CN217645319U - Femoral nail-placing guider - Google Patents

Abstract

A femoral nail placement guide comprising: a grip 111 connected to the guide portion and used for grasping or assembling with a distal end of a surgical navigation system; the guide part comprises a guide main body 100 and an opening and closing guide body 200; wherein, the screw 300 is fastened to limit the movement of the opening and closing guide body 200; the holding part and the guiding part are made of medical polymer materials or metals or metal alloys. The device is used for femoral neck fracture operation, can assist the doctor to carry out clinical operation, can improve femoral neck and put nail efficiency and accuracy, reduces the operation time.

Description

Femoral nail-placing guider

Technical Field

The utility model relates to a femur nail-placing guider, in particular to an orthopedic auxiliary instrument used in the femur neck internal fixation operation.

Background

The neck of femur needs to undertake the movement and support functions of the human body during most activities, and the treatment effect of the fracture will directly affect the quality of life of the patient after illness. At present, the fracture of the neck of femur accounts for 3.6 percent of the fracture of the whole body, accounts for half of the fracture of the hip, is frequently generated in middle-aged and old people with osteoporosis, the incidence rate of the fracture of the neck of femur increases year by year along with the serious aging of the society, and positioning equipment such as mechanical arms and the like have important significance in assisting the operation of the fracture of the neck of femur.

Most femoral neck fractures require surgical intervention. The current common surgical methods for femoral neck fractures include: (1) a plurality of hollow screws are fixed in the inner part; (2) sliding hip screws; (3) semi-hip joint replacement; (4) total hip replacement, etc. Many scholars both at home and abroad search for the treatment of femoral neck fracture in a large amount. The number, the angle, the spatial configuration and the like of the hollow lag screws when the femoral neck is treated are analyzed and discussed, and a new guideline is provided for the treatment of the femoral neck through biomechanics experiments and clinical practices. The < guideline for diagnosis and treatment of femoral neck fracture > recommends 3 parallel tension screws for fixation, the screws are parallel as much as possible and distributed dispersedly along the cortex of the femoral neck as much as possible so as to realize maximum tension and sliding pressurization, promote bone absorption and bone remodeling.

But the manual work hardly guarantees the depth of parallelism between nail and the nail among the operation process, so this patent provides an auxiliary screw placer, and the depth of parallelism between nail and the nail is just protected to the quick placing of the screw of being convenient for.

Disclosure of Invention

The utility model aims at providing a nail director is put to thighbone is convenient for assist in the thighbone neck internal fixation operation in-process and is carried out placing of screw, makes things convenient for the doctor to carry out the nail and puts into fast and guarantee the depth of parallelism between nail and nail.

An embodiment of the utility model provides a nail director is put to thighbone, and its constitution includes: a grip portion connected to the guide body and configured to be grasped or assembled with a distal end of a surgical navigation system; the guide part comprises a guider main body and an opening and closing guide body; wherein, the fastening screw limits the movement of the opening and closing guide body; the holding part and the guiding part are made of medical polymer materials or metals or metal alloys.

According to some embodiments of the present invention, the holding portion has an oblique threaded opening at the connection with the navigation end for fixation.

According to some embodiments of the utility model, the director main part is fixed through fastening screw with the guide body that opens and shuts through pivot and the combination assembly of commentaries on classics hole.

According to some embodiments of the utility model, 3 circular through-holes are formed after the combination of the first through groove and the fourth through groove, the second through groove and the fifth through groove, the third through groove and the sixth through groove of director main part and the opening and closing body, the hole is parallel to the central line in hole.

After the guider is connected with the navigation tail end, spatial data of the circular through hole are input into a navigation system, so that spatial coordinate conversion is carried out, and a doctor is assisted in guiding the position and the posture of the nail path.

The relative position of the circular through hole of the guide can be adjusted and designed into different relative intervals according to the relative position of the nail.

Drawings

FIG. 1 is a perspective view of a guide;

FIG. 2 is a perspective open view of the guide opening and closing body;

FIG. 3 is an assembled view of the guider main body and the opening and closing guider through a rotating shaft and a rotating hole;

FIG. 4 is a schematic view showing the assembly of the rotary shaft and the rotary hole;

FIG. 5 is a perspective view of the guide body;

FIG. 6 is a perspective view of the opening and closing guide body;

wherein the content of the first and second substances,

100: guider body

200: opening and closing guide body

300: fastening screw

210: rotating shaft

120: shaft hole

110: threaded hole

111: gripping part

121: the first through groove

122: second through groove

123: third through groove

124: threaded hole

211: fourth through groove

212: fifth through groove

213: sixth through groove

214: light hole

Detailed description of the preferred embodiment

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive. In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

The preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustrating and explaining the present disclosure and are not intended to limit the present disclosure.

As shown in fig. 1, fig. 2 and fig. 3, an embodiment of the present invention provides a femoral nail-placing guide, which comprises: a grip 111 connected to the guide portion and used for grasping or assembling with a distal end of a surgical navigation system; the guide part comprises a guide main body 100 and an opening and closing guide body 200; wherein, the screw 300 is fastened to limit the movement of the opening and closing guide body 200; the holding part and the guiding part are made of medical polymer materials or metals or metal alloys.

The joint of the holding part and the navigation tail end is provided with an oblique threaded opening 110 for fixing with external equipment, and the oblique design can better increase the fixing pressure in two directions and prevent the guider from moving transversely and longitudinally from the fixed end when the nail is placed.

In the present embodiment, the guide body includes a first through groove 121, a second through groove 122, a third through groove 123, and a screw hole 124; the opening/closing guide includes a fourth through-groove 211, a fifth through-groove 212, a sixth through-groove 213, a light hole 214, and a rotation shaft 210.

The guider main body 100 and the opening and closing guider 200 are firstly combined and connected through the rotating shaft 210 and the rotating hole 120, and then can perform opening and closing rotation movement; the fastening screw 300 is inserted into the screw hole 124 to be tightened.

After the fixation, the first through groove 121 and the fourth through groove 211, the second through groove 12 and the fifth through groove 212, and the third through groove 123 and the sixth through groove 213 are combined to form 3 circular through holes, and the center lines of the holes are parallel to each other.

When a doctor places the nail manually, the position of one of the nail holes can be selected, and the other screws are placed into the screws along the channels of the other two holes, so that the parallelism between the nail and the nail is guaranteed.

Or after the guider is connected with the navigation tail end, the spatial data of the circular through hole is input into the navigation system, so that spatial coordinate conversion is performed, planning data of a doctor in the system is converted into actual nail path information, and the doctor performs nail placing operation along the direction of the guide hole.

Through the guider of the utility model, the screw placing time of a doctor in an operation can be reduced, and the guide of the three screws can be completed through one-time planning.

The relative position of the circular through hole of the guider can be adjusted and designed into different relative intervals according to the relative position of the nail, so that different internal fixation implants can be conveniently placed.

Claims (5)

1. A femoral nail placement guide, comprising:

a grip portion connected to the guide body and used for grasping or assembling with a distal end of a surgical navigation system;

a guide part including a guide body and an opening and closing guide body;

a fastening screw for limiting the movement of the opening and closing guide body;

wherein the holding part and the guide part are made of medical polymer materials or metal alloy.

2. The femoral nail guide of claim 1, wherein the handle portion has an oblique threaded opening at the connection with the navigation tip for fixation.

3. The femoral nail guide of claim 1, wherein the guide body and the opening and closing guide body are assembled by a combination of a rotating shaft and a rotating hole.

4. The femoral nail guide of claim 1, wherein the guide body and the opening and closing guide body are fixed by a fastening screw.

5. The femoral nail guide of claim 1, wherein the guide body and the opening and closing guide body are combined to form 3 circular through holes, and the center lines of the holes are parallel to each other.

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