Connecting structure and catheter adapter

Abstract

The utility model relates to a connecting structure and a catheter adapter, and the connecting structure comprises a rotary supporting piece which is constructed to be annular, the inner wall surface of the rotary supporting piece is used for abutting against a catheter supporting device, and the rotary supporting piece is constructed to be provided with a first missing part so that a conveying groove can be exposed; the connecting body comprises a transmission end and a butt joint end, the transmission end is used for being connected with the driving mechanism, and the butt joint end is matched with the rotary supporting piece in shape and used for being buckled with the rotary supporting piece; the butt joint end is further provided with a second missing part so that the conveying groove can be exposed. The sealing cover is matched with the rotary supporting piece in shape, and the sealing cover is used for being connected with the rotary supporting piece so that the rotary supporting piece can be rotationally connected to the connecting body. Through cooperation of the rotary supporting piece and the connecting body, the purpose of synchronous rotation of the rotary supporting piece and the catheter supporting device can be achieved while linear movement relative to the catheter supporting device is achieved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a connection structure and catheter adapter. Background Technology

[0002] Traditional vascular interventional surgery requires surgeons to operate instruments in the operating room for extended periods to perform the procedure, resulting in prolonged exposure to radiation and potential harm to their health. Furthermore, vascular interventional surgery heavily relies on the surgeon's experience, typically involving a long learning curve and requiring frequent, repetitive instrument delivery and adjustments to achieve optimal therapeutic results. However, this frequent and repetitive instrument delivery and adjustment leads to significant surgeon fatigue, and the precision of the procedure often fluctuates greatly. The procedures are also typically lengthy, which is detrimental to both the surgeon and the patient, and in severe cases, can cause numerous adverse events related to instrument operation. Therefore, there is an urgent need for a vascular interventional robot based on remote control or even AI (artificial intelligence) assistance to address these issues.

[0003] A typical vascular interventional robot comprises a remote control console, a robotic arm, an active power transmission chamber, and several passive adapters that work in conjunction with the instruments to remotely operate them. Routine vascular interventional surgeries often involve pushing and pulling handles or buttons to perform specific instrument functions. These functions include adjusting stent size, stent release and retrieval, catheter delivery and retraction, adjusting the diameter of the ablation catheter electrode loop, balloon catheter delivery and retraction, catheter tip bending, and other necessary instrument functions. Therefore, remote control of the push buttons can be achieved through a remotely controlled drive mechanism. The coupling structure that needs to be coupled with the push buttons must be able to move and rotate with them. This necessitates the design of a connection structure that bridges the drive mechanism and the coupling structure, enabling the vascular interventional robot to remotely control the instrument push buttons and perform other surgical operations. Utility Model Content

[0004] Based on this, embodiments of this application provide a connection structure and a catheter adapter. Through the cooperation of the rotating support and the connecting body, linear movement relative to the catheter support is achieved, while simultaneously enabling synchronous rotation of the rotating support and the catheter support.

[0005] A first aspect of this application provides a connection structure for supporting a catheter support, the catheter support having a delivery groove; the connection structure includes:

[0006] A rotating support member is constructed in a ring shape. The inner wall surface of the rotating support member is used to abut against the conduit support. The rotating support member is constructed with a first missing part to expose the delivery groove.

[0007] The connecting body includes a transmission end and a docking end. The transmission end is used to connect with the drive mechanism, and the docking end is adapted to the shape of the rotating support member and is used to engage with the rotating support member. The docking end also has a second missing part to expose the conveying groove.

[0008] A cover, adapted to the shape of the rotating support, is used to connect with the rotating support so that the rotating support is rotatably connected to the connecting body.

[0009] In one embodiment, the mating end of the connecting body is provided with a mounting hole for accommodating a portion of the rotating support member, such that the inner wall surface of the rotating support member is located within the mounting hole.

[0010] In one embodiment, the connecting body includes a connecting plate and a snap-fit ​​plate, the snap-fit ​​plate being disposed on one side of the connecting plate and arranged around the mounting hole;

[0011] A snap-fit ​​groove is formed between the snap-fit ​​plate and the connecting plate.

[0012] In one embodiment, the rotating support includes an annular support block, at least one end face of which is provided with an annular mating groove for accommodating the snap-fit ​​plate. The annular support block is rotatedly connected to the connecting body by fixing the cover to the annular support block.

[0013] In one embodiment, the cap is fixedly connected to the annular support block on the side facing the connecting plate;

[0014] At least a portion of the cap is located within the snap-fit ​​groove.

[0015] In one embodiment, the first missing portion is an open notch formed on the outer periphery of the annular support block;

[0016] The second missing portion is an clearance notch formed on one side of the connecting plate and the snap-fit ​​plate, and the clearance notch communicates with the mounting hole.

[0017] In one embodiment, the inner wall surface of the annular support block is provided with a plurality of support protrusions, which are distributed at intervals along the circumference of the annular support block, and the support protrusions are used to abut against the outer wall surface of the conduit support.

[0018] In one embodiment, the inner wall of the annular support block is provided with a bearing platform, which is disposed opposite to the open notch. The bearing platform is used to adapt and abut against the outer wall of the catheter support so as to rotate synchronously with the catheter support.

[0019] In one embodiment, the annular support block has an annular angle greater than 180° and less than 360°.

[0020] And / or, the ring angle of the snap-fit ​​plate is greater than 180° and less than 360°.

[0021] A second aspect of this application provides a catheter adapter, including the connection structure described in the above embodiments; and...

[0022] Support base;

[0023] A catheter support is disposed on the support base. The catheter support includes a rotating shaft that passes through the rotating support member and rotates synchronously with the rotating support plate.

[0024] In one embodiment, the support base includes at least one guide shaft, and the transmission end of the connecting body passes through the guide shaft;

[0025] The catheter support is constructed with interconnected receiving groove, catheter delivery groove and guidewire delivery groove, the extension direction of the catheter delivery groove and the guidewire delivery groove being consistent with the extension direction of the guide shaft;

[0026] Both the first missing portion and the second missing portion are used to expose the catheter delivery groove or the guide wire delivery groove.

[0027] The aforementioned connection structure and catheter adapter provide a connecting body, connecting its transmission end to a drive mechanism to drive linear movement. The connecting body's mating end is designed with an annular structure for engagement with an annular rotating support. To ensure effective connection, the rotating support is capped, allowing it to rotatably connect to the connecting body. The inner wall of the rotating support abuts against the catheter support. This example provides a rotating support that not only achieves linear movement relative to the catheter support through the movement of the connecting body but also allows for synchronous rotation between the rotating support and the catheter support. Furthermore, the first missing portion on the rotating support and the second missing portion on the connecting body expose the delivery groove, providing a channel for subsequent catheter or guidewire placement within the catheter support and preventing structural interference. This example's connection structure also provides stable support for the catheter support. The rotatable connection between the rotating support and the connecting body provides the basis for the entire catheter support's rotational operation, making instrument operation more flexible. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a catheter adapter provided according to some embodiments of this application.

[0029] Figure 2This is a schematic diagram of the overall structure of a catheter support provided according to some embodiments of this application.

[0030] Figure 3 This is a schematic diagram of the structure of a control handle provided according to some embodiments of this application.

[0031] Figure 4 This is a partial top view of a catheter adapter provided according to some embodiments of this application.

[0032] Figure 5 This is a partially enlarged structural schematic diagram of a catheter adapter provided according to some embodiments of this application.

[0033] Figure 6 This is a schematic diagram of the connection structure provided according to some embodiments of this application.

[0034] Figure 7 This is a schematic diagram of the structure of a connection body provided according to some embodiments of this application.

[0035] Figure 8 This is a structural schematic diagram of a rotating support member provided according to some embodiments of this application.

[0036] Figure 9 This is a schematic diagram of the structure of a cap provided according to some embodiments of this application.

[0037] Icon labels:

[0038] 10. Control handle; 11. Push button;

[0039] 20. Catheter support; 25. Rotating shaft; 21. Receiving groove; 23. Catheter delivery groove; 24. Guide wire delivery groove;

[0040] 30. Support base; 31. Guide shaft;

[0041] 220. Transmission assembly; 221. Rotating component; 222. Moving component; 230. Traction assembly; 240. Coupling assembly; 232. Traction rod;

[0042] 700. Connecting structure; 710. Rotating support component; 711. First missing part; 712. Annular support block; 713. Annular docking groove; 714. Support protrusion; 715. Bearing platform; 720. Connecting body; 721. Transmission end; 722. Dating end; 723. Second missing part; 724. Mounting hole; 725. Connecting plate; 726. Snap-fit ​​plate; 727. Snap-fit ​​groove; 730. Cover. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 this application. However, this application can be implemented 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 this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if 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. If 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. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] As described in the background section, when a push button is moved by a drive device, the coupling structure coupled to the push button needs to move or rotate with it. Therefore, the structure connecting the drive device and the coupling structure is crucial. The main reason for this problem is that the catheter support, which houses functional components such as control handles, catheters, and guidewires, can rotate under the drive of a certain drive device, thus achieving synchronous rotation of these components. During this rotation, the push button and bending wheel on the control handle also rotate. The drive devices (more precisely, the coupling structures connected to the drive devices) used to control the movement of the push button and the rotation of the bending wheel need to rotate as well. However, the transmission mechanism within the drive device is relatively fixed, making it difficult to keep up with the rotation. Therefore, there is an urgent need to provide a connection structure that can connect the transmission mechanism and the coupling structure, enabling the coupling structure to effectively couple with the push button and bending wheel while simultaneously rotating synchronously with the catheter support.

[0050] Based on the aforementioned problems, this application provides a connection structure and a catheter adapter that can provide stable support for the catheter support assembly. The rotatable connection between the rotating support and the connecting body provides a basis for the rotational operation of the entire catheter support, making the instrument operation more flexible. In addition, the design of the first and second missing parts ensures that the delivery groove is exposed, providing a channel for the subsequent delivery of catheters and guidewires and avoiding structural interference.

[0051] See Figures 1 to 6 As shown, Figure 1This is a schematic diagram of the overall structure of a catheter adapter provided according to some embodiments of this application. Figure 2 This is a schematic diagram of the overall structure of a catheter support provided according to some embodiments of this application. Figure 3 This is a schematic diagram of the structure of a control handle provided according to some embodiments of this application. Figure 4 This is a partial top view of a catheter adapter provided according to some embodiments of this application. Figure 5 This is a partially enlarged structural schematic diagram of a catheter adapter provided according to some embodiments of this application. Figure 6 This is a schematic diagram of a connection structure provided according to some embodiments of the present application. One embodiment of the present application provides a connection structure 700 for supporting a conduit support 20, the conduit support 20 being configured with a delivery groove; the connection structure 700 may include a rotating support 710, a connection body 720, and a cap 730.

[0052] The rotating support 710 is ring-shaped, and its inner wall surface is used to abut against the conduit support 20. The rotating support 710 has a first missing portion 711 to expose the delivery groove. The connecting body 720 includes a drive end 721 and a docking end 722. The drive end 721 is used to connect to the drive mechanism, and the docking end 722 is adapted to the shape of the rotating support 710 for engaging with it. The docking end 722 also has a second missing portion 723 to expose the delivery groove. The cover 730 is adapted to the shape of the rotating support 710 and is used to connect to the rotating support 710 so that the rotating support 710 is rotatably connected to the connecting body 720.

[0053] To clearly understand the application scenario of the connection structure 700 in this example, the surgical instrument drive device coupled to the push button 11 of the control handle 10 will be introduced first. This drive device can move the push button 11 to achieve functions such as adjusting the size of the stent, releasing and retrieving the stent, retracting the catheter, adjusting the diameter of the ablation catheter electrode ring, retracting the balloon catheter, adjusting the catheter tip, and other necessary instrument functions. Specifically, before using the surgical instrument drive device, the doctor needs to hold the control handle 10 to deliver instruments such as guidewires and catheters to the vicinity of the lesion. Then, the doctor places the control handle 10 on the operating table (which can be the support base 30 described below) near the patient, ensuring that the components on the control handle 10 (push button 11, bending wheel, etc.) are coupled to the external drive device. Finally, the surgical instrument drive device is remotely controlled by the surgical robot, thereby achieving remote control of the push button 11.

[0054] More specifically, the surgical instrument drive unit can be mounted on a transmission compartment supported by a robotic arm. A power compartment can be located at one end of the transmission compartment, primarily providing power to the surgical instrument drive unit to indirectly drive the coupled push button 11. The transmission assembly 220 for outputting torque can be mounted on the transmission compartment. For example, this transmission assembly 220 can function as a power input coupling. The power input coupling can receive power from the power compartment through the transmission assembly 220 within the transmission compartment (e.g., gear structure, synchronous belt, lead screw nut and slide rail, gear rack, etc.), thereby providing rotational power to the rotating component 221 within the transmission assembly 220.

[0055] Since the overall layout of the surgical instrument drive unit needs to consider the location of the transmission chamber (power output port) and the orientation of the control handle 10 (including the push button 11, bending wheel, and other components on it), this example provides a transmission assembly 220, a traction assembly 230, and a coupling assembly 240 to reduce the difficulty of adjusting the positions of the transmission chamber, control handle 10, and other components, and to reduce the probability of positional conflicts between components. This not only ensures efficient power transmission to the push button 11, but also makes the layout of the entire surgical instrument drive unit more rational, thus saving space.

[0056] The aforementioned transmission assembly 220 can be located on one side of the support base 30. Its main function is to convert the torque transmitted from the power compartment to the transmission assembly 220 into linear motion, which then drives the push button 11 to move. Specifically, the process of driving the push button 11 to move can be as follows: the transmission assembly 220 drives the rotating component 221 in the transmission assembly 220 to rotate, the rotating component drives the moving component 222 to move linearly, the moving component 222 drives the traction assembly 230 connected to it to move linearly, and at the same time, the coupling component 240 connected to the traction assembly 230 engages with the push button 11 of the control handle 10, and will drive the push button 11 to move under the drive of the traction assembly 230, so as to realize the purpose of remotely controlling the push button 11 to complete the instrument function operation.

[0057] The overall workflow of the surgical instrument drive device can be as follows: The surgeon places the handheld control handle 10 on the support base 30, and the coupling component 240 of the surgical instrument drive device located outside the support base 30 engages with the push button 11 of the control handle 10, locking the support base 30 to prevent the control handle 10 from dislodging from the support base 30. Next, the surgeon issues a command from the remote control console, activating the power chamber and transmitting power via the transmission chamber to the transmission component 220. The transmission component 220 drives the rotating part 221 to rotate. The rotational motion of the rotating part 221 is converted into linear motion by the moving part 222. The moving part 222 drives the traction component 230 to move, which in turn pulls or pushes the coupling component 240. The coupling component 240 then drives the push button 11 of the control handle 10 to move, thereby enabling various functional operations of the instrument, such as stent size adjustment, stent release and retrieval, and catheter delivery and retraction.

[0058] The traction assembly 230 includes a connecting structure 700 and a traction rod 232 in this example. The connecting structure 700 is fixedly connected to the moving part 222. One end of the traction rod 232 is connected to the connecting structure 700, and the other end is connected to the coupling assembly 240. The traction rod 232 is used to drive the push button 11 to move in the second direction.

[0059] Specifically, the design of the connecting structure 700 can, on the one hand, avoid the control handle 10 so that the positions of the moving part 222 and the pull rod 232 are more reasonable. On the other hand, the connecting structure 700 can provide support for the rotation of the control handle 10, that is, to separate the pull rod 232, the coupling component 240, etc. from the transmission component 220, the power mechanism, etc. at the other end of the connecting structure 700.

[0060] To better understand the purpose of the connection structure 700, the structure of the catheter support 20 needs to be described. The catheter support 20 is mounted on the support base 30 and can rotate under the drive of other driving devices, thereby rotating the control handle 10, catheter, guidewire, etc., housed within it. When the catheter support 20 rotates, the power mechanism and transmission assembly 220 in the above example do not move relative to the support base 30, while the traction rod 232 and coupling assembly 240 need to rotate synchronously with the catheter support 20 and the control handle 10. Therefore, the connection structure 700, which connects the moving part 222 and the traction rod 232, not only provides synchronization of the movement of the moving part 222 and the traction rod 232 (specifically, movement along the axial direction of the catheter), but also ensures that the traction rod 232 and the coupling assembly 240 can rotate synchronously with the catheter support 20. It can be seen that the connection structure 700 in this example ensures the synchronization and continuity of the transmission assembly 220 and the coupling assembly 240 during movement.

[0061] In this example, the transmission end 721 of the connecting body 720 is fixed to the moving member 222 and can move linearly following the moving member 222. The mating end 722 of the connecting body 720 can be C-shaped, or configured as an open ring structure, a missing ring structure, etc., so that the catheter support 20 can pass through the mating end 722 of the connecting body 720. The second missing portion 723 formed at the mating end 722 allows the delivery groove inside the catheter support 20 to be exposed, so as to place or remove catheters, guide wires, etc. from the catheter support 20 without interfering with the connecting structure 700.

