KR102230600B1 - Bone screw - Google Patents

Abstract

The present invention relates to a bone screw, the bone screw 1000 according to the present invention is formed in a cylindrical shape, inserted into the bone from one end and provided with a head 130 at the other end, the main body 100, the outer peripheral surface of the main body 100 It includes a spiral portion 200 extending in a spiral shape along the protrusion, and a tapping portion 300 formed by removing the spiral portion 200 along the longitudinal direction of the main body 100.

Description

Bone screw {BONE SCREW}

The present invention relates to a bone screw.

Fracture refers to a condition in which bone continuity is completely or incompletely lost due to external force. There are various treatments for fracture, but if it is severely fractured depending on the condition or area or requires rapid healing, a plate-shaped fixing plate made of artificial metal is adhered to the fracture area and then fixed to the bone using a fixing screw to support the bone Internal fixation is being used.

However, in the internal fixation treatment according to the prior art, when fixing the fixing plate to the bone using a fixing screw, it is difficult for the fixing screw to penetrate the bone, so it is necessary to puncture the bone in advance using a drill. Therefore, conventionally, there is a problem that the treatment process is complicated and the treatment time is also required.

KR 10-1094504 B1

The present invention is to solve the problems of the prior art described above, one aspect of the present invention relates to a bone screw capable of self-reinforcing or piercing bone by providing a tapping portion with a spiral portion removed.

The bone screw according to the embodiment of the present invention is formed in a cylindrical shape, and is inserted into the bone from one end and provided with a head at the other end, a helical part extending in a spiral along the outer circumferential surface of the body and protruding, and And a tapping portion formed by removing the spiral portion along the line.

In addition, in the bone screw according to an embodiment of the present invention, the tapping part includes a first tapping part formed by removing the spiral part from one end of the main body along the longitudinal direction of the main body.

In addition, in the bone screw according to an embodiment of the present invention, the first tapping portion includes a first surface formed perpendicular to the outer circumferential surface of the main body and a second surface formed perpendicular to the first surface.

In addition, in the bone screw according to the embodiment of the present invention, the first tapping portion is formed at each predetermined angle with respect to the central axis of the main body.

In addition, in the bone screw according to the embodiment of the present invention, the first tapping portion is formed from one end of the main body to a predetermined length.

In addition, in the bone screw according to an embodiment of the present invention, the second surface is a 2-1 surface extending to form a first angle with a central axis of the main body, and the second side toward one end direction of the main body. The second-second surface extending in a direction closer to the central axis of the main body from one end of the first surface, and inclined at a second angle greater than the first angle with the central axis of the main body, and It includes a 2-3 surface inclined in a direction away from the central axis of the main body from the other end.

In addition, in the bone screw according to the embodiment of the present invention, a distal end is formed at one end of the main body, and the spiral part is removed at the distal end to form the first tapping part, and at predetermined angles based on the central axis of the main body When two adjacent first tapping portions of the formed first tapping portions are defined as a 1-1 tapping portion and a 1-2 tapping portion, the first surface of the first-first tapping portion and the 1-2nd tapping portion The end of the second surface of the 1-2nd tapping part extends obliquely with respect to the central axis of the main body so that the second surface meets at the end of the distal end.

In addition, in the bone screw according to the embodiment of the present invention, a first region is defined from one end of the main body to a predetermined point of the main body, and a second area is defined from a predetermined point of the main body to before the head of the main body. When defined as an area, the diameter of the main body is constant in the first area, and the diameter of the main body increases in the direction of the head in the second area.

In addition, in the bone screw according to an embodiment of the present invention, the tapping portion includes a second tapping portion formed by removing a helical portion along a longitudinal direction of the body in the second region.

In addition, in the bone screw according to an embodiment of the present invention, the second tapping portion includes a third surface formed perpendicular to the outer circumferential surface of the main body and a fourth surface formed perpendicular to the third surface.

In addition, in the bone screw according to an embodiment of the present invention, the second tapping portion is formed at each predetermined angle with respect to the central axis of the main body.

