An extended U-shaped sleeve suitable for orthopedic surgical robot

Abstract

The utility model relates to a kind of extension formula U cannula suitable for orthopedics surgical robot, including U cannula body, and the extension assembly of detachably installed in the rear end of U cannula body;Annular groove is provided on the rear end outer wall of U cannula body;Extension assembly includes the extension sleeve of U cannula body rear end, the side wall of extension sleeve is installed with the press bar in its axial direction, the middle part of press bar is hinged with extension sleeve, the front end of press bar is provided with the clamping block that extends to its inside and can be inserted into annular groove, the inside of rear end of press bar is provided with spring.The utility model can realize orthopedics robot surgery and orthopedics mirror surgery combination, increase the range of robot surgery, reduce the difficulty of surgery, improve the accuracy and high efficiency of orthopedics mirror surgery.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to an extended U-shaped cannula suitable for orthopedic surgical robots. Background Technology

[0002] Currently, orthopedic robots are developing rapidly. Many hospitals have introduced orthopedic robots to perform more precise and efficient surgeries. Robotic surgery uses robotic arms for guided positioning, thereby improving surgical accuracy. The accuracy of robots is generally around 1mm, much more precise than manual operation. However, orthopedic robots are currently mostly used only for screw placement, offering limited benefits for other orthopedic procedures. Combining orthopedic robots with orthopedic endoscopic surgery would significantly improve the precision and efficiency of minimally invasive orthopedic surgery.

[0003] In orthopedic endoscopic surgery, a U-tube cannula is almost always used to place the orthopedic endoscope. The U-tube cannula is crucial for minimally invasive orthopedic surgery. Currently, the length of U-tubes on the market is generally around 150mm, while the length of a U-tube compatible with orthopedic robots needs to be at least 180mm. Otherwise, the U-tube cannot be integrated with the orthopedic surgical robot. However, the working length of the orthopedic endoscope is fixed. Directly extending the length of the U-tube would prevent it from being compatible with the orthopedic endoscope for surgical procedures. Therefore, existing U-tubes cannot achieve a combination of orthopedic robotic surgery and orthopedic endoscopic surgery, thus limiting the precision of minimally invasive orthopedic surgery. Utility Model Content

[0004] The purpose of this invention is to provide an extended U-tube suitable for orthopedic surgical robots, in order to solve the problem that the U-tube cannot simultaneously meet the requirements of both orthopedic robots and orthopedic endoscopes.

[0005] The extended U-sleeve of this utility model, applicable to orthopedic surgical robots, is implemented as follows:

[0006] An extended U-tube for use in orthopedic surgical robots includes a U-tube body and an extension assembly detachably mounted at the rear end of the U-tube body.

[0007] An annular groove is provided on the outer wall of the rear end of the U-tube body;

[0008] The extension assembly includes an extension sleeve fitted onto the rear end of the U-shaped sleeve body. A pressing rod is installed on the side wall of the extension sleeve in its axial direction. The middle part of the pressing rod is hinged to the extension sleeve. A locking block is provided at the front end of the pressing rod, extending inward and capable of engaging in the annular groove. A spring is provided on the inner side of the rear end of the pressing rod.

[0009] Furthermore, the outer wall of the extension sleeve is provided with a mounting groove in its axial direction, and the pressing rod is disposed in the mounting groove.

[0010] Furthermore, the front end of the mounting groove is provided with a window that communicates with the inner hole of the extension sleeve.

[0011] Furthermore, a positioning pin is provided on the side wall of the mounting groove, and the pressing rod is rotatably mounted on the positioning pin.

[0012] Furthermore, a mounting hole is provided at the bottom of the rear end of the mounting groove, and a mounting post is provided on the inner wall of the pressing rod opposite to the mounting hole. The inner end of the spring is located in the mounting hole, and the outer end is sleeved on the mounting post.

[0013] Furthermore, the rear end of the mounting groove is provided with a pressing groove located on the outer wall of the extension sleeve.

[0014] Furthermore, there are two pressing rods, which are located on opposite sides of the side wall of the extension sleeve.

[0015] Furthermore, the inner wall of the pressing rod is provided with a support protrusion located on the rear side of the locking block.

[0016] Furthermore, the inner bore of the extension sleeve includes a large-diameter section at the front end and a small-diameter section at the rear end, and the U-shaped sleeve body is assembled in the large-diameter section;

[0017] The outer wall of the rear end of the U-tube body is provided with a limiting strip located in its axial direction, and the inner wall of the large-diameter section is provided with a limiting groove that cooperates with the limiting strip.

[0018] Furthermore, the rear end of the extension sleeve is provided with a handle extending to one side.

[0019] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0020] This invention combines orthopedic robotic surgery with orthopedic endoscopic surgery by setting a quick-detachable extension component at the rear end of the U-tube body. This increases the range of surgical procedures available for robotic surgery, reduces the difficulty of surgery, and improves the accuracy and efficiency of orthopedic endoscopic surgery. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a structural diagram of an extended U-shaped cannula suitable for orthopedic surgical robots according to a preferred embodiment of the present invention;

[0023] Figure 2An axial cross-sectional view of the extended U-sleeve (end where the extension component is located) of the preferred embodiment of this utility model for use in orthopedic surgical robots;

[0024] Figure 3 An exploded view of the extension assembly of the extended U-shaped cannula for orthopedic surgical robots according to a preferred embodiment of the present invention;

[0025] Figure 4 An axial cross-sectional view of the extension sleeve of the extended U-shaped cannula suitable for orthopedic surgical robots according to a preferred embodiment of the present invention;

[0026] Figure 5 A structural diagram of the U-sleeve body of the extended U-sleeve suitable for orthopedic surgical robots according to a preferred embodiment of the present invention;

[0027] In the diagram: U-tube body 1, annular groove 11, limiting strip 12, extension assembly 2, extension sleeve 21, pressing rod 22, locking block 23, spring 24, mounting groove 25, window 26, positioning pin 27, hinge hole 28, mounting through hole 29, mounting hole 210, mounting post 211, pressing groove 212, supporting protrusion 213, large diameter section 214, small diameter section 215, limiting groove 216, handle 217. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] like Figure 1-5As shown, an extended U-tube suitable for orthopedic surgical robots includes a U-tube body 1 and an extension assembly 2 detachably installed at the rear end of the U-tube body 1; an annular groove 11 is provided on the outer wall of the rear end of the U-tube body 1; the extension assembly 2 includes an extension sleeve 21 sleeved on the rear end of the U-tube body 1, a pressing rod 22 located in the axial direction is installed on the side wall of the extension sleeve 21, the middle part of the pressing rod 22 is hinged to the extension sleeve 21, the front end of the pressing rod 22 is provided with a locking block 23 extending inward and able to be locked into the annular groove 11, and a spring 24 is provided on the inner side of the rear end of the pressing rod 22.

[0031] Pressing the rear end of the pressing rod 22 compresses the spring 24, causing the front end of the pressing rod 22 to tilt outward, thereby disengaging the locking block 23 from the annular groove 11. At this point, the U-tube body 1 is removed from the extension assembly 2. After releasing the pressing rod 22, the pressing rod 22 will reset under the action of the spring 24.

[0032] To facilitate the installation of the pressing rod 22, the outer wall of the extension sleeve 21 is provided with a mounting groove 25 in its axial direction, and the pressing rod 22 is installed in the mounting groove 25.

[0033] In order to allow the locking block 23 to extend into the inner hole of the extension sleeve 21 and thus lock into the annular groove 11 to fix the U-shaped sleeve body 1, a window 26 communicating with the inner hole of the extension sleeve 21 is provided at the front end of the mounting groove 25.

[0034] In order to achieve the hinge connection of the pressing rod 22, a positioning pin 27 is provided on the side wall of the mounting groove 25, and the pressing rod 22 is rotatably assembled on the positioning pin 27.

[0035] The pressing rod 22 is provided with a hinge hole 28, and a mounting through hole 29 extending to the outer wall of the extension sleeve 21 is provided on one side wall of the mounting groove 25. The positioning pin 27 is inserted into the mounting groove 25 through the mounting through hole 29 and passes through the hinge hole 28, so as to realize the rotational engagement between the pressing rod 22 and the positioning pin 27, so that both ends of the pressing rod 22 can rotate around the positioning pin 27.

[0036] The locating pin 27 can be fixed to the extension sleeve 21 with glue.

[0037] Preferably, the pressing rod 22 at the location of the hinge hole 28 has a larger thickness, which can effectively improve the structural strength of the pressing rod 22.

[0038] In order to install and fix the spring 24 and cooperate with the pressing rod 22, a mounting hole 210 is provided at the bottom of the rear end of the mounting groove 25. A mounting post 211 opposite to the mounting hole 210 is provided on the inner wall of the pressing rod 22. The inner end of the spring 24 is set in the mounting hole 210 and the outer end is sleeved on the mounting post 211.

[0039] To facilitate pressing the rear end of the pressing rod 22, the rear end of the mounting groove 25 is provided with a pressing groove 212 located on the outer wall of the extension sleeve 21.

[0040] To ensure the secure fixing of the U-shaped sleeve body 1, two pressing rods 22 are provided, located on opposite sides of the side wall of the extension sleeve 21.

[0041] Arranging the two pressing levers 22 opposite each other makes operation more convenient.

[0042] To improve the stability of the U-tube body 1 when it is assembled to the extension assembly 2, a support protrusion 213 located behind the locking block 23 is provided on the inner wall of the pressing rod 22.

[0043] Among them, the support protrusion 213 is located at the window 26. When the U-tube body 1 is assembled onto the extension assembly 2, the support protrusion 213 abuts against the outer wall of the U-tube body 1.

[0044] In order to limit the axial position of the U-shaped sleeve body 1, the inner hole of the extension sleeve 21 includes a large diameter section 214 at the front end and a small diameter section 215 at the rear end, and the U-shaped sleeve body 1 is assembled in the large diameter section 214.

