A support device for a conveyor

Abstract

The present application relates to a kind of support device for conveyor, the conveyor is used to transport implant instrument, comprising: positioning support assembly;Short compensation component, including shell and motion compensation component, the shell is connected with the positioning support assembly;The motion compensation component is used to load the conveyor, it can be axially moved relative to the shell to achieve short compensation to the implant instrument;The conveying device involved in the present application can solve the problem of axial size shortening in the process of valve release, so that the valve after positioning can be accurately released in situ during release.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a support device for a delivery system. Background Technology

[0002] The human heart has four chambers, each with its own "exit," and four valves (mitral, aortic, pulmonary, and tricuspid valves). These valves ensure that blood pumped by the heart flows in the cardiovascular system in a designated direction. The mitral valve is located between the left atrium and the left ventricle. A normal mitral valve ensures that blood circulates unidirectionally from the left atrium to the left ventricle. However, when the mitral valve becomes diseased, it can become abnormally narrowed or dilated, or allow blood to flow back from the left ventricle into the left atrium. Damage to mitral valve function can impair normal heart function, leading to gradual weakness or even death.

[0003] To address mitral valve dysfunction, less invasive transcatheter techniques have been developed for delivering replacement mitral valve assemblies. In these techniques, a self-expanding prosthetic valve is typically mounted in a coiled state at the end of a flexible catheter and advanced through the patient's blood vessels or body until it reaches the implantation site. The prosthetic valve is then released and expands to its functional size at the site of the defective natural mitral valve.

[0004] However, during the release process, the valve expands in the radial direction and shortens in the axial direction due to the sheath retraction, which causes a deviation between the actual release position and the predetermined position. This increases the difficulty of precise valve release, leading to increased surgical difficulty and longer operation time. Summary of the Invention

[0005] Therefore, it is necessary to address the problem of low valve release accuracy caused by axial dimensional shortening during valve release. This necessitates providing a support device for a delivery system to solve the axial dimensional shortening problem during valve release, enabling precise in-situ release of the positioned valve. Specifically, the system provides: 1. A support device for a delivery system, wherein the delivery system is used to transport implantable devices, characterized in that it includes: a positioning support assembly;

[0006] A shortening compensation assembly includes a housing and a motion compensation member, the housing being connected to the positioning support assembly; the motion compensation member is used to load the delivery device, and the motion compensation member drives the delivery device to move axially relative to the housing to achieve shortening compensation for the implantable device.

[0007] Furthermore, the outer casing is provided with an internal thread, and the motion compensation component includes a knob, the knob being provided with an external thread section that mates with the internal thread of the outer casing.

[0008] Furthermore, the knob is provided with a plurality of knob grooves evenly distributed along the circumference, and the knob grooves engage with the implantation device release knob of the delivery device.

[0009] Furthermore, at least one circumferentially distributed limiting member is provided at the near end of the knob groove.

[0010] Furthermore, the interior of the outer casing is provided with at least two arc-shaped plates evenly distributed along the circumference, and the arc-shaped plates are provided with the internal threads of the outer casing.

[0011] Furthermore, the motion compensation component also includes an inner core movably connected to the outer shell. The inner core has an inner core cavity, which is connected to the conveyor. The end face of the inner core is provided with a waist-shaped hole that mates with the arc-shaped plate. At least two of the arc-shaped plates can pass through the waist-shaped hole and enter the inner core cavity. 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 face, and the distal end face of the knob abuts against the inner stepped end face.

[0013] Furthermore, the inner core cavity has a contoured hole that cooperates with the conveyor to restrict the rotation of the conveyor.

[0014] Furthermore, the knob includes a helical body disposed near the proximal end of the external thread section, and the motion compensation component further includes an inner cover plate connected to the proximal end face of the inner core. The inner cover plate has a central hole through which the arc plate and the helical body pass. The central hole includes two circumferentially symmetrically arranged arc segments, the radius of curvature of which is greater than or equal to the outer diameter of the helical body but less than the outer diameter of the external thread section.

[0015] Furthermore, the shortening compensation assembly also includes an outer cover plate connected to the near end face of the housing, the knob is also provided with a rotation indicator, and the near end face of the outer cover plate is provided with a rotation mark that cooperates with the rotation indicator.

[0016] The present invention also provides a delivery system, including a delivery device and the aforementioned support device, wherein the support device is used to drive the delivery device to move axially to achieve shortening compensation of the implanted device.

[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 for fixing and supporting the delivery device, and eliminate the possibility that the valve cannot be delivered to the predetermined position during the release of the implantation device due to factors of the hand-held method (such as the operator's hand shaking or moving during the operation, or the delivery device 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 position of the delivery device to adapt to different surgical environments and patients, thereby enhancing the adaptability of the delivery device.

[0020] 3. The support device and delivery device of the present invention can be assembled to allow the delivery device to move axially while releasing the implant to achieve shortening compensation. Release and shortening compensation are carried out simultaneously, solving the problem of axial dimensional shortening during valve release. This allows the valve to be accurately released in situ after positioning, simplifying the operation and reducing the operation time. Attached Figure Description

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

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

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

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

[0025] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0026] Figure 6 This is an exploded view of the shortening compensation component in the first embodiment;

[0027] Figure 7 This is a schematic diagram of the outer shell in the first embodiment;

[0028] Figures 8A-8C This is a schematic diagram of the inner core from one viewpoint in the first embodiment;

[0029] Figure 9 This is a schematic diagram of the knob in the first embodiment;

[0030] Figure 10 Schematic diagram of the inner cover plate structure in the first embodiment;

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

[0032] Figure 12 This is a cross-sectional view of the shortening compensation component in the first embodiment;

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

[0034] Figure 14 This is a cross-sectional view of the conveyor;

[0035] Figure 15 This is a schematic diagram showing the connection between the heart valve and the delivery device.

[0036] Figure 16 This is a schematic diagram of the loading of heart valves;

[0037] Figure 17 This is an assembly diagram of the pre-release conveyor and the shortening compensation assembly in the first embodiment;

[0038] Figure 18 This is an assembly diagram of the release conveyor and the shortening compensation component in the first embodiment;

[0039] Figure 19 This is a simplified assembly diagram of the conveyor and the shortening compensation component in the second embodiment;

[0040] Figure 20 for Figure 19 A magnified view of a portion of the image. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When an element is connected to or set inside another element, it can be that the entire element is set inside the other element, or a portion of the element is set 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 possible implementations.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] It should be noted that, regarding the support device involved in this invention, the end of the support device relatively closer to the operator is generally referred to as the "proximal end," and the end of the support device relatively farther from the operator is referred to as the "distal end." Based on this principle, the "proximal end" and "distal end" of any component of the support device are defined. Furthermore, the conveyor involved in this 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 operation. A component involved in this invention that is fixedly / movably connected to the conveyor is defined as a component that cannot move relative to the main body component or can move relative to it. 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 movablely connected.

[0045] First Embodiment

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

[0047] The support device for the delivery device involved in this embodiment is described, and the delivery device 30 is used to deliver the implantable device. The implantable device can specifically be a heart valve, but it is not limited to heart valves; it can also be other implantable medical devices with axial shortening, such as vascular stents (artificial blood vessels), occluders, or filters. Some content in this invention uses a heart valve as an example to describe the delivery device and support device, but this does not constitute a specific limitation on the implantable device.

[0048] See Figure 2-3As shown, the positioning bracket assembly 10 includes a mounting base 11, a connector 13, a slide rod 14, a ball joint 15, and fastening screws 12. The fastening screws 12 include 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, achieving loosening or locking between the components. For details, see [link to documentation]. Figure 3 As shown, the mounting base 11 includes a fixing part 111 and a rotating connecting part 112 that is substantially perpendicularly connected to the fixing part 111. The fixing part 111 and the rotating connecting part 112 can be integrally formed or separately formed and then fixedly assembled together. A concave mounting groove 1111 is provided below the fixing part 111, and a first fastening screw 12a is provided on one side of the concave mounting groove 1111, penetrating this side. The first screw 12a is threadedly connected to the fixing part 111 and can extend into the concave mounting groove 1111. In actual use, the concave mounting groove 1111 of the mounting base 11 can be snapped onto the operating table fixing bracket 40, and the mounting base 11 can be fixed to the operating table fixing bracket 40 by tightening the first fastening screw 12a. When it is necessary to disassemble the mounting base 11, simply loosen the first screw 12a to separate the mounting base 11 from the operating table fixing bracket 40.

[0049] The rotary connector 112 is provided with a mounting hole 1121 for rotatably connecting with the connector 13. On one side of the rotary connector 112, a second fastening screw 12b is provided along the direction substantially perpendicular to the axis of the mounting hole 1121. The second fastening screw 12b is threadedly connected to the rotary connector 112, and by tightening the second fastening screw 12b, it can be at least partially inserted into the mounting hole 1121. In addition, on the other side of the rotary connector 112 and along the direction substantially perpendicular to the axis of the mounting hole, a ball pin 16 is provided, and at least a portion of the ball pin 16 extends into the mounting hole 1121.

[0050] See Figure 3-5As shown, the connector 13 has a connecting shaft 132 at one end and a connecting groove 131 at the other end. The connecting shaft 132 engages with the mounting hole 1121 of the mounting base 11 to achieve a rotatable connection. In actual use, the rotation of the connecting shaft 132 relative to the mounting hole 1121 can be controlled by turning the second fastening screw 12b. An annular groove 1321 is also provided on the connecting shaft 132. When the connector 13 is assembled with the mounting base 11, the annular groove 1321 is aligned with the ball pin 16, allowing the ball of the ball pin 16 to fall into the annular groove 1321, ensuring that the connector 13 can rotate freely relative to the mounting base 11 when inserted, and preventing the connector 13 from easily detaching from the mounting base 11. A through hole with a vertical side 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. The third fastening screw 12c can pass through the through hole and be threadedly connected to the threaded hole.

[0051] See also Figure 3 As shown, the slide rod 14 is a long straight rod with a rectangular cross-section. A through groove 141 along the axial direction is provided on one side of the slide rod 14. When the slide rod 14 is assembled with the connector 131, the slide rod 14 as a whole can be inserted into the connecting groove 131 on the connector 13, and the third screw 12c can pass through the groove 141. When the third screw 12c is loose, the slide rod 14 can slide freely within the connecting groove 131, or it can rotate with the third screw 12c as its axis of rotation. That is, within the connecting groove 131, the slide rod 14 can slide or rotate relative to the connector 13. When the third fastening screw 12c is tightened, the two sides of the connecting groove 131 come closer together and clamp the slide rod 14, keeping the connector 13 and the slide rod 14 fixed. At this time, the two cannot rotate or slide relative to each other.

[0052] See Figure 2-3 As shown, a connecting stud 142 is provided at one end of the slide rod 14, which 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 in shape, and its bottom end is provided with a threaded hole that mates with the connecting stud 142. One end of the ball joint core 151 is provided with a spherical member that mates with the ball joint base to form a ball joint pair, and the other end is provided with a ball joint stud, which can be threadedly connected to the shortening compensation component 20. A fourth fastening screw 12d is also provided on the ball joint base 152, which can lock the ball joint 15 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 connector 13 can rotate relative to the mounting base 11 about its own axis, and the other end can move and rotate relative to the slide rod 14. The slide rod 14 is connected to the shortening compensation assembly 20 through a ball joint 15, allowing the shortening compensation assembly 20 to rotate relative to the slide rod 14 in multiple directions. Therefore, the positioning bracket assembly 10 used in this embodiment allows the shortening compensation assembly 20, which is fixedly connected to the ball joint core 151, to have multiple degrees of freedom of movement and rotation relative to the mounting base 11. After the mounting base 11 is fixed to the operating table 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 base 11 within a certain range. After proper adjustment, the specific position of the shortening compensation assembly 20 can be determined by tightening the corresponding fastening screws, ultimately achieving the positioning of the shortening compensation assembly 20.

[0054] See Figure 6 As shown, the shortening compensation assembly 20 includes a housing 21, an inner core 22, a knob 23, an inner cover plate 24, and an outer cover plate 25. The inner core 22, knob 23, and inner cover plate 24 constitute a motion compensation component 60. The housing 21 is generally hollow and cylindrical. A central axis AX is defined by the housing 21, which also forms the central axis of the entire shortening compensation assembly 20. The components of the shortening compensation assembly are described below.

[0055] See Figure 7 As shown, the outer casing 21 includes a hollow cylindrical casing body 211, the inner cavity of which forms the inner cavity of the casing. A planar protrusion 217 is provided on the outer periphery of the casing body 211, and a casing threaded hole 218 is provided on the planar protrusion 217. This casing threaded hole 218 is used to achieve a threaded connection with the ball joint core 151 of the ball joint 15. A base plate 215 is provided at the distal end of the inner cavity of the casing, and this base plate 215 can be flush with the distal end face of the casing body 211. Of course, in other embodiments, the base plate is located at a certain distance from the distal end face of the casing body 211 within the inner cavity of the casing. The base plate 215 also has a base plate through hole 216 coaxial with the casing body 211, so that the distal end of the inner cavity of the casing is in an open state. Near the base plate through hole 216 on the base plate 215, two arc-shaped plates 213 evenly distributed in the circumferential direction are provided, and a certain length of casing internal thread 2131 is provided on the arc-shaped plates 213. The outer periphery of the outer shell body 211 is also provided with arc-shaped protrusions 214 that extend axially and are evenly distributed along the circumference, and each arc-shaped protrusion 214 is provided with a shell connection thread 212.

[0056] In other embodiments, the threaded hole of the outer casing may be directly provided on the outer casing body without providing a planar protrusion. Alternatively, the outer casing connecting thread 212 may be directly provided on the wall of the outer casing body 211 without providing an arc-shaped protrusion. Furthermore, the number of arc-shaped plates 213 is not limited to two; it may also be three or four, and they may be evenly distributed along the circumference. Alternatively, the arc-shaped plates may be omitted, and the inner thread of the outer casing may be directly provided on the inner wall of the outer casing body 211.

[0057] See Figures 8A-8C The structure of the inner core 22 is described below. The inner core 22 includes a first cylindrical portion 222 and a second cylindrical portion 221 connected thereto, the connecting surface of which forms 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 slide freely relative to the bottom plate through hole 216, and the first cylindrical portion 221 can slide relative to the inner wall of the outer shell 21. Two waist-shaped holes 223 are evenly distributed along the circumferential direction on the stepped side surface 221, which mate with the arc-shaped plates 213 of the outer shell 21. The arc-shaped plates 213 can be inserted into the waist-shaped holes 223 and slide relative to each other. Here, only two waist-shaped holes 223 are used as an example for description, but the number of waist-shaped holes is not limited to two, and their 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 face 227. The first inner cavity hole 225a is a cylindrical hole, and the second inner cavity hole 225 includes a contoured hole 226 that mates with the front end of the valve delivery device 30. This contoured hole 226 ensures that the valve delivery device 30 and the shortening compensation component 20 cannot rotate relative to each other after they are installed. In addition, an axially penetrating inner core threaded hole 228 is also provided on the end face of the first cylindrical portion 222.

[0058] See Figure 9 As shown, the knob 23 includes a cylindrical knob body 232 and an outer spiral section 231 located at the distal end of the spiral body 232. The outer diameter of the outer spiral section 231 is larger than the outer diameter of the cylindrical section 232. The proximal end face of the knob body 232 constitutes the proximal end face of the knob 23, and the distal end face of the outer spiral section 231 constitutes the distal end face of the knob 23. The knob body 232 is provided with multiple anti-slip textures 2322 evenly distributed along its circumference. Additionally, a rotation indicator 2321 extending axially is provided on the outer periphery of the knob body 232. The rotation indicator 2321 can be marked with patterns or text, or it can be provided in the form of a groove on the knob body 232. Multiple knob grooves 2323 extending axially for a certain distance and evenly distributed circumferentially are also provided on the inner wall of the knob 23. Optionally, the proximal end of the knob groove 2323 is a certain distance from the proximal end face of the knob 23. See also... Figure 13-14As shown, when the knob 23 is assembled with the delivery device 30, the knob groove 2323 cooperates with the protruding structure on the release knob 302 on the delivery device system 30, ensuring that after the delivery device 30 is installed with the shortening compensation component 20, the release knob of the delivery device 30 can be rotated by rotating the knob 23 to release the implanted device.

[0059] See Figures 8A-8C As shown in Figure 12, after the shortening compensation component 20 is assembled, the arc-shaped plate 213 of the outer shell 21 enters the inner cavity of the inner core 22 through the waist-shaped hole 223. The external thread section 231 of the knob 23 engages with the internal thread 2131 of the outer shell provided on the arc-shaped plate 213, and the distal end face of the knob 23 abuts against the inner stepped end face 227 of the inner core 22. Thus, when the knob 23 is rotated, the knob 23 will rotate and move axially within the inner cavity of the inner core 22. When the knob 23 moves axially in the distal direction, since the distal end face of the knob 23 abuts against the inner stepped end face 227 of the inner core 22, the knob 23 will push the inner core 22, thereby causing the inner core 22 and the knob 23 to move together in the distal direction.

[0060] See Figure 10 As shown, the inner cover plate 24 is a circular gasket structure with a first radial axis of symmetry AX1 and a second radial axis of symmetry AX2 perpendicular to the first axis of symmetry. The intersection of the first axis of symmetry AX1 and the second axis of symmetry AX2 is the center of the inner cover plate 24. The outer diameter of the inner cover plate 24 is approximately equal 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 provided at the center of the inner cover plate 24, which includes two arc segments 243 symmetrically distributed along the first axis of symmetry AX1 and two waist-shaped segments 242 symmetrically distributed along the second axis of symmetry 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. 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 smaller than the outer diameter of the external threaded section 231 of the knob body 232. The shape of the waist-shaped section 242 matches the outer periphery shape of the arc-shaped plate 213 of the outer shell.

[0061] See also Figure 12As shown, after the shortening compensation component 20 is assembled, the distal end face of the inner cover plate 24 fits against the proximal end face of the inner core 22, and the connecting component can pass through the through hole 241 of the inner cover plate and the threaded hole 228 of the inner core 22 to fix the inner cover plate 24 and the inner core 22 together. In this embodiment, the connecting component can be a bolt or a screw. The shape of the waist-shaped segment 242 matches the outer circumferential dimensions of the arc plate 213 of the outer shell 21, so that the arc plate 213 can pass through the inner cover plate 24 and slide relative to it. Among them, since the curvature diameter of the two annular segments 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 external threaded segment 231 of the knob body 232, the knob 23 can slide relative to the inner cover plate 24, but due to the obstruction of the external threaded segment 231 by the two annular segments 243, 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 detaching from the assembly formed by the inner core 22 and the inner cover plate 24.

[0062] See Figure 11A-11B As shown, the outer cover 25 is an end cap structure that matches the cross-sectional shape of the distal end of the outer casing 21. The outer cover 25 is installed at the distal end of the outer casing 21, thereby axially limiting the components installed within the inner cavity of the outer casing 21 and preventing them from detaching from the cavity. The distal end face of the outer cover 25 has two waist-shaped holes 255 that match the arcuate plate 213 of the outer casing 21, and the proximal end of the arcuate plate 213 can extend into these waist-shaped holes. The proximal end face of the outer cover 25 is provided with a radially extending rotation mark 254, which works in conjunction with a 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 25 also has a central through hole 253 that mates with the outer surface of the knob body 232, allowing the knob 23 to be exposed and rotate freely within the through hole 253. In addition, the outer cover plate 25 is provided with multiple outer cover plate through holes 251 on the outer periphery of its end face, which mate with the outer shell connecting thread 212. During assembly, the connecting parts can pass through the outer cover plate through holes 251 and the outer shell connecting thread 212 to achieve a fixed connection between the outer cover plate 24 and the outer shell 21.

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

[0064] See Figure 12As shown, in this embodiment, the knob 23 can be first assembled inside the inner core 22, and the inner cover plate 24 can be assembled on the end face of the inner core 22. Bolts or screws are used to fix the inner cover plate 24 to the inner core 22, forming a motion compensation component 60. This motion compensation component 60 can be used as a whole to achieve linkage. The inner cover plate 24 is used to axially limit the knob 23, confining it within the cavity formed by the inner wall of the inner core 22 and the inner cover plate 24, allowing the knob 23 to move within the cavity without detaching from it. After assembling the inner core 22, knob 23, and inner cover plate 24 to form a motion compensation component 60, the motion compensation component 60 is installed inside the outer casing 21, with the arc-shaped plate 213 of the outer casing 21 passing through the oblong hole 223 of the inner core 22. The external thread section 231 of the knob 23 is threadedly engaged with the internal thread 2131 of the outer casing provided on the arc-shaped plate 213. Finally, the outer cover plate 24 is installed on the end face of the outer casing 21 using a threaded connection to confine the motion compensation component within the outer casing 21. The knob 23 and the outer casing 21 are threadedly connected. Rotating the knob 23 causes the entire motion compensation component to move axially within the outer casing 21. Since the inner core 22 is fixedly connected to the valve delivery device 30, it can drive the valve delivery device 30 to move axially, thereby achieving valve shortening compensation. (See also...) Figure 13 The implantable device structure of this embodiment will be described below, using a heart valve 50 as an example. 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 expands back to its original size after contracting into and being released from the delivery sheath. The valve connector 52 is a threaded cylindrical structure that can be threadedly connected to the delivery device 30.

[0065] See Figure 14The structure of the delivery device 30 is briefly described below. This delivery device can be used to deliver implantable devices, including but not limited to heart valves. The delivery device 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 delivery device 30, with an internal cavity for the operator to hold during delivery. 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 achieve a threaded connection with the internal thread structure of the valve connector 52. Of course, the connecting structure 3031 is not limited to a threaded structure; it can also be other connecting structures, such as a shape-fitting protrusion-groove structure. In this case, the valve connector is also configured to have a shape-fitting structure that mates with the connecting structure 3031. The release knob 302 is located on the handle assembly 301 and can rotate along the central axis of the handle assembly 301. Its inner wall has an internal thread structure (not shown in the figure). The loading tube assembly 304 is sleeved on the outside of the connecting rod 303, and its proximal end has a tail connector 3041. The tail connector 3041 is provided with an external thread structure (not shown in the figure) that mates with the internal thread structure of the release knob 302. In addition, the tail connector 3041 is slidably connected to the handle assembly 301, that is, the handle assembly 301 rotates and limits the tail connector 3041, so that it can only move axially relative to the handle assembly 301 and cannot rotate. When the release knob 302 is rotated, the loading tube assembly 304 can move along the axial direction.

[0066] Referring to Figures 14-15, when loading the heart valve, first rotate the release knob 302 to move the loading tube assembly 304 backward until the connecting structure 3031, which exposes the connecting rod 303, is exposed. Then, the valve connector 52 of the heart valve 50 is fixedly connected to the connecting structure 3031. See also... Figure 16 Next, rotate the release knob 302 to move the loading tube assembly 304 forward relative to the handle assembly 301 until the valve is completely retracted into the loading tube assembly 301, completing the valve loading. When the valve is released, adjust the delivery system 30 to the appropriate implantation position and direction, fix the handle assembly 301 of the delivery system in place, and then rotate the release knob 302 to retract the loading tube assembly 304. At this time, the valve will gradually protrude from the loading tube assembly 304 as the loading tube assembly 304 retracts and expands until the valve is completely detached from the loading tube assembly 304. Finally, disconnect the connecting rod 303 from the valve, thus completing the valve release.

[0067] The following describes the usage process of the support device for the delivery device involved in this embodiment. In actual use, by tightening the fastening screw 1, the mounting base 11 is fixed to the operating table support 40, thus fixing the positioning support assembly 1 to the operating table. This allows the fastening screws 2, 3, and 4 to be in a loose state, at which point the components of the positioning support assembly 1 can move relative to each other. The delivery device 30 with the pre-installed valve is then assembled into the shortening compensation assembly 20. At this time, the release knob 302 of the delivery device 30 is fixedly connected to the knob of the shortening compensation assembly 20, and both rotate together. The front end of the delivery device 30 is fixedly connected to the inner core 22, and the two cannot rotate relative to each other. The relative positions of the delivery device 30 and the shortening compensation assembly 20 are as follows: Figure 14 As shown, the inner core 22 and knob 23 are in the first position relative to the outer shell 21. Then, the outer shell 21 of the shortening compensation assembly 20 is threadedly connected to the ball joint seat on the positioning bracket assembly 1. Alternatively, the shortening compensation assembly 20 can be connected to the positioning bracket assembly 10 first, and then the delivery device 30 can be assembled with the shortening compensation assembly 20. After the delivery device 100 is assembled, the position of the delivery device can be repeatedly adjusted to adjust the valve release position according to the actual surgical position requirements. After adjustment, the various components of the positioning bracket assembly 1 and their relative positions with the shortening compensation assembly are fixed by tightening the fastening screws 2, 3, and 4 to finally achieve the positioning of the delivery device 20. During the operation, the operator rotates the knob 23 under the monitoring of the monitoring equipment. As the external thread section 231 on the knob 23 rotates relative to the internal thread 2131 on the outer shell 21, the inner core 22 and knob 23 move to the second position relative to the outer shell 21. The second position is a position closer to the distal end relative to the first position. Specifically, as knob 23 is rotated, on the one hand, the handle of the delivery system 30, which is fixedly connected to the inner core 22, is moved axially distally to compensate for valve shortening. On the other hand, since knob 23 is fixedly connected to the release knob 302 of the delivery system 30, rotating knob 23 will drive the release knob 302 to rotate, thereby retracting the sheath to release the heart valve. Specifically, assuming that the distance the outer sheath retracts relative to the handle when the heart valve is fully released is L1, and the amount of valve shortening is L2, as knob 23 is rotated, the outer sheath slowly retracts relative to the handle while the delivery system (including the handle, outer sheath, and heart valve) moves distally. When the distance the outer sheath retracts relative to the handle is L1, the distance the delivery system moves distally is L2, thereby releasing the valve from the delivery system 30 while the entire delivery system axially moves to compensate for shortening, ultimately achieving rapid in-situ release of the valve. After release, the positions of the inner core 22 and knob 23 relative to the outer casing 21 can be adjusted as follows: Figure 15 As shown. Among them, Figure 14-15This is merely an illustrative description and does not imply that in actual operation, the inner core and knob can only be in this position relative to the outer shell before and after valve release. In other words, the above illustrative description does not constitute a specific limitation on this embodiment.

[0068] In other embodiments, the motion compensation member may consist only of a knob. In this case, the external thread of the knob engages with the internal thread on the outer casing wall. When the knob is rotated, the rotation of the conveyor can be restricted by hand or other mechanism, causing the conveyor to move axially along with the knob. In other embodiments, the motion compensation member may include a knob and an inner core, but not an inner cover plate.

[0069] Second Embodiment

[0070] The support device in this embodiment has a basically the same structure as the support device in the first embodiment, except that the structure of the knob is different.

