CN206007428U - A kind of fracture of calcaneus loaded reset device - Google Patents

Abstract

The utility model relates to a pressurized resetter for calcaneus fractures, which belongs to the technical field of orthopedic medical devices and is used for pressurized reduction of calcaneus fractures. The technical solution is: the utility model adopts a clamp structure, the two splints face parallel to each other, the splints are clamped on both sides of the calcaneus that needs to be reset, hold the two handles tightly, and the two splints are on both sides of the calcaneus toward the middle Apply pressure to perform the reduction operation of the fracture of the calcaneus to achieve the purpose of correcting the widened deformity of the calcaneus. The pressure balls and springs on the two splints can have better adaptability to the fracture site, and the overall uniform flexible pressure can be applied to the different heights of the fracture site to achieve a better pressure reduction effect. The utility model is the first creation of a calcaneal fracture reduction device, which has the advantages of simple structure, convenient use, uniform and reliable pressure, and good reset effect. The widened bone deformity avoids the defects of traditional surgical methods and creates favorable conditions for minimally invasive surgery.

Description

A kind of calcaneal fracture pressure reduction device

technical field

The utility model relates to a pressure reduction device for treating calcaneal fractures, which belongs to the technical field of orthopedic medical devices.

Background technique

Calcaneal fractures are the most common tarsal fractures. Mostly due to falling from a height or a car accident, the heel is hit by an external force. Among them, intra-articular fractures account for about 60%-75% of calcaneal fractures, and improper treatment can lead to long-term pain and even loss of function of the foot. At present, the surgical options for calcaneal fractures are mainly divided into traditional open reduction and internal fixation and minimally invasive closed reduction and internal fixation. Regardless of the surgical procedure, it is necessary to restore the width and height of the calcaneus (Bohler’s angle), correct the varus and valgus deformities of the calcaneus, and reconstruct the anatomical shape of the posterior articular surface of the subtalar joint. Traditional open reduction and internal fixation adopts an L-shaped lateral enlarged incision. Although it is beneficial to fracture reduction, the risk of postoperative infection and skin necrosis is high. In recent years, with the rapid development of minimally invasive techniques in foot and ankle surgery, minimally invasive treatment of calcaneal fractures has gradually become the mainstream. It mainly includes percutaneous poking reduction and internal fixation, limited incision combined with traction reduction and internal fixation, arthroscopic assisted reduction and internal fixation, and percutaneous balloon dilatation. However, there is no surgical instrument that can be used for closed reduction of widened calcaneus deformity in clinical work so far. Surgeons often need to use manual compression to correct and reduce, but it is often difficult to achieve a satisfactory reduction effect due to insufficient strength, which has also become a constraint. The main factor in the invasive treatment of calcaneal fractures. Therefore, it is very necessary to develop a reduction instrument for the widening deformity of the calcaneus.

Utility model content

The technical problem to be solved by the utility model is to provide a pressurized resetter for calcaneal fractures. This pressurized resetter can perform reset operations on calcaneal fractures while keeping soft tissues such as skin and muscles intact, and correct the widening of the calcaneus. To avoid the defects of traditional surgical methods and create more favorable conditions for minimally invasive surgery.

The technical scheme that solves the above-mentioned technical problem is:

A pressurized resetter for calcaneus fractures, which includes a splint, a handle, a rotating shaft, a pressure ball, and a spring. The two splints are rectangular, and the two splints are respectively connected with two handles. The clamp structure is formed by the connection of the rotating shaft. The two splints on one side of the rotating shaft face each other in parallel, and the two handles on the other side of the rotating shaft face each other. There are a number of round holes evenly distributed on the opposite plates of the two splints. , a pressing ball is embedded in the circular hole, and a spring is arranged at the lower end of the pressing ball.

In the above-mentioned pressurized resetter for calcaneal fractures, the inner diameter of the circular hole matches the pressure ball, the orifice of the circular hole is threaded along the inner wall of the orifice, the orifice is provided with a ring, and the outer circumference of the ring has threads and holes The ring is screwed on the opening of the round hole, the upper plane of the ring is flush with the plane of the splint, the diameter of the inner hole of the ring is smaller than the diameter of the pressure ball, and the upper end of the pressure ball protrudes from the surface of the ring. above the upper plane.

In the above-mentioned pressurized resetter for calcaneus fractures, there are pressure plates on the opposite plate surfaces of the two splints respectively, the plate surface area of the pressure plate corresponds to the plate surface area of the splint, and there are a plurality of round holes on the plate surface of the pressure plate and The circular holes of the pressing plate are opposite one by one, the diameter of the circular hole on the pressing plate surface is less than the diameter of the pressing ball, the upper end of the pressing ball protrudes above the upper plane of the pressing plate, and the pressing plate and the clamping plate are connected as one by bolts.

The beneficial effects of the utility model are:

The utility model adopts a clamp-type structure, and the two splints face parallel to each other. The splints are clamped on both sides of the calcaneus that needs to be reset, and the two handles are held tightly. The reduction operation of the bone fracture achieves the purpose of correcting the widening deformity of the calcaneus, and at the same time pushes back and forth along the long axis of the calcaneus to restore the uneven and widened calcaneus to its original width. The pressure balls and springs on the two splints can have better adaptability to the fracture site, and the overall uniform and flexible pressure can be performed with the different heights of the fracture site to achieve a better pressure reduction effect.

