CN215079496U

CN215079496U - Novel proximal femoral multidirectional locking intramedullary nail

Info

Publication number: CN215079496U
Application number: CN202120471163.3U
Authority: CN
Inventors: 龙安华; 韩大成; 王嘉龙; 贾梓超; 王雪飞; 张亚奎
Original assignee: Beijing Luhe Hospital
Current assignee: Beijing Luhe Hospital
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-12-10
Anticipated expiration: 2031-03-04

Abstract

The utility model provides a novel proximal femoral multidirectional locking intramedullary nail, which comprises a locking nail B with holes, a locking nail C with holes, a locking nail D with holes, an intramedullary nail head nail, a main nail and a distal locking nail; the nail comprises a main nail, a plurality of hole-shaped locking nails, a plurality of nail heads and a plurality of far-end locking nails, wherein the hole-shaped locking nails B, the hole-shaped locking nails C, the hole-shaped locking nails D, the intramedullary nail heads and the far-end locking nails penetrate through and are locked into the main nail and are sequentially arranged from top to bottom in the vertical direction, the horizontal angle between the hole-shaped locking nails C and the main nail can be locked into the main nail within the range of 90-130 degrees, the hole-shaped locking nails B and the hole-shaped locking nails D are respectively arranged on two sides of the hole-shaped locking nails C and are arranged at an angle of 30 degrees with the hole-shaped locking nails C, the intramedullary nail heads and the top ends of the main nail in the vertical direction are arranged at an included angle of 130 degrees, and the far-end locking nails are arranged at the far ends of the main nail and are arranged at an included angle of 100 degrees with the tip of the main nail. The utility model discloses with the interlocking of current thighbone near-end intramedullary nail near-end mainly through head nail and main nail, realized that fracture amalgamation macrostoma smashes the stable fixed of fracture case between the fixed tuberosity of fracture.

Description

Novel proximal femoral multidirectional locking intramedullary nail

Technical Field

The utility model relates to the field of medical treatment clinical, concretely relates to novel multidirectional locking intramedullary nail of thighbone near-end.

Background

Intertrochanteric femoral fractures accumulate in the area between the trochanter and the femur, accounting for about 50% of hip fractures, and occur primarily in osteoporotic populations. The treatment of intertrochanteric fracture by intra-operative fixation is the current gold standard, in particular to intramedullary nail minimally invasive surgery fixation. Most intertrochanteric femoral fractures (AO 31-A2/A3) usually involve the greater trochanter forming one or several fracture fragments. However, the current internal fixation devices lack effective fixation of the greater tuberosity, and complications such as bone fracture displacement and gluteal weakness can occur after the operation. The existing macrocarpon protection plate is mainly fixed in an anatomical locking steel plate mode, and an endophyte is additionally arranged outside an intramedullary nail, so that the operation wound is increased, and the bleeding and the operation time are increased.

Tibial plateau fractures are common fractures of injuries around the knee joint, and incision reduction internal fixation is the main treatment mode of the fractures. With the intensive research on the damage mechanism of the plant, the demand for personalized endophytes is increasingly prominent.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at can the fixed tuberosity of combining the comminuted fracture of tuberosity of the great tuberosity of wicresoft fracture and the fixed thighbone tuberosity of multi-angle locking nail interlocking, increase fracture pressure through locking the tail end, it is fixed that the multi-angle is realized in the nail design, combines the cable to sew up fixed gluteus medius stop.

In order to achieve the above purpose, the utility model provides a specific technical scheme as follows:

a novel proximal femoral multidirectional locking intramedullary nail is characterized by comprising a hole-containing locking nail 1, an intramedullary nail head nail 2, a main nail 3 and a distal locking nail 4, wherein the hole-containing locking nail 1 can be specifically a hole-containing locking nail B11, a hole-containing locking nail C12 and a hole-containing locking nail D13 and is a proximal three locking nails for fixing the fracture of the tuberosity; the main nail 3 is provided with a perforated lock nail B11, a perforated lock nail C12, a perforated lock nail D13, an intramedullary nail head nail 2 and a far-end lock nail 4 which penetrate through and are locked in the main nail 3 and are sequentially arranged from top to bottom in the vertical direction, the horizontal angle between the perforated lock nail C12 and the main nail 3 can be locked in the range of 90-130 degrees, the perforated lock nail B11 and the perforated lock nail D13 are respectively arranged on two sides of the perforated lock nail C12 and are arranged at an angle of 30 degrees with the perforated lock nail C12, the intramedullary nail head nail 2 is arranged at an included angle of 130 degrees with the top end of the main nail 3 in the vertical direction, and the far-end lock nail 4 is arranged at the far end of the main nail 3 and is arranged at an included angle of 100 degrees with the nail tip of the main nail 3.

The tail part of the lock nail 1 with the hole is thickened and comprises a lock nail hole 101, an auxiliary fixing hole 102, a nail tail hole 103, a rotation assisting groove 104, a sunken thread 105 and a nail tip 106; the nail tail hole 103 is located at the nail tail position of the lock nail with the hole 1, the hole 101 of the lock nail hole forms an included angle of 30 degrees with the nail body, four auxiliary fixing holes 102 are symmetrically arranged at the nail tail position of the lock nail with the hole 1 in pairs, the nail hole 101, the auxiliary fixing holes 102 and the nail tail hole 103 are communicated, a linear rotation assisting groove 104 is further arranged at the nail tail position of the lock nail with the hole 1, and the nail body is provided with the recessed thread 105.

A3.5 mm common locking screw can be placed into the through part of the locking hole 101 and the nail tail hole 103 to serve as a middle locking nail 5, multi-angle locking of the middle nail is achieved, and therefore stability of a fracture block is achieved.

The main nail 3 is provided with a plurality of nail holes, including a hole B301, a hole C302, a hole D303, a head nail hole 304 and a distal end hole 305.

The utility model relates to an intramedullary nail for fixing special type intertrochanteric fracture, the near-end intramedullary nail near-end of the existing femur mainly realizes the fixation of the fracture through the interlocking of a tail nail and a main nail. For the case of intertrochanteric fracture combined with large tuberosity comminuted fracture, the large tuberosity can not be effectively fixed, so the design realizes the effective fixation of the large tuberosity bone block by adding three locking nails at the near end of the main nail.

Drawings

FIG. 1 is a schematic view of the proximal femoral multidirectional locking intramedullary nail of the present invention;

FIG. 2 is a second schematic view of the proximal femoral multidirectional locking intramedullary nail of the present invention; (ii) a

FIG. 3 is a schematic view of the structure of the locking nail with holes of the multi-directional locking intramedullary nail of the proximal femur of the present invention;

FIG. 4 is a schematic view of the nail-in-nail structure of the multi-directional locking intramedullary nail with holes of the proximal femur of the present invention;

FIG. 5 is a schematic view of the main nail hole site structure of the proximal femoral multidirectional locking intramedullary nail of the present invention;

FIG. 6 is a schematic view showing the position of the proximal multi-directional locking intramedullary nail of the present invention in the femur;

in the figure: 1. a lock pin with a hole; 101. a lock pin hole; 102. auxiliary fixing holes; 103. nailing a tail hole; 104. a rotation-assisting groove; 105. a recessed thread; 106. nailing tips; 11 a lock pin B with a hole; 12 lock nails C with holes; 13 a lock pin D with a hole; 2. intramedullary nail tail nail; 3. a main nail; 301. b hole; 302. c hole; 303. d, holes; 304. a stud hole; 305. a distal end aperture; 4. a distal locking pin; 5. and locking the nail in the nail.

Detailed Description

The present invention is described in detail below with reference to the drawings and examples, but the present invention is not limited thereto.

As shown in fig. 1-2 and fig. 6, three interlocking screws are mainly added at the proximal end of the conventional proximal femoral intramedullary nail, and multi-angle locking of the proximal femoral bone block is formed by the nail-in-nail manner shown in fig. 3, so as to realize stabilization of the fracture block. And the fixing mode ensures that the tuberosity bone block and the main nail are connected into a whole and are firmly fixed.

The primary design requires that the proximal three screws avoid the intramedullary nail tail by diverging forward and backward, as shown in fig. 2, and apertured lock B11 and apertured lock D13 avoid the main nail 3 by diverging forward and backward. The perforated lock pin C12 is designed to be locked in at an angle of 90-130 degrees with the main pin in the middle of the perforated lock pin B11 and the perforated lock pin D13.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A novel proximal femoral multidirectional locking intramedullary nail is characterized by comprising a hole-containing locking nail (1), an intramedullary nail head nail (2), a main nail (3) and a distal locking nail (4), wherein the hole-containing locking nail (1) can be specifically a hole-containing locking nail B (11), a hole-containing locking nail C (12) and a hole-containing locking nail D (13) which are three locking nails used for fixing the fracture of the great trochanter at the proximal end; the nail is characterized in that the hole-shaped lock nail B (11), the hole-shaped lock nail C (12), the hole-shaped lock nail D (13), the intramedullary nail head nail (2) and the far-end lock nail (4) penetrate through and are locked into the main nail (3), and are sequentially arranged from top to bottom in the vertical direction, the hole-shaped lock nail C (12) and the main nail (3) can be locked into at a horizontal angle of 90-130 degrees, the hole-shaped lock nail B (11) and the hole-shaped lock nail D (13) are respectively arranged on two sides of the hole-shaped lock nail C (12) and the hole-shaped lock nail C (12) at an angle of 30 degrees, the intramedullary nail head nail (2) is arranged at an included angle of 130 degrees on the vertical direction with the top end of the main nail (3), and the far-end lock nail (4) is arranged at a far end of the main nail (3) and arranged at an included angle of 100 degrees with the nail tip of the main nail (3).

2. The novel proximal femoral multidirectional locking intramedullary nail according to claim 1, characterized in that the tail of the locking nail with hole (1) is thickened and comprises a locking nail hole (101), an auxiliary fixing hole (102), a nail tail hole (103), a rotation assisting groove (104), a concave thread (105) and a nail tip (106); nail tail hole (103) are located the nail tail position of foraminiferous staple (1), staple hole (101) hole is to being 30 contained angles with the nail body, the nail tail position of foraminiferous staple (1) still two bisymmetry is equipped with four assist solid hole (102), all communicate with each other between staple hole (101), assist solid hole (102) and nail tail hole (103), the nail tail position of foraminiferous staple (1) still is equipped with the helping of a style of calligraphy and revolves recess (104), and the nail body has sunken screw thread (105).

3. The novel proximal femoral multidirectional locking intramedullary nail of claim 2, wherein a common 3.5mm locking screw can be inserted into a through portion of the locking nail hole (101) and the nail tail hole (103) to serve as a middle locking nail (5), so that multi-angle locking of the middle locking nail is realized, and the stability of a fracture block is realized.

4. The novel proximal femoral multidirectional locking intramedullary nail according to claim 1, characterized in that a plurality of locking nail holes are provided on the main nail (3), including a B hole (301), a C hole (302), a D hole (303), a head nail hole (304) and a distal end hole (305).