[0071] See Figure 16As shown, when the conveyor 30 is installed into the shortening compensation assembly (excluding the outer shell, inner cover, outer cover, etc.), the release knob of the conveyor 30 engages with the knob 23a, and the distal end face of the knob 23a abuts against the proximal end face of the inner core 22. At this time, the protrusion on the release knob engages with the knob groove 2323a inside 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 and the knob 23a of the conveyor are installed in the axial direction, the limiting member 233a will axially limit the proximal end face of the release knob, so that the conveyor 30 and the shortening compensation assembly will not loosen in the axial direction. The limiting member 233a can be a wedge-shaped protrusion structure or a wedge-shaped snap-fit ​​structure, and at least one is provided in the circumferential direction. Specifically, the limiting member 233a has a guide slope 2331a on its 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 limiting member 233a and pass over it, thus allowing the knob 23a to smoothly enter the knob groove 2323a. During assembly, the knob 23a is deformable as a whole, meaning its inner diameter can increase, thereby facilitating the smooth installation of the conveyor 30. In other embodiments, the limiting member 233a itself can also deform; during the installation of the conveyor 30, the limiting member 233a can be compressed, allowing the release knob to smoothly enter the knob 23a. In other embodiments, both the knob 23a and the release member 233a are deformable to reduce the assembly difficulty between the conveyor and the knob 23a. Once the release knob of the conveyor and knob 23a are axially installed in place, the distal end of the limiting member 233a will axially limit the proximal end face of the release knob. In other embodiments, the distal end of the limiting member 233a also has a bevel to allow the subsequent conveyor to smoothly exit from knob 23a.

[0072] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. The scope of protection of this patent should be determined by the appended claims.

Claims

1. A support device for a delivery device for delivering an implantation device, the delivery device comprising a sheath and a release knob, characterized in that, The application relates to a shortening compensation assembly for an implanting device. The shortening compensation assembly comprises a positioning support assembly, a shortening compensation assembly including a housing and a motion compensation component, the housing is connected with the positioning support assembly, and the motion compensation component is used for loading the conveyor. The housing is provided with a housing internal thread, the motion compensation component includes a knob provided with an external thread section matched with the housing internal thread. The motion compensation component further includes an inner core movably connected with the housing, the inner core has an inner core cavity connected with the conveyor, a distal end surface of the knob abuts against the inner core cavity to push the inner core to move, the knob is internally provided with a plurality of knob grooves uniformly distributed in a circumferential direction, and the knob grooves are matched with the release knob; with rotation of the knob, the release knob is driven to rotate, the sheath is retracted, and the conveyor fixedly connected with the inner core is axially moved to the distal end relative to the housing, so that shortening compensation of the implanting device is realized. The proximal end part of the knob groove is further provided with at least one limiting part distributed in a circumferential direction.

2. The support device for conveyors according to claim 1, characterized in that, The housing is internally provided with at least two arc-shaped plates uniformly distributed in a circumferential direction, and the arc-shaped plates are provided with the housing internal thread.

3. The support device for conveyors according to claim 1, characterized in that, An end surface of the inner core is provided with a waist-shaped hole matched with the arc-shaped plates, and the at least two arc-shaped plates can pass through the waist-shaped hole and enter the inner core cavity.

4. The support device for conveyors according to claim 3, characterized in that, 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.

5. The support device for conveyors according to claim 4, characterized in that, The inner core cavity has a profiled hole matched with the conveyor to limit rotation of the conveyor.

6. The support arrangement for a conveyor according to claim 4, characterized in that The knob includes a spiral body arranged at the proximal end of the external thread section, the motion compensation component further includes an inner cover plate connected with the proximal end surface of the inner core, the inner cover plate has a central hole through which the arc-shaped plates and the spiral body pass, the central hole includes two circumferentially symmetrically arranged circular arc sections, the inner diameter of the circular arc section is greater than or equal to the outer diameter of the spiral body and smaller than the outer diameter of the external thread section.

7. The support arrangement for a conveyor according to claim 4, characterized in that The shortening compensation assembly further includes an outer cover plate connected with the proximal end surface of the housing, the knob is further provided with a rotation indication mark, and the proximal end surface of the outer cover plate is provided with a rotation scale matched with the rotation indication mark for use.

8. The support apparatus for conveyors of claim 1 wherein, The support device is used for driving the conveyor to axially move, so as to realize shortening compensation of the implanting device.

9. A conveying system comprising a conveyor and a support device according to any one of claims 1-8, characterized in that, ​

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