CN219147858U

CN219147858U - Rear ankle fracture internal fixation anatomical fork steel plate

Info

Publication number: CN219147858U
Application number: CN202222685545.3U
Authority: CN
Inventors: 田康; 许璐; 张仕; 李赞; 付丁丁
Original assignee: Baoding Kangqiang Medical Instrument Co ltd
Current assignee: Baoding Kangqiang Medical Instrument Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-06-09
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses an internal fixation anatomic type fork steel plate for posterior ankle fracture, which comprises a steel plate main body, wherein the steel plate main body is a strip-shaped steel plate, the cross section of the steel plate main body is an arc-shaped cross section, the lower end of the steel plate main body is extended to two sides to form a far-end expansion part, the upper part of the steel plate main body is provided with a strip-shaped sliding hole, a plurality of first threaded holes for connecting locking screws are arranged below the sliding hole, a plurality of second threaded holes which are transversely arranged and are used for connecting the locking screws are arranged on the far-end expansion part of the steel plate, an opening groove which is communicated with the second threaded holes is formed in the steel plate main body, and the width of the opening groove is smaller than the diameter of the second threaded holes. According to the utility model, the anatomical fork steel plate is fixed in the rear ankle fracture, the integral prefabrication form of the ventral surface is matched with the anatomical structure form of the rear ankle, and the steel plate is tightly attached to the rear ankle, so that the fixing strength is enhanced. The open slot is convenient for the steel plate open slot to be accurately placed into the fracture part along the Kirschner wire after the fracture of the rear ankle is fixed, thereby shortening the operation time and reducing the damage to surrounding normal soft tissues.

Description

Rear ankle fracture internal fixation anatomical fork steel plate

Technical Field

The utility model relates to the technical field of orthopedic medical instruments, in particular to an internal fixation anatomic type fork steel plate for a rear ankle fracture.

Background

The rear ankle fracture is a common injury of the ankle joint, three methods mainly exist at the present stage of treatment of the rear ankle fracture, namely plaster fixation, lag screw fixation and steel plate fixation, and in general, when the rear ankle fracture is smaller than 1/4 of the tibial articular surface and no displacement is caused, a conservative treatment method such as plaster fixation and the like can be adopted, so that a good treatment effect can be achieved on the premise of not increasing new wounds. However, when the range of the posterior ankle fracture reaches or exceeds 1/4 of the size of the distal tibial articular surface or there is significant displacement, the surgical approach of lag screw and plate fixation should be used.

The internal fixation operation of the rear ankle fracture usually adopts a bone fracture plate and screws to fix the rear ankle fracture. The existing bone fracture plate is a strip-shaped steel plate made of titanium alloy, the ventral surface (namely the surface in contact with bones) of the bone fracture plate is a flat surface, and because the anatomical structure of the rear ankle bone is not a plane, the strip-shaped plate and the ventral flat surface bone fracture plate are required to be bent in use so that the bone fracture plate is closely attached to the rear ankle, however, the fracture condition is easy to occur under the condition that the steel plate is bent back and forth. In another case, the distal ends of the bone fracture plates for treating the postankle fracture at present are all closed round holes, and when in operation, after the Kirschner wire is temporarily fixed for the postankle fracture after being reset, the Kirschner wire is sleeved into the closed steel plate threaded holes from outside the body, and then the steel plate can be put into the fracture part, so that the current situation causes various problems of the postankle fracture operation using the steel plate, such as complicated operation, prolonged operation time, increased damage to normal tissues of the fracture part and the like.

Therefore, the utility model provides the rear ankle fracture internal fixation anatomic type fork steel plate which aims at the problems existing at present.

