Supporting device for conveyor

Abstract

The invention relates to a support device for a conveyor, the conveyor is used for conveying an implantation instrument, and the support device comprises a positioning support assembly; the shortening compensation assembly comprises a shell and a motion compensation component, and the shell is connected with the positioning support assembly; the motion compensation component is used for loading the conveyor and can axially move relative to the shell so as to realize shortening compensation of the implanted instrument; according to the conveying device, the problem that the axial size is shortened in the release process of the valve can be solved, and the positioned valve can be accurately released in situ in the release process.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a supporting device for a conveyor. Background Art

[0002] The human heart is divided into four chambers, each with its own "exit". There are four valves (mitral valve, aortic valve, pulmonary valve and tricuspid valve) that ensure that the blood pumped by the heart flows in the specified direction in the cardiovascular system. The mitral valve is located between the left atrium and the left ventricle. A normal mitral valve ensures that blood circulates in one direction from the left atrium to the left ventricle. However, when the mitral valve becomes diseased, it will become abnormally narrowed or dilated, or allow blood to flow back from the left ventricle to the left atrium. The loss of mitral valve function will affect the normal work of the heart, causing people to gradually weaken or endanger their lives.

[0003] In response to the loss of mitral valve function, less invasive transcatheter techniques for delivering replacement mitral valve assemblies have been developed. In such techniques, a self-expanding prosthetic valve is generally mounted in a crimped state on the end of a flexible catheter and advanced through the patient's blood vessels or body until the prosthetic valve reaches the implantation site, whereupon the prosthetic valve is released and expanded to its functional size at the site of the defective native mitral valve.

[0004] However, since the sheathed valve expands in the radial direction and shrinks in the axial direction during the release process, the actual release position deviates from the pre-positioned position, making it more difficult to release the valve accurately, resulting in increased difficulty and time of the operation. Summary of the invention

[0005] Based on this, it is necessary to provide a support device for a conveyor to solve the problem of low accuracy of valve release caused by axial shortening during valve release, so as to enable the positioned valve to be accurately released in situ during the release process. Specifically, 1. A support device for a conveyor is provided, wherein the conveyor is used to convey an implantable device, characterized in that it includes: a positioning bracket assembly;

[0006] The shortening compensation component includes a shell and a motion compensation component, wherein the shell is connected to the positioning bracket assembly; the motion compensation component is used to load the conveyor, and the motion compensation component drives the conveyor to move axially relative to the shell to achieve shortening compensation for the implant device.

[0007] Further, the housing is provided with an internal housing thread, the motion compensation component comprises a knob, and the knob is provided with an external thread section matching with the internal housing thread.

[0008] Furthermore, a plurality of knob grooves evenly distributed along the circumferential direction are arranged inside the knob, and the knob grooves are engaged with the implantation device release knob of the conveyor.

[0009] Furthermore, the proximal end portion of the knob groove is also provided with at least one limiting member distributed along the circumferential direction.

[0010] Furthermore, at least two arc-shaped plates evenly distributed along the circumference are arranged inside the shell, and the inner threads of the shell are arranged on the arc-shaped plates.

[0011] Furthermore, the motion compensation component also includes an inner core movably connected to the outer shell, the inner core having an inner core cavity, the inner core cavity being connected to the conveyor, the end face of the inner core being provided with a waist-shaped hole matching with the arc plate, at least two of the arc plates being able to pass through the waist-shaped hole into the inner core cavity, and the distal end face of the knob abuts against the inner core cavity to push the inner core to move.

[0012] Furthermore, the inner core cavity has an inner stepped end surface, and the distal end surface of the knob abuts against the inner stepped end surface.

[0013] Furthermore, the inner core cavity has a profiled hole, and the profiled hole cooperates with the conveyor to limit the rotation of the conveyor.

[0014] Furthermore, the knob includes a spiral body arranged at the proximal end of the external thread segment, and the motion compensation member also includes an inner cover plate connected to the proximal end surface of the inner core, the inner cover plate has a center hole for the arc plate and the spiral body to pass through, and the center hole includes two circular arc segments symmetrically arranged along the circumferential direction, and the curvature radius of the circular arc segment is greater than or equal to the outer diameter of the spiral body and smaller than the outer diameter of the external thread segment.

[0015] Furthermore, the shortening compensation assembly also includes an outer cover plate connected to the proximal end surface of the shell, the knob is also provided with a rotation indicator, and the proximal end surface of the outer cover plate is provided with a rotation engraved mark used in conjunction with the rotation indicator.

[0016] The present invention also provides a conveying system, comprising a conveyor and the aforementioned supporting device, wherein the supporting device is used to drive the conveyor to move axially to achieve compensation for the shortening of the implant instrument.

