JPH0567290B2 - - Google Patents
Info
- Publication number
- JPH0567290B2 JPH0567290B2 JP16562189A JP16562189A JPH0567290B2 JP H0567290 B2 JPH0567290 B2 JP H0567290B2 JP 16562189 A JP16562189 A JP 16562189A JP 16562189 A JP16562189 A JP 16562189A JP H0567290 B2 JPH0567290 B2 JP H0567290B2
- Authority
- JP
- Japan
- Prior art keywords
- inner cup
- back metal
- artificial
- groove
- bone
- 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
- 239000002184 metal Substances 0.000 claims description 28
- 210000000988 bone and bone Anatomy 0.000 claims description 16
- 210000000588 acetabulum Anatomy 0.000 description 12
- 230000002265 prevention Effects 0.000 description 7
- 210000004394 hip joint Anatomy 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000001981 hip bone Anatomy 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 1
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003689 pubic bone Anatomy 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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
- A61F2/34—Acetabular cups
-
- 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
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］
本発明は患者に装着される人工関節に関し、詳
細には長期間の使用においても部材同士の強固な
接合を維持し、しかも各部材は施着時の姿勢・状
態を保持し続けることのできる人工関節に関する
ものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an artificial joint that is attached to a patient, and more particularly, the present invention relates to an artificial joint that is attached to a patient, and in particular maintains strong joints between members even during long-term use, and each member is This relates to an artificial joint that can continue to maintain its posture and condition when worn.
以下においては股関節に適用される人工関節に
ついて述べるが、本発明の適用対象はこの例に限
定して解釈されるものではない。 Although an artificial joint applied to a hip joint will be described below, the scope of application of the present invention is not interpreted as being limited to this example.
［従来の技術］
第４図は人体の股関節部分を示す概略説明図で
あり、恥骨Ｂの寛骨臼B1に大腿骨Ａの骨頭部A1
が回転自在に嵌装されている。傷害又は疾病によ
り上記骨頭部を切除しなければならなくなつた場
合、鎖線Ｒで囲む部分を切除し、第５，６図に示
す様な人工関節を代替使用する。該人工関節に大
腿骨Ａの残部に接合される人工骨２（一部分を第
５図で破線に示す）と、寛骨Ｂ側に取付けられる
臼蓋１によつて形成され、該臼蓋１に形成した中
央の凹部１４に前記人工骨２の骨頭部２ａを嵌装
し、臼蓋１と人工骨２は相互に自在に回転できる
様に嵌め合わされる。[Prior Art] Fig. 4 is a schematic explanatory diagram showing the hip joint part of a human body, in which the acetabulum B1 of the pubic bone B and the bone head A1 of the femur A are attached.
is rotatably fitted. If the femoral head has to be removed due to injury or disease, the portion surrounded by the chain line R is removed and an artificial joint as shown in FIGS. 5 and 6 is used instead. The artificial joint is formed by an artificial bone 2 (part of which is shown in broken lines in FIG. 5) that is joined to the rest of the femur A, and an acetabulum 1 that is attached to the hip bone B side. The femoral head 2a of the artificial bone 2 is fitted into the formed central recess 14, and the acetabulum 1 and the artificial bone 2 are fitted so that they can rotate freely with respect to each other.
この様な人工骨を用いる場合において、骨セメ
ントを使用せず生体骨の成長によつて残存寛骨に
上記臼蓋１を固定する様なケースでは、臼蓋１と
しては金属製のバツクメタル１１の内側に高強度
合成樹脂（例えば超高密度高分子量ポリエチレ
ン）製のインナーカツプ１２を嵌合したものが汎
用されている。この臼蓋１の人体への装着に当た
つては、まず上記バツクメタル１１をビス１３に
よつて残存骨に初期固定した後、前記インナーカ
ツプ１２を上記バツクメタル１１の内側に嵌め込
む。この嵌め込みにおけるバツクメタル１１とイ
ンナーカツプ１２の固定に当たつては第５，６図
に示す例では、バツクメタル１１の内周側の数箇
所に突起１１ａを突設しておき、インナーカツプ
１２の外周に沿つて形成した周溝を前記突起１１
ａに係合して、インナーカツプ１２の抜け出しを
防止する構造を採用している。また別の抜け出し
防止構造の例としてはバツクメタル１１の開口部
側の内周壁に沿つて周溝を形成すると共に、イン
ナーカツプ１２の外周側に上記周溝に対して弾性
的に係合するスナツプ片を突設し、両部材を係合
する構造を採用することもできる。 When using such an artificial bone, in cases where the acetabulum 1 is fixed to the remaining acetabulum by the growth of living bone without using bone cement, the acetabulum 1 may be made of metal back metal 11. A cup in which an inner cup 12 made of high-strength synthetic resin (for example, ultra-high-density, high-molecular-weight polyethylene) is fitted inside is commonly used. When attaching this acetabulum 1 to a human body, first, the back metal 11 is initially fixed to the remaining bone with screws 13, and then the inner cup 12 is fitted inside the back metal 11. In order to fix the back metal 11 and the inner cup 12 in this fitting process, in the example shown in FIGS. The circumferential groove formed along the protrusion 11
A structure is adopted to prevent the inner cup 12 from slipping out by engaging with the inner cup 12. Another example of a slip-out prevention structure is to form a circumferential groove along the inner circumferential wall of the back metal 11 on the opening side, and to provide a snap piece on the outer circumferential side of the inner cup 12 that elastically engages with the circumferential groove. It is also possible to adopt a structure in which the two members are engaged with each other by protruding from the two members.
［発明が解決しようとする課題］
ところが第５図に示す様な臼蓋１においては、
いつたんバツクメタル１１にインナーカツプ１２
を嵌め込んでしまうと、これを再度取り外すこと
は困難であり、例えば手術時には、バツクメタル
１１をねじ１３で取付けた後、インナーカツプ１
２がうまくはまるかどうかテストする意味で必ず
練習をしてみるのが通常である。あるいは又再手
術時に凹部１４のサイズが異なるインナーカツプ
１２に変換する必要が生じたときなどには、特別
な取外し用具を予め準備しておくと共に、大がか
りな取り外し作業を要するという問題があつた。[Problem to be solved by the invention] However, in the acetabulum 1 as shown in FIG.
Back metal 11 and inner cup 12
Once inserted, it is difficult to remove it again. For example, during surgery, after attaching the back metal 11 with the screws 13, the inner cup 1
It is normal to always practice to test whether 2 fits well. Alternatively, when it becomes necessary to change the inner cup 12 to a recess 14 having a different size during a reoperation, there is a problem in that a special removal tool must be prepared in advance and a large-scale removal work is required.
またバツクメタル１１とインナーカツプ１２の
嵌合には、周溝と突起１１ａ（又は前記スナツプ
片）の係合構造が採用されているので、この係合
部分には大きな応力が集中的に作用してインナー
カツプ１２を破損し易く、さらに長期間の使用に
よつて突起１１ａ等が摩耗してバツクメタル１１
とインナーカツプ１２の間にがたつきを生じるこ
ともあつた。 Furthermore, since the engagement structure of the circumferential groove and the protrusion 11a (or the aforementioned snap piece) is adopted for fitting the back metal 11 and the inner cup 12, large stress acts intensively on this engagement part. The inner cup 12 is easily damaged, and the protrusions 11a etc. are worn out due to long-term use, causing the back metal 11 to become damaged.
In some cases, rattling occurred between the inner cup 12 and the inner cup 12.
また第５，６図に示す様にインナーカツプ１２
の端面に人工骨２の脱臼防止用にフラツト部１２
ａを形成するものにあつては、該フラツト部１２
ａは人体に対して常に後方の位置を保つ様に固定
されていなければならないが、上記係合構造にお
いては、インナーカツプ１２がバツクメタル１１
に対して軸芯を中心として簡単に回転移動してし
まい、人工骨２が脱臼する可能性が高いという不
具合もあつた。 In addition, as shown in Figures 5 and 6, the inner cup 12
A flat portion 12 is provided on the end surface of the artificial bone 2 to prevent dislocation of the artificial bone 2.
a, the flat portion 12
a must be fixed so as to always maintain a rear position with respect to the human body, but in the above engagement structure, the inner cup 12 is attached to the back metal 11.
There was also a problem in that the artificial bone 2 easily rotated around the axis, and there was a high possibility that the artificial bone 2 would dislocate.
そこで本発明者らは、バツクメタルとインナー
カツプが簡単に着脱できる構造であり、しかも長
期間の使用にわたつて上記両部材が極めて強固に
固定できる臼蓋を備えた人工関節を提供する目的
で研究を重ね、本発明を完成した。 Therefore, the present inventors conducted research for the purpose of providing an artificial joint that has a structure in which the back metal and inner cup can be easily attached and detached, and also has an acetabulum that allows these two components to be extremely firmly fixed over long periods of use. After repeated steps, the present invention was completed.
［課題を解決する為の手段］
上記目的を達成し得た本発明は、バツクメタル
開口端部の内周壁に沿つてテーパ付き環状溝を形
成し、該環状溝には前記インナーカツプの端面を
前記バツクメタルの奥側へ押圧するテーパ付きス
ナツプリングを係合してなることを要旨とするも
のである。[Means for Solving the Problems] The present invention has achieved the above objects by forming a tapered annular groove along the inner circumferential wall of the opening end of the back metal, and in which the end surface of the inner cup is inserted into the annular groove. The gist is that a tapered snap ring is engaged that presses the back metal toward the back side.
［作用及び実施例］
第１図は本発明の代表的な実施例を示す断面説
明図、第２図は第１図の底面図である。中空半球
状のバツクメタル１１の適所にはビス用孔１６が
適数形成され、該バツクメタル１１の内側には高
強度合成樹脂製のインナーカツプ１２が嵌め込ま
れ、該インナーカツプ１２の略中央部には人工骨
２の骨頭部２ａを回転自在に嵌装する凹部１４が
形成される。そして前記バツクメタル１１とイン
ナーカツプ１２は次に示す係合構造によつて固定
される。すなわちバツクメタル１１の開口側の内
周壁には周方向に沿つてテーパ付き環状溝１１ｂ
が形成され、該環状溝１１ｂの開口側の側壁に
は、溝幅を溝底面側に向かつて漸次縮小するテー
パ面１１b1が形成される。そしてインナーカツプ
１２の開口側の端面１２Ａは前記環状溝１１ｂの
奥側側壁１１b2より開口側へ若干突出する様に設
定され、上記環状溝１１ｂには、外周方向へ弾性
的に拡張するスナツプリング２０が嵌め込まれ
る。そして該スナツプリング２０の上記テーパ面
１１b1に当接する端面には、周方向に沿つてテー
パ面２０ａが形成され、該テーパ面２０ａはスナ
ツプリング２０の肉厚を外周側へ向かつて暫時薄
くする方向に形成され、スナツプリング２０の拡
張力によつて該スナツプリング２０自体がテーパ
面１１b1に沿つて開口端と反対側へ移動する押圧
力を作用し、これによつてインナーカツプ１２を
バツクメタル１１の奥側へ押圧し、この両部材１
１，１２の間でがたつきを生じない様に構成して
いる。[Operations and Examples] FIG. 1 is a cross-sectional explanatory view showing a typical example of the present invention, and FIG. 2 is a bottom view of FIG. 1. An appropriate number of screw holes 16 are formed at appropriate locations in the hollow hemispherical back metal 11, and an inner cup 12 made of high-strength synthetic resin is fitted inside the back metal 11. A recess 14 is formed into which the femoral head 2a of the artificial bone 2 is rotatably fitted. The back metal 11 and the inner cup 12 are fixed by the following engagement structure. That is, the inner peripheral wall of the back metal 11 on the opening side has a tapered annular groove 11b along the circumferential direction.
A tapered surface 11b1 is formed on the side wall of the annular groove 11b on the opening side, and the groove width gradually decreases toward the groove bottom side. The opening side end surface 12A of the inner cup 12 is set to slightly protrude toward the opening side from the inner side wall 11b 2 of the annular groove 11b, and the annular groove 11b has a snap ring 20 that elastically expands in the outer circumferential direction. is inserted. A tapered surface 20a is formed along the circumferential direction on the end surface of the snap ring 20 that comes into contact with the tapered surface 11b1 , and the tapered surface 20a is designed to temporarily reduce the thickness of the snap ring 20 toward the outer circumference. The expansion force of the snap ring 20 applies a pressing force that causes the snap ring 20 itself to move along the tapered surface 11b1 to the side opposite to the opening end, thereby moving the inner cup 12 to the back side of the back metal 11. Press these two members 1
It is constructed so that no wobbling occurs between 1 and 12.
上記スナツプリング２０は、耐食性が高く且つ
高剛性金属材料（ステンレス鋼又はTi合金等）
又は合成樹脂材料によつて形成される。尚該スナ
ツプリング２０の着脱作業を行ない易くするため
に、第２図に示す様に、端部に孔部２０ｃ，２０
ｃを形成しておくことが好ましく、これによつて
上記スナツプリング２０はプライヤー等の手術用
工具によつて簡単に環状溝１１ｂとの着脱がで
き、バツクメタル１１とインナーカツプ１２の固
定・取出しも容易に何度でも行なえる様になつ
た。 The above-mentioned snap spring 20 is made of a metal material with high corrosion resistance and high rigidity (stainless steel, Ti alloy, etc.)
Or made of synthetic resin material. In order to facilitate the attachment and detachment of the snap spring 20, holes 20c and 20 are provided at the ends as shown in FIG.
It is preferable to form a groove c, whereby the snap ring 20 can be easily attached to and detached from the annular groove 11b using a surgical tool such as pliers, and the back metal 11 and inner cup 12 can be easily fixed and removed. Now I can do it as many times as I want.
他方インナーカツプ１２の外周面には、第３図
に示す様な切欠き溝１２ｂが形成される。そして
バツクメタル１１の肉厚方向に貫通して配設され
る回転防止用ピン２１の先端がこの切欠き溝に係
合し、インナーカツプ１２における軸芯を中心と
する回転を防止する。上記図例においては１つの
回転防止用ピン２１に対して軸心を中心として中
心角10度程度の間隔をあけて３条の切欠き溝１２
ｂを形成した例を示したが、該回転防止用ピン２
１に係合可能な溝であれば配設数及び配設ピツチ
は任意である。また回転防止用ピン２１としては
ビス、ボルト、ピン等公知のものを利用したもの
でも良い。なお前記切欠き溝１２ｂはインナーカ
ツプ１２の軸芯と平行な方向に設けることが好ま
しく、これによつて切欠き溝が案内溝として作用
し、回転防止用ピンを挿設したバツクメタル１１
を寛骨へ仮固定した後であつても、インナーカツ
プの脱着が簡単に行なえる。 On the other hand, the outer peripheral surface of the inner cup 12 is formed with a cutout groove 12b as shown in FIG. The tip of a rotation prevention pin 21, which is disposed to penetrate through the back metal 11 in the thickness direction, engages with this notch groove, thereby preventing rotation of the inner cup 12 about its axis. In the example shown above, three notched grooves 12 are formed on one anti-rotation pin 21 at an interval of about 10 degrees from the center axis.
Although the example in which the rotation prevention pin 2 is formed is shown, the rotation prevention pin 2
The number and pitch of grooves provided are arbitrary as long as the grooves can be engaged with one another. Further, the rotation prevention pin 21 may be a screw, a bolt, a pin, or any other known type. It is preferable that the cutout groove 12b is provided in a direction parallel to the axis of the inner cup 12, so that the cutout groove acts as a guide groove and the back metal 11 into which the rotation prevention pin is inserted.
Even after temporarily fixing the inner cup to the hip bone, the inner cup can be easily attached and detached.
上記の回転防止用ピン２１により、インナーカ
ツプ１２の回転は確実に防止できるので、図例の
如く骨頭部２ａの脱臼を防止するフラツト部１２
ａを設けた臼蓋にあつては、人工骨２の抜出しを
完全に防止できることとなつた。 Since the rotation of the inner cup 12 can be reliably prevented by the above-mentioned rotation prevention pin 21, the flat portion 12 which prevents dislocation of the femoral head 2a as shown in the figure
In the case of the acetabulum provided with a, it became possible to completely prevent the artificial bone 2 from being pulled out.
上記スナツプリング２０の断面形状は図例の
他、半楕円形や多角形としたものであつても良
く、さらに該スナツプリング２０の端部構造は図
例だけに限定されず、端部同士を把持し易い様に
屈曲させたものや、Ｕ字型のばねを介して接続し
たもの等であつても構わない。 The cross-sectional shape of the snap spring 20 may be semi-elliptical or polygonal in addition to the illustrated example, and the end structure of the snap spring 20 is not limited to the illustrated example; It may be bent to make it easier or connected via a U-shaped spring.
［発明の効果］
本発明は以上の様に構成されているので、人工
関節の臼蓋を構成するバツクメタルとインナーカ
ツプは簡単に何度でも着脱できる様になり、しか
も上記両部材は一旦接合されると、抜け出し方向
及び回転方向に強固に固定され、長期間の使用に
当たつてがたつきや抜け出しを確実に防止でき、
人工骨と上記臼蓋の脱臼事故を起こすこともなく
なつた。[Effects of the Invention] Since the present invention is configured as described above, the back metal and inner cup that make up the acetabulum of the artificial joint can be easily attached and detached any number of times, and the above-mentioned two members are once joined. It is firmly fixed in the pulling out direction and rotating direction, and can reliably prevent rattling and pulling out during long-term use.
There is no longer any accidental dislocation of the artificial bone and the acetabulum.
第１図は本発明の代表的な実施例を示す断面説
明図、第２図は第１図の底面図、第３図はインナ
ーカツプの例を示す側面図、第４図は人体股関節
の例を示す説明図、第５図は従来例を示す断面説
明図、第６図は第５図の−線断面矢視図であ
る。
１……寛骨側臼蓋、２……人工骨、１１……バ
ツクメタル、１２……インナーカツプ、１３……
ビス、１４……凹部、１５……傾斜部、２０……
スナツプリング、２１……回転防止用ピン。
Fig. 1 is a cross-sectional explanatory diagram showing a typical embodiment of the present invention, Fig. 2 is a bottom view of Fig. 1, Fig. 3 is a side view showing an example of an inner cup, and Fig. 4 is an example of a human hip joint. FIG. 5 is an explanatory cross-sectional view showing a conventional example, and FIG. 6 is a cross-sectional view taken along the line - in FIG. 1... Acetabular acetabular, 2... Artificial bone, 11... Back metal, 12... Inner cup, 13...
Screw, 14... recess, 15... inclined part, 20...
Snap spring, 21... Pin for preventing rotation.
Claims (1)
プの凹部内に、人工骨の骨頭部が嵌装されてなる
人工関節であつて、前記バツクメタルの開口縁部
内周壁にテーパ付き環状溝を形成し、該環状溝に
は前記インナーカツプの端面を前記バツクメタル
の奥側へ押圧するテーパ付きスナツプリングを係
合してなることを特徴とする人工関節。 ２ 前記バツクメタルには、前記インナーカツプ
の回転防止用ピンを挿設すると共に、該インナー
カツプの外周部には、上記回転防止用ピンの先端
を嵌入する溝が形成されてなる請求項１に記載の
人工関節。[Scope of Claims] 1. An artificial joint in which the head of an artificial bone is fitted into a recess of an inner cup disposed inside a back metal, the joint having a tapered annular groove on the inner circumferential wall of the opening edge of the back metal. An artificial joint characterized in that the annular groove is engaged with a tapered snap ring that presses the end surface of the inner cup toward the inner side of the back metal. 2. A pin for preventing rotation of the inner cup is inserted into the back metal, and a groove is formed on the outer circumference of the inner cup into which the tip of the pin for preventing rotation is inserted. artificial joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16562189A JPH0329650A (en) | 1989-06-27 | 1989-06-27 | Artificial joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16562189A JPH0329650A (en) | 1989-06-27 | 1989-06-27 | Artificial joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0329650A JPH0329650A (en) | 1991-02-07 |
| JPH0567290B2 true JPH0567290B2 (en) | 1993-09-24 |
Family
ID=15815842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16562189A Granted JPH0329650A (en) | 1989-06-27 | 1989-06-27 | Artificial joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329650A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7785331B2 (en) * | 2005-06-30 | 2010-08-31 | Depuy Products, Inc. | Acetabular liner extraction device, kit and associated method |
| US8308810B2 (en) | 2009-07-14 | 2012-11-13 | Biomet Manufacturing Corp. | Multiple bearing acetabular prosthesis |
| JP2015051782A (en) | 2013-09-06 | 2015-03-19 | 東洋自動機株式会社 | Packing system |
-
1989
- 1989-06-27 JP JP16562189A patent/JPH0329650A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0329650A (en) | 1991-02-07 |
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