Self-drilling type anchorage nail with mushroom head and double-hole structure

Abstract

The present application provides a kind of self-drilling type anchorage nail with mushroom head and double-hole structure, including anchorage nail component and self-drilling mechanism, the anchorage nail component includes anchorage nail head, anchorage nail rod and anchorage nail cap;The present application reduces the resistance when anchorage nail drills by using self-drilling mechanism, and increases the resistance when it exits, then fills the inside of anchorage nail head using double-hole connecting mechanism, so that the inside of anchorage nail head is close to solid state, to prevent anchorage nail from deformation or fracture when installing or exiting, by rotating anchorage nail cap using thread to drive double-hole connecting mechanism to slide out from the inside of anchorage nail head, moving double-hole connecting mechanism drives driving traction mechanism to move, moving driving traction mechanism provides power for locking mechanism, so that it is laterally extruded in jaw bone hole under the action of pressure, to improve the anti-rotation performance of anchorage nail in jaw bone, which can effectively prevent the phenomenon of anchorage nail loosening.

Description

Technical Field

[0001] This invention relates to a self-drilling anchorage screw, specifically a self-drilling anchorage screw with a mushroom head and a double-hole structure, belonging to the field of dental medical device technology. Background Technology

[0002] Anchorage screws are small metal screws used in orthodontic treatment. They are implanted in specific locations in the maxilla or mandible to provide strong traction and help move teeth into the correct position. Anchorage screws are commonly used to correct malocclusion, bite problems, or for other types of orthodontic treatment.

[0003] Patent document CN216724783U discloses an orthodontic anchorage screw, which includes an anchorage screw cap, an anchorage screw rod, and an anchorage screw tip connected to the anchorage screw rod. The anchorage screw rod is connected to the anchorage screw cap, and the anchorage screw rod is provided with threads. The inclination angle of the thread teeth in the insertion direction is 120°-130°, and the inclination angle of the thread teeth in the withdrawal direction is 95°-105°, which has the effect of improving the firmness of the orthodontic anchorage screw implantation.

[0004] However, although the orthodontic anchorage screw can use the threads to make the fixation of the orthodontic anchorage screw on the alveolar bone more secure and reduce the dislodgement rate, and adopts a multi-hole mechanism, it only increases the resistance when the anchorage screw is removed by changing the inclination angle of the threads. When the orthodontic wire is attached, the anchorage screw is still prone to loosening under the action of traction force, which affects the fixation effect. Moreover, its multi-hole structure is all located on the same horizontal plane, which leads to the thin wall thickness of the anchorage screw nut, and there is a risk of breakage and deformation when tightening. Once the anchorage screw breaks in the jawbone, it is very difficult to remove. Therefore, a self-drilling anchorage screw with a mushroom head and a double-hole structure is proposed. Summary of the Invention

[0005] In view of this, the present invention provides a self-drilling anchor nail with a mushroom head and a double-hole structure to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0006] The technical solution of this invention is implemented as follows: a self-drilling anchor nail with a mushroom head and a double-hole structure, including an anchor nail assembly and a self-drilling mechanism, wherein the anchor nail assembly includes an anchor nail head, an anchor nail rod and an anchor nail cap;

[0007] The anchor rod is fixedly connected to the bottom of the anchor head, the anchor cap is located at the top of the anchor head, the self-drilling mechanism is located on the outside of the anchor rod, a double-hole connection mechanism is provided between the anchor head and the anchor cap, two locking mechanisms are symmetrically installed on the outside of the anchor rod, a drive traction mechanism is installed between the anchor cap and the anchor rod, an inner support mechanism is provided inside the anchor rod, and an outer traction expansion mechanism is provided at the top of the anchor cap.

[0008] The self-drilling mechanism is used to reduce the resistance during the drilling of the anchor bolts and to increase the resistance when they are withdrawn.

[0009] The double-hole connection mechanism is used to connect the support nail head and the support nail cap, and to provide internal support for the support nail head, and to stagger the double-hole structure; the double-hole connection mechanism includes an external threaded post, an internal threaded groove, a first mounting hole and a second mounting hole;

[0010] Wherein, the external threaded post is fixedly connected to the bottom of the support nail head, the internal threaded groove is opened inside the support nail head, the outer side wall of the external threaded post is threadedly connected to the inner side wall of the internal threaded groove, the first hanging hole is opened on the outside of the support nail head, and the second hanging hole is opened on the outside of the external threaded post.

[0011] The locking mechanism is used in conjunction with the driving traction mechanism to laterally compress the jawbone foramen, thereby improving the anti-rotation performance of the anchorage nail within the jawbone.

[0012] The drive traction mechanism is used to provide power to the locking mechanism in conjunction with the double-hole connection mechanism;

[0013] The internal support mechanism is used to support the interior of the anchor rod and to provide an operable space inside the anchor rod in the event of anchor breakage.

[0014] The external traction extension mechanism is used to expand the traction method of the anchorage nail cap, thereby improving the clinical operability of the anchorage nail.

[0015] More preferably, the self-drilling mechanism includes a double-rounded chamfered portion, a self-drilling thread, and a cutting groove;

[0016] The double rounded chamfer is located between the anchor rod and the anchor head, the self-drilling thread is located on the outer side wall of the anchor rod, and the cutting groove is located at the bottom of the outer side wall of the anchor rod and the self-drilling thread.

[0017] More preferably, the dual-hole connection mechanism further includes an external threaded sleeve;

[0018] The outer wall of the external threaded sleeve is threadedly connected to the inner wall of the support rod, and a receiving groove is provided at the bottom of the external threaded column. The outer wall of the external threaded sleeve is slidably connected to the inner wall of the receiving groove.

[0019] More preferably, both locking mechanisms include a support sleeve, a bone nail, a first internal hexagonal groove, a connecting plate, a first spring, a pressure block, and a second spring;

[0020] The outer wall of the support sleeve is threadedly connected to the inner wall of the anchoring nail rod. The first internal hexagonal groove is formed at one end of the support sleeve. The outer wall of the bone nail is slidably connected to one side of the inner wall of the support sleeve. The connecting plate is fixedly connected to one end of the bone nail.

[0021] More preferably, the first spring is fixedly connected between the connecting plate and the inner wall of the support sleeve, the pressure block is slidably connected to one side of the inner wall of the support sleeve, and the second spring is fixedly connected between the connecting plate and the pressure block.

[0022] More preferably, the drive traction mechanism includes a third spring, a top pressure block, a connecting shaft, and an inner bolt;

[0023] The third spring is located below the top pressure block, the connecting shaft is fixedly connected to the top of the top pressure block, the top pressure block and the third spring are both slidably connected to the inner wall of the support rod, the outer wall of the connecting shaft is slidably connected to the inner wall of the external threaded sleeve, the outer wall of the inner bolt is slidably connected to the inner wall of the support rod cap and the external threaded column, and one end of the inner bolt passes through the external threaded column and is threadedly connected to the top of the connecting shaft.

[0024] More preferably, the internal support mechanism includes a closely threaded hole and a closely threaded rod;

[0025] The threaded hole is located at the bottom of the inner wall of the support rod, and the outer wall of the threaded rod is threadedly connected to the inner wall of the threaded hole.

[0026] More preferably, the external traction extension mechanism is a straight groove, the top of the support nail head is mushroom-shaped, the bottom of the outer side wall is hexagonal, and the straight groove is formed on the top of the support nail head.

[0027] More preferably, the external traction extension mechanism is an extension threaded groove, the support nail head is disc-shaped, and the extension threaded groove is formed on the upper surface of the support nail head.

[0028] More preferably, the external traction extension mechanism is a flat groove or an inner triangular groove, and the support nail head is an outer hexagonal disc or an outer hexagonal disc with a rounded arc;

[0029] The flat groove is located in the middle of the upper surface of the external hexagonal disc-shaped support nail head;

[0030] The inner triangular groove is located on the top of the hexagonal support nail head with an arc-shaped outer hexagon.

[0031] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0032] I. This invention reduces the resistance during anchoring nail drilling by utilizing a self-drilling mechanism and increases the resistance during its withdrawal. Then, a double-hole connection mechanism is used to fill the interior of the anchoring nail head, making the interior of the anchoring nail head nearly solid. This is to prevent the anchoring nail head from deforming or breaking due to stress during installation or withdrawal.

[0033] Second, this invention utilizes the rotating anchorage nail cap to drive the threaded double-hole connecting mechanism to slide out from inside the anchorage nail head, so that the position of the anchorage nail cap can be restored after the anchorage nail is installed. Furthermore, the moving double-hole connecting mechanism can drive the driving traction mechanism to move, and the moving driving traction mechanism provides power to the locking mechanism, causing it to laterally compress the jawbone hole under pressure, thereby improving the anti-rotation performance of the anchorage nail in the jawbone and effectively preventing the anchorage nail from loosening.

[0034] Third, this invention provides a fracture-assisted removal space inside the anchorage nail rod by utilizing an internal support mechanism, and fills and supports the space to ensure the overall structural strength of the anchorage nail rod. In the event of a fracture of the anchorage nail rod, the internal support mechanism can be used to remove the broken part of the anchorage nail rod from the jawbone, reducing the impact of the anchorage nail fracture and the difficulty of removal.

[0035] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a structural diagram of Embodiment 1 of the present invention;

[0038] Figure 2This is a cross-sectional structural diagram of Embodiment 1 of the present invention;

[0039] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of area A structure;

[0040] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure of region B;

[0041] Figure 5 This is an isometric view of the support sleeve of the present invention;

[0042] Figure 6 This is a bottom view of the support nail rod of the present invention;

[0043] Figure 7 This is an axonometric view of the support nail head of the present invention;

[0044] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0045] Figure 9 This is a cross-sectional structural diagram of Embodiment 3 of the present invention;

[0046] Figure 10 This is a cross-sectional structural diagram of Embodiment 4 of the present invention;

[0047] Figure 11 This is a cross-sectional structural diagram of Embodiment 5 of the present invention.

