WO2008004947A1 - Compression device - Google Patents

Compression device Download PDF

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Publication number
WO2008004947A1
WO2008004947A1 PCT/SE2007/000648 SE2007000648W WO2008004947A1 WO 2008004947 A1 WO2008004947 A1 WO 2008004947A1 SE 2007000648 W SE2007000648 W SE 2007000648W WO 2008004947 A1 WO2008004947 A1 WO 2008004947A1
Authority
WO
WIPO (PCT)
Prior art keywords
tensioning
belt
unit
compression device
fastening unit
Prior art date
Application number
PCT/SE2007/000648
Other languages
French (fr)
Inventor
Ylva Ryngebo
Original Assignee
Ylva Ryngebo
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 Ylva Ryngebo filed Critical Ylva Ryngebo
Priority to DE212007000040U priority Critical patent/DE212007000040U1/en
Publication of WO2008004947A1 publication Critical patent/WO2008004947A1/en

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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
    • A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
    • A61B6/0414—Supports, e.g. tables or beds, for the body or parts of the body with compression means

Definitions

  • the present invention relates to a compression device pertaining to X-ray examinations, whereby the compression device is intended to be fitted on or close to an X-ray examination table and comprises a flexible belt and a means for tensioning the flexible belt, part of the flexible belt being wound on a roller.
  • a compression device known from SE 463344 B for X-ray and similar examinations is fitted on a patient examination table.
  • the compression device comprises a winding device with rollers which are movable en bloc on each side of the table.
  • a belt of flexible material runs between the rollers. Compression is effected by means of a manual drive device, whereby the two rollers rotate simultaneously.
  • a yoke forming part of the compression device causes the belt to assume an inactive position raised from the patient examination table, thereby making it possible for the patient to assume an examination position between the belt and the table.
  • a compression device known from WO/0009015 is intended to be used for the purposes of X-ray examinations. That compression device comprises a compression plate which is caused to abut against the portion of the patient which is to be X- rayed. The compression plate is moved by a mechanism which is activated by a lever which is moved up and down.
  • a primary object of the present invention is to propose a compression device of the kind defined in the introduction which
  • I DCP ⁇ Dn ⁇ n/ ⁇ n ⁇ ⁇ o ⁇ n-i-i/ ⁇ should be extraordinarily easy for the person in charge of the X-ray examination to use, which is ergonomically important in the context.
  • a further object of the present invention is that the compression device should be able to handle patients of different sizes.
  • Still another object of the present invention is that it should be able to be fitted on an existing X-ray examination table.
  • At least the primary object of the present invention is realised by a compression device having the features indicated in the independent claim 1 set out below. Further embodiments of the invention are defined in the dependent claims .
  • FIG. 1 depicts a perspective view of a compression device according to the present invention, comprising a tensioning unit and a fastening unit
  • Fig. 2 depicts a perspective view of the fastening unit as seen from beneath
  • Fig. 3 depicts a perspective view of the fastening unit as seen from beneath at a different angle from that in
  • the compression device comprises a tensioning unit 201, a fastening unit 203 and a flexible belt 205, preferably made of plastic, which extends between the tensioning unit 201 and the fastening unit 203.
  • Flexible in this context means that the belt 205 can adopt the shape of a patient's body but is in principle not stretchable in its longitudinal direction.
  • the tensioning unit 201 and the fastening unit 203 are fitted on opposite longitudinal edges of an X-ray examination table (not depicted) .
  • the tensioning unit 201 and the fastening unit 203 are movable relative to the X-ray examination table along the latter' s longitudinal edges.
  • the tensioning unit 201 and the fastening unit 203 being fastened to the X-ray examination table by means which effect a clamping function, whereby the force which the clamping function exerts is so adapted that the tensioning unit 201 and the fastening unit 203 are movable along the X-ray examination table.
  • the fastening unit 203 has means for fastening to the X- ray examination table which make it possible for the fastening unit 203 to be fitted movably on a longitudinal edge of an X-ray examination table.
  • FIGS. 2 and 3 which show the fastening unit 203 provided on its underside with a number of support brackets 230 and a spring- loaded clamp 231 which can be caused to abut against the underside of the X-ray examination table.
