WO1984000682A1 - Knee joint mechanism for artificial leg - Google Patents

Knee joint mechanism for artificial leg Download PDF

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Publication number
WO1984000682A1
WO1984000682A1 PCT/JP1983/000266 JP8300266W WO8400682A1 WO 1984000682 A1 WO1984000682 A1 WO 1984000682A1 JP 8300266 W JP8300266 W JP 8300266W WO 8400682 A1 WO8400682 A1 WO 8400682A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
knee
clamping
knee joint
joint mechanism
Prior art date
Application number
PCT/JP1983/000266
Other languages
French (fr)
Japanese (ja)
Inventor
Itsuro Takahama
Original Assignee
Itsuro Takahama
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.)
Filing date
Publication date
Application filed by Itsuro Takahama filed Critical Itsuro Takahama
Publication of WO1984000682A1 publication Critical patent/WO1984000682A1/en

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Classifications

    • 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/60—Artificial legs or feet or parts thereof
    • A61F2/64—Knee joints
    • A61F2/642—Polycentric joints, without longitudinal rotation
    • A61F2/644—Polycentric joints, without longitudinal rotation of the single-bar or multi-bar linkage type
    • 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2002/5007—Prostheses not implantable in the body having elastic means different from springs, e.g. including an elastomeric insert

Definitions

  • Invention relating to a prosthetic foot having a structure for giving elasticity to the knee by mitigating the risk of knee breakage for a user of a prosthetic foot
  • the knee joint has a supporting foot; during the phase, the upper body is securely supported;
  • a conventional prosthesis uses a friction clutch that operates when a load is applied to the knee and is released when the knee is unloaded.
  • the prosthetic limb walk in a way that does not break the knee?
  • the operation is unnatural.
  • a healthy person softens the impact of landing by bending his knees slightly when landing, but this is not possible with conventional prostheses. Therefore, we have invented a knee joint mechanism that can significantly increase cracking and give elasticity to the knee.
  • Fig. 1 is an explanatory diagram of changes in the posture of the right body during one cycle of human walking
  • Fig. 2 shows the conventional knee joint mechanism of a prosthesis.
  • FIG. 3 shows an embodiment of the present invention.
  • Fig. 4 is a perspective view of the embodiment.
  • Friction circle 4 3 ⁇ ⁇ ⁇ elastic body
  • the upper disk clamp (5.1) and the f disk clamp (5.2) are placed at the center of the n knee, and the disk clamps protruding left and right from them.
  • the left and right two friction disks (2a) are tightened at the part.
  • the center of the upper disk is removed from above, and the elastic body (4a) is placed there.
  • the "F" part of the thigh surrounding part (3) that compresses it from above is also on It is in the closing of the yen].

Abstract

The principle involved in generating a clutch force in a knee joint mechanism of the conventional artificial leg shown in Fig. 2 is as follows. When a load from the upper body acts to the rear of a shaft (2), a leg connecting part (3) tends to tilt backward to compress a spacer (4) and lift a shaft (1). As a result, a clamping part (5) clamps the shaft (2) attached to a lower leg (6). The moment about the shaft (2) produced by this clamping force is a clutch force which is increased in this mechanism. Embodiments are shown in Figs. 3 and 4. The dimensions can be varied to increase the clamping force. The clamping part in Fig. 2 is divided into upper and lower segments (5, 1) and (5, 2) which are connected by a shaft (10) so as to withstand large clamping forces. The shaft (2) of Fig. 2 can be replaced by two friction discs (2a) of large diameter positioned inside and outside the knee. Elasticity of the knee is produced by an elastic unit (4a) inserted between the leg connecting part (3) and the upper disc segment (5, 1).

Description

明 細 書  Specification
「発明の名称」  "Title of Invention"
義足の膝闋節機構  Prosthesis knee joint mechanism
「技術分野」  "Technical field"
大腿義足使用者の膝折れの危険をる ぐ し、 膝に弾力を与えるための構 造を持つ義足に関する発明  Invention relating to a prosthetic foot having a structure for giving elasticity to the knee by mitigating the risk of knee breakage for a user of a prosthetic foot
「背景技術」 及び 「考案の開示」  "Background technology" and "Disclosure of device"
膝関節には、 支持足.期には確実に上体を支持し、 浮足期には軽く回 fe  The knee joint has a supporting foot; during the phase, the upper body is securely supported;
する、 と う 2つの機能が必要である。 そして、 この 2つの機能の切換 えのために、 従来の義足においては 膝に荷重がかかると作動し、 除荷 されると解除される摩擦クラ ッ チが用 られている。 しかしながら、 ク ラ っ ^力が弱いので、 義足使用者は膝折れしない歩き方をしてお ？、 そ の動作は不自然である。 また、 健常者は、 着床すると膝を少し曲げて着 床の衝撃を柔らげるが、 従来の義足ではこの動作もできない。 そこで、 クラつチカを大幅に増加させ、 更に膝に弾力を与えるこ.とのできる膝関 節機構を発明した。 Two functions are required. To switch between these two functions, a conventional prosthesis uses a friction clutch that operates when a load is applied to the knee and is released when the knee is unloaded. However, because of the weakness of the clutch, does the prosthetic limb walk in a way that does not break the knee? However, the operation is unnatural. In addition, a healthy person softens the impact of landing by bending his knees slightly when landing, but this is not possible with conventional prostheses. Therefore, we have invented a knee joint mechanism that can significantly increase cracking and give elasticity to the knee.
「図面の簡単 説明」  "Brief description of drawings"
第 1図は人の歩行の一周期の間の右半身の姿勢の変化の解説図  Fig. 1 is an explanatory diagram of changes in the posture of the right body during one cycle of human walking
第 2図は従来の義足の膝関節機構の解説図  Fig. 2 shows the conventional knee joint mechanism of a prosthesis.
第 3図は本発明の実施例を示す図  FIG. 3 shows an embodiment of the present invention.
第 4図は実施例の斜視図  Fig. 4 is a perspective view of the embodiment.
1 , 2および； I 0 · · · 軸  1, 2 and; I 0 · · · axis
3 · · ·大腿接続部品 4 · · ' スぺ-サ  3 Thigh connection part 4
5 · · ·締付部品 6 · · ·  5 Tightening parts 6
ΟΜΡΙ 7および 8 · · ' ス ト ΟΜΡΙ 7 and 8
2 a . . . 摩擦円扳 4 3 · · ·弾性体  2 a... Friction circle 4 3 · · · elastic body
5· 1 · · '上円板締め 5· 2 · · · 下円板締め 5 1 · · 'Tighten upper disc 5 · 2 · · · Tighten lower disc
「発明を実施するための最良の形態」 "Best mode for carrying out the invention"
摩擦円板の直径が大きい程クラ ッ チ力が大き 。 また、 形状的には小 さい程良 。 したがって、 最良の形態は以下のように る n 膝の中央に 上円板締め （5. 1 ) および f円板締め （5 · 2) が置かれ、 それらか ら左右に張 出した円板締め部で左右 2個の摩擦円板 （2 a) が締付け られる。 また、 上円板締めの中央は上方からえぐ 取られてお]?、 そこ に弾性体 （4 a) が置かれ、 それを上方から圧縮する大腿接繞部品 （ 3 ) の" F部も上円扳締めの中に入]?込んで る。  The larger the diameter of the friction disk, the greater the clutch force. The smaller the shape, the better. Therefore, the best configuration is as follows: The upper disk clamp (5.1) and the f disk clamp (5.2) are placed at the center of the n knee, and the disk clamps protruding left and right from them. The left and right two friction disks (2a) are tightened at the part. In addition, the center of the upper disk is removed from above, and the elastic body (4a) is placed there. The "F" part of the thigh surrounding part (3) that compresses it from above is also on It is in the closing of the yen].

Claims

84/00682 84/00682
請 求の 範 囲 The scope of the claims
下腿に固定された摩擦円板 （2 a) 、 該摩擦円板を上下からはさんで 膝の後方で軸によって連結される上円板締め （ 5 · D および 円板締 め （5 · 2) 、 該下円板締めと膝の前方で軸によって連結され、 大腿に 接続固定される部品 （3 ) 、 および該大腿接続部品 （3 ) と上円板締め との間に挿入されて る弾性体 （4 &) によつて構成される膝関節機構 Friction disc fixed to the lower leg (2a), upper disc clamped by axle behind the knee with the friction disc sandwiched from above and below ( 5 · D and disc clamping (5 · 2) A part (3) connected to the lower disk clamp by a shaft in front of the knee and connected and fixed to the thigh; and an elastic body inserted between the thigh connection part ( 3 ) and the upper disk clamp. Knee joint mechanism composed of ( 4 &)
PCT/JP1983/000266 1982-08-12 1983-08-12 Knee joint mechanism for artificial leg WO1984000682A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57141584A JPS5932450A (en) 1982-08-12 1982-08-12 Knee joint mechanism of artificial leg

Publications (1)

Publication Number Publication Date
WO1984000682A1 true WO1984000682A1 (en) 1984-03-01

Family

ID=15295393

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1983/000266 WO1984000682A1 (en) 1982-08-12 1983-08-12 Knee joint mechanism for artificial leg

Country Status (2)

Country Link
JP (1) JPS5932450A (en)
WO (1) WO1984000682A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214086A (en) * 1988-01-21 1989-08-31 Hanger & Co Ltd J E Knee prosthesis with stance control.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63264263A (en) * 1987-04-21 1988-11-01 Mazda Motor Corp Cold transfer device for castings

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5234875B2 (en) * 1974-06-14 1977-09-06
JPS5246432B2 (en) * 1972-06-10 1977-11-24

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1047975A (en) * 1975-09-10 1979-02-06 Wayne E. Kleiner Shock absorbing container
JPS5246432A (en) * 1975-10-11 1977-04-13 Fuji Electric Co Ltd Electric equipment for oil-immersion type high voltge ac/dc converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246432B2 (en) * 1972-06-10 1977-11-24
JPS5234875B2 (en) * 1974-06-14 1977-09-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214086A (en) * 1988-01-21 1989-08-31 Hanger & Co Ltd J E Knee prosthesis with stance control.

Also Published As

Publication number Publication date
JPS6153061B2 (en) 1986-11-15
JPS5932450A (en) 1984-02-21

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