Angle measuring device for spine bending rod
By designing an angle measurement device for spinal bending rods, the problem of inaccurate bending of the connecting rod caused by relying on doctors' experience is solved, and a more accurate spinal fracture reduction effect is achieved.
Patent Information
- Application Number
- CN202422161843.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In spinal surgery, relying on the experience of the doctor, the calcane angle of the bend connecting rod is inaccurate, making it difficult to accurately and effectively reduce the kyphosis of the spinal fracture.
An angle measuring device for spinal bending rods is designed, including a first rotating assembly and a second rotating assembly. An angle measuring mechanism is provided between the two spinal screws, which can measure the angle between the two spinal screws to obtain the bending angle of the connecting rod and reduce the risk of insufficient or excessive bending.
It improves the accuracy of the bending angle of the connecting rod, improves the effect of spinal fracture reduction, and reduces the possibility of improper bending of the connecting rod.
Smart Images
Figure CN223158441U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of medical device technology, and specifically relates to an angle measuring device for a spinal bending rod. Background Art
[0002] During current spinal surgery, spinal screws are inserted into the spine, and then connecting rods are inserted into the heads of the spinal screws. The prying force of the connecting rods is used to achieve sagittal reduction. Traditional spinal surgery usually installs straight connecting rods, but for patients with larger kyphosis deformities, straight connecting rods have limited effect on spinal reduction.
[0003] To improve the effectiveness of rods in reducing kyphosis caused by fractures, many surgeons use rods with lordotic curvature. However, during surgery, the curvature of the rod often relies on the surgeon's experience, which can result in under- or over-curvature of the rod, leading to insufficient or overcorrection of the spine. Clearly, the lordotic angle of rods bent based on the surgeon's experience is inaccurate, making it difficult to accurately and effectively reduce kyphosis caused by spinal fractures. Utility Model Content
[0004] The purpose of this application is to provide an angle measuring device for a spinal bending rod, which can solve the problem that the lordosis angle of the connecting rod formed by bending based on the doctor's experience is inaccurate, making it difficult to accurately and effectively reduce the kyphosis deformity of spinal fractures.
[0005] In order to solve the above technical problems, this application is implemented as follows:
[0006] The present application provides an angle measuring device for a spinal bending rod, comprising a first rotating assembly and a second rotating assembly, wherein the first rotating assembly is rotatably connected to the second rotating assembly, the first rotating assembly is provided with a first docking portion, and the second rotating assembly is provided with a second docking portion, the first docking portion and the second docking portion are located on the same side, and both the first docking portion and the second docking portion are capable of docking with a spinal screw;
[0007] An angle measuring mechanism is provided between the first rotating assembly and the second rotating assembly. The angle measuring mechanism can measure the angle between the spinal screw docked by the first docking portion and the spinal screw docked by the second docking portion.
[0008] The beneficial technical effects of this application are as follows:
[0009] In this application, the first rotating assembly and the second rotating assembly are rotatably connected, and an angle measuring mechanism is provided therebetween. A first docking portion is provided on the first rotating assembly, and a second docking portion is provided on the second rotating assembly. The first docking portion and the second docking portion are respectively connected to a spinal screw. After connection, the angle measuring mechanism can measure the included angle between the spinal screw docked by the first docking portion and the spinal screw docked by the second docking portion. And according to the included angle between the above two spinal screws, the bending angle of the connecting rod can be obtained. Bending the connecting rod based on this bending angle can reduce the risk of insufficient or excessive bending of the connecting rod when bending the connecting rod, so as to improve the accuracy of the bending angle of the connecting rod and the reduction effect on spinal fractures. Description of the Drawings
[0010] Figure 1 It is a schematic structural diagram of an angle measuring device for a spinal bending rod disclosed in an embodiment of this application;
[0011] Figure 2 It is a schematic diagram of the cooperation between the angle measuring device for a spinal bending rod and a spinal screw when the first rotating member is in the first position, which is disclosed in an embodiment of this application;
[0012] Figure 3 It is a cross-sectional view of a partial structure of an angle measuring device for a spinal bending rod when the first rotating member is in the first position, which is disclosed in an embodiment of this application;
[0013] Figure 4 It is an assembly diagram of the first connecting rod and the second connecting rod, which is disclosed in an embodiment of this application;
[0014] Figure 5 It is a schematic structural diagram of an angle measuring device for a spinal bending rod disclosed in another embodiment of this application;
[0015] Figure 6 It is a schematic structural diagram of an angle measuring device for a spinal bending rod disclosed in still another embodiment of this application.
[0016] Description of the Reference Numerals:
[0017] 100, the first rotating assembly; 101, the clamping ball; 102, the elastic member; 110, the first rotating member; 111, the clamping portion; 120, the first docking member; 121, the first docking portion; 122, the first sleeve; 123, the first connecting section; 124, the first docking section; 200, the second rotating assembly; 210, the second rotating member; 211, the mating portion; 220, the second docking member; 221, the second docking portion; 222, the second sleeve; 223, the second connecting section; 224, the second docking section; 310, the first connecting rod; 320, the second connecting rod; 400, the angle measuring mechanism; 410, the angular scale line; 420, the pointer; 500, the locking member; 600, the spinal screw. Detailed implementation manners
[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.
[0019] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object may be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.
[0020] The angle measuring device for a spinal curved rod provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings, through specific embodiments and their application scenarios.
[0021] As Figures 1 to 6 shown, the embodiments of the present application disclose an angle measuring device for a spinal curved rod, including a first rotating assembly 100 and a second rotating assembly 200. The first rotating assembly 100 is rotatably connected to the second rotating assembly 200. A first docking portion 121 is provided on the first rotating assembly 100, and a second docking portion 221 is provided on the second rotating assembly 200. The first docking portion 121 and the second docking portion 221 are located on the same side, and both the first docking portion 121 and the second docking portion 221 can be docked with the spinal screw 600. Specifically, the first rotating assembly 100 and the second rotating assembly 200 in this embodiment cooperate to form a rotating assembly. The fact that the first docking portion 121 and the second docking portion 221 are located on the same side means that the first docking portion 121 and the second docking portion 221 are located on the same side of the rotating assembly.
[0022] An angle measuring mechanism 400 is provided between the first rotating assembly 100 and the second rotating assembly 200. The angle measuring mechanism 400 can measure the included angle between the spinal screw 600 docked by the first docking portion 121 and the spinal screw 600 docked by the second docking portion 221. Specifically, the first rotating assembly 100 and the second rotating assembly 200 are rotatably connected. When the included angles between the two spinal screws 600 to be measured are different, the relative rotation of the first rotating assembly 100 and the second rotating assembly 200 can be controlled, so that the first docking portion 121 and the second docking portion 221 are respectively successfully docked with the two spinal screws 600 to be measured.
[0023] In this application, the first rotating assembly 100 and the second rotating assembly 200 are rotatably connected, and an angle measuring mechanism 400 is provided therebetween. The first rotating assembly 100 is provided with a first docking portion 121, and the second rotating assembly 200 is provided with a second docking portion 221. The first docking portion 121 and the second docking portion 221 are respectively connected to a spinal screw 600. After connection, the angle measuring mechanism 400 can measure the included angle between the spinal screw 600 docked by the first docking portion 121 and the spinal screw 600 docked by the second docking portion 221. And according to the included angle between the above two spinal screws 600, the bending angle of the connecting rod can be obtained. Taking this bending angle as a reference to bend the connecting rod can reduce the risk of insufficient or excessive bending of the connecting rod when bending the connecting rod, so as to improve the accuracy of the bending angle of the connecting rod and the reduction effect on spinal fractures.
[0024] Optionally, the docking described in this application can be plugging, socketing, threaded connection, snap connection, abutting, etc. This application does not limit the specific form of docking.
[0025] It should be noted that after obtaining the included angle between the two spinal screws 600, the bending angle of the connecting rod can be obtained according to the included angle between the upper end plate of the upper vertebra and the lower end plate of the lower vertebra in which the two spinal screws 600 are implanted and the included angle between the two spinal screws 600.
[0026] In an optional embodiment, the first rotating assembly 100 includes a first rotating member 110 and a first docking member 120, the second rotating assembly 200 includes a second rotating member 210 and a second docking member 220, the angle measuring mechanism 400 is disposed between the first rotating member 110 and the second rotating member 210, the first docking member 120 is connected to the first rotating member 110, and the second docking member 220 is connected to the second rotating member 210. The first docking member 120 and the second docking member 220 are located on the same side, the free end of the first docking member 120 has a first docking portion 121, and the free end of the second docking member 220 has a second docking portion 221. It should be noted that the free end of the first docking member 120 is the end of the first docking member 120 that faces away from the first rotating member 110, and the free end of the second docking member 220 is the end of the second docking member 220 that faces away from the second rotating member 210.
