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US20070094797A1 - Patient positioning device for a computer tomograph - Google Patents

Patient positioning device for a computer tomograph Download PDF

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Publication number
US20070094797A1
US20070094797A1 US10/577,845 US57784504A US2007094797A1 US 20070094797 A1 US20070094797 A1 US 20070094797A1 US 57784504 A US57784504 A US 57784504A US 2007094797 A1 US2007094797 A1 US 2007094797A1
Authority
US
United States
Prior art keywords
rotating joint
arm
positioning device
patient
patient positioning
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.)
Abandoned
Application number
US10/577,845
Other languages
English (en)
Inventor
Frank Bartels
Gerhard Helmreich
Stefan Leidenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BARTELS, FRANK, HELMREICH, GERHARD, LEIDENBERGER, STEFAN
Publication of US20070094797A1 publication Critical patent/US20070094797A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • A61B6/0487—Motor-assisted positioning

Definitions

  • This application relates to a patient positioning device for a computer tomograph device and, to a computer tomograph device having a patient positioning device of this kind.
  • Computer tomograph devices serve to make three-dimensional images or images of slices of a body.
  • the image data are computed by a computer using two-dimensional X-ray projections of the body.
  • an X-ray beam source and an image detector are disposed diametrically opposite one another and rotate about the body to be examined. The rotation takes place inside a gantry which has an examination opening, or aperture, into which the body can be introduced.
  • a patient positioning device should therefore assure sufficiently stable support of the patient body and should not have any significant sagging, for instance, in response to the patient's weight.
  • a complicated construction for supporting the patient body in the examination opening of the gantry cannot be used, because it would create interfering artifacts in the image.
  • a patient positioning device should be adjustable flexibly enough that handling the patient when shifting the patient onto the patient positioning device and providing medical care of a patient already lying on it is made simpler.
  • German patent disclosure DE 101 08 549 teaches a patient positioning device that enables flexible positioning and assures a stable position of the patient's body in the examination opening of the gantry of a CT device.
  • the positioning device offers no possibility of height adjustment, and has a bulky construction below the patient, which makes accessibility more difficult.
  • a patient positioning device for a computer tomograph (CT) device and a CT device having such a patient positioning device are described.
  • the patient positioning device ensures a stable position of the patient body in the examination opening of the gantry, is simultaneously flexibly adjustable in position, and has good accessibility to medical staff.
  • the patient positioning device for a computer tomograph device includes a gantry supported on a base; a bed guide for a patient bed; and has an arm which is supported in the vicinity of the head end and the foot end thereof by rotating joints that are rotatable about a horizontal axis that is disposed perpendicular to the length of the patient positioning device.
  • the bed guide is supported on the arm by a joint that is rotatable about a horizontal axis and that is perpendicular to the length of the patient positioning device.
  • the height of the bed guide is adjustable by movement of the arm about the rotating joints supporting the arm. When the bed guide is partly or completely lowered, the rotating joint is not located underneath the bed guide.
  • the bed guide is supported on an arm in the vicinity of its head end or foot end.
  • a construction is obtained in which the space below the bed guide remains free.
  • bed guide should be understood in this context to mean a structural element that makes it possible to attach a patient bed.
  • the bed guide may have the capability of being solidly connected to a patient bed, or it may be a rail-like guide that allows the patient bed to be placed on the bed guide or slidabley inserted therein for displacement in the longitudinal direction.
  • a CT examination can, for instance, proceed unimpeded for a first patient, while another patient is being placed on another lowered patient bed.
  • the bed guide While being raised, the bed guide is also simultaneously moved closer to the gantry, which is an improvement in terms of wear and tear on the patient bed and thus on the patient's body in the examination area. For instance, the leverage with which the patient weight is supported relative to the bed guide and which causes sagging of the patient bed is reduces.
  • the patient positioning device has a height adjuster, which is connected to the arm such that the height adjuster can rotate the arm about the rotating joint by which the arm is supported in the vicinity of the head end or foot end of the base.
  • the height adjuster may have a motor for this purpose, which adjusts the arm, for instance, by means of a worm drive associated with the motor and a gear wheel on the arm.
  • the motor may also drive a hydraulic drive that drives the arm around the rotating joint.
  • the height adjuster permits an automatic adjustment of the height of the patient bed and thus makes the work of the medical staff easier.
  • the patient positioning device has a support arm, which is supported on the arm by a joint that is rotatable about a horizontal axis, and on which support arm the bed guide is supported by a joint that is rotatable about a horizontal axis.
  • the length of the arm may be automatically adjustable such that the orientation of the bed guide remains stable, regardless of a rotation of the arm. This permits a patient to be placed, for instance, on a horizontally oriented patient bed, and the orientation of the patient bed to be maintained when the height of the patient bed is adjusted.
  • Maintaining the orientation of the patient bed is pleasant for the patient who is being moved automatically by the patient positioning device, and enables positioning the patient, with the patient bed lowered, in exactly the position in which an ensuing CT examination is to be done. Changes in the patient position, as the patient positioning device is moved to approach the gantry, which could cause movements on the part of the patient and hence interfering artifacts in the CT image data, are thus averted.
  • the automatic adjustment of the length of the support arm can be implemented in a similar manner to the rotary motion of the arm. For instance, if the rotary motion is attained purely mechanically, such as by a worm drive and a gear wheel, then the adjustment of the length of the support arm can also be accomplished by means of a mechanical gear-wheel or lever system. If the rotary motion of the arm is driven hydraulically, then the length of the support arm can also be adjusted hydraulically.
  • Hydraulic adjustment enables flexible movement of both the arm and the support arm, so that the height of the patient bed is adjustable by the arm, and the orientation is adjustable by the support arm, freely and independently of one another. If the orientation of the bed guide is to be maintained while the arm is being adjusted, the longitudinal adjustment of the support arm may be adapted to the motion of the arm.
  • the hydraulic drive can perform the longitudinal adjustment in accordance with a characteristic curve as a function of the adjustment of the arm. The characteristic curve depends on the geometric relationships among the arm, the support arm, and their rotating joints.
  • a CT device has one patient positioning device on each side of the through-hole opening, or aperture, of the gantry. CT examinations of a plurality of patients may be performed smoothly and quickly.
  • one patient can be placed on the lowered patient bed on one side of the gantry, and another patient located on the other patient positioning device can be examined in the CT device contemporaneously.
  • the patient bed is lowered and thus moved away from the gantry. This makes the examination opening available for the examination of the next patient, who is moved toward the examination opening by the motion of another patient positioning device.
  • the patient bed of a further patient to be examined can then be introduced into the bed guide of the patient positioning device on the opposite side.
  • the CT examination of that patient then begin while the patient positioning device on the second side is lowered again for receiving a further patient.
  • FIG. 1 is a perspective view of a CT device with a patient positioning device
  • FIG. 2 is a side view of the CT device with the patient positioning device.
  • FIG. 3 is a side view CT device with another example of the patient positioning device.
  • a CT device 1 with a patient positioning device is shown in a perspective view in FIG. 1 .
  • the CT device 1 has a gantry 3 with an examination opening.
  • the gantry 3 rests on a base 5 .
  • a patient to be examined is placed on a patient bed 9 , which is introduced into the bed guide 7 .
  • the bed guide 7 guides the patient bed 9 so that the patient bed is displaceable longitudinally, such that the patient bed 9 may be introduced into the examination opening or aperture in the gantry 3 .
  • Gantry 3 may have a patient positioning device on each side of the examination opening, and the patient bed 9 , on being introduced into the aperture in gantry 3 , is transferred the bed guide 7 ′ of the opposite patient positioning device disposed at the opposite side of the aperture.
  • the bed guide 7 is supported in the arm 11 via a rotating joint 19 , rotatable about a horizontal axis.
  • the arm 11 is supported in or on the base 5 by a rotating joint 17 such that the arm 11 is rotatable about a horizontal axis.
  • the rotating joint 17 may be integrated with the base 5 .
  • the rotating joint 17 may be part of the patient positioning device, and be mounted in the vicinity of the base 5 but not as an integral part thereof.
  • the patient positioning device can be a structural unit that is independent of the CT device 1 and that may be joined to it in modular fashion.
  • the height of the bed guide 7 is adjusted by rotating the arm 11 about the rotating joint 17 .
  • the bed guide 7 also rotates about the corresponding rotating joint 19 .
  • the orientation of the bed guide 7 is stabilized by means of a support arm 13 .
  • the support arm 13 supports the bed guide such that sagging due to the patient's weight is reduced.
  • the support arm 13 is supported in the arm 11 by a rotating joint 21 that is rotatable about a horizontal axis, and by a rotating joint 23 in the bed guide 7 that is rotatable about a horizontal axis.
  • the length of the support arm 13 may be adjusted mechanically by a gear-wheel or lever system that is driven by a rotary motion of the arm 11 .
  • the support arm 13 length adjustment may be effected hydraulically and may be adapted to the motion of the arm 11 by means of a characteristic curve for controlling the hydraulic drive.
  • the rotary motion of the arm 11 can be driven either mechanically, for instance by a motor-driven worm gear and a gear wheel on the arm, or by a hydraulic drive.
  • the patient positioning device may be configured such that the bed guide 7 automatically maintains a horizontal orientation, or such that the orientation of the bed guide 7 can be adjusted by the medical staff.
  • an orientation once assumed, is automatically maintained by means of the mechanics or the hydraulics.
  • FIG. 1 Another patient positioning device, located on an opposite side of the gantry 3 , is illustrated by the bed guide 7 ′, visible FIG. 1 .
  • the gantry 3 may have a patient positioning device on either one side or on both sides.
  • FIG. 2 shows a side view of the CT device 1 with the patient positioning device disposed on each side of the gantry 3 , A patient bed 9 introduced into the left-hand one of the two bed guides 7 , 7 ′.
  • the t second patient positioning device also has an arm 11 ′, with rotating joints 17 ′, 19 ′ that are rotatable about horizontal axes, and a support arm 13 , with rotating joints 21 ′, 23 ′ that are rotatable about horizontal axes.
  • a height adjuster 15 serves to adjust the height of the bed guide 7 by means of a rotary motion of the arm 11 about the joint 17 .
  • the rotary motion of the arm 11 is by motor, mechanically, or hydraulically.
  • the individual components of the height adjuster 15 are not shown in the drawing.
  • Each of the two patient positioning devices has its own height adjuster 15 , 15 ′, so that the height of each of the two bed guides 7 , 7 ′ may be adjusted independently of one another.
  • FIG. 3 shows a side view of a CT device 1 with one patient positioning device on each of the two sides of the gantry 3 .
  • the patient positioning devices have the similar characteristics to the patient positioning devices shown in FIG. 2 , with the exception of the support arms 13 , 13 ′.
  • Support arms 13 , 13 ′ are rotatably attached to the height adjusters 15 , 15 ′, and to the bed guides 7 , 7 ′ by rotatable hinges 23 , 23 ′ and cooperate with the base 5 , 5 , and the bed guides 7 , 7 ′ to create a parallelogram structure with the arms 11 , 11 ′.
  • Such an arrangement assures the horizontal orientation of the bed guides 7 , 7 ′ during a height adjustment process.
  • the arms 11 , 11 ′ are supported as described above and are driven by height adjusters 15 , 15 ′, the support arms 13 , 13 ′ are now located parallel to the arms 11 , 11 ′. While one bearing point of the support arms 13 , 13 ′ is still located in bed guides 7 , 7 ′, the other bearing point is located in or on the base 5 , to achieve a parallelogram arrangement.
  • the parallelogram arrangement mechanically maintains the orientation of the bed guides 7 , 7 ′ regardless of the motions of the arms 11 , 11 ′,
  • the support arms 13 , 13 ′ may be adjustable in length. The length adjustment can be effected mechanically or hydraulically.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
US10/577,845 2003-10-31 2004-10-28 Patient positioning device for a computer tomograph Abandoned US20070094797A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10350900.3 2003-10-31
DE10350900A DE10350900A1 (de) 2003-10-31 2003-10-31 Patientenlagerungsvorrichtung für einen Computer-Tomographen
PCT/EP2004/052688 WO2005041777A1 (de) 2003-10-31 2004-10-28 Patientenlagerungsvorrichtung für einen computer-tomographen

Publications (1)

Publication Number Publication Date
US20070094797A1 true US20070094797A1 (en) 2007-05-03

Family

ID=34529977

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/577,845 Abandoned US20070094797A1 (en) 2003-10-31 2004-10-28 Patient positioning device for a computer tomograph

Country Status (6)

Country Link
US (1) US20070094797A1 (de)
EP (1) EP1677678A1 (de)
JP (1) JP2007509672A (de)
CN (1) CN1874728A (de)
DE (1) DE10350900A1 (de)
WO (1) WO2005041777A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100287703A1 (en) * 2009-05-15 2010-11-18 Koninklijke Philips Electronics N. V. Deflection compensating mechanism for patient imaging table
US20130064347A1 (en) * 2010-04-29 2013-03-14 Planmed Oy Medical x-ray imaging apparatus
US20210299479A1 (en) * 2018-08-03 2021-09-30 Itrec B.V. Proton therapy gantry

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6049243B2 (ja) * 2011-08-24 2016-12-21 東芝メディカルシステムズ株式会社 医用画像診断装置
CN116115251B (zh) * 2023-02-06 2025-08-26 明峰医疗系统股份有限公司 一种用于ct医学检查的患者侧身支撑结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576368A (en) * 1983-12-09 1986-03-18 Yokogawa Medical Systems, Limited Table mechanism
US5657498A (en) * 1995-11-20 1997-08-19 General Electric Company Methods and apparatus for acquiring table elevation information
US20020112288A1 (en) * 2001-02-22 2002-08-22 Matthias Seufert Imaging medical examination apparatus having a bearing mechanism
US6637056B1 (en) * 2001-06-01 2003-10-28 Analogic Corporation Lifting apparatus and method for patient table
US7024710B2 (en) * 2002-11-25 2006-04-11 Ge Medical Systems Global Technology Company, Llc Parallel-link table and tomographic imaging apparatus
US7077569B1 (en) * 2002-12-10 2006-07-18 Analogic Corporation Apparatus and method for supporting pallet extending from patient table

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE727207C (de) * 1939-12-19 1942-10-29 Odelga Aerztlich Tech Ind Ag J Operationstisch
JPS6113940A (ja) * 1984-06-28 1986-01-22 株式会社島津製作所 断層映像装置
GB2286887B (en) * 1994-02-16 1998-02-25 Oxford Magnet Tech Improvements in or relating to medical scanning apparatus
DE10108549A1 (de) 2001-02-22 2002-03-14 Siemens Ag Verstellbare Patientenliege für eine Computertomografieanlage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576368A (en) * 1983-12-09 1986-03-18 Yokogawa Medical Systems, Limited Table mechanism
US5657498A (en) * 1995-11-20 1997-08-19 General Electric Company Methods and apparatus for acquiring table elevation information
US20020112288A1 (en) * 2001-02-22 2002-08-22 Matthias Seufert Imaging medical examination apparatus having a bearing mechanism
US6637056B1 (en) * 2001-06-01 2003-10-28 Analogic Corporation Lifting apparatus and method for patient table
US7024710B2 (en) * 2002-11-25 2006-04-11 Ge Medical Systems Global Technology Company, Llc Parallel-link table and tomographic imaging apparatus
US7077569B1 (en) * 2002-12-10 2006-07-18 Analogic Corporation Apparatus and method for supporting pallet extending from patient table

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100287703A1 (en) * 2009-05-15 2010-11-18 Koninklijke Philips Electronics N. V. Deflection compensating mechanism for patient imaging table
US8191190B2 (en) 2009-05-15 2012-06-05 Koninklijke Philips Electronics N.V. Deflection compensating mechanism for patient imaging table
US20130064347A1 (en) * 2010-04-29 2013-03-14 Planmed Oy Medical x-ray imaging apparatus
US9687202B2 (en) * 2010-04-29 2017-06-27 Planmed Oy Medical x-ray imaging apparatus
US20210299479A1 (en) * 2018-08-03 2021-09-30 Itrec B.V. Proton therapy gantry
US12070626B2 (en) * 2018-08-03 2024-08-27 Itrec B.V. Proton therapy gantry

Also Published As

Publication number Publication date
WO2005041777A1 (de) 2005-05-12
EP1677678A1 (de) 2006-07-12
DE10350900A1 (de) 2005-06-09
CN1874728A (zh) 2006-12-06
JP2007509672A (ja) 2007-04-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BARTELS, FRANK;HELMREICH, GERHARD;LEIDENBERGER, STEFAN;REEL/FRAME:017864/0365;SIGNING DATES FROM 20060328 TO 20060331

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION