EP2114338A1 - Kopfstützenanordnung - Google Patents
KopfstützenanordnungInfo
- Publication number
- EP2114338A1 EP2114338A1 EP08708133A EP08708133A EP2114338A1 EP 2114338 A1 EP2114338 A1 EP 2114338A1 EP 08708133 A EP08708133 A EP 08708133A EP 08708133 A EP08708133 A EP 08708133A EP 2114338 A1 EP2114338 A1 EP 2114338A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- headrest
- degrees
- head
- claw
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
- A61G15/10—Parts, details or accessories
- A61G15/12—Rests specially adapted therefor, e.g. for the head or feet
- A61G15/125—Head-rests
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
- A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
- A61G13/1205—Rests specially adapted therefor; Arrangements of patient-supporting surfaces for specific parts of the body
- A61G13/121—Head or neck
Definitions
- the invention relates to a headrest assembly with a headrest for a medical chair.
- the head restraint assembly includes a head rest having a head rest surface disposed on a front side of the head rest and a bracket over which the head rest may be disposed on the treatment chair.
- the headrest assembly comprises a bearing arrangement arranged on the carrier with a first pivot bearing, via which the headrest is rotatably mounted relative to the carrier about at least one axis.
- Headrest arrangements are known from EP 0 701 806 A1, DE-C-469 771 and DE-B-12 27 189. Each of these documents describes that the headrest is mounted via a bearing arrangement on a support of the backrest of the treatment chair.
- the headrest is rotatable about a three-dimensional axis about a three-dimensional axis via a ball joint and is pivotably mounted via a further, essentially horizontally extending axis.
- a headrest is disclosed, which is pivotable about two parallel in a shell part and designed as a pivot joints hinge pin about two parallel and substantially horizontally extending axes.
- This headrest is furthermore rotatable about one axis above this shell arrangement via three rotary joints, these three axes are arranged at right angles to each other and intersect at a point.
- a headrest which is pivotable about three parallel and substantially horizontally extending axes as well as a respective axis arranged at right angles to the three axes.
- the object of the invention is to design and arrange a head restraint assembly such that the head restraint can be adjusted manually and at the same time precisely, but also quickly, and an optimal head movement of the standard patient is ensured during the adjustment.
- the axis X is arranged relative to the head support surface at a distance Ax in the region of the front in front of the head support surface.
- the distance Ax of the axis X relative to the head support surface has a dimension between 10 mm and 200 mm, in particular between 25 mm and 85 mm. Depending on the size of the standard patient different dimensions are advantageous.
- the first pivot bearing about the axis X has a radius Rx between 25 mm and 200 mm, in particular between 105 mm and 110 mm and larger as the distance of the axis X has.
- Rx between 25 mm and 200 mm, in particular between 105 mm and 110 mm and larger as the distance of the axis X has.
- a shape design of the housing and the headrest is possible when an upstream axis X is realized.
- the bearing arrangement comprises a second pivot bearing, via which the headrest is rotatably mounted relative to the carrier about an axis Y, wherein the axis Y intersects the axis X at an intersection Pyx and at an angle Wxy is arranged to the axis X, the point Pyx is arranged relative to the head support surface with the distance Ax in front of the front of the headrest and the distance Ax relative to the head support surface a measure between 10 mm and 200 mm, in particular between 25 mm and 85 mm having.
- the advantageous ergonomics is not impaired, but further increased, since the standard patient head is also performed precisely with respect to the axis Y.
- the headrest is pivotable about the bearing assembly relative to the carrier at least about an axis Z, wherein the axis Z intersects the axis Y and is arranged at an angle Wyz to the axis Y.
- the kinematics is extended by the angle Wxy and / or the angle Wyz having a dimension between 0 degrees and 90 degrees. Preferably, angles of 90 degrees are realized.
- the bearing arrangement has at least one adjusting device, via which the headrest in a circumferential direction about at least one of the axes X, Y or Z is releasable and fixable. - A -
- the headrest is continuously and / or gradually releasably and fixable via the adjusting device.
- the first pivot bearing for the pivotable mounting of the headrest about the axis X is formed at least in two parts with a curved or circular guideway and a slide slidably mounted on the guide track.
- the guideway is secured relative to the carriage at least in a direction of the axis Y against displacement via a stop.
- the guideway or the carriage is arranged on the headrest or on the carrier.
- the second pivot bearing for the pivotal mounting of the headrest about the axis Y on the guide track or on the carriage is arranged and has a coaxial or parallel to the axis Y arranged pin and a rotatably mounted on the pin receptacle.
- the headrest on its front side has a head rest area limited by the head support surface and an at least indirectly adjacent to the head rest housing, wherein the housing is arranged with respect to the head rest opposite the Kopfauflage- surface on a back of the headrest.
- the headrest is mounted on the housing or a connecting element to the bearing assembly.
- the adjusting device has a first latching device and via the first latching device a stepwise adjustment and fixation of the headrest at least about the axis X at intervals between 1 degree and 10 degrees, in particular between 2.5 degrees and 3.5 degrees can be achieved.
- the first latching device has a plurality of locking elements arranged at a distance from each other and a claw engaging in the latching elements, wherein the latching elements directly or indirectly on the guideway or on the carriage and the claw on the middle or directly on the carriage or is arranged on the guideway.
- the claw is mounted pivotably about the axis Z on the receptacle.
- the adjusting device has a second locking device and the second locking device stepwise adjustment and fixation of the headrest at least about the axis Y at intervals between 1 degree and 10 degrees, in particular between 2.5 degrees and 3, 5 degrees is achievable.
- the second latching device has a plurality of spaced-apart holding elements and an engaging in the holding elements anchor, the holding elements medium or directly on the guideway or on the carriage and the armature middle or arranged directly on the recording is.
- the armature is mounted pivotably about the axis Z on the receptacle.
- the claw and / or the armature in the circumferential direction about the axis Z by means of a spring element arranged on the receptacle are biased in the same direction or in opposite directions.
- the spring element is designed as a spiral spring, is arranged coaxially to the axis Z on the receptacle and rests in the circumferential direction about the axis Z on the jaw and / or on the armature.
- the adjusting device prefferably has at least one operating element for opening and closing the claw and / or the armature associated with the first locking device and / or the second locking device.
- the operating element has at least one first operating lever and the first operating lever is mounted pivotably on the inside of the housing on the housing about a pivot axis arranged at right angles to the axis Y.
- the housing has at least one first recess, in which a handle part is arranged.
- the operating lever has a with respect to the pivot axis arranged opposite to the handle part head part and the handle part about the pivot axis and manually to the claw and / or to the anchor can be applied manually. It is particularly advantageous that the claw and / or the armature are pivotable about the head Y in the circumferential direction about the axis Y.
- the operating element has a second operating lever with a handle part and a head part, which is mounted on the housing so as to be manually pivotable about a second pivot axis and via which the claw and / or the armature can be pivoted about the axis Z in the same effect as with the first operating lever.
- the redundancy is increased by the fact that the first pivot bearing and the second pivot bearing in the direction of the axis Z between the two operating levers are arranged and the claw and / or the armature can be pivoted redundantly on the two control levers.
- the bearing arrangement has a third pivot bearing for the pivotable mounting of the headrest about the axis Z, wherein the third pivot bearing is formed as a sliding bearing and disposed between the carrier and the first pivot bearing.
- the headrest In terms of ergonomics, it is advantageous for the headrest to be pivotable about its axis X in an angular range Wx between 20 degrees and 100 degrees, in particular between 46 degrees and 50 degrees, about the axis X and pivotable about the bearing arrangement.
- the headrest is mounted in its pivoting range about the axis Y in an angular range Wy between 15 degrees and 80 degrees, in particular between 34 degrees and 38 degrees about the axis Y pivotable about the bearing assembly.
- axis X runs approximately parallel to the cervical spine of a standard patient positionable with the head on the headrest.
- the axis Y be approximately parallel to a line leading from the upper cervical vertebra through the tip of the nose relative to a standard patient positionable with the head on the headrest.
- FIG. 1 shows a treatment chair with a headrest assembly as part of an instrument unit.
- Figure 2 is a schematic diagram of the adjustment of the headrest with respect to the axes X, Y and Z;
- 3a is a schematic diagram of the headrest from above with respect to the axis X in the zero position;
- FIG. 3b shows a schematic diagram according to FIG. 3a with respect to the axis X about the angular range Wx;
- 4a is a schematic diagram of the headrest from the rear with respect to the axis Y in the zero position
- FIG. 4b shows a schematic diagram according to FIG. 4a with respect to the axis X about the angular range Wx;
- FIG. 5 is a schematic diagram of the headrest and the bearing assembly from above.
- Fig. 6 is a schematic diagram of the superimposed rotary mechanisms with the claw and with the anchor;
- FIG. 7a is a schematic diagram of a first detent device unlocked by a head part
- FIG. 7b shows a schematic diagram according to FIG. 7a of the locked first latching device
- FIG. 8a is a schematic diagram of an unlocked by a head part second locking device
- FIG. 8b shows a schematic diagram according to FIG. 8a of the locked second latching device
- FIG. 9 shows a perspective view of a bearing arrangement with a first pivot bearing for pivoting about the axis X;
- FIG. 10 shows a perspective view according to FIG. 9 in detail
- Figure 11 is a perspective view of a bearing assembly with a second pivot bearing for pivoting about the axis Y;
- FIG. 12 shows a perspective view according to FIG. 11 in detail
- Fig. 13 is a perspective view of the headrest with carrier from above;
- Fig. 14 is a perspective view of the headrest from the side.
- FIG. 1 shows a dental treatment unit which has an instrument unit 6 and a treatment chair 2 and a head restraint arrangement 1 provided on the treatment chair 2.
- the instrument unit 6 consists of a tray 60, which is held by a support arm 601.
- the tray 60 serves as a shelf for treatment cutlery, treatment material and also for receiving dental hand instruments 61, 61 '.
- the hand instruments 61, 61 ' are supplied via electrical, pneumatic or hydraulic lines 602.
- a lamp 62 is assigned to the treatment chair 2 immediately adjacent to a monitor 63.
- the treatment chair 2 has a backrest 20 and a seat part 21, which is mounted on a foot 23 via a height adjustment 24.
- a footrest 22 is arranged on the seat part 21.
- the treatment chair 2, the Abla ge 60, the monitor 63 and the lamp 62 are controllable via a foot pedal 64, to which they are connected via supply and data lines 65.
- a Kopf 1 is attached via a support 3, which includes a headrest 5 and a bearing assembly 4.
- the principles of operation of the bearing assembly 4 are shown in more detail in FIGS. 2 to 6 and described below.
- the headrest 5 has, as shown in FIGS. 13 and 14, a housing 51 on its rear side 54 and a head rest 52 with a head rest surface 50 on its front side 53.
- the bearing assembly 4 is partially disposed below the housing 51 and partially under a cover 31 of the carrier 3 and shown in more detail in Figs. 9 to 12.
- the bearing assembly 4 is designed with respect to three spatial axes X, Y and Z, which are each arranged at right angles to each other in these embodiments. A non-rectangular arrangement is provided in an embodiment not shown.
- the axis X extends substantially in the vertical direction parallel to the head support surface 50.
- the axis Y extends substantially in the horizontal direction at right angles to
- the axis Z also runs essentially in the horizontal direction and at right angles to the axis Y. Furthermore, the axis Z intersects the axis Y behind the head support surface 50 in the region of the carrier 3.
- the rotation about the axis X corresponds to the rotation of the head of a standard patient to the left and to the right when the axis X passes through the upper cervical vertebra.
- the rotation about the axis Y corresponds to the lateral tilting of the head of the standard patient towards the shoulders.
- the axis X arranged at right angles to the axis Y encloses with this an angle Wxy of 90 degrees and, when the backrest 20 is in an upright position, extends essentially vertically.
- the axis X is arranged according to the invention with a distance Ax to the headrest 5 or to the head support surface 50.
- the headrest 5 is displaced relative to the carrier 3 in a circular path.
- the circular path has a radius Rx whose center is the axis X.
- the headrest 5 pivots approximately at a point which lies in the region of the vertebral column or cervical vertebra of a standard patient who is placed on the treatment chair 2 and applies his back of the head to the headrest surface 50. This ensures that the natural rotational movement of the standard patient can be modeled ergonomically precise.
- Fig. 3a the headrest 5 is shown in relation to the pivoting about the axis X in a zero position.
- the headrest 5 is pivoted about an angular range Wx about the axis X.
- the axis Y passes through the headrest 5 in a substantially horizontal direction.
- the mounting according to the invention of the headrest 5 also permits rotation about the axis Y simultaneously about rotation about the axis X.
- the headrest 5 is facing the rotation with respect to its rear side 54 the axis Y is shown in a zero position.
- the headrest 5 is shown rotated by an angular range Wy in a clockwise direction relative to the zero position.
- a rotation of the headrest 5 about the axis Z is provided in the schematic diagram of FIG. In the exemplary embodiments according to FIGS. 3 a to 14, a mounting of the headrest 5 about the axis Z is not provided.
- Fig. 5 shows a schematic diagram of the bearing assembly 4 of the headrest 5 about the axis X and about the axis Y.
- the bearing arrangement 4 has a first pivot bearing 41 with a guideway 410 and a slide 411.
- the guide track 410 is mounted on the carrier 3 as shown in detail in FIGS. 9 and 10.
- On this concentric with the axis X arranged guide track 410 of the carriage 411 is slidably mounted, so that the carriage 411 also moves in a part-circular path about the axis X.
- the carriage 411 is attached indirectly via a second pivot bearing 42 on the housing 51, so that with the carriage 411, the entire headrest 5 with the head rest 52 on the carriage 411 is partially circular about the axis X movable.
- the second pivot bearing 42 with which the headrest 5 is rotatable about the axis Y, has a pin 420 and a receptacle 421 rotatably mounted on the pin 420.
- the pin 420 is mounted directly on the carriage 411.
- the housing 51 On the receptacle 421, the housing 51 is fixed.
- the housing 51 can be rotated about the receptacle 421 about the axis Y and simultaneously about the carriage 411 about the axis X.
- the pin 420 and thus the axis Y pivot with the carriage 411 about the axis X.
- this bearing assembly 4 it is possible, the headrest 5 about the axis X. to pivot in an angular range Wx of ⁇ 24 degrees with respect to the zero position.
- the angular range Wy is limited to ⁇ 18 degrees in this embodiment.
- the pivot radius Rx corresponds to the distance between the axis X and the guide track 410 of the carriage 411 and is in this embodiment 107.5 mm.
- the distance Ax between the head support surface 50 and the axis X corresponds due to the structure of the headrest 5 a fraction of the radius Rx. The movement of the headrest 5 about the axis X and around the
- Y axis is controlled by an adjusting device 40, which allows a screened adjustment in steps of about 3 degrees.
- a first latching device 45 is provided, which regulates the adjustment about the axis X, and a second latching device 46, which regulates the adjustment about the axis Y.
- the first latching device 45 has a plurality of latching elements 450, which are arranged directly on the guide track 410.
- this locking elements 450 engages a claw 451, which is pivotally mounted on the carriage 411.
- the claw 451 is mounted from a position engaging in the latching elements 450 in a position releasing the latching elements 450 about the axis Z on the receptacle 421.
- Fig. 7a and 7b the operation is shown in principle.
- the locking elements 450 are statically supported on the carrier 3 via the guide track 410.
- the claw 451 pivots counterclockwise from the free or open position according to FIG. 7a into a locked or closed position according to FIG. 7b.
- the claw 451 is biased by a spring element 43 in the circumferential direction about the axis Z in the counterclockwise direction, so that the spring element 43rd in the open position of the claw 451 exerts more force than in the closed position.
- the closed position is the decisive factor for the security against a loosening of the headrest 5.
- the second latching device 46 as shown in detail in FIGS. 9 and 10, has a plurality of holding elements 460 which are arranged directly on the inside of the housing 51. In these holding elements 460 engages an armature 461, which is pivotally mounted on the receptacle 421.
- the anchor 461 is mounted on the receptacle 421 about the axis Z from a position latching into the retaining elements 460 into a position releasing the retaining elements 460.
- Fig. 8a and 8b show the operation in principle.
- the holding elements 460 are arranged on the housing 51, which moves with the carriage 411 about the axis X.
- the armature 461 pivots from the open position shown in FIG. 8a in a clockwise direction in a closed position shown in FIG. 8b.
- the armature 461 is biased by the spring element 43 in the circumferential direction about the axis Z in a clockwise direction, so that the anchor 461 strives for the closed position by the spring element 43, which in turn is decisive for the safety of the locking.
- Fig. 6 illustrates in two-dimensional view the above-described kinematic conditions.
- the pin 420 rotates in a part-circular path about the axis X of radius Rx.
- the claw 451 and the armature 461 are rotatably mounted about the axis Z.
- the claw 451 engages in the latching elements 450 and the armature 461 engages in the retaining elements 460 on the housing 51.
- the claw 451 and the armature 461 are used to adjust the headrest 5 about the axis X and simultaneously about the axis Y. as shown in Fig. 9 to 12 shown pressed against an operating element 47 against its spring bias in the open position.
- the spring element 43 is formed as a spiral spring, mounted on a bolt 44 coaxial with the axis of rotation of the claw 451 and coaxial with the axis of rotation of the armature 461 and biased against these two components.
- the operating element 47 has a first operating lever 470 mounted in the housing 51 about a first pivot axis 472.
- the operating lever 470 is manually pivotable about the first pivot axis 472 via a grip part 471 and rests on the claw 451 and on the armature 461 with a head part 473 arranged with respect to the pivot axis 472 opposite the grip part 471.
- the operating lever 470 is thus biased by the spring element 43 indirectly via the claw 451 and the armature 461.
- the grip part 471 is arranged in a first recess 510 in the housing 51 and can be pressed manually from the rear side 54 in the direction of the interior of the housing 51.
- the head part 473 is moved in the direction of the axis Y onto the receptacle 421, which leads to an opening of the latching by the pivoting of the claw 451 and of the armature 461.
- the adjusting device 40 can be operated redundantly via a second operating lever 474.
- the second operating lever 474 is formed similar to the first operating lever 470 and disposed opposite to the receptacle 421 opposite in the housing 51.
- the second operating lever 474 is about a parallel to the first pivot axis 472 also with respect to the receptacle 421 oppositely disposed second pivot axis 475th pivoted.
- a gripping part 471 ' is arranged in a second recess 511 lying opposite the carrier 3 of the first recess 510.
- a head portion 473 'of the second operating lever 474 also rests on the claw 451 and the armature 461.
- the principle of operation of the two operating levers 470, 474 is the same.
- the headrest 5 can be redundantly adjusted on both sides of the back 54 and solve and set.
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007006045A DE102007006045B4 (de) | 2007-02-02 | 2007-02-02 | Kopfstützenanordnung |
| PCT/EP2008/050791 WO2008092792A1 (de) | 2007-02-02 | 2008-01-24 | Kopfstützenanordnung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2114338A1 true EP2114338A1 (de) | 2009-11-11 |
| EP2114338B1 EP2114338B1 (de) | 2015-07-29 |
Family
ID=39226676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08708133.7A Not-in-force EP2114338B1 (de) | 2007-02-02 | 2008-01-24 | Kopfstützenanordnung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2114338B1 (de) |
| DE (1) | DE102007006045B4 (de) |
| ES (1) | ES2549119T3 (de) |
| WO (1) | WO2008092792A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE469771C (de) | 1928-12-21 | Beldam Werke | Kopfstuetzenhalter fuer Operationsstuehle, Friseurstuehle u. dgl. | |
| FR451582A (fr) * | 1912-01-22 | 1913-04-22 | Chirurgie Industrie G M B H | Table d'opération ou analogue |
| US1257427A (en) * | 1915-09-30 | 1918-02-26 | John L Underwood | Head-rest. |
| US3188079A (en) * | 1962-04-05 | 1965-06-08 | American Sterilizer Co | Surgical headrest |
| FR1334460A (fr) | 1962-06-27 | 1963-08-09 | Perfectionnements aux repose-tête adaptables sur des fauteuils ou autres dispositifs utilisés, en particulier, dans l'art dentaire, médical ou chirurgical | |
| US3572835A (en) * | 1968-10-23 | 1971-03-30 | Kees Surgical Specialty Co | Surgical head rest |
| US3719388A (en) * | 1971-05-12 | 1973-03-06 | Den Tal Ez Mfg Co | Adjustable headrest assembly for a dental chair |
| US3761128A (en) * | 1972-09-11 | 1973-09-25 | American Optical Corp | Headrest for an ophthalmic chair or the like |
| DE3116208C2 (de) * | 1981-04-23 | 1985-10-03 | Kabushiki Kaisha Morita Seisakusho, Kyoto | Vorrichtung zum Steuern der Schwenkbewegung einer Kopfstütze |
| DE9116002U1 (de) * | 1991-12-23 | 1992-02-27 | GPA Gesellschaft für Prozeß-Automation GmbH, 2000 Hamburg | Kopfstütze für einen Operationstisch, Operationsstuhl o.dgl. |
| IT232067Y1 (it) | 1994-09-15 | 1999-08-16 | Stern Weber Srl | Poggiatesta perfezionato, in particolare per poltrone per uso odontoiatrico |
-
2007
- 2007-02-02 DE DE102007006045A patent/DE102007006045B4/de not_active Expired - Fee Related
-
2008
- 2008-01-24 WO PCT/EP2008/050791 patent/WO2008092792A1/de not_active Ceased
- 2008-01-24 ES ES08708133.7T patent/ES2549119T3/es active Active
- 2008-01-24 EP EP08708133.7A patent/EP2114338B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008092792A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2549119T3 (es) | 2015-10-23 |
| EP2114338B1 (de) | 2015-07-29 |
| WO2008092792A1 (de) | 2008-08-07 |
| DE102007006045B4 (de) | 2009-02-12 |
| DE102007006045A1 (de) | 2008-08-07 |
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Inventor name: RIES, ANDREAS Inventor name: MUELLER, DIETER Inventor name: RICHTER, TORSTEN Inventor name: FORNOFF, DIETER Inventor name: ECKHARD, HANS-ULRICH Inventor name: LEHMANN, KARL-HEINZ Inventor name: ENGELHARDT, ROBERT |
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| DAX | Request for extension of the european patent (deleted) | ||
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: A61G 15/12 20060101AFI20130704BHEP Ipc: A61G 13/12 20060101ALN20130704BHEP |
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