KR200467239Y1 - Bone distractor - Google Patents

Bone distractor Download PDF

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Publication number
KR200467239Y1
KR200467239Y1 KR2020120000130U KR20120000130U KR200467239Y1 KR 200467239 Y1 KR200467239 Y1 KR 200467239Y1 KR 2020120000130 U KR2020120000130 U KR 2020120000130U KR 20120000130 U KR20120000130 U KR 20120000130U KR 200467239 Y1 KR200467239 Y1 KR 200467239Y1
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KR
South Korea
Prior art keywords
bone
coupled
skin
lead screw
universal joint
Prior art date
Application number
KR2020120000130U
Other languages
Korean (ko)
Inventor
이병주
Original Assignee
주식회사 제일메디칼코퍼레이션
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Priority to KR2020120000130U priority Critical patent/KR200467239Y1/en
Priority to PCT/KR2013/000056 priority patent/WO2013103261A1/en
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Publication of KR200467239Y1 publication Critical patent/KR200467239Y1/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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/66—Alignment, compression or distraction mechanisms
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6433—Devices extending alongside the bones to be positioned specially adapted for use on body parts other than limbs, e.g. trunk or head
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6441—Bilateral fixators, i.e. with both ends of pins or wires clamped
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
    • A61B17/6475—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod the connecting rod being threaded
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/66—Alignment, compression or distraction mechanisms
    • A61B17/663—Alignment, compression or distraction mechanisms for jaw bones, e.g. subcutaneous distractors with external access
    • 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
    • A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
    • 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
    • A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
    • A61B17/8019—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones where the means are a separate tool rather than being part of the plate

Abstract

The present invention discloses a bone kidney for adjusting the relative position and rotation angle of the two bone fragments during the operation of bone renal surgery. The present invention provides a first bone plate coupled to the bone fragments, a second bone plate disposed away from the first bone plate, coupled to the bone fragments, a nut to which the first bone plate is coupled, and the nut by spiral motion The lead screw is fastened so as to be movable, the universal joint is connected to the tip of the lead screw, and the rod is connected to the universal joint so that the operator can rotate. The end cap is attached to the rear end of the lead screw. The second bone plate is coupled to the end cap. An inclined surface is formed on the outer surface of the end cap adjacent to the skin to prevent contact with the skin. According to the present invention, it is possible to accurately and easily adjust the relative position and rotation angle of the two bone fragments by the joint motion of the universal joint during the operation of bone renal surgery. In addition, since the inclined surface of the end cap placed on the skin is prevented from contacting the skin, and the pressure on the skin is minimized to prevent the occurrence of necrosis and inflammation, it is possible to improve the accuracy and efficiency of osteotomy.

Figure R2020120000130

Description

BONE DISTRACTOR

The present invention relates to a bone kidney, and more particularly to a bone kidney for adjusting the relative position and rotation angle of the two bone pieces during the operation of bone renal surgery.

 Osteopathy is a surgical method that increases the length of bone through the gradual extension of the healing callus at the end of the fracture. It forms the tissues of the skin, muscles, ligaments, cartilage, blood vessels, and nerves by gradual traction. . Osteogenesis is more advantageous than postoperative osteotomy because of its progressive therapeutic effect and accurate prediction after surgery. It is advantageous for prevention of stability and regression after surgery because it is stretched with soft tissue. Recently, bone renal surgery has been actively adopted for the correction of facial bone deformities.

Mechanisms, which are used for bone reconstruction, span the fracture site to gradually adjust the distance and angle of rotation of one bone fragment (Bone fragment or Bone segment) on both sides of the fracture. And a pin or bone screw fixed to the bone fragments through the skin.

Korean Patent Laid-Open Publication No. 10-2007-0046121 discloses an osteotomy device including a first bone plate, a second bone plate, and a connection mechanism operatively connecting the first and second bone plates. The second bone plate can be moved relative to the first bone plate by the rotation of the activation screw. A first housing member is associated with the first rib plate and a second housing member accommodating the operating screw. The first housing member and the second housing member are rotatably coupled.

U.S. Patent No. 7,771,434 Bone distractor apparatus includes a distal bone plate and a proximal bone plate fixed to two bone fragments by a plurality of bone screws. The distal and proximal bone plates are connected by a housing.

However, the bone kidney of the prior art as described above has a problem in that the rear wall or distal end of the housing to be inserted into the skin presses the skin and causes necrosis or inflammation as it comes into contact with the skin.