In addition, in the bone screw according to an embodiment of the present invention, the second tapping portion is formed from the predetermined point of the second area to a point spaced apart from the head by a predetermined distance.

In addition, in the bone screw according to an embodiment of the present invention, the fourth surface is a surface 4-1 extending to form a predetermined angle with a central axis of the main body, and the 4-1 side toward one end direction of the main body. A 4-2 surface inclined away from the central axis of the main body from one end of the surface, and a 4-3 surface inclined away from the central axis of the main body from the other end of the 4-1 surface.

In addition, in the bone screw according to the embodiment of the present invention, the spiral portion has a constant pitch.

In addition, in the bone screw according to an embodiment of the present invention, a first region is defined from one end of the main body to a first predetermined point of the main body, and the second area of the main body is at a first predetermined point of the main body. When defining as a second area up to a predetermined point and as a third area from the second predetermined point of the main body to before the head of the main body, the diameter of the main body in the first area and the second area is In the third area, the diameter of the main body increases toward the head, and the spiral portion is formed in the first area and the third area except for the second area.

In addition, in the bone screw according to an embodiment of the present invention, the tapping part includes a third tapping part formed by removing a helical part along the longitudinal direction of the main body in the third area.

In addition, in the bone screw according to an embodiment of the present invention, the third tapping portion includes a fifth surface formed perpendicular to the outer circumferential surface of the main body and a sixth surface formed perpendicular to the fifth surface.

In addition, in the bone screw according to the embodiment of the present invention, the third tapping portion is formed at each predetermined angle with respect to the central axis of the main body.

In addition, in the bone screw according to an embodiment of the present invention, the third tapping portion is formed from the second predetermined point of the third area to a point spaced apart from the head by a predetermined interval.

In addition, in the bone screw according to the embodiment of the present invention, the sixth surface is a 6-1 surface extending to form a predetermined angle with the central axis of the main body, and the 6-1 side toward one end direction of the main body. And a 6-2 surface inclined away from the central axis of the main body from one end of the surface, and a 6-3 surface inclined in a direction away from the central axis of the main body from the other end of the 6-1 surface.

In addition, in the bone screw according to an embodiment of the present invention, the pitch of the spiral portion formed in the first area is larger than the pitch of the spiral portion formed in the third area.

In addition, in the bone screw according to an embodiment of the present invention, a through hole penetrated in a longitudinal direction is formed in the main body.

In addition, in the bone screw according to the embodiment of the present invention, a wire is inserted into the through hole.

Features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, terms or words used in the present specification and claims should not be interpreted in a conventional and dictionary meaning, and the inventor can appropriately define the concept of the term in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

According to the present invention, there is an advantage of self-reinforcing or piercing bones by providing a tapping portion with a spiral portion removed.

In addition, according to the present invention, by providing a region in which the diameter of the body increases toward the head, there is an effect of enhancing the coupling force between the bone screw and the bone.

In addition, according to the present invention, there is an advantage in that it is possible to press the fracture site by providing a helical portion having a different pitch.

1 to 2 are perspective views of a bone screw according to a first embodiment of the present invention,
3 to 4 are side views of the bone screw according to the first embodiment of the present invention,
5 to 6 are perspective views of a bone screw according to a second embodiment of the present invention,
7 to 8 are side views of a bone screw according to a second embodiment of the present invention,
9 to 10 are side views showing a process of using a bone screw according to a second embodiment of the present invention, and
11 to 17 are perspective views showing a process of using a bone screw according to the present invention.

Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments associated with the accompanying drawings. In adding reference numerals to elements of each drawing in the present specification, it should be noted that, even though they are indicated on different drawings, only the same elements are to have the same number as possible. In addition, terms such as "first" and "second" are used to distinguish one component from other components, and the component is not limited by the terms. Hereinafter, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 2 are perspective views of a bone screw according to a first embodiment of the present invention, and FIGS. 3 to 4 are side views of a bone screw according to a first embodiment of the present invention.

1 to 4, the bone screw 1000 according to the first embodiment of the present invention is formed in a cylindrical shape, inserted into the bone from one end, and the main body 100 provided with a head 130 at the other end , A helical part 200 extending in a spiral shape along the outer circumferential surface of the main body 100 and protruding, and a tapping part 300 formed by removing the helical part 200 along the longitudinal direction of the main body 100.

The body 100 is generally formed in a cylindrical shape, and a spiral portion 200 is formed on the outer circumferential surface. Here, the main body 100 has one end inserted into the bone and the head 130 is provided at the other end. At this time, a round end portion 140 may be formed at one end of the main body 100. That is, a distal end 140 of a round structure having a diameter decreasing toward the distal end may be formed at one end of the main body 100. By this distal portion 140 it is possible to more effectively reinforce or pierce the bone. In addition, since the distal portion 140 is round, mechanical stimulation may not occur in the surrounding soft tissue regardless of the angle of entry. In addition, a fastening hole 120 (refer to FIG. 1) may be formed in the head 130 provided at the other end of the main body 100 so that a mechanism for transmitting rotational force to the bone screw 1000 may be coupled. In this case, a protrusion protruding in the center direction may be formed in the fastening hole 120 at a predetermined angle, and a mechanism may be coupled to the protrusion. In addition, the body 100 may be formed with a through hole 110 penetrating in the longitudinal direction along the central axis (C). In this case, the through hole 110 may communicate with the fastening hole 120, and a wire 800 (see FIGS. 14 to 15) for guiding the bone screw 1000 may be inserted into the through hole 110. On the other hand, the main body 100 may change in diameter in a certain area. Specifically, as shown in FIG. 3A, from one end (end 140) of the main body 100 to a predetermined point of the main body 100 is defined as the first area A1, and From the point to the head 130 of the main body 100 may be defined as the second area A2. In this case, the diameter of the main body 100 in the first area A1 is constant, and the diameter of the main body 100 in the second area A2 may increase toward the head 130. In this way, when the diameter of the main body 100 increases toward the head 130 in the second area A2, the bonding force between the bone screw 1000 and the bone can be strengthened. .

The spiral portion 200 is a spirally extending and protruding along the outer circumferential surface of the main body 100, and serves to substantially implement a bonding force between the bone screw 1000 and the bone. Here, the spiral portion 200 may extend from one end (end 140) of the main body 100 to before the head 130 of the main body 100. In addition, the spiral portion 200 may have a uniform pitch (P, pitch) as a whole. However, the pitch of the spiral portion 200 is not necessarily constant, and may be different for each area as necessary.

The tapping part 300 (refer to FIGS. 1 to 2) is formed in a form in which the spiral part 200 is partially removed, and serves to substantially expand or pierce a bone. Here, the tapping part 300 may include a first tapping part 310 and a second tapping part 320. At this time, the first tapping portion 310 is formed by removing the spiral portion 200 along the longitudinal direction of the main body 100 from one end (end 140) of the main body 100, one end ( It may be formed to a predetermined length from the end portion 140. In addition, the first tapping portion 310 may be formed at a predetermined angle with respect to the central axis C of the main body 100. For example, three first tapping portions 310 may be formed every 120 degrees based on the central axis C of the body 100 (see FIG. 2 ). However, three first tapping portions 310 are not necessarily formed, and the number of first tapping portions 310 may be changed as necessary, such as two to five.

Specifically, looking at the first tapping part 310, as shown in FIG. 3A, the first tapping part 310 has a first surface 313 and a first surface 313 formed perpendicular to the outer circumferential surface of the main body 100. ) May include a second surface 315 formed perpendicular to it. Here, since the first surface 313 is formed perpendicular to the outer circumferential surface (that is, in a direction away from the central axis C of the main body 100), the first surface 313 is substantially the rotational direction of the main body 100 Is perpendicular to Accordingly, when the body 100 is rotated to couple the bone screw 1000 to the bone, the first surface 313 may serve to sharpen the bone. In addition, debris of the bone cut into the first surface 313 may be discharged through the second surface 315 formed perpendicular to the first surface 313. More specifically, the second surface 315 is the second-second surface 315. The first surface 315a, the 2nd-2nd surface 315b, and the 2-3rd surface 315c may be included. Here, the 2-1st surface 315a is the central axis C of the main body 100. ) And a first angle, For example, the 2-1 surface 315a may extend to become closer to the central axis C of the main body 100 as it goes toward one end of the main body 100. In this case, , The first angle is a relatively small value between 0 degrees and 10 degrees, and the inclination of the 2-1 surface 315a may be low. In addition, the 2-2 surface 315b has one end of the main body 100. It extends in a direction closer to the central axis (C) of the main body 100 from one end (end in the direction toward the end 140) of the 2-1 side 315a on the direction side, and the central axis (C) of the main body 100 ) And may be inclined at an angle greater than the first angle. For example, the second angle is a relatively large value between 30 and 60 degrees greater than the first angle, and the inclination of the 2-2 plane 315b is In addition, the 2-3rd surface 315c is inclined in a direction away from the central axis C of the main body 100 from the other end of the 2-1 surface 315a (the end toward the head 130). At this time, the 2-3rd surface 315c is formed in a smooth curved surface, so that the bone debris cut into the first surface 313 can be easily discharged through the 2-3rd surface 315c.

In addition, as shown in FIG. 3B, the first side 313 and the second side of the first tapping part 310 are made so that the distal part 140 formed at one end of the main body 100 can more effectively expand or pierce the bone. It is possible to form a sharp end with the surface 315. Specifically, the first tapping portion 310 may be formed by removing the spiral portion 200 from the distal portion 140. Here, two adjacent first tapping portions 310 of the first tapping portions 310 formed at predetermined angles with respect to the central axis C of the main body 100 are connected to the first-first tapping portion 310a and the first tapping portion 310a. It can be defined as -2 tapping part 310b. At this time, the first surface 313 of the 1-1 tapping part 310a and the second surface 315 of the 1-2nd tapping part 310b meet at the end of the distal end 140, so that the second surface ( The end of the 315 (2-2 surface 315b) may extend obliquely with respect to the central axis C of the main body 100. That is, while the first surface 313 of the 1-1 tapping part 310a and the second surface 315 of the 1-2 tapping part 310b meet, a sharp part is formed at the end of the distal part 140. It is possible, and through this part, the bone can be effectively expanded or pierced. In addition, since the through hole 110 is formed along the central axis C of the main body 100, as a whole, the first surface 313 of the 1-1 tapping part 310a, the 1-2 tapping part 310b A sharper portion may be formed at the distal end of the distal end 140 by the second surface 315 of the and the through hole 110.

Meanwhile, as described above, the main body 100 may be divided into a first area A1 and a second area A2. In this case, the diameter of the main body 100 in the first area A1 is constant, and the diameter of the main body 100 in the second area A2 may increase toward the head 130. In this way, since the diameter of the main body 100 increases in the second region A2, the more the bone screw 1000 is inserted into the bone, the stronger the helical portion 200 in the second region A2 is coupled to the bone, It is possible to strengthen the bonding force between the bone screw 1000 and the bone. In order to effectively insert the second area A2 of which the diameter of the body 100 increases into the bone, the second area A2 may be provided with a second tapping part 320 capable of secondarily expanding the bone. . Here, the second tapping portion 320 is formed by removing the spiral portion 200 along the length direction of the main body 100 from a predetermined point in the second area A2, and at a predetermined interval from the head 130 at a predetermined point. It can be formed up to a spaced apart point. The reason that it is formed only up to a point spaced apart from the head 130 by a predetermined interval is that a fixing plate 400 is provided that is fixed to the fracture site from the head 130 to a predetermined interval. Meanwhile, the second tapping portions 320 may be formed at predetermined angles based on the central axis C of the main body 100. For example, three second tapping portions 320 may be formed every 120 degrees based on the central axis C of the main body 100 (see FIGS. 1 to 2 ). However, three second tapping portions 320 are not necessarily formed, and the number of second tapping portions 320 may be changed as necessary, such as two to five.

Specifically, looking at the second tapping part 320, as shown in FIG. 4, the second tapping part 320 has a third surface 323 and a third surface 323 formed perpendicular to the outer circumferential surface of the main body 100. ) May include a fourth surface 325 formed perpendicular to. Here, since the third surface 323 is formed perpendicular to the outer circumferential surface (that is, in a direction away from the central axis C of the main body 100), substantially the third surface 323 is the rotational direction of the main body 100 Is perpendicular to Accordingly, when the body 100 is rotated to couple the bone screw 1000 to the bone, the third surface 323 may serve to sharpen the bone. In addition, bone debris cut into the third surface 323 may be discharged through the fourth surface 325 formed perpendicular to the third surface 323. More specifically, the fourth surface 325 may include a 4-1 surface 325a, a 4-2 surface 325b, and a 4-3 surface 325c. Here, the 4-1 surface 325a extends to form a predetermined angle with the central axis C of the main body 100. For example, the 4-1th surface 325a may extend away from the central axis C of the main body 100 toward the head 130 of the main body 100. In this case, the predetermined angle of the 4-1th surface 325a may have a value between 0 degrees and 20 degrees. In addition, the 4-2 surface 325b is the central axis (C) of the main body 100 from one end (the end toward the end 140) of the 4-1 surface 325a on the one end direction side of the main body 100 It can be inclined in a direction away from the. Further, the 4-3 surface 325c may be inclined in a direction away from the central axis C of the main body 100 from the other end of the 4-1 surface 325a (the end toward the head 130). At this time, the 4-2 surface 325b and the 4-3 surface 325c are formed in a smooth curved surface, and the bone debris cut with the third surface 323 is the 4-2 surface 325b and the 4-th surface It may be discharged in the order of the first side (325a), and the 4-3 side (325c).

5 to 6 are perspective views of a bone screw according to a second embodiment of the present invention, and FIGS. 7 to 8 are side views of a bone screw according to a second embodiment of the present invention.

5 to 8, the bone screw 2000 according to the second embodiment of the present invention includes a body 100, a spiral portion 200, and a tapping portion 300, the first A portion similar to the bone screw 1000 according to the embodiment exists, and a different portion (such as the shape of the spiral portion 200) exists. Therefore, in the bone screw 2000 according to the second embodiment of the present invention, portions overlapping with the bone screw 1000 according to the first embodiment are omitted, and different portions will be described as the center.

The main body 100 of the bone screw 2000 according to the present embodiment may have a variable diameter in a certain area, and a threaded part may not be formed in a certain area. Specifically, as shown in FIG. 7, from one end (end 140) of the main body 100 to a first predetermined point of the main body 100 is defined as a first area A1, and the main body 100 The second area A2 is defined as the second area A2 from the first predetermined point of the main body 100 to the second predetermined point of the main body 100, and the distance from the second predetermined point of the main body 100 to the head 130 of the main body 100 is delimited. It can be defined as three areas (A3). At this time, the diameter of the main body 100 in the first area A1 and the second area A2 is constant, and the diameter of the main body 100 in the third area A3 may increase toward the head 130. have. In this way, when the diameter of the main body 100 increases toward the head 130 in the third area A3, the bonding force between the bone screw 2000 and the bone can be strengthened, which will be described later. . Also, the spiral portion 200 may be formed in the first area A1 and the third area A3 except for the second area A2. That is, the spiral portion 200 is not formed in the second region A2, but may be formed only in the first region A1 and the third region A3. In this case, the pitch P1 of the spiral portion 200 formed in the first area A1 may be larger than the pitch P2 of the spiral portion 200 formed in the third area A3. As described above, if the pitch P1 of the spiral portion 200 in the first area A1 is larger than the pitch P2 of the spiral portion 200 in the third area A3, the fracture site can be pressed. have. Specifically, as shown in FIG. 9, when the bone is fractured and separated into a first portion F1 and a second portion F2, the spiral portion in the first region A1 in the first portion F1 When 200 is inserted and the helical part 200 in the third area A3 is inserted in the second part F2, when the bone screw 2000 is rotated, as shown in FIG. 10, The first portion F1 may be pressed in the direction of the second portion F2 by the spiral portion 200 in the first region A1 having a relatively large pitch P1. Therefore, the bone screw 2000 according to the present embodiment has a large therapeutic effect when the bone is fractured and separated into two parts.

