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KR20230121412A - Artificial knee joints - Google Patents

Artificial knee joints Download PDF

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Publication number
KR20230121412A
KR20230121412A KR1020220018265A KR20220018265A KR20230121412A KR 20230121412 A KR20230121412 A KR 20230121412A KR 1020220018265 A KR1020220018265 A KR 1020220018265A KR 20220018265 A KR20220018265 A KR 20220018265A KR 20230121412 A KR20230121412 A KR 20230121412A
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South Korea
Prior art keywords
femur
coupling member
artificial knee
tibia
knee joint
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KR1020220018265A
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KR102712435B1 (en
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황민석
황재석
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주식회사 브라이톤
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    • 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
    • A61F2/3836—Special connection between upper and lower leg, e.g. constrained
    • 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
    • A61F2/30721—Accessories
    • A61F2/30723—Plugs or restrictors for sealing a cement-receiving space
    • 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
    • A61F2/30756—Cartilage endoprostheses
    • 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
    • A61F2/3859—Femoral components
    • 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
    • A61F2/3877—Patellae or trochleae
    • 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
    • A61F2/389—Tibial components
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30448—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
    • A61F2002/30449—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives the adhesive being cement

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rheumatology (AREA)
  • Prostheses (AREA)

Abstract

본 발명은 인공 슬관절에 관한 것으로, 특히 환자의 대퇴골 하부 말단에 결합되는 대퇴골 장착되는 대퇴골 결합부재의 결합력을 견고히 할 수 있도록 한 인공 슬관절에 관한 것이다.
이를 위해 본 발명은 페그가 대퇴골의 하측으로부터 삽입되어 골 시멘트에 의해 대퇴골의 말단에 결합되는 대퇴골 결합부재와, 경골의 상측 말단에 결합되는 경골 결합부재와, 상기 경골 결합부재와 대퇴골 결합부재 사이에 설치되는 연골 플레이트로 구성된 인공 슬관절에 있어서, 상기 대퇴골 결합부재의 페그는 외측 둘레를 따라서 다수의 결합홈이 길이방향으로 길게 형성되고, 상기 결합홈은 폭방향의 내측을 향해 오목하게 라운드진 라운드부가 형성된다.The present invention relates to an artificial knee joint, and more particularly, to an artificial knee joint capable of strengthening the bonding force of a femoral coupling member mounted on the femur coupled to the lower end of the femur of a patient.
To this end, the present invention provides a femur coupling member in which a peg is inserted from the lower side of the femur and coupled to the distal end of the femur by bone cement, a tibia coupling member coupled to the upper end of the tibia, and between the tibia coupling member and the femur coupling member. In the artificial knee joint composed of a cartilage plate to be installed, the peg of the femoral coupling member has a plurality of coupling grooves formed along the outer circumference in the longitudinal direction, and the coupling groove has a round portion concavely rounded toward the inside in the width direction. is formed

Description

인공 슬관절{Artificial knee joints}Artificial knee joints}

본 발명은 인공 슬관절에 관한 것으로, 특히 환자의 대퇴골 하부 말단에 결합되는 대퇴골 장착되는 대퇴골 결합부재의 결합력을 견고히 할 수 있도록 한 인공 슬관절에 관한 것이다. The present invention relates to an artificial knee joint, and more particularly, to an artificial knee joint capable of strengthening the bonding force of a femoral coupling member mounted on the femur coupled to the lower end of the femur of a patient.

슬관절은 경골과 대퇴골 사이를 연결하는 관절부위로서, 슬관절의 마모와 뼈조직의 노화 및 사고로 인하여 슬관절이 회복 불가능한 상태에 놓이는 환자가 점차 증가하고 있다.The knee joint is a joint part connecting between the tibia and the femur, and the number of patients in which the knee joint is in an unrecoverable state due to wear of the knee joint, aging of bone tissue, and accidents is gradually increasing.

최근 슬관절부위의 심각한 손상으로 회복 불가능한 환자에게 인공 슬관절을 대치하는 시술이 널리 행해지고 있는데, 이러한 인공 슬관절의 예로서, 등록특허 제10-0522360호(인공 슬관절)에서는 도1 및 도2에 도시된 바와 같이 대퇴골(2)에 결합되는 대퇴골 결합부재(300)와, 경골(1)에 결합되는 경골 결합부재(100)와, 경골 결합부재(100)와 대퇴골 결합부재(300) 사이에 설치되는 연골 플레이트(200)로 구성된 구조를 제안하였다.Recently, a procedure for replacing an artificial knee joint has been widely performed for patients who cannot recover due to severe damage to the knee joint. As an example of such an artificial knee joint, in Patent No. 10-0522360 (artificial knee joint), The femoral coupling member 300 coupled to the femur 2 as well, the tibia coupling member 100 coupled to the tibia 1, and the cartilage plate installed between the tibia coupling member 100 and the femur coupling member 300 A structure consisting of (200) was proposed.

대퇴골 결합부재(300)는 대퇴골(2)의 하단에서 대퇴골(2)의 끝단이 수용될 수 있도록 대퇴골(2)을 향하는 면에 대퇴골 수용부(310)가 형성되어 있으며, 대퇴골과 결합을 위해 페그(peg)(320)가 형성되어 있다.The femur coupling member 300 has a femur accommodating portion 310 formed on the surface facing the femur 2 so that the end of the femur 2 can be accommodated at the lower end of the femur 2, and a peg for coupling with the femur. (peg) 320 is formed.

이러한 페그(320)는 그 표면이 매끈한 기둥 형태로서, 대퇴골의 하측으로부터 삽입되어 골 시멘트에 의해 고정된다.The peg 320 has a shape of a column with a smooth surface, and is inserted from the lower side of the femur and fixed by bone cement.

또한, 연골 플레이트 접촉부(330)는 연골에 대해 부드럽게 운동할 수 있도록 관절의 굽힘 방향으로 구면으로 형성된다. 그리고, 연골 플레이트(200)에 대해서 측방으로 이동하는 것을 방지하기 위해, 연골 플레이트 접촉부(330)에는 골짜기(340)가 형성된다.In addition, the cartilage plate contact portion 330 is formed in a spherical shape in the bending direction of the joint so that it can move smoothly with respect to the cartilage. Then, in order to prevent the cartilage plate 200 from moving laterally, a valley 340 is formed in the cartilage plate contact portion 330.

경골 결합부재(100)는 경골(1)의 상단부위에 결합되며, 경골(1)에 삽입되는 삽입리브(120)와, 삽입리브(120)에 일체로 형성된 베이스 플레이트(110)로 구성된다.The tibia coupling member 100 is coupled to the upper end of the tibia 1 and consists of an insertion rib 120 inserted into the tibia 1 and a base plate 110 integrally formed with the insertion rib 120.

베이스 플레이트(110)는 플레이트 본체(111)와, 대퇴골(2)을 향하는 면에 연골 안착부(113)가 요입되는 구조를 가지고 있다.The base plate 110 has a plate body 111 and a structure in which the cartilage seating portion 113 is recessed on the surface facing the femur 2 .

따라서, 경골 결합부재(100), 연골 플레이트(200), 대퇴골 결합부재(300)가 순차적으로 맞닿게 되고, 연골 플레이트(200)의 상단면에서 대퇴골 결합부재(300)가 접촉한 상태로 굽힘 운동이 가능하게 되는 것이다.Therefore, the tibia coupling member 100, the cartilage plate 200, and the femur coupling member 300 come into contact sequentially, and the upper surface of the cartilage plate 200 has the femur coupling member 300 in contact with the bending movement. this will be possible

그런데, 이러한 대퇴골 결합부재(300)는 페그(320)가 표면이 매끈한 기둥형태로 되어 있으므로, 대퇴골(2)에 견고히 부착되지 않고 이탈될 수 있고, 이로 인하여 보행의 불편함은 물론 환자에게 통증을 가져올 수 있어서 자칫 재수술을 해야하는 단점이 있게 된다.However, since the peg 320 of the femur coupling member 300 has a columnar shape with a smooth surface, it is not firmly attached to the femur 2 and can be separated, which causes discomfort in walking as well as pain to the patient. There is a downside to having to re-surgery.

<선행기술문헌><Prior art literature>

1. 등록특허 제10-0522360호1. Registered Patent No. 10-0522360

(인공 슬관절) (artificial knee joint)

본 발명은 이러한 종래의 문제점을 해결하기 위하여, 페그의 외측 둘레를 따라서 길이방향으로 길게 다수의 홈을 형성함으로써 홈으로 부착재인 골 시멘트가 유입되도록 함으로써 대퇴골의 하부 말단에 대퇴골 부착부재가 견고하게 부착될 수 있도록 한 인공 슬관절을 제공하는데 그 목적이 있다.In order to solve this conventional problem, the present invention forms a plurality of long grooves in the longitudinal direction along the outer circumference of a peg so that bone cement, an attachment material, flows into the grooves, so that the femur attachment member is firmly attached to the lower end of the femur. The purpose is to provide an artificial knee joint that can be.

상기와 같은 목적을 달성하기 위한 본 발명의 인공 슬관절은,The artificial knee joint of the present invention for achieving the above object,

페그가 대퇴골의 하측으로부터 삽입되어 골 시멘트에 의해 대퇴골의 말단에 결합되는 대퇴골 결합부재와, 경골의 상측 말단에 결합되는 경골 결합부재와, 상기 경골 결합부재와 대퇴골 결합부재 사이에 설치되는 연골 플레이트로 구성된 인공 슬관절에 있어서,A femur coupling member in which a peg is inserted from the lower side of the femur and coupled to the distal end of the femur by bone cement, a tibia coupling member coupled to the upper end of the tibia, and a cartilage plate installed between the tibia coupling member and the femur coupling member. In the configured artificial knee joint,

상기 대퇴골 결합부재의 페그는 외측 둘레를 따라서 다수의 결합홈이 길이방향으로 길게 형성되고, 상기 결합홈은 폭방향의 내측을 향해 오목하게 라운드진 라운드부가 형성된 것을 특징으로 한다.The peg of the femoral coupling member is characterized in that a plurality of coupling grooves along the outer circumference are formed long in the longitudinal direction, and the coupling groove is formed with a round portion concavely rounded toward the inner side in the width direction.

또한, 상기 대퇴골 결합부재에는 슬개골 보호부재가 접촉되며,In addition, the patella protection member is in contact with the femur coupling member,

상기 슬개골 보호부재는, 상기 대퇴골 결합부재에 접촉되는 전방부위가 반구형태로 된 접촉부가 형성되고, 상기 접촉부의 후방부위에는 슬개골에 삽입되는 기둥 형태의 삽입부가 복수개 형성되며, 상기 삽입부의 외측 둘레를 따라서 홈이 형성된다.In the patella protection member, a hemispherical contact portion is formed at the front portion contacting the femoral joint member, and a plurality of pillar-shaped insertion portions inserted into the patella are formed at the rear portion of the contact portion, and the outer circumference of the insertion portion is formed. Thus, a groove is formed.

이와 같이 구성된 본 발명에 따르면, 대퇴골 결합부재가 안정적으로 대퇴골의 하측 말단에 고정됨으로써 보행의 불편함이 해소됨은 물론 통증도 해소할 수 있는 장점을 가지게 된다.According to the present invention configured as described above, the femoral coupling member is stably fixed to the lower end of the femur, thereby having the advantage of being able to relieve pain as well as discomfort in walking.

도1 및 도2는 종래 기술에 따른 인공 슬관절의 구조를 보인 도.
도3은 본 발명에 의한 인공 슬관절의 대퇴골 결합부재의 구조를 보인 도.
도4는 도3의 측면 구조도.
도5는 대퇴골 결합부재에 슬개골 보호부재가 접촉된 상태를 보인 도.
도6은 슬개골 보호부재의 측면도.
도7은 슬개골 보호부재가 슬개골에 결합된 상태를 보인 도.1 and 2 are views showing the structure of an artificial knee joint according to the prior art.
Figure 3 is a view showing the structure of the femur joint member of the artificial knee joint according to the present invention.
Figure 4 is a side structural view of Figure 3;
Figure 5 is a view showing a state in which the patella protection member is in contact with the femur coupling member.
Figure 6 is a side view of the patella protection member.
7 is a view showing a state in which the patella protection member is coupled to the patella;

전술한 목적, 특징 및 장점은 첨부된 도면을 참조하여 상세하게 후술되며, 이에 따라 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명의 기술적 사상을 용이하게 실시할 수 있을 것이다.The above objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs will be able to easily implement the technical spirit of the present invention.

본 발명을 설명함에 있어서 본 발명과 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 상세한 설명을 생략한다.In describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

이하, 첨부 도면을 참조하여 본 발명의 실시 예를 상세하게 설명한다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

그러나, 다음에 예시하는 본 발명의 실시 예는 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 다음에 상술하는 실시 예에 한정되는 것은 아니다. However, the embodiments of the present invention exemplified below may be modified in many different forms, and the scope of the present invention is not limited to the embodiments described below.

본 발명의 실시 예는 당업계에서 통상의 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위하여 제공되어지는 것이다.The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

도3은 본 발명에 의한 인공 슬관절의 대퇴골 결합부재의 구조를 보인 도이고, 도4는 도3의 측면 구조도이며, 도5는 대퇴골 결합부재에 슬개골 보호부재가 접촉된 상태를 보인 도이다. 그리고, 도6은 슬개골 보호부재의 측면도이고, 도7은 슬개골 보호부재가 슬개골에 결합된 상태를 보인 도이다.Figure 3 is a view showing the structure of the femur joint member of the artificial knee joint according to the present invention, Figure 4 is a side structural view of Figure 3, Figure 5 is a view showing a state in which the patella protection member is in contact with the femur joint member. 6 is a side view of the patella protection member, and FIG. 7 is a view showing a state in which the patella protection member is coupled to the patella.

본 발명에 의한 인공 슬관절은 도1 및 도2의 종래기술에서와 같이 페그(320)가 대퇴골(2)의 하측으로부터 삽입되어 골 시멘트에 의해 대퇴골(2)의 말단에 결합되는 대퇴골 결합부재(300)와, 경골(1)의 상측 말단에 결합되는 경골 결합부재(100)와, 상기 경골 결합부재(100)와 대퇴골 결합부재(300) 사이에 설치되는 연골 플레이트(200)로 구성되어 있으며, 다만 본 발명과 종래기술과 대별되는 구조를 갖는 대퇴골 결합부재(300)와 슬개골 보호부재(400)의 구조를 도3 내지 도7까지를 참조하여 중점적으로 설명한다.The artificial knee joint according to the present invention is a femoral coupling member 300 in which a peg 320 is inserted from the lower side of the femur 2 and coupled to the distal end of the femur 2 by bone cement, as in the prior art of FIGS. 1 and 2 ) And, it consists of a tibia coupling member 100 coupled to the upper end of the tibia 1, and a cartilage plate 200 installed between the tibia coupling member 100 and the femur coupling member 300, but The structures of the femoral joint member 300 and the patella protection member 400, which have structures that are largely different from those of the present invention and the prior art, will be mainly described with reference to FIGS. 3 to 7.

도3 및 도4에서와 같이 상기 대퇴골 결합부재(300)의 페그(320)는 대퇴골 결합부재(300)로부터 상측으로 돌출되도록 형성됨으로써 대퇴골의 하측으로부터 삽입되어 부착재인 골 시멘트에 의해 고정된다.As shown in FIGS. 3 and 4, the peg 320 of the femur coupling member 300 is formed to protrude upward from the femur coupling member 300 and is inserted from the lower side of the femur and fixed by bone cement as an attachment.

이러한 고정력을 증대시키기 위하여 페그(320)는 외측에는 길이방향으로 길게 결합홈(321)이 형성되고, 이러한 결합홈(321)은 둘레를 따라서 등간격으로 다수개가 형성되며, 폭방향으로 내측을 향해 오목하게 라운드진 라운드부(322)를 갖게 된다.In order to increase this fixing force, the peg 320 is formed with long coupling grooves 321 in the longitudinal direction on the outside, and a plurality of these coupling grooves 321 are formed at equal intervals along the circumference, toward the inside in the width direction. It has a concavely rounded round portion 322 .

상기 라운드부(322)에 의해 결합홈(321)의 가공이 매우 쉬우며, 아울러 골 시멘트가 결합홈(321)에 빈공간이 없도록 충전될 수 있으므로, 견고한 결합력을 가지게 된다.Processing of the coupling groove 321 is very easy by the round portion 322, and since bone cement can be filled so that there is no empty space in the coupling groove 321, it has a strong bonding force.

즉, 상기 라운드부(322)는 밀링머신 등에 의해 가공이 쉬우며, 아울러 모서리 부분이 없으므로, 결합홈(321)의 내부에 골 시멘트가 고르고 빈틈없이 충전될 수 있는 것이다.That is, the round part 322 can be easily processed by a milling machine, etc., and since there are no corners, bone cement can be filled evenly and without gaps in the coupling groove 321 .

한편, 도5에서와 같이 상기 슬개골 보호부재(400)는 슬개골(500)이 금속성의 대퇴골 결합부재(300)에 직접 맞닿아 마모 또는 갈라짐 등의 손상을 방지하게 되는데, 도6에서와 같이 원반 형태로 된 본체(401)의 일측면에는 반구 형태의 접촉부(410)가 형성되어 상기 슬개골 보호부재(400)에 맞닿게 된다.On the other hand, as shown in FIG. 5, the patella protection member 400 prevents damage such as abrasion or cracking by directly contacting the patella 500 with the metallic femoral joint member 300. As shown in FIG. 6, it has a disc shape. A hemispherical contact portion 410 is formed on one side of the main body 401 to come into contact with the patella protection member 400.

이러한 접촉부(410)는 무릎의 접힘과 펼침 동작시에 회전하는 대퇴골 결합부재(300)의 외측면에 맞닿아 회전을 지지하면서도 원할한 회전이 가능하도록 매끄러운 반구 형태를 가지게 된다.The contact portion 410 has a smooth hemispherical shape to enable smooth rotation while abutting against the outer surface of the femoral joint member 300 that rotates during folding and unfolding operations of the knee to support rotation.

또한, 상기 본체(401)의 타측면에는 돌기 형태의 삽입부(420)가 돌출되어 형성된 구조를 가지는데, 상기 삽입부(420)는 본체(401)의 타측면에서 본체(401)와 직교하는 방향으로 돌출되는 기둥 형태를 가지게 되며, 120°간격으로 3개가 형성되어 있다.In addition, the other side surface of the main body 401 has a structure in which a protruding insertion part 420 protrudes, and the insertion part 420 is perpendicular to the main body 401 on the other side surface of the main body 401. It has a column shape protruding in the direction, and three are formed at 120° intervals.

상기 삽입부(420)는 중간부위의 외측둘레를 따라서 걸림홈(421)이 형성되고, 상기 걸림홈(421)도 내측으로 라운드진 형태를 가지게 됨으로써, 본체(401)의 타측면에 슬개골(500)을 위치시켜 고정시키게 된다.The insertion part 420 has a locking groove 421 formed along the outer circumference of the middle portion, and the locking groove 421 also has an inwardly rounded shape, so that the patella 500 is formed on the other side of the main body 401. ) is positioned and fixed.

즉, 도7에서와 같이 슬개골(500)의 일측부위에는 상기 삽입부(420)와 대응된 부위에 삽입홈(510)이 형성되고, 상기 삽입홈(510)에 슬개골 보호부재(400)의 삽입부(420)가 삽입된 다음 삽입홈(510)과 삽입부(520) 사이에 골 시멘트(600)가 채워지게 되면, 라운드 형상을 갖는 상기 걸림홈(421)에도 골 시멘트(600)가 빈틈없이 채워지게 되어 슬개골(500)과 슬개골 보호부재(400)가 견고하게 결합되는 것이다.That is, as shown in FIG. 7, an insertion groove 510 is formed on one side of the patella 500 corresponding to the insertion portion 420, and the patella protection member 400 is inserted into the insertion groove 510. When the bone cement 600 is filled between the insertion hole 510 and the insertion part 520 after the part 420 is inserted, the bone cement 600 is filled even in the round locking hole 421 without gaps. It is filled so that the patella 500 and the patella protection member 400 are firmly coupled.

이상으로 본 발명 내용의 특정한 부분을 상세히 기술하였는 바, 당업계의 통상의 지식을 가진 자에게 있어서, 이러한 구체적 기술은 단지 바람직한 실시 예일뿐이며, 이에 의해 본 발명의 범위가 제한되는 것이 아닌 점은 명백할 것이다. Having described specific parts of the present invention in detail above, it is clear to those skilled in the art that these specific descriptions are merely preferred embodiments, and the scope of the present invention is not limited thereby. something to do.

따라서, 본 발명의 실질적인 범위는 첨부된 청구항들과 그것들의 등가물에 의하여 정의된다고 할 것이다.Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

300 : 대퇴골 결합부재
320 : 페그
321 : 결합홈
322 : 라운드부
400 : 슬개골 보호부재
401 : 본체
410 : 접촉부
420 : 삽입부
421 : 걸림홈
500 : 슬개골
510 : 삽입홈
600 : 골 시멘트300: femur joint member
320: peg
321: coupling groove
322: round part
400: patella protection member
401: body
410: contact
420: insertion part
421: locking groove
500: patella
510: insertion groove
600: bone cement

Claims (2)

페그가 대퇴골의 하측으로부터 삽입되어 골 시멘트에 의해 대퇴골의 말단에 결합되는 대퇴골 결합부재와, 경골의 상측 말단에 결합되는 경골 결합부재와, 상기 경골 결합부재와 대퇴골 결합부재 사이에 설치되는 연골 플레이트로 구성된 인공 슬관절에 있어서,
상기 대퇴골 결합부재의 페그는 외측 둘레를 따라서 다수의 결합홈이 길이방향으로 길게 형성되고, 상기 결합홈은 폭방향의 내측을 향해 오목하게 라운드진 라운드부가 형성된 것을 특징으로 하는 인공 슬관절.
A femur coupling member in which a peg is inserted from the lower side of the femur and coupled to the distal end of the femur by bone cement, a tibia coupling member coupled to the upper end of the tibia, and a cartilage plate installed between the tibia coupling member and the femur coupling member. In the configured artificial knee joint,
The peg of the femoral coupling member is artificial knee joint, characterized in that a plurality of coupling grooves are formed long in the longitudinal direction along the outer circumference, and the coupling groove is formed with a round portion concavely rounded toward the inner side in the width direction.
 제1항에 있어서, 상기 대퇴골 결합부재에는 슬개골 보호부재가 접촉되며,
상기 슬개골 보호부재는, 상기 대퇴골 결합부재에 접촉되는 전방부위가 반구형태로 된 접촉부가 형성되고, 상기 접촉부의 후방부위에는 슬개골에 삽입되는 기둥 형태의 삽입부가 복수개 형성되며, 상기 삽입부의 외측 둘레를 따라서 홈이 형성된 것을 특징으로 하는 인공 슬관절.The method of claim 1, wherein the femur coupling member is in contact with the patella protection member,
In the patella protection member, a hemispherical contact portion is formed at the front portion contacting the femoral joint member, and a plurality of pillar-shaped insertion portions inserted into the patella are formed at the rear portion of the contact portion, and the outer circumference of the insertion portion is formed. Therefore, the artificial knee joint characterized in that the groove is formed.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100458340B1 (en) * 1995-09-29 2005-02-07 죤슨 앤드 죤슨 프로페셔날 인코포레이티드 Knee joint prosthesis
US20120123550A1 (en) * 2008-06-30 2012-05-17 Wright Abraham P Implantable patella component having a thickened superior edge
KR20130138187A (en) * 2010-08-12 2013-12-18 스미스 앤드 네퓨, 인크. Structures for use in orthopaedic implant fixation and methods of installation onto a bone
KR20210102320A (en) * 2018-12-10 2021-08-19 발데마르 링크 게엠베하 운트 코.카게 Knee Joint Endoprosthesis Sets and Instruments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100458340B1 (en) * 1995-09-29 2005-02-07 죤슨 앤드 죤슨 프로페셔날 인코포레이티드 Knee joint prosthesis
US20120123550A1 (en) * 2008-06-30 2012-05-17 Wright Abraham P Implantable patella component having a thickened superior edge
KR20130138187A (en) * 2010-08-12 2013-12-18 스미스 앤드 네퓨, 인크. Structures for use in orthopaedic implant fixation and methods of installation onto a bone
KR20210102320A (en) * 2018-12-10 2021-08-19 발데마르 링크 게엠베하 운트 코.카게 Knee Joint Endoprosthesis Sets and Instruments

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