KR101563738B1 - Bone plate and bone plate system using the same - Google Patents

Bone plate and bone plate system using the same Download PDF

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Publication number
KR101563738B1
KR101563738B1 KR1020130112554A KR20130112554A KR101563738B1 KR 101563738 B1 KR101563738 B1 KR 101563738B1 KR 1020130112554 A KR1020130112554 A KR 1020130112554A KR 20130112554 A KR20130112554 A KR 20130112554A KR 101563738 B1 KR101563738 B1 KR 101563738B1
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KR
South Korea
Prior art keywords
screw
female screw
locking
present
female
Prior art date
Application number
KR1020130112554A
Other languages
Korean (ko)
Other versions
KR20150033058A (en
Inventor
김찬봉
서장현
배현국
Original Assignee
주식회사 제일메디칼코퍼레이션
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 주식회사 제일메디칼코퍼레이션 filed Critical 주식회사 제일메디칼코퍼레이션
Priority to KR1020130112554A priority Critical patent/KR101563738B1/en
Priority to PCT/KR2014/008764 priority patent/WO2015041486A1/en
Publication of KR20150033058A publication Critical patent/KR20150033058A/en
Application granted granted Critical
Publication of KR101563738B1 publication Critical patent/KR101563738B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread

Abstract

The present invention discloses a present plate capable of selectively using different types of locking screws and a present plate system using the same. The present plate system of the present invention comprises the present plate, a first locking screw and a second locking screw. The plate has at least one locking hole formed to penetrate the upper surface, the lower surface facing the bone, the upper surface and the lower surface, and having a first female screw and a second female screw at each of the upper and lower portions, Is formed larger than the inner diameter of the second female screw. The first locking screw has a first male screw fastened to the first female screw and a second male screw fastened to the bone through the second female screw. The second locking screw has a third male screw fastened to the second female screw and a fourth male screw passed through the second female screw to be fastened to the bone. According to the present invention, since different locking screws can be easily and selectively combined with one locking hole, the surgeon can efficiently perform fracture treatment.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plate-

More particularly, the present invention relates to a present plate capable of selectively using different types of locking screws and a plate system using the same.

This plate system pushes bone fragments that are fractured for fracture treatment and pulls the bone fragments closely to promote treatment. This plate system includes a main plate and a bone screw. The plate may include a hole in which an internal thread is formed and a hole in which a female thread is not formed. This screw has a locking screw with an external thread on the head and a non-locking screw with no screw on the head. The locking and non-locking screws all have shafts on which male threads are formed to be able to engage the bones.

The locking screw can fix the angle at which the male screw formed on the head is engaged with the female screw of the plate to connect the shaft of the screw to the bone. The central axis of the locking screw is coupled to be coaxial with the central axis of the female screw. Also, it is possible to prevent the screw connected to the bone from being loosened or loosened by the dynamic load acting on the bone fragments and the plate after the surgery. The male thread of the non-locking screw can be joined to the bone at various angles. However, the non-locking screw is not fixed to the plate because the male thread is not formed on the head.

Such a plate and a plate system are manufactured in various forms and structures suitable for the treatment of fractures and can be easily found in many patent documents such as US 6,669,701 and PCT International Application WO 2009/023666 have. The patented door hurdle discloses a main plate having a locking hole in which a female thread is formed, and a locking screw which is fastened to a female screw.

However, since the conventional plate system as described above is constructed so that only one type of locking screw can be fastened to the female screw of the present plate, a surgeon can use a different type of locking screw depending on the condition of the fragments, There is no problem. There is therefore a need for a plate system in which the surgeon can conveniently select and operate the type of screw according to the purpose of the treatment.

SUMMARY OF THE INVENTION The present invention is intended to solve various problems of the conventional plate system as described above. It is an object of the present invention to provide a new main plate and a main plate system using the same, which can selectively use different types of locking screws in a single locking hole as needed.

According to an aspect of the present invention, there is provided a plate. The present plate according to the present invention is provided with an upper surface, a lower surface facing the bone, at least one locking hole formed to pass through the upper surface and the lower surface, and having a first internal thread and a second internal thread formed at the upper and lower portions, The inner diameter of the first female screw is larger than the inner diameter of the second female screw so that different types of locking screws can be selectively coupled to the first female screw and the second female screw, respectively.

According to another aspect of the present invention, there is provided a plate system including: an upper surface, a lower surface facing the bone, at least one locking hole formed to penetrate the upper surface and the lower surface, And the inner diameter of the first female screw is larger than the inner diameter of the second female screw; A first locking screw having a first male screw fastened to the first female screw and a second male screw fastened to the bone through the second female screw; And a second locking screw having a third male screw fastened to the second female screw and a fourth male screw fastened to the bone through the second female screw.

According to the present plate and the present plate system using the same according to the present invention, different types of locking screws can be easily and selectively coupled to one locking hole, so that a surgeon can efficiently perform fracture treatment.

1 is a perspective view showing a configuration of a present plate system according to the present invention.
2 is a plan view showing a configuration of the present plate system according to the present invention.
3 is a cross-sectional view showing a configuration of the present plate system according to the present invention.
4 is a cross-sectional view showing the plate in the present plate system according to the present invention.
Fig. 5 is a schematic view showing the process of machining the locking hole shown in Fig. 4;
6 is a front view showing the configuration of the first and second locking screws in the present plate system according to the present invention.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

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

Referring first to FIG. 1, a present plate system 10 according to the present invention includes a present plate 20. In order to maintain a stable function in vivo for the treatment of fracture, the plate 20 is excellent in mechanical properties, and has a material having biocompatibility and biofundability, for example, titanium (Titanium) But is not limited thereto.

The plate 20 has a top surface 22, a bottom surface 24 disposed toward the bone 2, and a plurality of locking holes 30. The locking holes 30 have first and second holes 32 and 34 formed to penetrate the upper surface 22 and the lower surface 24 along a center axis line C 1 , And the first and second female screws 40 and 42 formed in the two holes 32 and 34, respectively. The first hole 32 and the second hole 34 are aligned with the center axis C. The inside diameter of the first female thread (40) (Minor diameter: d 1) the goal diameter (Major diameter: d 2) each of which is configured larger than the inside diameter (d 3) the goal diameter (d 4) of the second female thread (42) have. Each of the first and second female screws 40 and 42 of the present embodiment is formed of a double thread, but may be a one-threaded screw.

Although the present plate 20 is shown in FIG. 1 as being formed in a straight line shape, this is an illustrative example. The plate 20 can be manufactured in various shapes and structures to be suitable for the treatment of fracture. In addition, the bottom plate 24 can be concavely banded with respect to the longitudinal axis so that the plate 20 can be more closely adhered to the bone 2. The edge of the plate 20 is formed in a curved shape whose thickness gradually decreases to reduce the foreign body feeling of the surgical site and prevent secondary damage such as inflammation after the procedure.

The hole and the female thread in the locking hole will be described in more detail with reference to Fig. As shown in Fig. 5 (a), the first hole 32 is formed in the upper portion of the main plate 20 so as to penetrate the upper surface 22 thereof. The diameter d 5 of the first hole 32 is equal to the inner diameter d 1 of the first female screw 40. A first taper hole (36) is formed in the upper portion of the first hole (32). The second hole (34) penetrates the lower surface (24) to communicate with the first hole (32). The first hole 32 and the second hole 34 are connected by a second taper hole 38. The diameter d 6 of the second hole 34 is equal to the inner diameter d 3 of the second female screw 42. Each of the first and second taper holes 36 and 38 is formed by countersinking.

As shown in Fig. 5 (b), the first female screw 40 is formed on the inner peripheral surface of the first hole 32. As shown in Fig. 5 (c), the second female screw 42 is formed on the inner peripheral surface of the second hole 34. As shown in Fig. In some embodiments, the pitches of the first and second female threads 40, 42 may be the same or different.

Referring to FIGS. 1 and 2, the present plate system 10 according to the present invention includes a first locking screw 50 coupled to a first female thread 40 of the present plate 20. The first locking screw 50 has a head 52 and a shaft 54 extending axially from the head 52. The first locking screw 50 may be made of titanium similarly to the present plate 20.

A tool for engaging the first locking screw 50 in the bone 2 or fastening the first locking screw 50 to the first female screw 40 is provided on the upper surface 56 of the head 52, (Recess) 58 are formed. The upper surface 56 of the head 52 may be a round head formed of a round. A first male screw (60) is formed on the head (52) for fastening with the first female screw (40). The first male screw 60 up to the outer diameter of: the (Maximum major diameter D 1), i.e., the head 52 diameter, the first female screw 40, bone diameter (d 2) smaller, the second female thread 42 of the Is larger than the bone diameter (d 4 ). In this embodiment, the first male screw 60 is formed as a double-row screw for fastening with the first female screw 40. [ And is formed along the outer circumferential surface of the shaft 54 so that the second male screw 62 can engage with the bone 2. The maximum outer diameter D 2 of the second male screw 62 is smaller than the inner diameter d 3 of the second female screw 42. A flute 64 is formed at the distal end of the shaft 54 so that self-tapping or self-drilling is possible.

The present plate system 10 according to the present invention includes a second locking screw 70 that is coupled to a second female thread 42 of the present plate 20. The second locking screw 70 has a recess 78 formed in the top surface 76 of the head 72 and the shaft 74 as well as the first locking screw 50. A third male screw 80 is formed on the head 72 for fastening with the second female screw 42. The maximum outer diameter D 3 of the third male screw 80, that is, the diameter of the head 72 is smaller than the bore diameter d 3 of the second female screw 42 and the diameter of the second female screw 42 4 ). In this embodiment, the third male screw 80 is formed of a double-row screw for fastening with the second female screw 42. [ And is formed along the outer circumferential surface of the shaft 72 so that the second male screw 80 can engage with the bone 2. The maximum outer diameter D 4 of the fourth male screw 82 is smaller than the inner diameter d 3 of the second female screw 42. A flute 222 is formed at the distal end of the shaft 704 to enable self-tapping or self-drilling.

In the present plate system 10 according to the present invention having such a structure, the surgeon may place the first locking screw 50 or the second locking screw 50 in the locking hole 30 of the present plate 20, 2 locking screw 70 can be selectively engaged. For example, when a bone piece is required to have a large or large bonding force, the surgeon can fasten the first male screw 60 of the first locking screw 50 to the first female screw 40 of the present plate 20. At this time, the second male screw 62 passes through the first and second female screws 40 and 42 and is fastened to the bone 2. When the coupling of the first locking screw 50 is completed, the head 52 is immersed in the first taper hole 36.

On the other hand, when a small or small binding force is required, the surgeon can fasten the third male screw 80 of the first locking screw 50 to the second female screw 42 of the present plate 20. At this time, the third male screw 80 is not fastened to the first female screw 40 and passes through the first female screw 40 and is fastened to the second female screw 42. The fourth male screw 82 passes through the first and second female threads 40 and 42 and is fastened to the bone 2. When the engagement of the second locking screw 70 is completed, the head 72 is immersed in the second taper hole 38.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. For example, the present invention may be configured such that one of three locking screws having different diameters is formed with three or more female screws having different diameters in one locking hole, so that one of the three locking screws can be selectively locked into one locking hole. Therefore, the scope of the present invention should not be construed as being limited to the embodiments but should be interpreted by the claims.

10: This plate system 20: This plate
30: locking hole 32: first hole
34: second hole 36: first taper hole
38: second taper hole 40: first female thread
42: second female screw 50: first locking screw
60: first male screw 62: second male screw
70: second locking screw 80: third male screw
82: Fourth male thread

Claims (5)

And at least one locking hole formed to penetrate the upper surface and the lower surface and having a first female screw and a second female screw formed on the upper and lower sides, respectively, and the first female screw and the second female screw, Wherein an inner diameter of the first female screw is larger than an inner diameter of the second female screw so that different types of locking screws can be selectively coupled to each of the second female screws. The method according to claim 1,
And a second taper hole is formed between the first female screw and the second female screw to connect the first female screw and the second female screw to each other. This plate is made. And at least one locking hole formed to penetrate the upper surface and the lower surface and having a first female screw and a second female screw formed on the upper and lower sides, respectively, and the inner diameter of the first female screw A main plate having an inner diameter larger than an inner diameter of the second female screw;
A first locking screw having a first male screw fastened to the first female screw and a second male screw fastened to the bone through the second female screw;
And a second locking screw having a third male screw fastened to the second female screw and a fourth male screw fastened to the bone through the second female screw. The method of claim 3,
Wherein a maximum outer diameter of the first male screw is larger than an inner diameter of the second female screw and a maximum outer diameter of the third male screw is smaller than an inner diameter of the first female screw and a maximum outer diameter of each of the second male screw and the fourth male screw And the diameter is smaller than the inner diameter of the second female screw. The method according to claim 3 or 4,
And a second taper hole is formed between the first female screw and the second female screw to connect the first female screw and the second female screw to each other. The present plate system.
KR1020130112554A 2013-09-23 2013-09-23 Bone plate and bone plate system using the same KR101563738B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020130112554A KR101563738B1 (en) 2013-09-23 2013-09-23 Bone plate and bone plate system using the same
PCT/KR2014/008764 WO2015041486A1 (en) 2013-09-23 2014-09-22 Bone plate and bone plate system using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130112554A KR101563738B1 (en) 2013-09-23 2013-09-23 Bone plate and bone plate system using the same

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KR20150033058A KR20150033058A (en) 2015-04-01
KR101563738B1 true KR101563738B1 (en) 2015-10-27

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WO (1) WO2015041486A1 (en)

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KR20230168713A (en) 2022-06-08 2023-12-15 주식회사 도이프 Bone fixation system with integral screw

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007151674A (en) 2005-12-01 2007-06-21 Hidetoshi Onoe Bone plate

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Publication number Priority date Publication date Assignee Title
US7951179B2 (en) * 2005-10-25 2011-05-31 Anthem Orthopaedics Llc Bone attachment screw
KR101006345B1 (en) * 2008-12-29 2011-01-10 주식회사 제일메디칼코퍼레이션 Bone Plate and bone fixation assembly kit including the same
KR101026197B1 (en) * 2009-03-12 2011-03-31 주식회사 솔고 바이오메디칼 Apparatus for bone fixation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007151674A (en) 2005-12-01 2007-06-21 Hidetoshi Onoe Bone plate

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KR20150033058A (en) 2015-04-01
WO2015041486A1 (en) 2015-03-26

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