CN217338717U - Suction catheter, liner tube and suction system comprising same - Google Patents
Suction catheter, liner tube and suction system comprising same Download PDFInfo
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- CN217338717U CN217338717U CN202121416642.1U CN202121416642U CN217338717U CN 217338717 U CN217338717 U CN 217338717U CN 202121416642 U CN202121416642 U CN 202121416642U CN 217338717 U CN217338717 U CN 217338717U
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- 208000007536 Thrombosis Diseases 0.000 claims abstract description 80
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 34
- 239000008280 blood Substances 0.000 claims abstract description 30
- 210000004369 blood Anatomy 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 13
- 238000012800 visualization Methods 0.000 claims description 2
- 210000002445 nipple Anatomy 0.000 claims 2
- 238000000034 method Methods 0.000 description 4
- 208000005189 Embolism Diseases 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 208000019553 vascular disease Diseases 0.000 description 2
- 206010008092 Cerebral artery thrombosis Diseases 0.000 description 1
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 208000001435 Thromboembolism Diseases 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model relates to the technical field of medical equipment, a suction catheter, bushing pipe and contain its suction system is disclosed. The catheter includes: the suction pipe comprises an upper suction pipe body, a one-way valve, a lower suction pipe body, a flexible sleeve and a suction pipe seat; the upper suction pipe body, the one-way valve, the lower suction pipe body and the suction pipe seat are sequentially connected to form a channel which can be switched on and off; the distal end of the lower suction pipe body is provided with thrombus filter meshes; the flexible sleeve is sleeved on the surface of the thrombus filter mesh; when negative pressure is formed in the channel, the channel is opened by the one-way valve, and the flexible sleeve is tightly coated on the surface of the thrombus filter mesh, so that thrombus in the blood vessel can be sucked into the lower suction pipe body; when positive pressure is formed in the channel, the one-way valve closes the channel, a gap communicated with the outside is formed between the flexible sleeve and the lower suction pipe body, and blood in the lower suction pipe body flows back into the blood vessel through the gap after being filtered by the thrombus filter mesh; the channel is also used to insert a liner to guide the catheter to the target thrombus site. The embodiment can more thoroughly remove thrombus in the blood vessel.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to suction catheter, bushing pipe and contain its suction system for take the thrombus in the blood vessel out to external, thereby treatment thromboembolism.
Background
Vascular disease has become the first fatal disease in our country, and vascular embolism has become a major factor in vascular disease. Especially, the new illness rate of patients suffering from cerebral arterial thrombosis, pulmonary embolism and lower limb venous embolism is over 500 ten thousand per year.
The existing suction system usually utilizes continuous negative pressure to draw thrombus and blood out of the body, and then a filter screen is used for observing the drawing condition of the thrombus, and the filtered blood can only be discarded. Because the blood loss of human body needs to be controlled within a certain range (such as within 400 ml) during the operation, when the blood loss is large and the operation needs to be finished, only part of thrombus may be extracted, and although the symptoms can be relieved, the thrombus in the blood vessel cannot be thoroughly cleared.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an aspiration catheter, a liner tube and an aspiration system including the same, which can continuously aspirate thrombus due to less blood loss in the aspiration process, so as to more thoroughly remove thrombus in the blood vessel and significantly improve the therapeutic effect.
In order to solve the above technical problem, in a first aspect, embodiments of the present invention provide a suction catheter, including: the suction pipe comprises an upper suction pipe body, a one-way valve, a lower suction pipe body, a flexible sleeve and a suction pipe seat;
the upper suction pipe body, the one-way valve, the lower suction pipe body and the suction pipe seat are sequentially connected and form a channel which can be switched on and off;
the distal end of the lower suction pipe body is provided with thrombus filter meshes;
the flexible sleeve is sleeved on the surface of the thrombus filter mesh;
when negative pressure is formed in the channel, the one-way valve opens the channel, and the flexible sleeve is tightly coated on the surface of the thrombus filter mesh, so that thrombus in the blood vessel can be sucked into the lower suction pipe body; when positive pressure is formed in the channel, the one-way valve closes the channel, a gap communicated with the outside is formed between the flexible sleeve and the lower suction pipe body, and blood in the lower suction pipe body flows back into the blood vessel through the gap after being filtered by the thrombus filter mesh;
the channel is also used to insert a liner to guide the aspiration catheter to a target thrombus site.
