Bone fracture plate support nail

Abstract

A bone fracture plate support nail relates to the technical field of orthopedic medical instruments and comprises a support nail body, a positioning sleeve and an adjusting sleeve, the support nail body comprises a screw head and a threaded rod connected to the lower portion of the screw head, the diameter of the screw head is larger than that of the threaded rod, and the positioning sleeve comprises a circular-ring-shaped barrel and an outwards-protruding circular ring arranged at the end of the circular-ring-shaped barrel. The inner diameter and the outer diameter of the adjusting sleeve are matched with the inner diameter and the outer diameter of the circular-ring-shaped cylinder body, and the height of the adjusting sleeve is far lower than that of the circular-ring-shaped cylinder body. Compared with the prior art, the bone fracture plate has the advantages that the specification of the support nail can be conveniently adjusted, meanwhile, firm connection between the bone fracture plate and the support nail can be guaranteed, and the bone fracture plate is guaranteed to play a role in stabilizing broken bone connection.

Description

Technical Field

[0001] The invention relates to the technical field of orthopedic medical devices, in particular to a bone plate bracket nail. Background Art

[0002] As disclosed in patent application CN202321033641.8, the existing adjustable size bracket nail includes an upper part of a screw, a lower part of a screw, and a positioning pressure ring. The upper part of the screw includes a head positioned on the bone plate, an upper rod with an external thread connected below the head, and the lower part of the screw is a lower rod with an external thread and a lower threaded hole. The internal thread in the lower threaded hole of the lower rod matches the external thread of the upper rod. The positioning pressure ring is screwed onto the upper rod, and the outer diameter of the positioning pressure ring is larger than the outer diameter of the lower rod. When in use, screw the positioning pressure ring onto the upper rod, determine the position of the positioning pressure ring on the upper rod according to the preset distance between the bone plate and the positioning pressure ring, then screw the upper rod into the lower threaded hole of the lower rod, so that the positioning pressure ring is close to the upper end surface of the lower rod, thereby completing the assembly of the screw; Although the existing technology can flexibly adjust the specifications of the bracket nail according to actual needs and use it on the bone plate, since the upper rod is only screwed into the lower threaded hole of the lower rod, the upper rod and the lower rod are not tightly connected. Therefore, they are easy to loosen, causing the bone plate and the bracket nail to also loosen easily. Summary of the Invention

[0003] The purpose of the present invention is to provide a bone plate bracket nail that can overcome one or more of the above-mentioned shortcomings, which can not only facilitate the adjustment of the specifications of the bracket nail, but also ensure a firm connection between the bone plate and the bracket nail, ensuring that the bone plate plays a role in stabilizing the connection of broken bones.

[0004] The bone plate bracket nail of the present invention is implemented as follows: it includes a bracket nail body, a positioning sleeve, and an adjustment sleeve. The bracket nail body includes a screw head and a threaded rod connected below the screw head. The diameter of the screw head is larger than the diameter of the threaded rod. The positioning sleeve includes an annular cylinder and an outward convex ring arranged at the end of the annular cylinder. The adjustment sleeve is an annular object whose inner diameter and outer diameter match the inner diameter and outer diameter of the annular cylinder and whose height is much lower than that of the annular cylinder.

[0005] During use, after the broken bones are connected according to the fracture situation, holes are drilled on both sides of the fracture according to the perforations of the bone plate, the bracket nails pass through the bone plate from top to bottom, and the adjustment sleeve and the positioning sleeve are respectively put on according to the distance between the bone plate and the broken bone. Since the adjustment sleeve can be manufactured into various specifications, the height of the adjustment sleeve of each specification is different, and the positioning sleeve can be combined with different adjustment sleeves to obtain different length combinations, so that the length of the adjustment sleeve plus the positioning sleeve matches the distance between the bone plate and the broken bone, the bracket nails passing through the bone plate from above are screwed into the perforations of the fracture, and the screws are rotated to make the positioning ring on the positioning sleeve close to the broken bone, thereby completing the positioning after the fracture is connected. In this way, the fracture fixation plate can be located outside the skin to avoid the large trauma caused when the fracture fixation plate is located under the skin. At the same time, the bone plate can play a role in firmly connecting the fracture and ensuring the good healing effect after the fracture is connected. Since the bracket nails are used to fix the adjustment sleeve and the positioning sleeve between the bone plate and the broken bone, the connection is firmly fixed without loosening, ensuring the stability of the broken bone after connection and the smooth healing process.

[0006] Preferably, the screw head is a screw head with external threads. By using the screw head with external threads, the screw is screwed into the through-hole with internal threads of the bone plate through the screw head with external threads, so that the connection between the bracket nail body and the bone plate is stable, and the posture of the broken bone after being connected by the bone plate bracket nail is stabilized.

[0007] Compared with the existing technology, the present invention has the advantages of being able to conveniently adjust the specifications of the bracket nails, and at the same time, ensuring a firm connection between the bone plate and the bracket nails, thereby ensuring that the bone plate plays a role in stabilizing the fractured bone connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic structural diagram of the bone plate support nail of the present invention; Figure 2 This is a state diagram of the bone plate support nail of the present invention when it is in use.

[0009] Explanation of reference numerals: A-bracket nail; 1-bracket nail body; 101-screw head; 102-threaded rod; 2-positioning sleeve; 201-annular cylinder; 202-outer convex ring; 3-adjusting sleeve; 4-broken bone; 5-bone plate; 6-perforation; 7-skin. DETAILED DESCRIPTION

[0010] The bone plate support nail of the present invention is now described in further detail with reference to the accompanying drawings and embodiments: like Figure 1As shown, the bone plate bracket nail of the present invention is implemented as follows, including a bracket nail body 1, a positioning sleeve 2, and an adjustment sleeve 3. The bracket nail body 1 includes a screw head 101 and a threaded rod 102 connected to the bottom of the screw head 101. The diameter of the screw head 101 is larger than the diameter of the threaded rod 102. The positioning sleeve 2 includes an annular cylinder 201 and an outward convex ring 202 arranged at the end of the annular cylinder 201. The adjustment sleeve 3 is an annular object whose inner diameter and outer diameter match the inner diameter and outer diameter of the annular cylinder 201 and whose height is much lower than the annular cylinder 201. There are multiple adjustment sleeves 3, and the height of each adjustment sleeve 3 is different, ranging from 2 to 5 mm.

[0011] Preferably, the screw head 101 is a screw head with external threads.

[0012] When the shank 5 is in the downward direction, the adjusting sleeve 3 and the positioning sleeve 2 are respectively put on according to the distance between the shank 5 and the broken bone 4. As shown in 1 and 2, when in use, according to the fracture situation, after the broken bone 4 is connected, holes are drilled on both sides of the broken bone 4 according to the perforations 6 of the bone plate 5, and the bracket nail A passes through the bone plate 5 from top to bottom, and the adjusting sleeve 3 and the positioning sleeve 2 are respectively put on according to the distance between the bone plate 5 and the broken bone 4. Since the adjusting sleeve 3 can be manufactured into various specifications, the height of the adjusting sleeve 3 of each specification is different, and the positioning sleeve 2 can be combined with different adjusting sleeves 3 to obtain different length combinations, so that the length of the adjusting sleeve 3 plus the positioning sleeve 2 matches the distance between the bone plate 5 and the broken bone 4, and the bracket nail A passing through the bone plate 5 from above is screwed into the perforations of the broken bone 4, and the bracket nail body is rotated so that the outer convex ring 202 on the positioning sleeve 2 is close to the broken bone 4, thereby completing the positioning after the fracture connection. In this way, the bone plate 5 can be located outside the skin 7 to avoid the large trauma caused when the bone plate 5 is located under the skin 7. At the same time, the bone plate 5 plays a role in stabilizing the connection of the fracture and ensuring the good healing effect after the fracture connection.

Claims

1. A bone plate support nail, characterized in that: It includes a bracket nail body, a positioning sleeve, and an adjustment sleeve. The bracket nail body includes a screw head and a threaded rod connected under the screw head. The diameter of the screw head is larger than the diameter of the threaded rod. The positioning sleeve includes an annular cylinder and an outward convex ring arranged at the end of the annular cylinder. The adjustment sleeve is an annular object whose inner diameter and outer diameter match the inner diameter and outer diameter of the annular cylinder and whose height is much lower than that of the annular cylinder.

2. The bone plate bracket nail according to claim 1, characterized in that: A screw head is a screw head with external threads.

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