CN219289598U - Catheter capable of being used for thrombus aspiration - Google Patents
Catheter capable of being used for thrombus aspiration Download PDFInfo
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- CN219289598U CN219289598U CN202320261286.3U CN202320261286U CN219289598U CN 219289598 U CN219289598 U CN 219289598U CN 202320261286 U CN202320261286 U CN 202320261286U CN 219289598 U CN219289598 U CN 219289598U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The utility model discloses a catheter capable of being used for thrombus aspiration, and relates to the technical field of thrombus catheters, which comprises a catheter main body, wherein one end of the catheter main body is a catheter distal end, the other end of the catheter main body is a catheter proximal end, a perfusion pipeline, a negative pressure pipeline and an inflation pipeline are arranged in the catheter main body, the catheter proximal end is connected with a catheter connector, the perfusion pipeline, the negative pressure pipeline and the inflation pipeline are respectively connected with the perfusion connector, the negative pressure connector and the inflation connector through the catheter connectors, a blocking air bag is arranged on the outer side of the catheter main body, and the inflation pipeline is communicated with the blocking air bag; the outside of filling pipeline, negative pressure pipeline and inflation line is equipped with fixed bolster, is equipped with elastic support structure between fixed bolster and the pipe main part, and pipe main part, fixed bolster, filling pipeline, negative pressure pipeline and inflation line are the elastic tube. The utility model can increase the pressure difference at two sides of thrombus by using the perfusion pipeline, thereby facilitating the extraction of thrombus and enhancing certain flexibility and strength.
Description
Technical Field
The utility model relates to the technical field of thrombus catheters, in particular to a catheter for thrombus aspiration.
Background
Intravascular thrombosis is a clinically common disease and frequently-occurring disease, and is frequently generated in blood vessels of various parts of a human body, and has the characteristics of high morbidity and extremely high disability and mortality rate. At present, the treatment modes which are usually recommended for treating the intravascular thrombus are two modes of medicine thrombolysis and mechanical thrombolysis. Mechanical embolectomy modes include capturing, aspiration, and rotary cutting. The suction thrombus removing in the mechanical thrombus removing process is used for clearing thrombus in a negative pressure suction mode, and has the characteristics of small vascular trauma, high thrombus removing efficiency and simplicity in operation for a patient in the treatment process.
The existing device for thrombus suction such as a thrombus removing system and a using method provided by patent number CN115444505A can be used for plugging thrombus and preventing thrombus from escaping through the combined use of the plugging saccule and the thrombus breaking bracket, and can be used for taking thrombus and breaking thrombus.
However, the thrombus extraction possibility by using only negative pressure is insufficient, and for a blood vessel which is curved in shape and fragile, a device for sucking thrombus is required to have a certain flexibility and a proper strength, however, there is no good solution in the prior art.
Thus, there is an urgent need in the market for a catheter that can be used for thrombus aspiration to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide a catheter for thrombus aspiration, which is used for solving the technical problems in the prior art, can improve the aspiration force on thrombus, and has proper overall flexibility and strength.
In order to achieve the above object, the present utility model provides the following solutions:
the utility model discloses a catheter capable of being used for thrombus aspiration, which comprises a catheter main body, wherein one end of the catheter main body is a catheter distal end, the other end of the catheter main body is a catheter proximal end, a perfusion pipeline, a negative pressure pipeline and an inflation pipeline are arranged in the catheter main body, the catheter proximal end is connected with a catheter connector, the perfusion pipeline, the negative pressure pipeline and the inflation pipeline are respectively connected with a perfusion connector, a negative pressure connector and an inflation connector through the catheter connectors, one end of the perfusion connector, which is far away from the catheter connector, is used for connecting a perfusion liquid source, one end of the negative pressure connector, which is far away from the catheter connector, is used for connecting an inflation device, a blocking air bag is arranged on the outer side of the catheter main body, the inflation pipeline is communicated with the blocking air bag, and one end of the perfusion pipeline, which is close to the catheter distal end, penetrates out of the catheter distal end;
the perfusion pipeline the negative pressure pipeline with the outside of inflation line is equipped with the fixed bolster, the fixed bolster with be equipped with elastic support structure between the pipe main part, the pipe main part fixed bolster the perfusion pipeline the negative pressure pipeline with the inflation line is the elastic tube.
Preferably, a first air outlet is formed in the side wall of the air charging pipeline, a second air outlet is formed in the side wall of the fixed sleeve, a third air outlet is formed in the side wall of the catheter main body, and the first air outlet, the second air outlet and the third air outlet are communicated.
Preferably, a blocking wire can be inserted into the perfusion tube.
Preferably, a liquid inlet is formed in the side wall of the filling pipeline, and the plugging wire can plug the liquid inlet.
Preferably, the end of the perfusion tube near the distal end of the catheter is a bevel cut.
Preferably, the perfusion pipeline is provided with a plurality of developing marks.
Preferably, the elastic supporting structure is an elastic supporting wire, and the elastic supporting wire is spirally wound on the outer side of the fixed sleeve.
Preferably, the distal end of the catheter is tapered.
Compared with the prior art, the utility model has the following technical effects:
the utility model utilizes the perfusion pipeline to convey the perfusion liquid to one side of the thrombus near the distal end of the catheter, and can further increase the pressure difference at two ends of the thrombus by combining the negative pressure effect of the negative pressure pipeline, thereby enhancing the suction effect on the thrombus.
Furthermore, through being equipped with elastic support structure between fixed sleeve and pipe main part to each pipe fitting is the elastic tube, when promoting the holistic support intensity of device, still it has certain pliability, makes it be applicable to and works in the blood vessel.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing the external structure of a catheter usable for thrombus aspiration according to an embodiment of the present utility model;
FIG. 2 is a schematic view showing the internal structure of a catheter usable for thrombus aspiration according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a catheter that may be used for thrombus aspiration in accordance with an embodiment of the present utility model;
in the figure: 1-a catheter body; 2-conduit coupling; 3-priming a joint; 4-a negative pressure joint; 5-an inflation joint; 6-a negative pressure pipeline; 7-filling a pipeline; 8-an inflation line; 9-an elastic support structure; 10-plugging the air sac; 11-fixed sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a catheter for thrombus aspiration, which is used for solving the technical problems in the prior art, can improve the aspiration force on thrombus, and has proper overall flexibility and strength.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-3, the present embodiment provides a catheter for aspiration of thrombus, which includes a catheter body 1, wherein one end of the catheter body 1 is a distal end of the catheter (i.e., the left end in fig. 1-2), and the other end is a proximal end of the catheter (i.e., the right end in fig. 1-2). Be equipped with filling line 7, negative pressure pipeline 6 and inflation line 8 in the pipe main part 1, the pipe near-end is connected with pipe joint 2, and filling line 7, negative pressure pipeline 6 and inflation line 8 are connected with respectively through pipe joint 2 and fill joint 3, negative pressure joint 4 and inflation joint 5, wherein, fill joint 3, negative pressure joint 4 and inflation joint 5 can be current luer joint or other model's joint all. The end of the perfusion joint 3, which is far away from the catheter joint 2, is used for being connected with a perfusion fluid source which is a physiological saline water container. The end of the negative pressure joint 4 far away from the conduit joint 2 is used for being connected with a negative pressure device, and the negative pressure device is a negative pressure pump. The end of the air charging connector 5 far away from the conduit connector 2 is used for being connected with an air charging device, and the air charging device can be a fan or an air compressor. The outside of the catheter main body 1 is provided with a blocking air sac 10, an air charging pipeline 8 is communicated with the blocking air sac 10, and one end of a perfusion pipeline 7 close to the distal end of the catheter penetrates out of the distal end of the catheter;
the outside of filling pipe 7, negative pressure pipeline 6 and inflation line 8 is equipped with fixed sleeve 11, utilize fixed sleeve can be with filling pipe 7, negative pressure pipeline 6 and inflation line 8 relatively fixed, be equipped with elastic support structure 9 between fixed sleeve 11 and the pipe main part 1, elastic support structure 9 both has certain elasticity, make it can be suitable crooked, can carry out the supporting role again, reinforcing holistic supporting strength, pipe main part 1, fixed sleeve 11, filling pipe 7, negative pressure pipeline 6 and inflation line 8 are the elastic tube, the pipe that the elastic tube can carry out suitable deformation promptly, thereby can insert in the blood vessel.
When it is necessary to aspirate a thrombus in a blood vessel, the catheter body 1 is inserted into the blood vessel. When the distal end of the catheter abuts against the thrombus, the distal end of the perfusion tube 7 pierces the thrombus, and the distal end of the catheter abuts against the proximal surface of the thrombus. Then, the inflator is activated, and the blocking balloon 10 is inflated by the inflator through the inflation line 8 to expand and block the blood vessel, thereby completing the preparation work.
Next, a negative pressure device is required to be started, and the negative pressure device can be used for enabling the negative pressure pipeline 6 to form a negative pressure environment so as to extract thrombus; at the same time, the perfusion pipeline 7 can be used for perfusing physiological saline to the side of the thrombus far away from the negative pressure pipeline 6, so that the pressure difference of the two sides of the thrombus is increased, and the thrombus can be sucked into the negative pressure pipeline 6, so that the thrombus extraction is completed.
During this time, since the catheter main body 1, the fixing sleeve 11, the perfusion tube 7, the negative pressure tube 6 and the inflation tube 8 are all elastic tubes, they have a certain flexibility on the basis of having a certain supporting force by themselves, so that they can be better introduced into the blood vessel. And the elastic supporting structure 9 is further arranged, so that the whole supporting effect can be further improved, and the elastic supporting structure 9 can be properly bent.
In this embodiment, a first air outlet is formed on a side wall of the air charging pipeline 8, a second air outlet is formed on a side wall of the fixed sleeve 11, a third air outlet is formed on a side wall of the catheter main body 1, the first air outlet, the second air outlet and the third air outlet are arranged at positions corresponding to each other, and the first air outlet, the second air outlet and the third air outlet are communicated. When the inflation device inflates the inflation pipeline 8 through the inflation connector 5, the gas sequentially passes through the first gas outlet, the second gas outlet and the third gas outlet, and finally enters the blocking airbag 10 to expand.
In this embodiment, a plugging wire can be inserted into the perfusion tube 7, and can be taken out when physiological saline needs to be injected into the blood vessel through the perfusion tube 7; if no injection is required, the blocking wire is inserted into the perfusion tube 7 so that it is in a sealed state.
In this embodiment, a liquid inlet (not shown) is disposed on the sidewall of the filling pipe 7, the liquid inlet is disposed on the upper wall of the filling pipe 7 in fig. 1, and the liquid inlet is disposed on the proximal side (i.e. the right side in fig. 1) of the plugging balloon 10, and the plugging wire can plug the liquid inlet. After the occlusion balloon 10 is expanded to block blood flow, the occlusion wire is withdrawn toward the right side of fig. 1 so that the occlusion wire is positioned to the right of the inlet port, at which time the occlusion wire does not block the inlet port, blood on the proximal side of the occlusion balloon 10 (i.e., the right side of fig. 1) flows through the inlet port into the perfusion tube 7, and blood in the perfusion tube 7 flows proximally to distally in its original flow direction until it flows to the distal end of the thrombus (the left side of fig. 1) to increase the pressure at the distal end of the thrombus.
In this embodiment, the end of the infusion line 7 near the distal end of the catheter is beveled, which facilitates the penetration of the infusion line 7 through the thrombus.
In this embodiment, the perfusion tube 7 is provided with a plurality of developing marks. The device is specifically arranged on the perfusion pipeline 7, two display marks are arranged, after the perfusion pipeline 7 pierces thrombus, the two display marks are respectively arranged on two sides of the thrombus, and the position of the thrombus can be determined by utilizing the display marks. The developing indicator can be visible under X-rays and other rays, and can be made of a metal material with poor X-ray permeability, such as: gold, platinum, tantalum, tungsten, etc., or a polymer material doped with a material having poor X-ray permeability, such as: doped with BaSO 4 、Bi 2 O 3 Is convenient for positioning the perfusion tube 7 in the blood vessel.
In this embodiment, the elastic supporting structure 9 is an elastic supporting wire, the elastic supporting wire is spirally wound on the outer side of the fixed sleeve 11, the elastic supporting wire is made of a nickel-titanium alloy material, the nickel-titanium alloy is a shape memory alloy, and the shape memory alloy is a special alloy capable of automatically recovering plastic deformation of the elastic supporting structure to an original shape at a specific temperature, so that the elastic supporting structure has good plasticity. Of course, the material of the elastic support wire may be replaced by other soft alloy materials such as titanium-containing alloy.
The filling pipeline 7, the negative pressure pipeline 6 and the air charging pipeline 8 are made of Polytetrafluoroethylene (PTFE), so that the sliding friction coefficient is small, and the fluid resistance is reduced.
The catheter body 1 is made of polyurethane material, and the outer surface of the catheter body 1 is provided with a hydrophilic coating, so that the catheter body 1 is soft and hydrophilic, thereby enhancing the compliance of the catheter body 1 and reducing the risk of damage to the vessel wall.
In this embodiment, the distal end of the catheter has a tapered configuration, and the diameter gradually increases from the distal end of the catheter to the proximal end of the catheter, which is provided for the purpose of facilitating insertion of the catheter body 1 into a blood vessel.
The principles and embodiments of the present utility model have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present utility model and its core ideas; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (8)
1. A catheter for aspiration of thrombus, characterized by: the catheter comprises a catheter main body, wherein one end of the catheter main body is a catheter far end, the other end of the catheter main body is a catheter near end, a perfusion pipeline, a negative pressure pipeline and an inflation pipeline are arranged in the catheter main body, the catheter near end is connected with a catheter joint, the perfusion pipeline, the negative pressure pipeline and the inflation pipeline are respectively connected with a perfusion joint, a negative pressure joint and an inflation joint through the catheter joint, one end of the perfusion joint, which is far away from the catheter joint, is used for connecting a perfusion liquid source, one end of the negative pressure joint, which is far away from the catheter joint, is used for connecting a negative pressure device, one end of the inflation joint, which is far away from the catheter joint, is used for connecting an inflation device, a plugging air bag is arranged on the outer side of the catheter main body, the inflation pipeline is communicated with the plugging air bag, and one end of the perfusion pipeline, which is close to the catheter far end, penetrates out of the catheter;
the perfusion pipeline the negative pressure pipeline with the outside of inflation line is equipped with the fixed bolster, the fixed bolster with be equipped with elastic support structure between the pipe main part, the pipe main part fixed bolster the perfusion pipeline the negative pressure pipeline with the inflation line is the elastic tube.
2. A catheter usable for thrombus aspiration as in claim 1 wherein: the side wall of the air charging pipeline is provided with a first air outlet, the side wall of the fixed sleeve is provided with a second air outlet, the side wall of the catheter main body is provided with a third air outlet, and the first air outlet, the second air outlet and the third air outlet are communicated.
3. A catheter usable for thrombus aspiration as in claim 1 wherein: a blocking wire can be inserted into the filling pipeline.
4. A catheter usable for thrombus aspiration as in claim 3 wherein: the side wall of the filling pipeline is provided with a liquid inlet, and the plugging wire can plug the liquid inlet.
5. A catheter usable for thrombus aspiration as in claim 1 wherein: one end of the perfusion pipeline close to the distal end of the catheter is an oblique incision.
6. A catheter usable for thrombus aspiration as in claim 1 wherein: and a plurality of developing marks are arranged on the filling pipeline.
7. A catheter usable for thrombus aspiration as in claim 1 wherein: the elastic supporting structure is an elastic supporting wire which is spirally wound on the outer side of the fixed sleeve.
8. A catheter usable for thrombus aspiration as in claim 1 wherein: the distal end of the catheter is in a conical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320261286.3U CN219289598U (en) | 2023-02-21 | 2023-02-21 | Catheter capable of being used for thrombus aspiration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320261286.3U CN219289598U (en) | 2023-02-21 | 2023-02-21 | Catheter capable of being used for thrombus aspiration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219289598U true CN219289598U (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320261286.3U Active CN219289598U (en) | 2023-02-21 | 2023-02-21 | Catheter capable of being used for thrombus aspiration |
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| Country | Link |
|---|---|
| CN (1) | CN219289598U (en) |
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- 2023-02-21 CN CN202320261286.3U patent/CN219289598U/en active Active
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