Motor, coil, and ventricular assist device

Abstract

The utility model provides a motor, a coil and a ventricle auxiliary device, the motor comprises a casing and the coil, the casing forms an accommodating cavity and a via hole communicated with the accommodating cavity, the coil comprises a coil main body and a plurality of connecting taps electrically connected with the coil main body, the coil main body is located in the accommodating cavity, and the connecting taps are electrically connected with the coil main body. At least part of the connecting taps are gathered together in the containing cavity to form a tap cluster, at least part of the connecting taps extend to the outside of the machine shell through the same via hole and are used for being electrically connected with a driving cable, on one hand, the overall structural strength of all the connecting taps in the tap cluster can be improved, and the risk that the part of the connecting taps are broken in the assembling process is reduced; and meanwhile, the overall tensile strength of each connecting tap in the tap cluster after being connected with the driving cable is improved, the connection reliability of the connecting taps and the driving cable is improved, and on the other hand, the number of via holes formed in the machine shell is reduced, the machining difficulty of the machine shell is reduced, and the production efficiency of the motor is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of drive equipment, and in particular relates to a motor, a coil, and a ventricular assist device. Background Art

[0002] The blood pumping motor can be used in a ventricular assist device, which can be electrically connected to the drive cable in the ventricular assist device. At the same time, an impeller can be provided on the rotor of the blood pumping motor. When the blood pumping catheter is inserted into the human body, the rotor of the blood pumping motor can drive the impeller to rotate under the drive of the drive cable, so that blood from one part of the human body flows into the blood pumping catheter and then flows to another part of the human body through the blood pumping catheter.

[0003] Currently, such motors consist of a housing, a rotor, and coils disposed within the housing. Multiple connecting taps from the coils extend through the housing and are electrically connected to drive cables. However, the structural strength of each connecting tap is relatively low, which can easily lead to breakage during assembly and affect the reliability of the connection between the connecting tap and the drive cable. Utility Model Content

[0004] The embodiments of the present application provide a motor, a coil, and a ventricular assist device, which can improve the structural strength of the connection tap and the production efficiency of the motor.

[0005] In a first aspect, an embodiment of the present application provides a motor, comprising a housing and a coil, wherein the housing is formed with a accommodating cavity and a via connected to the accommodating cavity; the coil comprises a coil body and a plurality of connection taps electrically connected to the coil body respectively, the coil body is located in the accommodating cavity, at least some of the connection taps are gathered in the accommodating cavity to form a tap cluster, and at least some of the connection taps extend outside the housing through the via and are used to be electrically connected to the drive cable.

[0006] In some embodiments, the motor also includes a rotor, at least part of which is disposed in the casing; the connection parts between each connection tap in the tap cluster and the coil body are distributed at intervals along the circumference of the rotor; or, the connection parts between each connection tap in the tap cluster and the coil body are distributed adjacently along the circumference of the rotor; or, in the tap cluster, the connection parts between some connection taps and the coil body are distributed at intervals along the circumference of the rotor, and the connection parts between some connection taps and the coil body are distributed adjacently along the circumference of the rotor.

[0007] In some embodiments, the tap cluster includes a first tap, the first tap includes a first connection portion, the first connection portion is electrically connected to the coil body, and extends from the accommodating cavity to the outside of the casing through a via; and / or, the tap cluster includes a second tap, the second tap includes a first connection portion and a second connection portion, the first connection portion extends from the accommodating cavity to the outside of the casing through a via, and the second connection portion is electrically connected to the coil body and the first connection portion, respectively.

[0008] In some embodiments, the tap cluster includes a first tap and at least two second taps, the second connection portion of each second tap is bent and extends toward the first tap, and the first connection portion of each second tap is bent relative to the corresponding second connection portion, so that the first connection portion of the first tap and the first connection portion of each second tap are gathered together.

[0009] In some embodiments, the second connecting portion is attached to the end surface of the coil body and bends and extends within the end surface of the coil body toward the first tap.

