Thrombus protection umbrella expansion device

Abstract

The embodiment of the application provides a kind of thrombus protection umbrella expansion device, including fixed part and the front top plate, front positioning plate, at least one expansion plate, rear positioning plate and rear top plate sequentially spaced in front-back direction fixed to the fixed part, the length of thrombus protection umbrella is fixed using front top plate and rear top plate, the positioning part of the circumferentially uniform spacing of expansion plate is used to position each screw rod of thrombus protection umbrella, thrombus protection umbrella is radially positioned using front positioning plate and rear positioning plate, in this way, the shape of each screw rod after thrombus protection device expansion, the distance of each screw rod and thrombus protection umbrella center line, the interval angle between adjacent screw rod are substantially identical, so that screw rod is evenly distributed, and better thrombus interception effect can be achieved when using.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a thrombus protection umbrella dilation device. Background Technology

[0002] Thrombus protection umbrellas are commonly used medical devices in surgeries for thromboembolic diseases (such as carotid artery stenting). During the procedure, a thrombus protection umbrella is released near the lesion area to intercept thrombi escaping from upstream, preventing them from detaching and causing distal vascular embolism. This effectively reduces surgical risks and the occurrence of postoperative embolic complications.

[0003] A thrombus protection umbrella is formed by laser-cutting multiple interconnected threaded rods from shape memory alloy tubing (such as nickel-titanium alloy tubing). During use, each threaded rod of the thrombus protection umbrella needs to be bent outwards to expand it to the required diameter. After expansion, it undergoes heat treatment to set the expanded umbrella shape. Currently, the thrombus protection umbrella suffers from uneven distribution of threaded rods after expansion, resulting in poor thrombus interception effectiveness.

[0004] Therefore, how to ensure uniform distribution of the screw after the thrombus protection umbrella expands is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a thrombus protection umbrella expansion device, comprising a fixing part and a front top plate, at least one expansion plate, and a rear top plate, which are fixed to the fixing part and arranged sequentially and spaced apart in the front-rear direction. The rear top plate is detachably connected to the fixing part. The front and rear ends of the thrombus protection umbrella can abut against the front top plate and the rear top plate to achieve a fixed length. The expansion plate has an expansion hole, and the thrombus protection umbrella can be inserted into the expansion hole and expanded in the expansion hole. A plurality of positioning parts for positioning the thrombus protection umbrella screws are arranged evenly and sequentially along the circumferential direction on the side wall of the expansion hole.

[0006] In one embodiment of the thrombus protection umbrella expansion device, the positioning part adopts a positioning hook, one end of the positioning hook is connected to the side wall of the expansion hole, and the other end of the positioning hook forms a hook opening between the side wall of the expansion hole, so that the lead screw of the thrombus protection umbrella can enter the hook groove of the positioning hook through the hook opening.

[0007] In one embodiment of the thrombus protection umbrella expansion device, a plurality of expansion plates are arranged sequentially at intervals along the front-back direction, and the positioning hooks of adjacent expansion plates are staggered by a certain angle.

[0008] In one embodiment of the thrombus protection umbrella expansion device, the expansion device includes a front positioning plate and a rear positioning plate fixed to the fixing part. The front positioning plate is spaced between the front top plate and the foremost expansion plate, and the rear positioning plate is spaced between the rearmost expansion plate and the rear top plate. The front positioning plate has a front positioning hole, and the rear positioning plate has a rear positioning hole. The thrombus protection umbrella can be inserted into the front positioning hole and the rear positioning hole to achieve radial positioning.

[0009] In one embodiment of the thrombus protection umbrella expansion device, the fixing part includes multiple fixing rods, which are spaced apart from each other around the front top plate, the front positioning plate, each expansion plate, the rear positioning plate, and the rear top plate. An operating port is formed between adjacent fixing rods, through which the lead screw of the thrombus protection umbrella can be connected to or disconnected from the positioning part.

[0010] In one embodiment of the thrombus protection umbrella expansion device, the fixing rod is a tubular structure, and the front positioning plate and the rear positioning plate are provided with hollow holes.

