Self-drilling anchor screw with mushroom head and double-hole structure

Abstract

The present application provides a self-drilling anchor screw with a mushroom head and a double-hole structure, comprising an anchor screw assembly and a self-drilling mechanism, wherein the anchor screw assembly comprises an anchor screw head, an anchor screw rod, and an anchor screw cap. According to the present application, the self-drilling mechanism is utilized to reduce the resistance during the insertion of the anchor screw and increase the resistance during the removal of the anchor screw, and a double-hole connection mechanism is utilized to fill the interior of the anchor screw head, such that the interior of the anchor screw head is nearly solid, thereby preventing the anchor screw head from being deformed or fractured due to stress during the installation or removal of the anchor screw. By rotating the anchor screw cap, the double-hole connection mechanism is driven by means of threads to slide out of the interior of the anchor screw head, then the moving double-hole connection mechanism drives a drive traction mechanism to move, and the moving drive traction mechanism provides power to a locking mechanism, such that the locking mechanism laterally compresses the interior of a jawbone hole under the action of pressure, thereby improving the anti-rotation performance of the anchor screw within the jawbone, which can effectively prevent loosening of the anchor screw.

Description

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

[0001] The present application claims priority to the Chinese patent application No. 202411046630.2, filed on August 01, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to a self-drilling type anchorage nail, in particular a self-drilling type anchorage nail with mushroom head and double-hole structure, belonging to the technical field of dental medical instruments. BACKGROUND

[0003] Anchorage nail is a small metal nail used in orthodontic treatment, which is implanted in a specific part of the maxilla or mandible to provide strong traction to help teeth move to the correct position. Anchorage nail is usually used to solve tooth misalignment, bite problems or other types of oral correction treatment.

[0004] Patent document CN216724783U discloses an orthodontic anchorage nail, which comprises an anchorage nail cap, an anchorage nail screw and an anchorage nail tip connected with the anchorage nail screw, the anchorage nail screw is connected with the anchorage nail nut, the anchorage nail screw is provided with a thread, the inclination angle of the thread in the direction of attack is 120°-130°, and the inclination angle of the thread in the direction of exit is 95°-105°, which has the effect of improving the firmness of the orthodontic anchorage nail implant.

[0005] However, although the anchorage nail can use the thread to make the orthodontic anchorage nail more firmly fixed on the bone of the gum, reduce the falling rate of the orthodontic anchorage nail, and adopt a multi-hole mechanism, it only increases the resistance when the anchorage nail is withdrawn by changing the inclination angle of the thread. When the anchorage nail is hung with orthodontic wire, the anchorage nail is still prone to loosen under the action of traction force, affecting the fixing effect. Moreover, the multi-hole structure is located on the same horizontal plane, which leads to a relatively thin wall thickness of the anchorage nail nut, and there is a risk of fracture and deformation during screwing. In addition, once the anchorage nail is broken in the jaw bone, it is very difficult to remove. Therefore, a self-drilling type anchorage nail with mushroom head and double-hole structure is proposed. SUMMARY

[0006] Therefore, the present application provides a self-drilling type anchorage nail with mushroom head and double-hole structure to solve or alleviate the technical problems in the related art, and at least provides a beneficial choice.

[0007] The technical scheme of the present application embodiment is implemented as follows: a self-drilling type anchorage nail with mushroom head and double-hole structure, comprising an anchorage nail assembly and a self-drilling mechanism, the anchorage nail assembly comprises an anchorage nail head, an anchorage nail rod and an anchorage nail cap.

[0008] The support nail rod is fixedly connected to the bottom of the support nail head, the support nail cap is arranged at the top of the support nail head, the self-drilling mechanism is arranged outside the support nail rod, a double-hole connecting mechanism is arranged between the support nail head and the support nail cap, two locking mechanisms are symmetrically arranged outside the support nail rod, a driving traction mechanism is arranged between the support nail cap and the support nail rod, an internal support mechanism is arranged inside the support nail rod, and an external traction expansion mechanism is arranged at the top of the support nail cap.

[0009] The self-drilling mechanism is used to reduce the resistance during drilling of the support nail and increase the resistance during withdrawal of the support nail.

[0010] The double-hole connecting mechanism is used to connect the support nail head and the support nail cap, provide support for the inside of the support nail head, and arrange the double-hole structure in a staggered manner.

