CN209884994U - Large lumen catheter and system thereof - Google Patents
Large lumen catheter and system thereof Download PDFInfo
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- CN209884994U CN209884994U CN201821233997.5U CN201821233997U CN209884994U CN 209884994 U CN209884994 U CN 209884994U CN 201821233997 U CN201821233997 U CN 201821233997U CN 209884994 U CN209884994 U CN 209884994U
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Abstract
The utility model relates to the technical field of medical equipment, especially, relate to a big chamber pipe and system thereof. The large-cavity catheter is applied to thrombus suction and comprises a catheter outer wall; a first chamber and a second chamber are arranged inside the outer wall of the conduit; the first cavity and the second cavity both extend along the axial direction of the catheter, and the first cavity and the second cavity are not communicated with each other; the first chamber is used for sucking thrombus, and the second chamber is used for inserting a guide wire; the included angle between the tail end face of the guide pipe and the axial direction of the guide pipe is 30-60 degrees. The large-cavity catheter system comprises a guide wire and the large-cavity catheter; the guidewire is insertable into the second lumen. The utility model aims to provide a big chamber pipe and system thereof to solve the big chamber pipe that exists among the prior art technical problem such as expensive, need withdraw the seal wire when the suction operation.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a big chamber pipe and system thereof.
Background
At present, a great number of patients with venous thrombosis, acute arterial thromboembolism and other related diseases need thrombus suction treatment.
In the prior art, the mainstream thrombus aspiration catheter is expensive, so that the clinical application of the thrombus aspiration catheter is limited, and the economic burden of a patient is increased. The traditional large-cavity catheter for thrombus suction is a single-cavity system, the using method comprises the steps of inserting a blood vessel sheath after puncturing the blood vessel, inserting the large-cavity catheter to a thrombus plane under the guidance of a guide wire, connecting the large-cavity catheter to the tail end of the large-cavity catheter by a 20ml injector under the perspective of DSA (digital subtraction angiography) for thrombus suction, and withdrawing the guide wire from the large-cavity catheter for ensuring the suction effect when the thrombus suction operation is performed; the large-cavity catheter is not beneficial to the propulsion and position adjustment of the large-cavity catheter for long-section lesions, occlusive lesions and lesions requiring 'mountain-turning' or 'relay' for poor approach, the overall stability of the large-cavity catheter is reduced, the possibility that the large-cavity catheter generates displacement to cause injury of the vessel wall and influence on the suction effect is increased, and the operation is complicated and the time is wasted due to the repeated insertion and retraction of the guide wire.
Accordingly, the present application provides a new large lumen catheter and a system thereof, which can reduce the price of the large lumen catheter and can improve the stability and safety of the large lumen catheter suction operation without withdrawing the guide wire during the suction operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a large-cavity catheter to solve the technical problems that the large-cavity catheter existing in the prior art is expensive in price, and a guide wire needs to be withdrawn when the suction operation is carried out.
The utility model also aims to provide a large-cavity catheter system to solve the technical problems existing in the prior art that the large-cavity catheter is expensive, and the guide wire needs to be withdrawn when the suction operation is carried out.
Based on the first purpose, the large-cavity catheter provided by the utility model is applied to thrombus suction; the catheter includes a catheter outer wall; a first chamber and a second chamber are arranged inside the outer wall of the conduit;
the first cavity and the second cavity both extend along the axial direction of the catheter, and the first cavity and the second cavity are not communicated with each other;
the first chamber is used for sucking thrombus, and the second chamber is used for inserting a guide wire;
the included angle between the tail end face of the guide pipe and the axial direction of the guide pipe is 30-60 degrees.
The preferable technical proposal of the utility model is that the inner part of the outer wall of the conduit is provided with the inner wall of the conduit, and the inner wall of the conduit divides the inner cavity of the outer wall of the conduit into the first cavity and the second cavity; and/or a first conduit inner wall and a second conduit inner wall are arranged inside the conduit outer wall, the first conduit inner wall forms the first chamber, the second conduit inner wall forms the second chamber, the first conduit inner wall can rotate around the axis of the first conduit inner wall, and the first chamber is positioned outside the second chamber;
the included angle between the tail end face of the guide pipe and the axial direction of the guide pipe is 42-50 degrees.