Meanwhile, as shown in FIG. 7, the tapping part 300 may include a first tapping part 310 and a third tapping part 330. At this time, the first tapping portion 310 is substantially the same as the bone screw 1000 according to the first embodiment of the present invention. That is, the first tapping portion 310 is formed to a predetermined length from one end (the end portion 140) of the main body 100, and serves to substantially expand or pierce a bone.

Meanwhile, as described above, the main body 100 may be divided into a first area A1, a second area A2, and a third area A3. In this case, the diameter of the main body 100 in the first area A1 and the second area A2 is constant, and the diameter of the main body 100 in the third area A3 may increase toward the head 130. have. In this way, since the diameter of the main body 100 increases in the third area A3, the more the bone screw 2000 is inserted into the bone, the stronger the screw portion in the third area A3 is coupled to the bone, and thus the bone screw 2000 ) And the bond between the bones can be strengthened. In order to effectively insert the third area A3 with an increasing diameter of the body 100 into the bone, the third area A3 may be provided with a third tapping part 330 capable of secondarily expanding the bone. . Here, the third tapping portion 330 is formed by removing the spiral portion 200 along the length direction of the main body 100 from a second predetermined point in the third area A3, and the head 130 at the second predetermined point. ) Can be formed to a point separated by a certain interval. The reason that it is formed only up to a point spaced apart from the head 130 by a predetermined interval is that a fixing plate 400 is provided that is fixed to the fracture site from the head 130 to a predetermined interval. Meanwhile, the third tapping portion 330 may be formed at a predetermined angle with respect to the central axis C of the main body 100. For example, three third tapping portions 330 may be formed every 120 degrees based on the central axis C of the main body 100 (see FIGS. 5 to 6 ). However, three third tapping portions 330 are not necessarily formed, and the number of third tapping portions 330 may be changed as necessary, such as two to five.

Specifically, looking at the third tapping part 330, as shown in FIG. 8, the third tapping part 330 has a fifth surface 333 and a fifth surface 333 formed perpendicular to the outer circumferential surface of the main body 100. ) May include a sixth surface 335 formed perpendicular to. Here, since the fifth surface 333 is formed perpendicular to the outer circumferential surface (that is, in a direction away from the central axis C of the main body 100), substantially the fifth surface 333 is the rotational direction of the main body 100 Is perpendicular to Accordingly, when the body 100 is rotated to couple the bone screw 2000 to the bone, the fifth surface 333 may serve to sharpen the bone. In addition, bone debris cut into the fifth surface 333 may be discharged through the sixth surface 335 formed perpendicular to the fifth surface 333. More specifically, the sixth surface 335 may include a 6-1 surface 335a, a 6-2 surface 335b, and a 6-3 surface 335c. Here, the 6-1th surface 335a extends to form a predetermined angle with the central axis C of the main body 100. For example, the 6-1th surface 335a may extend away from the central axis C of the main body 100 toward the head 130 of the main body 100. In this case, the predetermined angle of the 6-1th surface 335a may have a value between 0 degrees and 20 degrees. In addition, the 6-2th surface 335b is the central axis (C) of the main body 100 from one end (the end toward the end 140) of the 6-1 surface 335a toward the one end direction of the main body 100 It can be inclined in a direction away from the. Further, the 6-3th surface 335c may be inclined in a direction away from the central axis C of the main body 100 from the other end of the 6-1th surface 335a (the end toward the head 130). At this time, the 6-2 surface 335b and the 6-3 surface 335c are formed in a smooth curved surface, and the bone debris cut with the fifth surface 333 is the 6-2th surface 335b and the 6th surface. It may be discharged in the order of the first side (335a), and the 6-3th side (335c).

11 to 17 are perspective views showing a process of using a bone screw according to the present invention.

First, as shown in FIG. 11, the fixing plate 400 and the guide 500 are disposed on the fracture site. At this time, the fixing plate 400 and the guide 500 are formed with fastening holes 600 into which the bone screws 1000 and 2000 are to be inserted.

