 23 is inclined, the multiple atrial clamping connectors 23 are conical in shape, with the other end of each atrial clamping connector 23 being arc-shaped. The other ends of the multiple atrial clamping connectors 23 can be close together to form an atrial perforation 25, which is circular. The other ends of the multiple atrial clamping connectors 23 can also be spaced apart, allowing for variations in aperture size. The atrial lead 40 passes through the atrial perforation 25, thus clamping atrial leads 40 of different diameters, providing good adaptability. In its free state, the size of the atrial perforation 25 is smaller than the size of the atrial lead 40.

[0075] Furthermore, multiple atrial elastic elements 24 are respectively disposed on the wall of the atrial through-hole 221. Before the atrial lead 40 passes through the atrial through-hole 25, multiple atrial clamping elements 23 are close to each other to form a circular atrial through-hole 25. When the atrial lead 40 passes through the atrial through-hole 25, the atrial lead 40 can exert a force on the multiple atrial clamping elements 23 to move away from each other. The atrial lead 40 can make the multiple atrial clamping elements 23 move away from each other, thereby increasing the size of the atrial through-hole 25, which facilitates the insertion of the atrial lead 40. As the multiple atrial clamping elements 23 gradually move away from each other, since the multiple atrial elastic elements 24 are arranged opposite to the multiple atrial clamping elements 23, the atrial clamping elements 23 can gradually compress the atrial elastic elements 24, causing the atrial elastic elements 24 to undergo elastic deformation. In this way, the atrial elastic elements 24 can provide the atrial clamping elements 23 with an elastic force to hold the atrial lead 40.

[0076] Furthermore, such as Figure 7 As shown, the ventricular connector 30 includes: a ventricular connector 32, a plurality of ventricular clamping members 33, and a plurality of ventricular elastic members 35. The ventricular connector 32 is disposed on the ventricular stent 12 and forms a ventricular through hole 321. The plurality of ventricular clamping members 33 are disposed in the ventricular through hole 321 and are distributed circumferentially in the ventricular through hole 321. One end of each of the plurality of ventricular clamping members 33 is rotatably disposed on the ventricular connector 30, and the other ends of the plurality of ventricular clamping members 33 are close to each other and together form a ventricular perforation 34. The ventricular lead 50 passes through the ventricular perforation 34. The plurality of ventricular elastic members 35 are respectively disposed on the wall of the ventricular through hole 321 and correspond one-to-one with the plurality of ventricular clamping members 33, thereby providing the ventricular clamping members 33 with elastic force to clamp the ventricular lead 50. The position of the ventricular electrode 51 in the ventricular connector 30 can be adjusted by adjusting the engagement position of the ventricular lead 50 with the multiple ventricular connectors 33.

[0077] Specifically, the ventricular connector 32 has a ventricular through hole 321 inside, which provides space for multiple ventricular snap-fit ​​components 33.

[0078] Furthermore, one end of each of the multiple ventricular clamps 33 can rotate within the ventricular connector 30, allowing each end of the ventricular clamp 33 to rotate freely within a certain range. Since the surface of each ventricular clamp 33 is inclined, the multiple ventricular clamps 33 are conical in shape, with the other end of each ventricular clamp 33 being arc-shaped. The other ends of the multiple ventricular clamps 33 can be close together to form a ventricular perforation 34, which is circular. The other ends of the multiple ventricular clamps 33 can also be spaced apart, allowing for variations in aperture size. The ventricular lead 50 passes through the ventricular perforation 34, thus clamping ventricular leads 50 of different diameters, providing good adaptability. In its free state, the size of the ventricular perforation 34 is smaller than the size of the ventricular lead 50.

[0079] Also, such as Figure 9 As shown, multiple ventricular elastic elements 35 are respectively disposed on the wall of the ventricular through-hole 321. Before the ventricular lead 50 passes through the ventricular through-hole 34, multiple ventricular clamping elements 33 are close to each other to form a circular ventricular through-hole 34. When the ventricular lead 50 passes through the ventricular through-hole 34, the ventricular lead 50 can exert a force on the multiple ventricular clamping elements 33 to move away from each other. In this way, the ventricular lead 50 can make the multiple ventricular clamping elements 33 move away from each other, thereby increasing the size of the ventricular through-hole 34, which facilitates the insertion of the ventricular lead 50. As the multiple ventricular clamping elements 33 gradually move away from each other, since the multiple ventricular elastic elements 35 are arranged opposite to the multiple ventricular clamping elements 33, the ventricular clamping elements 33 can gradually compress the ventricular elastic elements 35, causing the ventricular elastic elements 35 to undergo elastic deformation. In this way, the ventricular elastic elements 35 can provide the ventricular clamping elements 33 with an elastic force to hold the ventricular lead 50.

[0080] Furthermore, the atrial elastic element 24 and the ventricular elastic element 35 can be configured as springs or other elastic elements.

[0081] According to another embodiment of the present invention, one end of the atrial lead 40 passes through the atrial connector 20, and the one end of the atrial lead 40 is either interference-fitted or threadedly fitted with the atrial connector 20. The position of the atrial electrode 41 in the atrial connector 20 can be adjusted by adjusting the interference-fitted or threaded fit between the one end of the atrial lead 40 and the atrial connector 20.

[0082] One end of the atrial lead 40 can be fitted with an atrial connector 20 for interference fit, which makes the connection between the atrial lead 40 and the atrial connector 20 more stable and secure.

[0083] Alternatively, one end of the atrial lead 40 may be threaded on its outer periphery, and the atrial connector 20 may also have a corresponding threaded hole inside. One end of the atrial lead 40 may pass through the threaded hole for threaded engagement, thereby facilitating the installation and removal of the atrial lead 40 and the atrial connector 20.

[0084] Furthermore, one end of the ventricular lead 50 passes through the ventricular connector 30, and the one end of the ventricular lead 50 is either press-fitted or threaded into the ventricular connector 30. The position of the ventricular electrode 51 in the ventricular connector 30 can be adjusted by adjusting the press-fit or threaded fit between the one end of the ventricular lead 50 and the ventricular connector 30.

[0085] One end of the ventricular lead 50 can be fitted with a ventricular connector 30 for interference fit, which makes the connection between the ventricular lead 50 and the ventricular connector 30 more stable and secure.

[0086] Alternatively, one end of the ventricular lead 50 may be threaded, and the ventricular connector 30 may also have a corresponding threaded hole inside. One end of the ventricular lead 50 may pass through the threaded hole for threaded engagement, thereby facilitating the installation and removal of the ventricular lead 50 and the ventricular connector 30.

[0087] According to some embodiments of the present invention, there is one atrial electrode 41, which is disposed at one end of the atrial lead 40; there is one ventricular electrode 51, which is disposed at one end of the ventricular lead 50; or there are multiple atrial electrodes 41, which are distributed at intervals; and there are multiple ventricular electrodes 51, which are distributed at intervals.

[0088] In this configuration, one end of the atrial lead 40 is energized to provide power to the atrial electrode 41, and one end of the ventricular electrode 51 is energized to provide power to the ventricular electrode 51.

[0089] Furthermore, the multiple atrial electrodes 41 are spaced apart, which can provide a wider range and ensure that the ablation energy can be accurately applied to the nerves in the atrium, thereby improving the efficiency of the atrial electrodes 41 in ablating the nerves in the atrium.

[0090] The multiple ventricular electrodes 51 are spaced apart, which can provide a wider range and ensure that the ablation energy is accurately applied to the nerves in the ventricle, thereby improving the efficiency of the ventricular electrodes 51 in ablating the nerves in the ventricle.

[0091] According to some embodiments of this utility model, such as Figure 6 As shown, the valve stent 100 also includes an inner stent 60 and multiple leaflets 70. The inner stent 60 is connected to the atrial stent 11 and is located inside the atrial stent 11. The inner stent 60 forms a channel. The multiple leaflets 70 are disposed in the inner stent 60 and selectively open and close the channel. The atrial lead 40 extends into the atrial stent 11 and then bends to extend to the atrial connector 20. The ventricular lead 50 extends into the atrial stent 11, then bends to pass through the channel and the ventricular stent 12 and then extends to the ventricular connector 30.

