KR20220121090A - Insertion device of nail - Google Patents

Abstract

Provided is a nail insertion instrument which increases the convenience of an insertion procedure of nails inserted into a human femur and allows selection of various angles for fastening the nails. A nail insertion instrument according to one embodiment of the present invention includes a handle part including a hollow-shaped handle body; a nail connection part having one end coupled to the handle part and the other end coupled to a nail; and a sleeve orientation angle adjusting part including a shaft inserted into the handle body to be coupled to the handle part and adjusting an orientation angle of at least one sleeve used for fastening the nail according to the rotation of the shaft.

Description

Nail insertion device {INSERTION DEVICE OF NAIL}

The present invention relates to a nail insertion device, and more particularly, to a nail insertion device for inserting a nail (a metal tablet in the bone marrow) into a human femur.

The femur, the largest joint in the human body, is a joint connecting the pelvic bone and the thigh bone and plays an important role in lower body movement.

The aforementioned femur includes a femur head coupled to the acetabulum of the pelvis, a femoral neck formed extending downward from the femoral head, a greater femur formed protruding from the femoral neck to have an approximately Y-shape at a distance from the femoral head, and a femur. It consists of a lesser trochanter of the femur protruding in a direction opposite to the greater trochanter and a femur extending long in the downward direction.

When such a femur is fractured, a nail (or implant) is operated. The nail is inserted from the upper part of the greater femur toward the femur, and the nail is inserted obliquely into the femoral head from the lower side of the greater femur. It includes an upper screw for fixing the upper part and a lower screw for fixing the lower part of the nail body by being driven horizontally across the thigh. Also, a nail insertion mechanism may be used to insert such a nail.

On the other hand, since most people have almost the same shape and size of the femur, the shape and length of the nail are fixed in the market and are being operated.

However, if the nail (metal nail in the bone marrow) insertion device fails to guide precisely, the insertion position of the nail implant, etc., or the insertion position of the delay screw is incorrect, the rotation, malunion, or delay of the femoral head bone fragment after the procedure Problems such as coalescence occur.

Registered Patent Publication No. 10-1672413

An object of the present invention is to provide a nail insertion device that increases the convenience of a nail insertion procedure to be inserted into a human femur, and enables a variety of fastening angles to be selected at the time of nail fastening.

A nail insertion mechanism according to an embodiment of the present invention is a nail insertion mechanism for fastening a nail to a human femur. A sleeve orientation angle coupled to the handle part, including a nail connection part coupled to the nail and a shaft inserted into the handle body, and adjusting an orientation angle of at least one sleeve used for fastening the nail according to the rotation of the shaft. It is characterized in that it includes a control unit.

Preferably, the handle part further comprises an extension part having one end coupled to the handle body and the other end coupled to the nail connection part.

Preferably, the shaft includes a first sleeve fixing hole for guiding the first sleeve to be inclined in the first direction at a first rotation angle according to the rotation of the shaft, and a second direction at a second rotation angle according to the rotation of the shaft. and a second sleeve fixing hole for guiding the first sleeve so as to be inclined toward the .

Preferably, the shaft includes a third sleeve fixing hole for guiding the second sleeve to be inclined in the first direction at a first rotation angle according to the rotation of the shaft, and a second direction at a second rotation angle according to the rotation of the shaft. It further comprises a fourth sleeve fixing hole for guiding the second sleeve to be inclined toward the angle of the third sleeve fixing hole and the fourth sleeve fixing hole is characterized in that different from each other.

Preferably, the shaft includes a fifth sleeve fixing hole for guiding a third sleeve in a horizontal direction perpendicular to a vertical direction at a first rotation angle according to the rotation of the shaft, and a second rotation angle according to the rotation of the shaft. It characterized in that it further comprises a sixth sleeve fixing hole for guiding the third sleeve in the horizontal direction.

Preferably, the handle body includes a first hole communicating with the first sleeve fixing hole and a second hole communicating with the second sleeve fixing hole.

Preferably, the handle body further includes a third hole communicating with the third sleeve fixing hole and a fourth hole communicating with the fourth sleeve fixing hole.

Preferably, the handle body further comprises a fifth hole communicating with the fifth sleeve fixing hole and the sixth sleeve fixing hole.

Preferably, the shaft further comprises an enlarged diameter portion and a reduced diameter portion formed to be smaller in diameter than the enlarged diameter portion.

Preferably, the sleeve orientation angle adjusting part is formed at an end of the enlarged diameter part, and a sleeve locking part for rotating the shaft, and one end of the sleeve locking part are coupled to the outer circumferential surface of the handle body by the sleeve locking part, and the sleeve is An angle adjustment guide comprising a handle body and a sleeve locking nut applying force to be fixed with respect to the shaft, and a protrusion coupled to an end of the reduced diameter portion and rotated in the same direction as the rotation direction of the shaft according to the rotation of the shaft. A portion and one side are coupled to the extension portion, the other side is inserted into the angle adjustment guide portion, characterized in that it further comprises a rotation preventing portion for preventing the movement of the protrusion.

Preferably, when the shaft is inserted into the handle body, the rotation preventing part includes a first locking part that prevents movement of the protrusion, and prevents movement of the protrusion at a first rotation angle according to the rotation of the shaft. It characterized in that it comprises a second locking portion and a third locking portion for preventing the movement of the protrusion at a second rotation angle according to the rotation of the shaft.

Preferably, the sleeve orientation angle adjusting part is coupled to the outer peripheral surface of the reduced diameter part, and when the shaft is advanced and rotated in the handle body, an elastic part for applying an elastic restoring force in a direction opposite to the direction in which the shaft is inserted; It is coupled to the outer peripheral surface of the reduced diameter portion, is positioned between the angle adjustment guide portion and the elastic portion, characterized in that it further comprises a support portion for supporting the elastic restoring force of the elastic portion.

Preferably, the sleeve locking part comprises a bolt part having a thread formed on an outer circumferential surface to rotate the sleeve locking nut, and a grip part having a diameter larger than that of the bolt part and rotating the shaft.

Preferably, the sleeve locking nut includes a ring guide groove seated on an outer circumferential surface of a ring portion inserted into a ring insertion groove formed on an outer circumferential surface of one end of the handle body, and a pin insertion of the handle body formed to be spaced apart from the ring insertion groove in a vertical direction. It is characterized in that it includes a pin portion that is seated in the groove.

Preferably, the nail connection part is characterized in that it comprises an insertion hole into which an insertion mechanism for inserting the nail into the femur is inserted, and a nail coupling part coupled to the nail.

According to the present invention, it is possible to provide a nail insertion mechanism that allows selection of various fastening angles by configuring the sleeve orientation angle adjusting unit provided in the nail insertion mechanism to adjust the orientation angle of the sleeve used for nail fastening.

In addition, by providing the sleeve locking part and the sleeve locking nut, the sleeve used for fastening the nail can be stably fixed to the handle body and the shaft, and thus accurate treatment can be performed.