In addition, the check valve includes: the valve body extends towards the lower suction pipe body to form an elastic cover body, and the end part of the elastic cover body is provided with an opening which is closed in a natural state;
the opening opens to open the passage when the resilient cover is subjected to negative pressure and closes to close the passage when subjected to positive pressure.
In addition, the valve body and the elastic cover body are an integral piece.
In addition, the two ends of the one-way valve are provided with axial and level interfaces which are respectively used for connecting the upper suction pipe body and the lower suction pipe body.
In addition, the check valve, the upper suction pipe body and the lower suction pipe body are detachably connected;
or the one-way valve and the upper suction pipe body are integrally connected, and the one-way valve and the lower suction pipe body are detachably connected.
In addition, the suction catheter further comprises: the reciprocating suction device is connected with the side surface of the suction pipe seat and is used for providing negative pressure or positive pressure for the channel;
the outer end of the suction pipe seat is also provided with a sealing structure for sealing the channel.
In addition, the suction catheter further comprises a reciprocating suction device, the axial outer end of the suction tube seat is further provided with a joint, and the reciprocating suction device is connected with the suction tube seat through the joint and used for providing negative pressure or positive pressure for the channel.
In addition, the distal end of the upper suction pipe body is provided with a developing ring.
In a second aspect, an embodiment of the present invention provides a liner tube, including: a head end, a body and a liner seat; the head end, the body and the liner tube seat are connected in sequence;
the liner may be threaded within the passageway of the aspiration catheter as previously described to guide the aspiration catheter to a target thrombus site; the liner tube also includes a guide wire channel that runs through the head end, body, and liner tube seat.
In a third aspect, embodiments of the present invention provide a suction system comprising a suction catheter and a liner as described in any of the previous embodiments.
The embodiment of the utility model provides a but for prior art go up suction tube body, check valve, lower suction tube body and suction tube seat and link to each other and form the passageway of break-make, wear to locate this passageway with the bushing pipe, can utilize the bushing pipe guide suction pipe to reach target thrombus position. The far end of the lower suction pipe body is provided with thrombus filter meshes, the surface of the lower suction pipe body is coated with a flexible sleeve, when negative pressure is formed in the channel, the one-way valve is opened to open the channel, thrombus and blood in the blood vessel are sucked into the lower suction pipe body at the moment, and the flexible sleeve can tightly wrap the thrombus filter meshes under the action of the negative pressure, so that the blood in the blood vessel is prevented from entering the lower suction pipe body through the thrombus filter meshes; when the passageway forms the malleation, the passageway is closed to the check valve, form the clearance with the blood vessel intercommunication between flexible cover and the lower suction tube body, thrombus and blood in the lower suction tube body can't flow back to the blood vessel through the upper suction tube body in, and the internal blood of lower suction tube then can be discharged to the blood vessel through this clearance after the thrombus filters the mesh under the effect of malleation, realize blood recovery in the blood vessel, consequently, whole thrombus suction in-process blood loss volume is very few, thereby can continuously carry out the thrombus suction operation, more thoroughly clear away the thrombus in the blood vessel, show and improve treatment.
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 view of a suction catheter according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a check valve of a suction catheter according to an embodiment of the present invention;
FIG. 3 is a schematic view of the one-way valve of the suction catheter shown in FIG. 2 rotated 90 degrees;
fig. 4 is a schematic structural diagram of a liner tube according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a suction system according to a third embodiment of the present invention.
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.
