阅读说明：本技术 微型血泵的连接结构及微型血泵 (Connection structure of miniature blood pump and miniature blood pump ) 是由 颜世平 李维 代威 冯剑锋 彭伟 龙燕萍 于 2021-03-22 设计创作，主要内容包括：本发明提供了一种微型血泵的连接结构,其包括第一主体及第二主体,第一主体包括第一主体外壳及第一主体盖；第二主体包括第二主体外壳及第二主体盖；第一主体盖包括第一盖体及开设于第一盖体上的通孔、滑槽和定位卡槽,通孔贯穿第一盖体设置,滑槽设置于通孔边侧并与通孔相互连通,定位卡槽与滑槽沿周向错位设置,第二主体盖包括第二盖体及开设于第二盖体上的卡扣,卡扣与滑槽相匹配,第一主体与第二主体能相对旋转,将卡扣卡设于定位卡槽中。本发明还提供了一种微型血泵,其包括上述微型血泵的连接结构。与现有技术相比,本发明提供的微型血泵的连接结构及微型血泵实现了部件之间的可拆卸连接,让拆装更加的便捷。(The invention provides a connecting structure of a miniature blood pump, which comprises a first main body and a second main body, wherein the first main body comprises a first main body shell and a first main body cover; the second body comprises a second body shell and a second body cover; the first main body cover comprises a first cover body, a through hole, a sliding groove and a positioning clamping groove, the through hole is formed in the first cover body in a penetrating mode, the sliding groove is formed in the side of the through hole and communicated with the through hole, the positioning clamping groove and the sliding groove are arranged in a staggered mode along the circumferential direction, the second main body cover comprises a second cover body and a buckle, the buckle is arranged on the second cover body, the buckle is matched with the sliding groove, the first main body and the second main body can rotate relatively, and the buckle is clamped in the positioning clamping groove. The invention also provides a micro blood pump which comprises the connecting structure of the micro blood pump. Compared with the prior art, the connection structure of the micro blood pump and the micro blood pump provided by the invention realize detachable connection of parts, so that the disassembly and the assembly are more convenient.)

1. A connection structure of a micro blood pump, comprising:

the first main body comprises a first main body shell and a first main body cover fixed at one end of the first main body shell;

the second main body comprises a second main body shell and a second main body cover fixed at one end of the second main body shell;

wherein, first main part lid includes first lid and offers in through-hole, spout and positioning channel groove on the first lid, the through-hole runs through first lid sets up, the spout set up in the through-hole avris and with the through-hole communicates each other, positioning channel groove with the spout is along circumference dislocation set, second main part lid includes the second lid and offers in buckle on the second lid, the buckle with the spout phase-match, just first main part with second main part ability relative rotation is, will the buckle card is located in the positioning channel groove or will the buckle is followed deviate from in the positioning channel groove.

2. The connection structure of a miniature blood pump according to claim 1, wherein one side of the first cover body away from the second main body cover is an elastic mounting portion, the elastic mounting portion comprises a spiral mounting surface away from one side of the second main body cover, the positioning clamping groove is arranged at a lower position of the spiral mounting surface, the sliding groove is positioned at a higher position of the spiral mounting surface, and one side of the spiral mounting surface close to the sliding groove is in interference fit with the buckle.

3. The connection structure of a miniature blood pump according to claim 2, wherein said first body cap further comprises:

and the positioning stop block is arranged on the elastic mounting part and surrounds the positioning clamping groove together with the spiral mounting surface.

4. The connection structure of a micro blood pump according to claim 3, wherein the second cover body comprises:

a body;

the extension body extends towards the first main part direction from the body and forms, and can insert in the through-hole, the buckle set up in on the side of extension body.

5. The connection structure of a miniature blood pump according to claim 4, wherein the extension body is recessed on the side surface thereof to form a ring groove, and the connection structure of a miniature blood pump further comprises:

and the sealing ring is arranged in the annular groove and is in interference fit with the inner wall of the through hole.

6. The connection structure of a miniature blood pump according to claim 4 or 5, wherein there are two of said sliding groove, said positioning slot, said positioning stop and said fastener, two of said fasteners are disposed opposite to each other at an interval, and each of said fasteners is correspondingly disposed with one of said sliding groove, one of said positioning slot and one of said positioning stop.

7. A miniature blood pump, comprising:

a connection structure of a micro blood pump as claimed in any one of claims 1 to 6;

a backflow cavity disposed in the second body housing;

the driving mechanism is fixed in the first main body shell;

and the driven mechanism is fixed in the second main body shell, can be connected with the output end of the driving mechanism and can rotate along with the output end of the driving mechanism so as to drive the liquid in the backflow cavity to flow.

8. The miniature blood pump of claim 7, wherein said active mechanism comprises:

a driving motor fixed in the first body case;

and the first connecting head is fixed on the output shaft of the driving motor and is used for being connected with the driven mechanism.

9. The miniature blood pump of claim 8, wherein said follower mechanism comprises:

a rotating shaft;

the second connector is fixed at one end of the rotating shaft and matched with the first connector;

the flexible shaft is fixed at the other end of the rotating shaft;

the sheath is sleeved on the flexible shaft.

10. The miniature blood pump of claim 9, wherein said first connector and said second connector are keyed.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a connection structure of a micro blood pump and the micro blood pump.

Background

In the treatment of high-risk percutaneous coronary surgery (HRPCI) and Cardiogenic Shock (Cardiogenic Shock), it is a common treatment to use an auxiliary device to draw blood from the left ventricle to the aorta. At present, an auxiliary device for providing power is commonly used for a micro blood pump, the micro blood pump generally is a percutaneous intervention human body, an axial flow vane pump or a mixed flow vane pump reaching an action position through a blood vessel pipeline is generally placed in a catheter, and the micro blood pump can effectively provide power to promote blood to flow.

In the micro blood pump in the prior art, a rotating shaft is usually driven to rotate by a motor, so as to provide power for the flow of blood. However, the micro blood pump in the prior art is of an integral structure, and the micro blood pump is not convenient to disassemble and assemble, so that the assembly and the use of the micro blood pump are influenced.

Disclosure of Invention

The miniature blood pump assembling and disassembling device aims at the technical problems that the miniature blood pump in the prior art is not convenient and fast enough and the assembling and the using of the miniature blood pump are influenced. The invention provides a connection structure of a miniature blood pump, which can realize quick assembly and disassembly of the miniature blood pump.

A connection structure of a micro blood pump, comprising:

the first main body comprises a first main body shell and a first main body cover fixed at one end of the first main body shell;

the second main body comprises a second main body shell and a second main body cover fixed at one end of the second main body shell;

wherein, first main part lid includes first lid and offers in through-hole, spout and positioning channel groove on the first lid, the through-hole runs through first lid sets up, the spout set up in the through-hole avris and with the through-hole communicates each other, positioning channel groove with the spout is along circumference dislocation set, second main part lid includes the second lid and offers in buckle on the second lid, the buckle with the spout phase-match, just first main part with second main part ability relative rotation is, will the buckle card is located in the positioning channel groove or will the buckle is followed deviate from in the positioning channel groove.

Preferably, one side that first lid was kept away from second main part lid is elastic mounting portion, elastic mounting portion is including keeping away from the spiral installation face of second main part lid one side, positioning slot sets up in the low level department of spiral installation face, the spout is located the high level department of spiral installation face, just spiral installation face is close to one side of spout with the buckle is interference fit.

Preferably, the first body cover further includes:

and the positioning stop block is arranged on the elastic mounting part and surrounds the positioning clamping groove together with the spiral mounting surface.

Preferably, the second cover includes:

a body;

the extension body extends towards the first main part direction from the body and forms, and can insert in the through-hole, the buckle set up in on the side of extension body.

Preferably, a ring groove is concavely formed on the side surface of the extension body, and the connection structure of the miniature blood pump further comprises:

and the sealing ring is arranged in the annular groove and is in interference fit with the inner wall of the through hole.

Preferably, the sliding groove, the positioning clamping groove, the positioning stop block and the buckle are provided with two parts, the two parts are arranged at intervals and are opposite to each other, and each buckle is correspondingly provided with one sliding groove, one positioning clamping groove and one positioning stop block.

A miniature blood pump, comprising:

a connection structure of a micro blood pump as described in any one of the above;

a backflow cavity disposed in the second body housing;

the driving mechanism is fixed in the first main body shell;

and the driven mechanism is fixed in the second main body shell, can be connected with the output end of the driving mechanism and can rotate along with the output end of the driving mechanism so as to drive the liquid in the backflow cavity to flow.

