A tool quick-mounting structure

Abstract

The utility model provides a kind of tool quick-mounting structure, comprising: tool joint;Connecting piece, connecting channel is opened in connecting piece, and tool joint is detachably set in connecting channel;Connecting piece has positioning part, and positioning part is movably set relative to connecting piece, and positioning part can move between locking position and release position;When positioning part moves to locking position, positioning part engages with tool joint, to limit tool joint to separate from connecting channel;When positioning part moves to release position, positioning part is separated from tool joint, to allow tool joint to separate from connecting channel, by setting movable positioning part, so that tool joint can be quickly switched between locking position and release position, the quick-mounting and quick-disassembly of tool are realized, and the efficiency of tool replacement in surgery is improved.

Description

Technical Field

[0001] This utility model relates to the field of surgical instrument connection technology, specifically to a tool quick-assembly structure. Background Technology

[0002] In recent years, navigation systems and surgical robots have been widely used in orthopedic surgery, significantly improving the precision, repeatability, and safety of the surgery. In these systems, surgical tools need to be quickly and stably connected to navigation trackers or robotic arm end effectors to ensure the accuracy of real-time intraoperative positioning or the reliable drive of powered tools. Currently, the industry practice is to use dedicated quick-change interfaces to connect trackers / robotic arms and powered tools. The core purpose of this approach is to achieve rapid tool replacement during surgery while ensuring connection rigidity and precision to meet the needs of different surgical steps. However, existing rotatable interfaces are difficult to maintain the same locking rigidity and center positioning at any rotation angle; they can be adapted to clamping structures of multiple diameters, and changes in the diameter of their positioning reference surface will directly introduce uncompensable positional deviations.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a tool quick-release structure to solve the problem that in related technologies, rotatable interfaces are difficult to maintain the same locking stiffness and center positioning at any rotation angle; it can adapt to clamping structures of multiple diameters, and the change in the diameter of its positioning reference surface will directly introduce a position deviation that is difficult to compensate for.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a tool quick-release structure is provided, comprising: a tool connector; a connector having a connection channel, wherein the tool connector is detachably disposed in the connection channel; the connector having a positioning part, the positioning part being movably disposed relative to the connector, the positioning part being movable between a locked position and a released position; when the positioning part moves to the locked position, the positioning part engages with the tool connector to restrict the tool connector from disengaging from the connection channel; when the positioning part moves to the released position, the positioning part separates from the tool connector to allow the tool connector to disengage from the connection channel.

[0006] Furthermore, the connector includes: a limiting ball, which is movably disposed relative to the connector; the limiting ball is movable between a locked position and a released position; when the limiting ball moves to the locked position, the limiting ball engages with the tool connector to prevent the tool connector from disengaging from the connection channel; when the limiting ball moves to the released position, the limiting ball disengages from the tool connector to allow the tool connector to disengage from the connection channel; the limiting ball forms a positioning portion.

[0007] Furthermore, the connector also includes: a sleeve extending along a first preset direction, a limiting ball movably disposed relative to the sleeve along the radial direction of the sleeve; a tool connector movably disposed within the sleeve; and a knob movably disposed relative to the sleeve, the knob having a first position and a second position; when the knob is in the first position, the knob does not limit the limiting ball; when the knob moves from the first position to the second position, the knob gradually pushes the limiting ball to abut against the tool connector.

[0008] Furthermore, the connector also includes: a slide rod, on which a groove extending along a preset arc is provided, the slide rod is movably disposed in the groove, and the slide rod is connected to the knob; when the knob is rotated, it drives the slide rod to move along the groove, while the knob moves along the axis of the sleeve.

[0009] Furthermore, the connector also includes: a connecting arm with a connecting channel, and a sleeve communicating with the connecting channel; and a spring fitted onto the sleeve, with both ends of the spring connected to the connecting arm and the knob, respectively.

[0010] Furthermore, the tool connector includes: a connector body extending along a second preset direction, the connector body being detachably disposed in the connection channel; an annular groove is provided on the connector body, and when the positioning part moves to the locking position, the positioning part is located in the annular groove to fix the connector body.

[0011] Furthermore, the tool connector also includes: an anti-rotation ring, which is installed on the connector body and has an anti-rotation groove extending along the direction of the connector body; and an anti-rotation post is provided in the connection channel, wherein the anti-rotation groove is movably positioned relative to the anti-rotation post when the connector body moves along the connection channel.

[0012] Furthermore, the annular groove is inclined on the side wall near the bottom of the connector body.

[0013] Furthermore, a limit channel is provided inside the knob, and the diameter of the limit channel gradually increases from the top to the bottom of the knob; when the limit ball is located in the limit channel, the limit ball is connected to the tool connector.

[0014] Furthermore, a spherical groove is provided on the sleeve, and a limiting ball is movably disposed in the spherical groove. Limiting protrusions are provided on both sides of the spherical groove.

[0015] Beneficial effects: 1. By setting a movable positioning part, the tool connector can quickly switch between the locked and released positions, realizing quick installation and removal of tools and improving the efficiency of tool replacement during surgery; at the same time, the engagement method between the positioning part and the tool connector ensures the stability of the connection and avoids positional deviation caused by loose connection, thereby improving the positioning accuracy and safety of the surgical navigation system.

[0016] 2. Through the cooperation of the knob and the sleeve, when the knob is moved to the second position, it pushes the limiting ball to abut against the tool connector, realizing a reliable locking mechanism and ensuring the rigidity of the connection; at the same time, the knob being in the first position allows the limiting ball to be released, making the tool connector easy to disassemble, simplifying the operation and improving the reliability of the connection, avoiding delays caused by tool replacement during the operation.

[0017] 3. By setting up a slide groove and slide rod, the rotational motion of the knob is converted into linear motion along the sleeve axis, thereby precisely controlling the position of the limit ball; this conversion mechanism ensures the smoothness and accuracy of the locking and releasing process, reduces operating force, improves user experience, and avoids connection instability caused by sudden movement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the tool quick-assembly structure used in this embodiment of the utility model; Figure 2 This is an exploded structural diagram of the tool quick-assembly structure used in this embodiment of the utility model; Figure 3 This is a cross-sectional schematic diagram of the tool quick-assembly structure used in an embodiment of this utility model; Figure 4 This is a first-view cross-sectional schematic diagram of the tool quick-assembly structure used in an embodiment of this utility model; Figure 5 This is a schematic diagram of the tool connector structure of the tool quick-release structure provided in this embodiment of the utility model.

[0019] The above figures include the following reference numerals: 1. Tool connector; 2. Connector; 3. Limit ball; 4. Sleeve; 5. Knob; 6. Slide rod; 7. Slide groove; 8. Connecting arm; 9. Spring; 10. Connector body; 11. Annular groove; 12. Anti-rotation ring; 13. Anti-rotation groove; 14. Anti-rotation post; 15. Limiting channel. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] According to an embodiment of this utility model, a quick-release tool structure is provided. Please refer to [link / reference]. Figures 1 to 5The device includes: a tool connector 1; a connector 2, the connector 2 having a connection channel, the tool connector 1 being detachably disposed in the connection channel; the connector 2 having a positioning part, the positioning part being movably disposed relative to the connector 2, the positioning part being movable between a locked position and a released position; when the positioning part moves to the locked position, the positioning part engages with the tool connector 1 to restrict the tool connector 1 from disengaging from the connection channel; when the positioning part moves to the released position, the positioning part separates from the tool connector 1 to allow the tool connector 1 to disengage from the connection channel.

[0022] By adopting the above technical solution and setting a movable positioning part, the tool connector 1 can quickly switch between the locked position and the released position, realizing quick installation and removal of the tool and improving the efficiency of tool replacement during surgery. At the same time, the engagement method between the positioning part and the tool connector 1 ensures the stability of the connection and avoids positional deviation caused by loose connection, thereby improving the positioning accuracy and safety of the surgical navigation system.

[0023] Please refer to Figure 2 and Figure 3 The connector 2 includes a limiting ball 3, which is movably disposed relative to the connector 2; the limiting ball 3 can move between a locked position and a released position; when the limiting ball 3 moves to the locked position, the limiting ball 3 engages with the tool connector 1 to prevent the tool connector 1 from disengaging from the connection channel; when the limiting ball 3 moves to the released position, the limiting ball 3 separates from the tool connector 1 to allow the tool connector 1 to disengage from the connection channel; the limiting ball 3 forms a positioning part.

[0024] By adopting the above technical solution, and using the limiting ball 3 as the positioning part, the limiting ball 3 engages with the tool connector 1 when locked, providing uniform contact force and multi-point support, thereby enhancing locking rigidity. At the same time, the movable design of the limiting ball 3 allows for consistent locking effect at any rotation angle, solving the problem of locking rigidity changing with angle in the prior art and ensuring the stability of the connection's center positioning.

[0025] Furthermore, multiple limit balls 3 can be set.

[0026] Please refer to Figure 2 The connector 2 further includes: a sleeve 4, which extends along a first preset direction, and a limiting ball 3 which is movably disposed relative to the sleeve 4 along the radial direction of the sleeve 4; a tool connector 1 which is movably disposed inside the sleeve 4; and a knob 5 which is movably disposed relative to the sleeve 4, and has a first position and a second position; when the knob 5 is in the first position, the knob 5 does not limit the limiting ball 3; when the knob 5 moves from the first position to the second position, the knob 5 gradually pushes the limiting ball 3 toward the tool connector 1 until the tool connector 1 abuts, and when the limiting ball 3 abuts the tool connector 1, the knob 5 is in the second position.

[0027] By adopting the above technical solution, through the cooperation of knob 5 and sleeve 4, when knob 5 moves to the second position, it pushes the limiting ball 3 to abut against the tool connector 1, realizing a reliable locking mechanism and ensuring the rigidity of the connection; at the same time, the position of knob 5 in the first position allows the limiting ball 3 to be released, making the tool connector 1 easy to disassemble, simplifying the operation and improving the reliability of the connection, avoiding delays caused by tool replacement during the operation.

[0028] Please refer to Figure 2 The connector 2 also includes a slide rod 6. The sleeve 4 has a slide groove 7 extending along a preset arc. The slide rod 6 is movably disposed in the slide groove 7. The slide rod 6 is connected to the knob 5. When the knob 5 is rotated, it drives the slide rod 6 to move along the slide groove 7, while the knob 5 moves along the axis of the sleeve 4.

[0029] By adopting the above technical solution, and by setting the slide groove 7 and the slide rod 6, the rotational motion of the knob 5 is converted into linear motion along the axis of the sleeve 4, thereby precisely controlling the position of the limit ball 3. This conversion mechanism ensures the smoothness and accuracy of the locking and releasing process, reduces the operating force, improves the user experience, and avoids connection instability caused by sudden movement.

[0030] Furthermore, the number of slide bars 6 is the same as the number of slide grooves 7, and preferably there are 3 slide bars 6.

[0031] Please refer to Figure 3 The connector 2 also includes: a connecting arm 8, which has a connecting channel, and the sleeve 4 communicates with the connecting channel; and a spring 9, which is sleeved on the sleeve 4, with both ends of the spring 9 connected to the connecting arm 8 and the knob 5 respectively.

[0032] By adopting the above technical solution, the spring force of the spring 9 automatically resets the knob 5 to the second position when the operator releases his hand, so that the limit ball 3 is in the locked position, which simplifies the operation steps; Specifically, the other end of the connecting arm 8 is detachably connected to the navigation tracker.

[0033] Please refer to Figure 2 The tool connector 1 includes: a connector body 10, which extends along a second preset direction and is detachably disposed in the connection channel; an annular groove 11 is provided on the connector body 10, and when the positioning part moves to the locking position, the positioning part is located in the annular groove 11 to fix the connector body 10.

[0034] By adopting the above technical solution, and by setting an annular groove 11 on the connector body 10, when the positioning part is located in the annular groove 11, the axial movement of the tool connector 1 is effectively restricted, providing reliable fixation; at the same time, the structure of the annular groove 11 allows locking at any circumferential position, ensuring the accuracy of center positioning and avoiding position deviations caused by changes in the reference plane.

[0035] Specifically, the connector body 10 is at least partially located inside the sleeve 4; when the limiting ball 3 moves to the locking position, at least part of the limiting ball 3 is located in the annular groove 11 to fix the connector body 10 and prevent the connector body 10 from moving axially.

