DE939348C - Mounting device especially for X-ray tubes - Google Patents
Mounting device especially for X-ray tubesInfo
- Publication number
- DE939348C DE939348C DEM11536A DEM0011536A DE939348C DE 939348 C DE939348 C DE 939348C DE M11536 A DEM11536 A DE M11536A DE M0011536 A DEM0011536 A DE M0011536A DE 939348 C DE939348 C DE 939348C
- Authority
- DE
- Germany
- Prior art keywords
- ray tube
- mounting device
- counterweight
- arrangement
- ray tubes
- 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
Links
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 238000002560 therapeutic procedure Methods 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
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
-
- 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
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/447—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being mounted to counterpoise or springs
-
- 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
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
- F16M11/2035—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction
- F16M11/2064—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction for tilting and panning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/2092—Undercarriages with or without wheels comprising means allowing depth adjustment, i.e. forward-backward translation of the head relatively to the undercarriage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/04—Balancing means
- F16M2200/044—Balancing means for balancing rotational movement of the undercarriage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/06—Arms
- F16M2200/063—Parallelogram arms
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Mechanical Engineering (AREA)
- Radiology & Medical Imaging (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- X-Ray Techniques (AREA)
Description
Halterungsvorrichtung insbesondere für Röntgenröhren Die Erfindung bezieht sich auf eine Halterungsvorrichtung für Gegenstände, die leicht von Hand vorzugsweise längs vorgegebener Flächen einstellbar sein sollen.Mounting device, in particular for X-ray tubes The invention refers to a holding device for items that can be easily handled by hand should preferably be adjustable along predetermined areas.
In der medizinischen Röntgentechnik liegt häufig die Aufgabe vor, die an einem Stativ befestigte Röntgenröhre in einer Fläche, die annähernd eine Ebene sein kann, zu bewegen. Eine besondere Bedeutung kommt der leichten Beweglichkeit und Einstellbarkeit in eine gewünschte Lage zu bei Körperhöhlenrohren, also bei Therapie-Röntgenröhren, deren Anode in Körperhöhlen, z. B. den Darm, eingeführt werden kann. Im Interesse der Bequemlichkeit des Bedienenden liegt die Ebene, längs welcher die Röntgenröhre bewegt wird, möglichst weit entfernt von der Stativsäule, und diese liegt nicht in jener Bewegungsebene. In medical X-ray technology, the task is often the X-ray tube attached to a tripod in an area that is approximately one Level can be moving. Easy mobility is of particular importance and adjustability to a desired position for body cavity tubes, i.e. for Therapy X-ray tubes, the anode of which is in body cavities, e.g. B. the intestine, introduced can be. In the interests of operator convenience, the plane is longitudinal which the X-ray tube is moved, as far away as possible from the stand column, and this is not in that plane of movement.
In Fig. 1 ist zum besseren Verständnis eine Halterungsvorrichtung für Körperhöhlenrohre dargestellt, wie sie heute üblich ist. Mit ihr kann die als Stabanodenröhre ausgebildete Röntgenröhre I in der Ebene 2, z. B. entlang der Bahn 3, so bewegt werden, daß der Anodenstab ständig tangential zu dieser Kurve 3 verläuft. Um diese Bewegung zu ermöglichen, ist die Röhre I über ein Drehgelenk 4, einen Querarm 5 und einen Kreuzkopf 6 an der Stativsäule 7 bewegbalr gelagert, und die Anordnung kann in bekannter Weise durch ein innerhalb der Säule 7 laufendes Gegengewicht ausgeglichen sein. Entsprechend den Pfeilen 8 und 11 können in bekannter Weise das Kreuzstück6 um das Stativ 7 und ebenso der Querarm 5 im Kreuzstück gedreht werden. Um die Röhre nun auf der Bahn 3 zu bewegen, müssen gleichzeitig Bewegungen in den eingezeichneten Pfeilrichtungen 8, 9, I0, II und I2 erfolgen. Da jede dieser Bewegungen mit Reibungen behaftet ist, ist es sehr schwierig, eine zügige Bewegung der Röhre 1 entlang der Bahn 3 zu erreichen. Ein weiterer Grund hierfür liegt ferner darin, daß sich die Bewegung der Röhre I entlang der Bahn 3 auf Grund der Konstruktion aus sehr vielen Komponenten zusammensetzt und daß diese Komponenten all verschiedene Konstruktionselemente angreifen. In Fig. 1 is a mounting device for better understanding shown for body cavity tubes, as is common today. With it, the as Rod anode tube formed X-ray tube I in level 2, z. B. along the track 3, are moved so that the anode rod is constantly tangential to this curve 3. To enable this movement, the tube I is via a swivel joint 4, a transverse arm 5 and a cross head 6 movably mounted on the stand column 7, and the arrangement can be compensated in a known manner by a counterweight running within the column 7 be. Corresponding to arrows 8 and 11 can in a known manner the cross piece 6 can be rotated around the stand 7 and also the cross arm 5 in the cross piece. In order to move the tube on track 3, movements must be carried out simultaneously in the indicated arrow directions 8, 9, I0, II and I2. Because each of these movements frictional, it is very difficult to move the tube swiftly 1 along runway 3. Another reason for this is that that the movement of the tube I along the path 3 due to the construction composed of a great many components and that these components are all different Attack construction elements.
