Recyclable valve frame of polymer valve

Abstract

The utility model discloses a polymer valve recoverable valve frame, and belongs to the technical field of medical instruments, and the polymer valve recoverable valve frame comprises a valve frame body, a traction guide wire, a first shell, a second shell, a first control guide wire and a second control guide wire. The first shell is fixed to the end of the traction guide wire, the valve frame body and the second shell are sequentially placed behind the first shell, the first control guide wire is used for controlling the valve frame body to move, the first control guide wire can be separated from the valve frame body after the valve frame body moves to a designated position, and the second control guide wire is used for controlling the second shell to move. According to the recyclable high polymer valve frame, the valve frame body can be quickly and accurately fed into a designated position in a human body, when the valve frame body needs to be taken out, the first control guide wire can be connected with the valve frame body again, then the valve frame body needs to be taken out, and the recyclable high polymer valve frame is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a recyclable polymer valve frame. Background Art

[0002] Artificial heart valves are used to replace damaged or diseased heart valves. In vertebrates, the heart is a muscular organ with four compression chambers: left and right atria, and left and right ventricles, each with its own independent one-way valve. The natural heart valves are defined as the aortic valve, the mitral valve (or bicuspid valve), the tricuspid valve, and the pulmonary valve. Since the aortic valve or the mitral valve are located on the left side of the heart and are subject to the greatest pressure, it is more common to repair or replace them, but an artificial heart valve can be used to replace any of the natural valves mentioned above.

[0003] Existing artificial heart valves generally do not need to be removed after being inserted, but as the heart valve is used, it will have a certain degree of wear and tear and may become worn or damaged. Therefore, there is an urgent need for a valve frame recovery device that can be used to introduce the artificial valve into the patient's body and remove the artificial valve in the human body after a period of use for repair or direct replacement. Utility Model Content

[0004] The utility model discloses a recyclable macromolecular valve frame to improve the above problems.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] Based on the above purpose, the utility model discloses a polymer valve recyclable valve frame, comprising:

[0007] A valve frame body, the valve frame body comprising a frame body that can radially expand between a contracted state and an expanded state and a plurality of valves installed in the frame body, wherein the frame body is provided with an elastic buckle;

[0008] A traction guide wire, wherein the frame is sleeved outside the traction guide wire, and the traction guide wire and the frame are slidably matched;

[0009] A first shell, wherein the first shell is connected to the traction guide wire, a portion of the first shell is sleeved outside the frame to make the elastic buckle in a contracted state, and when the first shell is separated from the frame, the elastic buckle can freely pop out toward the outside of the frame;

[0010] A second shell, the second shell is slidably matched with the traction guide wire, and the second shell is located on a side of the frame away from the first shell;

[0011] A first control guide wire, which is detachably engaged with the frame; and

[0012] A second control guide wire, which is connected to the second housing.

[0013] Optionally: A receiving groove is provided at a position on the first housing corresponding to the elastic buckle, and the elastic buckle can be retracted into the receiving groove.

[0014] Optionally: The second housing is provided with a first wire threading hole and a second wire threading hole, the first wire threading hole and the second wire threading hole are spaced apart, the first control guide wire is threaded through the first wire threading hole, and the first control guide wire is slidably engaged with the first wire threading hole, the guiding guide wire is threaded through the second wire threading hole, and the guiding guide wire is slidably engaged with the second wire threading hole.

[0015] Optionally: The frame is provided with a threaded hole, and the end of the first control guide wire is provided with an external thread, and the first control guide wire is threadedly connected to the frame.

[0016] Optionally: The frame is provided with a control block and a control rope, the control block is rotatably connected to the frame, the control block is provided with a through hole, the contour of the through hole is polygonal, and the through hole is larger than the threaded hole, one end of the control rope is connected to the control block, the other end of the control rope bypasses the frame and is connected to the control block, and when the control rope is wound around the control block, the frame contracts;

[0017] A control portion is provided on the first control guide wire, and the shape of the control portion is adapted to the shape of the through hole. When the end of the first control guide wire abuts against the port of the threaded hole, the control portion is located in the through hole, and when the end of the first control guide wire completely enters the threaded hole, the control portion is still located in the through hole. When the first control guide wire rotates in the first direction, the first control guide wire leaves the threaded hole, and at this time the control guide wire drives the control block to rotate in the first direction so that the control rope leaves the control block.

