KR20010082114A - Femorotibial Resector Linker For Knee Arthroplasty - Google Patents

Femorotibial Resector Linker For Knee Arthroplasty Download PDF

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KR20010082114A
KR20010082114A KR1020010006554A KR20010006554A KR20010082114A KR 20010082114 A KR20010082114 A KR 20010082114A KR 1020010006554 A KR1020010006554 A KR 1020010006554A KR 20010006554 A KR20010006554 A KR 20010006554A KR 20010082114 A KR20010082114 A KR 20010082114A
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femur
osteotomy
tibia
alignment
groove
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KR1020010006554A
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Korean (ko)
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KR100399489B1 (en
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서재곤
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서재곤
김종범
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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
    • A61B17/14—Surgical saws ; Accessories therefor
    • A61B17/15—Guides therefor
    • A61B17/154—Guides therefor for preparing bone for knee prosthesis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1675—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the knee
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1721—Guides or aligning means for drills, mills, pins or wires for applying pins along or parallel to the axis of the femoral neck
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
    • A61B17/1767—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee for the patella
    • 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
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • 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
    • A61B2017/681—Alignment, compression, or distraction mechanisms

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Transplantation (AREA)
  • Dentistry (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Neurology (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

PURPOSE: A device for connecting femur fracture implement with tibia fracture implement in artificial knee joint operation is provided to maintain a precise arrangement of femur and tibia in an artificial knee joint substitution operation by connecting a fracture implement of lower part of femur with a fracture implement of upper part of tibia. CONSTITUTION: A groove for fracturing a lower part of femur is connected with a groove for fracturing an upper part of tibia. The groove for fracturing the lower part of femur and the groove for fracturing the upper part of tibia are fixed in parallel with each other. A group of hole(3) is bored in constant interval from a latch(9). A pin is driven into the hole(3) to connect a fracture implement of lower part of femur with a fracture implement of upper part of tibia.

Description

인공슬관절 수술용 대퇴골 및 경골 절골기 연결장치 {Femorotibial Resector Linker For Knee Arthroplasty}Femorotibial Resector Linker For Knee Arthroplasty}

인체의 손상된 무릎 관절을 인공 관절로 치환하는 수술에서 정확한 절골은 좌우다리 길이의 균형을 유지하여야 하고 수술 후 부작용 발생을 억제하며 치환된 인공관절의 수명을 연장시키기 위해 체중이 전달되는 기계적 축에 일치되게 대퇴골과 경골이 정렬을 유지하면서도 정확한 절골이 중요하다. 본 발명은 상기한 절골이 가가능하도록 대퇴골 절골 절골기와 경골 절골기를 연계시켜 정열을 유지시키면서 소정의 절골을 정확히 시술할 수 있는 대퇴 경골 연계식 절골술을 위한 연결장치를 제공하기 위한 것이다.In surgery to replace damaged knee joints with artificial joints, the correct osteotomy should balance the length of the left and right legs, coincide with the mechanical axis through which the weight is transmitted to prevent side effects after surgery and to prolong the life of the substituted joints. Precise osteotomy is important while maintaining the alignment of the femur and tibia. The present invention is to provide a connection device for femoral tibial linked osteotomy that can precisely operate a predetermined osteotomy while maintaining the alignment by connecting the femur osteotomy and the tibial osteotomy so that the above-described osteotomy is possible.

본 발명은 인체의 손상된 슬관절을 수술적으로 절골한 다음 인공 관절로 교체하는데 사용되는 슬관절 절골용 수술 기구에 관한 것이다.The present invention relates to a surgical instrument for knee osteotomy used to surgically osteotomize a damaged knee joint of a human body and then replace it with an artificial joint.

종래의 인공슬관절 치환 수술은 슬관절의 관절면의 연골이 마모되거나 류마티즘과 같은 질병으로 인해 내반 또는 외반 변형된 다리를 도 1의 왼쪽 그림과 같이 체중이 전달되는 기계적 축과 일치되도록 절골 후 인공슬관절로 대치하는 것이다. 이때 이상적인 절골은 도 1의 오른쪽 그림과 같이 기계적 축과 정렬을 유지하면서 동시에 치환될 인공슬관절의 두께와 동일하게 직사각형 내의 빗금친 부분을 절골하여야 한다.Conventional knee replacement surgery is the artificial knee joint after osteotomy so that the cartilage of the articular surface of the knee joint is worn out or the leg or valgus deformed leg due to a disease such as rheumatism coincides with the mechanical axis where weight is transmitted as shown in the left figure of FIG. To replace. At this time, the ideal osteotomy should be ascending the hatched portion in the rectangle equal to the thickness of the artificial knee joint to be replaced while maintaining the alignment with the mechanical axis as shown in the right figure of FIG.

기존의 슬관절 수술 기구는 도 2의 왼쪽 그림과 같이 독립적으로 대퇴골에 정렬장치를(1) 이용하여 정렬을 맞춘 다음 수직의 핀 구멍(3)과 경사진 구멍(10)에핀(7)을 박아 대퇴골 절골기(2)를 고정시킨 다음, 홈(4)을 통하여 진동 톱으로 절골한다. 경골 절골은 도 3의 왼쪽 그림과 같은 대퇴골과 무관하게 독립적으로 경골용정렬장치(5)를 설치하여 정렬을 맞춘 다음 경골 절골기(6)의 수평 구멍(3)과 경사구멍(10)에 핀(7)로 고정하고, 홈(4)을 통하여 진동 톱으로 절골 한다.Conventional knee surgery instruments are independently aligned with the alignment device (1) in the femur as shown in the left figure of Figure 2 and then pins (7) in the vertical pin hole (3) and the inclined hole (10) femur The osteotomy 2 is fixed, and then the oscillator is oscillated through the groove 4. Tibial osteotomy is aligned independently by installing the tibial alignment device 5 independently of the femur as shown in the left figure of FIG. 3, and then pins in the horizontal hole 3 and the oblique hole 10 of the tibial osteotomy 6. It is fixed by (7) and cut into the vibration saw through the groove (4).

상기와 같이 대퇴골과 경골의 독립적 정렬 및 절골은 도 1의 우측과 같은 이상적인 정렬과 인공관절로 대체되는 만큼의 직사각형의 절골은 실제 수술시에는 어렵기 때문에 수술 도중 불필요한 추가적인 절골이나 인대 및 근육의 절제에 의한 이완술이 필요한 단점이 있었다.As described above, the independent alignment and fracture of the femur and tibia are replaced by the ideal alignment and artificial joint as shown in the right side of FIG. There was a disadvantage that requires relaxation.

변형된 관절을 대퇴골과 경골을 각각 독립적 절골하는 종래의 기술은 정렬과 동시에 이 정렬에 대해 수직한 직사각형의 절골이 곤란하기 때문에 본 발명은 인공슬관절 치환 수술에서 수술자에게 절골시 정확한 대퇴골과 경골의 정렬을 복원 또는 유지토록 하면서도 아울러서 수술자가 의도하는 정확한 관절 간격으로 대퇴골 하단과 경골 상단을 직사각형으로 절골할 수 있는 대퇴 경골 연계식 절골술용 연결장치(8)를 제공함에 있다.Since the conventional technique of independently deforming the deformed joint with the femur and the tibia is difficult to align and at the same time perpendicular to the alignment, the present invention provides accurate femoral and tibial alignment when the osteotomy is performed to the operator in artificial knee replacement surgery. The present invention provides a connection device 8 for femoral tibial linkage osteotomy, which allows the patient to articulate the femur bottom and the tibia top in a rectangular manner at the correct joint spacing.

도 1은 왼쪽 그림은 인체 다리의 해부학적 정렬과 오른쪽 그림은 슬관절 전치환술에서 신전 상태에서 이상적인 절골을 나타낸 그림Figure 1 shows the anatomical alignment of the human leg and the figure on the right shows the ideal osteotomy in the extension state in total knee arthroplasty.

도 2는 대퇴골 절골을 위한 정렬 상태와 대퇴골 절골기의 설치 상태도Figure 2 is an installation state of the alignment and femur osteotomy for the femur osteotomy

도 3은 경골 절골을 위한 정렬 상태와 경골 절골기의 설치 상태도Figure 3 is an installation state of the tibial osteotomy and the alignment state for tibial osteotomy

도 4는 대퇴 경골 연계식 절골술용 연결장치의 정면, 배면, 측면 그리고 사시도Figure 4 is a front, back, side and perspective view of the femoral tibial linked osteotomy linking device

도 5는 대퇴골 절골기와 연결장치의 결합 상태도5 is a coupling state of the femur osteotomy and the connecting device

도 6은 연결장치를 이용하여 인송슬관절 치환 수술시 대퇴경골연계절골술 사용례6 is a case of femoral tibial osteotomy in the case of replacement of the knee joint using a connecting device

* 도면의 주요 부분에 대한 부호 설명* Explanation of symbols on the main parts of the drawing

1:대퇴골용 정렬장치 2:대퇴골 절골기1: femur alignment device 2: femur osteotomy

3:핀 구멍 4.홈3: pin hole 4.groove

5.경골용 정렬장치 6.경골 절골기5. Tibia alignment device 6. Tibia osteotomy

7.핀 8.연결장치7.pin 8.connector

9.걸쇠 10.경사 구멍 11.보조선9. Clasp 10. Inclined Hole 11. Extension

인공슬관절 치환술에서 다리의 변형을 정복할 수 있는 정렬 유지와 원활한 관절운동을 할 수 있도록 정확한 절골을 위해 본 발명은 도 4와 같은 연결장치(8)를 고안하였다. 먼저 다리의 변형된 정렬을 맞추기 위해 정렬이 복원될 수 있는 최소한의 인대 및 근육의 이완술을 시행한 다음 도 2의 왼쪽 그림과 같은 대퇴골용정렬장치(1)를 이용하여 대퇴골 절골기(2)를 2 개의 구멍과 1 개의 경사 구멍(10)에 핀을(7) 박아 고정시키고, 외력을 가하여 대퇴골과 경골의 정렬을 유지시킨 상태에서 도 2의 우측 대퇴골 절골기의 홈(4)에 끼워지는 연결장치(8)의 걸쇠(9)가 홈(4) 내에서 좌우로 평행 이동하여 슬개건을 손상시키지 않는 임의의 위치에서 걸쇠(9)와 다시 수직으로 뚫린 핀 구멍(3)을 통하여 연결장치(8) 표면에 보조선(11)으로 표시된 평행한 2 개의 핀 구멍(3)에 핀(7)을 박는다. 이때 1조를 이루는 두 개의 핀(7)은 걸쇠(9)와 평행하며, 핀(7) 간의 간격은 경골 절골기(6)에 형성된 구멍(3)의 간격과 동일하여 연결장치(8)의 구멍(3)을 통하여 핀(7)을 경골에 고정한 후 연결장치(8)는 제거되고 고정된 2 개의 핀을 경골 절골기(6)의 구멍(3)에 끼우고 경사 구멍(10)에 핀(7)을 박으면 고정된다. 연결장치(8)의 걸쇠(9)와 보조선(11)으로 연결 표시된 1 조를 이루는 2개의 구멍(3)은 서로 평행하며, 각각의 조를 형성하는 2개의 구멍(3)은 걸쇠(9)로부터 동일한 거리에 있기 때문에 연결장치(8)에 핀(7)을 박는 구멍(3)을 달리하면 절골 간격이 대퇴골 절골 면과 평행하면서도 변화하게 된다The present invention devised a connecting device 8 as shown in FIG. 4 for accurate osteotomy so as to maintain alignment and smooth joint movement that can conquer the deformation of the leg in artificial knee arthroplasty. First, the ligaments and muscles can be relaxed to achieve the modified alignment of the legs. Then, the femoral osteotomy (2) is performed using the femoral alignment device (1) as shown in the left figure of FIG. A pin (7) is driven into two holes and one inclined hole (10), and the connection fits into the groove (4) of the right femur osteotomy of FIG. 2 while maintaining the alignment of the femur and tibia by applying external force. The latching device 9 of the device 8 is moved parallel to the left and right within the groove 4 and through the pin hole 3 again drilled perpendicularly to the clasp 9 at any position which does not damage the patellar tendon. 8) The pin 7 is embedded in two parallel pin holes 3 marked with auxiliary lines 11 on the surface. At this time, the two pins 7 forming a set are parallel to the clasp 9, and the spacing between the pins 7 is equal to the spacing of the holes 3 formed in the tibial osteotomy 6 so that the connection device 8 After fixing the pin (7) to the tibia through the hole (3), the connecting device (8) is removed and the two fixed pins are inserted into the holes (3) of the tibia osteotomy (6) and the pins in the inclined holes (10) (7) is fixed. The clasp 9 of the connecting device 8 and the two pairs of holes 3 marked by the auxiliary line 11 are parallel to each other, and the two holes 3 forming each pair are clasps 9 Since they are at the same distance from the other, different openings (3) for pins (7) in the connecting device (8) result in a change in the osteotomy gap parallel to the femoral osteotomy surface.

본 발명의 연결장치는 변형된 관절이 복원될 수 있는 최소한의 인대 및 근육 이완술을 시행하여 정렬을 맞추고 대퇴골용 절골기(2)를 설치한 다음 절골기에 연결장치(8)를 결합하여 경골 절골기(6)를 설치할 수 있는 핀(7)을 박은 후 연결장치(8)를 제거하고, 도3의 오른쪽 그림과 같이 박혀 있는 핀(7)에 연결장치(8)와 경골절골기(6)를 구멍(3)에 끼워 설치하고 홈(4)을 통하여 절골하기때문에 다리의 정렬 유지는 물론 연결장치(8)에 부여된 여러 조합의 구멍(3)을 이용하므로서 수술자가 의도하는 임의 절골 간격과 부합하는 직사각형으로 대퇴골 절골면과 평행하게 절골이 가능하게 된다.The connecting device of the present invention performs a minimum ligament and muscle relaxation that the deformed joints can be restored, adjusts the alignment, installs the femoral osteotomy 2, and then combines the connecting device 8 with the tibial osteotomy (6) and put the pin (7) can be installed, remove the connecting device (8), and the connecting device (8) and the tibial osteotomy (6) to the pin (7) embedded as shown in the right picture of Figure 3 Since it fits into the hole (3) and is cut through the groove (4), it maintains the alignment of the legs as well as using any combination of holes (3) provided in the connecting device (8) to match any osteotomy interval intended by the operator. It is possible to make an osteotomy parallel to the femur osteotomy surface.

상기와 같은 정확한 절골은 환자마다 상이한 해부학적 형태 변화에 용이하게 수술자가 시술할 수 있게 하고, 수술시간의 단축과 환자의 수술 후 조속한 회복 및 원활한 관절운동과 특히 부정렬 치환 수술의 경우 빈발하는 환자의 통증 증대, 삽입물의 과도 마모로 이한 수명 단축 및 재수술 위험을 방지할 수 있다.Such accurate osteotomy enables the operator to easily perform different anatomical morphological changes in different patients, and shorten the operation time, prompt recovery of the patient after surgery, and smooth joint movement and especially in the case of misalignment replacement surgery. Increased pain, excessive wear on the inserts can shorten the lifespan and the risk of reoperation.

도 6은 실제 슬관절 전치환 수술에서 임상에 적용한 예로, 슬관절 중앙 상부에 대퇴골 절골기(2)가 홈(4)에 연결장치(8)의 걸쇠(9) 끼워져 결합되어 있으며, 연결장치(8)의 구멍(3)에 2개의 핀(7)이 박혀 있고, 중앙에 수술중 다리의 정렬은 대퇴골두 중앙으로부터 발목 중앙으로 줄을 연장하여 확인한다.6 is a clinical example applied in the actual total knee arthroplasty operation, the femoral osteotomy 2 is inserted into the groove 4, the clasp 9 of the coupling device 8 is coupled to the upper middle of the knee joint, the coupling device 8 Two pins (7) are embedded in the hole (3) of the center, and the alignment of the legs during surgery in the center is confirmed by extending the string from the center of the femoral head to the center of the ankle.

Claims (3)

인공슬관절 치환술에서 대퇴골과 경골의 정열을 유지한 상태에서 대퇴골 하단을 절단하는 홈과 경골 상단을 절단하는 홈을 연계시켜 두 홈이 서로 평행하게 고정시키는 것을 특징으로하는 연결장치.Connection device characterized in that the two grooves are fixed in parallel to each other by linking the grooves for cutting the lower end of the femur and the groove for cutting the tibia in the state of maintaining the alignment of the femur and tibia in the artificial knee replacement surgery. 제 1항에 있어서 연결장치에 부여된 각각의 조를 이루는 구멍이 걸쇠 끝으로부터 1mm 간격으로 뚫어져 있는 연결장치The connecting device according to claim 1, wherein the holes of each jaw provided in the connecting device are drilled at an interval of 1 mm from the end of the latch. 제 1항에 있어서 연결장치에 부여된 각각의 조를 이루는 구멍이 걸쇠 끝으로부터의 거리가 인공 삽입물의 공칭 치수와 부합되게 뚫어져 있는 연결장치The connecting device of claim 1, wherein each of the jaws of the jaws provided in the connecting device is drilled such that the distance from the end of the clasp is consistent with the nominal dimension of the prosthesis.
KR10-2001-0006554A 2000-02-10 2001-02-09 Femorotibial Resector Linker For Knee Arthroplasty KR100399489B1 (en)

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WO2004084741A1 (en) * 2003-03-27 2004-10-07 Chong-Bum Kim Determination device for size of cutting block using connection device
KR100626212B1 (en) 2005-09-09 2006-09-20 서재곤 Femoral alignment guide device
KR100694873B1 (en) * 2005-05-26 2007-03-13 주식회사 대인정밀 water purifier
KR100941506B1 (en) * 2007-11-08 2010-02-10 서재곤 Alignment guide for femoral resection device and femoral implant impactor
KR20150113766A (en) * 2014-03-31 2015-10-08 김정훈 Binary data compression and restoration method and apparatus

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KR101073872B1 (en) 2009-12-14 2011-10-14 서경석 Tibia cutter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004084741A1 (en) * 2003-03-27 2004-10-07 Chong-Bum Kim Determination device for size of cutting block using connection device
KR100694873B1 (en) * 2005-05-26 2007-03-13 주식회사 대인정밀 water purifier
KR100626212B1 (en) 2005-09-09 2006-09-20 서재곤 Femoral alignment guide device
KR100941506B1 (en) * 2007-11-08 2010-02-10 서재곤 Alignment guide for femoral resection device and femoral implant impactor
KR20150113766A (en) * 2014-03-31 2015-10-08 김정훈 Binary data compression and restoration method and apparatus

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