[0010] In some embodiments, the motor further includes a rotor, at least a portion of which is disposed within the housing; each first connection portion is distributed radially or circumferentially along the rotor; or, each first connection portion forms at least two connection groups, and each connection group is distributed radially along the rotor.

[0011] In some embodiments, each connection tap in the tap cluster extends to the outside of the housing through a same via hole, and each connection tap in the tap cluster is relatively fixed and insulated from each other.

[0012] In some embodiments, the connection tap includes a conductor and an insulating layer covering the outer periphery of the conductor, and at least a portion of the insulating layer of each connection tap in the tap cluster is melt-bonded to form an integrated structure.

[0013] In a second aspect, an embodiment of the present application further provides a coil comprising a coil body and a plurality of connection taps, at least some of which are gathered to form a tap cluster, and each connection tap in the tap cluster is used to extend from the accommodating cavity of the motor through a via hole to the outside of the motor casing.

[0014] In a third aspect, an embodiment of the present application also provides a ventricular assist device comprising the above motor.

[0015] An embodiment of the present application provides a motor, a coil and a ventricular assist device, wherein the motor includes a housing and a coil, the housing is formed with a accommodating cavity and a via connected to the accommodating cavity, the coil includes a coil body and a plurality of connection taps electrically connected to the coil body respectively, the coil body is located in the accommodating cavity, at least some of the connection taps are gathered in the accommodating cavity to form a tap cluster, at least some of the connection taps extend to the outside of the housing through the same via for electrical connection to the drive cable, on the one hand, the overall structural strength of each connection tap in the tap cluster can be improved, and the risk of breakage of these connection taps during assembly can be reduced, and the overall tensile strength of each connection tap in the tap cluster after being connected to the drive cable can be improved, and the connection reliability of these connection taps and the drive cable can be improved, and on the other hand, it is also beneficial to reduce the number of vias formed in the housing, reduce the processing difficulty of the housing, and improve the production efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A cross-sectional view of a motor is provided for some embodiments of the present application;

[0018] Figure 2 is a schematic structural diagram of a coil provided in some embodiments of the present application;

[0019] Figure 3 is another structural schematic diagram of a coil provided in some embodiments of the present application;

[0020] Figure 4 is a top view of coils provided in other embodiments of the present application;

[0021] Figure 5 is a top view of coils provided in some other embodiments of the present application;

[0022] Figure 6 1 is a top view of a coil provided in some further embodiments of the present application.

[0023] Tag Name:

[0024] housing 10 ; accommodating chamber 11 ; coil 20 ; coil body 21 ; connection tap 22 ; first connection portion 221 ; second connection portion 222 ; first tap 223 ; second tap 224 ; drive cable 30 ; rotor 40 . DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0027] To solve the problems of the prior art, the present invention provides a motor that can be used in medical device-related applications. Of course, the motor can also be used in other application scenarios, which are not limited by the present invention.

[0028] Figure 1 A cross-sectional view of a motor is provided for some embodiments of the present application. Figure 2 This is a schematic diagram of the structure of the coil provided in some embodiments of the present application.

[0029] See also Figure 1 and Figure 2 In the first aspect, an embodiment of the present application provides a motor, including a housing 10 and a coil 20, wherein the housing 10 is formed with a housing cavity 11 and a via connected to the housing cavity 11; the coil 20 includes a coil body 21 and a plurality of connection taps 22 electrically connected to the coil body 21 respectively, the coil body 21 is located in the housing cavity 11, at least some of the connection taps 22 are gathered in the housing cavity 11 to form a tap cluster, and at least some of the connection taps 22 extend to the outside of the housing 10 through the via and are used to be electrically connected to the drive cable 30.

[0030] It should be noted that, in the above-mentioned “at least part of the connecting taps 22 extends to the outside of the housing 10 through the vias”, “at least part of the connecting taps 22” may include at least part of the connecting taps 22 in the tap cluster, and may also include other connecting taps 22 in the coil 20 except the connecting taps 22 in the tap cluster.

[0031] It should be noted that the motor of the embodiment of the present application can be applied to a ventricular assist device as a blood pumping motor for driving an impeller. Alternatively, the motor of the embodiment of the present application can also be applied to other fields, which is not limited by the present embodiment.

[0032] The housing 10 is used to protect the coil 20 and other components located therein. A receiving cavity 11 may be formed inside the housing 10 . Furthermore, a via hole may be formed in the housing 10 , one end of the via hole being connected to the receiving cavity 11 and the other end being connected to the external environment of the housing 10 .

[0033] The coil 20 is used to convert energy, generate a magnetic field, and realize motor operation. Specifically, the coil 20 may include a coil body 21 and a plurality of connection taps 22. The coil body 21 is located in the accommodating cavity 11. When each connection tap 22 is connected to the coil body 21, a portion of each connection tap 22 can be located in the accommodating cavity 11, while the other portion can extend outside the housing 10 and be electrically connected to the drive cable 30.

[0034] At least some of the connection taps 22 are gathered in the accommodating cavity 11 to form a tap cluster. Specifically, the connection taps 22 in the tap cluster can be arranged close to each other, in which case there can be a gap between two adjacent connection taps 22 in the tap cluster. Alternatively, the connection taps 22 in the tap cluster can be closed to form a whole, in which case the two adjacent connection taps 22 in the tap cluster are in contact with each other. By gathering at least some of the connection taps 22 in the accommodating cavity 11, the overall structural strength of at least some of the connection taps 22 can be improved. In addition, the distances between the connection taps 22 in the tap cluster are close, and they can extend to the outside of the housing 10 through the same via hole. Therefore, during the processing of the housing 10, there is no need to open a large number of via holes on the housing 10, which can reduce the number of via holes opened on the housing 10 and reduce the processing difficulty of the housing 10.

[0035] It can be understood that at least part of the connection taps 22 being gathered in the accommodating cavity 11 can mean that all the connection taps 22 are gathered in the accommodating cavity 11. In this case, only one via hole can be formed on the housing 10. After all the connection taps 22 are gathered in the accommodating cavity 11, they can be extended to the outside of the housing 10 through the via hole to be electrically connected to the drive cable 30. Alternatively, at least part of the connection taps 22 being gathered in the accommodating cavity 11 can mean that part of the connection taps 22 are gathered in the accommodating cavity 11. In this case, multiple via holes can be formed on the housing 10. After the connection taps 22 are gathered, they extend to the outside of the housing 10 through one of the via holes, and the remaining connection taps 22 can be extended to the outside of the housing 10 one by one through the remaining via holes, so that all the connection taps 22 can be electrically connected to the drive cable 30.

[0036] An embodiment of the present application provides a motor, including a housing 10 and a coil 20. The housing 10 is formed with a accommodating cavity 11 and a via connected to the accommodating cavity 11. The coil 20 includes a coil body 21 and a plurality of connection taps 22 electrically connected to the coil body 21 respectively. The coil body 21 is located in the accommodating cavity 11. At least some of the connection taps 22 are gathered in the accommodating cavity 11 to form a tap cluster. At least some of the connection taps 22 extend to the outside of the housing 10 through the same via for electrical connection to a drive cable 30. On the one hand, the overall structural strength of each connection tap 22 in the tap cluster can be improved, and the risk of breakage of these connection taps 22 during assembly can be reduced. At the same time, the overall tensile strength of each connection tap 22 in the tap cluster after being connected to the drive cable 30 can be improved, and the connection reliability of these connection taps 22 and the drive cable 30 can be improved. On the other hand, it is also beneficial to reduce the number of vias formed in the housing 10, reduce the processing difficulty of the housing 10, and improve the production efficiency of the motor.

[0037] Optionally, in the coil 20, each connecting tap 22 can be insulated from each other, and each connecting tap 22 can include a U-phase tap, a V-phase tap and a W-phase tap, wherein the U-phase tap is electrically connected to the U-phase drive line in the drive cable 30, the V-phase tap is electrically connected to the V-phase drive line in the drive cable 30, and the W-phase tap is electrically connected to the W-phase drive line in the drive cable 30, thereby reducing electromagnetic interference within the motor.

