CN113476222A - Shock-absorbing stretcher for medical critical patients - Google Patents
Shock-absorbing stretcher for medical critical patients Download PDFInfo
- Publication number
- CN113476222A CN113476222A CN202110878533.XA CN202110878533A CN113476222A CN 113476222 A CN113476222 A CN 113476222A CN 202110878533 A CN202110878533 A CN 202110878533A CN 113476222 A CN113476222 A CN 113476222A
- Authority
- CN
- China
- Prior art keywords
- support
- bottom plate
- annular friction
- shock
- stretcher
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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
- A61G1/02—Stretchers with 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
- A61G1/013—Stretchers foldable or collapsible
-
- 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
Abstract
The invention discloses a damping stretcher bed for medical critical patients, belonging to the technical field of medical instruments, and comprising a bottom plate, a plurality of damping support units arranged on the bottom plate, and a locking device for independently fixing the damping support units; the backup pad is connected to and twists reverse buffer through the support link, the backup pad cushions through twisting reverse buffer when receiving torsional force, it is connected to the bottom plate through vertical buffer to twist reverse buffer's bottom, the backup pad cushions through vertical buffer when receiving vertical effort, a plurality of shock attenuation support unit's backup pad linear array in the top of bottom plate is in order to form the holding surface that is used for supporting the patient, through a flexible connection device interconnect between each backup pad. The device can adjust the state according to the actual condition of the patient, thereby avoiding secondary injury caused by forcibly moving the body and adapting to the requirements of different patients with injuries and conditions.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a damping stretcher bed for medical critical patients.
Background
The stretcher has various styles, wherein the bed board of the stretcher has different designs, and the design of the bed board is different for different patients, and the stretcher is usually designed to be foldable, heating, deodorizing and the like. In the field of critical medical care, individual patients need to keep relatively fixed posture before being sent to a hospital or treated through a stretcher, and forced lying on a flat stretcher is easy to cause secondary injury, so that a shock absorption stretcher for critical medical care is urgently needed to be provided, and the situation can be avoided.
Disclosure of Invention
In view of this, the present invention provides a shock-absorbing stretcher for critically ill patients, which can adjust the state according to the actual condition of the patient, so as to avoid the secondary injury caused by moving the body forcibly, and adapt to the needs of different patients with injuries and conditions.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention relates to a damping stretcher for medical critical patients, which comprises a bottom plate, a plurality of damping support units arranged on the bottom plate, and a locking device for independently fixing the damping support units; the damping support unit comprises a support plate, a support connecting rod, a torsion buffer device and a vertical buffer device, wherein the support plate is connected to the torsion buffer device through the support connecting rod, the support plate buffers through the torsion buffer device when receiving torsional force, the bottom of the torsion buffer device is connected to the bottom plate through the vertical buffer device, the support plate buffers through the vertical buffer device when receiving vertical acting force, the support plate linear arrays of a plurality of damping support units are arranged above the bottom plate to form a support surface for supporting a patient, and the support plates are connected with each other through a flexible connecting device.
Further, twist reverse buffer and include the dabber, fix the cover and establish dabber annular friction subassembly, swivel becket and compress tightly the end cover, the swivel becket is connected to through the support connecting rod the backup pad, the swivel becket be located between two annular friction subassemblies and with annular friction subassembly frictional contact, it compresses tightly the end cover with two annular friction subassembly compresses tightly, the backup pad drives the swivel becket rotation through the support connecting rod, the swivel becket with the energy consumption of buffering is realized in the friction between the annular friction subassembly.
Further, the annular friction components comprise a steel outer ring and a rubber inner ring fixedly arranged on the inner side of the steel outer ring, the length of the rubber inner ring is larger than that of the steel outer ring, the two annular friction components are connected with each other through the abutting of the rubber inner ring, the pressing end cover is in threaded connection with the mandrel and tightly presses the rubber inner ring through the end part of the pressing end cover, an annular friction groove matched with the rotating ring is formed in the outer side surface of the steel outer ring, and an elastic reset device used for resetting the rotating ring is arranged in the annular friction groove.
Furthermore, the bottom of the annular friction groove is provided with a stop dog, the elastic reset device comprises a spring, the spring is embedded in the annular friction groove, and two ends of the spring are respectively fixedly connected with the stop dog and the rotating ring.
Further, the vertical buffer device comprises a support and an air spring, the upper part of the support is fixedly connected with the mandrel, and the lower end of the support is connected to the bottom plate through the air spring.
Furthermore, the bottom plate is provided with a mounting hole for being embedded with the air spring.
Furthermore, the bottom of the bottom plate is provided with universal wheels.