[0027] In this embodiment, the straight line on which the axis of the first docking member 120 lies intersects with the straight line on which the axis of the first rotating member 110 lies, and the straight line on which the axis of the second docking member 220 lies intersects with the straight line on which the axis of the second rotating member 210 lies. After the first docking portion 121 on the first docking member 120 docks with a spinal screw 600, the axis of the first docking member 120 is parallel to or coaxial with the axis of the corresponding spinal screw 600. After the second docking portion 221 on the second docking member 220 docks with another spinal screw 600, the axis of the second docking member 220 is parallel to or coaxial with the axis of the corresponding spinal screw 600. 0 are parallel or coaxial, so the angle between the two spinal screws 600 to be measured is the same as the angle between the first docking member 120 and the second docking member 220. Thus, the angle measuring mechanism 400 of this embodiment can obtain the angle between the two spinal screws 600 to be measured by measuring the angle between the first docking member 120 and the second docking member 220. Acquiring the angle between the first docking member 120 and the second docking member 220 is easier to achieve. Therefore, the structure of this embodiment makes it easier for the angle measuring mechanism 400 to measure the angle between the two spinal screws 600. It should be noted that the first rotating member 110 and the first docking member 120 can be two separate components, or the first rotating member 110 and the first docking member 120 can be two parts of a single component. Similarly, the second rotating member 210 and the second docking member 220 can be two separate components, or the second rotating member 210 and the second docking member 220 can be two parts of a single component.
[0028] Optionally, the first rotating member 110, the second rotating member 210, the first docking member 120 and the second docking member 220 may be rod-shaped structures or plate-shaped structures. When the first rotating member 110 and the second rotating member 210 are rod-shaped structures or plate-shaped structures, the first docking member 120 and the second docking member 220 may be protrusions.
[0029] In an alternative embodiment, the first docking member 120 and the first rotating member 110 are slidably engaged along the extending direction of the first rotating member 110. In this embodiment, the first docking member 120 can slide relative to the first rotating member 110. Thus, when the distance between the two spinal screws 600 to be measured changes, the first docking member 120 can be controlled to slide relative to the first rotating member 110, so that the first docking portion 121 and the second docking portion 221 can successfully dock with the corresponding spinal screws 600.
[0030] And / or, in an alternative embodiment, the second docking member 220 and the second rotating member 210 are slidably engaged along the extending direction of the second rotating member 210. In this embodiment, the second docking member 220 can slide relative to the second rotating member 210. Thus, when the distance between the two spinal screws 600 to be measured changes, the second docking member 220 can be controlled to slide relative to the second rotating member 210, so that the first docking portion 121 and the second docking portion 221 can successfully dock with the corresponding spinal screws 600.
[0031] It should be noted that the first docking member 120 may not slide relative to the first rotating member 110, and the second docking member 220 may not slide relative to the second rotating member 210 either. In this case, the measuring device for spinal bending rods of the present application is only used to measure the included angle between two spinal screws 600 at the same distance.
[0032] In an alternative embodiment, a first collar 122 is provided at the connecting end of the first docking member 120, and the first collar 122 is slidably sleeved outside the first rotating member 110. In this embodiment, the connecting end of the first docking member 120 refers to the end where the first docking member 120 is connected to the first rotating member 110. The first collar 122 at the connecting end of the first docking portion 121 is sleeved outside the first rotating member 110. Thus, the first collar 122 can slide to any position of the first rotating member 110. That is to say, the sliding path of the first collar 122 is longer, and the adjustable range of the distance between the first docking portion 121 and the second docking portion 221 is larger, which can make the applicable range of the angle measuring device for spinal bending rods wider.
[0033] And / or, in an alternative embodiment, a second collar 222 is provided at the connecting end of the second docking member 220, and the second collar 222 is slidably sleeved outside the second rotating member 210. In this embodiment, the connecting end of the second docking member 220 refers to the end where the second docking member 220 is connected to the second rotating member 210. The second collar 222 at the connecting end of the second docking portion 221 is sleeved outside the second rotating member 210. Thus, the second collar 222 can slide to any position of the second rotating member 210. That is to say, the sliding path of the second collar 222 is relatively long, and the adjustable range of the distance between the first docking portion 121 and the second docking portion 221 is relatively large, which can make the applicable range of the angle measuring device for spinal curved rods wider. It should be noted that when this embodiment is combined with the previous embodiment, the adjustable range of the distance between the first docking portion 121 and the second docking portion 221 is even larger.
[0034] In an alternative embodiment, the first docking member 120 includes a first connecting section 123 and a first docking section 124 that are bent relative to each other. The first connecting section 123 is slidably sleeved with the first rotating member 110, and the free end of the first docking section 124 has a first docking portion 121. Specifically, the free end of the first docking section 124 refers to the end of the first docking section 124 that is away from the first connecting section 123. In this embodiment, the first connecting section 123 is slidably sleeved with the first rotating member 110. When the distance between two spinal screws 600 to be measured changes, the first connecting section 123 can be driven to slide relative to the first rotating member 110 to change the overlapping length between the first connecting section 123 and the first rotating member 110, that is, the length of the first connecting section 123 extending out of the first rotating member 110, so that the first docking portion 121 and the second docking portion 221 can successfully dock with the corresponding spinal screws 600. In addition, when measurement is not required, the overlapping length between the first connecting section 123 and the first rotating member 110 can be maximized. At this time, the length of the first connecting section 123 extending out of the first rotating member 110 is minimized, which can reduce the length dimension of the angle measuring device for spinal curved rods for easy storage.
[0035] Optionally, the first connecting section 123 can be sleeved inside or outside the first rotating member 110, and the present application does not limit this.
[0036] And / or, in an alternative embodiment, the second docking member 220 includes a second connecting section 223 and a second docking section 224 that are bent relative to each other. The second connecting section 223 is slidably sleeved with the second rotating member 210, and the free end of the second docking section 224 has a second docking portion 221. Specifically, the free end of the second docking section 224 refers to the end of the second docking section 224 that is away from the second connecting section 223.
[0037] In this embodiment, the second connecting section 223 is slidably sleeved on the second rotating member 210. When the distance between the two spinal screws 600 to be measured changes, the second connecting section 223 can be driven to slide relative to the second rotating member 210 to change the overlapping length between the second connecting section 223 and the second rotating member 210, that is, the length by which the second connecting section 223 extends out of the second rotating member 210, so that the first docking portion 121 and the second docking portion 221 can successfully dock with the corresponding spinal screws 600. In addition, when measurement is not required, the overlapping length between the second connecting section 223 and the second rotating member 210 can be maximized. At this time, the length by which the second connecting section 223 extends out of the second rotating member 210 is minimized, which can reduce the length dimension of the angle measuring device for the spinal curved rod for easy storage.
[0038] Optionally, the second connecting section 223 can be sleeved inside or outside the second rotating member 210, and this application does not limit this.
[0039] In an alternative embodiment, the angle measuring device for the spinal curved rod further includes a locking member 500. The locking member 500 can be switched between a first position and a second position. When the locking member 500 is in the first position, the locking member 500 locks the first docking member 120 and restricts the first docking member 120 from sliding relative to the first rotating member 110. When the locking member 500 is in the second position, the locking member 500 unlocks the first docking member 120, and the first docking member 120 can slide relative to the first rotating member 110.
[0040] In this embodiment, when the locking member 500 is switched to the second position, the first docking member 120 can slide relative to the first rotating member 110. At this time, by controlling the first docking member 120 to slide relative to the first rotating member 110, the first docking portion 121 and the second docking portion 221 can both be docked with the corresponding spinal screws 600. Then, the locking member 500 is switched to the first position to lock the first docking member 120. At this time, the first docking member 120 cannot slide relative to the first rotating member 110, and their relative positions are fixed, so it is convenient to measure the included angle between the two spinal screws 600. Moreover, after the angle measurement is completed, the angle measuring device for the spinal curved rod can be disconnected from the spinal screws 600. During this process, the locking member 500 remains in the first position, which can fix the relative position between the first docking member 120 and the first rotating member 110, thus facilitating the measurement of the distance between the first docking portion 121 and the second docking portion 221 outside the human body. By this distance and the bending angle of the connecting rod, the length of the connecting rod can be confirmed. It can be seen that by setting the locking member 500 in this embodiment, the length of the connecting rod can be accurately obtained.
[0041] In some embodiments, the locking member 500 may be a setscrew, which is threadedly connected to the first docking member 120. When the locking member 500 is in the first position, the setscrew abuts against the first rotating member 110; when the locking member 500 is in the second position, the setscrew is separated from the first rotating member 110. Of course, the locking member 500 may also be a clamping device or the like. The present application does not limit the type of the locking member 500, as long as the locking member 500 can fix the relative position between the first docking member 120 and the first rotating member 110.
[0042] In an alternative embodiment, both the first docking portion 121 and the second docking portion 221 are threaded connection portions. In this embodiment, both the first docking portion 121 and the second docking portion 221 are threaded connection portions, and both can be threadedly connected to the corresponding spinal screw 600. Threaded connection can ensure the coaxiality or parallelism between the two connecting members. Therefore, after the first docking portion 121 and the second docking portion 221 are respectively threadedly connected to the corresponding spinal screw 600, the coaxiality or axis parallelism between the first docking portion 121 and the corresponding spinal screw 600 is relatively good. In this way, the accuracy of the included angle between the two spinal screws 600 measured by the angle measuring mechanism 400 can be improved. Moreover, since the head of the spinal screw 600 itself has a threaded hole, the first docking portion 121 and the second docking portion 221 can be respectively threadedly docked with the corresponding spinal screw 600 without changing the structure of the spinal screw 600.
[0043] Since the first docking portion 121 and the second docking portion 221 are respectively threadedly connected to the corresponding spinal screw 600, in some embodiments, the first docking member 120 is detachably connected to the first rotating member 110, and the second docking member 220 is detachably connected to the second rotating member 210 for facilitating the disassembly of the angle measuring device for spinal bending rods from the spinal screw 600. The specific operation process of this embodiment is as follows. When it is necessary to connect the angle measuring device for spinal bending rods to the spinal screw 600, the first docking member 120 and the second docking member 220 can be first disassembled from the first rotating member 110 and the second rotating member 210 respectively, and then the first docking member 120 and the second docking member 220 are respectively connected to the corresponding spinal screw 600, and finally the first docking member 120 and the second docking member 220 are respectively connected to the first rotating member 110 and the second rotating member 210. At this time, the angle measuring mechanism 400 can measure the included angle between the two spinal screws 600. When it is necessary to disassemble the angle measuring device for spinal bending rods from the spinal screw 600, only the first docking member 120 and the second docking member 220 need to be disassembled from the first rotating member 110 and the second rotating member 210 respectively, and then the first docking member 120 and the second docking member 220 are respectively disassembled from the corresponding spinal screw 600.
[0044] In an alternative embodiment, both the first docking member 120 and the second docking member 220 include a first connecting rod 310 and a second connecting rod 320. Each first connecting rod 310 is threadedly connected to the corresponding second connecting rod 320. The two first connecting rods 310 are respectively connected to the first rotating member 110 and the second rotating member 210. The free ends of the second connecting rods 320 each have a threaded connection portion. Specifically, the free end of the second connecting rod 320 is the end of the second connecting rod 320 that faces away from the first connecting rod 310. Optionally, the first connecting rod 310 may be sleeved outside the second connecting rod 320 or inside the second connecting rod 320, and the present application does not limit this.
[0045] The first connecting rod 310 and the second connecting rod 320 are connected by a threaded structure. The pitch of the threaded structure is the same as the pitch of the threaded connection portion, and the helix direction of the threaded structure is the same as the helix direction of the threaded connection portion.
[0046] The specific operation process of this embodiment is as follows. When it is necessary to connect the spinal angulation rod measuring device to the spinal screw 600, the first docking portion 121 can be aligned with a spinal screw 600, and the second connecting rod 320 of the first docking member 120 is rotated to increase the length of the second connecting rod 320 extending out of the corresponding first connecting rod 310. Moreover, the part of the second connecting rod 320 extending out of the first connecting rod 310 will be threadedly connected to the corresponding spinal screw 600. Similarly, when the second docking portion 221 is aligned with another spinal screw 600 and the second connecting rod 320 of the second docking member 220 is rotated, the second docking portion 221 can be threadedly connected to the corresponding spinal screw 600. When it is necessary to disassemble the spinal angulation rod measuring device from the spinal screw 600, it is only necessary to rotate the two second connecting rods 320 in the opposite direction respectively. It can be seen that it is relatively convenient to assemble and disassemble the spinal angulation rod measuring device using the structure of this embodiment.
[0047] In an alternative embodiment, the first docking member 120, the second docking member 220, the first rotating member 110, and the second rotating member 210 are all rod-shaped structural members. The first docking member 120 is perpendicular to the first rotating member 110, and the second docking member 220 is perpendicular to the second rotating member 210. In this embodiment, the sum of the angles between the first docking member 120 and the second docking member 220, between the first rotating member 110 and the second rotating member 210, between the first docking member 120 and the first rotating member 110, and between the second docking member 220 and the second rotating member 210 is 360°. Since the first docking member 120 is perpendicular to the first rotating member 110 and the second docking member 220 is perpendicular to the second rotating member 210, the sum of the angles between the first docking member 120 and the second docking member 220 and between the first rotating member 110 and the second rotating member 210 is 180°. When the first docking member 120 and the second docking member 220 are coaxial or parallel to the corresponding spinal screws 600 respectively, the angle between the two spinal screws 600 and the angle between the first rotating member 110 and the second rotating member 210 are supplementary angles. In this way, it is more convenient for the angle measuring mechanism 400 to indirectly measure the angle between the two spinal screws 600 by measuring the angle between the first rotating member 110 and the second rotating member 210. Of course, the first docking member 120 and the first rotating member 110 may not be perpendicular, and the angle between them may be an acute angle or an obtuse angle at this time; the second docking member 220 and the second rotating member 210 may not be perpendicular, and the angle between them may be an acute angle or an obtuse angle at this time.
[0048] In an alternative embodiment, the first docking member 120, the second docking member 220, the first rotating member 110, and the second rotating member 210 are all rod-shaped structural members. The angle measuring mechanism 400 includes an angular scale line 410 and a pointer 420. The first rotating member 110 is provided with the angular scale line 410, and the second rotating member 210 is provided with the pointer 420. The pointer 420 can rotate relative to the second rotating member 210. The first rotating member 110 is provided with a clamping portion 111, and the second rotating member 210 is provided with a mating portion 211. The first rotating member 110 can rotate relative to the second rotating member 210 to a first position. When the first rotating member 110 is in the first position, the first docking member 120 is parallel to the second docking member 220, and the clamping portion 111 is in clamping engagement with the mating portion 211.
[0049] In this embodiment, when the first docking member 120 and the second docking member 220 are parallel, the two spinal screws 600 are also parallel to each other. At this time, the pointer 420 will point to the zero graduation line of the angular graduation line 410, and at this time, the first rotating member 110 and the second rotating member 210 are engaged and matched, and the positions between the first rotating member 110 and the second rotating member 210 will not change. If the pointer 420 does not point to the zero graduation line when the first rotating member 110 is in the first position, the pointer 420 can be rotated at this time so that the pointer 420 points to the zero graduation line, thereby calibrating the pointer 420. It can be seen that with the structure of this embodiment, it is convenient to calibrate the pointer 420.
[0050] In an alternative embodiment, the engaging portion 111 includes an engaging part and an elastic member 102. The elastic member 102 is disposed on the first rotating member 110. The engaging ball 101 is connected to the elastic member 102, and the mating portion 211 is a slot. The engaging ball 101 can be pressed tightly in the slot under the action of the elastic member 102.
[0051] In another alternative embodiment, please refer to Figure 6 , the angle measuring mechanism 400 can also be an electronic angle gauge, which includes a capacitive grating sensor and a display screen. The capacitive grating sensor is communicatively connected to the display screen. The capacitive grating sensor includes a fixed grating and a moving grating. The included angle between the two spinal screws 600 is measured by the fixed grating and the moving grating, and the above-mentioned included angle is displayed through the display screen.
[0052] In the above embodiments of the present application, the differences between the various embodiments are mainly described. As long as the different optimized features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. Considering the simplicity of the text, it will not be elaborated here. The embodiments of the present application have been described above with reference to the drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.
Claims
1. An angle measuring device for a spinal curved rod, characterized in that, It includes a first rotating component (100) and a second rotating component (200). The first rotating component (100) is rotatably connected to the second rotating component (200). A first docking portion (121) is provided on the first rotating component (100), and a second docking portion (221) is provided on the second rotating component (200). The first docking portion (121) and the second docking portion (221) are located on the same side, and both the first docking portion (121) and the second docking portion (221) can be docked with a spinal screw (600). An angle measuring mechanism (400) is provided between the first rotating component (100) and the second rotating component (200). The angle measuring mechanism (400) can measure the included angle between the spinal screw (600) docked by the first docking portion (121) and the spinal screw (600) docked by the second docking portion (221).
2. The angle measuring device for a spinal curved rod according to claim 1, wherein The first rotating component (100) includes a first rotating member (110) and a first docking member (120). The second rotating component (200) includes a second rotating member (210) and a second docking member (220). The angle measuring mechanism (400) is provided between the first rotating member (110) and the second rotating member (210). The first docking member (120) is connected to the first rotating member (110), and the second docking member (220) is connected to the second rotating member (210). The first docking member (120) and the second docking member (220) are located on the same side. The free end of the first docking member (120) has the first docking portion (121), and the free end of the second docking member (220) has the second docking portion (221).
3. The angle measuring device for a spinal curved rod according to claim 2, wherein The first docking member (120) and the first rotating member (110) are in sliding fit along the extending direction of the first rotating member (110); and / or The second docking member (220) and the second rotating member (210) are in sliding fit along the extending direction of the second rotating member (210).
4. The angle measuring device for a spinal curved rod according to claim 3, characterized in that, A first collar (122) is provided at the connecting end of the first docking member (120). The first collar (122) is slidably sleeved outside the first rotating member (110); and / or A second collar (222) is provided at the connecting end of the second docking member (220). The second collar (222) is slidably sleeved outside the second rotating member (210).
5. The angle measuring device for spinal curved rods according to claim 3, characterized in that, The first docking member (120) includes a first connecting section (123) and a first docking section (124) that are bent relative to each other. The first connecting section (123) is slidably sleeved on the first rotating member (110), and the free end of the first docking section (124) has the first docking portion (121); and / or The second docking member (220) includes a relatively bent second connecting section (223) and a second docking section (224). The second connecting section (223) is slidably sleeved on the second rotating member (210), and the free end of the second docking section (224) has the second docking portion (221).
6. The angle measuring device for a spinal curved rod according to any one of claims 3 to 5, characterized in that, The angle measuring device for the spinal curved rod further includes a locking member (500), and the locking member (500) can be switched between a first position and a second position; When the locking member (500) is in the first position, the locking member (500) locks the first docking member (120) and restricts the first docking member (120) from sliding relative to the first rotating member (110); When the locking member (500) is in the second position, the locking member (500) unlocks the first docking member (120), and the first docking member (120) can slide relative to the first rotating member (110).
7. The angle measuring device for a spinal curved rod according to any one of claims 2 to 5, characterized in that, Both the first docking portion (121) and the second docking portion (221) are threaded connection portions.
8. The angle measuring device for a spinal curved rod according to claim 7, characterized in that, Both the first docking member (120) and the second docking member (220) include a first connecting rod (310) and a second connecting rod (320). Each first connecting rod (310) is threadedly connected to the corresponding second connecting rod (320). The two first connecting rods (310) are respectively connected to the first rotating member (110) and the second rotating member (210), and the free ends of each second connecting rod (320) have the threaded connection portion; The first connecting rod (310) and the second connecting rod (320) are connected by a threaded structure. The pitch of the threaded structure is the same as the pitch of the threaded connection portion, and the helix direction of the threaded structure is the same as the helix direction of the threaded connection portion.
9. The angle measuring device for a spinal curved rod according to any one of claims 2 to 5, characterized in that, The first docking member (120), the second docking member (220), the first rotating member (110), and the second rotating member (210) are all rod-shaped structural members. The first docking member (120) is perpendicular to the first rotating member (110), and the second docking member (220) is perpendicular to the second rotating member (210).
10. The angle measuring device for spinal curved rods according to any one of claims 2 to 5, characterized in that, The first docking member (120), the second docking member (220), the first rotating member (110), and the second rotating member (210) are all rod-shaped structural members. The angle measuring mechanism (400) includes an angular scale line (410) and a pointer (420). The first rotating member (110) is provided with the angular scale line (410), and the second rotating member (210) is provided with the pointer (420); The pointer (420) can rotate relative to the second rotating member (210). A clamping portion (111) is provided on the first rotating member (110), and a mating portion (211) is provided on the second rotating member (210). The first rotating member (110) can rotate relative to the second rotating member (210) to a first position; When the first rotating member (110) is in the first position, the first docking member (120) is parallel to the second docking member (220), and the clamping portion (111) is in clamping engagement with the mating portion (211).