CN219109698U

CN219109698U - Orthopedic bone plate with enhanced stability

Info

Publication number: CN219109698U
Application number: CN202223110263.7U
Authority: CN
Inventors: 郭常安; 李俊成
Original assignee: Zhongshan Hospital Fudan University
Current assignee: Zhongshan Hospital Fudan University
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-06-02
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses an orthopedic bone fracture plate for enhancing stability, which comprises a bone fracture plate body, wherein a plurality of first screw through holes are formed in the upper part of the bone fracture plate body, a row of second screw through holes are formed in the middle of the lower part of the bone fracture plate body. The orthopedic osteotomy plate can be used for fixing the osteotomy incision, can better adhere to the bone surface, reduces irritation to surrounding soft tissues as much as possible, enhances the stability of fixation with the bone surface, can perform rehabilitation exercise in early stage after operation, and reduces the risk of orthopedic failure.

Description

Orthopedic bone plate with enhanced stability

Technical Field

The utility model relates to an orthopedic bone fracture plate for enhancing stability, and belongs to the technical field of medical instruments.

Background

One of the common orthopedic diseases of middle-aged and elderly people in knee osteoarthritis often has various treatment means according to the age and severity of the patient. For patients who are not conservative, but are less aged or for whom joint replacement is not acceptable by themselves, a proximal high-level osteotomy may be used. The implant mainly used for the tibia inner side high-level osteotomy in the market at home and abroad at present is a Tomofix orthopedic osteotomy plate and a U-shaped osteotomy plate. As shown in fig. 1, a femur 8 is arranged above a tibia 9, a fibula 7 is arranged on the side surface of the tibia 9, and a cut 10 after osteotomy is arranged on the tibia 9. As shown in fig. 2, the bone plate body 1 of the Tomofix orthopedic osteotomy plate is fixed on the tibia 9 through bone nails passing through the first screw through holes 2, the movable holes 3 and the second screw through holes 4, a row of first screw through holes 2 at the upper part of the bone plate body 1 are positioned above the incision 10, a row of second screw through holes 4 at the lower part of the bone plate body 1 are positioned below the incision 10, the movable holes 3 are arranged between the first screw through holes 2 and the uppermost second screw through holes 4, and as only one row of second screw through holes 4 exist, the Tomofix orthopedic osteotomy plate has larger curvature of steel plates, which possibly leads to shaking of two sides of the lower part of the bone plate body 1 on the tibia 9, and poor adherence to the surface of the tibia 9 in operation; as shown in fig. 1 and 3, the bone plate body 1 of the U-shaped bone cutting plate is fixed on the tibia 9 through the bone nails 11, and two rows of screw through holes are formed in the lower portion of the bone plate body 1 of the U-shaped bone cutting plate, so that the transverse cross-sectional area of the U-shaped bone cutting plate is large, the tension of the postoperative skin margin is large, and the healing of skin is possibly not facilitated.

Disclosure of Invention

The utility model aims to solve the technical problems that: how to ensure the consistency of the osteotomy plate and the tibia surface without increasing the transverse cross-sectional area of the osteotomy plate.

In order to solve the technical problems, the technical scheme of the utility model provides an orthopedic bone fracture plate for enhancing stability, which comprises a bone fracture plate body, wherein a plurality of first screw through holes are formed in the upper part of the bone fracture plate body, a row of second screw through holes are formed in the middle of the lower part of the bone fracture plate body.

Preferably, at least one movable hole is arranged between the second screw through hole and the first screw through hole; the movable hole and the second screw through hole are arranged in a row; the movable hole is a long hole which can enable the bone nail to move in the movable hole.

Preferably, the plurality of first screw through holes are arranged in two rows up and down.

Preferably, the first screw through holes of the upper row and the lower row are staggered in sequence.

Preferably, the third screw through holes and the second screw through holes are sequentially arranged at intervals.

Preferably, each of the third screw through holes and the two adjacent second screw through holes corresponding to the third screw through hole are in an equilateral triangle structure.

Preferably, each of the third screw through holes and two adjacent movable holes corresponding to the third screw through hole or one movable hole and one second screw through hole corresponding to the third screw through hole or two adjacent second screw through holes corresponding to the third screw through hole are in equilateral triangle structures.

