CN104640530A - Guiding wheel for a hospital bed - Google Patents
Guiding wheel for a hospital bed Download PDFInfo
- Publication number
- CN104640530A CN104640530A CN201380048339.2A CN201380048339A CN104640530A CN 104640530 A CN104640530 A CN 104640530A CN 201380048339 A CN201380048339 A CN 201380048339A CN 104640530 A CN104640530 A CN 104640530A
- Authority
- CN
- China
- Prior art keywords
- propelling sheave
- equipment
- patient according
- utilizing
- transport patient
- 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
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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
- A61G1/00—Stretchers
- A61G1/02—Stretchers with wheels
- A61G1/0206—Stretchers with wheels characterised by the number of supporting wheels if stretcher is extended
- A61G1/0225—Stretchers with wheels characterised by the number of supporting wheels if stretcher is extended other configuration, e.g. odd number of wheels
-
- 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
- A61G1/00—Stretchers
- A61G1/02—Stretchers with wheels
- A61G1/025—Stretchers with wheels having auxiliary wheels, e.g. wheels not touching the ground in extended position
- A61G1/0268—Stretchers with wheels having auxiliary wheels, e.g. wheels not touching the ground in extended position having deployable or retractable wheels
-
- 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
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/08—Apparatus for transporting beds
Abstract
The hospital bed Q) comprises a guiding wheel (2) fixed to the chassis (3) of the bed (1) which can be moved between a storage and use position. The positioning of the guiding wheel (2) is achieved using a pedal (4), the activation of which results in the movement of a drawbar (5), which then acts on connection members comprising a cam (14), guiding member (15) and lever (17). In order to force the guiding wheel (2) against the surface a flexible member (10) is used which is connected to the frame of the bed at one end and to the profile (8) at the other end.
Description
Technical field
The present invention relates to a kind of propelling sheave, it makes to use the staff of hospital bed when sick bed is carried through hospital, carries out guiding become easier to sick bed.These propelling sheaves be called as attached take turns or also can be called as the 5th take turns.As a part for bed undercarriage, propelling sheave affects the operation of hospital bed.
Background technology
In the field of hospital bed, the 5th takes turns the general state representing prior art.By means of the 5th take turns functional, when sick bed is carried through hospital, they affect the operation carried out for whole hospital bed, and make the work of corpsman,hospital easier by this way.The transport situation of hospital bed is relevant with the ruuning situation of the moveable loaded article be arranged on four wheels, and this four wheels has two and rotates freely axle.First rotates freely axle makes wheel produce actual rotation, allows that this loaded article moves forward or backward relative to ground.Second rotating shaft of wheel is through to the underframe of this loaded article from the fixture of wheel, this rotational axis vertical in ground and allow wheel side direction rotate.In this structure of wheel, it is very difficult that a people operates sick bed, and staff must go before when cornering, turns to enable the sick bed with heavy load.As by the shopping cart of routine, people can see same problem.
This problem can be solved by two kinds of modes.The first probability is the second rotating shaft pinning of two trailing wheels by being positioned at the side of transmitting the thrust had from staff.The method of two wheels one side lock is well known in the prior art.There is the sick bed entering line-locked wheel by this way more easily operate.
The another kind of mode solving this technical problem takes turns the 5th to be added on underframe, and the 5th takes turns the centre being roughly positioned at this underframe, and two to basis wheel between.
So the 5th takes turns the centre that is located in underframe and produces rotating shaft.In some solution, these wheels also comprise the driver with power set, in order to save the work of staff.
In fact, these two kinds of methods are all designed to usually, and this rotating shaft temporarily set up can easily be removed.If we do not need transport sick bed at a distance and only operate among a small circle, this is necessary in practical operation.Start with thus, apparent aforesaid technical scheme must comprise two states: the state that the interim rotating shaft for sick bed is set up and sick bed do not have the state of this axle.
Take turns with regard to the 5th, have several different technical scheme to describe the control mode that the 5th takes turns the use location from upper position to bottom, wherein on the position on top, this is taken turns and is in storage location, and on the use location of bottom, this is taken turns and contacts with ground.The movement of this wheel can be realized with Electronic Control by additional driver, in order to make wheel decline, or manually operates, and usually has in this case and power is reached from pedal the suitable transmission that the 5th slide mechanism of taking turns carries out.Patent US5987671 shows a kind of method.This documents describes and take turns the 5th the machinery being displaced to lower position, employing pedal assembly, this pedal assembly employs longitudinal bar, rod member and draw bar, and the power that pedal rotates converts this displacement taken turns to.
