CN113926074B - Diversion transmission device and blood pump system - Google Patents
Diversion transmission device and blood pump system Download PDFInfo
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- CN113926074B CN113926074B CN202111301240.1A CN202111301240A CN113926074B CN 113926074 B CN113926074 B CN 113926074B CN 202111301240 A CN202111301240 A CN 202111301240A CN 113926074 B CN113926074 B CN 113926074B
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- inflow
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 78
- 239000008280 blood Substances 0.000 title claims abstract description 36
- 210000004369 blood Anatomy 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 105
- 238000010992 reflux Methods 0.000 claims abstract description 3
- 239000000919 ceramic Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000000411 inducer Substances 0.000 claims 7
- 239000002245 particle Substances 0.000 abstract description 38
- 238000000034 method Methods 0.000 description 14
- 230000006378 damage Effects 0.000 description 11
- 239000010935 stainless steel Substances 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 208000024172 Cardiovascular disease Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 208000028399 Critical Illness Diseases 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
Abstract
The embodiment of the application discloses a diversion transmission device and a blood pump system, wherein the diversion transmission device comprises: the shell is internally provided with a bearing cavity, an inflow cavity and a backflow cavity which are respectively positioned at two sides of the bearing cavity, and a liquid filling port and a liquid outlet which are communicated with the inflow cavity are also arranged at intervals; the transmission assembly comprises a rotating shaft and at least one bearing piece sleeved on the rotating shaft, a first diversion channel is formed by a gap between an inner ring and an outer ring of the bearing piece, and two ends of the first diversion channel are respectively communicated with the inflow cavity and the reflux cavity; the flow guide assembly comprises a support sleeve, the support sleeve is fixedly embedded in the bearing cavity and sleeved on the bearing piece, at least one second flow guide channel is formed in the outer wall of the support sleeve along the circumferential direction, and two ends of the second flow guide channel are respectively communicated with the inflow cavity and the backflow cavity. The diversion transmission device has ingenious design, can effectively discharge insoluble particles and a large amount of heat in time, and ensures the normal operation of the diversion transmission device and the whole blood pump system.
Description
Technical Field
The embodiment of the application belongs to the technical field of medical instruments, and particularly relates to a diversion transmission device and a blood pump system.
Background
In modern times, cardiovascular disease has become a significant cause of human death, heart transplantation is an effective means of treating critically ill heart patients, however in reality there is far more heart recipient than heart donor, resulting in death of the patient waiting for heart transplantation. The percutaneous blood pump device can assist the heart to pump blood, and is a common device for assisting in treating cardiovascular diseases.
The percutaneous blood pump auxiliary device in the prior art enters the heart of a human body in a minimally invasive surgery mode and is used for assisting the heart to pump blood. Generally, the percutaneous blood pump auxiliary device comprises a pump device, an external driving motor, a flexible driving shaft and a bearing sleeved on the flexible driving shaft, wherein one end of the flexible driving shaft is connected with the output end of the external driving motor, and the other end of the flexible driving shaft needs to pass through the percutaneous catheter and then be connected with the pump device so as to drive the pump device to rotate. During operation of the percutaneous pump assist device, the flexible drive shaft and the bearings thereon generate a significant amount of heat during operation, requiring the supply of fluid to the percutaneous catheter for cooling. Insoluble particles are generated when the bearing and the flexible driving shaft synchronously rotate, and if the insoluble particles are not discharged in time, the insoluble particles not only can cause the failure of the bearing, but also can easily enter a human body to cause harm to the human body.
However, the flow rate of the liquid in the percutaneous catheter is generally required to be relatively slow, which makes the liquid easy to form dead zones in the bearing area, and thus makes insoluble particles carried in the liquid impossible to drain.
Disclosure of Invention
The embodiment of the application aims to at least solve one of the technical problems existing in the prior art. Therefore, the embodiment of the application provides the diversion transmission device and the blood pump system, which not only can discharge heat generated during the operation of the bearing, but also can effectively discharge insoluble particles carried in liquid.
In a first aspect, the present application provides a flow directing drive comprising:
the shell is internally provided with a bearing cavity, an inflow cavity and a backflow cavity which are respectively positioned at two sides of the bearing cavity, and a liquid filling port and a liquid outlet which are communicated with the inflow cavity are also arranged at intervals;
the transmission assembly comprises a rotating shaft and at least one bearing piece sleeved on the rotating shaft, a first diversion channel is formed in a gap between an inner ring and an outer ring of the bearing piece, and two ends of the first diversion channel are respectively communicated with the inflow cavity and the reflux cavity;
the guide assembly comprises a support sleeve, the support sleeve is fixedly embedded in the bearing cavity and sleeved on the bearing piece, at least one second guide channel is formed in the outer wall of the support sleeve along the circumferential direction, and two ends of the second guide channel are respectively communicated with the inflow cavity and the backflow cavity.
According to the first aspect of the application, the diversion transmission device has at least the following beneficial effects:
according to the diversion transmission device, the supporting sleeve is sleeved on the bearing piece, the supporting sleeve is provided with at least one second diversion channel communicated with the inflow cavity and the backflow cavity, when the diversion transmission device is in operation, an operator can pour liquid into the liquid filling port, the liquid flows into the inflow cavity from the liquid filling port, the bearing piece is sleeved inside the supporting sleeve due to the fact that the rotating shaft and the bearing piece synchronously rotate at a high speed, the external pressure of the supporting sleeve is higher than the internal pressure of the supporting sleeve, the liquid flowing into the cavity flows into the backflow cavity along the second diversion channel, then flows back into the inflow cavity from the first diversion channel, and finally flows out from the inflow cavity to the liquid outlet, and insoluble particles and a large amount of heat generated in the synchronous rotation process of the bearing piece and the rotating shaft are discharged. This water conservancy diversion transmission passes through the setting of supporting sleeve and second water conservancy diversion passageway, can make liquid with the help of the pressure differential that forms between supporting sleeve and the bearing spare, and then accurate according to foretell flow path circulation flow, can be continuous in time discharge insoluble particle and a large amount of heat that produce with the synchronous rotatory in-process of pivot of bearing spare, avoid insoluble particle to pile up in bearing spare and bearing intracavity and influence bearing spare and whole drive assembly's normal operating, also prevented that insoluble particle from getting into the human body and causing the injury to the human body. Meanwhile, the circulating flow of the liquid also effectively improves the heat exchange efficiency of the liquid and the bearing piece, so that a large amount of heat generated by the bearing piece in the running process can be discharged in time, and structural damage caused by overheating of the bearing piece is avoided. The diversion transmission device can be applied to a blood pump system and can also be applied to other applicable scenes.