  • the operator can by manual action neutralise the action of the clamp 231 so that the fastening unit 203 can be moved along a longitudinal edge of the X-ray examination table.
  • the support brackets 230 define a gap 232 relative to the frame 229 of the fastening unit 203.
  • Fig. 4 shows the fastening unit 203 applied to a longitudinal edge of an X-ray examination table B.
  • the movability of the fastening unit 203 relative to the X-ray examination table B is indicated by the arrows Pl in Fig. 4.
  • the tensioning unit 201 comprises a tensioning arm 214 by which the flexible belt 205 can be tensioned when it is fastened/anchored in the fastening unit 203.
  • the flexible belt 205 in an inactive state, is wound on a roller 209 which forms part of the tensioning unit 201, the flexible belt 205 having at its free end a rail 210, preferably made of metal.
  • the metal rail 210 is of generally U-shaped cross- section, as most clearly illustrated in Fig. 6.
  • a handle 208 is firmly connected to the rail 210.
  • the fastening unit 203 comprises an elongate locking element 220 which in this embodiment takes the form of a bar 220 fastened to two endwalls 228 which are themselves fastened to a frame 229.
  • the bar 220 is of square cross-section.
  • the inside dimensions of the U-shaped rail 210 are adapted to the bar 220 in such a way that the rail 210 can be hooked on the bar 220 of the fastening unit 203, see Figs. 1 and 7.
  • the bar 220 is thus accommodated within the rail 210.
  • the flexible belt 205 can be tensioned appropriately as described below.
  • Fig. 8 shows a gearwheel 215 mounted on a shaft 216 of the tensioning unit 201, which shaft 216 also bears the roller 209 which forms part of the tensioning unit 201.
  • the gearwheel 215 is fixed to shaft 216, i.e. when the gearwheel 215 rotates, the shaft 216 and the roller 209 will rotate with it.
  • the tensioning arm 214 is supported for rotation on the shaft 216.
  • the driving tooth 218 will engage with the teeth of the gearwheel 215, resulting in driving of the gearwheel 215, the shaft 216 and the roller 209.
  • the driving tooth 218 will spring away, i.e. disengage from the gearwheel 215, resulting in no driving of the gearwheel 215.
  • a ratchet 219 also forms part of the tensioning mechanism and is mounted pivotably relative to a stationary element 202 of the tensioning unit 201.
  • a tensioning mechanism corresponding to that described above is also arranged at the opposite end of the shaft 216, i.e. there is a tensioning mechanism at each end of the shaft 216, thereby ensuring that there is no oblique loading of the shaft 216 when the tensioning mechanisms are activated.
  • Fig. 9 depicts the tensioning unit 201 as seen from the opposite side to Fig. 8.
  • Fig. 9 shows a tension spring of the roller blind type fitted to the shaft 216.
  • the tension spring 235 acts in such a way that when the shaft 216 rotates in a certain direction, more specifically in the direction in which the shaft 216 rotates when the belt 205 is drawn from the tensioning unit 201 to the fastening unit 203 in order to be releasably anchored in the fastening unit 203, the tension spring 235 will be tensioned.
  • the tension spring 235 will rotate the roller 209 and the shaft 216 so that the belt 205 is wound onto the roller 209.
  • a patient lies on the examination table and the person in charge of the X-ray examination draws the flexible belt 205 out from the tensioning unit 201, draws the belt 205 across the patient and anchors the metal rail 210 in the fastening unit 203 in the manner described above. Unwinding the belt 205 from the roller 209 will tension or "load" the tension spring 235. Thereafter the flexible belt 205 is tensioned by activating the tensioning unit 201, which is effected by the tensioning arm 214 being moved up and down. Thereafter the tensioning mechanisms will be activated in the manner described above, the flexible belt 205 will be wound onto the roller 209 and the flexible belt 205 will be tensioned against the patient. When the desired compression of the relevant portion of the patient' s body has been achieved, the activation of the tensioning unit 201 ceases and the desired X- ray shots are taken.
  • the tension in the flexible belt 205 is neutralised by the ratchets 219 of the tensioning mechanisms being released. Thereafter the metal rail 210 is removed from the fastening unit 203 by the operator grasping the handle 208 and moving the rail 210 so that the rail 210 is hooked by the bar 220. The "loaded” tension spring 235 then rotates the roller 209 so that the belt 205 is wound onto the roller 209.
  • a reciprocating tensioning arm 214 is used for tightening the flexible belt 205, but it is possible within the scope of the present invention to conceive of alternative means for tightening the flexible belt 205, such as, by way of non-limitative example, a crank. It is also conceivable for the tightening of the belt 205 to be effected by means of a motor or the like which rotates the roller, in which case the motor is activated by a button or the like.