Disclosure of Invention

The utility model aims to provide an anatomical fork steel plate for internal fixation of a rear ankle fracture, which has good fitting degree between a prefabricated arc on the ventral surface and a bone surface, and an open slot is arranged at the far end, so that the steel plate can be conveniently inserted into a Kirschner wire after the rear ankle fracture is fixed.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model discloses a rear ankle fracture internal fixation anatomical fork steel plate which comprises a steel plate main body, wherein the steel plate main body is a strip-shaped steel plate, the cross section of the steel plate main body is an arc-shaped cross section, the lower end of the steel plate main body is extended to two sides to form a far-end expansion part, the upper part of the steel plate main body is provided with a strip-shaped sliding hole, a plurality of first threaded holes for connecting locking screws are arranged below the sliding hole, a plurality of second threaded holes which are transversely arranged and used for connecting the locking screws are arranged on the far-end expansion part of the steel plate, the lower end of the far-end expansion part of the steel plate is provided with an open slot communicated with the second threaded holes, and the width of the open slot is smaller than the diameter of the corresponding second threaded hole.

Further, the number of the second threaded holes is three, one second threaded hole is arranged on the middle line in the middle, and the other two second threaded holes are symmetrically arranged on two sides of the middle line.

Further, the height of the second threaded holes in the middle is larger than that of the second threaded holes on the two sides, and the length of the open slot in the middle is larger than that of the open slot on the two sides.

Further, the length direction of the sliding hole is arranged along the long axis direction of the steel plate main body.

Further, a plurality of first threaded holes are centrally arranged and located right below the sliding holes.

Further, the width of the sliding hole is 3.5 mm, and the inner diameter specification of the first threaded hole is 3.5 mm.

Further, the number of the second threaded holes is two, and the two second threaded holes are symmetrically arranged on two sides of the central line.

Further, the distal end extension portion of the steel plate is curved toward the ventral surface of the steel plate body.

Further, the second threaded hole has an inner diameter of 3.5 mm, and the open slot has a width of 2.0 mm.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the rear ankle fracture internal fixation anatomic type fork steel plate, the cross section of the steel plate main body is an arc-shaped cross section, and the bottom is integrally connected with the extended distal end extension part, so that the steel plate can be better attached to the rear ankle fracture surface, the fracture fixation reliability is enhanced, and repeated bending in an orthopedics operation is avoided. Through seting up the open slot at the lower extreme of distal end extension, the steel sheet of being convenient for inserts on the temporarily fixed kirschner wire in the open slot, the open slot is along selecting the insertingly the accurate fixed position of installing of kirschner wire direction has made things convenient for the insertion and the removal of steel sheet. According to the utility model, the anatomical fork steel plate is fixed in the rear ankle fracture, the fit degree between the prefabricated arc on the ventral surface and the bone surface is good, and meanwhile, the open slot is arranged at the far end, so that the steel plate can be conveniently inserted and removed.

In addition, through setting up the second screw hole quantity of distal end extension into three and transversely symmetrically arrange, the ankle bone of being convenient for reliably fix after expands the end, the position of open slot sets up with the second screw hole is corresponding, is convenient for cooperate to insert or shift out the steel sheet. The sliding hole is arranged in the middle of the upper part of the steel plate main body, so that the upper and lower positions of the rear ankle fracture internal fixation anatomical fork steel plate can be adjusted slightly up and down before the standard screw is installed and is not screwed, and the accuracy of the rear ankle fracture fixation is ensured; the upper parts of the rear ankle bones are locked and fixed through the plurality of first threaded holes, so that the integral firm and reliable connection of the fracture is ensured. The steel plate far-end expansion part is slightly bent towards the ventral surface of the steel plate main body, so that the steel plate can be better attached to the rear ankle bone surface, the structural form of the steel plate and the rear ankle bone is completely matched, and the stimulation to surrounding tissues is reduced.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic view of a front view structure of an internal fixation anatomic yoke steel plate for a posterior ankle fracture;

FIG. 2 is a schematic perspective view of an internal fixation anatomic yoke steel plate for a posterior ankle fracture;

FIG. 3 is a schematic view of another perspective view of an anatomic plate for fixation of a posterior ankle fracture according to the present utility model;

fig. 4 is a side view of another embodiment of the present utility model.