[0048] Reference numerals: 1. Support nail assembly; 2. Self-drilling mechanism; 3. Double-hole connection mechanism; 4. Locking mechanism; 5. Drive traction mechanism; 6. Internal support mechanism; 7. External traction expansion mechanism; 101. Support nail head; 102. Support nail rod; 103. Support nail cap; 201. Double rounded chamfer; 202. Self-drilling thread; 203. Cutting groove; 301. External threaded post; 302. Internal threaded groove; 303. External threaded sleeve; 304. First mounting hole; 305. Two mounting holes; 401, support sleeve; 402, bone nail; 403, first internal hexagonal groove; 404, connecting plate; 405, first spring; 406, bearing block; 407, second spring; 501, third spring; 502, top pressure block; 503, connecting shaft; 504, internal bolt; 601, threaded hole; 602, threaded rod; 701, slotted groove; 702, extended threaded groove; 703, flat groove; 704, internal triangular groove; 81, receiving groove. Detailed Implementation

[0049] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0050] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0051] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0052] Example 1

[0053] like Figures 1-7 As shown, this embodiment of the invention provides a self-drilling anchor nail with a mushroom head and a double-hole structure, including an anchor nail assembly 1 and a self-drilling mechanism 2. The anchor nail assembly 1 includes an anchor nail head 101, an anchor nail rod 102 and an anchor nail cap 103.

[0054] The support rod 102 is fixedly connected to the bottom of the support rod head 101, the support rod cap 103 is located on the top of the support rod head 101, the self-drilling mechanism 2 is located on the outside of the support rod 102, a double-hole connection mechanism 3 is provided between the support rod head 101 and the support rod cap 103, two locking mechanisms 4 are symmetrically installed on the outside of the support rod 102, a drive traction mechanism 5 is installed between the support rod cap 103 and the support rod 102, an inner support mechanism 6 is provided inside the support rod 102, and an outer traction expansion mechanism 7 is provided on the top of the support rod cap 103.

[0055] Among them, the self-drilling mechanism 2 is used to reduce the resistance when the anchor nail is drilled and to increase the resistance when it is withdrawn;

[0056] The double-hole connection mechanism 3 is used to connect the support nail head 101 and the support nail cap 103, and to provide internal support for the support nail head 101, and to set the double-hole structure in a staggered manner; the double-hole connection mechanism 3 includes an external threaded post 301, an internal threaded groove 302, a first hanging hole 304 and a second hanging hole 305.

[0057] The external threaded post 301 is fixedly connected to the bottom of the support nail head 103, the internal threaded groove 302 is opened inside the support nail head 101, the outer side wall of the external threaded post 301 is threadedly connected to the inner side wall of the internal threaded groove 302, the first mounting hole 304 is opened on the outside of the support nail head 101, and the second mounting hole 305 is opened on the outside of the external threaded post 301.

[0058] Among them, the locking mechanism 4 is used in conjunction with the driving traction mechanism 5 to laterally compress the jawbone hole, thereby improving the anti-rotation performance of the anchorage nail in the jawbone.

[0059] Among them, the drive traction mechanism 5 is used to cooperate with the double hole connection mechanism 3 to provide power to the locking mechanism 4;

[0060] The internal support mechanism 6 is used to support the interior of the anchor rod 102 and to provide an operable space inside the anchor rod 102 in the event of anchor breakage.

[0061] Among them, the external traction extension mechanism 7 is used to extend the traction method of the anchorage nail cap 103 and improve the clinical operability of the anchorage nail.

[0062] In one embodiment, the self-drilling mechanism 2 includes a double rounded chamfer 201, a self-drilling thread 202, and a cutting groove 203;

[0063] The double rounded chamfer 201 is located between the anchor rod 102 and the anchor head 101, the self-drilling thread 202 is located on the outer side wall of the anchor rod 102, and the cutting groove 203 is located at the bottom of the outer side wall of the anchor rod 102 and the self-drilling thread 202.

[0064] The rotating anchor rod 102 drives the self-drilling thread 202 and the cutting groove 203 to drill. The cutting groove 203 is used to improve the self-tapping property of the anchor rod, and the self-drilling thread 202 is used to improve the torsional strength of the anchor rod 102, reduce the resistance when the anchor rod is drilling, and increase the resistance when it is withdrawing. The double rounded chamfer 201 is used to expand the contact surface between the anchor rod and the tissue.

[0065] In one embodiment, the dual-hole connection mechanism 3 further includes an external threaded sleeve 303;

[0066] The outer wall of the external threaded sleeve 303 is threadedly connected to the inner wall of the support nail rod 102, and the bottom of the external threaded column 301 is provided with a receiving groove 81, and the outer wall of the external threaded sleeve 303 is slidably connected to the inner wall of the receiving groove 81.