[0038] Please continue reading Figure 1 and Figure 2 In some embodiments, the motor further includes a rotor 40, at least a portion of which is disposed within the housing 10; the connection portions between the connection taps 22 in the tap cluster and the coil body 21 are spaced apart along the circumference of the rotor 40; or, the connection portions between the connection taps 22 in the tap cluster and the coil body 21 are adjacently distributed along the circumference of the rotor 40; or, in the tap cluster, the connection portions between some of the connection taps 22 and the coil body 21 are spaced apart along the circumference of the rotor 40, and the connection portions between some of the connection taps 22 and the coil body 21 are adjacently distributed along the circumference of the rotor 40.

[0039] Specifically, at least part of the rotor 40 is disposed in the housing 10, and is rotatably disposed relative to the housing 10 and the coil 20, wherein the coil 20 can be disposed around the circumference of the rotor 40 and located between the housing 10 and the rotor 40, and the coil body 21 of the coil 20 can be connected to the control device through the connection tap 22 and the drive cable 30. Under the control of the control device, the coil body 21 can generate a magnetic field, and the magnetic field acts on the rotor 40, causing the rotor 40 to rotate. In addition, the rotor 40 can also be connected to a driven structure such as an impeller to drive the driven structure such as the impeller to rotate when rotating. Optionally, the rotor 40 can be located in the accommodating cavity 11 of the housing 10, or one end of the rotor 40 can also pass through the housing 10 and extend to the outside of the housing 10. This embodiment does not limit this.

[0040] It can be understood that the connection taps 22 are electrically connected to the coil body 21 , and there is a connection portion between each connection tap 22 and the coil body 21 .

[0041] In these embodiments, the connection parts between each connecting tap 22 in the tap cluster and the coil body 21 are arranged to be spaced apart along the circumference of the rotor 40, or the connection parts between each connecting tap 22 in the tap cluster and the coil body 21 are arranged to be adjacent to each other along the circumference of the rotor 40, or the connection parts between some connecting taps 22 in the tap cluster and the coil body 21 are arranged to be spaced apart along the circumference of the rotor 40, and the connection parts between some connecting taps 22 and the coil body 21 are adjacent to each other along the circumference of the rotor 40. This can reduce electromagnetic interference inside the motor, and make the rotor 40 rotate more smoothly under the action of the magnetic field of the coil 20, thereby improving the stability of the motor.

[0042] It should be noted that, when the connection parts between each connection tap 22 in the tap cluster and the coil body 21 are spaced apart along the circumference of the rotor 40, there is a certain spacing distance between the connection parts between two adjacent connection taps 22 in the tap cluster and the coil body 21, and the two adjacent connection parts are separated from each other and do not touch. When the connection parts between each connection tap 22 in the tap cluster and the coil body 21 are adjacently distributed along the circumference of the rotor 40, there is no spacing distance between the connection parts between two adjacent connection taps 22 in the tap cluster and the coil body 21, and the two adjacent connection parts can touch each other. Alternatively, when the connection parts between some of the connection taps 22 in the tap cluster and the coil body 21 are spaced apart along the circumference of the rotor 40, and the connection parts between some of the connection taps 22 and the coil body 21 are adjacently distributed along the circumference of the rotor 40, there is a certain spacing distance between the spaced connection parts, and the adjacent connection parts can touch each other.

[0043] Preferably, when the connection parts between each connection tap 22 in the tap cluster and the coil body 21 are distributed at intervals along the circumference of the rotor 40, it is preferred that the connection parts between each connection tap 22 in the tap cluster and the coil body 21 are evenly distributed along the circumference of the rotor 40 to further improve the stability of the motor.

[0044] Figure 3 This is another structural schematic diagram of the coil provided in some embodiments of the present application.

[0045] In some embodiments, see Figure 2 The tap cluster includes a first tap 223, the first tap 223 includes a first connecting portion 221, the first connecting portion 221 is electrically connected to the coil body 21, and extends from the accommodating cavity 11 through the via hole to the outside of the housing 10; and / or, please refer to Figure 3 The tap cluster includes a second tap 224, the second tap 224 includes a first connecting portion 221 and a second connecting portion 222, the first connecting portion 221 extends from the accommodating cavity 11 through a via to the outside of the housing 10, and the second connecting portion 222 is electrically connected to the coil body 21 and the first connecting portion 221 respectively.

[0046] Specifically, if Figure 2 As shown, the tap cluster may include only a first tap 223, which includes a first connecting portion 221. The first connecting portion 221 may extend approximately in a straight line along the length direction of the through-hole, with one end electrically connected to the coil body 21, and the other end extending to the outside of the housing 10 through the through-hole for electrical connection to the drive cable 30, wherein part of the first connecting portion 221 is located in the accommodating cavity 11, and part of the first connecting portion 221 is located outside the housing 10. In the tap cluster, the number of first taps 223 may be multiple, and the connection parts between the first connecting portion 221 of each first tap 223 and the coil body 21 may be arranged close to each other, so that a tap cluster can be formed without bending, which can reduce the difficulty of assembling the connecting taps 22. Moreover, each first tap 223 in the tap cluster can extend to the outside of the housing 10 through the same via hole. On the one hand, it can improve the overall structural strength of each first tap 223, so as to reduce the risk of the first connecting part 221 breaking during the assembly process of passing through the housing 10 and extending to the outside of the housing 10. At the same time, it can improve the overall tensile strength of each first connecting part 221 after being connected to the drive cable 30, and improve the connection reliability between the connecting tap 22 and the drive cable 30. On the other hand, it can also reduce the number of via holes opened on the housing 10, reduce the processing difficulty of the housing 10, and thus improve the production efficiency of the motor.

[0047] Alternatively, the tap cluster may include only second taps 224, each of which includes a first connection portion 221 and a second connection portion 222. The second connection portion 222 may extend in a straight line or in a curved line. The second connection portion 222 may serve as a transition section for connecting the coil body 21 and the first connection portion 221, wherein one end of the second connection portion 222 is electrically connected to the coil body 21, and the other end is electrically connected to the corresponding first connection portion 221. The first connection portion 221 may extend approximately in a straight line along the length direction of the via hole, and may extend outside the housing 10 through the via hole to be electrically connected to the drive cable 30. In the tap cluster, there may be multiple second taps 224, and the connection portions between the second connection portion 222 of each second tap 224 and the coil body 21 may be arranged to be spaced apart from each other. In this case, the second connection portions 222 may extend in a direction approaching each other, so that the first connection portions 221 of each second tap 224 are brought together.

[0048] Or, as Figure 3 As shown, the tap cluster may also include a first tap 223 and a second tap 224, wherein the first tap 223 includes a first connection portion 221, and the second tap 224 includes a first connection portion 221 and a second connection portion 222. The first connection portion 221 of the first tap 223 is directly electrically connected to the coil body 21, and the first connection portion 221 of the second tap 224 may be electrically connected to the coil body 21 through the corresponding second connection portion 222. The second connection portion 222 of the second tap 224 may extend toward the first connection portion 221 close to the first tap 223, so that the first connection portion 221 of the second tap 224 is brought together with the first connection portion 221 of the first tap 223. In this process, there is no need to bend the first tap 223, which can reduce the difficulty of bringing the connection taps 22 together and improve production efficiency.

[0049] Optionally, when there are multiple second taps 224, the first tap 223 can be set close to the center of each second tap 224. Preferably, the number of second taps 224 on both sides of the first tap 223 is the same, so that the second connection portion 222 of each second tap 224 can bend and gather toward the direction close to the first tap 223.

[0050] See also Figure 3 In some embodiments, the tap cluster includes a first tap 223 and at least two second taps 224, and the second connection portion 222 of each second tap 224 is bent and extends in a direction close to the first tap 223, wherein the first connection portion 221 of the second tap 224 is bent relative to the corresponding second connection portion 222, so that the first connection portion 221 of the first tap 223 and the first connection portion 221 of each second tap 224 are gathered together.

[0051] Specifically, the second tap 224 includes a first connection portion 221 and a second connection portion 222, wherein the second connection portion 222 is bent and extends in a direction close to the first tap 223, so that the first connection portion 221 of the second tap 224 is close to the first tap 223. The first connection portion 221 of the second tap 224 is bent relative to the corresponding second connection portion 222, so that the extension direction of the first connection portion 221 can be approximately parallel to the extension direction of the first connection portion 221 of the first tap 223, so as to facilitate the convergence of the first connection portion 221 of the first tap 223 and the first connection portion 221 of the second tap 224.

[0052] It should be noted that the total length of the first connection portion 221 and the corresponding second connection portion 222 of the second tap 224 can be approximately equal to the length of the first connection portion 221 of the first tap 223. Alternatively, the first tap 223 can also include a second connection portion 222, which is electrically connected to the coil body 21 through the second connection portion 222. When the second connection portion 222 of the second tap 224 is bent and extends in a direction close to the first tap 223, the second connection portion 222 of the first tap 223 does not need to be bent.

[0053] In some embodiments, the lengths of the second connection portions 222 of at least two second taps 224 are approximately equal, and the extension paths of the second connection portions 222 of the at least two second taps 224 are approximately equal.

[0054] Please continue reading Figure 1 and Figure 3 In some embodiments, the second connecting portion 222 is attached to the end surface of the coil body 21 and bends and extends within the end surface of the coil body 21 toward the first tap 223, thereby improving the stability of the second connecting portion 222 and the overall stability of the connecting tap 22.

[0055] It should be noted that the second connection portion 222 can be bent and extended along the circumference of the rotor 40 within the end surface of the coil body 21; or, it can also be bent and extended along an irregular direction within the end surface of the coil body 21. For example, the second connection portion 222 can be bent and extended within the end surface of the coil body 21 and have a wavy shape.

[0056] In some embodiments, the second connection portions 222 in at least two second taps 224 can be bent and extended along the circumference of the rotor 40 within the end surface of the coil body 21. Compared with bending and extending along an irregular direction, the extension path of the second connection portion 222 is the shortest, its length is the smallest, and the total length of each second connection portion 222 is the shortest, which can better simplify the structure of the coil 20.

[0057] Figure 4 is a top view of coils provided in other embodiments of the present application, Figure 5 is a top view of coils provided in some embodiments of the present application, Figure 6 1 is a top view of a coil provided in some further embodiments of the present application.

[0058] See also Figures 2 to 6 In some embodiments, the motor further includes a rotor 40, at least a portion of which is disposed within the housing 10; each first connection portion 221 is distributed radially or circumferentially along the rotor 40; or, each first connection portion 221 forms at least two connection groups, and each connection group is distributed radially along the rotor 40.

[0059] See also Figure 2 and Figure 4 , each first connection portion 221 is distributed along the radial or circumferential direction of the rotor 40. For example, when three first connection portions 221 are gathered together, the three first connection portions 221 can be arranged in sequence along the radial or circumferential direction of the rotor 40, and one of the first connection portions 221 is located between the other two first connection portions 221 along the radial or circumferential direction of the rotor 40, and extends to the outside of the casing 10 through the through hole on the casing 10.

[0060] Alternatively, see Figure 5 and Figure 6 , each first connection portion 221 can form at least two connection groups, each connection group includes at least one first connection portion 221, and each connection group is distributed along the radial direction of the rotor 40. For example, when three first connection portions 221 are gathered together, the three first connection portions 221 can form two connection groups, wherein the first connection group can include two first connection portions 221 arranged in sequence along the circumferential direction of the rotor 40, and the second connection group can include one first connection portion 221, and the two connection groups are arranged in sequence along the radial direction of the rotor 40, and the axis center of the first connection portion 221 in the second connection group can be located between the axis centers of the two first connection portions 221 in the first connection group.