Preferably, the active mechanism comprises:

a driving motor fixed in the first body case;

and the first connecting head is fixed on the output shaft of the driving motor and is used for being connected with the driven mechanism.

Preferably, the driven mechanism includes:

a rotating shaft;

the second connector is fixed at one end of the rotating shaft and matched with the first connector;

the flexible shaft is fixed at the other end of the rotating shaft;

the sheath is sleeved on the flexible shaft.

Preferably, the first connector and the second connector are in a key connection structure.

Compared with the prior art, the connection structure of the miniature blood pump provided by the invention is characterized in that the first main body cover and the second main body cover are arranged, the first main body cover comprises a first cover body, a through hole, a sliding groove and a positioning clamping groove, the through hole is formed in the first cover body in a penetrating mode, the sliding groove is formed in the side edge of the through hole and communicated with the through hole, the positioning clamping groove and the sliding groove are arranged in a staggered mode along the circumferential direction, the second main body cover comprises a second cover body and a buckle arranged on the second cover body, the buckle is matched with the sliding groove, the first main body and the second main body can rotate relatively, and the buckle is clamped in the positioning clamping groove or is separated from the positioning clamping groove. Thereby can realize through rotatory mode first main part with quick installation between the second main part is fixed, has realized first main part with can dismantle between the second main part is connected for more convenient and fast of dismouting can improve packaging efficiency, also can ensure miniature blood pump's result of use simultaneously.

Correspondingly, the miniature blood pump provided by the invention adopts the connection structure of the miniature blood pump, so that the miniature blood pump is more convenient to disassemble and assemble, the driving mechanism is convenient to replace, the driving mechanism can be recycled, and the use effect of the miniature blood pump is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a micro blood pump according to an embodiment;

FIG. 2 is a schematic structural view of the miniature blood pump shown in FIG. 1 after the first body and the second body are disassembled;

FIG. 3 is a schematic structural view of the first body cover shown in FIG. 1;

FIG. 4 is a schematic structural view of the second body cover shown in FIG. 1;

FIG. 5 is a schematic view of the miniature blood pump of FIG. 1 in an assembled state;

fig. 6 is a schematic structural view of another assembled state of the micro blood pump shown in fig. 1.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The invention provides a connecting structure of a miniature blood pump, which comprises a first main body and a second main body, wherein the first main body comprises a first main body shell and a first main body cover fixed at one end of the first main body shell; the second main body comprises a second main body shell and a second main body cover fixed at one end of the second main body shell; first main part lid includes first lid and offers in through-hole, spout and positioning channel groove on the first lid, the through-hole runs through first lid sets up, the spout set up in the through-hole avris and with the through-hole communicates each other, positioning channel groove with the spout is along circumference dislocation set, second main part lid includes the second lid and offers in buckle on the second lid, the buckle with the spout phase-match, just first main part with second main part ability relative rotation will the buckle card is located in positioning channel groove or will the buckle is followed deviate from in the positioning channel groove. The connection structure of the miniature blood pump realizes detachable connection between components, so that the disassembly and the assembly are more convenient, the assembly efficiency can be effectively improved, and the use effect can be ensured.

Please refer to fig. 1 to fig. 6. The present embodiment provides a connection structure 10 of a micro blood pump, which includes a first body 11 and a second body 12, wherein the first body 11 includes a first body housing 111 and a first body cover 112 fixed at one end of the first body housing 111, and the second body 12 includes a second body housing 121 and a second body cover 122 fixed at one end of the second body housing 121. The second body cover 122 is detachably connected with the first body cover 112, so that the second body 12 is detachably connected with the first body 11, the disassembly and the installation of a user on the miniature blood pump are facilitated, meanwhile, due to the adoption of a detachable connection structure, more convenience is brought to the replacement or the maintenance of internal parts, the miniature blood pump can be repeatedly utilized, and the using effect of the miniature blood pump is ensured.

The first main body cover 112 includes a first cover body 1121, and a through hole 1122, a sliding slot 1123 and a positioning slot 1124 formed in the first cover body 1121, wherein the through hole 1122 penetrates through the first cover body 1121, the sliding slot 1123 is formed at the side of the through hole 1122 and is communicated with the through hole 1122, the positioning slot 1124 and the sliding slot 1123 are circumferentially disposed in a staggered manner, and the positioning slot 1124 is located at a side away from the second main body 12. The second body cover 122 includes a second cover 1221 and a latch 1222 opened on the second cover 1221, and the latch 1222 is matched with the sliding slot 1123. Wherein, the matching of the buckle 1222 and the chute 1123 is specifically as follows: the size of the buckle 1222 is not larger than the size of the sliding slot 1123, so that the buckle 1222 can smoothly pass through the sliding slot 1123 and enter the position of the positioning slot 1124. The first body 11 and the second body 12 can rotate relatively to each other, so as to clamp the buckle 1222 in the positioning slot 1124 or to release the buckle 1222 from the positioning slot 1124. Namely, through the cooperation between the buckle 1222 and the positioning clamp groove 1124, the first body 11 and the second body 12 can be quickly mounted and fixed in a rotating manner, so that the first body 11 and the second body 12 can be detachably connected, the assembly and disassembly are more convenient and quick, the assembly efficiency can be improved, and meanwhile, due to the adoption of the detachable connection structure, when the assembly component in the middle of the first body 11 or the second body 12 needs to be replaced or maintained, the replacement and maintenance of the components can be facilitated, and the use effect of the assembled micro blood pump is ensured.

Preferably, the side of the first cover 1121 away from the second body cover 1221 is an elastic mounting portion 1125, that is, the side of the first cover 1121 away from the second body cover 1221 is made of an elastic material. The elastic mounting portion 1125 includes a spiral mounting surface 1126 on a side far from the second body cover 1221, that is, the surface of the elastic mounting portion 1125 on the side far from the second body cover 1221 has a height difference. The positioning clamping groove 1124 is arranged at a low position of the spiral mounting surface 1126, the sliding groove 1123 is arranged at a high position of the spiral mounting surface 1126, and one side of the spiral mounting surface 1126 close to the sliding groove 1123 is in interference fit with the buckle 1222. That is, the side of the spiral mounting surface 1126 near the positioning slot 1124 is closer to the second body 12 in the axial direction, and the side of the spiral mounting surface 1126 near the sliding slot 1123 is further away from the second body 12 in the axial direction, so that after the buckle 1222 slides into the positioning slot 1124, the elastic mounting portion 1125 near the sliding slot 1123 blocks the buckle 1222, thereby effectively preventing the buckle 1222 from accidentally slipping off, and ensuring the connection reliability between the first body 11 and the second body 12. When the first body 11 and the second body 12 are mounted, the buckle 1222 is aligned with the sliding slot 1123, the first body 11 and the second body 12 are inserted into each other in the axial direction, so that the buckle 1222 penetrates the sliding slot 1123, and after the first body 11 and the second body 12 are inserted into place, the buckle 1222 is slid into and clamped in the positioning clamping slot 1124 by rotating the first body 11 and the second body 12 relatively. It can be understood that, since the side of the first cover 1121 remote from the second cover 1121 is the elastic mounting portion 1125, i.e., made of an elastic material, and the side of the spiral mounting surface 1126 near the chute 1123 is in interference fit with the buckle 1222. Therefore, when the first body 11 and the second body 12 are rotated, the elastic mounting portion 1125 needs to be deformed by a certain force, and the buckle 1222 can slide into the positioning slot 1124 after overcoming the resistance of the elastic mounting portion 1125. Meanwhile, after the buckle 1222 slides into the positioning slot 1124, the elastic mounting portion 1125 is no longer stressed to restore itself, so that the buckle 1222 is clamped in the positioning slot 1124, thereby effectively avoiding the accidental slipping of the buckle 1222 and ensuring the connection reliability between the first main body 11 and the second main body 12. Similarly, when the first body 11 and the second body 12 need to be detached, the elastic mounting portion 1125 can be deformed by rotating the first body 11 and the second body 12 in opposite directions, so that the buckle 1222 can smoothly slide into the sliding groove 1123 by applying force, and then the first body 11 and the second body 12 can be pulled away.

Specifically, in this embodiment, the elastic mounting portion 1125 is a plastic sheet with a spiral angle, so that the structure is simple and the production cost can be effectively reduced. Of course, in other embodiments, the elastic mounting portion 1125 can be made of any desired elastic material, that is, the elastic mounting portion 1125 only needs to deform after being applied with an external force, so that the latch 1222 can smoothly overcome the resistance to pass through, and in a state of not being applied with an external force, the latch 1222 can be blocked, and the latch 1222 can be prevented from accidentally slipping off.

Preferably, the first body cover 122 further includes a positioning stopper 1127, the positioning stopper 1127 is disposed on the elastic mounting portion 1125, and the positioning stopper 1127 and the spiral mounting surface 1126 together enclose the positioning slot 1124. When the first body 11 and the second body 12 are rotatably mounted, the positioning stopper 1127 can block the buckle 1222, so as to provide a feedback prompt for a user during mounting, and prompt the user to rotate to a proper position.

Preferably, the second cover 1221 includes a body 1223 and an extension body 1224 extending from the body 1223 toward the first body 11, the extension body 1224 is insertable into the through hole 1122, and the latch 1222 is opened on a side surface of the extension body 1224. That is, the extension body 1224 is no larger than the through-hole 1122, or the extension body 1224 is made of an elastic material. So that the sealing and installation effect can be better ensured by the body 1223 and the extension 1224 cooperating with the first body 11 after the first body 11 and the second body 12 are installed.

Preferably, the extension body 1224 is recessed on the side to form an annular groove 1125. Connection structure 10 of miniature blood pump still includes sealing washer 13, sealing washer 13 install in annular 1125, just sealing washer 13 with the inner wall of through-hole 1122 is interference fit. Therefore, after the first body 11 and the second body 12 are mounted, the first body 11 and the second body 12 can be prevented from accidentally slipping off by the blocking between the elastic mounting portion 1125 and the clip 1222, and the frictional resistance between the sealing ring 13 and the inner wall of the through hole 1122, so that the connection reliability between the first body 11 and the second body 12 is further ensured. Specifically, the seal ring 13 is an O-ring.

Preferably, two sliding grooves 1123, two positioning grooves 1124, two positioning stoppers 1127 and two fasteners 1222 are arranged, the two fasteners 1222 are arranged opposite to each other at intervals, and each fastener 1222 is correspondingly provided with one sliding groove 1123, one positioning groove 1124 and one positioning stopper 1127. It can be understood that, by arranging the two spaced and opposite buckles 1222 to be matched with the two positioning slots 1124, the stress of the first body 11 and the second body 12 after being installed can be more balanced, and the reliability and stability of the connection can be ensured.

In this embodiment, the first body 11 is specifically a handle, and the second body 12 is specifically a handle head. Of course, in other embodiments, the first body 11 may also be a handle head, and the second body 12 may also be a handle. That is, the first body cover 112 may be disposed on the handle or the handle head, and correspondingly, the second body cover 122 may be disposed on the handle head or the handle. The first main body cover 112 and the second main body cover 122 can be detachably connected only by being arranged between the handle and the handle head.

Meanwhile, the present embodiment further provides a miniature blood pump 100, which includes the connection structure 10 of the miniature blood pump, a backflow cavity 20, a driving mechanism 30 and a driven mechanism 40, wherein the backflow cavity 20 is disposed in the second main body housing 121, the driving mechanism 30 is fixed in the first main body housing 111, and the driven mechanism 40 is fixed in the second main body housing 121. The driven mechanism 40 can be connected with the output end of the driving mechanism 30 and can rotate along with the output end of the driving mechanism 30 to drive the liquid in the reflux cavity 20 to flow. Because the first main body 11 is detachably connected with the second main body 12, the driving mechanism 30 can be reused, which is beneficial to reducing cost, so that the driving mechanism 30 can be maintained and replaced in time when needing maintenance, and the use effect of the miniature blood pump 100 is ensured.

Preferably, the driving mechanism 30 includes a driving motor 31 and a first connector 32, the driving motor 31 is fixed in the first main body housing 111, and the first connector 32 is fixed on an output shaft of the driving motor 31 for connecting with the driven mechanism. In this embodiment, the micro blood pump 100 adopts an external motor, and the structural mode of the external motor has a larger torque, thereby effectively ensuring the use effect of the micro blood pump 100.

Preferably, the driven mechanism 40 includes a rotating shaft 41, a second connector 42, a flexible shaft 43 and a sheath 44, the second connector 42 is fixed at one end of the rotating shaft 41 and is matched with the first connector 32, the flexible shaft 43 is fixed at the other end of the rotating shaft 41, and the sheath 44 is sleeved on the flexible shaft 43. Therefore, after the second connector 42 is connected with the first connector 41, the driving motor 31 can drive the rotating shaft 41 and the flexible shaft 43 to rotate.

Preferably, the first connector 32 and the second connector 42 are in a key connection structure. Therefore, the transmission is realized in a key connection mode, the transmission stability can be effectively guaranteed, and the use effect of the miniature blood pump 100 is ensured. Specifically, in this embodiment, the second connector 42 is a key connection female connector, the first connector 32 is a key connection male connector, a mounting groove 421 is provided in the second connector 42, and the first connector 32 can be correspondingly inserted into the mounting groove 421. Be provided with a plurality of keyways 4211 that are the annular array and distribute in the mounting groove 421, first connector 32 surface is provided with a plurality of connecting key 321 that are the annular array and distribute, connecting key 321 corresponds keyway 4211 sets up, thereby it is through a plurality of connecting key 321 with keyway 4211's cooperation can effectively carry out the transmission, has ensured driven stability, has ensured miniature blood pump 100's result of use. Therefore, through the key connection structure between the connection structure 10 of the micro blood pump and the first connection head 32 and the second connection head 42, the quick connection between the first body 11 and the second body 12 can be realized, and the transmission effect is ensured.

Preferably, the miniature blood pump 100 further comprises a sealing structure 50, the sealing structure 50 comprises a sealing cover 51, a sealing member 52 and a sealing cavity 53, the sealing cover 51 and the sealing member 52 are respectively mounted on the second body casing 121 and sleeved on the rotating shaft 41, the sealing cover 51 and the sealing member 52 are spaced from each other to form the sealing cavity 53, and the sealing cavity 53 is filled with a sealing material. In particular, the sealing material is a paste, such as grease. The seal 52 is an elastomeric material having a pre-tensioning capability. The rotation between the rotating shaft 41 and the sealing member 52 and the rotation between the rotating shaft 41 and the sealing cover 51 are both provided, and the liquid in the return chamber 20 is blocked by the paste in the sealing chamber 53, so that the liquid does not pass through the paste, and the liquid cannot leak to the side of the driving motor 31 through the gap between the sealing member 52 and the rotating shaft 41. Since the clearance between the rotary shaft 41 and the seal member 52 is small and the clearance between the seal cover 51 and the rotary shaft 41 is small, the paste hardly leaks and runs off in the seal cavity 53, and thus the dynamic seal can be maintained for a long time until the paste runs off to a certain extent, thereby effectively ensuring the sealing performance of the micro blood pump 100.

Preferably, the miniature blood pump 100 further comprises a bearing 60 disposed between the second body housing 121 and the rotating shaft 41.

Preferably, the micro blood pump 100 further includes a handle cable interface 70 disposed on the first body 11, so that the connection between an external circuit and the driving motor 31 can be realized through the handle cable interface 70.

Compared with the prior art, the connection structure of the miniature blood pump provided by the invention is characterized in that the first main body cover and the second main body cover are arranged, the first main body cover comprises a first cover body, a through hole, a sliding groove and a positioning clamping groove, the through hole is formed in the first cover body in a penetrating mode, the sliding groove is formed in the side edge of the through hole and communicated with the through hole, the positioning clamping groove and the sliding groove are arranged in a staggered mode along the circumferential direction, the second main body cover comprises a second cover body and a buckle arranged on the second cover body, the buckle is matched with the sliding groove, and the first main body and the second main body can rotate relatively to clamp the buckle in the positioning clamping groove. Thereby can realize through rotatory mode first main part with quick installation between the second main part is fixed, has realized first main part with can dismantle between the second main part is connected for more convenient and fast of dismouting can improve packaging efficiency, also can ensure miniature blood pump's result of use simultaneously.

Correspondingly, the miniature blood pump provided by the invention adopts the connection structure of the miniature blood pump, so that the miniature blood pump is more convenient to disassemble and assemble, the driving mechanism is convenient to replace, the driving mechanism can be recycled, and the use effect of the miniature blood pump is further ensured.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.