CN220588319U - Suction catheter with auxiliary flow inner tube and suction and thrombolysis system - Google Patents
Suction catheter with auxiliary flow inner tube and suction and thrombolysis system Download PDFInfo
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- CN220588319U CN220588319U CN202321766340.6U CN202321766340U CN220588319U CN 220588319 U CN220588319 U CN 220588319U CN 202321766340 U CN202321766340 U CN 202321766340U CN 220588319 U CN220588319 U CN 220588319U
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- 230000002537 thrombolytic effect Effects 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 claims description 3
- 229920002614 Polyether block amide Polymers 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
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- 210000005239 tubule Anatomy 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 208000007536 Thrombosis Diseases 0.000 abstract description 66
- 239000001301 oxygen Substances 0.000 abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 239000008280 blood Substances 0.000 abstract description 7
- 210000004369 blood Anatomy 0.000 abstract description 7
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- 208000005189 Embolism Diseases 0.000 description 7
- 201000010099 disease Diseases 0.000 description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 7
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- 230000001154 acute effect Effects 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 230000002526 effect on cardiovascular system Effects 0.000 description 2
- 230000007954 hypoxia Effects 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
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- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 206010069729 Collateral circulation Diseases 0.000 description 1
- 206010058490 Hyperoxia Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
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- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
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Abstract
The utility model discloses a suction catheter with an auxiliary flow inner tube, which comprises a suction catheter and an auxiliary flow inner tube, wherein the auxiliary flow inner tube is movably sleeved in the suction catheter, the length of the auxiliary flow inner tube is slightly longer than that of the suction catheter, a developing head is arranged at the far end of the auxiliary flow inner tube, and a plurality of outflow holes are uniformly arranged on the side wall of the far end tube. The aspiration catheter, the auxiliary flow tube and the thrombus are defined to be distal at the end distal to the operator and proximal at the end proximal to the operator. Based on the suction catheter, the utility model provides a suction and thrombus removal system, which comprises a suction passage, an auxiliary flow passage and a suction catheter with an auxiliary flow inner pipe, wherein the suction passage, the auxiliary flow passage and the suction catheter are connected through a Y-shaped three-way joint, and before thrombus is removed, high oxygen liquid is infused into the distal end of the thrombus through the auxiliary flow inner pipe, so that the blood oxygen supply of the distal end of a thrombus can be directly recovered, and the blood volume is expanded to promote and accelerate the suction and thrombus removal process.
Description
Technical Field
The utility model relates to the technical field of vascular thrombolysis, in particular to a suction catheter with an auxiliary flow inner tube and a suction thrombolysis system matched with the same.
Background
Acute vascular occlusive disease is a common cardiovascular and cerebrovascular disease, and is often caused by arterial vessel acute occlusion due to thrombus or arteriosclerosis plaque falling off from the wall of a diseased vessel, and then causes a series of irreversible physiological and pathological reactions such as depolarization, inflammatory reaction, apoptosis and the like of organs and tissues with remote ischemia. The diseases comprise ischemic cerebral apoplexy, acute myocardial infarction, pulmonary embolism and the like, have the characteristics of urgent onset, rapid development, serious symptoms, high disability rate and mortality rate, and belong to acute critical diseases in cardiovascular and cerebrovascular clinical diseases. Early removal of the plug to unblock the occluded vessel is critical to improving the therapeutic effect of such diseases. The related professional organizations and the academy at home and abroad recommend the minimally invasive interventional mechanical thrombus taking treatment through the catheter to be carried out on the patients, and the direct thrombus taking is taken as a new technology which is emerging in recent years, so that the method has the advantages of high vascular recanalization rate, good safety, simple surgical equipment, short surgical time, low treatment cost and the like, and has excellent clinical application prospect.
When the direct aspiration and thrombus removal operation is carried out, a femoral artery or radial artery access way is adopted, a suction catheter is pushed to an embolism part through the assistance of a sheath tube and a guide wire, and a suction pump is started or a large-caliber injector is operated to generate required suction negative pressure. The generated negative pressure is applied to the proximal end face of the thrombus through the aspiration catheter, so that the thrombus is loosened from the wall of the blood vessel at the occlusion position and is transported to the outside of the body along the inner cavity of the catheter, and the aspiration and thrombus removal operation is completed.
Clinical practice has shown that the mainstream design of current aspiration catheters remains significantly inadequate for improving aspiration efficiency and in many cases has not been effective in aspirating thrombi. As shown in fig. 1, when a conventional aspiration catheter is used, thrombus lodged in a blood vessel is subjected to mainly two forces: one is the suction force (shown by gray arrows) generated by suction negative pressure acting on the catheter lumen to draw thrombus into the catheter lumen proximally, and the other is the driving force (shown by white arrows) generated by blood pressure in the proximal vessel lumen bounded by the inner surface of the vessel wall and the outer surface of the catheter wall to drive thrombus distally and counter the suction force. When the two forces are unbalanced, two other secondary acting forces are generated, wherein one acting force is the pushing force of the catheter on thrombus, and the acting direction is the distal direction of the thrombus; the other is the friction of the vessel wall against the thrombus, the direction of which depends on the difference between the two principal forces. These two secondary forces are not very effective because of the viscoelastic character of the thrombus. In order to effectively remove the thrombus, the suction negative pressure amplitude as high as possible is needed under the condition that mechanical damage to the vascular wall is not caused, so as to counter the driving force generated by the blood pressure of the inner cavity of the proximal blood vessel and the secondary friction force of the vascular wall and complete the thrombus removal as soon as possible. Due to the size limitations of the internal diameters of blood vessels and catheters and the limitations of the ultimate vacuum degree that current aspiration devices can produce, current aspiration thrombolysis operations do not guarantee that complete thrombolysis can be successfully achieved every time an operation is performed, which has become one of the bottlenecks that restrict aspiration thrombolysis techniques.
Disclosure of Invention
The utility model provides a suction catheter with an auxiliary flow inner tube, which is used for directly recovering blood oxygen supply at the distal end of an embolism and expanding blood volume to promote and accelerate the process of removing the embolism by suction.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the suction catheter with the auxiliary flow inner tube comprises a suction catheter and the auxiliary flow inner tube, wherein the auxiliary flow inner tube is movably sleeved in the suction catheter, the length of the auxiliary flow inner tube is slightly longer than that of the suction catheter, the far end of the auxiliary flow inner tube is provided with a developing head, and a plurality of outflow holes are uniformly arranged on the side wall of the far end tube.
Further, the outer diameter of the auxiliary flow inner pipe is 1/5-1/3 of the inner diameter of the suction catheter.
Furthermore, the auxiliary flow inner tube is a hollow tubule made of block polyether amide resin, polyimide, polytetrafluoroethylene and other materials.
Further, the developing head at the distal end of the auxiliary flow inner tube is made of platinum iridium alloy, tungsten powder and the like.
A suction and removal plug system comprises a suction passage, an auxiliary flow passage and the suction catheter with the auxiliary flow inner pipe, wherein the suction passage, the auxiliary flow passage and the suction catheter with the auxiliary flow inner pipe are connected through Y-shaped three-way connectors.
Further, the suction passage comprises a vacuum pump, a negative pressure meter and a buffer bottle which are sequentially connected through pipelines.
Further, the suction passage comprises a large-caliber syringe and a three-way luer connector which are sequentially connected through pipelines.
Further, a gas circuit filter is connected between the buffer bottle and the negative pressure meter.
Further, the auxiliary flow channel comprises a liquid storage tank, a filter, an auxiliary flow pump and a positive pressure meter which are sequentially connected through pipelines.
Further, the auxiliary flow pump is any one of a rotor pump, a vane pump and a peristaltic pump.
Compared with the prior art, the utility model has the beneficial effects that:
the auxiliary flow inner tube is additionally arranged in the inner cavity of the conventional suction catheter, and the high-oxygen liquid is infused into the distal end of the thrombus through the auxiliary flow inner tube before the thrombus is cleared, so that on one hand, the blood oxygen supply of the distal end of the thrombus can be directly restored to effectively relieve the tissue hypoxia state at the downstream of the embolism, on the other hand, the pressure in the inner cavity of the blood vessel can rise along with the infusion of the liquid at the distal end of the thrombus, and the rebound force for pushing the thrombus to the suction catheter can be formed at the distal end of the thrombus, so that the rapid completion of the suction and removal of the thrombus is effectively promoted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the force on thrombus with a conventional aspiration catheter;
FIG. 2 is a schematic view of a suction catheter with an auxiliary flow inner tube of the present utility model;
FIG. 3 is a schematic illustration of the force on thrombus with the present utility model;
FIG. 4 is a schematic diagram of a suction debugging system using vacuum pump and auxiliary flow pump drive;
FIG. 5 is a schematic diagram of a suction debugging system using a large bore syringe and auxiliary flow pump drive;
in the figure: 1-large caliber injector, 2-three-way luer connector, 3-vessel inner cavity, 4-suction catheter, 5-Y-shaped three-way connector, 6-buffer bottle, 7-auxiliary flow inner tube, 8-outflow hole, 9-developing head, 10-thrombus, A-auxiliary flow passage, B-suction passage, 11-liquid storage tank, 12-filter, 13-auxiliary flow pump, 14-positive pressure meter, 15-vacuum pump and 16-negative pressure meter.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
In the description of the embodiments of the present application, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is conventionally put in use of the product of the application, or the orientation or positional relationship that is conventionally understood by those skilled in the art, merely for convenience of describing the present application and simplifying the description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In the description of the embodiments of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Thrombus is a viscoelastic material that exhibits the ability of a solid to maintain a shape and resist deformation when exposed to a small external force and for a short period of time, and fluid flow characteristics when exposed to a large external force or for a long period of time. Meanwhile, in the case of acute vascular embolic diseases, the collateral circulation near the embolic region is generally poor, so that the blood flow supply is lacking in the vascular lumen at the distal end of the thrombus, the blood pressure is very low, and effective force cannot be applied to the distal end of the thrombus.
As shown in fig. 2, a suction catheter with an auxiliary flow inner tube includes a suction catheter 4 and an auxiliary flow inner tube 7, wherein the distal end of the suction catheter 4, the auxiliary flow inner tube 7 and thrombus are defined, and the proximal end of the suction catheter near the operator is defined. The auxiliary flow inner tube 7 is movably sleeved in the suction catheter 4, and the length of the auxiliary flow inner tube is slightly longer than that of the suction catheter 4, so that the auxiliary flow inner tube is used for directly conveying high-oxygen liquid or normal saline to the distal end of thrombus through thrombus; the auxiliary flow inner pipe 7 is a hollow tubule made of block polyether amide resin, polyimide, polytetrafluoroethylene and other materials, and can be matched with various main flow suction catheters used clinically at present; the distal end of the auxiliary flow inner tube 7 is provided with a developing head 9 so as to observe the movement condition of the auxiliary flow catheter and the position of the head in the operation and help doctors judge whether the auxiliary flow catheter is pushed in place or not; the developing head 9 is made of platinum iridium alloy, tungsten powder and the like; the side wall of the distal end tube of the auxiliary flow inner tube 7 is uniformly provided with a plurality of outflow holes 8 for pouring the high oxygen liquid conveyed along the auxiliary flow inner tube 7 into the blood vessel cavity 3 at the distal end of thrombus.
When the auxiliary flow inner pipe 7 is thinner, the auxiliary flow inner pipe 7 can conveniently move freely in the inner cavity of the suction catheter 4 and can not prevent normal suction operation, but the high oxygen liquid can cause overlarge along-way pressure loss when being transported in the auxiliary flow inner pipe 7; the opposite is true when the secondary flow inner pipe 7 is thicker. The outer diameter of the auxiliary flow inner tube 7 is set to 1/5 to 1/3 of the inner diameter of the suction duct 4 under comprehensive consideration.
During the operation of pushing the aspiration catheter 4 to the proximal end of the thrombus, the main body of the auxiliary flow tube 7, including the head, remains inside the lumen of the aspiration catheter 4, so as not to interfere with the pushing of the catheter. After the aspiration catheter 4 is advanced into place, the head of the secondary flow lumen 7 may be further advanced to the vessel lumen 3 through the thrombus to the distal end of the thrombus, as shown in fig. 3.
Based on the suction catheter 4 described above, a suction debubbling system is provided, comprising a suction channel B, an auxiliary flow channel a and the suction catheter 4 described above with an auxiliary flow inner tube 7 connected by a Y-shaped three-way joint 5.
As shown in fig. 4, the suction passage B is a gas passage, and includes a vacuum pump 15, a negative pressure gauge 16, and a buffer bottle 6, which are connected in this order by pipes. The vacuum pump 15 is used as a suction power source to provide driving force for sucking the plug, and the vacuum pressure of the vacuum pump is adjustable to adapt to different suction force requirements; the negative pressure gauge 16 is used to accurately indicate the current suction pressure value; the buffer bottle 6 serves to collect and entrap thrombus and blood mixture entering the aspiration path B, preventing it from entering and contaminating the vacuum pump 15. If further protection of the vacuum pump 15 is required, a gas path filter may be additionally installed between the buffer bottle 6 and the negative pressure gauge 16 to filter out water vapor and maintain the dryness of the air entering the vacuum pump.
The auxiliary flow passage A is a liquid passage and comprises a liquid storage tank 11, a filter 12, an auxiliary flow pump 13 and a positive pressure meter 14 which are sequentially connected through pipelines. The liquid storage tank 11 is used for containing prepared perfusate, and the perfusate can be selected from high oxygen liquid or physiological saline. Wherein, the high oxygen liquid has good curative effect when being used for treating tissue hypoxia in the embolic diseases, and the high oxygen liquid is conveyed to the distal end of thrombus through the hollow pipeline of the auxiliary flow inner pipe 7 and the outflow hole 8, so that the effects of two aspects can be obtained: firstly, restoring oxygen supply to tissues at the downstream of the embolism part before thrombus is cleared; secondly, the blood volume in the blood vessel distal to the thrombus is expanded, and the blood pressure in the blood vessel lumen 3 distal to the thrombus is raised to facilitate the aspiration of the thrombus. Usually, the thrombus removal operation is quick and takes tens of minutes, and the thrombus removal operation is slow and takes a few hours, and oxygen supply to tissues at the downstream of the embolism part is restored through the auxiliary flow inner tube 7 before the embolism is opened, so that valuable time can be won for rescuing ischemic tissues, and the thrombus removal operation has a great promoting effect on functional recovery of patients. At the same time, by raising the blood pressure in the lumen 3 of the distal blood vessel of the thrombus to a normal blood pressure level by pouring a high oxygen fluid through the auxiliary flow tube 7, a beneficial and effective back-pushing force (shown by the black thick arrow in fig. 3) pushing the thrombus into the aspiration catheter 4 can be formed at the distal end of the thrombus, which constitutes another main force other than the aforementioned aspiration force (shown by the gray arrow in fig. 3) and the expulsion force (shown by the white arrow in fig. 3). Considering the blood pressure at the proximal and distal ends of the thrombus and the area of action thereof, it can be found that the back-pushing force is significantly greater than the aforementioned driving force and is opposite to the driving force, so that the back-pushing force generated by the infusion of the auxiliary flow inner tube 7 greatly improves the state of the thrombus removing force in the operation of removing the thrombus, can promote the process of removing the thrombus very effectively and significantly reduce the operation time. If the preparation of the hyperoxia solution is not easy in the operation, physiological saline can be used instead. Of course, this can only restore the blood pressure at the distal end of the thrombus, and does not provide an effective supply of oxygen to ischemic tissue. Even so, at least can effectively promote the process of removing the thrombus by suction and obviously shorten the operation time, and has good promotion effect on the operation effect. The filter 12 is used to filter out various impurities and bubbles that may be present, preventing them from entering the auxiliary flow pump 13. The auxiliary flow pump 13 may be a rotor pump, a vane pump, a peristaltic pump, or other common liquid delivery pumps, so long as it meets the requirements of medical cleanliness and biocompatibility. The positive pressure meter 14 is used for accurately displaying the blood pressure value output by the auxiliary flow pump 13, and an operator can adjust the working state of the auxiliary flow pump 13 by observing the reading of the positive pressure meter 14 so as to maintain the blood pressure output by the auxiliary flow pump 13 at a required level. For example, the reference value of the blood pressure is maintained at an arterial average blood pressure of 100mmHg or a pulsating blood pressure of 80mmHg to 120mmHg when the suction for removing the thrombus is applied to the cerebral infarction and the myocardial infarction. The perfusion pressure can be appropriately increased to compensate for the loss of the along-the-way pressure of the fluid flow in the secondary flow inner tube 7 or decreased to increase the safety of the surgical procedure as required in a specific operation.
Clinically, for the sake of simplifying equipment and facilitating operation, a large-caliber syringe 1 is often used to replace the vacuum pump 15 to generate suction negative pressure. As shown in fig. 5, the aspiration path B includes a large-caliber syringe 1 and a three-way luer 2 sequentially connected by a pipe. The three-way luer fitting 2 is used to temporarily close the aspiration path when the syringe barrel is full of aspiration fluid, and to resume aspiration after the syringe has been emptied.
The specific use process is as follows:
1. the suction channel B and the auxiliary flow channel A are prepared and connected according to the structure shown in FIG. 4 or FIG. 5 before the operation is started;
2. by adopting a proper intervention access way, the suction catheter 4 with the auxiliary flow inner tube 7 is pushed to the proximal end of thrombus by a guide wire and the like, and the head of the auxiliary flow inner tube 7 is kept from being exposed outside the head of the suction catheter 4 in the pushing process so as not to prevent the pushing of the suction catheter 4;
3. after the suction catheter 4 is pushed to the proximal end of the thrombus, the suction catheter 4 is kept still, then the position of the auxiliary flow inner tube 7 is judged by the developing head 9, and the auxiliary flow inner tube 7 is continuously pushed so that the head part of the auxiliary flow inner tube comprises the outflow hole 8 to penetrate through the thrombus to reach the distal end of the thrombus, and the position is shown in fig. 3;
4. reliably connecting the suction conduit 4 and the auxiliary flow inner pipe 7 with the suction passage B and the auxiliary flow passage A through the Y-shaped three-way joint 5 and checking the connection state;
5. starting an auxiliary flow pump 13 to start the pressurization of an auxiliary flow channel, observing the reading of a positive pressure meter 14, and keeping the reading in a normal blood pressure range;
6. starting the suction passage B, and generating the required suction pressure by operating the vacuum pump 15 or the large-caliber syringe 1 to start the suction plug removing operation;
7. after the thrombus is sucked, the power supply of the suction passage B and the auxiliary flow passage A is stopped, the auxiliary flow inner tube 7 is retracted until the head of the auxiliary flow inner tube 7 is completely hidden in the suction catheter 4, and then the auxiliary flow inner tube 7 and the suction catheter 4 are withdrawn from the body together;
8. and finishing the wound treatment and ending the operation.
Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. A suction catheter with an auxiliary flow inner tube, characterized in that: the device comprises a suction catheter and an auxiliary flow inner tube, wherein the auxiliary flow inner tube is movably sleeved in the suction catheter, the length of the auxiliary flow inner tube is slightly longer than that of the suction catheter, a developing head is arranged at the distal end of the auxiliary flow inner tube, and a plurality of outflow holes are uniformly arranged on the side wall of the distal end tube.
2. The aspiration catheter with auxiliary flow tube of claim 1, wherein: the outer diameter of the auxiliary flow inner pipe is 1/5-1/3 of the inner diameter of the suction catheter.
3. The aspiration catheter with auxiliary flow tube of claim 1, wherein: the auxiliary flow inner tube is a hollow tubule made of any one material of block polyether amide resin, polyimide and polytetrafluoroethylene.
4. The aspiration catheter with auxiliary flow tube of claim 1, wherein: the developing head at the far end of the auxiliary flow inner tube is made of any one of platinum iridium alloy and tungsten powder.
5. A suction debugging system, characterized by: comprises a suction passage, an auxiliary flow passage and a suction catheter with an auxiliary flow inner pipe which are connected through a Y-shaped three-way joint.
6. The aspiration thrombolysis system of claim 5 wherein: the suction passage comprises a vacuum pump, a negative pressure meter and a buffer bottle which are sequentially connected through pipelines.
7. The aspiration thrombolysis system of claim 6 wherein: and an air passage filter is connected between the buffer bottle and the negative pressure meter.
8. The aspiration thrombolysis system of claim 5 wherein: the suction passage comprises a large-caliber syringe and a three-way luer connector which are sequentially connected through a pipeline.
9. The aspiration thrombolysis system of any one of claims 5-8 wherein: the auxiliary flow channel comprises a liquid storage tank, a filter, an auxiliary flow pump and a positive pressure meter which are sequentially connected through pipelines.
10. The aspiration thrombolysis system of claim 9 wherein: the auxiliary flow pump is any one of a rotor pump, a vane pump and a peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321766340.6U CN220588319U (en) | 2023-07-06 | 2023-07-06 | Suction catheter with auxiliary flow inner tube and suction and thrombolysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321766340.6U CN220588319U (en) | 2023-07-06 | 2023-07-06 | Suction catheter with auxiliary flow inner tube and suction and thrombolysis system |
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| Publication Number | Publication Date |
|---|---|
| CN220588319U true CN220588319U (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321766340.6U Active CN220588319U (en) | 2023-07-06 | 2023-07-06 | Suction catheter with auxiliary flow inner tube and suction and thrombolysis system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220588319U (en) |
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2023
- 2023-07-06 CN CN202321766340.6U patent/CN220588319U/en active Active
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