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CN-224206876-U - Femur intramedullary nail

CN224206876UCN 224206876 UCN224206876 UCN 224206876UCN-224206876-U

Abstract

The utility model discloses a femoral intramedullary nail which comprises a main nail and a locking nail, wherein the main nail is columnar, the main nail is provided with a guide section, the guide section is positioned at the top end of the main nail, the radian of the guide section is 15-20 degrees, the locking nail comprises a first locking nail and a second locking nail, the number of the first locking nail and the number of the second locking nail are multiple, the first locking nail is arranged at the top end of the main nail, the second locking nail is arranged at the bottom end of the main nail, and the first locking nail and the second locking nail are connected with screw threads of the main nail. The surgical incision avoids abductor muscle groups, can prevent ilium and abundant muscles and fat from affecting operation, reduces the requirement on a traction operating table, is convenient for doctors to operate, shortens the operation time, adopts threaded connection between the locking nails and the main nails, and has stable formed frame structure and can prevent complications such as loosening and cutting of intramedullary nails.

Inventors

  • SHI YONGXIN
  • HUANG YUXIN
  • GAO YUAN
  • LI BAOLIN
  • Chen Dixi
  • Shi Yichu

Assignees

  • 深圳大学附属华南医院

Dates

Publication Date
20260508
Application Date
20241018

Claims (5)

  1. 1. The femoral intramedullary nail is characterized by comprising a main nail (1) and a locking nail, wherein the main nail (1) is columnar, the main nail (1) is provided with a guide section, the guide section is positioned at the top end of the main nail (1), and the radian of the guide section is 15-20 degrees; The locking nails comprise first locking nails (2) and second locking nails (3), the number of the first locking nails (2) and the number of the second locking nails (3) are multiple, the first locking nails (2) are arranged at the top ends of the main nails (1), the second locking nails (3) are arranged at the bottom ends of the main nails (1), and the first locking nails (2) and the second locking nails (3) are in threaded connection with the main nails (1); The main nail (1) is hollow, a positioning locking head is arranged at the top end of the main nail (1), a first threaded hole and a second threaded hole are formed in the main nail (1), the first threaded hole and the second threaded hole penetrate through the main nail (1), and the first threaded hole and the second threaded hole are respectively in one-to-one correspondence with the first locking nail (2) and the second locking nail (3).
  2. 2. A femoral intramedullary nail according to claim 1, wherein the number of first locking nails (2) and second locking nails (3) is plural.
  3. 3. A femoral intramedullary nail according to claim 2, wherein two of said first locking nails (2) are arranged parallel to each other and two of said second locking nails (3) are arranged parallel to each other.
  4. 4. A femoral intramedullary nail according to claim 2, wherein one of said first locking nails (2) is arranged horizontally and the other of said first locking nails (2) is arranged downwards, and wherein said second locking nails (3) are arranged parallel to each other.
  5. 5. A femoral intramedullary nail according to claim 1, characterized in that the main nail (1) is hollow.

Description

Femur intramedullary nail Technical Field The utility model relates to the technical field of medical appliances, in particular to a femoral intramedullary nail. Background The femoral fracture is a clinically common fracture, the femoral intramedullary nail is the most commonly used implant for treating the femoral fracture at present, the existing femoral intramedullary nail is limited by the structure of the existing femoral intramedullary nail, the needle insertion points are the apices of the greater trochanters or pyriform fossa, the operation wounds of the needle insertion points are large, especially for obese patients, the operation is very difficult, the abductor muscle groups are required to be separated from the incision, the needle insertion points can be reached, abductor muscle groups such as gluteus medius can be damaged to different degrees, even if the fracture healing is very good for many patients, the postoperative lameness still occurs, and the literature report is up to 20%, so that the problems which bother clinicians and patients become. Disclosure of utility model To this end, the present utility model provides a femoral intramedullary nail to solve the above-mentioned problems of the prior art. In order to achieve the above object, the present utility model provides the following technical solutions: According to a first aspect of the utility model, a femoral intramedullary nail comprises a main nail and a locking nail, wherein the main nail is columnar, the main nail is provided with a guide section, the guide section is positioned at the top end of the main nail, and the radian of the guide section is 15-20 degrees; The locking nail comprises a first locking nail and a second locking nail, the number of the first locking nail and the number of the second locking nails are multiple, the first locking nail is arranged at the top end of the main nail, the second locking nail is arranged at the bottom end of the main nail, and the first locking nail and the second locking nail are connected with the screw threads of the main nail. Further, the main nail is hollow, a first threaded hole and a second threaded hole are formed in the main nail, the first threaded hole and the second threaded hole penetrate through the main nail, and the first threaded hole and the second threaded hole are respectively in one-to-one correspondence with the first locking nail and the second locking nail. Further, the number of the first locking nails and the number of the second locking nails are multiple. Further, the two first locking nails are arranged in parallel, and the two second locking nails are arranged in parallel. Further, one of the first locking nails is horizontally arranged, the other one of the first locking nails is downwards arranged, and the two second locking nails are mutually parallel. Further, the main spike is hollow. Further, a positioning locking head is arranged at the top end of the main nail. The utility model has the advantages that through the radian design of the guide section, the outer side of the greater trochanter can be used as a needle insertion point to insert the main nail, the incision can be arranged on the outer side wall of the greater trochanter during operation, the outer side of the greater trochanter is one of bone positioning marks of a human body, positioning points can be easily found for very strong and obese patients, the operation difficulty is reduced, the operation incision avoids abductor muscle groups, and the incision is carried out without muscle groups, thereby avoiding complications such as pain, lameness, weakness and the like caused by muscle group injury, the needle insertion point is deviated, the influence of ilium and abundant muscles and fat on operation can be prevented, the requirement on a traction operation table is reduced, the operation time is shortened, the operation related complications such as bleeding amount are reduced, the locking nails and the main nails are connected through threads, the formed frame structure is stable, and the complications such as loosening and cutting of the intramedullary nails can be prevented. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be derived from the drawings provided without undue effort. The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or t