[0062] The rotating support 710 is annular and its shape is adapted to the mating end 722 of the connecting body 720 to facilitate their mating and engagement. Since the rotating support 710 also has a first missing portion 711 for exposing the conveying groove (which can be an opening formed by cutting off a portion of the circumference of the annular structure), the annular rotating support 710 should specifically be an open ring structure or a missing ring structure. Since the connecting body 720 is fixedly connected to the moving member 222, the position of the connecting body 720 relative to the support base 30 remains unchanged (specifically, it will not rotate). Therefore, the inner wall surface of the rotating support 710 needs to abut against the conduit support 20. The aforementioned pull rod 232 is also fixed to one side of the rotating support 710, thereby achieving the purpose of the rotating support 710 driving the pull rod 232 to rotate together with the conduit support 20.

[0063] In addition, in order to achieve effective engagement between the rotating support 710 and the connecting body 720, that is, to ensure that the rotating support 710 can rotate infinitely on the connecting body 720 while also ensuring that the two are not easily detached, this example connects the cover 730 to the rotating support 710, thereby achieving the purpose of rotating the rotating support 710 to the connecting body 720.

[0064] It should be noted that the material of the inner wall of the rotating support 710 can be a material with self-lubricating properties, such as POM (polyoxymethylene) and PEEK (polyetheretherketone), to reduce the friction between the conduit support 20 and the rotating support 710, so as to ensure the smooth sliding of the rotating support 710 and the conduit support 20 when they move relative to each other.

[0065] In this application, a connecting body 720 is provided, and the transmission end 721 of the connecting body 720 is connected to a drive mechanism to drive the connecting body 720 to move linearly. The docking end 722 of the connecting body 720 is designed with an annular structure to facilitate engagement with the annular rotating support 710. To ensure effective connection between the two, a cap 730 is connected to the rotating support 710 so that the rotating support 710 is rotatably connected to the connecting body 720. The inner wall surface of the rotating support 710 is used to abut against the catheter support 20. The rotating support 710 provided in this example not only achieves linear movement relative to the catheter support 20 through the movement of the connecting body 720, but also achieves synchronous rotation between the rotating support 710 and the catheter support 20. In addition, the first missing part 711 on the rotating support 710 and the second missing part 723 on the connecting body 720 both allow the delivery groove to be exposed, providing a channel for subsequent placement of catheters or guide wires in the catheter support 20 and avoiding structural interference. The connection structure 700 provided in this example can also provide stable support for the catheter support 20. The rotatable connection between the rotating support 710 and the connecting body 720 provides a basis for the entire catheter support 20 to achieve rotational operation, making the instrument operation more flexible.

[0066] Below, we will combine the appendix Figure 1 - Appendix Figure 9 The specific structure of the connection structure 700 provided in the embodiments of this application will be described. Among them, Figure 7 This is a schematic diagram of the structure of a connection body provided according to some embodiments of this application. Figure 8 This is a structural schematic diagram of a rotating support member provided according to some embodiments of this application. Figure 9 This is a schematic diagram of the structure of a cap provided according to some embodiments of this application.

[0067] like Figure 7 As shown, in some embodiments, the mating end 722 of the connecting body 720 is provided with a mounting hole 724 for accommodating a portion of the rotating support 710, such that the inner wall surface of the rotating support 710 is located within the mounting hole 724.

[0068] Specifically, the mounting hole 724 is mainly designed to allow the conduit support 20 to pass through. Of course, for the rotating support 710 to rotate together with the conduit support 20, the conduit support 20 needs to abut against the inner wall surface of the rotating support 710. Therefore, in this example, the inner wall surface of the rotating support 710 is located within the mounting hole 724. For example, the inner wall surface (arc surface) of the rotating support 710 slightly protrudes from the wall surface of the mounting hole 724, so that the conduit support 20, passing through the mounting hole 724, first contacts the inner wall surface of the rotating support 710, avoiding contact with the connecting body 720 at the mounting hole 724 and preventing rotational obstruction.

[0069] like Figure 7 As shown, in some embodiments, the connecting body 720 includes a connecting plate 725 and a snap-fit ​​plate 726. The snap-fit ​​plate 726 is disposed on one side of the connecting plate 725 and is arranged around the mounting hole 724. A snap-fit ​​groove 727 is formed between the snap-fit ​​plate 726 and the connecting plate 725.

[0070] Specifically, the mounting hole 724 penetrates the surface of the connecting plate 725. A snap-fit ​​plate 726 is provided on the surface of the connecting plate 725, near the mounting hole 724. The snap-fit ​​plate 726 can be an open ring structure or a missing ring structure. For example, the snap-fit ​​plate 726 has an L-shaped cross-section, and the opening of the snap-fit ​​groove 727 formed between the snap-fit ​​plate 726 and the connecting plate 725 faces away from the mounting hole 724. This snap-fit ​​groove 727 is mainly used to accommodate the cover 730, so that the rotating support 710 is securely connected to the connecting body 720 through the fixed connection between the cover 730 and the rotating support 710.

[0071] It should be noted that the connecting plate 725 and the snap-fit ​​plate 726 can be welded, riveted, or integrally formed, and no restriction is placed here. In this example, the snap-fit ​​plate 726 restricts the installation position of the rotating support 710, enhances the constraint and positioning of the rotating support 710 by the connecting body 720, and prevents the rotating support 710 from undergoing axial displacement during rotation, ensuring the stability and reliability of the rotational motion and facilitating more precise instrument operation.

[0072] like Figure 8 As shown, in some embodiments, the rotating support 710 includes an annular support block 712, at least one end face of which is provided with an annular mating groove 713. The annular mating groove 713 is used to accommodate the snap-fit ​​plate 726, and the annular support block 712 and the connecting body 720 are rotated by fixing the cover 730 to the annular support block 712.

[0073] Specifically, the cross-sectional shape of the annular support block 712 can be U-shaped, and it can be formed by casting or forging. The size and shape of the annular mating groove 713 can be determined according to the size of the snap-fit ​​plate 726 to ensure the dimensional accuracy of the annular mating groove 713, thereby ensuring that the snap-fit ​​plate 726 can be accurately installed therein. At the same time, it is also necessary to ensure that the annular support block 712 can move linearly closely following the connecting body 720, avoiding the problem that the annular support block 712 needs to fill the gap between the connecting body 720 and the connecting body 720 before it can follow the movement.

[0074] Then, the cap 730 and the annular support block 712 can be connected by bolts, snap-fit ​​connections, or other methods, thereby strengthening the connection tightness and rotational flexibility between the annular support block 712 and the connecting body 720. This also prevents the annular support block 712 from detaching from the connecting body 720 during rotation. This connection method makes the rotating support 710 rotate more smoothly and stably, reducing the decrease in precision caused by rotational friction or loosening.

[0075] It should be noted that, in order to reduce the rotational friction between the annular support block 712 and the snap-fit ​​plate 726, materials with self-lubricating properties, such as POM (polyoxymethylene) and PEEK (polyetheretherketone), can be selected, but there are no specific restrictions.

[0076] like Figure 6 and Figure 9 As shown, in some embodiments, the cover 730 is fixedly connected to the annular support block 712 on the side facing the connecting plate 725; at least a portion of the cover 730 is located within the snap-fit ​​groove 727.

[0077] Specifically, the opening of the U-shaped annular support block 712 faces the connecting plate 725 and is fastened to the L-shaped snap-fit ​​plate 726. The cover 730 can be partially placed in the snap-fit ​​groove 727 and fixedly connected to the side of the annular support block 712 facing the connecting plate 725, thereby achieving the purpose of rotating the annular support plate in the connecting body 720. The cover 730 provided in this example not only serves a fixing function but also does not interfere with other structures, further enhancing the integrity and stability of the connecting structure 700.

[0078] like Figure 7 and Figure 8 As shown, in some embodiments, the first missing portion 711 is an open notch formed on the outer periphery of the annular support block 712; the second missing portion 723 is an avoidance notch formed on one side of the connecting plate 725 and the snap-fit ​​plate 726, and the avoidance notch communicates with the mounting hole 724.

[0079] Specifically, for the first missing part 711, when manufacturing the annular support block 712, an open notch can be formed on its outer periphery by machining. The shape and size of the open notch should be determined according to the position and size of the conveying groove on the guide support 20 to ensure that the conveying groove is accurately exposed. For the second missing part 723, when manufacturing the connecting plate 725 and the snap-fit ​​plate 726, an avoidance notch is machined on one side of both, and the avoidance notch should communicate with the mounting hole 724. The avoidance notch can be precisely machined using a milling machine or electrical discharge machining to ensure that it corresponds to the position of the conveying groove, so as to expose the conveying groove.

[0080] In the initial state, that is, during the process of placing the control handle 10, catheter, and guidewire onto the catheter support 20, the opening notch and the clearance notch overlap so that the delivery groove on the catheter support 20 can be exposed, so that the catheter and guidewire can be smoothly placed on the catheter support 20.