The utility model adopts the preferable technical proposal that the head end of the outer wall of the conduit is provided with a first connecting joint and a second connecting joint;
the first connecting joint is detachably communicated with the first chamber;
the second connecting joint is detachably communicated with the second cavity.
The preferred technical scheme of the utility model is that the first connecting joint is provided with a first locking device which is used for controlling the on-off of the pipeline of the first connecting joint;
the second connecting joint is provided with a second locking device, and the second locking device is used for controlling the on-off of a pipeline of the second connecting joint.
The preferred technical proposal of the utility model is that the large-cavity conduit also comprises an inflation conduit which extends along the axial direction of the conduit;
the tail end of the outer wall of the conduit is provided with an inflatable air bag; the inflatable balloon is in communication with the inflation conduit.
The utility model adopts the preferable technical proposal that the head end of the outer wall of the conduit is provided with a third connecting joint; the third connecting joint is detachably communicated with the inflation conduit;
the third connecting joint is provided with a third locking device, and the third locking device is used for controlling the on-off of a pipeline of the third connecting joint.
The preferred technical proposal of the utility model is that the specification and model of the outer wall of the conduit is 8F, 10F or 12F;
the outer wall of the catheter is made of medical silica gel or medical PU material.
Based on the second purpose, the utility model provides a large-cavity catheter system, which comprises a guide wire and the large-cavity catheter;
the guidewire is insertable into the second lumen;
the first chamber is in communication with a syringe or aspirator.
The utility model has the preferred technical proposal that the large-cavity catheter system is characterized by comprising a three-way joint;
the first end of the three-way joint is communicated with the injector or the aspirator, the second end of the three-way joint is communicated with the first chamber, and the third end of the three-way joint can be communicated with the heparin cap.
The preferred technical proposal of the utility model is that one end of the injector far away from the injection port is provided with an injection locking device; the injection locking device comprises a lock pin and a lock body inserted with the lock pin;
the lock body is fixedly arranged outside the injector;
the piston of the injector is provided with at least one pin hole which extends along the axial direction perpendicular to the injector;
the lock pin is insertable into the pin hole to lock the piston.
The utility model has the advantages that:
the utility model provides a large-cavity catheter, through setting up the first cavity and the second cavity, so that the cavity that the seal wire inserts the large-cavity catheter can be separated from the cavity of suction, and then can carry on the thrombus suction operation, need not withdraw from the guide wire in the large-cavity catheter and can guarantee the suction effect too; particularly aiming at long-section lesions, occlusive lesions and lesions which need 'mountain-turning' or 'relay' due to poor approach, the two cavities of the large-cavity catheter improve the integral stability of the large-cavity catheter in the operation process to a certain extent, reduce the probability that the large-cavity catheter generates displacement to cause damage to the vessel wall and influence the suction effect, and improve the safety performance of the operation; the guide wire does not need to be withdrawn, so that the operation time is saved to a certain extent, the operation steps are simplified, and the operation efficiency is improved. The large-cavity catheter has a simple structure, is convenient to manufacture and process, reduces the cost of the catheter for thrombus suction application, and increases the area of the tail end face of the catheter by the included angle of 30-60 degrees between the tail end face of the catheter and the axial direction of the catheter so as to ensure that thrombus is easier to suck in the first cavity.
The utility model provides a large-cavity catheter system, include the large-cavity catheter, can solve the large-cavity catheter that exists among the prior art technical problem such as expensive price, need withdraw the seal wire when the suction operation.
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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a large-lumen catheter according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a large-lumen catheter according to an embodiment of the present invention;
fig. 3 is a schematic partial perspective view of a large-lumen catheter according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a large-lumen catheter according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a large-lumen catheter of another structure according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a large-lumen catheter system according to a second embodiment of the present invention.
Icon: 100-large lumen catheter; 110-outer wall of the conduit; 120-a first chamber; 130-a second chamber; 140-inner wall of the conduit; 141-first conduit inner wall; 142-a second conduit inner wall; 150-a first connection joint; 151-first locking means; 160-a second connection joint; 161-a second locking device; 170-an inflation conduit; 180-an inflatable air bag; 190-a third connection joint; 191-a third locking means; 200-a syringe; 210-injection locking means; 211-a locking pin; 212-a lock body; 220-a piston; 221-pin holes; 300-three-way joint.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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 terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1-5, the present embodiment provides a large lumen catheter; FIGS. 1 and 2 are schematic structural views of two configurations of a large-lumen catheter provided in this embodiment; FIG. 3 is a schematic partial perspective view of the large-lumen catheter provided in this embodiment, which is shown as the tail end of the large-lumen catheter; fig. 4 and 5 are schematic cross-sectional views of two configurations of the large-lumen catheter provided in this embodiment.