[0036] Please refer to Figure 5 The tool connector 1 also includes: an anti-rotation ring 12, which is mounted on the connector body 10 and has an anti-rotation groove 13 extending along the direction of the connector body 10; an anti-rotation post 14 is provided in the connection channel, and the anti-rotation groove 13 is movably positioned relative to the anti-rotation post 14 when the connector body 10 moves along the connection channel.

[0037] By adopting the above technical solution, the tool connector 1 is prevented from rotating within the connection channel through the cooperation of the anti-rotation ring 12 and the anti-rotation post 14, thus ensuring the directional stability of the tool connector 1. This anti-rotation mechanism avoids positional deviation caused by rotation, improves surgical accuracy and repeatability, and reduces wear during connection.

[0038] Specifically, when the anti-rotation ring 12 is located in the connecting channel on the connecting arm 8, the annular groove 11 is correspondingly set with the limiting ball 3.

[0039] Please refer to Figure 5 The annular groove 11 is inclined on the side wall near the bottom of the connector body 10 so that the connector body 10 can be disengaged from the limiting ball 3.

[0040] By adopting the above technical solution, the sidewall of the annular groove 11 is inclined, which provides a guiding effect when the tool connector 1 is disengaged, so that the limiting ball 3 can be smoothly withdrawn from the annular groove 11, reducing wear and operating force; this design extends the service life of the structure, ensures the smoothness of the release process, and improves the efficiency of tool replacement.

[0041] Please refer to Figure 3 and Figure 4 A limiting channel 15 is provided inside the knob 5. The diameter of the limiting channel 15 gradually increases from the top to the bottom of the knob 5. When the knob moves upward, the knob 5 gradually contacts the limiting ball 3. When the limiting ball 3 is located in the limiting channel 15, the limiting ball 3 is connected to the tool connector 1.

[0042] By adopting the above technical solution and through the conical design of the limiting channel 15, the limiting ball 3 is gradually released or pressed when the knob 5 moves, thus realizing progressive control of the limiting ball 3. This progressive mechanism ensures the smoothness of the locking process and the thoroughness of the release, improves the reliability of the connection, and avoids the impact caused by sudden locking or releasing.

[0043] Furthermore, a spherical groove is provided on the sleeve 4, and the limiting ball 3 is movably disposed in the spherical groove. Limiting protrusions are provided on both sides of the spherical groove.

[0044] By adopting the above technical solution, the movement range of the limiting ball 3 is limited by the setting of the spherical groove and the limiting protrusion, preventing the limiting ball 3 from falling off; at the same time, the spherical groove ensures that the limiting ball 3 moves smoothly in the groove, provides a stable locking force, enhances the connection rigidity and durability, and reduces maintenance requirements.

[0045] Working principle: When the tool needs to be installed, the connector body 10 of the tool connector 1 is inserted along the connecting channel of the connecting arm 8. At this time, the anti-rotation groove 13 on the anti-rotation ring 12 cooperates with the anti-rotation post 14 in the connecting channel to prevent the connector body 10 from rotating, ensuring that the annular groove 11 on it can be accurately aligned with the limiting ball 3. Then, the user rotates the knob 5. This rotational movement moves in the arc-shaped groove 7 of the sleeve 4 through the slide rod 6 connected to it, and is converted into linear movement of the knob 5 along the axis of the sleeve 4, while compressing the spring 9. When the user releases the knob 5, the knob 5 moves downward under the action of the spring 9. The side wall of the limiting channel 15, whose internal diameter gradually decreases, begins to press the limiting ball 3, forcing the limiting ball 3 to move along the spherical groove in the sleeve 4. The tool moves radially inward until it is partially embedded in the annular groove 11 of the tool connector 1, thereby completing the axial locking of the connector body 10 and preventing it from coming out. Since the annular groove 11 is a circumferentially continuous structure, the tool connector 1 can be uniformly locked at any rotation angle, ensuring the consistency of connection rigidity and center positioning. When it is necessary to replace or remove the tool, rotate the knob 5 again. The knob 5 moves upward, and the diameter of its limiting channel 15 gradually increases, releasing the radial constraint on the limiting ball 3. At this time, the limiting ball 3 can move outward and exit from the annular groove 11. At the same time, with the guiding effect of the annular groove 11 near the inclined side wall at the bottom of the connector, the tool connector 1 can be smoothly pulled out of the connection channel, achieving rapid separation.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0047] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0048] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0049] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0050] The above description is only a preferred embodiment 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 this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A tool quick-assembly structure, characterized in that, include: Tool connector (1); The connector (2) has a connection channel, and the tool connector (1) is detachably disposed in the connection channel; the connector (2) has a positioning part, which is movably disposed relative to the connector (2), and the positioning part can move between a locked position and a released position; When the positioning part moves to the locking position, the positioning part engages with the tool connector (1) to prevent the tool connector (1) from disengaging from the connection channel; When the positioning part moves to the release position, the positioning part separates from the tool connector (1) to allow the tool connector (1) to disengage from the connection channel.

2. The tool quick-assembly structure according to claim 1, characterized in that, The connector (2) includes: A limiting ball (3) is movably disposed relative to the connecting member (2); the limiting ball (3) can move between a locked position and a released position; When the limiting ball (3) moves to the locking position, the limiting ball (3) engages with the tool connector (1) to prevent the tool connector (1) from disengaging from the connection channel; When the limiting ball (3) moves to the release position, the limiting ball (3) separates from the tool connector (1) to allow the tool connector (1) to disengage from the connection channel; the limiting ball (3) forms the positioning part.

3. The tool quick-assembly structure according to claim 2, characterized in that, The connector (2) further includes: A sleeve (4) extends along a first preset direction, and a limiting ball (3) is movably disposed relative to the sleeve (4) along the radial direction of the sleeve (4); the tool connector (1) is movably disposed inside the sleeve (4). A knob (5) is movably disposed relative to the sleeve (4). The knob (5) has a first position and a second position. When the knob (5) is in the first position, the knob (5) does not limit the limiting ball (3). When the knob (5) moves from the first position to the second position, the knob (5) gradually pushes the limiting ball (3) to abut against the tool connector (1).

4. The tool quick-assembly structure according to claim 3, characterized in that, The connector (2) further includes: The slide rod (6) has a groove (7) extending along a preset arc on the sleeve (4). The slide rod (6) is movably disposed in the groove (7). The slide rod (6) is connected to the knob (5). When the knob (5) is rotated, it drives the slide rod (6) to move along the groove (7), while the knob (5) moves along the axis of the sleeve (4).

5. The tool quick-assembly structure according to claim 4, characterized in that, The connector (2) further includes: Connecting arm (8), the connecting arm (8) is provided with the connecting channel, and the sleeve (4) is connected to the connecting channel; Spring (9), which is sleeved on the sleeve (4), with its two ends connected to the connecting arm (8) and the knob (5) respectively.

6. The tool quick-assembly structure according to claim 1, characterized in that, The tool connector (1) includes: The connector body (10) extends along a second preset direction and is detachably disposed in the connection channel; an annular groove (11) is provided on the connector body (10), and when the positioning part moves to the locking position, the positioning part is located in the annular groove (11) to fix the connector body (10).

7. The tool quick-assembly structure according to claim 6, characterized in that, The tool connector (1) further includes: an anti-rotation ring (12), which is installed on the connector body (10), and the anti-rotation ring (12) has an anti-rotation groove (13) extending along the connector body (10); an anti-rotation post (14) is provided in the connection channel, and when the connector body (10) moves along the connection channel, the anti-rotation groove (13) is movably provided relative to the anti-rotation post (14).

8. The tool quick-assembly structure according to claim 6, characterized in that, The annular groove (11) is inclined near the bottom of the connector body (10) on the side wall.

9. The tool quick-assembly structure according to claim 3, characterized in that, The knob (5) is provided with a limiting channel (15), and the diameter of the limiting channel (15) gradually increases from the top of the knob (5) to the bottom of the knob (5); when the limiting ball (3) is located in the limiting channel (15), the limiting ball (3) is connected to the tool connector (1).

10. The tool quick-assembly structure according to claim 3, characterized in that, The sleeve (4) has a spherical groove, and the limiting ball (3) is movably disposed in the spherical groove. Limiting protrusions are provided on both sides of the spherical groove.

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