[0081] In this example, the precise design of the first missing part 711 and the second missing part 723 ensures that the delivery channel can be fully exposed, avoiding structural obstruction, improving the convenience and smoothness of the doctor's operation, while ensuring the compactness and simplicity of the structure.

[0082] like Figure 8 As shown, in some embodiments, the inner wall surface of the annular support block 712 is provided with a plurality of support protrusions 714, which are distributed at intervals along the circumference of the annular support block 712. The support protrusions 714 are used to abut against the outer wall surface of the conduit support 20.

[0083] Specifically, the number, size, and distribution of the support protrusions 714 can be reasonably determined based on the dimensions of the annular support block 712 and the conduit support 20, ensuring that the multiple support protrusions 714 are evenly distributed circumferentially. During processing, it is necessary to ensure that the support protrusions 714 have consistent height and smooth surfaces. For example, a self-lubricating material can be used to form the support protrusions 714. While ensuring good contact between the multiple support protrusions 714 and the outer wall surface of the conduit support 20, it is also necessary to ensure the smoothness of the relative linear movement of the support protrusions 714 on the conduit support 20.

[0084] like Figure 8 As shown, in some embodiments, the inner wall of the annular support block 712 is provided with a bearing platform 715, which is disposed opposite to the open notch. The bearing platform 715 is used to adapt and abut against the outer wall of the catheter support 20 so as to rotate synchronously with the catheter support 20.

[0085] Specifically, the support platform 715 can be configured as a plane, and correspondingly, the conduit support 20 also has a plane on one side of the support platform 715. The mutual contact of the two planes allows the conduit support 20 to be fitted and inserted into the annular support block 712, enabling synchronous rotation of both. Furthermore, the support platform 715 is designed to withstand a certain axial force, thereby enhancing the axial stability of the entire connection structure 700.

[0086] In some embodiments, the annular support block has an annular angle greater than 180° and less than 360°. Specifically, the presence of the first missing portion 711 avoids the operational inconvenience caused by the complete closure of the annular support block; that is, the annular angle of the annular support block needs to be less than 360°. If the annular angle of the annular support block is set to 180° or less, there is a risk that the annular support block may easily detach from the connecting body 720. For example, the annular angle of the annular support block is 270°.

[0087] Similarly, in one example, the annular angle of the snap-fit ​​plate 726 is greater than 180° and less than 360°. Due to the presence of the second missing portion 723, the annular angle of the snap-fit ​​plate 726 is less than 360°, avoiding the operational inconvenience caused by the complete closure of the connecting body 720. If the annular angle of the annular support block were set to less than 180°, it would easily lead to the annular support block detaching from the connecting body 720. In the example, the annular angle of the snap-fit ​​plate 726 is 270°.

[0088] Based on the same inventive concept, embodiments of this application also provide a catheter adapter, such as... Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the catheter adapter includes the connection structure 700, support base 30, and catheter support 20 as described in the above embodiments. The catheter support 20 is disposed on the support base 30 and includes a rotating shaft 25, which passes through the rotating support member 710 and rotates synchronously with the rotating support plate.

[0089] Understandably, the catheter support 20 is movably mounted on the support base 30. It is mainly used to load and stabilize the ablation catheter. Its internal structure includes a control handle 10 receiving groove 21, a bending wheel loading groove, a catheter delivery groove 23, and a guide wire delivery groove 24. Moreover, to ensure the stability of the control handle 10 placed on the catheter support 20, the catheter support 20 is also provided with a fixing buckle. This fixing buckle can be located on one side of the receiving groove 21. When the operator adapts and embeds the control handle 10 into the receiving groove 21, the control handle 10 is locked by engaging the fixing buckle, thereby ensuring the stability of the ablation catheter after loading and preventing the ablation catheter from shifting position during the operation.

[0090] The ablation catheter is placed within the delivery groove of the rotating shaft 25, which is connected to the support base 30. The rotation of the rotating shaft 25 drives the ablation catheter to rotate. In this example, the delivery groove has a certain depth to restrict the ablation catheter through the groove wall, preventing the ablation catheter from falling out of the delivery groove during the operation, thereby improving the accuracy of the surgical operation and reducing possible deviation and shaking of the ablation catheter during delivery and rotation.