Further, flexible connection device includes the rubber connection area, the rubber connection area along the bottom plate drive vertical setting in the bottom of backup pad and respectively with each backup pad between fixed connection.
Furthermore, locking device includes round pin axle, lateral part support and nut, the round pin axle is fixed in the tip of backup pad, seted up on the lateral part support with round pin axle complex vertical logical groove, nut and round pin axle threaded connection just will the lateral part support compresses tightly in the tip of backup pad, the lateral part support with bottom plate sliding fit.
Furthermore, the lateral support is Z-shaped, and a longitudinal groove matched with the lateral support is formed in the bottom plate.
The invention has the beneficial effects that:
according to the damping stretcher bed for the medical critical patients, the plurality of damping support units are arranged on the bottom plate, the positions of the support plates are changed due to the deformation of the torsion buffer device and the vertical buffer device in the process of lying of the patients, finally the damping support units are locked by the locking devices and are kept in a fixed state to support the patients, so that the state of the whole support surface can be adjusted according to the actual conditions of the patients, secondary injury caused by forcibly moving the body is avoided, and the requirements of different patients with injuries can be met.
In the device, the supporting plates are buffered through the torsion buffer device when receiving the torsion force, and the supporting plates are buffered through the vertical buffer device when receiving the vertical acting force, so that a patient has a certain buffering effect when lying down, the damage of the patient is reduced, the patient can easily lie in the device, and the supporting plates are mutually connected through the flexible connecting device and used for limiting the positions of the supporting plates and preventing the instability problem caused by excessive irregular movement of the supporting plates.
Additional advantages, objects, and features of the invention will be set forth in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
fig. 1 is a first schematic structural view of the stretcher of the present invention;
fig. 2 is a second schematic structural view of the stretcher of the present invention;
fig. 3 is a side view of the cot of the present invention;
FIG. 4 is a schematic structural view of the shock-absorbing support unit;
FIG. 5 is a schematic structural view of an annular friction assembly;
fig. 6 is a front view of the cot of the present invention;
fig. 7 is a schematic diagram illustrating a position change of the support plate.
The drawings are numbered as follows: the damping device comprises a bottom plate 1, a damping support unit 2, a support plate 21, a support link 22, a torsion buffer device 23, a mandrel 231, an annular friction component 232, a steel outer ring 2321, a rubber inner ring 2322, an annular friction groove 2323, a stop block 2324, a spring 2325, a rotating ring 233, a pressing end cover 234, a vertical buffer device 24, a support 241, an air spring 242, a mounting hole 243, a locking device 3, a pin shaft 31, a side support 32, a nut 33, a vertical through groove 34, a flexible connecting device 4, a universal wheel 5 and a longitudinal groove 6.
Detailed Description
As shown in fig. 1 to 3, the damping stretcher for medical treatment of critical illness according to the present invention comprises a base plate 1, a plurality of damping support units 2 disposed on the base plate 1, and a locking device 3 for individually fixing the damping support units 2; the bottom plate 1 is in a rectangular plate shape, the length of the bottom plate is about 2m approximately, the shock absorption supporting unit 2 comprises a supporting plate 21, a supporting connecting rod 22, a torsion buffer device 23 and a vertical buffer device 24, the supporting plate 21 comprises inclined plates arranged on two sides and used for limiting a patient to prevent the patient from rolling off, the supporting plate 21 is connected to the torsion buffer device 23 through the supporting connecting rod 22, the supporting plate 21 is buffered through the torsion buffer device 23 when receiving a torsional force, the bottom of the torsion buffer device 23 is connected to the bottom plate 1 through the vertical buffer device 24, the supporting plate 21 is buffered through the vertical buffer device 24 when receiving a vertical acting force, the supporting plates 21 of a plurality of shock absorption supporting units 2 are linearly arrayed above the bottom plate 1 to form a supporting surface for supporting the patient, and the distance between two adjacent supporting plates 21 cannot be too far, increase patient's comfort level, also can not be too close, prevent to press from both sides and hinder the patient, through a flexible connection device 4 interconnect between each backup pad 21 for restrict the position of backup pad 21, prevent the unstability problem that its excessive irregular motion brought.
According to the damping stretcher bed for the critical medical patients, the plurality of damping support units 2 are arranged on the bottom plate 1, in the process of lying of the patients, the positions of the support plates 21 are changed due to the deformation of the torsion buffer devices 23 and the vertical buffer devices 24, finally the damping support units 2 are locked by the locking devices 3, and the patients are supported in a fixed state, so that the state of the whole support surface can be adjusted according to the actual conditions of the patients, secondary injury caused by forced movement of the bodies is avoided, and the requirements of different patients with different injuries can be met.
