Lamina hook and lamina fixation structure

Abstract

The present invention relates to a lamina hook and a lamina fixation structure. The lamina hook includes: a fixed seat, which includes a connecting end and a fastening end, and the connecting end and the fastening end are communicated with each other so as to form a receiving cavity in the fixed seat; a fixing member, the fixing member includes a connecting head and a fixing hook, the end face of the connecting head is an arc surface, the connecting head is used to be placed into the receiving cavity and be clamped with the connecting end, and the fixing hook exposes from the fixed seat; a pressing and positioning member, which is detachably connected to the fixed seat and is used to abut against the lamina hook connecting body. This embodiment can effectively hook the lamina, the notch is very low, and there will be no obvious foreign body sensation after being implanted into the human body.

Description

Technical Field

[0001] The present invention relates to the field of medical device equipment, and particularly to a lamina hook and a lamina fixation structure. Background Art

[0002] In posterior spinal fixation surgery, in addition to the common screw-rod system, in order to enhance the overall stability, a lamina hook is usually used to hook the lamina for auxiliary fixation. However, due to the irregular physiological shape of the vertebral body and the flexible use position of the lamina hook, there are various types of lamina hooks currently available on the market. For example, it can be set in forms such as straight or oblique curved according to the surgical use requirements. However, in actual surgical requirements, due to the limitations of the anatomical morphology and the position of the connecting rod, the pre-set shaped lamina hook is difficult to effectively hook the lamina and cannot play its original role; and since the lamina hook is fixed on the outside of the vertebral body, the height of the lamina hook needs to be relatively low so that there is no obvious foreign body sensation after implantation. Summary of the Invention

[0003] Based on this, in view of the problem that the lamina is difficult to be effectively hooked and is prone to foreign body sensation after being implanted into the human body, it is necessary to provide a lamina hook and a lamina fixation structure.

[0004] A lamina hook includes:

[0005] A fixed seat, including a connecting end and a fastening end, the connecting end and the fastening end are connected in communication to form an accommodation cavity in the fixed seat;

[0006] A fixing member, the fixing member includes a connecting head and a fixing hook, the end face of the connecting head is an arc surface, the connecting head is used to be placed into the accommodation cavity and is clamped with the connecting end, and the fixing hook protrudes from the fixed seat;

[0007] A pressing and positioning member, which is detachably connected to the fixed seat and is used to abut against the lamina hook connecting body.

[0008] The above-mentioned lamina hook has at least the following beneficial technical effects:

[0009] When a single lamina hook fixes the lamina, since the end face of the connecting head is an arc surface, the connecting head can freely swing or rotate relative to the lamina hook connecting body. First, adjust the spatial position of the fixing hook according to the actual anatomical morphology and the position of the lamina hook connecting body and hook the lamina, and then operate the pressing and positioning member to apply pressure to the lamina hook connecting body and the connecting head in sequence, then the fixing hook can be firmly fixed in the fixed seat. After positioning, the position of the fixing hook relative to the fixed seat is stable and unchanged. Fixing the remaining lamina hooks according to this method can achieve the fixation of the entire lamina.

[0010] When this embodiment is applied to posterior spinal internal fixation surgery, the hook body can move freely, can adjust the spatial position of the fixing hook according to the actual anatomical shape and the position of the lamina hook connecting body, and firmly hook the lamina, enhancing the overall stability of the spine and playing its due role; it can adapt to the fixation of various forms of laminae, expanding the scope of use, eliminating the need to prepare different models of products for different laminae, saving costs, and also avoiding the reduction of surgical efficiency caused by choosing the wrong product model.

[0011] In the accommodating cavity of the fixing seat, only a connecting head, a lamina hook connecting body, and a pressing and positioning component are arranged from the connecting end to the fastening end. Therefore, the distance between the connecting end and the fastening end is short, and there will be no obvious foreign body sensation after implantation into the human body, and the notch is very low, so that normal fixation can be achieved for laminae of various heights and shapes.

[0012] In some embodiments, a fixing groove for embedding and installing the lamina hook connecting body is formed on the fixing seat.

[0013] In some embodiments, the notch of the fixing groove is arranged at the fastening end, and the fixing groove extends towards the connecting end.

[0014] In some embodiments, both ends of the arc surface extending along the axial direction of the lamina hook connecting body are bent away from the lamina hook connecting body.

[0015] In some embodiments, both ends of the arc surface extending along the radial direction of the lamina hook connecting body are bent towards the lamina hook connecting body.

[0016] In some embodiments, the pressing and positioning component includes a limit screw, and the limit screw is in threaded cooperation with the accommodating cavity.

[0017] In some embodiments, a limit cavity for accommodating the connecting head is formed at the connecting end of the accommodating cavity, and the width of the neck of the limit cavity is smaller than the maximum cross-sectional width of the connecting head.

[0018] In some embodiments, an outwardly expanding chamfer is formed on one side of the limit cavity close to the connecting end.

[0019] In some embodiments, an installation groove communicating with the accommodating cavity is formed on the side wall surface of the fixing seat for the connecting head to be inserted.

[0020] A lamina fixation structure includes a lamina hook connecting body and at least two of any one of the above lamina hooks. Each lamina hook is connected by the lamina hook connecting body, and the pressing and positioning component, the lamina hook connecting body, and the connecting head are abutted in sequence to press and position the fixing hook on the fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The exploded view of the lamina hook provided by an embodiment of the present invention;

[0022] Figure 2 is Figure 1 The schematic diagram of the pressing and positioning component in the lamina hook;

[0023] Figure 3 is Figure 1 The schematic diagram of the fixed seat in the lamina hook;

[0024] Figure 4 is Figure 3 The sectional view taken along the line A-A of

[0025] Figure 5 is Figure 1 The view in the direction B of the fixing component in the lamina hook;

[0026] Figure 6 is Figure 5 The left view of

[0027] In the figure, 10 is the lamina hook connecting body;

[0028] 100 is the fixed seat; 101 is the accommodating cavity; 1011 is the limiting cavity; 1011a is the outward expanding chamfer; 110 is the connecting end; 120 is the fastening end; 130 is the fixing groove;

[0029] 200 is the fixing component; 210 is the connecting head; 211 is the arc surface; 220 is the fixing hook;

[0030] 300 is the pressing and positioning component; 310 is the limiting screw; 311 is the driving hole. Detailed implementation manners

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] To facilitate the understanding of the present invention, various embodiments defined by the claims of the present invention will be described more comprehensively below with reference to the relevant accompanying drawings. The preferred embodiments of the present invention are given in the drawings, which include various specific details to assist in the understanding, but these details should be regarded as merely exemplary. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Accordingly, those of ordinary skill in the art will recognize that various changes and improvements can be made to the various embodiments described herein without departing from the scope of the present invention defined by the appended claims. In addition, for the sake of clarity and conciseness, the descriptions of well-known functions and structures may be omitted.

[0033] It will be apparent to those skilled in the art that the following description of various embodiments of the present invention is for explanatory purposes only and is not intended to limit the present invention as defined by the appended claims.

[0034] Throughout the specification and claims of this application document, the words "comprising" and "including" and variations of the words, such as "comprises" and "includes", mean "including but not limited to", and are not intended to (and will not) exclude other components, wholes or steps. Features, wholes or characteristics described in connection with a particular aspect, embodiment or example of the present invention will be understood to be applicable to any other aspect, embodiment or example described herein, unless incompatible therewith.

[0035] It should be understood that the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The expressions "comprising" and / or "may comprise" used in the present invention are intended to indicate the existence of corresponding functions, operations or elements, and are not intended to limit the existence of one or more functions, operations and / or elements. Furthermore, in the present invention, the terms "comprising" and / or "having" are intended to indicate the existence of the features, quantities, operations, elements and components disclosed in the application document, or combinations thereof. Therefore, the terms "comprising" and / or "having" should be understood to allow for the additional possibility of the existence of one or more other features, quantities, operations, elements and components, or combinations thereof.

[0036] In the present invention, the expression "or" includes any and all combinations of the words listed together. For example, "A or B" may include A or B, or may include both A and B.

[0037] It should be understood that when an element is referred to as "fixed to" another element, it may be directly on the other element or there may also be intervening elements; when an element is considered to be "connected" or "coupled" to another element, it may be directly or coupled to the other element or there may be intervening elements present at the same time.

[0038] The "upper", "lower", "left", "right", etc. mentioned in the text are only used to represent the relative positional relationship. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. It should also be understood that terms (such as those defined in a common dictionary), should be interpreted as having a meaning consistent with the context of the relevant field and this specification, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0040] As Figure 1 shown, in one embodiment of the present invention, a lamina hook is provided, including:

[0041] A fixed seat 100, including a connecting end 110 and a fastening end 120, the connecting end 110 communicating with the fastening end 120 to form a receiving cavity 101 in the fixed seat 100;

[0042] A fixing member 200, the fixing member 200 including a connecting head 210 and a fixing hook 220, the connecting head 210 being placed into the receiving cavity 101 and clamped with the connecting end 110, the end face of the connecting head 210 being an arc surface 211, and the fixing hook 220 being exposed outside the fixed seat 100;

[0043] A pressing and positioning member 300, inserted into the receiving cavity 101 from the fastening end 120, one end of the pressing and positioning member 300 facing the receiving cavity 101 being capable of contacting a lamina hook connecting body 10 passing through the fixed seat 100 and located between the pressing and positioning member 300 and the connecting head 210, and pressing and positioning the fixing hook 220 on the fixed seat 100 by sequentially applying pressure to the lamina hook connecting body 10 and the connecting head 210 that contacts the lamina hook connecting body 10 through the arc surface 211.

[0044] In the operation of specifically fixing the lamina, it is usually necessary to connect multiple lamina hooks in series by using the lamina hook connecting body 10, and arrange each lamina hook along the length direction of the lamina, so as to cooperatively fix the entire lamina along the length direction of the lamina. The lamina hook connecting body 10 can adopt a connecting rod, a connecting wire or other forms of connecting components. The connecting rod can be a cylinder, a semi-cylinder, etc., and is preferably a cylinder. When a single lamina hook fixes the lamina, since the end face of the connecting head 210 is an arc surface 211 (an arc concave surface, such as an inner concave cylindrical surface, etc.), the connecting head 210 can freely swing or rotate relative to the lamina hook connecting body 10. First, adjust the spatial position of the fixing hook 220 according to the actual anatomical shape and the position of the lamina hook connecting body 10 and hook the lamina, and then operate the pressing and positioning component 300 to apply pressure to the lamina hook connecting body 10 and the connecting head 210 in sequence, so as to firmly position the fixing hook 220 on the fixing seat 100. After positioning, the position of the fixing hook 220 relative to the fixing seat 100 is stable and unchanged. Fixing the remaining lamina hooks according to this method can achieve the fixation of the entire lamina. The swinging and rotating mentioned here refer to, referring to Figure 1 , taking the axial direction of the lamina hook connecting body 10 as the X-axis, the axial direction of the fixing seat 100 as the Z-axis, and the direction perpendicular to the X-axis and the Z-axis as the Y-axis, rotation means rotation around the Z-axis, and swinging means rotation around the X-axis or rotation around the Y-axis.

[0045] When this embodiment is applied to posterior spinal internal fixation surgery, the hook body can move freely, can adjust the spatial position of the fixing hook 220 according to the actual anatomical shape and the position of the lamina hook connecting body 10 and firmly hook the lamina, enhances the overall stability of the spine, and can play its due role; it can adapt to the fixation of various forms of laminae, expands the scope of use, does not require preparing products of different models for different laminae, saves costs, and can also avoid the reduction of surgical efficiency caused by selecting the product model.

[0046] In the accommodating cavity 101 of the fixing seat 100, only the connecting head 210, the lamina hook connecting body 10 and the pressing and positioning component 300 are arranged from the connecting end 110 to the fastening end 120. Therefore, the distance between the connecting end 110 and the fastening end 120 is short, and there will be no obvious foreign body sensation after being implanted into the human body, and the notch is very low, so that various heights and shapes of laminae can be normally fixed.

[0047] Referring to Figure 1 , in some embodiments, a fixing groove 130 for embedding and installing the lamina hook connecting body 10 is formed on the fixing seat 100.

[0048] During specific operation, the lamina hook connecting body 10 can be directly inserted into the fixing seat 100 from the notch of the fixing groove 130, and then the pressing and positioning component 300 is operated to apply pressure to the lamina hook connecting body 10 and the connecting head 210 in sequence, so that the fixing hook 220 can be firmly positioned on the fixing seat 100. After positioning, the position of the fixing hook 220 relative to the fixing seat 100 can be kept stable and unchanged.

[0049] In this embodiment, by providing the fixing groove 130 on the fixing seat 100, it is convenient to install the lamina hook connecting body 10. By connecting a plurality of lamina hooks in series with the lamina hook connecting body 10, the entire lamina can be fixed cooperatively.

[0050] Reference Figure 1 , in some embodiments, the notch of the fixing groove 130 is provided at the fastening end 120, and the fixing groove 130 extends towards the connecting end 110.

[0051] During specific operation, the pressing and positioning component 300 can be first removed from the fixing seat 100, the lamina hook connecting body 10 is inserted into the interior of the fixing groove 130 from the notch of the fastening end 120, and then the pressing and positioning component 300 is installed on the fastening end 120 of the fixing seat 100. The pressing and positioning component 300 applies pressure to the lamina hook connecting body 10 and the connecting head 210 in sequence, so that the fixing hook 220 can be firmly positioned on the fixing seat 100.

[0052] In this embodiment, the notch of the fixing groove 130 is provided at the fastening end 120. Compared with providing the fixing groove 130 at other parts of the fixing seat 100, the lamina hook connecting body 10 can be directly placed from the fastening end 120, and the operation is more convenient. Moreover, after the pressing and positioning component 300 is installed on the fastening end 120, it can block the notch and prevent the lamina hook connecting body 10 from escaping from the fixing groove 130, avoiding the lamina hook connecting body 10 from escaping from the notch of the fixing groove 130 due to external force.

[0053] It can be understood that in some other embodiments, the fixing groove 130 can be directly provided on the surface of the fixing seat 100 other than the connecting end 110 and the fastening end 120, which can also facilitate the installation of the lamina hook connecting body 10, and there is no limitation here.

[0054] In addition, the fixing groove 130 can also be a through hole opened on the side wall surface of the fixing seat 100 (the outer peripheral surface connecting the connecting end 110 and the fastening end 120). Passing the lamina hook connecting body 10 through the through hole can also achieve the series connection of each lamina hook, and there is no specific limitation here.

[0055] In this embodiment, the end face of the connecting head 210 is an arc surface 211, and the shape of the arc surface 211 is the same as or similar to the cylindrical surface of the lamina hook connecting body 10, so it can swing around the X axis.

[0056] Further, the radius of curvature of the arc surface 211 (the radius of curvature of the radial section of the cylindrical surface) is greater than the radius of curvature of the lamina hook connecting body 10 (the radius of curvature of the radial section of the cylindrical surface), that is, the arc surface 211 is slightly flatter than the cylindrical surface of the lamina hook connecting body 10. Therefore, the connecting head 210 can rotate slightly around the Z axis.

[0057] Further, referring to Figure 1 、 Figure 5 and Figure 6 , in some embodiments, both ends of the arc surface 211 extending along the axial direction of the lamina hook connecting body 10 are bent away from the lamina hook connecting body 10. Therefore, the connecting head 210 can swing slightly around the Y axis. Here, "both ends of the arc surface 211 extending along the axial direction of the lamina hook connecting body 10 are bent away from the lamina hook connecting body 10" means that both ends of the arc surface 211 extending along the axial direction of the lamina hook connecting body 10 are away from the lamina hook connecting body 10, forming a gap with the lamina hook connecting body 10.

[0058] In some embodiments, the connecting head 210 can have the above three rotation modes simultaneously. However, in certain embodiments, if it is desired to limit the degree of freedom in a certain direction, the shape of the connecting head 210 can be adjusted on the basis of the above. For example, when it is desired to reduce the degree of freedom of the connecting head 210 to swing around the X axis, both ends of the arc surface 211 extending along the radial direction of the lamina hook connecting body 10 can be bent towards the lamina hook connecting body 10, that is, "hugging" the lamina hook connecting body 10, so as to limit the degree of freedom of the connecting head 210 to swing around the X axis and reduce the control difficulty during the operation.

[0059] The above design points can be freely combined to meet the adjustment requirements for the connecting head 210 in actual operation.

[0060] Referring to Figure 2 , in some embodiments, the pressing and positioning member 300 includes a limit screw 310, and the limit screw 310 is screwed into the accommodating cavity 101 in a threaded fit.

[0061] Specifically, the limit screw 310 can be firmly connected to the fixed seat 100 by being screwed into the accommodating cavity 101 in a threaded fit. In this embodiment, the threaded connection method is simple and convenient, facilitating quick installation and free disassembly; and the threaded fit connection is firm, improving the fixing effect on the lamina.

[0062] Of course, in some other embodiments, the pressing and positioning member 300 can include structures such as a positioning wedge block and a fixing plug, which are not specifically limited here.