[0011] In one embodiment of the thrombus protection umbrella expansion device, the front top plate, the front positioning plate, each expansion plate, and the rear positioning plate are provided with multiple through holes around their perimeters, through which they are fitted onto the outside of each fixing rod.

[0012] In one embodiment of the thrombus protection umbrella expansion device, the fixing rod is provided with multiple pairs of fixing holes for connecting the stop parts in a front-to-back direction, and the front top plate, the front positioning plate, each expansion plate and the rear positioning plate are clamped by the stop parts in a pair of fixing holes.

[0013] In one embodiment of the thrombus protection umbrella expansion device, the stop portion is formed by welding in the fixing hole, or the stop portion is formed by detachably connecting a positioning post in the fixing hole.

[0014] In one embodiment of the thrombus protection umbrella expansion device, an opening groove is provided on the fixing rod, and the rear top plate can move back and forth along the fixing rod and can be engaged in the opening groove when it moves to a position aligned with the opening groove.

[0015] The thrombus protection umbrella expansion device provided in this application uses a front top plate and a rear top plate to fix the length of the thrombus protection umbrella, and uses positioning parts evenly spaced along the circumference of the expansion plate to position each thread of the thrombus protection umbrella. In this way, after expansion, the shape of each thread, the distance between each thread and the center line of the thrombus protection umbrella, and the interval angle between adjacent threads are basically the same. Therefore, the threads are evenly distributed, and a better thrombus interception effect can be achieved during use. Attached Figure Description

[0016] Figure 1 A perspective view of one embodiment of the thrombus protection umbrella dilation device provided in this application;

[0017] Figure 2 for Figure 1 A three-dimensional view of the expansion plate;

[0018] Figure 3 for Figure 2 An enlarged view of one of the positioning hooks;

[0019] Figure 4 A diagram illustrating the process of inserting a thrombus protection umbrella into an expansion device;

[0020] Figure 5 A diagram illustrating the process of inserting a thrombus protection umbrella into an expansion device;

[0021] Figure 6 A diagram illustrating the process of expanding the protective umbrella for blood clots;

[0022] Figure 7 A plan view of the thrombus protection umbrella after expansion and shaping.

[0023] The annotations in the attached figures are explained as follows:

[0024] 01 Thrombosis Protection Umbrella, 011 Lead Screw;

[0025] 100 Fixing part, 101 Fixing rod, 101a Fixing hole, 101b Opening groove, A Operating port;

[0026] 200 front top plate, 300 front positioning plate, 301 front positioning hole, B hollow hole, 400 expansion plate, 401 expansion hole, 402 positioning hook, 402a hook groove, 403 through hole, 500 rear positioning plate, 501 rear positioning hole, 600 rear top plate. Detailed Implementation

[0027] This application provides a thrombus protection umbrella dilation device. To enable those skilled in the art to better understand the technical solution of this application, the following description is provided in conjunction with the appendix. Figure 1-7 The technical solutions of this application will be further described in detail below with reference to specific embodiments.

[0028] like Figure 1As shown, the thrombus protection umbrella dilation device provided in this application includes at least: a fixing part 100, a front top plate 200, at least one dilation plate 400, and a rear top plate 600. The front top plate 200, dilation plate 400, and rear top plate 600 are arranged sequentially at intervals in the front-to-back direction, and all three are fixed to the fixing part 100. The rear top plate 600 is detachably connected to the fixing part 100. Specifically, the number of dilation plates 400 can be flexibly set as needed; it can be one, two, or more. When two or more dilation plates 400 are provided, they are arranged sequentially at intervals in the front-to-back direction, all located between the front positioning plate 300 and the rear positioning plate 500. The foremost dilation plate 400 is spaced apart from the front positioning plate 300, and the rearmost dilation plate 400 is spaced apart from the rear positioning plate 500.

