CN218528836U - Thrombus suction device - Google Patents
Thrombus suction device Download PDFInfo
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- CN218528836U CN218528836U CN202221998789.0U CN202221998789U CN218528836U CN 218528836 U CN218528836 U CN 218528836U CN 202221998789 U CN202221998789 U CN 202221998789U CN 218528836 U CN218528836 U CN 218528836U
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- suction
- funnel
- outer sheath
- thrombus
- catheter
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 67
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000012800 visualization Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 238000009998 heat setting Methods 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000009940 knitting Methods 0.000 claims 2
- 239000012528 membrane Substances 0.000 claims 1
- 238000009740 moulding (composite fabrication) Methods 0.000 claims 1
- 239000008280 blood Substances 0.000 abstract description 6
- 210000004369 blood Anatomy 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 206010059245 Angiopathy Diseases 0.000 description 1
- 206010051055 Deep vein thrombosis Diseases 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- 206010047249 Venous thrombosis Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
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Abstract
The utility model relates to the technical field of medical equipment, a thrombus suction device is disclosed. The device includes: a suction funnel, a suction catheter, and a control assembly; the suction funnel is of a funnel-shaped support structure capable of expanding and contracting, and the proximal end of the suction funnel is connected with the distal end of the suction catheter; the outer sheath tube is used for accommodating the suction funnel, and the suction catheter is arranged in the outer sheath tube in a penetrating way and can axially move relative to the outer sheath tube; the distal end of the control assembly is coupled to the proximal ends of the aspiration catheter and the outer sheath, respectively, and the control assembly is configured to control axial movement of the aspiration catheter relative to the outer sheath to release the aspiration funnel or to retract the aspiration funnel into the outer sheath. The utility model discloses thrombus suction device can retrieve the funnel repeatedly in order to adjust the suction position of suction funnel in the blood vessel in the sheath pipe to can carry out the suction in a flexible way to the thrombus of different positions, consequently reducible apparatus is put into the number of times, is improved suction effect and suction efficiency, and is favorable to shortening the blood loss volume that shortens operation time, reduces patient in the art.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to thrombus suction device.
Background
Peripheral deep vein thrombosis is a common vascular disorder, and a common treatment involves aspiration of the thrombus with an aspiration device.
When the existing suction device sucks thrombus, because the port of the sheath tube has no buffer structure when the thrombus enters the sheath tube, the port of the sheath tube can cut the thrombus sucked to the port of the sheath tube, so that part of the thrombus can not be completely sucked to the sheath tube, and the floating thrombus has the risk of blocking a far-end blood vessel; another problem of the existing suction device is that the multi-section thrombus in the blood vessel can not be sucked for a plurality of times, and the specification of the instrument needs to be frequently changed, so that the blood loss of a patient is increased, the operation time is prolonged, and the cost is high.
It should be understood that the above general description is only an exemplary explanation of the related art and does not represent prior art to the present disclosure.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the embodiments of the present invention is to provide a thrombus aspiration device, which can repeatedly recover the funnel into the sheath tube to adjust the aspiration position of the aspiration funnel in the blood vessel, so as to aspirate the thrombus at different positions flexibly, thereby reducing the number of times of putting the device into the vessel, improving the aspiration effect and the aspiration efficiency, and being beneficial to shortening the operation time and reducing the blood loss of the patient in the operation.
In order to solve the above technical problem, an embodiment of the present invention provides a thrombus aspiration device, including: a suction funnel being a funnel-like support structure capable of expansion and contraction; a suction catheter; the distal end of the suction funnel is connected with the proximal end of the suction funnel;
the outer sheath tube is used for accommodating the suction funnel, and the suction catheter is arranged in the outer sheath tube in a penetrating mode and can move axially relative to the outer sheath tube; and
a control assembly having a distal end coupled to the aspiration catheter and the proximal end of the outer sheath, respectively, the control assembly for controlling axial movement of the aspiration catheter relative to the outer sheath to release the aspiration funnel or to retract the aspiration funnel into the outer sheath.
As an embodiment, the thrombus aspiration device further comprises:
the lining core penetrates through the suction catheter and can axially move relative to the suction catheter;
the distal end of the lining core is provided with a conical puncture structure, and a guide wire channel for a guide wire to pass through is arranged in the lining core;
the suction funnel is receivable within a gap between the liner core and the outer sheath.
As an embodiment, the suction funnel is made using one or a combination of the following processes: weaving and forming by using weaving wires, laser cutting and heat setting, or an additive manufacturing process.