Preferably, the bone plate body comprises a main plate and a guard plate, wherein one end of the main plate is connected with the middle position of one side of the guard plate to form a T-shaped structure; the main board and the guard board are of an integrated structure; the part of the upper part of the bone plate body with the first screw through hole is a guard plate, and the guard plate is an arc-shaped concave structure matched with the proximal end of the tibia; the part of the lower part of the bone plate body with the second screw through hole is a main plate, and the main plate is attached to the distal surface of the tibia; the third screw through hole is arranged at one side edge of the main board.

When the proximal tibia high osteotomy is performed to treat knee osteoarthritis, the osteotomy incision is fixed by the orthopedic osteotomy plate, so that the proximal tibia high osteotomy plate can be better adhered to the bone surface, irritation to surrounding soft tissues is reduced as much as possible, the stability of fixation with the bone surface is enhanced, rehabilitation exercise can be performed early and later after operation, and the risk of orthopedic failure is reduced.

The guard plate is provided with the arc-shaped concave pits which are attached to the bone surface, so that stress concentration generated in operation is effectively dispersed, and the guard plate is better attached to the bone surface. The edges of the main plate, the guard plate and the wing plate are in a round blunt design, so that the irritation to surrounding tissues is reduced.

The utility model strengthens the fitting degree with the near-end bone surface by increasing the arc-shaped area of the guard plate, disperses stress concentration generated by fixation in operation, better fits the bone surface, and reduces the skin edge tension and the risk of orthopedic failure; by adding screw through holes on the side of the main board, stress concentration and anti-rotation effects are dispersed.

Drawings

FIG. 1 is a schematic view of a knee joint after proximal tibial osteotomy;

FIG. 2 is a schematic structural view of a prior art orthopedic bone plate;

FIG. 3 is a schematic view of a conventional U-shaped osteotomy plate;

fig. 4 is a schematic view of an orthopedic bone plate with enhanced stability.

Detailed Description

In order to make the utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

The terms "upper" and "lower" in this embodiment are used according to the positions in the drawings, and are merely for explaining the positional relationship of the respective constituent elements in the present utility model.

The utility model provides an orthopedic bone fracture plate for enhancing stability, which is used for gradually expanding an osteotomy end in a high-level osteotomy at a proximal end of tibia, as shown in fig. 4, and comprises a bone fracture plate body 1, wherein a plurality of first screw through holes 2 are arranged at the upper part of the bone fracture plate body 1, the plurality of first screw through holes 2 are arranged in two rows, the first screw through holes 2 in the upper row and the lower row are sequentially staggered, a row of second screw through holes 4 are arranged in the middle of the lower part of the bone fracture plate body 1, a plurality of side protruding blocks 6 are arranged at the outer side edge of the lower part of the bone fracture plate body 1, and a third screw through hole 5 is correspondingly arranged in each side protruding block 6. At least one movable hole 3 is arranged between the uppermost second screw through hole 4 and the lowermost first screw through hole 2, and the movable hole 3 and the second screw through hole 4 are arranged in a row.

The third screw through holes 5 and the second screw through holes 4 are sequentially arranged at intervals, and each third screw through hole 5 and two adjacent movable holes 3 corresponding to the third screw through hole or one adjacent movable hole 3 corresponding to the third screw through hole and one second screw through hole 4 or two adjacent second screw through holes 4 corresponding to the third screw through hole are of equilateral triangle structures.

In the embodiment, 3 first screw through holes 2 are respectively arranged in the upper row and the lower row of the first screw through holes 2; a row of second screw through holes 4 is provided with 4 second screw through holes 4; the movable holes 3 are provided with one. The first third screw through hole 5 near the proximal end of the tibia 9 (i.e., one third screw through hole 5 closest to the upper portion of the bone plate body 1) is in an equilateral triangle configuration with the movable hole 3 and the first second screw through hole 4 near the proximal end of the tibia 9 (i.e., one second screw through hole 4 closest to the upper portion of the bone plate body 1), and each of the remaining third screw through holes 5 and its corresponding adjacent two second screw through holes 4 are in an equilateral triangle configuration.

