Vein filter screen recovery catcher

Abstract

The utility model discloses a vein filter screen recovery trapper which comprises a sleeve, and a sleeving assembly is arranged in the sleeve. The sleeving assembly comprises a hard guide wire, the hard guide wire is longer than the sleeve, and the bottom of the hard guide wire is spiral; a casing pipe is arranged in the sleeve, a lasso is arranged in the casing pipe, and the lasso forms a lantern ring at the bottom of the casing pipe. The hard guide wire is used for stripping the filter screen from the blood vessel wall, the problem that the filter screen is difficult to strip is solved, the hard guide wire can penetrate into any gap hole of the filter screen, a hook of the filter screen does not need to be hooked, and operation is easier. The ball body can enable the hard guide wire to rotate more smoothly, and the ball body can also prevent the end part of the hard guide wire from being hung on the inner wall of the blood vessel and being incapable of moving; and the ball body can also prevent the hard guide wire from being separated from the lantern ring.

Description

Technical Field

[0001] The utility model belongs to the technical field of venous filter recovery, in particular to a venous filter recovery catcher. Background Art

[0002] The venous thrombosis filter refers to the inferior vena cava filter, which is a filtering device that can intercept thrombi and other components in the veins, preventing the reflux of venous thrombi from causing serious consequences such as pulmonary embolism. It plays an important role in preventing serious complications caused by the detachment of venous thrombi.

[0003] A Chinese patent application (CN208710164U) discloses a vena cava filter and its retrieval device. The vena cava filter includes a filter screen and a retrieval hook, which is positioned at one end of the filter screen to retrieve the filter. The retrieval hook is equipped with a first magnet. The utility model provides a first magnet on the retrieval hook, and a retrieval device used with the vena cava filter is equipped with a second magnet that attracts the first magnet. When the retrieval device is used for retrieval, as long as the retrieval device is within a certain distance of the vena cava filter's retrieval hook, it quickly attracts the retrieval hook, automatically capturing the vena cava filter. This greatly simplifies the retrieval process and shortens the retrieval time, thereby reducing surgical time and minimizing harm to the patient.

[0004] like Figure 4 As shown, the current recovery capture device mainly uses a lasso to wrap around the hook of the venous filter and then pull it out. However, during the use of the venous filter, the hook on the venous filter is prone to scraping the vein wall and sticking to it, making it impossible to remove the venous filter. The soft lasso cannot wrap around the hook, making it very difficult to remove the venous filter. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the current recovery and capture device is difficult to operate in certain circumstances, and to propose a venous filter recovery and capture device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A venous filter recovery trap comprises a sleeve, wherein a sleeve collection component is arranged in the sleeve;

[0008] The sheathing assembly comprises a hard guide wire, which is longer than the sleeve and has a spiral bottom.

[0009] A sleeve is arranged in the sleeve, a noose is arranged in the sleeve, and the noose forms a loop at the bottom of the sleeve.

[0010] Furthermore, a sphere is provided at one spiral end of the hard guide wire.

[0011] Furthermore, a rotating handle is provided at the upper end of the hard guide wire.

[0012] Furthermore, an anti-slip cover is provided on the rotating handle.

[0013] Furthermore, the hard guide wire is made of titanium-nickel alloy.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. Use a hard guide wire to peel the filter from the blood vessel wall, solving the problem of the filter being difficult to peel off. Moreover, it can penetrate into any slit hole of the filter without hooking the hook of the filter, making the operation easier.

[0016] 2. The ball can make the rotation of the rigid guide wire smoother and prevent the end of the rigid guide wire 21 from getting caught on the inner wall of the blood vessel and being unable to move;

[0017] 3. The filter can be stored in the sleeve for easy removal to avoid scratching during the pulling process;

[0018] 4. The hard guide wire is made of titanium-nickel alloy and its shape can be restored after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the initial state of the utility model;

[0020] Figure 2 This is a schematic diagram of the utility model after the ring is wrapped around the sphere;

[0021] Figure 3 This is a schematic diagram of the utility model after the capture filter;

[0022] Figure 4 A schematic diagram of background technology.