Utility model CZ17216 shows the another kind of 5th and takes turns.In this case, pedal, arm, press member and suitable spring of locating constitute the 5th wheel assembly.File US6772850 illustrates a kind of pattern, and wherein, the 5th movement taken turns is electrically controlled.
These technical schemes and other prior art shows the 5th and take turns had several shortcomings.This automatically controlled version makes the realization of whole function costly, and they are only incorporated into exercise with so entirely automatically controlled hospital bed and use.With regard to known technical scheme, another shortcoming is to be used for independent of study plot the main sick bed pedal braked sick bed.In addition, just in accordance with the solution of this situation, sick bed has been designed to cause the price of sick bed still very high because solution is complicated.
Summary of the invention
Embed bed undercarriage, eliminate above-mentioned problem to a great extent for the propelling sheave controlled by pedal of hospital bed.Pedal is connected with propelling sheave by the parts that draw bar is relevant with other, comprises rod member, cam and guiding part.Cam is connected with draw bar, and guiding part is connected with rod member.In the embodiment of alternative, cam can be connected with rod member, and guiding part can be connected with draw bar.
This rod member is also connected with profiled member, and this profiled member is connected with propelling sheave.
The present invention can also have additional compliant member, and it is supplied between propelling sheave with ground and contacts better.This compliant member can be have the bar of given shape, spring or torsion spring.
Accompanying drawing explanation
Fig. 1 shows has underframe and the 5th hospital bed of taking turns.Fig. 2 shows the cross section of the brake component assembly of hospital bed.Fig. 3 shows to be had the 5th of lever, guiding part and cam and takes turns.Fig. 4 shows the detailed view being loaded on the left part fixture that the 5th of underframe is taken turns.Fig. 5 shows the detailed view being loaded on the right part fixture that the 5th of underframe is taken turns.Fig. 6 shows the detail drawing of the parts with cam, and this cam is connected with draw bar.Fig. 7 shows the detail drawing of the parts with guiding part, and this guiding part is connected with draw bar.
Detailed description of the invention
Fig. 1 shows has according to of the present invention the hospital bed 1 that 5th takes turns 2, wherein the 5th takes turns 2 and is connected with the underframe 3 of hospital bed 1.A part for underframe 3 is still for controlling the pedal 4 of brake component.Hospital bed 1 uses the brake component being integrated in wheel assembly to brake.The actual brake component of the underframe 3 of hospital bed 1 is well known in the prior art.The brake component of underframe 3 head is connected by hex nut, identical with the connected mode of the brake component of underframe 3 leg.Being coupled together by the draw bar 5 running through underframe 3 with the brake component of leg of head.Fig. 2 shows this layout.Therefore, the whole brake component assembly of hospital bed 1 carries out work in interconnective mode, and that is after applying a brake component of underframe 3, the remaining brake component of hospital bed 1 is automatically applied.The rotary motion of the hex nut produced by the motion of pedal 4 is converted into the rectilinear motion of draw bar 5.At the other end of underframe 3, which results in rotation and the application undertaken by this hex nut of residue two brake components of second hex nut.
Fig. 3 shows the 5th and takes turns the connection that the assembly of 2 and the framework of it and hospital bed 1 carry out, and this connection is roughly positioned at the position in the middle of underframe 3.Keeper 6 and keeper 7 serve as the assembly of to take turns 2 by the 5th and are fixed to framework.Keeper 6 and keeper 7 are firmly fixed at underframe 3 by bolt, and as taking turns the supporting of other parts of 2 for the 5th.Keeper 6 form definite with keeper 7 is different from each other, and that is, the keeper 6 being functionally positioned at hospital bed side is different from keeper 7.Can obviously find out in the description being connected to hereinafter of keeper 6 and the exact function both keeper 7 and they and other parts of mechanism.Used 5th takes turns 2 is fixed securely with the profiled member 8 of hollow, and this profiled member establishes the connection of the framework through underframe 3, and wherein keeper 6 and keeper 7 are that profiled member can rotate freely in keeper 6 and keeper 7 with the fixed form of underframe 3.Employ profiled member 8 and the 5th and take turns 2 modes be fixedly connected with, the rotation of profiled member 8 makes wheel move relative to ground.Profiled member 8 is formed at cast, cell type section or other suitable shapes.Therefore, the 5th take turns 2 and can move between the two positions.On first position that can be called as storage location, the 5th takes turns 2 is positioned at position away from ground, therefore the 5th takes turns not contact between 2 and ground.Be positioned on this storage location if the 5th takes turns 2, hospital bed does not just have the auxiliary point of rotation in the centre position of underframe 3, but sick bed can move freely.This storage location is favourable place, such as, if staff needs to side mobile hospital sick bed 1.
By the rotation of profiled member 8 cause the 5th to take turns use location that 2 are reduced to bottom, the 5th takes turns 2 is fixed securely with this profiled member.After profiled member 8 rotates, the 5th takes turns 2 is prompted to ground close, and establishes the auxiliary rotating shaft of hospital bed 1.In this position, by mechanism hereinafter described make making every effort to promote of changing the 5th take turns 2 close with ground.
On hospital bed, draw bar 5 runs through the side of underframe 3, has keeper 6, it constitutes the first supporting-point for profiled member 8, and this profiled member is arranged in the first back-up ring 11 at this.First back-up ring 1 is installed on keeper 6 regularly, and forms the supporting for profiled member 8.As can be obviously found out in Fig. 4, then support unit 9 inserts in keeper 6.Support unit 9 and keeper 6 are fixed securely, and this support unit comprises an opening, for inserting compliant member 10.
Fig. 5 shows the second keeper 7, and it is connected with the opposite side of the framework of underframe 3.Second keeper 7 comprises the second back-up ring 12.In this side, profiled member 8 is connected with compliant member 10 by linkage section 13.Linkage section 13 manufactures its gear shaping and the groove fit of profiled member 8, and linkage section 13 further comprises two grooves coordinated with compliant member 10.
Shown in Fig. 4 the 5th first end of taking turns the assembly of 2, compliant member 10 is fixed by the framework of keeper 6 relative to the underframe 3 of hospital bed 1.Shown in Fig. 5 the 5th second end of taking turns the assembly of 2, compliant member 10 is fixed in profiled member 8 by linkage section 13.The structure of compliant member 10 is, it can produce the rotation that moment causes profiled member 8, thus impels the 5th to take turns 2 to be close to ground.
Compliant member 10 comprises the solid bar of molding, and its rotation mode in profiled member 8 is, its produces moment and is used for rotating profiled member 8, and impels wheel 2 to go to ground.By using fixedly securing of compliant member and support unit 9 and fixedly securing at opposite side and linkage section 13, this rotatable state of compliant member maintenance.Therefore should be the rotatable bar of certain shape, there is the function of torsion spring.Torsion spring can be used in the embodiment of alternative to replace profiled member.Those of ordinary skill in the art obviously knows how to arrange such torsion spring, thus it can realize impelling the 5th to take turns 2 to the function of landing ground direction movement.In the embodiment of another alternative, can use conventional spring, its one end is connected with the appropriate location of the framework of underframe 3, and its other end and profiled member carry out 8 and be connected.
Fig. 3 shows and takes turns 2 to the 5th and provide power, and power is converted to the device of the rotation of profiled member 8.According to the present invention, the 5th takes turns 2 directly can be controlled by any braking footrest 4.This has been come by the 5th connection taken turns between 2 systems and draw bar 5, and this draw bar is advanced along the side of underframe 3.Connection illustrated in fig. 3 can be realized by various device.These connecting devices comprise cam 14, first guiding part 15, second guiding part 16 and rod member 17.Cam 14 and draw bar 5 are fixed securely, and after therefore any pedal is triggered with the direction that brake component locks, draw bar 5 and thus cam 14 are all shifted relative to guiding part 15.First guiding part 15 is connected with profiled member 8 securely by rod member 17.Guiding part is by rotating freely axle and to be connected with lever 17 thus it can rotating.In a preferred embodiment, pedal 4 can have three positions, and wherein first position is arranged for and brakes, and second position is used for brake component to unclamp, and the 3rd position takes turns 2 for triggering the 5th.
As what can see in Fig. 6, the shape of cam 14 is, when rod member 17 and cam 14 move towards each other, first guiding part 15 upwards rises relative to draw bar 5, this is because owing to rotating freely of the first guiding part 15, the first guiding part moves up along the groove of cam 14.Groove definite on cam 14 goes for the control of pedal 4 three positions, thus only has pedal 4 the 5th to take turns 2 and just move earthward under the pattern needed.Second guiding part 16 is positioned at the bottom of cam 14, prevents draw bar 5 along with cam 14 because resistance drops downwards, and this resistance produced by the system of rod member 17, profiled member 8 and compliant member 10.Second guiding part 16 is connected with keeper 6 by free rotating shaft, and this free rotating shaft allows that the second guiding part 16 can rotate when bearer cams 14, and guiding part carries out sliding and constitute the firm support for cam 14 along it.Usually, guiding part can be formed by roller, and this roller has groove or gear.Those of ordinary skill in the art can use any shape manufactured by the material of low friction performance, using as guiding part 16.The outward appearance of cam 14 and shape go for the change of these individualities.
Can obviously find out from the description that the present invention is above-mentioned, when pedal 4 moves, profiled member 8 rotates, therefore the 5th take turns 2 use with storage location between move.In addition, on the use location of bottom, compliant member 10 impels the 5th to take turns 2 downwards until ground, even if therefore in adverse conditions, also can realize the 5th and take turns the contact with ground, such as on irregular or easy slippery floor.
As what can see in Fig. 7, another preferred embodiment in, the position of cam 14 and the first guiding part 15 can be contrary.Have the first guiding part 15 rotating freely axle to be connected with draw bar 5, cam 14 can be firmly fixed at rod member 17.
In a preferred embodiment, whole mechanism, comprises draw bar 5, can be integrated in the framework of underframe 3, so just without the need to there being the second guiding part 16, because draw bar 5 can be supported in the framework of used underframe 3.
Claims (14)
1. the equipment (1) utilizing propelling sheave (2) to transport patient, described propelling sheave (2) can move between at least two positions, wherein on first position, propelling sheave (2) does not contact with ground, on second position, propelling sheave (2) contacts with ground, described equipment comprises underframe (3), at least one pedal (4), for by the Motion Transmission of pedal (4) to the draw bar (5) of rod member (17), described rod member (17) is connected with propelling sheave (2), it is characterized in that, described draw bar (5) is connected with connecting device, described connecting device comprises cam (14), guiding part (15) and for making the rod member (17) of propelling sheave (2) movement between at least two positions.
2. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, described cam (14) is connected with draw bar (5), and described guiding part (15) is connected with rod member (17).
3. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, described cam (14) is connected with rod member (17), and described guiding part (15) is connected with draw bar (5).
4. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, described guiding part (15) is roller.
5. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, described guiding part (15) is the reeded roller of tool.
6. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, described guiding part (15) is gear.
7. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, draw bar (5) mainly moves in the rectilinear direction of the equipment (1) for transporting patient.
8. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, described rod member (17) is connected securely with profiled member (8), and described profiled member is positioned at the horizontal direction of the underframe (3) of sick bed.
9. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 8, it is characterized in that, described profiled member (8) and described propelling sheave (2) are fixed securely.
10. the equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, described compliant member (10) forces propelling sheave (2) to be resisted against ground in the position of below.
11. equipment (1) utilizing propelling sheave (2) to transport patient according to claim 10, it is characterized in that, described compliant member (10) is shaped bar.
12. equipment (1) utilizing propelling sheave (2) to transport patient according to claim 10, it is characterized in that, described compliant member (10) is torsion spring.
13. equipment (1) utilizing propelling sheave (2) to transport patient according to claim 10, it is characterized in that, described compliant member (10) is conventional spring.
14. equipment (1) utilizing propelling sheave (2) to transport patient according to claim 1, it is characterized in that, one end of described compliant member (10) and the framework of underframe (3) are fixed securely, and the other end is fixed securely with the profiled member (8) transverse to underframe (3).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZ2012-638A CZ306244B6 (en) | 2012-09-14 | 2012-09-14 | Hospital bed guide roller |
| CZPV2012-638 | 2012-09-17 | ||
| PCT/CZ2013/000106 WO2014040578A1 (en) | 2012-09-14 | 2013-09-17 | Guiding wheel for a hospital bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104640530A true CN104640530A (en) | 2015-05-20 |
| CN104640530B CN104640530B (en) | 2017-08-11 |
Family
ID=49474179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380048339.2A Active CN104640530B (en) | 2012-09-14 | 2013-09-17 | Propelling sheave for hospital bed |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2895127B1 (en) |
| CN (1) | CN104640530B (en) |
| CZ (1) | CZ306244B6 (en) |
| ES (1) | ES2649164T3 (en) |
| PL (1) | PL2895127T3 (en) |
| WO (1) | WO2014040578A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110740720A (en) * | 2017-05-15 | 2020-01-31 | 亨特来夫工业技术有限公司 | Reversible lift spring for raising and lowering a standby wheel of a hospital bed |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107468432A (en) * | 2017-09-07 | 2017-12-15 | 刘路清 | A kind of medical multifunction push-cart |
| CN109106526B (en) * | 2018-07-17 | 2020-11-17 | 张永娟 | Medical sickbed |
| CN112914927A (en) * | 2021-03-18 | 2021-06-08 | 兰州市西固区人民医院 | Flat bed of lying is used to department of anesthesia |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5348326A (en) * | 1993-03-02 | 1994-09-20 | Hill-Rom Company, Inc. | Carrier with deployable center wheels |
| US5806111A (en) * | 1996-04-12 | 1998-09-15 | Hill-Rom, Inc. | Stretcher controls |
| CN2506241Y (en) * | 2001-09-30 | 2002-08-21 | 石家庄市满友医疗器械实业有限公司 | Run guiding device for medical vehicle and bed |
| US20030196268A1 (en) * | 2000-02-18 | 2003-10-23 | Heimbrock Richard H. | Imaging stretcher |
| CN2652106Y (en) * | 2003-10-23 | 2004-11-03 | 瓦房店市精量播种机制造有限公司 | Air suction type mulch covering precision planter |
| CN102119011A (en) * | 2008-06-13 | 2011-07-06 | 梅特罗工业有限公司 | Medical emergency crash cart |
| CN102481950A (en) * | 2009-06-17 | 2012-05-30 | 吉恩科技有限公司 | Steering assembly for a vehicle and method of operating the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6772850B1 (en) * | 2000-01-21 | 2004-08-10 | Stryker Corporation | Power assisted wheeled carriage |
| DE20107148U1 (en) * | 2001-04-26 | 2002-08-29 | Voelker Moebelproduktionsgmbh | Bed, in particular hospital or nursing bed |
| CZ17216U1 (en) * | 2006-11-09 | 2007-02-05 | Linet, Spol. S R. O. | Guide wheel assembly, especially for hospital bed |
-
2012
- 2012-09-14 CZ CZ2012-638A patent/CZ306244B6/en unknown
-
2013
- 2013-09-17 PL PL13780058T patent/PL2895127T3/en unknown
- 2013-09-17 EP EP13780058.7A patent/EP2895127B1/en active Active
- 2013-09-17 ES ES13780058.7T patent/ES2649164T3/en active Active
- 2013-09-17 WO PCT/CZ2013/000106 patent/WO2014040578A1/en active Application Filing
- 2013-09-17 CN CN201380048339.2A patent/CN104640530B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5348326A (en) * | 1993-03-02 | 1994-09-20 | Hill-Rom Company, Inc. | Carrier with deployable center wheels |
| US5806111A (en) * | 1996-04-12 | 1998-09-15 | Hill-Rom, Inc. | Stretcher controls |
| US20030196268A1 (en) * | 2000-02-18 | 2003-10-23 | Heimbrock Richard H. | Imaging stretcher |
| CN2506241Y (en) * | 2001-09-30 | 2002-08-21 | 石家庄市满友医疗器械实业有限公司 | Run guiding device for medical vehicle and bed |
| CN2652106Y (en) * | 2003-10-23 | 2004-11-03 | 瓦房店市精量播种机制造有限公司 | Air suction type mulch covering precision planter |
| CN102119011A (en) * | 2008-06-13 | 2011-07-06 | 梅特罗工业有限公司 | Medical emergency crash cart |
| CN102481950A (en) * | 2009-06-17 | 2012-05-30 | 吉恩科技有限公司 | Steering assembly for a vehicle and method of operating the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110740720A (en) * | 2017-05-15 | 2020-01-31 | 亨特来夫工业技术有限公司 | Reversible lift spring for raising and lowering a standby wheel of a hospital bed |
| CN110740720B (en) * | 2017-05-15 | 2021-04-09 | 亨特来夫工业技术有限公司 | Reversible lift spring for raising and lowering a standby wheel of a hospital bed |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2649164T3 (en) | 2018-01-10 |
| CZ2012638A3 (en) | 2014-03-26 |
| CZ306244B6 (en) | 2016-10-26 |
| PL2895127T3 (en) | 2018-06-29 |
| EP2895127B1 (en) | 2017-08-30 |
| EP2895127A1 (en) | 2015-07-22 |
| CN104640530B (en) | 2017-08-11 |
| WO2014040578A1 (en) | 2014-03-20 |
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