CN221060956U - Thrombus filter and filter assembly - Google Patents
Thrombus filter and filter assembly Download PDFInfo
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- CN221060956U CN221060956U CN202321901628.XU CN202321901628U CN221060956U CN 221060956 U CN221060956 U CN 221060956U CN 202321901628 U CN202321901628 U CN 202321901628U CN 221060956 U CN221060956 U CN 221060956U
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- filter
- connecting rod
- guide
- catheter
- recovery
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 83
- 238000011084 recovery Methods 0.000 claims description 66
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Abstract
The embodiment of the application provides a thrombus filter and a filter assembly. The thrombus filter comprises a filter body and a connecting rod, wherein the filter body forms a filter screen, the connecting rod is connected with one end of the filter screen, a hook is formed on the connecting rod, and a guide protrusion protruding out of the end face of the connecting rod is formed at one end of the connecting rod, deviating from the filter screen.
Description
Technical Field
The utility model 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. After a set time from the end of the operation, the thrombus filter needs to be removed from the patient's body. Typically, the proximal end of the thrombus filter has a hook. The guide wire is adopted to hang the hook and pulled so as to be convenient for accommodating the thrombus filter in the recovery catheter positioned at the proximal end side of the thrombus filter. However, the hooks are easy to deflect in the process of being pulled by the guide wires, so that the hooks cannot enter the recovery catheter, and the thrombus filter is difficult to recover.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of utility model
It is an object of the present utility model to provide a novel solution for a thrombus filter and filter assembly.
According to a first aspect of the present utility model, there is provided a thrombus filter, wherein the thrombus filter comprises:
a filter body forming a filter screen;
The connecting rod, the connecting rod with the one end of filter screen is connected, the connecting rod is formed with the couple the one end of connecting rod deviate from the filter screen form protruding in the guide of the terminal surface of connecting rod is protruding.
Optionally, the guide protrusion is a hemispherical protrusion or a conical protrusion.
Optionally, the guide protrusion is a conical protrusion, and an angle of a vertex angle of the conical protrusion is 30 ° -160 °.
Optionally, the guide protrusion is detachably connected with the connection rod.
Optionally, the connecting rod is tubular, the connecting rod has an internal thread, the guide protrusion has an external thread, and the connecting rod is in threaded connection with the guide protrusion.
According to a second aspect of the present utility model there is provided a filter assembly comprising a thrombus filter as in any one of the first aspects.
Optionally, a retrieval catheter is included, the retrieval catheter having a distal end, the retrieval catheter having an inner diameter greater than an outer diameter of the connecting rod, the thrombus filter being received within the retrieval catheter, the guide projection being capable of forming a sliding fit with the distal end of the retrieval catheter.
Optionally, the catheter further comprises a guide ring arranged at the distal end of the recovery catheter, and a chamfer is formed on the inner side of the opening of the guide ring.
Optionally, the guide ring has an inner diameter greater than an outer diameter of the connecting rod.
Optionally, the catheter further comprises a guide catheter, the recovery catheter is sleeved outside the guide catheter, and the distal end of the guide catheter is configured to abut against the guide protrusion.
According to one embodiment of the utility model, a guide projection protruding from the end face of the connecting rod is formed at the end of the connecting rod facing away from the filter screen. The guide protrusion can provide a guiding function for the thrombus filter, so that the thrombus filter can smoothly enter the recovery catheter, and the thrombus filter can be recovered without complex operation technology and extra equipment. By the mode, the recovery efficiency and the recovery success rate of the thrombus filter are improved, and the treatment cost is reduced. And the thrombus filter has simple integral structure and easy operation.
Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, 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 utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a schematic diagram of a filter assembly in one embodiment of the utility model.
Fig. 2 is a schematic view of a filter assembly in another embodiment of the utility model.
Fig. 3 is a schematic view of the structure of the thrombus filter in one embodiment of the present utility model upon recovery.
FIG. 4 is a schematic view showing a recovery state of the thrombus filter in one embodiment of the present utility model.
FIG. 5 is a schematic view showing a recovery state of a thrombus filter according to another embodiment of the present utility model.
FIG. 6 is a schematic view of a thrombus filter and recovery catheter according to one embodiment of the present utility model.
Fig. 7 is a schematic view of the structure of the recovery conduit in one embodiment of the utility model.
Reference numerals illustrate:
1. A filter screen; 2. a connecting rod; 21. a hook; 3. a guide protrusion; 31. hemispherical protrusions; 32. conical protrusions; 4. a guide catheter; 5. a recovery conduit; 6. a guide wire; 7. a guide ring; 71. chamfering.
Detailed Description
Various exemplary embodiments of the present utility model 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 utility model 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 utility model, 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.
The technical scheme disclosed by each embodiment of the application is described in detail below with reference to the accompanying drawings.
According to one embodiment of the present application, a thrombus filter is provided. Referring to fig. 1 to 5, the thrombus filter comprises a filter body and a connecting rod 2, wherein the filter body forms a filter screen 1, the connecting rod 2 is connected with one end of the filter screen 1, the connecting rod 2 is provided with a hook 21, and one end of the connecting rod 2, which is far away from the filter screen 1, is provided with a guide protrusion 3 protruding out of the end surface of the connecting rod 2.
Specifically, in the thrombus filter provided by the embodiment of the application, the guide protrusion 3 protruding out of the end surface of the connecting rod 2 is formed at one end of the connecting rod 2 away from the filter screen 1. The guide protrusion 3 can provide a guiding function for the thrombus filter, so that the thrombus filter can smoothly enter the recovery catheter, and the recovery of the thrombus filter can be completed without complex operation technology and additional equipment. By the mode, the recovery efficiency and the recovery success rate of the thrombus filter are improved, and the treatment cost is reduced. And the thrombus filter has a simple integral structure and is easy to operate.
In addition, the arrangement of the guide protrusion 3 effectively avoids the damage of the hook 21 or the scratch of the recovery conduit 5 caused by the offset or inclination of the filter body when the thrombus filter is recovered, and the incomplete recovery of the thrombus filter.
According to the embodiment of the application, through the arrangement of the guide protrusion 3, the interference of the hook 21 on the recovery process of the recovery catheter 5 is effectively avoided, so that the recovery of the thrombus filter can be successfully completed, the risk of operation is greatly reduced, and the treatment cost is reduced.
The filter screen 1 of the thrombus filter provided by the embodiment of the application can be a spindle-shaped structure or an umbrella-shaped structure which is formed by cutting memory metal through laser. The connecting rod is connected with one end of the filter screen, and can be in a connecting mode of fixed connection, bonding, threaded connection and the like.
Alternatively, as shown in fig. 1 or 2, the guide protrusion 3 may be a hemispherical protrusion 31 or a conical protrusion 32.
Specifically, the embodiment of the present application is configured by the hemispherical protrusion 31 or the conical protrusion 32, so that the filter body 1 and the recovery catheter 5 may not be in a coaxial state when the thrombus filter is recovered, i.e., the thrombus filter body may be biased (as shown in fig. 4 a) or in an inclined (as shown in fig. 5B) state.
Due to the guiding action of the hemispherical protrusions 31 or the conical protrusions 32, the thrombus filter can first complete the change of the posture at the time of recovery, i.e., the thrombus filter in an abnormal state is adjusted to a normal recovery state and then recovered. By the mode, operation difficulty of surgery is greatly reduced, and recovery efficiency and recovery success rate of the thrombus filter are improved.
The hemispherical protrusion 31 is not limited to a half of a sphere, and may be a segment larger than a half of a sphere or smaller than a half of a sphere, or may be a part of an irregular sphere, so long as guidance during recovery of the thrombus filter can be achieved, and the present application is not particularly limited herein.
Alternatively, as shown in FIG. 2, the angle of the apex angle of the conical protrusion 32 is 30-160. The angle of the apex angle of the conical protrusion 32 is 30-160 degrees, the guiding effect is better, and the recovery efficiency of the thrombus filter is higher.
Alternatively, as shown in fig. 1 or 2, the guide protrusion 3 is detachably connected with the connection rod 2.
In the embodiment of the application, the guide protrusion 3 is detachably connected with the connecting rod 2, so that a proper thrombus filter can be selected according to medical planning made in advance, the universality of the thrombus filter is improved, the operation efficiency is improved, and the operation risk is reduced.