[0023] Legend:

[0024] 1. Sleeve; 2. Sleeve assembly; 21. Hard guide wire; 211. Rotating handle; 22. Ball; 23. Sleeve; 24. Lasso; 25. Ring; 3. Filter. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-3 , the utility model provides a technical solution:

[0027] A venous filter recovery and capture device comprises a sleeve 1, wherein a sleeve collection component 2 is provided in the sleeve 1;

[0028] The sheathing assembly 2 includes a hard guide wire 21, which is longer than the sleeve 1, and the bottom of the hard guide wire 21 is spiral-shaped;

[0029] A sleeve 23 is provided in the sleeve 1 . The sleeve 23 is longer than the sleeve 1 . A noose 24 is provided in the sleeve 23 . The noose 24 forms a loop 25 at the bottom of the sleeve 23 .

[0030] The helical end of the rigid guide wire 21 is provided with a ball 22. The upper end of the rigid guide wire 21 is provided with a rotating handle 211. The rotating handle is provided with an anti-slip sleeve.

[0031] The hard guide wire 21 is made of titanium-nickel alloy and has shape recovery capability.

[0032] Its specific implementation is:

[0033] The bottom of the rigid guide wire 21 is normally in a spiral state. Therefore, when the rigid guide wire 21 is rotated and moved, the end of the rigid guide wire 21 will be continuously entangled in the gap of the filter screen. The presence of the ball can make the rotation of the rigid guide wire 21 smoother, and the ball can also prevent the end of the rigid guide wire 21 from getting caught on the inner wall of the blood vessel and being unable to move. After the rigid guide wire 21 penetrates the gap of the filter screen, it continues to rotate until the hook of the filter screen that is hanging on the inner wall of the blood vessel is separated from the inner wall of the blood vessel, and then the sleeve 23 is moved so that the ring 25 is wrapped around the ball 22, and then the rope 24 is pulled upward to move it upward relative to the sleeve 23, so that the ring 25 locks the ball 22, and the ball can also prevent the rigid guide wire from detaching from the ring; then the rigid guide wire 21 and the rope 24 are pulled upward together, and the rigid guide wire 21 will be straightened to a certain extent after being subjected to force, thereby facilitating the pulling of the filter screen 3 into the sleeve 1, thereby pulling the filter screen 3 into the sleeve 1. The filter 3 is stored in the sleeve 1, which is convenient for removal and avoids scratching during the pulling-out process.

[0034] The beneficial effects of the utility model are:

[0035] 1. Use a hard guide wire to peel the filter from the blood vessel wall, solving the problem of the filter being difficult to peel off. Moreover, it can penetrate into any slit hole of the filter without hooking the hook of the filter, making the operation easier.

[0036] 2. The ball can make the rotation of the rigid guide wire smoother and prevent the end of the rigid guide wire 21 from getting caught on the inner wall of the blood vessel and being unable to move; and the ball can also prevent the rigid guide wire from detaching from the ring;

[0037] 3. The filter can be stored in the sleeve for easy removal to avoid scratching during the pulling process;

[0038] 4. The rigid guide wire 21 is made of titanium-nickel alloy and its shape can be restored after use.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A venous filter recovery trap, comprising a sleeve (1), characterized in that: A sleeve removal component (2) is provided in the sleeve (1); The sheathing assembly (2) comprises a hard guide wire (21), the hard guide wire is longer than the sleeve (1), and the bottom of the hard guide wire (21) is spiral-shaped; A sleeve (23) is provided in the sleeve (1), a noose (24) is provided in the sleeve (23), and the noose (24) forms a loop (25) at the bottom of the sleeve (23).

2. A venous filter recovery trap according to claim 1, characterized in that: A sphere (22) is provided at one helical end of the hard guide wire (21).

3. A venous filter recovery trap according to claim 1, characterized in that: The upper end of the hard guide wire (21) is provided with a rotating handle (211).

4. A venous filter recovery trap according to claim 3, characterized in that: An anti-slip cover is provided on the rotating handle.

5. A venous filter recovery trap according to claim 1, characterized in that: The hard guide wire (21) is made of titanium-nickel alloy.

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