The utility model is the first creation of a calcaneal fracture reduction device, which has the advantages of simple structure, convenient use, uniform and reliable pressure, and good reset effect. Correcting the widening deformity of the calcaneus avoids the defects of traditional surgical methods and creates favorable conditions for minimally invasive surgery.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a cross-sectional view of a structure of Fig. 1;

FIG. 3 is a cross-sectional view of another structure of FIG. 1 .

The marks in the figure are as follows: splint 1, handle 2, rotating shaft 3, pressing ball 4, spring 5, ring 6, pressing plate 7.

detailed description

The utility model comprises splint 1, handle 2, rotating shaft 3, pressing ball 4, spring 5.

As shown in the figure, the two splints 1 are rectangular, and the two splints 1 are respectively connected with the two handles 2. The two handles 2 cross at the junction, and the intersections are connected by the rotating shaft 3 to form a clamp structure. One side of the rotating shaft 3 The board faces of the two splints 1 are parallel and opposite, and the two handles 2 on the other side of the rotating shaft 3 are opposite. Hold the two handles 2 tightly, and the two splints 1 move to the middle through the rotating shaft 3, which can put pressure on both sides of the calcaneus placed between the two splints 1, and perform the reduction operation of the calcaneus fracture, so as to correct the widening deformity of the calcaneus the goal of.

As shown in the figure, there are a plurality of round holes evenly distributed on the opposite board surfaces of the two splints 1 respectively, and pressure balls 4 are embedded in the round holes, and springs 5 are arranged at the lower ends of the pressure balls 4 . The pressure ball 4 and the spring 5 on the two splints 1 can have better adaptability to the fracture site, and can perform overall uniform flexible pressure with different heights of the fracture site, so as to achieve a better pressure reduction effect.

There are multiple installation structures for the pressure ball 4 and the spring 5, two of which are as follows.

Shown in the figure, a kind of structure is that the circular hole that places pressure ball 4 and spring 5 on the plate surface of splint 1 is blocked by circular ring 6. Concrete structure is, the orifice place of round hole has thread along the inner wall of orifice, and annulus 6 is installed at the orifice, and the outer circumference of annulus 6 has screw thread to match with orifice circumferential thread, and annulus 6 is screwed on the hole of round hole. At the mouth, the upper plane of the ring 6 is flush with the plane of the splint 1. The diameter of the inner hole of the ring 6 is smaller than the diameter of the pressure ball 4, so that the pressure ball 4 will not protrude from the ring 6, and the inner diameter of the ring 6 will make the upper end of the pressure ball 4 protrude from the edge of the ring 6. Above the upper plane so that the pressure ball 4 can pressurize the calcaneus.

Shown in the figure, another kind of structure is that the circular hole that places pressure ball 4 and spring 5 on the plate surface of splint 1 is blocked by pressure plate 7. The specific structure is that two clamping plates 1 have pressing plates 7 on the opposite plate surfaces respectively, and the plate surface area of the pressing plates 7 corresponds to the plate area of the clamping plate 1, and there are a plurality of round holes on the plate surface of the pressing plate 7 and the gap between the plate surface of the clamping plate 1. The round holes are opposite one by one, the diameter of the round hole on the plate surface of the pressure plate 7 is smaller than the diameter of the pressure ball 4, the upper end of the pressure ball 4 protrudes above the upper plane of the plate surface of the pressure plate 7, and the pressure plate 7 and the plate surface of the splint 1 are connected as a whole by bolts .

Claims (3)

1. A pressurized resetter for calcaneal fractures, characterized in that it includes a splint (1), a handle (2), a rotating shaft (3), a pressure ball (4), a spring (5), and two splints (1) It is rectangular, and two splints (1) are respectively connected with two handles (2), and the two handles (2) cross at the joint, and the intersection is connected by a rotating shaft (3) to form a clamp structure, and the rotating shaft (3) The board surfaces of the two splints (1) on one side are parallel to each other, and the two handles (2) on the other side of the rotating shaft (3) are opposite to each other. Cloth, a pressing ball (4) is embedded in the circular hole, and a spring (5) is arranged at the lower end of the pressing ball (4). 2. The pressurized resetter for calcaneal fracture according to claim 1, characterized in that: the inner diameter of the circular hole matches the pressure ball (4), and the orifice of the circular hole is threaded along the inner wall of the orifice. There is a circular ring (6) at the orifice, and the outer circumference of the circular ring (6) is threaded to match the circumferential thread of the aperture. The circular ring (6) is screwed at the aperture of the circular hole, and the upper plane of the circular ring (6) is aligned The plane of the splint (1) is flush, the diameter of the inner hole of the ring (6) is smaller than the diameter of the pressure ball (4), and the upper end of the pressure ball (4) protrudes above the upper plane of the ring (6). 3. The pressurized resetter for calcaneal fracture according to claim 1, characterized in that: there are pressure plates (7) on the opposite surface of the two splints (1), and the area of the plate surface of the pressure plate (7) is the same as The surface area of the splint (1) corresponds to the surface area of the clamping plate (7). There are multiple round holes on the surface of the clamping plate (7) that are opposite to the circular holes on the surface of the splint (1). (4), the upper end of the pressure ball (4) protrudes above the upper plane of the pressing plate (7) plate surface, and the pressing plate (7) and the splint (1) plate surface are connected as one by bolts.