Optionally, the connecting rod 2 is tubular, the connecting rod 2 has an internal thread, the guide protrusion 3 has an external thread, the connecting rod 2 is in threaded connection with the guide protrusion 3, and a rubber ring is arranged between the guide protrusion 3 and the connecting rod 2.
Specifically, the embodiment of the application simplifies the structure of the thrombus filter by the threaded connection of the connecting rod 2 and the guide protrusion 3, so that the thrombus filter is more convenient to use and assemble, and the service efficiency of the thrombus filter is greatly improved.
Of course, the manner of releasable connection is not limited to threaded connection. Connection modes such as plugging, buckling connection and the like can also be adopted.
Optionally, a rubber ring is arranged between the guide protrusion 3 and the connecting rod 2.
Specifically, in the embodiment of the application, the rubber ring is arranged between the guide protrusion 3 and the connecting rod 2, so that the guide protrusion 3 and the connecting rod 2 are effectively prevented from falling off, and the stability and reliability of the thrombus filter in use are improved.
According to another embodiment of the present application, there is provided a filter assembly comprising a thrombus filter of an embodiment of the present application.
Alternatively, as shown in fig. 1 to 6, the filter assembly comprises a recovery catheter 5, the recovery catheter 5 having a distal end, the recovery catheter 5 having an inner diameter larger than the outer diameter of the connecting rod 2, the thrombus filter being received within the recovery catheter 5, the guide projections 3 being capable of forming a sliding fit with the distal end of the recovery catheter 5.
Specifically, when the thrombus filter according to the embodiment of the present application is recovered, once the thrombus filter body is offset (as shown in fig. 4 a) or inclined (as shown in fig. 5B), the guide protrusion 3 of the thrombus filter contacts the inner wall surface of the distal end of the recovery catheter 5 and slides on the inner wall surface of the distal end of the recovery catheter 5. The guide protrusion 3 can provide guidance for the thrombus filter in the sliding process, so that the posture of the thrombus filter can be adjusted. Finally, the recovery of the thrombus filter is completed by driving the recovery catheter 5 from the proximal end to the distal end.
In this way, the thrombus filter can be recovered without complex operation technology and extra equipment, so that the recovery efficiency and recovery success rate of the thrombus filter are improved, and the treatment cost is reduced. And the thrombus filter has a simple integral structure and is easy to operate.
In addition, in the embodiment of the application, the guide protrusion 3 is in sliding fit with the distal end of the recovery catheter 5, so that the defect that the hook 21 damages or scratches the recovery catheter 5 to recover the thrombus filter due to the offset or inclination of the filter body during recovery of the thrombus filter is effectively avoided.
According to the embodiment of the application, the guide protrusion 3 is in sliding fit with the distal end of the recovery catheter 5, so that interference of the hook 21 on the recovery process of the recovery catheter 5 is effectively avoided, the risk of operation is reduced, and the treatment cost is reduced.
It should be noted that, the proximal end in the embodiment of the present application refers to an end close to the operator, and the distal end refers to an end far away from the operator.
Optionally, as shown in fig. 6 and 7, the filter assembly further comprises a guide ring 7, the guide ring 7 being disposed at the distal end of the recovery catheter 5, a chamfer 71 being formed inside the opening of the guide ring 7.
Specifically, in the embodiment of the present application, by disposing the guide ring 7 at the distal end of the recovery catheter 5, the chamfer 71 is formed inside the opening of the guide ring 7, so that the guide ring 7 can guide the thrombus filter when the thrombus filter is recovered, so that the connecting rod 2 can smoothly enter the recovery catheter 5, and further, the recovery efficiency of the thrombus filter can be improved.
Wherein the chamfer 71 may be an arc angle. The arc angle enables the guide ring 7 to be in smooth sliding contact with the connecting rod 2, so that the use effect is better. Of course, the chamfer 71 may be a bevel.
Alternatively, as shown in fig. 7, the inner diameter of the guide ring 7 is larger than the outer diameter of the connecting rod 2. For example, the guide ring is circular, and the connecting rod is cylindrical. The arrangement mode ensures that the thrombus filter has higher recovery stability and reliability in the recovery process.
Optionally, as shown in fig. 1 to 5, the filter assembly further comprises a guide catheter 4, the recovery catheter 5 is sleeved outside the guide catheter 4, and the distal end of the guide catheter 4 is configured to abut against the guide protrusion 3.