Unless otherwise stated, reference to proximal and distal ends in the present disclosure has the same meaning in the orientation, i.e., in the use state, the distal end is the end away from the operator, the proximal end is the end close to the operator, and the operator controls the catheter at the proximal end.
Example 1
The embodiment of the utility model provides a suction catheter is provided. As shown in fig. 1, the suction catheter 1 includes: an upper suction pipe body 10, a one-way valve 12, a lower suction pipe body 13, a flexible sleeve 14 and a suction pipe base 15. The upper suction pipe body 10, the one-way valve 12, the lower suction pipe body 13 and the suction pipe base 15 are connected in sequence, and form a channel which can be opened and closed. The distal end of the lower suction tube body 13 is provided with thrombus filter mesh holes 130, and the surface of the thrombus filter mesh holes 130 is sleeved with the flexible sleeve 14. When negative pressure is formed in the channel, the one-way valve 12 opens the channel, and the flexible sleeve 14 is tightly coated on the surface of the thrombus filter mesh 130, so that thrombus in the blood vessel can be sucked into the lower suction pipe body 13; when positive pressure is formed in the channel, the one-way valve 12 closes the channel, a gap communicated with the outside is formed between the flexible sleeve 14 and the lower suction pipe body 13, and blood in the lower suction pipe body 13 is filtered by the thrombus filter mesh 130 and then flows back to the blood vessel through the gap; the channel is also used to insert a liner (see fig. 5) to guide the aspiration catheter to the target thrombus site.
As shown in fig. 2 and 3, in the present embodiment, the check valve 12 includes: the valve body 120, the valve body 120 extends towards the lower suction pipe body 12 to form an elastic cover 121, the end of the elastic cover 121 is provided with an opening 122 which is closed in a natural state, the opening 122 is opened to open the passage when the elastic cover 121 is subjected to negative pressure, and is closed to close the passage when the elastic cover 121 is subjected to positive pressure. As shown in fig. 3, the elastic cover 121 gradually converges from the bottom end connected to the valve body 120 to the end of the cover into a flat opening 122 extending in the radial direction of the passage, and the opening is closed when the cover 121 is not subjected to an external force. In this embodiment, the elastic cover 121 has an inwardly concave arc surface, and in other examples, the elastic cover 121 may also have an outwardly convex arc surface, which is not limited herein. In this embodiment, the valve body 120 and the elastic cover 121 may be a single piece. The one-way valve 12 may be made of a medical grade elastic material. When negative pressure is formed in the passage, the inner side of the elastic cover body 121 is elastically expanded under the action of pressure, at the moment, the opening 122 at the end part of the cover body 121 is expanded, and the opening 122 can be approximately circular when fully expanded, so that thrombus and the like can pass through the opening conveniently and smoothly; when positive pressure is formed in the passage, the outer side of the cover body 121 is subjected to pressure action to drive the opening 122 at the end part to be closed, so that the check valve 12 is in a closed state, and thrombus and the like in the lower suction pipe are prevented from flowing back to the blood vessel. It should be noted that, when the liner tube is inserted into the passage, the head end of the liner tube can penetrate through the opening, and the size of the opening 122 after the elastic deformation should ensure the smooth insertion and withdrawal of the liner tube body.
By way of example and not limitation, the one-way valve 12 is provided with axially flush ports 123, 124 at each end for connecting the upper suction tube body 10 and the lower suction tube body 13, respectively, to facilitate the upper and lower suction tube bodies being radially flush. Further, the one-way valve 12 and the upper and lower suction pipes 10 and 13 may be detachably connected to each other. Specifically, the check valve 12, the upper suction pipe 10 and the lower suction pipe 13 may be screwed, sleeved, etc., and the connection manner is not particularly limited as long as the air tightness and the connection reliability between the check valve and the upper suction pipe are ensured. It should be noted that, when the check valve is made of an elastic material, two ends of the valve body 120 of the check valve 12 may extend to form elastic connectors 123, 124, and at this time, the connectors 123, 124 may be respectively sleeved on the upper suction pipe body and the lower suction pipe body, but is not limited thereto. It will be appreciated that the one-way valve and the upper suction pipe body may be integrally connected, and the one-way valve and the lower suction pipe body may be detachably connected. Because adopt between lower suction pipe body and the check valve and can dismantle the connection, consequently can withdraw from the suction catheter to external when the internal thrombus volume of lower suction pipe is more as required, will suck pipe body and check valve separation down, will suck again after the thrombus wherein clears away and be connected lower suction pipe body and check valve, then send the suction catheter to the target thrombus position again and continue to aspirate until the thrombus suction finishes. In other examples, the one-way valve may be integrally connected to both the upper and lower suction tubes.
In this embodiment, the thrombus filter mesh 130 is provided at the distal end of the lower suction tube body 13. Wherein, the mesh shape of the thrombus filter mesh 130 can be round, oval, rectangle, rhombus, etc., and the mesh can be evenly distributed on the lower suction pipe body. It can be understood that the number of meshes and the size of the meshes of the thrombus filter mesh 130 can be set according to the requirement that the blood in the lower suction tube flows back into the blood vessel under the action of pressure, as long as the thrombus can be effectively filtered and intercepted and the blood can be ensured to quickly flow back into the blood vessel, and the thrombus filter mesh is not particularly limited herein.
In this embodiment, the flexible sleeve 14 is sleeved on the surface of the thrombus filter mesh 130, in order to prevent the flexible sleeve from displacing, two ends of the flexible sleeve can be respectively fixed on the one-way valve 12 and the lower suction tube body 13, and meanwhile, a gap communicated with the outside can be formed between the flexible sleeve 14 and the one-way valve 12 as well as between the flexible sleeve 14 and the lower suction tube body 13, so that blood in the lower suction tube body 13 can flow back to a blood vessel through the gap. The flexible cover 13 can be made of flexible membrane material, the diameter of flexible cover 13 can be slightly greater than the diameter of the lower suction pipe body 13, when negative pressure is formed in the channel, the flexible cover 14 is adsorbed on the surface of thrombus filter mesh 130 under the action of negative pressure, thereby tightly wrapping thrombus filter mesh 130, blood in the blood prevention trachea enters the lower suction pipe body 13 through thrombus filter mesh 130, when positive pressure is formed in the channel, the flexible cover 14 is separated from thrombus filter mesh 130 when expanding under the action of blood hydraulic pressure, and blood in the lower suction pipe body 13 can flow back to the blood vessel after being filtered by the thrombus filter mesh.
In this embodiment, the suction catheter 1 may further include: and a reciprocating suction device 16, wherein the reciprocating suction device 16 is connected with the side surface of the suction pipe seat 15 and is used for providing negative pressure or positive pressure for the channel. The outer end of the suction pipe base 15 is also provided with a sealing structure 150 for sealing the passage. Specifically, the reciprocating suction device 16 may include: suction tube 160 and aspirator 161. The suction tube 160 has both ends connected to the side surface of the suction tube holder 15 and the aspirator 161, and the aspirator 161 may be a syringe, for example. The outer end of the suction tube base 15 has an opening through which the liner tube can pass into the passage, and when the liner tube is withdrawn from the passage, in order to ensure airtightness of the passage, the outer end of the suction tube base is further provided with a sealing structure 150 for sealing the passage, and the sealing structure 150 may be a sealing plug or a sealing cover, which is not particularly limited herein.
As an alternative to the above described embodiment in which the reciprocating suction device 16 is connected to the suction tube holder 15, in some instances the axially outer end of the suction tube holder 15 is further provided with a connector by which the reciprocating suction device 16 can be connected to the suction tube holder for providing negative or positive pressure to the passageway. Since the joint at the axially outer end of the suction tube holder 15 is directly connected to the reciprocating suction device when the suction operation is performed, there is no need to additionally provide a sealing structure for sealing the joint.
