CN202537667U - Femoral neck Kirschner wire three-dimensional guide sight - Google Patents

Abstract

The utility model discloses a three-dimensional guiding sighting device of femoral neck kirschner wire, which comprises a bone plate and a reference right-angle plate connected with the top end of the bone plate, wherein the reference right-angle plate comprises a front plate, a back plate connected with the back part of the front plate and a handle connected with the bottom end of the back plate, the upper part of the front plate is upwards protruded, the lower part of the front end of the front plate is provided with a chute, the upper part of the front plate is provided with a mouth-shaped through groove, the through groove is provided with a through groove notch, the front end of the front plate is connected with a guiding slide block, the guiding slide block is provided with a slide; the middle part of the aiming guide pipe is provided with a through hole, the front part of the aiming guide device is provided with a threaded column, and the threaded column penetrates through the through groove of the front plate and is in threaded connection with the through screw hole of the guide sliding block. The utility model discloses can put into the suitable position of thighbone neck with the kirschner wire accurately, the kirschner wire will aim the stand pipe and screw out earlier after putting into, moves out the kirschner wire from slider breach and logical groove breach again, and this sight can easily take out, and the use is convenient, easily operates.

Description

Femoral neck Kirschner wire three-dimensional guide sight

technical field

The utility model relates to an orthopedic surgical instrument, in particular to a convenient three-dimensional guiding sight for femoral neck Kirschner wire.

Background technique

In the surgical treatment of femoral neck fractures and femoral intertrochanteric fractures, it is necessary to use Kirschner wires for positioning and guidance when performing hollow nail internal fixation and pressurized sliding goose head screw (DHS) internal fixation to ensure that the implanted The cannulated nail is in place in the medullary canal of the femoral neck. In the existing technology: the traditional guide is positioned with a Kirschner wire in front of the femoral neck, and then used as a reference for the anteversion angle to visually determine the direction and position of the Kirschner wire guide wire. , Often the position of the positioning guide pin is wrong due to the deviation of visual inspection. To solve this problem, it is necessary to design a guiding sight that is consistent with the anteversion angle, can ensure that the guiding Kirschner wire is properly positioned in the femoral neck, and is completely parallel to the anteversion angle; when the original guider completes the guidance, The Kirschner wire is fixed behind the femoral neck, and it is difficult to remove the guide smoothly and conveniently. The part attached to the bone plate is often covered by muscle tissue and is difficult to pull out. If the guide is semi-open, it can be easily removed. In view of the above reasons, it is necessary to design a guide sight that has both the function of the original guide and can overcome the shortcomings of the above two aspects. Chinese patent No. ZL87211460 discloses a fixation guide for intertrochanteric femoral neck fractures, and Chinese patent ZL00208653.0 discloses a Kirschner wire-guiding aimer. These two patents solve the problem of aiming to a certain extent, but due to The structure is relatively complicated and the operation is inconvenient, so it has not been popularized and applied in a large scale.

Utility model content

The purpose of the utility model is to overcome the above-mentioned defects of the prior art, and provide a three-dimensional guiding sight for femoral neck Kirschner wires with simple structure, novel design and convenient use.

In order to achieve the stated purpose, the technical solution provided by the utility model is as follows: construct a three-dimensional guiding sight for femoral neck Kirschner wires, including a bone-fitting plate, a reference right-angle plate connected to the top of the bone-fitting plate, and the reference right-angle plate includes a front plate , the back plate connected to the rear of the front plate, the handle connected to the bottom of the back plate, the upper part of the front plate protrudes upwards, the lower part of the front end of the front plate is provided with a chute, and the upper part of the front plate is provided with a "mouth"-shaped through groove, There is a notch in the slot from the middle of the slot to the top of the front plate, a guide slider is connected to the front end of the front panel, a through screw hole is opened in the middle of the guide slider, a slider gap is opened from the upper part of the through screw hole to the top of the guide slider, and the guide slider The bottom is provided with a slider corresponding to the chute of the front plate; the middle part of the aiming guide tube is provided with a through hole, the front part of the aiming guide is provided with a threaded column, and the threaded column passes through the channel of the front plate and the guide slider. Through the screw hole screw connection.

The bone-fitting plate, the front plate, the rear plate, and the handle of the reference right-angle plate are integrally formed.

Both sides of the front plate of the bone-fitting plate and the reference right-angle plate are respectively provided with a front left auxiliary groove and a front right auxiliary groove, and both sides of the handle are respectively provided with a rear left auxiliary groove and a rear right auxiliary groove.

There is a non-slip grip on the rear of the aiming guide.

The tube body of the aiming guide tube is parallel to the rear plate, and the intersection angle between the axis line of the aiming guide tube and the center line of the bone-fitting plate is 45 degrees.

The front end of the bone-fitting plate is provided with an arc surface.

The section of the chute of the front plate is in the shape of a trapezoid with a small top and a large bottom, and the slider at the bottom of the guide slider can slide horizontally in the chute.

The diameter of the threaded column aiming at the guide is greater than the width of the notch of the through groove of the front plate and the width of the notch of the slider of the guide slider, and is smaller than the height of the “mouth” shaped through groove of the front plate.

The utility model has the advantages of simple structure, novel concept, convenient use, three-dimensional aiming, high precision, convenient operation, and the Kirschner wire can be accurately driven into the appropriate position of the femoral neck, and the Kirschner wire can be placed After inserting, unscrew the aiming guide tube first, and then remove the Kirschner wire from the notch of the slider and the notch of the through groove. The aimer can be easily taken out without enlarging the incision or pulling the local soft tissue. The hollow nail internal fixation of the femoral neck fracture and the DHS internal fixation of the femoral intertrochanteric fracture are more simple, convenient and easy to operate.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the utility model femoral neck Kirschner wire three-dimensional guiding sight;

Fig. 2 is the three-dimensional structural view of the utility model femoral neck Kirschner wire three-dimensional guiding sight;

Fig. 3 is an exploded view of Fig. 2;

Fig. 4 is a schematic diagram of the working principle of the three-dimensional guide aiming device for femoral neck Kirschner wire of the utility model.

Detailed ways

The technical solution of the femoral neck Kirschner wire three-dimensional guiding collimator of the utility model will be further described below in conjunction with the accompanying drawings and preferred embodiments.

Referring to the preferred embodiment of the femoral neck Kirschner wire three-dimensional guiding sight shown in Fig. 1 to Fig. 3, comprise bone-fitting plate 1, the reference right-angle plate 2 that is connected with bone-fitting plate 1 top, reference right-angle plate 2 comprises front plate 20, the rear plate 27 connected to the rear of the front plate 20, the handle 29 connected to the bottom end of the rear plate 27, the upper part of the front plate 20 protrudes upwards, the lower part of the front end of the front plate 20 is provided with a chute 21, and the upper part of the front plate 20 A "mouth"-shaped through groove 22 is provided, and a through groove gap 23 is provided from the middle part of the through groove 22 to the top of the front plate 20. The front end of the front plate 20 is connected with a guide slider 3, and the middle part of the guide slider 3 is provided with a through screw hole 31. A slider notch 32 is provided from the top of the screw hole 31 to the top of the guide slider 3, and the bottom of the guide slider 3 is provided with a slider 33 corresponding to the chute 21 of the front plate 20; the middle part of the aiming guide tube 4 is provided with a through hole 41 , The front part of the aiming guide pipe 4 is provided with a threaded column 42, and the threaded column 42 passes through the through groove 22 of the front plate 20 and is threadedly connected with the through screw hole 31 of the guide slider 3.

The bone-fitting plate 1, the front plate 20, the rear plate 27, and the handle 29 of the reference right-angle plate 2 are integrally formed.

Both sides of the front plate 20 of the bone-fitting plate 1 and the reference right-angle plate 2 are provided with a front left auxiliary groove 11 and a front right auxiliary groove 12 respectively, and both sides of the handle 5 are respectively provided with a rear left auxiliary groove 51 and a rear right auxiliary groove 52.

The rear portion of the aiming guide tube 4 is provided with an anti-skid handle 43 .

The tube body of the aiming guide tube 4 is parallel to the rear plate 27, and the intersection angle between the axis line of the aiming guide tube 4 and the centerline of the bone bonding plate 1 is 45 degrees.

The front end of the bone bonding plate 1 is provided with an arc surface.

The cross section of the chute 21 of the front plate 20 is a trapezoidal shape with a small top and a large bottom, and the slide block 33 at the bottom of the guide slider 3 can slide laterally in the chute 21 .

The diameter of the threaded post 42 of the aiming guide 4 is greater than the width of the slot notch 23 of the front plate 20 and the slider notch 32 of the guide slider 3 , and is less than the height of the “mouth” shaped slot 22 of the front plate 20 .

Refer to the working principle diagram shown in Figure 4: the bone-fitting plate 1 is attached to the tibia 100, and the left auxiliary groove 11 and the rear left auxiliary groove 51 or the front right auxiliary groove 12 and the rear right auxiliary groove 52 are selected according to the fracture position of the patient's tibia 100 Insert the auxiliary Kirschner wire 200 at a fixed angle to determine the position of the side of the tibia 100, then adjust the position of the threaded hole 31 of the guide slider 3 according to the thickness of the patient's tibia 100, and thread the threaded column 42 at the front end of the aiming guide tube 4 through The through groove 22 of the front plate 20 is tightly screwed with the through screw hole 31 of the guide slider 3 . Use an impact drill to nail another Kirschner wire 300 from the through hole 41 of the aiming guide tube 4 into the middle part of the lower third of the tibia, and rotate the aiming guide tube 4 from the through screw hole 31 of the guide slider 3 out, remove the Kirschner wire 300 from the slider notch 32 of the guide slider 3 and the through groove notch 23 of the front plate 20, pull out the auxiliary Kirschner wire 200, take out the three-dimensional guide sight for the femoral neck Kirschner wire, enter Next orthopedic surgery procedure.

What has been described above is only the principle and preferred embodiments of the present utility model. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the principle of the utility model, which should also be regarded as belonging to the protection scope of the utility model.

Claims (8)

1. the three-dimensional guiding of a neck of femur Kirschner wire sight comprises the subsides hone lamella, the benchmark L-square that is connected with subsides hone lamella top; The benchmark L-square comprises header board, with the back-connected back plate of header board, the handle that is connected with plate bottom, back; It is characterized in that: the top of header board is protruding upward, and preceding front edge of board bottom offers chute, and header board top offers " mouth " shape groove; The groove middle part offers the groove breach to the header board top, and preceding front edge of board is connected with guide runner, and the guide runner middle part offers logical screw; Logical screw top offers the slide block breach to the guide runner top, and the guide runner bottom is provided with and the corresponding slide block of the chute of header board; The middle part of aiming guide pipe offers through hole, and the front portion of aiming guide pipe offers threaded column, and threaded column is passed the groove of header board and the logical screw of guide runner is spirally connected.

2. the three-dimensional guiding of neck of femur Kirschner wire according to claim 1 sight is characterized in that: said subsides hone lamella, the header board of benchmark L-square, back plate, handle are one-body molded.

3. the three-dimensional guiding of neck of femur Kirschner wire according to claim 1 sight, it is characterized in that: the header board both sides of said subsides hone lamella and benchmark L-square offer preceding inside left's groove, preceding inside right forward's groove respectively, and the handle both sides are respectively equipped with back inside left's groove, back inside right forward's groove.

4. the three-dimensional guiding of neck of femur Kirschner wire according to claim 1 sight, it is characterized in that: the rear portion of said aiming guide pipe is provided with anti-sliding handle.

5. the three-dimensional guiding of neck of femur Kirschner wire according to claim 1 sight is characterized in that: the body of said aiming guide pipe is parallel with the back plate, and the axial line of aiming guide pipe is 45 degree with the angle of cut that pastes the hone lamella centrage.

6. the three-dimensional guiding of neck of femur Kirschner wire according to claim 1 sight, it is characterized in that: said subsides hone lamella front end offers arc surface.

7. the three-dimensional guiding of neck of femur Kirschner wire according to claim 1 sight, it is characterized in that: the chute section of said header board is up-small and down-big trapezoidal shape, and the slide block of guide runner bottom can laterally slide in the chute.

8. the three-dimensional guiding of neck of femur Kirschner wire according to claim 1 sight; It is characterized in that: the diameter of the threaded column of said aiming guider is greater than the width of the slide block breach of the groove breach of header board and guide runner, less than the height of " mouth " shape groove of header board.

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