[0011] The outer threaded column is fixedly connected to the bottom of the support nail cap, the inner threaded groove is arranged inside the support nail head, the outer side wall of the outer threaded column is threadedly connected with the inner side wall of the inner threaded groove, the first hanging hole is arranged outside the support nail head, and the second hanging hole is arranged outside the outer threaded column.

[0012] The locking mechanism is used to cooperate with the driving traction mechanism to laterally extrude the jaw bone hole, and improve the anti-rotation performance of the support nail in the jaw bone.

[0013] The driving traction mechanism is used to provide power for the locking mechanism in cooperation with the double-hole connecting mechanism.

[0014] The internal support mechanism is used to support the inside of the support nail rod and provide an operable space inside the support nail rod when the support nail is broken.

[0015] The external traction expansion mechanism is used to expand the traction mode of the support nail cap and improve the clinical operability of the support nail.

[0016] Further preferably, the self-drilling mechanism comprises a double-circle chamfer portion, a self-drilling thread and a cutting groove.

[0017] The double-circle chamfer portion is arranged between the support nail rod and the support nail head, the self-drilling thread is arranged on the outer side wall of the support nail rod, and the cutting groove is arranged at the bottom of the outer side wall of the support nail rod and the self-drilling thread.

[0018] Further preferably, the double-hole connecting mechanism further comprises an outer threaded sleeve.

[0019] The outer side wall of the outer threaded sleeve is in threaded connection with the inner side wall of the anchoring nail rod, a containing groove is formed in the bottom of the outer threaded column, and the outer side wall of the outer threaded sleeve is in sliding connection with the inner side wall of the containing groove.

[0020] Further preferably, the two locking mechanisms each comprise a supporting sleeve, a bone nail, a first internal hexagonal groove, a connecting plate, a first spring, a pressure block and a second spring.

[0021] The outer side wall of the supporting sleeve is in threaded connection with the inner side wall of the anchoring nail rod, the first internal hexagonal groove is formed in one end of the supporting sleeve, the outer side wall of the bone nail is in sliding connection with one side of the inner side wall of the supporting sleeve, and one end of the bone nail is fixedly connected with the connecting plate.

[0022] Further preferably, the first spring is fixedly connected between the connecting plate and the inner side wall of the supporting sleeve, the pressure block is in sliding connection with one side of the inner side wall of the supporting sleeve, and the second spring is fixedly connected between the connecting plate and the pressure block.

[0023] Further preferably, the driving traction mechanism comprises a third spring, a pressing block, a connecting shaft and an internal screw bolt.

[0024] The third spring is arranged below the pressing block, the connecting shaft is fixedly connected to the top of the pressing block, and the pressing block and the third spring are both in sliding connection with the inner side wall of the anchoring nail rod; the outer side wall of the connecting shaft is in sliding connection with the inner side wall of the outer threaded sleeve, the outer side wall of the internal screw bolt is in sliding connection with the inner side wall of the anchoring nail cap and the outer threaded column, and one end of the internal screw bolt penetrates through the outer threaded column and is in threaded connection with the top of the connecting shaft.

[0025] Further preferably, the internal support mechanism comprises a female threaded hole and a female threaded rod.

[0026] The female threaded hole is formed in the inner side wall of the anchoring nail rod, and the outer side wall of the female threaded rod is in threaded connection with the inner side wall of the female threaded hole.

[0027] Further preferably, the outer traction expansion mechanism is a straight groove, the top of the anchoring nail cap is in the shape of a mushroom head, the outer side wall of the bottom is in the shape of a hexagon, and the straight groove is formed in the top of the anchoring nail cap.

[0028] Further preferably, the outer traction expansion mechanism is an expansion threaded groove, the anchoring nail cap is in the shape of a round cake, and the expansion threaded groove is formed in the upper surface of the anchoring nail cap.

[0029] Further preferably, the outer traction expansion mechanism is a flat slot or an internal triangular groove, and the anchoring nail cap is in the shape of an outer hexagonal cake or an arc-shaped outer hexagonal cake.

[0030] The flat slot is arranged in the middle of the upper surface of the outer hexagonal pie-shaped anchorage nail cap.

[0031] The inner triangular slot is arranged on the top of the outer hexagonal pie-shaped anchorage nail cap with a circular arc.

[0032] The embodiments of the present application have the following advantages due to the above technical solutions:

[0033] Firstly, the present application reduces the resistance of the anchorage nail drilling by using the self-drilling mechanism, and increases the resistance when the anchorage nail exits, and then fills the inside of the anchorage nail head by using the double-hole connecting mechanism, so that the inside of the anchorage nail head is close to a solid state, to prevent the anchorage nail head from deforming or breaking due to stress when the anchorage nail is installed or exits.

[0034] Secondly, the present application restores the position of the anchorage nail cap by rotating the anchorage nail cap to drive the double-hole connecting mechanism to slide out of the inside of the anchorage nail head after the installation of the anchorage nail is completed, and the moving double-hole connecting mechanism can drive the driving traction mechanism to move, and the moving driving traction mechanism provides power for the locking mechanism to laterally extrude the jaw bone hole under the action of pressure, so as to improve the anti-rotation performance of the anchorage nail in the jaw bone, and effectively prevent the anchorage nail from loosening.

[0035] Thirdly, the present application provides a fracture auxiliary removal space inside the anchorage nail rod by using the internal support mechanism, and fills and supports the space, to ensure the strength of the overall structure of the anchorage nail rod, and when the anchorage nail rod is broken, the internal support mechanism can take out the broken part of the anchorage nail rod from the jaw bone, reducing the influence of the anchorage nail fracture and the difficulty of taking out.

[0036] The above summary is only for the purpose of the description and does not limit in any way. In addition to the above described illustrative aspects, embodiments and features, further aspects, embodiments and features of the present application will be apparent from the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating any creative labor.

[0038] FIG. 1 is a structural diagram of an embodiment of the present application;

[0039] FIG. 2 is a cross-sectional structural schematic diagram of an embodiment of the present application;

[0040] Fig. 3 is an enlarged schematic view of the structure of region A of Fig. 2 of the present application;

[0041] Fig. 4 is an enlarged schematic view of the structure of region B of Fig. 2 of the present application;

[0042] Fig. 5 is an axial view of the support sleeve of the present application;

[0043] Fig. 6 is a bottom view of the anchoring nail rod of the present application;

[0044] Fig. 7 is an axial view of the anchoring nail head of the present application;

[0045] Fig. 8 is a schematic view of the structure of embodiment two of the present application;

[0046] Fig. 9 is a schematic view of the structure of embodiment three of the present application;

[0047] Fig. 10 is a schematic view of the structure of embodiment four of the present application;

[0048] Fig. 11 is a schematic view of the structure of embodiment five of the present application.

[0049] Reference signs: 1, anchoring nail assembly; 2, self-drilling mechanism; 3, double-hole connecting mechanism; 4, locking mechanism; 5, driving traction mechanism; 6, internal support mechanism; 7, external traction expansion mechanism; 101, anchoring nail head; 102, anchoring nail rod; 103, anchoring nail cap; 201, double-circle chamfer; 202, self-drilling thread; 203, cutting groove; 301, external thread column; 302, internal thread groove; 303, external thread sleeve; 304, first hanging hole; 305, second hanging hole; 401, support sleeve; 402, bone nail; 403, first internal hexagonal groove; 404, connecting plate; 405, first spring; 406, pressure block; 407, second spring; 501, third spring; 502, pressure block; 503, connecting shaft; 504, internal bolt; 601, fine thread hole; 602, fine thread rod; 701, linear groove; 702, expansion thread groove; 703, flat slot; 704, internal triangular groove; 81, accommodating groove. DETAILED DESCRIPTION

[0050] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0051] It should be noted that the terms "first", "second", "symmetric", "array" and the like are only used for distinguishing description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "symmetric" and the like can explicitly or implicitly include one or more of the features; similarly, for some features that are not limited in number by the words "two", "three" and the like, it should be noted that the features also belong to explicitly or implicitly including one or more feature quantities.

[0052] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0053] Embodiment one

[0054] As shown in FIGS. 1-7, the present application provides a self-drilling type anchorage nail with a mushroom head and a double-hole structure, which comprises an anchorage nail assembly 1 and a self-drilling mechanism 2, the anchorage nail assembly 1 comprises an anchorage nail head 101, an anchorage nail rod 102 and an anchorage nail cap 103;

[0055] Among them, 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 outside of the anchorage nail rod 102, the 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 installed on the outside of the anchorage nail rod 102, the driving traction mechanism 5 is installed between the anchorage nail cap 103 and the anchorage nail rod 102, the inner support mechanism 6 is arranged in the inside of the anchorage nail rod 102, and the outer traction expansion mechanism 7 is arranged on the top of the anchorage nail cap 103;