Next, as shown in FIG. 12, after disposing the sleeve 700 having a through hole formed in the fastening hole 600 of the fixing plate 400 and the guide 500, as shown in FIG. 13, the sleeve 700 Insert a wire (800, metal steel wire) into the through hole of ). Thereafter, a wire 800 is used to penetrate the bone. In addition, it is possible to check the length of the appropriate bone screws 1000 and 2000 to be inserted through the length of the inserted wire 800.

Next, as shown in FIGS. 14 to 15, the bone screws 1000 and 2000 are rotated while the wire 800 is inserted into the through hole 110 of the bone screws 1000 and 2000 to be coupled to the bone. . At this time, the bone screws 1000 and 2000 are guided by the wire 800 and may be inserted while expanding the bone. In addition, since the head portions of the bone screws 1000 and 2000 are caught by the fixing plate 400, the fixing plate 400 can be fixed to the fracture site. Thereafter, as shown in FIG. 16, the wire 800 may be removed.

Next, as shown in FIG. 17, the guide 500 is finally removed, and only the fixed plate 400 can be fixed to the fracture site.

The above-described process was described based on the wrist fracture site. However, the bone screws 1000 and 2000 according to the present invention are not limited to the use of the wrist fracture site, and the bone screws 1000 and 2000 according to the present invention may be used for all fracture sites known in the art. Of course. In addition, although the guide 500 and the wire 800 were used in the above-described process, this is exemplary and the scope of the present invention is not limited thereto.

Although the present invention has been described in detail through specific examples, this is for describing the present invention in detail, and the present invention is not limited thereto, and within the technical idea of the present invention, by those of ordinary skill in the art. It is clear that modifications or improvements are possible.

All simple modifications to changes of the present invention belong to the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

1000, 2000: bone screw 100: main body
110: through hole 120: fastening hole
130: head 140: distal portion
200: spiral portion 300: tapping portion
310: first tapping portion 310a: 1-1th tapping portion
310b: 1-2 tapping portion 313: first surface
315: page 2 315a: page 2-1
315b: page 2-2 315c: page 2-3
320: second tapping portion 323: third surface
325: page 4 325a: page 4-1
325b: pp. 4-2 325c: pp. 4-3
330: third tapping portion 333: fifth surface
335: page 6 335a: page 6-1
335b: page 6-2 335c: page 6-3
400: fixed plate 500: guide
600: fastening hole 700: sleeve
800: wire P, P1, P2: pitch
A1: first area A2: second area
A3: third area C: central axis

Claims (23)

A body formed in a cylindrical shape, inserted into the bone from one end and provided with a head at the other end;
A spiral portion extending in a spiral shape along the outer circumferential surface of the main body and protruding; And
A tapping portion formed by removing the spiral portion along the longitudinal direction of the main body;
Including,
The tapping part,
A first tapping portion formed by removing the spiral portion from one end of the main body along the longitudinal direction of the main body;
Including,
The first tapping portion includes a first surface formed perpendicular to the outer circumferential surface of the main body and a second surface formed perpendicular to the first surface,
The second side,
A second surface extending to form a first angle with the central axis of the main body;
A second 2-extending in a direction closer to the central axis of the main body from one end of the 2-1 surface toward one end direction of the main body and inclined at a second angle greater than the first angle with the central axis of the main body 2 sides; And
A third surface inclined in a direction away from the central axis of the main body from the other end of the second surface;
Including,
The first angle is between 0 degrees and 10 degrees, the second angle is between 30 and 60 degrees,
When defining as a first area from one end of the main body to a predetermined point of the main body, and from a predetermined point of the main body to before the head of the main body as a second area,
The diameter of the body is constant in the first region, and the diameter of the body in the second region increases toward the head,
The tapping part,
A second tapping portion formed by removing a helical portion along a longitudinal direction of the main body in the second region;
Including,
The second tapping portion includes a third surface formed perpendicular to the outer circumferential surface of the main body and a fourth surface formed perpendicular to the third surface,
The fourth side,
A 4-1 surface extending to form a predetermined angle with the central axis of the main body;
A 4-2 surface inclined in a direction away from the central axis of the body from one end of the 4-1 surface toward one end direction of the body; And
A 4-3 surface inclined in a direction away from the central axis of the main body from the other end of the 4-1 surface;
Including,
Bone screw for fixing the fixing plate to the fracture site by engaging the head with the fixing plate.
delete delete The method according to claim 1,
The first tapping part is a bone screw formed at a predetermined angle with respect to the central axis of the main body.
The method according to claim 1,
The first tapping part is a bone screw formed to a predetermined length from one end of the main body.
delete The method according to claim 1,
An end portion is formed at one end of the main body, and the spiral portion is removed at the end portion to form the first tapping portion,
When defining two adjacent first tapping portions among the first tapping portions formed at predetermined angles with respect to the central axis of the main body as a 1-1 tapping portion and a 1-2 tapping portion,
The end of the second surface of the 1-2nd tapping part is with respect to the central axis of the main body so that the first surface of the 1-1 tapping part and the second surface of the 1-2 tapping part meet at the end of the distal end. Bone screws extending obliquely.
delete delete delete The method according to claim 1,
The second tapping part is a bone screw formed at a predetermined angle with respect to the central axis of the main body.
The method according to claim 1,
The second tapping portion is formed to a point spaced apart from the head at the predetermined point in the second area.
delete The method according to claim 1,
The spiral portion is a bone screw having a constant pitch.
A body formed in a cylindrical shape, inserted into the bone from one end and provided with a head at the other end;
A spiral portion extending in a spiral shape along the outer circumferential surface of the main body and protruding; And
A tapping portion formed by removing the spiral portion along the longitudinal direction of the main body;
Including,
The tapping part,
A first tapping portion formed by removing the spiral portion from one end of the main body along the longitudinal direction of the main body;
Including,
The first tapping portion includes a first surface formed perpendicular to the outer circumferential surface of the main body and a second surface formed perpendicular to the first surface,
The second side,
A second surface extending to form a first angle with the central axis of the main body;
A second 2-extending in a direction closer to the central axis of the main body from one end of the 2-1 surface toward one end direction of the main body and inclined at a second angle greater than the first angle with the central axis of the main body 2 sides; And
A third surface inclined in a direction away from the central axis of the main body from the other end of the second surface;
Including,
The first angle is between 0 degrees and 10 degrees, the second angle is between 30 and 60 degrees,
A first area is defined from one end of the main body to a first predetermined point of the main body, and a second predetermined point of the main body is defined as a second area, and the first predetermined point of the main body is defined as a second area. 2 When defining as a third area from a predetermined point to before the head of the main body,
The diameter of the body is constant in the first region and the second region, and the diameter of the body in the third region increases toward the head,
The spiral portion is formed in the first region and the third region excluding the second region,
The tapping part,
A third tapping portion formed by removing a helical portion along a longitudinal direction of the main body in the third area;
Including,
The third tapping portion includes a fifth surface formed perpendicular to the outer circumferential surface of the main body and a sixth surface formed perpendicular to the fifth surface,
The sixth side,
A 6-1 surface extending to form a predetermined angle with the central axis of the main body;
A 6-2th surface inclined in a direction away from the central axis of the main body from one end of the 6-1th surface toward one end of the main body; And
A 6-3 surface inclined in a direction away from the central axis of the main body from the other end of the 6-1 surface;
Including,
Bone screw for fixing the fixing plate to the fracture site by engaging the head with the fixing plate.
delete delete The method of claim 15,
The third tapping part is a bone screw formed at a predetermined angle with respect to the central axis of the main body.
The method of claim 15,
The third tapping part is formed from the second predetermined point of the third area to a point spaced apart from the head by a predetermined distance.
delete The method of claim 15,
The pitch of the spiral portion formed in the first area is larger than the pitch of the spiral portion formed in the third area.
The method according to claim 1 or 15,
A bone screw having a through hole penetrating through the body in a longitudinal direction.
The method of claim 22,
A bone screw into which a wire is inserted into the through hole.

Images