Specifically, in the embodiment of the present application, the inner diameter of the guide catheter 4 is smaller than the outer diameter of the connecting rod 2. In use, the guidewire 6 is passed through the guide catheter 4. The operator pulls the guide wire 6 and pushes the guide catheter 4 so that the distal end of the guide catheter 4 can abut against the guide projection 3. In this way, the guide duct 4 and the connecting rod 2 are integrated, the guide duct 4 forms a guiding action on the connecting rod 2, so that the pulling force of the guide wire 6 on the connecting rod 2 is consistent with the axial direction of the guide duct 4 and the axial direction of the connecting rod 2 and the axial direction of the guide duct 4. Since the guide duct 4 is located in the recovery duct 5, the connecting rod 2 can enter the recovery duct 5 together with the guide duct 4.
In the embodiment of the application, the distal end of the guide catheter 4 abuts against the guide protrusion 3, so that the guide catheter 4 can guide the thrombus filter first when the thrombus filter is recovered, and the recovery efficiency of the thrombus filter is further improved.
Alternatively, as shown in fig. 1 to 5, the guide wire 6 passes through the guide catheter 4 and is hung on the hanger 21.
Specifically, when the thrombus filter according to the embodiment of the present application is recovered, the thrombus filter can be pulled through the guide wire 6 so that the distal end of the guide catheter 4 abuts against the guide projection 3, and the posture of the thrombus filter can be further adjusted by pulling the guide wire 6, that is, the thrombus filter is coaxial with the guide catheter 4.
Thereby, the damage or scratch of the hook 21 to the recovery catheter 5 is effectively avoided, that is, the interference of the hook 21 to the recovery process of the recovery catheter 5 is effectively avoided, the risk of operation is reduced, and the treatment cost is reduced.
The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.
While certain specific embodiments of the utility model 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 utility model. 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 utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. A thrombus filter, comprising:
a filter body forming a filter screen (1);
Connecting rod (2), connecting rod (2) with the one end of filter screen (1) is connected, connecting rod (2) are formed with couple (21) one end of connecting rod (2) deviate from filter screen (1) form protrusion in guide protrusion (3) of the terminal surface of connecting rod (2).
2. Thrombus filter according to claim 1, characterized in that the guide projections (3) are hemispherical projections (31) or conical projections (32).
3. Thrombus filter according to claim 1, characterized in that said guiding protuberance (3) is a conical protuberance (32), the angle of the apex angle of said conical protuberance (32) being 30 ° -160 °.
4. Thrombus filter according to claim 1, characterized in that said guide projection (3) is removably connected to said connecting rod (2).
5. Thrombus filter according to claim 4, characterized in that the connecting rod (2) is tubular, the connecting rod (2) has an internal thread, the guide projection (3) has an external thread, and the connecting rod (2) is screwed with the guide projection (3).
6. A filter assembly comprising a thrombus filter as in any one of claims 1-5.
7. The filter assembly according to claim 6, comprising a recovery catheter (5), the recovery catheter (5) having a distal end, the recovery catheter (5) having an inner diameter larger than the outer diameter of the connecting rod (2), the thrombus filter being received within the recovery catheter (5), the guide projection (3) being capable of forming a sliding fit with the distal end of the recovery catheter (5).
8. The filter assembly of claim 7, further comprising a guide ring (7), the guide ring (7) being disposed at the distal end of the recovery catheter (5), a chamfer (71) being formed inside the opening of the guide ring (7).
9. A filter assembly according to claim 8, wherein the inner diameter of the guide ring (7) is larger than the outer diameter of the connecting rod (2).
10. The filter assembly of claim 7, further comprising a guide catheter (4), the recovery catheter (5) being sleeved outside the guide catheter (4), a distal end of the guide catheter (4) being configured to abut the guide projection (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321901628.XU CN221060956U (en) | 2023-07-18 | 2023-07-18 | Thrombus filter and filter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321901628.XU CN221060956U (en) | 2023-07-18 | 2023-07-18 | Thrombus filter and filter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221060956U true CN221060956U (en) | 2024-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321901628.XU Active CN221060956U (en) | 2023-07-18 | 2023-07-18 | Thrombus filter and filter assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221060956U (en) |
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2023
- 2023-07-18 CN CN202321901628.XU patent/CN221060956U/en active Active
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