[0092] The inner stent 60 has a channel that allows ventricular blood to enter the atrium. Specifically, the valve stent 100 is made of nickel-titanium and has self-expanding properties. The leaflets 70 of the heart valve stent 100 are located at the channel of the inner stent 60. The annular end of the valve stent 100 compresses the original leaflet structure to the edge, thus replacing the original damaged valve.

[0093] Furthermore, the atrial end and the leaflet 70 end are sewn with skirts to prevent blood from passing through the edges, and the atrial end and ventricular end of the external stent 10 are placed in the atrium and ventricle of the human heart, respectively.

[0094] Also, such as Figure 6 As shown, the atrial stent 11 and ventricular stent 12 are spherical. The spherical, near-spherical, or atrioventricular-like external stent 10 supports both ends of the heart, preventing displacement of the valve stent 100 during heartbeat. The inner stent 60 has an inner skirt 73 sewn to its bottom, and the inner skirt 73 is higher than the leaflet 70. The channel of the inner stent 60 is sewn with leaflets 70, which can function as the original leaflets. The outer stent 10 has an outer skirt 72, and the outer skirt 72 and the inner skirt 73 are spliced ​​together at the bottom to ensure that blood can only flow through the channel of the inner stent 60. The atrial lead 40 is located in the atrium, and the ventricular lead 50 is located in the ventricle. The atrial lead 40 is fixed by the atrial connector 20, and the ventricular lead 50 is fixed by the ventricular connector 30, so that they are close to the inner wall of the heart.

[0095] Furthermore, the atrial lead 40 extends into the atrial stent 11 and then bends to extend to the atrial connector 20, which facilitates the connection between the atrial lead 40 and the atrial connector 20. The ventricular lead 50 extends into the atrial stent 11, then bends to pass through the channel and the ventricular stent 12 before extending to the ventricular connector 30, which also facilitates the connection between the ventricular lead 50 and the ventricular connector 30.

[0096] Furthermore, the outer stent 10 and the inner stent 60 are connected and fixed by rivets 71. One end of the atrial stent 11 in the outer stent 10 is placed in the atrial locking groove 21 of the atrial connector 20. The atrial locking connector 111 of the atrial stent 11 in the outer stent 10 can rotate around the contact position between the atrial locking connector 111 and the atrial locking groove 21, thereby facilitating the implantation of the valve stent 100.

[0097] Alternatively, the outer bracket 10 and the inner bracket 60 can be fixed by laser welding, which can make the connection between the outer bracket 10 and the inner bracket 60 more stable and firm.

[0098] According to some embodiments of this utility model, such as Figure 1As shown, the ventricular lead 50 is located at the center of the passage, facilitating connection between the ventricular lead 50 and the ventricular electrode 51 within the ventricular connector 30. When the multiple leaflets 70 are closed, each leaflet 70 is sealed to the ventricular lead 50. This prevents blood from passing through the gaps between the multiple leaflets 70 and the ventricular lead 50.

[0099] Alternatively, an arc-shaped clearance notch may be formed at the tip of the leaflet 70 adjacent to the ventricular lead 50. Multiple clearance notches can be formed to adapt to the shape of the ventricular lead 50, thereby enabling multiple leaflets 70 to seal with the ventricular lead 50. For example, the ventricular lead 50 has a circular cross-section, and multiple clearance notches together form a matching circular hole.

[0100] Alternatively, the leaflet 70 may have a sealing portion bent relative to the tip of the ventricular lead 50, which is attached to the outer peripheral wall of the ventricular lead 50. Multiple sealing portions can be formed to fit the shape of the ventricular lead 50, thereby achieving a sealing fit between the multiple leaflets 70 and the ventricular lead 50. For example, if the ventricular lead 50 has a circular cross-section, multiple sealing portions can collectively form a matching circular hole.

[0101] According to some embodiments of the present invention, the leaflet 70 is horseshoe-shaped.

[0102] Among them, the leaflet 70 is similar to a horseshoe-shaped design. The leaflet 70 is squeezed in the middle to seal the ventricular lead 50, which can avoid the gap between the leaflet 70 and the ventricular lead 50, thereby improving the sealing between the leaflet 70 and the ventricular lead 50.

