JPH084605B2 - Artificial hip joint - Google Patents
Artificial hip jointInfo
- Publication number
- JPH084605B2 JPH084605B2 JP61252517A JP25251786A JPH084605B2 JP H084605 B2 JPH084605 B2 JP H084605B2 JP 61252517 A JP61252517 A JP 61252517A JP 25251786 A JP25251786 A JP 25251786A JP H084605 B2 JPH084605 B2 JP H084605B2
- Authority
- JP
- Japan
- Prior art keywords
- stem
- hip joint
- artificial hip
- head
- slit
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は人体の股関節を修復するために用いる人工股
関節に関するものである。TECHNICAL FIELD The present invention relates to an artificial hip joint used for repairing a hip joint of a human body.
（従来の技術） 従来から用いられている人工股関節には大腿骨に挿入
固定するステムを備えるが、このステムの先端には寛骨
臼又は寛骨に着装した人工臼蓋中に受容され回動する人
工骨頭を具備したものが用いられる。このようにステム
先端に着装される人工骨頭は、金属製のステムでは一体
成形されたものもあるが、生体には固体差があることか
ら臼蓋にも大小の相違があり、そのような臼蓋に最も適
合した大きさの骨頭球を用いる必要がある。したがって
一般に骨頭球とステムとは別体で形成され、手術に先だ
って適当な骨頭球を選択し、ステム先端に嵌着した後に
使用される。(Prior Art) An artificial hip joint that has been conventionally used has a stem that is inserted and fixed in the femur. The tip of this stem is received in an acetabulum or an artificial acetabulum attached to the acetabulum and is rotated. The one provided with the artificial bone head is used. Some artificial bone heads attached to the tip of the stem in this way are integrally formed with a metal stem, but there are large and small differences in the acetabulum because there are individual differences in living bodies. It is necessary to use the size of the head ball that is the most suitable for the lid. Therefore, generally, the head and ball are formed as separate bodies, and an appropriate head and head is selected prior to the surgery, and the head is used after being fitted to the tip of the stem.
このように別体となった骨頭球とステムとを結合する
構造としては例えば特開昭51−67693に見られる如く、
第２図に示したようにステムＳの先端に円錐部Ｅを骨頭
球Ｋに形成した円錐孔Ｃ中に挿入することによって嵌着
（結合）するようにした人工股関節が多く使用されてい
る。As a structure for connecting the head and ball, which are separate bodies, to the stem, for example, as shown in JP-A-51-67693,
As shown in FIG. 2, an artificial hip joint is often used in which a conical portion E is inserted into a conical hole C formed in a head ball K at the tip of a stem S to be fitted (joined).
（発明が解決しようとする問題点） 上記のように別体の骨頭球をステム先端に嵌着する場
合、円錐部と骨頭球に穿設した円錐孔とが全面的に当接
した状態とはなり難く、そのため当接部分に応力集中が
起こり、セラミック製の骨頭球にあっては破損を生じ易
いという傾向にあった。(Problems to be Solved by the Invention) When a separate epiphyseal ball is fitted to the tip of the stem as described above, the state in which the conical portion and the conical hole formed in the conical surface are in full contact Therefore, stress concentration occurs at the abutting portion, and there is a tendency that damage is likely to occur in the ceramic head ball.
また、このような不都合を解消すべく上記公開公報に
見られるようなネジ山状の溝Ｍを円錐部Ｅに形成したも
のにあっては、ネジ山状の溝Ｍを形成する工程が必要で
あるばかりでなく、溝Ｍ中を消毒、滅菌することが難し
いこと及び一旦骨頭球とステムとを結合した後、骨頭球
を他のものと交換することができないという不都合があ
った。Further, in the case where the conical portion E is formed with the thread-shaped groove M as disclosed in the above-mentioned publication in order to eliminate such inconvenience, a step of forming the thread-shaped groove M is required. Not only that, but it is difficult to disinfect and sterilize the inside of the groove M, and there is the inconvenience that once the head and ball have been connected, the head and head cannot be replaced with another one.
（問題点を解決するための手段） 本発明は上記によりステム先端の円錐部に弾性変形を
可能とし、消毒、滅菌用媒体の流入可能とするスリット
を形成したことを特徴とする。(Means for Solving the Problems) The present invention is characterized in that the above-described slits are formed in the conical portion at the tip of the stem so that elastic deformation can be performed and a disinfection and sterilization medium can flow in.
（実施例） 以下、図により実施例を具体的に説明する。(Example) Hereinafter, an example will be specifically described with reference to the drawings.
第１図（イ）は本発明に係る人工股関節を構成するス
テム１の部分図を示し、このステム１の先端には円錐部
２が形成され、該円錐部２には縦方向のスリット３が形
成してある。FIG. 1 (a) shows a partial view of a stem 1 that constitutes an artificial hip joint according to the present invention. A conical portion 2 is formed at the tip of the stem 1, and a longitudinal slit 3 is formed in the conical portion 2. Has been formed.
このようなスリット３としては円錐部２の軸中心に至
る深さに形成したものが好ましいが、ステム１の材質や
必要に応じて軸中心より深く、場合によっては円錐部２
を半円状に２分割するように直径方向に通したスリット
であってもよい。It is preferable that the slit 3 is formed so as to have a depth reaching the axial center of the conical portion 2. However, the slit 3 is deeper than the axial center of the material of the stem 1 and, if necessary, the conical portion 2 in some cases.
It may be a slit that passes through in a diametrical direction so as to be divided into two semicircular shapes.
さらに同図（ロ）で示すようにらせん状（曲り状）の
スリット３′を円錐部２に形成したものであってもよ
い。Further, as shown in FIG. 2B, a spiral (curved) slit 3 ′ may be formed in the conical portion 2.
また、スリット３、３′の幅としては任意の幅を形成
することができるが、骨頭球との求める結合状態に応じ
て最適の値が選ばれるが、ステム１がステンレス製のも
のにあっては0.005〜2.5mm程度のスリット幅が良好なる
結合状態を示した。The slits 3 and 3'can be formed in any width, but the optimum value is selected according to the connection state with the head ball, but the stem 1 is made of stainless steel. Shows a bonded state in which the slit width of 0.005 to 2.5 mm is good.
（発明の効果） 叙上のように、本発明によれば骨頭球にあけた円錐孔
に挿入するステムの先端円錐部にスリットを形成したも
のであることから、円錐孔の内壁面に対し総体的に当接
した状態で結合するため、たとえセラミック製の骨頭球
であっても破損する恐れは解消できる。またステムに対
する骨頭球の嵌着作業も極めて容易となる。(Effect of the Invention) As described above, according to the present invention, since the slit is formed in the tip conical portion of the stem that is inserted into the conical hole formed in the condylar ball, the entire inner wall surface of the conical hole is Since they are connected in a state of abutting against each other, even if the head ball is made of ceramic, the risk of damage can be eliminated. Further, the work of fitting the epiphyseal ball to the stem becomes extremely easy.
さらにスリットを通して消毒、滅菌のための媒体を導
き入れることができるため骨頭球の円錐孔内部まで十分
に消毒、滅菌できるなど安全で信頼性のある人工股関節
をもたらすことができる。Further, since a medium for disinfection and sterilization can be introduced through the slit, a safe and reliable artificial hip joint can be provided, which can sufficiently disinfect and sterilize the inside of the conical hole of the epiphyseal ball.
第１図（イ）、（ロ）はそれぞれ本発明実施例に係る人
工股関節を構成するステムの部分斜視図である。 第２図（イ）は従来の人工股関節を構成するステムと骨
頭球の装着状態を示す一部破断面図、第２図（ロ）は同
図（イ）におけるステムのみの部分斜視図である。 1:ステム、2:円錐部 3,3′：スリット1 (a) and 1 (b) are partial perspective views of a stem constituting an artificial hip joint according to an embodiment of the present invention. FIG. 2 (A) is a partially broken sectional view showing a mounted state of a stem and a condyle ball constituting a conventional artificial hip joint, and FIG. 2 (B) is a partial perspective view of only the stem in FIG. 2 (A). . 1: Stem, 2: Conical part 3,3 ′: Slit
Claims (2)
る骨頭球を先端に具備したステムより成る人工股関節に
おいて、ステム先端に円錐部を形成するとともに該円錐
部にスリットが形成されていることを特徴とする人工股
関節。1. An artificial hip joint comprising a stem having a head of a phalanx that rotates in the acetabulum or socket on the hipbone side, wherein a conical portion is formed at the tip of the stem and a slit is formed at the conical portion. The artificial hip joint characterized by being.
かつスリット幅が0.005〜2.0mmであることを特徴とする
特許請求の範囲第１項記載の人工股関節。2. The slit is longitudinal or spiral,
The artificial hip joint according to claim 1, wherein the slit width is 0.005 to 2.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61252517A JPH084605B2 (en) | 1986-10-23 | 1986-10-23 | Artificial hip joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61252517A JPH084605B2 (en) | 1986-10-23 | 1986-10-23 | Artificial hip joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63105759A JPS63105759A (en) | 1988-05-11 |
| JPH084605B2 true JPH084605B2 (en) | 1996-01-24 |
Family
ID=17238469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61252517A Expired - Fee Related JPH084605B2 (en) | 1986-10-23 | 1986-10-23 | Artificial hip joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH084605B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8915234B2 (en) | 2010-10-25 | 2014-12-23 | Briggs & Stratton Corporation | Fuel cap |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6190417B1 (en) | 1999-07-19 | 2001-02-20 | Kyocera Corporation | Femoral prosthesis device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES442150A1 (en) * | 1974-10-29 | 1977-03-16 | Feldmuehle Anlagen Prod | Improvements introduced in an endoprotesis of articulation, in particular hip joint prótesis. (Machine-translation by Google Translate, not legally binding) |
| EP0024442A1 (en) * | 1979-08-22 | 1981-03-11 | Rosenthal Technik AG | Composite endoprosthesis consisting of a metallic body and a ceramic joint |
-
1986
- 1986-10-23 JP JP61252517A patent/JPH084605B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8915234B2 (en) | 2010-10-25 | 2014-12-23 | Briggs & Stratton Corporation | Fuel cap |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63105759A (en) | 1988-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |