Calibration device

Abstract

The utility model relates to a calibration device which comprises a calibration needle and a calibration die body, and a calibration ball is arranged at the end of the calibration needle. The calibration mold body comprises a base and a calibration piece arranged on the base, the calibration piece comprises a containing part, the size of the containing part is larger than that of the calibration ball, and the calibration ball has a first state arranged in the containing part and a second state arranged outside the containing part. By arranging the calibration ball and the calibration piece, the calibration ball and the calibration piece do not have sharp and sharp parts, the risk of puncturing a human body does not exist, and as long as the calibration ball can extend into the accommodating part of the calibration piece, it can be determined that the precision requirement is met, a worker can conveniently observe the calibration result, and the calibration efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of puncture technology, in particular to a calibration device. BACKGROUND

[0002] With the continuous deepening of the research on tumor detection and treatment, breast percutaneous puncture surgery has become an extremely important method for treating breast tumors. The accuracy of the puncture path is a key factor affecting the effectiveness of breast tumor surgery. Before use, the breast puncture unit needs to be corrected and positioned at the puncture position point using a calibration device. However, the calibration results of the existing calibration devices are not easy to judge, resulting in low calibration efficiency. CONTENT OF THE INVENTION

[0003] Therefore, it is necessary to provide a calibration device in view of the problem that the calibration results of the calibration device are not easy to judge, resulting in low calibration efficiency.

[0004] A calibration device, comprising:

[0005] a calibration needle, the end of which is provided with a calibration ball;

[0006] a calibration mold body, comprising a base and a calibration piece provided on the base, the calibration piece comprising a receiving portion, and the size of the receiving portion being greater than the size of the calibration ball, the calibration ball having a first state of being provided in the receiving portion, and a second state of being provided outside the receiving portion.

[0007] In one of the embodiments, the calibration mold body further comprises a mounting piece provided on the base, and the end of the mounting piece away from the base is provided with the calibration piece.

[0008] In one of the embodiments, the end of the mounting piece away from the base is provided with a cutting groove to form a cutting portion, the calibration piece is embedded in the cutting portion, the opening of the receiving portion is in communication with the outside, and the extension direction of the receiving portion is perpendicular to the cutting portion.

[0009] In one of the embodiments, the movement direction of the calibration needle is perpendicular to the cutting portion.

[0010] In one of the embodiments, the mounting piece comprises a plurality of mounting portions with different lengths, the plurality of mounting portions are provided on the same side wall of the base and are arranged at different positions, and each of the mounting portions is provided with one of the calibration pieces.

[0011] In one of the embodiments, the calibration piece comprises a detection portion made of a metal material, and the detection portion is provided with a through hole extending along the thickness direction of the detection portion to form the receiving portion.

[0012] In one of the embodiments, the detection part is arranged around the circumference of the accommodating part, and the detection part and the accommodating part are coaxial.

[0013] In one of the embodiments, the accommodating part is a cube structure, the side length of the accommodating part is A, the diameter of the calibration ball is B, and the calibration accuracy error is ±C, wherein: A=B+C×2, and the units of A, B and C are the same.

[0014] In one of the embodiments, a mark line is arranged at the connection between the calibration ball and the calibration needle, and the mark line is used to represent the arrangement position of the calibration ball in the accommodating part.

[0015] In one of the embodiments, a needle holder is further included, and the needle holder is connected to the calibration needle. When in the first state, the calibration needle is determined to meet the accuracy requirement, and when in the second state, the calibration needle is determined to not meet the accuracy requirement.

[0016] The calibration device, by arranging the calibration ball at the end of the calibration needle and arranging the calibration part on the base of the calibration model, the calibration part includes the accommodating part. After the calibration needle moves along the preset movement path, if the calibration ball extends into the accommodating part, at this time, the calibration ball is in the first state, it is determined that the calibration needle can move according to the preset path, and the accuracy of the calibration needle meets the requirement. If the calibration ball is outside the accommodating part, at this time, the calibration ball is in the second state, it is determined that the calibration needle cannot move according to the preset path, and the calibration needle cannot meet the accuracy requirement. The application sets the calibration ball and the calibration part, and the calibration ball and the calibration part do not have sharp and sharp parts, and there is no risk of injuring the human body. Moreover, as long as the calibration ball can extend into the accommodating part of the calibration part, it can be determined that the accuracy requirement is met, which is convenient for the staff to observe the calibration result and improves the calibration efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The first perspective view of the structure of the calibration device provided by the embodiment of the application is shown.

