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Publication numberUS3609355 A
Publication typeGrant
Publication dateSep 28, 1971
Filing dateMay 12, 1969
Priority dateMay 31, 1968
Publication numberUS 3609355 A, US 3609355A, US-A-3609355, US3609355 A, US3609355A
InventorsKurt Schwarzer
Original AssigneeSchick X Ray Co Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
X-ray mammograph in which the x-ray source and film cassette are rotatable about the subject being photograph
US 3609355 A
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Description  (OCR text may contain errors)

United States Patent Inventor Kurt Schwarzer Spardorf Uber Erlangen, Germany Appl. No. 823,845 Filed May 12, 1969 Patented Sept. 28, 1971 Assignee Schick X-Ray Co., Inc.

Wilmette, Ill. Priority May 31, 1968 Germany H 62 892 X-RAY MAMMOGRAPH IN WHICH THE X-RAY SOURCE AND FILM CASSETTE ARE ROTATABLE ABOUT THE SUBJECT BEING PHOTOGRAPH 6 Claims, 2 Drawing Figs.

US. Cl 250/50, 250/65, 250/92 Int. Cl G03b 41/16 Field of Search 250/50, 9l, 6 l .5, 65

References Cited UNITED STATES PATENTS 3,222,518 l2/l965 Nagel 250/54 1/1968 Strax 250/50 OTHER REFERENCES Planigraphy," J. Robert Andrews, The American Journal of Roentgenology and Radium Therapy, Vol. 36 No. 5, Nov. 1936, class 250/6l.5

Primary Examiner-Archie R. Borchelt Assistant Examiner-C. E. Church Attorney-Burmeister, Palmatier & Hamby ABSTRACT: The X-ray apparatus is especially welladapted for taking mammograms; that is, X-ray pictures of the female breast. A single upright supporting column and a patient chair are mounted on a platform. The column supports a counterbalanced vertically movable member which in turn supports a horizontally movable arm. A head is adjustably rotatable about the horizontal axis of the arm. An X-ray source and a cassette carrier are mounted on opposite portions of the head. The arm is movable horizontally toward and away from the front of the chair, which is movable horizontally along the platform at right angles to the movement of the arm. The X- ray source is preferably movable along the head, toward and away from the cassette carrier for making mammograms in which the breast is compressed. A control console is preferably mounted on the platform and is screened from the X-ray source by a protective wall.

PATENTED SEP28 IQYI sum 2 OF 2 X-RAY MAMMOGRAPH IN WHICH THE X-RAY SOURCE AND FILM CASSETTE ARE ROTATABLE ABOUT THE SUBJECT BEING PHOTOGRAPH The present invention relates to apparatus for taking X-ray pictures, particularly mammograms; that is, X-rays of the female breast.

X-ray photography of the female breast constitutes one branch of the broader field relating to diagnostic X-ray photography of soft tissues, but the preparation of X-ray pictures of the female breast is very difiicult, particularly in that the correct adjustment and focusing of the apparatus is rather complicated. in the prior art, it was the general practice to prepare mammograms by utilizing the available standard X- ray installations, while equipping such installations with auxiliary devices. While it was possible to obtain satisfactory results in this way, there were various drawbacks and disadvantages. For example, the female patient rarely remained in the desired standard position during the preparation of the mammogram. Moreover, the problems of focusing and adjustment were so difficult that the quality of the results was variable and rather unpredictable.

Thus, the desire arose to provide a special X-ray machine which would satisfy the demands of the physicians for easy and accurate focusing and adjustment of the machine during X-ray photography of the female breast.

It is the principal object of the present invention to provide such a machine.

Because X-ray departments must operate profitably, it is a further object to provide such an X-ray apparatus which can also be used for taking other types of X-ray pictures, in connection with depth diaphragms and scanning tables.