[0029] like Figure 2 As shown, the expansion plate 400 has an expansion hole 401, through which the thrombus protection umbrella can be inserted and expanded. Multiple positioning parts for positioning the lead screws of the thrombus protection umbrella are evenly spaced along the circumference of the sidewall of the expansion hole 401. That is, the multiple positioning parts are equally spaced at 360° intervals around the circumference. For example, in the figure, the expansion plate 400 has six positioning parts, spaced 60° apart. Specifically, the number of positioning parts in the expansion plate 400 is designed according to the number of lead screws of the thrombus protection umbrella to be expanded, ensuring that each lead screw of the thrombus protection umbrella has at least one positioning part for positioning. For example, in the figure, the thrombus protection umbrella has 12 lead screws, and two expansion plates 400 are provided, each expansion plate 400 having 6 positioning parts, for a total of 12 positioning parts.

[0030] Specifically, in the illustrated embodiments, such as Figure 2 and Figure 3 As shown, the positioning part uses a positioning hook 402. One end of the positioning hook 402 is connected to the side wall of the expansion hole 401, and the other end of the positioning hook 402 forms a hook opening with the side wall of the expansion hole 401. The lead screw of the thrombus protection umbrella can enter the hook groove 402a of the positioning hook 402 through the hook opening. As a positioning part, the positioning hook 402 can easily hook the lead screw of the thrombus protection umbrella, thus simplifying operation and reducing the risk of damaging the lead screw of the thrombus protection umbrella. Of course, the positioning part is not limited to the positioning hook 402; for example, it can also be a positioning clamp.

[0031] When using, such as Figure 4 As shown, first remove the rear top plate 600 from the fixing part 100, then pass the thrombus protection umbrella to be expanded through the expansion holes 401 of each expansion plate 400 until the front end of the thrombus protection umbrella 01 presses against the front top plate 200 (as shown). Figure 5 (as shown), then as Figure 6 As shown, each lead screw 011 of the thrombus protection umbrella 01 is lifted (using tools such as tweezers) and placed into the hook groove 402a of the corresponding positioning hook 402. Then, the rear top plate 600 is re-fixed in the appropriate position of the fixing part 100. At this time, the rear end of the thrombus protection umbrella rests on the rear top plate 600. Under the pressure of the front top plate 200 and the rear top plate 600, the length of the thrombus protection umbrella is fixed. After checking that the lead screw of the thrombus protection umbrella is not twisted or deformed, it is heat-treated for shaping. After shaping, the expanded thrombus protection umbrella is removed from the expansion device. The expanded thrombus protection umbrella is as follows. Figure 7 As shown.

[0032] The aforementioned thrombus protection umbrella expansion device uses the front top plate 200 and the rear top plate 600 to fix the length of the thrombus protection umbrella, and uses the positioning parts evenly spaced along the circumference of the expansion plate 400 to position each thread rod of the thrombus protection umbrella. In this way, after expansion, the shape of each thread rod, the distance between each thread rod and the center line of the thrombus protection umbrella, and the interval angle between adjacent thread rods are basically the same. Therefore, the thread rods are evenly distributed, and a better thrombus interception effect can be achieved during use.

[0033] In some embodiments, multiple expansion plates 400 are provided, and the positioning hooks 402 of adjacent expansion plates 400 are staggered by a certain angle. For example... Figure 4 As shown, in this embodiment, the front expansion plate 400 and the rear expansion plate 400 have the same structure. The rear expansion plate 400 is rotated 90° circumferentially relative to the front expansion plate 400, so that the positioning hooks 402 of the front expansion plate 400 and the positioning hooks 402 of the rear expansion plate 400 are offset from each other by 30° circumferentially. By offsetting the positioning hooks 402 of adjacent expansion plates 400 by a certain angle, some positioning hooks 402 exert a clockwise force on the thrombus protection umbrella when viewed from the end of the expansion device, and some positioning hooks 402 exert a counterclockwise force on the thrombus protection umbrella. The two forces are balanced, preventing the thrombus protection umbrella from twisting circumferentially.

[0034] In some embodiments, such as Figure 1 As shown, the thrombus protection umbrella dilation device further includes a front positioning plate 300 and a rear positioning plate 500 fixed to the fixing part 100. The front positioning plate 300 is spaced between the front top plate 200 and the foremost dilation plate 400, that is, there is a certain gap between the front positioning plate 300 and the front top plate 200 and the foremost dilation plate 400. The rear positioning plate 500 is spaced between the rearmost dilation plate 400 and the rear top plate 600, that is, there is a certain gap between the rear positioning plate 500 and the rear top plate 600 and the rearmost dilation plate 400. The front positioning plate 300 is provided with a front positioning hole 301, and the rear positioning plate 500 is provided with a rear positioning hole 501. Figure 4As shown, during use, the thrombus protection umbrella passes sequentially through the rear positioning hole 501 of the rear positioning plate 500, the expansion hole 401 of the expansion plate 400, and the front positioning hole 301 of the front positioning plate 300, achieving radial positioning through the front positioning hole 301 and the rear positioning hole 501. This design further fixes the position of the thrombus protection umbrella, preventing uneven expansion of the screw rod due to changes in the radial position of the thrombus protection umbrella during expansion.

[0035] Specifically, in order to make the expansion device lighter overall, hollow holes B can be provided on the front positioning plate 300 and the rear positioning plate 500.

[0036] In some embodiments, such as Figure 1 As shown, the fixing part 100 includes multiple fixing rods 101 (four are shown in the figure, but it could also be two, three, or more than four). These fixing rods 101 are spaced apart and arranged around the front top plate 200, front positioning plate 300, each expansion plate 400, rear positioning plate 500, and rear top plate 600. An operating port A is formed between adjacent fixing rods 101, allowing the screw of the thrombus protection umbrella to be connected to or disconnected from the positioning part through the operating port A. This fixing part 100 provides operating space while ensuring reliable fixation around the front top plate 200, front positioning plate 300, each expansion plate 400, rear positioning plate 500, and rear top plate 600. Of course, the structure of the fixing part 100 is not limited to this; for example, it could also be a fixing plate located on the same side of the front top plate 200, front positioning plate 300, each expansion plate 400, rear positioning plate 500, and rear top plate 600.

[0037] Specifically, in order to make the expansion device lighter overall, the fixing rod 101 can adopt a tubular structure, that is, the fixing rod 101 is a hollow rod.

[0038] Specifically, in the illustrated embodiment, the front top plate 200, the front positioning plate 300, each expansion plate 400, and the rear positioning plate 500 are provided with multiple through holes 403 around their perimeters, through which they are fitted onto the outside of each fixing rod 101. Thus, before fixing the fixing rod 101 to the front top plate 200, the front positioning plate 300, each expansion plate 400, and the rear positioning plate 500, the front top plate 200, the front positioning plate 300, each expansion plate 400, and the rear positioning plate 500 can slide along the fixing rod 101, thereby easily adjusting them to a suitable position and allowing them to be pre-positioned by the fixing rod 101, facilitating subsequent fixing operations.

[0039] Specifically, in the illustrated embodiment, the fixing rod 101 has multiple pairs of fixing holes 101a spaced apart along the front-to-back direction for connecting the stop portions. The front top plate 200, the front positioning plate 300, each expansion plate 400, and the rear positioning plate 500 are each clamped by a stop portion (not shown in the figure) in a pair of fixing holes 101a. More specifically, the stop portion can be formed by welding in the fixing holes 101a, or it can be formed by detachably connecting positioning pins in the fixing holes 101a. In this way, the connection between the fixing rod 101 and the front top plate 200, the front positioning plate 300, each expansion plate 400, and the rear positioning plate 500 is relatively strong.

[0040] Specifically, in the illustrated embodiment, the fixing rod 101 is provided with an opening slot 101b. In use, the rear top plate 600 slides forward along the fixing rod 101 to align with the opening slot 101b and engages with it. After expansion, the rear top plate 600 slides backward along the fixing rod 101 and is detached from it. This design allows the rear top plate 600 to be quickly removed from and quickly reattached to the fixing rod 101, thus improving efficiency. Of course, the detachable connection between the fixing rod 101 and the rear top plate 600 is not limited to the aforementioned snap-fit ​​connection; for example, the rear top plate 600 can also be fitted onto the fixing rod 101 and locked with a nut screwed onto the fixing rod 101.

[0041] The above embodiments can be freely combined without conflict.

[0042] The above examples illustrate the principles and implementation methods of this application. The descriptions of the embodiments are merely for the purpose of helping to understand the methods and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A thrombus protection umbrella dilation device, characterized in that, The device includes a fixing part (100) and a front top plate (200), at least one expansion plate (400), and a rear top plate (600) that are fixed to the fixing part (100) and arranged sequentially and spaced apart in the front-rear direction. The rear top plate (600) is detachably connected to the fixing part (100). The front end and rear end of the thrombus protection umbrella can abut against the front top plate (200) and the rear top plate (600) to achieve a fixed length. The expansion plate (400) has an expansion hole (401). The thrombus protection umbrella can be inserted into the expansion hole (401) and can be expanded in the expansion hole (401). Multiple positioning parts for positioning the screw rods of the thrombus protection umbrella are arranged sequentially and evenly spaced along the circumferential direction on the side wall of the expansion hole (401).

2. The thrombus protection umbrella dilation device according to claim 1, characterized in that, The positioning part adopts a positioning hook (402). One end of the positioning hook (402) is connected to the side wall of the expansion hole (401), and the other end of the positioning hook (402) forms a hook opening with the side wall of the expansion hole (401). The lead screw of the thrombus protection umbrella can enter the hook groove of the positioning hook (402) through the hook opening.

3. The thrombus protection umbrella dilation device according to claim 2, characterized in that, Multiple expansion plates (400) are arranged at intervals along the front-to-back direction, and the positioning hooks (402) of adjacent expansion plates (400) are staggered by a certain angle.

4. The thrombus protection umbrella dilation device according to any one of claims 1-3, characterized in that, The expansion device includes a front positioning plate (300) and a rear positioning plate (500) fixed to the fixing part (100). The front positioning plate (300) is spaced between the front top plate (200) and the foremost expansion plate (400). The rear positioning plate (500) is spaced between the rearmost expansion plate (400) and the rear top plate (600). The front positioning plate (300) is provided with a front positioning hole (301), and the rear positioning plate (500) is provided with a rear positioning hole (501). The thrombus protection umbrella can be inserted into the front positioning hole (301) and the rear positioning hole (501) to achieve radial positioning.

5. The thrombus protection umbrella dilation device according to claim 4, characterized in that, The fixing part (100) includes multiple fixing rods (101), which are spaced apart from each other around the front top plate (200), the front positioning plate (300), each expansion plate (400), the rear positioning plate (500), and the rear top plate (600). An operating port (A) is formed between adjacent fixing rods (101), through which the lead screw of the thrombus protection umbrella can be connected to or disconnected from the positioning part.

6. The thrombus protection umbrella dilation device according to claim 5, characterized in that, The fixing rod (101) is a tubular structure, and the front positioning plate (300) and the rear positioning plate (500) are provided with hollow holes (B).

7. The thrombus protection umbrella dilation device according to claim 5, characterized in that, The front top plate (200), the front positioning plate (300), each expansion plate (400), and the rear positioning plate (500) are provided with multiple through holes (403) around their four edges, and are fitted through the through holes (403) to the outside of each fixing rod (101).

8. The thrombus protection umbrella dilation device according to claim 7, characterized in that, The fixing rod (101) is provided with a plurality of fixed holes (101a) for connecting the stop part in a sequentially spaced manner along the front-back direction. The front top plate (200), the front positioning plate (300), each expansion plate (400), and the rear positioning plate (500) are each clamped by the stop part in a pair of the fixed holes (101a).

9. The thrombus protection umbrella dilation device according to claim 8, characterized in that, The stop portion is formed by welding in the fixing hole (101a), or by detachably connecting a positioning post in the fixing hole (101a).

10. The thrombus protection umbrella dilation device according to claim 5, characterized in that, The fixing rod (101) is provided with an opening groove (101b). The rear top plate (600) can move back and forth along the fixing rod (101) and can be inserted into the opening groove (101b) when it moves to a position that aligns with the opening groove (101b).

Images