CN214805216U - A new type of intrahepatic and extrahepatic portal vein angiography - Google Patents
A new type of intrahepatic and extrahepatic portal vein angiography Download PDFInfo
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- CN214805216U CN214805216U CN202120474136.1U CN202120474136U CN214805216U CN 214805216 U CN214805216 U CN 214805216U CN 202120474136 U CN202120474136 U CN 202120474136U CN 214805216 U CN214805216 U CN 214805216U
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Abstract
本实用新型公开了一种新型肝内外门静脉造影管路，新型肝内外门静脉造影管路包括静脉导管、穿刺针和造影剂输注管，静脉导管包括静脉导管本体和导管本体开关，导管本体开关设置于静脉导管本体上以控制液体在静脉导管本体内的流动。本实用新型的新型肝内外门静脉造影管路设置有静脉导管、穿刺针和两种造影剂输注管，组成部件之间能够相匹配地快速连接和拆卸，能够方便快捷地更换造影剂输注管以分别用于肝内门静脉造影、肝外门静脉造影和门静脉压力测量，操作方便，提高造影成功率，降低造影难度和出血风险，能够缩短造影操作时间，降低患者痛苦和增强肝内外门静脉显影效果，以利于肝内外门静脉疾病的诊断和治疗。
The utility model discloses a novel intrahepatic and extrahepatic portal vein angiography pipeline. The novel intrahepatic and extrahepatic portal vein imaging pipeline includes an intravenous catheter, a puncture needle and a contrast agent infusion tube. The intravenous catheter includes an intravenous catheter body and a catheter body switch. The catheter body switch is provided with on the venous catheter body to control the flow of fluid in the venous catheter body. The novel intrahepatic and extrahepatic portal vein angiography pipeline of the utility model is provided with a venous catheter, a puncture needle and two types of contrast medium infusion tubes. It can be used for intrahepatic portal vein angiography, extrahepatic portal vein angiography and portal vein pressure measurement respectively, which is convenient to operate, improves the success rate of angiography, reduces the difficulty of angiography and the risk of bleeding, shortens the operation time of angiography, reduces the pain of patients, and enhances the imaging effect of intrahepatic and extrahepatic portal veins. In order to facilitate the diagnosis and treatment of intrahepatic and extrahepatic portal vein diseases.
Description
Technical Field
The utility model relates to a medical apparatus technical field, concretely relates to novel inside and outside portal angiography pipeline of liver.
Background
Angiography belongs to an interventional detection method, during detection, a developer is injected into a blood vessel, and the characteristic that X-rays cannot penetrate through the developer is utilized, so that the angiopathy is diagnosed through an image displayed by the developer under the X-rays. Angiography is an auxiliary examination technology, is commonly used for diagnosis and treatment of various clinical diseases in the advanced period of the current technology, is helpful for doctors to find disease conditions in time, controls the progress of the disease conditions, and effectively improves the survival rate of patients. Hepatic portal vein angiography is a liver and portal vein system detection means, and patients cannot take heavy metal drugs within 1 week before examination, otherwise, the hepatic portal vein angiography causes great interference to radiography detection. The hepatic portal vein angiography is suitable for diagnosis and differential diagnosis of various liver and portal vein system diseases such as small liver cancer, liver cirrhosis regeneration nodules, portal vein cancer embolus, extrahepatic portal vein obstruction, portal vein hypertension, intrahepatic portal vein dysplasia, congenital portal shunt malformation, postoperative recurrence of liver cancer and the like.
At present when carrying out extrahepatic portal vein radiography or intrahepatic portal vein radiography and examining, many medical institutions use pipeline such as transfer line and pjncture needle cooperation in order to carry out work such as contrast medium injection, because of lacking the dedicated puncture catheter of unified radiography pipeline and portal vein, lead to connecting and mismatch, not only increased the time of radiography operation, because the utensil does not match moreover, have and cause the pipeline to break away from at the radiography in-process, the radiography is failed probably, makes the blood in the vein cause hemorrhagic risk through the pipeline refluence even. The factors lead to long contrast consumption time and unstable contrast result, and bring unnecessary pain and risk to patients. Therefore, how to design a complete set of novel intrahepatic and extrahepatic portal vein angiography pipeline suitable for intrahepatic and extrahepatic portal veins, can connect fast, safely and effectively when carrying out intrahepatic and extrahepatic portal angiography detection, and be convenient for carry out angiography detection is the present technical problem that needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a novel inside and outside portal angiography pipeline of liver to lack unified portal angiography pipe and connecting line among the solution prior art, lead to connecting and mismatch, cause and use inconvenient, connect unstable, radiography failure scheduling problem.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a novel inside and outside portal vein radiography pipeline of liver, novel inside and outside portal vein radiography pipeline of liver includes ductus venosus, pjncture needle and contrast medium infusion pipe, ductus venosus includes ductus venosus body and pipe body switch, pipe body switch set up in with control fluid on the ductus venosus body this internal flow of ductus venosus, ductus venosus body front end is provided with and is used for making the ductus venosus point end that the pjncture needle passed, ductus venosus body rear end is seted up and is used for connecting the first interface of contrast medium infusion pipe.
Furthermore, the venous catheter body is also provided with a connecting side tube, one end of the connecting side tube is connected with the venous catheter body in a communicating manner and is close to the first connecting port end, and the other end of the connecting side tube is provided with a second connecting port for connecting the contrast medium infusion tube; and the first connecting port and the second connecting port are respectively provided with a reinforcing connecting convex ring.
Further, the venous catheter also comprises a second connector switch, and the second connector switch is arranged on the connecting side pipe.
Furthermore, the venous catheter body is a plastic hose with a smooth outer wall, and the catheter body switch is a catheter clamp; the connecting side pipe is a plastic hard pipe with a smooth outer wall and is integrally formed with the intravenous catheter body, and the second connector switch is a rotary switch.
Furthermore, the puncture needle comprises a puncture needle main body and a puncture needle tail part, the puncture needle tail part is connected to the rear end of the puncture needle main body, and the front end of the puncture needle main body is provided with a tip head part; the intravenous catheter tip opening inner diameter is greater than the outer diameter of the tip head.
Further, the contrast agent infusion tube is a single-channel contrast agent infusion tube, a dual-channel contrast agent infusion tube or an injector.
Furthermore, the front end of the single-channel contrast agent infusion tube is provided with a liquid outlet end which is used for being inserted into the first connecting port, and the rear end of the single-channel contrast agent infusion tube is provided with a liquid inlet end which is used for being inserted into an injector or a portal vein pressure measuring tube; a reinforced connecting convex ring is arranged at the liquid inlet end; the single-channel contrast agent infusion tube further comprises a threaded connection tube which is used for being clamped outside the first connection port reinforcing connection convex ring, the threaded connection tube is arranged at the liquid outlet end and is sleeved outside the single-channel contrast agent infusion tube in a sliding mode, and the threaded connection tube is provided with an internal thread.
Further, the length of the single-channel contrast agent infusion tube is 30 cm.
Further, the two-channel contrast medium infusion tube comprises a first tube, a second tube, a third tube and a three-way switch, wherein the three-way switch is connected between the front end of the second tube, the front end of the third tube and the rear end of the first tube; the front end of the first tube body is provided with a first tube body liquid outlet end which is used for being inserted into the first connecting port, the rear end of the second tube body is provided with a second tube body liquid inlet end which is used for being inserted into an injector, and the rear end of the third tube body is provided with a third tube body liquid inlet end which is used for being inserted into the injector; the liquid inlet end of the second pipe body and the liquid inlet end of the third pipe body are respectively provided with a reinforced connecting convex ring; binary channels contrast medium infusion pipe still including be used for the joint in the outer threaded connection pipe of first interface reinforcement connection bulge loop, threaded connection pipe set up in first body goes out liquid outlet end and can fix with sliding around and outside the first body, threaded connection pipe is provided with the internal thread.
Further, the length of first body is 10cm, the length of second body and the third body is 30 cm.
The utility model has the advantages of as follows:
the utility model discloses inside and outside portal angiography pipeline of liver is provided with ductus venosus, pjncture needle and two kinds of contrast medium infusion pipes, can phase-matchd ground high-speed joint and dismantlement between the component part, can change contrast medium infusion pipe in order to be used for respectively intrahepatic portal angiography, extrahepatic portal angiography and portal vein pressure measurement, and convenient operation can shorten the radiography operating time, improves the radiography effect, reduces patient's misery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural view of a novel intravenous catheter in a hepatic portal angiography pipeline provided by the present invention;
FIG. 2 is a schematic structural view of a novel puncture needle in a hepatic portal vein angiography pipeline provided by the present invention;
fig. 3 is a schematic structural view of a single-channel contrast medium infusion tube in a novel intrahepatic and extrahepatic portal angiography pipeline provided by the present invention;
fig. 4 is a schematic structural view of a dual-channel contrast medium infusion tube in a novel intrahepatic and extrahepatic portal angiography pipeline provided by the present invention;
in the figure:
1. an intravenous catheter; 2. puncturing needle; 3. a single-channel contrast agent infusion tube; 4. a dual channel contrast agent infusion tube; 10. an intravenous catheter body; 11. an intravenous catheter tip; 12. a first connection port; 13. a second connection port; 14. a second connector switch; 15. a catheter body switch; 16. connecting a side pipe; 21. a puncture needle main body; 22. the tail part of the puncture needle; 31. a liquid outlet end; 32. a liquid inlet end; 41. a liquid outlet end of the first pipe body; 42. a three-way switch; 43. the liquid inlet end of the second pipe body; 44. a liquid inlet end of the third pipe body; 401. a first pipe body; 402. a second tube body; 403. a third tube.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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.
Example 1
The embodiment provides a novel hepatic and intrahepatic portal angiography pipeline, as shown in fig. 1-4, the novel hepatic and intrahepatic portal angiography pipeline comprises an intravenous catheter 1, a puncture needle 2 and a contrast medium infusion tube, the intravenous catheter 1 comprises an intravenous catheter body 10 and a catheter body switch 15, the catheter body switch 15 is arranged on the intravenous catheter body 10 to control the flow of liquid in the intravenous catheter body 10, the front end of the intravenous catheter body 10 is provided with an intravenous catheter tip 11 for enabling the puncture needle 2 to pass through, and the rear end of the intravenous catheter body 10 is provided with a first connection port 12 for connecting the contrast medium infusion tube.
The utility model discloses a novel inside and outside hepatic portal vein radiography pipeline is when being used for the extrahepatic portal vein radiography of this embodiment, the first step, after ligature mesentery upper vein branch vein near-end, insert pjncture needle 2 in the intracavity of ductus venosus 1, the branch blood vessel of mesentery upper vein is put into to the vein puncture pipe after ductus venosus 1 and pjncture needle 2 combination through the method of venipuncture, then withdraw from ductus venosus 1 intracavity with pjncture needle 2, only keep some at the head end of ductus venosus 1 in the vein, close duct body switch 15, avoid the pjncture needle to withdraw from the back because of the hemorrhage that the backflow of venous blood causes, then fix ductus venosus with the silk thread, be used for subsequent portal vein pressure measurement and radiography.
The novel inside and outside portal vein radiography pipeline of liver of this embodiment is when being used for the portal vein radiography in the liver, the first step, insert pjncture needle 2 in the intracavity of ductus venosus 1, the method that the venus puncture pipe after ductus venosus 1 and pjncture needle 2 combination passes through venipuncture is put into the umbilical vein of liver round ligament, then withdraw from ductus venosus 1 intracavity with pjncture needle 2, only keep some at the head end of ductus venosus 1 in the vein, close pipe body switch 15, avoid the pjncture needle to withdraw from the back because of the hemorrhage that venous blood backward flow arouses, then fix ductus venosus with the silk thread, be used for subsequent portal vein pressure measurement and radiography.
Intravenous catheter 1 can enough connect pjncture needle 2 to carry out venipuncture in order to put into intravenous catheter 1 matchingly in the novel inside and outside portal vein radiography pipeline of this embodiment to the first interface 12 of intravenous catheter 1 rear end can connect the contrast medium infusion pipe matchingly, in addition, can conveniently control the flow of liquid in intravenous catheter body 10 through catheter body switch 15, and convenient operation is convenient.
Example 2
As shown in fig. 1, the novel hepatic portal vein angiography line in embodiment 1, the intravenous catheter body 10 is further provided with a connection side tube 16, one end of the connection side tube 16 is communicatively connected to the intravenous catheter body 10 and is close to the first connection port 12, and the other end of the connection side tube 16 is provided with a second connection port 13 for connecting the contrast medium infusion tube; the first connecting port 12 and the second connecting port 13 are respectively provided with a reinforcing connecting convex ring.
Taking the reinforced connection convex ring of the second connection port 13 as an example, the reinforced connection convex ring is arranged outside the other end of the connection side pipe 16 and is integrally formed with the connection side pipe 16, and the reinforced connection convex ring of the second connection port 13 can be connected more firmly when other pipe bodies are connected into the second connection port 13 in an insertion manner, so that the other pipe bodies can be effectively prevented from falling off and sliding out.
The intravenous catheter 1 of the present embodiment is provided with two contrast agent injection nozzles: the first connecting port 12 and the second connecting port 13 can simultaneously inject two groups of pipelines to improve the injection speed of the contrast agent, and are used for realizing portal vein angiography by quickly injecting a large amount of contrast agent into the portal vein.
Example 3
As shown in fig. 1, the novel intrahepatic and extrahepatic portal angiography line according to embodiment 2, the intravenous catheter 1 further includes a second port switch 14, and the second port switch 14 is disposed on the connection side tube 16.
When contrast medium injection is required only by using the first connector 12, the second connector switch 14 may be closed, and when contrast medium injection is required simultaneously by using two sets of pipes, the second connector switch 14 may be opened, and the first connector 12 and the second connector 13 are connected to the contrast medium injection pipes, in short, the number of injection connectors to be used may be conveniently selected by providing the second connector switch 14.
Example 4
The novel intrahepatic and extrahepatic portal angiography pipeline as in embodiment 3, the intravenous catheter body 10 is a plastic hose with a smooth outer wall, and the catheter body switch 15 is a catheter clamp; the connection side tube 16 is a plastic hard tube with a smooth outer wall and is integrally formed with the intravenous catheter body 10, and the second connector switch 14 is a rotary switch.
The connecting side pipe 16 is a plastic hard pipe with a smooth outer wall and is integrally formed with the intravenous catheter body 10, so that the intravenous catheter body 10 and the whole connecting side pipe 16 are good in stability and durability, the catheter body switch 15 is a catheter clamp, the second connecting port switch 14 is a rotary switch, the intravenous catheter body 10 is controlled through the catheter clamp, liquid in the connecting side pipe 16 is controlled to flow through the rotary switch, the operation is convenient, the disassembly and assembly are convenient, and the bleeding caused by venous blood backflow in the operation is avoided by means of rapid control communication and closing.
Example 5
The novel intrahepatic and extrahepatic portal angiography pipeline according to embodiment 4, as shown in fig. 2, the puncture needle 2 includes a puncture needle main body 21 and a puncture needle tail 22, the puncture needle tail 22 is connected to the rear end of the puncture needle main body 21, and the front end of the puncture needle main body 21 is provided with a tip head; the intravenous catheter tip 11 has an internal diameter at the opening that is greater than the external diameter of the tip head.
In a preferred embodiment, the needle tip 22 is larger in size than the needle body 21 so that the needle tip 22 can be handled with a relatively easy hand.
Example 6
The novel intrahepatic and extrahepatic portal angiography line according to embodiment 5, as shown in fig. 3 and 4, the contrast agent infusion tube is a single-channel contrast agent infusion tube 3, a dual-channel contrast agent infusion tube 4 or an injector.
The intravenous catheter 1 described in the above embodiments can be universally connected to a single-channel contrast agent infusion tube 3, a dual-channel contrast agent infusion tube 4 or an injector, when performing extrahepatic portal angiography, the dual-channel contrast agent infusion tube 4 is connected to the first connection port 12 of the intravenous catheter 1, when performing intrahepatic portal angiography, the single-channel contrast agent infusion tube 3 is connected to the first connection port 12 of the intravenous catheter 1, that is, a set of novel extrahepatic and extrahepatic portal angiography pipelines simultaneously has extrahepatic portal angiography and intrahepatic portal angiography functions, and the connection switching is convenient and fast during use.
Example 7
As shown in fig. 3, the front end of the single-channel contrast medium infusion tube 3 is provided with a liquid outlet end 31 for being inserted into the first connection port 12, and the rear end of the single-channel contrast medium infusion tube 3 is provided with a liquid inlet end 32 for being inserted into an injector or a portal vein pressure measuring tube; the liquid inlet end 32 is provided with a reinforced connecting convex ring; the single-channel contrast agent infusion tube 3 further comprises a threaded connection tube which is used for being clamped outside the first connection port 12 reinforcing connection convex ring, the threaded connection tube is arranged at the liquid outlet end 31 and is sleeved outside the single-channel contrast agent infusion tube 3 in a sliding manner (limiting type front-back sliding manner), and an internal thread is arranged on the threaded connection tube.
Through set up the reinforcement at the oral area 32 and connect the bulge loop, when syringe or portal vein pressure-measuring pipe is pegged graft in the oral area 32, and the oral area 32 between be connected more firm, effectively prevent that syringe or portal vein pressure-measuring pipe from droing or the roll-off.
When the liquid outlet end 31 is connected to the first connection port 12, the liquid outlet end 31 is first inserted into the first connection port 12, and then the threaded connection pipe disposed at the liquid outlet end 31 is pushed forward and rotated, so that the internal thread of the threaded connection pipe is engaged with the reinforcing connection convex ring of the first connection port 12. Therefore, the liquid outlet end 31 is connected with the first connecting port 12 in a double manner, the connection between the liquid outlet end 31 and the first connecting port 12 is more stable, and the liquid outlet end 31 is effectively prevented from falling off from the first connecting port 12.
The length of the single-channel contrast agent infusion tube 3 is 30 cm.
The single-channel contrast medium infusion tube 3 of this embodiment can cooperate with the intravenous catheter 1 of embodiment 1 to carry out the intrahepatic portal angiography, finish the intrahepatic portal angiography in embodiment 1 after the first step, when the radiography, wash the inner chamber of single-channel contrast medium infusion tube 3 with heparin normal saline earlier, and remove the intracavity bubble, then be connected (there is a certain amount of contrast medium in the syringe) through the mode of plug with entering liquid mouth end 32 and a 50ml syringe, then be connected through threaded connection's mode with first interface 12 with liquid mouth end 31. The 50ml injector is fixed on an operation table of a high-pressure injection pump for experiments, corresponding parameters are set, and injection radiography is carried out.
In addition, the injector or the portal vein pressure measuring tube can be connected with the liquid inlet end 32 in a threaded manner, the single-channel contrast agent infusion tube 3 is conveniently and quickly connected with the venous catheter 1, the rear end of the single-channel contrast agent infusion tube 3 can be conveniently and quickly connected with the injector or the portal vein pressure measuring tube, and the components are simply and quickly connected and are easy to install and disassemble.
Example 8
The novel intrahepatic and extrahepatic portal angiography line according to embodiment 6, as shown in fig. 4, the two-channel contrast medium infusion tube 4 includes a first tube 401, a second tube 402, a third tube 403, and a three-way switch 42, where the three-way switch 42 is connected between a front end of the second tube 402, a front end of the third tube 403, and a rear end of the first tube 401; the front end of the first tube 401 is provided with a first tube outlet end 41 for being inserted into the first connector 12, the rear end of the second tube 402 is provided with a second tube inlet end 43 for being inserted into an injector, and the rear end of the third tube 403 is provided with a third tube inlet end 44 for being inserted into the injector; the liquid inlet end 43 of the second pipe body and the liquid inlet end 44 of the third pipe body are respectively provided with a reinforced connecting convex ring; binary channels contrast medium infusion pipe 4 still including be used for the joint in the outer threaded connection pipe of first interface 12 reinforcement connection bulge loop, threaded connection pipe set up in first body goes out liquid outlet end 41 and can fix with sliding around and outside first body 401, threaded connection pipe is provided with the internal thread.
By providing the reinforced connection convex ring at the liquid inlet end 43 of the second tube and the liquid inlet end 44 of the third tube, the connection is firmer when the injector is inserted into the liquid inlet end 43 of the second tube or the liquid inlet end 44 of the third tube.
When the first tube outlet 41 is connected to the first connector 12, the first tube outlet 41 is first inserted into the first connector 12, and then the threaded connection tube of the first tube outlet 41 is slid forward and rotated, so that the internal thread of the threaded connection tube is engaged with the reinforcing connection convex ring of the first connector 12. Therefore, the first tube outlet end 41 and the first connector 12 are connected in a dual manner, and the connection between the first tube outlet end 41 and the first connector 12 is more stable, so that the first tube outlet end 41 is effectively prevented from falling off from the first connector 12.
The length of the first pipe 401 is 10cm, and the lengths of the second pipe 402 and the third pipe 403 are 30 cm.
The dual-channel contrast medium infusion tube 4 of this embodiment can cooperate with the intravenous catheter 1 of embodiment 1 to carry out extrahepatic portal angiography, finish extrahepatic portal angiography in embodiment 1 after the first step, during the angiography, wash the inner chamber of the dual-channel contrast medium infusion tube 4 with heparin normal saline earlier, and remove the intracavity bubble, then be connected second body income liquid mouth end 43 and third body income liquid mouth end 44 respectively with a 50ml syringe through the mode of plug (there is a certain amount of contrast medium in the syringe), then be connected first body liquid mouth end 41 and first interface 12 through threaded connection's mode, two 50ml syringes are fixed on the high pressure syringe pump operation panel for experiments, set corresponding parameter, carry out the angiography.
The novel intrahepatic and extrahepatic portal angiography pipeline of this embodiment is provided with two-channel contrast medium infusion tube 4, and two-channel contrast medium infusion tube 4 is provided with three way switch 42 between first body 401 and second body 402, third body 403, can select simultaneously through adjusting three way switch 42 to communicate/close between first body 401 and the second body 402, communicate/close between first body 401 and the third body 403, and convenient operation is swift.
In the novel intrahepatic and extrahepatic portal vein angiography pipeline of the embodiment, the venous catheter 1 is a plastic hose with a smooth outer wall, different models are selected according to different punctured veins, and 12G and 16G catheters (the length of the catheter is 10cm) are generally selected according to different diameters of branch veins of a superior mesenteric vein during extrahepatic portal angiography; 20G, 22G and 24G catheters (catheter length 5cm) are generally selected for umbilical vein puncture when intrahepatic portal angiography is performed. The intravenous catheter tip 11 is the tip of an intravenous catheter, which is inserted into a vein. The first connector 12 is a connection part, and can be connected with a common syringe, the liquid outlet end 31 or the liquid outlet end 41 of the first tube body by a threaded connection or a plug-in connection. The second connector 13 is a connection part, can be connected with a common injector, the liquid outlet end 31 or the liquid outlet end 41 of the first tube body in a threaded connection or a plugging mode, and can be connected and closed with a channel of the second connector 13 through the second connector switch 14, and heparin normal saline is injected to avoid blood coagulation and catheter embolism during radiography or pressure measurement. The catheter body switch 15 is a catheter clamp that closes and releases the intravenous catheter 1.
The puncture needle 2 is a puncture needle tool matched with the venous catheter 1 and is used for venipuncture.
The outlet end 31 of the single-channel contrast medium infusion tube 3 may be threaded into the first connector port 12 to connect the single-channel contrast medium infusion tube 3 with the intravenous catheter 1. The inlet end 32 is connected to a conventional syringe (containing contrast medium) by insertion and removal. The single-channel contrast agent infusion tube 3 is used for intrahepatic portal vein radiography and is also used for measuring the pressure of intrahepatic portal veins and extrahepatic portal veins; when the portal vein pressure is measured, the liquid outlet end 31 is connected with the first connector 12, and the liquid inlet end 32 is connected with the piezometer tube. The length of the single-channel contrast agent infusion tube 3 is typically 30 cm.
The first tube outlet end 41 of the two-channel contrast medium infusion tube 4 can be screwed into the first connector port 12 to connect the two-channel contrast medium infusion tube 4 with the intravenous catheter 1. The three-way switch 42 is a switch for controlling the smoothness and the closing of the liquid inlet end 43 of the second tube body and the liquid inlet end 44 of the third tube body and the liquid outlet end 41 of the first tube body, generally controls the smoothness and the closing of a pipeline when the inner cavity of the two-channel contrast agent infusion tube 4 is flushed by heparin normal saline, avoids bubbles from generating, and can be controlled to be communicated and closed through the three-way switch 42 to enable the two-channel contrast agent infusion tube 4 to be changed between a single channel and the two-channel contrast agent infusion tube. The second tube inlet end 43 and the third tube inlet end 44 are connected to a common syringe by means of plugging. With respect to the length of the pipe: the length from the first tube liquid outlet end 41 to the three-way switch 42 is 10cm, and the length from the three-way switch 42 to the second tube liquid inlet end 43 and the length from the three-way switch 42 to the third tube liquid inlet end 44 are equal and 30 cm.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112914693A (en) * | 2021-03-04 | 2021-06-08 | 首都儿科研究所 | Novel intrahepatic and extrahepatic portal angiography pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112914693A (en) * | 2021-03-04 | 2021-06-08 | 首都儿科研究所 | Novel intrahepatic and extrahepatic portal angiography pipeline |
| CN112914693B (en) * | 2021-03-04 | 2025-07-25 | 首都儿科研究所 | Novel intrahepatic and extrahepatic portal vein radiography pipeline |
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