CN218793559U - Blood pumping transmission device and blood pumping equipment - Google Patents

Abstract

The application provides a pump blood transmission device and pump blood equipment. The blood pumping transmission device comprises a shell, a transmission assembly and a blocking assembly, and a cavity is formed in the shell. The transmission assembly comprises a rotating shaft penetrating through the cavity and a bearing sleeved on the rotating shaft, and the bearing is arranged in the cavity. The separation assembly is arranged in the cavity and sleeved on the rotating shaft, and is used for reducing the flow cross-sectional area of liquid in the cavity. According to the embodiment of the application, the service life of the pump blood transmission device can be effectively prolonged.

Description

Blood pumping transmission device and blood pumping equipment

Technical Field

The application relates to the technical field of medical equipment, in particular to a blood pumping transmission device and blood pumping equipment.

Background

Currently, cardiovascular diseases have become a significant cause of human death, and heart transplantation is an effective means for treating patients with critical heart diseases, however, in reality, there are far more heart recipients than heart donors, resulting in death of patients waiting for heart transplantation. The percutaneous blood pumping auxiliary equipment can assist the heart in pumping blood, and is common equipment for assisting in treating cardiovascular diseases. The percutaneous blood pumping auxiliary equipment comprises a pump body, a transmission device, a conduit connected between the transmission device and the pump body and an in-vitro driving device.

The transmission device can flow with perfusate, and insoluble particles generated by the rotation of elements such as a bearing or a rotating shaft exist in the perfusate, and the insoluble particles can cause the damage of the bearing or other parts of the percutaneous blood pumping auxiliary equipment. In view of the foregoing, there is a need for an improved blood pumping device.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the present application provides a blood pumping transmission device and blood pumping equipment, can effectively promote blood pumping transmission device's life.

First aspect, this application embodiment provides a pump blood transmission, and pump blood transmission includes casing, drive assembly and separation subassembly, and the cavity has been seted up to casing inside. The transmission assembly comprises a rotating shaft penetrating through the cavity and a bearing sleeved on the rotating shaft, and the bearing is arranged in the cavity. The separation assembly is arranged in the cavity and sleeved on the rotating shaft, and is used for reducing the flow cross-sectional area of liquid in the cavity.

In some embodiments of the first aspect, the housing is provided with a liquid discharge port, and the barrier assembly is located on a proximal side of the liquid discharge port in an axial direction of the cavity.

In some embodiments of the first aspect, the blocking assembly is an interference fit with an inner wall of the cavity, and the blocking assembly is a clearance fit with the shaft.

In some embodiments of the first aspect, the cavity includes a perfusion cavity and a reflux cavity that are in communication with each other, the perfusion cavity is located at a proximal side of the reflux cavity, and the bearing is disposed in the perfusion cavity.

In some embodiments of the first aspect, the blocking assembly comprises a first blocking member disposed between the perfusion chamber and the flashback chamber.

In some embodiments of the first aspect, the first barrier is provided with a through hole.

In some embodiments of the first aspect, the perfusion chamber comprises an inflow chamber and a bearing chamber in communication with each other, the inflow chamber being located on a proximal side of the bearing chamber, and the bearing being located within the bearing chamber.

In some embodiments of the first aspect, the barrier assembly comprises a second barrier disposed between the inflow cavity and the bearing cavity.

In some embodiments of the first aspect, the second barrier is provided with apertures.

In a second aspect, embodiments of the present application provide a blood pumping apparatus, which includes the blood pumping transmission device in any one of the embodiments of the first aspect.

The utility model provides a pump blood transmission and pump blood equipment, through set up the separation subassembly in pump blood transmission, the separation subassembly can be spaced apart bearing and other positions in the pump blood transmission, in order to reduce the cross-flow sectional area of the liquid between bearing and the other positions in the pump blood transmission, and then reduced the insoluble particle effectively and passed through the free mobile path that flows between bearing and other positions in the pump blood transmission, and then can reduce effectively or avoid the insoluble particle of dissociating in liquid to enter into in bearing or other positions in the pump blood transmission and cause the phenomenon of damage to bearing or other positions in the pump blood transmission and take place, the holistic life of pump blood transmission has been promoted.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a blood pumping device according to some embodiments of the present disclosure;

FIG. 2 is a schematic view of an irrigation actuator according to some embodiments of the present disclosure;

fig. 3 isbase:Sub>A schematic sectional view taken alongbase:Sub>A-base:Sub>A of fig. 2.

The reference numerals in the detailed description are as follows:

10. a housing; 11. a cavity; 111. filling the cavity; 1111. an inflow chamber; 1112. a bearing cavity; 112. a reflux cavity; 12. a first filling port; 13. a second infusion port; 14. a liquid discharge port; 15. a first perfusion channel; 151. a drainage section; 16. a second perfusion channel; 20. a transmission assembly; 21. a rotating shaft; 22. a bearing; 30. a barrier assembly; 31. a first barrier; 311. a through hole; 32. a second barrier; 321. a pore; 40. a flow-through switch; 50. a connecting member; 100. a pump blood transmission; 200. an extracorporeal drive device; 300. a pump body; 400. a conduit.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should be understood as having a common meaning as understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise specified.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" are used "

The references to "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are based on the orientation or positional relationship shown in the drawings and are intended only to facilitate the description of the embodiments and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The percutaneous blood pumping auxiliary equipment can assist the heart in pumping blood, and is common equipment for assisting in treating cardiovascular diseases. The percutaneous blood pumping auxiliary equipment comprises a pump body, a transmission device, a conduit connected between the transmission device and the pump body and an in-vitro driving device. The transmission device comprises a rotating shaft and a bearing sleeved on the rotating shaft, one end of the rotating shaft is connected with the output end of the external driving device, and the other end of the rotating shaft is connected with the impeller in the pump body through a guide pipe so as to drive the impeller to rotate.

The inventor of the present application has noted that the perfusate may flow in the transmission device, and insoluble particles generated by the rotation of elements such as a bearing or a rotating shaft exist in the perfusate, and the insoluble particles may cause damage to the bearing or other parts of the percutaneous blood pumping auxiliary equipment. In view of the foregoing, there is a need for an improved blood pumping device.

The inventor of the application discovers that the blocking assembly can be arranged in the transmission device, the blocking assembly can enable the bearing to be spaced from other parts in the transmission device, so that the flow cross-sectional area of liquid between the bearing and other parts in the transmission device is reduced, the moving path of insoluble particles which freely flow between the bearing and other parts in the transmission device through the liquid is reduced, the phenomenon that the insoluble particles which freely flow in the liquid enter the bearing or other parts in the transmission device to damage the bearing or other parts in the transmission device is effectively reduced, and the service life of the whole transmission device can be prolonged.

In order to solve the prior art problem, the embodiment of the application provides a blood pumping transmission device and blood pumping equipment, can effectively promote blood pumping transmission device's life. The blood pumping device provided by the embodiment of the present application will be described first.

Fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A blood pumping apparatus according to some embodiments of the present disclosure, fig. 2 isbase:Sub>A schematic structural diagram ofbase:Sub>A perfusion transmission device according to some embodiments of the present disclosure, and fig. 3 isbase:Sub>A schematic structural diagram ofbase:Sub>A cross section alongbase:Sub>A-base:Sub>A of fig. 2.

As shown in fig. 1 to 3, an embodiment of the present application provides a blood pumping device 100 for a blood pumping apparatus, the blood pumping device 100 includes a housing 10, a transmission assembly 20, and a blocking assembly 30, and a cavity 11 is opened inside the housing 10. The transmission assembly 20 includes a rotating shaft 21 penetrating the cavity 11 and a bearing 22 sleeved on the rotating shaft 21, and the bearing 22 is disposed in the cavity 11. The blocking assembly 30 is disposed in the cavity 11 and sleeved on the rotating shaft 21, and the blocking assembly 30 is used for reducing the cross-sectional area of the liquid in the cavity 11.

The blood pumping equipment in the embodiment of the application can assist the heart in pumping blood, and is common equipment for assisting in treating cardiovascular diseases. The blood pumping device comprises a pump body 300, a blood pumping transmission device 100, a guide pipe 400 connected between the blood pumping transmission device 100 and the pump body 300, and an in-vitro driving device 200, wherein the pump body 300 comprises an impeller, the blood pumping transmission device 100 is connected between the pump body 300 and the in-vitro driving device 200, the blood pumping transmission device 100 comprises a rotating shaft 21 and a bearing 22 sleeved on the rotating shaft 21, one end of the rotating shaft 21 is connected with the output end of the in-vitro driving device 200, and the other end of the rotating shaft 21 is connected with the impeller in the pump body 300 through the guide pipe 400 so as to drive the impeller to rotate. In use of the blood pumping device, the end close to the operator is referred to as the proximal end, and the end far away from the operator is referred to as the distal end. It is noted that the shaft 21 extends distally along the catheter 400, and in fig. 2, the shaft 21 at the distal portion is omitted to show the lumens 11 and passages for clarity.

Alternatively, the housing 10 may be made of a metal material or a non-metal material, for example, the metal material may be, but is not limited to, metal such as aluminum, copper or titanium, and a compound thereof, and the non-metal material may be, but is not limited to, polyethylene, polypropylene, rubber, or the like.

The barrier assembly 30 reduces the cross-sectional area of fluid flow between the bearing 22 and other locations within the pump drive 100. Illustratively, other locations within the pump-blood driving device 100 may be, but are not limited to, a side region within the cavity 11 and located at a proximal end of the bearing 22, a side region within the cavity 11 and located at a distal end of the bearing 22, the pump body 300, a portion of the shaft 21 within the catheter 400, or the connecting component 50 disposed at a proximal end of the cavity 11.

Specifically, there are free insoluble particles in the liquid in the cavity 11 that can be released through the liquid into the bearing 22 or other locations within the pump jack 100, thereby causing damage to the bearing 22 or other locations within the pump jack 100.

Thus, in the above technical solution, by providing the blocking component 30, the blocking component 30 can separate the bearing 22 from other parts in the blood pumping transmission device 100, so as to reduce the flow cross-sectional area of the liquid between the bearing 22 and other parts in the blood pumping transmission device 100, further effectively reduce the moving path of the insoluble particles through the free flow of the liquid between the bearing 22 and other parts in the blood pumping transmission device 100, further effectively reduce or avoid the phenomenon that the insoluble particles free in the liquid enter the bearing 22 or other parts in the blood pumping transmission device 100 to damage the bearing 22 or other parts in the blood pumping transmission device 100, and improve the service life of the whole blood pumping transmission device 100.

In some alternative embodiments, the barrier assembly 30 is a unitary structure with the housing 10.

The housing 10 may be formed by integrally molding the barrier assembly 30 through a related process, such that the barrier assembly 30 and the housing 10 are of an integral structure. On one hand, the blocking assembly 30 is not required to be connected with the inner wall of the cavity 11 through additional connection processes such as bolt connection or bonding, and the manufacturing process flow of the blocking assembly 30 is simplified. Meanwhile, compared with the connection process of bolt connection or bonding and the like, the inner wall of the cavity 11 is connected with the blocking component 30, and the blocking component 30 and the inner wall of the cavity 11 which are of the integrated structure have higher connection firmness.

In some embodiments, the blocking assembly 30 is in interference fit with the inner wall of the cavity 11, and the blocking assembly 30 is in clearance fit with the rotating shaft 21.

In this application embodiment, separation subassembly 30 inlays admittedly in cavity 11, and with the inner wall interference fit of cavity 11 to improve separation subassembly 30's steadiness, can reduce effectively or avoid separation subassembly 30 to produce the displacement and cause the phenomenon emergence of separation inefficacy along cavity 11 axial.

The blocking component 30 is sleeved on the rotating shaft 21 and is in clearance fit with the rotating shaft 21, so that on one hand, the influence on the normal rotation of the rotating shaft 21 can be avoided; on the other hand, the liquid in the cavity 11 can flow through the gap between the blocking assembly 30 and the rotating shaft 21, and the influence of the blocking assembly 30 on the liquid flow in the cavity 11 can be reduced.

In some embodiments of the present application, a first filling port 12, a second filling port 13 and a liquid discharge port 14 are spaced apart from each other on the housing 10, and a first filling channel 15 and a second filling channel 16 are further opened inside the housing 10. The cavity 11 comprises a perfusion cavity 111 and a reflux cavity 112 which are communicated with each other, the perfusion cavity 111 is positioned at the proximal end side of the reflux cavity 112, and the bearing 22 is arranged in the perfusion cavity 111.

One end of the first filling channel 15 is communicated with the first filling port 12, the other end is communicated with the filling cavity 111, the bearing 22 is arranged in the filling cavity 111, the liquid outlet 14 is communicated with the backflow cavity 112, and the filling cavity 111 is communicated with the backflow cavity 112. Illustratively, the fluid enters the first perfusion channel 15 through the first perfusion port 12, then enters the perfusion lumen 111 from the first perfusion channel 15, then flows into the return lumen 112, and finally exits the pump blood drive device 100 through the drain port 14. Since the bearing 22 is disposed in the filling cavity 111, the liquid can flow through the bearing 22, and further, heat generated during the operation of the bearing 22 can be discharged, and insoluble particles generated during the rotation of the bearing 22 or the rotating shaft 21 can be carried away. The service life of the bearing 22 can be increased, and the reliability of the whole blood pumping transmission device 100 can be effectively improved.

The second perfusion channel 16 is located inside the catheter 400, and one end of the second perfusion channel 16 is communicated with the second perfusion port 13, and the other end is communicated with the reflux cavity 112. The liquid enters the second perfusion channel 16 through the second perfusion port 13, and after the liquid in the second perfusion channel 16 reaches the distal end of the second perfusion channel 16, a part of the liquid flows into the human body, and another part of the liquid returns to the return cavity 112 of the pump blood transmission device 100. The liquid flowing in from the first filling line and the liquid returning from the second filling line are collected in the return chamber 112 and then discharged together through the discharge port 14. It should be noted that, because of the large tube resistance in the second perfusion channel 16, the liquid flowing from the first perfusion line does not enter the human body through the second perfusion line.

Alternatively, the fluid may be, but is not limited to, a liquid such as a heparin solution of dextrose or a heparin solution of physiological saline.

Alternatively, the first infusion port 12 and/or the second infusion port 13 may be connected to an infusion pump and an infusion bag, the infusion pump pumping fluid from the infusion bag into the infusion chamber 111 through the first infusion port 12, and/or the infusion pump pumping fluid from the infusion bag into the second infusion channel 16 through the second infusion port 13. Drain port 14 may be connected to a drain pump that pumps liquid from the return chamber 112 into a waste bag and a waste bag.

In some embodiments, the first perfusion channel 15 includes a drainage segment 151, the drainage segment 151 extending from a location proximate the first perfusion port 12 towards the proximal end of the housing 10.

The drainage segment 151 is used to guide the liquid flowing from the first infusion port 12 into the infusion chamber 111. Illustratively, the flow-inducing section 151 may open between an outer wall and an inner wall of the housing 10.

Alternatively, the flow-directing section 151 and the housing 10 may be of an integrally formed structure. The casing 10 is integrally formed with the flow guiding section 151 between the outer wall and the inner wall thereof through a related process, so that the flow guiding section 151 and the casing 10 are of an integrated structure. On one hand, the flow guiding section 151 and the shell 10 do not need to be connected through additional connection processes such as welding or bonding, and the manufacturing process flow of the flow guiding section 151 is simplified. Meanwhile, compared with the connection process of welding or bonding and the like, the drainage segment 151 and the shell 10 are connected, and the drainage segment 151 and the shell 10 which are of the integrated structure have higher connection firmness.

Among the above-mentioned technical scheme, through setting up drainage section 151, drainage section 151 extends to the near-end of casing 10 from the position that is close to first infusion mouth 12, and guide liquid flows into from first infusion mouth 12 and fills the chamber 111 in, can make the position that sets up of first infusion mouth 12 more nimble. In other words, due to the drainage segment 151, the opening position of the first perfusion opening 12 is no longer limited to a position close to the perfusion cavity 111, and the first perfusion opening 12 can also be opened at a position relatively far away from the perfusion cavity 111 and then communicated with the perfusion cavity 111 through the drainage segment 151. Thereby effectively improving the flexibility of the structural design of the blood pumping transmission device 100.

In some embodiments, a flow switch 40 is disposed between the perfusion chamber 111 and the reflux chamber 112, and the flow switch 40 is used for unidirectional fluid flow in the direction from the perfusion chamber 111 to the reflux chamber 112.

In the present embodiment, a portion of the fluid in the flashback chamber 112 is fluid flowing from the first infusion line, and another portion is fluid returning from the second infusion line. When the pressure of the liquid in the backflow cavity 112 is high, the liquid in the backflow cavity 112 flows back to the filling cavity 111 easily, and insoluble particles exist in the liquid in the backflow cavity 112, so that the insoluble particles flow back to the filling cavity 111 along with the liquid, and damage is caused to the bearing 22.

Among the above-mentioned technical scheme, through set up circulation switch 40 between filling chamber 111 and backward flow chamber 112, liquid flows into filling chamber 111 back through first mouth 12 of filling, flow back in the chamber 112 through circulation switch 40 reentry, circulation switch 40 can make liquid along filling chamber 111 to backward flow chamber 112 direction upward unidirectional flow, circulation switch 40 can stop the backward flow of liquid effectively promptly, and then can reduce effectively or avoid the liquid in the backward flow chamber 112 to take place because of the too big phenomenon that flows back to filling chamber 111 of pressure, the reliability of pump blood transmission device 100 has further been improved.

Alternatively, the flow switch 40 may be, but is not limited to, a spring-type check valve, a gravity-type check valve, or a swing-type check valve, etc.

In some embodiments, barrier assembly 30 is located on a proximal side of drain port 14 in an axial direction of lumen 11. So that barrier assembly 30 can avoid the liquid flow path during the process of liquid returning from the second filling line entering into backflow cavity 112 and then being discharged through liquid discharge port 14, and further, the influence of barrier assembly 30 on the discharge effect of wear particles carried in the liquid returning from the second filling line can be avoided.

In some embodiments, the blocking assembly 30 includes a first blocking member 31, and the first blocking member 31 is disposed between the perfusion chamber 111 and the reflux chamber 112.

As described above, after the fluid in the second perfusion channel 16 reaches the distal end of the second perfusion channel 16, a portion of the fluid flows into the body, and another portion of the fluid returns to the return lumen 112 of the pump drive 100. In the present embodiment, a part of the rotating shaft 21 is disposed in the second perfusion channel 16, so there are wear particles generated by the rotation of the rotating shaft 21 in the liquid returning from the distal end of the second perfusion channel 16 to the return cavity 112 of the pump blood transmission device 100. Since the return chamber 112 and the filling chamber 111 communicate with each other, the wear particles may be dissociated into the bearing 22 located in the filling chamber 111 by the liquid, thereby causing damage to the bearing 22.

In the above technical solution, by providing the first blocking member 31 between the filling cavity 111 and the return cavity 112, the bearing 22 and the return cavity 112 can be separated to reduce the flow cross-sectional area of the liquid between the bearing 22 and the return cavity 112, so as to reduce the moving path of the wear particles dissociated in the liquid in the return cavity 112, and effectively reduce the liquid in the second filling channel 16 and the wear particles carried by the liquid from entering the bearing 22. The service life of the bearing 22, i.e. the pump drive 100, is further increased.

In some embodiments, the first barrier 31 is provided with a through hole 311.

Illustratively, the through hole 311 penetrates the first blocking member 31 along the axial direction of the perfusion chamber 111, and the liquid can flow through the through hole 311 on the first blocking member 31, so as to appropriately increase the flow rate of the liquid, and at the same time, facilitate the discharge of insoluble particles generated by the rotation of the bearing 22 existing in the liquid. It should be noted that the ratio of the through hole 311 on the first blocking member 31 is small, and therefore, the blocking effect of the first blocking member 31 itself is not affected by the arrangement of the through hole 311, or the effect of the through hole 311 on the blocking effect of the first blocking member 31 itself is negligible.

Optionally, the number of the through holes 311 may be one, two or more, and the specific number of the through holes 311 is not limited in this application and may be selected according to actual situations.

In some embodiments, irrigation lumen 111 includes an inflow lumen 1111 and a bearing lumen 1112 in communication with each other, inflow lumen 1111 located on a proximal side of bearing lumen 1112 and bearing 22 located within bearing lumen 1112.

Illustratively, one end of the first perfusion port 12 is communicated with the inflow cavity 1111, and the other end is communicated with the first perfusion port 12. Fluid enters the first infusion channel 15 through the first infusion port 12, then enters the inflow lumen 1111, then enters the bearing lumen 1112, then flows into the return lumen 112, and finally exits the pump drive 100 through the drain port 14. Since the bearing 22 is disposed in the bearing cavity 1112, the liquid first enters the inflow cavity 1111 and then enters the bearing cavity 1112, so that the liquid flows from the proximal side of the bearing 22 to the distal side of the bearing 22, which can effectively improve the effect of carrying out the insoluble particles generated during the rotation of the bearing 22 by the liquid flowing through the bearing 22, and further can further improve the service life of the bearing 22.

In some embodiments, the barrier assembly 30 includes a second barrier 32, the second barrier 32 being disposed between the inflow chamber 1111 and the bearing chamber 1112.

In the embodiment of the present application, the proximal end side of the inflow lumen 1111 is provided with a connecting component 50, the connecting component 50 is connected to the rotating shaft 21, and the extracorporeal drive device 200 of the blood pumping apparatus is coupled to the connecting component 50 to drive the rotating shaft 21 of the blood pumping transmission device 100 to rotate. The liquid in the bearing cavity 1112 can carry out the insoluble particles generated during the rotation of the bearing 22 after flowing through the bearing 22, the insoluble particles are dissociated in the liquid, the bearing cavity 1112 and the inflow cavity 1111 are communicated with each other, and the connecting part 50 is also in the liquid environment, so that the insoluble particles dissociated in the liquid are easy to dissociate in the connecting part 50 through the liquid, and further damage is caused to the connecting part 50.

In the above technical solution, by providing the second blocking member 32 between the inflow chamber 1111 and the bearing chamber 1112, the bearing 22 and the connection member 50 can be spaced apart from each other to reduce the flow cross-sectional area of the liquid between the bearing 22 and the connection member 50, and further reduce the moving path of the insoluble particles dissociated in the liquid, thereby effectively reducing or avoiding the occurrence of the phenomenon that the insoluble particles dissociated in the liquid enter the connection member 50 to damage the connection member 50, and further improving the service life of the whole blood pump transmission device 100.

In some embodiments, the second blocking member 32 is provided with an aperture 321, the aperture 321 can allow the liquid to pass through and can block the insoluble particles from passing through, so that the flow rate of the liquid can be increased, and meanwhile, the phenomenon that the insoluble particles free in the liquid enter the connecting part 50 to damage the connecting part 50 can be further reduced or avoided.

Alternatively, the number of the apertures 321 may be one, two or more, and the specific number of the apertures 321 is not limited in this application and may be selected according to actual situations.

According to some embodiments of the present application, there is also provided a blood pumping apparatus comprising the blood pumping device 100 provided in any of the above embodiments.

It is to be understood that the blood pumping device includes the blood pumping transmission device 100 provided in the embodiment of the present application, and specific details of the blood pumping transmission device 100 may be referred to the description of the corresponding parts in the blood pumping transmission device 100 described in the embodiment of the present application, and for brevity, will not be described again.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not depart from the spirit of the embodiments of the present application, and they should be construed as being included in the scope of the claims and description of the present application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. A blood pumping transmission device, comprising:

the shell is internally provided with a cavity;

the transmission assembly comprises a rotating shaft penetrating through the cavity and a bearing sleeved on the rotating shaft, and the bearing is arranged in the cavity;

the separation assembly is arranged in the cavity and sleeved on the rotating shaft, and is used for reducing the flow cross-sectional area of liquid in the cavity.

2. The blood-pumping transmission device according to claim 1, wherein the housing is provided with a liquid discharge port, and the blocking member is located on a proximal end side of the liquid discharge port in an axial direction of the cavity.

3. The pump-blood transmission device according to claim 1, wherein the blocking member is in interference fit with an inner wall of the cavity, and the blocking member is in clearance fit with the shaft.

4. The pump blood transmission device according to claim 1, wherein the cavity comprises a perfusion cavity and a reflux cavity which are communicated with each other, the perfusion cavity is positioned at the proximal end side of the reflux cavity, and the bearing is arranged in the perfusion cavity.

5. The blood pumping transmission of claim 4, wherein the blocking assembly comprises a first blocking member disposed between the perfusion lumen and the flashback lumen.

6. The blood pumping transmission device of claim 5, wherein the first blocking member is provided with a through hole.

7. The pump blood transmission device according to claim 4, wherein the perfusion chamber includes an inflow chamber and a bearing chamber communicating with each other, the inflow chamber being located at a proximal side of the bearing chamber, the bearing being located within the bearing chamber.

8. The pump blood transmission of claim 7, wherein the blocking assembly includes a second blocking member disposed between the inflow cavity and the bearing cavity.

9. The blood pumping transmission device of claim 8, wherein the second blocking member is provided with an aperture.

10. A blood pumping apparatus comprising a blood pumping transmission device according to any one of claims 1 to 9.

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