KR200380143Y1 - one time guide for CHS - Google Patents

Abstract

Sliding screw used as internal fixation for femoral neck or intertrochanteric fracture

When fixing the guide pin

1.Designed to fix the correct position at once without trial and error

2. Make sure that the angle of the guide pin to the metal plate is exactly 135 degrees.

   Prevents tilting in the coronal plane

   Design to increase the adhesion of femoral shaft

Description

One time guide for CHS}

 Conventional sliding screw guide has a short body and no holes for fixing.

 I have to check the C-arm many times side and front

 It is difficult to find the exact location at one time.

It is inevitable that trials and errors that puncture dogs will be inevitable.

The screw position is incorrect.

 In addition, when the guide pin is inserted, the positional relationship between the femoral shaft and the plate

By fixing the metal plate in an excited state or forcing the cortical bone screw

Reconstruction of fractures due to excessive stress between metal plate and sliding screw

Fracture at the end of the operation or as time passes after surgery

Cause the cortical screw to break before the union occurs, ultimately

Surgery may fail.

1. Position the pin on the side of the C-arm without inserting the actual guide pin.

 Make it known.

2. After determining the position on the side, fix the guide without moving.

3. The pipe for the guide pin insertion should move freely up and down.

4. The position of the metal plate should be determined in advance before fixing the fastening screw.

1. Pipes for the insertion of the metal rods and guide pins of Fig. 2 and the extension wires

 Located on the same plane

2.Tongs (㉢, ㉣) to fix the guide body to the femur shaft

 There is a guide body punched to allow the tongs to be fixed and rotated,

 The two tongs are connected by a spring.

3. Make sure that the pipe for the guide pin insertion can move freely up and down.

 Grooves in the guide body

1. Effect of Configuration 1. C-arm because ㉠, ㉠, ㉤, ㉥ are located on the same plane

 When the images of ㉠ and 에서 overlap in the lateral view, the guide pin is actually inserted

 You can accurately predict where the guide pin will be fixed without

2. Effect of Configuration 2: Guide by simply grasping and releasing two tongs

The body is fixed to the femoral shaft and confirmed in the lateral view.

 To maintain its position while operating the C-arm for viewing on the screen.

To ensure that the screw and metal plate are exactly 135

It is also possible to prevent the metal plate from tilting and being fixed.

3.Effect of configuration 3: After fixing the guide body to the femur shaft with forceps

 Can move the guide pin insertion tube up and down

 Guide pins can be inserted in the desired position on the front and back of the C-arm.

Figure 1. 45 degree slope

Figure 2. Front view ㉠, ㉡: Metal rod of diameter 1-3mm

            ㉤: pipe inserting guide pin

            ㉥: extension line of the insertion tube, that is, the position where the guide pin is to be fixed

Figure 3. Side view ㉢, ㉣: clamp to hold the guide body

            ㉦: groove allowing ㉤ to move up and down

Figure 4. Sectional drawing in ① of FIG.

Figure 5. Sectional drawing in ② of FIG.

Claims (3)

   2, the tube for inserting the metal rods of ㉠, ㉤ and guide pins of ㉤ and     Structure whose extension line is located on the same plane    With tongs to secure and guide the guide body to the femoral shaft    Guide structure    The tube for the guide pin insertion can move freely up and down    Grooved structure in the guide body