[0018] Optionally: The cross-section of the through hole is rectangular.

[0019] Optionally: The second housing is provided with a relief hole, the diameter of the relief hole is larger than the diameter of the control portion, and the diameter of the relief hole is larger than the diameter of the first wire threading hole, and the control portion can enter or leave the relief hole.

[0020] Optionally: The length of the relief hole is greater than the length of the control portion.

[0021] Optionally: A limiting portion is provided at the end of the guiding guide wire.

[0022] Optionally, the valve holder body further includes a plurality of valve clasps. The valve is detachably engaged with the holder body. The plurality of valve clasps are arranged at intervals along the circumferential direction of the holder body. The valve is mounted on the valve clasps, and the plurality of valves are connected to the plurality of valve clasps in a one-to-one correspondence.

[0023] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0024] The embodiment of the present utility model discloses a polymer valve retrievable valve holder, which includes a valve holder body, a guiding wire, a first housing, a second housing, a first control wire, and a second control wire. The first housing is fixed to the end of the guiding wire. The valve holder body and the second housing are sequentially placed behind. The first control wire is used to control the movement of the valve holder body, and the first control wire can be separated from the valve holder body after the valve holder body moves to a specified position. The second control wire is used to control the movement of the second housing.

[0025] The polymer valve retrievable valve holder disclosed by the present utility model can quickly and accurately send the valve holder body to a specified position in the human body. When it is necessary to remove the valve holder body, the first control wire can be reconnected to the valve holder body, and then the valve holder body can be removed. The structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shows a schematic diagram of the polymer valve retrievable valve holder disclosed by the embodiment of the present utility model;

[0027] Figure 2 Shows a schematic diagram of the valve holder body disclosed by the embodiment of the present utility model;

[0028] Figure 3 Shows a top view schematic diagram of the valve holder body disclosed by the embodiment of the present utility model;

[0029] Figure 4 Shows the Figure 3 partial enlarged schematic diagram disclosed by the embodiment of the present utility model;

[0030] Figure 5 Shows an unfolded schematic diagram of the holder body disclosed by the embodiment of the present utility model;

[0031] Figure 6 Shows the Figure 5 partial enlarged schematic diagram disclosed by the embodiment of the present utility model;

[0032] Figure 7 Shows a schematic diagram of the first control wire disclosed by the embodiment of the present utility model;

[0033] Figure 8Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the first state;

[0034] Figure 9 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the second state;

[0035] Figure 10 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the third state;

[0036] Figure 11 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the fourth state;

[0037] Figure 12 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the fifth state;

[0038] Figure 13 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the sixth state;

[0039] Figure 14 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the seventh state;

[0040] Figure 15 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the eighth state;

[0041] Figure 16 Shows a schematic diagram of the retrievable stent of the polymer valve disclosed in the embodiment of the present invention in the ninth state.

[0042] In the figure:

[0043] 100 - stent body, 110 - frame body, 111 - threaded hole, 120 - valve, 130 - control block, 131 - through hole, 140 - control rope, 150 - elastic buckle, 200 - first housing, 300 - second housing, 400 - guide wire for traction, 500 - first control guide wire, 510 - control part, 600 - second control guide wire. Detailed implementation manner

[0044] The present invention will be further described in detail below through specific examples in combination with the drawings.

[0045] Example:

[0046] Refer to Figures 1 to 7, an embodiment of the present utility model discloses a polymer valve retrievable valve frame, which includes a valve frame body 100, a guiding wire 400, a first housing 200, a second housing 300, a first control wire 500, and a second control wire 600. The first housing 200 is fixed to the end of the guiding wire 400, and the valve frame body 100 and the second housing 300 are sequentially placed behind it. The first control wire 500 is used to control the movement of the valve frame body 100, and after the valve frame body 100 moves to the designated position, the first control wire 500 can be separated from the valve frame body 100. The second control wire 600 is used to control the movement of the second housing 300. Among them, the valve frame body 100 is made of polymer material.

[0047] The polymer valve retrievable valve frame disclosed in this embodiment can quickly and accurately send the valve frame body 100 to the designated position in the human body. And when it is necessary to take out the valve frame body 100, the first control wire 500 can be reconnected to the valve frame body 100, and then the valve frame body 100 can be taken out. The structure is simple and the operation is convenient.

[0048] Refer to Figures 2 to 6 and Figure 9 , the valve frame body 100 includes a frame body 110, a valve 120, and a valve 120 buckle. The frame body 110 can radially expand between a contracted state and an expanded state, and the frame body 110 itself has a tendency to expand outwards. The valve 120 is detachably matched with the frame body 110. A plurality of valve 120 buckles are arranged at intervals along the circumference of the frame body 110. The valve 120 is installed on the valve 120 buckle, and a plurality of valves 120 are connected to a plurality of valve 120 buckles in one-to-one correspondence. The valve 120 is located inside the frame body 110. An elastic buckle 150 is also provided on the frame body 110. In the natural state, one end of the elastic buckle 150 is connected to the end of the frame body 110, and the other end of the elastic buckle 150 will rotate towards the outside of the frame body 110 until it rotates to a predetermined angle to form Figure 9 the shape in

[0049] A control rope 140 is provided on the frame body 110. The control rope 140 is wound around the outside of the frame body 110 to be used for restricting the frame body 110 so that the frame body 110 remains in a contracted state; when the control rope 140 releases the restriction on the frame body 110, the frame body 110 can expand freely.

[0050] Refer to Figures 3 to 6, a threaded hole 111 is provided on the frame body 110, and the axis of the threaded hole 111 is arranged parallel to the frame body 110. A control block 130 is further provided on the frame body 110. The control block 130 is located at the threaded hole 111, and the control block 130 is rotatably connected to the frame body 110. The rotation axis of the control block 130 is arranged coaxially with the threaded hole 111. A through hole 131 is provided on the control block 130. The through hole 131 is arranged coaxially with the threaded hole 111. The contour of the through hole 131 is polygonal, and the through hole 131 is larger than the threaded hole 111.

[0051] One end of the control rope 140 is connected to the control block 130, and the other end of the control rope 140 bypasses the frame body 110 and is connected to the control block 130. When the control rope 140 is wound around the control block 130, the frame body 110 contracts. When the control rope 140 leaves the control block 130, the frame body 110 can expand freely. When the control block 130 rotates in the first direction, the control rope 140 gradually leaves the control block 130; when the control block 130 rotates in the second direction opposite to the first direction, the control rope 140 gradually winds around the control block 130.

[0052] It should be noted that, referring to Figure 4 , in this embodiment, the clockwise direction in the figure is taken as the first direction, and the counterclockwise direction in the figure is taken as the second direction.

[0053] External threads are provided at the end of the first control guide wire 500, and the first control guide wire 500 is threadedly connected to the frame body 110. A control portion 510 is further provided on the first control guide wire 500. The shape of the control portion 510 is adapted to the shape of the through hole 131. When the end of the first control guide wire 500 abuts against the port of the threaded hole 111, the control portion 510 is located within the through hole 131, and when the end of the first control guide wire 500 completely enters the threaded hole 111, the control portion 510 is still located within the through hole 131. When the first control guide wire 500 rotates in the first direction, the first control guide wire 500 leaves the threaded hole 111, and at this time the control guide wire drives the control block 130 to rotate in the first direction so that the control rope 140 leaves the control block 130; when the first control guide wire 500 rotates in the second direction, the first control guide wire 500 gradually enters the threaded hole 111, and at this time the control guide wire drives the control block 130 to rotate in the second direction so that the control rope 140 gradually winds around the control block 130 and causes the frame body 110 to gradually contract.

[0054] In this embodiment, the cross-section of the through hole 131 can be set as a rectangle, so that it is more convenient for the control portion 510 to enter the through hole 131. At the same time, the through hole 131 of this shape is also more convenient to process. Of course, setting the through hole 131 as a rectangle is only one implementation manner of this embodiment. In other implementation manners, the shape of the through hole 131 can also be set as a pentagon or a hexagon, etc.

[0055] See also Figure 1 , a limiting portion is provided at the end of the traction guidewire 400, and the limiting portion can be formed by bending the end of the traction guidewire 400. The first shell 200 is fixedly connected to the traction guidewire 400, and the first shell 200 is located near the limiting portion on the traction guidewire 400. A storage groove is provided at a position corresponding to the elastic buckle 150 on the first shell 200, and the elastic buckle 150 can be retracted into the storage groove. The inner diameter of the first shell 200 can be slightly larger than the outer diameter of the frame 110 after contraction. When the frame 110 moves toward the first shell 200, a part of the frame 110 can enter the first shell 200. At this time, the elastic buckle 150 is completely received in the storage groove to facilitate the movement of the valve frame body 100 in the blood vessel; when the valve frame body 100 moves to the specified position, the frame 110 is separated from the first shell 200, and the free end of the elastic buckle 150 will pop outward to form Figure 9 The shape of the.

[0056] The second housing 300 and the frame 110 are both slidably matched with the traction guide wire 400, that is, the second housing 300 and the frame 110 can both slide along the traction guide wire 400. The second housing 300 is located on the side of the frame 110 away from the first housing 200, and a first threading hole and a second threading hole are provided on the second housing 300. The first threading hole and the second threading hole are both parallel to the axis of the second housing 300, and the first threading hole and the second threading hole are arranged at intervals. The first control guide wire 500 is inserted into the first threading hole, and the first control guide wire 500 is slidably matched with the first threading hole. One end of the first control guide wire 500 passing through the second housing 300 can form a detachable match with the frame 110. The traction guide wire 400 is inserted into the second threading hole, and the traction guide wire 400 is slidably matched with the second threading hole. The second control guide wire 600 is fixedly connected to the second housing 300 , and the second housing 300 can be controlled to move on the traction guide wire 400 through the relative movement between the second control guide wire 600 and the traction guide wire 400 .

[0057] Among them, a clearance hole for accommodating the control unit 510 is also provided at one end of the second housing 300 facing the frame 110. The clearance hole is coaxially arranged with the first threading hole, and the length of the clearance hole is greater than the sum of the lengths of the ends of the control unit 510 and the first control guide wire 500, so that the clearance hole can accommodate the ends of the control unit 510 and the first control guide wire 500, thereby preventing the first control guide wire 500 from causing damage to human blood vessels and other parts when leaving the human body. The diameter of the clearance hole is greater than the diameter of the control unit 510, and the diameter of the clearance hole is greater than the diameter of the first threading hole, and the control unit 510 can enter or leave the clearance hole.

[0058] The polymer valve recyclable valve frame disclosed in this embodiment is used as follows:

[0059] See also Figures 8 to 13 First, the first housing 200 and the valve frame body 100 are placed in the heart of the human body, so that both the first housing 200 and the valve frame body 100 enter the heart. Then, the valve frame body 100 is pulled back to separate the valve frame body 100 from the first housing 200. Figure 9 When the valve frame body 100 is separated from the shell, the elastic buckle 150 on the frame body 110 pops outward. Then continue to pull the valve frame body 100 outward until Figure 10 The valve frame body 100 reaches the preset position. Then, the first control guide wire 500 is rotated to separate the first control guide wire 500 from the frame body 110. During the separation process of the first control guide wire 500 from the frame body 110, the control rope 140 is gradually withdrawn from the control block 130, so that the frame body 110 can be gradually opened. When the first control guide wire 500 is completely separated from the frame body 110, the frame body 110 has been completely opened to form the following Figure 11 In the shape shown, the frame 110 can just support the position of the human heart, and the multiple valves 120 can work to replace the work of the human heart valve 120. Figure 12 After the frame 110 is opened, the second control guide wire 600 can be used to push the second housing 300 toward the first housing 200. During this process, the end of the first control guide wire 500 and the control part 510 can be stored in the clearance groove on the second housing 300 to prevent the first control guide wire 500 from causing damage to the human blood vessels when withdrawing from the human body. After the second housing 300 is in contact with the first housing 200, the first housing 200 and the second housing 300 can be completely removed by pulling the traction guide wire 400. At this point, the installation of the valve frame body 100 is completed.

[0060] When the stent needs to be removed from the body, refer to Figures 13 to 16 First, deliver the first shell 200 and the second shell 300 to the vicinity of the heart, and then use the traction guide wire 400 to deliver the first shell 200 to the other side of the frame 110. At this time, the first shell 200 and the second shell 300 are respectively located on both sides of the frame 110. Then the first control guide wire 500 can be pushed to allow the end of the first control guide wire 500 to enter the position of the threaded hole 111 on the frame 110. At this time, the control part 510 on the first control guide wire 500 will just be inserted into the through hole 131. After that, when the first control guide wire 500 is rotated, the first control guide wire 500 can be connected to the frame 110. At the same time, the control block 130 is driven to rotate by the control part 510, which will cause the control rope 140 to gradually wrap around the control block 130, so that the frame 110 shrinks to the position as shown in the figure. Figure 15The shape shown. At this time, the frame body 110 can be pushed by the second housing 300 to move towards the first housing 200. When a part of the frame body 110 enters the first housing 200, the elastic buckle 150 on the frame body 110 contracts to form as Figure 16 the shape shown. At this time, the frame body 110 can be taken out of the human body. Thus, the step of taking out the valve frame body 100 is completed.

[0061] The polymer valve retrievable valve frame disclosed in this embodiment has a simple structure and convenient operation, can quickly send the valve frame body 100 into the human body or take it out of the human body, and will not cause harm to human tissues such as blood vessels during this process.

[0062] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A polymer valve recyclable valve frame, characterized in that: include: A valve frame body, the valve frame body comprising a frame body that can radially expand between a contracted state and an expanded state and a plurality of valves installed in the frame body, wherein the frame body is provided with an elastic buckle; A traction guide wire, wherein the frame is sleeved outside the traction guide wire, and the traction guide wire and the frame are slidably matched; A first shell, wherein the first shell is connected to the traction guide wire, a portion of the first shell is sleeved outside the frame to make the elastic buckle in a contracted state, and when the first shell is separated from the frame, the elastic buckle can freely pop out toward the outside of the frame; A second shell, the second shell is slidably matched with the traction guide wire, and the second shell is located on a side of the frame away from the first shell; a first control guide wire, the first control guide wire being detachably matched with the frame; as well as A second control guide wire is connected to the second shell.

2. The polymer valve recyclable valve frame according to claim 1, characterized in that: A receiving groove is provided on the first shell at a position corresponding to the elastic buckle, and the elastic buckle can be retracted into the receiving groove.

3. The polymer valve recyclable valve frame according to claim 1, characterized in that: The second shell is provided with a first threading hole and a second threading hole, the first threading hole and the second threading hole are arranged at intervals, the first control guide wire is passed through the first threading hole, and the first control guide wire is slidably matched with the first threading hole, and the traction guide wire is passed through the second threading hole, and the traction guide wire is slidably matched with the second threading hole.

4. The polymer valve recyclable valve frame according to claim 3, characterized in that: The frame body is provided with a threaded hole, the end of the first control guide wire is provided with an external thread, and the first control guide wire is threadedly connected to the frame body.

5. The polymer valve recyclable valve frame according to claim 4, characterized in that: The frame is provided with a control block and a control rope, the control block is rotatably connected to the frame, a through hole is provided on the control block, the outline of the through hole is a polygon, and the through hole is larger than the threaded hole, one end of the control rope is connected to the control block, and the other end of the control rope is connected to the control block after passing through the frame, and the frame contracts when the control rope is wound around the control block; A control part is provided on the first control guide wire, and the shape of the control part is adapted to the shape of the through hole. When the end of the first control guide wire abuts against the port of the threaded hole, the control part is located in the through hole, and when the end of the first control guide wire completely enters the threaded hole, the control part is still located in the through hole. When the first control guide wire rotates along a first direction, the first control guide wire leaves the threaded hole, and at this time, the control guide wire drives the control block to rotate along the first direction so that the control rope leaves the control block.

6. The polymer valve recyclable valve frame according to claim 5, characterized in that: The cross section of the through hole is rectangular.

7. The polymer valve recyclable valve frame according to claim 5, characterized in that: The second shell is provided with a clearance hole, the diameter of which is larger than the diameter of the control part, and the diameter of which is larger than the diameter of the first threading hole, so that the control part can enter or leave the clearance hole.

8. The polymer valve recyclable valve frame according to claim 7, characterized in that: The length of the clearance hole is greater than the length of the control part.

9. The polymer valve recyclable valve frame according to any one of claims 1 to 8, characterized in that: A limiting portion is arranged at the end of the traction guide wire.

10. The polymer valve recyclable valve frame according to any one of claims 1 to 8, characterized in that: The valve frame body also includes a plurality of valve buckles, the valve and the frame body are detachably matched, the plurality of valve buckles are arranged at intervals along the circumference of the frame body, the valve is installed on the valve buckles, and the plurality of valves are connected to the plurality of valve buckles in a one-to-one correspondence.

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