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 ensured, and the bone fracture plate is ensured to play a role in stabilizing broken bone connection.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of orthopedic medical instrument technical field, especially bone plate support nail. BACKGROUND

[0002] As disclosed in patent application CN202321033641.8, the existing support nail capable of adjusting size includes the upper part of the screw, the lower part of the screw, a positioning pressure ring, the upper part of the screw includes a head positioned on the bone plate, an upper rod with external threads connected below the head, the lower part of the screw is a lower rod-shaped object with external threads and a lower threaded hole, the internal threads in the lower threaded hole of the lower rod-shaped object match the external threads of the upper rod, the positioning pressure ring is screwed on the upper rod, and the outer diameter of the positioning pressure ring is larger than the outer diameter of the lower rod-shaped object.

[0003] When in use, the positioning pressure ring is screwed on the upper rod, the position of the positioning pressure ring on the upper rod is determined according to the preset distance between the bone plate and the positioning pressure ring, then the upper rod is screwed into the lower threaded hole of the lower rod-shaped object, so that the positioning pressure ring is tightly close to the upper end surface of the lower rod-shaped object, thereby completing the assembly of the screw.

[0004] Although the prior art can flexibly adjust the size of the support nail according to actual needs and use it on the bone plate, the upper rod is only screwed into the lower threaded hole of the lower rod-shaped object, and the upper rod and the lower rod-shaped object are not tightly connected, so the support nail is prone to looseness, which leads to looseness between the bone plate and the support nail. SUMMARY

[0005] The utility model aims at providing a support nail that can overcome one or more of the above-mentioned shortcomings, which can conveniently adjust the size of the support nail and ensure the firm connection between the bone plate and the support nail, thereby ensuring that the bone plate can stabilize the broken bone and the bone plate support nail.

[0006] The bone plate support nail of the utility model is realized in the following manner: it comprises a support nail body, a positioning sleeve and an adjusting sleeve, the support 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 a cylindrical body and an outer convex ring arranged at the end of the cylindrical body, and the adjusting sleeve is a circular ring-shaped object with an inner diameter and an outer diameter matching those of the cylindrical body and a height much lower than that of the cylindrical body.

[0007] In use, according to the fracture condition, the broken bone is connected, and then the holes are drilled on the two sides of the fracture according to the holes of the bone plate, the support nail is passed through the bone plate from top to bottom, and the adjusting sleeve and the positioning sleeve are passed according to the distance between the bone plate and the broken bone, since the adjusting sleeve can be manufactured in multiple specifications, the height of each specification of the adjusting sleeve is different, the positioning sleeve can be matched with different adjusting sleeves to obtain different length combinations, the length of the adjusting sleeve plus the positioning sleeve is matched with the distance between the bone plate and the broken bone, the support nail passing through the bone plate is screwed into the hole of the fracture, the rotation screw is screwed, the positioning ring on the positioning sleeve is tightly abutted against the broken bone, and thus the positioning after the connection of the fracture is completed, in this way, the bone fixation plate can be located outside the skin to avoid the great trauma caused by the bone fixation plate located under the skin, and meanwhile, the bone plate can play a role in stably connecting the broken bone and guaranteeing the good healing effect after the connection of the fracture.

[0008] Since the support nail is tightly fixed between the bone plate and the broken bone, the connection is firm, the loosening does not occur, the connected broken bone is stable, and the healing is smoothly carried out.

[0009] Preferably, the screw head is a screw head with external threads. The screw head with external threads is adopted, the screw is screwed in the hole with internal threads of the bone plate through the screw head with external threads, the connection relationship between the support nail body and the bone plate is stable, and then the posture of the connected broken bone passing through the bone plate support nail is stable.

[0010] Compared with the prior art, the bone plate support nail has the advantages that the specification of the support nail can be conveniently adjusted, the connection between the bone plate and the support nail is firm, and the bone plate can play a role in stably connecting the broken bone. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structure schematic view of the bone plate support nail of the utility model;

[0012] Figure 2 It is a state view in use of the bone plate support nail of the utility model.

[0013] Mark explanation: A-support nail; 1-support nail body; 101-screw head; 102-threaded rod; 2-positioning sleeve; 201-circular ring-shaped cylinder; 202-outer convex circular ring; 3-adjusting sleeve; 4-broken bone; 5-bone plate; 6-hole; 7-skin. DETAILED DESCRIPTION

[0014] The bone plate support nail of the utility model will be further described in detail in combination with the drawings and embodiments:

[0015] For example, Figure 1As shown, the utility model bone plate support nail is realized as follows: a support nail body 1, a positioning sleeve 2, an adjusting sleeve 3, the support nail body 1 comprises a screw head 101 and a threaded rod 102 connected below the screw head 101, the diameter of the screw head 101 is larger than that of the threaded rod 102, the positioning sleeve 2 comprises a cylindrical body 201 and an outer convex ring 202 arranged at the end of the cylindrical body 201, the adjusting sleeve 3 is a circular ring with an inner diameter and an outer diameter matching those of the cylindrical body 201 and a height much lower than that of the cylindrical body 201, the adjusting sleeve 3 has multiple adjusting sleeves 3, each adjusting sleeve 3 has a different height, between 2-5mm.

[0016] Preferably, the screw head 101 is a screw head with external threads.

[0017] As shown in 1 and 2, in use, after the broken bone 4 is connected, holes are drilled on both sides of the broken bone 4 according to the holes 6 of the bone plate 5, the support nail A is passed through the bone plate 5 from top to bottom, and the adjusting sleeve 3 and the positioning sleeve 2 are respectively passed according to the distance between the bone plate 5 and the broken bone 4, since the adjusting sleeve 3 can be manufactured in multiple specifications, each adjusting sleeve 3 has a different height, and the positioning sleeve 2 can be matched 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, the support nail A passed through the bone plate 5 from top to bottom is screwed into the hole of the broken bone 4, the support nail body is rotated, the outer convex ring 202 on the positioning sleeve 2 is tightly attached to the broken bone 4, and thus the positioning after the broken bone connection is completed, in this way, the bone plate 5 can be located outside the skin 7 to avoid the large trauma caused by the bone plate 5 located below the skin 7, and at the same time, the bone plate 5 can play a role in stabilizing the connected broken bone and ensuring the good healing effect after the broken bone connection.

Claims

1. A bone plate bracket pin, characterized in that, The support nail body includes a screw head and a threaded rod connected below the screw head, the screw head has a diameter larger than that of the threaded rod, the positioning sleeve includes a cylindrical body and an outward convex ring arranged at the end of the cylindrical body, and the adjusting sleeve is a circular ring with an inner diameter and an outer diameter matching those of the cylindrical body and a height much lower than that of the cylindrical body.

2. The bone plate holder nail according to claim 1, wherein The screw head is a screw head with external threads.

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