Catheter adjustment mechanism and catheter drive device

Abstract

The application relates to a catheter adjusting mechanism and a catheter driving device. The catheter adjusting mechanism comprises a first wheel, a second wheel and a knob. The first wheel is arranged on one side of the catheter along a first direction, and the first direction is a direction perpendicular to the axial direction of the catheter. The second wheel is arranged on the other side of the catheter along the first direction. The knob is connected to the second wheel. The second wheel has a first state of abutting the outer circumferential surface of the first wheel to clamp the catheter and a second state of being separated from the first wheel. The knob is configured to rotate and move the second wheel along the first direction to switch the second wheel between the first state and the second state. The catheter adjusting mechanism provided by the application only needs to rotate the knob to drive the first wheel or the second wheel to move along the first direction, adjusts the gap between the first wheel and the second wheel, adjusts the clamping force on the catheter, and only needs to install the catheter between the first wheel and the second wheel. The knob can clamp the catheter by rotating, and the operation steps are simple and convenient to use.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a catheter adjustment mechanism and a catheter driving device. Background Technology

[0002] Guided by a digital subtraction angiography (DSA) machine, a surgical robot controls a guidewire within the blood vessel to reach the lesion site through advance, retreat, and rotation. A catheter is then advanced along the guidewire to the lesion for diagnosis and treatment. In related techniques, catheter actuation involves first mounting the catheter on a clamp, securing it, and then using a sliding assembly to move the catheter. However, the clamp's large and complex structure makes catheter installation cumbersome and inconvenient. Summary of the Invention

[0003] Therefore, it is necessary to provide a catheter adjustment mechanism to address the problem of inconvenient catheter installation.

[0004] A catheter adjustment mechanism, the catheter adjustment mechanism comprising:

[0005] The first wheel is used to be disposed on one side of the catheter along a first direction, which is a direction perpendicular to the axial direction of the catheter;

[0006] The second round is used to be positioned on the other side of the conduit along the first direction;

[0007] The knob is connected to the second wheel;

[0008] The second wheel has a first state in which it abuts against the outer peripheral surface of the first wheel to clamp the conduit, and a second state in which it is separated from the first wheel. The knob is configured to rotate to move the second wheel along the first direction so that the second wheel switches between the first state and the second state.

[0009] In one embodiment, a transmission assembly is further included, through which the knob is connected to the second wheel, the transmission assembly comprising:

[0010] A separation wheel is connected to the knob, and a lever is eccentrically mounted on the separation wheel;

[0011] Mounting component, the second wheel is mounted on the mounting component, the mounting component is provided with a guide groove extending in a second direction, the lever extends into the guide groove, the second direction forms an angle with the first direction;

[0012] The lever on the knob in the rotating state can slide within the guide groove to drive the mounting component to move along the first direction.

[0013] In one embodiment, the mounting component includes:

[0014] The second wheel is mounted on the fixed base;

[0015] A limiting slider is disposed between the separating wheel and the fixed base and is connected to the fixed base. The limiting slider is provided with the guide groove.

[0016] In one embodiment, the limiting slider is provided with a groove extending along the first direction;

[0017] The transmission assembly further includes a limiting seat clamped between the limiting slider and the fixed seat. The limiting seat is provided with a slide rail extending along the first direction. The slide rail and the slide groove are slidably engaged to restrict the movement of the limiting slider other than in the first direction.

[0018] In one embodiment, the limiting seat is provided with a limiting groove at one end near the first wheel along the first direction, the limiting groove being used to accommodate the conduit to limit the conduit.

[0019] In one embodiment, the limiting slider includes a body and an extension connected to each other. The extension extends from the body toward the first wheel along the first direction. The body is provided with the guide groove, and the extension is provided with the sliding groove.

[0020] When in the first state, the extension can cover the side of the guide groove away from the fixed seat to block the guide groove.

[0021] In one embodiment, the limiting seat has an opening at one end away from the limiting groove, the fixing seat has a through hole, the body is cylindrical, and a protruding rod is eccentrically provided on the end face of the body away from the separating wheel. The protruding rod passes through the opening and the through hole in sequence.

[0022] In one embodiment, the transmission assembly further includes an elastic element and a support, wherein the fixed seat is elastically connected to the support via the elastic element, and the elastic element is used to drive the fixed seat to move along the first direction toward the direction of the first wheel by means of its own rebound force.

[0023] In one embodiment, the knob is provided with a protrusion protruding toward the release wheel;

[0024] The transmission assembly also includes a limiting plate located between the knob and the separating wheel. The knob rod passes through the limiting plate and the separating wheel in sequence. The limiting plate is provided with a limiting slide. The protrusion extends into the limiting slide and can slide within the limiting slide.

[0025] The guide groove and the lever are set at a 90° angle, the limiting slide is arc-shaped, and the central angle corresponding to the limiting slide is greater than 90°;

[0026] When the knob rotates at an angle less than or equal to 90°, the elastic element transmits the thrust to the protrusion through the fixed seat, so that the protrusion drives the knob to rotate in the opposite direction to the initial position;

[0027] When the knob is rotated at an angle greater than 90°, the thrust causes the protrusion to abut against the side wall of the limiting slide, restricting the protrusion from rotating in the opposite direction, thereby locking the knob.

[0028] This application also provides a catheter driving device, including a driving mechanism and the catheter adjustment mechanism described above, wherein the driving mechanism includes a drive source connected to the first wheel drive source;

[0029] When in the first state, the drive source is used to drive the first wheel to rotate, so as to drive the conduit to move by the friction between the first wheel and the second wheel.

[0030] The aforementioned catheter adjustment mechanism has a first wheel and a second wheel respectively positioned on both sides of the catheter along a first direction. The adjustment mechanism's knob is connected to the second wheel. Rotating the knob moves the connected second wheel along the first direction, causing relative movement between the first and second wheels, thus switching the driven wheel between a first state and a second state. When the second wheel is in the first state, its outer circumference abuts against the first wheel, clamping the catheter. When the second wheel is in the second state, it moves away from the first wheel, adjusting the gap between them, facilitating catheter installation or removal. The catheter adjustment mechanism provided in this application only requires rotating the knob to move either the first or second wheel along the first direction, thereby adjusting the gap between them and the clamping force on the catheter. Simply install the catheter between the first and second wheels and rotate the knob to clamp it; the operation is simple and convenient. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of the duct drive device from a first-view perspective, as provided in this application.

[0032] Figure 2 This is a structural schematic diagram of the conduit driving device from a second perspective, as provided in this application.

[0033] Figure 3 This is a structural schematic diagram of the conduit driving device from a second perspective, as provided in this application.

[0034] Figure 4This is a first-view structural diagram of a second wheel mounted on a transmission assembly, as provided in this application.

[0035] Figure 5 This is a structural schematic diagram from a second perspective showing the installation of a second wheel on a transmission assembly, as provided in this application.

[0036] Figure 6 This is a schematic diagram of the structure of the knob provided in this application connected to the separation wheel and the limit slider.

[0037] Figure 7 This is a schematic diagram of the separation wheel provided in this application.

[0038] Figure 8 A schematic diagram of the limiting slider provided in this application.

[0039] Figure 9 A schematic diagram of the limiting seat provided in this application.

[0040] Figure 10 A schematic diagram of the structure of the mounting base provided in this application.

[0041] Figure 11 A schematic diagram of the structure of the knob connected to the limiting plate, the separating wheel and the limiting slider provided in this application.

[0042] Figure 12 A schematic diagram of the limiting plate provided in this application.

[0043] Figure 13 This is a schematic diagram of the force structure of the protrusion provided in this application at various positions within the limiting slide.

[0044] In the picture:

[0045] 100. First round;

[0046] 200. The second round;

[0047] 300. Knob; 310. Raised part;

[0048] 400. Transmission assembly; 410. Separator wheel; 411. Lever; 412. Mounting hole; 420. Fixing base; 421. Through hole; 422. Mounting groove; 430. Limiting slider; 431. Body; 4311. Guide groove; 4312. Protruding rod; 432. Extension; 4321. Slide groove; 440. Limiting seat; 441. Slide rail; 442. Limiting groove; 443. Opening; 450. Elastic element; 460. Support; 470. Limiting plate; 471. Limiting slide rail;

[0049] 500. Drive mechanism; 510. Drive source; 520. First coupling;

[0050] 600. Feedback mechanism; 610. Second coupling; 620. Encoder;

[0051] 700, catheter. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] This application proposes a catheter adjustment mechanism, such as Figures 1 to 3 As shown, the catheter adjustment mechanism includes a first wheel 100, a second wheel 200, and a knob 300. The first wheel 100 is disposed on one side of the catheter 700 along a first direction, which is perpendicular to the axial direction of the catheter 700. The second wheel 200 is disposed on the other side of the catheter 700 along the first direction. The knob 300 is connected to the second wheel 200. The second wheel 200 has a first state in which it abuts against the outer peripheral surface of the first wheel 100 to clamp the catheter 700, and a second state in which it is separated from the first wheel 100. The knob 300 is configured to rotate to move the second wheel 200 along the first direction, so that the second wheel 200 switches between the first state and the second state.

[0059] The aforementioned catheter adjustment mechanism has a first wheel 100 and a second wheel 200 respectively positioned on both sides of the catheter 700 along a first direction. A knob 300 of the adjustment mechanism is connected to the second wheel 200. By rotating the knob 300, the knob drives the connected second wheel 200 to move along the first direction, causing relative movement between the first wheel 100 and the second wheel 200 along the first direction, thus switching the driven wheel between a first state and a second state. When the second wheel 200 is in the first state, the outer circumferential surface of the second wheel 200 abuts against the first wheel 100, thereby clamping the catheter 700. When the second wheel 200 is in the second state, the second wheel 200 moves away from the first wheel 100, adjusting the gap between the first wheel 100 and the second wheel 200, facilitating the installation or removal of the catheter 700. The catheter adjustment mechanism provided in this application only requires rotating the knob 300 to drive the first wheel 100 or the second wheel 200 to move in the first direction, thereby adjusting the gap between the first wheel 100 and the second wheel 200 and adjusting the clamping force on the catheter 700. Simply install the catheter 700 between the first wheel 100 and the second wheel 200, and rotate the knob 300 to clamp or loosen the catheter 700. The operation steps are simple and convenient to use.

[0060] It should be noted that, of the two gears, 100 in the first gear and 200 in the second gear, one is the driving gear and the other is the driven gear. Knob 300 is simply connected to the driven gear. The following example uses the second gear, 200, as the driven gear.

[0061] In some embodiments, such as Figures 4 to 6 The conduit adjustment mechanism also includes a transmission assembly 400. The knob 300 is connected to the second wheel 200 via the transmission assembly 400. The transmission assembly 400 includes a separating wheel 410 and a mounting component. The separating wheel 410 is connected to the knob 300, and a lever 411 is eccentrically mounted on the separating wheel 410. The second wheel 200 is mounted on the mounting component, which has a guide groove 4311 extending in a second direction. The lever 411 extends into the guide groove 4311, and the second direction forms an angle with the first direction. When the knob 300 is rotating, the lever 411 can slide within the guide groove 4311, thereby moving the mounting component along the first direction. By setting the transmission assembly 400, the knob 300 is connected to the second wheel 200. When the knob 300 rotates, the transmission assembly 400 drives the second wheel 200 to move along the first direction, thus moving it closer to or further away from the first wheel 100, allowing the second wheel 200 to switch between a first state and a second state. The knob 300 is connected to the release wheel 410, the second wheel 200 is mounted on the mounting piece, and the lever 411 extends into the guide groove 4311, thereby connecting the release wheel 410 and the mounting piece. When the knob 300 is rotated, the lever 411 can slide within the guide groove 4311, thereby driving the mounting piece and the second wheel 200 to move along a first direction. Specifically, the angle between the second direction and the first direction is 90°.

[0062] Preferably, such as Figure 7 As shown, a mounting hole 412 is provided at the center of the separating wheel 410. The knob 300 rod of the knob 300 passes through the mounting hole 412, thereby connecting the separating wheel 410 and the knob 300. The separating wheel 410 and the knob 300 are coaxially arranged.

[0063] Specifically, as shown in the figure, Figure 5 , Figure 8 ,as well as Figure 10 The mounting components include a fixed base 420 and a limiting slider 430. The second wheel 200 is mounted on the fixed base 420. The limiting slider 430 is located between the separating wheel 410 and the fixed base 420 and is connected to the fixed base 420. The limiting slider 430 is provided with a guide groove 4311. The limiting slider 430 is positioned between the separating wheel 410 and the fixed base 420, and the separating wheel 410 is connected to the fixed base 420 through the limiting slider 430. The lever 411 on the separating wheel 410 is inserted into the guide groove 4311 of the limiting slider 430. By rotating the knob 300, because the lever 411 is eccentrically set on the separating wheel 410, the lever 411 can slide not only in the guide groove 4311 along the second direction but also along the first direction, thereby driving the second wheel 200 to move along the first direction.

[0064] Specifically, such as Figure 5 , Figure 6 as well as Figure 8 The limiting slider 430 is provided with a groove 4321 extending along a first direction; the transmission assembly 400 also includes a limiting seat 440 clamped between the limiting slider 430 and the fixed seat 420. The limiting seat 440 is provided with a slide rail 441 extending along the first direction. The slide rail 441 and the groove 4321 are slidably engaged to restrict the movement of the limiting slider 430 other than in the first direction. By providing a slide rail 441 on the limiting seat 440 and a groove 4321 on the limiting slider 430, with the groove 4321 and the slide rail 441 slidably engaged, the limiting slider 430 can only slide along the slide rail 441, that is, the limiting slider 430 can only slide in the first direction.

[0065] Specifically, such as Figure 5 , Figure 6 as well as Figure 9 The limiting seat 440 is provided with a limiting groove 442 at one end near the first wheel 100 along the first direction. The limiting groove 442 is used to accommodate the conduit 700 and limit the conduit 700. By providing the limiting groove 442 on the limiting seat 440 and placing the conduit 700 in the limiting groove 442, the conduit 700 is limited so that it can only move along the second direction.

[0066] Specifically, such as Figure 5 , Figure 6 as well as Figure 8 The limiting slider 430 includes a body 431 and an extension 432 connected to each other. The extension 432 extends from the body 431 toward the first wheel 100 in a first direction. The body 431 is provided with a guide groove 4311, and the extension 432 is provided with a sliding groove 4321. When in the first state, the extension 432 can cover the side of the guide groove 4311 away from the fixed seat 420 to block the guide groove 4311. When the knob 300 is rotated, the limiting slider 430 can slide along the first direction, and the extension 432 extends from the body 431 along the first direction toward the first wheel 100. When the extension 432 slides along the first direction toward the first wheel 100, it covers the limiting groove 442, blocks the limiting groove 442, and further limits the guide tube 700. At this time, the second wheel 200 is in the first state. When the extension 432 slides along the first direction away from the first wheel 100, it opens the limiting groove 442. At this time, the second wheel 200 is in the second state.

[0067] Specifically, such as Figure 5 , Figure 6 as well as Figure 9 The limiting seat 440 has an opening 443 at one end opposite to the limiting groove 442, and the fixed seat 420 has a through hole 421. The body 431 is cylindrical, and a protruding rod 4312 is eccentrically provided on the end face of the body 431 opposite to the separating wheel 410. The protruding rod 4312 passes through the opening 443 and the through hole 421 in sequence. The opening 443 on the limiting seat 440 and the protruding rod 4312 passing through the opening 443 and the through hole 421 in sequence clamp the limiting seat 440 between the limiting slider 430 and the fixed seat 420.