The bone plate body 1 comprises a main plate 12 and a guard plate 13, wherein one end of the main plate 12 is connected with the middle position of one side of the guard plate 13 to form a T-shaped structure. The main board 12 and the guard board 13 are integrally formed. The part of the upper part of the bone plate body 1 provided with the first screw through hole 2 is a guard plate 13, and the guard plate 13 is an arc-shaped concave structure matched with the proximal end of the tibia 9; the upper row of first screw through holes 2 on the bone plate body 1 are compression locking screw holes, and the lower row of first screw through holes 2 are screw holes. The portion of the bone plate body 1 with the second screw through hole 4 at the lower part is a main plate 12, and the main plate 12 is attached to the distal surface of the tibia 9. The movable hole 3 is a movable screw hole, namely a long hole (waist-shaped hole or communicated double-hole structure) which can enable the bone screw to move in the movable hole 3, and is used for finely adjusting the upper and lower positions of the main board 12 on the tibia 9, and the second screw through hole 4 and the third screw through hole 5 are both compression locking screw holes. Outside the main board 12 is a protruding screw through hole structure, i.e. a side bump 6.

The application process of the utility model is as follows:

after the proximal end of the tibia 9 is cut, the orthopedic bone fracture plate is fixed on the surface of the tibia 9, and when the orthopedic bone fracture plate is installed, the guard plate 13 is combined with the proximal end of the tibia 9 and is fixed by inserting bone nails into the first screw through holes 2, so that the double-flank-shaped structure of the guard plate 13 enhances the fitting degree with the bone surface of the tibia 9, and is beneficial to enhancing the stability of fixation. The main board 12 is inserted into the tibia 9 along the directions of two rows of screw through holes (namely the third screw through hole 5 and the second screw through hole 4) on the distal bone surface of the tibia 9 to be fixed in a bidirectional manner through bone nails, so that the main board is attached to the distal bone surface of the tibia 9 to fix the distal end of the tibia 9, the shake of two sides of the main board 12 on the tibia 9 is avoided, and the irritation to surrounding soft tissues is reduced as much as possible.

Wherein: the compression locking screw hole is a threaded fracture fixation device, and after the screw with the threaded head is screwed in, the steel plate becomes a (screw) angle fixation device. The orthopedic bone fracture plate can be matched and attached with the bone surface at a specific angle, and certain pressure is provided, so that the attachment is enhanced.

Screw holes are not threaded, and mainly fix the steel plate by the up-down pressure of the screw and the bone, and cannot be fixed at an additional angle.

Claims

1. The utility model provides an orthopedic bone fracture plate of reinforcing stability, includes bone plate body (1), the upper portion of bone plate body (1) is equipped with a plurality of first screw through-holes (2), the centre of bone plate body (1) lower part is equipped with a row of second screw through-holes (4), its characterized in that, the outside edge of bone plate body (1) lower part be equipped with a plurality of side lug (6), correspond in every side lug (6) and be equipped with a third screw through-hole (5).

2. An orthopaedic bone plate with enhanced stability according to claim 1, characterized in that at least one active hole (3) is provided between the second screw through hole (4) and the first screw through hole (2); the movable hole (3) and the second screw through hole (4) are arranged in a row; the movable hole (3) is a long hole which can enable the bone nail to move in the movable hole (3).

3. An orthopaedic bone plate for enhanced stability according to claim 1 or 2, wherein the first plurality of screw through holes (2) are arranged in two rows one above the other.

4. An orthopedic bone plate for enhancing stability as claimed in claim 3, characterized in that said first screw through holes (2) of upper and lower rows are staggered in sequence.

5. An orthopaedic bone plate for enhanced stability according to claim 1 or 2, wherein the third screw through hole (5) is spaced from the second screw through hole (4) in sequence.

6. An orthopaedic bone plate for enhanced stability according to claim 5, wherein each of said third screw through holes (5) and its corresponding adjacent two second screw through holes (4) are of equilateral triangle configuration.

7. An orthopedic bone plate for enhancing stability as claimed in claim 2, characterized in that each of said third screw through holes (5) and its corresponding adjacent two movable holes (3), or its corresponding adjacent one movable hole (3) and one second screw through hole (4), or its corresponding adjacent two second screw through holes (4) are each in an equilateral triangle structure.

8. The orthopedic bone plate for enhancing stability according to claim 1, wherein the bone plate body (1) comprises a main plate (12) and a guard plate (13), wherein one end of the main plate (12) is connected with the middle position of one side of the guard plate (13) to form a T-shaped structure; the main board (12) and the guard board (13) are of an integrated structure; the part of the upper part of the bone plate body (1) provided with the first screw through hole (2) is a guard plate (13), and the guard plate (13) is an arc-shaped concave structure matched with the proximal end of the tibia (9); the part of the lower part of the bone plate body (1) with the second screw through hole (4) is a main plate (12), and the main plate (12) is attached to the distal surface of the tibia (9); the third screw through hole (5) is arranged at one side edge of the main board (12).