[0017] The technical solution of the present invention has the following beneficial effects:

[0018] 1. The support device of the present invention can replace the hand-held method to fix and support the conveyor, thereby eliminating the possibility that the valve cannot be delivered to the predetermined position during the release of the implant device due to factors such as the shaking or movement of the operator's hand during the operation, or the conveyor slipping from the hand.

[0019] 2. The positioning bracket assembly of the support device of the present invention can be fixed on the operating table and has multiple degrees of freedom, which can realize multi-directional adjustment of the conveyor position to adapt to different surgical environments and patients, thereby enhancing the adaptability of the conveyor.

[0020] 3. The support device of the present invention is assembled with the conveyor, which can release the implant while allowing the conveyor as a whole to move axially to achieve shortening compensation. The release and shortening compensation are carried out simultaneously, solving the problem of axial shortening during the valve release process, so that the positioned valve can be accurately released in situ during the release process, simplifying the operation difficulty and reducing the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the conveying system in the first embodiment;

[0022] Figure 2 is a schematic diagram of the three-dimensional structure of the positioning bracket assembly in the first embodiment;

[0023] Figure 3 is an exploded view of the positioning bracket assembly in the first embodiment;

[0024] Figure 4 is a partial cross-sectional view of the positioning bracket assembly in the first embodiment;

[0025] Figure 5 for Figure 4 A partial enlarged view of the

[0026] Figure 6 An exploded view of the shortening compensation assembly in the first embodiment;

[0027] Figure 7 It is a schematic structural diagram of the housing in the first embodiment;

[0028] Figures 8A-8C It is a schematic diagram of the structure of the inner core in the first embodiment at a viewing angle;

[0029] Fig. 9 It is a schematic diagram of the structure of the knob in the first embodiment;

[0030] Fig.10 A schematic diagram of the structure of the inner cover plate in the first embodiment;

[0031] Figures 11A-11B This is a schematic diagram of the outer cover structure in the first embodiment;

[0032] Fig.12 is a cross-sectional view of the shortening compensation assembly in the first embodiment;

[0033] Fig.13This is a schematic diagram of the heart valve structure;

[0034] Fig.14 is a cross-sectional view of the conveyor;

[0035] Fig.15 This is a schematic diagram of the connection between the heart valve and the delivery device;

[0036] Fig.16 This is a schematic diagram of the loading of the heart valve;

[0037] Fig.17 It is an assembly diagram of the release front conveyor and the shortening compensation assembly in the first embodiment;

[0038] Fig.18 It is an assembly diagram of the release rear conveyor and the shortening compensation assembly in the first embodiment;

[0039] Fig.19 It is a schematic assembly diagram of the conveyor and the shortening compensation assembly in the second embodiment;

[0040] Fig. 20 for Fig.19 A magnified partial view of . DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention 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 present invention, so the present invention is not limited by the specific implementation disclosed below.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When an element is connected or disposed inside another element, the entire element may be disposed inside the other element, or a portion of the element may be disposed inside the other element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0044] It should be noted that, for the support device involved in the present invention, the end of the support device that is relatively close to the operator is generally called the "proximal end", and the end of the support device that is relatively far from the operator is called the "distal end", and the "proximal end" and "distal end" of any component of the support device are defined based on this principle. In addition, the conveyor involved in the present invention includes a main body component and an operable button, wherein the operable button can move relative to the main body component to achieve corresponding operations. A component involved in the present invention is fixedly / movably connected to the conveyor, which is defined as the component cannot move relative to the main body component / can move relative to the main body component. When the component is fixedly connected to the operating button, since it can still move relative to the main body component, the component and the conveyor are defined as being movably connected.

[0045] First embodiment

[0046] See also Figure 1 As shown, this embodiment provides a support device 100 for a conveyor 30, including a positioning bracket assembly 10 located at the lower end and a shortening compensation assembly 20 installed at the upper end of the positioning bracket assembly 10. The positioning bracket assembly 10 is used to provide positioning and support for the entire support device 100, and it can be fixed on the operating table fixing frame 40. The shortening compensation assembly 20 is movably connected to the positioning bracket assembly 10, which can be used to compensate for the axial shortening amount during the implant release process, and realize the in-situ release during the implant release process after positioning.

[0047] The support device for the conveyor involved in this embodiment is used for conveying an implantable device. The implantable device can be a heart valve, but it is not limited to a heart valve. It can also be other implantable medical devices with axial shortening such as vascular stents (artificial blood vessels), occluders or filters. Some of the contents of the present invention use the heart valve as an example to illustrate the conveyor and the support device, but it does not constitute a specific limitation on the implantable device.