[0061] In these embodiments, the first connection parts 221 in the tap cluster are arranged to be distributed radially or circumferentially along the rotor 40, or the first connection parts 221 in the tap cluster can be formed into at least two connection groups, and each connection group is distributed radially along the rotor 40. The gathered first connection parts 221 can be arranged reasonably and regularly, which can make the wiring of each first connection part 221 more orderly, reduce the difficulty of connecting the first connection part 221 and the drive cable 30, and avoid affecting the connection efficiency between the two due to the messy wiring of the first connection part 221 during the connection process of the first connection part 221 and the drive cable 30.

[0062] In some embodiments, in some embodiments, each connection tap 22 in the tap cluster extends to the outside of the housing 10 through the same via hole, and each connection tap 22 in the tap cluster is relatively fixed and insulated from each other.

[0063] Specifically, because the distances between the connection taps 22 in the tap cluster are close, each connection tap 22 in the tap cluster extends to the outside of the housing 10 through the same via hole, which not only reduces the number of via holes on the housing 10 but also helps reduce the size of the corresponding via holes, thereby reducing the difficulty of processing the housing 10 and improving the structural strength of the housing 10. In addition, the connection taps 22 in the tap cluster are relatively fixed and insulated from each other, which can further improve the structural strength of each connection tap 22 in the tap cluster, reduce the risk of the connection taps 22 breaking during assembly, and at the same time improve the overall tensile strength of each connection tap 22 after being connected to the drive cable 30, thereby improving the connection reliability between the connection tap 22 and the drive cable 30.

[0064] In some embodiments, the connection taps 22 in the tap cluster include a conductor and an insulating layer wrapped around the outer periphery of the conductor. At least part of the insulating layer of each connection tap 22 in the tap cluster is melted and bonded into an integral structure, without the need for additional connecting structures to fix and insulate each connection tap 22. This can reduce the space occupied by each connection tap 22 and simplify the structure of the motor.

[0065] Furthermore, the insulating layer may include an insulating sublayer and an adhesive sublayer, the insulating sublayer is coated on the outer peripheral side of the conductor, the adhesive sublayer is coated on the outer peripheral side of the insulating sublayer, and at least part of the adhesive sublayer of each connecting tap 22 in the tap cluster is melt-bonded into an integral structure, thereby ensuring that each connecting tap 22 in the tap cluster is insulated from each other and the relative fixation of each connecting tap 22 can be achieved through the adhesive sublayer.

[0066] In some embodiments, the motor further includes adhesive, and the gathered connection taps 22 are fixedly connected by the adhesive, which can reduce the difficulty of connecting the connection taps 22 and improve the production efficiency of the motor.

[0067] Please refer to Figures 1-6 On the second aspect, an embodiment of the present application further provides a coil 20, including a coil body 21 and a plurality of connecting taps 22, at least some of the connecting taps 22 are gathered to form a tap cluster, and each connecting tap 22 in the tap cluster is used to extend from the accommodating cavity 11 of the motor through a via hole to the outside of the motor casing 10.

[0068] In these embodiments, at least some of the connection taps 22 are gathered to form a tap cluster. When the coil body 21 is assembled in the accommodating cavity 11 of the motor, each connection tap 22 in the tap cluster can extend to the outside of the housing 10 through the same via hole on the housing 10 for electrical connection with the drive cable 30. On the one hand, the overall structural strength of each connection tap 22 in the tap cluster can be improved, and the risk of breakage of this part of the connection taps 22 during the assembly process can be reduced. At the same time, the overall tensile strength of each connection tap 22 in the tap cluster after being connected to the drive cable 30 can be improved, and the connection reliability of this part of the connection tap 22 and the drive cable 30 can be improved. On the other hand, the number of vias formed in the housing 10 can be reduced, the processing difficulty of the housing 10 can be reduced, and the production efficiency of the motor can be improved.

[0069] Thirdly, embodiments of the present application further provide a ventricular assist device, including the aforementioned motor. The ventricular assist device provided by embodiments of the present application has the technical effects of the motor described in any of the aforementioned embodiments, and the explanations of the structures and terms identical or corresponding to those in the aforementioned embodiments are not further elaborated herein.

[0070] Optionally, the ventricular assist device may further include a drive cable 30 and a blood pumping catheter. The drive cable 30 is electrically connected to the connecting tap 22 of the motor. The blood pumping catheter may include a tube body and an impeller. A blood flow channel for blood circulation may be formed in the tube body. A blood inlet and a blood outlet may be formed on the tube body. The impeller is arranged in the blood flow channel and close to the blood outlet. The rotor 40 of the motor may be connected to the impeller. The drive cable 30 may provide a three-phase alternating current to the coil body 21 through the connecting tap 22. The coil body 21 produces an electromagnetic effect under the action of the current, generating a rotating magnetic field, thereby driving the rotor 40 to rotate, and driving the impeller to rotate through the rotor 40, and then driving the blood at the blood inlet into the blood flow channel through the impeller and flowing out from the blood outlet.

[0071] Optionally, the ventricular assist device may further include a sheath (not shown), which is arranged around the outer circumference of the drive cable 30 to prevent the drive cable 30 from directly contacting human tissue after the ventricular assist device is inserted into the human body.

[0072] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A motor, characterized in that: include: The housing is formed with a receiving cavity and a via hole communicating with the receiving cavity; The coil includes a coil body and a plurality of connection taps electrically connected to the coil body respectively. The coil body is located in the accommodating cavity. At least some of the connection taps are gathered in the accommodating cavity to form a tap cluster. At least some of the connection taps extend outside the casing through the via hole and are used to be electrically connected to the drive cable.

2. The motor according to claim 1, characterized in that The motor further includes a rotor, at least a portion of which is disposed within the housing; The connection locations between the connection taps in the tap cluster and the coil body are spaced apart along the circumferential direction of the rotor; or, The connection locations between the connection taps in the tap cluster and the coil body are adjacently distributed along the circumferential direction of the rotor; or, In the tap cluster, connection locations between some of the connection taps and the coil body are spaced apart along the circumferential direction of the rotor, and connection locations between some of the connection taps and the coil body are adjacently distributed along the circumferential direction of the rotor.

3. The motor according to claim 1, characterized in that: The tap cluster includes a first tap, the first tap includes a first connecting portion, the first connecting portion is electrically connected to the coil body, and extends from the accommodating cavity through the via hole to the outside of the housing; and / or, The tap cluster includes a second tap, and the second tap includes a first connecting portion and a second connecting portion. The first connecting portion extends from the accommodating cavity through the via hole to the outside of the housing, and the second connecting portion is electrically connected to the coil body and the first connecting portion respectively.

4. The motor according to claim 3, characterized in that The tap cluster includes a first tap and at least two second taps, the second connection portion of each second tap is bent and extends toward the direction close to the first tap, wherein the first connection portion of the second tap is bent relative to the corresponding second connection portion, so that the first connection portion of the first tap and the first connection portion of each second tap are gathered together.

5. The motor according to claim 4, characterized in that The second connecting portion is attached to an end surface of the coil body and is bent and extended in the end surface of the coil body toward the first tap.

6. The motor according to claim 3, characterized in that The motor further includes a rotor, at least a portion of which is disposed within the housing; The first connection parts are distributed along the radial direction or circumferential direction of the rotor; or the first connection parts form at least two connection groups, and the connection groups are distributed along the radial direction of the rotor.

7. The motor according to any one of claims 1 to 6, characterized in that: The connection taps in the tap cluster extend to the outside of the housing through the same via hole, and the connection taps in the tap cluster are relatively fixed and insulated from each other.

8. The motor according to claim 7, characterized in that The connection tap includes a conductor and an insulating layer covering the outer periphery of the conductor, and at least a portion of the insulating layer of each connection tap in the tap cluster is melt-bonded to form an integrated structure.

9. A coil, characterized in that: include: Coil body; A plurality of connection taps, at least some of which are gathered together to form a tap cluster, wherein each connection tap in the tap cluster is used to extend from the accommodating cavity of the motor through a via hole to the outside of the housing of the motor.

10. A ventricular assist device, characterized in that: The motor comprises the motor according to any one of claims 1 to 8.

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