CN221060957U - Thrombus filter and filter assembly - Google Patents
Thrombus filter and filter assembly Download PDFInfo
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- CN221060957U CN221060957U CN202321915855.8U CN202321915855U CN221060957U CN 221060957 U CN221060957 U CN 221060957U CN 202321915855 U CN202321915855 U CN 202321915855U CN 221060957 U CN221060957 U CN 221060957U
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- nut
- hook
- filter
- recovery
- thrombus
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 67
- 238000011084 recovery Methods 0.000 claims description 55
- 238000000034 method Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003191 femoral vein Anatomy 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a thrombus filter and a filter assembly, wherein the thrombus filter comprises: the filter screen is provided with a first end part and a second end part along the two ends of the X direction respectively, and the first end part and the second end part are tubular; a first nut disposed inside the first end portion along the X direction; and a second nut provided inside the second end portion along the X direction. The technical scheme provided by the utility model can realize simple operation by combining the external conveying component, and accurately place the thrombus filter at a preset position.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a thrombus filter and a filter assembly.
Background
In thrombus removal procedures, a thrombus filter is used to filter and chop thrombus to prevent it from causing pulmonary embolism. Prior to surgery, a thrombus filter needs to be placed at a preset location inside the patient's body. In general, a catheter is inserted into the body of a patient in advance, and then a thrombus filter is placed in the body of the patient through the catheter, and after the thrombus filter passes through the catheter, the position of the thrombus filter cannot be controlled any more, so that the operation requirement is high, otherwise, the phenomenon that the position of the excrement is deviated or does not reach a designated position occurs, and the thrombus removal effect cannot be achieved.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of utility model
It is an object of an embodiment of the present application to provide a thrombus filter and filter assembly.
According to a first aspect of an embodiment of the present application, there is provided a thrombus filter comprising:
The filter screen is provided with a first end part and a second end part along the two ends of the X direction respectively, and the first end part and the second end part are tubular;
a first nut disposed inside the first end portion along the X direction;
and a second nut provided inside the second end portion along the X direction.
Optionally, the second end is formed with a hook, the second nut is near the first end, and the hook is far away from the first end.
Optionally, the inner wall of the hook is semicircular.
Optionally, grooves are formed in two sides of the hook, and the cross section of each groove is semicircular.
According to a second aspect of an embodiment of the present application, there is provided a filter assembly comprising:
the thrombus filter described above;
A delivery guidewire connectable with the first nut or the second nut.
Optionally, the end of the delivery guide wire is provided with a bolt, and the delivery guide wire is connected with the first nut or the second nut through the bolt.
Optionally, an external thread is formed on a side wall of the delivery guide wire, and the delivery guide wire is connected with the first nut or the second nut through the external thread.
Optionally, the filter assembly further comprises a recovery guide wire and a recovery hook, the recovery hook being provided at an end of the recovery guide wire, the recovery hook being connectable with the hook of the second end.
Optionally, the filter assembly further comprises a catheter through which the delivery guidewire passes, the delivery guidewire being connected with the first nut or the second nut; the recovery guide wire and the recovery hook pass through the catheter, and the recovery hook is connected with the hook.
Optionally, the recovery hook is a ring surrounded by a wire, and the diameter of the wire is smaller than the diameter of the groove on the hook.
The first nut and the second nut are arranged, so that the thrombus filter can be in threaded connection with the external conveying component, the external conveying component is used for controlling the thrombus filter to reach a preset position, and after the thrombus filter reaches the preset position, the external conveying component is separated from the first nut or the second nut to finish the release of the thrombus filter, so that the thrombus filter is easy to operate and can be accurately placed at the preset position.
Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic view showing the structure of a thrombus filter in an embodiment of the present application;
FIG. 2 is a cross-sectional view of A-A of FIG. 1;
FIG. 3 is an enlarged view at C of FIG. 2;
Fig. 4 is an enlarged view at B of fig. 2;
FIG. 5 is a schematic view of a filter assembly according to an embodiment of the present application;
FIG. 6 is a schematic view of the structure of the second end and the recovery hook in an embodiment of the present application;
Fig. 7 is a schematic view of a filter assembly according to an embodiment of the present application.
Reference numerals illustrate: a thrombus filter 100; a filter screen 1; a first end 11; a first opening 111; a second end 12; a hook 121; a second opening 122; a first nut 13; a second nut 14; a groove 15; a filter assembly 200; a delivery guidewire 21; an external thread 22; recovering the guide wire 23; a recovery hook 24; a conduit 25.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
According to a first aspect of an embodiment of the present application, there is provided a thrombus filter 100 comprising:
A filter screen 1, wherein a first end 11 and a second end 12 are respectively formed at two ends of the filter screen 1 along the X direction, and the first end 11 and the second end 12 are tubular;
A first nut 13, the first nut 13 being disposed inside the first end 11 along the X direction;
A second nut 14, the second nut 14 being disposed inside the second end 12 along the X-direction.
As shown in fig. 1, 2, 3 and 4, both ends of the filter screen 1 in the X direction are formed with a first end 11 and a second end 12, respectively.
As shown in fig. 1, 2 and 3, the first end 11 is tubular, the first nut 13 is disposed in the tube of the first end 11, the outer wall of the first nut 13 is adhered to the inner wall of the tube of the first end 11 and is fixed inside, the first nut 13 and the first end 11 may be in an interference fit manner or may be in an adhesive manner, as long as the first nut 13 can be fixed inside the first end 11, preferably, an adhesive manner is adopted, so that the first nut 13 and the first end 11 maintain a good fixed relationship and are not affected by the material of the filter screen 1. According to the X direction shown in fig. 2, the first end 11 has a first opening 111 at the left side, the axis of the first nut 13 is the X direction, and the external connection conveying member can be connected to the first nut 13 through the first opening 111. In the embodiment of the present application, the first nut 13 is provided in the tube of the first end portion 11, and the size of the thrombus filter 100 does not need to be increased, so that the increase in the size of the thrombus filter 100 due to the increase in the number of components can be prevented from affecting the body of the patient.
As shown in fig. 1, 2 and 4, the second end 12 is tubular, the second nut 14 is disposed in the tube of the second end 12, the outer wall of the second nut 14 is adhered to the inner wall of the tube of the second end 12 and is fixed inside, and the second nut 14 and the second end 12 may be in an interference fit manner or may be in an adhesive manner, so long as the second nut 14 can be fixed inside the second end 12. Preferably, the second nut 14 and the second end 12 are kept in good fixed relation by adopting an adhesive mode, and the second nut is not influenced by the material of the filter screen 1. According to the X direction shown in fig. 2, the second end 12 has a second opening 122 at the right side, the axis of the second nut 14 is the X direction, and the external connection conveying member can be connected to the second nut 14 through the second opening 122. In the embodiment of the present application, the second nut 14 is provided in the tube of the second end portion 12, and the size of the thrombus filter 100 does not need to be increased, so that the increase in the size of the thrombus filter 100 due to the increase in the number of components can be prevented from affecting the body of the patient.
Further, the filter screen 1 is generally made of a memory alloy, after the filter screen 1 is placed in a patient, the filter screen will deform due to body temperature, and the first nut 13 and the second nut 14 are made of materials with higher stability, so that the first nut 13 and the second nut 14 are not affected, and the reliability of connection with an external conveying component and the first nut 13 or the second nut 14 is ensured.
Specifically, the external transmission member may be connected to the first nut 13 to place the thrombus filter 100 inside the body of the patient, and the external transmission member may be connected to the second nut 14 to place the thrombus filter 100 inside the body of the patient. The external connection conveying component can be selected to be connected with the first nut 13 or the second nut 14 according to actual conditions.
Further, prior to surgery, the thrombus filter 100 needs to be placed at a predetermined location inside the patient's body. In general, the catheter 25 is first delivered to the vena cava through the femoral vein, the thrombus filter 100 is pushed into the vena cava through the catheter 25 by the pusher, and if the thrombus filter 100 is to be delivered to a predetermined location, the position of the catheter 25 is required to be more accurate, the accuracy required for pushing the thrombus filter 100 is required, otherwise, the thrombus filter 100 may not reach the predetermined location.
In the embodiment of the present application, the first nut 13 is provided at the first end 11, and the external connection conveying member is connected to the first nut 13. The thrombus filter 100 is controlled to reach a preset position by the external conveying component, and after reaching the preset position, the external conveying component and the first nut 13 are loosened, the external conveying component is pulled out, and the operation of releasing the thrombus filter 100 is completed, so that the thrombus filter device is simple to operate and can be accurately placed at the preset position.
The second nut 14 of the second end portion 12 may be connected to an external transmission member, and may be sent to a predetermined position. The operation is the same as described above.
Optionally, the second end 12 is formed with a hook 121, the second nut 14 is close to the first end 11, and the hook 121 is far from the first end 11.
