Mounting bracket and surgical navigation system

Abstract

The application provides a mounting support and a surgical navigation system. The surgical navigation system comprises a tracer, a connecting rod and a mounting support. The connecting rod is connected between the mounting support and the tracer. The mounting support comprises a first clamping arm, a second clamping arm, an adjusting device and a bone nail. The first clamping arm is rotationally connected with the second clamping arm. The adjusting device is connected with the first clamping arm and the second clamping arm respectively to adjust the opening angle of the first clamping arm and the second clamping arm. The bone nail is detachably mounted on the first clamping arm or the second clamping arm. The first clamping arm or the second clamping arm is used to be connected with the tracer. The mounting support in the application can fix the tracer in the mode of clamping the spine processus spinosus and the mode of connecting with the bone nail. The mounting support does not need to be replaced according to different surgical types, the portability and flexibility of use are improved, and the manufacturing cost of the mounting support is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and more particularly relates to a mounting bracket and a surgical navigation system. BACKGROUND

[0002] The surgical navigation system is a surgical auxiliary system for guiding surgery by generating a preoperative patient bone image and registering a patient position during surgery, which can help doctors to more accurately position the operation position. When a surgical navigation system is used for orthopedic surgery, in order to prevent the accuracy of surgical positioning from being affected by changes in the position or posture of the patient, the position of the patient is usually tracked in real time by a tracer.

[0003] At present, the tracer is generally fixed by clamping or bone screw connection. The clamping refers to being fixed by being clamped on the exposed spine spinous process by a metal clamp. The bone screw connection refers to being fixed by pressing a bone screw into the tracking position. Due to differences in surgical types and doctor's use habits, different mounting brackets corresponding to the tracers are often designed, which has high manufacturing cost and low use flexibility. SUMMARY

[0004] The purpose of the embodiment of the application is to provide a mounting bracket and a surgical navigation system to solve the technical problem of high cost and low use flexibility caused by the need to design different mounting brackets corresponding to the tracers in the prior art.

[0005] To achieve the above purpose, the technical solution adopted by the application is to provide a mounting bracket for mounting a tracer, the mounting bracket comprising a first clamping arm, a second clamping arm, an adjusting device and a bone screw; the first clamping arm is rotationally connected with the second clamping arm, the adjusting device is connected with the first clamping arm and the second clamping arm respectively to adjust the opening angle of the first clamping arm and the second clamping arm; the bone screw is detachably mounted on the first clamping arm or the second clamping arm; the first clamping arm or the second clamping arm is used to connect with the tracer.

[0006] In a possible design, the first clamping arm and the second clamping arm are rotationally connected through a first rotation shaft, and the bone screw is arranged in parallel with the first rotation shaft.

[0007] In a possible design, the first clamping arm or the second clamping arm is formed with a mounting hole for mounting the bone screw, and the first clamping arm and / or the second clamping arm is provided with a locking structure for locking the bone screw.

[0008] In a possible design, one of the first clamping arm and the second clamping arm is provided with a mounting hole for mounting the bone nail, and the other of the first clamping arm and the second clamping arm is provided with an abutting member, which abuts against the bone nail when the first clamping arm and the second clamping arm are close to each other.

[0009] In a possible design, the abutting member is rotatably arranged on the first clamping arm or the second clamping arm, and the abutting member can abut against at least two bone nails arranged on the same straight line.

[0010] In a possible design, the adjusting device comprises a screw rod and a nut, the screw rod is arranged through the first clamping arm and the second clamping arm respectively, one end of the screw rod is positioned on the first clamping arm, the other end of the screw rod extends to a side of the second clamping arm away from the first clamping arm, the nut is threadedly arranged on the other end of the screw rod, and the nut abuts against the second clamping arm; rotating the nut can drive the second clamping arm to rotate to be close to or away from the first clamping arm.

[0011] In a possible design, the adjusting device further comprises a first rotating column and a second rotating column, the first clamping arm is provided with a first insertion hole, the second clamping wall is provided with a second insertion hole, the first rotating column is rotatably arranged in the first insertion hole, the second rotating column is rotatably arranged in the second insertion hole, the screw rod is arranged through the first rotating column and the second rotating column in sequence, one end of the screw rod is fixed on the first rotating column, and the second rotating column is in sliding fit with the screw rod.

[0012] In a possible design, the first clamping arm is provided with at least two first protrusions, the second clamping arm is provided with at least two second protrusions, and each of the first protrusions and each of the second protrusions are arranged staggeredly.

[0013] The mounting bracket provided in the application has the following beneficial effects: the mounting bracket provided in the application can fix the tracer in the mode of clamping the spinal process by the first clamping arm and the second clamping arm and in the mode of connecting the tracer by the bone nail, the doctor can select the fixing mode of the tracer according to the use habit, different operation types can select different mounting modes to mount the tracer by the same mounting bracket, the mounting bracket does not need to be replaced according to different operation types, the portability and flexibility are improved, the manufacturing cost of the mounting bracket is reduced, only one mounting bracket can meet different mounting requirements, and the clamping firmness of the first clamping arm and the second clamping arm is ensured by the adjusting device.

[0014] In another aspect, the application also provides a surgical navigation system, comprising a tracer, a connecting rod and the mounting bracket, the connecting rod being connected between the mounting bracket and the tracer; the tracer is installed on the connecting rod in an angle-adjustable manner, and / or the connecting rod is installed on the mounting bracket in an angle-adjustable manner.

[0015] In a possible design, one end of the connecting rod has a first connecting part, the first clamping arm or the second clamping arm is provided with a second connecting part, one side of the first connecting part is circumferentially distributed with first engaging teeth, one side of the second connecting part is circumferentially distributed with second engaging teeth, and the first engaging teeth and the second engaging teeth can engage with each other; the surgical navigation system further comprises a locking member, the locking member passes through the first connecting part and the second connecting part and is locked.

[0016] The surgical navigation system provided by the application has the beneficial effects that: the surgical navigation system provided by the embodiment of the application can fix the tracer in a manner of clamping the spinal process and connecting with the bone nail through the mounting bracket, does not need to replace the mounting bracket according to different surgical types, improves the portability and flexibility of use, and reduces the manufacturing cost of the mounting bracket. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0018] Figure 1 a three-dimensional schematic view of the surgical navigation system provided by the embodiment of the application;

[0019] Figure 2 a structural schematic view of the mounting bracket in the embodiment of the application; Figure 1

[0020] a structural schematic view of the mounting bracket in the embodiment of the application; Figure 3 Figure 2 a structural schematic view of the mounting bracket in the embodiment of the application;

[0021] Figure 4 a sectional view of the surgical navigation system in the embodiment of the application; Figure 1

[0022] a sectional view of the mounting bracket along the radial surface of the screw in the embodiment of the application; Figure 5 Figure 2 a sectional view of the mounting bracket along the radial surface of the screw in the embodiment of the application;

[0023] Figure 6 a sectional view of the mounting bracket along the radial surface of the screw in the embodiment of the application; Figure 2 ​​Structure diagram of the first clamping arm;

[0024] Figure 7 For Figure 2 Structure diagram of the second clamping arm.

[0025] In the drawings, various reference signs refer to the following items:

[0026] 1, mounting bracket; 11, first clamping arm; 111, first movable slot; 112, first protruding tooth; 113, first mounting slot; 114, adapter; 115, first insertion hole; 12, second clamping arm; 121, mounting hole; 1211, circular portion; 1212, conical portion; 122, second movable slot; 123, second protruding tooth; 124, second connecting portion; 1241, second occlusal tooth; 125, second mounting slot; 126, second insertion hole; 13, first rotating shaft; 14, adjusting device; 141, screw; 142, nut; 1421, rotating portion; 1422, handle; 143, first rotating column; 144, second rotating column; 1441, limiting surface; 145, fixing pin; 15, bone nail; 16, abutting member; 161, abutting surface; 17, second rotating shaft; 2, connecting rod; 21, first connecting portion; 211, first occlusal tooth; 3, tracer; 4, locking member. DETAILED DESCRIPTION

[0027] In order to make the technical problems to be solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise explicitly and specifically limited.

[0031] Please refer to Figure 1 The mounting bracket 1 provided by the embodiments of the present application will be described. The mounting bracket 1 is used for mounting the tracer 3, specifically, fixing the tracer 3 on the part to be tracked, so as to track the position of the patient in real time through the tracer 3.

[0032] The mounting bracket 1 comprises a first clamping arm 11, a second clamping arm 12, an adjusting device 14 and a bone nail 15; the first clamping arm 11 is rotationally connected with the second clamping arm 12; the adjusting device 14 is connected with the first clamping arm 11 and the second clamping arm 12 respectively to adjust the opening angle of the first clamping arm 11 and the second clamping arm 12; the bone nail 15 is detachably mounted on the first clamping arm 11 or the second clamping arm 12; the first clamping arm 11 or the second clamping arm 12 is used for being connected with the tracer 3.

[0033] The first clamping arm 11 is rotationally connected with the second clamping arm 12, which can be that one end of the first clamping arm 11 is rotationally connected with one end of the second clamping arm 12, and then the other end of the first clamping arm 11 and the other end of the second clamping arm 12 are close to each other to be clamped on the exposed spinal process for fixation, and finally the first clamping arm 11 and the second clamping arm 12 are kept at the clamping angle by the adjusting device 14 to keep the clamping stability; when it is needed to be disassembled, the opening angle between the first clamping arm 11 and the second clamping arm 12 is increased by the adjusting device 14, so that the first clamping arm 11 and the second clamping arm 12 release the spinal process. It can be understood that in other embodiments of the present application, the first clamping arm 11 can also be rotationally connected with the second clamping arm 12 at the positions close to the middle parts of the first clamping arm 11 and the second clamping arm 12, and then one end of the first clamping arm 11 and one end of the second clamping arm 12 are close to each other to be clamped on the exposed spinal process for fixation, which is not limited herein.

[0034] It should be noted that the bone nail 15 is detachably mounted on the first clamping arm 11 or the second clamping arm 12, and when the first clamping arm 11 and the second clamping arm 12 are used to fix the tracer 3, the bone nail 15 is generally disassembled from the first clamping arm 11 or the second clamping arm 12 in order to avoid affecting the clamping effect.

[0035] When the tracker 3 needs to be installed by the way of connecting the bone nail 15 due to the need of the type of surgery or the habit of the doctor, the bone nail 15 is installed on the first clamping arm 11 or the second clamping arm 12, and then the bone nail 15 is used to press and fix into the tracking position.

[0036] The number of the bone nail 15 is generally two or more, because the bone nail 15 is inserted into the tracking position by the way of threaded connection, if fixed by one bone nail 15, it is easy to cause the bone nail 15 to rotate and lead to unstable installation of the tracker 3, and two or more bone nails 15 can avoid the problem of the bone nail 15 rotating. Preferably, the number of the bone nail 15 is generally two, which can reduce the trauma to the human body under the condition of ensuring stable installation.

[0037] In summary, by setting the detachable bone nail 15 on the first clamping arm 11 or the second clamping arm 12, the installation support 1 can not only fix the tracker 3 by the way of clamping the spinal processus spinosus by the first clamping arm 11 and the second clamping arm 12, but also fix the tracker 3 by the way of connecting the bone nail 15, the doctor can choose the fixing way of the tracker 3 according to his own use habit, and different types of surgery can choose different installation ways to install the tracker 3 by the same installation support 1, without the need to replace the installation support 1 according to different types of surgery, which improves the portability and flexibility of use, reduces the manufacturing cost of the installation support 1, and only one installation support 1 can meet different installation needs.