1 is a view showing the overall shape of a nail according to an embodiment of the present invention.
2 is a view showing a nail inserted into the femur.
3 is an exploded perspective view of a nail according to an embodiment of the present invention.
4 is a view showing a cross-sectional shape of a nail according to an embodiment of the present invention.
5 is a detailed view showing the second screw provided in the nail of the present invention.
6 is a view showing the overall shape of the nail insertion mechanism according to an embodiment of the present invention.
7 is a view showing a cross-sectional shape of a nail insertion device according to an embodiment of the present invention.
8 is an exploded perspective view of a nail insertion device according to an embodiment of the present invention.
9 is a view showing a sleeve orientation angle adjusting unit provided in the nail insertion device of the present invention.
10 and 11 are views showing a state in which the orientation angle of the sleeve fixing hole is adjusted according to the rotation of the shaft provided in the sleeve orientation angle adjusting unit of the present invention.
Figure 12 is a view showing the action of the angle adjustment guide portion and the rotation preventing portion provided in the sleeve orientation angle adjustment portion of the present invention.
13 is a view showing the action of the sleeve locking part and the sleeve locking nut provided in the sleeve orientation angle adjusting part of the present invention.
14 is a perspective view showing the sleeve locking nut near one end of the outer peripheral surface of the handle body provided in the nail insertion mechanism of the present invention.
15 is a view showing a mechanism for fixing the sleeve to the nail insertion device of the present invention.
16 is a view showing a process of inserting the nail body into the femur using the nail insertion mechanism.
17 is a view showing a process of inserting the first screw into the nail body.
18 is a view showing a process of inserting the second screw into the nail body.
19 is a view showing a process of inserting the third screw into the nail body.
20 is a view showing a process of inserting the fourth screw into the nail body.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in adding reference numerals to the components of each drawing, the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, preferred embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited thereto or may be variously implemented by those skilled in the art without being limited thereto.

1 is a view showing the overall shape of a nail 100 according to an embodiment of the present invention, FIG. 2 is a view showing a nail 100 inserted into the femur 1, and FIG. 3 is an embodiment of the present invention. An exploded perspective view of a nail 100 according to an example, and FIG. 4 is a view showing a cross-sectional shape of the nail 100 according to an embodiment of the present invention. Here, Figs. 1 (a), 3 (a) and 4 (a) show a case where the orientation angle between the nail body 110 and the first screw 120 and the second screw 130 is α1, 1(b), 3(b), and 4(b) show a case where the orientation angle between the nail body 110 and the first screw 120 and the second screw 130 is α2.

In the present invention, the numerical values of the orientation angle α1 and the orientation angle α2 are different from each other, and the orientation angle α1 may be 125° and the orientation angle α2 may be 130°, but is not limited thereto, and a preferred angle is selected according to the shape of the human femur. can be

1 and 2 , a nail 100 according to an embodiment of the present invention may be inserted into a human femur 1 .

The femur (1) has a femoral head (2) coupled to the acetabulum of the pelvis, a femoral neck (3) extending downward from the femoral head (2), and a gap between the femoral head (2) in the femoral neck (3) The greater trochanter 4 of the femur protruded to have a substantially Y-shape, and the greater trochanter 5 of the femur protruding in the opposite direction to the greater trochanter 4 and the lesser trochanter of the femur 5 in the vertical direction. It consists of an extended thigh (6).

Meanwhile, the nail 100 includes a nail body 110 , a first screw 120 , a second screw 130 , a third screw 140 , a fourth screw 150 , and a cap unit 160 .

The nail body 110 may be inserted into the femur 1 in a vertical direction. In more detail, the nail body 110 may be inserted in the vertical direction from the upper portion of the greater trochanter 4 to the femur 6 .

The first screw 120 may pass through the nail body 110 and be inclinedly inserted into the femur 1 in the first direction or the second direction. In more detail, the first screw 120 is inserted from the lower part of the great trochanter 4 of the femur, passes through the nail body 110, and then inclined into the upper part of the femur (femoral neck 3 and femoral head 2). It can be inserted to fix the upper part of the nail body 110 . In addition, when the orientation angle between the nail body 110 and the first screw 120 is α1 as shown in FIGS. 1 (a), 3 (a) and 4 (a), the first screw 120 is the nail It can be inserted obliquely in the first direction (X1 axis direction of the first direction) through the body 110 and the inside of the femur 1, and FIGS. 1 (b), 3 (b) and 4 (b) and Similarly, when the orientation angle between the nail body 110 and the first screw 120 is α2, the first screw 120 passes through the nail body 110 and enters the femur 1 in a second direction different from the first direction. It may be inserted obliquely in two directions (X1 axis direction among the second directions).

The second screw 120 may be spaced apart from the first screw 120 , and may pass through the nail body 110 and be inclinedly inserted into the femur 1 in the first direction or the second direction.

In this case, the second screw 130 may be positioned below the first screw 120 with respect to the femoral head 2 of the femur 1 .

More specifically, it is inserted from the lower portion of the great trochanter 4 of the femur so as to be spaced apart from the first screw 120, passes through the nail body 110, and then is inserted obliquely into the femoral neck 3 and the femoral head 2 and rotation of the nail body 110 can be prevented. In addition, when the orientation angle between the nail body 110 and the second screw 130 is α1 as shown in FIGS. 1 (a), 3 (a) and 4 (a), the second screw 130 is the nail It can be inserted obliquely in the first direction (X2 axis direction of the first direction) through the body 110 and the inside of the femur 1, and FIGS. 1 (b), 3 (b) and 4 (b) and Likewise, when the orientation angle between the nail body 110 and the second screw 130 is α2, the second screw 130 passes through the nail body 110 and enters the femur 1 in a second direction different from the first direction. It may be inserted obliquely in two directions (X2 axis direction among the second directions).

1 to 4 , the nail body 110 includes a main channel 111 , a first insertion hole 112 , and a second insertion hole 113 .

A nail insertion mechanism 200 (refer to FIG. 6 ) for inserting the nail body 110 into the femur 1 may be coupled to the main channel 111 , and the main channel 111 may be vertically disposed inside the nail body 110 . direction can be formed.

The first insertion hole 112 may be formed through the main channel 111 to be inclined in the first direction or the second direction inside the nail body 110 , and the first insertion hole 112 has the first screw 120 may be inserted.

The second insertion hole 113 may be formed through the main channel 111 to be inclined in the first direction or the second direction inside the nail body 110, and may be spaced apart from the first insertion hole 112 in the vertical direction. and the second screw 130 may be inserted into the second insertion hole 113 .

The first screw 120 is formed at one end of the first screw 120 and has a threaded end 122 inserted into the upper portion of the femur 1 (femoral head 2), and the first screw 120 . It includes an internal thread 124 formed inside the first screw 120 near the other end and a groove 126 formed at the other end of the first screw 120 .

A protrusion Xa of a fastening mechanism X (refer to FIG. 17 ) for rotating the first screw 120 may be coupled to the groove 126 .

5 is a detailed view showing the second screw 130 provided in the nail 100 of the present invention.

1 to 5 , the second screw 130 includes a first thread 132 , a second thread 134 , a third thread 136 , and a step portion 138 .

The first thread 132 is formed at one end of the second screw 130 and may be inserted into the upper portion of the femur 1 (femoral head 2 and femoral neck 3).

The second thread 134 is connected to the first thread 132 , has a larger diameter than the first thread 132 , and may be fastened to the nail body 110 . At this time, a thread may be formed on the inner circumferential surface of the second insertion hole 113 into which the second screw 130 is inserted so as to correspond to the screw thread formed on the outer circumferential surface of the second thread 134 .

The third thread 136 is connected to the second thread 134 , and may be formed to have a larger diameter than the second thread 134 . At this time, the third thread 136 may be inserted into the lower portion of the femoral great trochanter (4).

The step portion 138 is formed between the second thread 134 and the third thread 136 and may be fixed to the second insertion hole 113 (see FIGS. 2 and 18 ). As described above, the second screw 130 is loosened by providing the stepped portion 138 between the second thread 134 and the third thread 136 and fixing the stepped portion 138 to the second insertion hole 113 . can prevent

The diameters of the first thread 132 , the second thread 134 , and the third thread 136 may refer to the outer diameters of the first thread 132 , the second thread 134 , and the third thread 136 , respectively. have.

Referring back to FIG. 5 , the relationship between the diameter r3 of the third thread 136 > the diameter r2 of the second thread 134 > the diameter r1 of the first thread 132 is established.

Referring to the enlarged parts A, B, and C of FIG. 5 , the pitch of the threads formed on the outer peripheral surface of the first thread 132 (d1) and the pitch of the threads formed on the outer peripheral surface of the third thread 136 (d3) may be equal to each other. In this case, the pitch means a distance between a screw thread and a screw thread in a male screw.

In addition, the pitch d2 of the threads formed on the outer circumferential surface of the second thread 134 is the pitch d1 of the threads formed on the outer circumferential surface of the first thread 132 and the pitch of the threads formed on the outer circumferential surface of the third thread 136 . (d3) may be narrower.

As described above, according to the nail 100 of the present invention, the first screw 120 and the second screw 130 are configured to be inserted into the femur 1 so as to be spaced apart, and the second screw 130 has a diameter of each other. Different, the pitch of the threads formed on the outer circumferential surface of the second thread 134 is narrower than that of the first thread 132 and the third thread 136, so that the fastening force of the nail 100 to the femur 1 is increased. can be improved

1 to 4 , the nail body 110 further includes a screw insertion part 114 formed in a vertical direction inside the proximal end of the nail body 110 . In this case, the proximal end of the nail body 110 may be the end of the main channel 111 .

At this time, the third screw 140 constraining the movement of the first screw 120 in the first direction or the second direction may be inserted into the screw insertion part 114 , and the third screw 140 may One end portion is inserted into the recessed portion 128 formed on the outer circumferential surface of the screw 120 (see FIGS. 4 and 19 ), thereby constraining the movement of the first screw 120 in the first direction or the second direction.

1 to 4 , the nail body 110 further includes a third insertion hole 115 formed through the main channel 111 in a horizontal direction perpendicular to a vertical direction inside the nail body 110 . do.

The third insertion hole 115 is formed near the distal end of the nail body 110, and the third insertion hole 115 penetrates the nail body 110 and the femur (1, specifically, the femur 6). At least one fourth screw 150 may be inserted in the horizontal direction.

Illustratively, the fourth screw 150 may be provided as two as shown in FIGS. 1 to 4, but is not limited thereto, and may be provided as one according to the characteristics of the human femur 1, or three or more. may be provided as

On the other hand, in the embodiment illustrated in FIGS. 1 to 4 , two third insertion holes 115 may be formed vertically spaced apart from each other in the vertical direction near the distal end of the nail body 110 , and the fourth screw 150 . ) Also, two are arranged to be vertically spaced apart from each other in the vertical direction of the nail body 110 , and may be respectively inserted into the third insertion hole 115 in the horizontal direction (X3 axis direction). Accordingly, the fourth screw 150 may fix the lower portion of the nail body 110 .

1 to 4 , the cap part 160 may be coupled to the proximal end of the nail body 110 . The cap 160 may prevent foreign substances from entering the main channel 111 of the nail body 110 by sealing the proximal end of the nail body 110 .

6 is a view showing the overall shape of the nail insertion device 200 according to an embodiment of the present invention, and FIG. 7 is a view showing the cross-sectional shape of the nail insertion device 200 according to an embodiment of the present invention, 8 is an exploded perspective view of the nail insertion device 200 according to an embodiment of the present invention. Here, FIG. 7 exemplarily shows a case where the orientation angle of the sleeve is 125°, and in FIG. 8 , the illustration of the angle adjustment guide part 234 , the support part 237 , and the ring part 238 to be described later will be omitted.

6 to 8 , the nail insertion device 200 (insertion device of nail) according to an embodiment of the present invention may be a device for inserting and fastening the nail 100 to the human femur 1 . have.

In detail, the nail insertion mechanism 200 includes a handle part 210 , a nail connection part 220 , and a sleeve orientation angle adjustment part 230 .

The handle part 210 is The sleeve orientation angle adjusting part 230 includes a handle body 212 inserted therein, and an extension part 214 having one end coupled to the handle body 212 and the other end coupled to the nail connection part 220 . As an example, the handle body 212 may be hollow.

At this time, the coupling between the handle body 212 and the extension part 214 may be made through screw coupling, and the extension part 214 may be formed in a curved shape as shown in FIGS. 6 to 8 , and elastic force and It may be formed of a material having good strength, but is not limited thereto.

One end of the nail connection unit 220 may be coupled to the handle unit 210 , and the other end may be coupled to the nail 100 . In more detail, the extension part 214 may be coupled to one end of the nail connection part 220 .

In addition, the nail connection part 220 includes an insertion hole 222 into which an insertion mechanism (not shown) for inserting the nail 100 into the femur 1 is inserted, and a nail coupling part 224 coupled to the nail 100 . . At this time, the nail coupling part 224 may be coupled to the proximal end of the nail body 110 .

When inserting the nail 100 into the femur (1), the skin of the greater trochanter (4) of the femur is cut and drilled in the vertical direction from the upper part of the greater trochanter (4) to the femur (6) to the femur (1) A hole through which the nail body 110 of the nail 100 can be inserted in the vertical direction may be formed therein. After the hole is formed, an insertion device (not shown) can insert the nail body 110 of the nail 100 into the femur 1 through the insertion hole 222 (see FIGS. 6, 7 and 16). .

9 is a view showing the sleeve orientation angle adjusting unit 230 provided in the nail insertion device 200 of the present invention. In FIG. 9, the illustration of the rotation preventing part 235, which will be described later, is omitted.

6 to 9 , the sleeve orientation angle adjusting part 230 is coupled to the handle part 210 and may adjust the orientation angle of at least one sleeve (not shown) used for nail fastening. As an example, the sleeve may be configured to guide the insertion of the first screw 120 , the second screw 130 , and the fourth screw 150 into the nail 100 described above, and may be formed in a hollow hollow shape. and in detail The sleeve includes a first sleeve (S1) for guiding the insertion of the first screw (120), a second sleeve (S2) for guiding the insertion of the second screw (130), and a second sleeve (S2) for guiding the insertion of the fourth screw (150). 3 sleeve S3. In this case, one or two or more third sleeves S3 may be provided to correspond to the number of the fourth screws 150 .

In more detail, the sleeve orientation angle adjusting unit 230 includes a shaft 231 , a sleeve locking unit 232 , a sleeve locking nut 233 , an angle adjustment guide unit 234 , and a rotation preventing unit 235 . and an elastic part 236 and a support part 237 .

The shaft 231 is inserted into and coupled to the handle body 212 , and includes an enlarged diameter portion 231a and a reduced diameter portion 231b having a diameter smaller than that of the enlarged diameter portion 231a.

The sleeve locking part 232 is formed at the end of the enlarged diameter part 231a and may rotate the shaft 231 .

The sleeve locking nut 233 is coupled to one end of the outer circumferential surface of the handle body 212 by the sleeve locking part 232 , and may apply a force so that the sleeve is fixed to the handle body 212 and the shaft 231 .

The angle adjustment guide part 234 is coupled to the end of the reduced diameter part 231b, and the protrusion 234a rotates in the same direction (eg, clockwise) as the rotation direction of the shaft 231 according to the rotation of the shaft 231 ). includes

One side of the anti-rotation part 235 is coupled to the extension part 214 , and the other side is inserted into the angle adjustment guide part 234 , and may prevent movement of the protrusion part 234a.

The elastic part 236 is coupled to the outer circumferential surface of the reduced diameter part 231b, and when the shaft 231 is advanced and rotated in the handle body 212, the elastic restoring force is applied in the opposite direction to the direction in which the shaft 231 is inserted. can apply As an example, the elastic part 236 may be a spring, but is not limited thereto.

The support part 237 is coupled to the outer circumferential surface of the reduced diameter part 231b and is positioned between the angle adjustment guide part 234 and the elastic part 236 , and may support the elastic restoring force of the elastic part 236 . As an example, the support 237 may be a washer, but is not limited thereto.

10 and 11 are views showing a state in which the orientation angle of the sleeve fixing hole is adjusted according to the rotation of the shaft 231 provided in the sleeve orientation angle adjusting unit 230 of the present invention. Here, FIG. 10 shows a case where the orientation angle of the first sleeve S1 and the second sleeve S2 is α1, and FIG. 11 shows a case where the orientation angle of the first sleeve S1 and the second sleeve S2 is α2. indicates The orientation angles α1 and α2 shown in FIGS. 10 and 11 may correspond to the orientation angles α1 and α2 between the first screw 120 and the second screw 130 described above. In addition, the numerical values of the orientation angle α1 and the orientation angle α2 are different from each other, and the orientation angle α1 may be 125° and the orientation angle α2 may be 130°, but is not limited thereto, and a preferred angle is selected according to the shape of the human femur. can be

10 and 11, the shaft 231 is formed through the inside of the enlarged diameter portion 231a, and guides the first sleeve (S1, see FIG. 15) so as to be inclined in the first direction of the femur (1). It includes a first sleeve fixing hole (H1a) and a second sleeve fixing hole (H1b) for guiding the first sleeve (S1) to be inclined in the second direction of the femur (1).

In addition, the shaft 231 is formed through the inside of the enlarged diameter portion 231a, and a third sleeve fixing hole for guiding the second sleeve (S2, see FIG. 15) so as to be inclined in the first direction of the femur (1) ( H2a) and a fourth sleeve fixing hole (H2b) for guiding the second sleeve (S2) to be inclined in the second direction of the femur (1).

10 and 11, the above-described first insertion hole 112, the first sleeve fixing hole (H1a), and the second sleeve fixing hole (H1b) are each coaxially oriented according to the rotation of the shaft 231. The second insertion hole 113, the third sleeve fixing hole H2a, and the fourth sleeve fixing hole H2b may also be oriented coaxially according to the rotation of the shaft.

The first sleeve fixing hole H1a and the second sleeve fixing hole H1b are configured to guide the insertion of the first screw 120 into the nail 100 so that the orientation angle of the first sleeve S1 is adjusted. 231) may have different orientation angles with respect to the handle body 212 and the shaft 231 depending on the rotation angle (eg, 90° clockwise rotation, 180° rotation).

For example, in the case shown in FIG. 10 , the handle body 212 is inclined so that the first sleeve fixing hole H1a is inclined in the first direction at a first rotation angle (rotation of 90° clockwise) according to the rotation of the shaft 231 . ) and the shaft 231 may be oriented at an angle of α1 , so that the first sleeve S1 may have an orientation angle of α1 . On the other hand, in the case shown in FIG. 11 , the handle body 212 is inclined so that the second sleeve fixing hole H1b is inclined in the second direction at the second rotation angle (clockwise 180° rotation) according to the rotation of the shaft 231 . and may be oriented at an angle of α2 with respect to the shaft 231 , such that the first sleeve S1 may have an orientation angle of α2.

In addition, the third sleeve fixing hole H2a and the fourth sleeve fixing hole H2b are configured to guide the insertion of the second screw 130 into the nail 100 so that the orientation angle of the second sleeve S2 is adjusted. Depending on the rotation angle of the shaft 231 (eg, 90° clockwise rotation, 180° rotation), it may have a different orientation angle with respect to the handle body 212 and the shaft 231 .

For example, in the case shown in FIG. 10 , the handle body 212 is inclined so that the third sleeve fixing hole H2a is inclined in the first direction at a first rotation angle (rotation of 90° clockwise) according to the rotation of the shaft 231 . ) and the shaft 231 at an angle of α1, so that the second sleeve S2 can have an angle of orientation of α1. On the other hand, in the case shown in FIG. 11 , the handle body 212 is inclined so that the fourth sleeve fixing hole H2b is inclined in the second direction at the second rotation angle (clockwise 180° rotation) according to the rotation of the shaft 231 . and may be oriented at an angle of α2 with respect to the shaft 231 , so that the second sleeve S2 may have an orientation angle of α2 .

10 and 11 again, the handle body 212 includes a first hole portion 213a1 communicating with the first sleeve fixing hole H1a, and a second hole portion 213a2 communicating with the second sleeve fixing hole H1b. ), a third hole portion 214b1 communicating with the third sleeve fixing hole H2a and a fourth hole portion 214b2 communicating with the fourth sleeve fixing hole H2b.

For example, in the case shown in FIG. 10 , the handle body 212 is inclined so that the first sleeve fixing hole H1a is inclined in the first direction at a first rotation angle (rotation of 90° clockwise) according to the rotation of the shaft 231 . ) and the shaft 231 may be oriented at an angle of α1, and the first sleeve S1 has an orientation angle of α1, and passes through the first sleeve fixing hole H1a and the first hole portion 213a1. 1 It can guide the insertion of the screw 120 . On the other hand, in the case shown in FIG. 11 , the handle body 212 is inclined so that the second sleeve fixing hole H1b is inclined in the second direction at the second rotation angle (clockwise 180° rotation) according to the rotation of the shaft 231 . And it may be oriented at an angle of α2 with respect to the shaft 231, the first sleeve S1 has an orientation angle of α2, and passes through the second sleeve fixing hole H1b and the second hole portion 213a2. Insertion of the screw 120 may be guided.

In addition, in the case shown in FIG. 10 , the handle body 212 is inclined so that the third sleeve fixing hole H2a is inclined in the first direction at the first rotation angle (clockwise 90° rotation) according to the rotation of the shaft 231 . and may be oriented at an angle of α1 with respect to the shaft 231, the second sleeve S2 has an orientation angle of α1, and passes through the third sleeve fixing hole H2a and the third hole portion 214b1. Insertion of the screw 130 may be guided. On the other hand, in the case shown in FIG. 11 , the handle body 212 is inclined so that the fourth sleeve fixing hole H2b is inclined in the second direction at the second rotation angle (clockwise 180° rotation) according to the rotation of the shaft 231 . And it may be oriented at an angle of α2 with respect to the shaft 231, the second sleeve S2 has an orientation angle of α2, and passes through the fourth sleeve fixing hole H2b and the fourth hole portion 214b2. Insertion of the screw 130 may be guided.

Referring back to FIGS. 10 and 11 , the shaft 231 is formed through the inside of the enlarged diameter part 231a and guides the third sleeve (S3, see FIG. 20 ) in the horizontal direction perpendicular to the vertical direction. It further includes a fifth sleeve fixing hole (H3a) and a sixth sleeve fixing hole (H3b).

At this time, with reference to FIGS. 10 and 11 , the third insertion hole 115 , the fifth sleeve fixing hole H3a , and the sixth sleeve fixing hole H3b are coaxial with the rotation of the shaft 231 , respectively. can be oriented.

The fifth sleeve fixing hole H3a and the sixth sleeve fixing hole H3b may be configured to insert a third sleeve S3 configured to guide the insertion of the fourth screw 150 into the nail 100, , Unlike the first to fourth sleeve fixing holes (H1a, H1b, H2a, H2b) described above, regardless of the rotation of the shaft 231 (eg, 90° clockwise rotation, 180° rotation) in the horizontal direction (X3 axis) direction) can be oriented.

For example, in the case shown in FIG. 10 , the fifth sleeve fixing hole H3a may be oriented in the horizontal direction at the first rotation angle (rotation of 90° clockwise) according to the rotation of the shaft 231, and thus Accordingly, the third sleeve S3 may be inserted into the fifth sleeve fixing hole H3a in the horizontal direction to guide the insertion of the fourth screw 150 . Meanwhile, in the case shown in FIG. 11 , the sixth sleeve fixing hole H3b may be oriented in the horizontal direction at the second rotation angle (clockwise 180° rotation) according to the rotation of the shaft 231 , and accordingly The third sleeve S3 may be inserted into the sixth sleeve fixing hole H3b in the horizontal direction to guide the insertion of the fourth screw 150 .

10 and 11 again, the handle body 212 further includes a fifth hole portion 215c communicating with the fifth sleeve fixing hole H3a and the sixth sleeve fixing hole H3b. As an example, one or two or more fifth hole portions 215c may be provided to correspond to the number of the third sleeve S3 and the fourth screw 150 .

For example, in the case shown in FIG. 10 , the fifth sleeve fixing hole H3a may be oriented in the horizontal direction at the first rotation angle (clockwise 90° rotation) according to the rotation of the shaft 231 , The third sleeve S3 may also be oriented in the horizontal direction, and may penetrate the fifth sleeve fixing hole H3a and the fifth hole portion 215c to guide the insertion of the fourth screw 150 . Meanwhile, in the case shown in FIG. 11 , the sixth sleeve fixing hole H3b may be oriented in the horizontal direction at the second rotation angle (clockwise 180° rotation) according to the rotation of the shaft 231 , and the third sleeve (S3) may also be oriented in the horizontal direction and guide the insertion of the fourth screw 150 through the sixth sleeve fixing hole H3b and the fifth hole portion 215c.

12 is a view showing the action of the angle adjustment guide portion 234 and the rotation prevention portion 235 provided in the sleeve orientation angle adjustment portion 230 of the present invention. For convenience of explanation, in FIG. 12 , illustration of other members except for the angle adjustment guide part 234 and the rotation preventing part 235 will be omitted as much as possible.

6 to 12, as described above, the angle adjustment guide part 234 provided in the sleeve orientation angle adjustment part 230 of the present invention is coupled to the end of the reduced diameter part 231b, and the shaft 231. It includes a protrusion 234a rotated in a clockwise direction according to the rotation of the.

In addition, the anti-rotation part 235 may be configured such that one side is coupled to the extension part 214 , the other side is inserted into the angle adjustment guide part 234 , and prevents movement of the protrusion part 234a.

More specifically, the rotation preventing portion 235 includes a first engaging portion 235a, a second engaging portion 235b, and a third engaging portion 235c, each of the first engaging portion 235a, the first engaging portion (235a). The second locking part 235b and the third locking part 235c may be formed in a concave groove shape with respect to the radial direction to accommodate the protrusion 234a provided in the angle adjustment guide part 234 . Preferably, as shown in FIG. 12 , the angle between the first locking part 235a and the second locking part 235b may be 90°, and the second locking part 235b and the third locking part 235c ) may be 90°, and the angle between the first locking part 235a and the third locking part 235c may be 180°.

In addition, a connection portion between the first locking part 235a, the second locking part 235b, and the third locking part 235c may be formed in a streamlined shape.

12(a) of FIG. 12 shows a state in which the shaft 231 is first inserted into the handle body 212, and the user (or operator) pushes the shaft 231 into the handle body 212 by pushing the shaft ( 231 may be inserted into the handle body 212 .

As shown in FIG. 12( a ), the first locking part 235a may prevent the protrusion 234a from moving when the shaft 231 is inserted into the handle body 212 .

12(b) of FIG. 12 shows the state when the shaft 231 is rotated at the first rotation angle, and in the state of FIG. 12(a), the user (or operator) moves the shaft 231 to the handle body ( 212) while pushing the shaft 231 forward to separate from the first locking part 235a, and then rotating it at a first rotation angle (clockwise 90°), the protrusion according to the rotation of the shaft 231 (234a) may also be rotated at a first rotation angle (clockwise 90°), and the shaft 231 is moved backward by the elastic restoring force of the elastic portion 236 that was compressed by the forward movement of the shaft 231 while the protrusion ( 234a) may be seated on the second locking part 235b.

As shown in FIG. 12(b) , the second locking portion 235b has a first rotation angle (clockwise 90°) from a state in which the protrusion 234a is first inserted into the handle body 212 by the shaft 231 . ) when rotated, it is possible to prevent the movement of the protrusion (234a).

On the other hand, as described above in the state of Fig. 12 (b) (corresponding to the state of Fig. 10 described above), the first sleeve fixing hole ( H1a) and the third sleeve fixing hole H2a may be oriented to be inclined in the first direction. In addition, in the state of FIG. 12( b ), the fifth sleeve fixing hole H3a may be oriented in the horizontal direction.

12(c) of FIG. 12 shows a state when the shaft 231 is rotated at a second rotation angle, and in the state of FIG. 212) while pushing the shaft 231 forward to separate from the second locking part 235b, and then, when the shaft 231 is rotated clockwise by 90° more than the state of FIG. 2 rotation angle), the protrusion 234a may also be rotated clockwise by 90° according to the rotation of the shaft 231 (rotated at the second rotation angle), and compressed by the advancement of the shaft 231 As the shaft 231 moves backward by the elastic restoring force of the elastic part 236 , the protrusion 234a may be seated on the third locking part 235c.

As shown in FIG. 12( c ), the third locking portion 235c has a second rotation angle (clockwise 180°) from the state in which the protrusion 234a is first inserted into the handle body 212 by the shaft 231 . ) when rotated, it is possible to prevent the movement of the protrusion (234a).

On the other hand, as described above in the state of FIG. 12(c) (corresponding to the state of FIG. 11 described above), the second sleeve fixing hole ( H1b) and the fourth sleeve fixing hole H2b may be oriented. In addition, in the state of FIG. 12( c ), the sixth sleeve fixing hole H3b may be oriented in the horizontal direction.

As described above, the first sleeve fixing hole H1a and the second sleeve fixing hole H1b when the protrusion 234a is positioned on the second locking part 235b and when the third locking part 235c is positioned. The orientation angles of α1 and α2 may be different from each other, respectively.

In addition, the orientation of the third sleeve fixing hole H2a and the fourth sleeve fixing hole H2b when the protrusion 234a is positioned on the second locking part 235b and when it is positioned on the third locking part 235c The angles may be different from each other, α1 and α2, respectively.

According to the nail insertion device 200 of the present invention, by configuring the sleeve orientation angle adjusting unit 230 provided in the nail insertion device 200 to adjust the orientation angle of the sleeve used when the nail 100 is fastened, various A nail insertion mechanism 200 capable of selecting a fastening angle may be provided.

13 is a view showing the action of the sleeve locking part 232 and the sleeve locking nut 233 provided in the sleeve orientation angle adjusting part 230 of the present invention, and FIG. 14 is a nail insertion mechanism 200 of the present invention. It is a view showing through the sleeve locking nut 233 near one end of the outer peripheral surface of the provided handle body 212 . 13 (a) of FIG. 13 is a view showing a state in which the sleeve locking nut 233 is coupled to one end of the outer circumferential surface of the handle body 212, and FIG. 13 (b) is the sleeve locking nut to the handle body 212. It is a diagram showing the state before coupling (233).

13 and 14 , the aforementioned sleeve locking part 232 is formed at the end of the enlarged diameter part 231a and may rotate the shaft 231 . In addition, the sleeve locking nut 233 is coupled to one end of the outer circumferential surface of the handle body 212 by the sleeve locking part 232 , and may apply a force so that the sleeve is fixed to the handle body 212 and the shaft 231 .

More specifically, the sleeve locking part 232 is formed to have a larger diameter than the bolt part 232a and the bolt part 232a, which are threaded on the outer circumferential surface to rotate the sleeve locking nut 233, and the shaft 231 is formed. It includes a rotating grip portion (232b). Although not shown, a thread may be formed on a portion of the inner circumferential surface of the sleeve locking nut 233 to correspond to the bolt portion 232a of the sleeve locking portion 232 . In addition, the user (or the operator) may advance or rotate the shaft 231 while holding the gripping part 232b of the sleeve locking part 232 .

13 and 14, the sleeve locking nut 233 is seated on the outer peripheral surface of the ring part 238 inserted into the ring insertion groove 212a formed on the outer peripheral surface of one end of the handle body 212, the ring guide groove 233a and and a pin portion 233b seated in the pin insertion groove 212b of the handle body 212 formed to be spaced apart from the ring insertion groove 212a in a vertical direction. As an example, the ring portion 238 may be a C-shaped C-ring, but is not limited thereto. In addition, the pin portion 233b may be formed to protrude in the inner direction of the sleeve locking nut 233 and may be integrally formed by welding to the body of the sleeve locking nut 233 , but is not limited thereto.

Referring to FIG. 13 (a) of FIG. 13 , the user (or operator) tightens the bolt part 232a of the sleeve locking part 232 while pushing the gripping part 232b of the sleeve locking part 232 with the sleeve locking nut 233 . ), and while rotating the sleeve locking nut 233 through the gripper 232b, the sleeve locking nut 233 can be coupled to the outer peripheral surface of one end of the handle body 212 as shown in FIG. 13 (a). have.

At this time, a guide groove 233a is formed on the inner circumferential surface of the sleeve locking nut 233 as shown in the enlarged cross-sectional view of FIG. 233a) is seated on the ring part 238 to prevent the sleeve locking nut 233 from being separated from the handle body 212 in the vertical direction while the sleeve locking nut 233 is fastened to the handle body 212. . In addition, as shown in the enlarged cross-sectional view of FIG. 13(a) and FIG. 14, the pin part 233b is seated in the pin insertion groove 212b of the handle body 212b so that the pin part 233b is connected to the sleeve locking nut 233. By restricting the rotation of the sleeve locking nut 233 from the handle body 212 in a state in which the sleeve locking nut 233 is coupled to the handle body 212 can be prevented.

On the other hand, referring to the enlarged cross-sectional view of FIG. 13A and FIG. 14 , the handle body 212 is connected to the pin insertion groove 212b, and the pin portion 233b of the sleeve locking nut 233 is inserted into the pin insertion groove ( When separated from 212b) and moved in the vertical direction, the pin portion 233b of the sleeve locking nut 233 is inserted and the sleeve locking nut 233 rotates along the outer circumferential surface of the handle body 212 . (212c) and the rotation groove (212c) and is formed to protrude outward in the radial direction of the handle body 212 to prevent separation of the sleeve locking nut 233 from the handle body 212 in the vertical direction. (212d).

Since the pin part 233b is not restrained in the state shown in FIG. 13(b) by the configuration of the rotation groove 212c, the sleeve locking nut 233 can rotate freely. In addition, when the sleeve locking nut 233 moves in the vertical direction in a state in which the sleeve locking nut 233 is not coupled to the handle body 212 as shown in FIG. 13(b) by the stepped portion 212d configuration Since the pin portion 233b is caught by the stepped portion 212d, the separation of the sleeve locking nut 233 from the handle body 212 in the vertical direction can be prevented.

15 is a view showing a mechanism for fixing the sleeve to the nail insertion mechanism 200 of the present invention. 15(a) of FIG. 15 shows a mechanism for fixing the first sleeve S1, and FIG. 15(b) of FIG. 15 shows a mechanism for fixing the second sleeve S2.

Referring to FIG. 15A , the first sleeve S1 used for inserting the first screw 120 into the nail 100 is inserted into the handle body 212 and the shaft 231 is shown. .

As described above in the state of Figure 15 (a), the user (or the operator) pushes the gripping part 232b of the sleeve locking part 232 and tightens the bolt part 232a of the sleeve locking part 232 with the sleeve locking nut ( 233), and while rotating the sleeve locking nut 233 through the gripper 232b, the sleeve locking nut 233 is coupled to the outer peripheral surface of one end of the handle body 212 as shown in FIG. 13(a). can

At this time, as shown in Fig. 15 (a), the first force according to the forward movement of the shaft 231 and the rotation of the sleeve locking nut 233 (tightening of the sleeve locking nut 233) is applied to the first sleeve S1. The second force is applied to the first sleeve S1 in the opposite direction to the force generated by the forward movement of the shaft 231 and the rotation of the sleeve locking nut 233 by the elastic restoring force of the elastic part 236. can work Accordingly, the first sleeve S1 may be fixed to the handle body 212 and the shaft 231 .

Also, referring to FIG. 15(b) , a state in which the second sleeve S2 used to insert the second screw 130 into the nail 100 is inserted into the handle body 212 and the shaft 231 is shown. The process of fixing the second sleeve (S2) is the same as the process described with reference to FIG. 15 (a) except for fixing the second sleeve (S2) to the handle body 212 and the shaft 231. A detailed description thereof will be omitted.

On the other hand, although not shown in FIG. 15 , the mechanism for fixing the third sleeve S3 may also be implemented in the same manner as the mechanism for fixing the first sleeve S1 or the second sleeve S2 described above, a detailed description thereof should be omitted.

As described above, in the nail insertion mechanism 200 of the present invention, the sleeve locking part 232 and the sleeve locking nut 233 are provided so that the sleeve used when the nail 100 is fastened is the handle body 212 and the shaft 231. It can be stably fixed to the , and thus accurate treatment can be performed.

Hereinafter, a process of inserting the nail 100 into the femur 1 will be described with reference to FIGS. 16 to 20 .

FIG. 16 is a view showing a process of inserting the nail body 110 into the femur 1 using the nail insertion mechanism 200 .

Referring to FIG. 16 , when inserting the nail 100 into the femur 1 as described above, the skin of the greater trochanter 4 of the femur is cut and the femur 6 is removed from the upper part of the greater trochanter 4 of the femur. By drilling in the vertical direction toward the femur 1, it is possible to form a hole through which the nail body 110 of the nail 100 can be inserted in the vertical direction. After the hole is formed, an insertion mechanism (not shown) may insert the nail body 110 of the nail 100 into the femur 1 through the insertion hole 222 of the above-described nail connection unit 220 .

17 is a view illustrating a process of inserting the first screw 120 into the nail body 110 .

As shown in FIG. 16 , after the nail body 110 is inserted into the femur 1 , the first screw 120 passes through the nail body 110 to the inside of the femur 1 as shown in FIG. 2 . It may be inserted obliquely in the first direction or the second direction.

In order to insert the first screw 120, the skin of the lower portion of the greater trochanter 4 of the femur is cut, and the first into the neck 3 of the femur from the lower portion of the greater trochanter 4 toward the head 2 of the femur. Drilling may be performed to pass through the insertion hole 112 .

17 (a) and 17 (b) of FIG. 17 , as described above, a groove portion 126 may be formed at the other end of the first screw 120 , and a fastening mechanism (X) in the groove portion 126 . ) of the protrusion (Xa) may be coupled. As an example, as shown in FIG. 17( c ), the number of the groove 126 and the protrusion Xa coupled thereto may be two, but is not limited thereto. In addition, the fastening mechanism (X) may be a driver (driver), but is not limited thereto.

Referring to FIG. 17(b) of FIG. 17 , after the first screw 120 is inserted into the nail body 110 , the inserted first screw 120 is separated from the nail body 110 and the femur 1 . A fastening mechanism (X) can be used to prevent this from happening.

In FIG. 17(b) , the protrusion Xa of the fastening mechanism X and the groove 126 of the first screw 120 are coupled, and then the screw portion of the fastening mechanism X is rotated by rotating the fastening mechanism X to the first The first screw 120 can be rotated to engage the internal thread 124 of the screw 120 so that the first screw 120 is fixed to the nail body 110 and the femur 1 .

Meanwhile, although not shown in detail, the first sleeve S1 may guide the insertion of the first screw 120 during the insertion of the first screw 120 into the nail body 110 . Specifically, drilling may be performed through the inside of the first sleeve (S1), and after drilling, the first screw 120 passes through the inside of the first sleeve (S1) through a separate guide configuration (not shown). may be inserted, and after the first screw 120 is inserted into the nail body 110 , the fastening mechanism X is inserted into the first screw 120 through the inside of the first sleeve S1 and the first screw (120) can be fastened.

18 is a view illustrating a process of inserting the second screw 130 into the nail body 110 .

After inserting the first screw 120 into the nail body 110 and the femur 1 as described above, as shown in FIG. 2 , the second screw 130 passes through the nail body 110 to the femur. (1) It can be inserted obliquely in the first direction or the second direction.

In order to insert the second screw 130, the skin of the lower portion of the greater trochanter 4 is cut, and the second into the femoral neck 3 from the lower portion of the greater trochanter 4 toward the femoral head 2 Drilling may be performed to pass through the insertion hole 113 . In addition, although not shown in detail, a separate fastening means (not shown) is used in the process of inserting the second screw 130 to rotate the second screw 130 so that the pitch formed on the outer circumferential surface of the second thread 134 is reduced. 2 The second screw 130 may be fastened to the nail body 110 by engaging the thread formed on the inner circumferential surface of the insertion hole 113 .

Meanwhile, although not shown in detail, the second sleeve S2 guides the insertion of the second screw 130 in the process of inserting the second screw 130 into the nail body 110 in a manner similar to that of the first sleeve S1 . can do.

Referring to FIG. 18 , the stepped portion 138 may be formed between the second thread 134 and the third thread 136 and be fixed to the second insertion hole 113 . As described above, the second screw 130 is loosened by providing the stepped portion 138 between the second thread 134 and the third thread 136 and fixing the stepped portion 138 to the second insertion hole 113 . can prevent

19 is a view illustrating a process of inserting the third screw 140 into the nail body 110 .

After the second screw 130 is inserted into the nail body 110 and the femur 1 as described above, as shown in FIG. 19 , the third screw 140 is inserted into the nail body 110 body. can make it happen

At this time, the third screw 140 may be inserted into the screw insertion portion 114 formed in the vertical direction inside the proximal end of the nail body 110 , and the third screw 140 may be inserted into the screw insertion portion 114 . When inserted into the first screw 120, the end portion is inserted into the recessed portion 128 formed on the outer circumferential surface, thereby constraining the movement of the first screw 120 in the first direction or the second direction.

20 is a view illustrating a process of inserting the fourth screw 150 into the nail body 110 . In this case, the illustration of the first screw 120 , the second screw 130 , and the third screw 140 described above in FIG. 20 will be omitted.

After inserting the third screw 140 into the nail body 110 as described above, as shown in FIG. 20 , the fourth screw 150 connects the nail body 110 and the femur 6 in the vertical direction It can be inserted through the vertical and horizontal direction.

In order to insert the fourth screw 150 , the skin of the thigh portion 6 may be cut, and drilling may be performed to pass through the third insertion hole 115 to penetrate the thigh portion 6 in a horizontal direction. In addition, although not shown in detail, a separate fastening means (not shown) is used in the process of inserting the fourth screw 150 to rotate the fourth screw 150 so that the fourth screw 150 is connected to the nail body 110 . And it can be fixed to the femur (1, specifically the femur (6)).

Meanwhile, although not shown in detail, the third sleeve S3 is inserted into the nail body 110 of the fourth screw 150 in a manner similar to that of the first sleeve S1 and the second sleeve S2 during the insertion process of the fourth screw. Insertion of 150 can be guided.

Meanwhile, in the embodiment of the present invention, the process of inserting the fourth screw 150 into the nail body 110 is not necessarily an essential process, and it is not necessary to insert the fourth screw 150 into the nail body 110 .

After the fourth screw 150 is inserted into the nail body 110, the cap 160 is coupled to the proximal end of the nail body 110 as shown in Figs. The stage can be sealed.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes and substitutions are possible within the scope that does not depart from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: Nail
110: nail body
120: first screw
130: second screw
140: third screw
150: fourth screw
160: cap
200: nail insertion device
210: handle part
220: nail connection part
230: sleeve orientation angle adjustment unit

Claims (15)

In the nail insertion device for fastening a nail to a human femur,
a handle portion including a handle body having a hollow shape;
a nail connecting portion having one end coupled to the handle portion and the other end coupled to the nail; and
and a sleeve orientation angle adjusting part coupled to the handle part including a shaft inserted into the handle body, and adjusting an orientation angle of at least one sleeve used when the nail is fastened according to the rotation of the shaft. nail insertion device. The method of claim 1,
The handle part,
The nail insertion device further comprising an extension having one end coupled to the handle body and the other end coupled to the nail connecting portion. The method of claim 1,
The shaft is
a first sleeve fixing hole for guiding the first sleeve so as to be inclined in a first direction at a first rotation angle according to the rotation of the shaft; and
a second sleeve fixing hole for guiding the first sleeve to be inclined in a second direction at a second rotation angle according to the rotation of the shaft;
An orientation angle of the first sleeve fixing hole and the second sleeve fixing hole is different from each other. 4. The method of claim 3,
The shaft is
a third sleeve fixing hole for guiding the second sleeve to be inclined in the first direction at a first rotation angle according to the rotation of the shaft; and
Further comprising a fourth sleeve fixing hole for guiding the second sleeve to be inclined in a second direction at a second rotation angle according to the rotation of the shaft,
An orientation angle of the third sleeve fixing hole and the fourth sleeve fixing hole is different from each other. 5. The method of claim 3 or 4,
The shaft is
a fifth sleeve fixing hole for guiding the third sleeve in a horizontal direction perpendicular to a vertical direction at a first rotation angle according to the rotation of the shaft; and
and a sixth sleeve fixing hole for guiding the third sleeve in the horizontal direction at a second rotation angle according to the rotation of the shaft. 4. The method of claim 3,
The handle body is
a first hole communicating with the first sleeve fixing hole; and
and a second hole communicating with the second sleeve fixing hole. 5. The method of claim 4,
The handle body is
a third hole communicating with the third sleeve fixing hole; and
The nail insertion mechanism further comprising a fourth hole communicating with the fourth sleeve fixing hole. 6. The method of claim 5,
The handle body is
The nail insertion mechanism further comprising a fifth hole communicating with the fifth sleeve fixing hole and the sixth sleeve fixing hole. 3. The method of claim 2,
The shaft is
diaphragm and
The nail insertion mechanism, characterized in that it further comprises a reduced diameter portion is formed smaller than the diameter of the enlarged portion. 10. The method of claim 9,
The sleeve orientation angle adjustment unit,
a sleeve locking part formed at the end of the enlarged diameter part and rotating the shaft;
a sleeve locking nut coupled to an outer circumferential surface of one end of the handle body by the sleeve locking unit and applying a force so that the sleeve is fixed to the handle body and the shaft;
an angle adjustment guide part coupled to an end of the reduced diameter part and including a protrusion part that is rotated in the same direction as the rotation direction of the shaft according to the rotation of the shaft; and
The nail insertion device, characterized in that one side is coupled to the extension portion, the other side is inserted into the angle adjustment guide portion, further comprising a rotation preventing portion for preventing the movement of the protrusion. 11. The method of claim 10,
The anti-rotation unit,
a first locking portion for preventing movement of the protrusion when the shaft is inserted into the handle body;
a second locking part for preventing movement of the protrusion at a first rotation angle according to the rotation of the shaft; and
and a third locking part for preventing movement of the protrusion at a second rotation angle according to the rotation of the shaft. 11. The method of claim 10,
The sleeve orientation angle adjustment unit,
an elastic part coupled to the outer circumferential surface of the reduced diameter part and applying an elastic restoring force in a direction opposite to the direction in which the shaft is inserted when the shaft is advanced and rotated in the handle body;
and a support part coupled to the outer circumferential surface of the reduced diameter part, positioned between the angle adjustment guide part and the elastic part, and supporting the elastic restoring force of the elastic part. 11. The method of claim 10,
The sleeve locking part,
a bolt portion having a thread formed on an outer circumferential surface to rotate the sleeve locking nut; and
The nail insertion device is formed to have a larger diameter than the bolt portion and includes a gripper for rotating the shaft. 11. The method of claim 10,
The sleeve locking nut,
a ring guide groove seated on the outer peripheral surface of the ring part which is inserted into the ring insertion groove formed on the outer peripheral surface of one end of the handle body; and
and a pin portion seated in the pin insertion groove of the handle body formed to be spaced apart from the ring insertion groove in a vertical direction. The method of claim 1,
The nail connection part,
an insertion hole into which an insertion device for inserting the nail into the femur is inserted; and
A nail insertion device comprising a nail coupling portion coupled to the nail.

Images