[0067] The receiving groove 81 is designed to prevent the external threaded sleeve 303 from interfering with the movement of the external threaded post 301.

[0068] In one embodiment, both locking mechanisms 4 include a support sleeve 401, a bone nail 402, a first internal hexagonal groove 403, a connecting plate 404, a first spring 405, a pressure block 406, and a second spring 407.

[0069] The outer wall of the support sleeve 401 is threadedly connected to the inner wall of the support nail rod 102. A first internal hexagonal groove 403 is formed at one end of the support sleeve 401. The outer wall of the bone nail 402 is slidably connected to one side of the inner wall of the support sleeve 401. A connecting plate 404 is fixedly connected to one end of the bone nail 402. A first spring 405 is fixedly connected between the connecting plate 404 and the inner wall of the support sleeve 401. A pressure block 406 is slidably connected to one side of the inner wall of the support sleeve 401. A second spring 407 is fixedly connected between the connecting plate 404 and the pressure block 406.

[0070] The moving top pressure block 502 squeezes one side of the pressure block 406, causing the pressure block 406 to drive the second spring 407 to compress under pressure. When the second spring 407 is compressed, it drives the connecting plate 404 to move. The moving connecting plate 404 drives the first spring 405 and the bone nail 402 to move. The moving first spring 405 is compressed, and the moving bone nail 402 slides out from the inside of the support sleeve 401.

[0071] In one embodiment, the drive traction mechanism 5 includes a third spring 501, a top pressure block 502, a connecting shaft 503, and an inner bolt 504;

[0072] The third spring 501 is located below the top pressure block 502, and the connecting shaft 503 is fixedly connected to the top of the top pressure block 502. The top pressure block 502 and the third spring 501 are slidably connected to the inner wall of the support nail rod 102. The outer wall of the connecting shaft 503 is slidably connected to the inner wall of the external threaded sleeve 303. The outer wall of the inner bolt 504 is slidably connected to the inner wall of the support nail cap 103 and the external threaded column 301. One end of the inner bolt 504 passes through the external threaded column 301 and is threadedly connected to the top of the connecting shaft 503.

[0073] The connecting shaft 503 and the external threaded column 301 are connected by the inner bolt 504. The moving external threaded column 301 drives the top pressure block 502 to move by the inner bolt 504 and the connecting shaft 503. The external threaded sleeve 303 is used to limit the movement of the top pressure block 502.

[0074] In one embodiment, the internal support mechanism 6 includes a threaded hole 601 and a threaded rod 602;

[0075] The threaded hole 601 is located at the bottom of the inner wall of the support rod 102, and the outer wall of the threaded rod 602 is threadedly connected to the inner wall of the threaded hole 601.

[0076] The threaded hole 601 provides space inside the anchor rod 102 for secondary operation. The threaded rod 602 is used to fill and support the space to ensure the overall structural strength of the anchor rod 102.

[0077] In one embodiment, the external traction extension mechanism 7 is a groove 701, the top of the support nail head 103 is mushroom-shaped, the bottom of the outer side wall is hexagonal, and the groove 701 is formed on the top of the support nail head 103.

[0078] By designing the top of the anchorage nail cap 103 into a mushroom shape, the head of the anchorage nail cap 103 is smaller and smoother, avoiding injury to the soft tissue inside the mouth during use and increasing the comfort during use. The provided slot 701 allows the anchorage nail cap 103 to be rotated by pulling it individually using a flat tool.

[0079] When the present invention is in operation: First, a tool is inserted into the slot 701 so that by rotating the tool, the slot 701 drives the support nail head 103 to rotate. The rotating support nail head 103 drives the external threaded post 301 to slide into the interior of the support nail head 101 through the threaded engagement with the internal threaded groove 302. In this way, the external threaded post 301 fills the space inside the support nail head 101, thereby improving the overall strength of the support nail head 101.

[0080] When the anchorage screw needs to be drilled into the jawbone, the anchorage screw head 102 is rotated by rotating the anchorage screw cap 103 and the anchorage screw head 101. The rotating anchorage screw head 102 drives the self-drilling thread 202 and the cutting groove 203 to drill. The cutting groove 203 is used to improve the self-tapping property of the anchorage screw. The self-drilling thread 202 is used to improve the torsional strength of the anchorage screw head 102, reduce the resistance when the anchorage screw is drilled, and increase the resistance when it is withdrawn. The double rounded chamfer 201 is used to expand the contact surface between the anchorage screw and the tissue.

[0081] After the anchor screw is drilled, the outer wall of the anchor screw head 101 is clamped using a tool, and the anchor screw cap 103 is rotated in the opposite direction to drive the external threaded post 301 out of the anchor screw head 101, thus resetting the anchor screw cap 103. Simultaneously, the moving external threaded post 301 uses the internal bolt 504 and connecting shaft 503 to drive the top pressure block 502, causing the compressed third spring 501 to extend. Then, the moving top pressure block 502 presses against one side of the bearing block 406. The compression causes the pressure block 406 to compress the second spring 407 under pressure. When the second spring 407 is compressed, it drives the connecting plate 404 to move. The moving connecting plate 404 drives the first spring 405 and the bone screw 402 to move. The moving first spring 405 is compressed, and the moving bone screw 402 slides out from the inside of the support sleeve 401 and inserts into the jawbone, so as to improve the anti-rotation performance of the anchorage screw by using the bone screw 402 inserted into the jawbone.

[0082] When the top pressure block 502 moves to the external threaded sleeve 303, the external threaded sleeve 303 limits the top pressure block 502, thereby positioning the external threaded post 301 and the top pressure block 502 and preventing the external threaded post 301 from completely sliding out of the support nail head 101, thus completing the drilling and installation operation of the support nail. The first mounting hole 304 and the second mounting hole 305 are provided for threading and mounting orthodontic wires, tension springs or rubber chains.

[0083] When the anchorage screw needs to be removed, the anchorage screw head 101 is first positioned using a tool. Then, by rotating the anchorage screw cap 103, the external threaded post 301 slides back into the anchorage screw head 101. The moving external threaded post 301, through the internal bolt 504 and connecting shaft 503, drives the pressure block 502 to reset. The reset pressure block 502 compresses the third spring 501. When the pressure block 502 resets and separates from the bearing block 406, the compressed second spring 407 drives the bearing block 406 to initially reset. Then, the compressed first spring 405 drives the connecting plate 404 to reset the bone screw 402, so that the bone screw 402 can be retracted into the support sleeve 401. Then, by simultaneously rotating the anchorage screw cap 103 and the anchorage screw head 101 using a tool, the anchorage screw rod 102 is removed from the jawbone under the action of the threads, thus completing the anchorage screw removal operation.

[0084] If the anchorage screw breaks during installation or removal, leaving part of the anchorage screw rod 102 inside the jawbone, first remove the broken part of the anchorage screw from the jawbone hole, exposing the tightly threaded rod 602 inside the anchorage screw rod 102. Then, insert a tool into the groove at one end of the tightly threaded rod 602 so that the tightly threaded rod 602 can be rotated by rotating the tool. The rotating tightly threaded rod 602 uses the tightly threaded hole 601 to rotate the remaining part of the anchorage screw rod 102, so as to cooperate with the threads formed when the anchorage screw was drilled into the jawbone to remove the anchorage screw rod 102.

[0085] Example 2

[0086] like Figures 1-8 As shown, this embodiment of the invention also provides a self-drilling anchor nail with a mushroom head and a double-hole structure, including an anchor nail assembly 1 and a self-drilling mechanism 2. The anchor nail assembly 1 includes an anchor nail head 101, an anchor nail rod 102 and an anchor nail cap 103.

[0087] The support rod 102 is fixedly connected to the bottom of the support rod head 101, the support rod cap 103 is located on the top of the support rod head 101, the self-drilling mechanism 2 is located on the outside of the support rod 102, a double-hole connection mechanism 3 is provided between the support rod head 101 and the support rod cap 103, two locking mechanisms 4 are symmetrically installed on the outside of the support rod 102, a drive traction mechanism 5 is installed between the support rod cap 103 and the support rod 102, an inner support mechanism 6 is provided inside the support rod 102, and an outer traction expansion mechanism 7 is provided on the top of the support rod cap 103.

[0088] Among them, the self-drilling mechanism 2 is used to reduce the resistance when the anchor nail is drilled and to increase the resistance when it is withdrawn;

[0089] The double-hole connection mechanism 3 is used to connect the support nail head 101 and the support nail cap 103, and to provide internal support for the support nail head 101, and to set the double-hole structure in a staggered manner; the double-hole connection mechanism 3 includes an external threaded post 301, an internal threaded groove 302, a first hanging hole 304 and a second hanging hole 305.

[0090] The external threaded post 301 is fixedly connected to the bottom of the support nail head 103, the internal threaded groove 302 is opened inside the support nail head 101, the outer side wall of the external threaded post 301 is threadedly connected to the inner side wall of the internal threaded groove 302, the first mounting hole 304 is opened on the outside of the support nail head 101, and the second mounting hole 305 is opened on the outside of the external threaded post 301.

[0091] Among them, the locking mechanism 4 is used in conjunction with the driving traction mechanism 5 to laterally compress the jawbone hole, thereby improving the anti-rotation performance of the anchorage nail in the jawbone.

[0092] Among them, the drive traction mechanism 5 is used to cooperate with the double hole connection mechanism 3 to provide power to the locking mechanism 4;

[0093] The internal support mechanism 6 is used to support the interior of the anchor rod 102 and to provide an operable space inside the anchor rod 102 in the event of anchor breakage.

[0094] Among them, the external traction extension mechanism 7 is used to extend the traction method of the anchorage nail cap 103 and improve the clinical operability of the anchorage nail.

[0095] The difference from Embodiment 1 is that the external traction extension mechanism 7 is an extension threaded groove 702, the support nail cap 103 is disc-shaped, the extension threaded groove 702 is opened on the upper surface of the support nail cap 103, and the rest of the structure is the same as that of Embodiment 1.

[0096] By designing the anchoring nail 103 as a disc shape, the outer side of the anchoring nail 103 is made smoother. The extended threaded groove 702 is provided to install other structures on the anchoring nail 103, and the anchoring nail 103 can be rotated by inserting a bolt tool into the extended threaded groove 702.

[0097] Example 3

[0098] like Figures 1-9 As shown, this embodiment of the invention also provides a self-drilling anchor nail with a mushroom head and a double-hole structure, including an anchor nail assembly 1 and a self-drilling mechanism 2. The anchor nail assembly 1 includes an anchor nail head 101, an anchor nail rod 102 and an anchor nail cap 103.

[0099] The support rod 102 is fixedly connected to the bottom of the support rod head 101, the support rod cap 103 is located on the top of the support rod head 101, the self-drilling mechanism 2 is located on the outside of the support rod 102, a double-hole connection mechanism 3 is provided between the support rod head 101 and the support rod cap 103, two locking mechanisms 4 are symmetrically installed on the outside of the support rod 102, a drive traction mechanism 5 is installed between the support rod cap 103 and the support rod 102, an inner support mechanism 6 is provided inside the support rod 102, and an outer traction expansion mechanism 7 is provided on the top of the support rod cap 103.

[0100] Among them, the self-drilling mechanism 2 is used to reduce the resistance when the anchor nail is drilled and to increase the resistance when it is withdrawn;

[0101] The double-hole connection mechanism 3 is used to connect the support nail head 101 and the support nail cap 103, and to provide internal support for the support nail head 101, and to set the double-hole structure in a staggered manner; the double-hole connection mechanism 3 includes an external threaded post 301, an internal threaded groove 302, a first hanging hole 304 and a second hanging hole 305.

[0102] The external threaded post 301 is fixedly connected to the bottom of the support nail head 103, the internal threaded groove 302 is opened inside the support nail head 101, the outer side wall of the external threaded post 301 is threadedly connected to the inner side wall of the internal threaded groove 302, the first mounting hole 304 is opened on the outside of the support nail head 101, and the second mounting hole 305 is opened on the outside of the external threaded post 301.

[0103] Among them, the locking mechanism 4 is used in conjunction with the driving traction mechanism 5 to laterally compress the jawbone hole, thereby improving the anti-rotation performance of the anchorage nail in the jawbone.

[0104] Among them, the drive traction mechanism 5 is used to cooperate with the double hole connection mechanism 3 to provide power to the locking mechanism 4;

[0105] The internal support mechanism 6 is used to support the interior of the anchor rod 102 and to provide an operable space inside the anchor rod 102 in the event of anchor breakage.

[0106] Among them, the external traction extension mechanism 7 is used to extend the traction method of the anchorage nail cap 103 and improve the clinical operability of the anchorage nail.

[0107] The difference from Embodiment 1 and Embodiment 2 is that: the external traction extension mechanism 7 is a flat groove 703, and the support nail 103 is an external hexagonal disc shape;

[0108] The flat groove 703 is located in the middle of the upper surface of the hexagonal disc-shaped support nail head 103, and the rest of the structure is the same as in Embodiment 1.

[0109] By designing the support nail head 103 as an external hexagonal disc shape, the overall height of the support nail head 103 is reduced. An internal hexagonal tool can be individually fitted onto the support nail head 103 or simultaneously fitted onto the support nail head 103 and the support nail head 101, so as to unify the tools. A flat groove 703 is provided to cooperate with the flat tool to independently pull the support nail head 103 to rotate.

[0110] Example 4

[0111] like Figures 1-10 As shown, this embodiment of the invention also provides a self-drilling anchor nail with a mushroom head and a double-hole structure, including an anchor nail assembly 1 and a self-drilling mechanism 2. The anchor nail assembly 1 includes an anchor nail head 101, an anchor nail rod 102 and an anchor nail cap 103.

[0112] The support rod 102 is fixedly connected to the bottom of the support rod head 101, the support rod cap 103 is located on the top of the support rod head 101, the self-drilling mechanism 2 is located on the outside of the support rod 102, a double-hole connection mechanism 3 is provided between the support rod head 101 and the support rod cap 103, two locking mechanisms 4 are symmetrically installed on the outside of the support rod 102, a drive traction mechanism 5 is installed between the support rod cap 103 and the support rod 102, an inner support mechanism 6 is provided inside the support rod 102, and an outer traction expansion mechanism 7 is provided on the top of the support rod cap 103.

[0113] Among them, the self-drilling mechanism 2 is used to reduce the resistance when the anchor nail is drilled and to increase the resistance when it is withdrawn;

[0114] The double-hole connection mechanism 3 is used to connect the support nail head 101 and the support nail cap 103, and to provide internal support for the support nail head 101, and to set the double-hole structure in a staggered manner; the double-hole connection mechanism 3 includes an external threaded post 301, an internal threaded groove 302, a first hanging hole 304 and a second hanging hole 305.

[0115] The external threaded post 301 is fixedly connected to the bottom of the support nail head 103, the internal threaded groove 302 is opened inside the support nail head 101, the outer side wall of the external threaded post 301 is threadedly connected to the inner side wall of the internal threaded groove 302, the first mounting hole 304 is opened on the outside of the support nail head 101, and the second mounting hole 305 is opened on the outside of the external threaded post 301.

[0116] Among them, the locking mechanism 4 is used in conjunction with the driving traction mechanism 5 to laterally compress the jawbone hole, thereby improving the anti-rotation performance of the anchorage nail in the jawbone.

[0117] Among them, the drive traction mechanism 5 is used to cooperate with the double hole connection mechanism 3 to provide power to the locking mechanism 4;

[0118] The internal support mechanism 6 is used to support the interior of the anchor rod 102 and to provide an operable space inside the anchor rod 102 in the event of anchor breakage.

[0119] Among them, the external traction extension mechanism 7 is used to extend the traction method of the anchorage nail cap 103 and improve the clinical operability of the anchorage nail.

[0120] The difference from Embodiment 1, Embodiment 2 and Embodiment 3 is that: the external traction extension mechanism 7 is an inner triangular groove 704, and the support nail 103 is an outer hexagonal disc shape with a rounded arc;

[0121] The inner triangular groove 704 is located on the top of the hexagonal support nail 103 with an arc, and the rest of the structure is the same as in Embodiment 1.

[0122] By designing the support nail cap 103 into a rounded hexagonal shape, the overall height of the support nail cap 103 is reduced, and the top edge is rounded to increase user comfort. The inner triangular groove 704 allows a triangular tool to be inserted into the inner triangular groove 704 to rotate the support nail cap 103. Alternatively, the hexagonal tool can be fitted onto the outside of the support nail cap 103 and the support nail head 101 to rotate both simultaneously.

[0123] Example 5

[0124] like Figures 1-11 As shown, this embodiment of the invention also provides a self-drilling anchoring nail with a mushroom head and a double-hole structure. The difference between this and embodiments one, two, three, and four is that the outer diameter of the anchoring nail head 101 and the anchoring nail rod 102 is increased, and the length of the anchoring nail rod 102 is shortened. The specific structure is as follows: Figure 11 As shown, different specifications of anchorage nails can be selected according to actual needs. The rest of the structure is the same as in Example 1.

[0125] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A self-drilling type anchorage nail with a mushroom head and a double-hole structure, comprising an anchorage nail assembly (1) and a self-drilling mechanism (2), characterized in that, The anchorage nail assembly (1) comprises an anchorage nail head (101), an anchorage nail rod (102) and an anchorage nail cap (103); The anchorage nail rod (102) is fixedly connected to the bottom of the anchorage nail head (101), the anchorage nail cap (103) is arranged on the top of the anchorage nail head (101), the self-drilling mechanism (2) is arranged on the outer side of the anchorage nail rod (102), a double-hole connecting mechanism (3) is arranged between the anchorage nail head (101) and the anchorage nail cap (103), two locking mechanisms (4) are symmetrically arranged on the outer side of the anchorage nail rod (102), a driving traction mechanism (5) is arranged between the anchorage nail cap (103) and the anchorage nail rod (102), an inner support mechanism (6) is arranged in the anchorage nail rod (102), and an outer traction expansion mechanism (7) is arranged on the top of the anchorage nail cap (103); the top of the anchorage nail cap (103) is in the shape of a mushroom head, the bottom of the outer side wall is in the shape of a hexagon, or the anchorage nail cap (103) is in the shape of a round cake, or the anchorage nail cap (103) is in the shape of an outer hexagonal cake, or the anchorage nail cap (103) is in the shape of an outer hexagonal cake with a circular arc; The self-drilling mechanism (2) is used for reducing the resistance during drilling of the anchorage nail and increasing the resistance during withdrawal of the anchorage nail. The double-hole connecting mechanism (3) is used for connecting the anchorage nail head (101) and the anchorage nail cap (103) and providing support for the inside of the anchorage nail head (101), and the double-hole structure is arranged in a staggered manner; the double-hole connecting mechanism (3) comprises an outer threaded column (301), an inner threaded groove (302), a first hanging hole (304) and a second hanging hole (305); The outer threaded column (301) is fixedly connected to the bottom of the anchorage nail cap (103), the inner threaded groove (302) is arranged in the inside of the anchorage nail head (101), the outer side wall of the outer threaded column (301) is threadedly connected with the inner side wall of the inner threaded groove (302), the first hanging hole (304) is arranged on the outer side of the anchorage nail head (101), and the second hanging hole (305) is arranged on the outer side of the outer threaded column (301); The locking mechanism (4) is used for cooperating with the driving traction mechanism (5) to laterally extrude the jaw hole, so as to improve the anti-rotation performance of the anchorage nail in the jaw. The driving traction mechanism (5) is used for providing power for the locking mechanism (4) in cooperation with the double-hole connecting mechanism (3). The inner support mechanism (6) is used for supporting the inside of the anchorage nail rod (102) and providing an operable space in the inside of the anchorage nail rod (102) when the anchorage nail is broken. The outer traction expansion mechanism (7) is used for expanding the traction mode of the anchorage nail cap (103) and improving the clinical operability of the anchorage nail.

2. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 1, characterized in that: The self-drilling mechanism (2) comprises a double-circle chamfer portion (201), a self-drilling thread (202) and a cutting groove (203). The double-circle chamfering portion (201) is arranged between the anchoring nail rod (102) and the anchoring nail head (101), the self-drilling thread (202) is arranged on the outer side wall of the anchoring nail rod (102), and the cutting groove (203) is arranged on the bottom of the outer side wall of the anchoring nail rod (102) and the self-drilling thread (202).

3. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 1, characterized in that: The double-hole connecting mechanism (3) further comprises an outer threaded sleeve (303); The outer side wall of the outer threaded sleeve (303) is in threaded connection with the inner side wall of the anchoring nail rod (102), and the bottom of the outer threaded column (301) is provided with a containing groove (81), and the outer side wall of the outer threaded sleeve (303) is in sliding connection with the inner side wall of the containing groove (81).

4. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 1, characterized in that: The two locking mechanisms (4) each comprise a supporting sleeve (401), a bone nail (402), a first internal hexagonal groove (403), a connecting plate (404), a first spring (405), a pressure-bearing block (406) and a second spring (407). The outer side wall of the supporting sleeve (401) is in threaded connection with the inner side wall of the anchoring nail rod (102), the first internal hexagonal groove (403) is arranged at one end of the supporting sleeve (401), the outer side wall of the bone nail (402) is in sliding connection with one side of the inner side wall of the supporting sleeve (401), and one end of the bone nail (402) is fixedly connected with the connecting plate (404).

5. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 4, characterized in that: The first spring (405) is fixedly connected between the connecting plate (404) and the inner side wall of the supporting sleeve (401), the pressure-bearing block (406) is in sliding connection with one side of the inner side wall of the supporting sleeve (401), and the second spring (407) is fixedly connected between the connecting plate (404) and the pressure-bearing block (406).

6. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 3, characterized in that: The driving traction mechanism (5) comprises a third spring (501), a pressure block (502), a connecting shaft (503) and an internal bolt (504). The third spring (501) is arranged below the pressure block (502), the connecting shaft (503) is fixedly connected to the top of the pressure block (502), the pressure block (502) and the third spring (501) are in sliding connection with the inner side wall of the anchoring nail rod (102), the outer side wall of the connecting shaft (503) is in sliding connection with the inner side wall of the outer threaded sleeve (303), the outer side wall of the internal bolt (504) is in sliding connection with the inner side wall of the anchoring nail cap (103) and the outer threaded column (301), and one end of the internal bolt (504) penetrates through the outer threaded column (301) and is in threaded connection with the top of the connecting shaft (503).

7. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 1, characterized in that: The inner support mechanism (6) comprises a female threaded hole (601) and a female threaded rod (602). The female threaded hole (601) is arranged on the inner side wall of the anchoring nail rod (102), and the outer side wall of the female threaded rod (602) is in threaded connection with the inner side wall of the female threaded hole (601).

8. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to any one of claims 1-7, characterized in that: When the top of the anchorage nail cap (103) is mushroom-shaped and the bottom of the outer side wall is hexagonal, the outer traction expansion mechanism (7) is a one-groove (701), and the one-groove (701) is arranged on the top of the anchorage nail cap (103).

9. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to any one of claims 1-7, characterized in that: When the anchorage nail cap (103) is a round cake shape, the outer traction expansion mechanism (7) is an expansion thread groove (702), and the expansion thread groove (702) is arranged on the upper surface of the anchorage nail cap (103).

10. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to any one of claims 1-7, characterized in that: When the anchorage nail cap (103) is an outer hexagonal cake shape or an arc outer hexagonal cake shape, the outer traction expansion mechanism (7) is a flat groove (703) or an inner triangular groove (704); The flat groove (703) is arranged on the middle part of the upper surface of the outer hexagonal cake-shaped anchorage nail cap (103). The inner triangular groove (704) is arranged on the top of the arc outer hexagonal cake-shaped anchorage nail cap (103).

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