As shown in fig. 2, a hook 121 is formed at the second end 12, and when the thrombus filter 100 according to the embodiment of the present application is recovered, the thrombus filter 100 can be smoothly introduced into the recovery conduit 25 by connecting the hook 121 with an external recovery member, and recovery of the thrombus filter 100 can be completed without requiring complicated operation techniques and additional equipment. In this way, the recovery efficiency and recovery success rate of the thrombus filter 100 are improved, and the treatment cost is reduced. And the thrombus filter 100 has a simple overall structure and is easy to operate.
As shown in fig. 2, the second nut 14 is located near the first end 11 inside the second end 12, and the hook 121 is located far from the first end 11, and a certain distance exists between the second nut 14 and the hook 121, so that no influence is generated between the second nut 14 and the hook 121.
Alternatively, the inner wall of the hook 121 is semicircular.
As shown in fig. 2, the inner wall of the hook 121 is semicircular in shape, and the recovery hook 24 is adapted to the shape of the inner wall of the hook 121, so that the recovery hook 24 and the hook 121 can be clamped together when the thrombus filter 100 is recovered, thereby facilitating recovery of the thrombus filter 100.
Optionally, grooves 15 are formed on two sides of the hook 121, and the cross section of the groove 15 is semicircular.
As shown in fig. 6, by providing the grooves 15 in both sides of the hook 121, when the thrombus filter 100 is recovered, the recovery hook 24 is caught with the hook 121, and at the same time, a part of the recovery hook 24 is trapped in the groove 15, so that the recovery of the thrombus filter 100 is prevented from being affected by the protrusion of the recovery hook 24 from both sides of the hook 121.
As shown in fig. 6, the cross-section of the groove 15 is semicircular, wherein the shape of the recovery hook 24 is matched with the cross-section of the groove 15, so that the recovery hook 24 is completely trapped in the groove 15 when the thrombus filter 100 is recovered, and the recovery of the thrombus filter 100 is not affected.
According to another embodiment of the present application, there is provided a filter assembly 200 comprising:
a thrombus filter 100;
A delivery guidewire 21, said delivery guidewire 21 being connectable with said first nut 13 or said second nut 14.
Specifically, the delivery guidewire 21 is an external delivery member.
As shown in fig. 7, the filter assembly 200 further includes a delivery guide wire 21, where the delivery guide wire 21 is connected to the first nut 13 or the second nut 14, for controlling the thrombus filter 100 to be delivered to a preset location, and then the delivery guide wire 21 is rotated to unscrew and separate the delivery guide wire 21 from the first nut 13 or the second nut 14, and then the delivery guide wire 21 is withdrawn, so that the operation precision requirement is low, the adjustability is high, and the operation is simple.
Optionally, the end of the delivery guide wire 21 has a bolt, and the delivery guide wire 21 is connected to the first nut 13 or the second nut 14 by the bolt.
Further, a bolt (not shown) is provided at the end of the delivery guide wire 21, wherein the bolt may be connected to the delivery guide wire 21 or may be integrally formed. After the thrombus filter 100 is sent to a preset position through the connection of the bolt and the first nut 13 or the second nut 14, the bolt is unscrewed and separated from the first nut 13 or the second nut 14, and then the conveying guide wire 21 is withdrawn, so that the operation precision requirement is lower, the adjustability is higher, and the operation is simpler.
Optionally, an external thread 22 is formed on a side wall of the delivery guide wire 21, and the delivery guide wire 21 is connected to the first nut 13 or the second nut 14 through the external thread 22.
As shown in fig. 7, an external thread is formed on the side wall of the end portion of the delivery guidewire 21. The thrombus filter 100 is connected with the first nut 13 or the second nut 14 through the external thread 22, and after being sent to a preset position, the conveying guide wire 21 is unscrewed and separated from the first nut 13 or the second nut 14, and then the conveying guide wire 21 is withdrawn, so that the operation precision requirement is low, the adjustability is high, and the operation is simple.
Optionally, the filter assembly 200 further comprises a recovery guide wire 23 and a recovery hook 24, the recovery hook 24 being provided at an end of the recovery guide wire 23, the recovery hook 24 being connectable with the hook 121 of the second end 12.
Optionally, the filter assembly 200 further comprises a conduit 25, the delivery guidewire 21 and the bolt passing through the conduit 25, the bolt being connected to the first nut 13 or the second nut 14; the recovery guide wire 23 and the recovery hook 24 pass through the catheter 25, and the recovery hook 24 is connected with the hook 121.
Further, when releasing the thrombus filter 100, it is necessary to insert the catheter 25 into the body of the patient in advance, the first nut 13 is connected to the screw bolt or the external screw thread 22 on the delivery guide wire 21, the thrombus filter 100 is pushed to a predetermined position by the delivery guide wire 21 through the catheter 25 inserted in advance, after reaching the predetermined position, the thrombus filter 100 is released to be opened, then the distal end of the delivery guide wire 21 is rotated to loosen the first nut 13 from the screw bolt or the external screw thread 22, and then the delivery guide wire 21 is withdrawn, so that the thrombus filter is easy to operate and can be accurately placed at the predetermined position.
Further, when the thrombus filter 100 is released, the delivery guide wire 21 may be connected to the second nut 14, and the implementation procedure is the same as that of the first nut 13, so that the description thereof will not be repeated.
As shown in fig. 5, when the thrombus filter 100 is to be recovered, it is necessary to insert a catheter 25 into the body of the patient in advance, to penetrate a recovery guide wire 23 into the catheter 25, to provide a recovery hook 24 at the tip of the recovery guide wire 23, to release the catheter 25 when the recovery guide wire 23 passes through the catheter 25 and reaches the vicinity of the thrombus filter 100 by the previously inserted catheter 25, to rotate the recovery guide wire 23, to allow the recovery hook 24 to be freely rotated by rotating the recovery guide wire 23, to allow the recovery guide wire 23 to be pulled out from the outside of the catheter 25 by being fitted over the hook 121 (the above operation is observed by X-rays), to allow the hook 121 to be caught by the recovery hook 24, to complete recovery of the thrombus filter 100 into the catheter 25 by driving the catheter 25 to move, and to finally to withdraw the catheter 25 together, thereby completing the operation.
Optionally, the recovery hook 24 is a ring surrounded by a wire having a diameter smaller than the diameter of the groove 15 on the hook 121.
As shown in fig. 6, the diameter of the wire is smaller than the diameter of the groove 15 so that the wire can fall completely into the groove 15, reducing the overall outer diameter of the retrieval guidewire 23 and catheter 25; the limit function of the recovery hook 24 can be realized through the groove 15, and the recovery hook 24 is prevented from falling off from the hook 121.
While certain specific embodiments of the application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.
Claims (10)
1. A thrombus filter, comprising:
The filter screen is provided with a first end part and a second end part along the two ends of the X direction respectively, and the first end part and the second end part are tubular;
a first nut disposed inside the first end portion along the X direction;
and a second nut provided inside the second end portion along the X direction.
2. The thrombus filter of claim 1 wherein the second end is formed with a hook, the second nut being proximal to the first end, the hook being distal to the first end.
3. The thrombus filter of claim 2 wherein the inner wall of the hook is semi-circular.
4. The thrombus filter of claim 2 wherein grooves are formed in both sides of the hooks, and the grooves are semicircular in cross section.
5. A filter assembly, comprising:
The thrombus filter according to any one of claims 1-4;
A delivery guidewire connectable with the first nut or the second nut.
6. The filter assembly of claim 5, wherein an end of the delivery guidewire has a bolt, the delivery guidewire being connected to the first nut or the second nut by the bolt.
7. The filter assembly of claim 5, wherein the delivery guidewire has external threads formed on a sidewall thereof, the delivery guidewire being coupled to the first nut or the second nut by the external threads.
8. The filter assembly of claim 5, further comprising a recovery guide wire and a recovery hook disposed at an end of the recovery guide wire, the recovery hook being connectable with a hook of the second end.
9. The filter assembly of claim 8, further comprising a conduit through which the delivery guidewire passes, the delivery guidewire being connected to the first nut or the second nut; the recovery guide wire and the recovery hook pass through the catheter, and the recovery hook is connected with the hook.
10. The filter assembly of claim 8, wherein the recovery hook is annular surrounded by a wire having a diameter less than a diameter of the groove on the hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321915855.8U CN221060957U (en) | 2023-07-18 | 2023-07-18 | Thrombus filter and filter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321915855.8U CN221060957U (en) | 2023-07-18 | 2023-07-18 | Thrombus filter and filter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221060957U true CN221060957U (en) | 2024-06-04 |
Family
ID=91264423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321915855.8U Active CN221060957U (en) | 2023-07-18 | 2023-07-18 | Thrombus filter and filter assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221060957U (en) |
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2023
- 2023-07-18 CN CN202321915855.8U patent/CN221060957U/en active Active
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