According to some embodiments of the application, the flow guiding assembly further comprises a flow guiding sleeve, the at least one bearing piece comprises a first bearing and a second bearing, the flow guiding sleeve is sleeved on the rotating shaft and is clamped between the first bearing and the second bearing, a gap between an inner ring and an outer ring of the first bearing forms a first sub-flow guiding channel, a gap between an inner ring and an outer ring of the second bearing forms a second sub-flow guiding channel, a spiral groove is formed in the outer wall of the flow guiding sleeve, and the inflow cavity, the first sub-flow guiding channel, the spiral groove, the second sub-flow guiding channel and the backflow cavity are sequentially communicated.
According to some embodiments of the application, the flow guiding assembly further comprises an impeller, the at least one bearing piece comprises a first bearing and a second bearing, the impeller is sleeved on the rotating shaft and is clamped between the first bearing and the second bearing, a gap between an inner ring and an outer ring of the first bearing forms a first sub-flow guiding channel, a gap between an inner ring and an outer ring of the second bearing forms a second sub-flow guiding channel, a plurality of flow guiding blades are arranged on the outer wall of the impeller along the circumferential direction, flow guiding grooves are formed between two adjacent flow guiding blades, and the inflow cavity, the first sub-flow guiding channel, the flow guiding grooves, the second sub-flow guiding channel and the backflow cavity are sequentially communicated.
According to some embodiments of the application, the guide vane is inclined with respect to the rotation axis.
According to some embodiments of the application, the support sleeve is provided with a plurality of second diversion channels along the circumferential direction.
According to some embodiments of the application, the sealing device further comprises a sealing element, the sealing element is sleeved on the rotating shaft and is attached to one end, close to the inflow cavity, of the bearing element, a first flow port and a second flow port are respectively formed in the outer wall of the sealing element, the inflow cavity is communicated with the second diversion channel through the first flow port, and the inflow cavity is communicated with the first diversion channel through the second flow port.
According to some embodiments of the application, the outer wall of the seal is provided with a plurality of the first flow openings and a plurality of the second flow openings in the circumferential direction, the first flow openings and the second flow openings being alternately and alternately arranged at intervals.
According to some embodiments of the application, a first pipeline, a second pipeline and a third pipeline are further arranged in the shell, the liquid filling port and the inflow cavity are respectively communicated with the pump device through the first pipeline and the third pipeline, and the liquid outlet is communicated with the inflow cavity through the second pipeline.
According to some embodiments of the application, the bearing chamber, the inflow chamber and the return chamber are all cylindrical chambers, and the axis of the bearing chamber, the axis of the inflow chamber and the axis of the return chamber are on the same straight line.
According to some embodiments of the application, the support sleeve is made of metal or plastic.
According to some embodiments of the application, the bearing member is one of a hybrid ceramic bearing, a ceramic bearing, and a metal bearing.
In a second aspect, the present application provides a blood pump system, including a pump device, an external driving member and the above-mentioned diversion transmission device, where the external driving member is connected to a rotary impeller in the pump device through the rotating shaft, and the liquid filling port and the inflow cavity are both connected to the pump device through pipelines.
The blood pump system according to the second aspect of the present application has at least the following advantageous effects:
the blood pump system provided by the application has the flow guiding transmission device, so that liquid circularly flows along the flow path in the flow guiding transmission device when the whole blood pump system is in operation, insoluble particles and a large amount of heat generated in the synchronous rotation process of the bearing piece and the rotating shaft can be effectively discharged in time, the phenomenon that the normal operation of the bearing piece and the whole transmission assembly is influenced due to accumulation of the insoluble particles in the bearing piece and the bearing cavity is avoided, and the phenomenon that the insoluble particles enter a human body through the pump device to cause harm to the human body is also prevented. Meanwhile, the circulating flow of the liquid also effectively improves the heat exchange efficiency of the liquid and the bearing part, so that a large amount of heat generated by the bearing part in the operation process can be discharged in time, structural damage caused by overheating of the bearing part is avoided, normal operation of the diversion transmission device and the whole blood pump system is ensured, and the whole service life of the bearing part, the transmission assembly and the blood pump system is indirectly prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic cross-sectional view of a flow directing drive of some embodiments of the present application;
FIG. 2 is an enlarged view of the structure at the point A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of a flow directing device according to some embodiments of the present application;
FIG. 4 is a schematic cross-sectional view of a flow directing device according to some embodiments of the present application;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
fig. 6 is a schematic view of an impeller according to some embodiments of the application.
FIG. 7 is a schematic illustration of a construction of a support sleeve according to some embodiments of the application;
FIG. 8 is a schematic cross-sectional view of a support sleeve according to some embodiments of the application;
fig. 9 is a schematic structural view of a seal according to some embodiments of the present application.
In the accompanying drawings: a housing 100; a bearing cavity 110; inflow chamber 120; a reflow chamber 130; a fill port 140; a liquid outlet 150; a first conduit 160; a second conduit 170; a third line 180; a transmission assembly 200; a rotation shaft 210; a bearing member 220; a first bearing 221; a second bearing 222; a first diversion channel 230; a first sub-diversion channel 231; a second sub-diversion channel 232; a support sleeve 300; a second diversion channel 310; a seal 400; a first flow port 410; a second flow port 420; a guide sleeve 500; a spiral groove 510; impeller 600, guide vane 610, and guide groove 620.
Detailed Description
Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that embodiments of the application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, the meaning of several is one or more, the meaning of several is two or more, greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the embodiments of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly, and those skilled in the art may reasonably ascertain the specific meaning of the terms in the present application by combining the specific contents of the technical solutions.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, 2 and 3, the present application discloses a guiding transmission device, which includes a housing 100, a transmission assembly 200 and a guiding assembly.
The housing 100 is provided with a bearing cavity 110, an inflow cavity 120 and a return cavity 130 respectively located at two sides of the bearing cavity 110, and a filling port 140 and a liquid outlet 150 which are communicated with the inflow cavity 120 are further spaced apart on the housing 100.
The transmission assembly 200 includes a rotating shaft 210 and at least one bearing member 220 sleeved on the rotating shaft 210, wherein a gap between an inner ring and an outer ring of the bearing member 220 forms a first diversion channel 230, and two ends of the first diversion channel 230 are respectively communicated with the inflow cavity 120 and the return cavity 130.
The flow guiding assembly comprises a supporting sleeve 300, the supporting sleeve 300 is fixedly embedded in the bearing cavity 110 and sleeved on the bearing piece 220, at least one second flow guiding channel 310 is formed in the outer wall of the supporting sleeve 300 along the circumferential direction, and two ends of the second flow guiding channel 310 are respectively communicated with the inflow cavity 120 and the backflow cavity 130.
The flow directing transmission of the present application may be applied to a blood pump system (also referred to as a percutaneous blood pump assist device) as an example, but may also be applied to other applicable scenarios.
The embodiment of the application is described by taking the application of the diversion transmission device to a blood pump system as an example.
When the flow guiding transmission device is used as a part of a blood pump system, one end, close to the inflow cavity 120, of a rotating shaft 210 in the flow guiding transmission device is connected with a rotating impeller or a rotating paddle of the pump device, one end, far away from the inflow cavity 120, of the rotating shaft 210 is connected with an output end of an external driving piece, and the external driving piece is a driving piece such as a driving motor, a magnetic transmission driving structure and the like, and it is easy to understand that the whole transmission assembly 200 is used for transmitting the torque of the external driving piece when the whole blood pump system is in operation, so that the rotating impeller or the rotating paddle of the pump device is driven to rotate, and the purpose of pumping blood is achieved.
It will be appreciated that when the flow guiding transmission device of the present application is applied to a blood pump system for operation, the rotation shaft 210 and the bearing member 220 forming the transmission assembly 200 perform synchronous rotation, and the bearing member 220 may be a ball bearing, that is, the structure of the bearing member 220 is composed of an inner ring, balls and an outer ring, and when the bearing member 220 is actually rotated, the inner ring of the bearing member 220 rotates relative to the outer ring through the action of the balls. The gap between the inner and outer rings of the bearing member 220 forms a first fluid-guiding channel 230.
In addition, when the flow guiding transmission device of the present application is used in a blood pump system, an operator can fill the liquid, preferably normal saline or glucose, into the liquid filling port 140, and the liquid can cool the bearing member 220 when flowing through the bearing member 220 on the transmission assembly 200.
According to the diversion transmission device, the supporting sleeve 300 is sleeved on the bearing piece 220, at least one second diversion channel 310 communicated with the inflow cavity 120 and the backflow cavity 130 is formed in the supporting sleeve 300, when the diversion transmission device is in operation, an operator can pour liquid into the liquid filling port 140, the liquid flows into the inflow cavity 120 from the liquid filling port 140, the bearing piece 220 is sleeved inside the supporting sleeve 300 due to the synchronous and high-speed rotation of the rotating shaft 210 and the bearing piece 220, the external pressure of the supporting sleeve 300 is higher than the internal pressure of the supporting sleeve 300, the liquid flowing into the backflow cavity 120 flows into the backflow cavity 130 along the second diversion channel 310, then flows back into the inflow cavity 120 from the first diversion channel 230, and finally flows out of the inflow cavity 120 to the liquid outlet 150, so that insoluble particles and a large amount of heat generated in the synchronous rotation process of the bearing piece 220 and the rotating shaft 210 are discharged.
The diversion transmission device of the application can ensure that liquid circulates by means of the pressure difference formed between the support sleeve 300 and the bearing piece 220 through the arrangement of the support sleeve 300 and the second diversion channel 310, thereby accurately circulating according to the flow path, continuously discharging insoluble particles and a large amount of heat generated in the synchronous rotation process of the bearing piece 220 and the rotating shaft 210 in time, avoiding the influence of the accumulation of the insoluble particles in the bearing piece 220 and the bearing cavity 110 on the normal operation of the bearing piece 220 and the whole transmission assembly 200, and also preventing the damage of the insoluble particles to human bodies caused by the entry of the human bodies. Meanwhile, the heat exchange efficiency of the liquid and the bearing piece 220 is effectively improved, so that a large amount of heat generated by the bearing piece 220 in the operation process can be discharged in time, and structural damage caused by overheating of the bearing piece 220 is avoided.
Referring again to fig. 1 to 3, in some embodiments of the present application, the flow guiding assembly further includes a flow guiding sleeve 500, the at least one bearing member 220 includes a first bearing 221 and a second bearing 222, the flow guiding sleeve 500 is sleeved on the rotating shaft 210 and is sandwiched between the first bearing 221 and the second bearing 222, a gap between an inner ring and an outer ring of the first bearing 221 forms a first sub-flow guiding channel 231, a gap between an inner ring and an outer ring of the second bearing 222 forms a second sub-flow guiding channel 232, an outer wall of the flow guiding sleeve 500 is provided with a spiral groove 510, and the inflow cavity 120, the first sub-flow guiding channel 231, the spiral groove 510, the second sub-flow guiding channel 232 and the return cavity 130 are sequentially communicated.
The first bearing 221 and the second bearing 222 may be ball bearings. Obviously, the first bearing 221, the flow guiding sleeve 500 and the second bearing 222 are sequentially sleeved on the rotating shaft 210 along the axial direction, so that the torque effect of the transmission external driving part of the whole transmission assembly 200 can be improved, the rotating precision of the rotating shaft 210 is improved, the stability of the rotating motion of the rotating shaft 210 is ensured, the rotating shaft 210 is further enabled to stably drive the rotating impeller or the rotating paddle in the pump device to rotate, and the reliability of the pump device for pumping blood to a human body is ensured.
Further, it should be appreciated that in such embodiments, the direction of rotation of the helical groove 510 on the sleeve 500 may be the same or opposite to the direction of rotation of the shaft 210.
When the rotation direction of the spiral groove 510 is opposite to the rotation direction of the rotating shaft 210, during the operation of the whole diversion transmission device, the liquid flowing into the cavity 120 flows into the backflow cavity 130 along the second diversion channel 310, and then the liquid in the backflow cavity 130 flows through the second sub diversion channel 232, the spiral groove 510 and the first sub diversion channel 231 in sequence under the action of the pressure difference, finally flows back to the inflow cavity 120 and flows out to the liquid outlet 150;
when the rotation direction of the spiral groove 510 is the same as the rotation direction of the rotation shaft 210, the liquid flowing into the cavity 120 flows into the first sub-diversion channel 231 under the rotation of the rotation shaft 210, then flows through the spiral groove 510 and the second sub-diversion channel 232 in sequence, and then enters the backflow cavity 130, and the liquid in the backflow cavity 130 flows back to the inflow cavity 12 along the second diversion channel 310 under the action of the pressure difference, and finally flows out to the liquid outlet 150.
The liquid circulates through the flow path, and the insoluble particles generated by the friction rotation of the first bearing 221 and the second bearing 222 can be discharged to the outside in time. Meanwhile, it should be understood that by adding a guide sleeve 500 between the first bearing 221 and the second bearing 222 and providing the guide sleeve 500 with the spiral groove 510 which is communicated with the first sub-guide channel 231 and the second sub-guide channel 232, turbulence is easily formed when the liquid flows in the spiral groove 510, so that the forced convection heat exchange is generated between the liquid and the guide sleeve 500, the first bearing 221 and the second bearing 222, the heat exchange effect of the liquid and the whole bearing piece 220 is enhanced, the cooling of the rotating shaft 210 is also indirectly accelerated, a large amount of heat generated during the operation of the whole transmission assembly 200 can be rapidly discharged, the expansion deformation of the rotating shaft 210 and the bearing piece 220 on the transmission assembly 200 due to the overhigh temperature is further avoided, and the stability of the structure and the function of the whole transmission assembly 200 is ensured. Meanwhile, the turbulence is formed when the liquid flows in the spiral groove 510, so that the overall flow rate of the liquid is accelerated, and insoluble particles generated in the rotation process of the bearing member 220 and the rotating shaft 210 can be discharged better and faster in time.
Referring to fig. 4, 5 and 6, in some embodiments of the present application, the flow guiding assembly further includes an impeller 600, at least one bearing member 220 includes a first bearing 221 and a second bearing 222, the impeller 600 is sleeved on the rotating shaft 210 and is sandwiched between the first bearing 221 and the second bearing 222, a gap between an inner ring and an outer ring of the first bearing 221 forms a first sub-flow guiding channel 231, a gap between an inner ring and an outer ring of the second bearing forms a second sub-flow guiding channel 232, a plurality of flow guiding blades 610 are circumferentially arranged on an outer wall of the impeller 600, a flow guiding groove 620 is formed between two adjacent flow guiding blades 610, and the inflow cavity 120, the first sub-flow guiding channel 231, the flow guiding groove 620, the second sub-flow guiding channel 232 and the return cavity 130 are sequentially communicated.
It should be understood that, in these embodiments, when the whole flow guiding transmission device is in operation, the liquid flowing into the cavity 120 flows into the backflow cavity 130 along the second flow guiding channel 310, then the liquid in the backflow cavity 130 flows through the second sub-flow guiding channel 232, the flow guiding groove 620 and the first sub-flow guiding channel 231 in sequence under the action of the pressure difference, finally flows back into the inflow cavity 120 and flows out to the liquid outlet 150, and the liquid flows circularly through the above flow paths, so that the insoluble particles generated by the friction rotation of the first bearing 221 and the second bearing 222 can be discharged out of the body in time.
It should be understood that, since the first sub-diversion channel 231 is formed by the gap between the inner ring and the outer ring of the first bearing 221, that is, the first sub-diversion channel 231 is annular, and similarly, the second sub-diversion channel 232 is annular. By additionally arranging the impeller 600 between the first bearing 221 and the second bearing 222 and arranging the plurality of guide vanes 610 between each two adjacent guide vanes 610 along the circumferential direction, as the guide vane 620 is surrounded by each two adjacent guide vanes 610, the outer wall of the impeller 600 is provided with the plurality of guide vanes 620, the plurality of guide vanes 620 are distributed annularly, two ends of each guide vane 620 are respectively in butt joint communication with the first sub-guide channel 231 and the second sub-guide channel 232, so that the annular first sub-guide channel 231 and the annular second sub-guide channel 232 are well adapted, each position in the first bearing 221 and the second bearing 222 can be contacted with liquid, insoluble particles generated between the inner ring and the outer ring of the first bearing 221 and between the inner ring and the outer ring of the second bearing 222 are ensured to be completely carried out by the liquid, and simultaneously, each position in the first bearing 221 and the second bearing 222 is also cooled by the liquid, and the structure damage caused by uneven temperature of each position in the first bearing 221 and the second bearing 222 is avoided.
Meanwhile, the plurality of diversion trenches 620 of the annular part formed by the plurality of diversion blades 610 not only increases the flow rate of liquid flow, but also effectively improves the flow speed of the liquid flow due to the action of the plurality of diversion blades 610 on the liquid diversion, strengthens the heat exchange effect of the liquid and the whole bearing piece 220, ensures that the liquid can discharge insoluble particles and heat generated by the whole bearing piece 220 in a short time, and greatly improves the efficiency of discharging the insoluble particles and the heat.
Referring again to fig. 4, 5, and 6, in some embodiments of the application, the guide vane 610 is inclined relative to the axis of rotation 210. Specifically, the guide vane 610 may form an acute angle or an obtuse angle with respect to the rotation shaft 210.
Referring to fig. 4 and 5, when the guide vane 610 is inclined toward the end of the rotating shaft 210 near the inflow cavity 120, that is, when the rotating shaft 210 rotates clockwise, the liquid flowing into the cavity 120 flows into the backflow cavity 130 along the second guide channel 310, and then flows through the second sub-guide channel 232, the guide groove 620 and the first sub-guide channel 231 in sequence under the action of the pressure difference, and finally flows back to the inflow cavity 120 and flows out to the liquid outlet 150;
when the guide vane 610 is inclined toward the rotating shaft 210 away from the end of the inflow cavity 120, that is, the guide vane 610 forms an obtuse angle with respect to the rotating shaft 210, when the rotating shaft 210 rotates clockwise, the liquid flowing into the cavity 120 flows into the first sub-guide channel 231 under the rotation of the rotating shaft 210, flows through the spiral groove 510 and the second sub-guide channel 232 in sequence, then enters the backflow cavity 130, flows back into the inflow cavity 12 along the second guide channel 310 under the action of pressure difference in the backflow cavity 130, and finally flows out to the liquid outlet 150.
Through set up the guide vane 610 slope relative to the pivot 210 can make liquid runner and pivot be in the guiding gutter 620 of certain angle entering impeller 600 outer wall, increase the velocity of flow of liquid, accelerate the velocity of liquid flow through guiding gutter 620, first sub-guide channel 231 and second sub-guide channel 232, make the liquid that carries insoluble particle can be quick backward flow to inflow chamber 120, and then flow out to liquid outlet 150, further promote insoluble particle and heat exhaust's efficiency, also make whole bearing member 220 can obtain the quick cooling of high-speed flowing liquid, ensure whole drive assembly and whole water conservancy diversion transmission's structural stability.
Of course, in order to further increase the flow rate of the liquid in the flow guide groove 620, the flow guide vane may be provided as a spiral vane or a vane having a thick middle and thin ends, thereby further improving the efficiency of insoluble particles and heat discharge.
Referring to fig. 1, 2, 3, 7 and 8, in some embodiments of the present application, the support sleeve 300 is provided with a plurality of second diversion channels 310 along the circumferential direction. Specifically, each of the second flow guiding channels 310 is parallel to the rotation shaft 210. The second flow guiding channel 310 may be a groove formed on the outer wall of the supporting sleeve 300, or may be a hollow channel formed inside the supporting sleeve 300. The plurality of second guide channels 310 are uniformly and intermittently disposed on the support sleeve 300 in the circumferential direction.
It will be appreciated that by providing the plurality of second flow guide channels 310 on the support sleeve 300, the plurality of second flow guide channels 310 are annularly distributed along the circumference of the support sleeve 300, so as to adapt to the cylindrical shape of the bearing member 220, so that the liquid is uniformly separated from the inflow cavity 120 into a plurality of flow paths, each of which flows into the corresponding second flow guide channel 310 and then merges into the return cavity 130, so that the return cavity 130 can be uniformly filled with the liquid.
In addition, it can be understood that, since the first diversion channel 230 is formed by the gap between the inner ring and the outer ring of the bearing member 220, that is, the first diversion channel 230 is annular, the backflow cavity 130 is in butt-joint communication with the annular first diversion channel 230, so that the liquid in the backflow cavity 130 flows through the annular first diversion channel 230 and flows back to the inflow cavity 120. Through the arrangement, all positions in the bearing piece 220 can be contacted with flowing liquid, insoluble particles generated by friction with balls between the inner ring and the outer ring of the bearing piece 220 are all carried out by the flowing liquid, accumulation and blockage of the insoluble particles at a specific position in the bearing piece 220 are avoided, and meanwhile, all positions in the bearing piece 220 can be subjected to heat exchange with the liquid to obtain liquid cooling, so that the defects of structural deformation and the like caused by uneven temperature of all positions in the bearing piece 220 are prevented.
Referring to fig. 1 to 3 and fig. 9, in some embodiments of the present application, the present application further includes a sealing member 400, wherein the sealing member 400 is sleeved on the rotating shaft 210 and is attached to one end of the bearing member 220 near the inflow cavity 120, a first flow port 410 and a second flow port 420 are respectively formed on an outer wall of the sealing member 400, the inflow cavity 120 is communicated with the second diversion channel 310 through the first flow port 410, and the inflow cavity 120 is communicated with the first diversion channel 230 through the second flow port 420. The seal 400 is designed to shield a small amount of non-expelled insoluble particles remaining in the inflow chamber 120 from the back flow into the bearing member 220, thereby preventing the bearing member 220 from being partially blocked.
In some embodiments, the outer wall of the seal 400 is circumferentially provided with a plurality of first flow openings 410 and a plurality of second flow openings 420, the first flow openings 410 alternating with and spaced from the second flow openings 420. In a specific embodiment, the outer wall of the sealing member 400 is provided with three first flow openings 410 and three second flow openings 420 along the circumferential direction, three second flow channels 310 are provided on the outer wall of the supporting sleeve 300, each first flow opening 410 is in butt joint communication with the second flow channel 310, and the three second flow openings 420 are annularly distributed along the outer circumference of the sealing member 400 and are further in butt joint communication with the annular first flow channels 230. Through the above arrangement, after the liquid in the backflow cavity 120 can flow through the annular first diversion channel 230 under the action of the pressure difference, the liquid is subdivided into three sub-backflow channels to flow back to the inflow cavity 120 under the existence of the three second flow openings 420, so that the liquid initially in the inflow cavity 120 is prevented from flowing into the first diversion channel 230, the liquid in the first diversion channel 230 and the liquid in the second diversion channel 310 are prevented from being interfered with each other, the liquid can accurately circulate according to the above flow path, and the insoluble particles are ensured to be completely discharged.
Referring again to fig. 1 to 3, in some embodiments of the present application, to facilitate the circulating flow of the liquid and the docking of the whole diversion transmission apparatus with the pump apparatus, a first pipeline 160, a second pipeline 170 and a third pipeline 180 are further provided in the housing 100, the filling port 140 and the inflow cavity 120 are respectively communicated with the pump apparatus through the first pipeline 160 and the third pipeline 180, and the liquid outlet 150 is communicated with the inflow cavity 120 through the second pipeline 170.
In some embodiments, when the flow guiding transmission device of the present application is used in conjunction with a blood pump system, the end of the rotating shaft 210 near the inflow cavity 120 in the flow guiding transmission device is connected to the rotating impeller or the rotating paddle of the pump device through a flexible transmission shaft, which may be designed as a multi-cavity structure to form the second pipeline 170 and the third pipeline 180, and the flexible transmission shaft may be selected as a transmission twisted wire.
The liquid enters the first pipeline 160 through the filling port 140, and when flowing through the pump device, insoluble particles generated by the pump device flow back into the inflow cavity 120 through the third pipeline 180, and then flow out from the second pipeline 170 to the liquid outlet 150 after passing through the circulating flow path in the diversion transmission device. By the mode, insoluble particles generated in the whole device and the blood pump system in the operation process all flow out of the body, the function that almost zero particles enter the human body is realized, and the safety of a patient in the operation process is practically ensured.
Specifically, the bearing chamber 110, the inflow chamber 120 and the return chamber 130 are all cylindrical chambers, the axis of the bearing chamber 110, the axis of the inflow chamber 120 and the axis of the return chamber 130 are in the same straight line, and the first pipeline 160, the second pipeline 170 and the third pipeline 180 are all cylindrical pipelines, so that the liquid can accurately circulate according to the above flow path, and insoluble particles can be indirectly prevented from flowing into the pump device and further entering the human body, thereby causing damage to the human body.
In some embodiments of the present application, the support sleeve 300 is made of a metal, preferably an aluminum alloy, that protects the support sleeve 300 from corrosion by liquids. Through setting up support sleeve 300 into metal construction, increase the bulk strength of support sleeve 300, in order to provide a stable outer support for bearing member 220, avoid bearing member 220 to do the skew from top to bottom when rotary motion, simultaneously, metal support sleeve 300 heat conductivity is strong, can provide good heat conduction and heat dissipation condition for a large amount of heats that bearing member 220 of high-speed rotation produced, make the heat on the bearing member 220 transmit for support sleeve 300 through the heat conduction effect, and then be absorbed by the liquid that flows through support sleeve 300, strengthened the cooling effect of liquid to bearing member 220.
Of course, in other embodiments, the support sleeve 300 may be made of plastic, preferably high strength engineering plastic, to increase the strength and rigidity of the support sleeve 300. Although the plastic support sleeve 300 has a lower thermal conductivity than the metal support sleeve, it is lighter in weight and less costly, and also provides a stable outer support for the bearing member 220.
Furthermore, in some embodiments of the present application, the bearing member 220 is a hybrid ceramic bearing. It should be noted that, the conventional bearing member is made of stainless steel material, the stainless steel bearing is easily corroded by oxygen in the liquid when immersed in the liquid for a long time, so as to generate insoluble particulate oxide, and the stainless steel bearing is easily pitted under the local high temperature condition generated by high-speed rotation, so that micropores appear in the stainless steel bearing to affect the circulating flow of the liquid and the structural stability of the bearing. In such embodiments, however, by designing the bearing member 220 as a hybrid ceramic bearing, first, the hybrid ceramic bearing has a higher heat resistance than a stainless steel bearing, compared to a conventional stainless steel bearing, so that the bearing member 220 can maintain a stable structural size under short-term high-temperature adjustment; in addition, the hardness of the mixed ceramic bearing is higher, so that the mixed ceramic bearing has better wear resistance, and insoluble particles generated by high-speed rotation friction of the bearing piece 220 can be reduced to a certain extent; thirdly, the hybrid ceramic bearing has better self-lubricity, considering that the whole diversion transmission device works under the liquid environment, the bearing piece 220 cannot be lubricated by adding lubricating oil in the high-speed running process of the bearing piece 220, and obviously, the hybrid ceramic bearing with good self-lubricity is more suitable for working in the liquid environment than the traditional stainless steel bearing.
Of course, the bearing member 220 may also be one of a ceramic bearing and a metal bearing. Similarly, ceramic bearings and metal bearings have higher strength, hardness and wear resistance, and are more suitable for working in a liquid environment than conventional stainless steel bearings.
In addition, the application also discloses a blood pump system, which comprises a pump device, an external driving piece and the diversion transmission device, wherein the external driving piece is connected with a rotary impeller in the pump device through a rotating shaft 210, and the liquid filling port 140 and the inflow cavity 120 are connected with the pump device through pipelines.
Specifically, in some embodiments, the extracorporeal drive is directly connected to a rotating impeller within the pump apparatus via a shaft 210; in other embodiments, the extracorporeal drive is connected to the flexible drive shaft via a shaft 210, via which the rotary impeller in the pump apparatus is indirectly connected.
In some embodiments, the external driving member may be preferably a magnetic transmission driving structure, where the magnetic transmission driving structure is a power transmission function for converting non-contact electric energy into mechanical energy by using an electromagnetic principle, and the magnet structure at the driven end of the magnetic transmission driving structure may be disposed on the rotating shaft 210 located at one side of the backflow cavity 130, and the magnet structure at the driving end and the magnet structure at the driven end of the magnetic transmission driving structure are non-contact magnetic coupling structures, so that the magnetic transmission driving structure drives the rotating impeller in the pump device directly or indirectly through the rotating shaft 210 to rotate, so as to drive the blood circulation to flow, thereby realizing the function of pumping blood.
Because the blood pump system of the application is provided with the diversion transmission device, when the whole blood pump system operates, liquid circularly flows along the flow path in the diversion transmission device, insoluble particles and a large amount of heat generated in the synchronous rotation process of the bearing piece 220 and the rotating shaft 210 can be effectively and timely discharged, the phenomenon that the normal operation of the bearing piece 220 and the whole transmission assembly 200 is influenced due to the accumulation of the insoluble particles in the bearing piece 220 and the bearing cavity 110 is avoided, and the damage to the human body caused by the fact that the insoluble particles enter the human body through the pump device is also prevented.
Meanwhile, the heat exchange efficiency of the liquid and the bearing piece 220 is effectively improved, so that a large amount of heat generated by the bearing piece 220 in the operation process can be discharged in time, structural damage caused by overheating of the bearing piece 220 is avoided, normal operation of the diversion transmission device and the whole blood pump system is ensured, and the whole service lives of the bearing piece 220, the transmission assembly 200 and the blood pump system are indirectly prolonged.
Although the present application is not limited to the embodiments, those skilled in the art will readily appreciate that various modifications and substitutions are possible, and these are within the scope of the embodiments disclosed herein. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.
Claims (11)
1. A flow directing drive comprising:
the device comprises a shell, a first pipeline, a second pipeline, a third pipeline, a bearing cavity, an inflow cavity and a backflow cavity, wherein the inflow cavity and the backflow cavity are respectively arranged on two sides of the bearing cavity, a liquid filling port and a liquid outlet are further arranged at intervals and are communicated with the inflow cavity, the liquid filling port and the inflow cavity are respectively communicated with a pump device through the first pipeline and the third pipeline, and the liquid outlet is communicated with the inflow cavity through the second pipeline;
the transmission assembly comprises a rotating shaft and at least one bearing piece sleeved on the rotating shaft, a first diversion channel is formed in a gap between an inner ring and an outer ring of the bearing piece, and two ends of the first diversion channel are respectively communicated with the inflow cavity and the reflux cavity;
the guide assembly comprises a support sleeve, the support sleeve is fixedly embedded in the bearing cavity and sleeved on the bearing piece, at least one second guide channel is formed in the outer wall of the support sleeve along the circumferential direction, and two ends of the second guide channel are respectively communicated with the inflow cavity and the backflow cavity.
2. The flow guiding transmission device according to claim 1, wherein the flow guiding assembly further comprises a flow guiding sleeve, the at least one bearing piece comprises a first bearing and a second bearing, the flow guiding sleeve is sleeved on the rotating shaft and is clamped between the first bearing and the second bearing, a gap between an inner ring and an outer ring of the first bearing forms a first sub-flow guiding channel, a gap between an inner ring and an outer ring of the second bearing forms a second sub-flow guiding channel, a spiral groove is formed in the outer wall of the flow guiding sleeve, and the inflow cavity, the first sub-flow guiding channel, the spiral groove, the second sub-flow guiding channel and the backflow cavity are sequentially communicated.
3. The flow guiding transmission device according to claim 1, wherein the flow guiding assembly further comprises an impeller, the at least one bearing member comprises a first bearing and a second bearing, the impeller is sleeved on the rotating shaft and is clamped between the first bearing and the second bearing, a gap between an inner ring and an outer ring of the first bearing forms a first sub-flow guiding channel, a gap between the inner ring and the outer ring of the second bearing forms a second sub-flow guiding channel, a plurality of flow guiding blades are circumferentially arranged on the outer wall of the impeller, flow guiding grooves are formed between two adjacent flow guiding blades, and the inflow cavity, the first sub-flow guiding channel, the flow guiding grooves, the second sub-flow guiding channel and the backflow cavity are sequentially communicated.
4. A inducer transmission as claimed in claim 3, wherein the inducer blade is inclined relative to the axis of rotation.
5. The inducer transmission of any one of claims 1 to 4 wherein the support sleeve is circumferentially formed with a plurality of second inducer channels.
6. The flow guiding transmission device according to claim 1, further comprising a sealing member, wherein the sealing member is sleeved on the rotating shaft and is attached to one end, close to the inflow cavity, of the bearing member, a first flow port and a second flow port are respectively formed in the outer wall of the sealing member, the inflow cavity is communicated with the second flow guiding channel through the first flow port, and the inflow cavity is communicated with the first flow guiding channel through the second flow port.
7. The inducer transmission of claim 6 wherein the outer wall of the seal is circumferentially provided with a plurality of the first flow openings and a plurality of the second flow openings, the first flow openings alternating with and spaced from the second flow openings.
8. The flow directing transmission as defined in claim 1, wherein the bearing chamber, the inflow chamber and the return chamber are all cylindrical chambers, and the axes of the bearing chamber, the inflow chamber and the return chamber are on a common straight line.
9. The inducer transmission of claim 1 wherein the support sleeve is made of metal or plastic.
10. The inducer transmission of claim 1 wherein the bearing member is one of a hybrid ceramic bearing, a ceramic bearing and a metal bearing.
11. A blood pump system comprising a pump device, an external drive member and a flow guiding transmission device according to any one of claims 1 to 10, wherein the external drive member is connected to a rotary impeller in the pump device through the rotary shaft, and the filling port and the inflow cavity are both connected to the pump device through pipelines.
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| CN202111301240.1A CN113926074B (en) | 2021-11-04 | 2021-11-04 | Diversion transmission device and blood pump system |
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| CN202111301240.1A CN113926074B (en) | 2021-11-04 | 2021-11-04 | Diversion transmission device and blood pump system |
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| CN113926074B true CN113926074B (en) | 2023-10-31 |
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| CN116271504B (en) * | 2023-02-02 | 2023-11-28 | 南京医科大学第二附属医院 | Intervention type blood pump |
| CN116531654B (en) * | 2023-05-18 | 2023-11-07 | 苏州心岭迈德医疗科技有限公司 | Micro pump |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206136A (en) * | 2015-01-22 | 2017-09-26 | Ecp发展有限责任公司 | The pipe guide of the protection device of separator and function element including contained magnetic-particle in retention fluid |
| CN108472424A (en) * | 2015-10-14 | 2018-08-31 | 关键核心技术有限公司 | Membrane type conduit |
| WO2019033012A1 (en) * | 2017-08-11 | 2019-02-14 | Antaki James F | Blood-immersed bearing system for a blood pump |
| CN110325228A (en) * | 2017-02-13 | 2019-10-11 | 卡迪奥布里奇有限公司 | Catheter pump with driving unit and conduit |
| CN110393846A (en) * | 2019-08-01 | 2019-11-01 | 昕涌医疗器械(上海)有限公司 | A kind of power source can be placed in the intracorporal rotary drive conduit of people |
| CN212662465U (en) * | 2016-12-19 | 2021-03-09 | 阿比奥梅德公司 | Heart pump with passive purification system |
| CN112791305A (en) * | 2021-01-22 | 2021-05-14 | 苏州心擎医疗技术有限公司 | Blood pump and power transmission assembly thereof |
| CN112891732A (en) * | 2021-05-07 | 2021-06-04 | 丰凯医疗器械（上海）有限公司 | Perfusate conveying device and control method thereof |
| CN113069684A (en) * | 2021-03-22 | 2021-07-06 | 湖南埃普特医疗器械有限公司 | Sealing structure of micro blood pump, handle head assembly of micro blood pump and micro blood pump |
| CN113244525A (en) * | 2021-05-11 | 2021-08-13 | 丰凯医疗器械（上海）有限公司 | Transmission is supported and is shunted structure and pump blood pipe |
-
2021
- 2021-11-04 CN CN202111301240.1A patent/CN113926074B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206136A (en) * | 2015-01-22 | 2017-09-26 | Ecp发展有限责任公司 | The pipe guide of the protection device of separator and function element including contained magnetic-particle in retention fluid |
| CN112569451A (en) * | 2015-01-22 | 2021-03-30 | Ecp发展有限责任公司 | Catheter device comprising a separation device for trapping magnetic particles contained in a fluid and a protection device for a functional element |
| CN108472424A (en) * | 2015-10-14 | 2018-08-31 | 关键核心技术有限公司 | Membrane type conduit |
| CN212662465U (en) * | 2016-12-19 | 2021-03-09 | 阿比奥梅德公司 | Heart pump with passive purification system |
| CN110325228A (en) * | 2017-02-13 | 2019-10-11 | 卡迪奥布里奇有限公司 | Catheter pump with driving unit and conduit |
| WO2019033012A1 (en) * | 2017-08-11 | 2019-02-14 | Antaki James F | Blood-immersed bearing system for a blood pump |
| CN110393846A (en) * | 2019-08-01 | 2019-11-01 | 昕涌医疗器械(上海)有限公司 | A kind of power source can be placed in the intracorporal rotary drive conduit of people |
| CN112791305A (en) * | 2021-01-22 | 2021-05-14 | 苏州心擎医疗技术有限公司 | Blood pump and power transmission assembly thereof |
| CN113069684A (en) * | 2021-03-22 | 2021-07-06 | 湖南埃普特医疗器械有限公司 | Sealing structure of micro blood pump, handle head assembly of micro blood pump and micro blood pump |
| CN112891732A (en) * | 2021-05-07 | 2021-06-04 | 丰凯医疗器械（上海）有限公司 | Perfusate conveying device and control method thereof |
| CN113244525A (en) * | 2021-05-11 | 2021-08-13 | 丰凯医疗器械（上海）有限公司 | Transmission is supported and is shunted structure and pump blood pipe |
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| CN113926074A (en) | 2022-01-14 |
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Address after: No.36, Lane 100, Banxia Road, Pudong New Area, Shanghai, 201318 Applicant after: Fengkaili medical instrument (Shanghai) Co.,Ltd. Address before: No.36, Lane 100, Banxia Road, Pudong New Area, Shanghai, 201318 Applicant before: FORQALY MEDICAL (SHANGHAI) Co.,Ltd. |
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