Osteotomy guiding device

Abstract

The invention relates to an osteotomy guide device which comprises a first guide plate, a second guide plate and a guide column. When the osteotomy guiding device is used, firstly, the first guide plate and the second guide plate are tightly attached and fixed to the surface of bone tissue at the osteotomy position, after osteotomy, the bone tissue on one side rotates around the connecting position of the bone tissue on the two sides for correction, and therefore the second guide plate is driven to be away from the first guide plate, and the limiting boss is driven to be close to the checking part; the first guide plate and the second guide plate cannot move oppositely in the opposite directions until the verification part is completely matched with the limiting boss, and the included angle between bone tissues on the two sides of the osteotomy position is fixed and reaches the preset correction angle. The bone tissues on the two sides are more stable and do not shake in the expanding process, and the correction process is stable. The cooperation of the limiting boss and the verification part can provide obvious tactile or visual prompts for the operator, and the correction precision is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of osteotomy auxiliary medical equipment, and in particular to an osteotomy guiding device. Background Art

[0002] The main process of traditional osteotomy surgery is to conduct a medical imaging scan of the patient's target bone tissue before the operation, and then plan and measure based on the medical image. During the operation, the surgeon first visually performs preliminary positioning, and then repeatedly measures and adjusts through fluoroscopy and other means and measuring tools to determine the final osteotomy position. Then the osteotomy operation is performed to determine the cutting depth of the osteotomy knife and complete the osteotomy. Then, the osteotomy area is expanded with a spreader, and the expansion depth is repeatedly adjusted with the help of fluoroscopy or measuring tools so that the bone tissue on both sides of the opening reaches the predetermined correction angle. Finally, the corrected bone tissue is fixed with a fixation plate. However, this method relies more on the doctor's clinical practice experience, the osteotomy accuracy and correction accuracy are low, and it cannot be customized for patients. At the same time, multiple fluoroscopic adjustments are required during the operation to determine the position and surgical opening during the osteotomy process, which increases the risk of X-ray exposure for patients and doctors, resulting in longer operation times.

[0003] The osteotomy guide in the prior art can solve the problems of low precision and long operation time of traditional osteotomy, but the correction angle calibration is inconvenient and the correction accuracy is not high. Summary of the invention

[0004] Based on this, it is necessary to provide an osteotomy guiding device, which can solve the problems of low precision and long operation time of traditional osteotomy, but does not have a verification structure to set a predetermined value for the correction angle, which will affect the accuracy of the correction angle, prolong the operation time, and reduce the health problems of doctors and patients.

[0005] An osteotomy guide device, comprising:

[0006] A first guide plate, wherein the first guide plate is provided with a guide hole;

[0007] a second guide plate; and

[0008] A guide column, the guide column includes a column body and a limiting boss, one end of the column body is connected to the second guide plate, the column body is passed through the guide hole and matched with the guide hole, and the limiting boss is arranged at an end of the column body away from the second guide plate; a verification part is provided at the guide hole on the side of the first guide plate away from the second guide plate, and the verification part is used to match with the limiting boss to verify the correction angle after osteotomy.

[0009] In one embodiment, a side of the column close to the limiting boss is a bent rod, and an end of the column close to the second guide plate is arranged at an angle to the axis of the limiting boss.

[0010] In one embodiment, the cross section of the column is circular, elliptical or polygonal.

[0011] In one embodiment, the cross-section of the limiting boss is circular, elliptical or polygonal.

[0012] In one embodiment, a clamping structure is provided on a side of the first guide plate facing away from the second guide plate, and a matching structure is provided on the limiting boss, and the clamping structure and the matching structure are clamped and matched.

[0013] In one embodiment, one of the snap-fit ​​structure and the matching structure is a snap-fit ​​groove or a snap-fit ​​protrusion, and the other is a snap buckle.

[0014] In one embodiment, the matching structure is arranged on the circumference of the limiting boss, the clamping structure is protrudingly arranged on a side of the first guide plate away from the second guide plate, or the clamping structure is arranged on the checking part.

[0015] In one embodiment, the limiting boss is spherical, prism-shaped or frustum-shaped, and the inner wall of the verification part is adapted to the limiting boss.

[0016] In one embodiment, the osteotomy guide device further includes a plurality of connecting columns, one end of each connecting column is connected to the first guide plate, and the other end of each connecting column is connected to the second guide plate.

