CN216495502U - Catheter for taking thrombus - Google Patents
Catheter for taking thrombus Download PDFInfo
- Publication number
- CN216495502U CN216495502U CN202122822916.3U CN202122822916U CN216495502U CN 216495502 U CN216495502 U CN 216495502U CN 202122822916 U CN202122822916 U CN 202122822916U CN 216495502 U CN216495502 U CN 216495502U
- Authority
- CN
- China
- Prior art keywords
- hole
- guide part
- pipe
- liquid
- negative pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model relates to the technical field of interventional therapy instruments, in particular to a thrombus removal catheter, which comprises: the liquid suction device comprises an outer pipe, a liquid suction pipe and a liquid suction pipe, wherein one end of the outer pipe is provided with a guide part, and the side wall of the outer pipe is provided with a liquid passing hole and a suction hole; the liquid spraying pipe is arranged in the outer pipe, an impact hole is formed in one side, facing the guide part, of the liquid spraying pipe, and an included angle is formed between the axis of the impact hole and the axis of the outer pipe, so that liquid sprayed out of the impact hole is sprayed out through the liquid passing hole; and a negative pressure hole is formed in the other side, far away from the guide part, of the liquid spraying pipe, so that a negative pressure area allowing thrombus to enter through the suction hole is formed in the space, far away from the guide part, of the outer pipe. The utility model solves the problem that the existing thrombus taking catheter can not effectively and timely discharge all fallen thrombus.
Description
Technical Field
The utility model relates to the technical field of interventional therapy instruments, in particular to a thrombus removal catheter.
Background
At present, thrombus is more and more common in clinic and seriously threatens the life health of people. Common methods of thrombus treatment include anticoagulation, thrombolytic therapy and surgical embolectomy. Among them, surgical embolectomy is a rapid and effective method for treating thrombus, and is widely used due to its unique advantages. In the prior art, the head of the thrombus taking catheter mostly adopts a rotary cutter head to cut off thrombus, the thrombus is removed by a small part of the thrombus in a mode of impacting the thrombus by liquid, the broken thrombus is collected by the flow of the liquid, and the energy is reduced after the liquid impacts the thrombus, so that the broken thrombus cannot be completely collected, and the part of thrombus can enter a blood vessel again to form new embolism.
SUMMERY OF THE UTILITY MODEL
The utility model provides a thrombus taking catheter, which solves the problem that the existing thrombus taking catheter can not timely and effectively discharge all fallen thrombus.
In order to solve the above technical problem, the present invention provides an embolectomy catheter, comprising: the liquid suction device comprises an outer pipe, a liquid suction pipe and a liquid suction pipe, wherein one end of the outer pipe is provided with a guide part, and the side wall of the outer pipe is provided with a liquid passing hole and a suction hole; the liquid spraying pipe is arranged in the outer pipe;
an impact hole is formed in one side, facing the guide part, of the liquid spraying pipe, and an included angle is formed between the axis of the impact hole and the axis of the outer pipe, so that liquid sprayed out of the impact hole is sprayed out through the liquid passing hole;
and a negative pressure hole is formed in the other side, far away from the guide part, of the liquid spraying pipe, so that a negative pressure area allowing thrombus to enter through the suction hole is formed in the space, far away from the guide part, of the outer pipe.
Optionally, the axis of the negative pressure hole is parallel to the axis of the outer tube.
Optionally, the liquid spraying pipe comprises a straight pipe and an annular pipe arranged at one end of the straight pipe close to the guide part; the impact holes are positioned on one side surface of the annular pipe close to the guide part, and a plurality of impact holes are uniformly distributed along the circumferential direction of the annular pipe; the negative pressure holes are formed in the other side face, far away from the guide part, of the annular pipe, and a plurality of negative pressure holes are uniformly distributed in the circumferential direction of the annular pipe; the suction holes and the negative pressure holes are correspondingly matched and provided with a plurality of suction holes and negative pressure holes.