Optionally, in this embodiment, the distal end of the upper suction tube body 10 is further provided with a visualization ring 11 to assist in locating the position of the suction catheter in the blood vessel.
Compared with the prior art, the embodiment of the utility model forms a channel which can be switched on and off by connecting the upper suction pipe body, the one-way valve, the lower suction pipe body and the suction pipe seat, the far end of the lower suction pipe body is provided with the thrombus filter mesh, and the surface of the lower suction pipe body is sleeved with the flexible sleeve; when making the passageway form the malleation through reciprocal suction device, the passageway is closed to the check valve, form the clearance with the blood vessel intercommunication between flexible cover and the lower suction tube body, thrombus and blood in the lower suction tube body can't flow back to the blood vessel through the upper suction tube body, and the internal blood of lower suction tube then can be discharged to the blood vessel through this clearance after filtering through the thrombus filter mesh under the effect of malleation again, realize blood recovery in the blood vessel, consequently, blood loss is very few in the whole thrombus suction process, thereby can continuously carry out the thrombus suction operation, more thoroughly clear away the thrombus in the blood vessel, show and improve treatment.
Example 2
The embodiment 2 of the utility model provides a bushing pipe. As shown in fig. 4, the liner 2 includes: a head end 20, a body 21, and a liner seat 22. The tip 20, the body 21, and the stem 22 are connected in this order. In this embodiment, the head end 20, the body 21, and the liner seat 22 may be a unitary piece. The liner 2 may be inserted into the passageway of an aspiration catheter as described in any of the previous embodiments to guide the aspiration catheter to a target thrombus site. The liner 2 further includes a liner interior cavity 23 that extends through the head end 20, the body 21, and the liner seat 22. The liner lumen 23 may serve as a guidewire channel. The head end 20 of the liner may be of an arcuate configuration, such as a tapered configuration, to facilitate guiding the aspiration catheter into the blood vessel. The outer diameter of the body 21 of the liner is adapted to correspond to the inner diameter of the passage to facilitate insertion and removal of the liner.
The utility model discloses the bushing pipe cooperates with the suction catheter of aforementioned embodiment, through the passageway with its insertion suction catheter to reach target thrombus position through its guide suction catheter, not only can guarantee that the blood loss is minimum, can more thoroughly clear away the thrombus to the external body moreover.
Example 3
The embodiment 3 of the utility model provides a suction system. As shown in fig. 5, the suction system comprises a suction duct 1 as described in example 2 and a liner 2 as described in example 3. Fig. 5 shows a state where the liner 2 is inserted into the suction duct 1.
With reference to fig. 1 and 5, a method for using a suction catheter system according to an embodiment of the present invention includes the following steps:
in the thrombus clearing interventional operation treatment, an instrument interventional channel is established in the femoral artery (vein) vessel through a puncture needle, a guide wire, a catheter and a small-size puncture sheath. The liner 2 is inserted into the channel of the aspiration catheter 1, guided by the guide wire to the target thrombus site, and then the liner 2 is withdrawn and the channel is ensured to be sealed. The reciprocating suction device 16 is then operated to aspirate thrombus. When the reciprocating suction device 16 forms negative pressure in the channel, the one-way valve 12 opens the channel, the flexible sleeve 14 tightly covers the thrombus filter mesh 130, and thrombus and the like are sucked into the lower suction pipe body 13 at the moment, and blood in the blood vessel does not enter the lower suction pipe body 13 through the thrombus filter mesh 130; when the reciprocating suction device 16 forms positive pressure in the channel, the one-way valve 12 closes the channel, and at the moment, blood in the lower suction pipe body 13 is filtered by the thrombus filter mesh 130 under the action of pressure and then flows back to the blood vessel through the gap between the flexible sleeve and the lower suction pipe body, so that the blood in the blood vessel is recovered; the reciprocating suction device 16 is repeatedly operated until the thrombus is completely sucked. When the lower suction pipe body 13 is fully sucked, the suction catheter 1 can be retracted, the upper suction pipe body 10 is exposed, the check valve 12 is separated from the upper suction pipe body 10, then the lower suction pipe body 13 is separated from the check valve 12, the upper suction pipe body 10 and the lower suction pipe body 13 are connected with the check valve 12 after thrombi in the lower suction pipe body 13 are removed, the suction catheter 1 is conveyed to a target thrombus position again, and then the thrombus suction is continued until the thrombi are completely sucked and retreat out of the suction catheter.
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 (10)
1. An aspiration catheter, comprising: the suction pipe comprises an upper suction pipe body, a one-way valve, a lower suction pipe body, a flexible sleeve and a suction pipe seat;
the upper suction pipe body, the one-way valve, the lower suction pipe body and the suction pipe seat are sequentially connected and form a channel which can be switched on and off;
the distal end of the lower suction pipe body is provided with thrombus filter meshes;
the flexible sleeve is sleeved on the surface of the thrombus filter mesh;
when negative pressure is formed in the channel, the one-way valve opens the channel, and the flexible sleeve is tightly coated on the surface of the thrombus filter mesh, so that thrombus in the blood vessel can be sucked into the lower suction pipe body; when positive pressure is formed in the channel, the one-way valve closes the channel, a gap communicated with the outside is formed between the flexible sleeve and the lower suction pipe body, and blood in the lower suction pipe body flows back into the blood vessel through the gap after being filtered by the thrombus filter mesh;
the passageway is also used to insert a liner to guide the aspiration catheter to a target thrombus site.
2. The suction catheter of claim 1, wherein the one-way valve comprises: the valve body extends towards the lower suction pipe body to form an elastic cover body, and the end part of the elastic cover body is provided with an opening which is closed in a natural state;
the opening opens to open the passage when the resilient cover is subjected to negative pressure and closes to close the passage when subjected to positive pressure.
3. The suction catheter of claim 2, wherein the valve body and the elastomeric cover are a unitary piece.
4. The suction catheter as claimed in claim 1, wherein the check valve has axially flush ports at both ends for connecting the upper and lower suction tubes, respectively.
5. The suction catheter of claim 4, wherein said one-way valve and said upper and lower suction tube bodies are removably connected;
or the one-way valve and the upper suction pipe body are integrally connected, and the one-way valve and the lower suction pipe body are detachably connected.
6. The aspiration catheter of claim 1, further comprising: the reciprocating suction device is connected with the side surface of the suction pipe seat and is used for providing negative pressure or positive pressure for the channel;
the outer end of the suction pipe seat is also provided with a sealing structure for sealing the channel.
7. The suction catheter as claimed in claim 1, further comprising a reciprocating suction device, the suction tube base further being provided at an axially outer end thereof with a nipple, the reciprocating suction device being connected to the suction tube base through the nipple for providing negative or positive pressure to the passageway.
8. The suction catheter of claim 1, wherein said upper suction tube body distal end is provided with a visualization ring.
9. A liner tube, comprising: a head end, a body and a liner seat; the head end, the body and the liner tube seat are connected in sequence;
the liner is disposable within the passageway of the aspiration catheter of any one of claims 1-8 to guide the aspiration catheter to a target thrombus location;
the liner also includes a liner lumen that extends through the head end, body, and liner seat.
10. A suction system comprising a suction duct according to any of claims 1 to 8 and a liner according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121416642.1U CN217338717U (en) | 2021-06-24 | 2021-06-24 | Suction catheter, liner tube and suction system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121416642.1U CN217338717U (en) | 2021-06-24 | 2021-06-24 | Suction catheter, liner tube and suction system comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217338717U true CN217338717U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121416642.1U Active CN217338717U (en) | 2021-06-24 | 2021-06-24 | Suction catheter, liner tube and suction system comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217338717U (en) |
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2021
- 2021-06-24 CN CN202121416642.1U patent/CN217338717U/en active Active
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