[0017] In one embodiment, the first guide plate and the second guide plate extend in a direction away from the bone tissue and are respectively formed with a first protrusion and a second protrusion, one end of the column is connected to the first protrusion, and the verification part is arranged on the second protrusion.

[0018] When the above-mentioned osteotomy guide device is in use, the first guide plate and the second guide plate are first pressed against and fixed to the bone tissue surface at the osteotomy site, at this time, the limiting boss is away from the verification part, and the end of the column connected to the second guide plate is close to the verification part. After the bone tissue is partially cut by the osteotomy tool, the bone tissue on one side after the osteotomy is rotated and corrected around the connection between the bone tissues on both sides, thereby driving the second guide plate to move away from the first guide plate. At this time, the column moves relative to the guide hole in the guide hole, and the limiting boss is close to the verification part until the verification part and the limiting boss are fully adapted, and then the first guide plate and the second guide plate cannot move relative to each other in opposite directions, and the angle between the bone tissues on both sides of the osteotomy site is fixed to reach a preset correction angle, that is, the angle required for rotation during the osteotomy, and then the subsequent process of the osteotomy is carried out. Due to the cooperation between the limiting boss and the verification part, the bone tissues on both sides are more stable and will not shake during the process of spreading the bone tissues, the correction process is stable, and it is convenient to carry out the subsequent process, thereby shortening the entire surgical process. The cooperation between the limiting boss and the calibration part can also provide the operator with obvious tactile or visual prompts, so that the angle of the bone tissue after the osteotomy is completed is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A top view of an osteotomy guide device according to an embodiment.

[0020] Figure 2 for Figure 1 Right view of .

[0021] Figure 3 for Figure 1 Left view of .

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the osteotomy guide device from another perspective.

[0023] Figure 5 It is a schematic structural diagram of the cooperation between the limiting boss and the verification part in one embodiment.

[0024] Figure 6 for Figure 1 An enlarged view of the guide pin in FIG.

[0025] Figure 7 This is an enlarged view of the verification portion of an osteotomy guide device according to one embodiment.

[0026] Figure 8 It is an enlarged view of the cooperation between the limiting boss and the verification part of another embodiment.

[0027] Fig. 9 It is an enlarged view of the cooperation between the matching structure and the clamping structure of another embodiment.

[0028] Fig.10 for Fig. 9 An enlarged view of the limiting boss.

[0029] Fig.11 It is an enlarged view of the guide post of another embodiment.

[0030] Description of Figure Numbers:

[0031] 100-Osteotomy guide device;

[0032] 110 - first guide plate; 111 - first protrusion; 112 - guide hole; 113 - depth indicator mark; 114 - protection groove;

[0033] 120-second guide plate; 121-second protruding portion; 122-calibration portion; 123-arc indication mark; 124-positioning groove; 125-positioning groove;

[0034] 130-guide column; 131-column; 132-limiting boss;

[0035] 140-clip structure; 141-clip;

[0036] 150-matching structure; 151-clamping protrusion;

[0037] 160-connecting column;

[0038] 170-pressing block; 171-anti-slip protrusion;

[0039] 200-Bone tissue. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0042] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0046] See also Figure 1-Figure 3 An osteotomy guide device 100 provided in one embodiment of the present application includes: a first guide plate 110 , a second guide plate 120 and a guide column 130 .

[0047] The first guide plate 110 is provided with a guide hole 112, and the guide column 130 includes a column 131 and a limiting boss 132. One end of the column 131 is connected to the second guide plate 120. The column 131 is inserted into and matched with the guide hole 112, and the limiting boss 132 is arranged at one end of the column 131 away from the second guide plate 120. A verification part 122 is provided at the guide hole 112 on the side of the first guide plate 110 away from the second guide plate 120. The verification part 122 is used to match with the limiting boss 132 to verify the correction angle after osteotomy.

