CN101889929A - Three-rocking five-functional hospital bed - Google Patents
Three-rocking five-functional hospital bed Download PDFInfo
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- CN101889929A CN101889929A CN2010102237884A CN201010223788A CN101889929A CN 101889929 A CN101889929 A CN 101889929A CN 2010102237884 A CN2010102237884 A CN 2010102237884A CN 201010223788 A CN201010223788 A CN 201010223788A CN 101889929 A CN101889929 A CN 101889929A
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Abstract
The invention relates to a three-rocking five-functional hospital bed, which comprises an upper bedstead provided with a bearing block, a lower bedstead, a lifting device connecting the upper and lower bedsteads, and a driving transmission mechanism and a driven transmission mechanism which are arranged on the upper bedstead. In the three-rocking five-functional hospital bed, the principle of gear transmission is utilized, a group of driven transmission screw wire pushers are arranged, and rocking power acts on two screw wire pushers to control the screw wire pushers by the engagement and separation of gears, and acts on the movement of a front lifting arm and a rear lifting arm respectively; therefore, apart from the five functions of a bed body, the hospital bed has the characteristics of simple and easy manufacture, low cost, and simple, safe and reliable operation during use.
Description
Technical field
The present invention relates to a kind of three-rocking five-functional hospital bed.
Background technology
Common hospital bed has generally that backboard is turned up, the thigh plate is turned up, three functions of bed surface lifting, yet manually hospital bed is in the clinical function that Trendelenburg's position and contrary Trendelenburg's position also must be arranged in the treatment of the patient being carried out cardio-pulmonary resuscitation and rescue application, but widely used manual hospital bed is difficult to finish all application requirements of medical personnel because the limitation of rocking handle installation site can only be installed three rocking handles at present.
Summary of the invention
Technical problem to be solved by this invention provide a kind of simple to operation, safe and reliable, under the situation that does not change existing bed body profile 26S Proteasome Structure and Function, can additionally finish the three-rocking five-functional hospital bed of Trendelenburg's position and contrary two kinds of functions of Trendelenburg's position.
The present invention adopts following technical scheme:
The present invention includes the bed frame that is provided with bearing block, down bedstead, connect the lowering or hoisting gear of bed frame and following bedstead and be arranged on active drive mechanism and slave hand actuator on the bed frame;
Described lowering or hoisting gear be included in the active lifting arm of bed frame hinge and driven lifting arm, with the Active support arm of lifting arm hinge initiatively, with the driven support arm of driven lifting arm hinge, described Active support arm is connected with following bedstead with driven support arm, described driven support arm is hinged by assembling stand and following bedstead, the lower end of described Active support arm is provided with the pulley that can slide in sliding rail, described sliding rail is fixedlyed connected with following bedstead;
Described active drive mechanism is included in the wind on the bed frame, by the be connected universal joint of active connecting axle with the wind suit, with the hexagonal gear shaft that is connected the riveted joint of universal joint rigidity, closely be sleeved on rolling bearing on the hexagonal gear shaft and driving gear and by the active line thruster of universal joint and hexagonal gear shaft other end hinge initiatively, described driving gear two ends are provided with circlip, described active line thruster is by active toggle hinge, described active toggle is connected with Active support arm rigidity, and described rolling bearing is arranged in the bearing spider;
Described slave hand actuator comprises the clutch handle that is provided with and is welded on the clutch handle stand hinge on the bed frame, with the clutch push rod of clutch handle by clutch push rod hinge, be arranged on the rolling bearing in the bearing block, be sleeved on the splined shaft in the rolling bearing, with splined shaft one end by driven universal joint hinge from the moving-wire thruster, described from the moving-wire thruster other end and reverse lever arm hinge, described reverse lever arm is hinged with reverse push rod, described reverse push rod and driven toggle are hinged, be set with driven shifting slide gear on the described splined shaft, described driven shifting slide gear is meshed with driving gear, described splined shaft radial direction is provided with the Long Circle through hole, axial direction is provided with the guide hole that probes into for the clutch push rod, described clutch push rod be inserted in the axial guide hole of splined shaft and be arranged on the radially diplopore pin contacts in the Long Circle spacing hole of splined shaft, the compression spring that is set with on the splined shaft, described compression spring contacts with driven shifting slide gear; Pull clutch handle, promoting the clutch push rod moves vertically, the clutch push rod promote to be arranged on splined shaft radially the diplopore pin in the Long Circle spacing hole move, the driven shifting slide gear that the diplopore pin promotes to be sleeved on the splined shaft moves axially along splined shaft, makes driven shifting slide gear and driving gear break away from engagement; Describedly connect by U-shaped support strand from moving-wire thruster and bed frame, described driven toggle is that rigidity is connected with driven support arm.
Bed frame of the present invention is provided with the bed surface that thigh plate, seat, calf plate and backboard by mutual hinge constitute.
Also be provided with thigh plate control device on the bed frame of the present invention, described thigh plate control device comprises with the dextrorotation line thruster that is welded on the U-shaped stand hinge on the bed frame, turns round the thigh plate of arm hinge by the thigh plate with the regulation of mental activities connecting rod that is set in wind of dextrorotation line thruster one end rigidity riveted joint and with the dextrorotation line thruster other end.
Also be provided with the backboard control device on the bed frame of the present invention, described backboard control device comprises with the left-handed line thruster that is welded on the U-shaped stand hinge on the bed frame, is set with wind, regulation of mental activities connecting rod and turns round the backboard of arm hinge by backboard with the left-handed line thruster other end with left-handed line thruster one end;
Also be provided with servomechanism on the bed frame of the present invention, described servomechanism comprise be welded on power-assisted spring bracket on the bed frame, coaxial hinge help air spring, with the driven power assistant arm that helps the air spring strand to connect and with the active power assistant arm that helps the air spring strand to connect, initiatively power assistant arm is that rigidity is connected with the active lifting arm, and driven power assistant arm is that rigidity is connected with driven lifting arm.
Bedstead is provided with castor under the present invention.
Good effect of the present invention is as follows:
The present invention utilizes the gear drive principle, increase by one group of driven drive screw line thruster, make dynamo power act on two screw lines thrusters, utilize gear meshing and separate two screw lines thrusters of control, act on the motion of former and later two lifting arms respectively, make the bed body except finishing five kinds of functions, that the present invention makes is simple and easy, cost is low, and is simple to operate in the use, safe and reliable.
Description of drawings
Accompanying drawing 1 structural representation of the present invention.
Accompanying drawing 2 is a slave hand actuator structural representation of the present invention.
Accompanying drawing 3 is a thigh plate control device structural representation of the present invention.
Accompanying drawing 4 is a backboard control device structural representation of the present invention.
Accompanying drawing 5 is a high-order lying status sketch map of the present invention.
Accompanying drawing 6 is a low level lying status sketch map of the present invention.
Accompanying drawing 7 is a Trendelenburg's position view of the present invention.
Accompanying drawing 8 is a power assisting device structural representation of the present invention.
Accompanying drawing 9 is a contrary Trendelenburg's position view of the present invention.
Accompanying drawing 10 is an arrangement of clutch structural representation of the present invention.
In the accompanying drawings: 1 bed frame, 2 times bedsteads, 3 active lifting arms, 4 driven lifting arms, 5 clutch handle supports, 6 bearing blocks, 7 reverse lever arms, 8U shape support, 9 castors, 10 assembling stands, 11 sliding rails, 12 winds, 13 connect universal joint, 14 hexagonal gear shafts, 15 rolling bearings, 16 circlips, 17 driving gears, 18 active universal joints, 19 active line thrusters, 20 clutch handles, 21 clutch push rods, 22 diplopore pins, 23 splined shafts, 24 driven shifting slide gears, 25 rolling bearings, 26 compression springs, 27 driven universal joints, 28 from the moving-wire thruster, 29 reverse push rods, 30 active power assistant arm, 31 active toggles, 32 Active support arms, 33 pulleys, 34 driven power assistant arm, 35 driven toggles, 36 driven support arms, 37 active connecting axles, 38 dextrorotation line thrusters, 39 regulation of mental activities connecting rods, 40U shape support, 41 thigh plates are turned round arm, 42 winds, 43 left-handed line thrusters, 44U shape support, 45 regulation of mental activities connecting rods, 46 winds, 47 backboards are turned round arm, 48 power-assisted spring brackets, 49 help air spring, 50 help air spring, 51 thigh plates, 52 seats, 53 backboards, 54 calf plates, 55 clutch push rods.
The specific embodiment
Shown in accompanying drawing 1,2, be one embodiment of the present of invention, the present invention includes bed frame 1, down bedstead 2, with the active lifting arm 3 of bed frame 1 hinge and driven lifting arm 4 and the active lifting arm 3 that passes through respectively and driven lifting arm 4 Active support arm 32 and driven support arm 36 with following bedstead 2 hinges; The invention enables a body except finishing five kinds of functions, that the present invention makes is simple and easy, cost is low, and is simple to operate in the use, safe and reliable.
Described bed frame 1 is provided with initiatively drive mechanism and slave hand actuator, utilize the gear drive principle, increase by one group of driven drive screw line thruster, make dynamo power can act on initiatively line thruster 19 simultaneously and from moving-wire thruster 28, utilize gear meshing and separate initiatively line thruster 19 and of control from moving-wire thruster 28, act on the motion of former and later two lifting arms respectively, be welded with on the described down bedstead 2 with the assembling stand 10 of driven support arm 36 hinges and with the pulley 33 on the sliding rail 11 of being arranged on of Active support arm 32 hinges, following bedstead 2 is provided with castor 9;
Described active drive mechanism comprises the wind 12 that is arranged on the bed frame 1, be connected universal joint 13 by active connecting axle 37 and wind 12 suits, with the hexagonal gear shaft 14 that is connected the riveted joint of universal joint 13 rigidity, the active line thruster 19 that closely is sleeved on rolling bearing 15 and the driving gear 17 on the hexagonal gear shaft 14 and passes through active universal joint 18 and hexagonal gear shaft 14 other end hinges, described driving gear 17 two ends are provided with circlip 16, described active line thruster 19 connects with active toggle 31 strands, and initiatively toggle 31 is connected with Active support arm 32 rigidity;
Described slave hand actuator comprises and the clutch handle 20 that is welded on clutch handle support 5 hinges on the bed frame 1, clutch push rod 21 with clutch handle 20 hinges, with the bearing block 6 belled a pair of rolling bearings 25 that are welded on the bed frame 1, be sleeved on the splined shaft 23 in the rolling bearing 15, be sleeved on the compression spring 26 on the splined shaft 23, with splined shaft 23 other ends by driven universal joint 27 hinges from moving-wire thruster 28, with the driven toggle 35 that is hinged from moving-wire thruster 28 other ends and reverse lever arm 7 and is hinged by reverse push rod 29 with reverse lever arm 7, be set with driven shifting slide gear 24 on the described splined shaft 23, described driven shifting slide gear 24 is formed arrangement of clutch with driving gear 17, described splined shaft 23 radial direction are provided with the Long Circle through hole, axial direction is provided with guide hole, described clutch push rod 21 be inserted in splined shaft 23 axial blind holes and be arranged on splined shaft 23 radially the diplopore pin 22 in the Long Circle spacing hole closely contact; Pull clutch handle 20, promoting clutch push rod 21 moves vertically, clutch push rod 21 promote to be arranged on splined shaft 23 radially the diplopore pin 22 in the Long Circle spacing hole move, the driven shifting slide gear 24 that diplopore pin 22 promotes to be sleeved on the splined shaft 23 moves axially along splined shaft 23, makes driven shifting slide gear 24 and driving gear 17 break away from engagement; Describedly connect by U-shaped support 8 strands from moving-wire thruster 28 and bed frame 1, described driven toggle 35 is connected for rigidity with driven support arm 36.Driven support arm 36 is sat 10 strands even with the assembling that is arranged on down on the bedstead.
Shown in accompanying drawing 6,7,8,9, be the present invention embodiment of several limit states of drive mechanism and slave hand actuator initiatively, when clutch handle is in Fig. 6 hang, shake the lifting joystick counterclockwise to neutral gear position, bed surface vertically drops to design height; When pressing the cocked clutch handle of Fig. 9 arrow direction indication, shake the lifting joystick clockwise to neutral gear position, can realize the function of contrary Trendelenburg's position (the head height foot is low); When pulling clutch handle to Fig. 8 hang, continue to shake lifting joystick 12 clockwise, can realize the higher limit of bed surface top level height; When pressing the cocked clutch handle of Fig. 7 arrow direction indication, shake lifting joystick 12 counterclockwise to neutral gear position, can realize the function of Trendelenburg's position (a low foot height).
Be provided with the bed surface that thigh plate 51, seat 52, calf plate 54 and backboard 53 by mutual hinge constitute as accompanying drawing 3,4 bed frames 1 of the present invention.
As shown in Figure 3, turn up an embodiment of state for thigh plate of the present invention, bed frame 1 of the present invention is provided with thigh plate control device, described thigh plate control device comprises and the U-shaped support 40 that is welded on the bed frame 1, the dextrorotation line thruster 38 of hinge, turn round the thigh plate 51 of arm 41 hinges by the thigh plate with the regulation of mental activities connecting rod 39 that is set in wind 42 of dextrorotation line thruster 38 1 end rigidity riveted joints and with dextrorotation line thruster 38 other ends, when needs thigh plate is turned up, only need shake wind 42 clockwise can make the thigh plate turn up design angle by dextrorotation line thruster 38, the requirement of finishing the work.
As shown in Figure 4, turn up an embodiment of state for backboard of the present invention, bed frame 1 of the present invention is provided with the backboard control device, described backboard control device comprises with the left-handed line thruster 43 that is welded on U-shaped support 44 on the bed frame 1, hinge, is set with wind 46, regulation of mental activities connecting rod 45 and turns round the backboard 53 of arm 47 hinges by backboard with left-handed line thruster 43 other ends with left-handed line thruster 43 1 ends, when the needs backboard is rolled over, only need shake wind 46 clockwise can make backboard turn up design angle by left-handed line thruster 43, the requirement of finishing the work;
As shown in Figure 5, an embodiment of servomechanism is installed for the present invention, bed frame 1 of the present invention is provided with servomechanism, described servomechanism comprises and the power-assisted spring bracket 48 that is welded on the bed frame 1, coaxial hinge help air spring 49, the active power assistant arm 30 and the driven power assistant arm 34 that help air spring 50 and connect with power-assisted vapour spring strand, initiatively power assistant arm 30 is connected for rigidity with active lifting arm 3, driven power assistant arm 34 is connected for rigidity with driven lifting arm 4, the main effect of servomechanism is when initiatively drive mechanism or slave hand actuator rise, servomechanism can overcome the gravity of a fixed bed body own, alleviate the operating force of operator rocking handle 12, described power-assisted air spring 49, power-assisted air spring 50 is " non-controllable type industry air springs ", indoor design has Compressed Gas, has reduced medical personnel's working strength.
Claims (6)
- One kind three-rocking five-functional hospital bed, it is characterized in that it comprise the bed frame (1) that is provided with bearing block (6), down bedstead (2), connect the lowering or hoisting gear of bed frame (1) and following bedstead (2) and be arranged on active drive mechanism and slave hand actuator on the bed frame (1);Described lowering or hoisting gear is included in the active lifting arm (3) and the driven lifting arm (4) of bed frame (1) hinge, Active support arm (32) with active lifting arm (3) hinge, driven support arm (36) with driven lifting arm (4) hinge, described Active support arm (32) is connected with following bedstead (2) with driven support arm (36), described driven support arm (36) is hinged by assembling stand (10) and following bedstead (2), the lower end of described Active support arm (32) is provided with the pulley (33) that can slide in sliding rail (11), described sliding rail (11) is fixedlyed connected with following bedstead (2);Described active drive mechanism is included in the wind (12) on the bed frame (1), be connected universal joint (13) by active connecting axle (37) and wind (12) suit, with the hexagonal gear shaft (14) that is connected the riveted joint of universal joint (13) rigidity, closely be sleeved on rolling bearing (15) on the hexagonal gear shaft (14) and driving gear (17) and by the active line thruster (19) of universal joint (18) initiatively with hexagonal gear shaft (14) other end hinge, described driving gear (17) two ends are provided with circlip (16), described active line thruster (19) is by active toggle (31) hinge, described active toggle (31) is connected with Active support arm (32) rigidity, and described rolling bearing (15) is arranged in the bearing spider (6);Described slave hand actuator comprises the clutch handle (20) that is provided with and is welded on clutch handle support (5) hinge on the bed frame (1), with the clutch push rod (21) of clutch handle (20) by clutch push rod (55) hinge, be arranged on the rolling bearing (25) in the bearing block (6), be sleeved on the splined shaft (23) in the rolling bearing (25), with splined shaft (23) one ends by driven universal joint (27) hinge from moving-wire thruster (28), described from moving-wire thruster (28) other end and reverse lever arm (7) hinge, described reverse lever arm (7) is hinged with reverse push rod (29), described reverse push rod (29) is hinged with driven toggle (35), be set with driven shifting slide gear (24) on the described splined shaft (23), described driven shifting slide gear (24) is meshed with driving gear (17), described splined shaft (23) radial direction is provided with the Long Circle through hole, axial direction is provided with the guide hole that probes into for clutch push rod (21), described clutch push rod (21) be inserted into splined shaft (23) axially in the guide hole and be arranged on splined shaft (23) radially the diplopore pin (22) in the Long Circle spacing hole contact, the compression spring (26) that is set with on the splined shaft (23), described compression spring contacts with driven shifting slide gear (24); Pull clutch handle (20), promoting clutch push rod (21) moves vertically, clutch push rod (21) promote to be arranged on splined shaft (23) radially the diplopore pin (22) in the Long Circle spacing hole move, the driven shifting slide gear (24) that diplopore pin (22) promotes to be sleeved on the splined shaft (23) moves axially along splined shaft (23), makes driven shifting slide gear (24) and driving gear (17) break away from engagement; The described strand by U-shaped support (8) with bed frame (1) from moving-wire thruster (28) connects, and described driven toggle (35) is connected for rigidity with driven support arm (36).
- 2. according to claim 1 a kind of three-rocking five-functional hospital bed, it is characterized in that described bed frame (1) is provided with the bed surface by thigh plate (51), seat (52), calf plate (54) and backboard (53) formation of mutual hinge.
- 3. according to claim 2 a kind of three-rocking five-functional hospital bed, it is characterized in that also being provided with on the described bed frame (1) thigh plate control device, described thigh plate control device comprises with the dextrorotation line thruster (38) that is welded on U-shaped support (40) hinge on the bed frame (1), turns round the thigh plate (51) of arm (41) hinge by the thigh plate with the regulation of mental activities connecting rod (39) that is set in wind (42) of dextrorotation line thruster (38) one end rigidity riveted joints and with dextrorotation line thruster (38) other end.
- 4. according to claim 2 a kind of three-rocking five-functional hospital bed, it is characterized in that also being provided with the backboard control device on the described bed frame (1), described backboard control device comprises with the left-handed line thruster (43) that is welded on U-shaped support (44) hinge on the bed frame (1), is set with wind (46), regulation of mental activities connecting rod (45) and turns round the backboard (53) of arm (47) hinge by backboard with left-handed line thruster (43) other end with left-handed line thruster (43) one ends;
- 5. according to claim 1 or 3 or 4 described a kind of three-rocking five-functional hospital bed, it is characterized in that also being provided with servomechanism on the described bed frame (1), described servomechanism comprise be welded on power-assisted spring bracket (48) on the bed frame (1), coaxial hinge help air spring (49,50), with the driven power assistant arm (34) that helps air spring (49) strand to connect and with the active power assistant arm (30) that helps air spring (50) strand to connect, initiatively power assistant arm (30) is with initiatively lifting arm (3) is for rigidity is connected, and driven power assistant arm (34) is connected for rigidity with driven lifting arm (4).
- 6. according to claim 5 a kind of three-rocking five-functional hospital bed, it is characterized in that described bedstead (2) down is provided with castor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010223788.4A CN101889929B (en) | 2010-07-12 | 2010-07-12 | Three-rocking five-functional hospital bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010223788.4A CN101889929B (en) | 2010-07-12 | 2010-07-12 | Three-rocking five-functional hospital bed |
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| CN101889929A true CN101889929A (en) | 2010-11-24 |
| CN101889929B CN101889929B (en) | 2014-07-02 |
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| CN201010223788.4A Active CN101889929B (en) | 2010-07-12 | 2010-07-12 | Three-rocking five-functional hospital bed |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784037A (en) * | 2012-08-24 | 2012-11-21 | 江苏永发医用设备有限公司 | Manual rapid resetting device of back board of medical bed |
| CN103040593A (en) * | 2012-12-02 | 2013-04-17 | 朱幕松 | Weight slope self-service type lumbar vertebra traction device |
| CN103211688A (en) * | 2012-10-26 | 2013-07-24 | 天津世纪金辉医用设备有限公司 | Manual-operated three-rocking sick bed |
| CN103462751A (en) * | 2013-09-28 | 2013-12-25 | 河南康立医疗设备科技有限公司 | Multifunctional medical swing bed |
| CN103550038A (en) * | 2013-09-22 | 2014-02-05 | 河北普康医疗设备有限公司 | Nursing bed capable of avoiding pressure trauma |
| CN109998819A (en) * | 2019-05-06 | 2019-07-12 | 南阳市中心医院 | A kind of movable limbs instrument of Internal Medicine-Cardiovascular Dept. |
| WO2019157609A1 (en) * | 2018-02-13 | 2019-08-22 | 赖振标 | Labor-saving driving device for nursing bed |
| CN110151427A (en) * | 2018-02-13 | 2019-08-23 | 赖振标 | The nursing bed that can be urinated and defecated in sitting posture |
| CN113288625A (en) * | 2021-05-13 | 2021-08-24 | 吉林大学第一医院 | Portable blood disease nursing bed with sterilization function |
| CN113876142A (en) * | 2021-11-09 | 2022-01-04 | 衢州职业技术学院 | Liftable bed and lifting control method thereof |
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| US20040187213A1 (en) * | 2003-03-24 | 2004-09-30 | Yi-Lung Wang | Power-controlled bed and method for controlling operations thereof |
| CN2917611Y (en) * | 2006-04-13 | 2007-07-04 | 李知白 | Convenient hospital bed with hand-operated aggregate unit |
| CN201453550U (en) * | 2009-06-18 | 2010-05-12 | 刘若楠 | Ecological hospital bed |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784037A (en) * | 2012-08-24 | 2012-11-21 | 江苏永发医用设备有限公司 | Manual rapid resetting device of back board of medical bed |
| CN103211688A (en) * | 2012-10-26 | 2013-07-24 | 天津世纪金辉医用设备有限公司 | Manual-operated three-rocking sick bed |
| CN103040593A (en) * | 2012-12-02 | 2013-04-17 | 朱幕松 | Weight slope self-service type lumbar vertebra traction device |
| CN103550038B (en) * | 2013-09-22 | 2016-04-27 | 河北普康医疗设备有限公司 | One exempts from pressure wound nursing bed |
| CN103550038A (en) * | 2013-09-22 | 2014-02-05 | 河北普康医疗设备有限公司 | Nursing bed capable of avoiding pressure trauma |
| CN103462751B (en) * | 2013-09-28 | 2016-09-14 | 河南康立医疗设备科技有限公司 | A kind of multifunctional medical shaking table |
| CN103462751A (en) * | 2013-09-28 | 2013-12-25 | 河南康立医疗设备科技有限公司 | Multifunctional medical swing bed |
| WO2019157609A1 (en) * | 2018-02-13 | 2019-08-22 | 赖振标 | Labor-saving driving device for nursing bed |
| CN110151427A (en) * | 2018-02-13 | 2019-08-23 | 赖振标 | The nursing bed that can be urinated and defecated in sitting posture |
| CN109998819A (en) * | 2019-05-06 | 2019-07-12 | 南阳市中心医院 | A kind of movable limbs instrument of Internal Medicine-Cardiovascular Dept. |
| CN113288625A (en) * | 2021-05-13 | 2021-08-24 | 吉林大学第一医院 | Portable blood disease nursing bed with sterilization function |
| CN113288625B (en) * | 2021-05-13 | 2022-05-20 | 吉林大学第一医院 | Portable blood disease nursing bed with sterilization function |
| CN113876142A (en) * | 2021-11-09 | 2022-01-04 | 衢州职业技术学院 | Liftable bed and lifting control method thereof |
| CN113876142B (en) * | 2021-11-09 | 2023-03-10 | 衢州职业技术学院 | Liftable bed and lifting control method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
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