[0048] See also Figure 2-3As shown, the positioning bracket assembly 10 includes a mounting seat 11, a connecting member 13, a sliding rod 14, a ball joint 15 and a fastening screw 12. The fastening screw 12 includes a first fastening screw 12a, a second fastening screw 12b, a third fastening screw 12c and a fourth fastening screw 12d. Each fastening screw is used to adjust the degree of freedom of the corresponding component to achieve loosening or locking between the components. Specifically, see Figure 3 As shown, the mounting seat 11 includes a fixing portion 111 and a rotating connection portion 112 substantially vertically connected to the fixing portion 111. The fixing portion 111 and the rotating connection portion 112 can be formed as one piece, or can be separately provided and then fixedly assembled together. A concave mounting groove 1111 is provided below the fixing portion 111, and a first fastening screw 12a penetrating the side surface of the concave mounting groove 1111 is provided on one side surface of the concave mounting groove 1111. The first screw 12a is threadedly connected to the fixing portion 111 and can extend into the concave mounting groove 1111. In actual use, the concave mounting groove 1111 of the mounting seat 11 can be clamped on the operating bed fixing bracket 40, and the mounting seat 11 can be fixed on the operating bed fixing bracket 40 by tightening the first fastening screw 12a. When the mounting seat 11 needs to be disassembled, the mounting seat 11 can be separated from the operating bed fixing bracket 40 by simply loosening the first screw 12a.

[0049] The rotating connection part 112 is provided with a mounting hole 1121 for realizing rotational connection with the connecting member 13. On one side of the rotating connection part 112, a second fastening screw 12b is provided along a direction substantially perpendicular to the axis of the mounting hole 1121. The second fastening screw 12b is threadedly connected to the rotating connection part 112. By screwing the second fastening screw 12b, the second fastening screw 12b can be at least partially inserted into the mounting hole 1121. In addition, on the other side of the rotating connection part 112 and along a direction substantially perpendicular to the axis of the mounting hole, a ball pin 16 is provided. At least a portion of the ball pin 16 extends into the mounting hole 1121.

[0050] See also Figure 3-5As shown, a connecting shaft 132 is provided at one end of the connecting member 13, and a connecting groove 131 is provided at the other end. The connecting shaft 132 cooperates with the mounting hole 1121 of the mounting seat 11 to realize the rotation connection between the two. In actual use, the rotation of the connecting shaft 132 relative to the mounting hole 1121 can be controlled by screwing the second fastening screw 12b. An annular groove 1321 is also provided on the connecting shaft 132. When the connecting member 13 is assembled with the mounting seat 11, the annular groove 1321 is directly opposite to the ball pin 16, so that the ball of the ball pin 16 can fall into the annular groove 1321, ensuring that the connecting member 13 can rotate relatively freely when inserted into the mounting seat 11 and the connecting member 13 cannot be easily disengaged from the mounting seat 11. A through hole with a vertical side surface is provided on one side of the connecting groove 131, and a threaded hole coaxial with the through hole is provided on the other side, and the third fastening screw 12c can pass through the through hole and be threadedly connected with the threaded hole.

[0051] Continue to see Figure 3 As shown, the slide bar 14 is a long straight bar with a rectangular cross section, and a through slide groove 141 is provided on one side of the slide bar 14 along the axial direction. When the slide bar 14 is assembled with the connecting member 131, the slide bar 14 as a whole can be inserted into the connecting groove 131 on the connecting member 13, and the third screw 12c can pass through the slide groove 141. When the third screw 12c is loose, the slide bar 14 can slide freely in the connecting groove 131, or rotate with the third screw 12c as the rotation axis, that is, the slide bar 14 can slide relative to the connecting member 13 or rotate relative to the connecting member 13 in the connecting groove 131; when the third fastening screw 12c is tightened, the two sides of the connecting groove 131 can be brought close to each other to clamp the slide bar 14, so that the connecting member 13 and the slide bar 14 remain fixed, and at this time, the two can neither rotate nor slide relative to each other.

[0052] See also Figure 2-3 As shown, a connecting stud 142 is also provided at one end of the slide rod 14, and the connecting stud 142 is threadedly connected to the ball joint 15. The ball joint 15 includes a ball joint base 152 and a ball joint core 151. The ball joint base 152 is cylindrical as a whole, and a threaded hole that cooperates with the connecting stud 142 is provided at its bottom end. A spherical component is provided at one end of the ball joint core 151 to cooperate with the ball joint base to form a ball joint pair, and a ball joint stud is provided at the other end, and the ball joint stud can be threadedly connected to the shortening compensation component 20. A fourth fastening screw 12d is also provided on the ball joint base 152, and the ball joint 15 can be locked by tightening the fourth fastening screw 12d to prevent the ball joint core 151 from rotating relative to the ball joint base 152.

[0053] The positioning bracket assembly 10 in this embodiment has multiple degrees of freedom. Specifically, one end of the connecting member 13 can rotate relative to the mounting seat 11 around the axis direction of the connecting member 13 itself, and the other end can move and rotate relative to the slide bar 14. As for the slide bar 14, it is connected to the shortening compensation assembly 20 through the ball joint 15, so that the shortening compensation assembly 20 can rotate in multiple directions relative to the slide bar 14. Therefore, the positioning bracket assembly 10 used in this embodiment enables the shortening compensation assembly 20 fixedly connected to the ball joint core 151 to have multiple degrees of freedom of movement and rotation in multiple directions relative to the mounting seat 11. After the mounting seat 11 is fixed to the operating bed fixing frame 40, the first fastening screw 12a, the second fastening screw 12b, the third fastening screw 12c and the fourth fastening screw 12d can be loosened simultaneously or partially to adjust the position and angle of the shortening compensation assembly 20 relative to the mounting seat 11 within a certain range. When the adjustment is appropriate, the specific position of the shortening compensation assembly 20 can be determined by tightening the corresponding fastening screws, and the positioning of the shortening compensation assembly 20 is finally achieved.

[0054] See also Figure 6 As shown, the shortening compensation assembly 20 includes an outer shell 21, an inner core 22, a knob 23, an inner cover plate 24, and an outer cover plate 25, wherein the inner core 22, the knob 23, and the inner cover plate 24 can constitute a motion compensation member 60. The outer shell 21 is in a hollow cylindrical shape as a whole, and a central axis AX is defined by the outer shell 21, and the central axis AX also constitutes the central axis of the shortening compensation assembly 20 as a whole. The components of the shortening compensation assembly are described below.

[0055] See also Figure 7 As shown, the shell 21 includes a shell body 211 in a hollow cylindrical structure, and the inner cavity of the shell body 211 constitutes the shell inner cavity. A plane protrusion 217 is provided on the outer periphery of the shell body 211, and a shell threaded hole 218 is provided on the plane protrusion 217. The shell threaded hole 218 is used to achieve threaded connection with the ball hinge core 151 of the ball hinge joint 15. A bottom plate 215 is provided at the far end of the shell inner cavity, and the bottom plate 215 can be flush with the far end surface of the shell body 211. Of course, in other embodiments, the bottom plate is provided in the shell inner cavity at a certain distance from the far end surface of the shell body 211. The bottom plate 215 is also provided with a bottom plate through hole 216 coaxial with the shell body 211, so that the far end of the shell inner cavity is in an open state. Two arc plates 213 evenly distributed in the circumferential direction are provided on the bottom plate 215 near the bottom plate through hole 216, and a shell inner thread 2131 of a certain length is provided on the arc plate 213. The outer periphery of the shell body 211 is further provided with arc-shaped protrusions 214 extending in the axial direction and uniformly distributed along the circumference, and a shell connecting thread 212 is provided on each arc-shaped protrusion 214 .

[0056] In other embodiments, the flat protrusion may not be provided and the outer shell threaded hole may be directly provided on the outer shell body. In addition, the arc-shaped protrusion may not be provided and the outer shell connecting thread 212 may be directly provided on the wall of the outer shell body 211. In addition, the number of the arc-shaped plates 213 is not limited to two, and may be three or four, and evenly distributed along the circumference. In addition, the arc-shaped plate may not be provided, and the inner shell thread may be directly provided on the inner wall of the outer shell body 211.

[0057] See also Figures 8A-8C As shown, the structure of the inner core 22 is described. The inner core 22 includes a first cylindrical portion 222 and a second cylindrical portion 221 connected thereto, and the connecting surface of the two constitutes an outer stepped end face 224. The outer diameter of the first cylindrical portion 222 is smaller than the outer diameter of the second cylindrical portion 221. The first cylindrical portion 222 can cooperate with the bottom plate perforation 216 and slide relatively freely, and the first cylindrical portion 221 can cooperate with the side wall of the inner cavity of the shell 21 and slide relatively. Two waist-shaped holes 223 that cooperate with the arc-shaped plate 213 of the shell 21 are evenly arranged along the circumferential direction on the stepped side surface 221, and the arc-shaped plate 213 can be inserted into the waist-shaped holes 223 and slide with each other. Among them, only two waist-shaped holes 223 are used as an example for description here, but the number of waist-shaped holes is not limited to two, and its number is consistent with the number of arc-shaped plates 213. The inner core cavity 225 of the inner core 22 includes a first inner cavity hole 225a and a second inner cavity hole 225b, and the connection between the first inner cavity hole 225a and the second inner cavity hole 225b forms an inner stepped end surface 227. The first inner cavity hole 225a is a cylindrical hole, and the second inner cavity hole 225 includes a contoured hole 226 that matches the front end of the valve delivery device 30, and the contoured hole 226 can ensure that the valve delivery device 30 cannot rotate relative to each other after the valve delivery device 30 is installed in the shortening compensation component 20. In addition, an inner core threaded hole 228 that penetrates along the axial direction is also provided on the end surface of the first cylindrical portion 222.