The present invention is to solve the various problems of the prior art as described above. An object of the present invention is to provide a new structure of the bone structure that can be adjusted accurately and easily the relative position and rotation angle of the two bone pieces during the operation of bone renal surgery.

Another object of the present invention is to provide a bone stretch that can prevent the distal end placed in the skin from contacting the skin.

Another object of the present invention is to provide a bone kidney that can minimize the pressure on the skin to prevent the occurrence of necrosis and inflammation.

According to one aspect of the present invention, there is provided a bone kidney. Bone extension device according to the present invention, the first bone plate is coupled to the bone fragments; A second bone plate disposed away from the first bone plate and coupled to the bone piece; A nut to which the first goal plate is coupled; A lead screw fastened so that the nut can move by a spiral motion; A universal joint connected to the tip of the lead screw; A rod connected to the universal joint so that the operator can rotate the universal joint; It is coupled to the rear end of the lead screw, the second bone plate is coupled to the outer surface adjacent to the skin and includes an end cap formed with an inclined surface to prevent contact with the skin.

The bone stretcher according to the present invention can precisely and easily adjust the relative position and rotation angle of two bone fragments by joint motion of the universal joint during the operation of the bone renal surgery. In addition, since the inclined surface of the end cap placed on the skin is prevented from contacting the skin, and the pressure on the skin is minimized to prevent the occurrence of necrosis and inflammation, it is possible to improve the accuracy and efficiency of osteotomy.

1 is a perspective view showing an exemplary use state of the bone stretch machine according to the present invention.
Figure 2 is a plan view showing the configuration of the bone kidney according to the present invention.
Figure 3 is a front view showing the configuration of the bone kidney according to the present invention.
Figure 4 is a perspective view showing the separated structure of the lead screw, universal joint and the rod in the bone expander according to the present invention.
Figure 5 is a perspective view showing a separate configuration of the universal joint in the bone expander 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.

First, referring to FIGS. 1 to 3, the bone stretcher 10 according to the present invention includes a first goal plate 12 and a second goal plate 14 disposed away from the first goal plate 12. do. The first and second bone plates 12 and 14 are fixed to opposite bone pieces of the mandible or maxilla, for example, by fastening the plurality of bone screws 16. The first and second bone plates 12 and 14 are of a size and shape suitable for coupling to each of the bone pieces.

The bone stretcher 10 according to the present invention includes a nut 20 to which the first bone plate 12 is coupled. The female screw 22 is formed in the center of the nut 20. The first bone plate 12 may be fixed to one side of the outer surface of the nut 20 by spot welding. A lead screw 30 is fastened to the female screw 22. The nut 20 is moved along the lead screw 30 by a screw movement.

1 to 5, a universal joint 40 is coupled to the tip of the lead screw 30. The universal joint 40 includes first and second joint yokes 42 and 44 and a cross shaft 46 connected to the first and second joint yokes 42 and 44. have. The cross axis 46 is composed of a block 46a, a first pivot 46b, a second pivot 46c and a third pivot 46d. The block 46a of the cross shaft 46 is disposed between the first and second joint yokes 42 and 44. The first pivot 46b engages the first joint yoke 42 and the block 46a to allow rotation of the first joint yoke 42. The second and third pivots 46c and 46d engage the second joint yoke 42 and the block 46b to allow rotation of the second joint yoke 44. First and second bushes 48a and 48b are fitted to the outer surfaces of the first and second joint yokes 42 and 44, respectively.

The first joint yoke 42 of the universal joint 40 is coupled to the tip of the lead screw 30 passing through the female screw 22 of the nut 20 by a coupling (Coupling) 42a. The second joint yoke 44 of the universal joint 40 is coupled to the rear end of the rod 50 by the coupling 44a. At the tip of the rod 50, a hexagonal head 52 is formed which the operator can rotate with a tool, for example, a hexagon box spanner. The rear end of the extension rod 60 is further coupled to the tip of the rod 50. The rear end of the extension rod 60 is screwed to the hexagonal head 62 of the rod 50. A hexagonal head 62 is formed at the tip of the extension rod 60.

An end cap 70 is coupled to the rear end of the lead screw 30. An inclined surface 72 is formed on the outer surface of the end cap 70 adjacent to the skin when the bone kidney 10 is placed according to the present invention. The inclined surface 72 is formed to be inclined toward the end from the center of the outer surface of the end cap 70. The second bone plate 14 is coupled to the outer surface of the end cap 70 by spot welding. The inclined surface 72 is formed on the outer surface of the end cap 70 at a position opposite to the second bone plate 14.

Now, the operation on the bone kidney according to the present invention having such a configuration will be described.

2 and 3, the operator of the hexagonal head 52 of the rod 50 or the hexagon of the extension rod 60 while the first and second bone plates 12 and 14 are fixed to the bone fragments. When the head 62 is rotated by the hexagonal box spanner, the universal joint 40 and the lead screw 30 are rotated together with the rod 50. The universal joint 40 allows the deflection, eccentricity and flow of the lead screw 30 generated between the center axis of the lead screw 30 and the center axis of the rod 50 by joint motion.

Subsequently, when the lead screw 30 is rotated, the nut 20 is moved along the lead screw 30 by the spiral movement of the female screw 22 and the lead screw 30, and together with the nut 20, the first screw The goal plate 12 is moved. Thus, the relative position and rotation angle of the first and second goal plates 12 and 14 are adjusted.

On the other hand, after implantation of the bone stretcher 10 according to the present invention, by the inclined surface 72 of the end cap 70 is prevented from contact with the skin. In addition, since the inclined surface 72 of the end cap 70, that is, the distal end of the bone extension 10 is minimized to press the skin, necrosis and inflammation generated during compression of the skin by the distal end can be prevented. Therefore, by the bone extension device 10 according to the present invention can improve the accuracy and efficiency of bone surgery.

The embodiments described above are merely to describe the preferred embodiments of the present invention, the scope of the present invention is not limited to the described embodiments, within the scope of the claims of the present invention, various modifications by those skilled in the art Modifications, variations, or substitutions may be made, and such embodiments are to be understood as being within the scope of the present invention.

10: bone extension 12: first goal plate
14: second goal plate 20: nut
30: lead screw 40: universal joint
50: rod 60: extension rod
70: end cap 72: slope

Claims (2)

A first bone plate coupled to the bone piece;
A second bone plate disposed away from the first bone plate and coupled to the bone piece;
A nut to which the first goal plate is coupled;
A lead screw fastened to move the nut by a spiral motion;
A universal joint connected to the distal end of the lead screw;
A rod connected to the universal joint so that the operator can rotate the universal joint;
And an end cap coupled to the rear end of the lead screw and having the second bone plate coupled thereto and having an inclined surface formed on an outer surface adjacent to the skin to prevent contact with the skin. The method of claim 1,
The inclined surface is formed to be inclined toward the end from the center of the outer surface of the end cap, bone extension machine is further coupled to the rod having a hexagonal head.
KR2020120000130U 2012-01-05 2012-01-05 Bone distractor KR200467239Y1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR2020120000130U KR200467239Y1 (en) 2012-01-05 2012-01-05 Bone distractor
PCT/KR2013/000056 WO2013103261A1 (en) 2012-01-05 2013-01-04 Bone distractor

Applications Claiming Priority (1)

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KR2020120000130U KR200467239Y1 (en) 2012-01-05 2012-01-05 Bone distractor

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WO (1) WO2013103261A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101706599B1 (en) * 2015-12-17 2017-02-15 원광대학교산학협력단 Alveolar bone distraction apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107205757B (en) * 2014-11-05 2019-08-16 小托马斯·S·约翰斯顿 Departing actuator arm for traction device
CN104586481B (en) * 2015-01-30 2017-03-08 中国人民解放军第306医院 A kind of built-in arc-shaped distraction device
WO2017117263A1 (en) 2015-12-28 2017-07-06 Glenhurst Labs, Llc Surgical devices for small bone fracture surgery
TWI645832B (en) * 2017-09-18 2019-01-01 China Medical University Knee surgery stretcher

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020035368A1 (en) 1999-09-13 2002-03-21 Brian Schumacher Bone distractor with shaft extension
KR20070046121A (en) * 2004-07-19 2007-05-02 신세스 게엠바하 Bone distraction apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6908469B2 (en) * 2000-10-04 2005-06-21 Synthes (Usa) Compact maxillary distractor
KR100539393B1 (en) * 2003-05-07 2005-12-27 김용욱 Bone distractor
KR100545891B1 (en) * 2004-03-16 2006-01-24 황순정 Alveolar bone stretching device
US20060058798A1 (en) * 2004-08-24 2006-03-16 Roman Shawn D Bone distractor with ratchet mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020035368A1 (en) 1999-09-13 2002-03-21 Brian Schumacher Bone distractor with shaft extension
KR20070046121A (en) * 2004-07-19 2007-05-02 신세스 게엠바하 Bone distraction apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101706599B1 (en) * 2015-12-17 2017-02-15 원광대학교산학협력단 Alveolar bone distraction apparatus

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