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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)

Abstract

The present invention relates to a compression device pertaining to X-ray examinations, whereby the compression device is intended to be fitted on or close to an X-ray examination table and comprises a flexible belt and means (210) for tensioning the flexible belt (205), whereby part of the flexible belt (205) is wound on a roller (209). Distinguishing features of the compression device according to the present invention are that the device comprises a fastening unit (203) and that the fastening unit (203) and an end of the flexible belt (205) are provided with cooperating means for releasable fastening of said end in the fastening unit (203).

Description

COMPRESSION DEVICE
Technical field of the invention
The present invention relates to a compression device pertaining to X-ray examinations, whereby the compression device is intended to be fitted on or close to an X-ray examination table and comprises a flexible belt and a means for tensioning the flexible belt, part of the flexible belt being wound on a roller.
State of the art
A compression device known from SE 463344 B for X-ray and similar examinations is fitted on a patient examination table. The compression device comprises a winding device with rollers which are movable en bloc on each side of the table. A belt of flexible material runs between the rollers. Compression is effected by means of a manual drive device, whereby the two rollers rotate simultaneously. A yoke forming part of the compression device causes the belt to assume an inactive position raised from the patient examination table, thereby making it possible for the patient to assume an examination position between the belt and the table.
A compression device known from WO/0009015 is intended to be used for the purposes of X-ray examinations. That compression device comprises a compression plate which is caused to abut against the portion of the patient which is to be X- rayed. The compression plate is moved by a mechanism which is activated by a lever which is moved up and down.
Object and features of the invention
A primary object of the present invention is to propose a compression device of the kind defined in the introduction which
I DCPΛDn ΛΛn/τn< ιιoι n-i-i/^. should be extraordinarily easy for the person in charge of the X-ray examination to use, which is ergonomically important in the context.
A further object of the present invention is that the compression device should be able to handle patients of different sizes.
Still another object of the present invention is that it should be able to be fitted on an existing X-ray examination table.
At least the primary object of the present invention is realised by a compression device having the features indicated in the independent claim 1 set out below. Further embodiments of the invention are defined in the dependent claims .
Brief description of the drawings
A preferred embodiment of the invention is described below with reference to the attached drawings, in which: Fig. 1 depicts a perspective view of a compression device according to the present invention, comprising a tensioning unit and a fastening unit; Fig. 2 depicts a perspective view of the fastening unit as seen from beneath; Fig. 3 depicts a perspective view of the fastening unit as seen from beneath at a different angle from that in
Fig. 2; Fig. 4 depicts a perspective view of the fastening unit when fitted on an X-ray examination table; Fig. 5 depicts a perspective view of the fastening unit and the tensioning unit when the belt is wound on the tensioning unit; Fig. 6 depicts a perspective view of a rail which forms part of the tensioning unit; Fig. 7 depicts a perspective view of how the rail according to Fig. 6 is connected to the fastening unit; Fig. 8 depicts a perspective view of the tensioning unit as seen from one side, with certain parts of the housing omitted for greater clarity; and Fig. 9 depicts a perspective view of the tensioning unit as seen from the other side, with certain parts of the housing omitted for greater clarity.
Detailed description of a preferred embodiment of the invention
With reference to Fig. 1, the compression device according to the present invention comprises a tensioning unit 201, a fastening unit 203 and a flexible belt 205, preferably made of plastic, which extends between the tensioning unit 201 and the fastening unit 203. Flexible in this context means that the belt 205 can adopt the shape of a patient's body but is in principle not stretchable in its longitudinal direction. The tensioning unit 201 and the fastening unit 203 are fitted on opposite longitudinal edges of an X-ray examination table (not depicted) . The tensioning unit 201 and the fastening unit 203 are movable relative to the X-ray examination table along the latter' s longitudinal edges. This may for example be made possible by the tensioning unit 201 and the fastening unit 203 being fastened to the X-ray examination table by means which effect a clamping function, whereby the force which the clamping function exerts is so adapted that the tensioning unit 201 and the fastening unit 203 are movable along the X-ray examination table. The fastening unit 203 has means for fastening to the X- ray examination table which make it possible for the fastening unit 203 to be fitted movably on a longitudinal edge of an X-ray examination table. In this context we refer particularly to Figs. 2 and 3, which show the fastening unit 203 provided on its underside with a number of support brackets 230 and a spring- loaded clamp 231 which can be caused to abut against the underside of the X-ray examination table. The operator can by manual action neutralise the action of the clamp 231 so that the fastening unit 203 can be moved along a longitudinal edge of the X-ray examination table. The support brackets 230 define a gap 232 relative to the frame 229 of the fastening unit 203.
Fig. 4 shows the fastening unit 203 applied to a longitudinal edge of an X-ray examination table B. The movability of the fastening unit 203 relative to the X-ray examination table B is indicated by the arrows Pl in Fig. 4.
The tensioning unit 201 comprises a tensioning arm 214 by which the flexible belt 205 can be tensioned when it is fastened/anchored in the fastening unit 203.
As illustrated in Fig. 5, the flexible belt 205, in an inactive state, is wound on a roller 209 which forms part of the tensioning unit 201, the flexible belt 205 having at its free end a rail 210, preferably made of metal. In the embodiment depicted, the metal rail 210 is of generally U-shaped cross- section, as most clearly illustrated in Fig. 6. A handle 208 is firmly connected to the rail 210.
As illustrated in Figs. 4, 5 and 7, the fastening unit 203 comprises an elongate locking element 220 which in this embodiment takes the form of a bar 220 fastened to two endwalls 228 which are themselves fastened to a frame 229. In the embodiment depicted, the bar 220 is of square cross-section.
The inside dimensions of the U-shaped rail 210 are adapted to the bar 220 in such a way that the rail 210 can be hooked on the bar 220 of the fastening unit 203, see Figs. 1 and 7. The bar 220 is thus accommodated within the rail 210. Thereafter the flexible belt 205 can be tensioned appropriately as described below. Fig. 8 shows a gearwheel 215 mounted on a shaft 216 of the tensioning unit 201, which shaft 216 also bears the roller 209 which forms part of the tensioning unit 201. The gearwheel 215 is fixed to shaft 216, i.e. when the gearwheel 215 rotates, the shaft 216 and the roller 209 will rotate with it. The tensioning arm 214 is supported for rotation on the shaft 216. A driving tooth 218, which is spring-loaded (spring loading not depicted) , is attached to the tensioning arm 214 via a mounting plate 217. When the tensioning arm 214 is moved upwards in Fig. 8, the driving tooth 218 will engage with the teeth of the gearwheel 215, resulting in driving of the gearwheel 215, the shaft 216 and the roller 209. When the tensioning arm 214 is moved downwards in Fig. 8, the driving tooth 218 will spring away, i.e. disengage from the gearwheel 215, resulting in no driving of the gearwheel 215. A ratchet 219 also forms part of the tensioning mechanism and is mounted pivotably relative to a stationary element 202 of the tensioning unit 201. In this context it should be noted that a tensioning mechanism corresponding to that described above is also arranged at the opposite end of the shaft 216, i.e. there is a tensioning mechanism at each end of the shaft 216, thereby ensuring that there is no oblique loading of the shaft 216 when the tensioning mechanisms are activated.
Fig. 9 depicts the tensioning unit 201 as seen from the opposite side to Fig. 8. Fig. 9 shows a tension spring of the roller blind type fitted to the shaft 216. The tension spring 235 acts in such a way that when the shaft 216 rotates in a certain direction, more specifically in the direction in which the shaft 216 rotates when the belt 205 is drawn from the tensioning unit 201 to the fastening unit 203 in order to be releasably anchored in the fastening unit 203, the tension spring 235 will be tensioned. When thereafter the belt 205 is released from the fastening unit 203, the tension spring 235 will rotate the roller 209 and the shaft 216 so that the belt 205 is wound onto the roller 209.
At the time of an X-ray examination, a patient lies on the examination table and the person in charge of the X-ray examination draws the flexible belt 205 out from the tensioning unit 201, draws the belt 205 across the patient and anchors the metal rail 210 in the fastening unit 203 in the manner described above. Unwinding the belt 205 from the roller 209 will tension or "load" the tension spring 235. Thereafter the flexible belt 205 is tensioned by activating the tensioning unit 201, which is effected by the tensioning arm 214 being moved up and down. Thereafter the tensioning mechanisms will be activated in the manner described above, the flexible belt 205 will be wound onto the roller 209 and the flexible belt 205 will be tensioned against the patient. When the desired compression of the relevant portion of the patient' s body has been achieved, the activation of the tensioning unit 201 ceases and the desired X- ray shots are taken.
When the X-ray examination has been completed, the tension in the flexible belt 205 is neutralised by the ratchets 219 of the tensioning mechanisms being released. Thereafter the metal rail 210 is removed from the fastening unit 203 by the operator grasping the handle 208 and moving the rail 210 so that the rail 210 is hooked by the bar 220. The "loaded" tension spring 235 then rotates the roller 209 so that the belt 205 is wound onto the roller 209.
Conceivable modifications of the invention
In the embodiment described above, a reciprocating tensioning arm 214 is used for tightening the flexible belt 205, but it is possible within the scope of the present invention to conceive of alternative means for tightening the flexible belt 205, such as, by way of non-limitative example, a crank. It is also conceivable for the tightening of the belt 205 to be effected by means of a motor or the like which rotates the roller, in which case the motor is activated by a button or the like.

Claims

Claims
1. A compression device pertaining to X-ray examinations, whereby the compression device is intended to be fitted on or close to an X-ray examination table and comprises a flexible belt (205) and a tensioning unit (201) for tensioning the flexible belt (205), whereby part of the flexible belt (205) is wound on a roller (209) of the tensioning unit (201), the device comprises a fastening unit (203) , and the fastening unit (203) and one end of the flexible belt (205) have cooperating means (210, 220) for releasable fastening of said end of the belt (205) in the fastening unit (203) , c h a r a c t e r i z e d in that the tensioning unit (201) comprises a tension spring (235) , that the tension spring (235) is tensioned when the belt (205) is drawn from the tensioning unit (201) to the fastening unit (203) and that when the belt (205) is released from the fastening unit (203) the tension spring (235) will rotate the roller (209) so that the belt (205) is wound onto the roller (209) .
2. A compression device according to claim 1, c h a r a c t e r i z e d in that the tension spring (235) takes the form of a type of roller blind spring.
3. A compression device according to either of claims 1 and 2, c h a r a c t e r i z e d in that the tensioning unit (201) comprises a tensioning arm (214).
4. A compression device according to any of claims 1-3, c h a r a c t e r i z e d in that the tensioning unit (201) comprises a tensioning mechanism itself comprising a gearwheel (215), a driving tooth (218) and a ratchet (219).
5. A compression device according to any of the above claims, c h a r a c t e r i z e d in that a handle (208) is disposed close to the releasably fastened end of the belt (205).
6. A compression device according to any of the above claims, c h a r a c t e r i z e d in that the means for releasable fastening of the belt (205) comprise a U-shaped rail (210) disposed at a free end of the flexible belt (205), and a bar
(220) forming part of the fastening unit (203) .
PCT/SE2007/000648 2006-07-04 2007-07-03 Compression device WO2008004947A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212007000040U DE212007000040U1 (en) 2006-07-04 2007-07-03 compression device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0601451A SE0601451L (en) 2006-07-04 2006-07-04 compression device
SE0601451-8 2006-07-04

Publications (1)

Publication Number Publication Date
WO2008004947A1 true WO2008004947A1 (en) 2008-01-10

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ID=38894826

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/000648 WO2008004947A1 (en) 2006-07-04 2007-07-03 Compression device

Country Status (3)

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DE (1) DE212007000040U1 (en)
SE (1) SE0601451L (en)
WO (1) WO2008004947A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907054A (en) * 1932-08-29 1933-05-02 Holy Family Hospital X-ray apparatus
US2027318A (en) * 1932-09-02 1936-01-07 Westinghouse X Ray Co Inc Immobilization belt for x-ray apparatus
US2774884A (en) * 1953-06-22 1956-12-18 Ernest A Fox Apparatus for laterally x-raying the spinal column
US4122587A (en) * 1976-03-15 1978-10-31 Siemens Aktiengesellschaft Patient securing device
US4143445A (en) * 1977-04-01 1979-03-13 Siemens Aktiengesellschaft Fixation device
US5048541A (en) * 1990-08-06 1991-09-17 Haneline Michael T X-ray patient restraint

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE463344B (en) 1989-03-31 1990-11-12 Ao Medical Products Ab Compression device for X-ray and similar examination
SE512953C2 (en) 1998-08-11 2000-06-12 Lena Harning compression device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907054A (en) * 1932-08-29 1933-05-02 Holy Family Hospital X-ray apparatus
US2027318A (en) * 1932-09-02 1936-01-07 Westinghouse X Ray Co Inc Immobilization belt for x-ray apparatus
US2774884A (en) * 1953-06-22 1956-12-18 Ernest A Fox Apparatus for laterally x-raying the spinal column
US4122587A (en) * 1976-03-15 1978-10-31 Siemens Aktiengesellschaft Patient securing device
US4143445A (en) * 1977-04-01 1979-03-13 Siemens Aktiengesellschaft Fixation device
US5048541A (en) * 1990-08-06 1991-09-17 Haneline Michael T X-ray patient restraint

Also Published As

Publication number Publication date
DE212007000040U1 (en) 2009-01-08
SE0601451L (en) 2008-01-05

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