Positioning and guiding device for bone joint operation

Abstract

The utility model relates to the technical field of bone joint operations, in particular to a positioning and guiding device for bone joint operations. Comprising a stop lever, a sliding rod perpendicular to the stop lever is slidably inserted into the stop lever, a hook claw is machined at the end, away from the stop lever, of the sliding rod, a clamping rod is elastically slidably connected to the stop lever on one side of the sliding rod, the clamping rod is parallel to the sliding rod, an oblong hole is formed in the stop lever between the clamping rod and the sliding rod, and the length direction of the oblong hole is parallel to the length direction of the stop lever. An annular groove corresponding to the oblong hole is formed in the side, facing the hook claw, of the stop lever, the annular groove is in an oblong shape, two baffle rings are installed in the annular groove, a guide pipe is concentrically fixed to the baffle rings and penetrates through the oblong hole, a thread sleeve is connected to the outer side of the guide pipe in a threaded mode, and the thread sleeve tightly abuts against the stop lever. According to the device, the clamping rods are arranged, the clamping rods and the sliding rods can clamp the calcaneal tuberosity, and the stop rods can be effectively stabilized.

Description

Technical Field

[0001] This utility model relates to the field of bone and joint surgery technology, specifically to a bone and joint surgery positioning and guiding device. Background Technology

[0002] Fractures of irregular bones, such as the calcaneus, are usually fixed by inserting screws. However, screw insertion nowadays generally relies on the doctor's experience. After insertion, the screw may shift in position and not be directed to the fracture site. Therefore, repeated insertion is required, which can easily cause damage to nerves, blood vessels, and the calcaneus.

[0003] To address the aforementioned technical problems, patent document CN212939921U discloses a calcaneal fracture access screw surgical locator, comprising a calcaneal positioning plate positioned close to the surface of the calcaneal tuberosity, a scaphoid positioning plate with one end close to the scaphoid tuberosity, and at least two guide sleeves. One end of the calcaneal positioning plate is connected to one end of the scaphoid positioning plate, forming an angle between them. The guide sleeves penetrate the calcaneal positioning plate, and all guide sleeves are located on the same plane, which is parallel to the upper surface of the scaphoid positioning plate. The calcaneal positioning plate is close to the calcaneal tuberosity, and the scaphoid positioning plate is close to the surface of the scaphoid tuberosity. The screw is inserted into the fracture location after passing through the guide sleeves. Since the guide sleeves are parallel to the scaphoid positioning plate, the inserted screw is also parallel to the scaphoid positioning plate and can be inserted to the predetermined location without repeated insertion. However, the calcaneal and scaphoid positioning plates have poor stability and are prone to movement during screw insertion. Utility Model Content

[0004] The main purpose of this invention is to provide a stable and accurate positioning guide device for bone and joint surgery.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A surgical positioning and guiding device for bone and joint surgery includes a stop bar, a slide bar perpendicular to the stop bar is slidably inserted onto the stop bar, a hook is machined at the end of the slide bar away from the stop bar, a clamping bar is elastically slidably connected to the stop bar on one side of the slide bar, the clamping bar is parallel to the slide bar, an elongated hole is formed on the stop bar between the clamping bar and the slide bar, the length direction of the elongated hole is parallel to the length direction of the stop bar, an annular groove corresponding to the elongated hole is formed on the side of the stop bar facing the hook bar, the annular groove is elongated, two retaining rings are installed in the annular groove, a guide tube is concentrically fixed on the retaining ring, the guide tube passes through the elongated hole, and a threaded sleeve is threadedly connected to the outside of the guide tube, the threaded sleeve tightly abuts against the stop bar.

[0007] Specifically, the stop bar has a groove, the length of the groove is parallel to the length of the stop bar, a slider is slidably engaged in the groove, a clamping rod is fixed on the slider, and the slider and the stop bar are connected by a spring.

[0008] Specifically, anti-slip textures are machined on the sidewalls of the annular groove and the retaining ring.

[0009] Specifically, the stop bar is threaded with a positioning screw for pressing against the slide bar.

[0010] Specifically, the stop bar is threaded with a tightening screw for positioning the clamping rod.

[0011] Specifically, the end of the retaining ring facing the hook is flush with the end of the retaining rod facing the hook.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This device, by setting up clamping rods, can clamp the calcaneal tuberosity and effectively stabilize the stop bar.

[0014] 2. The position of the guide tube is adjustable, allowing for adjustment of the screw insertion position as needed. It has a wide range of applications. During screw insertion, the guide tube can effectively guide the screw, ensuring accurate insertion into the fracture location without the need for repeated insertion.

[0015] 3. By setting anti-slip textures on the sidewalls opposite to the retaining ring in the annular groove, rotating the threaded sleeve to make it tightly press against the retaining rod increases the friction between the retaining ring and the retaining rod, thereby improving the stability of the guide tube.

[0016] 4. Since the end of the retaining ring facing the hook is flush with the end of the retaining rod facing the hook, the contact area between the retaining rod and the calcaneal tuberosity can be increased after the retaining rod is pressed tightly against the calcaneal tuberosity, thus improving the stability of the device during use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the device in use.

[0018] Figure 2 This is a schematic diagram of the structure of this device.

[0019] Figure 3 This is a schematic diagram of the slider and the groove working together.

[0020] Figure 4 This is a top view of the device.

[0021] Figure 5 for Figure 4 Sectional view along the AA direction.

[0022] The components in the attached diagram are named as follows: 1. Stop bar, 2. Slide bar, 3. Positioning screw, 4. Claw, 5. Oblong hole, 6. Guide tube, 7. Screw sleeve, 8. Clamping rod, 9. Tightening screw, 10. Ring groove, 11. Retaining ring, 12. Slider, 13. Slide groove, 14. Spring, 15. Calcaneal tuberosity, 16. Scaphoid tuberosity. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1: Refer to Figures 2-5 As shown, a positioning and guiding device for bone and joint surgery includes a stop bar 1, a slide bar 2 perpendicular to the stop bar 1, and a claw 4 machined at the end of the slide bar 2 away from the stop bar 1. A positioning screw 3 for pressing against the slide bar 2 is threaded onto the stop bar 1.

[0025] A clamping rod 8 is elastically slidably connected to the stop rod 1 on one side of the slide rod 2, and the clamping rod 8 is parallel to the slide rod 2. Specifically, a sliding groove 13 is provided on the stop rod 1, the length direction of the sliding groove 13 is parallel to the length direction of the stop rod 1, a slider 12 is slidably engaged in the sliding groove 13, the clamping rod 8 is fixed on the slider 12, and the slider 12 is connected to the stop rod 1 by a spring 14.

[0026] The stop bar 1 is threaded with a tightening screw 9 for positioning the clamping rod 8, with one end of the tightening screw 9 located in the slide groove 13. Rotating the tightening screw 9 causes it to press against the slider 12, thereby positioning the slider 12 and thus positioning the clamping rod 8.

[0027] An elongated hole 5 is provided on the stop bar 1 between the clamping rod 8 and the sliding rod 2. The length direction of the elongated hole 5 is parallel to the length direction of the stop bar 1. An annular groove 10 corresponding to the elongated hole 5 is provided on the side of the stop bar 1 facing the hook 4. The annular groove 10 is elongated. Two retaining rings 11 are installed in the annular groove 10. A guide tube 6 is concentrically fixed on the retaining ring 11. The guide tube 6 passes through the elongated hole 5. A threaded sleeve 7 is threaded to the outside of the guide tube 6. The threaded sleeve 7 tightly abuts against the stop bar 1.

[0028] like Figure 1 As shown, in use, the stop bar 1 is pressed tightly against the calcaneal tuberosity 15, and the calcaneal tuberosity 15 is positioned between the stop bar 1 and the clamping bar 8, so that the sliding bar 2 is pressed tightly against the surface of the scaphoid tuberosity 16. Under the elastic force of the spring 14, the clamping bar 8 and the sliding bar 2 clamp the calcaneal tuberosity 15, thereby enabling pre-stabilization of the device.

[0029] The slide bar 2 slides on the stop bar 1, causing the claw 4 to hook onto the scaphoid tuberosity 16. Then, the positioning screw 3 is rotated to stabilize the slide bar 2 on the stop bar 1. Subsequently, the tightening screw 9 is rotated to press against the slider 12, thereby positioning the clamping rod 8. At this point, the device is stabilized.

[0030] After passing through the guide tube 6, the screw is inserted into the patient's fracture site. Because the guide tube 6 can effectively guide the screw, it can be accurately inserted into the patient's fracture site.

[0031] The loosened screw sleeve 7, guide tube 6 and retaining ring 11 can move along the length of the elongated hole 5, thereby adjusting the position of the guide tube 6. This allows the guide tube 6 to correspond to the patient's fracture site, ensuring that the screw is effectively inserted into the patient's fracture site during the insertion of the screw through the guide tube 6.

[0032] Example 2: Based on Example 1, referring to... Figure 4 and Figure 5 As shown, anti-slip textures are machined on the sidewalls of the annular groove 10 and the retaining ring 11 opposite to each other. The end of the retaining ring 11 facing the hook 4 is flush with the end of the stop bar 1 facing the hook 4.

[0033] By setting anti-slip textures on the sidewalls opposite to the retaining ring 11 in the annular groove 10, and rotating the threaded sleeve 7 to make the threaded sleeve 7 press tightly against the retaining rod 1, the friction between the retaining ring 11 and the retaining rod 1 can be increased, thereby improving the stability of the guide tube 6.

[0034] Since the end of the retaining ring 11 facing the hook 4 is flush with the end of the retaining rod 1 facing the hook 4, the retaining rod 1 can increase the contact area between the retaining rod 1 and the calcaneal tuberosity 15 after it is pressed against the calcaneal tuberosity 15, thereby improving the stability of the device during use.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bone joint surgery positioning guide device comprising a stop bar (1), characterized in that, A sliding rod (2) perpendicular to the stop rod (1) is slidably inserted on it. A hook (4) is machined on the end of the sliding rod (2) away from the stop rod (1). A clamping rod (8) is elastically slidably connected to the stop rod (1) on one side of the sliding rod (2). The clamping rod (8) is parallel to the sliding rod (2). An elongated hole (5) is opened on the stop rod (1) between the clamping rod (8) and the sliding rod (2). The length direction of the elongated hole (5) is parallel to the length direction of the stop rod (1). An annular groove (10) corresponding to the elongated hole (5) is opened on the side of the stop rod (1) facing the hook (4). The annular groove (10) is elongated. Two retaining rings (11) are installed in the annular groove (10). A guide tube (6) is concentrically fixed on the retaining ring (11). The guide tube (6) passes through the elongated hole (5). A threaded sleeve (7) is threaded on the outside of the guide tube (6). The threaded sleeve (7) is tightly against the stop rod (1).

2. The bone joint surgery positioning guide of claim 1, wherein, The stop bar (1) is provided with a sliding groove (13), the length direction of the sliding groove (13) is parallel to the length direction of the stop bar (1), a slider (12) is slidably engaged in the sliding groove (13), the clamping rod (8) is fixed on the slider (12), and the slider (12) and the stop bar (1) are connected by a spring (14).

3. The bone joint surgery positioning guide of claim 1, wherein, The sidewalls of the annular groove (10) and the retaining ring (11) opposite each other are machined with anti-slip textures.

4. The bone joint surgery positioning guide of claim 1, wherein, The stop bar (1) is threaded with a positioning screw (3) for pressing against the slide bar (2).

5. The bone joint surgery positioning guide of claim 1, wherein, The stop bar (1) is threaded with a tightening screw (9) for positioning the clamping rod (8), and one end of the tightening screw (9) is located in the slide groove (13).

6. The bone joint surgery positioning guide of claim 1, wherein, The end of the retaining ring (11) facing the hook (4) is flush with the end of the retaining rod (1) facing the hook (4).

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