[0103] A valve replacement system according to a second aspect of the present invention includes: a valve stent 100 as described above and a pulse generator, wherein the pulse generator is electrically connected to an atrial electrode 41 and a ventricular electrode 51, respectively.

[0104] The atrial lead 40 has one end that passes through the blood vessel wall and connects to the pulse generator for atrial defibrillation, and the ventricular lead 50 has the other end that passes through the blood vessel wall and connects to the pulse generator for ventricular defibrillation. The pulse generator can be placed on the skin. When atrial or ventricular fibrillation occurs, the pulse generator releases electrical energy, which can ablate the atrial or ventricular nerves through the atrial lead 40 and ventricular lead 50 respectively, providing timely defibrillation and ensuring the patient's safety. Furthermore, the atrial electrode 41 and ventricular electrode 51 can also be wirelessly connected to the pulse generator.

[0105] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0107] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A valve stent, characterized in that, include: An external stent (10) includes an atrial stent (11) and a ventricular stent (12), wherein the ventricular stent (12) is connected below the atrial stent (11); Atrial electrode (41), wherein the atrial electrode (41) is disposed on the atrial stent (11), and the atrial electrode (41) is adapted to ablate nerves in the atrium when energized; Ventricular electrode (51), the ventricular electrode (51) is disposed on the ventricular stent (12), the ventricular electrode (51) is adapted to ablate nerves in the ventricle when energized.

2. The valve stent according to claim 1, characterized in that, Also includes: Atrial connector (20), the atrial connector (20) is disposed on the atrial stent (11), and the atrial electrode (41) is disposed on the atrial connector (20); Ventricular connector (30), the ventricular connector (30) is disposed on the ventricular stent (12), and the ventricular electrode (51) is disposed on the ventricular connector (30).

3. The valve stent according to claim 2, characterized in that, The atrial connector (20) is disposed at the end of the atrial stent (11) away from the ventricular stent (12), and the ventricular connector (30) is disposed at the end of the ventricular stent (12) away from the atrial stent (11).

4. The valve stent according to claim 3, characterized in that, The atrial stent (11) is provided with a plurality of circumferentially distributed atrial snap-fit ​​connectors (111) at one end away from the ventricular stent (12), and the atrial connector (20) is provided with a plurality of circumferentially distributed atrial snap-fit ​​grooves (21). The plurality of atrial snap-fit ​​connectors (111) and the plurality of atrial snap-fit ​​grooves (21) are snap-fitted in a one-to-one correspondence, and the atrial snap-fit ​​connectors (111) have atrial mobility margin in the atrial snap-fit ​​grooves (21).

5. The valve stent according to claim 4, characterized in that, The atrial mobility margin includes a first atrial mobility margin for the atrial clamp connector (111) to move along the length direction of the atrial clamp slot (21) and a second atrial mobility margin for the atrial clamp connector (111) to rotate about its contact position with the atrial clamp slot (21).

6. The valve stent according to claim 3, characterized in that, The ventricular stent (12) is provided with a plurality of circumferentially distributed ventricular snap-fit ​​connectors at one end away from the atrial stent (11), and the ventricular connector (30) is provided with a plurality of circumferentially distributed ventricular snap-fit ​​grooves (31). The plurality of ventricular snap-fit ​​connectors and the plurality of ventricular snap-fit ​​grooves (31) are snap-fitted in a one-to-one correspondence, and the ventricular snap-fit ​​connectors have ventricular movement margin in the ventricular snap-fit ​​grooves (31).

7. The valve stent according to claim 6, characterized in that, The ventricular mobility margin includes a first ventricular mobility margin for the ventricular snap-fit ​​connector to move along the length direction of the ventricular snap-fit ​​groove (31) and a second ventricular mobility margin for the ventricular snap-fit ​​connector to rotate about its contact position with the ventricular snap-fit ​​groove (31).

8. The valve stent according to any one of claims 2-7, characterized in that, Also includes: An atrial lead (40) is provided at one end of the atrial connector (20), and an atrial electrode (41) is provided at one end of the atrial lead (40) and electrically connected to one end of the atrial lead (40). A ventricular lead (50) is provided at one end of the ventricular connector (30), and a ventricular electrode (51) is provided at one end of the ventricular lead (50) and electrically connected to one end of the ventricular lead (50).

9. The valve stent according to claim 8, characterized in that, The atrial connector (20) includes: Atrial connector (22), wherein the atrial connector (22) is disposed on the atrial stent (11), and the atrial connector (22) has an atrial through hole (221); Multiple atrial connectors (23) are disposed in the atrial through hole (221) and distributed circumferentially in the atrial through hole (221). One end of each of the multiple atrial connectors (23) is rotatably disposed on the atrial connector (20). The other ends of the multiple atrial connectors (23) are close to each other and together form an atrial perforation (25). The atrial lead (40) passes through the atrial perforation (25). Multiple atrial elastic elements (24) are respectively disposed on the wall of the atrial through hole (221) and correspond one-to-one with multiple atrial clamping elements (23) to provide elastic force for the atrial clamping elements (23) to hold the atrial lead (40); and / or The ventricular connector (30) includes: Ventricular connector (32), the ventricular connector (32) is disposed on the ventricular stent (12), and the ventricular connector (32) has a ventricular through hole (321); Multiple ventricular snap-fit ​​connectors (33) are disposed within the ventricular through-hole (321) and distributed circumferentially in the ventricular through-hole (321). One end of each of the multiple ventricular snap-fit ​​connectors (33) is rotatably disposed on the ventricular connector (30). The other ends of the multiple ventricular snap-fit ​​connectors (33) are close to each other and together form a ventricular perforation (34). The ventricular lead (50) passes through the ventricular perforation (34). Multiple ventricular elastic elements (35) are respectively disposed on the wall of the ventricular through hole (321) and correspond one-to-one with multiple ventricular snap-fit ​​elements (33) to provide elastic force for the ventricular snap-fit ​​elements (33) to hold the ventricular lead (50).

10. The valve stent according to claim 8, characterized in that, One end of the atrial lead (40) passes through the atrial connector (20), and one end of the atrial lead (40) is press-fitted or threaded with the atrial connector (20); and / or One end of the ventricular lead (50) passes through the ventricular connector (30), and the other end of the ventricular lead (50) is either interference-fitted or threaded with the ventricular connector (30).

11. The valve stent according to claim 8, characterized in that, The atrial electrode (41) is a single electrode located at one end of the atrial lead (40), and the ventricular electrode (51) is a single electrode located at one end of the ventricular lead (50); or There are multiple atrial electrodes (41) and the multiple atrial electrodes (41) are distributed at intervals. There are multiple ventricular electrodes (51) and the multiple ventricular electrodes (51) are distributed at intervals.

12. The valve stent according to claim 8, characterized in that, The valve stent also includes: An internal stent (60) is connected to and located within the atrial stent (11), and the internal stent (60) forms a channel; Multiple leaflets (70) are disposed on the inner support (60) and selectively open and close the channel; The atrial lead (40) extends into the atrial stent (11) and then bends to extend to the atrial connector (20). The ventricular lead (50) extends into the atrial stent (11) and then bends to pass through the channel and the ventricular stent (12) before extending to the ventricular connector (30).

13. The valve stent according to claim 12, characterized in that, The ventricular lead (50) is located at the center of the passage, and when the multiple leaflets (70) are closed, the multiple leaflets (70) respectively seal against the ventricular lead (50); and / or The leaflets (70) have arc-shaped clearance notches near the tips of the ventricular leads (50), and the plurality of clearance notches are shaped to fit the ventricular leads (50) so that the plurality of leaflets (70) are in a sealing fit with the ventricular leads (50); and / or A sealing portion, bent relative to the tip of the ventricular lead (50), is provided on each leaflet (70). The sealing portion is attached to the outer peripheral wall of the ventricular lead (50). Multiple sealing portions can be formed to fit the ventricular lead (50) so that the multiple leaflets (70) and the ventricular lead (50) form a sealing fit; and / or The petals (70) are horseshoe-shaped.

14. A valve replacement system, characterized in that, include: Valve stents as described in any one of claims 1-13; A pulse generator is electrically connected to the atrial electrode (41) and the ventricular electrode (51), respectively.

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