Optionally, two developing rings are fixedly sleeved on the outer wall of the outer tube, and the two developing rings are respectively located at one end of the outer tube close to the guide portion and one end of the outer tube far away from the guide portion, so that the liquid passing hole and the suction hole are both located between the two developing rings.
Optionally, the aperture of the negative pressure hole is slightly larger than that of the impact hole.
Optionally, the aperture of the impact hole is 0.03-0.1 mm.
Optionally, the guide portion is tapered.
Optionally, a guide wire guide hole is formed at the end of the guide part.
Optionally, the suction hole is a waist-shaped hole, is arranged along the bus direction of the outer pipe, and has an area larger than that of the liquid passing hole
The technical scheme of the utility model has the following advantages:
1. the utility model provides a thrombus removal catheter, wherein one end of an outer tube is provided with a guide part, the side wall of the outer tube is provided with a liquid passing hole and a suction hole, and a liquid spraying tube is arranged in the outer tube; the side of the liquid spraying pipe facing the guide part is provided with an impact hole, and the axis of the impact hole and the axis of the outer pipe form an included angle so that liquid sprayed out of the impact hole is sprayed out through the liquid hole; the other end that the guide part was kept away from to the hydrojet pipe is equipped with the negative pressure hole, so that the outer tube is kept away from the space of guide part and is formed the negative pressure district that allows the thrombus to get into through the suction hole, the direction that the guide part was kept away from to the negative pressure hole orientation sprays liquid, according to Bernoulli's principle, when the velocity of flow of this share of liquid is greater than the outside blood velocity of flow of outer tube, can form the negative pressure in the space that the guide part was kept away from to the outer tube, this negative pressure can hit garrulous thrombus of liquid that the hole erupted that impactes and inhale through the suction hole, then the liquid that the negative pressure hole erupted carries the thrombus of suction to the direction outflow of keeping away from the guide part, realize assaulting and hit garrulous thrombus, and carry the outer of blood vessel with its collection, avoid the thrombus to get into new embolism again, because liquid is direct through the negative pressure hole blowout, therefore the energy is great, can be timely effectual all discharge the thrombus that drops, it is better to get the embolism effect.
2. The utility model provides a thrombus removal catheter.A liquid spray pipe comprises a straight pipe and an annular pipe arranged at one end of the straight pipe close to a guide part; the impact holes are positioned on one side surface of the annular pipe close to the guide part and are uniformly distributed along the circumferential direction of the annular pipe; the negative pressure holes are positioned on the other side surface of the annular pipe away from the guide part, the axis of the negative pressure holes is parallel to the axis of the outer pipe, and a plurality of negative pressure holes are uniformly distributed along the circumferential direction of the annular pipe; a plurality of suction holes and negative pressure holes are correspondingly arranged in a matched manner; liquid is conveyed to the annular pipe through the straight pipe, is outwards ejected out of the liquid passing hole through the impact hole, and impacts the thrombus part to remove thrombus. Liquid in the direction far away from the guide part is ejected from the negative pressure holes distributed along the circumference of the annular tube, when the flow rate of the liquid ejected from the negative pressure holes is larger than the flow rate of blood in a blood vessel, negative pressure is formed inside the outer tube, the stripped thrombus is sucked into the outer tube through the suction holes, the liquid ejected from the negative pressure holes carries the stripped thrombus to flow out in the direction far away from the guide part, and finally thrombus taking work is finished. The axis of the negative pressure hole is parallel to the axis of the outer pipe, the velocity component of the liquid ejected by the negative pressure hole along the direction of the axis of the outer pipe is the largest, a negative pressure space is formed in the outer pipe more easily, meanwhile, the negative pressure hole is uniformly distributed along the circumferential direction of the annular pipe, the formed negative pressure space can better suck thrombus falling off from each direction outside the outer pipe, and the thrombus is prevented from entering the blood vessel again to form new embolism.
