JPH1199151A - Patient lying device - Google Patents
Patient lying deviceInfo
- Publication number
- JPH1199151A JPH1199151A JP10205420A JP20542098A JPH1199151A JP H1199151 A JPH1199151 A JP H1199151A JP 10205420 A JP10205420 A JP 10205420A JP 20542098 A JP20542098 A JP 20542098A JP H1199151 A JPH1199151 A JP H1199151A
- Authority
- JP
- Japan
- Prior art keywords
- patient
- fibers
- organic polymer
- linear organic
- fiber
- 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.)
- Withdrawn
Links
- 239000000835 fiber Substances 0.000 claims abstract description 20
- 229920000620 organic polymer Polymers 0.000 claims abstract description 14
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 9
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 8
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 5
- 239000004753 textile Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000002759 woven fabric Substances 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 abstract description 8
- 238000003325 tomography Methods 0.000 abstract description 6
- 239000004760 aramid Substances 0.000 abstract description 3
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000009787 hand lay-up Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000090 poly(aryl ether) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
- A61B6/0442—Supports, e.g. tables or beds, for the body or parts of the body made of non-metallic materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- Radiology & Medical Imaging (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Optics & Photonics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は少なくとも一つの横
臥板を有している患者横臥装置に関する。The present invention relates to a patient lying device having at least one lying plate.
【０００２】[0002]
【従来の技術】この種の患者横臥装置は例えば患者を医
学的診断中に横臥するために用いられる。例えば頭蓋あ
るいは脊柱の損傷の複雑な臨床的問質のために、場合に
よっては患者をＸ線並びに磁気共鳴断層撮影法で診断す
る必要がある。2. Description of the Prior Art Patient recumbent devices of this kind are used, for example, to lay a patient during a medical diagnosis. Due to the complex clinical nature of, for example, skull or spine injury, it is sometimes necessary to diagnose patients with x-rays and magnetic resonance tomography.
【０００３】Ｘ線診断に利用される患者横臥装置はアル
ミニウムあるいは炭素繊維強化プラスチックのような良
導電性材料から成っている。しかしこの患者横臥装置は
磁気共鳴式診断には、高周波域のシェーデイング（陰影
化）および勾配電流によるうず電流損失のために適して
いない。従って磁気共鳴断層撮影に対しては、横臥板が
木材あるいはガラス繊維強化プラスチックで作られてい
る患者横臥装置が使用されている。しかしこれらの両物
質はＸ線透視の際に患者の長手方向において強い地合を
表すことになる。これは画質を不十分にしてしまうの
で、できるならばＸ線式診断の前に患者の横臥台の交換
が行われる。The patient recumbent device used for X-ray diagnostics is made of a highly conductive material such as aluminum or carbon fiber reinforced plastic. However, this patient recumbent device is not suitable for magnetic resonance diagnosis due to shading at high frequencies and eddy current losses due to gradient currents. Therefore, for magnetic resonance tomography, a patient recumbent device in which the reclining plate is made of wood or glass fiber reinforced plastic is used. However, both of these substances will exhibit a strong formation in the longitudinal direction of the patient during fluoroscopy. This leads to poor image quality, so the patient's recumbent is replaced if possible before the X-ray diagnosis.
【０００４】Ｘ線診断に適した患者横臥装置は例えばド
イツ特許出願公開第４４１６２０２号明細書および同第
３０３１８４１号明細書で知られている。[0004] Patient lying devices suitable for X-ray diagnostics are known, for example, from DE-A-44 16 202 and DE-A 30 318 41.
【０００５】ドイツ特許出願公開第４４１６２０２号明
細書で知られている患者横臥装置は台枠と横臥板を有し
ている。横臥板は患者横臥装置の特別な形態に基づいて
台枠の取付け板上に配置されている。この取付け板はマ
ットとして形成され、例えばポリウレタンあるいはポリ
エチレンで構成される。ドイツ特許出願公開第４４１６
２０２号明細書に記載の患者横臥装置はコンピュータ断
層撮影にも使用することができる。[0005] A patient recumbent device known from DE-A 44 16 202 A1 has an underframe and a reclining plate. The reclining plate is arranged on the mounting plate of the underframe according to a special configuration of the patient reclining device. The mounting plate is formed as a mat and is made of, for example, polyurethane or polyethylene. DE-A-4416
The patient recumbent device described in document 202 can also be used for computed tomography.
【０００６】ドイツ特許出願公開第３０３１８４１号明
細書に記載されている患者横臥装置は手術台として使用
され、種々の位置に置くことができる横臥板を有してい
る。この横臥板は両側にそれぞれ位置するアルミニウム
製の２つの台枠部分とこれらの両台枠部分間に配置され
た発泡プラスチック芯から成っている。この発泡プラス
チック芯はその表面および裏面にそれぞれ炭素繊維ある
いは合成有機繊維を持つ複合材から成っている被覆層を
有している。発泡プラスチック芯および表裏の被覆層
は、側面の台枠部分が一体化されているサンドイッチ板
を形成する。このサンドイッチ構造によって一方では高
い強度および形状安定性が達成され、他方ではＸ線に対
する適格性が改善される。[0006] The patient lying device described in DE 3031841 is used as an operating table and has a lying plate which can be placed in various positions. The reclining board comprises two aluminum frame portions located on both sides, respectively, and a foamed plastic core disposed between the two frame portions. The foamed plastic core has a covering layer made of a composite material having carbon fibers or synthetic organic fibers on its front and back surfaces, respectively. The foamed plastic core and the front and back cover layers form a sandwich plate in which the side frame portions are integrated. This sandwich structure achieves high strength and shape stability on the one hand and improves X-ray qualification on the other hand.
【０００７】[0007]
【発明が解決しようとする課題】本発明の課題は、Ｘ線
診断並びに磁気共鳴式診断の際に必要な画像を最良の質
にできるような患者横臥装置を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a patient recumbent device which can obtain the best quality images required for X-ray diagnosis and magnetic resonance diagnosis.
【０００８】[0008]
【課題を解決するための手段】本発明によればこの課題
は特許請求の範囲の請求項１に記載の手段によって解決
される。本発明の有利な実施態様は従属請求項に記載さ
れている。According to the invention, this object is achieved by the measures according to claim 1. Advantageous embodiments of the invention are described in the dependent claims.
【０００９】特許請求の範囲の請求項１に記載の患者横
臥装置は、充填材として線状有機重合体製の繊維を含ん
でいる繊維強化プラスチックから成っている少なくとも
一つの横臥板を有している。[0009] The patient recumbent device according to claim 1 has at least one recumbent plate made of fiber reinforced plastic containing fibers of linear organic polymer as filler. I have.
【００１０】線状有機重合体で作られた繊維は電気絶縁
特性を有するので、磁気共鳴断層撮影に適している。同
時にこの繊維は、これを包囲するプラスチック母材と同
じ重原子濃度従って同じＸ線吸収特性を有している。こ
れによって線状有機重合体から成る繊維はＸ線画像には
映らない。従って本発明に基づく患者横臥装置によれ
ば、Ｘ線並びに磁気共鳴式診断の際に同じ良好な画質を
得ることができる。[0010] Fibers made of linear organic polymers have electrical insulating properties and are suitable for magnetic resonance tomography. At the same time, the fiber has the same heavy atom concentration and therefore the same X-ray absorption properties as the surrounding plastic matrix. As a result, the fiber composed of the linear organic polymer does not appear in the X-ray image. Therefore, according to the patient lying apparatus according to the present invention, the same good image quality can be obtained in X-ray and magnetic resonance diagnosis.
【００１１】一般的に横臥板が充填材として線状有機重
合体から成る繊維を持った繊維強化プラスチックから成
っているだけで十分である。しかし特別な用途に対して
は本発明の枠内で全く同様に、横臥板がその上に配置さ
れる架台をこの繊維強化プラスチックで作ることもでき
る。In general, it is sufficient for the recumbent plate to consist of fiber-reinforced plastic with fibers of linear organic polymer as filler. However, for special applications, just as within the framework of the invention, the frame on which the reclining plate is arranged can be made of this fiber-reinforced plastic.
【００１２】極めて大きな強度および剛性が望まれるか
要求される用途に対しては、充填材としてアラミド繊維
を使用することができる。For applications where very high strength and rigidity are desired or required, aramid fibers can be used as filler.
【００１３】線状有機重合体から成る繊維はＸ線画像に
映らないので、本発明に基づく患者横臥装置ないしその
患者横臥板を製造するために、強化プラスチックに対し
て例えばハンドレイアップ、引抜き成形、プレスのよう
なそれ自体公知の加工方法が有利に利用される。更にそ
れを製造するために、考え得るあらゆる配列、繊維長、
配向ないし不規則性のあらゆる公知の繊維製品、例えば
粗紡糸、撚り糸、織物、フリースが利用される。プラス
チック母体に対して、熱硬化性注型樹脂例えばエポキシ
樹脂、不飽和ポリエステル、ビニルエステル樹脂および
例えばポリスルホン、ポリアリールエーテル、ポリエー
テルエーテルケトンのような適当な熱可塑性プラスチッ
クが利用される。熱硬化性注型樹脂は好適には、核スピ
ン診断装置におけるコイル品質を減少させないために、
ｔａｎδ＜０．０１の誘電損率を有していなければなら
ない。Since fibers made of linear organic polymers are not visible on X-ray images, for example, hand lay-up, pultrusion, etc. can be carried out on reinforced plastics in order to produce a patient lying device or a patient lying plate according to the invention. Processing methods known per se, such as pressing, are advantageously used. In order to further manufacture it, every possible arrangement, fiber length,
All known textile products of orientation or irregularity, such as rovings, twists, fabrics and fleece are used. For the plastic matrix, thermosetting casting resins such as epoxy resins, unsaturated polyesters, vinyl ester resins and suitable thermoplastics such as polysulfones, polyarylethers, polyetheretherketones are used. The thermosetting casting resin is preferably not to reduce the coil quality in nuclear spin diagnostics,
It must have a dielectric loss factor of tan δ <0.01.
【００１４】例えば横臥板を冷間圧縮方法で製造するた
めに、まず精確な寸法の横臥板の原型からエポキシ樹脂
成形型が作り出される。開かれた成形型の中に１５層の
アラミド繊維織物が敷きつめられ、バリがきれいに切り
取られる。続いて反応剤即ち冷間圧縮において活性のエ
ポキシ樹脂が注ぎ込まれ、成形型が閉じられ、１０バー
ルまでの圧力で圧縮される。エポキシ樹脂の硬化後に成
形型から横臥板が取り出され、必要に応じて塗料が施さ
れる。それ以上の追加加工は、エポキシ樹脂成形型の性
質上不要である。For example, in order to manufacture a reclining plate by a cold compression method, an epoxy resin mold is first produced from a precise reclining plate prototype. Fifteen layers of aramid fiber fabric are laid in the opened mold, and burrs are cut off neatly. The reactant, ie the epoxy resin active in the cold compaction, is then poured, the mold is closed and compacted at a pressure of up to 10 bar. After the epoxy resin is cured, the reclining board is taken out of the mold, and a paint is applied as necessary. Further additional processing is unnecessary due to the properties of the epoxy resin mold.
【００１５】[0015]
【発明の実施の形態】以下図面に概略的に示した実施例
を参照して本発明および他の請求項に記載の有利な実施
の形態を詳細に説明する。BRIEF DESCRIPTION OF THE DRAWINGS The invention and the advantageous embodiments described in the further claims are explained in detail below with reference to an embodiment schematically shown in the drawings.
【００１６】図１には診察対象（患者２）に対する横臥
板１を有している患者横臥装置が示されている。横臥板
１は本発明により充填材として線状有機重合体、好適に
はアラミド繊維から成る繊維を含んでいる繊維強化プラ
スチックから成っている。FIG. 1 shows a patient lying apparatus having a lying plate 1 for an object to be examined (patient 2). The recumbent plate 1 according to the invention consists of a fiber-reinforced plastic which contains fibers of a linear organic polymer, preferably aramid fibers, as filler.
【００１７】線状有機重合体で作られた繊維は、電気絶
縁特性を有するので、磁気共鳴断層撮影に適している。
更にこの繊維は、これを包囲するプラスチック母体と同
じ重原子濃度従って同じＸ線吸収特性を有している。こ
れによって線状有機重合体から成る繊維はＸ線画像には
映らない。本発明に基づく患者横臥装置上に横臥された
患者２は従って移し換える必要なしにすべてのＸ線並び
に磁気共鳴断層撮影で診断できる。Fibers made of linear organic polymers are suitable for magnetic resonance tomography because of their electrically insulating properties.
Furthermore, the fiber has the same heavy atom concentration and therefore the same X-ray absorption properties as the plastic matrix surrounding it. As a result, the fiber composed of the linear organic polymer does not appear in the X-ray image. The patient 2 lying on the patient lying device according to the invention can thus be diagnosed without any transfer by all X-rays and magnetic resonance tomography.
【００１８】図示の実施例において横臥板１は、二対の
車輪４、５を介して床６の上に支持されている架台３上
に配置されている。In the embodiment shown, the reclining board 1 is arranged on a gantry 3 supported on a floor 6 via two pairs of wheels 4,5.
【００１９】しかし本発明は横臥板１が走行車台上に配
置されている図示の実施例に限定されない。むしろ本発
明に基づく患者横臥装置において架台３は支持構造物と
してあるいはテーブル台としても形成できる。本発明の
枠内において、患者横臥装置は搬送用の保持把手だけを
有し、対応した架台上に載せられるか相応した保持部材
にはめ込まれる横臥板１だけを有するようにしてもよ
い。However, the invention is not limited to the embodiment shown in which the reclining plate 1 is arranged on a traveling chassis. Rather, in the patient recumbent device according to the invention, the cradle 3 can also be formed as a support structure or as a table table. Within the framework of the invention, the patient recumbent device may have only a holding handle for transport, and may only have a reclining plate 1 which is mounted on a corresponding cradle or fitted on a corresponding holding member.
【図１】本発明に基づく患者横臥装置の側面図。FIG. 1 is a side view of a patient recumbent device according to the present invention.
１ 横臥板 ２ 患者 ３ 架台 ４ 車輪 ５ 車輪 ６ 床 DESCRIPTION OF SYMBOLS 1 Recumbent board 2 Patient 3 Stand 4 Wheel 5 Wheel 6 Floor
フロントページの続き (72)発明者 ラルフ マイスナー ドイツ連邦共和国 91052 エルランゲン パウル−ゴッセン−シュトラーセ 34Continued on the front page (72) Inventor Ralph Meisner Germany 91052 Erlangen Paul-Gossen-Strase 34
Claims (9)
含んでいる繊維強化プラスチックから成っている少なく
とも一つの横臥板（１）を有していることを特徴とする
患者横臥装置。1. A patient recumbent device comprising at least one recumbent plate (1) made of fiber-reinforced plastic containing, as a filler, fibers of a linear organic polymer.
を持った繊維強化プラスチックから成っている架台
（３）上に配置されていることを特徴とする請求項１記
載の患者横臥装置。2. The patient according to claim 1, wherein the recumbent plate (1) is arranged on a gantry (3) made of fiber-reinforced plastic with fibers of a linear organic polymer. Recumbent device.
ラミド繊維を含んでいることを特徴とする請求項１又は
２記載の患者横臥装置。3. The patient recumbent device according to claim 1, wherein the fiber-reinforced plastic contains aramid fiber as a filler.
ことを特徴とする請求項１又は２記載の患者横臥装置。4. The patient recumbent device according to claim 1, wherein the textile product is formed as a roving.
ことを特徴とする請求項１又は２記載の患者横臥装置。5. The patient recumbent device according to claim 1, wherein the textile product is formed as a twisted yarn.
とを特徴とする請求項１又は２記載の患者横臥装置。6. The patient recumbent device according to claim 1, wherein the textile product is formed as a woven fabric.
ることを特徴とする請求項１又は２記載の患者横臥装
置。7. The patient recumbent device according to claim 1, wherein the textile product is formed as a fleece.
用いられることを特徴とする請求項１又は２記載の患者
横臥装置。8. The patient recumbent device according to claim 1, wherein a thermosetting casting resin is used as the plastic.
クが用いられることを特徴とする請求項１又は２記載の
患者横臥装置。9. The patient recumbent device according to claim 1, wherein a thermoplastic is used as the plastic.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19731234A DE19731234A1 (en) | 1997-07-21 | 1997-07-21 | Laying surface for prone patient on trolley |
| DE19731234.9 | 1997-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1199151A true JPH1199151A (en) | 1999-04-13 |
Family
ID=7836377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10205420A Withdrawn JPH1199151A (en) | 1997-07-21 | 1998-07-21 | Patient lying device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH1199151A (en) |
| DE (1) | DE19731234A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10340552B4 (en) * | 2003-09-01 | 2015-10-15 | Siemens Aktiengesellschaft | patient support |
| DE102009023806B4 (en) | 2008-07-09 | 2011-04-28 | Siemens Aktiengesellschaft | Combined PET-MR device, component and local coil |
| DE102009009838A1 (en) * | 2008-12-22 | 2010-06-24 | Siemens Aktiengesellschaft | Support for patient receiving table in computer tomography device, has side parts arranged at base part in longitudinal direction of side parts, where base and side parts are made of completely transparent material against X-ray radiation |
| DE102009051048A1 (en) | 2009-10-27 | 2011-04-28 | Schmuhl Faserverbundtechnik Gmbh & Co. Kg | patient support |
| CN113288614A (en) * | 2021-05-27 | 2021-08-24 | 江西省人民医院 | Breathe internal medicine with doctorsing and nurses automatic isolating device of sick bed of patrolling and examining |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3031841A1 (en) * | 1979-08-29 | 1981-03-19 | Fothergill & Harvey Ltd., Littleborough, Lancashire | OPERATING TABLE |
| DE4416202C2 (en) * | 1994-05-06 | 2003-08-21 | Siemens Ag | Patient positioning device and use of the same |
-
1997
- 1997-07-21 DE DE19731234A patent/DE19731234A1/en not_active Withdrawn
-
1998
- 1998-07-21 JP JP10205420A patent/JPH1199151A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE19731234A1 (en) | 1999-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20051004 |