[0056] Among them, the self-drilling mechanism 2 is used to reduce the resistance when the anchorage nail drills and increase the resistance when it exits;

[0057] Among them, the double-hole connecting mechanism 3 is used to connect the anchorage nail head 101 and the anchorage nail cap 103, provide support for the inside of the anchorage nail head 101, and set the double-hole structure in a staggered manner; the double-hole connecting mechanism 3 comprises an external threaded column 301, an internal threaded groove 302, a first hanging hole 304 and a second hanging hole 305;

[0058] Among them, the external threaded column 301 is fixedly connected to the bottom of the anchorage nail cap 103, the internal threaded groove 302 is arranged in the inside of the anchorage nail head 101, the outside wall of the external threaded column 301 is threadedly connected with the inside wall of the internal threaded groove 302, the first hanging hole 304 is arranged on the outside of the anchorage nail head 101, and the second hanging hole 305 is arranged on the outside of the external threaded column 301;

[0059] Among them, the locking mechanism 4 is used to cooperate with the driving traction mechanism 5 to laterally extrude the jaw bone hole, thereby improving the anti-rotation performance of the anchorage nail in the jaw bone.

[0060] The driving traction mechanism 5 is configured to drive the locking mechanism 4 in cooperation with the double-hole connecting mechanism 3.

[0061] The inner support mechanism 6 is configured to support the inside of the support pin rod 102 and provide an operable space in the inside of the support pin rod 102 when the support pin is broken.

[0062] The outer traction expansion mechanism 7 is configured to expand the traction mode of the support pin cap 103 and improve the clinical operability of the support pin.

[0063] In an embodiment, the self-drilling mechanism 2 comprises a double-circle chamfer 201, a self-drilling thread 202, and a cutting groove 203.

[0064] The double-circle chamfer 201 is arranged between the support pin rod 102 and the support pin head 101, the self-drilling thread 202 is arranged on the outer side wall of the support pin rod 102, and the cutting groove 203 is arranged at the bottom of the outer side wall of the support pin rod 102 and the self-drilling thread 202.

[0065] The self-drilling thread 202 and the cutting groove 203 are driven by the rotating support pin rod 102 to drill, the cutting groove 203 is configured to improve the self-tapping property of the support pin, the self-drilling thread 202 is configured to improve the torsional strength of the support pin rod 102, reduce the resistance during drilling of the support pin, increase the resistance during withdrawal of the support pin, and the double-circle chamfer 201 is configured to expand the contact surface between the support pin and the tissue.

[0066] In an embodiment, the double-hole connecting mechanism 3 further comprises an outer threaded sleeve 303.

[0067] The outer side wall of the outer threaded sleeve 303 is threadedly connected with the inner side wall of the support pin rod 102, the bottom of the outer threaded column 301 is provided with a receiving groove 81, and the outer side wall of the outer threaded sleeve 303 is slidingly connected with the inner side wall of the receiving groove 81.

[0068] The receiving groove 81 is configured to prevent the outer threaded sleeve 303 from interfering with the movement of the outer threaded column 301.

[0069] In an embodiment, the two locking mechanisms 4 each comprise a support sleeve 401, a bone screw 402, a first inner hexagonal groove 403, a connecting plate 404, a first spring 405, a pressure-bearing block 406, and a second spring 407.

[0070] The outer side wall of the support sleeve 401 is threadedly connected with the inner side wall of the anchorage nail rod 102, the first inner hexagonal groove 403 is arranged at one end of the support sleeve 401, the outer side wall of the bone nail 402 is slidably connected with one side of the inner side wall of the support sleeve 401, the connecting plate 404 is fixedly connected with one end of the bone nail 402, the first spring 405 is fixedly connected between the connecting plate 404 and the inner side wall of the support sleeve 401, the pressure block 406 is slidably connected with one side of the inner side wall of the support sleeve 401, and the second spring 407 is fixedly connected between the connecting plate 404 and the pressure block 406.

[0071] The pressure block 406 is extruded on one side by the moving top pressing block 502, so that the pressure block 406 drives the second spring 407 to be compressed under the action of the pressure; when the second spring 407 is compressed, the connecting plate 404 is driven to move by the second spring 407, the first spring 405 and the bone nail 402 are driven to move by the moving connecting plate 404, the moving first spring 405 is compressed, and the moving bone nail 402 slides out of the inside of the support sleeve 401.