[0063] Referring to Figure 2, in some embodiments, a driving hole 311 for connecting a rotary driving member is provided on the end face of the limit screw 310 facing away from the accommodating cavity 101.

[0064] Specifically, insert a rotary driving member such as a screwdriver into the driving hole 311, and rotate the screwdriver to drive the limit screw 310 to rotate and move towards the inside of the accommodating cavity 101, thereby pressing the lamina hook connector 10 and the connector head 210. The driving hole 311 provided in this embodiment can facilitate the connection with the rotary driving member, and thus is beneficial to the quick driving operation of the limit screw 310.

[0065] Furthermore, the shape of the driving hole 311 is a plum blossom shape or a flat mouth shape. The driving hole 311 with a plum blossom shape or a flat mouth shape can cooperate with common types of screwdrivers on the market, thus facilitating the implementation of this embodiment.

[0066] Reference Figure 4 , in some embodiments, a limit cavity 1011 capable of accommodating the connector head 210 is formed at a position of the accommodating cavity 101 close to the connection end 110. The neck width of the limit cavity 1011 is smaller than the maximum cross-sectional width of the connector head 210, so as to prevent the connector head 210 from disengaging from the limit cavity 1011 in a direction away from the fixed seat 100. The neck width here refers to the width of the narrowest part between the two open ends of the limit cavity 1011.

[0067] Specifically, directly connecting the connector head 210 to the fixed seat 100 can be achieved by snapping the connector head 210 into the limit cavity 1011. Since the neck width of the limit cavity 1011 is smaller than the maximum cross-sectional width of the connector head 210, it can limit the disengagement of the connector head 210 from the connection end 110 and direct separation from the fixed seat 100, avoiding the failure of fixing the lamina, and the limit cavity 1011 will not hinder the free rotation of the connector head 210.

[0068] Continue to refer to Figure 4 , in some embodiments, an outwardly expanding chamfer 1011a is formed on one side of the limit cavity 1011 close to the connection end 110. That is to say, the opening width of the limit cavity 1011 at the connection end 110 is larger than the neck width of the limit cavity 1011, and the limit cavity 1011 expands outward from the neck to the connection end 110.

[0069] Specifically, the outwardly expanding chamfer 1011a increases the width of the limit cavity 1011 on the side close to the connection end 110, so that the connector head 210 placed in the limit cavity 1011 has a larger free swing angle, thereby increasing the adjustment angle and range, and improving the adjustment freedom and flexibility.

[0070] In some embodiments, an installation groove (not shown) communicating with the accommodation cavity 101 is formed on the side wall surface of the fixed seat 100 for inserting the connector 210.

[0071] Specifically, the connector 210 can be directly inserted into the accommodation cavity 101 from the installation groove to achieve quick connection with the accommodation cavity 101. After insertion, operating the pressing and positioning member 300 can fix the connector 210.

[0072] Of course, in some other embodiments, the fixing hook 220 and the connector 210 can be sequentially inserted into the fixed seat 100 from the fastening end 120 of the fixed seat 100, and the connector 210 can be snapped into the limiting cavity 1011. Then, the lamina hook connecting body 10 and the pressing and positioning member 300 are installed. Similarly, quick installation of the fixing member 200 can be achieved, and no specific limitation is made here.

[0073] Reference Figure 1 , in some embodiments, the accommodation cavity 101 extends in a straight line direction. In this embodiment, the accommodation cavity 101 extends in a straight line direction, which is convenient for installing each component. The overall structure of the lamina hook is relatively simple, easy to manufacture, and can meet general usage requirements.

[0074] Of course, in some other embodiments, according to actual usage needs, the accommodation cavity 101 can be bent, and no specific limitation is made here.

[0075] The present invention also provides a lamina fixing structure, including at least two lamina hooks, and each of the lamina hooks is connected by a lamina hook connecting body 10.

[0076] Specifically, the lamina hook connecting body 10 connects multiple lamina hooks in series. By arranging each lamina hook along the length direction of the lamina, the entire lamina can be cooperatively fixed along the length direction of the lamina. The lamina hook connecting body 10 can adopt a connecting rod, a connecting wire or other forms of connecting components. When a single lamina hook fixes the lamina, since the end face of the connector 210 is an arc surface 211, the connector 210 can freely swing or rotate relative to the lamina hook connecting body 10. First, adjust the spatial position of the fixing hook 220 according to the actual anatomical shape and the position of the lamina hook connecting body 10 and hook the lamina. Then, operate the pressing and positioning member 300 to apply pressure to the lamina hook connecting body 10 and the connector 210 in sequence, and the fixing hook 220 can be firmly positioned on the fixed seat 100. After positioning, the position of the fixing hook 220 relative to the fixed seat 100 is stable and unchanged. Fixing each lamina hook according to this method can achieve fixation of the entire lamina.

