CN212679238U

CN212679238U - Fracture fixation plate assembly

Info

Publication number: CN212679238U
Application number: CN201921750523.2U
Authority: CN
Inventors: 赵家殳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2021-03-12
Anticipated expiration: 2029-10-17

Abstract

The utility model provides a fracture fixing plate component, which comprises a main board, a plurality of first screw holes and a plurality of second screw holes, wherein the main board comprises a handle part and a board part which is transversely connected with the upper part of the handle part; the base plate comprises a through hole and a first screw hole which is correspondingly matched with the through hole, and a screw which is connected with the main plate and the base plate. Compared with the prior art, the utility model discloses the fixed of the mainboard of being more convenient for of fracture fixed plate subassembly just can make the operation more minimally invasive, can play the dual function of pressurization and support to the fracture piece.

Description

Fracture fixation plate assembly

Technical Field

The utility model relates to a bone internal fixation ware technical field especially relates to a fracture fixed plate subassembly of the outer side behind the tibial plateau, back ankle and radius distal end.

Background

Tibial plateau fracture, distal radius fracture and posterior ankle fracture are common clinical traumas in orthopedics department, and many surgical treatments are needed to hurt joint surfaces. Because the fracture position is deviated, the anatomical position is deep, the important great vessels and nerves of the lower limbs are arranged nearby, the direct posterior incision reduction internal fixation is implemented, the operation access is complex, the wound is large, the operable space is small, the operation difficulty is extremely high, and the injury of the vascular nerves is easily caused. Present general current steel sheet of adopting directly uses behind the manual type of moulding, firstly does not paste the clothes, and steel plate screw wears out the shin bone posterolateral border easily, and the effect is poor.

In the prior art, the steel plate needs to be placed into a body from a rear opening, and when the screw is screwed in, the screw cannot be placed due to shielding of tissues such as muscles and bones, so that the fracture steel plate is inconvenient to fix, and firm locking of the compression locking screw and the locking hole is difficult to achieve. And when the steel plate is taken out again after being fixed, the phenomenon of slipping is easily caused because the screws are difficult to screw out when the internal fixture is taken out due to the blocking of the achilles tendon, thereby causing great wound to patients.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art, providing a fracture fixing plate component which can be convenient for nail placement and fixation, and can make the operation more minimally invasive and play the dual functions of pressurization and support for the fracture block.

In order to achieve the above object, the utility model provides a fracture fixed plate subassembly, include:

a main plate including a shank portion extending in a longitudinal direction and a plate portion extending in a transverse direction; the handle part is sequentially provided with a plurality of through holes along the longitudinal central line, and the tail end of the handle part is provided with an insertion part; a plurality of first screw holes are sequentially formed in the plate part along the transverse center line;

the backing plate comprises a second screw hole correspondingly matched with the through hole; and a screw connecting the main plate and the backing plate. The main plate and the backing plate are connected and matched through the screws to realize fracture fixation. The through hole on the handle part is matched with the second screw hole on the backing plate to fix the fracture part, and the first screw hole on the plate part is matched with the screw to strengthen the fixation of the main plate to the bone.

Preferably, the plate portion and the transition portion between the plate portion and the handle portion are bent outward, that is, the side surfaces of the plate portion and the handle portion are curved to be fitted to the surface of a bone, so as to achieve better fitting and fixation with the bone surface.

Preferably, the handle is provided with a leather nail strip hole along the longitudinal central line direction, and the longitudinal central line of the leather nail strip hole is overlapped with the longitudinal central line of the through hole.

Preferably, the width of the insertion part is gradually reduced from top to bottom, and the thickness of the insertion part is gradually reduced. The arrangement of the insertion part is convenient for the main board to be arranged in the body of a patient during operation.

Preferably, the backing plate is in a shuttle shape with two thin ends and a thick middle. The fusiform arrangement is convenient for the backing plate to be inserted into the affected part.

Preferably, the diameter of the through hole is larger than that of the second screw hole.

Preferably, a plurality of corresponding positioning holes are arranged on the handle part and the backing plate.

Preferably, the positioning holes include a first main plate positioning hole, a second main plate positioning hole, and a third main plate positioning hole, which are located on the handle portion, and the positioning holes further include a first backing plate positioning hole and a second backing plate positioning hole, which are located on the backing plate and respectively correspond to the first main plate positioning hole and the second main plate positioning hole. The setting of locating hole provides interim fixed and location articular surface function, avoids the risk that the screw was beaten into the articular surface.

Preferably, the screw includes a locking nail cooperating with the first screw hole, the through hole and the second screw hole, and a cortical bone screw cooperating with the nail strip hole.

Preferably, the main plate and the backing plate are made of titanium alloy or stainless steel.

Therefore, the purposes of better fixing the main plate and enabling the operation to be more minimally invasive are achieved by arranging the base plate on the opposite side of the main plate and fastening and connecting the base plate through the screws.

Because above-mentioned technical scheme's application compares in prior art, the utility model provides a fracture fixed plate subassembly's beneficial effect has:

1. the positioning is more accurate, and the positioning difficulty during operation is reduced; when the main board placing area is difficult to dissect, or the main board is difficult to place and the screw cannot be placed due to the fact that the screw is shielded by tissues such as muscles and bones after the main board is placed, the main board can be placed and fixed through a channel which is formed by corresponding positioning holes and is connected with an opposite side base plate (the notch for placing the base plate is positioned on a simple interface without neurovascular);

2. the operation can be more minimally invasive, and the pain of a patient is reduced; one incision can complete 180 degrees of fixation, for example, an operation with complicated anatomy, such as front and back fracture, the fixation of the front is realized through the completed front single incision, and simultaneously, the backing plate is placed in the incision, so that the fixation of the back fracture can be completed only by inserting the small incision of the main plate at the back;

3. when the screw is tightened, the double effects of pressurization and lifting are simultaneously realized.

Drawings

FIG. 1 is a schematic view of a positive three-dimensional structure of a main plate of the fracture fixation plate assembly of the present invention;

FIG. 2 is a front view of a backing plate of the fracture fixation plate assembly of the present invention;

fig. 3 is a usage status diagram of the first embodiment of the fracture fixation plate assembly of the present invention;

FIG. 4 is a front view of a backing plate according to a second embodiment of the fracture fixation plate assembly of the present invention;

fig. 5 is a diagram of the second embodiment of the fracture fixation plate assembly of the present invention in use.

In the drawings: 1-main plate, 2-handle, 3-plate, 4-through hole, 5-first screw hole, 6-insert, 7-backing plate, 8-second screw hole, 9-strip nail hole, 101-first main plate positioning hole, 102-second main plate positioning hole, 103-third main plate positioning hole, 111-first backing plate positioning hole, 112-second backing plate positioning hole.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 3, the present invention provides a fracture fixation plate assembly, which includes a main plate 1, including a shank portion 2 extending along a longitudinal direction and a plate portion 3 extending along a transverse direction; the handle part 1 is sequentially provided with a plurality of through holes 4 along the longitudinal central line, and the tail end of the handle part 2 is provided with an insertion part 6; a plurality of first screw holes 5 are sequentially arranged on the plate part 3 along the transverse center line; the base plate 7 comprises a second screw hole 8 correspondingly matched with the through hole 4; and screws connecting the main board 1 and the backing plate 7. The main plate 1 is connected and matched with the backing plate 7 through screws to realize fracture fixation. The through hole 4 on the handle part 2 is matched with the second screw hole 8 on the backing plate 7 to fix the fracture part, and the first screw hole 5 on the plate part 3 is matched with a screw to strengthen the fixation of the main plate 1 to the bone. In the present embodiment, the diameter of the first screw hole 5 is equal to the diameter of the second screw hole 8 and fits the same screw, and in other embodiments, the diameters of the two screw holes can be different according to practical situations and fit screws with corresponding sizes.

As shown in fig. 3, the transition portion between the plate portion 3 and the handle portion 2 and the plate portion 3 is bent outward, i.e. the side surfaces of the plate portion 3 and the handle portion 2 are curved to fit the surface of the bone, so as to achieve better fitting and fixation with the surface of the bone. The handle 2 is provided with a strip hole 9 along the longitudinal center line (prior art, the structure and function of the strip hole are not described again), in this embodiment, the longitudinal center line of the strip hole 9 overlaps with the longitudinal center line of the through hole 4 and the longitudinal center line of the first screw hole 5 above the through hole 4. The width of the insertion portion 6 is gradually reduced from top to bottom, and the thickness is gradually reduced. The insertion part 6 is arranged to facilitate minimally invasive insertion of the main board 1 during surgery.

As shown in fig. 2, the shim plate 7 is in a shuttle shape, and as shown in fig. 3, in the embodiment, a corresponding position on the upper portion of the shim plate 7 forms a bending shape opposite to the main plate 1, that is, the shim plate 7 and the main plate 1 bend oppositely to form a fit, which is suitable for fracture fixation of bones with similar shapes, such as tibial plateau fracture. The fusiform arrangement facilitates minimally invasive insertion of the backing plate. The handle part 2 and the backing plate 7 are provided with a plurality of corresponding positioning holes. The diameter of the through hole 4 is larger than that of the second screw hole 8, so that a screw can conveniently pass through the through hole 4.

The positioning holes include a first main plate positioning hole 101, a second main plate positioning hole 102, and a third main plate positioning hole 103, which are located on the shank portion 2, and a first pad positioning hole 111, a second pad positioning hole 112, which are located on the pad 7, and correspond to the first main plate positioning hole 101 and the second main plate positioning hole 102, respectively. In this embodiment, there are 3 first screw holes 5 uniformly formed on the plate portion 3, and there are 2 third main board positioning holes 103 respectively formed above every two first screw holes 2. In this embodiment, a through hole 4 is disposed above the strip hole 9 of the leather nail, and a first main board positioning hole 101 is disposed between the through hole 4 and the first screw hole 5; two through holes 4 are uniformly arranged below the strip holes 9 of the leather nails, and second main board positioning holes 102 are arranged below the two through holes 4 and at the top of the insertion part 6. In other embodiments, all the positioning holes can be arranged at different positions according to actual requirements. The setting of locating hole provides interim fixed and location articular surface function, avoids the risk that the screw was beaten into the articular surface. The positioning holes are all Kirschner wire pinholes and play a role in guiding.

The screw comprises a locking nail (not shown in the prior art) cooperating with the first screw hole 5, the through hole 4 and the second screw hole 8, and a cortical bone screw (not shown in the prior art) cooperating with the nail strip hole 9. In the present embodiment, the locking nail is a locking nail with a diameter of 3.5 mm in the ankle screw system; in other embodiments, any locking or non-locking nail with a diameter of 2.7 mm to 3.5 mm may be used, depending on the actual situation. In the present embodiment, the diameter of the cortical screw is 3.5 mm, and in other embodiments, any one of the cortical screws with the diameter of 2.7 mm to 3.5 mm may be used according to the actual situation. In this embodiment, the through hole and the first screw hole 5 are both provided with counter bores, and the inner sides of the counter bores are provided with internal threads adapted to the locking threads on the counter bores on the upper portion of the locking nail (the counter bores and the internal threads are prior art and not shown in the figure). The matching in this way plays a role in locking the screw and making the screw difficult to unscrew autonomously. In this embodiment, the diameter of the second screw hole 8 on the backing plate 7 matches the diameter of the locking nail.

In the embodiment, the main plate 1 and the backing plate 7 are made of titanium alloy, and in other embodiments, other suitable materials such as stainless steel may be used.

The working principle is as follows: during operation backing plate 7 and mainboard 1 laminate respectively and place the offside back in the fracture department, through the locating hole that corresponds on backing plate 7 and the mainboard 1, utilize gram formula to fix a position it for second screw 8 on the backing plate 7 and the through-hole 4 one-to-one on the mainboard 1 penetrate locking nail from through-hole 4, pass the bone after with the 8 screw-thread fit of second screw that correspond. If the locking nail is screwed continuously, the effect of lifting the main board 1 can be achieved under the condition that the purpose of pressurizing the backing plate 7 is achieved, wherein the tail end of the locking nail does not penetrate through the outer surface of the second screw hole 8 so as to avoid damaging tissues covered on the backing plate 7; meanwhile, according to actual requirements, a locking nail and a cortical bone screw which are matched with each other are respectively drilled into the long nail hole 9 and the first screw hole 5.

Example II

As shown in fig. 4 and 5, in the present embodiment, the backing plate 7 is shaped like a flat shuttle, and compared with the first embodiment, the top of the backing plate 7 in the present embodiment has one less second screw hole 8, except that other parts of the present embodiment are the same as the first embodiment. In other embodiments, the number of the second screw holes 5 in the shim plate 7 may be increased or decreased according to the severity of the fracture site.

The embodiment can be used for fracture fixation of bones with flat and straight shapes, such as tibial bodies.

Because above-mentioned technical scheme's application, compare in prior art, the utility model provides a fracture fixed plate subassembly can be convenient for put the nail and fix and make the operation more wicresoft.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A fracture fixation plate assembly, comprising:

a main plate (1) including a shank portion (2) extending in a longitudinal direction and a plate portion (3) extending in a transverse direction; a plurality of through holes (4) are sequentially arranged on the handle part (2) along the longitudinal central line, and an insertion part (6) is arranged at the tail end of the handle part (2); a plurality of first screw holes (5) are sequentially formed in the plate part (3) along the transverse center line;

the backing plate (7) comprises a second screw hole (8) correspondingly matched with the through hole (4); and a screw connecting the main plate (1) and the backing plate (7).

2. The fracture fixation plate assembly of claim 1, wherein: the plate part (3) and the transition part between the plate part (3) and the handle part (2) are bent outwards.

3. The fracture fixation plate assembly of claim 1, wherein: the handle part (2) is provided with a leather nail strip hole (9) along the direction of a longitudinal central line, and the longitudinal central line of the leather nail strip hole (9) is overlapped with the longitudinal central line of the through hole (4).

4. The fracture fixation plate assembly of claim 1, wherein: the width of the insertion part (6) is gradually reduced from top to bottom, and the thickness is gradually reduced.

5. The fracture fixation plate assembly of claim 1, wherein: the backing plate (7) is in a shuttle shape with thin two ends and thick middle, and the backing plate (7) is arranged on the base.

6. The fracture fixation plate assembly of claim 1, wherein: the diameter of the through hole (4) is larger than that of the second screw hole (8).

7. The fracture fixation plate assembly of claim 1, wherein: the handle part (2) and the backing plate (7) are provided with a plurality of corresponding positioning holes.

8. The fracture fixation plate assembly of claim 7, wherein: the positioning holes comprise a first main plate positioning hole (101), a second main plate positioning hole (102) and a third main plate positioning hole (103), wherein the first main plate positioning hole and the second main plate positioning hole are located on the handle portion (2), the third main plate positioning hole is located on the plate portion (3), and the first base plate positioning hole (111) and the second base plate positioning hole (112) are located on the base plate (7) and correspond to the first main plate positioning hole (101) and the second main plate positioning hole (102) respectively.

9. The fracture fixation plate assembly of claim 3, wherein: the screw comprises a locking nail matched with the first screw hole (5), the through hole (4) and the second screw hole (8), and a cortical bone screw matched with the leather nail strip hole (9).

10. The fracture fixation plate assembly of claim 1, wherein: the main plate (1) and the backing plate (7) are made of titanium alloy or stainless steel materials.