[0072] In one embodiment, the driving traction mechanism 5 comprises a third spring 501, a top pressing block 502, a connecting shaft 503 and an inner bolt 504.

[0073] The third spring 501 is arranged below the top pressing block 502, the connecting shaft 503 is fixedly connected to the top of the top pressing block 502, the top pressing block 502 and the third spring 501 are slidably connected to the inner side wall of the anchorage nail rod 102, the outer side wall of the connecting shaft 503 is slidably connected with the inner side wall of the outer threaded sleeve 303, the outer side wall of the inner bolt 504 is slidably connected with the inner side wall of the anchorage nail cap 103 and the outer threaded column 301, and one end of the inner bolt 504 penetrates through the outer threaded column 301 and is threadedly connected with the top of the connecting shaft 503.

[0074] The connecting shaft 503 and the outer threaded column 301 are connected by the inner bolt 504, the top pressing block 502 is driven to move by the moving outer threaded column 301 through the inner bolt 504 and the connecting shaft 503, and the outer threaded sleeve 303 is arranged to limit the top pressing block 502.

[0075] In one embodiment, the inner support mechanism 6 comprises a female threaded hole 601 and a female threaded rod 602.

[0076] The female threaded hole 601 is arranged at the bottom of the inner side wall of the anchorage nail rod 102, and the outer side wall of the female threaded rod 602 is threadedly connected with the inner side wall of the female threaded hole 601.

[0077] The female threaded hole 601 is arranged to make the anchorage nail rod 102 have a space that can be operated twice, and the female threaded rod 602 is arranged to fill and support the space, so as to ensure the strength of the overall structure of the anchorage nail rod 102.

[0078] In one embodiment, the outer traction expansion mechanism 7 is a T-shaped groove 701, the top of the anchorage nail cap 103 is mushroom-shaped, the outer side wall is hexagonal, and the T-shaped groove 701 is arranged on the top of the anchorage nail cap 103.

[0079] By designing the top of the anchorage nail cap 103 as mushroom-shaped, the head of the anchorage nail cap 103 is smaller and smoother, avoiding injury to the soft tissue in the oral cavity during use, and increasing the comfort during use. The T-shaped groove 701 is arranged to facilitate the use of a flat tool to individually traction the anchorage nail cap 103 for rotation.

[0080] In use, the tool is first inserted into the T-shaped groove 701 to drive the anchorage nail cap 103 to rotate by rotating the tool through the T-shaped groove 701. The rotating anchorage nail cap 103 drives the outer threaded column 301 to slide into the inside of the anchorage nail head 101 through the threaded inner threaded groove 302, so as to fill the space inside the anchorage nail head 101 with the outer threaded column 301, thereby improving the overall strength of the anchorage nail head 101.

[0081] When the anchorage nail needs to be drilled into the jaw bone, the anchorage nail rod 102 is rotated by rotating the anchorage nail cap 103 and the anchorage nail head 101, and the self-drilling thread 202 and the cutting groove 203 are driven by the rotating anchorage nail rod 102 to drill. The cutting groove 203 is arranged to improve the self-tapping property of the anchorage nail, the self-drilling thread 202 is arranged to improve the torsional strength of the anchorage nail rod 102, to reduce the resistance during drilling of the anchorage nail, and to increase the resistance during withdrawal of the anchorage nail. The double circular chamfer portion 201 is arranged to enlarge the contact surface between the anchorage nail and the tissue.

[0082] When the anchorage nail drilling is completed, the outer wall of the anchorage nail head 101 is clamped by the tool, and the outer threaded column 301 is driven out of the anchorage nail head 101 by rotating the anchorage nail cap 103 in the opposite direction, and the anchorage nail cap 103 is reset. The outer threaded column 301 in motion drives the top pressing block 502 in motion through the inner bolt 504 and the connecting shaft 503, and the compressed third spring 501 is stretched. The top pressing block 502 in motion extrudes one side of the pressure-bearing block 406, and the pressure-bearing block 406 drives the second spring 407 to be compressed under the action of pressure. When the second spring 407 is compressed, the connecting plate 404 is moved by the second spring 407, and the first spring 405 and the bone screw 402 are moved by the connecting plate 404 in motion. The first spring 405 in motion is compressed, and the bone screw 402 in motion slides out of the inside of the support sleeve 401 and penetrates into the jaw bone, so as to improve the anti-rotation performance of the anchorage nail by using the bone screw 402 penetrating into the jaw bone.