[0048] When the osteotomy guide device 100 is used, the first guide plate 110 and the second guide plate 120 are firstly pressed against and fixed to the surface of the bone tissue 200 where the osteotomy is to be performed, that is, the surface of the bone tissue 200 at the osteotomy site. At this time, the limiting boss 132 is away from the verification part 122, and the end of the column 131 connected to the second guide plate 120 is close to the verification part 122. After the bone tissue 200 is partially cut by the osteotomy tool, the bone tissue 200 on one side of the osteotomy site is rotated and corrected around the connection between the bone tissues 200 on both sides, thereby driving the second guide plate 120 away from the first guide plate 110. At this time, the column 131 is in the guide hole 112 relative to the guide hole 112. 12 moves, the limiting boss 132 approaches the verification part 122, until the verification part 122 is fully adapted to the limiting boss 132, and then the first guide plate 110 and the second guide plate 120 cannot move relative to each other in opposite directions, and the angle between the bone tissues 200 on both sides of the osteotomy can be fixed to reach the preset correction angle, that is, the angle required for the osteotomy, and then the subsequent process of the osteotomy is carried out. Due to the cooperation between the limiting boss 132 and the verification part 122, the bone tissues 200 on both sides are more stable and will not shake during the expansion process, the correction process is stable, and the subsequent process is convenient, thereby shortening the entire surgical process. The cooperation between the limiting boss 132 and the verification part 122 can also provide the operator with obvious tactile or visual prompts, and the angle of the bone tissues 200 is more accurate after the osteotomy is completed.

[0049] Specifically, the limiting boss 132 cannot pass through or enter the guide hole 112 .

[0050] Specifically, the osteotomy guide device 100 further includes a plurality of fasteners, and the first guide plate 110 and the second guide plate 120 are provided with fixing holes. The fasteners are inserted into the fixing holes and connected and fixed to the bone tissue 200, or connected to a surgical fixing structure provided on the side of the bone tissue 200 away from the osteotomy guide device 100, so as to fix the first guide plate 110 and the second guide plate 120 relative to the bone tissue 200.

[0051] In one embodiment, one end of the limiting boss 132 close to the guide hole 112 directly abuts against the opening of the guide hole 112 in a stable manner, that is, the abutting surface of the limiting boss 132 forms the calibration portion 122 to ensure a stable and accurate correction angle.

[0052] In addition, a protrusion is provided on the first guide plate 110, and the column 131 is passed through the protrusion. The limiting boss 132 abuts against the side of the protrusion away from the second guide plate 120, so that the protrusion forms a verification part 122, which is convenient for observation during correction and verification, and at the same time, the accuracy of the protrusion is easier to ensure when the guide plate is processed.

[0053] In another embodiment, a positioning groove 125 is provided on the first guide plate 110, and the positioning groove 125 is connected to the guide hole 112 and matched with the limiting boss 132 to form the verification part 122. The column 131 moves in the guide hole 112 until the limiting boss 132 enters the positioning groove 125. Since the limiting boss 132 cannot pass through or enter the guide hole 112, after the limiting boss 132 abuts and matches with the positioning groove 125, the rotation correction of the bone tissue 200 is completed and the angle is fixed.

[0054] Preferably, after the limiting boss 132 enters the positioning groove 125, the side of the limiting boss 132 away from the second guide plate 120 is flush with the plane at the opening of the positioning groove 125, so that the limiting of the rotation of the bone tissue 200 is more intuitive, and the operator can know whether the rotation of the bone tissue 200 is completed just by touch.

[0055] Among them, the osteotomy process refers to the existing technology. The osteotomy point of the bone tissue 200 needs to cut a partial cross-section of the bone tissue 200 to connect part of the bone tissue 200 and separate the other parts of the bone tissue 200. The bone tissues 200 on both sides of the separation are rotated around the connection point for correction and move away from each other so that the angle of the bone tissues 200 on both sides is increased. The osteotomy guide device 100 of the present application is customized according to the angle of the bone tissue 200 that needs to be corrected for different patients, and the main customized structure includes a column 131, a first guide plate 110 and a second guide plate 120.

[0056] Preferably, the guide hole 112 abuts against and slidably fits against the inner wall of the column 131 , thereby preventing the column 131 from shaking in the guide hole 112 and causing damage to the connection with the bone tissue 200 .

[0057] Preferably, at least one pressing block 170 is provided at one end of the first guide plate 110 away from the second guide plate 120, and an anti-slip protrusion 171 is provided on the side of the pressing block 170 away from the bone tissue 200, so as to facilitate the operator to grasp the first guide plate 110 without contacting the first guide plate 110 and the side of the second guide plate 120 close to the bone tissue 200.

[0058] See also Figure 1In one embodiment, the first guide plate 110 is recessed on one side of the bone tissue 200 away from the bone tissue 200 so that the first guide plate 110 is attached to and fixed to the surface of the bone tissue 200 on the upper side of the osteotomy, and the second guide plate 120 is attached to and fixed to the surface of the bone tissue 200 on the lower side of the osteotomy.

[0059] See also Figure 2 In one embodiment, a depth indicator mark 113 is provided on the side of the first guide plate 110 facing away from the bone tissue 200. The depth indicator mark 113 is used to indicate the osteotomy depth of the osteotomy, thereby prompting the operator of the osteotomy cutting depth.

[0060] See also Figure 3 In one embodiment, a protective groove 114 is formed on the side of the first guide plate 110 facing the bone tissue 200 to protect soft tissue and blood vessels.

[0061] See also Figure 3 In one embodiment, a positioning groove 124 is formed on the side of the first guide plate 110 facing the bone tissue 200 , and the positioning groove 124 is adapted to the bone tissue 200 to position and fix the first guide plate 110 and the bone tissue 200 .

[0062] See also Figure 4 In one embodiment, the side of the column 131 close to the limiting boss 132 is a bent rod, and the end of the column 131 close to the second guide plate 120 is set at an angle with the axis of the limiting boss 132, wherein the angle between the end of the column 131 close to the second guide plate 120 and the axis of the limiting boss 132 is a complementary angle to the angle of osteotomy rotation correction.

[0063] See also Figure 5-Figure 8 as well as Fig.11 In one embodiment, the cross-section of the column 131 is circular, elliptical or polygonal, and the guide hole 112 is adapted to the column 131 .

[0064] See also Figure 5-Figure 8 In one embodiment, the cross section of the limiting boss 132 is circular, elliptical or polygonal.

[0065] See also Figure 9-10 In one embodiment, a clamping structure 140 is provided on the side of the first guide plate 110 facing away from the second guide plate 120, and a matching structure 150 is provided on the limiting boss 132. The clamping structure 140 and the matching structure 150 are clamped together. When the first guide plate 110 moves to a predetermined position relative to the second guide plate 120, the clamping cooperation realizes the position locking of the limiting boss 132 of the column 131 and the first guide plate 110, so that the positions of the first guide plate 110 and the second guide plate 120 are relatively fixed after the correction rotation is completed, thereby ensuring the accuracy of the correction angle.

[0066] See also Figure 9-10 In one embodiment, a matching structure 150 is provided on the circumference of the limiting boss 132 , and the clamping structure 140 is protruded and provided on a side of the first guide plate 110 away from the second guide plate 120 .

[0067] In another embodiment, a matching structure 150 is disposed on the circumference of the limiting boss 132 , and the clamping structure 140 is disposed on the checking portion 122 .

[0068] In one embodiment, the snap-fit ​​structure 140 is a snap slot, and the matching structure 150 is a snap buckle 141 .

[0069] In another embodiment, the snap-fit ​​structure 140 is a buckle 141 , and the matching structure 150 is a slot.

[0070] Furthermore, the snap-fitting structure 140 can also be a locking bead, and the matching structure 150 can be a slot; or the matching structure 150 can be a locking bead, and the snap-fitting structure 140 can be a slot. The specific snap-fitting method can also be other structural forms, as long as the limiting boss 132 and the verification part 122 can be elastically snap-fitted, and the relative positions of the first guide plate and the second guide plate can be fixed after the snap-fitting. This will not be elaborated.

[0071] Specifically, there are multiple pairs of mating structures 150, and the two mating structures 150 in each pair of mating structures 150 are respectively located on both sides of the axial direction of the limiting boss 132 to ensure that the abutting force of the two mating structures 150 in each pair of mating structures 150 on the limiting boss 132 is symmetrical, so that the limiting boss 132 is relatively stable during the clamping process and the limiting boss 132 is prevented from being offset.

[0072] See also Figure 5-Figure 8 In one embodiment, the limiting boss 132 is spherical, prism-shaped or frustum-shaped, and the inner wall of the verification part 122 is adapted to the limiting boss 132, so that the limiting boss 132 completes the corrective rotation of the bone tissue 200 after abutting against the inner wall of the verification part 122, making it convenient to determine the rotation angle.

[0073] Specifically, the limiting boss 132 is spherical, the side wall of the positioning groove 125 is arc-shaped, and the inner diameter of the positioning groove 125 gradually expands from the side close to the second guide plate 120 to the side away from the second guide plate 120 so that the positioning groove 125 is adapted to the limiting boss 132 .

[0074] See also Figure 2-3In one embodiment, the osteotomy guide device 100 further includes a plurality of connecting posts 160, one end of the connecting post 160 being connected to the first guide plate 110, and the other end being connected to the second guide plate 120. When the first guide plate 110 and the second guide plate 120 are fixed to the bone tissue 200, it is convenient to control the position between the first guide plate 110 and the second guide plate 120, and to leave a gap for the osteotomy. During osteotomy, the osteotomy knife is directly brought into contact with the connecting post 160, and the connecting post 160 is cut off before continuing to cut the bone tissue 200.

[0075] See also Figure 1-4 In one embodiment, the first guide plate 110 and the second guide plate 120 extend in a direction away from the bone tissue and are respectively formed with a first protrusion 111 and a second protrusion 121, one end of the column 131 is connected to the first protrusion 111, the verification portion 122 is arranged on the second protrusion 121, and the guide hole 112 is arranged on the second protrusion 121, so that the guide column 130 and the guide hole 112 are protruded and arranged on the side of the first guide plate 110 and the second guide plate 120 away from the bone tissue 200, so that the cooperation between the column 131 and the guide hole 112, and the cooperation between the limiting boss 132 and the verification portion 122 are smoother.

[0076] Preferably, the first protrusion 111 is disposed on the left side or the right side of the bone tissue 200 , so as to prevent the guide post 130 from obstructing the osteotomy between the first guide plate 110 and the second guide plate 120 .

[0077] Preferably, a curvature indicator mark 123 is provided on the side of the second guide plate 120 away from the bone tissue 200, and the curvature indicator mark 123 is used to indicate the curvature of the column 131, thereby indicating the correction angle. The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An osteotomy guide device (100), characterized in that: The osteotomy guide device (100) comprises: A first guide plate (110), wherein the first guide plate (110) is provided with a guide hole (112); a second guide plate (120); and A guide column (130), the guide column (130) includes a column body (131) and a limiting boss (132), one end of the column body (131) is connected to the second guide plate (120), the column body (131) is passed through the guide hole (112) and matched with the guide hole (112), the limiting boss (132) is arranged at one end of the column body (131) away from the second guide plate (120); a verification part (122) is provided at the guide hole (112) on the side of the first guide plate (110) away from the second guide plate (120), and the verification part (122) is used to match with the limiting boss (132) to verify the correction angle after osteotomy.

2. The osteotomy guide device (100) according to claim 1, characterized in that: A side of the column (131) close to the limiting boss (132) is a bent rod, and an end of the column (131) close to the second guide plate (120) is arranged at an angle with the axis of the limiting boss (132).

3. The osteotomy guide device (100) according to claim 1, characterized in that: The cross section of the column (131) is circular, elliptical or polygonal.

4. The osteotomy guide device (100) according to claim 1, characterized in that: The cross section of the limiting boss (132) is circular, elliptical or polygonal.

5. The osteotomy guide device (100) according to claim 1, characterized in that: A clamping structure (140) is provided on the side of the first guide plate (110) facing away from the second guide plate (120), and a matching structure (150) is provided on the limiting boss (132), and the clamping structure (140) and the matching structure (150) are clamped and matched.

6. The osteotomy guide device (100) according to claim 5, characterized in that: One of the clamping structure (140) and the matching structure (150) is a clamping groove or a clamping protrusion (151), and the other is a buckle (141).

7. The osteotomy guide device (100) according to claim 5, characterized in that: The matching structure (150) is arranged on the circumference of the limiting boss (132), and the snap-fit ​​structure (140) is protrudingly arranged on a side of the first guide plate (110) away from the second guide plate (120), or the snap-fit ​​structure (140) is arranged on the verification part (122).

8. The osteotomy guide device (100) according to claim 1, characterized in that: The limiting boss (132) is spherical, prism-shaped or truncated, and the inner wall of the verification part (122) is adapted to the limiting boss (132).

9. The osteotomy guide device (100) according to claim 1, characterized in that: The osteotomy guiding device (100) further comprises a plurality of connecting columns (160), one end of each connecting column (160) being connected to the first guide plate (110) and the other end of each connecting column (160) being connected to the second guide plate (120).

10. The osteotomy guide device (100) according to claim 1, characterized in that: The first guide plate (110) and the second guide plate (120) extend in a direction away from the bone tissue and are respectively formed with a first protrusion (111) and a second protrusion (121); one end of the column (131) is connected to the first protrusion (111); and the verification portion (122) is disposed on the second protrusion (121).

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