[0091] like Figure 2 and Figure 4 As shown, in some embodiments, the support 30 includes at least one guide shaft 31, and the transmission end 721 of the connecting body 720 passes through the guide shaft 31; the catheter support 20 is constructed with an interconnected receiving groove 21, a catheter delivery groove 23 and a guide wire delivery groove 24, the extending directions of the catheter delivery groove 23 and the guide wire delivery groove 24 are consistent with the extending direction of the guide shaft 31; the first missing part 711 and the second missing part 723 are both used to expose the catheter delivery groove 23 or the guide wire delivery groove 24.

[0092] Specifically, the transmission end 721 of the connecting body 720 is provided with a through hole, which can slide and cooperate with the guide shaft 31 to ensure that the transmission end 721 can slide and rotate smoothly on the guide shaft 31.

[0093] In addition, the catheter support 20 in this example is long and extends along the axial direction of the catheter. The catheter delivery groove 23, the receiving groove 21 and the guidewire delivery groove 24 are arranged sequentially from the distal end (away from the surgeon) to the proximal end (closer to the surgeon) of the catheter support 20.

[0094] In this example, the guide shaft 31 provides guidance and support for the transmission end 721 of the connecting body 720, making the connecting body 720 more stable during movement and ensuring the accuracy of power transmission.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A connection structure characterized by comprising: A catheter support device is used to support a catheter support, the catheter support having a delivery groove; the connection structure includes: A rotating support member is constructed in a ring shape. The inner wall surface of the rotating support member is used to abut against the conduit support. The rotating support member is constructed with a first missing part to expose the delivery groove. The connecting body includes a transmission end and a docking end. The transmission end is used to connect with the drive mechanism, and the docking end is adapted to the shape of the rotating support member and is used to engage with the rotating support member. The docking end also has a second missing part to expose the conveying groove. A cover, adapted to the shape of the rotating support, is used to connect with the rotating support so that the rotating support is rotatably connected to the connecting body.

2. The connection structure according to claim 1, characterized in that The connecting body has a mounting hole at its mating end. The mounting hole is used to accommodate part of the rotating support member so that the inner wall surface of the rotating support member is located within the mounting hole.

3. The connection structure according to claim 2, characterized in that The connecting body includes a connecting plate and a snap-fit ​​plate. The snap-fit ​​plate is disposed on one side of the connecting plate and is arranged around the mounting hole. A snap-fit ​​groove is formed between the snap-fit ​​plate and the connecting plate.

4. The connection structure according to claim 3, characterized in that The rotating support includes an annular support block, at least one end face of which is provided with an annular mating groove. The annular mating groove is used to accommodate the snap-fit ​​plate, and the rotational connection between the annular support block and the connecting body is achieved by fixing the cover to the annular support block.

5. The connection structure according to claim 4, characterized in that The cover is fixedly connected to the annular support block on the side facing the connecting plate; At least a portion of the cap is located within the snap-fit ​​groove.

6. The connection structure according to claim 4 or 5, characterized in that The first missing portion is an open notch formed on the outer periphery of the annular support block; The second missing portion is an clearance notch formed on one side of the connecting plate and the snap-fit ​​plate, and the clearance notch communicates with the mounting hole.

7. The connection structure according to claim 4 or 5, characterized by The inner wall of the annular support block is provided with a plurality of support protrusions, which are distributed at intervals along the circumference of the annular support block. The support protrusions are used to abut against the outer wall of the conduit support.

8. The connection structure according to claim 6, wherein The inner wall of the annular support block is provided with a bearing platform, which is disposed opposite to the open notch. The bearing platform is used to adapt and abut against the outer wall of the catheter support so as to rotate synchronously with the catheter support.

9. The connecting structure according to claim 4 or 5, characterized by The annular support block has an annular angle greater than 180° and less than 360°. And / or, the ring angle of the snap-fit ​​plate is greater than 180° and less than 360°.

10. A catheter adapter, characterized by Including the connection structure described in any one of claims 1-9; and, Support base; A catheter support is disposed on the support base. The catheter support includes a rotating shaft that passes through the rotating support member and rotates synchronously with the rotating support member.

11. The conduit adapter of claim 10, wherein, The support base includes at least one guide shaft, and the transmission end of the connecting body passes through the guide shaft; The catheter support is constructed with interconnected receiving groove, catheter delivery groove and guidewire delivery groove, the extension direction of the catheter delivery groove and the guidewire delivery groove being consistent with the extension direction of the guide shaft; Both the first missing portion and the second missing portion are used to expose the catheter delivery groove or the guide wire delivery groove.

Images