Calibration tool for radiosurgery robot system

Abstract

The utility model provides a calibration tool for a radiosurgery robot system, which comprises a hoop, a fixing ring, a supporting disc, a plurality of supporting rods connected with the hoop, the fixing ring and the supporting disc, a height adjusting supporting rod connected onto the supporting disc, a telescopic rod base and a telescopic adjusting rod penetrating through the telescopic rod base which are sequentially arranged from top to bottom, the metal ball is arranged at one end of the telescopic adjusting rod, and the first knurled flat screw and the second knurled flat screw are connected to the telescopic rod base in a threaded mode. The height adjusting supporting rod penetrates through the telescopic rod base, the first knurled flat head screw abuts against the telescopic adjusting rod, and the second knurled flat head screw abuts against the height adjusting supporting rod. The calibration tool used for the radiosurgery robot system is simple in structure, easy and convenient to operate and high in cost efficiency, and is used for improving the accuracy of the position of a treatment beam, achieving rapid calibration of the radiosurgery robot system in multiple dimensions, and ensuring the precision of radiotherapy.

Description

Technical Field

[0001] The utility model relates to the field of medical technology, in particular to a calibration tool for a radiosurgical robot system. Background Technique

[0002] The radiosurgical robot system includes a robot, an image-guided positioning system and a flat panel detector. The robot is equipped with an accelerator. The method includes: determining the installation error between the robot and the isocenter through the image-guided positioning system and the flat panel detector; determining the machining error corresponding to the accelerator and the installation mechanical structure error; determining the workspace positioning error corresponding to the robot and the accelerator configured on the robot. During the process of confirming the treatment beam error of the radiosurgical robot system, calibration work needs to be carried out. In the prior art, the calibration of the radiosurgical robot system usually relies on complex equipment and methods. For example, in the Chinese patent "Radiation-based Disposal Beam Position Calibration and Verification" with the application number 2018800496770, its general principle is to use a camera to obtain an image of the radiation beam incident on the body film, which is emitted by a radiation source. The method also includes determining the beam pointing offset based on the image and calibrating the position of the radiation source based on the beam pointing offset. These methods have problems such as long time consumption and high cost. The existing calibration methods are not only cumbersome to operate, but also have limited adaptability to the system and cannot meet the rapid and accurate calibration of multi-dimensional errors. Summary of the Utility Model

[0003] The purpose of the utility model is to disclose a calibration tool for a radiosurgical robot system, which has a simple structure, is easy to operate, has high cost-effectiveness, is used to improve the accuracy of the treatment beam position, realizes the rapid calibration of the radiosurgical robot system in multiple dimensions, and ensures the accuracy of radiotherapy.

[0004] To achieve the above purpose, the utility model provides a calibration tool for a radiosurgical robot system, which includes a hoop, a fixing ring, a support disk arranged in sequence from top to bottom, several support rods connecting the hoop, the fixing ring and the support disk, a height-adjustable support rod connected to the support disk, a telescopic rod base, a telescopic adjustment rod passing through the telescopic rod base, a metal ball arranged at one end of the telescopic adjustment rod, a first knurled flat head screw and a second knurled flat head screw screwed on the telescopic rod base; the height-adjustable support rod passes through the telescopic rod base, the telescopic adjustment rod and the height-adjustable support rod are vertically arranged, the first knurled flat head screw abuts against the telescopic adjustment rod, and the second knurled flat head screw abuts against the height-adjustable support rod.

[0005] In some embodiments, the hoop is formed by connecting two semi-hoops.

[0006] In some embodiments, the bottom of the support rod is fixedly connected to the support disk, the top of the support rod sequentially passes through the fixing ring and the hoop, the support rod and the fixing ring are connected by bolts, and the support rod and the hoop are connected by nuts.

[0007] In some embodiments, the number of the support rods is four and they are arranged at equal intervals.

[0008] In some embodiments, a plurality of mounting holes are provided on the support disk, and the height-adjustable support rod passes through any one of the mounting holes and is connected to the support disk by a nut.

[0009] In some embodiments, the metal ball is connected to one end of the telescopic adjusting rod through a conical connector.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: A calibration tool for a radiosurgical robot system provided by the present utility model has a simple structure, is easy to operate, and has high cost-effectiveness. It is used to improve the accuracy of the position of the treatment beam, realize the rapid calibration of the radiosurgical robot system in multiple dimensions, and ensure the accuracy of radiotherapy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. is a schematic structural diagram of a calibration tool for a radiosurgical robot system shown in the present utility model;

[0012] Figure 2 is Figure 1 a schematic structural diagram of the calibration tool shown in;

[0013] Figure 3 is Figure 2 a schematic diagram of a partial structure shown in. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present utility model will be described in detail below with reference to the embodiments shown in the drawings. However, it should be noted that these embodiments are not intended to limit the present utility model, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0015] As Figures 1-3 shown, a calibration tool for a radiosurgical robot system, the calibration tool 2 is installed on the accelerator 11 of the radiosurgical robot system 1, and is a calibration tool for a method for determining the position error of the treatment beam of a radiosurgical robot system with the publication number of CN 116115912A.

[0016] The calibration tooling 2 includes a hoop 21, a fixing ring 22, and a support disc 23 arranged in sequence from top to bottom, four support rods 24 connecting the hoop 21, the fixing ring 22, and the support disc 23, a height-adjustable support rod 25 connected to the support disc 23, a telescopic rod base 26, a telescopic adjustment rod 27 passing through the telescopic rod base 26, a metal ball 272 provided at one end of the telescopic adjustment rod 27, a first knurled flat head screw 281 and a second knurled flat head screw 282 screwed onto the telescopic rod base 26. The height-adjustable support rod 25 passes through the telescopic rod base 26, and the telescopic adjustment rod 27 and the height-adjustable support rod 25 are perpendicularly arranged.

[0017] The first knurled flat head screw 281 abuts against the telescopic adjustment rod 27 to fix the position of the telescopic adjustment rod 27. Rotating the first knurled flat head screw 281 to make it leave the telescopic adjustment rod 27 allows the telescopic adjustment rod 27 to move laterally in the telescopic rod base 26 to control the position of the metal ball 272, which is used to improve the accuracy of the treatment beam position, achieve rapid calibration of the radiosurgical robotic system in multiple dimensions, and ensure the accuracy of radiotherapy.

[0018] The second knurled flat head screw 282 abuts against the height-adjustable support rod 25 to fix the position of the telescopic rod base 26. Rotating the second knurled flat head screw 282 to make it leave the height-adjustable support rod 25 allows the telescopic rod base 26 to slide or rotate on the height-adjustable support rod 25 to adjust the height and angle, thereby adjusting the position of the metal ball 272, which is used to improve the accuracy of the treatment beam position, achieve rapid calibration of the radiosurgical robotic system in multiple dimensions, and ensure the accuracy of radiotherapy.

[0019] The metal ball 272 is connected to one end of the telescopic adjustment rod 27 through a conical connector 271. The laser beam emitted by the radiosurgical robotic system 1 hits the center of the metal ball 272 to determine the position of the metal ball 272, thereby deciding whether to adjust the position of the radiosurgical robotic system 1.

[0020] The number of the support rods 24 is four and they are evenly spaced. The hoop 21 is formed by connecting two semi-hoops. The hoop 21 is provided with ears 211, and the ears 211 are provided with mounting holes.

[0021] The bottom of the support rod 24 is fixedly connected to the support disk 23. The top of the support rod 24 sequentially passes through the fixing ring 22 and the hoop 21. The support rod 24 and the fixing ring 22 are connected by a bolt 242, and the support rod 24 and the hoop 21 are connected by a nut 241. The top of the support rod 24 has a thread. The top of the support rod 24 passes through the mounting hole of the ear part 211 and is then screwed onto the support rod 24 through the nut 241 to achieve the connection. A bolt 242 is screwed onto the fixing ring 22, and the bolt 242 abuts against the support rod 24 to achieve the connection.

[0022] A number of mounting holes 230 are provided on the support disk 23. The top of the height-adjustable support rod 25 is provided with a threaded section. The top of the height-adjustable support rod 25 passes through any one of the mounting holes 230 and is screwed onto the top of the height-adjustable support rod 25 through the nut 251 to achieve the connection between the support rod 25 and the support disk 23, and the position of the metal ball 272 can be flexibly adjusted.

[0023] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present invention, and they are not used to limit the protection scope of the present invention. Any equivalent implementation manners or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

[0024] In addition, it should be understood that although this specification is described according to the implementation manners, not every implementation manner only includes an independent technical solution. The narrative manner of this specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

Claims

1. A calibration tool for a radiosurgery robot system, characterized in that: It includes a clamp, a fixing ring, and a support plate arranged in sequence from top to bottom, a plurality of support rods connecting the clamp, the fixing ring, and the support plate, a height adjustment support rod connected to the support plate, a telescopic rod base, a telescopic adjustment rod passing through the telescopic rod base, a metal ball arranged at one end of the telescopic adjustment rod, and a first knurled flat head screw and a second knurled flat head screw screwed on the telescopic rod base; the height adjustment support rod passes through the telescopic rod base, the telescopic adjustment rod and the height adjustment support rod are arranged vertically, the first knurled flat head screw abuts the telescopic adjustment rod, and the second knurled flat head screw abuts the height adjustment support rod.

2. The calibration tool for a radiosurgery robot system according to claim 1, characterized in that: The clamp is formed by connecting two semicircular clamps.

3. The calibration tool for a radiosurgery robot system according to claim 2, characterized in that: The bottom of the support rod is fixedly connected to the support plate, the top of the support rod passes through the fixing ring and the clamp in sequence, the support rod and the fixing ring are connected by bolts, and the support rod and the clamp are connected by nuts.

4. The calibration tool for a radiosurgery robot system according to claim 3, characterized in that: The number of the support rods is four and they are evenly spaced.

5. The calibration tool for a radiosurgery robot system according to claim 1, characterized in that: The support plate is provided with a plurality of mounting holes, and the height adjustment support rod passes through any mounting hole and is connected to the support plate through a nut.

6. The calibration tool for a radiosurgery robot system according to claim 1, characterized in that: The metal ball is connected to one end of the telescopic adjustment rod through a conical connector.

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