Conveying handle, circumferential adjusting assembly and implant conveying system

Abstract

The utility model belongs to the field of medical equipment, and particularly relates to a conveying handle, a circumferential adjusting assembly and an implant conveying system. The circumferential adjusting assembly comprises a first part and a second part, and the first part and the second part are connected in a sleeved mode and can rotate relative to the second part. The first portion includes a first housing. The second portion includes a second housing and an axial support. The second housing abuts against the first housing. An axial support is connected inside the second housing and partially extends into the interior of the first housing. The first shell or the axial supporting piece is provided with one or more elastic connecting pieces in the circumferential direction, correspondingly, the axial supporting piece or the first shell is provided with a plurality of positioning grooves matched with the elastic connecting pieces in the circumferential direction, and the elastic connecting pieces abut against the interiors of the positioning grooves to achieve rotation limiting. According to the conveying handle, the circumferential adjusting assembly and the implant conveying system, the conveying pipeline can be accurately positioned at a certain angle while rotating in the circumferential direction.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, and in particular relates to a delivery handle, a circumferential adjustment component and an implant delivery system. Background Art

[0002] Cardiac interventional surgery is a new technology for diagnosing and treating cardiovascular diseases. It is a diagnostic and treatment method that punctures the surface blood vessels, inserts a cardiac catheter under continuous digital subtraction angiography, and uses specific cardiac catheter operation techniques to confirm and treat heart disease.

[0003] Cardiac interventional surgical instruments need to place the implant - the valve prosthesis - into the specified position. Due to the different degrees of differences in individual heart structures, it is more difficult to implant the valve prosthesis into the correct position. When the valve prosthesis is delivered to the position of the native valve ring through the delivery handle, its circumferential angle cannot be guaranteed to be completely correct, which requires the delivery handle to rotate the valve prosthesis clockwise / counterclockwise to achieve the accurate installation position. In order to adjust accurately, the valve prosthesis must also be accurately positioned when the rotation stops without causing angle changes, which greatly increases the difficulty of designing the delivery handle.

[0004] Therefore, it is necessary to develop a delivery handle and its circumferential adjustment component and an implant delivery system that can achieve accurate positioning at a certain angle while the delivery pipeline rotates circumferentially. Utility Model Content

[0005] The utility model aims to provide a delivery handle, a circumferential adjustment component and an implant delivery system, which allow the delivery pipeline to be accurately positioned at a certain angle while being circumferentially rotated.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] According to a first aspect of the utility model, there is provided a circumferential adjustment assembly, comprising:

[0008] a first portion, the first portion comprising a first housing; and

[0009] The second part, the first part is sleeved with the second part and can rotate relative to the second part, and the second part includes:

[0010] a second housing abutting against the first housing; and

[0011] An axial support member, which is connected to the inner side of the second shell and partially extends into the first shell. The first shell or the axial support member is circumferentially provided with one or more elastic connectors. Correspondingly, the axial support member or the first shell is circumferentially provided with a plurality of positioning grooves matching the elastic connector, the number of the positioning grooves is greater than or equal to the number of the elastic connectors, and the elastic connector abuts against the positioning grooves to achieve rotational limiting.

[0012] According to an embodiment of the utility model, the elastic connecting member includes a spring and a sphere arranged at the end of the spring, the spring abuts the sphere in the positioning groove, and the shape of the positioning groove is set to be a hemispherical shape matching the sphere.

[0013] According to one embodiment of the utility model, a radially extending flange portion is provided on the first shell or the axial support member, and correspondingly, a groove portion matching the flange portion is provided on the axial support member or the first shell, and the flange portion is engaged in the groove portion to achieve axial limiting.

[0014] According to an embodiment of the present utility model, the one or more elastic connecting members are arranged on the flange portion, and the multiple positioning grooves are arranged on the groove portion.

[0015] According to a second aspect of the utility model, a delivery handle is provided, which includes the circumferential adjustment assembly described in the first aspect of the utility model.

[0016] According to one embodiment of the utility model, the delivery handle further comprises:

[0017] The third part is sleeved with the second part and can rotate relative to the second part, and the third part includes:

[0018] a third shell, the third shell abutting against the second shell;

[0019] An axial connecting member is connected to the inner side of the third shell and partially extends into the interior of the second shell and abuts against the axial supporting member.

[0020] According to a third aspect of the present invention, there is provided an implant delivery system, comprising:

[0021] an inner tube assembly; and

[0022] A delivery handle, the delivery handle is connected to the inner tube assembly, and the delivery handle comprises:

[0023] A first part, the first part comprising a first housing, the first housing being snap-fitted with the inner tube assembly to allow the inner tube assembly to move axially relative to the first housing but to prevent the inner tube assembly from rotating circumferentially relative to the first housing; and

[0024] The second part, the first part is sleeved with the second part and can rotate relative to the second part, and the second part includes:

[0025] a second housing abutting against the first housing; and

[0026] An axial support member, the axial support member is connected to the inner side of the second shell and partially extends into the first shell, the first shell or the axial support member is circumferentially provided with one or more elastic connectors, correspondingly, the axial support member or the first shell is circumferentially provided with a plurality of positioning grooves matching the elastic connector, the number of the positioning grooves is greater than or equal to the number of the elastic connectors, and the elastic connector abuts against the positioning grooves to achieve rotation limitation;

[0027] The third part is sleeved with the second part and can rotate relative to the second part. The third part is threadedly connected with the inner tube assembly and can drive the inner tube assembly to move axially. The third part includes:

[0028] a third shell, the third shell abutting against the second shell;

[0029] An axial connecting member is connected to the inner side of the third shell and partially extends into the interior of the second shell and abuts against the axial supporting member.

[0030] According to one embodiment of the utility model, a plurality of axially extending grooves are provided on the outer side wall of the inner tube assembly, and a toothed structure matching the axially extending grooves is provided on the inner side wall of the first outer shell, and the toothed structure is clamped in the axially extending grooves to allow the inner tube assembly to move axially relative to the first outer shell but prevent the inner tube assembly from rotating circumferentially relative to the first outer shell.

[0031] According to one embodiment of the utility model, an internal thread is provided on the inner wall of the axial connector, and an external thread is provided on the outer wall of a part of the inner tube assembly, and the internal thread and the external thread are engaged so that the rotation of the third part can drive the inner tube assembly to move axially.

[0032] According to an embodiment of the utility model, the elastic connecting member includes a spring and a sphere arranged at the end of the spring, the spring abuts the sphere in the positioning groove, and the shape of the positioning groove is set to be a hemispherical shape matching the sphere.

[0033] According to one embodiment of the utility model, a radially extending flange portion is provided on the first shell or the axial support member, and correspondingly, a groove portion matching the flange portion is provided on the axial support member or the first shell, and the flange portion is engaged in the groove portion to achieve axial limiting.

[0034] According to an embodiment of the present utility model, the one or more elastic connecting members are arranged on the flange portion, and the multiple positioning grooves are arranged on the groove portion.

[0035] According to one embodiment of the utility model, the inner tube assembly comprises:

[0036] Inner tube;

[0037] An inner tube sleeve, wherein the inner tube sleeve is sleeved on the outer side of the proximal end of the inner tube, and the plurality of axially extending grooves are arranged on the outer side wall of the distal end of the inner tube sleeve;

[0038] A driving member, which is sleeved on the outer side of the proximal end of the inner sleeve and can rotate relative to the inner sleeve, and the outer side wall of the driving member is provided with an external thread for engaging with the internal thread provided on the inner side wall of the axial connecting member; and

[0039] A locking member is fixedly connected to the proximal end of the inner sleeve and is used to lock the driving member in place to prevent the driving member from axial movement.

[0040] By adopting the above technical solution, the utility model has at least the following beneficial effects:

[0041] The delivery handle, circumferential adjustment component and implant delivery system provided by the utility model are configured such that one or more elastic connectors are arranged on one of the structures of the first part and the second part that can rotate relative to each other, and a plurality of positioning grooves matching the elastic connectors are arranged on the other structure. When the first part and the second part rotate relative to each other, the elastic connectors can be engaged in the positioning grooves to form a brake, thereby achieving limiting when the rotation stops, which helps to achieve accurate positioning of the implant. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 A schematic diagram of the structure of an implant delivery system provided by an embodiment of the utility model;

[0044] Figure 2 for Figure 1 A partial cross-sectional view of the implant delivery system shown;

[0045] Figure 3 A partial enlarged view of an implant delivery system provided by an embodiment of the utility model;

[0046] Figure 4 for Figure 3 a side view of the portion shown;

[0047] Figure 5 A schematic diagram of the structure of an elastic connector provided in one embodiment of the utility model;

[0048] Figure 6 A schematic structural diagram of a half portion of a first housing provided in one embodiment of the utility model;

[0049] Fig. 7A and Figure 7B A schematic diagram of the structure of an inner tube assembly provided in one embodiment of the utility model, wherein Fig. 7A is a top view, Figure 7B For along Fig. 7A A cross-sectional view taken along line AA in FIG.

[0050] Figure 8 A schematic structural diagram of a portion of an inner sleeve provided in one embodiment of the utility model.

[0051] Reference numerals list

[0052] 1 delivery handle; 11 first part; 111 first shell; 1111 groove portion; 1112 toothed structure; 12 second part; 121 second shell; 122 axial support member; 1221 flange portion; 1222 main body; 13 third part; 131 third shell; 132 axial connecting member; 100 elastic connecting member; 1001 sphere; 1002 external thread; 101 positioning groove; 2 inner tube assembly; 21 inner tube; 22 inner tube sleeve; 221 axially extending groove; 23 driving member; 24 locking member. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the utility model clearer, the following is a further detailed description of the utility model embodiments in conjunction with specific embodiments and with reference to the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0054] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents recorded in the specification so as to facilitate the understanding and reading of technical personnel in this field, and are not used to limit the conditions under which the present application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should fall within the scope of the technical content disclosed in the present application.

[0055] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The term "or" is usually used to include the meaning of "and / or", unless the content clearly indicates otherwise.

[0056] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. The terms "bottom", "top", "lower", "inside", and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0057] The utility model relates to an implant delivery system and a delivery handle thereof for delivering an implant to a target position in a human body. The implant may be, for example, a valve prosthesis. However, it should be understood that the implant delivery system and the delivery handle thereof provided by the utility model are not limited to delivering valve prostheses, and may also deliver other types of implants.

[0058] In the description of the present invention, the term "proximal end" refers to a relative position closer to the operator's operating end and farther from the target position in the human body, and the term "distal end" refers to a relative position farther from the operator's operating end and closer to the target position in the human body.

[0059] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0060] The first aspect of the present invention provides a circumferential adjustment assembly for a delivery handle. Figure 1 , Figure 2 , Figure 3 As shown, the circumferential adjustment assembly for the delivery handle 1 at least comprises a first part 11 and a second part 12 connected in sequence, wherein the first part 11 is sleeved with the second part 12 and can rotate relative to the second part 12.

[0061] The first part 11 includes a first housing 111. The second part 12 includes a second housing 121 and an axial support 122 connected to each other. The second housing 121 abuts against the first housing 111, specifically, the distal end surface of the second housing 121 abuts against the proximal end surface of the first housing 111. The axial support 122 is connected to the inner side of the second housing 121 and partially extends into the interior of the first housing 111, that is, the first housing 111 of the first part 11 is sleeved on the outside of the axial support 122 of the second part 12. The first housing 111 can rotate circumferentially relative to the axial support 122.

[0062] The first shell 111 or the axial support 122 is provided with one or more elastic connectors 100 along the circumferential direction, and correspondingly, the axial support 122 or the first shell 111 is provided with a plurality of positioning grooves 101 matching the elastic connector 100 along the circumferential direction, and the number of the positioning grooves is not less than the number of the elastic connectors, and the elastic connector 100 abuts against the positioning grooves 101 to achieve rotational limitation. In some embodiments, only one elastic connector 100 may be provided on one of the first shell 111 and the axial support 122, and a plurality of positioning grooves 101 matching the elastic connector 100 may be provided on the other of the first shell 111 and the axial support 122. During the rotation of the first shell 111 relative to the axial support 122, the elastic connector 100 may be engaged in any one of the positioning grooves 101 to achieve rotational limitation at the specific angle. In some other embodiments, a plurality of elastic connectors 100 may be provided on one of the first shell 111 and the axial support member 122, and a plurality of positioning grooves 101 matching these elastic connectors 100 may be provided on the other of the first shell 111 and the axial support member 122. The number of the positioning grooves 101 may correspond to the number of the elastic connectors 100, or the number of the positioning grooves 101 may also be greater than the number of the elastic connectors 100. During the rotation of the first shell 111 relative to the axial support member 122, each of these elastic connectors 100 may be engaged in a corresponding one of the positioning grooves 101 to achieve rotational limiting at a specific angle.

[0063] exist Figure 3 In the illustrated embodiment, the elastic connector 100 is disposed on the axial support 122, and the positioning groove 101 is disposed on the first housing 111. In other embodiments, the elastic connector 100 may be disposed on the first housing 111, and the positioning groove 101 may be disposed on the axial support 122.

[0064] In the present invention, by providing an elastic connector 100 on one of the structures of the first housing 111 and the axial support 122 that can rotate relative to each other and providing a plurality of positioning grooves 101 that match the elastic connector on the other structure, when the first housing 111 rotates relative to the axial support 122, the elastic connector 100 can be engaged in the corresponding positioning groove 101 to form a brake, restrict further circumferential movement (such as rotation), and achieve precise positioning when the rotation stops, so that the delivery handle provided by the present invention can achieve precise positioning of the implant. It should be understood that the control of the adjustment accuracy can be achieved by controlling the number of positioning grooves 101, and the more the number of positioning grooves, the finer the adjustment accuracy.

[0065] In some embodiments, a radially extending flange portion is provided on the first housing 111 or the axial support member 122, and correspondingly, a groove portion matching with the flange portion is provided on the axial support member 122 or the first housing 111. Through the cooperation between the flange portion and the groove portion, the axial position of the axial support member 122 can be achieved, and the axial movement of the axial support member 122 relative to the first housing 111 (or the second part 12 relative to the first part 11) can be prevented. In the embodiment shown in the drawings, a radially outwardly extending flange portion 1221 is provided on the axial support member 122, specifically, the axial support member 122 includes an axially extending main body portion 1222 and a flange portion 1221 extending radially outward from the main body portion 1221; and a radially inwardly recessed groove portion 1111 is provided on the first housing 111. In other embodiments, the axial support member 122 may be provided with a radially inwardly recessed groove portion, and the first housing 111 may be provided with a radially protruding flange portion.

[0066] Preferably, the elastic connector 100 is disposed on the flange portion 1221, and the positioning groove 101 is disposed on the groove portion 1111. Specifically, the flange portion 1221 is provided with a recess extending radially inward, the elastic connector 100 is disposed in the recess, and the positioning groove 101 is disposed on the bottom wall of the groove portion 1111.

[0067] In some embodiments, Figure 5 As shown, the elastic connector 100 includes a spring (not shown) and a ball 1001 disposed at the end of the spring, and the spring abuts the ball 1001 in the positioning groove 101, that is, the spring is set in a compressed state to apply a certain pressure to the positioning groove 101. Preferably, the shape of the positioning groove 101 is set to be a hemispherical shape that matches the ball 1001. Figure 5 In the illustrated embodiment, the elastic connector 100 is provided in the form of a threaded column with an external thread 1002, the ball 1001 is partially clamped inside the threaded column, and the spring is completely arranged inside the threaded column. The threaded column can be threadedly connected to a recessed portion provided on the flange portion 1221. Specifically, an internal thread is provided inside the recessed portion, and the external thread 1002 of the threaded column cooperates with the internal thread of the recessed portion to achieve the installation of the elastic connector.

[0068] The second aspect of the present invention provides a delivery handle for delivering an implant, wherein the delivery handle comprises the circumferential adjustment assembly described in the first aspect of the present invention.

[0069] In some embodiments, Figure 1 , Figure 2As shown, the delivery handle 1 also includes a third part 13, which is sleeved with the second part 12 and can rotate relative to the second part 12. The third part 13 includes a third shell 131 and an axial connection member 132 connected to each other. The third shell 131 abuts against the second shell 121, specifically, the distal end surface of the third shell 131 abuts against the proximal end surface of the second shell 121. The axial connection member 132 is connected to the inner side of the third shell 131 and partially extends into the interior of the second shell 121 and abuts against the axial support member 122, that is, the second shell 121 of the second part 12 is sleeved on the outside of the axial connection member 132 of the third part 13. The second shell 121 is stationary, and the axial connection member 132 can rotate relative to the second shell 121.

[0070] A third aspect of the present invention provides an implant delivery system. Figure 1 As shown, the implant delivery system includes a delivery handle 1 and an inner tube assembly 2. The delivery handle 1 is connected to the inner tube assembly 2. The inner tube assembly 2 extends from the delivery handle 1 to the distal end. The specific structure of the delivery handle 1 is the same as that described in the second aspect of the utility model, and will not be repeated here. The following is a brief description of the inner tube assembly 2 and its connection relationship with the delivery handle 1.

[0071] like Figure 1 , Figure 2 , Figure 3 As shown, in the embodiment shown, the first part 11 of the delivery handle 1 is engaged with the inner tube assembly 2, and serves as a first knob, which is used to drive the inner tube assembly 2 and then drive the implant (such as a valve prosthesis) to rotate circumferentially, which helps to make the implant reach an accurate installation position. Specifically, the first shell 111 of the delivery handle 1 is engaged with the inner tube assembly 2, allowing the inner tube assembly 2 to move axially relative to the first shell 111 but preventing the inner tube assembly 2 from rotating circumferentially relative to the first shell 111. For this purpose, a plurality of axially extending grooves are provided on the outer side wall of the inner tube assembly 2 (see Figure 4 , Figure 8 ), a toothed structure adapted to the axially extending groove is provided on the inner side wall of the first shell 111, and the toothed structure is clamped in the axially extending groove, so that the first shell 111 can drive the inner tube assembly 2 to rotate circumferentially in the radial direction, but does not limit the axial movement of the inner tube assembly 2 relative to the first shell 111.

[0072] Figure 6 A half schematic diagram of a first shell 111 provided for an embodiment of the utility model, from which it can be clearly seen the toothed structure 1112 arranged at the left end of the first shell 111, the groove portion 1111 arranged at a position close to the right end of the first shell 111, and the positioning groove 101 arranged in the groove portion 1111.

[0073] In the illustrated embodiment, the third portion 13 is threadedly connected to the inner tube assembly 2, and serves as a second knob for driving the inner tube assembly 2 to move axially, so as to assist the implantation process. Specifically, an inner wall of the axial connector 132 is provided with an internal thread, and an outer wall of a portion of the inner tube assembly 2 is provided with an external thread, and the internal thread and the external thread are engaged so that the rotation of the third portion 13 can drive the inner tube assembly 2 to move axially. To this end, it should be understood that the length of the external thread section on the inner tube assembly 2 is less than the length of the internal thread section of the axial connector 132, and the length of the internal thread section of the axial connector 132 is greater than or equal to the maximum axial movement range of the inner tube assembly 2. It should also be understood that the axial extension length of the axially extending groove 221 on the inner tube assembly 2 is greater than or equal to the length of the internal thread section of the axial connector 132, so as to ensure that the axial movement process proceeds smoothly.

[0074] Fig. 7A and Figure 7B A schematic diagram of the structure of an inner tube assembly provided for one embodiment of the utility model. As shown in the figure, the inner tube assembly 2 includes an inner tube 21, an inner tube sleeve 22, a driving member 23 and a locking member 24. The inner tube sleeve 22 is sleeved on the outer side of the proximal end of the inner tube 21, and is bonded or fixedly connected to the inner tube 21 (including but not limited to being fixed by other connecting members). A plurality of axially extending grooves for adapting to the toothed structure 1112 provided on the first outer shell 111 are provided on the outer side wall of the distal end of the inner tube sleeve 22. The driving member 23 is sleeved on the outer side of the proximal end of the inner tube sleeve 22, and can rotate relative to the inner tube sleeve 22. The outer side wall of the driving member 23 is provided with an external thread for engaging with the internal thread provided on the inner side wall of the axial connecting member 132. As shown Fig. 7A As shown, in the embodiment shown, the external thread is only provided on a part of the circumference of the driving member 23, for example, only covering a part of the 360-degree circumference of the driving member 23, and not covering the entire 360-degree circumference of the driving member 23. The locking member 24 is fixedly connected to the proximal end of the inner sleeve 22, for example, being threadedly connected to the proximal end of the inner sleeve 22, for locking the driving member 23 in place to prevent it from moving axially. In the embodiment shown, the inner sleeve 22 includes a first section, a second section, a third section and a fourth section arranged sequentially from the distal end to the proximal end, the axially extending groove 221 is generally provided on the outer side wall of the first section, the driving member 23 is sleeved on the outer side wall of the third section, the locking member 24 is threadedly connected to the outer side wall of the fourth section, wherein the outer diameter of the third section is smaller than the outer diameter of the second section, thereby forming a step portion between the two, and the driving member 23 is locked between the step portion and the locking member 24 through the threaded connection of the locking member 24 with the outer side wall of the fourth section, thereby preventing the driving member 23 from moving axially. Figure 8The schematic diagram of the structure of the first section of the inner sleeve 22 provided in one embodiment of the utility model clearly shows the axially extending grooves 221 arranged on the outer side wall of the first section of the inner sleeve 22. These axially extending grooves 221 are arranged parallel to each other and spaced apart.

[0075] When in use, the implant delivery system provided by the utility model can rotate the first outer shell 111 to drive the inner tube sleeve 22 and then drive the inner tube 21 to rotate circumferentially, thereby realizing circumferential adjustment of the implant. During this process, the inner tube 21, the inner tube sleeve 22 and the locking member 24 rotate circumferentially relative to the driving member 23, and the driving member 23 remains stationary; the third outer shell 131 can be rotated to drive the driving member 23 and then drive the inner tube sleeve 22 and the inner tube 21 to move axially, thereby realizing the delivery process of the implant. During this process, the entire inner tube assembly (driving member 23, inner tube sleeve 22, inner tube 21 and locking member 24) moves axially relative to the delivery handle. It can be seen that the implant delivery system provided by the utility model realizes independent adjustment of the circumferential rotation and axial movement of the inner tube assembly due to the special structural design of the delivery handle.

[0076] In summary, the delivery handle and its circumferential adjustment component and the implant delivery system provided by the utility model are provided with one or more elastic connectors on one of the structures of the first part and the second part that can rotate relative to each other and a plurality of positioning grooves matching the elastic connectors on the other structure. When the first part and the second part rotate relative to each other, the elastic connectors can be engaged in the positioning grooves to form a brake to achieve the limit when the rotation stops, which helps to achieve the accurate positioning of the implant. In addition, the implant delivery system and the delivery handle provided by the utility model have the advantages of simple structure and convenient adjustment.

[0077] The above are exemplary embodiments disclosed by the present utility model. The order in which the above embodiments are disclosed is for description only and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope disclosed by the embodiments of the present utility model (including the claims) is limited to these examples. Various changes and modifications may be made without departing from the scope defined by the claims. In addition, although the elements disclosed in the embodiments of the present utility model may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0078] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present utility model (including the claims) is limited to these examples; under the idea of ​​the embodiments of the present utility model, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present utility model as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.

Claims

1. A circumferential adjustment assembly, characterized in that: include: a first portion, the first portion comprising a first housing; as well as The second part, the first part is sleeved with the second part and can rotate relative to the second part, and the second part includes: a second housing, the second housing abutting against the first housing; as well as An axial support member, which is connected to the inner side of the second shell and partially extends into the first shell. The first shell or the axial support member is circumferentially provided with one or more elastic connectors. Correspondingly, the axial support member or the first shell is circumferentially provided with a plurality of positioning grooves matching the elastic connector, the number of the positioning grooves is greater than or equal to the number of the elastic connectors, and the elastic connector abuts against the positioning grooves to achieve rotational limiting.

2. The circumferential adjustment assembly according to claim 1, characterized in that: The elastic connecting member comprises a spring and a sphere arranged at the end of the spring, wherein the spring abuts the sphere in the positioning groove, and the shape of the positioning groove is set to be a hemispherical shape matching the sphere.

3. The circumferential adjustment assembly according to claim 1, characterized in that: The first shell or the axial support is provided with a radially extending flange portion, and correspondingly, the axial support or the first shell is provided with a groove portion matching with the flange portion, and the flange portion is engaged in the groove portion to achieve axial limiting.

4. The circumferential adjustment assembly according to claim 3, characterized in that: The one or more elastic connecting members are arranged on the flange portion, and the plurality of positioning grooves are arranged on the groove portion.

5. A conveying handle, characterized in that: The invention comprises the circumferential adjustment assembly according to any one of claims 1 to 4.

6. An implant delivery system, characterized in that: include: Inner tube assembly; as well as A delivery handle, the delivery handle is connected to the inner tube assembly, and the delivery handle comprises: A first part, the first part includes a first shell, the first shell is clamped with the inner tube assembly, allowing the inner tube assembly to move axially relative to the first shell but preventing the inner tube assembly from rotating circumferentially relative to the first shell; The second part, the first part is sleeved with the second part and can rotate relative to the second part, and the second part includes: a second housing abutting against the first housing; and an axial support member, the axial support member being connected to the inner side of the second shell and partially extending into the first shell, the first shell or the axial support member being circumferentially provided with one or more elastic connectors, correspondingly, the axial support member or the first shell being circumferentially provided with a plurality of positioning grooves matching the elastic connector, the number of the positioning grooves being greater than or equal to the number of the elastic connectors, the elastic connector abutting against the positioning grooves to achieve rotation limiting; and The third part is sleeved with the second part and can rotate relative to the second part. The third part is threadedly connected with the inner tube assembly and can drive the inner tube assembly to move axially. The third part includes: a third shell, the third shell abutting against the second shell; An axial connecting member is connected to the inner side of the third shell and partially extends into the interior of the second shell and abuts against the axial supporting member.

7. The implant delivery system according to claim 6, characterized in that: A plurality of axially extending grooves are arranged on the outer side wall of the inner tube assembly, and a toothed structure matching the axially extending grooves is arranged on the inner side wall of the first outer shell, and the toothed structure is engaged in the axially extending grooves to allow the inner tube assembly to move axially relative to the first outer shell but prevent the inner tube assembly from rotating circumferentially relative to the first outer shell.

8. The implant delivery system according to claim 7, characterized in that An internal thread is arranged on the inner wall of the axial connector, and an external thread is arranged on the outer wall of a part of the inner tube assembly. The internal thread and the external thread are engaged so that the rotation of the third part can drive the inner tube assembly to move axially.

9. The implant delivery system according to claim 6, characterized in that The elastic connecting member comprises a spring and a sphere arranged at the end of the spring, wherein the spring abuts the sphere in the positioning groove, and the shape of the positioning groove is set to be a hemispherical shape matching the sphere; and / or The first housing or the axial support is provided with a radially extending flange portion, and correspondingly, the axial support or the first housing is provided with a groove portion matching with the flange portion, and the flange portion is engaged in the groove portion to achieve axial limiting; and / or The one or more elastic connecting members are arranged on the flange portion, and the plurality of positioning grooves are arranged on the groove portion.

10. The implant delivery system according to claim 8, characterized in that: The inner tube assembly comprises: Inner tube; An inner tube sleeve, wherein the inner tube sleeve is sleeved on the outer side of the proximal end of the inner tube, and the plurality of axially extending grooves are arranged on the outer side wall of the distal end of the inner tube sleeve; A driving member, which is sleeved on the outer side of the proximal end of the inner sleeve and can rotate relative to the inner sleeve, and the outer side wall of the driving member is provided with an external thread for engaging with the internal thread provided on the inner side wall of the axial connecting member; and A locking member is fixedly connected to the proximal end of the inner sleeve and is used to lock the driving member in place to prevent the driving member from axial movement.

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