CN205964139U - Stable form fracture tractor - Google Patents

Abstract

The utility model discloses a stable fracture tractor, which relates to the technical field of orthopedic surgical instruments, and comprises a traction rope, a traction body and a Kirschner wire. The traction body includes an upper cavity and a lower cavity, and the upper cavity is provided with a The motor and the controller, the rotating shaft of the motor is connected with a pulley, two guide wheels are arranged side by side in the lower chamber, a fixed pulley is hingedly arranged on the lower chamber, and the Kirschner wire is punctured transversely on the fractured leg , the outer two ends of the Kirschner wire are connected with a traction bow, the traction bow is connected with one end of the traction line, and the other end of the traction line passes through the fixed pulley and then passes through the two guide wheels in the lower cavity to connect with the pulley. A tension sensor is arranged on the traction line, and the signal of the tension sensor is transmitted to the controller, and the controller controls the positive and negative rotation of the motor according to the signal. The fractured patient recovers as quickly as possible.

Description

A kind of stable fracture retractor

technical field

The utility model relates to the technical field of orthopedic surgical instruments, in particular to a stable fracture tractor.

Background technique

Femoral shaft fractures and distal femoral fractures are common clinical fractures. Surgical treatment is the treatment of choice, including intramedullary nailing and bone plate fixation. Due to the strong strength of the thigh muscles such as the quadriceps femoris, patients with femur fractures often have shortening deformities due to muscle stretching, and it is difficult to reset, restore their length and maintain them effectively during the operation. If the anatomical reduction cannot be performed during the operation, complications such as malunion and poor alignment of the lower limbs may occur after the operation.

Traction is an important means of reducing femoral fractures and restoring the length of lower limbs. At present, the retractors used in various hospitals for lower extremity fracture patients mainly include a traction rope and a pulley. One end of the traction rope is connected to the bracket at the fracture site, and the other end bypasses the pulley to hang weights. The number of weights can be manually increased or replaced. The weight of the weight to control the traction. Since the patient will move while lying on the hospital bed, the traction force will change. Once the traction force changes, the weight of the weight should be adjusted. However, for the existing manual control method, frequent replacement of weights is extremely inconvenient, which not only increases the burden on the work of hospital nurses, but also brings troubles to the reset of fractured patients.

How to solve this technical problem has become the direction of efforts of those skilled in the art.

Contents of the invention

In order to overcome the above technical deficiencies, the utility model provides a stable fracture retractor.

The utility model specifically adopts the following technical solutions in order to achieve the above object:

A stable fracture retractor, comprising a traction rope, a traction body and a Kirschner wire, characterized in that the traction body comprises an upper cavity and a lower cavity, and a motor and a controller are arranged in the upper cavity, and the motor The rotating shaft is connected with a pulley, two guide wheels are arranged side by side in the lower chamber, and a fixed pulley is hingedly arranged on the lower chamber;

The Kirschner wire is punctured transversely on the fractured leg, and the outer two ends of the Kirschner wire are connected with a traction bow. The traction bow is connected with one end of the traction rope, and the other end of the traction rope passes through the fixed pulley and then passes through two The guide wheel is connected with the pulley behind.

Further, the traction rope is provided with a tension sensor, the signal of the tension sensor is transmitted to the controller, and the controller controls the forward and reverse rotation of the motor according to the signal.

Further, the range of the angle of rotation of the fixed pulley around the hinge point is 0-180°.

Further, four supporting feet are arranged under the traction main body.

Further, the tension sensor is arranged on the traction rope between the two guide wheels.

The beneficial effects of the utility model are as follows:

The utility model has a simple structure, replaces the original manual method, and brings convenience to the work of the hospital; and an automatic control system is formed by the controller, the tension sensing device, and the motor. Once the traction force changes, the control system will automatically adjust the traction force. Realize the purpose of precisely controlling the traction force, so as to ensure the recovery of fracture patients as soon as possible.

Description of drawings

Fig. 1 is the structural representation of a kind of stable fracture retractor of the present utility model;

Reference signs: 1-guide wheel, 2-fixed pulley, 3-fracture leg, 4-Kirschner wire, 5-traction bow, 6-traction rope, 7-tension sensor, 8-controller, 9-upper cavity , 10-pulley, 11-motor, 12-traction main body, 13-lower cavity, 14-supporting feet, 15-guiding wheels.

detailed description

In order for those skilled in the art to better understand the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and the following embodiments.

Example 1

As shown in Figure 1, this embodiment provides a stable fracture distractor, including a traction rope 6, a traction body 12 and a Kirschner wire 4, and it is characterized in that the traction body 12 includes an upper cavity 9 and a lower cavity body 13, a motor 11 and a controller 8 are arranged in the upper cavity 9, the rotating shaft of the motor 11 is connected with a pulley 10, and two guide wheels 15, 1 are arranged side by side in the lower cavity 13, and the lower cavity 13. A fixed pulley 2 is arranged on the upper hinge;

The Kirschner wire 4 is punctured transversely on the fractured leg 3, and the outer two ends of the Kirschner wire 4 are connected with a traction bow 5, and the traction bow 5 is connected with one end of a traction rope 6, and the other end of the traction rope 6 passes through the fixed pulley 2 After passing through two guide wheels in the lower cavity 13, it is connected with the pulley 10.

The traction rope 6 is provided with a tension sensor 7, the signal of the tension sensor 7 is transmitted to the controller 8, and the controller 8 controls the forward and reverse rotation and opening and closing of the motor 11 according to the signal.

Example 2

As shown in Figure 1, this embodiment provides a stable fracture distractor, including a traction rope 6, a traction body 12 and a Kirschner wire 4, and it is characterized in that the traction body 12 includes an upper cavity 9 and a lower cavity body 13, a motor 11 and a controller 8 are arranged in the upper cavity 9, the rotating shaft of the motor 11 is connected with a pulley 10, two guide wheels are arranged side by side in the lower cavity 13, and the lower cavity 13 is hinged A fixed pulley 2 is provided;

The Kirschner wire 4 is punctured transversely on the fractured leg 3, and the outer two ends of the Kirschner wire 4 are connected with a traction bow 5, and the traction bow 5 is connected with one end of a traction rope 6, and the other end of the traction rope 6 passes through the fixed pulley 2 After passing through two guide wheels 15,1 in the lower cavity 13, it is connected with the pulley 10.

The traction rope 6 is provided with a tension sensor 7, the signal of the tension sensor 7 is transmitted to the controller 8, and the controller 8 controls the forward and reverse rotation and opening and closing of the motor 11 according to the signal.

The angle range of the fixed pulley 2 rotating around the hinge point is 0-180°.

A supporting foot 14 is arranged under the traction main body 12 .

The tension sensor 7 is arranged on the traction rope 6 between the two guide wheels 15,1.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. The scope of patent protection of the utility model is subject to the claims. Equivalent structural changes should be included in the protection scope of the present utility model in the same way.

Claims (5)

1. A stable fracture retractor, comprising a traction rope (6), a traction body (12) and a Kirschner wire (4), characterized in that the traction body (12) includes an upper cavity (9) and The lower cavity (13), the upper cavity (9) are provided with a motor (11) and a controller (8), the rotating shaft of the motor (11) is connected with a pulley (10), the lower cavity (13 ) are arranged side by side with two guide wheels (15,1), and a fixed pulley (2) is hingedly arranged on the lower cavity (13); The Kirschner wire (4) is punctured transversely on the fractured leg (3), the outer two ends of the Kirschner wire (4) are connected with a traction bow (5), and the traction bow (5) is connected with one end of the traction rope (6), The other end of the traction rope (6) is connected to the pulley (10) after passing through the fixed pulley (2) and passing through the two guide wheels (15, 1) in the lower cavity (13). 2. The stable fracture distractor according to claim 1, characterized in that, the traction rope (6) is provided with a tension sensor (7), and the signal of the tension sensor (7) is transmitted to the controller (8) , the controller (8) controls forward and reverse rotation and opening and closing of the motor (11) according to the signal. 3. The stable fracture distractor according to claim 1, characterized in that, the angle range of the fixed pulley (2) rotating around the hinge point is 0-180°. 4. The stable fracture distractor according to claim 1, characterized in that, a supporting foot (14) is arranged under the traction main body (12). 5. The stable fracture distractor according to claim 2, characterized in that the tension sensor (7) is arranged on the traction rope (6) between the two guide wheels (15, 1).