JPH07121263B2 - Artificial long bones - Google Patents
Artificial long bonesInfo
- Publication number
- JPH07121263B2 JPH07121263B2 JP62182624A JP18262487A JPH07121263B2 JP H07121263 B2 JPH07121263 B2 JP H07121263B2 JP 62182624 A JP62182624 A JP 62182624A JP 18262487 A JP18262487 A JP 18262487A JP H07121263 B2 JPH07121263 B2 JP H07121263B2
- Authority
- JP
- Japan
- Prior art keywords
- bone
- head
- side part
- patient
- residual
- 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
-
- 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］ 本発明は大腿骨，上腕骨，脛骨等の長骨を骨頭側におい
て部分切除したときに使用される人工長骨に関し，詳細
には患者によって異なる切除寸法に合わせて短時間で寸
法調整でき、しかも残存骨に対して正確にしかも安定し
た接続状態を形成することのできる高精度な人工長骨に
関するものである。以下の説明においては大腿骨への適
用例を代表的に揚げて述べるが、本発明の適用対象はこ
れに限定して解釈されるべきではない。Description: TECHNICAL FIELD The present invention relates to an artificial long bone that is used when a long bone such as a femur, a humerus, or a tibia is partially excised on the epiphyseal side. The present invention relates to a highly accurate artificial long bone which can be adjusted in size in a short time according to different excision sizes and can form an accurate and stable connection state with respect to residual bone. In the following description, an example of application to the femur will be representatively described, but the application target of the present invention should not be limited to this.
［従来の技術］ 第５図は大腿骨１の形状を示す模式説明図である。股関
節側（図面の上方側）には球状の骨頭部２が形状され、
首部３を介して骨幹部４と接続され、該骨幹部４の下端
には膝関節を構成する骨端部５が形成されている。[Prior Art] FIG. 5 is a schematic explanatory view showing the shape of the femur 1. A spherical bone head 2 is formed on the hip joint side (upper side in the drawing),
It is connected to the diaphyseal portion 4 via the neck portion 3, and a bone end portion 5 that constitutes a knee joint is formed at the lower end of the diaphyseal portion 4.
傷害又は疾病により前記大腿骨１の股関節側の一部分を
切除しなければならなくなった場合は、切除後の代替骨
として第６図に示す様な人工骨９が使用される。即ち骨
頭部２の形状に倣って球部材６を形成すると共に、該球
部材６から首部材７を経てステム部８を一体的に形成し
たものが一般的に使用されている。そして前記ステム部
８は残存する人骨の骨幹部４に接合され、前記球部材６
が股関節に係合される。ところで上記人工骨９は一般に
ステンレス鋼やセラミックス等の素材を使って予め長め
に作られた１次加工品を、患者毎に適応させて２次的に
仕上げ加工して人骨の切除部分と交換するのが一般的な
手法である。When a part of the femur 1 on the hip joint side must be excised due to injury or illness, an artificial bone 9 as shown in FIG. 6 is used as a substitute bone after excision. That is, a spherical member 6 is formed following the shape of the bone head 2, and a stem portion 8 is integrally formed from the spherical member 6 through the neck member 7 is generally used. The stem portion 8 is joined to the diaphyseal portion 4 of the remaining human bone, and the ball member 6
Is engaged with the hip joint. By the way, the artificial bone 9 is generally a primary processed product made of a long material such as stainless steel or ceramics, which is preliminarily lengthened and is secondarily finished to be replaced for the excised part of the human bone. Is the general method.