[0077] When this embodiment is applied to posterior spinal internal fixation surgery, the hook body can move freely, be able to adjust the spatial position of the fixing hook 220 according to the actual anatomical shape and the position where the lamina hook connecting body 10 is located, and firmly hook the lamina, enhancing the overall stability of the spine and being able to play its due role; it can adapt to the fixation of various forms of laminae, expanding the scope of use, not requiring different models of products to be prepared for different laminae, saving costs, and also avoiding the reduction of surgical efficiency caused by selecting the product model.

[0078] In the accommodation cavity 101 of the fixing base 100, only the connecting head 210, the lamina hook connecting body 10 and the pressing and positioning component 300 are provided from the connecting end 110 to the fastening end 120. Therefore, the distance between the connecting end 110 and the fastening end 120 is short, and there will be no obvious foreign body sensation after being implanted into the human body, and the notch is very low, so that various heights and shapes of laminae can be normally fixed.

[0079] In the above description, although expressions such as "first" and "second" may be used to describe the various elements of the present invention, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of the corresponding elements. The above expressions are used to distinguish one component from another.

[0080] The terms used in the description of the present invention in this article are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular expressions include plural expressions, unless there are significant differences in context and scheme.

[0081] The above description is only an exemplary embodiment of the present invention, rather than being used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

[0082] Those skilled in the art can understand that the technical features of the above-described embodiments can be omitted, added, or combined in any way. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as the combinations of these technical features do not conflict, and the simple transformation methods that those skilled in the art can think of and the solutions for making adaptive and functional structural transformations to the prior art should be considered to be within the scope described in this specification.

[0083] The above-described embodiments merely represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that although the present invention has been illustrated and described with reference to various embodiments, for those of ordinary skill in the art, without departing from the concept of the present invention, several various deformations and improvements in form and detail can still be made without departing from the scope of the present invention defined by the appended claims. These all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A lamina hook, characterized in that, it includes: A fixed seat, including a connection end and a fastening end, the connection end and the fastening end are communicated with each other so as to form a receiving cavity in the fixed seat; A fixing component, the fixing component includes a connection head and a fixing hook, the end face of the connection head is an arc surface, the connection head is used to be placed into the receiving cavity and is clamped with the connection end, the fixing hook exposes from the fixed seat, the shape of the arc surface is similar to the cylindrical surface of the lamina hook connecting body, the radius of curvature of the arc surface is greater than the radius of curvature of the lamina hook connecting body, and both ends of the arc surface extending along the axial direction of the lamina hook connecting body are bent away from the lamina hook connecting body; A pressing and positioning component, detachably connected to the fixed seat, and used to abut against the lamina hook connecting body.

2. The lamina hook according to claim 1, characterized in that, a fixing groove for embedding and installing the lamina hook connecting body is formed on the fixed seat.

3. The lamina hook according to claim 2, characterized in that, the notch of the fixing groove is arranged at the fastening end, and the fixing groove extends towards the connection end.

4. The lamina hook according to claim 1, characterized in that, the pressing and positioning component includes a limit screw, and the limit screw is in threaded cooperation with the receiving cavity.

5. The lamina hook according to claim 1, characterized in that, a limit cavity for receiving the connection head is formed at the connection end of the receiving cavity, and the width of the neck of the limit cavity is smaller than the maximum cross-sectional width of the connection head.

6. The lamina hook according to claim 5, characterized in that, an outward expanding chamfer is formed on one side of the limit cavity close to the connection end.

7. The lamina hook according to claim 1, characterized in that, an installation groove communicated with the receiving cavity for the connection head to be placed into is formed on the side wall surface of the fixed seat.

8. A lamina fixing structure, characterized in that, it includes a lamina hook connecting body and at least two lamina hooks according to any one of claims 1-7, each of the lamina hooks is connected through the lamina hook connecting body, and the pressing and positioning component, the lamina hook connecting body, and the connection head abut against each other in sequence so as to press and position the fixing hook on the fixed seat.

Images