Reference numerals illustrate: 1. a steel plate main body; 2. a distal extension; 3. a sliding hole; 4. a first threaded hole; 5. a second threaded hole; 6. an open slot.

Detailed Description

The utility model provides an anatomical fork steel plate for internal fixation of a rear ankle fracture, which has good fitting degree between a prefabricated arc on the ventral surface and a bone surface, and is provided with an open slot at the far end, so that the steel plate can be conveniently inserted and removed during the fixation of the rear ankle.

The following description of the embodiments of the present utility model will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "back side", "belly side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to the drawings, FIG. 1 is a schematic view of a front view structure of an internal fixation anatomic fork steel plate for a rear ankle fracture according to the present utility model; FIG. 2 is a schematic perspective view of an internal fixation anatomic yoke steel plate for a posterior ankle fracture; FIG. 3 is a schematic view of another perspective view of an anatomic plate for fixation of a posterior ankle fracture according to the present utility model; fig. 4 is a side view of another embodiment of the present utility model.

In one embodiment, as shown in fig. 1 to 3, a rear ankle fracture internal fixation anatomic fork steel plate comprises a steel plate main body 1, wherein the steel plate main body 1 is a strip-shaped steel plate, the cross section of the steel plate main body 1 is an arc-shaped cross section, and the lower end of the steel plate main body 1 is formed by extending to two sides to form a distal end expansion part 2. The bottom end of the distal end expansion part 2 is arc-shaped, and the top end of the steel plate main body 1 is also arc-shaped. The upper portion of the steel plate main body 1 is provided with a strip-shaped sliding hole 3, a plurality of first threaded holes 4 used for being connected with locking screws are arranged below the sliding hole 3, a plurality of second threaded holes 5 used for being connected with the locking screws are arranged on the steel plate far-end expanding portion 2 in a transverse arrangement mode, an open slot 6 communicated with the second threaded holes 5 is arranged at the lower end of the steel plate far-end expanding portion 2, and the width of the open slot 6 is smaller than the diameter of the corresponding second threaded holes 5.

Through the distal end extension portion 2 with steel sheet main part 1 cross section for arc cross section and bottom body coupling extension, can be better with the laminating of back ankle bone face, the fixed reliability of fracture has been strengthened, has avoided bending repeatedly in the orthopedics operation. By providing the open slot 6 at the lower end of the distal end expansion part 2, the steel plate is conveniently inserted into the open slot 6 on the temporarily fixed kirschner wire, the open slot 6 is accurately installed at the fracture fixation position along the direction of the inserted kirschner wire, and the insertion and removal of the steel plate are facilitated. According to the utility model, the anatomical fork steel plate is fixed in the rear ankle fracture, the fit degree between the prefabricated arc on the ventral surface and the bone surface is good, and meanwhile, the open slot is arranged at the far end, so that the steel plate can be conveniently inserted and removed.

In a specific embodiment of the present utility model, as shown in fig. 1 to 3, the number of the second threaded holes 5 is three, one second threaded hole 5 is centrally arranged on the midline, and the other two second threaded holes 5 are symmetrically arranged on both sides of the midline. The number of the open grooves 6 is also three and the upper ends are correspondingly communicated with the three second threaded holes 5.

Specifically, as shown in fig. 1 to 3, the height of the center second screw hole 5 is larger than that of the both side second screw holes 5, and the length of the center open groove 6 is longer than that of the both side open grooves 6.

Specifically, as shown in fig. 1 to 3, the second screw hole 5 has an inner diameter of 3.5 mm, and the open groove 6 has a width of 2.0 mm. Corresponding Kirschner wires with diameters between 1 and 2 mm are used for temporary fixation.

Through setting up the second screw hole 5 quantity of distal end extension 2 to three and transversely symmetrical the arranging, the ankle bone of being convenient for reliably fix the back expands the end, the position of open slot 6 and the corresponding setting of second screw hole 5 are convenient for cooperate to insert or shift out the steel sheet.

In one embodiment of the present utility model, as shown in fig. 1 to 3, the longitudinal direction of the slide hole 3 is set along the longitudinal direction of the steel plate body 1.

Specifically, as shown in fig. 1 to 3, two first screw holes 4 are provided centrally and directly below the slide hole 3.

Specifically, as shown in fig. 1 to 3, the width of the slide hole 3 is 3.5 mm, and the inner diameter of the first screw hole 4 is 3.5 mm.

The sliding hole 3 is arranged in the middle of the upper part of the steel plate main body 1, so that the upper and lower positions of the rear ankle fracture internal fixation anatomical fork steel plate can be adjusted slightly up and down before the standard screw is installed and is not screwed, and the accuracy of the rear ankle fracture fixation is ensured; the upper part of the rear ankle bone is locked and fixed through a plurality of first threaded holes 4, so that the integral firm and reliable connection of the fracture is ensured.

In a specific embodiment of the present utility model, the number of the second threaded holes 5 is two, and the two second threaded holes 5 are symmetrically arranged at two sides of the center line. The number of the open grooves 6 is two and the positions of the open grooves correspond to the second screw holes 5.

In one embodiment of the present utility model, as shown in fig. 4, the distal end expansion portion 2 of the steel plate is curved toward the ventral surface of the steel plate body.

The steel plate far-end expansion part 2 is slightly bent towards the ventral surface of the steel plate main body, so that the steel plate can be better attached to the rear ankle bone surface, the structural form of the steel plate and the rear ankle bone is completely matched, and the stimulation to surrounding tissues is reduced.

The utility model relates to a use process of an internal fixation anatomic type fork steel plate for posterior ankle fracture, which comprises the following steps: during operation, skin and fascia are cut and muscle tissues are separated, the rear ankle bone line is exposed, and the rear ankle fracture is shifted for reposition. After the fracture reduction is observed satisfactorily under the perspective, 1-2 mm of Kirschner's face is selected to temporarily fix the reduced rear ankle fracture block. The Kirschner wire is driven perpendicular to the bone surface. The anatomical fork steel plate fixed in the rear ankle fracture is clung to the bone surface, the steel plate is pushed to the far end, the Kirschner wire enters the open slot, the Kirschner wire is pushed to the far end until the Kirschner wire is propped against the upper wall of the second threaded hole, then the Kirschner wire is screwed into the sliding hole 3 by using the standard screw and screwed into the upper bone of the rear ankle bone, and the upper and lower positions of the anatomical fork steel plate fixed in the rear ankle fracture are adjusted before the rear ankle fracture is not screwed, so that the fixing accuracy is ensured. And then a 3.5 mm hollow screw nail is sleeved into the Kirschner wire, the hollow nail is screwed through the second threaded hole along the Kirschner wire direction, then the sliding hole screw nail is screwed, and the fixing of the other threaded holes is continuously completed. The k-wire was removed and fascia, muscle tissue, and skin were sutured together to complete the surgical procedure.

According to the utility model, the anatomical fork steel plate for internal fixation of the fracture of the rear ankle can be better attached to the surface of the rear ankle by integrally connecting the cross section of the steel plate main body 1 with the arc-shaped cross section and the bottom of the steel plate main body with the extended distal end extension part 2, so that the reliability of fracture fixation is enhanced, and repeated bending in the operation of orthopedics doctors is avoided. By providing the open slot 6 at the lower end of the distal end expansion part 2, the steel plate is conveniently inserted into the open slot 6 on the temporarily fixed kirschner wire, the open slot 6 is accurately mounted at a fixed position along the direction of the inserted kirschner wire, and the insertion and removal of the steel plate are facilitated. According to the utility model, the anatomical fork steel plate is fixed in the rear ankle fracture, the fit degree between the prefabricated arc on the ventral surface and the bone surface is good, and meanwhile, the open slot is arranged at the far end, so that the steel plate can be conveniently inserted and removed. In addition, through setting up the second screw hole 5 quantity of distal end extension 2 to three and transversely symmetrically arranging, the ankle bone inflation end behind the reliable fixed of being convenient for, the position of open slot 6 sets up with second screw hole 5 is corresponding, is convenient for cooperate and inserts or shift out the steel sheet. The sliding hole 3 is arranged in the middle of the upper part of the steel plate main body 1, so that the upper and lower positions of the rear ankle fracture internal fixation anatomical fork steel plate can be adjusted slightly up and down before the standard screw is installed and is not screwed, and the accuracy of the rear ankle fracture fixation is ensured; the upper part of the rear ankle bone is locked and fixed through a plurality of first threaded holes 4, so that the integral firm and reliable connection of the fracture is ensured. The steel plate far-end expansion part 2 is slightly bent towards the ventral surface of the steel plate main body, so that the steel plate can be better attached to the rear ankle bone surface, the structural form of the steel plate and the rear ankle bone is completely matched, and the stimulation to surrounding tissues is reduced.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. An anatomical fork steel plate for internal fixation of a rear ankle fracture is characterized in that: including steel sheet main part (1), steel sheet main part (1) are rectangular shape steel sheet and cross section be the arc cross section, the lower extreme of steel sheet main part (1) extends the shaping to distal end extension (2) to both sides, steel sheet main part (1) upper portion is provided with rectangular shape slide hole (3), the below of slide hole (3) is provided with a plurality of first screw hole (4) that are used for connecting locking screw, be provided with a plurality of transversely arranged second screw holes (5) that are used for connecting locking screw on steel sheet distal end extension (2), the lower extreme of steel sheet distal end extension (2) is provided with and communicates with each other open slot (6) with second screw hole (5), the width of open slot (6) is less than the diameter of corresponding second screw hole (5).

2. The posterior ankle fracture internal fixation anatomic bifurcation steel plate according to claim 1, wherein: the number of the second threaded holes (5) is three, one second threaded hole (5) is arranged on the middle line in the middle, and the other two second threaded holes (5) are symmetrically arranged on two sides of the middle line.

3. The posterior ankle fracture internal fixation anatomic fork steel plate of claim 2, wherein: the height of the second threaded holes (5) in the middle is larger than that of the second threaded holes (5) on two sides, and the length of the open slot (6) in the middle is larger than that of the open slot (6) on two sides.

4. The posterior ankle fracture internal fixation anatomic bifurcation steel plate according to claim 1, wherein: the length direction of the sliding hole (3) is arranged along the long axis direction of the steel plate main body (1).

5. The posterior ankle fracture internal fixation anatomic bifurcation panel according to claim 4, wherein: the plurality of first threaded holes (4) are centrally arranged and are positioned right below the sliding holes (3).

6. The posterior ankle fracture internal fixation anatomic bifurcation panel of claim 5 wherein: the width of the sliding hole (3) is 3.5 mm, and the inner diameter specification of the first threaded hole (4) is 3.5 mm.

7. The posterior ankle fracture internal fixation anatomic bifurcation steel plate according to claim 1, wherein: the number of the second threaded holes (5) is two, and the two second threaded holes (5) are symmetrically arranged on two sides of the central line.

8. The posterior ankle fracture internal fixation anatomic bifurcation steel plate according to claim 1, wherein: the steel plate far-end expanding part (2) is arranged in a circular arc bending way towards the side face of the abdomen of the steel plate main body.

9. The internal fixation anatomic bifurcation steel plate for posterior ankle fracture according to any one of claims 1-8, characterized in that: the second threaded hole (5) has an inner diameter of 3.5 mm, and the open groove (6) has a width of 2.0 mm.