Referring to fig. 1-5, the large-lumen catheter provided by the embodiment is applied to thrombus aspiration, and is particularly suitable for thrombus aspiration treatment needed by a large number of patients with venous thrombosis, acute arterial thromboembolism and other related diseases.
The large-cavity catheter (hereinafter referred to as catheter) includes a catheter outer wall 110; the interior of the catheter outer wall 110 is provided with a first chamber 120 and a second chamber 130.
The first chamber 120 and the second chamber 130 both extend in the axial direction of the outer wall 110 of the conduit, i.e. the first chamber 120 and the second chamber 130 both extend in the axial direction of the conduit; the first chamber 120 and the second chamber 130 are not communicated with each other. Optionally, a guidewire can be inserted into the second lumen 130; so that the large-cavity catheter can be inserted to a preset position through the guidance of the guide wire; optionally, the first chamber 120 can be used to aspirate thrombus.
Optionally, the trailing face of the catheter is angled 30 ° to 60 ° from the axial direction of the catheter to increase the area of the trailing face of the catheter to make it easier for the first chamber 120 to aspirate thrombi. For example, the angle between the tail end face of the duct and the axial direction of the duct is 30 °, 35 °, 40 °, 45 °, 55 °, 60 °, 42 ° -50 °, 40 ° -50 °, 45 ° -60 °, and so on.
In the large-cavity catheter in the embodiment, the first cavity 120 and the second cavity 130 are arranged, so that the cavity for inserting the guide wire into the large-cavity catheter and the cavity for sucking can be separated, and the suction effect can be ensured without withdrawing the guide wire from the large-cavity catheter during the operation of sucking thrombus; particularly aiming at long-section lesions, occlusive lesions and lesions which need 'mountain-turning' or 'relay' due to poor approach, the two cavities of the large-cavity catheter improve the integral stability of the large-cavity catheter in the operation process to a certain extent, reduce the probability that the large-cavity catheter generates displacement to cause damage to the vessel wall and influence the suction effect, and improve the safety performance of the operation; the guide wire does not need to be withdrawn, so that the operation time is saved to a certain extent, the operation steps are simplified, and the operation efficiency is improved. The large-cavity catheter has a simple structure, is convenient to manufacture and process, and reduces the cost of the catheter for thrombus suction application; the included angle between the tail end face of the catheter and the axial direction of the catheter is 30-60 degrees to increase the area of the tail end face of the catheter, so that thrombus can be sucked in the first chamber 120 more easily.
The large-cavity catheter is an economical, convenient and effective suction system, and can help patients needing thrombus suction treatment to achieve a satisfactory treatment effect while reducing economic burden to a certain extent.
The large-cavity catheter comprises the double cavities, and the guide wire does not need to be withdrawn during suction operation, so that the overall stability of the large-cavity catheter in the operation process is ensured to a certain extent, the operation safety is improved, and the suction operation is more targeted. The large lumen catheter may improve the success rate of treatment under certain conditions, for example, for occlusive lesions, the guidewire may "anchor" the large lumen catheter at the level of the occlusive lesion after the occlusive lesion, increasing the success rate of treatment of the occlusive lesion. For another example, the guide wire can be conveniently reserved after the large-cavity catheter finishes suction, convenience is provided for subsequent catheter replacement radiography, catheter thrombolysis, balloon dilatation and stent implantation, and for complex lesions, the reservation of the guide wire increases the success rate of subsequent treatment and shortens the time of overall treatment.
In an alternative of this embodiment, the interior of the outer conduit wall 110 is provided with an inner conduit wall 140; the inner conduit wall 140 divides the interior cavity of the outer conduit wall 110 into a first chamber 120 and a second chamber 130. Optionally, the conduit inner wall 140 extends in the axial direction of the conduit outer wall 110.
Wherein the inner conduit wall 140 divides the inner cavity of the outer conduit wall 110 into the first chamber 120 and the second chamber 130, for example, referring to fig. 4, the inner conduit wall 140 forms the second chamber 130, and the first chamber 120 is formed between the outer conduit wall 110 and the inner conduit wall 140; alternatively, the inner conduit wall 140 forms the first chamber 120 and the outer conduit wall 110 and the inner conduit wall 140 form the second chamber 130 therebetween; alternatively, the first chamber 120 and the second chamber 130 are formed between the outer conduit wall 110 and the inner conduit wall 140. Optionally, the material of the inner wall 140 of the catheter is medical silica gel or medical PU material.
Referring to fig. 5, in an alternative of the present embodiment, the first chamber 120 and the second chamber 130 arranged inside the outer conduit wall 110 may also be that the outer conduit wall 110 is internally provided with a first inner conduit wall 141 and a second inner conduit wall 142, the first inner conduit wall 141 forms the first chamber 120, the second inner conduit wall 142 forms the second chamber 130, the first inner conduit wall 141 can rotate around its axis, and the first chamber 120 is located outside the second chamber 130; alternatively, the second conduit inner wall 142 does not rotate when the first conduit inner wall 141 rotates about its axis.
Optionally, the material of the inner wall 141 of the first conduit is medical silica gel or medical PU material.
Optionally, the material of the inner wall 142 of the second conduit is medical silica gel or medical PU material.
In an alternative of this embodiment, the head end of the conduit outer wall 110 is provided with a first connection fitting 150 and a second connection fitting 160.
The first connector 150 is in removable communication with the first chamber 120; when the first chamber 120 is used for sucking thrombus, negative pressure is conveniently provided through the first connection joint 150 to suck thrombus and the like in a lesion area. Optionally, the first connection joint 150 communicates with the syringe 200 or the aspirator to aspirate thrombus through the syringe 200 or the aspirator. Alternatively, the first connection joint 150 is connected with the syringe 200 or the aspirator by a screw connection or a plug connection, etc.
The second connection joint 160 is in removable communication with the second chamber 130. When the second lumen 130 is used for insertion of a guide wire, insertion of the guide wire is facilitated by the second connector fitting 160.
In an alternative of this embodiment, the first connection joint 150 is provided with a first locking device 151, and the first locking device 151 is used for controlling the on-off of the pipeline of the first connection joint 150; the first locking device 151 is used to lock the pipeline path of the first connector 150, so as to control the opening and closing of the first chamber 120. When the first chamber 120 is used for sucking thrombus, the path of sucking the thrombus can be controlled by the first locking device 151.
The second connection joint 160 is provided with a second locking device 161, and the second locking device 161 is used for controlling the on-off of the pipeline of the second connection joint 160. The second locking device 161 is convenient for locking the pipeline passage of the second connecting joint 160, and further convenient for controlling the on-off of the second chamber 130. When the second chamber 130 is used for inserting the guide wire, the guide wire can be locked by the second locking device 161, so that the displacement of the guide wire is prevented, and the probability of the injury of the blood vessel wall caused by the displacement of the guide wire is reduced to a certain extent.
Alternatively, the first and second locking devices 151 and 161 may be, for example, a pipe clamp, a screw, or other devices for locking the first and second connection joints 150 and 160.
Referring to fig. 2, in an alternative to this embodiment, the large lumen catheter includes an inflation catheter 170, and the inflation catheter 170 extends along the axial direction of the outer catheter wall 110, i.e., the inflation catheter 170 extends along the axial direction of the catheter. The inflation conduit 170 may be disposed, for example, inside the conduit outer wall 110, or may be disposed outside the conduit outer wall 110. The inflation conduit 170 shown in fig. 2 is disposed outside of the conduit outer wall 110.
The tail end of the outer wall 110 of the catheter is provided with an inflatable air bag 180; the inflation balloon 180 is in communication with the inflation conduit 170. Through the inflatable air bag 180 and the inflatable catheter 170, the blood vessel can be enlarged at or close to the lesion area, so that thrombus can be conveniently sucked by the large-cavity catheter; in addition, the inflatable air bag 180 is attached to the wall of the blood vessel, the inflatable air bag 180 blocks the pipeline of the blood vessel along the axial direction of the blood vessel, so that thrombus can be sucked from the tail end of the outer wall 110 of the catheter under the action of negative pressure, and the thrombus can be sucked from the tail end of the large-cavity catheter under the action of negative pressure.
In an alternative of this embodiment, the head end of the conduit outer wall 110 is provided with a third connection fitting 190; the third connector 190 is in removable communication with the inflation conduit 170. The supply of air pressure to the inflatable balloon 180 through the inflation catheter 170 is facilitated by the third connector fitting 190 to enable the inflatable balloon 180 to expand.
Optionally, the third connection joint 190 is provided with a third locking device 191, and the third locking device 191 is used for controlling the on-off of the pipeline of the third connection joint 190. The third locking device 191 is convenient for locking the pipeline passage of the third connecting joint 190, and further convenient for controlling the on-off of the inflation conduit 170. For example, when the inflatable balloon 180 is expanded to open the blood vessel through the inflatable catheter 170, the third locking device 191 may be locked to block the air passage of the inflatable catheter 170, and thus the air passage of the inflatable balloon 180.
Alternatively, the third locking device 191 may be, for example, a pipe clamp, a screw, or other device for locking the third connection joint 190.
In an alternative of this embodiment, the duct outer wall 110 is sequentially provided with different color regions along the axial direction of the duct outer wall 110. By arranging the different color areas on the outer wall 110 of the catheter, an operating physician can clearly know the implantation depth of the large-cavity catheter, so that the improper implantation of the large-cavity catheter caused by the misoperation of the operating physician is reduced or avoided to a certain extent, and further the occurrence of related adverse medical events is reduced.
In alternatives to this embodiment, the outer conduit wall 110 is 8F, 10F, or 12F gauge.
Note that, the thickness of the catheter is generally indicated by F in medicine. F represents the number of millimeters of the outer circumference; is a unit of law. F is the abbreviation of english French, and the diameter 1F ≈ 0.33mm because the circumference 3F is 3mm and the circumference 3.14 × the diameter.
In an alternative of this embodiment, the material of the outer wall 110 of the catheter is silicone or PU material. Optionally, the outer wall 110 of the catheter is made of medical silica gel or medical PU material.
Example two
The second embodiment provides a large-cavity catheter system, the embodiment comprises the large-cavity catheter described in the first embodiment, the technical features of the large-cavity catheter disclosed in the first embodiment are also applicable to the embodiment, and the technical features of the large-cavity catheter disclosed in the first embodiment are not repeatedly described.
Fig. 6 is a schematic structural diagram of the large-lumen catheter system provided in this embodiment.
Referring to fig. 6, the large-lumen catheter system provided by the embodiment is applied to thrombus aspiration, and is particularly suitable for thrombus aspiration treatment required by a large number of patients with venous thrombosis, acute arterial thromboembolism and other related diseases; the large-lumen catheter system includes a guide wire (not shown) and a large-lumen catheter 100; a guidewire can be inserted into the second lumen 130. The first chamber 120 communicates with the syringe 200 or the aspirator, and the thrombus is suctioned through the syringe 200 or the aspirator.
Optionally, the large lumen catheter 100 system includes a three-way junction 300. The three-way joint 300 includes a first end, a second end, and a third end that communicate with each other.
The first end of the tee 300 is in communication with the syringe 200 or aspirator, the second end of the tee is in communication with the first chamber 120, and the third end of the tee is capable of being in communication with a heparin cap.
Optionally, an injection locking device 210 is arranged at one end of the injector 200 far away from the injection port; injection locking device 210 includes a locking pin 211 and a lock body 212 that is keyed to locking pin 211.
The lock body 212 is fixedly disposed outside the syringe 200;
the piston 220 of the syringe 200 is provided with at least one pin hole 221, the pin hole 221 extending in an axial direction perpendicular to the syringe; alternatively, the number of the pin holes 221 is one, and one pin hole 221 is provided at an end of the piston 220 near an injection port of the syringe 200.
The locking pin 211 can be inserted into the pin hole 221 to lock the piston 220. For example, when the syringe 200 aspirates thrombus, the piston is manually pulled by hand to form vacuum in the chamber of the syringe in a short time, and the thrombus is aspirated by the vacuum; the locking pin 211 is now inserted into the pin hole 221 to lock the piston 220, freeing the hand of the healthcare worker.
The system of the large-lumen catheter 100 in the present embodiment has the advantages of the large-lumen catheter 100 in the first embodiment, and can solve the technical problems of the prior art that the large-lumen catheter 100 is expensive, the guide wire needs to be withdrawn during the suction operation, and the like, and other advantages of the large-lumen catheter 100 disclosed in the first embodiment will not be described repeatedly.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A large-cavity catheter for thrombus suction is characterized by comprising a catheter outer wall; a first chamber and a second chamber are arranged inside the outer wall of the conduit;
the first cavity and the second cavity both extend along the axial direction of the catheter, and the first cavity and the second cavity are not communicated with each other;
the first chamber is used for sucking thrombus, and the second chamber is used for inserting a guide wire;
the included angle between the tail end face of the guide pipe and the axial direction of the guide pipe is 30-60 degrees;
the inflatable catheter extends along the axial direction of the catheter;
the tail end of the outer wall of the conduit is provided with an inflatable air bag; the inflatable balloon is in communication with the inflation conduit.
2. The large lumen catheter of claim 1, wherein the interior of the outer catheter wall is provided with an inner catheter wall that divides the interior cavity of the outer catheter wall into the first chamber and the second chamber; or a first conduit inner wall and a second conduit inner wall are arranged inside the conduit outer wall, the first conduit inner wall forms the first chamber, the second conduit inner wall forms the second chamber, the first conduit inner wall can rotate around the axis of the first conduit inner wall, and the first chamber is positioned outside the second chamber;
the included angle between the tail end face of the guide pipe and the axial direction of the guide pipe is 42-50 degrees.
3. The large lumen conduit of claim 1 wherein the head end of the conduit outer wall is provided with a first connection fitting and a second connection fitting;
the first connecting joint is detachably communicated with the first chamber;
the second connecting joint is detachably communicated with the second cavity.
4. The large-lumen catheter according to claim 3, wherein the first connection joint is provided with a first locking device for controlling the switching of the pipeline of the first connection joint;
the second connecting joint is provided with a second locking device, and the second locking device is used for controlling the on-off of a pipeline of the second connecting joint.
5. The large-cavity conduit according to claim 1, wherein the head end of the conduit outer wall is provided with a third connection joint; the third connecting joint is detachably communicated with the inflation conduit;
the third connecting joint is provided with a third locking device, and the third locking device is used for controlling the on-off of a pipeline of the third connecting joint.
6. The large lumen catheter of claim 1, wherein the catheter outer wall is 8F, 10F or 12F;
the outer wall of the catheter is made of medical silica gel or medical PU material.
7. A large lumen catheter system comprising a guide wire and a large lumen catheter of any one of claims 1-6;
the guidewire is insertable into the second lumen;
the first chamber is in communication with a syringe or aspirator.
8. The large lumen catheter system of claim 7, comprising a tee fitting;
the first end of the three-way joint is communicated with the injector or the aspirator, the second end of the three-way joint is communicated with the first chamber, and the third end of the three-way joint can be communicated with the heparin cap.
9. The large-lumen catheter system according to claim 7, wherein an end of the injector away from the injection port is provided with an injection locking device; the injection locking device comprises a lock pin and a lock body inserted with the lock pin;
the lock body is fixedly arranged outside the injector;
the piston of the injector is provided with at least one pin hole which extends along the axial direction perpendicular to the injector;
the lock pin is insertable into the pin hole to lock the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233997.5U CN209884994U (en) | 2018-08-01 | 2018-08-01 | Large lumen catheter and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233997.5U CN209884994U (en) | 2018-08-01 | 2018-08-01 | Large lumen catheter and system thereof |
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| CN209884994U true CN209884994U (en) | 2020-01-03 |
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| CN201821233997.5U Active CN209884994U (en) | 2018-08-01 | 2018-08-01 | Large lumen catheter and system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173015A (en) * | 2018-08-01 | 2019-01-11 | 中国医学科学院北京协和医院 | Big cavities conduit pipe and its system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173015A (en) * | 2018-08-01 | 2019-01-11 | 中国医学科学院北京协和医院 | Big cavities conduit pipe and its system |
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