［発明が解決しようとする問題点］ 上記首部材７とステム部８のなす角度α及び人工骨９の
頭部長さｌは多くの患者でほぼ一定であり個人差が少な
いので、角度α及び頭部長さｌについては一定角度及び
長さで製造された１次加工品が共通して利用できる。と
ころが骨幹部４の切断位置は患者の症状によって様々で
あり、ステム部８の必要長さLaは患者毎のレントゲン写
真等に基づいて決定し、決定長さに合わせて切断しなけ
ればならず、さらに残存骨との接合のために残存骨髄腔
内に挿入して人工骨９を支えるべきピン部8bの長さLbも
個々の患者の切除長さに合わせて２次加工しなければな
らない。またピン部8bの太さｄは髄腔の長さや広さに適
合させる必要があり、これらは患者の性別や年令等によ
って異なるので、患者に合わせる為の調整が必要であ
る。即ち事前の検査において設定された患者の切断位置
等から、人工骨９のステム部形成長さLa,挿入ピンの太
さｄ並びに挿入ピンの長さLbを決め、１次加工品を切削
加工しなければならなかった。例えば第６図では破線Ａ
で示す線に沿って２次加工する必要がある。[Problems to be Solved by the Invention] Since the angle α formed by the neck member 7 and the stem portion 8 and the head length 1 of the artificial bone 9 are almost constant in many patients and there are few individual differences, the angle α and As for the head length l, primary processed products manufactured at a constant angle and length can be commonly used. However, the cutting position of the diaphyseal portion 4 varies depending on the symptoms of the patient, and the required length La of the stem portion 8 must be determined based on an X-ray image of each patient, and cut according to the determined length. Further, the length Lb of the pin portion 8b which is to be inserted into the residual bone marrow cavity for supporting the artificial bone 9 for joining with the residual bone must be secondarily processed according to the resection length of each patient. Further, the thickness d of the pin portion 8b needs to be adapted to the length and width of the medullary cavity, and these differ depending on the patient's sex, age, etc. Therefore, it is necessary to adjust to match the patient. That is, the stem forming length La of the artificial bone 9, the thickness d of the insertion pin and the length Lb of the insertion pin are determined from the cutting position of the patient set in the preliminary inspection and the primary processed product is cut. I had to. For example, in FIG. 6, the broken line A
Secondary processing is required along the line indicated by.
しかしながら球部材６及び首部材７が存在する為、２次
加工に際してはこれらを損傷させない様に注意深く作業
する必要があって、病・医院外の専門家に外注しなけれ
ばならず、２次加工には長い時間を要していた。従って
例えば癌患者の様に１日も早く手術して人工骨との入れ
換えを行なう必要がある場合等において大きな障害とな
っていた。However, since the ball member 6 and the neck member 7 are present, it is necessary to perform a careful work during the secondary processing so as not to damage them, and it is necessary to outsource to a specialist outside the hospital or illness. It took a long time. Therefore, for example, in the case where it is necessary to perform surgery as early as one day to replace the artificial bone, such as a cancer patient, this has been a major obstacle.
またピン部8bの表面にバイオガラス等を溶射して骨髄組
織との親和性を向上させることも行なわれているが、こ
の場合人工骨９は1000℃以上の高熱に曝されることとな
る為熱変形によって球部材６の球面精度が劣化してしま
うといった問題を生じていた。Further, it is also practiced to spray bioglass or the like on the surface of the pin portion 8b to improve affinity with bone marrow tissue, but in this case, the artificial bone 9 is exposed to high heat of 1000 ° C. or higher. There has been a problem that the spherical accuracy of the spherical member 6 deteriorates due to thermal deformation.
そこで本発明らは、加工を短時間且つ簡単に行なうこと
ができる様な人工骨を提供する目的で研究を重ねた結果
本発明を完成するに至った。Therefore, the present inventors have completed the present invention as a result of repeated research for the purpose of providing an artificial bone that can be processed in a short time and easily.
［問題点を解決するための手段］ 前記目的を達成し得た本発明の人工長骨とは、骨頭部側
の切除部外観に合わせて形成された骨頭部を有すると共
に下記残存骨側パートとの接合側に凹部を備えた骨頭側
パートと、患者の残存骨髄腔内への挿入部を有すると共
に上記骨頭側パートとの接合側に前記凹部に対応した凸
部を備えた残存骨側パート（主として挿入ピン）からな
り、上記骨頭側パートの凹部はその凹部内の空洞部横断
面形状及び寸法が深さ方向に一定であり、上記残存骨側
パートの凸部はその突出部分横断面形状及び寸法が突出
方向に一定であり、上記骨頭側パートの凹部と上記残存
骨側パートの凸部を嵌合させることにより骨頭側パート
と残存骨側パートが接合される構成である。そして上記
骨頭側パートの凹部及び上記残存骨側パートの凸部は患
者の残存骨寸法に合わせて夫々切断可能である様に構成
した点に要旨を有するものである。[Means for Solving Problems] The artificial long bone of the present invention that has achieved the above object has a bone head formed according to the appearance of the excised portion on the bone head side, and the following residual bone side part. Of the bone head side part having a recessed portion on the joint side thereof, and an insertion part into the residual bone marrow cavity of the patient, and a residual bone side part having a protrusion portion corresponding to the recessed portion on the joint side of the bone head side part ( The concave portion of the bone head side part has a hollow cavity cross-sectional shape and dimensions in the concave portion that are constant in the depth direction, and the convex portion of the residual bone side part has a protruding portion cross-sectional shape and The dimension is constant in the protruding direction, and the condyle portion and the residual bone side part are joined by fitting the concave portion of the femoral head side part and the convex portion of the residual bone side part. Further, the gist is that the concave portion of the bone head side part and the convex portion of the residual bone side part are configured to be cut according to the size of the residual bone of the patient.