Die leichte Einstellbarkeit, z. B. einer Röntgenröhre, kann bei der geschilderten Bewegungsaufgabe durch die Erfindung in konstruktiv einfacher Weise verbessert werden. Dabei sind sowohl die Bewegungsfl»åche der Röntgenröhre als auch ein verschiedenes Verhältnis von Eigengewicht zu Gegengewicht frei wählbar. The easy adjustability, e.g. B. an X-ray tube, can in the described movement task by the invention in a structurally simple manner be improved. Both the movement area of the X-ray tube and a different ratio of dead weight to counterweight can be freely selected.
Gemäß der Erfindung ist zu diesem Zweck bei einer Halterungsvorrichtung insbesondere für Röntgenröhren, die längs einer vorgegebenen Ebene leicht von Hand bewegbar sind, wobei die Röntgenröhre und gegebenenfalls ihr Zubehör, wie z. B. das Hochspannungskabel, durch ein Gegengewicht für sich ausbalanciert sind und die ganze Anordnung in die Bewegungsfläche der Röntgenröhre verlegt und am gemeinsamen Schwerpunkt mit der tragenden Stativsäule verbunden ist, die Röntgenröhre über eine im Systemschwerpunkt vorzugsweise drehbar gelagerte Lenkeranordnung mit zweckmäßig verstellbarem Gegengewicht verbunden. According to the invention is for this purpose in a mounting device especially for X-ray tubes that can easily be manually moved along a given plane are movable, the X-ray tube and possibly its accessories, such as. B. the high-voltage cable, balanced by a counterweight and the whole arrangement in the movement area of the X-ray tube and on the common The center of gravity is connected to the supporting stand column, the X-ray tube via a in the system focus preferably rotatably mounted handlebar arrangement with expedient adjustable counterweight connected.
In der Zeichnung sind in den Fig. 2 und 3 Ausführungsbeispiele für Vorrichtungen nach der Erfindung dargestellt. In the drawing are in Figs. 2 and 3 embodiments for Devices according to the invention shown.
Bei der Beschreibung der Ausführungsbeispiele werden der Einfachheit halber nur die Gewichte der Röhre und ihres Gegengewichtes betrachtet, und die Eigengewichte der notwendigen Verbindungsglieder sind vernachlässigt. Es ist klar, daß bei der praktischen Ausführung die Eigengewichte leicht zu berücksichtigen sind. The description of the exemplary embodiments is made for the sake of simplicity only consider the weights of the tube and its counterweight, and the dead weights the necessary connecting links are neglected. It is clear that the practical execution the dead weights are easy to take into account.
In Fig. 2 ist die Verbindungsgerade zwischen den Schwerpunkten von Röhre I und Gegengewicht 13 die Linie 2I-2I. Der Systemschwerpunkt sei der Punkt 23. In diesem Punkt ist die gesamte Anordnung an eine bekannte Stativanordnung 24 angeschlossen, und zwar derart, daß sie auch noch in Pfeilrichtung 25 bewegbar ist. Die Einstellebene 2 (Fig. 1) ist dann noch innerhalb des Bewegungsbereiches 25 frei wählbar, dabei ist jedoch diese Ebene immer parallel zur Mittellinie der Stativsäule 26. In Fig. 2 is the straight line connecting the centers of gravity of Tube I and counterweight 13 the line 2I-2I. The system focus is the point 23. At this point the entire arrangement is reminiscent of a known tripod arrangement 24 connected in such a way that it can also be moved in the direction of arrow 25. The setting level 2 (FIG. 1) is then still free within the range of motion 25 can be selected, but this plane is always parallel to the center line of the stand column 26th
Das Gelenk an der Stelle 23 kann auch so ausgebildet werden, daß diese letztere Einschränkung noch wegfällt. The joint at the point 23 can also be designed so that this latter restriction does not apply.
Bei der Anordnung nach Fig. 3 ist es möglich, ein verschiedenes Verhältnis von Eigengewicht der Röhre I zu Gegengewicht I3 zu wählen. Es ändern sich dann nur die EebeLarmverhältnis!se, d. th., bei einer solchen Anordnung braucht nicht mit dem Gewichtsverhältnis 1 : 1 gearbeitet zu werden. Die Anordnung ist um die Achse um volle 3600 drehbar und ständig im Gleichgewicht. Ist das Gewichtsverhältnis I-: I, dann verhalten sich die Hebelarme 27 und 28 wie 1 : I. Wählt man 27 abweichend von 2s, dann verhalten sich die Gewichte umgekehrt wie die zugehörigen Hebelarme. In the arrangement of FIG. 3 it is possible to have a different ratio to choose from the dead weight of the tube I to the counterweight I3. It just changes the living conditions, d. th., with such an arrangement does not need with the weight ratio 1: 1 to be worked. The arrangement is around the axis Can be rotated a full 3600 and is always in balance. Is the weight ratio I-: I, then the lever arms 27 and 28 behave like 1: I. If 27 is selected differently of 2s, then the weights behave in reverse as the corresponding lever arms.
Fig. 3 zeigt die Lenkeranordnung der Fig. 2 im Prinzip. Fig. 3 shows the handlebar arrangement of Fig. 2 in principle.
Bei den bisherigen Betrachtungen wurde die Wirkung des zur Röntgenröhre führenden Hochspannungskabels vernachlässigt. Bei dem gegebenen Verhältnis zwischen Kabelgewicht und Röhrengewicht wird an den gegebenen oben beschriebenen Prinzipien der Halterungsvorrichtung nichts geändert, es tritt nur eine Unsymmetriekomponente hinzu, die zum Teil durch die Wahl des Lagerungspunktes 23 ausgeglichen werden kann, zum Teil wirken auch die Reibungen in der gesamten Anordnung kompens,ierend, und notfalls. kann man auch diese Reibung an gewissen Stellen auf eine - gewünschte Höhe bringen. In the previous considerations, the effect of the became an X-ray tube leading high voltage cable neglected. Given the relationship between Cable weight and tube weight is given according to the principles described above the mounting device has not changed anything, only an asymmetry component occurs added, which can be partially offset by the choice of storage point 23, In some cases, the frictions also have a compensating, and compensating effect in the entire arrangement if necessary. you can also adjust this friction at certain points to a - desired Bring height.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM11536A DE939348C (en) | 1951-11-03 | 1951-11-03 | Mounting device especially for X-ray tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM11536A DE939348C (en) | 1951-11-03 | 1951-11-03 | Mounting device especially for X-ray tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE939348C true DE939348C (en) | 1956-02-23 |
Family
ID=7295614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM11536A Expired DE939348C (en) | 1951-11-03 | 1951-11-03 | Mounting device especially for X-ray tubes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE939348C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2320723A1 (en) * | 1975-08-13 | 1977-03-11 | Philips Nv | RADIOLOGICAL DEVICE EQUIPPED WITH A SOURCE OF BALANCED X-RAYS THAT CAN BE MOVED IN A PLAN |
DE3007105A1 (en) * | 1979-02-28 | 1980-09-11 | Philips Nv | CARRYING DEVICE WITH WEIGHT COMPENSATION |
EP0251487A2 (en) * | 1986-06-24 | 1988-01-07 | Picker International, Inc. | X-ray systems |
EP0399324A2 (en) * | 1989-05-23 | 1990-11-28 | Picker International Gmbh | Apparatus for angiography |
EP0415176A1 (en) * | 1989-08-25 | 1991-03-06 | Siemens-Elema AB | Balancing device |
NL9401448A (en) * | 1994-09-06 | 1996-04-01 | Egripment B V | Camera dolly with improved balance |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT136775B (en) * | 1930-08-08 | 1934-03-10 | Siemens Reiniger Veifa | High-voltage protected X-ray machine. |
DE666775C (en) * | 1932-11-08 | 1938-10-28 | Ernst Pohl | X-ray tripod with swiveling boom |
-
1951
- 1951-11-03 DE DEM11536A patent/DE939348C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT136775B (en) * | 1930-08-08 | 1934-03-10 | Siemens Reiniger Veifa | High-voltage protected X-ray machine. |
DE666775C (en) * | 1932-11-08 | 1938-10-28 | Ernst Pohl | X-ray tripod with swiveling boom |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2320723A1 (en) * | 1975-08-13 | 1977-03-11 | Philips Nv | RADIOLOGICAL DEVICE EQUIPPED WITH A SOURCE OF BALANCED X-RAYS THAT CAN BE MOVED IN A PLAN |
DE3007105A1 (en) * | 1979-02-28 | 1980-09-11 | Philips Nv | CARRYING DEVICE WITH WEIGHT COMPENSATION |
EP0251487A2 (en) * | 1986-06-24 | 1988-01-07 | Picker International, Inc. | X-ray systems |
EP0251487A3 (en) * | 1986-06-24 | 1988-11-23 | Picker International, Inc. | X-ray systems |
EP0399324A2 (en) * | 1989-05-23 | 1990-11-28 | Picker International Gmbh | Apparatus for angiography |
EP0399324A3 (en) * | 1989-05-23 | 1991-03-13 | Picker International Gmbh | Apparatus for angiography |
EP0415176A1 (en) * | 1989-08-25 | 1991-03-06 | Siemens-Elema AB | Balancing device |
US5143333A (en) * | 1989-08-25 | 1992-09-01 | Siemens Aktiengesellschaft | Weight counterbalance means |
NL9401448A (en) * | 1994-09-06 | 1996-04-01 | Egripment B V | Camera dolly with improved balance |
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