CN105769498B - A kind of operation method of medical plateform system and the system - Google Patents

A kind of operation method of medical plateform system and the system Download PDF

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Publication number
CN105769498B
CN105769498B CN201610095651.2A CN201610095651A CN105769498B CN 105769498 B CN105769498 B CN 105769498B CN 201610095651 A CN201610095651 A CN 201610095651A CN 105769498 B CN105769498 B CN 105769498B
Authority
CN
China
Prior art keywords
carrying
platform
sliding block
driving motor
medical
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.)
Expired - Fee Related
Application number
CN201610095651.2A
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Chinese (zh)
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CN105769498A (en
Inventor
王安祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Dongfang Gemma gene biological science and Technology Co Ltd
Original Assignee
Shanghai Dongfang Gemma Gene Biological Science And Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Dongfang Gemma Gene Biological Science And Technology Co Ltd filed Critical Shanghai Dongfang Gemma Gene Biological Science And Technology Co Ltd
Priority to CN201610095651.2A priority Critical patent/CN105769498B/en
Publication of CN105769498A publication Critical patent/CN105769498A/en
Application granted granted Critical
Publication of CN105769498B publication Critical patent/CN105769498B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00Operating tables; Auxiliary appliances therefor
    • A61G13/02Adjustable operating tables; Controls therefor
    • A61G13/04Adjustable operating tables; Controls therefor tiltable around transverse or longitudinal axis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00Operating tables; Auxiliary appliances therefor
    • A61G13/10Parts, details or accessories
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018Control or drive mechanisms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00General characteristics of devices
    • A61G2203/10General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00General characteristics of devices
    • A61G2203/30General characteristics of devices characterised by sensor means

Abstract

A kind of medical plateform system, including controller, motor-drive circuit and medical stage apparatus, the medical stage apparatus includes bearing frame body(6)And the bearing frame body(6)The carrying platform being pivotally connected(9), in the carrying platform(9)Lower section and also with the bearing frame body(6)The adjustment platform being pivotally connected(8)And in the adjustment platform(8)Lower section and with being fixed at the adjustment platform(8)The adjustment gear wheel segment of downside(81)The drive gear of engagement(7), the drive gear(7)It is driven by driving motor (77), the driving motor (77) passes through stent (76) and the bearing frame body(6)It is fixedly connected, the controller passes through motor-drive circuit and the driving motor(77)Electrical connection, so as to control the driving motor(77)Rotation, the driving motor(77)It rotates and drives the drive gear(7)Operating.

Description

A kind of operation method of medical plateform system and the system
Technical field
The present invention relates to medical machinery field, the operation method of especially a kind of medical plateform system and the system.
Background technology
In the medical field, a variety of medical carrying platforms are often used, such as operation workbench, instrument inspection are used and put down Platform, outpatient service or patient's bed in hospital etc..In many situations, these carrying platform required angles are adjustable, to comply at any time Medical treatment detection or the requirement of operation.
In most circumstances, it may be necessary to be adjusted according to the waist bending degree of patient before and after platform to angle. But under some special cases, it is also necessary to adjust the lateral tilt angle of entire carrying platform.I.e. so that carrying platform direction Side tilts.Some existing adjustment means, which are difficult to meet, simply and reliably reaches this angle adjustment requirement.Moreover, because The adjustment gearing component needed is accurate reliable, and under daily non-adjustment state, it is difficult to during use to these essences Close transmission parts interfere and influence its machine driving precision.
Invention content
The purpose of the present invention is to provide a kind of medical plateform system and the operation methods of the system, can overcome existing Drawbacks described above in technology.
According to an aspect of the present invention, a kind of medical plateform system, including controller, motor-drive circuit and Medical flat Table apparatus, the medical stage apparatus include bearing frame body, the carrying platform being pivotally connected with the bearing frame body, are held described The lower section of carrying platform and also with it is described bearing frame body be pivotally connected adjustment platform and it is described adjustment platform lower section and with The drive gear of the adjustment gear wheel segment engagement on the downside of the adjustment platform is fixed at, the drive gear is driven by driving motor Dynamic, the driving motor is fixedly connected by stent with the bearing frame body, and the controller passes through motor-drive circuit and institute Driving motor electrical connection is stated, so as to control the rotation of the driving motor, the driving motor rotates and drives the sliding tooth Wheel operating;Wherein, elastic telescopic junction piece, each elastic telescopic junction piece are symmetrically provided at left and right sides of the adjustment platform It is retractably installed at by the elastic carrier component at its lower end in the telescopic hole of the adjustment platform, the bearing frame body The left and right sides, which is also symmetrically fixedly installed, slides bolster stake component, and described slide in bolster stake component is each both provided with confession The sliding cavity of vertical direction extension that sliding block slides is carried, each carrying sliding block is hinged with the lower end of corresponding support rod, Each upper end and the respective side portion of the carrying platform in two support rods are hinged, wherein, each carrying is slided Slide-and-guide casting lug thereon is provided at the left and right side of block to the guide groove cooperation in the left and right medial surface with the sliding cavity So as to be oriented to the up and down motion of the carrying sliding block, tooth form lock is provided at the front and back sides of each carrying sliding block Determine face to can in the sliding cavity two lock sliders of front and back upward sliding corresponding toothed surface engage, so as to Locking is clamped to the carrying sliding block;Each be provided at upper and lower end parts in described two lock sliders drives slip Portion, the driving sliding part on one in described two lock sliders and another pair in described two lock sliders It answers and is provided with contraction spring between the driving sliding part of end, held accordingly so that described two lock sliders are clamped and engaged Sliding block is carried, each driving sliding part is also coupled with electromagnetic actuator device, to receive the drive of the electromagnetism of the electromagnetic actuator device Power so as to which described two lock sliders are overcome the convergent force of the contraction spring and are opened, is slided so as to discharge the carrying Block;Wherein, the electromagnetic actuator device is controlled by the controller so that the driving power falling edge in the driving motor is swashed Hair powers on, so as to which described two lock sliders be opened;The electromagnetic actuator device is powered on up to the carrying platform being excited Be enough to adjust itself angle of inclination and lower electricity after the period of stabilization.
According to another aspect of the present invention, the operation method of the medical plateform system, wherein, original state is the lock Fixed slider will carry slider locks accordingly;When needing to adjust implementation lateral tilt angle, driven by controller by motor Circuit controls the driving motor operation, and the lateral tilt angle of the adjustment platform is adjusted in place;At this point, the elasticity is stretched Contracting junction piece elastic telescopic so as to comply with it is described adjustment platform and the carrying platform between relative angle;When the driving motor When out of service, the electromagnetic actuator device, which is excited, to be powered on, so as to which the carrying sliding block be unlocked, the carrying platform Its lateral tilt angle is gradually adjusted under the action of the elastic telescopic junction piece so as to the side finally with the adjustment platform It is consistent to angle of inclination and reach stable state;Later, it is electric under the electromagnetic actuator device, cause under the action of contraction spring The carrying sliding block is again at lock-out state.
Through the above scheme, it is located under carrying platform and the adjustment platform of resilient engagement therewith due to being provided with, it is logical Cross the lateral tilt angle of the angle for adjusting the adjustment platform and Indirect method carrying platform, so as to avoid with adjust platform engage it is small The impact damage of gear.Due to be fixedly installed on carrier two slip bolster stakes, by hinged support bar and with Carrying platform is mechanically connected, therefore can operationally support the carrying platform to ensure its mechanical robustness and use reliable Property, and it can be operated and be discharged, so as to which mechanical movement simultaneously is to allow angle adjustment to carrying platform and right at any time Angle after adjustment is fixed.The fixation of this angle also further ensures the impact protection for drive pinion. And the electromagnetic actuator device that operationally carrying sliding block is locked and discharged is set, it can may be programmed or be controlled by the controller Of short duration release degree of freedom is carried out to carrying platform automatically when ground is electric under motor, so as to allow carrying platform self-adjusting with suitable It should be in the angle of adjustment platform.Adjust platform two elastic flexible components can play buffered with carrying platform while, also rise The effect of Indirect method is carried out to the angle for carrying platform.And the front and back sides setting in carrying sliding block locks the flank of tooth, Left and right side setting is slidable to be oriented to protrusion, the smooth sliding that can not only ensure to carry sliding block, but also realizes for its position Locking, and make full use of the structure space of carrying sliding block so that compact mechanical structure and stress consolidates.By pinion gear with It adjusts the engagement of the gear wheel segment of platform and simplifies drive mechanism, avoid extending transmission chain and reducing precision and increase equipment cost With manufacture cost.Whole device is easy to use, reliable and can bear the effect of the impact during medical routine use Power, stabilized structure.
Description of the drawings
Fig. 1 schematically illustrates the overall schematic of medical stage apparatus;Wherein the medical stage apparatus is in and does not open Begin the original state adjusted the angle.
Fig. 2 shows the medical stage apparatus in Fig. 1 angle is adjusted in adjustment platform and carrying platform does not start adjusting angle Status diagram when spending.
Fig. 3 is that the medical stage apparatus in Fig. 2 completes lateral angles after carrying platform conforms to the angle of adjustment platform Status diagram during adjustment.
Fig. 4 is the overlooking structure diagram of the carrying sliding block in Fig. 1.
Fig. 5 is the left view structure diagram of the carrying sliding block in Fig. 1.
Fig. 6 is the structure diagram of the medical plateform system of the present invention.
Specific embodiment
With reference to Fig. 1-6, embodiments of the present invention will be described.
With reference to Fig. 1-6, according to a kind of medical plateform system of embodiment, including controller, motor-drive circuit and medical Stage apparatus, the medical stage apparatus include bearing frame body 6, with it is described bearing frame body 6 be pivotally connected carrying platform 9, The lower section of the carrying platform 9 and the adjustment platform 8 that is also pivotally connected with the bearing frame body 6 and in the adjustment platform 8 Lower section and the drive gear 7 engaged with being fixed at the adjustment gear wheel segment 81 of 8 downside of adjustment platform, the sliding tooth Wheel 7 is driven by driving motor 77, and the driving motor 77 is fixedly connected by stent 76 with the bearing frame body 6, the control Device is electrically connected by motor-drive circuit with the driving motor 77, so as to control the rotation of the driving motor 77, the drive Dynamic motor 77 rotates and the drive gear 7 is driven to operate;Wherein, the left and right sides of the adjustment platform 8 is symmetrically provided with bullet Property telescopic engagement block 82, each elastic telescopic junction piece 82 is telescopically installed by the elastic carrier component 83 at its lower end In the telescopic hole of the adjustment platform 8, the left and right sides of the bearing frame body 6, which is also symmetrically fixedly installed, slides bolster stake portion Part 61,62, each vertical direction slided for carrying sliding block 611 that is both provided with slided in bolster stake component 61,62 prolong The sliding cavity 610 stretched, each carrying sliding block 611 are hinged with the lower end of corresponding support rod 69, two support rods 69 In each upper end and the respective side portion of the carrying platform 9 be hinged, wherein, the left and right sides of each carrying sliding block 611 Be provided at face slide-and-guide casting lug thereon 616 to in the left and right medial surface of the sliding cavity 610 guide groove cooperation so as to The up and down motion of the carrying sliding block 611 is oriented to, tooth form is provided at the front and back sides of each carrying sliding block 611 Lock face 617 to can in the sliding cavity 610 two lock sliders 613,614 of front and back upward sliding it is corresponding Toothed surface 618 engages, so as to be clamped locking to the carrying sliding block 611;It is every in described two lock sliders 613,614 A be provided at upper and lower end parts drives sliding part 619, and the driving on one in described two lock sliders 613,614 is slided It is set between driving sliding part 619 at dynamic portion 619 and another corresponding end in described two lock sliders 613,614 Contraction spring 620 is equipped with, so that described two lock sliders 613,614 clamp and engage corresponding carrying sliding block 611, Mei Gesuo Driving sliding part 619 is stated also to couple with electromagnetic actuator device 615, to receive the electromagnetic driving force of the electromagnetic actuator device 615, So as to which described two lock sliders 613,614 are overcome the convergent force of the contraction spring 620 and are opened, so as to discharge described hold Carry sliding block 611;Wherein, the electromagnetic actuator device 615 is controlled by the controller so as in the driving power of the driving motor 77 Falling edge, which is excited, to be powered on, so as to which described two lock sliders 613,614 be opened;The electromagnetic actuator device 615 is in quilt Excitation, which is powered on up to the carrying platform 9, is enough to adjust itself angle of inclination and lower electricity after the period of stabilization.
Valuably, wherein, the driving sliding part 619 towards between described two lock sliders 613,614 it is prominent with Convenient for connecting the contraction spring 620.
Wherein, it may be advantageous that, the carrying sliding block 611 divides for front and rear two parts, is connected therebetween with articulated shaft 612, soldered tooth Face is located at respectively on the front and rear two-part lateral surface.The articulated shaft 612 is carrying sliding block 611 and corresponding support rod 69 Articulated shaft.
According to another embodiment, the operation method of above-mentioned medical plateform system, wherein, original state is slided for the locking Block 613,614 will carry sliding block 611 and lock accordingly;When needing to adjust implementation lateral tilt angle, electricity is passed through by controller Drive circuit controls the driving motor 77 to run, and the lateral tilt angle of the adjustment platform 8 is adjusted in place;At this point, 82 elastic telescopic of elastic telescopic junction piece so as to comply with it is described adjustment platform 8 and the carrying platform 9 between relative angle; When the driving motor 77 is out of service, the electromagnetic actuator device 615, which is excited, to be powered on, thus by the carrying sliding block 611 unlock, and the carrying platform 9 gradually adjusts its lateral inclination angle under the action of the elastic telescopic junction piece 82 Degree is so as to finally consistent and reach stable state with the lateral tilt angle of the adjustment platform 8;Later, the electromagnetic actuator device 615 times electricity, so that the carrying sliding block 611 is again at lock-out state under the action of contraction spring 620.
It is located under carrying platform and the adjustment platform of resilient engagement therewith due to being provided with, by adjusting the adjustment platform Angle and Indirect method carrying platform lateral tilt angle, so as to avoid the impact of the pinion gear engaged with adjusting platform damage Wound.Since two slip bolster stakes being fixedly installed on carrier, connected by hinged support bar with carrying platform machinery It connects, therefore can operationally support the carrying platform to ensure its mechanical robustness and use reliability, and can be by Discharged to operation, so as to mechanical movement simultaneously with allow to the adjustment of the angle of carrying platform and at any time to the angle after adjustment into Row is fixed.The fixation of this angle also further ensures the impact protection for drive pinion.And it sets operationally To the carrying sliding block electromagnetic actuator device that is locked and discharged, can may be programmed or be controlled by the controller it is electric under motor when And of short duration release degree of freedom is carried out to carrying platform automatically, so as to allow carrying platform self-adjusting to conform to the angle of adjustment platform Degree.Adjust platform two elastic flexible components can play buffered with carrying platform while, also act as carrying platform Angle carry out Indirect method effect.And the front and back sides setting in carrying sliding block locks the flank of tooth, in left and right side, setting can The guiding protrusion of slip can not only ensure to carry the smooth sliding of sliding block, but also realize the locking for its position, and fully Utilize the structure space for carrying sliding block so that compact mechanical structure and stress consolidates.Pass through pinion gear and the gear part of adjustment platform Section engagement and simplify drive mechanism, avoid extend transmission chain and reduce precision and increase equipment cost and manufacture cost.It is whole A device is easy to use, reliable and can bear the impact active force during medical routine use.
In the above manner, those skilled in the art can be made within the scope of the invention according to operating mode it is various Change.

Claims (3)

1. a kind of medical plateform system, including controller, motor-drive circuit and medical stage apparatus, the medical platform dress It puts including supporting frame body(6)And the bearing frame body(6)The carrying platform being pivotally connected(9), in the carrying platform(9)'s Lower section and also with the bearing frame body(6)The adjustment platform being pivotally connected(8)And in the adjustment platform(8)Lower section and with It is fixed at the adjustment platform(8)The adjustment gear wheel segment of downside(81)The drive gear of engagement(7), the drive gear (7)It is driven by driving motor (77), the driving motor (77) passes through stent (76) and the bearing frame body(6)It is fixedly connected, The controller passes through motor-drive circuit and the driving motor(77)Electrical connection, so as to control the driving motor(77)'s Rotation, the driving motor(77)It rotates and drives the drive gear(7)Operating;Wherein, the adjustment platform(8)Left and right two Side is symmetrically provided with elastic telescopic junction piece(82), each elastic telescopic junction piece(82)By the elastic carrier at its lower end Component(83)And it is retractably installed at the adjustment platform(8)Telescopic hole in, the bearing frame body(6)The left and right sides it is also right It is fixedly installed with claiming and slides bolster stake component(61、62), the slip bolster stake component(61、62)In each be both provided with For carrying sliding block(611)The sliding cavity of the vertical direction extension of slip(610), each carrying sliding block(611)With it is corresponding Support rod(69)Lower end be hinged, two support rods(69)In each upper end and the carrying platform(9)It is corresponding Side is hinged, wherein, each carrying sliding block(611)Left and right side at be provided with slide-and-guide casting lug thereon(616)To With the sliding cavity(610)Left and right medial surface in guide groove cooperation so as to the carrying sliding block(611)Up and down motion It is oriented to, each carrying sliding block(611)Front and back sides at be provided with tooth form lock face(617)To with can institute State sliding cavity(610)Two lock sliders of middle front and back upward sliding(613、614)Correspondence toothed surface(618)Engagement, from And to the carrying sliding block(611)It is clamped locking;Described two lock sliders(613、614)In it is each in upper and lower end parts Place is provided with driving sliding part(619), in described two lock sliders(613、614)In one on driving sliding part (619)With in described two lock sliders(613、614)In another corresponding end at driving sliding part(619)Between It is provided with contraction spring(620), so that described two lock sliders(613、614)It clamps and engages corresponding carrying sliding block (611), each driving sliding part(619)Also with electromagnetic actuator device(615)Coupling, to receive the electromagnetic actuator device (615)Electromagnetic driving force so that described two lock sliders(613、614)Overcome the contraction spring(620)Receipts Contracting power and open, so as to discharge the carrying sliding block(611);Wherein, the electromagnetic actuator device(615)Be controlled by the controller with Just in the driving motor(77)Driving power falling edge be excited and power on, so as to by described two lock sliders(613、 614)It opens;The electromagnetic actuator device(615)It is powered on being excited up to the carrying platform(9)It is enough to adjust itself inclination angle Lower electricity after the period spent and stablized.
2. medical plateform system as described in claim 1, wherein, the driving sliding part(619)It is slided towards described two lockings Block(613、614)Between protrude in order to connecting the contraction spring(620).
3. the operation method of medical plateform system as claimed in claim 1 or 2, wherein, original state is the lock slider (613、614)Sliding block will be carried accordingly(611)Locking;When needing to adjust implementation lateral tilt angle, passed through by controller Motor-drive circuit controls the driving motor(77)Operation, by the adjustment platform(8)Lateral tilt angle be adjusted in place; At this point, the elastic telescopic junction piece(82)Elastic telescopic is to comply with the adjustment platform(8)With the carrying platform(9)Between Relative angle;When the driving motor(77)When out of service, the electromagnetic actuator device(615)It is excited and powers on, so as to By the carrying sliding block(611)It unlocks, the carrying platform(9)In the elastic telescopic junction piece(82)Under the action of and Gradually adjust its lateral tilt angle so as to finally with the adjustment platform(8)Lateral tilt angle it is consistent and reach stable shape State;Later, the electromagnetic actuator device(615)Lower electricity, in contraction spring(620)Under the action of so that the carrying sliding block (611)It is again at lock-out state.
CN201610095651.2A 2016-02-22 2016-02-22 A kind of operation method of medical plateform system and the system Expired - Fee Related CN105769498B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610095651.2A CN105769498B (en) 2016-02-22 2016-02-22 A kind of operation method of medical plateform system and the system

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Application Number Priority Date Filing Date Title
CN201610095651.2A CN105769498B (en) 2016-02-22 2016-02-22 A kind of operation method of medical plateform system and the system

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CN105769498B true CN105769498B (en) 2018-06-19

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2561929B2 (en) * 1987-09-17 1996-12-11 株式会社三共製作所 Upright bed device
CN2053094U (en) * 1989-08-06 1990-02-21 唐山钢铁公司 Practice bed of standing-up function for extensive burn and scald
CN202437176U (en) * 2012-01-17 2012-09-19 马琳琳 Turnover bed for ultrasound department
CN203089750U (en) * 2013-02-03 2013-07-31 张燕群 Supporting bracket for examination of cardiological patients
CN104146840A (en) * 2014-08-27 2014-11-19 苏州承乐电子科技有限公司 Left-and-right lateral medical bed

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Inventor after: Wang Anxiang

Inventor before: Shao Weijuan

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Effective date of registration: 20180516

Address after: 201799 Shanghai Qingpu District Zhujiajue Zhenkang road 901 Lane 110 1, 2 level.

Applicant after: Shanghai Dongfang Gemma gene biological science and Technology Co Ltd

Address before: 312399 Shaoxing, Zhejiang province Shangyu city 100 official street, new village, Buddha Hall 3.

Applicant before: Shao Weijuan

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