[0018] Figure 2 The structure of the calibration needle provided by the embodiment of the application is shown.

[0019] Figure 3 The first perspective view of the structure of the calibration model provided by the embodiment of the application is shown.

[0020] Figure 4 The second perspective view of the structure of the calibration model provided by the embodiment of the application is shown.

[0021] Figure 5 The cross-sectional view of the calibration device provided by the embodiment of the application is shown.

[0022] Figure 6In the ideal case, the projection of the calibration pin and the calibration piece in the Z direction is provided for the embodiments of the present application.

[0023] Figure 7 In the ideal case, the projection of the calibration pin and the calibration piece in the XY direction is provided for the embodiments of the present application.

[0024] Figure 8 In the non-ideal case, the projection of the calibration pin and the calibration piece in the XY direction is provided for the embodiments of the present application.

[0025] Figure 9 In the non-ideal case, the first projection of the calibration pin and the calibration piece in the Z direction is provided for the embodiments of the present application.

[0026] Figure 10 In the non-ideal case, the second projection of the calibration pin and the calibration piece in the Z direction is provided for the embodiments of the present application.

[0027] In the figure:

[0028] 100, calibration pin; 110, pin body; 120, calibration ball; 130, marking line;

[0029] 200, calibration model; 210, base; 220, calibration piece; 221, accommodating part; 222, detecting part; 230, mounting piece; 231, first mounting part; 232, second mounting part; 233, third mounting part; 240, cutting part. DETAILED DESCRIPTION

[0030] In order to make the above objectives, characteristics and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0032] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or implicating the number of indicated technical features. Thus, a feature defined with "first", "second" may include at least one of the features explicitly or implicitly. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0033] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0035] It should be noted that if an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0036] The breast puncture unit needs to be corrected and positioned at the puncture position point by using a calibration device before use. The existing calibration device includes a first calibration needle and a calibration mold body, the calibration mold body is provided with a second calibration needle, the first calibration needle is used to simulate the puncture needle of the puncture unit, the calibration mold body is used to simulate the human body, and the needle tip position of the second calibration needle is used to simulate the puncture position. When correction is needed, the first calibration needle moves along a preset path, if the needle tips of the first calibration needle and the second calibration needle coincide, it is judged that the first calibration needle meets the accuracy requirement, that is, the puncture unit meets the accuracy requirement, if they do not coincide, it is judged that the first calibration needle does not meet the accuracy requirement, that is, the puncture unit does not meet the accuracy requirement. However, the existing first calibration needle and second calibration needle have sharp and sharp parts, which have the risk of injuring the human body, and the coincidence position of the first calibration needle and the second calibration needle is not easy to judge because the needle tip is too small during use.

[0037] Therefore, the application provides a calibration device, as shown in Figures 1 to 10 The calibration device includes a calibration needle 100 and a calibration mold body 200, the end of the calibration needle 100 is provided with a calibration ball 120, the calibration mold body 200 includes a base 210 and a calibration piece 220 provided on the base 210, the calibration piece 220 includes a containing part 221, and the size of the containing part 221 is greater than the size of the calibration ball 120, the calibration ball 120 has a first state of being arranged in the containing part 221 and a second state of being arranged outside the containing part 221.

[0038] The calibration device, by arranging the calibration ball 120 at the end of the calibration needle 100, arranging the calibration piece 220 on the base 210 of the calibration mold body 200, and arranging the containing part 221 on the calibration piece 220, when the calibration needle 100 moves along the preset movement path, if the calibration ball 120 extends into the containing part 221, at this time the calibration ball 120 is in the first state, it is judged that the calibration needle 100 can move along the preset path, and the accuracy of the calibration needle 100 meets the requirement, if the calibration ball 120 is outside the containing part 221, at this time the calibration ball 120 is in the second state, it is judged that the calibration needle 100 cannot move along the preset path, and the calibration needle 100 cannot meet the accuracy requirement. The calibration ball 120 and the calibration piece 220 are arranged in the application, the calibration ball 120 and the calibration piece 220 do not have sharp and sharp parts, and there is no risk of injuring the human body, and as long as the calibration ball 120 can extend into the containing part 221 of the calibration piece 220, it can be determined that the accuracy requirement is met, which is convenient for the staff to observe the calibration result and improves the calibration efficiency.

[0039] It should be noted that the calibration needle 100 in the embodiment is used to simulate the puncture needle of the puncture unit, and the calibration ball 120 is arranged at the end of the calibration needle 100 to facilitate the indication of the position of the needle tip of the calibration needle 100. The calibration phantom 200 is used to simulate the human body, and the accommodation part 221 of the calibration member 220 on the calibration phantom 200 is used to simulate the puncture position.

[0040] It should be noted that the calibration device of the present application needs to adjust the setting position of the calibration phantom 200 before calibration, so as to realize subsequent calibration, for example, adjust the setting position of the calibration phantom 200 to leave space in the surrounding area to prevent other devices from affecting the movement of the calibration needle 100.

[0041] It should be noted that the calibration ball 120 arranged in the accommodation part 221 means that the calibration ball 120 is completely arranged in the accommodation part 221, and the second state of the calibration ball 120 arranged outside the accommodation part 221 includes two cases, one is that the calibration ball 120 is completely arranged outside the accommodation part 221, and the other is that the calibration ball 120 is partially arranged in the accommodation part 221 and partially arranged outside the accommodation part 221.

[0042] Specifically, as shown in Figure 2 , the calibration needle 100 comprises a needle body 110 and a calibration ball 120 arranged at one end of the needle body 110.

[0043] Specifically, the calibration device further comprises a needle holder connected to the calibration needle 100, when in the first state, the calibration needle 100 is judged to meet the accuracy requirement, and when in the second state, the calibration needle 100 is judged to not meet the accuracy requirement. By arranging the needle holder, the needle holder is connected to the needle body 110 of the calibration needle 100, the calibration needle 100 is driven to move along the preset path by the needle holder, so as to judge the calibration.

[0044] More specifically, as shown in Figure 1 and Figure 5 , the needle holder drives the calibration needle 100 to move in the first direction, wherein the first direction is perpendicular to the opening of the accommodation part 221, so that the calibration needle 100 can be vertically inserted into the accommodation part 221. By driving the calibration needle 100 to move in the first direction by the needle holder, the preset movement path of the calibration needle 100 is a path extending in the first direction.

[0045] Specifically, as shown in Figures 3 to 5 , the calibration phantom 200 further comprises a mounting member 230 arranged on the base 210, and the mounting member 230 is provided with the calibration member 220 at one end away from the base 210. By arranging the mounting member 230, the calibration member 220 is arranged on the mounting member 230, the mounting member 230 is connected to the base 210, and the connection between the calibration member 220 and the base 210 is realized by the mounting member 230.

[0046] More specifically, as shown in Figures 3 to 5 the base 210 is a cuboid structure, and the mounting member 230 is vertically connected to one side wall of the base 210.

[0047] In particular, as shown in Figures 3 to 5 the end of the mounting member 230 away from the base 210 is provided with a cutout to form a cutout portion 240, the calibration member 220 is embedded in the cutout portion 240, and the opening of the accommodating portion 221 is in communication with the outside world, and the extension direction of the accommodating portion 221 is perpendicular to the cutout portion 240. By providing a cutout at the end of the mounting member 230 away from the base 210, a cutout portion 240 for mounting the calibration member 220 is formed, the calibration member 220 is embedded in the cutout portion 240, and the extension direction of the accommodating portion 221 is perpendicular to the cutout portion 240. When the calibration needle 100 moves in the first direction, whether the calibration ball 120 is disposed in the accommodating portion 221 can be observed.

[0048] It should be noted that the extension direction of the accommodating portion 221 is perpendicular to the cutout portion 240, i.e. the extension direction of the accommodating portion 221 is perpendicular to the cutting surface of the cutout portion 240.

