CN219804146U - External magnetic suspension centrifugal ventricular assist device implanted through periphery - Google Patents
External magnetic suspension centrifugal ventricular assist device implanted through periphery Download PDFInfo
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- CN219804146U CN219804146U CN202320939966.6U CN202320939966U CN219804146U CN 219804146 U CN219804146 U CN 219804146U CN 202320939966 U CN202320939966 U CN 202320939966U CN 219804146 U CN219804146 U CN 219804146U
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- inner tube
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- outer tube
- blood pump
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- 230000002861 ventricular Effects 0.000 title claims abstract description 36
- 239000000725 suspension Substances 0.000 title claims abstract description 27
- 210000004369 blood Anatomy 0.000 claims abstract description 63
- 239000008280 blood Substances 0.000 claims abstract description 63
- 210000002376 aorta thoracic Anatomy 0.000 claims abstract description 10
- 210000000709 aorta Anatomy 0.000 claims abstract description 9
- 238000002627 tracheal intubation Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 238000007914 intraventricular administration Methods 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000005339 levitation Methods 0.000 claims 3
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 238000000338 in vitro Methods 0.000 abstract description 12
- 230000004087 circulation Effects 0.000 abstract description 6
- 238000011282 treatment Methods 0.000 abstract description 6
- 210000005259 peripheral blood Anatomy 0.000 abstract description 4
- 239000011886 peripheral blood Substances 0.000 abstract description 4
- 206010007556 Cardiac failure acute Diseases 0.000 description 8
- 208000007536 Thrombosis Diseases 0.000 description 7
- 206010019280 Heart failures Diseases 0.000 description 6
- 230000017531 blood circulation Effects 0.000 description 5
- 238000002618 extracorporeal membrane oxygenation Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 230000008733 trauma Effects 0.000 description 4
- 208000009525 Myocarditis Diseases 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 210000005240 left ventricle Anatomy 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 206010000891 acute myocardial infarction Diseases 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
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- 208000009378 Low Cardiac Output Diseases 0.000 description 1
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- 208000035850 clinical syndrome Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000004393 prognosis Methods 0.000 description 1
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- 210000005245 right atrium Anatomy 0.000 description 1
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Abstract
The utility model discloses an in-vitro magnetic suspension centrifugal ventricular assist device implanted through the periphery. The ventricular assist device comprises a cannula with a single double-cavity structure, an in-vitro magnetic suspension type centrifugal blood pump and an in-vitro controller; the intubation tube comprises an inner tube and an outer tube coaxially arranged outside the inner tube, a blood outflow cavity is formed by the inner wall of the inner tube, and a blood inflow cavity is formed between the outer wall of the inner tube and the inner wall of the outer tube; the joint of the inner tube and the outer tube is connected in a sealing way; at one end of the cannula, an inner tube is led out of an outer tube to form a V shape, the inner tube is connected with an inlet of the centrifugal blood pump, and the outer tube is connected with an outlet of the centrifugal blood pump; at the other end of the cannula, an inner tube extends out of the outer tube, and a plurality of drainage holes in the ventricle are arranged at positions corresponding to the positions in the ventricle of the extended inner tube; a plurality of intra-aortic outflow holes are arranged on the outer tube at positions corresponding to the descending aorta or the ascending aorta; the external controller is connected with the centrifugal blood pump. The utility model can be implanted through peripheral blood vessels in a quick and minimally invasive way, and is used for auxiliary treatment of the short-medium-term circulation of the ventricles.
Description
Technical Field
The utility model relates to an in-vitro magnetic suspension centrifugal ventricular assist device implanted through the periphery, belonging to the field of medical appliances.
Background
Severe explosive myocarditis, acute myocardial infarction and other diseases can cause acute heart failure, serious deficiency of heart pumping blood function, and incapacity of maintaining normal blood circulation of human body, so that insufficient blood supply of tissues and organs is caused, and the life of a patient is seriously threatened. Acute heart failure (heart failure) refers to a clinical syndrome that acute pulmonary congestion, pulmonary edema and tissue and organ hypoperfusion and cardiogenic shock occur due to acute attack or aggravated ventricular dysfunction, obviously reduced myocardial contractility and aggravated heart load, resulting in sudden drop of acute cardiac output, sudden rise of pulmonary circulatory pressure and increase of peripheral circulatory resistance, and pulmonary circulatory congestion. The prognosis of acute heart failure is poor, and the death rate of acute heart failure caused by acute myocardial infarction is higher. At this time, the heart muscle of the patient can be restored with the aid of a ventricular assist pump (a short-term ventricular assist pump is more suitable), so that the death risk is reduced, and the life of the patient is saved.
Under such conditions or diseases, ventricular assist devices that can be implanted rapidly and that function in a short period of time to effectively assist the patient's normal blood circulation are one of the effective treatments to save the patient's life. There are two main types of current emergency ventricular assist approaches: intra-aortic balloon counterpulsation (intraaortic balloon pump counterpulsati-on, IABP) and imported in vitro membrane oxygenation therapy (extracorporeal membraneoxy-generation, ECMO). The disadvantage of the IABP assisted circulatory therapy is that it does not provide adequate circulatory assistance for patients with severe heart failure and is accompanied by thrombocytopenia and bleeding tendency. The ECMO has the defects of thrombus formation in a pump, heavy and inconvenient carrying, complex implantation and nursing and the like. Intra-pump thrombosis and hemolysis of the ventricular assist pump in an ECMO module are important factors limiting the clinical use of ECMO.
Therefore, aiming at the clinical demands of critical heart failure patients, in order to improve the treatment success rate of emergency ventricular assist devices, it is urgently needed to develop a ventricular assist pump which is used in the short and medium term in vitro, has low thrombus incidence rate, is implanted rapidly through peripheral vascular minimally invasive and is portable.
Disclosure of Invention
Aiming at the requirements of acute heart failure treatment, heart failure patient transportation and the like, the utility model aims to provide an in-vitro magnetic suspension centrifugal ventricular assist device which is implanted through the periphery and can be implanted into a patient through the periphery blood vessel for short-medium period circulation assisted treatment of temporary heart failure caused by low cardiac output and explosive myocarditis after heart operation, other acute heart failure and other conditions.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an in vitro magnetic suspension centrifugal ventricular assist device implanted through the periphery comprises a cannula with a single double-cavity structure implanted through the periphery, an in vitro magnetic suspension type centrifugal blood pump and an in vitro controller; wherein, the liquid crystal display device comprises a liquid crystal display device,
the intubation tube comprises an inner tube and an outer tube coaxially arranged outside the inner tube, a blood outflow cavity is formed by the inner wall of the inner tube, and a blood inflow cavity is formed between the outer wall of the inner tube and the inner wall of the outer tube; the joint of the inner tube and the outer tube is connected in a sealing way;
at one end of the cannula, an inner tube is led out of an outer tube to form a V shape, the inner tube is connected with an inlet of the centrifugal blood pump, and the outer tube is connected with an outlet of the centrifugal blood pump;
at the other end of the cannula, an inner tube extends out of the outer tube, and the extended inner tube is provided with a plurality of intraventricular drainage holes at positions corresponding to the positions in the ventricles; a plurality of intra-aortic outflow holes are arranged on the outer tube at positions corresponding to the descending aorta or the ascending aorta;
the external controller is connected with the centrifugal blood pump and controls and drives the motor in the centrifugal blood pump.
Preferably, the inner tube is integrally formed with the outer tube.
Preferably, the number of the drainage holes in the ventricle is 8-12. The intraventricular drainage holes are uniformly arranged at the end position of the inner tube.
Preferably, the number of the outflow holes in the aorta is 8-12. The intra-aortic outflow holes are uniformly arranged at positions close to the connection position of the inner tube and the outer tube.
The centrifugal blood pump comprises a base and a blood pump head arranged on the base, wherein the blood pump head is provided with the inlet and the outlet.
The utility model has the beneficial effects that:
the utility model relates to a short-medium-term ventricular assist device which consists of a single double-cavity cannula implanted through the periphery, an external magnetic suspension type centrifugal blood pump and an external controller, wherein an implantation pipeline adopts a single double-cavity pipeline design, the single double-cavity pipeline structure is convenient to implant through a puncture point, the trauma of a patient is reduced, and the trauma when the device is removed is also reduced; the inflow pipeline and the outflow pipeline are made into a whole by the single double-cavity pipeline and are directly connected with the external magnetic suspension type centrifugal blood pump, so that the number of joints is reduced, and the risk of coagulation and thrombosis at the joint position is reduced; the magnetic suspension type centrifugal blood pump and the driving device (controller) are placed outside the body, so that the operation installation of the short-medium-term auxiliary device and the withdrawal of the device after the device supports the circulation of the human body of a patient for several days are facilitated, the volume limitation of the in-vivo implanted type ventricular auxiliary pump is avoided, and the magnetic suspension is easier to realize; the device has low occurrence rate of thrombus in the pump, is portable and is more suitable for transportation of patients.
Drawings
Fig. 1 is a schematic view of the overall structure of the ventricular assist device of the present utility model.
Fig. 2 is a schematic view of a partial structure of a double-lumen cannula in a ventricular assist device of the present utility model.
Fig. 3 is a partially exploded schematic view of an extracorporeal blood pump in a ventricular assist device of the present utility model.
Fig. 4 is a perspective view of an assembled extracorporeal centrifugal blood pump in a ventricular assist device of the present utility model.
Fig. 5 is a perspective view of an in vitro controller in a ventricular assist device of the present utility model.
Fig. 6 is a schematic view of the ventricular assist device of the present utility model as applied to a human body.
Reference numerals
1, intubation; 2, centrifuging the blood pump; 3 an external controller; 11 inner tubes; an outer tube 12; 111 intraventricular drainage holes; 112 an inner tube blood pump port; 121 intra-aortic outflow orifice; 122 an outer tube blood pump port; 21 a blood pump head; 22 base; 211 inlet; 212 outlet.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
The utility model relates to an in vitro magnetic suspension centrifugal ventricular assist device which can be implanted into a patient through peripheral blood vessels and used for acute heart failure and other auxiliary treatments requiring short-medium-term circulation. In particular to a heart used for heart postoperative low discharge; temporary heart failure due to explosive myocarditis; and a single double-cavity inflow pipeline and outflow pipeline are implanted into a body, a magnetic suspension type centrifugal blood pump and a controller are placed outside the body, and the ventricular assist device is implanted through a peripheral blood vessel in a minimally invasive manner under other conditions such as acute heart failure.
As shown in fig. 1, the ventricular assist device of the utility model comprises a single double-cavity structure cannula 1, an external magnetic suspension type centrifugal blood pump 2 and an external controller 3, wherein the cannula 1 is connected with the centrifugal blood pump 2, and the external controller 3 is connected with the centrifugal blood pump 2 to control and drive a motor in the centrifugal blood pump 2 and control the suspension and rotation of an impeller in the centrifugal blood pump.
As shown in fig. 2, the cannula 1 includes an inner tube 11 and an outer tube 12, the outer tube 12 is coaxially disposed outside the inner tube 11, and the inner tube 11 and the outer tube 12 are connected in a sealed manner, and may be formed in an integrally formed manner. The inner wall of the inner tube 11 forms a blood outflow chamber (from which blood flows to the centrifugal blood pump), and the outer wall of the inner tube 11 and the inner wall of the outer tube 12 form a blood inflow chamber (from the centrifugal blood pump into the descending aorta or the ascending aorta of the human body).
At one end of the cannula, the inner tube is led out from the outer tube, the inner tube and the outer tube form a V shape, the led inner tube is connected with an inlet 211 of the centrifugal blood pump through an inner tube blood pump interface 112, and the outer tube is connected with an outlet 212 of the centrifugal blood pump 2 through an outer tube blood pump interface 122;
at the other end of the cannula, an inner tube extends out of the outer tube, and the extended inner tube is provided with a plurality of intra-ventricular drainage holes 111 at positions corresponding to the inside of ventricles, and blood flows into a blood outflow cavity of the inner tube from the left ventricle through the intra-ventricular drainage holes 111; a plurality of intra-aortic outflow holes 121 are provided in the outer tube at positions corresponding to the descending aorta or the ascending aorta, and blood flows out from the blood inflow lumen into the descending aorta or the ascending aorta through the intra-aortic outflow holes 121.
In one embodiment of the present utility model, the number of intraventricular drainage holes 111 is 8 to 12. These intraventricular drainage holes 111 are located at the end of the inner tube. The number of the intra-aortic outflow holes 121 is 8 to 12. These intra-aortic outflow bores 121 are located near the junction of the inner tube 11 and the outer tube 12.
As shown in fig. 3 to 5, the centrifugal blood pump 2 is a magnetic suspension type centrifugal blood pump, and includes a base 22, and a blood pump head 21 mounted on the base 22, wherein an inlet 211 and an outlet 212 are provided on the blood pump head 21. The base 22 is connected with the external controller 3 through a power supply line.
Fig. 6 is a schematic view of the ventricular assist device of the present utility model when applied to a human body. In fig. 6, RA represents the right ventricle; RV represents the right atrium; LA represents the left ventricle; LV represents the left ventricle; AAO stands for ascending artery; AOA represents the aortic arch; DAO represents the descending aorta; FA represents the femoral artery. When the ventricular assist device of the utility model is applied to a human body, a single double-cavity cannula 1 is implanted into a patient through a peripheral blood vessel, a plurality of intraventricular drainage holes 111 uniformly distributed on an inner tube are positioned in a ventricle, a plurality of intraaortic outflow holes 121 uniformly distributed on an outer tube 12 are positioned in a descending aorta or an ascending aorta, and a centrifugal blood pump and a controller are positioned outside the patient. The controller 3 controls the impeller suspension and driving motor in the base 22 so that the impeller in the pump head 21 of the blood pump is suspended and rotated. When the impeller rotates, blood in the ventricle is pumped into the inner tube 11 through a plurality of intraventricular drainage holes 111 uniformly distributed on the inner tube 11, then pumped into the blood pump head 21, pumped out into the outer tube 12 through the blood pump head 21 in a pressurizing way, and flows into the descending aorta or the ascending aorta through the intra-aortic outflow holes 121 on the outer tube 12, so that the effect of enhancing the human circulation is achieved.
The utility model relates to a short-medium-term ventricular assist device which consists of a single double-cavity cannula implanted through the periphery, an external magnetic suspension type centrifugal blood pump and an external controller, wherein an implantation pipeline adopts a single double-cavity pipeline design, the single double-cavity pipeline structure is convenient to implant through a puncture point, the trauma of a patient is reduced, and the trauma when the device is removed is also reduced; the inflow pipeline and the outflow pipeline are made into a whole by the single double-cavity pipeline and are directly connected with the external magnetic suspension type centrifugal blood pump, so that the number of joints is reduced, and the risk of coagulation and thrombosis at the joint position is reduced; the magnetic suspension type centrifugal blood pump and the driving device (controller) are placed outside the body, so that the operation installation of the short-medium-term auxiliary device and the withdrawal of the device after the device supports the circulation of the human body of a patient for several days are facilitated, the volume limitation of the in-vivo implanted type ventricular auxiliary pump is avoided, and the magnetic suspension is easier to realize; the device has low occurrence rate of thrombus in the pump, is portable and is more suitable for transportation of patients.
Finally, it should be understood that the foregoing description is illustrative of the preferred embodiments of the present utility model and is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.
Claims (7)
1. The external magnetic suspension centrifugal ventricular assist device is characterized by comprising a single insertion tube with a double-cavity structure, an external magnetic suspension type centrifugal blood pump and an external controller, wherein the insertion tube is peripherally implanted; wherein, the liquid crystal display device comprises a liquid crystal display device,
the intubation tube comprises an inner tube and an outer tube coaxially arranged outside the inner tube, a blood outflow cavity is formed by the inner wall of the inner tube, and a blood inflow cavity is formed between the outer wall of the inner tube and the inner wall of the outer tube; the joint of the inner tube and the outer tube is connected in a sealing way;
at one end of the cannula, an inner tube is led out of an outer tube to form a V shape, the inner tube is connected with an inlet of the centrifugal blood pump, and the outer tube is connected with an outlet of the centrifugal blood pump;
at the other end of the cannula, an inner tube extends out of the outer tube, and the extended inner tube is provided with a plurality of intraventricular drainage holes at positions corresponding to the positions in the ventricles; a plurality of intra-aortic outflow holes are arranged on the outer tube at positions corresponding to the descending aorta or the ascending aorta;
the external controller is connected with the centrifugal blood pump and controls and drives the motor in the centrifugal blood pump.
2. The peripherally-implanted external magnetic levitation centrifugal ventricular assist device of claim 1, wherein said inner tube and said outer tube are integrally formed.
3. The peripherally-implanted external magnetic suspension centrifugal ventricular assist device as claimed in claim 1, wherein the number of said intraventricular drainage holes is 8-12.
4. A peripherally-implanted external magnetic levitation centrifugal ventricular assist device as claimed in claim 3, wherein said intraventricular drainage holes are uniformly arranged at the end position of said inner tube.
5. The peripherally-implanted external magnetic suspension centrifugal ventricular assist device as claimed in claim 1, wherein the number of said intra-aortic outflow holes is 8-12.
6. The peripherally-implanted external magnetic levitation centrifugal ventricular assist device as claimed in claim 5, wherein said intra-aortic outflow holes are uniformly arranged at a position near a junction of said inner tube and said outer tube.
7. The peripherally-implanted extracorporeal magnetic suspension centrifugal ventricular assist device as claimed in claim 1, wherein the centrifugal blood pump comprises a base, a blood pump head mounted on the base, the blood pump head being provided with the inlet and the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320939966.6U CN219804146U (en) | 2023-04-14 | 2023-04-14 | External magnetic suspension centrifugal ventricular assist device implanted through periphery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320939966.6U CN219804146U (en) | 2023-04-14 | 2023-04-14 | External magnetic suspension centrifugal ventricular assist device implanted through periphery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219804146U true CN219804146U (en) | 2023-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320939966.6U Active CN219804146U (en) | 2023-04-14 | 2023-04-14 | External magnetic suspension centrifugal ventricular assist device implanted through periphery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219804146U (en) |
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2023
- 2023-04-14 CN CN202320939966.6U patent/CN219804146U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240402 Address after: 400700 floor 1, No. 74, Yunhe Road, Beibei District, Chongqing Patentee after: CHONGQING YONGRENXIN MEDICAL EQUIPMENT Co.,Ltd. Country or region after: China Address before: 518057 No. 12, Langshan Road, Nanshan District, Shenzhen, Guangdong Patentee before: Shenzhen Hospital, Fuwai Hospital, Chinese Academy of Medical Sciences Country or region before: China |