The present invention provides a new X-ray apparatus or instrument whereby a physician can prepare a mammogram with great ease and precision. Such apparatus preferably comprises a single supporting column which stands upright on a horizontal platform or base. A patients chair is also mounted on the platform. A counterbalanced member is adjustable vertically along the supporting column and is fitted with a supporting arm, movable horizontally toward and away from the patients chair. The supporting arm carries a head or turret which is adjustably rotatable about the longitudinal axis of the arm. An X-raysource and a cassette carrier are mounted on opposite portions of the rotary head. The chair is movable horizontally along the platform, at right angles to the movement of the supporting arm.

In accordance with additional features of the present invention, it is preferred to mount the X-ray source on the head for adjusting movement, toward and away from the cassette carrier, to facilitate the production of X-ray photographs in which the breast is compressed. The'X-ray source usually comprises an X-ray tube within a protective housing. The range of movement may be about 12 to 14 centimeters. In order to facilitate this adjustment, the X-ray source is preferably counterbalanced by a counterpoise within the rotary head. This arrangement is especially advantageous when the adjustment has to be done manually. However, the invention preferably provides a motor for moving the X-ray source along the head. A safety device is preferably employed to limit the compressive pressure. For easier operation, it is preferred that the motions of the X-ray source be magnetically braked.

In order that the apparatus may be used to the fullest extent, the X-ray source is preferably arranged to be tilted around its bearing trunnions by 90 or oven as much as 180". In this way, the breast of a patient lying on her back can be subjected to mammography, using a compression tube.

For preparing X-ray pictures of other parts of the body, the special breast tube is replaced by a depth diaphragm with a light visor.

It is preferred to mount the control console, incorporating the high voltage power supply for the X-ray tube, on the same platform which supports the single column and the patients chair. For the protection of the operator, a wall or screen to absorb X-rays is preferably positioned on the platform between the control console and the X-ray source. Further objects, advantages and features of the present invention will appear from the following description, taken with the accompanying drawings, in which;

FIG. 1 is a perspective view showing an X-ray apparatus or machine to be described as an illustrative embodiment of the present invention; and

FIG. 2 is a view similar to FIG. 1 but showing certain parts of the machine in changed positions. FIG. 1 shows an apparatus or machine, according to the present invention, for taking axial X-ray pictures of the female breast. The apparatus comprises a platform 1, serving as a serving as a base for a single supporting column 2, with a vertically adjustable crossslide or supporting member 3 thereon. A supporting arm 4 is movably mounted on the cross-slide 3 so that the arm may be shifted horizontally in the direction of the chair 5 for the patient. The supporting arm 4 carries a shaft or pivot 6, about which a rotary head or turret 7 may be tilted. One side of the rotary head 7 is fitted with a cassette carrier 8, including a counterpoise. The other side of the head 7 carries the X-ray source 9, comprising a protective housing in which the X-ray tube is mounted. The X-rays leave the source at an exit [0, underneath which an unsymmetrical breast tube 11 is attached, if mammograms are to be prepared. However, if ordinary routine X-ray pictures are to be taken, the exit 10 is fitted with a depth diaphragm having a light visor.

The chair 5 is movable laterally along the platform and may be locked in any desired position by a brake 12. The platform 1 is preferably fitted with rollers for easy movement, but may be locked against movement along the floor by operating a setscrew l3.

FIG. 2 shows the manner is which the machine is adjusted for taking lateral pictures of the right breast. The chair 5 is moved laterally to one side of the platform 1. The rotatable head 7 is turned so that the X-ray source 9 and the cassette carrier 8 are along a horizontal line.

If it is desired to obtain X-ray pictures of the left breast, the patients chair 5 is moved along the platform 1 to the opposite end of the guide slot 14. Moreover, the rotary head 7 is turned through 180 to reverse the positions of the X-ray source 9 and the cassette carrier 8. The rotary head 7 is provided with a stop lever 15 which may be operated to insure accurate positioning of the head in the vertical position of FIG. I, for making axial mammograms; the horizontal position of FIG. 2, for making lateral mammograms of the right breast; and the reversed horizontal position, for making lateral mammograms of the left breast.

As shown in FlG. the rotary head 7 is equipped with a motor 16 for shifting the X-ray source 9 toward and away from the cassette carrier 8 so that the breast may be compressed. lt is preferred to counterbalance the X-ray source 9 by providing a counterpoise within the head 7, in which case the head is made large enough to accommodate the counterpoise. The counterpoise is especially advantageous when the X-ray source 9 is adjusted manually. However, the counterpoise is also preferably provided in connection with the drive motor 16, together with a safety device to limit the compressive pressure.

A counterpoise is also preferably provided within the column 2, to counterbalance the weight of the cross slide 3 and the components mounted thereon, including the arm 4, rotary head 7, cassette carrier 8, and X-ray source 9.

The chair 5 is preferably arranged to be removable from the platform 1, so that the machine can be used in connection with a table on which the patient is supported. For taking X- ray pictures in this way, the usual screen or grid may be employed.

If X-ray pictures are to be taken with the use of a scanning screen, the X-ray source 9 may be turned about its supporting trunnions, through to the right or to the left. The breast tube II is replaced by a depth diaphragm with a light visor (not shown).

As shown in FlG. l, the machine includes a control console 18, preferably mounted on the platform 1. The console 18 ineludes the high voltage power supply for operating the X ray tube. A wall or screen 17 is mounted on the platfonn 1 between the control console 18 and the X-ray source 9, to absorb X-rays so as to protect the operator. In FIGS. 1 and 2, the wall 17 has been shown with portions broken away for the sake of clarity.

lclaim:

1. Apparatus for taking X-ray pictures of the female breast,

said apparatus comprising a platfonn,

a single supporting column mounted on said platform and projecting upwardly therefrom,

a counterbalanced mounting member mounted on said column and movable vertically therealong,

a supporting arm,

means mounting said supporting am on said mounting member for horizontal movement relative thereto,

a supporting head mounted on said supporting arm for rotary adjustment about a horizontal axis,

an X-ray source mounted on one portion of said head,

a cassette carrier mounted opposite said X-ray source on said head, and substantially perpendicular to the axis of said X-ray source,

a patient-supporting chair projecting upwardly from said platform,

said supporting arm being movable parallel to said horizontal axis and toward and away from the front of said chair,

means mounting said chair on said platform for horizontal movement at right angles to the movement of said supporting arm,

and means mounting said X-ray source on said head for limited movement toward and away from said cassette carrier for taking X-ray pictures in which the breast is under compression between said X-ray source and said cassette carrier said X-ray source and said cassette carrier being rotatable with said head, but being fixed in angular positions relative to said head,

the rotary adjustability of said head making it possible to compress the breast in any desired direction between said X-ray source and said cassette carrier.

2. Apparatus according to claim I in which said head contains means for counter balancing said X-ray source.

3. Apparatus according to claim 1 including a motor for adjusting the position of said X-ray source.

4. Apparatus according to claim 3,

including magnetic braking means for stopping the movement of said X-ray source.

5. Apparatus according to claim 1,

including a control console mounted on said platform for controlling the operation and movement of the X-ray source.

6. Apparatus according to claim 5,

including a protective wall mounted on said platform between said control console and the X-ray source to screen the operator against radiation.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3824397 *May 3, 1972Jul 16, 1974Philips CorpDevice for x-ray photography, in particular for mammography
US3848133 *Feb 12, 1973Nov 12, 1974Agfa Gevaert NvRoll film radiographic cassette
US3991316 *Nov 2, 1973Nov 9, 1976Siemens AktiengesellschaftApparatus for X-ray examination
US4090084 *Feb 24, 1977May 16, 1978Epstein Heywood YMammography compression apparatus
US4251731 *Dec 19, 1978Feb 17, 1981Agfa-Gevaert, A.G.Arrangement for holding X-ray film vacuum cassettes
US4298801 *Jan 17, 1980Nov 3, 1981General Electric CompanyL-U Arm handle assembly
US4658409 *Oct 29, 1984Apr 14, 1987Siemens AktiengesellschaftCompression device for an X-ray diagnostic apparatus
US4721856 *Oct 29, 1985Jan 26, 1988Fuji Photo Film Co., Ltd.Mammographic radiation image recording and read-out apparatus
US4866752 *Oct 13, 1988Sep 12, 1989Siemens AktiengesellschaftX-ray examination apparatus comprising a pillar carrying an X-ray system
US4910756 *Jan 10, 1989Mar 20, 1990Orion - Yhtyma OyMammography
US5050197 *May 4, 1989Sep 17, 1991Automed OyMammographic methods and apparatuses
US5289520 *Oct 6, 1992Feb 22, 1994Lorad CorporationStereotactic mammography imaging system with prone position examination table and CCD camera
US5386447 *Sep 23, 1992Jan 31, 1995Fischer Imaging CorporationMammographic screening and biopsy apparatus
US5415169 *Feb 17, 1993May 16, 1995Fischer Imaging CorporationMotorized mammographic biopsy apparatus
US5426685 *Jan 24, 1994Jun 20, 1995Thermotrex CorporationStereotactic mammography system imaging
US5594769 *May 9, 1995Jan 14, 1997Thermotrex CorporationMethod and apparatus for obtaining stereotactic mammographic guided needle breast biopsies
US5609152 *Feb 15, 1995Mar 11, 1997Thermotrex CorporationProne position stereotactic mammography needle biopsy apparatus and method for using the same
US5735264 *Jun 7, 1995Apr 7, 1998Fischer Imaging CorporationApparatus for performing medical procedures on a breast
US5803912 *Apr 25, 1995Sep 8, 1998Fischer Imaging CorporationPositioning function mammographic biopsy function system with offset
US5820552 *Jul 12, 1996Oct 13, 1998United States Surgical CorporationStand for conducting an examination of breast tissue
US5833627 *Jul 12, 1996Nov 10, 1998United States Surgical CorporationImage-guided biopsy apparatus and methods of use
US5938613 *Apr 11, 1997Aug 17, 1999United States Surgical CorporationMethods and apparatus for performing sonomammography and enhanced X-ray imaging
US5983123 *Jun 18, 1998Nov 9, 1999United States Surgical CorporationMethods and apparatus for performing ultrasound and enhanced X-ray imaging
US6022325 *Sep 4, 1998Feb 8, 2000Fischer Imaging CorporationMammographic biopsy apparatus
US6027457 *Jun 18, 1998Feb 22, 2000United States Surgical CorporationApparatus and method for securing tissue during ultrasound examination and biopsy
US6031892 *Jun 6, 1995Feb 29, 2000University Of Massachusetts Medical CenterSystem for quantitative radiographic imaging
US6445767Sep 2, 1999Sep 3, 2002University Of Massachussetts Medical CenterSystem for quantitative radiographic imaging
US7699523 *Jun 19, 2007Apr 20, 2010Konica Minolta Medical & Graphic, Inc.Radiation image photographing apparatus
US8194819May 12, 2010Jun 5, 2012Siemens AktiengesellschaftMammography method and mammography apparatus
DE102009021023A1 *May 13, 2009Nov 18, 2010Siemens AktiengesellschaftMammographieverfahren und Mammographiegerät
EP0387475A1 *Sep 15, 1989Sep 19, 1990I.M.S. INTERNAZIONALE MEDICO SCIENTIFICA S.r.l.Mammography apparatus
EP0543801A2 *May 4, 1989May 26, 1993Automed OyMammographic methods and apparatuses
WO1989011248A1 *May 4, 1989Nov 30, 1989Automed OyMammographic methods and apparatuses
Classifications
U.S. Classification378/37, 378/180, D24/158, 378/195
International ClassificationA61B6/00
Cooperative ClassificationA61B6/502
European ClassificationA61B6/50D