[0058] See also Fig. 9 As shown, the knob 23 includes a cylindrical knob body 232 and an outer spiral section 231 arranged at the distal end of the spiral body 232. The outer diameter of the outer thread section 231 is larger than the outer diameter of the cylindrical section 232. The proximal surface of the knob body 232 constitutes the proximal surface of the knob 23, and the distal surface of the outer spiral section 231 constitutes the distal surface of the knob 23. The knob body 232 is provided with a plurality of anti-slip grooves 2322 evenly distributed along the circumference; in addition, a rotation indicator 2321 extending axially is also provided on the outer circumference of the knob body 232. The rotation indicator 2321 can be marked in the form of a pattern or text, or can be provided in the form of a groove on the knob body 232. A plurality of knob grooves 2323 extending a certain distance in the axial direction and evenly distributed in the circumferential direction are also provided on the inner wall of the knob 23. Optionally, the proximal end of the knob groove 2323 is at a certain distance from the proximal surface of the knob 23. See. Figure 13-14As shown, when the knob 23 is assembled with the conveyor 30, the knob groove 2323 cooperates with the protruding structure on the release knob 302 on the conveyor system 30, ensuring that after the conveyor 30 is inserted into the shortening compensation assembly 20, the release knob of the conveyor 30 can be driven to rotate by rotating the knob 23 to achieve the release of the implanted device.

[0059] See also Figures 8A-8C As shown in Figures 1 and 12, when the shortening compensation assembly 20 is assembled, the arc plate 213 of the outer shell 21 enters the inner cavity of the inner core 22 through the waist-shaped hole 223 of the inner core 22. The outer thread section 231 of the knob 23 cooperates with the inner thread 2131 of the outer shell provided on the arc plate 213, and the distal end surface of the knob 23 abuts against the inner step end surface 227 of the inner core 22. In this way, when the knob 23 is turned, the knob 23 rotates and moves axially in the inner cavity of the inner core 22. When the knob 23 moves axially in the distal direction, since the distal end surface of the knob 23 abuts against the inner step end surface 227 of the inner core 22, the knob 23 pushes the inner core 22, thereby causing the inner core 22 and the knob 23 to move in the distal direction together.

[0060] See also Fig.10 As shown, the inner cover plate 24 is a circular gasket structure, having a first symmetry axis AX1 along the radial direction and a second symmetry axis AX2 perpendicular to the first symmetry axis and along the radial direction. The intersection of the first symmetry axis AX1 and the second symmetry axis AX2 is the center of the inner cover plate 24. The outer diameter of the inner cover plate 24 is equivalent to the outer diameter of the second cylindrical portion 221 of the inner core 22. The inner cover plate 24 includes a plurality of inner cover plate through holes 241 evenly distributed along the circumferential direction. In addition, an inner hole is also provided at the center position of the inner cover plate 24, and the inner hole includes two arc segments 243 symmetrically distributed along the first symmetry axis AX1 and two waist-shaped segments 242 symmetrically distributed along the second symmetry axis AX2. The two ends of the two arc segments 243 are respectively connected to the two ends of the two waist-shaped segments 242 to form a closed inner hole structure. Among them, the curvature diameter of the two arc segments 243 is greater than or equal to the outer diameter of the knob body 232 of the knob 23, but less than the outer diameter of the external thread segment 231 of the knob body 232. The shape of the waist-shaped section 242 matches the outer peripheral shape of the arc-shaped plate 213 of the housing.

[0061] Continue to see Fig.12As shown, when the shortening compensation assembly 20 is assembled, the distal end surface of the inner cover plate 24 fits the proximal end surface of the inner core 22, and the connecting member can pass through the inner cover plate through hole 241 and the inner core threaded hole 228 of the inner core 22 to fix the inner cover plate 24 with the inner core 22. The connecting member in this embodiment can be a bolt or a screw. The shape of the waist-shaped section 242 matches the outer circumferential size of the arc plate 213 of the shell 21, so that the arc plate 213 can pass through the inner cover plate 24 and slide relatively. Among them, since the curvature diameter of the two annular sections 243 is greater than or equal to the outer diameter of the knob body 232 of the knob 23, but smaller than the outer diameter of the outer thread section 231 of the knob body 232, the knob 23 can slide relative to the inner cover plate 24, but due to the blocking of the two annular sections 243 to the outer thread section 231, the knob 23 cannot slide out of the inner cover plate 23. Therefore, the inner cover plate 24 can axially limit the knob 23 in the proximal direction to prevent the knob 23 from being separated from the assembly formed by the inner core 22 and the inner cover plate 24 .

[0062] See also Figures 11A-11B As shown, the outer cover plate 25 is an end cover structure that is consistent with the cross-sectional shape of the distal end of the housing 21. The outer cover plate 25 is installed at the distal end of the housing 21, so as to axially limit the components installed in the inner cavity of the housing 21 to prevent them from escaping from the inner cavity. The distal surface of the outer cover plate 25 is provided with two outer cover plate waist-shaped holes 255 that match the arc plate 213 of the housing 21, and the proximal end of the arc plate 213 can extend into the outer cover plate waist-shaped holes. The proximal surface of the outer cover plate 25 is provided with a rotation mark 254 extending in the radial direction. The rotation mark 254 is used in conjunction with the rotation indicator 2321 on the outer periphery of the knob body 232 to mark the rotation angle of the knob 23. The center of the outer cover plate 25 is also provided with an outer cover plate central through hole 253 that matches the outer side surface of the knob body 232, so that the knob 23 can be exposed and rotate freely in the outer cover plate through hole 253. In addition, the outer cover plate 25 is also provided with a plurality of outer cover plate through holes 251 on the outer periphery of the end surface, which cooperate with the shell connecting threads 212. During the assembly process, the connector can pass through the outer cover plate through holes 251 and the shell connecting threads 212 to achieve a fixed connection between the outer cover plate 24 and the shell 21.

[0063] In other embodiments, the outer cover plate may not be provided, and the outer cover plate is not necessary for realizing the shortening compensation function in this embodiment.

[0064] See also Fig.12As shown, in this embodiment, the knob 23 can be first assembled in the inner core 22, the inner cover plate 24 can be assembled on the end surface of the inner core 22, and bolts or screws are used to fix the inner cover plate 24 and the inner core 22 to form a motion compensation component 60, which can be linked as a whole. Among them, the inner cover plate 24 is used to axially limit the knob 23, and the knob 23 is confined in the cavity formed by the inner wall of the inner core 22 and the inner cover plate 24, so that the knob 23 can move in the cavity and cannot be separated from the cavity. After the inner core 22, the knob 23, and the inner cover plate 24 are assembled to form the motion compensation component 60, the motion compensation component 60 is installed in the outer shell 21, and the arc plate 213 of the outer shell 21 passes through the waist-shaped hole 223 of the inner core 22, and the knob outer thread section 231 of the knob 23 is threadedly matched with the outer shell inner thread 2131 set on the arc plate 213, and finally the outer cover plate 24 is assembled on the end face of the outer shell 21 by a threaded connection method to confine the motion compensation component in the outer shell 21. Among them, the knob 23 and the outer shell 21 form a threaded connection. By rotating the knob 23, the entire motion compensation component is driven to move axially in the outer shell 21, and the inner core 22 is fixedly connected to the valve conveyor 30, which can drive the valve conveyor 30 to move in the axial direction to achieve valve shortening compensation. See Fig.13 As shown, the implant device structure of this embodiment is described, and a heart valve 50 is used as an example for description. The heart valve 50 includes a valve body 51 and a valve connector 52 connected to the end of the valve body 51. The valve body 51 is a self-expanding artificial valve, which can be expanded and restored after being contracted into the delivery sheath and released from the delivery sheath. The valve connector 52 is a columnar structure with an internal thread, which can be threadedly connected to the delivery device 30.

[0065] See also Fig.14As shown, the structure of the conveyor 30 is briefly described. The conveyor can be used to convey implantable devices including but not limited to heart valves. The conveyor 30 mainly includes a handle assembly 301, a loading tube assembly 304, a connecting rod 303 and a release knob 302. The handle assembly 301 is the outer shell of the conveyor 30, and has a cavity inside, which is used for the operator to hold during the conveying process. The proximal end of the connecting rod 303 is fixedly connected to the handle assembly 301, and the distal end has a connecting structure 3031. When the connecting structure 3031 is an external thread structure, it can be threadedly connected with the internal thread structure of the valve connector 52. Of course, the connecting structure 3031 is not limited to a thread structure, but can also be other connecting structures, such as a shape-matching convex groove structure, in which case the valve connector is also provided with a shape-matching structure that matches the connecting structure 3031. The release knob 302 is arranged on the handle assembly 301 and can rotate along the central axis of the handle assembly 301, and an internal thread structure (not shown) is arranged on its inner side wall. The loading tube assembly 304 is sleeved on the outside of the connecting rod 303, and has a tail end joint 3041 at its proximal end, and the tail end joint 3041 is provided with an external thread structure (not shown in the figure) that matches the internal thread structure of the release knob 302. In addition, the tail end joint 3041 is slidably connected to the handle assembly 301, that is, the handle assembly 301 performs rotation limiting on the tail end joint 3041, so that it can only move axially relative to the handle assembly 301 but cannot rotate. When the release knob 302 is rotated, the loading tube assembly 304 can move along the axial direction.

[0066] As shown in FIGS. 14-15 , when the heart valve is loaded, the release knob 302 is first turned to move the loading tube assembly 304 backward to expose the connecting structure 3031 of the connecting rod 303, and then the valve connector 52 of the heart valve 50 is fixedly connected to the connecting structure 3031. Fig.16 Then, the release knob 302 is rotated to move the loading tube assembly 304 forward relative to the handle assembly 301 until the valve is completely received in the loading tube assembly 301, and the loading of the valve is completed; when the valve is released, the delivery system 30 is adjusted to a suitable implantation position and direction, the handle assembly 301 of the delivery system is fixed, and then the release knob 302 is rotated to withdraw the loading tube assembly 304. At this time, the valve will gradually be exposed from the loading tube assembly 304 as the loading tube assembly 304 withdraws, and the part of the valve that is gradually exposed from the loading tube assembly 304 will expand until the valve is completely separated from the loading tube assembly 304. Finally, the connection between the connecting rod 303 and the valve is released, and the valve is released.

[0067] The following is an explanation of the use of the support device for the conveyor involved in this embodiment. In actual use, by tightening the fastening screw 1, the mounting base 11 is fixed to the operating bed bracket 40, so that the positioning bracket assembly 1 is fixed to the operating bed, and the fastening screws 2, 3, and 4 can be in a loose state. At this time, the various components of the positioning bracket assembly 1 can move relative to each other; the conveyor 30 with the pre-installed valve is assembled into the shortening compensation assembly 20. At this time, the release knob 302 of the conveyor 30 is fixedly connected to the knob of the shortening compensation assembly 20 and the two rotate together. The front end of the conveyor 30 is fixedly connected to the inner core 22, and the two cannot rotate relative to each other. The relative position of the conveyor 30 and the shortening compensation assembly 20 is as shown in FIG. Fig.14 As shown, at this time, the inner core 22 and the knob 23 are in the first position relative to the outer shell 21. Then the outer shell 21 of the shortening compensation component 20 is threadedly connected to the ball joint seat on the positioning bracket component 1. Of course, in other ways, the shortening compensation component 20 can also be connected to the positioning bracket component 10 first, and then the conveyor 30 and the shortening compensation component 20 are assembled. After the conveyor 30 and the conveying device 100 are assembled, according to the actual surgical position requirements, the position of the conveyor can be repeatedly adjusted to adjust the valve release position. After the adjustment is completed, the components of the positioning bracket component 1 and their relative positions with the shortening compensation component are fixed by tightening the fastening screws 2, 3, and 4 to finally achieve the positioning of the conveyor 20. During the operation, the operator rotates the knob 23 under the monitoring of the monitoring device. As the external thread section 231 on the knob 23 rotates relative to the inner shell thread 2131 set on the outer shell 21, the inner core 22 and the knob 23 move to the second position relative to the outer shell 21. Among them, the second position is a position closer to the distal end relative to the first position. Specifically, as the knob 23 rotates, on the one hand, the handle of the conveyor 30 fixedly connected to the inner core 22 will be pushed to move axially toward the distal end as a whole, so as to achieve compensation for the shortening of the valve; on the other hand, since the knob 23 is fixedly connected to the release knob 302 of the conveyor 30, the rotation of the knob 23 will drive the rotation of the release knob 302, so as to achieve the withdrawal of the sheath tube to release the heart valve. Specifically, it is assumed that when the heart valve is fully released, the outer sheath tube is withdrawn relative to the handle by a distance of L1, and the shortening amount of the valve is L2. As the knob 23 rotates, the outer sheath tube slowly withdraws relative to the handle, and the conveyor system (including the handle, the outer sheath tube and the heart valve) as a whole also moves distally. When the outer sheath tube is withdrawn relative to the handle by a distance of L1, the conveyor system as a whole moves distally by a distance of L2, thereby achieving the release of the valve from the conveyor 30 while the conveyor 30 as a whole moves axially to achieve compensation for shortening, and finally achieving the rapid in-situ release of the valve. After release, the positions of the inner core 22 and the knob 23 relative to the outer shell 21 can be as follows: Fig.15 As shown. Among them, Figure 14-15This is merely an exemplary description and does not imply that in actual operation, the inner core and the knob can only be in this position relative to the outer shell before and after the valve is released. That is, the above exemplary description does not constitute a specific limitation on this embodiment.

[0068] In other embodiments, the motion compensation member may only include a knob. In this case, the outer thread of the knob may cooperate with the inner thread provided on the housing wall. In this case, when the knob is rotated, the rotation of the conveyor may be limited by hand or other mechanisms and the conveyor may move axially with the knob. In other embodiments, the motion compensation member may include a knob and an inner core without an inner cover plate.

[0069] Second embodiment

[0070] The structure of the supporting device in this embodiment is basically the same as that of the supporting device in the first embodiment, and the only difference is the structure of the knob.

[0071] See also Fig.16As shown, after the conveyor 30 is loaded into the shortening compensation assembly (the housing, inner cover plate, outer cover plate and other components are omitted), the release knob of the conveyor 30 cooperates with the knob 23a, and the distal end surface of the knob 23a can abut against the proximal end surface of the inner core 22. At this time, the protrusion on the release knob cooperates with the knob groove 2323a in the knob 23a, and the knob 23a can drive the release knob to rotate together. In order to axially limit the conveyor 30, a limiting member 233a is provided at the proximal end of the knob groove 2323a. When the release knob of the conveyor and the knob 23a are installed in place in the axial direction, the limiting member 233a will axially limit the proximal end surface of the release knob, so that the conveyor 30 and the shortening compensation assembly will not be loosened in the axial direction. The limiting member 233a can be a wedge-shaped protrusion structure or a wedge-shaped buckle structure, and at least one is provided in the circumferential direction. Specifically, the stopper 233a has a guide slope 2331a on the proximal side. When the release knob of the conveyor 30 enters the knob 23a, the release knob can slide along the guide slope 2331a to the highest point of the stopper 233a and pass over the stopper 233a, so that the knob 23a smoothly enters the knob groove 2323a. In the assembly process, the knob 23a can be deformed as a whole, that is, its inner diameter can be enlarged to achieve smooth installation of the conveyor 30. In other embodiments, the stopper 233a itself can also be deformed, and the stopper 233a can be compressed during the installation of the conveyor 30 so that the release knob can smoothly enter the knob 23a. In other embodiments, the knob 23a can be deformed as a whole and the release member 233a can also be deformed at the same time to reduce the difficulty of assembling the conveyor and the knob 23a. When the release knob of the conveyor and the knob 23a are axially installed in place, the distal end side of the limiter 233a will axially limit the proximal end face of the release knob. In other embodiments, the distal end side of the limiter 233a also has an inclined surface so that the subsequent conveyor can smoothly exit from the knob 23a.

[0072] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. The protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A support device for a conveyor, wherein the conveyor is used to convey an implant device, characterized in that: include: Positioning bracket assembly; A shortening compensation assembly comprises a housing and a motion compensation member, wherein the housing is connected to the positioning bracket assembly; The motion compensation component is used to load the conveyor, and the motion compensation component drives the conveyor to move axially relative to the housing to achieve compensation for the shortening of the implant instrument.

2. The support device for a conveyor according to claim 1, characterized in that: The housing is provided with an inner housing thread, and the motion compensation component comprises a knob, wherein the knob is provided with an outer thread section matching with the inner housing thread.

3. The support device for a conveyor according to claim 2, characterized in that: A plurality of knob grooves evenly distributed along the circumferential direction are arranged inside the knob, and the knob grooves are engaged with the implantation device release knob of the conveyor.

4. The support device for a conveyor according to claim 3, characterized in that: The proximal end of the knob groove is also provided with at least one limiting member distributed along the circumferential direction.

5. The support device for a conveyor according to claim 2, characterized in that: At least two arc-shaped plates evenly distributed along the circumference are arranged inside the shell, and the inner threads of the shell are arranged on the arc-shaped plates.

6. The support device for a conveyor according to claim 5, characterized in that: The motion compensation component also includes an inner core movably connected to the outer shell, the inner core having an inner core cavity, the inner core cavity being connected to the conveyor, the end face of the inner core being provided with a waist-shaped hole matching with the arc plate, at least two of the arc plates being able to pass through the waist-shaped hole into the inner core cavity, the distal end face of the knob abutting against the inner core cavity to push the inner core to move.

7. The support device for a conveyor according to claim 6, characterized in that: The inner core cavity has an inner step end surface, and the distal end surface of the knob abuts against the inner step end surface.

8. The support device for a conveyor according to claim 6, characterized in that: The inner core cavity has a profiled hole, and the profiled hole cooperates with the conveyor to limit the rotation of the conveyor.

9. The support device for a conveyor according to claim 6, characterized in that: The knob includes a spiral body arranged at the proximal end of the external thread segment, and the motion compensation component also includes an inner cover plate connected to the proximal end surface of the inner core, the inner cover plate has a center hole for the arc plate and the spiral body to pass through, and the center hole includes two circular arc segments symmetrically arranged along the circumferential direction, and the curvature radius of the circular arc segment is greater than or equal to the outer diameter of the spiral body and smaller than the outer diameter of the external thread segment.

10. The support device for a conveyor according to claim 2, characterized in that: The shortening compensation component also includes an outer cover plate connected to the proximal end surface of the shell, the knob is also provided with a rotation indicator, and the proximal end surface of the outer cover plate is provided with a rotation engraved mark used in conjunction with the rotation indicator.

11. A conveying system, comprising a conveyor and a supporting device according to any one of claims 1 to 10, characterized in that: The supporting device is used to drive the conveyor to move axially to achieve compensation for the shortening of the implant instrument.

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