[0083] When the top pressure block 502 moves to the outer threaded sleeve 303, the outer threaded sleeve 303 is used to limit the top pressure block 502, so as to position the outer threaded column 301 and the top pressure block 502, prevent the outer threaded column 301 from sliding out of the inside of the anchorage nail head 101 completely, and thus complete the drilling installation operation of the anchorage nail. The first hanging hole 304 and the second hanging hole 305 are arranged to facilitate the threading of the orthodontic wire, the tension spring or the rubber chain.

[0084] When the anchorage nail needs to be removed, the anchorage nail head 101 is first limited by using a tool, and then the outer threaded column 301 is slid into the inside of the anchorage nail head 101 again by rotating the anchorage nail cap 103, and the top pressure block 502 is reset by the outer threaded column 301 in motion through the inner bolt 504 and the connecting shaft 503, the reset top pressure block 502 compresses the third spring 501 to make it compressed. When the top pressure block 502 is reset and separated from the pressure block 406, the pressure block 406 is preliminarily reset by the compressed second spring 407, and then the connecting plate 404 is reset by the compressed first spring 405 to reset the bone nail 402, so as to retract the bone nail 402 into the inside of the support sleeve 401, and then the anchorage nail cap 103 and the anchorage nail head 101 are rotated by using a tool at the same time, so that the anchorage nail rod 102 is removed from the jaw bone under the action of the thread, and thus the anchorage nail removal operation is completed.

[0085] When the anchorage nail is broken during the installation or removal operation, causing part of the anchorage nail rod 102 to remain in the jaw bone, the broken part of the anchorage nail is first removed from the jaw bone hole, so that the female threaded rod 602 in the anchorage nail rod 102 is exposed, and then a tool is inserted into the groove at one end of the female threaded rod 602, so that the female threaded rod 602 is rotated by rotating the tool, and the female threaded rod 602 is rotated by the female threaded hole 601 to cooperate with the thread formed in the jaw bone during the anchorage nail drilling to remove the anchorage nail rod 102.

[0086] Embodiment two

[0087] As shown in FIGS. 1-8, the embodiment of the present application further provides a self-drilling type anchorage nail with a mushroom head and a double-hole structure, which comprises an anchorage nail assembly 1 and a self-drilling mechanism 2, the anchorage nail assembly 1 comprises an anchorage nail head 101, an anchorage nail rod 102 and an anchorage nail cap 103;

[0088] The support nail rod 102 is fixedly connected to the bottom of the support nail head 101, the support nail cap 103 is arranged at the top of the support nail head 101, the self-drilling mechanism 2 is arranged on the outer side of the support nail rod 102, the double-hole connecting mechanism 3 is arranged between the support nail head 101 and the support nail cap 103, two locking mechanisms 4 are symmetrically arranged on the outer side of the support nail rod 102, the driving traction mechanism 5 is arranged between the support nail cap 103 and the support nail rod 102, the inner support mechanism 6 is arranged in the support nail rod 102, and the outer traction expansion mechanism 7 is arranged at the top of the support nail cap 103.

[0089] The self-drilling mechanism 2 is used to reduce the resistance during drilling of the support nail and increase the resistance during withdrawal of the support nail.

[0090] The double-hole connecting mechanism 3 is used to connect the support nail head 101 and the support nail cap 103 and provide support for the inside of the support 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.

[0091] The outer threaded column 301 is fixedly connected to the bottom of the support nail cap 103, the inner threaded groove 302 is arranged in the inside of the support 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 support nail head 101, and the second hanging hole 305 is arranged on the outer side of the outer threaded column 301.

[0092] The locking mechanism 4 is used to cooperate with the driving traction mechanism 5 to laterally extrude the jaw bone hole, thereby improving the anti-rotation performance of the support nail in the jaw bone.

[0093] The driving traction mechanism 5 is used to provide power for the locking mechanism 4 in cooperation with the double-hole connecting mechanism 3.

[0094] The inner support mechanism 6 is used to support the inside of the support nail rod 102 and provide an operable space in the inside of the support nail rod 102 when the support nail is broken.

[0095] The outer traction expansion mechanism 7 is used to expand the traction mode of the support nail cap 103 and improve the clinical operability of the support nail.

[0096] The difference between the embodiment one and the embodiment two is that the outer traction expansion mechanism 7 is an expansion threaded groove 702, the support nail cap 103 is a round pie shape, the expansion threaded groove 702 is arranged on the upper surface of the support nail cap 103, and the remaining structures are the same as those of the embodiment one.

