Interventional instrument handling accessory and interventional medical system

Abstract

An interventional instrument handling accessory (100) for positioning an interventional instrument (200), the interventional instrument handling accessory (100) comprising a support frame (10) and at least one sliding assembly (20), the interventional instrument (200) being detachably connected to the sliding assembly (20). The support frame (10) comprises a guide sliding rod (13) provided with at least one rack (131) along the length direction thereof. The sliding assembly (20) comprises a sliding block (21) and an adjusting mechanism (23) detachably provided on the sliding block (21), the adjusting mechanism (23) comprising a limiting part (235) and a gear (234) fixedly connected with the limiting part (235). When the sliding assembly (20) is installed on the guide sliding rod (13), the sliding block (21) is sleeved on the guide sliding rod (13), the gear (234) is engaged with the rack (131), and the limiting part (235) is limited between the guide sliding rod (13) and the side wall of the sliding block (21); when the sliding assembly (20) is separated from the guide sliding rod (13), the adjusting mechanism (23) can be separated from the sliding block (21). An interventional medical system comprising the interventional instrument (200) and the interventional instrument handling accessory (100) is also provided.

Description

[0001] This application claims priority and benefits to the invention patent application filed with the China National Intellectual Property Administration on December 31, 2020, application number 202011644108.6, entitled "Interventional Device Control Accessory and Interventional Medical System", and the utility model patent application filed on December 31, 2020, application number 202023338413.0, entitled "Interventional Device Control Accessory and Interventional Medical System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of medical device technology, and in particular to an interventional device control accessory and an interventional medical system. Background Technology

[0003] In interventional medical procedures, to ensure the safety and smooth progress of the surgery, it is often necessary to keep the interventional instruments in a certain position. For example, part of the interventional instrument must be positioned near the patient's body or surgical site during the procedure. Therefore, various auxiliary devices can be used to stably position the interventional instruments.

[0004] Typically, interventional instruments need to be manipulated and repositioned during surgery. In many cases, one part of the interventional instrument must move relative to another. Existing technology discloses an interventional instrument manipulation accessory, including a support frame and a slider mounted on the support frame. The interventional instrument is mounted on the slider, and the slider has an adjustment mechanism for controlling the movement of the slider, thereby moving one part and / or another part of the interventional instrument. However, existing adjustment mechanisms are fixed to the slider by screws or other fasteners, making disassembly and cleaning difficult. Summary of the Invention

[0005] The purpose of this application is to provide an interventional device control accessory with an adjustment mechanism that can be easily detached from the slider.

[0006] This application provides an interventional device control accessory, which includes a support frame and at least one sliding assembly. The support frame includes a guide rod, and the guide rod has at least one rack along its length. The sliding assembly includes a slider and an adjustment mechanism detachably disposed on the slider. The adjustment mechanism includes a limiting part and a gear fixedly connected to the limiting part. When the sliding assembly is installed on the guide rod, the slider is sleeved on the guide rod, the gear meshes with the rack, and the limiting part is located between the guide rod and the side wall of the slider; when the sliding assembly is separated from the guide rod, the adjustment mechanism can be separated from the slider.

[0007] In some embodiments, the slider has a slide groove and a receiving groove communicating with the slide groove, and the adjusting mechanism is detachably installed in the receiving groove. When the sliding assembly is installed on the guide rod, the guide rod passes through the slide groove, the gear is received in the receiving groove and the slide groove and meshes with the rack, and the limiting part is rotatably received in the receiving groove.

[0008] In some embodiments, the two ends of the receiving groove are respectively formed with a through hole and a blind hole, and the limiting part passes through the through hole and is rotatably received in the blind hole.

[0009] In some embodiments, the adjusting mechanism further includes a rotating shaft, the limiting part and the gear are both fixedly mounted on the rotating shaft, and the rotating shaft is at least partially rotatably inserted into the receiving groove.

[0010] In some embodiments, the adjusting mechanism further includes a rotating member, one end of the rotating shaft extending through the through hole and connected to the rotating member, and the other end of the rotating shaft away from the rotating member being fixedly connected to the limiting portion.

[0011] In some embodiments, the unilateral fitting clearance between the limiting part and the blind hole ranges from 0.02 mm to 0.15 mm, the depth of the blind hole is greater than or equal to the thickness of the limiting part, the thickness of the limiting part is proportional to the unilateral fitting clearance, and the thickness of the limiting part is greater than 1.15 mm.

[0012] In some embodiments, the slider is made of plastic or metal.

[0013] In some embodiments, one of the blind hole and the through hole is located on the left side wall of the slider, and the other is located on the right side wall of the slider, with the center lines of the through hole and the blind hole coinciding.

[0014] In some embodiments, the limiting portion is located between the guide rod and the left or right side wall of the slider.

[0015] In some embodiments, the receiving groove is provided with a gear assembly hole, the gear assembly hole is connected to the slide groove, and the gear passes through the gear assembly hole to mesh with the rack.

[0016] In some embodiments, the limiting portion is cylindrical, and the diameter of the limiting portion is larger than the outer diameter of the gear.

[0017] In some embodiments, the adjusting mechanism further includes a stabilizing part fixedly connected to the rotating shaft, the gear being located between the limiting part and the stabilizing part, the stabilizing part being at least partially rotatably accommodated in the through hole, and the stabilizing part and the through hole being clearance-fitted.

[0018] In some embodiments, the single-sided fitting clearance between the stabilizing part and the through hole ranges from 0.02 mm to 0.15 mm.

[0019] In some embodiments, both the limiting part and the stabilizing part are cylindrical, with the diameter of the limiting part being larger than the outer diameter of the gear, and the diameter of the stabilizing part being larger than the diameter of the limiting part.

[0020] In some embodiments, the adjusting mechanism further includes a stabilizing part fixedly connected to the rotating shaft, the gear being located between the limiting part and the stabilizing part, the stabilizing part being at least partially rotatably accommodated in the through hole, and the guide rod being clamped between the limiting part and the stabilizing part.

[0021] In some embodiments, both the limiting part and the stabilizing part are cylindrical, with the diameter of the limiting part being larger than the outer diameter of the gear, and the diameter of the stabilizing part being larger than the diameter of the limiting part.

[0022] In some embodiments, the adjusting mechanism further includes a stabilizing portion fixedly connected to the gear, the gear being located between the limiting portion and the stabilizing portion, and the stabilizing portion being at least partially rotatably accommodated in the through hole. The guide rod includes a first surface, the rack is disposed on the first surface, the stabilizing portion is cylindrical, and the outer peripheral wall of the stabilizing portion is in rotatable contact with the first surface.

[0023] In some embodiments, the sliding assembly further includes a locking mechanism disposed on the slider, the locking mechanism including a retaining member that presses against the guide rod to lock the slider in the position of the guide rod or away from the guide rod to unlock the slider in the position of the guide rod.

[0024] In some embodiments, the slider has a positioning hole communicating with the slide groove, the abutment is inserted in the positioning hole, and the abutment moves along the axis of the positioning hole to press against or move away from the guide rod.

[0025] In some embodiments, the locking mechanism further includes an elastic member connected to the abutment member, the elastic member elastically abutting the guide rod.

[0026] In some embodiments, the abutment includes a mounting portion facing the slide groove and a connecting portion facing away from the slide groove, the mounting portion having a mounting hole, and the elastic member being partially accommodated in the mounting hole.

[0027] In some embodiments, the locking mechanism further includes a locking member, which is sleeved on the connecting portion and fixedly connected to the abutment member so that the locking member and the abutment member rotate synchronously.

[0028] In some embodiments, the mounting part is threadedly connected to the positioning hole, and a stop structure protrudes from one end of the mounting part facing the slide groove. The slider has a stop groove recessed on the periphery of the end of the positioning hole facing the slide groove. When the abutment locks the slider in position on the guide rod, the stop structure is in close contact with the guide rod. When the abutment unlocks the slider in position on the guide rod, the stop structure is in close contact with the bottom surface of the stop groove.

[0029] In some embodiments, the sliding assembly further includes a bracket for fixedly connecting the slider, the bracket being used for detachably connecting an interventional device.

[0030] In some embodiments, the stent includes a U-shaped positioning frame for detachable connection with the interventional device. The inner side of the U-shaped positioning frame is a vertical plane, the inner bottom surface is an arc surface, and the length-to-height ratio of the U-shaped positioning frame is 3:2.

[0031] In some embodiments, the clearance between the guide rod and the inner surface of the side wall of the slider is in the range of 0.02mm to 0.15mm.

[0032] This application also provides an interventional medical system, which includes an interventional device and an interventional device control accessory, wherein the interventional device is detachably connected to the sliding assembly.

[0033] The interventional device control accessory and interventional medical system provided in this application include a sliding assembly detachably mounted on the guide rod of the support frame, and an adjustment mechanism of the sliding assembly detachably mounted on the slider. When the sliding assembly is mounted on the guide rod, the slider is sleeved on the guide rod, the gear meshes with the rack, and the limiting part is located between the guide rod and the side wall of the slider, so that the adjustment structure only has the freedom of rotation, and the adjustment mechanism cannot be disassembled and removed from the slider. When the sliding assembly is separated from the guide rod, the limiting part is no longer restricted by the guide rod, and the adjustment mechanism can be disassembled and removed from the slider, which is easy to disassemble and convenient to clean. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the interventional medical system provided in the first embodiment of this application.

[0035] Figure 2 yes Figure 1 A three-dimensional structural diagram of the interventional device control accessory.

[0036] Figure 3 yes Figure 2 A three-dimensional structural diagram of the support frame.

[0037] Figure 4 yes Figure 2 A three-dimensional structural diagram of the sliding component.

[0038] Figure 5 yes Figure 4 The side view of the sliding component.

[0039] Figure 6 yes Figure 4 A cross-sectional view of the sliding component in the image.

[0040] Figure 7 yes Figure 4 A three-dimensional exploded view of the sliding component.

[0041] Figure 8 yes Figure 4 A three-dimensional structural diagram of the slider in the diagram.

[0042] Figure 9 yes Figure 4 A three-dimensional structural diagram of the adjustment mechanism.

[0043] Figure 10 yes Figure 4 A three-dimensional structural diagram of the sliding component from another perspective.

[0044] Figure 11 yes Figure 4 A cross-sectional view of the sliding component in the unlocked state.

[0045] Figure 12 yes Figure 11 A magnified view of region A in the diagram.

[0046] Figure 13 yes Figure 4 A cross-sectional view of the sliding component in a locked state.

[0047] Figure 14 yes Figure 13 A magnified view of region B in the diagram.

[0048] Figure 15 yes Figure 4 A three-dimensional structural diagram of the locking mechanism.

[0049] Figure 16 yes Figure 15 An exploded view of the three-dimensional structure of the locking mechanism.

[0050] Figure 17 yes Figure 4 A cross-sectional view of another embodiment of the sliding component.

[0051] Figure 18 yes Figure 4 A cross-sectional view of another embodiment of the sliding component.

[0052] Figure 19 yes Figure 4 A cross-sectional view of another embodiment of the sliding component in the diagram.

[0053] Figure 20 This is a three-dimensional structural schematic diagram of another embodiment of the interventional medical system provided in the first embodiment of this application.

[0054] Figure 21 This is a cross-sectional view of the sliding assembly of the interventional device control aid provided in the second embodiment of this application.

[0055] Figure 22 yes Figure 21 A three-dimensional structural diagram of the adjustment mechanism.

[0056] Figure 23 This is a cross-sectional view of the sliding assembly of the interventional device control aid provided in the third embodiment of this application.

[0057] Figure 24 yes Figure 23 A three-dimensional structural diagram of the adjustment mechanism.

[0058] Figure 25 This is a cross-sectional view of the sliding assembly of the interventional device control aid provided in the fourth embodiment of this application.

[0059] Figure 26 yes Figure 25 A three-dimensional structural diagram of the adjustment mechanism.

[0060] Figure 27 This is a cross-sectional view of the sliding assembly of the interventional device control aid provided in the fifth embodiment of this application.

[0061] Figure 28 yes Figure 27 A three-dimensional structural diagram of the adjustment mechanism. Detailed Implementation

[0062] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0063] Furthermore, the following descriptions of the embodiments are with reference to the accompanying illustrations, which illustrate specific embodiments in which this application can be implemented. Directional terms used in this application, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying illustrations. Therefore, the directional terms used are for better and clearer explanation and understanding of this application, and are not intended to indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0064] It should be noted that, compared with the invention patent application with application number 202011644108.6 and the utility model patent application with application number 202023338413.0, in order to describe more accurately, this application modifies "second limiting part" to "limiting part", "first limiting part" to "stabilizing part", "annular structure" to "stopping structure", and "step position" to "stopping groove".

[0065] First Embodiment

[0066] Please see Figure 1 The first embodiment of this application provides an interventional device control accessory 100 and an interventional medical system. The interventional medical system includes an interventional device 200 and the interventional device control accessory 100. The interventional device control accessory 100 is used to position the interventional device 200 during interventional medical procedures, thereby providing stable support for the interventional device 200. The interventional device control accessory 100 includes a support frame 10 and at least one sliding component 20, to which the interventional device 200 is detachably connected. The interventional device 200 is detachably positioned on the sliding component 20 of the interventional device control accessory 100. By moving the sliding component 20, the interventional device 200 can be moved to a certain position, such as positioning it near the patient's body or the surgical site. When the interventional device 200 includes at least two relatively movable parts, each part is detachably positioned on the corresponding sliding component 20 of the interventional device control accessory 100. By moving the sliding component 20, each part of the interventional device 200 can be moved to a certain position to facilitate interventional procedures.

[0067] The following description uses an interventional device 200 as an example of a mitral valve clip system. The interventional device 200 includes a valve clip control device 210, a bending sheath 220, and a guide sheath 230. The valve clip control device 210, the bending sheath 220, and the guide sheath 230 are movable relative to each other in pairs. The valve clip control device 210, the bending sheath 220, and the guide sheath 230 are respectively positioned on different sliding components 20 of the interventional device control accessory 100. Depending on the treatment purpose and needs, the interventional device 200 can also have other forms and structures. The technical solutions of the interventional medical systems and interventional device control accessories 100 corresponding to other forms and structures of the interventional device 200 are also within the scope of protection of this application.

[0068] In some embodiments, there are three sliding components 20, each corresponding to a valve clip control device 210, a bending sheath 220, and a guide sheath 230 of the interventional device 200. The number of sliding components 20 can be determined by the number of parts of the interventional device 200 that need to be fixed. The number of sliding components 20 can also be one, two, or other numbers. The sliding components 20 are detachably mounted on the support frame 10, and different numbers of sliding components 20 can be installed on the support frame 10 according to actual needs.

[0069] Please refer to the following: Figures 2 to 6 The support frame 10 includes a guide rod 13, which has at least one rack 131 along its length. The sliding assembly 20 includes a slider 21 and an adjustment mechanism 23 detachably disposed on the slider 21. The adjustment mechanism 23 includes a limiting part 235 and a gear 234 fixedly connected to the limiting part 235. When the sliding assembly 20 is installed on the guide rod 13, the slider 21 is sleeved on the guide rod 13, the gear 234 meshes with the rack 131, and the limiting part 235 is limited between the guide rod 13 and the side wall of the slider 21. When the sliding assembly 20 is separated from the guide rod 13, the adjustment mechanism 23 can be separated from the slider 21.

[0070] In this embodiment of the interventional device control accessory 100, a sliding assembly 20 is detachably mounted on the guide rod 13 of the support frame 10, and an adjustment mechanism 23 of the sliding assembly 20 is detachably mounted on the slider 21. When the sliding assembly 20 is mounted on the guide rod 13, the slider 21 is sleeved on the guide rod 13, the gear 234 meshes with the rack 131, and the limiting part 235 of the adjustment mechanism 23 is limited between the guide rod 13 and the side wall of the slider 21, so that the adjustment mechanism 23 only has rotational freedom and cannot be detached from the slider 21. When the sliding assembly 20 is detached from the guide rod 13, the limiting part 235 is no longer restricted by the guide rod 13, and the adjustment mechanism 23 can be detached from the slider 21, which is easy to disassemble and convenient to clean. The various parts of the interventional device 200 fixed on different sliding components 20, such as the valve clip control device 210, the bending sheath 220, and the guide sheath 230, can be moved by adjusting the position of the corresponding slider 21 on the guide rod 13 through the adjustment mechanism 23 of each sliding component 20.

[0071] It is understood that when the sliding assembly 20 is installed on the guide rod 13, the slider 21 is sleeved on the guide rod 13. The gear 234 of the adjusting mechanism 23 meshes with the rack 131 of the guide rod 13. The gear 234 rotates in mesh with the rack 131 and moves along the rack 131, simultaneously driving the limiting part 235 to rotate, causing it to tend to move along the length direction of the guide rod 13. This generates a thrust on the slider 21 along the length direction of the guide rod 13, thereby pushing the sliding assembly 20 to move along the length direction of the guide rod 13. Therefore, controlling the rotation of the gear 234 can adjust the movement of the sliding assembly 20, avoiding excessive movement of the sliding assembly 20.

[0072] At this time, the limiting part 235 of the adjusting mechanism 23 is positioned between the guide rod 13 and the side wall of the slider 21, allowing the adjusting mechanism 23 only rotational freedom on the slider 21 and preventing it from being removed from the slider 21, effectively preventing the adjusting mechanism 23 from falling. Thus, by limiting the limiting part 235 through the slider 21 and the guide rod 13, the adjusting mechanism 23 effectively controls the movement of the slider 21. Without applying a force to rotate the adjusting mechanism 23, the sliding assembly 20 and the guide rod 13 remain relatively stationary, preventing improper movement of the interventional instrument 200, ensuring the smooth progress of the surgery, and reducing surgical risks. When the sliding assembly 20 separates from the guide rod 13, the limiting part 235 is released from the restriction of the guide rod 13, and the adjusting mechanism 23 can be detached from the slider 21, facilitating postoperative cleaning and disinfection of the adjusting mechanism 23.

[0073] In some embodiments, the limiting part 235 and the guide rod 13, as well as the limiting part 235 and the side wall of the slider 21, are fitted with a clearance to ensure stable rotation and movement of the adjusting mechanism 23. The clearance between the limiting part 235 and the guide rod 13, and between the limiting part 235 and the side wall of the slider 21, can range from 0.02mm to 0.15mm, preferably from 0.05mm to 0.1mm. This avoids the limiting part 235 from wobbling due to a large clearance, while also ensuring that the limiting part 235 rotates with the gear 234. Of course, in other embodiments, there can also be a certain distance between the limiting part 235 and the guide rod 13, and between the limiting part 235 and the side wall of the slider 21, as long as the movement of the limiting part 235 can push the slider 21 to move.

[0074] In some embodiments, the guide rod 13 is provided with a rack 131 along its length direction, and correspondingly, the adjusting mechanism 23 of the sliding assembly 20 is provided with a gear 234 that meshes with the rack 131. Of course, the guide rod 13 may also be provided with multiple racks 131 along its length direction, and correspondingly, the adjusting mechanism 23 of the sliding assembly 20 may be provided with multiple gears 234, and the multiple gears 234 respectively mesh with multiple racks 131.

[0075] Please see Figure 3 The support frame 10 also includes a base plate 11 and two connecting posts 12 disposed on the base plate 11. The two connecting posts 12 have different heights, and a guide rod 13 is connected to the end of the connecting post 12 away from the base plate 11, so that the guide rod 13 is inclined relative to the base plate 11 to meet the optimal puncture angle of the interventional instrument 200. The guide rod 13, the base plate 11, and the connecting posts 12 can be fixedly connected by non-removable means such as welding or gluing, or by detachable means such as snap-fit ​​or screw connection, so that the extended portion between the base plate 11 and the guide rod 13 forms a non-adjustable included angle α. The size of the included angle α can be determined according to the optimal puncture angle of the surgery, and the size of the included angle α is in the range of 15 degrees to 20 degrees. Preferably, the included angle α is 18 degrees. Of course, the included angle α between the base plate 11 and the guide rod 13 can also be designed to be adjustable, for example, by adjusting the height of the connecting post 12.

[0076] like Figure 3 As shown, the guide rod 13 includes an upper surface 132 facing away from the base plate 11, a lower surface 133 facing the base plate 11, and a left surface 134 and a right surface 135 located on opposite sides of the upper surface 132. A rack 131 is disposed on one of the four surfaces: the upper surface 132, the lower surface 133, the left surface 134, and the right surface 135. In some embodiments, the rack 131 is disposed on the upper surface 132 of the guide rod 13, and the rack 131 extends along the length of the guide rod 13 to opposite ends of the guide rod 13. The specific structure of the sliding assembly 20 will be described in detail below with the rack 131 disposed on the upper surface 132 of the guide rod 13 as an example.

[0077] Please refer to the following: Figures 4 to 6 The slider 21 is a rectangular block, comprising an upper sidewall 219, a lower sidewall 2110 facing away from the upper sidewall 219, a left sidewall 2111 and a right sidewall 2112 located on the left and right sides of the upper sidewall 219, and two opposing end walls. The slider 21 can be made of plastic or metal. The slider 21 has a groove 211, and when the sliding assembly 20 is installed on the guide rod 13, the guide rod 13 passes through the groove 211. Specifically, the groove 211 extends through the two opposing end walls of the slider 21, and the cross-section of the groove 211 is convex. The slider 21 is fitted onto the guide rod 13 through the groove 211. In addition, the height of the first tooth near the end of the rack 131 is lower than the height of the other teeth, which facilitates the guide rod 13 to be guided into the slider 21.

[0078] It should be noted that, since the guide rod 13 passes through the groove 211 of the slider 21, the slider 21 can move along the guide rod 13. The guide rod 13 and the inner surfaces of the four side walls of the slider 21 need to be in clearance fit to ensure smooth movement of the slider 13. The clearance between the guide rod 13 and the inner surfaces of the four side walls of the slider 21 can be 0.02mm to 0.15mm, preferably 0.05mm to 0.1mm, to avoid the slider 21 from shaking during movement on the guide rod 13 due to a large gap between the guide rod 13 and the inner surfaces of the four side walls of the slider 21.

[0079] Furthermore, the lower sidewall 2110 of the slider 21 has an opening 212 along the extension direction of the groove 211. The opening 212 connects to the groove 211. The dimension of the opening 212 along the width direction of the guide rod 13 is larger than the dimension along the width direction of the guide rod 13 at the end where the connecting post 12 connects to the guide rod 13. This facilitates the movement of the slider 21 on the guide rod 13 without being blocked by the connecting post 12, allowing the sliding assembly 20 to move along the entire guide rod 13. When the slider 21 is made of plastic material, it can deform under force. When the sliding assembly 20 is installed on the guide rod 13, the guide rod 13 can slightly open the opening 212 of the slider 21, making the width of the groove 211 slightly larger. This allows the guide rod 13 to easily pass through the groove 211, making the installation of the sliding assembly 20 easier.

[0080] In other embodiments, the lower sidewall 2110 of the slider 21 can also be closed. The slider 21 of the sliding assembly 20 can be first sleeved on the guide rod 13, and then the guide rod 13 can be fixedly connected to the connecting post 12. In this case, the connection between the guide rod 13 and the connecting post 12 is a detachable fixed connection.

[0081] Please see Figure 4 and Figure 5The sliding assembly 20 also includes a bracket 22, which is mounted on the slider 21 and is used for detachable connection to the interventional device 200. Specifically, the upper sidewall 219 of the slider 21 has a bracket mounting hole 218 for mounting the bracket 22. The bracket 22 can be fixedly connected to the upper sidewall 219 of the slider 21 using fasteners such as screws or pins, to facilitate replacement of different models of bracket 22. Of course, the bracket 22 can also be directly fixed to the upper sidewall 219 of the slider 21 by welding or bonding. The bracket 22 can be made of metal or polymer material, or the main body can be made of metal but the surface in contact with the interventional device 200 can be covered with a polymer anti-slip layer such as rubber or silicone.

[0082] Furthermore, the support 22 includes a U-shaped positioning frame 221 and a connecting rod 222 connected to one end of the U-shaped positioning frame 221. The U-shaped positioning frame 221 is detachably connected to the interventional device 200, and the connecting rod 222 is detachably connected to the support mounting hole 218. The inner surface of the U-shaped positioning frame 221 is a vertical plane, and the inner bottom surface is an arc surface. The length-to-height ratio L:H inside the U-shaped positioning frame 221 is 3:2. The shape and size of the U-shaped positioning frame 221 match the corresponding components on the interventional device 200, which can prevent the interventional device 200 from rotating. The arc surface design of the bottom surface can support most interventional devices 200, providing strong compatibility. Of course, the U-shaped positioning frame 221 can be replaced by a V-shaped positioning frame, a C-shaped positioning frame, etc.

[0083] Please refer to the following: Figures 7 to 9The slider 21 also has a receiving groove 215 that connects to the slide groove 211, and the adjusting mechanism 23 is detachably installed in the receiving groove 215. When the sliding assembly 20 is installed on the guide rod 13, the guide rod 13 passes through the slide groove 211, the gear 234 is received in the receiving groove 215 and the slide groove 211 and meshes with the rack 131, and the limiting part 235 is rotatably received in the receiving groove 215. Specifically, the receiving groove 215 has a gear mounting hole 216 that connects to the slide groove 211, and the gear 234 passes through the gear mounting hole 216 and meshes with the rack 131. The receiving groove 215 is connected to the slide groove 211 through the gear mounting hole 216, so that the adjusting mechanism 23 is installed in the receiving groove 215, and part of the gear 234 passes through the gear mounting hole 216 and is placed in the slide groove 211. When the sliding assembly 20 is installed on the guide rod 13, the limiting part 235 is limited between the guide rod 13 and the side wall of the slider 13. The gear 234 meshes with the rack 131. The meshing and rotation of the gear 234 and the rack 131 causes the gear 234 to move along the rack 131, and at the same time, it drives the limiting part 235 to rotate in the receiving groove 215, causing the limiting part 235 to tend to move along the length direction of the guide rod 13. Since the receiving groove 215 restricts the movement of the limiting part 235, the limiting part 235 generates a pushing force on the slider 21 along the length direction of the guide rod 13, so that the sliding assembly 20 can move on the guide rod 13, thereby moving the movable part of the interventional device 200. When the sliding assembly 20 is separated from the guide rod 13, the adjusting mechanism 23 is also released from the restriction of the guide rod 13, so that the adjusting mechanism 23 can be pulled out from the receiving groove 215. Its disassembly and installation are simple and convenient.

[0084] Please see Figure 8 The receiving groove 215 has a through hole 213 and a blind hole 214 formed at both ends. Specifically, the right side wall 2112 of the slider 21 has a through hole 213, and the left side wall 2111 has a blind hole 214. The axis lines of the through hole 213 and the blind hole 214 coincide. The through hole 213 connects to the blind hole 214 and also connects to the slide groove 211. When the adjusting mechanism 23 is installed on the slider 21, the limiting part 235 passes through the through hole 213 and is rotatably received in the blind hole 214. The gear 234 is located between the through hole 213 and the blind hole 214 and is partially received in the slide groove 211.

[0085] It is understood that the blind hole 214 provides installation space for the limiting part 235 and provides support and limitation for the limiting part 235, simplifying the structure of the slider 21 and the adjusting mechanism 23. The limiting part 235 can be partially accommodated in the blind hole 214. Under the premise of clearance fit between the guide rod 13 and the left side wall 2111 of the slider 21, the limiting part 235 is entirely accommodated in the blind hole 214 and limited between the guide rod 13 and the left side wall 2111 of the slider 21. Preferably, the depth of the blind hole 214 is equal to the thickness of the limiting part 235, and the limiting part 235 is just entirely accommodated in the blind hole 214. The end face of the limiting part 235 near the gear 234 is flush with the inner surface of the left side wall 2111 of the slider 21. The limiting part 235 passes through the through hole 213 and is accommodated in the blind hole 214, making the installation and disassembly of the adjusting mechanism 23 more flexible and convenient. The limiting part 235 and the blind hole 214 are fitted with a clearance, which makes the rotation of the limiting part 235 in the blind hole 214 more stable, and also makes the meshing rotation of the gear 234 and the rack 131 more stable. Specifically, the clearance range of the single-sided fit between the limiting part 235 and the blind hole 214 is 0.02mm to 0.15mm, preferably 0.05mm to 0.1mm. In other embodiments, the blind hole 214 may be provided on the right side wall 2112 of the slider 21, and the through hole 213 may be provided on the left side wall 2111 of the slider 21.

[0086] Please refer to the following: Figures 6 to 9 The adjusting mechanism 23 also includes a rotating shaft 231, with a limiting part 235 and a gear 234 fixedly mounted on the rotating shaft 231. The rotating shaft 231 is at least partially rotatably inserted into the receiving groove 215. In some embodiments, the limiting part 235 and the gear 234 can be fixedly sleeved on the rotating shaft 231 by welding, with the limiting part 235 and the gear 234 coaxial and rotating with the rotating shaft 231. In other embodiments, the limiting part 235 and the gear 234 can be fixedly installed on the rotating shaft 231 by bearing assembly or other fitting methods, so that the limiting part 235 and the gear 234 rotate together with the rotating shaft 231.

[0087] The adjusting mechanism 23 also includes a rotating component 232. One end of the rotating shaft 231 extends out of the through hole 213 and is connected to the rotating component 232. The other end of the rotating shaft 231, away from the rotating component 232, is fixedly connected to the limiting part 235. Thus, when the sliding assembly 20 is installed on the guide rod 13, the rotating component 232 is located outside the through hole 213 and spaced from the right side wall 2112 of the slider 21. By rotating the rotating component 232, the gear 234 meshes with the rack 131 and rotates, and the limiting part 235 rotates, causing the sliding assembly 20 to move on the rack 131. The rotating component 232 can be a knob, and the knob can be fixed to the rotating shaft 231 with screws. The end of the rotating shaft 231 where the knob is mounted has at least one flat surface. The knob is sleeved on the rotating shaft 231, and the mounting hole of the knob has another flat surface. The cooperation of the two flat surfaces ensures that when the rotating shaft 231 and the knob are connected, they will not rotate relative to each other, facilitating assembly.

[0088] Please see Figure 6 The limiting part 235 is cylindrical, and its diameter is larger than the outer diameter of the gear 234. Specifically, the radius of the gear 234 is smaller than the distance from the axis of the rotating shaft 231 to the upper surface 132 of the guide rod 13, and the radius of the limiting part 235 is larger than the distance from the axis of the rotating shaft 231 to the upper surface 132 of the guide rod 13. Therefore, when the sliding assembly 20 is installed on the guide rod 13, the limiting part 235 is located between the bottom surface of the blind hole 214 and the left surface 134 of the guide rod 13, thereby restricting the movement of the limiting part 235 along the axis of the rotating shaft 231, but not restricting the limiting part 235 from rotating with the gear 234, so that the slider 21 can move relative to the length direction of the guide rod 13.

[0089] Please see Figures 10 to 14 The sliding assembly 20 also includes a locking mechanism 24 disposed on the right side wall 2112 of the slider 21. The locking mechanism 24 includes a retaining member 241, which presses against the guide rod 13 to lock the slider 21 in the position of the guide rod 13 or moves away from the guide rod 13 to unlock the slider 21 in the position of the guide rod 13. Figure 12 As shown, the abutment 241 is away from the guide rod 13, and the slider 21 is in the unlocked state; Figure 14 As shown, the abutment 241 presses against the guide rod 13, and the slider 21 is in a locked state. It can be understood that the locking mechanism 24 is used to fix the sliding component 20 in its current position after it has moved into place, preventing it from moving further, thereby effectively fixing the interventional device 200 and preventing improper movement of the interventional device 200 during the operation from affecting the normal progress of the operation.

[0090] Specifically, the right side wall 2112 of the slider 21 has a positioning hole 217 that connects to the slide groove 211. The abutment 241 passes through the positioning hole 217 and moves along the axis of the positioning hole 217 to press against or move away from the guide rod 13. It is understood that the abutment 241 has threaded features and can be installed in the positioning hole 217 via a threaded connection. When it is necessary to fix the sliding assembly 20, the screwing depth of the abutment 241 in the positioning hole 217 can be controlled to press against the guide rod 13, preventing the slider 21 from moving. Of course, the locking mechanism 24 can also be provided on the left side wall 2111 of the slider 21, and correspondingly, the positioning hole is opened on the left side wall 2111 of the slider 21.

[0091] Please see Figure 15 and Figure 16 The locking mechanism 24 also includes an elastic element 242 connected to the abutment 241. When the sliding assembly 20 is installed on the guide rod 13, the elastic element 242 elastically abuts against the guide rod 13. In some embodiments, the elastic element 242 is a plunger elastic screw. Since the slider 21 moves on the guide rod 13, there is a fitting gap between the slider 21 and the guide rod 13. The plunger elastic screw at one end of the abutment 241 provides elastic force to abut against the guide rod 13, providing a certain frictional resistance, which can prevent the sliding assembly 20 from falling freely on the support frame 10, and at the same time reduce the swaying amplitude of the slider 21 on the support frame 10.

[0092] Furthermore, the supporting member 241 includes a mounting portion 2411 facing the slide groove 211 and a connecting portion 2412 facing away from the slide groove 211. The mounting portion 2411 is movably inserted into the positioning hole 217, and the connecting portion 2412 is connected to the end of the mounting portion 2411 facing away from the slide groove 211. The end of the mounting portion 2411 facing the slide groove 211 has a mounting hole for mounting the elastic member 242, and the elastic member 242 is partially accommodated in the mounting hole. The elastic member 242 is interference-fitted with the mounting hole, thereby ensuring that the elastic member 242 does not fall out of the mounting hole. The supporting member 241 has a threaded feature on the outer surface of the mounting portion 2411, and the mounting portion 2411 is threadedly connected to the positioning hole 217.

[0093] Please see Figures 10 to 14The mounting part 2411 has a stop structure 2413 protruding from one end facing the slide groove 211. The stop structure 2413 may be, but is not limited to, annular, and its outer diameter is larger than the inner diameter of the positioning hole 217. In some embodiments, the stop structure 2413 is annular. The slider 21 has a stop groove 2171 recessed on the circumference of the end of the positioning hole 217 facing the slide groove 211. The stop groove 2171 can be used to accommodate the stop structure 2413. When the abutment 241 unlocks the slider 21 to the position of the guide rod 13, the stop structure 2413 is in close contact with the bottom surface of the stop groove 2171, the sliding assembly 20 is in the unlocked state, and the sliding assembly 20 can move. The stop structure 2413 can be entirely housed in the stop groove 2171, preventing the stop structure 2413 from occupying the space of the slide groove 211. This avoids an excessive gap between the guide rod 13 and the inner surface of the right side wall 2112 of the slider 21, allowing the guide rod 13 to engage with the four inner surfaces of the side walls of the slider 21 to ensure smooth movement of the slider 21. When the abutment 241 locks the slider 21 in the position of the guide rod 13, the stop structure 2413 is in close contact with the guide rod 13, and the sliding assembly 20 is in a locked state.

[0094] It is understood that when the stop structure 2413 presses against the guide rod 13, causing the guide rod 13 to fit against the inner surface of the left side wall 2111 of the slider 21, a first gap exists between the stop structure 2413 and the bottom surface of the stop groove 2171. At this time, the holding member 241 locks the slider 21 in the position of the guide rod 13, and the sliding assembly 20 is in a locked state. When the stop structure 2413 is tightly attached to the bottom surface of the stop groove 2171, a second gap exists between the stop structure 2413 and the guide rod 13. At this time, the holding member 241 unlocks the slider 21 in the position of the guide rod 13, and the sliding assembly 20 is in an unlocked state. Preferably, the first gap and the second gap are equal, and the rotatable angle of the locking mechanism 24 can be determined according to the thread pitch of the thread on the outer surface of the mounting part 2411. The stop structure 2413 is designed to limit the rotation range of the locking mechanism 24, controlling the rotation angle of the locking mechanism 24 within a certain range. This prevents excessive rotation, which wastes time and makes it impossible to directly determine whether the rotation is in place. Excessive rotation during unlocking can also cause the locking mechanism 24 to detach. Preferably, the rotatable angle of the locking mechanism 24 is approximately 100°.

[0095] Please see Figure 15 and Figure 16The locking structure 24 also includes a locking member 243. The locking member 243 is located at the end of the supporting member 241 away from the elastic member 242. The locking member 243 is sleeved on the connecting portion 2412 of the supporting member 241, and the connecting portion 2412 and the locking member 243 can be connected by screws. The locking member 243 and the supporting member 241 are fixedly connected, allowing the locking member 243 and the supporting member 241 to rotate synchronously. Thus, by operating the locking member 243, the screwing depth of the supporting member 241 can be controlled to press against the guide rod 13, preventing the slider 21 from moving relative to the guide rod 13.

[0096] Furthermore, the locking member 243 includes a long handle end 2431 and a short handle end 2432, so that the orientation of the long handle end 2431 or the short handle end 2432 can be used to determine whether the sliding assembly 20 is in a locked or unlocked state. The radial cross-section of the connecting portion 2412 is a regular polygon, which allows adjustment of the orientation of the long handle end 2431 when the locking member 243 is installed, so that the orientation of the long handle ends 2431 of the multiple sliding assemblies 20 is consistent in the locked state. Specifically, when installing the locking mechanism 24, the abutment member 241 is first inserted into the positioning hole 217 through the inner surface of the right side wall 2112 of the slider 21, then the slider 21 is mounted on the guide rod 13, and after adjusting the orientation of the long handle end 2431, the locking member 243 is fitted onto the connecting portion 2412 of the abutment member 241 and fixedly connected by screws.

[0097] Due to manufacturing tolerances in the locking member 243 and the supporting member 241, the orientation of the long handle end 2431 inevitably differs between the sliding components 20 in the locked state. Therefore, the locking mechanism 24 needs to be able to adjust the orientation of the long handle end 2413 when locked. Preferably, the radial cross-section of the connecting portion 2412 is a regular hexagon, meaning that when the supporting member 241 is not rotating, the locking member 243 can be installed after a 60° fine-tuning adjustment each time. In principle, the more sides a regular polygon has, the smaller the adjustment angle each time; however, considering the impact on use and manufacturing costs, a regular hexagon is a more suitable shape.

[0098] In some embodiments, the interventional device control accessory 100 is made entirely of metal material. Preferably, the support frame 10 and the sliding assembly 20 are both made of biocompatible metal material, such as stainless steel.

[0099] Please see Figure 17 The rack 131 can be provided on the lower surface 133 of the guide rod 13. In this case, the rack 133 is multi-segmented. The rack 131 is not provided at the connection between the guide rod 13 and the connecting post 12. The connection between the guide rod 13 and the connecting post 12 is a detachable fixed connection. In this embodiment, the bracket 22 is provided on the upper side wall 219 of the slider 21, the rotating member 232 is close to the left side wall 2111 or the right side wall 2112 of the slider 21, and the locking mechanism 24 can be provided on the right side wall 2112 or the left side wall 2111 of the slider 21.

[0100] Please see Figure 18 The rack 131 can be located on the right surface 135 of the guide rod 13. In this case, the rack 131 can be multi-segmented. The rack 131 is not located at the connection between the guide rod 13 and the connecting post 12. The connection between the guide rod 13 and the connecting post 12 is a detachable fixed connection. In this embodiment, the bracket 22 is located on the upper side wall 219 of the slider 21. The rotating member 232 is located near the upper side wall 219 or the lower side wall 2110 of the slider 21. The locking mechanism 24 can be located on the upper side wall 219 or the lower side wall 2110 of the slider 21.

[0101] Please see Figure 19 The rack 131 can be located on the left surface 134 of the guide rod 13, in which case the rack 131 is a continuous segment. In this embodiment, the bracket 22 is located on the upper side wall 219 of the slider 21, the rotating member 232 is close to the upper side wall 219 or the lower side wall 2110 of the slider 21, and the locking mechanism 24 can be located on the upper side wall 219 or the lower side wall 2110 of the slider 21.

[0102] It should be noted that in all embodiments of this application, the upper surface 132 of the guide rod 13 faces away from the base plate 11, and the lower surface 133 faces the base plate 11; the upper sidewall 219 of the slider 21 faces away from the base plate 11, and the lower sidewall 2110 faces the base plate 11.

[0103] Please see Figure 20 The interventional medical system also includes a control table 300, which includes a desktop 310 with an adjustable angle relative to the horizontal direction. During surgery, the base plate 11 of the support frame 10 is connected to the desktop 310. Therefore, by adjusting the angle of the desktop 310 relative to the horizontal direction, the angle of the interventional device control accessory 100 can be adjusted, ensuring a suitable puncture angle for the interventional device 200 fixed to the interventional device control accessory 100. Specifically, a fixing member (not shown) is provided on the desktop 310. When the base plate 11 is connected to the desktop 310, the fixing member is located between the base plate 11 and the desktop 310. The presence of the fixing member increases the friction between the base plate 11 and the desktop 310, thus securing the base plate 11 to the desktop 310 through friction. In some embodiments, the fixing member is a silicone pad adapted to the desktop 310. In alternative embodiments, the fixing member may also be a pad made of other materials. The fasteners may also be a number of protrusions and / or recesses provided on the tabletop 310. In an alternative embodiment, the base plate 11 may also be connected to the tabletop 310 by means of screws, adhesive, etc. Preferably, the adjustable angle range of the tabletop 310 relative to the horizontal direction is 0 degrees to 30 degrees, to adapt to the puncture angle requirements of most surgeries.

[0104] It is understandable that the interventional device control accessory 100 itself has an inclined angle due to the structure of the support frame 10. Without the need for further adjustment of the puncture angle of the interventional device 200, the interventional device control accessory 100 can be directly placed on a platform for use.

[0105] The following describes the use of the interventional device control accessory 100, taking the mitral valve clip system as an example. First, the valve clip control device 210, the bending sheath 220, and the guide sheath 230 are respectively installed on the brackets 22 of the three sliding components 20. Then, the locking mechanism 24 of the sliding component 20 is loosened, allowing the sliding component 20 to move. Next, the rotating component 232 is rotated to drive the rotating shaft 231 to rotate, thereby causing the corresponding gear 234 to mesh with the rack 131, so that the sliding component 20 moves relative to the guide rod 13. The valve clip control device 210, the bending sheath 220, and / or the guide sheath 230 move along the guide rod 13 with the corresponding sliding component 20. Finally, when all parts of the interventional device 200 have moved to the appropriate position, the locking mechanism 24 is tightened.

[0106] Second Embodiment

[0107] Please refer to the following: Figure 6 , Figure 9 , Figure 21 as well as Figure 22 The second embodiment of this application provides an interventional device control accessory that, based on the interventional device control accessory 100 provided in the first embodiment, limits the thickness of the limiting portion 235b of the adjustment mechanism 23b. Specifically, the unilateral fitting clearance between the limiting portion 235b and the blind hole 214b ranges from 0.02mm to 0.15mm, the depth of the blind hole 214b is greater than or equal to the thickness of the limiting portion 235b, the thickness of the limiting portion 235b is proportional to the unilateral fitting clearance, and the thickness of the limiting portion 235b is greater than 1.15mm. In this way, the limiting part 235b is housed entirely in the blind hole 214b, which increases the supporting effect of the blind hole 214b on the limiting part 235b and prevents the rotating shaft 231b of the adjusting mechanism 23b from tilting towards the guide rod 13b relative to the axis of the blind hole 214b, which would reduce the meshing clearance between the gear 234b and the rack 131b and cause transmission jamming between the gear 234b and the rack 131b.

[0108] It is understandable that, to ensure the meshing clearance between gear 234b and rack 131b is not too small and causes transmission jamming, the tilt angle of the shaft 231b relative to the axis of the blind hole 214b is allowed to be less than 2°. Based on planar geometry, calculations show that the thickness of the limiting part 235b should be greater than 0.02 × 2 / sin2° = 1.15 mm to ensure smooth meshing between gear 234b and rack 131b, thereby ensuring that the sliding component 20b can move smoothly along the guide rod 13b in the unlocked state. Preferably, the single-sided fitting clearance between the limiting part 235b and the blind hole 214b is set to 0.05 mm to 0.1 mm, and the tilt angle of the shaft 231b relative to the axis of the blind hole 214b is allowed to be less than 1°. Calculations show that the thickness of the limiting part 235b is preferably greater than 0.05 × 2 / sin1° = 5.73 mm.

[0109] Furthermore, the larger the distance between the limiting part 235b and the gear 234b, the smaller the clearance between the gear 234b and the rack 131b. Therefore, the thickness of the limiting part 235b can be reasonably selected based on the distance between the limiting part 235b and the gear 234b.

[0110] Consistent with the first embodiment, in the second embodiment, the rack 131b can be disposed on one of the upper surface, lower surface, left surface or right surface of the guide rod 13b. The arrangement of the bracket, rotating member 232b and locking mechanism can refer to the implementation method in the first embodiment, and will not be repeated here.

[0111] Third Embodiment

[0112] Please refer to the following: Figure 6 , Figure 9 , Figure 23 as well as Figure 24 The interventional device control accessory provided in the third embodiment of this application has a similar structure to the interventional device control accessory 100 provided in the first embodiment. However, the structure of the adjustment mechanism 23c of the sliding component 20c in the third embodiment differs from the structure of the adjustment mechanism 23 of the sliding component 20 in the first embodiment. The structure of the adjustment mechanism 23c of the interventional device control accessory provided in the third embodiment will be described in detail below.

[0113] like Figure 24As shown, similar to the first embodiment, the adjustment mechanism of the third embodiment also includes a limiting part 235c and a gear 234c. The adjustment mechanism 23c also includes a stabilizing part 233c fixedly connected to the gear 234c, with the gear 234c located between the limiting part 235c and the stabilizing part 233c. Specifically, the adjustment mechanism 23c also includes a rotating shaft 231c and a rotating member 232c. The limiting part 235c, the gear 234c, and the stabilizing part 233c are fixedly sleeved on the rotating shaft 231c, and the rotating member 232c is connected to one end of the rotating shaft 231c that extends out of the through hole 213c.

[0114] In some embodiments, the stabilizing part 233c can be welded and fixedly sleeved onto the rotating shaft 231c, spaced apart from the rotating part 232c. The limiting part 235c, the gear 234c, and the stabilizing part 233c are coaxial and rotate with the rotating shaft 231c. In other embodiments, the stabilizing part 233c can be mounted on the rotating shaft 231c using bearing assembly or other assembly methods, so that the stabilizing part 233c rotates together with the rotating shaft 231c.

[0115] like Figure 23 As shown, the stabilizing part 233c is at least partially rotatably housed in the through hole 213c of the receiving groove 215c, with a clearance fit between the stabilizing part 233c and the through hole 213c. In this way, the through hole 213c supports the stabilizing part 233c, restricting its radial movement along the through hole 213c, preventing the rotating shaft 231c from tilting towards the guide rod 13c, and ensuring that the meshing clearance between the gear 234c and the rack 131c remains within a reasonable range, preventing transmission jamming between the gear 234c and the rack 131c. Specifically, the single-sided clearance between the stabilizing part 233c and the through hole 213c ranges from 0.02mm to 0.15mm, preferably from 0.05mm to 0.1mm. It is understandable that the limiting part 235c and the stabilizing part 233c are precisely matched with the blind hole 214c and the through hole 213c of the slider 21c, respectively, to achieve stable rotation of the adjusting mechanism 23c within the slider 21c.

[0116] When the sliding assembly 20c is installed on the guide rod 13c, the stabilizing part 233c and the limiting part 235c are located on opposite sides of the guide rod 13c. The limiting part 235c and the guide rod 13c are fitted with a clearance fit, and the stabilizing part 233c and the guide rod 13c are also fitted with a clearance fit. The guide rod 13c is clamped between the limiting part 235c and the stabilizing part 233c. The guide rod 13c provides certain support for the limiting part 235c and the stabilizing part 233c, making the adjusting mechanism 23c less prone to tilting and its rotation more stable.

[0117] When the sliding assembly 20c is installed on the guide rod 13c, the gear 234c meshes with the rack 131c and rotates, causing the gear 234c to move along the rack 131c. At the same time, it drives the limiting part 235c to rotate in the blind hole 214c, causing the limiting part 235c to tend to move along the length direction of the guide rod 13c. The stabilizing part 233c rotates in the through hole 213c, causing the stabilizing part 233c to tend to move along the length direction of the guide rod 13c. Since the blind hole 214c restricts the movement of the limiting part 235c and the through hole 213c restricts the movement of the stabilizing part 233c, both the limiting part 235c and the stabilizing part 233c exert a thrust on the slider 21c along the length direction of the guide rod 13c, so that the sliding assembly 20c can move on the guide rod 13c. Since the stabilizing part 233c and the limiting part 235c respectively push the opposite two side walls of the slider 21c (as shown in the figure, the right side wall 2112c and the left side wall 2111c) to move the sliding component 20c, the movement of the sliding component 20c is more stable and less strenuous.

[0118] In some embodiments, both the limiting part 235c and the stabilizing part 233c are cylindrical, with the diameter of the limiting part 235c larger than the outer diameter of the gear 234c, and the diameter of the stabilizing part 233c larger than the diameter of the limiting part 235c. This avoids jamming caused by the tilting of the rotating shaft 231c during the assembly and disassembly of the adjusting mechanism 23c, facilitating quick assembly and disassembly of the adjusting mechanism 23c. In other embodiments, the diameters of the limiting part 235c and the stabilizing part 233c can be the same, as long as both are larger than the diameter of the gear 234c, so that the limiting part 235c can be confined between the side walls of the guide rod 13c and the slider 21c without affecting the meshing of the gear 234c and the rack 131c.

[0119] Consistent with the first embodiment, in the third embodiment, the rack 131c can be disposed on one of the upper surface, lower surface, left surface, or right surface of the guide rod 13c. The arrangement of the bracket, rotating member 232c, and locking mechanism can refer to the implementation method in the first embodiment, and will not be repeated here. The third embodiment can also limit the thickness of the limiting part 235c as in the second embodiment, and will not be repeated here.

[0120] Fourth embodiment

[0121] Please refer to the following: Figure 6 , Figure 9 , Figure 25 as well as Figure 26 The interventional device control accessory provided in the fourth embodiment of this application has a similar structure to the interventional device control accessory 100 provided in the first embodiment. However, the structure of the adjustment mechanism 23d of the sliding component 20d in the fourth embodiment differs from the structure of the adjustment mechanism 23 of the sliding component 20 in the first embodiment. The structure of the adjustment mechanism 23d of the interventional device control accessory provided in the fourth embodiment will be described in detail below.

[0122] Similar to the first embodiment, the adjustment mechanism 23d in the fourth embodiment also includes a limiting part 235d and a gear 234d. The adjustment mechanism 23d further includes a stabilizing part 233d fixedly connected to the gear 234d, with the gear 234d located between the limiting part 235d and the stabilizing part 233d. The stabilizing part 233d is at least partially rotatably accommodated in the through hole 213d of the receiving groove 215d. Specifically, the adjustment mechanism 23d also includes a rotating shaft 231d and a rotating member 232d. The limiting part 235d, gear 234d, and stabilizing part 233d are fixedly sleeved on the rotating shaft 231d, and the rotating member 232d is connected to one end of the rotating shaft 231d extending out of the through hole 213d. In some embodiments, the stabilizing part 233d can be fixedly sleeved on the rotating shaft 231d by welding. The limiting part 235d, gear 234d, and stabilizing part 233d are coaxial and rotate with the rotation of the rotating shaft 231d. In other embodiments, the stabilizing part 233d can be mounted on the rotating shaft 231d using a bearing assembly or other assembly method, so that the stabilizing part 233d rotates together with the rotating shaft 231d.

[0123] In some embodiments, the guide rod 13d includes a first surface, on which a rack is disposed. The first surface may be the upper surface, lower surface, left surface, or right surface of the guide rod 13d; the following description uses the upper surface of the guide rod 13d as an example. The stabilizing part 233d is cylindrical, and its outer peripheral wall is in rotatable contact with the upper surface of the guide rod 13d. Specifically, the radius of the stabilizing part 233d is the distance from the axis of rotation 231d to the upper surface 132d of the guide rod 13d when the axis is in a horizontal position. The outer peripheral wall of the stabilizing part 233d contacts the upper surface of the guide rod 13d but does not restrict the stabilizing part 233d from rotating relative to the upper surface 132d of the guide rod 13d as the axis of rotation 231d rotates. In this way, the outer peripheral wall of the stabilizing part 233d rotates into contact with the upper surface of the guide rod 13d, so as to prevent the rotating shaft 231d from tilting towards the guide rod 13d, ensuring that the meshing clearance between the gear 234d and the rack 131d is within a reasonable range, and ensuring that there is no transmission jamming between the gear 234d and the rack 131d.

[0124] Consistent with the first embodiment, in the fourth embodiment, the rack 131d can be disposed on one of the upper, lower, left, or right surfaces of the guide rod 13d. The arrangement of the bracket, rotating member 232d, and locking mechanism can refer to the implementation method in the first embodiment, and will not be repeated here. The fourth embodiment can also limit the thickness of the limiting part 235d as in the second embodiment, and will not be repeated here.

[0125] Fifth embodiment

[0126] Please refer to the following: Figure 23 , Figure 24 , Figure 27 and Figure 28 The interventional device control accessory provided in the fifth embodiment of this application has a similar structure to the interventional device control accessory provided in the third embodiment. However, the structure of the adjustment mechanism 23e of the sliding component 20e in the fifth embodiment differs from that of the adjustment mechanism 23c of the sliding component 20c in the third embodiment. In the third embodiment, the stabilizing part 233c and the rotating part 232c of the adjustment mechanism 23c are separately spaced apart. In the fifth embodiment, the stabilizing part 233e and the rotating part 232e of the adjustment mechanism 23e are connected as a whole, that is, the stabilizing part 233e and the rotating part 232e are a single unit. The stabilizing part 233e is cylindrical, and part of the stabilizing part 233e is rotatably accommodated in the through hole 213e, while part of it extends out of the through hole 231e, to prevent the rotating part 232e from contacting the side wall of the slider and being unable to rotate. Consistent with the third embodiment, in this embodiment, the stabilizing part 233e and the through hole 213e are clearance-fitted to prevent transmission jamming between the gear 234c and the rack 131c.

[0127] In some embodiments, the stabilizing part 233e has an axial mounting hole and a radial mounting hole. The axial mounting hole is used to insert one end of the rotating shaft 231e, and the radial mounting hole is used to align with the mounting hole of the rotating shaft 231e. The rotating shaft 231e and the stabilizing part 233e are fixedly connected by fasteners such as screws and pins, thereby ensuring that the rotating shaft 231e can rotate with the rotating part 232e.

[0128] Furthermore, the rotating shaft 231e has a stepped position 236e in the axial direction. The axial distance from the end face of the rotating shaft 231e, which passes through the axial mounting hole of the stabilizing part 233e, to the stepped position 236e is equal to the depth of the axial mounting hole of the stabilizing part 233e. When the stabilizing part 233e and the rotating shaft 231e are installed together, the stepped position 236e contacts the end face of the stabilizing part 233e, making it easier for the radial mounting hole of the stabilizing part 233e to align with the mounting hole of the rotating shaft 231e. At the same time, it increases the contact area between the rotating shaft 231e and the stabilizing part 233e to improve the connection stability between the rotating shaft 231e and the stabilizing part 233e.

[0129] The above are the implementation methods of the embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the embodiments of this application, and these improvements and modifications are also considered to be within the protection scope of this application.

Claims

1. An interventional device control accessory, characterized in that, The interventional device control accessory includes: A support frame, the support frame including a guide rod, the guide rod having at least one rack along its length; and At least one sliding assembly, the sliding assembly including a slider and an adjustment mechanism detachably disposed on the slider, the adjustment mechanism including a limiting part and a gear fixedly connected to the limiting part; the slider has a sliding groove and a receiving groove communicating with the sliding groove, and the adjustment mechanism is detachably installed in the receiving groove; When the sliding assembly is installed on the guide rod, the guide rod passes through the slide groove, the slider is sleeved on the guide rod, the gear is received in the receiving groove and the slide groove and meshes with the rack, the limiting part is rotatably received in the receiving groove, and the limiting part is limited between the side wall of the guide rod and the slider; When the sliding component is separated from the guide rod, the adjusting mechanism can be separated from the slider.

2. The interventional device control accessory according to claim 1, characterized in that, The two ends of the receiving groove are respectively formed with a through hole and a blind hole, and the limiting part passes through the through hole and is rotatably received in the blind hole.

3. The interventional device control accessory according to claim 2, characterized in that, The adjustment mechanism also includes a rotating shaft, and the limiting part and the gear are both fixed on the rotating shaft. The rotating shaft is at least partially rotatably inserted into the receiving groove.

4. The interventional device control accessory according to claim 3, characterized in that, The adjustment mechanism also includes a rotating component, one end of the rotating shaft extends out of the through hole and is connected to the rotating component, and the other end of the rotating shaft away from the rotating component is fixedly connected to the limiting part.

5. The interventional device control accessory according to claim 3, characterized in that, The single-sided fitting clearance between the limiting part and the blind hole ranges from 0.02mm to 0.15mm. The depth of the blind hole is greater than or equal to the thickness of the limiting part. The thickness of the limiting part is proportional to the single-sided fitting clearance, and the thickness of the limiting part is greater than 1.15mm.

6. The interventional device control accessory according to claim 3, characterized in that, The slider is made of plastic or metal.

7. The interventional device control accessory according to claim 2, characterized in that, One of the blind hole and the through hole is located on the left side wall of the slider, and the other is located on the right side wall of the slider. The center lines of the through hole and the blind hole coincide.

8. The interventional device control accessory according to any one of claims 1-6, characterized in that, The limiting part is located between the guide rod and the left or right side wall of the slider.

9. The interventional device control accessory according to any one of claims 1-6, characterized in that, The receiving groove is provided with a gear assembly hole, which is connected to the sliding groove, and the gear passes through the gear assembly hole to mesh with the rack.

10. The interventional device control accessory according to any one of claims 1-6, characterized in that, The limiting part is cylindrical, and the diameter of the limiting part is larger than the outer diameter of the gear.

11. The interventional device control accessory according to any one of claims 3-6, characterized in that, The adjustment mechanism further includes a stabilizing part fixedly connected to the rotating shaft, the gear is located between the limiting part and the stabilizing part, the stabilizing part is at least partially rotatably accommodated in the through hole, and the stabilizing part and the through hole are clearance-fitted.

12. The interventional device control accessory according to claim 11, characterized in that, The single-sided clearance between the stabilizing part and the through hole ranges from 0.02mm to 0.15mm.

13. The interventional device control accessory according to claim 11, characterized in that, Both the limiting part and the stabilizing part are cylindrical. The diameter of the limiting part is larger than the outer diameter of the gear, and the diameter of the stabilizing part is larger than the diameter of the limiting part.

14. The interventional device control accessory according to any one of claims 3-6, characterized in that, The adjustment mechanism further includes a stabilizing part fixedly connected to the rotating shaft, the gear is located between the limiting part and the stabilizing part, the stabilizing part is at least partially rotatably accommodated in the through hole, and the guide rod is clamped between the limiting part and the stabilizing part.

15. The interventional device control accessory according to claim 14, characterized in that, Both the limiting part and the stabilizing part are cylindrical. The diameter of the limiting part is larger than the outer diameter of the gear, and the diameter of the stabilizing part is larger than the diameter of the limiting part.

16. The interventional device control accessory according to any one of claims 2-5, characterized in that, The adjusting mechanism further includes a stabilizing part fixedly connected to the gear, the gear being located between the limiting part and the stabilizing part, and the stabilizing part being at least partially rotatably accommodated in the through hole; The guide rod includes a first surface, the rack is disposed on the first surface, the stabilizing part is cylindrical, and the outer peripheral wall of the stabilizing part is in rotatable contact with the first surface.

17. The interventional device control accessory according to any one of claims 1-5, characterized in that, The sliding assembly further includes a locking mechanism disposed on the slider. The locking mechanism includes a retaining member that presses against the guide rod to lock the slider in the position of the guide rod or moves away from the guide rod to unlock the slider in the position of the guide rod.

18. The interventional device control accessory according to claim 17, characterized in that, The slider has a positioning hole that communicates with the slide groove. The abutment is inserted into the positioning hole and moves along the axis of the positioning hole to press against or move away from the guide rod.

19. The interventional device control accessory according to claim 18, characterized in that, The locking mechanism further includes an elastic element connected to the abutment member, the elastic element elastically abutting the guide rod.

20. The interventional device control accessory according to claim 19, characterized in that, The abutment includes a mounting portion facing the slide groove and a connecting portion facing away from the slide groove. The mounting portion is provided with a mounting hole, and the elastic element is partially accommodated in the mounting hole.

21. The interventional device control accessory according to claim 20, characterized in that, The locking mechanism further includes a locking member, which is sleeved on the connecting portion and is fixedly connected to the supporting member so that the locking member and the supporting member rotate synchronously.

22. The interventional device control accessory according to claim 20, characterized in that, The mounting part is threadedly connected to the positioning hole, and a stop structure is protruding from one end of the mounting part facing the slide groove. The slider is recessed in the circumferential side of the end of the positioning hole facing the slide groove. When the abutment locks the slider in position on the guide rod, the stop structure is in close contact with the guide rod; When the abutment unlocks the slider's position on the guide rod, the stop structure is in close contact with the bottom surface of the stop groove.

23. The interventional device control accessory according to claim 1, characterized in that, The sliding assembly also includes a bracket that is fixedly connected to the slider, the bracket being used for detachable connection of interventional instruments.

24. The interventional device control accessory according to claim 23, characterized in that, The support includes a U-shaped positioning frame for detachable connection with the interventional device. The inner side of the U-shaped positioning frame is a vertical plane, and the inner bottom surface is an arc surface. The length-to-height ratio of the U-shaped positioning frame is 3:

2.

25. The interventional device control accessory according to claim 1, characterized in that, The clearance between the guide rod and the inner surface of the side wall of the slider is in the range of 0.02mm to 0.15mm.

26. An interventional medical system, characterized in that, include: Interventional devices; as well as The interventional device control accessory according to any one of claims 1-25, wherein the interventional device is detachably connected to the sliding assembly.

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