In the device, the supporting plate 21 is buffered by the torsion buffer device 23 when receiving a torsion force, and the supporting plate 21 is buffered by the vertical buffer device 24 when receiving a vertical acting force, so that a patient has a certain buffer effect when lying down, the damage of the patient is reduced, the patient can lie down into the device easily, and the supporting plates 21 are connected with each other through the flexible connecting device 4.
In this embodiment, as shown in fig. 4 to 5, the torsion damping device 23 includes a core shaft 231, an annular friction component 232 fixedly sleeved on the core shaft 231, a rotating ring 233, and a pressing end cover 234, the rotating ring 233 is connected to the support plate 21 through the support link 22, the middle portion of the support link 22 is bent, which is more beneficial to transmitting force to the annular friction component 232 along a tangential direction, the rotating ring 233 is located between the two annular friction components 232 and in frictional contact with the annular friction components 232, and consumes energy through friction, the pressing end cover 234 presses the two annular friction components 232 to prevent the rotating ring 233 from coming off, the support plate 21 drives the rotating ring 233 to rotate through the support link 22, and the friction between the rotating ring 233 and the annular friction components 232 realizes buffering energy consumption.
In this embodiment, the annular friction component 232 includes a steel outer ring 2321 and a rubber inner ring 2322 fixedly disposed inside the steel outer ring 2321, and an axial length of the rubber inner ring 2322 is greater than an axial length of the steel outer ring 2321, so that two connected annular friction components 232 can be abutted by the rubber inner ring 2322, and by adjusting a pressing force of the pressing end cover 234, a distance between the annular friction components 232 can be adjusted, so as to adjust a friction force between the rotating ring 233 and the annular friction components 232, and meet requirements of different sensitivities. The compressing end cover 234 is in threaded connection with the mandrel 231 and is compressed to the rubber inner ring 2322 through the end of the compressing end cover 234, an annular friction groove 2323 matched with the rotating ring 233 is formed in the outer side face of the steel outer ring 2321, when the rotating ring 233 rotates in the annular friction groove 2323, friction is generated between the rotating ring 233 and the steel outer ring 2321 to consume energy, an elastic resetting device used for resetting the rotating ring 233 is arranged in the annular friction groove 2323, and after the locking device 3 is released, the elastic resetting device is used for driving the rotating ring 233 to return to the original position, and the original state of the support plate 21 is guaranteed.
In this embodiment, a stop 2324 is disposed at the bottom of the annular friction groove 2323, when the support plate 21 is located in a horizontal position, the stop is located at the middle position of the bottommost part of the annular friction groove 2323, the elastic resetting device includes a spring 2325, the spring 2325 is embedded in the annular friction groove 2323, the shape of the spring 2325 is adapted to the annular friction groove 2323, two ends of the spring 2325 are respectively fixedly connected to the stop 2324 and the rotating ring 233, and are used for providing an annular restoring force to the rotating ring 233, and the spring 2325 can be limited by the annular friction groove 2323, so that the entire device is more stable in a using process.
In this embodiment, as shown in fig. 6, the vertical buffer device 24 includes a support 241 and an air spring 242, the air spring 242 can provide a certain buffering force while providing a restoring force, and the installation is simple and quick, an upper portion of the support 241 is fixedly connected to the spindle 231, and a lower end of the support 241 is connected to the base plate 1 through the air spring 242.
In this embodiment, the bottom plate 1 is provided with a mounting hole 243 for fitting with the air spring 242, and the lower portion of the bottom plate can be fixedly connected to the bottom of the mounting hole 243, so that the mounting is more stable. The bottom of bottom plate 1 is installed universal wheel 5, conveniently removes.
In this embodiment, as shown in fig. 7, the flexible connection device 4 includes a rubber connection belt, the rubber connection belt is driven along the bottom plate 1 to be longitudinally disposed at the bottom of the support plates 21 and is fixedly connected to each support plate 21 through a screw, and the rubber connection belt can be deformed correspondingly according to the position change of each support plate 21, so as to achieve a connection function all the time. Are connected with each other by a flexible connecting device 4 and are used for limiting the position of the supporting plate 21 and preventing instability caused by excessive irregular movement of the supporting plate.
