CN203970518U - A kind of fracture of shaft of femur auxiliary reset device - Google Patents

Abstract

The utility model discloses an auxiliary resetter for femoral shaft fractures, which comprises a fixing bracket, a universal joint joint is arranged at the end of the fixing bracket, and a fixing sleeve is connected to the end of the universal joint joint; a reset pin is also included, and the rear part of the reset pin It is sleeved in the fixed sleeve and can slide up and down in the fixed sleeve. Its beneficial effect is that it can correct the anteroposterior and medial and lateral displacement of the fractured end of the femur, thereby achieving good alignment of the fractured end, facilitating the insertion of the femoral intramedullary nail guide wire, and improving the success rate of closed reduction of the femoral shaft fracture , At the same time reduce the damage to the patient, shorten the operation time and the X-ray exposure time of the surgeon.

Description

Auxiliary reduction device for femoral shaft fracture

technical field

The utility model relates to medical equipment in clinical orthopedic surgery, in particular to an auxiliary resetter for femoral shaft fractures.

Background technique

In clinical practice, in order to make up for the inability of the traction bed to correct the anteroposterior and medial and lateral displacement of the femoral shaft fracture, the methods currently used are: 1. Press the opposite direction of the fracture displacement by hand to promote the reduction of the fracture. Its advantages It is simple and easy to perform, but the disadvantage is that the force cannot be accurately grasped when squeezing by hand, and the surgeon cannot evaluate the reset effect due to blocking perspective, resulting in a high failure rate. 2. Double splint technology for assisted reduction, its advantage is that the position of the double splint can be gradually adjusted under fluoroscopy monitoring to perform fracture reduction, which significantly improves the success rate of reduction; the disadvantage is that the splint squeezes the fractured end through the soft tissue, which is easy to cause Damage to soft tissues (such as muscles, blood vessels, nerves, etc.). 3. The gun-type reduction forceps launched by AO Company can reset the broken end of the femoral shaft fracture. The reduction forceps need to incise the skin tissue, which increases the probability of surgical incision, blood vessel and nerve damage, and the equipment is relatively expensive. 4. Use the push rod technique for assisted reduction. The method is to insert the push rod to the broken end of the fracture in the opposite direction of the fracture displacement, and push the push rod to promote the fracture reduction. Its advantage is that it directly pushes the broken end of the fracture for reduction, with a high probability of success and less damage to soft tissues; the disadvantage is that in order to avoid damage to blood vessels and nerves, the top rod must be placed in the safe area of the thigh (that is, the anterolateral side of the thigh). , so the top-rod technique cannot be used for fractures with posterior displacement of the distal femoral shaft. In addition, when using the top rod, the operator is exposed to fluoroscopy, which increases the injury of the operator. At the same time, the operator is easy to block the fluoroscopy, making it impossible to evaluate the reduction effect.

Utility model content

The purpose of the utility model is to develop an auxiliary resetter for femoral shaft fractures. After the orthopedic traction bed corrects the shortening and rotational displacement of the femoral shaft fracture, the resetter can correct the anteroposterior and medial and lateral displacement of the broken end of the femur (especially for fractures near the proximal and distal ends of the femur), In order to achieve good alignment of the fracture ends, facilitate the placement of the femoral intramedullary nail guide wire, improve the success rate of closed reduction of femoral shaft fractures, reduce the damage to the patient, shorten the operation time and the X-ray exposure time of the surgeon .

For realizing this technical purpose, the scheme that the utility model adopts is:

An auxiliary reduction device for femoral shaft fractures, including a fixing bracket, a universal joint joint is arranged at the end of the fixing bracket, and a fixing sleeve is connected to the end of the universal joint joint; a reset pin is also included, and the rear part of the reset pin is sleeved on the fixing sleeve Inside, and can slide up and down in the fixed sleeve.

Preferably, the universal joint joint can rotate 360° with the fixed bracket as the axis.

Preferably, a chute is provided on the rear surface of the reset needle, and a screw hole is provided on the fixing sleeve, and an adjusting screw passes through the chute and the screw hole to adjust the sliding of the reset needle.

The beneficial effect of the utility model is that the auxiliary resetter for femoral shaft fractures can place reset pins in the safe area, and can push or pull the broken end of the fracture to reset as needed, so it can be used for fractures in various displacement directions (such as in the femoral fracture). When the proximal end of the shaft is fractured, the proximal femoral fracture end shifts anterolaterally. After placing a reset pin on the anterolateral side of the safety zone, the fracture end can be pushed to reset; After the reset needle is placed in the front side of the safety zone, the fracture end can be pulled forward to reset). The reducer is simple in design and easy to use, which can improve the success rate of closed reduction of femoral shaft fractures, reduce the damage to patients, shorten the operation time and X-ray damage to surgeons, so it has obvious advantages and is worthy of vigorous promotion in clinical practice. .

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model of the auxiliary reducer for femoral shaft fracture.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in FIG. 1 , the auxiliary reducer for femoral shaft fracture includes an L-shaped fixing bracket 1 for connecting and fixing the reducer with the traction bed. There is a universal joint joint 2 at the end of the fixed bracket. The universal joint joint takes the fixed bracket as the axis and can rotate 360°, which is convenient for docking with the reset needle from different angles; there are two adjustment knobs on the fixed bracket 21. The universal joint joint and the fixed frame can be adjusted to be relatively fixed.

There is a fixed sleeve 3 connected to the end of the universal joint joint; the rear part of a reset pin 4 is sleeved in the fixed sleeve, the rear surface of the reset pin is provided with a chute 41, and the fixed sleeve is provided with a screw hole through which an adjusting screw 5 passes. The chute and the screw hole can push the reset pin to slide up and down in the fixed sleeve by rotating the adjusting screw.

According to different patients, a 3.0mm or 3.5mm Kirschner wire can be selected as the reset pin. After the reset pin is inserted into the fracture end that needs to be displaced, it will move accordingly to achieve fracture reduction.

The reset needle in the utility model has a flexible and changeable movable angle, and can rotate 360° around the fixed bracket through the universal joint joint, and can also slide up and down along the fixed sleeve.

When reducing the fracture, use the orthopedic traction bed first to correct the shortening and rotational displacement of the femoral shaft fracture, then connect and fix the femoral shaft fracture reducer with the traction bed through the fixation frame, and take a reset pin of appropriate size (3.0 or 3.5 mm Insert a reset pin (drilled in with an electric drill) parallel to the direction of fracture displacement to a fracture end. After seeing that the position is good, under perspective monitoring, adjust the slide of the chute to drive the fracture through the reset pin. The movement of the end achieves the reduction of the fracture. After the fracture was well aligned, the intramedullary nail guide wire was inserted, and after the position of the guide wire was confirmed by anteroposterior and lateral fluoroscopy, the reset pin was removed, the pulp was reamed, and the intramedullary nail was inserted to complete the operation. The femoral shaft auxiliary reducer is fixed on the traction bed, and the surgeon can leave when performing X-ray fluoroscopy, which can avoid X-ray damage to the physician.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any minor modifications, equivalent replacements and improvements made to the above embodiments according to the technical essence of the present utility model shall be included in the Within the scope of protection of the technical solution of the utility model.

Claims (2)

1. a fracture of shaft of femur auxiliary reset device, is characterized in that, comprises a L shaped fixed support, and for positor being connected with extension table and being fixed, fixed support end is provided with a gimbal suspension joint, and gimbal suspension connector end is connected with a fixed cover; Also comprise a reset pin, reset pin rear sleeve is connected in fixed cover, and can in fixed cover, slide up and down; Reset pin posterior face is provided with chute, and fixed cover is provided with screw, and a set screw, through chute and screw, regulates reset pin to slide.

2. fracture of shaft of femur auxiliary reset device as claimed in claim 1, is characterized in that, described gimbal suspension joint, taking fixed support as axle center, can do 360 ° of rotations.