[0068] It should be noted that in some embodiments, such as Figure 6 As shown, the transmission assembly 400 provided in this application includes a knob 300, a separating wheel 410, a limiting slider 430, a limiting seat 440, and a fixing seat 420, arranged sequentially from top to bottom. The knob 300 rod of the knob 300 passes through the mounting hole 412 of the separating wheel 410, thereby connecting the knob 300 and the separating wheel 410; the lever 411 of the separating wheel 410 extends into the guide groove 4311 on the body 431 of the limiting slider 430, thereby connecting the separating wheel 410 and the limiting slider 430; the sliding groove 4321 on the extension 432 of the limiting slider 430 and the slide rail 441 of the limiting seat 440 are slidably engaged; the protruding rod 4312 on the body 431 of the limiting slider 430 passes through the opening 443 of the limiting seat 440 and the through hole 421 of the fixing seat 420, thereby connecting the limiting slider 430, the limiting seat 440, and the fixing seat 420.

[0069] Specifically, such as Figure 10As shown, the mounting base 420 is provided with a mounting groove 422 for mounting the second wheel 200, and the second wheel 200 and the groove wall of the mounting groove 422 are rotatably engaged.

[0070] like Figure 5 As shown, the transmission assembly 400 also includes an elastic element 450 and a support 460. The fixed seat 420 is elastically connected to the support 460 via the elastic element 450. The elastic element 450 is used to drive the fixed seat 420 to move along the first direction towards the first wheel 100 by its own rebound force. With the fixed seat 420 and the support 460 connected via the elastic element 450, when the knob 300 is rotated, the mounting component drives the fixed seat 420 and the release wheel 410 to move along the first direction away from the first wheel 100. At this time, the elastic element 450 is compressed, and the knob 300 stops rotating. Without external force, the elastic element 450 resets by its own rebound force, thereby driving the mounting component and the fixed seat 420 to move along the first direction towards the first wheel 100.

[0071] like Figures 11 to 13 As shown, the knob 300 has a protrusion 310 protruding towards the release wheel 410; the transmission assembly 400 also includes a limiting disk 470 located between the knob 300 and the release wheel 410, the knob rod of the knob 300 passes through the limiting disk 470 and the release wheel 410 in sequence, the limiting disk 470 is provided with a limiting slide 471, the protrusion 310 extends into the limiting slide 471 and can slide within the limiting slide 471; the guide groove 4311 and the lever 411 are arranged at a 90° angle, limiting... The limiting slide 471 is arc-shaped, and the central angle corresponding to the limiting slide 471 is greater than 90°. When the knob 300 rotates at an angle less than 90°, the elastic element 450 transmits the thrust to the protrusion 310 through the fixing seat 420, so that the protrusion 310 drives the knob 300 to rotate in the opposite direction to the initial position. When the knob 300 rotates at an angle greater than 90°, the thrust causes the protrusion 310 to abut against the side wall of the limiting slide 471, restricting the reverse rotation of the protrusion 310, so as to lock the knob 300. A limiting plate 470 is provided between the knob 300 and the separating wheel 410. The protrusion 310 of the knob 300 extends into the limiting slide 471 of the limiting plate 470. When the knob 300 rotates within the range of 0°-90°, the thrust provided by the elastic element 470 is transmitted to the limiting slide 430 through the fixed seat 420. The limiting slide 430 then transmits the thrust to the separating wheel 410, which in turn transmits it to the protrusion 310 of the knob 300. This allows the protrusion 310 and the knob 300 to rotate in opposite directions back to their initial positions (e.g., ...). Figure 12 (The first and second structural diagrams from left to right are shown). When the knob 300 is rotated more than 90°, the thrust transmitted by the elastic element 470 causes the protrusion 310 to abut against the side wall of the limiting slide 471 (as shown). Figure 12(As shown in the third structural diagram from left to right), thereby restricting the rotation of the protrusion 310 and the knob 300, and locking the knob 300.

[0072] Please return to the reference. Figure 1 and Figure 2 This application also provides a catheter driving device, including a driving mechanism 500 and the aforementioned catheter adjustment mechanism. The driving mechanism 500 includes a driving source 510 connected to a first wheel 100. When in a first state, the driving source 510 drives the first wheel 100 to rotate, thereby driving the catheter 700 to move through the friction between the first wheel 100 and the second wheel 200. As mentioned above, the first wheel 100 is the driving wheel, and the second wheel 200 is the driven wheel. When the knob 300 is connected to the second wheel 200, the driving source 510 is connected to the first wheel 100. The knob 300 drives the second wheel 200 to be in the first state, thereby clamping the catheter 700. The driving source 510 drives the first wheel 100 to rotate, thereby driving the catheter 700 to move through the friction between the first wheel 100 and the second wheel 200.

[0073] Specifically, such as Figure 1 and Figure 2 As shown, the drive mechanism 500 also includes a first coupling 520, through which the output end of the drive source 510 is connected to the first wheel 100. It is understood that connecting two shafts via a coupling is a conventional technique in this field, so the specific connection structure and method will not be described again.

[0074] More specifically, such as Figure 1 As shown, the drive mechanism 500 also includes a first gear set, which includes a first bevel gear and a second bevel gear that can mesh. The first bevel gear is sleeved on the output end of the drive source 510, and the second bevel gear is sleeved on the end of the first coupling 520 opposite to the first wheel 100. The drive source 510 and the first coupling 520 are connected through the first gear set.

[0075] Specifically, the drive mechanism 500 of the conduit 700 also includes a feedback mechanism 600, which includes an encoder 620 connected to the second wheel 200. The encoder 620 is used to calculate the movement distance of the conduit 700 based on the number of rotations of the second wheel 200. The drive source 510 is connected to the first wheel 100, and the knob 300 and encoder 620 are connected to the second wheel 200. When the drive source 510 drives the first wheel 100 to rotate, it drives the conduit 700 to rotate. The rotation of the conduit 700 drives the second wheel 200 to rotate. The encoder 620 collects the number of rotations of the second wheel 200 and transmits this information to the controller, which calculates the movement distance of the conduit 700.

[0076] Specifically, such as Figure 1 and Figure 2As shown, the feedback mechanism 600 also includes a second coupling 610, and the second wheel 200 is connected to the encoder 620 via the first coupling 520.

[0077] More specifically, such as Figure 1 As shown, the feedback mechanism 600 also includes a second gear set, which includes a third bevel gear and a fourth bevel gear that can mesh. The third bevel gear is sleeved on the encoder 620, and the fourth bevel gear is sleeved on the end of the second coupling 610 away from the second wheel 200. The second gear set connects the second coupling 610 and the encoder 620.

[0078] 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.

[0079] 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 catheter adjustment mechanism, characterized by, The catheter adjusting mechanism comprises: a first wheel (100) arranged on one side of the catheter (700) along a first direction, the first direction being a direction perpendicular to the axial direction of the catheter (700); a second wheel (200) arranged on the other side of the catheter (700) along the first direction; a knob (300) connected to the second wheel (200); the second wheel (200) has a first state of abutting against the outer circumferential surface of the first wheel (100) to clamp the catheter (700), and a second state of being separated from the first wheel (100), the knob (300) is configured to rotate to move the second wheel (200) along the first direction, so as to switch the second wheel (200) between the first state and the second state; further comprising a transmission assembly (400), the knob (300) is connected to the second wheel (200) through the transmission assembly (400), the transmission assembly (400) comprises: a separation wheel (410) connected to the knob (300), an eccentrically arranged lever (411) on the separation wheel (410); a mounting member, the second wheel (200) is mounted on the mounting member, the mounting member is provided with a guide groove (4311) extending along a second direction, the lever (411) extends into the guide groove (4311), and the second direction forms an angle with the first direction; the lever (411) on the knob (300) in a rotating state can slide in the guide groove (4311) to drive the mounting member to move along the first direction; the mounting member comprises: a fixed seat (420), the second wheel (200) is mounted on the fixed seat (420); a limiting sliding block (430) arranged between the separation wheel (410) and the fixed seat (420) and connected to the fixed seat (420), the limiting sliding block (430) is provided with the guide groove (4311); the limiting sliding block (430) is provided with a sliding groove (4321) extending along the first direction; the transmission assembly (400) further comprises a limiting seat (440) clamped between the limiting sliding block (430) and the fixed seat (420), the limiting seat (440) is provided with a sliding rail (441) extending along the first direction, and the sliding rail (441) and the sliding groove (4321) are in sliding fit to limit the movement of the limiting sliding block (430) along directions other than the first direction.

2. The catheter adjustment mechanism of claim 1, wherein, one end of the limiting seat (440) close to the first wheel (100) along the first direction is provided with a limiting groove (442) for accommodating the catheter (700) to limit the catheter (700).

3. The catheter adjustment mechanism of claim 2, wherein, The limiting sliding block (430) comprises a body (431) and an extension (432) connected to each other, the extension (432) extends from the body (431) towards the first wheel (100) along the first direction, the body (431) is provided with the guide groove (4311), and the extension (432) is provided with the sliding groove (4321); When in the first state, the extension (432) can cover one side of the limiting groove (442) away from the fixing base (420) to block the limiting groove (442).

4. The catheter adjustment mechanism of claim 3, wherein, The limiting seat (440) is provided with an opening (443) at one end away from the limiting groove (442), the fixing base (420) is provided with a through hole (421), the body (431) is in a cylindrical shape, an eccentric protruding rod (4312) is arranged on an end surface of the body (431) away from the separating wheel (410), and the protruding rod (4312) sequentially passes through the opening (443) and the through hole (421).

5. The catheter adjustment mechanism of claim 1, wherein, The transmission assembly (400) further comprises an elastic member (450) and a support (460), the fixing base (420) is elastically connected to the support (460) through the elastic member (450), and the elastic member (450) is used for driving the fixing base (420) to move along the first direction towards the first wheel (100) through the elastic force of the elastic member (450).

6. The catheter adjustment mechanism of claim 5, wherein, The knob (300) is provided with a protruding part (310) protruding towards the separating wheel (410); The transmission assembly (400) further comprises a limiting disc (470) between the knob (300) and the separating wheel (410), a knob rod of the knob (300) sequentially passes through the limiting disc (470) and the separating wheel (410), the limiting disc (470) is provided with a limiting sliding groove (471), the protruding part (310) extends into the limiting sliding groove (471) and can slide in the limiting sliding groove (471); The guide groove (4311) and the shifting rod (411) are arranged at an angle of 90°, the limiting sliding groove (471) is in an arc shape, and a central angle corresponding to the limiting sliding groove (471) is greater than 90°; When the rotating angle of the knob (300) is less than or equal to 90°, the elastic member (450) transmits a pushing force to the protruding part (310) through the fixing base (420) to make the protruding part (310) drive the knob (300) to reversely rotate to an initial position; When the rotating angle of the knob (300) is greater than 90°, the pushing force makes the protruding part (310) abut against a side wall of the limiting sliding groove (471) to limit the reverse rotation of the protruding part (310) and lock the knob (300).

7. A catheter driving device comprising a driving mechanism (500) and the catheter adjusting mechanism according to any one of claims 1-6, and the driving mechanism (500) is connected to the first wheel (100) and comprises a driving source (510). When in the first state, the driving source (510) is configured to drive the first wheel (100) to rotate, so as to drive the catheter (700) to move through the friction force between the first wheel (100) and the second wheel (200).

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