[0097] By designing the anchorage nail cap 103 as a round pie shape to make the outer side of the anchorage nail cap 103 more smooth, by setting the expansion thread groove 702, so as to install other structures on the anchorage nail cap 103, and the bolt tool can be inserted into the expansion thread groove 702 to separately pull the anchorage nail cap 103 to rotate.

[0098] Embodiment three

[0099] As shown in FIGS. 1-9, the embodiment of the present application also provides 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, the anchorage nail assembly 1 comprising an anchorage nail head 101, an anchorage nail rod 102 and an anchorage nail cap 103;

[0100] Wherein, 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, the double-hole connecting mechanism 3 is arranged between the anchorage nail head 101 and the anchorage nail cap 103, the two locking mechanisms 4 are symmetrically installed on the outer side of the anchorage nail rod 102, the driving traction mechanism 5 is installed between the anchorage nail cap 103 and the anchorage nail rod 102, the inner support mechanism 6 is arranged in the anchorage nail rod 102, and the outer traction expansion mechanism 7 is arranged on the top of the anchorage nail cap 103;

[0101] Wherein, the self-drilling mechanism 2 is used to reduce the resistance when the anchorage nail drills and increase the resistance when it exits;

[0102] Wherein, the double-hole connecting mechanism 3 is used to connect the anchorage nail head 101 and the anchorage nail cap 103, provide support for the inside of the anchorage nail head 101, and set the double-hole structure in a staggered manner; the double-hole connecting mechanism 3 comprises an outer thread column 301, an inner thread groove 302, a first hanging hole 304 and a second hanging hole 305;

[0103] Wherein, the outer thread column 301 is fixedly connected to the bottom of the anchorage nail cap 103, the inner thread groove 302 is arranged in the inside of the anchorage nail head 101, the outer side wall of the outer thread column 301 is threadedly connected with the inner side wall of the inner thread 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 thread column 301;

[0104] Wherein, the locking mechanism 4 is used to cooperate with the driving traction mechanism 5 to laterally extrude the jaw hole, thereby improving the anti-rotation performance of the anchorage nail in the jaw;

[0105] Wherein, the driving traction mechanism 5 is used to provide power for the locking mechanism 4 in cooperation with the double-hole connecting mechanism 3;

[0106] 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.

[0107] 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.

[0108] The difference between the embodiment one and the embodiment two is that the outer traction expansion mechanism 7 is a flat slot 703, and the anchorage nail cap 103 is an outer hexagon pie shape.

[0109] The flat slot 703 is arranged in the middle of the upper surface of the outer hexagon pie-shaped anchorage nail cap 103, and the rest of the structure is the same as that of the embodiment one.

[0110] The outer shape of the anchorage nail cap 103 is designed as an outer hexagon pie shape, so as to reduce the height of the anchorage nail cap 103 as a whole, and the inner hexagon tool can be separately sleeved on the anchorage nail cap 103 or simultaneously sleeved on the anchorage nail cap 103 and the anchorage nail head 101, so as to unify the tools, and the flat slot 703 is arranged to cooperate with the flat tool to separately pull the anchorage nail cap 103 to rotate.

[0111] Embodiment four

[0112] As shown in FIGS. 1-10, the application also provides a self-drilling anchorage nail with a mushroom head and a double-hole structure, which comprises an anchorage nail assembly 1 and a self-drilling mechanism 2, and the anchorage nail assembly 1 comprises an anchorage nail head 101, an anchorage nail rod 102 and an anchorage nail cap 103.

[0113] 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, the 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, the driving traction mechanism 5 is arranged between the anchorage nail cap 103 and the anchorage nail rod 102, the inner support mechanism 6 is arranged in the inside of the anchorage nail rod 102, and the outer traction expansion mechanism 7 is arranged on the top of the anchorage nail cap 103.

[0114] The self-drilling mechanism 2 is used for reducing the resistance when the anchorage nail drills and increasing the resistance when the anchorage nail exits.

[0115] The double-hole connecting mechanism 3 is used for connecting the anchorage nail head 101 and the anchorage nail cap 103, providing support for the inside of the anchorage nail head 101, and arranging the double-hole structure 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.

[0116] 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 in threaded connection 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.

[0117] The locking mechanism 4 is used for cooperating with the driving traction mechanism 5 to perform lateral extrusion on the jaw hole, so that the anti-rotation performance of the anchorage nail in the jaw is improved.

[0118] The driving traction mechanism 5 is used for cooperating with the double-hole connecting mechanism 3 to provide power for the locking mechanism 4.

[0119] 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.

[0120] 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.

[0121] The difference from the first embodiment, the second embodiment and the third embodiment is that the outer traction expansion mechanism 7 is an inner triangular groove 704, and the anchorage nail cap 103 is a circular-arc outer hexagon pie shape.

[0122] The inner triangular groove 704 is arranged at the top of the circular-arc outer hexagon pie-shaped anchorage nail cap 103, and the remaining structures are the same as those in the first embodiment.

[0123] The shape of the anchorage nail cap 103 is designed as a circular-arc outer hexagon pie shape, so as to reduce the height of the anchorage nail cap 103 as a whole, and the top edge is designed to be smooth, so as to increase the comfort of use. The inner triangular groove 704 is arranged, so as to insert a triangular tool into the inner triangular groove 704 to drive the anchorage nail cap 103 to rotate. In addition, a inner hexagonal tool can be sleeved on the outside of the anchorage nail cap 103 and the anchorage nail head 101, so as to drive the anchorage nail cap 103 and the anchorage nail head 101 to rotate simultaneously.

[0124] Embodiment five

[0125] As shown in FIGS. 1-11, the present application also provides a self-drilling type anchorage nail with a mushroom head and a double-hole structure. The difference from the first embodiment, the second embodiment, the third embodiment and the fourth embodiment is that the outer diameters of the anchorage nail head 101 and the anchorage nail rod 102 are increased, and the length of the anchorage nail rod 102 is shortened. The specific structure is shown in FIG. 11, so as to select different specifications of anchorage nails according to actual needs. The remaining structures are the same as those in the first embodiment.

[0126] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, and these should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection 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), wherein, 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 internal support mechanism (6) is arranged in the anchorage nail rod (102), and an external traction expansion mechanism (7) is arranged on the top of the anchorage nail cap (103). 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), providing support for the inside of the anchorage nail head (101), and arranging the double-hole structure 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 bone hole, thereby improving the anti-rotation performance of the anchorage nail in the jaw bone. 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 internal 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.

2. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 1, wherein: The external 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. The self-drilling mechanism (2) comprises a double-circle chamfer portion (201), a self-drilling thread (202) and a cutting groove (203).

3. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 1, wherein: The double-circle chamfer portion (201) is arranged between the anchorage nail rod (102) and the anchorage nail head (101), the self-drilling thread (202) is arranged on the outer side wall of the anchorage nail rod (102), and the cutting groove (203) is arranged on the bottom of the outer side wall of the anchorage nail rod (102) and the self-drilling thread (202). 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 anchorage nail rod (102), and the bottom of the outer threaded column (301) is provided with a containing groove (81).

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

6. The self-drilling type anchorage nail with a mushroom head and a double-hole structure according to claim 3, wherein: The driving traction mechanism (5) comprises a third spring (501), a pressure block (502), a connecting shaft (503) and an internal screw (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 anchorage 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 screw (504) is in sliding connection with the inner side wall of the anchorage nail cap (103) and the outer threaded column (301), and one end of the internal screw (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, wherein: The internal support mechanism (6) comprises a close-thread hole (601) and a close-thread rod (602). The close-thread hole (601) is arranged at the bottom of the inner side wall of the anchorage nail rod (102), and the outer side wall of the close-thread rod (602) is in threaded connection with the inner side wall of the close-thread 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, wherein: The outer traction expansion mechanism (7) is a straight groove (701), the top of the anchorage nail cap (103) is in the shape of a mushroom head, the outer side wall at the bottom is in the shape of a hexagon, and the straight groove (701) is arranged at 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, wherein: The outer traction expansion mechanism (7) is an expansion threaded groove (702), the anchorage nail cap (103) is in the shape of a round cake, and the expansion threaded 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, wherein: The outer traction expansion mechanism (7) is a flat slot (703) or an inner triangular slot (704), and the anchorage nail cap (103) is an outer hexagonal pie or an outer hexagonal pie with a circular arc; The flat slot (703) is arranged in the middle of the upper surface of the outer hexagonal pie anchorage nail cap (103); The inner triangular slot (704) is arranged at the top of the outer hexagonal pie with a circular arc anchorage nail cap (103).

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