[0045] The outer diameter of the rear end of the U-shaped sleeve body 1 is larger than the inner diameter of the small diameter section 215, so the U-shaped sleeve body 1 can be limited by the inner end of the large diameter section 214.

[0046] In order to limit the radial direction of the U-shaped sleeve body 1, a limiting strip 12 located in the axial direction is provided on the outer wall of the rear end of the U-shaped sleeve body 1, and a limiting groove 216 that cooperates with the limiting strip 12 is provided on the inner wall of the large diameter section 214.

[0047] In this embodiment, two limiting strips 12 are provided and are arranged in a staggered manner with the pressing rod 22. When the U-tube body 1 is assembled into the extension assembly 2, the cooperation between the limiting strips 12 and the limiting groove 216 can prevent relative rotation between the U-tube body 1 and the extension sleeve 21.

[0048] To facilitate rotation of the entire U-tube to adjust the field of view of the surgical channel, the rear end of the extension sleeve 21 is provided with a handle 217 extending to one side.

[0049] This invention extends the length of the entire U-tube without altering its inner and outer diameters and length, by adding a detachable extension component 2 at its rear end, thus ensuring its suitability for orthopedic robotic surgery.

[0050] Specifically, by pressing the rear end of the pressing rod 22, its front end can be lifted, releasing the U-sleeve body 1 and realizing the quick disassembly of the U-sleeve body 1 and the extension component 2; when the U-sleeve body 1 is inserted into the extension sleeve 21, the pressing rod 22 will use the elastic extension and contraction of the spring 24 to make its locking block 23 lock into the annular groove 11 of the U-sleeve body 1, realizing the quick assembly of the U-sleeve body 1 and the extension component 2.

[0051] This invention combines orthopedic robotic surgery with orthopedic endoscopic surgery, which not only increases the range of surgical procedures for robotic surgery but also reduces the difficulty of orthopedic endoscopic surgery and improves the precision of orthopedic endoscopic surgery. At the same time, by extending the quick assembly and disassembly of component 2, it can also effectively improve the efficiency of surgery.

[0052] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An extended U-shaped cannula suitable for orthopedic surgical robots, characterized in that, It includes a U-tube body (1) and an extension assembly (2) that is detachably installed at the rear end of the U-tube body (1); An annular groove (11) is provided on the outer wall of the rear end of the U-tube body (1); The extension assembly (2) includes an extension sleeve (21) fitted onto the rear end of the U-tube body (1). A pressing rod (22) is installed on the side wall of the extension sleeve (21) in its axial direction. The middle part of the pressing rod (22) is hinged to the extension sleeve (21). The front end of the pressing rod (22) is provided with a locking block (23) that extends inward and can be engaged in the annular groove (11). A spring (24) is provided on the inner side of the rear end of the pressing rod (22).

2. The extended U-shaped cannula for orthopedic surgical robots according to claim 1, characterized in that, The outer wall of the extension sleeve (21) is provided with a mounting groove (25) in its axial direction, and the pressing rod (22) is disposed in the mounting groove (25).

3. The extended U-shaped cannula for orthopedic surgical robots according to claim 2, characterized in that, The front end of the mounting groove (25) is provided with a window (26) that communicates with the inner hole of the extension sleeve (21).

4. The extended U-shaped cannula for orthopedic surgical robots according to claim 2, characterized in that, A positioning pin (27) is provided on the side wall of the mounting groove (25), and the pressing rod (22) is rotatably mounted on the positioning pin (27).

5. The extended U-shaped cannula for orthopedic surgical robots according to claim 2, characterized in that, The mounting groove (25) has a mounting hole (210) at the bottom of the rear end. The inner wall of the pressing rod (22) has a mounting post (211) opposite to the mounting hole (210). The inner end of the spring (24) is located in the mounting hole (210), and the outer end is sleeved on the mounting post (211).

6. The extended U-sleeve for orthopedic surgical robots according to claim 2, characterized in that, The rear end of the mounting groove (25) is provided with a pressing groove (212) located on the outer wall of the extension sleeve (21).

7. The extended U-shaped cannula for orthopedic surgical robots according to claim 1, characterized in that, Two pressing rods (22) are provided and are located on opposite sides of the side wall of the extension sleeve (21).

8. The extended U-shaped cannula for orthopedic surgical robots according to claim 1, characterized in that, The inner wall of the pressing rod (22) is provided with a support protrusion (213) located on the rear side of the locking block (23).

9. The extended U-shaped cannula for orthopedic surgical robots according to claim 1, characterized in that, The inner hole of the extension sleeve (21) includes a large diameter section (214) at the front end and a small diameter section (215) at the rear end, and the U-shaped sleeve body (1) is assembled in the large diameter section (214); The outer wall of the rear end of the U-tube body (1) is provided with a limiting strip (12) located in its axial direction, and the inner wall of the large diameter section (214) is provided with a limiting groove (216) that cooperates with the limiting strip (12).

10. The extended U-shaped cannula for orthopedic surgical robots according to claim 1, characterized in that, The rear end of the extension sleeve (21) is provided with a handle (217) that extends to one side.

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