In this embodiment, the locking device 3 includes a pin 31, a lateral support 32 and a nut 33, the pin 31 is fixed to the end of the support plate 21, a vertical through groove 34 matched with the pin 31 is formed in the lateral support 32, the nut 33 is in threaded connection with the pin 31 and compresses the lateral support 32 against the end of the support plate 21, and the lateral support 32 is in sliding fit with the bottom plate 1. The lateral support 32 is Z-shaped, the bottom plate 1 is provided with a longitudinal groove 6 matched with the lateral support 32, when the support plate 21 deflects, the pin shaft 31 applies longitudinal acting force to the lateral support 32, the lateral support 32 can slide along the longitudinal groove 6 to adapt to the acting force, meanwhile, when the shock is absorbed vertically, the pin shaft 31 can slide vertically along the vertical through groove 34, and the vertical through groove 34 plays a certain guiding role.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. Medical treatment critical shock attenuation stretcher, its characterized in that: the damping support device comprises a bottom plate, a plurality of damping support units arranged on the bottom plate and a locking device used for independently fixing the damping support units; the damping support unit comprises a support plate, a support connecting rod, a torsion buffer device and a vertical buffer device, wherein the support plate is connected to the torsion buffer device through the support connecting rod, the support plate buffers through the torsion buffer device when receiving torsional force, the bottom of the torsion buffer device is connected to the bottom plate through the vertical buffer device, the support plate buffers through the vertical buffer device when receiving vertical acting force, the support plate linear arrays of a plurality of damping support units are arranged above the bottom plate to form a support surface for supporting a patient, and the support plates are connected with each other through a flexible connecting device.
2. The shock-absorbing stretcher for critically ill medical treatment according to claim 1, wherein: twist reverse buffer and include the dabber, fix the cover and establish annular friction subassembly, swivel becket and the end cover that compresses tightly of dabber, the swivel becket is connected to through the support connecting rod the backup pad, the swivel becket be located between two annular friction subassemblies and with annular friction subassembly frictional contact, it will two to compress tightly the end cover annular friction subassembly compresses tightly, the backup pad drives the swivel becket rotation through the support connecting rod, the swivel becket with the energy consumption of buffering is realized in the friction between the annular friction subassembly.
3. The shock-absorbing stretcher for critically ill medical treatment according to claim 2, wherein: the annular friction components comprise a steel outer ring and a rubber inner ring fixedly arranged on the inner side of the steel outer ring, the length of the rubber inner ring is larger than that of the steel outer ring, the two annular friction components are connected with each other through the butt joint of the rubber inner ring, the pressing end cover is in threaded connection with the mandrel and tightly pressed on the rubber inner ring through the end part of the pressing end cover, an annular friction groove matched with the rotating ring is formed in the outer side surface of the steel outer ring, and an elastic reset device used for resetting the rotating ring is arranged in the annular friction groove.
4. The shock-absorbing stretcher for critically ill medical treatment according to claim 3, wherein: the bottom of the annular friction groove is provided with a stop block, the elastic reset device comprises a spring, the spring is embedded in the annular friction groove, and two ends of the spring are fixedly connected with the stop block and the rotating ring respectively.
5. The shock-absorbing stretcher for critically ill medical treatment according to claim 2, wherein: the vertical buffer device comprises a support and an air spring, the upper part of the support is fixedly connected with the mandrel, and the lower end of the support is connected to the bottom plate through the air spring.
6. The shock-absorbing stretcher for critically ill medical treatment according to claim 5, wherein: and the bottom plate is provided with a mounting hole for being embedded with the air spring.
7. The shock-absorbing stretcher for critically ill medical treatment according to claim 1, wherein: the bottom of the bottom plate is provided with universal wheels.
8. The shock-absorbing stretcher for critically ill medical treatment according to claim 1, wherein: the flexible connecting device comprises a rubber connecting belt, and the rubber connecting belt is longitudinally arranged at the bottom of the supporting plates along the driving of the bottom plate and is fixedly connected with the supporting plates respectively.
9. The shock absorbing cot according to any one of claims 1 to 8, wherein: the locking device comprises a pin shaft, a lateral support and a nut, the pin shaft is fixed at the end part of the supporting plate, a vertical through groove matched with the pin shaft is formed in the lateral support, the nut is in threaded connection with the pin shaft and tightly presses the lateral support to the end part of the supporting plate, and the lateral support is in sliding fit with the bottom plate.
10. The shock absorbing stretcher for critically ill medical treatment according to claim 9, wherein: the lateral support is Z-shaped, and the bottom plate is provided with a longitudinal groove matched with the lateral support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110878533.XA CN113476222B (en) | 2021-08-02 | 2021-08-02 | Shock-absorbing stretcher for medical critical patients |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110878533.XA CN113476222B (en) | 2021-08-02 | 2021-08-02 | Shock-absorbing stretcher for medical critical patients |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113476222A true CN113476222A (en) | 2021-10-08 |
| CN113476222B CN113476222B (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110878533.XA Active CN113476222B (en) | 2021-08-02 | 2021-08-02 | Shock-absorbing stretcher for medical critical patients |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121362A (en) * | 1982-06-01 | 1983-12-21 | Lawrence K Mulholland | Improved shock-absorbing wheel suspension assembly |
| US5381572A (en) * | 1991-01-09 | 1995-01-17 | Park; Young-Go | Twist rolling bed |
| JP2974142B1 (en) * | 1998-12-11 | 1999-11-08 | パラマウントベッド株式会社 | Mounting mechanism for accessories in beds |
| JP2015039619A (en) * | 2013-08-21 | 2015-03-02 | 和博 竹田 | Mattress |
| JP2015054146A (en) * | 2013-09-13 | 2015-03-23 | オオクラエンジニアリング 株式会社 | Mount base swinging device |
| CN105877931A (en) * | 2016-05-24 | 2016-08-24 | 巢湖学院 | Four-degree-of-freedom parallel damping stretcher platform |
| CN105943259A (en) * | 2016-05-24 | 2016-09-21 | 界首市华盛塑料机械有限公司 | Stretcher with damping function |
| US20180184797A1 (en) * | 2016-12-30 | 2018-07-05 | Kelly International Corp. | Ultra-thin lifting table |
| CN108836641A (en) * | 2018-07-05 | 2018-11-20 | 杨敏 | A kind of medical damping stretcher |
| CN208838414U (en) * | 2018-05-11 | 2019-05-10 | 武汉大学 | A kind of postoperative prone bed of ophthalmic nursing |
| CN208863890U (en) * | 2018-04-11 | 2019-05-17 | 东莞市本金实业有限公司 | A kind of bed for capableing of storing |
| CN111231807A (en) * | 2020-03-16 | 2020-06-05 | 南京安科医疗科技有限公司 | Damping and horizontal lifting adjusting device for vehicle-mounted CT medical cabin and working method thereof |
| CN111317627A (en) * | 2020-03-01 | 2020-06-23 | 张小辉 | Medical multifunctional ambulance cot with damping function |
| CN112674948A (en) * | 2021-03-15 | 2021-04-20 | 孙伟 | Transfer device for newborn pediatric clinic |
-
2021
- 2021-08-02 CN CN202110878533.XA patent/CN113476222B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121362A (en) * | 1982-06-01 | 1983-12-21 | Lawrence K Mulholland | Improved shock-absorbing wheel suspension assembly |
| US5381572A (en) * | 1991-01-09 | 1995-01-17 | Park; Young-Go | Twist rolling bed |
| JP2974142B1 (en) * | 1998-12-11 | 1999-11-08 | パラマウントベッド株式会社 | Mounting mechanism for accessories in beds |
| JP2015039619A (en) * | 2013-08-21 | 2015-03-02 | 和博 竹田 | Mattress |
| JP2015054146A (en) * | 2013-09-13 | 2015-03-23 | オオクラエンジニアリング 株式会社 | Mount base swinging device |
| CN105943259A (en) * | 2016-05-24 | 2016-09-21 | 界首市华盛塑料机械有限公司 | Stretcher with damping function |
| CN105877931A (en) * | 2016-05-24 | 2016-08-24 | 巢湖学院 | Four-degree-of-freedom parallel damping stretcher platform |
| US20180184797A1 (en) * | 2016-12-30 | 2018-07-05 | Kelly International Corp. | Ultra-thin lifting table |
| CN208863890U (en) * | 2018-04-11 | 2019-05-17 | 东莞市本金实业有限公司 | A kind of bed for capableing of storing |
| CN208838414U (en) * | 2018-05-11 | 2019-05-10 | 武汉大学 | A kind of postoperative prone bed of ophthalmic nursing |
| CN108836641A (en) * | 2018-07-05 | 2018-11-20 | 杨敏 | A kind of medical damping stretcher |
| CN111317627A (en) * | 2020-03-01 | 2020-06-23 | 张小辉 | Medical multifunctional ambulance cot with damping function |
| CN111231807A (en) * | 2020-03-16 | 2020-06-05 | 南京安科医疗科技有限公司 | Damping and horizontal lifting adjusting device for vehicle-mounted CT medical cabin and working method thereof |
| CN112674948A (en) * | 2021-03-15 | 2021-04-20 | 孙伟 | Transfer device for newborn pediatric clinic |
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| Publication number | Publication date |
|---|---|
| CN113476222B (en) | 2022-09-20 |
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