As an embodiment, the surface of the suction funnel is provided with a coating film.
As an embodiment, the coating is provided with a plurality of through holes.
As one example, the outer sheath outer surface is provided with a lubricious coating.
As one example, the liner core, the aspiration catheter, and the distal end of the sheath are all flexible structures adapted to bend a blood vessel.
As one embodiment, the control assembly includes: the distal end of the outer sheath tube handle is connected with the proximal end of the outer sheath tube;
a suction handle disposed on a proximal side of the outer sheath handle, a distal end of the suction handle being connected to a proximal end of the suction catheter;
the proximal end of the liner core extends out of the proximal end of the suction handle.
As one example, the distal end of the aspiration catheter and/or the distal end of the outer sheath are provided with a visualization ring.
According to the above technical scheme, the utility model discloses following advantage and positive effect have at least:
the utility model discloses among the thrombus suction device, through addding the sheath pipe, and the suction catheter wears to locate in the sheath pipe and can be relative to sheath pipe axial displacement, can release or retrieve suction funnel through control suction catheter relative to sheath pipe axial displacement, when needing to adjust the suction position in the operation, can retrieve suction funnel and adjust suction funnel to new suction position again after going into the sheath pipe, then release suction funnel and continue the suction again, can realize repeated adjustment suction position many times from this, reduce the apparatus and put into the number of times, and realize the suction of thrombus in the longer thrombus section, especially, do benefit to the suction of crooked blood vessel department thrombus, improve thrombus suction effect and suction efficiency, and be favorable to saving operation time, reduce patient's blood loss, reduce the operation expense.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly introduced below, it should be understood that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a thrombus aspiration device provided by an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1;
FIG. 3 is a schematic structural view of a release state of a suction funnel in the thrombus suction device according to an embodiment of the present invention;
FIG. 4 is a schematic view of a receiving state of a suction funnel in the thrombus suction device according to the embodiment of the present invention;
fig. 5 is a schematic view of a part of the enlarged structure at the position I in fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the invention. However, the technical solution claimed in the present invention can be realized without these technical details and various changes and modifications based on the following embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be noted that, unless expressly stated otherwise, the terms "connected," "connected," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
In the description of the present invention, it should be noted that, in the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; axial refers to a direction parallel to the line connecting the center of the distal end and the center of the proximal end of the medical device in its natural state. The above definitions are for convenience of description only and should not be construed as limiting the present invention.
Referring to fig. 1, a thrombus aspiration device for removing thrombus by aspiration is provided according to an embodiment of the present invention. The device includes: an outer sheath 2, a suction catheter 11, an expandable suction funnel 12, and a control assembly 4.
The proximal end of the aspiration funnel 12 is attached to the distal end of the aspiration catheter 11 and is capable of buffering and guiding thrombus into the aspiration catheter 11 for efficient aspiration.
The sheath tube 2 is used for accommodating a suction funnel 12, and the suction catheter 11 is inserted into the sheath tube 2 and can move axially relative to the sheath tube 2.
The control assembly 4 comprises a plurality of handles, the distal ends of which are respectively connected with the suction catheter 11 and the proximal end of the outer sheath tube 2, and is used for controlling the suction catheter 11 to axially move relative to the outer sheath tube 2 so as to release the suction funnel 12 or recover the suction funnel 12 into the outer sheath tube 2, so that thrombus can be sucked at different positions of the blood vessel for a plurality of times, such as different embolism sections of a longer thrombus section or a bent blood vessel position, and the like, and then the suction efficiency and the clearance rate of the thrombus can be improved, the implantation times of the apparatus can be reduced, the operation time can be shortened, the blood loss of a patient can be reduced, and the operation cost can be reduced.
Referring to fig. 3, the suction funnel 12 is an expandable and contractible funnel-shaped support structure. The suction funnel 12 may be formed by braiding braided filaments. Specifically, the shape memory alloy wires, such as nitinol wires, can be interlaced to form a funnel-shaped stent structure with two open ends. Referring to fig. 2, the proximal end of the suction funnel 12 may be welded to the distal end of the suction catheter 11. The nickel-titanium alloy braided wire also has good biocompatibility. The heat-treated and shaped suction funnel 12 can expand and cling to the inner wall of the blood vessel by the elastic force of the suction funnel in a natural state (i.e., when the suction funnel is not constrained by external force), and a larger suction opening is formed by supporting the inner wall of the blood vessel, so that thrombus is buffered and guided. It will be appreciated that the suction funnel may also be formed using laser cutting and heat setting processes, or using additive manufacturing processes (e.g. 3D printing), etc., although a mixture of the aforementioned processes may also be used. The present embodiment does not limit the manufacturing process and materials of the suction funnel.
It is worth mentioning that the surface of the suction funnel 12 may be further provided with a coating. For example, the coating may be perforated with a plurality of through holes, or the coating may be non-perforated. The coating may facilitate the smooth entry of thrombus into the aspiration catheter 11.
In some examples, as shown in fig. 1, 3 and 4, the thrombus extraction device may further include a liner 3. The lining core 3 is arranged in the suction catheter 11 in a penetrating way and can move axially relative to the suction catheter 11, the distal end of the lining core 3 is provided with a conical puncture structure 31, and the lining core 3 can realize the function of a puncture sheath. A guide wire channel for the guide wire to pass through is arranged in the lining core 3. The suction funnel 12 can be accommodated in the gap between the core 3 and the outer sheath tube 2.
The outer surface of the outer sheath tube 2 can be provided with a lubricating coating which has hydrophilicity, so that the thrombus suction device has strong smoothness, the resistance of the thrombus suction device in the movement of blood vessels is reduced, and the thrombus suction device is ensured to be implanted and withdrawn smoothly.
It should be noted that the distal ends of the lining core 3, the aspiration catheter 11 and the sheath tube 2 are all flexible structures suitable for bending blood vessels, so that the distal end of the thrombus aspiration device has better flexibility as a whole and can be bent along with the bent blood vessels.
The control assembly 4 may include a sheath handle (not shown) and a suction handle (not shown). Wherein the sheath handle may be tubular with a distal end connected to the proximal end of the sheath 2 for driving the sheath 2 to move axially relative to the suction catheter 11 for releasing or retracting the suction funnel 11. The suction handle is provided on the proximal side of the sheath handle, and the distal end of the suction handle is connected to the proximal end of the suction catheter 11, and the suction funnel 11 can be released and recovered by driving the suction catheter 11 to move axially relative to the sheath 2. The suction catheter side wall may be provided with a suction connection through which a source of negative pressure may be connected to provide suction negative pressure to the suction catheter. The proximal end of the lining core 3 penetrates out of the proximal end of the suction handle, the proximal end of the lining core 3 is provided with a lining core handle, the lining core handle can be locked on the suction handle, the thrombus suction device can be conveniently pushed integrally, and the lining core handle can be unlocked from the suction handle, so that the lining core can be completely extracted from the suction catheter. The sheath tube handle, the suction catheter handle, the lining core handle and the like can adopt common handle structures, and the description is omitted.
Alternatively, the distal end of the aspiration catheter 11 and/or the distal end of the outer sheath 2 may be provided with a visualization ring. For example, the distal end of the aspiration catheter 11 is provided with a first visualization ring (not shown), and the distal end of the outer sheath 2 is provided with a second visualization ring (not shown). The first developing ring and the second developing ring can be both of annular structures made of anti-ray transmission materials, and are fixedly sleeved on the suction catheter 11 and the outer sheath tube 2. The external arrangement of the suction funnel 11 and the sheath tube 2 can be observed by the first developing ring and/or the second developing ring, which facilitates adjustment of the recovery and release positions of the suction funnel 12.
With reference to fig. 1 and 4, the thrombus aspiration device according to the embodiment of the present invention has the following usage and steps:
after the thrombus suction device is implanted along the guide wire, directly puncturing by using the lining core of the thrombus suction device, observing the entering position of the head end of the lining core of the thrombus suction device under the developing condition or the X-ray condition after the thrombus suction device enters a blood vessel, unlocking the handle of the lining core after the thrombus suction device reaches the thrombus suction position, and slowly pulling out the lining core; and unlocking the sheath tube handle and the suction catheter handle, slowly withdrawing the sheath tube by operating the sheath tube handle to release the suction funnel, observing the release state and position of the suction funnel under a developing condition, holding the suction catheter handle and pushing the sheath tube handle to the far end when the position needs to be adjusted to suck, recovering the suction funnel 12 into the sheath tube 2 again, adjusting the position of the thrombus suction device again, and slowly withdrawing the sheath tube 2 to release the suction funnel 12 again after being adjusted in place.
After the suction funnel 12 is released, a negative pressure source connected with a suction catheter handle is opened to perform negative pressure suction, thrombus is extracted out of the body, the patency rate of the blood vessel is observed under radiography, and after the operation is completed, the outer sheath tube 2 and the suction catheter are locked and then are extracted out of the body. When there are many thrombi in the blood vessel, the suction funnel can be withdrawn by operating the suction catheter handle, and the suction funnel can be recovered into the outer sheath tube 2 again. And then the thrombus suction device is pushed to the next thrombus suction position integrally and distally, thrombus suction is carried out again, and the suction operation is repeated until the thrombus is removed.
The utility model discloses thrombus suction device compares with prior art, through addding the sheath pipe, and the suction catheter wears to locate in the sheath pipe and can be relative to sheath pipe axial displacement, can release or retrieve suction funnel through the relative outer sheath pipe axial displacement of control suction catheter, when needing to adjust suction position in the operation, can retrieve suction funnel and adjust suction funnel to new suction position again after going into in the sheath pipe, then release suction funnel again and continue the suction, can realize repeated many times adjustment suction position from this, reduce the apparatus and put into the number of times, and realize the suction of thrombus in the longer thrombus section, especially, do benefit to the suction of crooked blood vessel department thrombus, improve thrombus suction effect and suction efficiency, and be favorable to saving operation time, reduce patient's blood loss volume, reduce the operation cost.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (9)
1. A thrombus aspiration device, comprising:
a suction funnel being a funnel-like support structure capable of expansion and contraction;
a suction catheter having a distal end connected to the proximal end of the suction funnel;
the outer sheath tube is used for accommodating the suction funnel, and the suction catheter is arranged in the outer sheath tube in a penetrating mode and can move axially relative to the outer sheath tube; and
a control assembly having a distal end coupled to the aspiration catheter and a proximal end of the outer sheath, respectively, the control assembly for controlling axial movement of the aspiration catheter relative to the outer sheath to release the aspiration funnel or retract the aspiration funnel into the outer sheath.
2. A thrombus aspiration device according to claim 1, characterized in that the thrombus aspiration device further comprises:
the lining core penetrates through the suction catheter and can axially move relative to the suction catheter;
the distal end of the lining core is provided with a conical puncture structure, and a guide wire channel for a guide wire to pass through is arranged in the lining core;
the suction funnel is receivable in a gap between the liner core and the outer sheath.
3. A thrombus aspiration device according to claim 1 wherein the aspiration funnel is made using one or a combination of the following processes: knitting silk knitting forming, laser cutting and heat setting, or additive manufacturing process.
4. A thrombus aspiration device according to claim 1, wherein the aspiration funnel surface is provided with a coating.
5. The thrombus aspiration device according to claim 4, wherein the covering membrane is provided with a plurality of through holes.
6. A thrombus aspiration device according to claim 1, wherein the outer sheath outer surface is provided with a lubricating coating.
7. A thrombus aspiration device according to claim 2, wherein the core, aspiration catheter and distal end of the sheath are all flexible structures adapted to bend blood vessels.
8. A thrombus aspiration device according to claim 2, wherein the control assembly comprises:
the distal end of the outer sheath tube handle is connected with the proximal end of the outer sheath tube;
a suction handle disposed on a proximal side of the outer sheath handle, a distal end of the suction handle being connected to a proximal end of the suction catheter;
the proximal end of the liner core extends out of the proximal end of the suction handle.
9. A thrombus aspiration device according to claim 1, wherein the distal end of the aspiration catheter and/or the distal end of the outer sheath is provided with a visualization ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221998789.0U CN218528836U (en) | 2022-08-01 | 2022-08-01 | Thrombus suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221998789.0U CN218528836U (en) | 2022-08-01 | 2022-08-01 | Thrombus suction device |
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| Publication Number | Publication Date |
|---|---|
| CN218528836U true CN218528836U (en) | 2023-02-28 |
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| CN202221998789.0U Active CN218528836U (en) | 2022-08-01 | 2022-08-01 | Thrombus suction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116158806A (en) * | 2023-04-26 | 2023-05-26 | 北京心祐医疗科技有限公司 | Thrombus aspiration component and thrombus taking expansion device |
-
2022
- 2022-08-01 CN CN202221998789.0U patent/CN218528836U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116158806A (en) * | 2023-04-26 | 2023-05-26 | 北京心祐医疗科技有限公司 | Thrombus aspiration component and thrombus taking expansion device |
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