CN219921691U - Extracorporeal blood circulation assembly - Google Patents
Extracorporeal blood circulation assembly Download PDFInfo
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- CN219921691U CN219921691U CN202320274373.2U CN202320274373U CN219921691U CN 219921691 U CN219921691 U CN 219921691U CN 202320274373 U CN202320274373 U CN 202320274373U CN 219921691 U CN219921691 U CN 219921691U
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- cannula
- blood pump
- arterial
- venous
- outlet
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- 230000017531 blood circulation Effects 0.000 title claims abstract description 23
- 239000008280 blood Substances 0.000 claims abstract description 64
- 210000004369 blood Anatomy 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 230000010412 perfusion Effects 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 230000002439 hemostatic effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 5
- 210000001367 artery Anatomy 0.000 description 13
- 210000003462 vein Anatomy 0.000 description 12
- 238000002618 extracorporeal membrane oxygenation Methods 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- 210000005246 left atrium Anatomy 0.000 description 2
- 206010007556 Cardiac failure acute Diseases 0.000 description 1
- 206010051093 Cardiopulmonary failure Diseases 0.000 description 1
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000003157 atrial septum Anatomy 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 230000002612 cardiopulmonary effect Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 210000001147 pulmonary artery Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Landscapes
- External Artificial Organs (AREA)
Abstract
It is an object of the present utility model to provide an extracorporeal blood circulation assembly that saves surgical time and is simple to operate, comprising a venous cannula and an arterial cannula, the proximal end of the venous cannula extending to the blood pump and being directly connected to the inlet of the blood pump and/or the proximal end of the arterial cannula extending to the blood pump and being directly connected to the outlet of the blood pump. The venous cannula and the liquid inlet pipe in the prior art are integrated into an integral venous cannula, the liquid outlet pipe and the arterial cannula in the prior art are integrated into an integral arterial cannula, and the venous cannula and the arterial cannula are directly communicated with the inlet and the outlet of the blood pump, so that the step of connecting the venous cannula with the liquid inlet pipe and the step of connecting the liquid outlet pipe with the arterial cannula in the operation process is omitted, the corresponding time is saved, and the success rate of the operation is improved.
Description
Technical Field
The utility model relates to the technical field of extracorporeal blood circulation assistance, in particular to an extracorporeal blood circulation assembly.
Background
The tansymeart system is a short-term left atrium-aortic type auxiliary device, and the working principle is that a catheter is placed in the left atrium through atrial septum puncture, and an axial flow pump pumps blood out of the left atrium and returns the blood to the aorta to achieve the effect of heart assistance. The extracorporeal membrane oxygenation (ECMO) is an extracorporeal life support technology, can replace cardiopulmonary function, provides stable circulating blood volume for cardiopulmonary failure patients, timely and effectively recovers blood supply and oxygen supply of important organs such as heart, brain and the like, and wins time and opportunity for the treatment of critical patients. The two systems are mainly connected with the blood vessel of the patient by utilizing the artery and vein cannula, venous blood of the patient is led out of the body, changed into arterial blood, and then sent into the arterial system of the patient through the artery cannula, so that stable circulating blood volume is provided for the tissue and organ of the patient with heart-lung failure.
In the prior art, the pipeline of both the TandeHeart system and the ECMO system is shown in fig. 1, and comprises a liquid inlet pipe 2 and a liquid outlet pipe 3 which are directly connected with the inlet and the outlet of a pump 1, and a vein cannula 4 and an artery cannula 5 which are separately arranged. During operation, firstly, the vein cannula 4 is connected with a blood vessel of a patient, then the artery cannula is inserted into the artery of the patient, the vein cannula 4 and the artery cannula 5 are clamped by the hemostatic clamp to prevent blood from being sprayed out, the perfusion liquid is used for carrying out perfusion and exhaust on the pump 1, the liquid inlet pipe 2 and the liquid outlet pipe 3, after the exhaust, the clamp is used for clamping the liquid inlet pipe 2 and the liquid outlet pipe 3 to prevent gas from entering again, and at the moment, the vein cannula 4 and the liquid inlet pipe 2 are connected together, and the specific operation steps are as follows: one doctor holds the liquid inlet pipe 2 with one hand and holds the venous cannula 4 with the other doctor holds the syringe filled with perfusion liquid, the outlet of the syringe is aligned to the joint of the liquid inlet pipe 2 and the venous cannula 4, and the liquid inlet pipe 2 and the venous cannula 4 are connected together while perfusion is carried out; as is the connection of the outlet tube 3 to the arterial cannula 5. After connection, the clamp and the hemostatic forceps are opened, venous blood of the patient is led out of the body, becomes arterial blood, and is sent into the arterial system of the patient through the arterial cannula, so that stable circulating blood volume is provided for tissue organs of the patient suffering from heart-lung failure. In the above process, it is necessary to connect the venous cannula 4 with the liquid inlet tube 2 and the liquid outlet tube 3 with the arterial cannula 5 in the surgical process, which is very disadvantageous for the second-competing surgery, and at least two doctors are required to cooperate with each other when the two are connected, one doctor performs the connection operation and the other doctor fills the perfusate, and the operation is more complex.
Disclosure of Invention
The object of the present utility model is to provide an extracorporeal blood circulation assembly which saves operating time and is simple to operate.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: an extracorporeal blood circulation assembly comprising a venous cannula and an arterial cannula, the proximal end of the venous cannula extending to the blood pump and being directly connected to the inlet of the blood pump and/or the proximal end of the arterial cannula extending to the blood pump and being directly connected to the outlet of the blood pump.
And a perfusion liquid pipeline is arranged between the inlet and the outlet of the blood pump, and is independent of a blood circulation system formed by the venous cannula, the arterial cannula and the blood pump.
The perfusion liquid pipeline comprises a vein cannula and a first reversing valve and a second reversing valve which are respectively arranged on the artery cannula, the first reversing valve controls the inlet of the blood pump to be communicated with the far end of the vein cannula or the flushing pipeline of the perfusion liquid pipeline, and the second reversing valve controls the outlet of the blood pump to be communicated with the far end of the artery cannula or the flushing pipeline of the perfusion liquid pipeline.
The first reversing valve is arranged on a venous cannula adjacent to the inlet of the blood pump, and the second reversing valve is arranged on an arterial cannula adjacent to the outlet of the blood pump.
The flushing pipelines on the two reversing valves are respectively communicated with the inlet and the outlet of the perfusion fluid tank, and the upper part of the perfusion fluid tank is also provided with an exhaust valve.
A hemostatic clip is arranged on the venous cannula at the far side of the first reversing valve, and a hemostatic clip is also arranged on the arterial cannula at the far side of the second reversing valve.
In the scheme, the vein cannula and the liquid inlet pipe in the prior art are integrated into an integral vein cannula, the liquid outlet pipe and the artery cannula in the prior art are integrated into an integral artery cannula, and the vein cannula and the artery cannula are directly communicated with the inlet and the outlet of the blood pump, so that the step of connecting the vein cannula with the liquid inlet pipe and the liquid outlet pipe with the artery cannula in the operation process is omitted, the corresponding time is saved, and the success rate of the operation is improved.
Drawings
FIG. 1 is a schematic view of an extracorporeal blood circulation assembly of the prior art;
figure 2 is an interventional view of an extracorporeal blood circulation assembly of the prior art;
FIG. 3 is a schematic view of an extracorporeal blood circulation assembly according to the present utility model;
figure 4 is an interventional view of an extracorporeal blood circulation assembly of the present utility model.
Detailed Description
The utility model is discussed in detail below in connection with fig. 3 and 4 and the specific embodiment.
An extracorporeal blood circulation assembly comprising a venous cannula 10 and an arterial cannula 20, the proximal end of the venous cannula 10 extending to the blood pump 30 and being directly connected to an inlet of the blood pump 30, and/or the proximal end of the arterial cannula 20 extending to the blood pump 30 and being directly connected to an outlet of the blood pump 30. The venous cannula 4 and the liquid inlet pipe 2 in the prior art are integrated into an integral venous cannula 10, the liquid outlet pipe 3 and the arterial cannula 5 in the prior art are integrated into an integral arterial cannula 20, and the venous cannula 10 and the arterial cannula 20 are directly communicated with the inlet and the outlet of the blood pump 30, so that the step of connecting the venous cannula 4 with the liquid inlet pipe 2 and the liquid outlet pipe 3 with the arterial cannula 5 in the operation process is omitted, the corresponding time is saved, and the success rate of the operation is improved.
Whether it is the tademheart or the ECMO, bubbles exist in the blood pump 30 and the pipeline before use, on the one hand, the bubbles can cause air lock to obstruct the flow of blood, and more serious, if the bubbles enter into the blood vessel of a human body, a great amount of blood foam can appear along with the blood flow entering into the heart, and then the volume is enlarged, the pulmonary artery and branches thereof are blocked, so that the blood can not enter into the lung, serious hypoxia and ischemia are caused, coronary artery can be blocked, coronary circulation can be caused, serious cardiac dysfunction is caused, and finally acute heart failure can be caused, so that death is caused. A perfusion fluid line is thus provided between the inlet and the outlet of the blood pump 30, said perfusion fluid line being independent from the blood circulation system constituted by the venous cannula 10, the arterial cannula 20 and the blood pump 30. When the blood pump 30 is used, the blood pump 30 is communicated with the perfusate pipeline, the perfusate is utilized to discharge air bubbles at the shell of the blood pump 30 and the inlet and outlet of the blood pump 30, the blood pump 30 and the perfusate pipeline 40 are disconnected and connected to the whole test system after the air bubbles are discharged, and at the moment, the air bubbles are not generated in the shell of the blood pump 30 and at the inlet and outlet of the blood pump 30. The venous cannula 10 and the arterial cannula 20 are then inserted into the vein and artery of the human body, respectively.
In order to realize the switching of the blood pump 30 between the perfusate pipeline and the whole blood circulation system, the perfusate pipeline comprises a first reversing valve 41 and a second reversing valve 42 which are respectively arranged on the venous cannula 10 and the arterial cannula 20, the first reversing valve 41 controls the inlet of the blood pump 30 to be communicated with the far end of the venous cannula 10 or communicated with a flushing pipeline 43 of the perfusate pipeline, and the second reversing valve 42 controls the outlet of the blood pump 30 to be communicated with the far end of the arterial cannula 20 or communicated with the flushing pipeline 43 of the perfusate pipeline.
The most abundant bubbles are in the housing of the blood pump 30 and at the locations where the inlet and outlet of the blood pump 30 are connected to the venous cannula 10 and arterial cannula 20, so that the first diverter valve 41 is provided on the venous cannula 10 adjacent the inlet of the blood pump 30 and the second diverter valve 42 is provided on the arterial cannula 20 adjacent the outlet of the blood pump 30.
The flushing pipelines 43 on the two reversing valves are respectively communicated with the inlet and the outlet of the perfusion fluid tank, and the upper part of the perfusion fluid tank is also provided with an exhaust valve. The carried bubbles are discharged from an exhaust valve also arranged at the upper part of the filling liquid tank, and the filling liquid is physiological saline, heparin or blood.
Since the venous cannula 10 and arterial cannula 20 are in direct communication with the inlet and outlet of the blood pump 30, after priming, the cannula is not allowed to enter the proximal end of the venous cannula 10 and arterial cannula 20 until access, and therefore a hemostatic clip (not shown) is provided on the venous cannula 10 distal to the first reversing valve 41, and a hemostatic clip (not shown) is also provided on the arterial cannula 20 distal to the second reversing valve 42, either directly on the tubing or as a separate medical device, which is only re-clipped on the tubing when in use. After the perfusion and the exhaust of the pipeline and the blood pump 30, the venous cannula 10 and the arterial cannula 20 are clamped by the hemostatic forceps before the first reversing valve 41 and the second reversing valve 42 are reversed, so that the perfusion liquid is prevented from flowing to the proximal ends of the venous cannula 10 and the arterial cannula 20, and the intervention operation of the venous cannula 10 and the arterial cannula 20 is prevented from being influenced.
Claims (6)
1. An extracorporeal blood circulation assembly comprising a venous cannula (10) and an arterial cannula (20), characterized in that: the proximal end of the venous cannula (10) extends to the blood pump (30) and is directly connected to the inlet of the blood pump (30), and/or the proximal end of the arterial cannula (20) extends to the blood pump (30) and is directly connected to the outlet of the blood pump (30).
2. An extracorporeal blood circulation assembly according to claim 1, wherein: a perfusion fluid pipeline is arranged between the inlet and the outlet of the blood pump (30), and the perfusion fluid pipeline is independent of the blood circulation system formed by the venous cannula (10), the arterial cannula (20) and the blood pump (30).
3. An extracorporeal blood circulation assembly according to claim 2, wherein: the perfusion liquid pipeline comprises a first reversing valve (41) and a second reversing valve (42) which are respectively arranged on the venous cannula (10) and the arterial cannula (20), the first reversing valve (41) controls the inlet of the blood pump (30) to be communicated with the far end of the venous cannula (10) or the flushing pipeline (43) of the perfusion liquid pipeline, and the second reversing valve (42) controls the outlet of the blood pump (30) to be communicated with the far end of the arterial cannula (20) or the flushing pipeline (43) of the perfusion liquid pipeline.
4. An extracorporeal blood circulation assembly according to claim 3, wherein: the first reversing valve (41) is arranged on the venous cannula (10) adjacent to the inlet of the blood pump (30), and the second reversing valve (42) is arranged on the arterial cannula (20) adjacent to the outlet of the blood pump (30).
5. An extracorporeal blood circulation assembly according to claim 3, wherein: the flushing pipelines (43) on the two reversing valves are respectively communicated with the inlet and the outlet of the perfusion fluid tank, and the upper part of the perfusion fluid tank is also provided with an exhaust valve.
6. An extracorporeal blood circulation assembly according to claim 3, wherein: a hemostatic clip is arranged on the venous cannula (10) at the far side of the first reversing valve (41), and a hemostatic clip is also arranged on the arterial cannula (20) at the far side of the second reversing valve (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320274373.2U CN219921691U (en) | 2023-02-15 | 2023-02-15 | Extracorporeal blood circulation assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320274373.2U CN219921691U (en) | 2023-02-15 | 2023-02-15 | Extracorporeal blood circulation assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219921691U true CN219921691U (en) | 2023-10-31 |
Family
ID=88491022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320274373.2U Active CN219921691U (en) | 2023-02-15 | 2023-02-15 | Extracorporeal blood circulation assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219921691U (en) |
-
2023
- 2023-02-15 CN CN202320274373.2U patent/CN219921691U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |