TWI413509B - Guide structure - Google Patents

Abstract

The present invention discloses a guiding structure. The guiding structure comprises a base plate. A vertical stand is extended on the base plate, and a handle is extended on the vertical stand. A plurality of through guiding tubes are obliquely configured between the base plate and the vertical stand. A guiding strip is obliquely extended downwardly from one side of the base plate. The guiding strip and the guiding tubes are tilted at the same angle. Therefore, in a surgical process of implanting bone nail into the femoral neck and the femoral head, the present invention can conveniently and effectively ensure the accuracy of implanting a guiding needle into the femur, so as to reduce or exempt from the usage of X-ray in a process of implanting needles and to prevent the occurrence of a secondary damage on the femur.

Description

Guiding structure

The present invention relates to a guiding structure, and more particularly to an introducer for correctly implanting a guiding needle into a affected part of a femur fracture during a treatment for a fracture near the femoral trochanter.

According to the treatment of fractures near the femoral trochanter with surgical fixation as the main method, DHS (Dynamic hip screw) dynamic hip joint nail is the most commonly used material for the fixation of fractures near the rotor. It has been confirmed in years of clinical experience that the nail is stable. Sexual fractures do have a fairly satisfactory success rate; the nail must first drive the introducer needle into the femoral neck and head before the femoral neck and head are inserted. The main function of the guide needle is to provide the nail to correctly implant the femoral head. The guidance of the location. In the examination (see the first figure), when the guiding needle is driven into the femoral neck and the head, an introducer 10 is needed to confirm the implantation angle of the guiding needle, and the guiding device 10 has a substrate 11, A base 12 is extended on the base 11, and a handle 13 is further extended on the base 12. A through guide tube 14 is obliquely disposed between the base 11 and the base 12, and the guide tube 14 is oriented. The inlet and the outlet are respectively located at the rear end surface of the base 12 and the lower end surface of the substrate 11. As a result of (see the second, third, and fourth figures), during the operation of implanting the femur into the femur, the substrate 11 of the introducer 10 is first placed against the front side of the affected part of the femur fracture, The guiding tube 14 between the piece 11 and the stand 12 inserts the guiding pin 15 from the inlet of the guiding tube 14 at the rear end surface of the standing seat 12, since the oblique guiding tube 14 and the substrate 11 have a predetermined angle ( Generally, it is 135 degrees), so that the guiding needle 15 is implanted and penetrates through the affected part of the fracture, thereby providing the necessary guiding action for the implantation of the nail into the position of the femoral head (as shown in the fifth figure). However, when the operator pushes the guiding needle 15 into the femur, it is necessary to continuously and continuously pass the X-ray to confirm the position of the guiding needle 15 in the femur (the position includes angle, depth, etc.) to prevent the guide. The needle 15 is angularly offset or pierced by the femur. In addition to the X-ray to confirm the position of the guiding needle 15 and causing troubles in the surgical procedure, the clinical problem often encountered is that the guiding needle 15 does not penetrate enough. Confirm the expected direction, and find the wrong direction after entering the deep position, causing the guide needle 15 to be re-injected, causing secondary damage to the femur.

The purpose of this case is to provide a convenient and effective control of the correctness of the implantation of the guiding needle into the femur, reduce or eliminate the use of X-rays during the implantation process, and avoid the occurrence of secondary damage to the femur. In order to achieve the above object, the guiding structure of the present invention has a substrate, the bottom surface of the substrate is provided with a positioning spike, a base is extended on the substrate, and a grip bar is extended on the base, and the substrate and the stand are inclined. A plurality of guiding guide tubes are disposed, and one side of the substrate extends obliquely downwardly to a guiding strip, and the guiding strip and the guiding tube have the same inclination angle.

In order to enable the reviewer to understand the structure and the effect achieved by the present invention, the embodiment shown in the drawings will be described in detail as follows: First, please refer to the embodiments of the present invention illustrated in the sixth and seventh figures. The three-dimensional structure is a schematic structure 20, the guiding structure 20 has a substrate 21, the bottom surface of the substrate 21 is provided with a positioning spike 211, and a base 22 extends on the substrate 21, the stand A grip bar 23 is further extended on the 22, and a plurality of through guide tubes 24 are obliquely disposed between the substrate 21 and the base 22, and the inlet and the outlet of the plurality of guide tubes 24 are respectively located at the stand 22 a rear end surface and a lower end surface of the substrate 21, a side of the substrate 21 extends obliquely downwardly to a guiding strip 25, the front end of the guiding strip 25 has a turning end 251; and the guiding strip 25 and the guiding The tube 24 has the same angle of inclination. In a preferred embodiment, the angle of inclination is an interval of 5 degrees, and preferably between 125 degrees and 150 degrees, in particular, 135 degrees and 140 degrees are the most Common angles.

With the above configuration (please refer to the eighth, ninth, and tenth drawings at the same time), during the operation of implanting the femur into the femur, the substrate 21 of the guiding structure 20 can be firstly abutted against the front side of the affected part of the femur fracture. The positioning spike 211 on the bottom surface of the substrate 21 can assist the attachment to the surface of the femur. Before the substrate 21 is positioned on the femur, the guide strip 25 on the side of the substrate 21 and the turning end 251 of the front end thereof can be used first. The recessed area of the top of the femoral head is convenient for the operator to confirm the angle. A plurality of guiding tubes 24 between the substrate 21 and the base 22 are used to fix a guiding needle 30 from the rear end surface of the standing seat 22. The inlet of the guiding tube 24 is inserted, so that the guiding needle 30 is implanted and penetrates through the affected part of the fracture, thereby providing the necessary guiding function for the implantation of the nail into the position of the femoral head.

Therefore, the guiding strip 25 of the present case has the same inclination angle as the guiding tube 24, and also represents the implantation angle of the guiding needle 30, which can provide an operator to confirm whether it is parallel with the longitudinal surface of the femur, and provides favorable angular positioning. Further, after the substrate 21 is positioned, a plurality of guide tubes 24 are formed obliquely between the substrate 21 and the stand 22, and the guide needles 30 are provided at different offset positions on the sides of the femur. Patients with different femoral appearances can choose the best placement.

In summary, in the process of driving the introducer needle 30 into the femur, the position of the guide needle 30 can be accurately predicted, such as the position, angle, and the like, and the position of the guide needle 30 can be confirmed by reducing or eliminating the X-ray. The situation, greatly improving the efficacy and quality. In the drawings, certain lines, proportions, component thicknesses, etc., may be exaggerated for clarity; and some of the component names used in the description herein are named for the purpose of describing the examples only and are not limited by their meaning. The case. The descriptions of the present invention are merely illustrative of the embodiments or examples of the technical means employed to solve the problems, and are not intended to limit the scope of the present invention. That is, any change and modification that is consistent with the scope of the patent application in this case or according to the scope of the patent in this case is covered by the scope of the patent. In summary, the structure of the present invention is not found in the market, and by the change of the structure, the utility can be improved, and the industrial progress is achieved. The company has already met the requirements of the patent, and applied for it according to law, and prayed for the patent. Approved, to the sense of virtue.

"Learn part"

10. . . Introducer

11. . . Substrate

12. . . Stand

13. . . Grip bar

14. . . Guide tube

15. . . Guide needle

"Part of this case"

20. . . Guiding structure

twenty one. . . Substrate

211. . . Positioning spike

twenty two. . . Stand

twenty three. . . Grip bar

twenty four. . . Guide tube

25. . . Guide strip

251. . . Turning end

The first figure depicts a perspective view of a conventional introducer;

The second figure shows a schematic view of the use of a conventional guide;

The third figure shows a schematic diagram of the use of the conventional guide (1);

The fourth figure shows the schematic diagram of the use of the conventional guide (2);

The fifth figure shows a schematic plan view of the femoral implant bone nail;

Figure 6 is a front perspective view showing the guiding structure of the embodiment of the present invention;

Figure 7 is a reverse perspective view showing the guiding structure of the embodiment of the present invention;

Figure 8 is a perspective view showing the use of the guiding structure of the embodiment of the present invention;

Figure 9 is a schematic plan view showing the guiding structure of the embodiment of the present invention (1);

Figure 10 is a schematic plan view showing the guiding structure of the embodiment of the present invention (2);

20. . . Guiding structure

twenty one. . . Substrate

twenty two. . . Stand

twenty three. . . Grip bar

twenty four. . . Guide tube

25. . . Guide strip

251. . . Turning end

Claims (3)

A guiding structure, the guiding structure has a substrate, a base is extended on the substrate, and a grip bar is further extended on the stand, and a plurality of guiding tubes are arranged obliquely between the substrate and the stand. A guiding strip is further inclined downwardly on one side of the substrate, and the guiding strip has the same inclination angle as the guiding tube. The guiding structure of claim 1, wherein the leading end of the guiding strip having the side of the guiding structure extending obliquely downward has a turning end. The guiding structure of claim 1, wherein the guiding strip has a guiding strip angle of between 125 degrees and 150 degrees.