[0038] In one embodiment, please refer to Figures 2 to 4 The first clamping arm 11 and the second clamping arm 12 are rotationally connected by the first rotation shaft 13, and the bone nail 15 is arranged in parallel with the first rotation shaft 13, that is, the opening and closing clamping action of the first clamping arm 11 and the second clamping arm 12 does not interfere with the length extension direction of the bone nail 15, so that the setting of the bone nail 15 does not affect the opening and closing of the first clamping arm 11 and the second clamping arm 12, and the existence of the first clamping arm 11 and the second clamping arm 12 also does not affect the installation of the bone nail 15, and the first clamping arm 11 or the second clamping arm 12 plays the role of the mounting seat of the bone nail 15. It can be understood that in other embodiments of the present application, as long as the installation position and installation way of the bone nail 15 are reasonable, the bone nail 15 can also be perpendicular or at an acute angle with the first rotation shaft 13, which is not limited here.

[0039] In one embodiment, please refer to Figure 2 and Figure 3A mounting hole 121 for mounting the bone screw 15 is formed on the first clamping arm 11 or the second clamping arm 12. A locking structure is provided on the first clamping arm 11 and / or the second clamping arm 12 for locking the bone screw 15. During installation, one end of the bone screw 15 can be inserted into the mounting hole 121, and then the locking structure can be used to lock the end of the bone screw 15, thereby achieving the installation of the bone screw 15.

[0040] In a specific embodiment, see Figure 2 and Figure 4 One of the first clamping arm 11 and the second clamping arm 12 is provided with a mounting hole 121 for mounting a bone screw 15. The other of the first clamping arm 11 and the second clamping arm 12 is provided with a retaining member 16. The retaining member 16 abuts against the bone screw 15 when the first clamping arm 11 and the second clamping arm 12 are brought into close proximity. During installation, one end of the bone screw 15 is first inserted into the mounting hole 121. The adjustment device 14 is then used to adjust the opening and closing angle between the first clamping arm 11 and the second clamping arm 12 until the retaining member 16 abuts against the bone screw 15, thereby locking and securing the bone screw 15. In other words, in this embodiment, not only can the adjustment device 14 be used to adjust the opening and closing angle between the first clamping arm 11 and the second clamping arm 12, but the adjustment device 14 can also be used to control the abutment strength of the retaining member 16 against the bone screw 15, thereby ensuring that the bone screw 15 is securely locked. Furthermore, the locking of the bone screw 15 and the clamping and locking of the two clamping arms are achieved through the use of the same adjustment device 14, resulting in a simple structure, reduced design costs for the locking structure of the bone screw 15, and a simplified overall structure. It is understood that in other embodiments of the present application, the bone screw 15 can also be locked directly using a locking bolt. For example, when the bone screw 15 is mounted on the second clamping arm 12, the locking bolt can be directly installed on the second clamping arm 12. By rotating the locking bolt until the end of the locking bolt abuts the surface of the bone screw 15, the bone screw 15 is locked.

[0041] Optionally, in the embodiment, the first clamping arm 11 is fixedly arranged, and the second clamping arm 12 is rotatable to approach or move away from the first clamping arm 11 under the driving of the adjusting device 14; the mounting hole 121 is formed on the second clamping arm 12, and the abutting member 16 is arranged on the first clamping arm 11. When the tracer 3 is fixed by using the clamping mode, the first clamping arm 11 and the second clamping arm 12 are first clamped on the spinal processus, and then the second clamping arm 12 is driven by the adjusting device 14 to rotate towards the first clamping arm 11 to approach and lock, so that the first clamping arm 11 and the second clamping arm 12 are firmly clamped on the spinal processus; when the tracer 3 is fixed by using the bone screw 15 connection mode, one end of the bone screw 15 is first arranged through the mounting hole 121, and then the second clamping arm 12 is driven by the adjusting device 14 to rotate towards the first clamping arm 11 to approach, so that the abutting member 16 on the first clamping arm 11 abuts against the bone screw 15, and the locking and fixing of the bone screw 15 are realized. It can be understood that, in other embodiments of the present application, the second clamping arm 12 can also be fixedly arranged, the first clamping arm 11 can be movably arranged, or the first clamping arm 11 and the second clamping arm 12 can both be movably arranged; in addition, the mounting hole 121 can be formed on the fixed first clamping arm 11, and the abutting member 16 can be arranged on the movably arranged second clamping arm 12, which is not limited herein.

[0042] In one embodiment, the abutting member 16 is rotatably arranged on the first clamping arm 11 or the second clamping arm 12, and the abutting member 16 can abut against at least two bone screws 15 located on the same straight line. For example, the abutting member 16 is rotatably arranged on the first clamping arm 11, and two bone screws 15 are arranged on the second clamping arm 12; when the second clamping arm 12 approaches the first clamping arm 11, the bone screws 15 also approach the abutting member 16, and the abutting member 16 can be driven to rotate by one of the bone screws 15 to abut against both of the bone screws 15, so that the locking and positioning of two or more bone screws 15 can be realized by one abutting member 16, and the number of abutting members 16 can be saved. In addition, due to the rotatable design of the abutting member 16, even if the size or installation position of the bone screw 15 deviates due to machining errors or assembly errors, the abutting member 16 can be rotated to adapt to the bone screw 15 and achieve locking and fixing.

[0043] Referring to Figure 4 , the abutting member 16 has an abutting surface 161, the abutting surface 161 is a plane, and the abutting surface 161 is used to abut against two or more bone screws 15 located on the same straight line to fix the bone screws 15.

[0044] Referring to Figure 2The radial section of the mounting hole 121 comprises a circular portion 1211 and a conical portion 1212, the circular portion 1211 is circular, the conical portion 1212 is communicated with the outer periphery of the circular portion 1211, and the width of the conical portion 1212 gradually decreases to zero from the circular portion 1211 to the direction away from the circular portion 1211. During installation, the bone nail 15 is arranged in the circular portion 1211, and when the abutting member 16 abuts against the bone nail 15, at least part of the bone nail 15 is arranged in the conical portion 1212, so that the abutting contact area of the bone nail 15 and the second clamping arm 12 can be increased. At the same time, due to the arrangement of the conical portion 1212, when there is a fitting error between the circular portion 1211 and the bone nail 15, the conical portion 1212 can compensate for the fitting error, so that the bone nail 15 can be firmly installed.

[0045] In one embodiment, referring to Figure 2 、 Figure 3 and Figure 5 , the adjusting device 14 comprises a screw rod 141 and a nut 142, the screw rod 141 is arranged through the first clamping arm 11 and the second clamping arm 12 respectively, one end of the screw rod 141 is positioned on the first clamping arm 11, the other end of the screw rod 141 extends to the side of the second clamping arm 12 away from the first clamping arm 11, the nut 142 is threadedly sleeved on the other end of the screw rod 141, and the nut 142 abuts against the second clamping arm 12. Rotating the nut 142 can drive the second clamping arm 12 to rotate to approach or move away from the first clamping arm 11.

[0046] The nut 142 is threadedly connected with the screw rod 141, one end of the screw rod 141 is positioned on the first clamping arm 11, and when the nut 142 rotates clockwise on the screw rod 141, the nut 142 will move along the screw rod 141 to the first clamping arm 11, and the movement of the nut 142 on the screw rod 141 will push the second clamping arm 12 to rotate and approach the first clamping arm 11, so as to realize that the first clamping arm 11 and the second clamping arm 12 jointly clamp the spinal processus spinosus. When the nut 142 rotates counterclockwise on the screw rod 141, the nut 142 will move along the screw rod 141 to the direction away from the first clamping arm 11, the abutting pressure acting on the second clamping arm 12 disappears, and the second clamping arm 12 will rotate to the direction away from the first clamping arm 11 to release the spinal processus spinosus along with the nut 142.

[0047] In the embodiment, referring to Figure 2, one end of the first clamping arm 11 and one end of the second clamping arm 12 are rotationally connected through the first rotating shaft 13, the screw rod 141 penetrates the first clamping arm 11 and the second clamping arm 12 respectively at positions close to the middle part of the first clamping arm 11 and the second clamping arm 12, when the nut 142 is rotated clockwise, the nut 142 pushes the position of the second clamping arm 12 close to the middle part to make the second clamping arm 12 rotate around one end thereof and move close to the first clamping arm 11, so that the other end of the first clamping arm 11 and the other end of the second clamping arm 12 can move close to each other to clamp the spinous process of the spine. It can be understood that in other embodiments of the present application, the first rotating shaft 13 can also be arranged at positions close to the middle part of the first clamping arm 11 and the second clamping arm 12, and the screw rod 141 can penetrate one end of the first clamping arm 11 and one end of the second clamping arm 12, which can also achieve the clamping effect of the first clamping arm 11 and the second clamping arm 12.

[0048] Please refer to Figure 5 , the nut 142 is T-shaped, the nut 142 includes a rotating part 1421 threaded on the screw rod 141 and a handle 1422 connected with the rotating part 1421, the handle 1422 is connected perpendicularly with the rotating part 1421 and is used for rotation operation by the doctor.

[0049] In one embodiment, please refer to Figure 2 、 Figure 3 and Figure 5 , the adjusting device 14 further includes a first rotating column 143 and a second rotating column 144, the first clamping arm 11 is provided with a first insertion hole 115, the second clamping arm 12 is provided with a second insertion hole 126, the first rotating column 143 is rotationally arranged in the first insertion hole 115, the second rotating column 144 is rotationally arranged in the second insertion hole 126, the screw rod 141 penetrates the first rotating column 143 and the second rotating column 144 perpendicularly in sequence, one end of the screw rod 141 is fixed on the first rotating column 143, and the second rotating column 144 is in sliding fit with the screw rod 141.

[0050] Among them, please refer to Figure 2The first rotating column 143 is parallel to the second rotating column 144 and parallel to the first rotating shaft 13. Since the positions of the first insertion hole 115 and the second insertion hole 126 are fixed, the position of the first rotating column 143 on the first clamping arm 11 is fixed, and the position of the second rotating column 144 on the second clamping arm 12 is also fixed. When the nut 142 rotates to push the second clamping arm 12, the second clamping arm 12 rotates, and the angle between the screw rod 141 and the second clamping arm 12 changes, so that the screw rod 141 will swing in the second clamping arm 12, resulting in unstable installation of the screw rod 141 and the second clamping arm 12. The second rotating column 144 is arranged to connect the second clamping arm 12 and the screw rod 141, and the position of the second rotating column 144 is fixed, thereby limiting the position of the connection between the second clamping arm 12 and the screw rod 141, and the rotation of the second rotating column 144 relative to the second clamping arm 12 can also adapt to the change of the angle between the screw rod 141 and the second clamping arm 12, further ensuring the connection reliability of the second clamping arm 12 and the screw rod 141.

[0051] Similarly, the first rotating column 143 has the same effect as the second rotating column 144, and the first rotating column 143 ensures the connection reliability between the screw rod 141 and the first clamping arm 11. The difference is that the first rotating column 143 is fixedly connected with the screw rod 141, and the second rotating column 144 is slidably connected with the screw rod 141.

[0052] Please refer to Figure 2 , Figure 3 and Figure 5 , the adjusting device 14 further comprises a fixed pin 145 arranged in the center hole of the first rotating column 143 and in plug-in cooperation with one end of the screw rod 141, thereby limiting the relative displacement between the screw rod 141 and the first rotating column 143.

[0053] Please refer to Figures 5 to 7 , since the screw rod 141 needs to swing slightly on the first clamping arm 11 and the second clamping arm 12, in order to avoid structural interference, the first movable slot 111 is formed on the first clamping arm 11, and the second movable slot 122 is formed on the second clamping arm 12 to allow the screw rod 141 to swing.

[0054] Please refer to Figures 5 to 7In order to realize the rotation of the abutting part 16 and the abutting to the bone nail 15, a first installation groove 113 is formed on the first clamping arm 11, the abutting part 16 is rotatably arranged on the first clamping arm 11 through the second rotating shaft 17, and the first installation groove 113 is used for installing the part of the abutting part 16 connected with the second rotating shaft 17; a second installation groove 125 is formed on the second clamping arm 12, and the second installation groove 125 is used for accommodating the part of the abutting part 16 used for abutting to the bone nail 15. In addition, the first clamping arm 11 has a rotating part 114 at one end, the rotating part 114 extends into the second installation groove 125 and is rotatably arranged on the first rotating shaft 13.

[0055] Please refer to Figure 4 A limiting surface 1441 is arranged on the second rotating column 144, the limiting surface 1441 is arranged in abutment with one end of the nut 142, so that the nut 142 and the second rotating column 144 are in planar abutment, and the abutment is more stable.

[0056] In one embodiment, please refer to Figure 2 At least two first protrusions 112 are arranged on the other end of the first clamping arm 11, and at least two second protrusions 123 are arranged on the other end of the second clamping arm 12, when the other end of the first clamping arm 11 and the other end of the second clamping arm 12 are clamped to each other, each first protrusion 112 and each second protrusion 123 are inserted into the spinal process to realize firm fixation.

[0057] Optionally, please refer to Figure 2 Each first protrusion 112 and each second protrusion 123 are arranged staggered, that is, each first protrusion 112 and each second protrusion 123 are inserted into different positions of the spinal process to form a staggered force, so that the clamping force to the spinal process is tighter, and the fixation is more secure.

[0058] On the other hand, please refer to Figure 1 The application also provides a surgical navigation system, comprising the tracer 3, the connecting rod 2 and the mounting bracket 1, the connecting rod 2 is connected between the mounting bracket 1 and the tracer 3; the tracer 3 is installed on the connecting rod 2 in an angle-adjustable manner, and / or the connecting rod 2 is installed on the mounting bracket 1 in an angle-adjustable manner.

[0059] The tracer 3 is installed on the connecting rod 2 in an angle-adjustable manner, and / or the connecting rod 2 is installed on the mounting bracket 1 in an angle-adjustable manner, so that the angle of the tracer 3 can be adjusted as needed to realize clearer and more accurate tracking.

[0060] In one embodiment, the connecting rod 2 is connected to the second clamping arm 12 in an angle-adjustable manner, and the angle of the tracer 3 is adjusted by adjusting the angle of the connecting rod 2 on the second clamping arm 12. It can be understood that in other embodiments of the present application, the installation angle of the tracer 3 on the connecting rod 2 can also be set to be adjustable.

[0061] In one embodiment, please refer to Figure 4 , one end of the connecting rod 2 has a first connecting part 21, the second clamping arm 12 is provided with a second connecting part 124, the first connecting part 21 is circumferentially distributed with a first tooth 211 on one side, the second connecting part 124 is circumferentially distributed with a second tooth 1241 on one side, and the first tooth 211 and the second tooth 1241 can be engaged with each other; the surgical navigation system further comprises a locking member 4, which passes through the first connecting part 21 and the second connecting part 124 respectively and is locked. When installing, first pass the locking member 4 through the first connecting part 21 and the second connecting part 124 in turn, then rotate the connecting rod 2 according to the angle at which the tracer 3 needs to be placed, and make each first tooth 211 correspondingly engage with each second tooth 1241, and finally lock the first connecting part 21 and the second connecting part 124 by the locking member 4, so as to realize the locking of the connecting rod 2 and the second clamping arm 12, and because of the mutual engagement of the first tooth 211 and the second tooth 1241, the connection between the connecting rod 2 and the second clamping arm 12 is more reliable and cannot be found to be rotated; in addition, the angle of the tracer 3 can also be adjusted according to needs.

[0062] Please refer to Figure 1 , the rotation axis of the locking member 4 is perpendicular to the connecting rod 2, and the rotation axis of the locking member 4 is perpendicular to the first rotating shaft 13. For example, the pitch angle of the tracer 3 in the front-back direction can be adjusted by the first connecting part 21 and the second connecting part 124. Figure 1

[0063] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.​

Claims

1. A mounting bracket for mounting a tracer, characterized in that: The mounting bracket includes a first clamping arm, a second clamping arm, an adjusting device and a bone screw; the first clamping arm is rotatably connected to the second clamping arm, and the adjusting device is respectively connected to the first clamping arm and the second clamping arm to adjust the opening and closing angle of the first clamping arm and the second clamping arm; the bone screw is detachably mounted on the first clamping arm or the second clamping arm, and the number of the bone screws is two or more; the first clamping arm or the second clamping arm is used to connect to the tracer.

2. The mounting bracket according to claim 1, wherein: The first clamping arm and the second clamping arm are rotatably connected via a first rotating shaft, and the bone screw is arranged parallel to the first rotating shaft.

3. The mounting bracket according to claim 1, wherein: A mounting hole for mounting a bone screw is formed on the first clamping arm or the second clamping arm, and a locking structure for locking the bone screw is provided on the first clamping arm and / or the second clamping arm.

4. The mounting bracket according to claim 1, wherein: One of the first clamping arm and the second clamping arm is provided with a mounting hole for installing the bone screw, and the other of the first clamping arm and the second clamping arm is provided with a tightening member, which presses the bone screw when the first clamping arm and the second clamping arm are close to each other.

5. The mounting bracket according to claim 4, wherein: The pressing member is rotatably disposed on the first clamping arm or the second clamping arm, and the pressing member can respectively press at least two bone screws located on the same straight line.

6. The mounting bracket according to any one of claims 1 to 5, wherein: The adjusting device includes a screw and a nut, the screw is respectively arranged to pass through the first clamping arm and the second clamping arm, one end of the screw is positioned on the first clamping arm, and the other end of the screw extends to the side of the second clamping arm away from the first clamping arm, the nut is threadedly sleeved on the other end of the screw, and the nut abuts against the second clamping arm. Rotating the nut can drive the second clamping arm to rotate closer to or away from the first clamping arm.

7. The mounting bracket according to claim 6, wherein: The adjusting device also includes a first rotating column and a second rotating column. The first clamping arm is provided with a first socket, and the second clamping wall is provided with a second socket. The first rotating column is rotatably arranged in the first socket, and the second rotating column is rotatably arranged in the second socket. The screw rod is vertically penetrated through the first rotating column and the second rotating column in sequence. One end of the screw rod is fixed on the first rotating column, and the second rotating column is slidably matched with the screw rod.

8. The mounting bracket according to any one of claims 1 to 5, wherein: The first clamping arm is provided with at least two first protruding teeth, and the second clamping arm is provided with at least two second protruding teeth, and the first protruding teeth and the second protruding teeth are staggered.

9. A surgical navigation system, characterized in that: It comprises a tracer, a connecting rod and a mounting bracket according to any one of claims 1 to 8, wherein the connecting rod is connected between the mounting bracket and the tracer; the tracer is mounted on the connecting rod in an angle-adjustable manner, and / or the connecting rod is mounted on the mounting bracket in an angle-adjustable manner.

10. The surgical navigation system according to claim 9, wherein: One end of the connecting rod has a first connecting part, and the first clamping arm or the second clamping arm is provided with a second connecting part. One side of the first connecting part has first engaging teeth distributed along the circumference, and one side of the second connecting part has second engaging teeth distributed along the circumference. The first engaging teeth and the second engaging teeth can engage with each other; the surgical navigation system also includes a locking piece, which passes through the first connecting part and the second connecting part respectively and locks them.

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