[0049] In this embodiment, as shown in Figures 3 to 5 the mounting member 230 is a round rod, and a cutout is provided at the end of the mounting member 230 to form a cutout portion 240. In other embodiments, the mounting member 230 can be of any shape as long as a cutout can be provided to facilitate the installation of the calibration member 220.

[0050] More specifically, as shown in Figures 3 to 5 the cutout extends along the length direction of the mounting member 230.

[0051] More specifically, in order to facilitate the calculation of the movement coordinates of the calibration ball 120, as shown in Figures 3 to 5 the movement direction of the calibration needle 100 is perpendicular to the cutout portion 240. The needle holder can move the calibration needle 100 in the first direction, i.e. the movement direction of the calibration needle 100 is the first direction. By limiting the positional relationship between the first direction and the cutout portion 240, the relative positional relationship between the preset movement path of the calibration needle 100 and the calibration member 220 is also limited, i.e. when the calibration needle 100 moves in the first direction, if the accuracy of the calibration needle 100 meets the requirements, the calibration needle 100 can extend into the accommodating portion 221 in the first direction, and if the accuracy of the calibration needle 100 does not meet the requirements, the calibration needle 100 can be disposed outside the accommodating portion 221 when moving in the first direction. The worker can judge the calibration result by observing the setting position of the calibration ball 120, thereby improving the judgment efficiency.

[0052] It should be noted that the two position relationships of the calibration ball 120 completely arranged outside the accommodating portion 221 include one that the calibration ball 120 abuts against the cutting portion 240 or the outer wall of the calibration member 220, and the other that the calibration ball 120 passes through the accommodating portion 221 and is arranged on one side of the cutting portion 240, that is, under the perspective view of Figure 3 the calibration ball 120 is arranged below the cutting portion 240 or the accommodating portion 221.

[0053] Further, in the field, a geometric correction phantom is a high-precision phantom, the three-dimensional space coordinates of the marked points on the phantom are known, under a specific imaging geometry, the projection coordinates of the phantom marked points are obtained by perspective imaging on the detector panel, and the mapping relationship of the imaging geometry is obtained by a linear transformation method; the geometric correction phantom is used to calibrate the deviation between the actual imaging system geometry and the ideal imaging system geometry, and the calibrated imaging system geometry is applied to the registration or reconstruction algorithm to correct the perspective mapping of the registration or reconstruction algorithm.

[0054] Therefore, in order to obtain the three-dimensional space coordinates of the calibration ball 120 after moving along the preset motion path, that is, the three-dimensional space coordinates of the calibration ball 120 after moving along the first direction, as Figures 3 to 5 shown, the mounting member 230 includes a plurality of mounting portions with different lengths, the plurality of mounting portions are arranged on the same side wall of the base 210 and are arranged at different positions, and each mounting portion is configured with one calibration member 220. By arranging a plurality of mounting portions, each mounting portion is arranged with one calibration member 220, and the plurality of mounting portions are arranged on the same side wall of the base 210, then the XY plane of the side wall member, the plurality of mounting portions are arranged at different positions, that is, the XY coordinates of the plurality of mounting portions are different, then the XY coordinates of the calibration member 220 arranged at the end of the mounting portion are different, and the lengths of the plurality of mounting portions are also different, then the Z coordinates of the calibration member 220 arranged at the end of the mounting portion are also different, that is, the X, Y and Z coordinates of the plurality of mounting portions are different, and the X, Y and Z of the plurality of calibration members 220 are different. When the calibration ball 120 is arranged in the accommodating portion 221 of the corresponding calibration member 220, the three-dimensional space coordinates of the calibration ball 120 can be obtained by conversion.

[0055] Specifically, in the embodiment, as Figures 3 to 5 shown, the present application is provided with three mounting portions, and the lengths of the mounting portions are in the order of the first mounting portion 231, the second mounting portion 232 and the third mounting portion 233 from short to long.

[0056] More specifically, as Figures 3 to 5As shown, the three mounting portions are arranged in sequence along a second direction according to length, wherein the second direction is a diagonal line of the side wall. The first mounting portion 231, the second mounting portion 232 and the third mounting portion 233 are arranged on the side wall of the base 210 according to the second direction, and since the second direction is a diagonal line of the side wall, that is, the XY coordinates of the first mounting portion 231, the second mounting portion 232 and the third mounting portion 233 in the second direction are all different.

[0057] In other embodiments, the number of mounting portions is set according to actual operation needs, for example, four, five or even more can be set, and the arrangement direction of the plurality of mounting portions can also be set according to actual operation needs, as long as the X, Y and Z coordinates of the plurality of mounting portions are all different.

[0058] Further, as shown, Figures 3 to 5 The calibration piece 220 includes a detection portion 222 made of a metal material, and the detection portion 222 is provided with a through hole extending in the thickness direction of the detection portion 222 to form an accommodation portion 221. By providing the through hole on the detection portion 222, the accommodation portion 221 is formed. If the accuracy of the calibration needle 100 meets the requirements, the calibration needle 100 can extend into the accommodation portion 221 along the first direction. If the accuracy of the calibration needle 100 does not meet the requirements, the calibration ball 120 can abut against the detection portion 222 or the cutting portion 240, that is, in the perspective view, the calibration ball 120 is arranged above the accommodation portion 221, or the calibration needle 100 can pass through the accommodation portion 221 and be arranged on one side of the cutting portion 240, that is, in the perspective view, the calibration ball 120 is arranged below the accommodation portion 221, or the calibration ball 120 partially extends into the accommodation portion 221 and partially is arranged outside the accommodation portion 221. Figure 3 Figure 3

[0059] It should be noted that the extension direction of the accommodation portion 221 is the extension direction of the through hole. The accommodation portion 221 has two openings, and the two ends of the through hole form corresponding openings.

[0060] Specifically, as shown, Figures 3 to 5 The detection portion 222 is arranged around the circumference of the accommodation portion 221, and the detection portion 222 and the accommodation portion 221 are coaxial. By arranging the detection portion 222 around the circumference of the accommodation portion 221, the detection portion 222 and the accommodation portion 221 are coaxial, and when the accuracy of the calibration needle 100 does not meet the requirements, the calibration ball 120 can abut against the detection portion 222, thereby facilitating the worker to judge the deviation between the actual accuracy of the calibration ball 120 and the preset accuracy.

[0061] ​​Specifically, the detection part 222 is made of metal material. By using metal material, the relative position between the calibration ball 120 and the accommodating part 221 can be captured by X-ray exposure, and the accuracy error of the calibration needle 100 can be determined by the specific position of the calibration ball 120 in the accommodating part 221.

[0062] More specifically, as shown in Figures 6 to 10 , a mark line 130 is arranged at the connection between the calibration ball 120 and the calibration needle 100, and the mark line 130 is used to represent the setting position of the calibration ball 120 in the accommodating part 221. By arranging the mark line 130 on the calibration ball 120, when the calibration ball 120 is inserted into the accommodating part 221, it is convenient to compare the relative position between the calibration ball 120 and the accommodating part 221.

[0063] More specifically, the accommodating part 221 is a cube structure, the side length of the accommodating part 221 is A, the diameter of the calibration ball 120 is B, and the calibration accuracy error is ±C, wherein: A=B+C×2, and the units of A, B and C are the same. By limiting the quantity relationship between the size of the accommodating part 221, the diameter of the calibration ball 120 and the calibration accuracy requirement, the accuracy error of the calibration needle 100 can be calculated.

[0064] For example, the detection part 222 of the present application is a cylinder, and a through hole in the form of a cube structure is arranged on the cylinder to form the accommodating part 221. According to the actual operation requirement, the calibration accuracy error of the calibration ball 120 in each direction is within ±1mm, that is, C is 1mm, the diameter of the detection ball is 1mm, that is, B is 1mm, and the side length of the accommodating part 221 is 3mm, that is, A is 1mm.

[0065] The calibration ball 120 arranged in the accommodating part 221 has the following situations:

[0066] 1) Ideal case:

[0067] The projection of the relative position between the calibration needle 100 and the calibration model 200 in the Z direction and the XY direction is shown in Figure 6 and Figure 7 , the calibration ball 120 is at the center of the accommodating part 221, and the positioning error of the calibration ball 120 in X, Y and Z directions is 0, wherein X direction and Y direction refer to the length direction and width direction of the base 210, and Z direction refers to the length direction of the mounting part 230.