［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人工骨の正面
図、第２図は第１図の右側側面図である。球部材6,首部
材７及びステム部の接続部10bは一体的に形成されて骨
頭部側パート10を構成し、頭部長さｌは一定に形成さ
れ、前記接続部10bと首部材７のなす角度αも一定（一
般に40〜45度）で形成される。前記接続部10bの下側に
はピン11との接合用嵌合孔である凹部10aが形成され
る。尚前記接続部10bは予め２点鎖線Ｂに示す程度の長
さに形成される。前記凹部10aには、残存骨側パートで
あるピン11が嵌合され前記接続部10bと一体的に接合
（後述）される。第３図は第１図のIII−III線断面矢視
図であり、第４図（ａ）、（ｂ）はIVa−IVa線及びIVb
−IVb線の断面矢視図である。[Operation and Embodiment] FIG. 1 is a front view of an artificial bone showing a typical embodiment of the present invention, and FIG. 2 is a right side view of FIG. The ball member 6, the neck member 7 and the connecting portion 10b of the stem portion are integrally formed to form a bone head side part 10, and the head length l is formed constant, and the connecting portion 10b and the neck member 7 are The angle α formed is also constant (generally 40 to 45 degrees). A recess 10a, which is a fitting hole for joining with the pin 11, is formed below the connecting portion 10b. The connecting portion 10b is formed in advance to a length shown by a two-dot chain line B. A pin 11, which is a residual bone side part, is fitted into the recess 10a and integrally joined with the connecting portion 10b (described later). FIG. 3 is a sectional view taken along the line III-III of FIG. 1, and FIGS. 4 (a) and 4 (b) are IVa-IVa lines and IVb.
FIG. 4 is a cross-sectional view taken along the line IVb.
ピン11の挿入部である凸部11aの突部分断面、並びに前
記凹部10aの空洞部断面は矩形に形成され、両者の横幅d
2及び縦幅d1は共通サイズで統一されており、またこれ
ら断面の形状及び寸法が深さ方向に一定となっている。The projecting part cross section of the convex part 11a which is the insertion part of the pin 11 and the hollow part cross section of the concave part 10a are formed in a rectangular shape, and the lateral width d of both is formed.
2 and the vertical width d 1 are unified in common size, and the shapes and dimensions of these cross sections are constant in the depth direction.
上記ピン11は残存骨幹部４（第２図の破線で示す）の髄
腔内に挿込まれることになるので、該ピン11は予め長め
に形成しておき、患者の切断位置に合わせてピン長さLb
を調整する。また該ピン11中間部の横幅d4，d6及び縦幅
d3，d5は、性別や年令等によって異なる患者の髄腔太さ
に合わせて数種類のものを準備しておき、その都度患者
の寸法と合致するサイズのものを使用するのが好まし
い。従ってピン11の長さについても予め数種類に分けて
作っておいても良い。Since the pin 11 is to be inserted into the medullary cavity of the residual diaphysis portion 4 (shown by the broken line in FIG. 2), the pin 11 should be formed long in advance, and the pin 11 should be formed according to the cutting position of the patient. Length Lb
Adjust. Also, the lateral widths d 4 and d 6 and the vertical width of the middle portion of the pin 11
It is preferable to prepare several types of d 3 and d 5 according to the medullary cavity thickness of a patient, which varies depending on sex, age, etc., and to use a size that matches the size of the patient each time. Therefore, the length of the pin 11 may be divided into several types in advance.
次に上記の如く構成された人工骨９の作成手順を説明す
る。まず球部材6,首部材７及びステム部の接続10bを一
体的に形成した骨頭側パート10と、数種類の太さに形成
したピン11を予め用意しておき、患者の骨幹部４の切除
長さに合わせて接続部10bの長さLaを決めて余分な部分
（第１図における鎖線部Ｂ）を切除し、該接続部10bの
底面（切断面）を平滑に仕上げ、残存する骨幹部４切断
面と密接する様に加工する。次いで患者の髄腔径に適合
する太さのピン11を選択すると共に、骨幹部４の残存長
さによって決定されるピン長さLbに基づき、ピン11を適
合する長さに切断する。この切断は凸部11aまたはピン1
1の下端側、即ち髄腔内に挿入される側のどちらに行っ
てもよい。尚ピン11の長さについても幾つかの寸法に分
けて作成・準備しておけばこの切断作業も省略できるこ
とは前にも述べた。次いで必要に応じて該ピン11表面に
バイオガラス等を溶射処理する。そして前記凹部10aに
凸部11aを挿設して次に示す手段により接合する。即ち
両者の接合は溶接々合，冷し嵌め等のいずれの手段を利
用しても良く、引き抜き強度が必要強度（体重の約３倍
程度）を満足する様に接合すれば良い。上記の手順で作
製された人工骨９を手術によって人骨の切除部分と交換
する。Next, a procedure for producing the artificial bone 9 configured as described above will be described. First, a bone head side part 10 integrally formed with a ball member 6, a neck member 7 and a connection 10b of a stem portion and a pin 11 formed with several kinds of thicknesses are prepared in advance, and a resection length of a diaphyseal portion 4 of a patient is prepared. In accordance with this, the length La of the connecting portion 10b is determined, the extra portion (chain line portion B in FIG. 1) is cut off, the bottom surface (cutting surface) of the connecting portion 10b is made smooth, and the remaining diaphyseal portion 4 Process so that it is in close contact with the cut surface. Then, a pin 11 having a thickness matching the diameter of the medullary cavity of the patient is selected, and based on the pin length Lb determined by the remaining length of the diaphyseal portion 4, the pin 11 is cut to a suitable length. This cutting is done by the convex part 11a
It may be performed on either the lower end side of 1, that is, the side to be inserted into the medullary cavity. It should be noted that the cutting work can be omitted if the length of the pin 11 is divided into several dimensions and prepared and prepared. Then, if necessary, the surface of the pin 11 is sprayed with bioglass or the like. Then, the convex portion 11a is inserted into the concave portion 10a and joined by the following means. That is, the two may be joined by any means such as welding, cold fitting, and the like, and the joining may be performed so that the pull-out strength satisfies the required strength (about 3 times the body weight). The artificial bone 9 produced by the above procedure is replaced with the excised portion of the human bone by surgery.
上記の人工骨９は骨頭側パート10及びピン11共にチタン
合金（例えばTi−6Al−4V）によって形成することが好
ましく、球部材６には生体適合性の高いバイオセラミッ
クスを蒸着したものを使用することが推奨される。しか
し本発明は上記チタン合金を用いたものに限られず、ス
テンレス鋼やセラミックス材料を用いたものであっても
構わない。The artificial bone 9 is preferably formed of a titanium alloy (for example, Ti-6Al-4V) for both the femoral head part 10 and the pin 11, and the spherical member 6 is formed by depositing bioceramics having high biocompatibility. Is recommended. However, the present invention is not limited to the one using the above titanium alloy, and may be one using stainless steel or a ceramic material.
上記した様に骨頭側パート10接続部10bはピン11部分を
含まない長さで１次加工しておけば良いので、従前の様
に長いステム部を形成しておく必要はなく、全長が短く
なって取扱性が良いので球部材６や首部材７等の加工が
行ない易く、例えば球部材６の加工においては真円度を
１μｍ以下に仕上げることも容易となった。またピン11
も単体で製造できるので、突条12の加工等は容易にで
き、種々の断面形状のものを作成することが可能になっ
た。As described above, since the bone head side part 10 connection part 10b may be primarily processed to a length that does not include the pin 11 part, it is not necessary to form a long stem part as before, and the total length is short. Since the handleability is good, it is easy to process the ball member 6, the neck member 7 and the like. For example, in processing the ball member 6, it is easy to finish the roundness to 1 μm or less. Also pin 11
Since it can also be manufactured as a single unit, the ridges 12 can be easily processed, and various sectional shapes can be created.
［発明の効果］ 本発明は骨頭側パートと残存骨側パート（挿入ピン）が
別体で構成されるので、患者の長骨切除サイズに合わせ
て短時間で加工でき、しかも寸法精度の高い人工長骨を
作り上げることができる様になった。EFFECTS OF THE INVENTION Since the present invention comprises the femoral head side part and the residual bone side part (insertion pin) as separate bodies, it can be processed in a short time according to the size of the long bone resection of the patient, and the dimensional accuracy is high. You can now build long bones.
第１図は本発明の代表的な実施例を示す正面図、第２図
は第１図の右側面図、第３図、第４図（ａ），（ｂ）は
第１図のIII−III線、IVa−IVa線、IVb−IVb線断面矢視
図、第５図は大腿骨の模式説明図、第６図は人工骨９の
従来例を示す説明図である。 １…大腿骨、２…骨頭 ３…首部、４…骨幹部 ５…骨端部、６…球部 ７…首部材、８…ステム部 ９…人工骨、10…骨頭部側パート 11…ピン、12…突条FIG. 1 is a front view showing a typical embodiment of the present invention, FIG. 2 is a right side view of FIG. 1, and FIGS. 3 and 4 (a) and (b) are III- of FIG. III line, IVa-IVa line, IVb-IVb line sectional arrow view, FIG. 5 is a schematic explanatory view of a femur, and FIG. 6 is an explanatory view showing a conventional example of an artificial bone 9. DESCRIPTION OF SYMBOLS 1 ... Femur, 2 ... Bony head 3 ... Neck part, 4 ... Bone shaft part 5 ... Bone end part, 6 ... Ball part 7 ... Neck member, 8 ... Stem part 9 ... Artificial bone, 10 ... Bone head side part 11 ... Pin, 12 ...
Claims (1)
された患者に装着される人工長骨であって、 骨頭部側の切除部外観に合わせて形成された骨頭部を有
すると共に、下記残存骨側パートとの接合側に凹部を備
えた骨頭側パートと、 患者の残存骨髄腔内への挿入部を有すると共に、上記骨
頭側パートとの接合側に、前記凹部に対応した凸部を備
えた残存骨側パートからなり、 上記骨頭側パートの凹部は、その凹部内の空洞部横断面
形状及び寸法が深さ方向に一定であり、 上記残存骨側パートの凸部は、その突出部分横断面形状
及び寸法が突出方向に一定であり、 上記骨頭側パートの凹部と上記残存骨側パートの凸部を
嵌合させることにより、骨頭側パートと残存骨側パート
が接合される構成であり、 上記骨頭側パートの凹部及び上記残存骨側パートの凸部
は患者の残存骨寸法に合わせて夫々切断可能である様に
構成したものであることを特徴とする人工長骨。1. An artificial long bone to be attached to a patient, which is partially resected from the head of the long bone to the diaphyseal part, and which has a head of the head formed according to the appearance of the resected portion on the head side, and The head part has a recess on the joint side with the residual bone part, and the insertion part into the residual bone marrow cavity of the patient, and the protrusion part corresponding to the recess is provided on the joint side with the bone head part. The recessed portion of the bone head side part is provided with a recessed portion of the bone head side portion, the cavity cross-sectional shape and dimensions in the recessed portion are constant in the depth direction, the protrusion of the remaining bone side part, the protruding portion The cross-sectional shape and dimensions are constant in the projecting direction, and by fitting the concave portion of the femoral head side part and the convex portion of the residual bone side part, the femoral head side part and the residual bone side part are joined together. , The recess of the head side part and the remaining Artificial long bone, wherein the convex portion of the bone-side part are those configured as a respective possible cut to residual bone size of the patient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62182624A JPH07121263B2 (en) | 1987-07-21 | 1987-07-21 | Artificial long bones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62182624A JPH07121263B2 (en) | 1987-07-21 | 1987-07-21 | Artificial long bones |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6425851A JPS6425851A (en) | 1989-01-27 |
| JPH07121263B2 true JPH07121263B2 (en) | 1995-12-25 |
Family
ID=16121543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62182624A Expired - Fee Related JPH07121263B2 (en) | 1987-07-21 | 1987-07-21 | Artificial long bones |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07121263B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2805826A1 (en) | 2013-05-20 | 2014-11-26 | Tonejet Limited | Printhead calibration and printing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2576777B1 (en) * | 1985-01-31 | 1987-03-06 | Rhenter Jean Luc | TOTAL HIP PROSTHESIS WITH PRIMARY FIXING |
-
1987
- 1987-07-21 JP JP62182624A patent/JPH07121263B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6425851A (en) | 1989-01-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |