Connecting and fixing device for ruler

Abstract

The utility model discloses a connecting and fixing device for a scaleplate, which relates to the technical field of surgical robots and comprises a quick locking mechanism, a first joint arm component is inserted into one side of the quick locking mechanism, a second joint arm is arranged on one side, far away from the quick locking mechanism, of the first joint arm component, and the second joint arm is connected with the quick locking mechanism. One side of the second joint arm is provided with a scale unit with a circular mark point, the first joint arm can be connected into a quick insertion and extraction structure, so that the first joint arm is more convenient and quicker to mount, namely, the scale is more convenient and quicker to mount, and the working efficiency is improved. Locking is safe and reliable, great convenience is brought to operation of a doctor, time used by an operation is saved, the success rate of the operation is increased, the position of the ruler can be adjusted through a universal ball, the operation of the doctor is more scientific and simpler, the position of the ruler can be adjusted at will, and the ruler can be used more conveniently and quickly by the doctor.

Description

Technical Field

[0001] This utility model relates to the field of surgical robot technology, specifically to a connecting and fixing device for a ruler. Background Technology

[0002] During orthopedic surgery, a ruler needs to be fixed to a robotic arm. Before surgery, the ruler needs to be placed above the surgical target. The CTCB machine scans the surgical target together, and the marker points of the ruler can be identified in the reconstructed 3D image. The mapping relationship between the ruler and the surgical target can be calculated through an algorithm. The ruler is fixed to the robotic arm, and the relationship between the robotic arm and the ruler can be calculated, thus establishing the relationship between the robotic arm and the surgical target. Once the image coordinate system is established, the position of the ruler cannot be moved; otherwise, the mapping relationship must be reconfigured. The movement of the ruler affects the accuracy of the surgery and its success or failure. This utility model structure allows for quick plugging and unplugging of the ruler holder and the robotic arm during installation. The ruler position can be adjusted at will, and the locking is safe and reliable. Utility Model Content

[0003] To address the problems of inconvenient position adjustment and cumbersome operation of existing rulers, the purpose of this utility model is to provide a connecting and fixing device for rulers.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a connecting and fixing device for a ruler, including a quick locking mechanism, a first joint arm assembly is inserted into one side of the quick locking mechanism, a second joint arm is provided on the side of the first joint arm assembly away from the quick locking mechanism, and a ruler unit with circular marking points is provided on one side of the second joint arm.

[0005] Preferably, the quick-locking mechanism includes a rod, a button, a movable shaft, a spring, a base plate, and bolts. A small hole is provided on the upper part of one side of the rod, and a large hole is provided on the lower part of one side of the rod. A central shaft is provided in the middle of the movable shaft, and a large shaft is fixedly installed on the lower part of the central shaft. A tapered surface is fixedly installed on the upper part of the large shaft. A small shaft is fixedly installed at the other end of the central shaft, and a small shaft screw is fixedly installed on one side of the small shaft. A button is provided on the upper part of the small shaft screw, and an internal thread is provided in the middle of the button. The threaded part of the button is installed on the upper part of the small shaft screw. A spring is installed on the lower part of the large shaft, and a base plate is installed on the lower part of the spring. Holes A and B are respectively provided on the upper part of the base plate, and bolts are slidably engaged in the middle of both holes A and B. A first threaded hole and a second threaded hole are provided on the lower part of one side of the rod, and one side of each of the two bolts is threaded into the first threaded hole and the second threaded hole, respectively.

[0006] Preferably, the first articulated arm assembly includes a first articulated arm, a stop knob, a first stop shaft, a ball head bolt, and a lock nut. A first circular hole is formed on one side of the first articulated arm to cooperate with the stop knob, and a second circular hole is formed on one side of the first articulated arm to cooperate with the first stop shaft. A first lead screw is mounted on one side of the first articulated arm. A protruding rod is mounted on the lower part of the stop knob, and a stop shaft body is mounted on the lower part of the protruding rod. A stop shaft with a large stop shaft is provided on the first stop shaft, and a stop shaft arc groove is formed on one side of the large stop shaft. The other side of the stop shaft is provided with a spherical groove for the stop shaft. The arc groove of the stop shaft is in contact with the protruding rod. A ball head body is installed on one side of the ball head bolt. The ball head body is in contact with the spherical groove of the stop shaft. A locking nut is provided on one side of the ball head bolt. The locking nut has a locking internal thread. The locking nut is threaded on the outer surface of the first lead screw. A spherical groove is provided in the middle of the locking nut. One side of the ball head body is locked inside the spherical groove. A ball head lead screw is installed on the other end of the ball head bolt.

[0007] Preferably, one side of the second articulated arm is provided with a first articulated arm connecting internal thread, and the ball-end screw is threaded inside the first articulated arm connecting internal thread. The other side of the second articulated arm is provided with a scale connecting screw, and the outer surface of the scale connecting screw is threaded with a scale unit with circular marking points. A second pin hole is opened on the side of the second articulated arm near the first articulated arm connecting internal thread, and a first pin hole corresponding to the second pin hole is opened on the side of the ball-end screw. A pin is inserted in the middle of the first pin hole and the second pin hole.

[0008] Preferably, a connecting rod is installed on one side of the first articulated arm, a conical groove is formed in the middle of one side of the connecting rod, a slot is formed on one side of the rod body, the connecting rod is slidably inserted into the inside of the connecting rod, a clearance groove is formed in the middle of the conical groove, and the small shaft is slidably locked inside the clearance groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This application enables the first joint arm to be connected as a quick-insert and pull-out structure, thereby making the installation of the first joint arm more convenient and faster, that is, the installation of the scale is more convenient and faster, and the locking is safe and reliable, which greatly facilitates the operation of doctors, thereby saving the time used in the operation and improving the success rate of the operation.

[0011] 2. The ruler can be adjusted in position via a universal ball joint, making the surgical procedure more scientific and simple for doctors. Furthermore, the ruler position can be adjusted at will, making it more convenient and faster for doctors to use. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the connection and fixing device for a ruler according to this utility model.

[0014] Figure 2 This is an exploded view of the quick-release locking mechanism of this utility model.

[0015] Figure 3 These are top and bottom views of the rod connection mechanism of this utility model.

[0016] Figure 4 This is a button diagram of this utility model.

[0017] Figure 5 This is a diagram of the movable axis of this utility model.

[0018] Figure 6 This is a drawing of the base plate of this utility model.

[0019] Figure 7 This is an exploded view of the first articulated arm assembly of this utility model.

[0020] Figure 8 This is a diagram of the first articulated arm of this utility model.

[0021] Figure 9 This is a diagram of the stop knob of this utility model.

[0022] Figure 10 This is a diagram of the stop shaft of this utility model.

[0023] Figure 11 This is a drawing of the ball head bolt of this utility model.

[0024] Figure 12 This is a diagram of the locking nut of this utility model.

[0025] Figure 13 This is a diagram of the second articulated arm of this utility model.

[0026] Figure 14 This is a diagram showing the connection between the second articulated arm and the first articulated arm of this utility model.

[0027] In the diagram: 1. First articulated arm assembly; 11. First articulated arm; 111. Connecting rod; 112. First circular hole; 113. First lead screw; 114. Second circular hole; 1111. Clearance groove; 115. Conical groove; 12. Stop knob; 121. Stop shaft body; 122. Protruding rod; 13. First stop shaft; 131. Stop shaft main shaft; 132. Stop shaft arc groove; 133. Stop shaft spherical groove; 14. Ball head bolt; 141. Ball head body; 142. Ball head lead screw; 143. First pin hole; 15. Locking nut; 151. Locking internal thread; 152. Spherical groove; 2. Two-joint arm; 21. First joint arm connecting internal thread; 22. Second pin hole; 23. Scale connecting screw; 3. Quick locking mechanism; 31. Rod body; 311. Slot; 312. Small hole; 313. Large hole; 314. First threaded hole; 315. Second threaded hole; 32. Button; 321. Button internal thread; 33. Movable shaft; 331. Small shaft; 332. Middle shaft; 333. Conical surface; 334. Large shaft; 335. Small shaft screw; 34. Spring; 35. Base plate; 351. Hole A; 352. Hole B; 36. Bolt; 4. Scale unit with circular markings; 5. Pin. Detailed Implementation

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

[0029] Example: Figure 1-14 As shown, this utility model provides a connecting and fixing device for a ruler, including a quick-locking mechanism 3, a first joint arm assembly 1 inserted on one side of the quick-locking mechanism 3, a second joint arm 2 on the side of the first joint arm assembly 1 away from the quick-locking mechanism 3, and a ruler unit 4 with circular marking points on one side of the second joint arm 2.

[0030] The quick-locking mechanism 3 includes a rod 31, a button 32, a movable shaft 33, a spring 34, a base plate 35, and a bolt 36. A small hole 312 is provided on the upper part of one side of the rod 31, and a large hole 313 is provided on the lower part of one side of the rod 31. A central shaft 332 is provided in the middle of the movable shaft 33, and a large shaft 334 is fixedly installed on the lower part of the central shaft 332. A conical surface 333 is fixedly installed on the upper part of the large shaft 334. A small shaft 331 is fixedly installed at the other end of the central shaft 332, and a small shaft thread is fixedly installed on one side of the small shaft 331. A button 32 is provided on the upper part of the rod 335 and the button 32 has an internal thread 321 in the middle. The thread in the middle of the button 32 is installed on the upper part of the small shaft screw 335. A spring 34 is installed on the lower part of the large shaft 334 and a base plate 35 is installed on the lower part of the spring 34. A small hole 312 is provided on the rod 31 for the small shaft 331 on the movable shaft 33 to pass through. The small shaft screw 335 on the movable shaft 33 is connected and fixed to the button internal thread 321 on the button 32.

[0031] The first articulated arm assembly 1 includes a first articulated arm 11, a stop knob 12, a first stop shaft 13, a ball head bolt 14, and a locking nut 15. A first circular hole 112 is formed on one side of the first articulated arm 11 to cooperate with the stop knob 12. A second circular hole 114 is formed on one side of the first articulated arm 11 to cooperate with the first stop shaft 13. A first lead screw 113 is mounted on one side of the first articulated arm 11. A protruding rod 122 is mounted on the lower part of the stop knob 12, and a stop shaft body 121 is mounted on the lower part of the protruding rod 122. A stop shaft 131 is provided on the first stop shaft 13, and a stop shaft arc groove 132 is formed on one side of the stop shaft 131. The other side of the stop shaft 131 is provided with a stop shaft spherical groove 133. The stop shaft arc groove 132 is in contact with the protrusion 122. A ball head body 141 is installed on one side of the ball head bolt 14. The ball head body 141 is in contact with the stop shaft spherical groove 133. A locking nut 15 is provided on one side of the ball head bolt 14. A locking internal thread 151 is provided inside the locking nut 15. The locking nut 15 is threaded on the outer surface of the first lead screw 113. A spherical groove 152 is provided in the middle of the locking nut 15. One side of the ball head body 141 is locked inside the spherical groove 152. A ball head lead screw 142 is installed on the other end of the ball head bolt 14.

[0032] The second articulated arm 2 has a first articulated arm connecting internal thread 21 on one side, and the ball head screw 142 is threadedly installed inside the first articulated arm connecting internal thread 21.

[0033] A scale connecting screw 23 is installed on the other side of the second articulated arm 2, and a scale unit 4 with circular markings is threaded on the outer surface of the scale connecting screw 23.

[0034] The second articulated arm 2 has a second pin hole 22 on the side near the internal thread 21 of the first articulated arm. The ball head screw 142 has a first pin hole 143 on one side corresponding to the second pin hole 22. A pin 5 is inserted into the middle of the first pin hole 143 and the second pin hole 22. By setting the pin 5, the pin 5 is connected to the first pin hole 143 through the second pin hole 22, preventing the second articulated arm 2 from loosening relative to the ball head screw 14.

[0035] A connecting rod 111 is installed on one side of the first joint arm 11. A tapered groove 115 is provided in the middle of one side of the connecting rod 111. A slot 311 is provided on one side of the rod body 31. The connecting rod 111 is slidably inserted into the inside of the connecting rod 111. An avoidance groove 1111 is provided in the middle of the tapered groove 115. The small shaft 331 is slidably locked inside the avoidance groove 1111.

[0036] The upper part of the base plate 35 is provided with holes A351 and B352 respectively. Bolts 36 are slidably locked in the middle of holes A351 and B352. The lower part of one side of the rod body 31 is provided with a first threaded hole 314 and a second threaded hole 315. One side of the two bolts 36 is threaded into the first threaded hole 314 and the second threaded hole 315 respectively. By setting the bolts 36, the bolts 36 are locked to the first threaded hole 314 and the second threaded hole 315 on the rod body 31 through the holes A351 and B352 on the base plate 35, thereby fixing the base plate 35.

[0037] Working principle: In actual use, one side of the quick-locking mechanism 3 is connected to the end of the robot. When button 32 is pressed, the conical surface 333 on the movable shaft 33 moves down below the bottom surface of the slot 311 of the rod 31, compressing the spring 34. The connecting rod 111 on the first joint arm 11 is inserted into the slot 311. The small shaft 331 on the movable shaft 33 is concentric with the clearance groove 1111. When button 32 is released, the elastic force of the spring 34 forces the movable shaft 33 to move upward, so that the conical surface 333 on the movable shaft 33 coincides with the conical groove 115 of the connecting rod 111, thereby firmly fixing the first joint arm 11. Pressing button 32 again allows the first joint arm 11 to be quickly pulled out. The first joint arm 11 is provided with a first round hole 112 for placing the stop knob 12 to stop the shaft 121. The articulated arm 11 is provided with a second circular hole 114 for axially placing the first stop shaft 13. The stop shaft arc groove 132 on the first stop shaft 13 coincides with the protrusion 122 on the stop knob 12. The ball head body 141 on the ball head bolt 14 coincides with the stop shaft spherical groove 133 on the first stop shaft 13. The locking internal thread 151 on the locking nut 15 is screwed onto the first lead screw 113 on the first articulated arm 11. Rotating the stop knob 12 causes the protrusion 122 on the stop knob 12 to force the first stop shaft 13 to move axially. The ball head on the ball head bolt 14 is squeezed and tightly clamped between the stop shaft spherical groove 133 on the first stop shaft 13 and the spherical groove on the locking nut 15, thereby firmly fixing the ball head bolt 14 and the second articulated arm 2 connected to the ball head bolt 14.

[0038] The second articulated arm 2 is provided with a first articulated arm connecting internal thread 21 that connects to the ball head screw 142 on the ball head bolt 14 of the first articulated arm assembly. The scale unit 4 with circular marking points is threaded onto the upper part of the scale connecting screw 23, thereby fixing it.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A connecting and fixing device for a ruler, comprising a quick-locking mechanism (3), characterized in that: A first articulated arm assembly (1) is inserted into one side of the quick-locking mechanism (3), and a second articulated arm (2) is provided on the side of the first articulated arm assembly (1) away from the quick-locking mechanism (3). A ruler unit (4) with circular marking points is provided on one side of the second articulated arm (2).

2. The connecting and fixing device for a ruler as described in claim 1, characterized in that, The quick-locking mechanism (3) includes a rod (31), a button (32), a movable shaft (33), a spring (34), a base plate (35), and a bolt (36). A small hole (312) is provided on the upper part of one side of the rod (31), and a large hole (313) is provided on the lower part of one side of the rod (31). A central shaft (332) is provided in the middle of the movable shaft (33), and a large shaft (334) is fixedly installed on the lower part of the central shaft (332). A conical surface (333) is fixedly installed on the upper part of the large shaft (334). A small shaft (331) is fixedly installed at the other end of the central shaft (332). A small shaft screw (335) is fixedly installed on one side of the small shaft (331). A button (32) is provided on the upper part of the small shaft screw (335). An internal thread (321) is provided in the middle of the button (32). The thread in the middle of the button (32) is installed on the upper part of the small shaft screw (335). A spring (34) is installed on the lower part of the large shaft (334). A base plate (35) is installed on the lower part of the spring (34).

3. The connecting and fixing device for a ruler as described in claim 1, characterized in that, The first articulated arm assembly (1) includes a first articulated arm (11), a stop knob (12), a first stop shaft (13), a ball head bolt (14), and a locking nut (15). A first circular hole (112) is provided on one side of the first articulated arm (11) to cooperate with the stop knob (12). A second circular hole (114) is provided on one side of the first articulated arm (11) to cooperate with the first stop shaft (13). A first lead screw (113) is installed on one side of the first articulated arm (11). A protruding rod (122) is installed at the lower part of the stop knob (12), and a stop shaft body (121) is installed at the lower part of the protruding rod (122). A stop shaft large shaft (131) is provided on the first stop shaft (13), and a stop shaft arc groove (132) is provided on one side of the stop shaft large shaft (131). The other side of the stop shaft (131) is provided with a stop shaft spherical groove (133). The stop shaft arc groove (132) is in contact with the protruding rod (122). A ball head body (141) is installed on one side of the ball head bolt (14). The ball head body (141) is in contact with the stop shaft spherical groove (133). A locking nut (15) is provided on one side of the ball head bolt (14). A locking internal thread screw (151) is provided inside the locking nut (15). The locking nut (15) is threaded on the outer surface of the first lead screw (113). A spherical groove (152) is provided in the middle of the locking nut (15). One side of the ball head body (141) is locked inside the spherical groove (152). A ball head lead screw (142) is installed on the other end of the ball head bolt (14).

4. The connecting and fixing device for a ruler as described in claim 3, characterized in that, The second articulated arm (2) has a first articulated arm connecting internal thread (21) on one side, and the ball head screw (142) is threaded inside the first articulated arm connecting internal thread (21).

5. A connecting and fixing device for a ruler as described in claim 4, characterized in that, A scale connecting screw (23) is installed on the other side of the second articulated arm (2), and a scale unit (4) with circular marking points is threaded on the outer surface of the scale connecting screw (23).

6. The connecting and fixing device for a ruler as described in claim 4, characterized in that, The second joint arm (2) has a second pin hole (22) on the side near the internal thread (21) of the first joint arm connection. The ball head screw (142) has a first pin hole (143) on one side corresponding to the second pin hole (22). A pin (5) is inserted in the middle of the first pin hole (143) and the second pin hole (22).

7. A connecting and fixing device for a ruler as described in claim 2, characterized in that, A connecting rod (111) is installed on one side of the first articulated arm (11). A conical groove (115) is provided in the middle of one side of the connecting rod (111). A slot (311) is provided on one side of the rod body (31). The connecting rod (111) is slidably inserted into the inside of the connecting rod (111). A relief groove (1111) is provided in the middle of the conical groove (115). The small shaft (331) is slidably locked inside the relief groove (1111).

8. A connecting and fixing device for a ruler as described in claim 2, characterized in that, The upper part of the base plate (35) is provided with holes A (351) and B (352), and bolts (36) are slidably engaged in the middle of holes A (351) and B (352). The lower part of one side of the rod body (31) is provided with a first threaded hole (314) and a second threaded hole (315), and one side of the two bolts (36) is threaded into the first threaded hole (314) and the second threaded hole (315), respectively.

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