3. According to the thrombus taking catheter provided by the utility model, the two developing rings are fixedly sleeved on the outer wall of the outer tube, the liquid passing hole and the suction hole are positioned between the two developing rings, the guide part is conical, the end head of the thrombus taking catheter is provided with the guide wire leading hole, the guide wire can be penetrated through the guide wire leading hole to guide the thrombus taking catheter to a thrombus part, and the two developing rings are respectively positioned at two sides of the thrombus part, so that the impact hole and the liquid passing hole can be accurately positioned, the ejected liquid can accurately impact the thrombus part, and the suction hole can be used for sucking and dropping thrombus.
4. According to the thrombus removal conduit provided by the utility model, the aperture of the negative pressure hole is slightly larger than that of the impact hole; the suction hole is a waist-shaped hole and is arranged along the bus direction of the outer pipe, and the area of the suction hole is larger than that of the liquid passing hole; because the pressure in the liquid spraying pipe is consistent and the pressure difference between the pressure and the pressure outside the outer pipe is consistent, the flow rate of the liquid sprayed out from the impact holes and the negative pressure holes is consistent, and at the moment, the larger the aperture of the negative pressure holes is, the larger the sprayed flow is, the more the dropped thrombus is favorably sucked into the outer pipe, and the liquid sprayed out along with the negative pressure holes flows out towards the direction far away from the guide part.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a liquid spray tube;
fig. 3 is a schematic view of the working principle of the thrombectomy catheter provided by the utility model.
Description of reference numerals:
1-liquid spraying tube, 2-impact hole, 3-negative pressure hole, 4-outer tube, 5-liquid passing hole, 6-suction hole, 7-guide part, 8-developing ring, 9-blood vessel, 10-thrombus.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
One embodiment of an embolectomy catheter, as shown in fig. 1 and 2, comprises: the outer tube 4, the one end of outer tube 4 is equipped with guide part 7, guide part 7 is the toper, 7 ends of guide part have still opened the wire guide hole, it has crossed liquid hole 5 and suction hole 6 to open on the lateral wall of outer tube 4, crosses liquid hole 5 and suction hole 6 and all is close to guide part 7 and sets up. Specifically, cross liquid hole 5 and be the round hole, have a plurality ofly along 4 outer fringe week equipartitions of outer tube, suction hole 6 is waist shape hole, follows 4 generating line directions of outer tube set up, and follow 4 circumferencial direction equipartitions of outer tube have a plurality ofly, and the area is greater than cross the area in liquid hole 5.
Still be provided with spray tube 1 in the outer tube 4, spray tube 1 includes the straight tube and locates the annular tube that the straight tube is close to 7 one ends of guide part, the straight tube with the annular tube looks through connection, and the straight tube is close to the inner wall setting of outer tube 4, the outer fringe week of annular tube with the internal diameter of outer tube 4 suits, and is located between liquid hole 5 and the suction hole 6. The ring pipe is close to follow on the side of guide part 7 ring pipe circumferencial direction equipartition has a plurality of impact hole 2, impact hole 2 the axis with the axis of outer tube 4 becomes the contained angle setting, the opening slope of impact hole 2 sets up towards the inner wall of outer tube 4 promptly, and with cross liquid hole 5 and correspond the cooperation and arrange. The ring tube is kept away from follow on the another side of guide part 7 ring tube circumferencial direction still equipartition has a plurality of negative pressure holes 3, so that outer tube 1 is kept away from form in the space of guide part 7 and allow the thrombus warp the negative pressure region that suction hole 6 got into, the axis in negative pressure hole 3 is on a parallel with the axis of outer tube 4, just negative pressure hole 3 with suction hole 6 corresponds the cooperation and arranges. Specifically, the impact holes 2 are round holes with the aperture of 0.1mm, and the negative pressure holes 3 are round holes with the aperture of 0.12 mm.
Two developing rings 8 are fixedly sleeved on the outer wall of the outer tube 4, the two developing rings 8 are respectively positioned at one end, close to the guide part 7, of the outer tube 4 and at the other end, far away from the guide part 7, of the outer tube 4, so that the liquid passing hole 5 and the suction hole 6 are both positioned between the two developing rings 8, and the part between the two developing rings 8 is a working section for removing and taking bolts.
When the thrombus taking catheter provided by the utility model is used, as shown in fig. 3, a guide wire is firstly inserted into a blood vessel 9, the end head of the guide wire is inserted into a thrombus 10 part, the tail end of the guide wire is inserted into an outer tube 4 through a guide wire guide hole at the end head of a guide part 7, and the tail end of the guide wire penetrates through an annular tube and then penetrates out from one end of the outer tube 4 far away from the guide part 7. Under the guidance of the guide wire, the thrombus taking catheter is conveyed to the position of the thrombus 10, and the two developing rings 8 are respectively positioned at two ends of the thrombus 10. High-pressure liquid, such as normal saline or thrombolytic drugs, is introduced into one end of the liquid spraying tube 1, which is far away from the guide part 7, and the liquid is sprayed out through the impact holes 2 and the negative pressure holes 3 formed on the annular tube under the action of pressure. The liquid sprayed out of the impact holes 2 passes through the liquid holes 5 and then impacts the thrombus 10 part to strip the thrombus attached to the inner wall of the blood vessel 9. When the liquid ejected from the negative pressure hole 3 faces a direction away from the guide part 7 and the flow rate of the liquid is greater than the flow rate of blood in the blood vessel 9, a pressure difference is formed between the liquid and the blood, so that a negative pressure space is formed in the cavity of the outer tube 4, the peeled thrombus 10 is sucked into the outer tube 4 through the suction hole 6 and flows out along with the liquid ejected from the negative pressure hole 3 in the direction away from the guide part 7. When in specific use, a suction device such as a peristaltic pump can be connected to one end of the outer tube 4 far away from the guide part 7.
In an alternative embodiment, the diameter of the impingement holes 2 is any value between 0.03 and 0.1 mm.
Alternatively, the annular tube of the spray tube 1 may be a circular tube, in which case a straight tube may be provided in the center of the circular tube.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (9)
1. The thrombus removal catheter comprises an outer tube (4), wherein one end of the outer tube (4) is provided with a guide part (7), and the side wall of the outer tube (4) is provided with a liquid passing hole (5) and a suction hole (6); spray tube (1), locate in outer tube (4), its characterized in that:
an impact hole (2) is formed in one side, facing the guide part (7), of the liquid spraying pipe (1), and an included angle is formed between the axis of the impact hole (2) and the axis of the outer pipe (4) so that liquid sprayed out of the impact hole (2) is sprayed out through the liquid passing hole (5);
the other side of the liquid spraying tube (1) far away from the guide part (7) is provided with a negative pressure hole (3), so that a negative pressure area allowing thrombus to enter through the suction hole (6) is formed in the space of the outer tube (4) far away from the guide part (7).
2. The embolectomy catheter of claim 1, wherein: the axis of the negative pressure hole (3) is parallel to the axis of the outer tube (4).
3. The embolectomy catheter of claim 2, wherein: the liquid spraying pipe (1) comprises a straight pipe and an annular pipe arranged at one end of the straight pipe close to the guide part (7); the impact holes (2) are positioned on one side surface of the annular pipe close to the guide part (7), and a plurality of impact holes are uniformly distributed along the circumferential direction of the annular pipe; the negative pressure holes (3) are positioned on the other side surface of the annular pipe, which is far away from the guide part (7), and a plurality of negative pressure holes are uniformly distributed along the circumferential direction of the annular pipe; the suction holes (6) are correspondingly matched with the negative pressure holes (3) in a plurality.
4. The embolectomy catheter of any of claims 1-3, wherein: two developing rings (8) are fixed to the outer wall of the outer tube (4) in a sleeved mode, the two developing rings (8) are located at the position, close to one end of the guide portion (7) and far away from one end of the guide portion (7), of the outer tube (4) respectively, and therefore the liquid passing hole (5) and the suction hole (6) are located between the two developing rings (8).
5. The embolectomy catheter of any of claims 1-3, wherein: the aperture of the negative pressure hole (3) is slightly larger than that of the impact hole (2).
6. The embolectomy catheter of claim 5, wherein: the aperture of the impact hole (2) is 0.03-0.1 mm.
7. The thrombectomy catheter according to any one of claims 1 to 3, wherein: the guide part (7) is conical.
8. The embolectomy catheter of claim 7, wherein: the end of the guide part (7) is provided with a guide wire guide hole.
9. The thrombectomy catheter according to any one of claims 1 to 3, wherein: the suction holes (6) are waist-shaped holes and are arranged along the bus direction of the outer pipe (4), and the area of the suction holes is larger than that of the liquid passing holes (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122822916.3U CN216495502U (en) | 2021-11-17 | 2021-11-17 | Catheter for taking thrombus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122822916.3U CN216495502U (en) | 2021-11-17 | 2021-11-17 | Catheter for taking thrombus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216495502U true CN216495502U (en) | 2022-05-13 |
Family
ID=81531465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122822916.3U Active CN216495502U (en) | 2021-11-17 | 2021-11-17 | Catheter for taking thrombus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216495502U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948085A (en) * | 2022-06-02 | 2022-08-30 | 上海畅德医疗科技有限公司 | Perfusion catheter and application thereof |
| RU2817923C1 (en) * | 2023-10-10 | 2024-04-23 | Общество с ограниченной ответственностью "Компания "Форсел" | Liquid thrombectomy device |
-
2021
- 2021-11-17 CN CN202122822916.3U patent/CN216495502U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948085A (en) * | 2022-06-02 | 2022-08-30 | 上海畅德医疗科技有限公司 | Perfusion catheter and application thereof |
| RU2817923C1 (en) * | 2023-10-10 | 2024-04-23 | Общество с ограниченной ответственностью "Компания "Форсел" | Liquid thrombectomy device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3698740B1 (en) | Thrombus retrieval catheter | |
| EP3747380A1 (en) | Apparatus for breaking thrombus and aspirating thrombus | |
| US5827229A (en) | Percutaneous aspiration thrombectomy catheter system | |
| US5938645A (en) | Percutaneous aspiration catheter system | |
| EP2967598B1 (en) | Hydrodynamic eccentrically pivoting catheter | |
| CN216495502U (en) | Catheter for taking thrombus | |
| EP0934729A1 (en) | Apparatus for tissue excision and removal by fluid jet | |
| WO2019001245A1 (en) | Mechanical thrombus removal device | |
| US20230346416A1 (en) | Thrombus removal systems and associated methods | |
| CN115778481A (en) | Cutting guide wire and thrombus suction system | |
| CN109259819B (en) | System for sucking thrombus catheter | |
| CN113974769A (en) | Thrombus aspiration catheter | |
| CN219480245U (en) | Cutting guide wire and thrombus aspiration system | |
| CN208404743U (en) | One kind taking bolt conduit | |
| CN216167693U (en) | Thrombus suction catheter used in human blood vessel | |
| CN217186308U (en) | Blood vessel thrombus removing device | |
| CN110384536B (en) | Thrombus removing catheter and thrombus removing device with same | |
| CN214966284U (en) | Thrombus removing device | |
| CN211244777U (en) | Novel thrombus aspiration catheter | |
| CN209951542U (en) | Novel high-efficient dual-purpose cutting head of crystalline lens and vitreous body | |
| US20150005737A1 (en) | Withdrawal catheter and method | |
| CN112401972B (en) | Device for removing thrombus from external water film of catheter | |
| CN208989037U (en) | A kind of vibration-type removes the conduit of thrombus | |
| CN211157547U (en) | Ball head suction apparatus | |
| CN110652339B (en) | Thrombus removing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |