CN105596155A - Self-balancing stretcher - Google Patents
Self-balancing stretcher Download PDFInfo
- Publication number
- CN105596155A CN105596155A CN201510929503.1A CN201510929503A CN105596155A CN 105596155 A CN105596155 A CN 105596155A CN 201510929503 A CN201510929503 A CN 201510929503A CN 105596155 A CN105596155 A CN 105596155A
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- Prior art keywords
- stretcher
- self
- balancing
- skeleton
- rod
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- 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.)
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Classifications
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- 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
-
- 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
- A61G1/04—Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
-
- 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
- A61G2200/00—Information related to the kind of patient or his position
- A61G2200/30—Specific positions of the patient
- A61G2200/32—Specific positions of the patient lying
-
- 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
- A61G2203/00—General characteristics of devices
- A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
The invention discloses a self-balancing stretcher. The self-balancing stretcher comprises frameworks arranged on the two sides and stretcher cloth arranged between the two frameworks, and further comprises stretcher rods located above the outer sides of the two frameworks respectively. The length direction of each stretcher rod is parallel to the length direction of the corresponding framework. A loose mooring rope is connected between the two ends of every two corresponding stretcher rods, and the side wall of each framework is provided with at least two sliding blocks used for sliding in cooperation with the corresponding mooring rope and keeping themselves horizontal and stable. According to the self-balancing stretcher, the frameworks and the stretcher cloth are arranged on the mooring ropes in a sliding mode under cooperation of the sliding blocks and the mooring ropes, and after a patient lies on the stretcher cloth, under the gravity of the patient and the jolting influence in the transporting way, the stretcher cloth will slide on the mooring ropes under driving of the sliding blocks to find a balancing point automatically. The self-balancing stretcher can guarantee the comfort of the patient in the transporting way even under the condition of a poor traffic environment or a rugged road, and secondary injury is avoided; meanwhile, the burden of medical workers is relieved, and the efficiency of transporting the patient with the stretcher is improved.
Description
Technical field
The present invention relates to Medical Devices technical field, particularly a kind of Self-balancing stretcher.
Background technology
Along with the development of Chinese medical level, increasing Medical Devices are popularized.
Stretcher be the most common in Medical Devices be also the most general one, be mainly used in transporting sufferer or limbsThe patient of disability, generally comprises two stocks and middle load cloth. Wherein carry on a shoulder pole cloth generally by soft cottonBe made into, patient lies pleasant thereon, and stock is lifted and held for medical personnel.
Transporting in patient's way by stretcher, thereby keep the comfortable secondary injury of avoiding of patient body to beVery important. At present, in more flourishing Urban Areas, medical level is higher, and traffic environment is better,Road surface is also more smooth, and so common stretcher adds that emergency tender enough ensures demand. But, at somePlace after remote mountain areas or generation natural calamity, transporting of patient can only rely on stretcher, and thisTraffic environment under particular surroundings is often very severe, and road is mostly rugged and rough, is often attended by slope roadSection, the medical personnel that carry a stretcher need to grasp the balance of stretcher at any time in order to avoid patient is fallen out, not only transportEfficiency is low, and medical personnel are also very tired.
Therefore, how, in or the rugged situation of road severe at traffic environment, ensure stretcher transport diseaseHuman efficiency, alleviates medical personnel's burden, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
The object of this invention is to provide a kind of Self-balancing stretcher, in the time that medical personnel transport patient, can makePatient's health keeps balance automatically on stretcher, avoids being fallen out, and reduces medical personnel's burden.
For solving the problems of the technologies described above, the invention provides a kind of Self-balancing stretcher, comprise and be arranged at both sidesSkeleton and be arranged at the load cloth between skeleton described in two, also comprise lay respectively at two described on the outer skew back of skeletonThe stretcher rod of side, described in two, the length direction of stretcher rod is all parallel to the length direction of described skeleton; Each instituteState and between the both ends on stretcher rod, be connected with lax hawser, and be provided with on the sidewall of each described skeletonAt least two for coordinating and slide and ensure the slide block that own level is stable with described hawser.
Preferably, each described skeleton comprises at least two longitudinal rods and the horizontal stroke that arrange along stretcher length directionTo the bracing piece being arranged between adjacent two described longitudinal rods.
Preferably, described slide block is arranged on the sidewall of outermost described longitudinal rod, and described slide blockTop flushes with the top of described longitudinal rod.
Preferably, on the sidewall of outermost described longitudinal rod, be provided with two described slide blocks, and difference positionIn its position, both ends.
Preferably, described slide block comprises and is U-shaped box-like closed housing and is built in described closed housing and with describedThe fixed pulley that hawser coordinates, and on the two side of described closed housing, be provided with for passing for described hawserThrough hole.
Preferably, also comprise the go-cart that is arranged at bottom, described go-cart comprises loading plate and is vertically installed inMultiple support bars on described loading plate, and the top of each described support bar respectively with each described stretcher rod phaseConnect; The bottom of described loading plate is provided with multiple rollers.
Preferably, the top of each described support bar all removably connects with each described stretcher rod.
Preferably, the end of each described stretcher rod is provided with the handle of being convenient to fingertip grasp.
Preferably, being circumferentially provided with many and surrounding so that the railing of storing along described loading plate.
Preferably, each described roller is high pin universal wheel.
Self-balancing stretcher provided by the present invention, comprises and is arranged on the skeleton of two side positions and is arranged on two bonesLoad cloth between frame, and lay respectively at the stretcher rod of the outside oblique upper of two skeletons and two loadsThe length direction of hack lever is all parallel to the length direction of skeleton. Between both ends on each stretcher rod, connectBe connected to lax hawser, and on the sidewall of each skeleton, be provided with at least two for coordinate with hawser slip,And ensure the slide block that own level is stable. Self-balancing stretcher provided by the present invention, due to two stretcher rodsBe separately positioned on the outside oblique upper of skeleton, and between both ends on each stretcher rod, be connected with laxHawser, therefore under nature, hawser is natural torsion under the both sides of skeleton, stretcher rodArc. On the sidewall of skeleton, be provided with slide block, this slide block can coordinate slip with hawser, therefore simultaneouslyBy coordinating of multiple slide blocks and hawser, skeleton and load cloth can be set on hawser slidably, so,In the time that patient lies down on load cloth, at patient's self gravitation and transport jolting under impact in way, patient,Skeleton and load cloth will slide under the drive of slide block on hawser, automatic alignment quasi-equilibrium point. Certainly, for keeping awayExempt from the moment of torsion that overturns, each slide position being arranged on skeleton relatively disperses, and in sliding, can also protectCard patient's horizontal stable. Therefore, Self-balancing stretcher provided by the present invention, by the slide block on skeletonWith coordinating of hawser on stretcher rod, while making patient lie on load cloth, even at traffic environment severe orIn the rugged situation of road, also can utilize the gravity of self automatically to slide into equilbrium position, ensurePatient in the comfortableness of transporting in way, avoid causing secondary injury, simultaneously also alleviated medical personnel'sBurden, has improved and has utilized stretcher transport disease human efficiency.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will be to realityThe accompanying drawing of executing required use in example or description of the Prior Art is briefly described, apparently, belowAccompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, notPay under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the overall structure schematic diagram of the first detailed description of the invention provided by the present invention;
Fig. 2 is the concrete structure schematic diagram of the skeleton shown in Fig. 1;
Fig. 3 is the overall structure schematic diagram of the second detailed description of the invention provided by the present invention;
Fig. 4 is the partial structurtes schematic diagram that the support bar shown in Fig. 3 is connected with stretcher rod.
Wherein, in Fig. 1-Fig. 4:
Skeleton-1, longitudinal rod-101, bracing piece-102, stretcher rod-2, hawser-3, slide block-4,Go-cart-5, loading plate-501, support bar-502, roller-503, railing-504, handle-6.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried outDescribe clearly and completely, obviously, described embodiment is only the present invention's part embodiment, andNot whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not doingGo out the every other embodiment obtaining under creative work prerequisite, all belong to the scope of protection of the invention.
Please refer to Fig. 1, Fig. 1 is the overall structure signal of the first detailed description of the invention provided by the present inventionFigure.
In the first detailed description of the invention provided by the present invention, Self-balancing stretcher mainly comprise skeleton 1,Load cloth, stretcher rod 2, hawser 3 and slide block 4 etc.
Wherein, the rigid element that skeleton 1 is stretcher, is arranged on two side positions of stretcher entirety, has ensured loadThe intensity of frame. Between two skeletons 1, be provided with load cloth, it is solid that this load cloth is generally canvas or cotton etc.Cloth, material softness, is applicable to patient bed.
Stretcher rod 2 operated by rotary motion have two, lay respectively at the outside oblique upper of two skeletons 1, such as being positioned at15 ° of angles of outside oblique upper of skeleton 1, difference in height is apart from being the positions such as 10cm, both are not directly connected, andAnd the length direction of two stretcher rods 2 is all antiparallel with the length of skeleton 1, be mainly used in for medical personnelLift and hold. Hawser 3 is arranged on stretcher rod 2, and operated by rotary motion is in the position, both ends of stretcher rod 2, important, hawser 3 relaxes, i.e. non-tighten and in relaxation state, and so under nature, hawser3 will hang down naturally due to the impact of self gravitation, be arch, and because stretcher rod 2 is positioned at skeleton 1Oblique upper, does not interfere with skeleton 1 or load cloth when therefore hawser 3 hangs down.
Slide block 4 is arranged on the sidewall of skeleton 1, and is at least provided with two, such as two, 4 or moreWait all can more, be mainly used in matching with hawser 3 and slide thereon. Because slide block 4 is fixing with skeleton 1, because ofWhen this slide block 4 slides on hawser 3, must drive skeleton 1 and load cloth to be synchronized with the movement. And in order to ensure slide block4 in the time sliding, and skeleton 1, load cloth and the patient who lies on load cloth can not overturn by horizontal stable, multiple cunningsPiece 4 also needs to ensure the horizontal stable of skeleton 1. When being provided with two slide blocks 4 on skeleton 1, can be by twoIndividual slide block 4 is separately positioned on the end positions of skeleton 1, makes the patient head and the tail two ends of center of gravity in the middle of load clothThere is not turning torque, stress balance in vertical direction.
So, in the time using Self-balancing stretcher provided by the present invention to transport patient, patient lies on load cloth,By the slip on the lax hawser 3 hanging down on stretcher rod 2 of the multiple slide blocks 4 on two skeletons 1, utilizePatient's self gravity and transport way in the impact of jolting, automatic alignment quasi-equilibrium point in sliding process.Transport in process whole, although patient is carrying on a shoulder pole on cloth always along with skeleton 1 front and back (simultaneous is upper and lower)Slippage, but motion state is translation all the time, and patient is balance in the horizontal direction all the time, therefore alsoBe not subject to secondary injury, on the contrary because the sliding action of skeleton 1 has cushioned the impact of rugged bottom surface to stretcherPower, has protected patient avoid vibration and jolt. Therefore, Self-balancing stretcher provided by the present invention, canUtilize patient's self gravity to slide on hawser, ensured that patient, in the comfortableness of transporting in way, avoidsSecondary injury, simultaneously also alleviated medical personnel's burden, improved the effect of utilizing stretcher to transport patientRate.
As shown in Figure 2, Fig. 2 is the concrete structure schematic diagram of the skeleton shown in Fig. 1.
In a kind of preferred embodiment about skeleton 1, skeleton 1 comprises at least two longitudinal rods 101 and establishesPut the bracing piece 102 between adjacent two longitudinal rods 101. Comprise that taking skeleton two longitudinal rods 101 are as example,These two longitudinal rods 101 distribute side by side, and are all parallel to the length direction of stretcher, and bracing piece 102 is horizontalBe arranged between two longitudinal rods 101, can just arrange at a certain distance one, so skeleton 1 just formsNetwork structure, significantly improved intensity.
So, slide block 4 can be arranged on the sidewall that is positioned at outermost longitudinal rod 101, such as two-end partPut. And in the process of transporting, touch because of carelessness hawser 3 for fear of patient, the present embodiment is by slide block 4Top flush with the top of longitudinal rod 101, so the major part of hawser 3 is nearly all positioned under skeleton 1,Patient just cannot touch easily, avoids producing unexpected injury because hawser 3 is wound around.
In a kind of preferred embodiment about slide block 4, slide block 4 comprises closed housing and fixed pulley. Wherein,It is U-shaped box-like that closed housing is, and entirety can be the sealing of closed or little sidewall (sidewall that area is less) open semiFormula, be fixedly connected with, and fixed pulley is convenient to coordinate with hawser 3 down and fixed pulley is arranged on closed housing with itSlide. Certainly,, if the semienclosed closed housing of little sidewall opening, hawser 3 can directly be worn from sidewall openingEnter after coordinating with fixed pulley and pass from sidewall opening again; If enclosed closed housing, can be at closed housingTwo side on offer through hole so that hawser 3 penetrates and passes smoothly.
Please refer to Fig. 3, Fig. 3 is the overall structure signal of the second detailed description of the invention provided by the present inventionFigure.
The second detailed description of the invention provided by the present invention, on the basis of the first detailed description of the inventionImprove, be specially: set up go-cart 5 and handle 6, and all the other contents of the present embodiment and aforementioned inHold identically, repeat no more herein.
In the second detailed description of the invention provided by the present invention, consider when patient transport strokeWhen long, medical personnel are more tired by the carry a stretcher mode of bar 2 of hand, for alleviating medical personnel in long-time fortuneBurden while sending patient, the present embodiment has been set up go-cart 5 in the bottom of stretcher. These go-cart 5 entirety are simple and easyThe form of dilly, mainly comprises loading plate 501, multiple support bar 502 and multiple roller 503.
Wherein, the main part that loading plate 501 is go-cart 5, can bearing article, all the other parts are installed.Roller 503 is arranged on the bottom of loading plate 501, ensures that it acts on one's own, and such as working as, loading plate 501 is rectangularTime, can be arranged on the bottom, four corners of loading plate 501. Herein preferably, for ensureing that go-cart 5 is in motionTime, to avoid colliding with rugged ground as far as possible, the roller 503 in the present embodiment can be high pin universal wheel.So arrange, can also avoid the foul such as dust, sewage on ground to be splashed on loading plate 501. Support bar 502Be the tie that connects go-cart 5 and upper strata stretcher, support bar 502 is vertically set on the surface of loading plate 501,Such as in the time that loading plate 501 is rectangular, support bar 502 can be set to 4, and is separately positioned on loading plate501 corner location. The other end of support bar 502, its top is connected with stretcher rod 2, makes go-cart 5Be combined into an entirety with upper strata stretcher. So, medical personnel, can be by promoting in the time transporting patientThe mode of go-cart 5, than adopting the carry a stretcher mode of bar 2 of hand, has saved great effort and labour.
As shown in Figure 4, Fig. 4 is the partial structurtes schematic diagram that the support bar shown in Fig. 3 is connected with stretcher rod.
In addition, in the present embodiment, the connected mode of the top of support bar 502 and stretcher rod 2 is preferably detachablyConnect, stretcher rod 2 can be removed from support bar 502 easily, and upper strata stretcher is separated with go-cart 5Come. So arrange, when, distance good in ground road conditions is longer, stretcher rod 2 can be set up to supportThe top of bar 502, makes upper strata stretcher and go-cart 5 be combined into entirety; And cannot use the feelings of go-cart 5 at someUnder condition, stretcher rod 3 can be removed from support bar 502, upper strata stretcher be separated, now with go-cart 5The medical personnel again hand bar 2 that carries a stretcher transport patient.
And in order to make medical personnel's hand bar 2 that carries a stretcher convenient and laborsaving while transporting patient, the present embodiment existsThe end position of each stretcher rod 2 is all provided with the handle 6 of being convenient to fingertip grasp.
In addition,, owing to can holding a certain amount of medical article on loading plate 501, therefore the present embodiment is holdingIn the circumferential direction of support plate 501, be provided with the many railings that surround 504, this railing 504 is generally perpendicular to carryingPlate 501, surrounds by loading plate 501 after surrounding, and stops the article landing holding.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field can be realized or useThe present invention. To be aobvious and easy for those skilled in the art to the multiple amendment of these embodimentSee, General Principle as defined herein can be in the situation that not departing from the spirit or scope of the present invention,Realize in other embodiments. Therefore, the present invention will can not be restricted to these embodiment shown in this article,But to meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a Self-balancing stretcher, comprise be arranged at the skeleton (1) of both sides and be arranged at two described in skeleton(1) the load cloth between, is characterized in that, also comprise lay respectively at two described on the outer skew back of skeleton (1)The stretcher rod (2) of side, the length direction of stretcher rod described in two (2) is all parallel to described skeleton (1)Length direction; Between both ends on each described stretcher rod (2), be connected with lax hawser (3), andOn the sidewall of each described skeleton (1), be provided with at least two for coordinate with described hawser (3) slip,And ensure the slide block that own level is stable (4).
2. Self-balancing stretcher according to claim 1, is characterized in that, each described skeleton (1)Comprise at least two longitudinal rods (101) that arrange along stretcher length direction and be horizontally set at adjacent twoBracing piece (102) between described longitudinal rod (101).
3. Self-balancing stretcher according to claim 2, is characterized in that, described slide block (4) is establishedBe placed on the sidewall of outermost described longitudinal rod (101), and the top of described slide block (4) with described inThe top of longitudinal rod (101) flushes.
4. Self-balancing stretcher according to claim 3, is characterized in that, outermost described longitudinalOn the sidewall of bar (101), be provided with two described slide blocks (4), and lay respectively at its position, both ends.
5. Self-balancing stretcher according to claim 1, is characterized in that, described slide block (4) bagDraw together the fixed pulley that is U-shaped box-like closed housing and is built in described closed housing and coordinates with described hawser (3),And on the two side of described closed housing, be provided with the through hole for passing for described hawser (3).
6. according to the Self-balancing stretcher described in claim 1-5 any one, it is characterized in that, also comprise and establishingBe placed in bottom go-cart (5), described go-cart (5) comprise loading plate (501) and be vertically installed in described inMultiple support bars (502) on loading plate (501), and the top of each described support bar (502) is respectivelyBe connected with each described stretcher rod (2); The bottom of described loading plate (501) is provided with multiple rollers (503).
7. Self-balancing stretcher according to claim 6, is characterized in that, each described support bar (502)Top all removably connect with each described stretcher rod (2).
8. Self-balancing stretcher according to claim 7, is characterized in that, each described stretcher rod (2)End be provided with the handle (6) of being convenient to fingertip grasp.
9. Self-balancing stretcher according to claim 8, is characterized in that, along described loading plate (501)Be circumferentially provided with many and surround so that the railing (504) of storing.
10. Self-balancing stretcher according to claim 9, is characterized in that, each described roller (503)Be high pin universal wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510929503.1A CN105596155A (en) | 2015-12-14 | 2015-12-14 | Self-balancing stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510929503.1A CN105596155A (en) | 2015-12-14 | 2015-12-14 | Self-balancing stretcher |
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| Publication Number | Publication Date |
|---|---|
| CN105596155A true CN105596155A (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510929503.1A Pending CN105596155A (en) | 2015-12-14 | 2015-12-14 | Self-balancing stretcher |
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| CN (1) | CN105596155A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107264744A (en) * | 2017-06-22 | 2017-10-20 | 中国人民解放军第二军医大学第二附属医院 | Floating marine life saving system |
| CN113057803A (en) * | 2021-04-08 | 2021-07-02 | 李松涛 | Combined field operation stretcher system |
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| JP2002272788A (en) * | 2001-03-21 | 2002-09-24 | Munejiro Sato | Stretcher chair |
| CN101947165A (en) * | 2010-10-13 | 2011-01-19 | 重庆理工大学 | Self-balancing stretcher |
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| CN202027814U (en) * | 2011-02-24 | 2011-11-09 | 绍兴文理学院元培学院 | Simple balanced stretcher |
| US20110309601A1 (en) * | 2001-08-24 | 2011-12-22 | Darling Iii Charles W | Mission adaptable portable cart/utility table arrangement |
| CN202933117U (en) * | 2012-12-04 | 2013-05-15 | 王秀玲 | Self-balancing stretcher |
| CN104382700A (en) * | 2014-11-24 | 2015-03-04 | 广西水利电力职业技术学院 | Automatic balancing stretcher |
| CN204671414U (en) * | 2015-02-15 | 2015-09-30 | 中国人民解放军第四军医大学 | A kind of anti-skidding Operation trolley for moving sidewalk |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002272788A (en) * | 2001-03-21 | 2002-09-24 | Munejiro Sato | Stretcher chair |
| US20110309601A1 (en) * | 2001-08-24 | 2011-12-22 | Darling Iii Charles W | Mission adaptable portable cart/utility table arrangement |
| CN201782897U (en) * | 2010-08-17 | 2011-04-06 | 中国农业大学 | Self-balancing rescue stretcher |
| CN101947165A (en) * | 2010-10-13 | 2011-01-19 | 重庆理工大学 | Self-balancing stretcher |
| CN202027814U (en) * | 2011-02-24 | 2011-11-09 | 绍兴文理学院元培学院 | Simple balanced stretcher |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107264744A (en) * | 2017-06-22 | 2017-10-20 | 中国人民解放军第二军医大学第二附属医院 | Floating marine life saving system |
| CN113057803A (en) * | 2021-04-08 | 2021-07-02 | 李松涛 | Combined field operation stretcher system |
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Application publication date: 20160525 |