[0068] 2) Non-ideal case:

[0069] XY direction: as shown in Figure 8 , the calibration ball 120 is in contact with the left side wall of the accommodating part 221 (the left side wall shown in Figure 8 ), it is judged that the accuracy error of the calibration needle 100 is +1mm;

[0070] When the calibration ball 120 is in contact with the right side wall of the accommodating portion 221 (the right side wall is shown in FIG. 6), it is determined that the precision error of the calibration needle 100 is -1 mm. Figure 8

[0071] When the calibration ball 120 is between the left and right limit positions, that is, as long as the small ball enters the accommodating portion 221, it is determined that the precision deviation is not greater than ±1 mm, which meets the precision requirement.

[0072] Z direction: as shown in FIG. 6 and FIG. 7, when the mark line 130 on the calibration ball 120 is flush with the upper surface of the accommodating portion 221 (that is, the upper surface of the accommodating groove is shown in FIG. 6), it is determined that the precision error of the calibration needle 100 is -1 mm. Figure 9 Figure 10 Figure 9

[0073] When the lowest point of the calibration ball 120 is flush with the lower surface of the accommodating portion 221 (that is, the lower surface of the accommodating groove is shown in FIG. 7), and at this time the calibration ball 120 does not exceed the lower surface of the accommodating portion 221, it is determined that the precision error of the calibration needle 100 is +1 mm. Figure 9

[0074] When the calibration ball 120 is between the upper and lower limit positions, the precision deviation of the calibration ball 120 in the Z direction is within ±1 mm, which meets the precision requirement.

[0075] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.

[0076] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.​​​​​

Claims

1. A calibration device, characterized in that, The calibration device includes: A calibration needle (100) has a calibration ball (120) at its end; The calibration phantom (200) includes a base (210) and a calibration element (220) disposed on the base (210). The calibration element (220) includes a receiving portion (221), and the size of the receiving portion (221) is larger than the size of the calibration ball (120). The calibration ball (120) has a first state disposed within the receiving portion (221) and a second state disposed outside the receiving portion (221).

2. The calibration device according to claim 1, characterized in that, The calibration module (200) further includes a mounting component (230) disposed on the base (210), and the calibration component (220) is disposed at one end of the mounting component (230) away from the base (210).

3. The calibration device according to claim 2, characterized in that, The mounting member (230) has a groove at one end away from the base (210) to form a cutting part (240). The calibration member (220) is embedded in the cutting part (240), and the opening of the receiving part (221) communicates with the outside. The extending direction of the receiving part (221) is perpendicular to the cutting part (240).

4. The calibration device according to claim 3, characterized in that, The direction of movement of the calibration needle (100) is perpendicular to the cutting part (240).

5. The calibration device according to claim 2, characterized in that, The mounting component (230) includes multiple mounting parts of different lengths. The multiple mounting parts are all disposed on the same side wall of the base (210) and are disposed in different positions. Each mounting part is configured with a calibration component (220).

6. The calibration apparatus according to claim 1, characterized in that, The calibration element (220) includes a detection part (222) made of metal material, the detection part (222) having a through hole extending along the thickness direction of the detection part (222) to form the receiving part (221).

7. The calibration apparatus according to claim 6, characterized in that, The detection unit (222) is arranged circumferentially around the receiving part (221), and the detection unit (222) and the receiving part (221) are coaxial.

8. The calibration apparatus according to claim 1, characterized in that, The receiving part (221) is a cube structure, the side length of the receiving part (221) is A, the diameter of the calibration ball (120) is B, and the calibration accuracy error is ±C, where: A=B+C×2, and the units of A, B and C are the same.

9. The calibration apparatus according to claim 1, characterized in that, A marking line (130) is provided at the connection between the calibration ball (120) and the calibration needle (100), and the marking line (130) is used to characterize the setting position of the calibration ball (120) in the receiving part (221).

10. The calibration apparatus according to any one of claims 1-9, characterized in that, It also includes a needle holder connected to the calibration needle (100). When in the first state, the calibration needle (100) is determined to meet the accuracy requirements. When in the second state, the calibration needle (100) is determined to not meet the accuracy requirements.

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