CN114224666A - Operating bed - Google Patents
Operating bed Download PDFInfo
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- CN114224666A CN114224666A CN202210024470.6A CN202210024470A CN114224666A CN 114224666 A CN114224666 A CN 114224666A CN 202210024470 A CN202210024470 A CN 202210024470A CN 114224666 A CN114224666 A CN 114224666A
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- bed body
- bed
- mattresses
- temperature
- rotatably connected
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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
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/02—Adjustable operating tables; Controls therefor
- A61G13/08—Adjustable operating tables; Controls therefor the table being divided into different adjustable sections
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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
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
-
- 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
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
- A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
- A61G13/126—Rests specially adapted therefor; Arrangements of patient-supporting surfaces with specific supporting surface
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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
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
- A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
- A61G13/126—Rests specially adapted therefor; Arrangements of patient-supporting surfaces with specific supporting surface
- A61G13/127—Rests specially adapted therefor; Arrangements of patient-supporting surfaces with specific supporting surface having chambers filled with liquid or gel
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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
- A61G2210/00—Devices for specific treatment or diagnosis
Abstract
The invention discloses an operating bed, which comprises a bed frame mechanism, four mattresses and a temperature changing system, wherein a base in the bed frame mechanism can be stably placed on the ground, a lifting column is arranged on the upper side of the base and forms a moving pair, an electric lifting mechanism is arranged between the base and the lifting column, a bandage is arranged on a second bed body and is rotatably connected with the lifting column, a first bed body is rotatably connected with the second bed body, a third bed body is rotatably connected with the second bed body, a fourth bed body is rotatably connected with the third bed body, the four mattresses are all made of soft silica gel materials, closed cavity structures filled with paraffin materials are arranged in the four mattresses, heat exchange tubes are arranged in the four mattresses, and the four mattresses are respectively arranged on the first bed body, the second bed body, the third bed body and the fourth bed body; the temperature-changing bin is internally integrated with a heating device and a cooling device, is communicated with heat exchange tubes in the four mattresses through eight pipelines, and takes a refrigerant as a heat transfer substance to realize the conversion between solid and liquid states of paraffin in the four mattresses.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an operating table.
Background
The incidence rate of pressure sores in the operation is an important index for evaluating the nursing quality of the operation, and the operation patients are high-incidence groups of pressure sores in the operation; because of the operation requirement, the patient is often put into various passive lying positions in the operation, the muscle tissue of the patient is in a complete relaxation state under the anesthesia state, the consciousness disappears, the body sensation threshold value is reduced, the stress response uncomfortable to the body is temporarily lost, after a position is kept for a long time, the patient can not independently shift and relieve the continuous pressed part, the blood vessel cavity of the pressed part is narrowed or even disappears, the local blood circulation disorder is caused, the continuous ischemia, the hypoxia and the malnutrition cause the soft tissue ulceration and the necrosis, and the pressure sore is formed.
Pressure sores usually occur at the carina or at a location where pressure is applied for a long period of time, and can manifest as local tissue damage with intact epidermis or open ulceration, with pain, and the pressure sore lesions suffered by the patient during surgery often manifest as symptoms 1-3 days after surgery; during operation, pressure sores are positively correlated with operation time, irreversible injury can occur when a patient keeps an operation position for more than 2 hours, the occurrence rate of pressure injury is increased by 33% every 30 minutes, and pressure sore injury inevitably occurs after the operation lasts for 4 hours; therefore, in a long-time operation, medical staff needs to support the body of a patient by using various gel cushions so as to increase the supporting area of the body of the patient and reduce the pressure sore injury; because patients are different in body type, illness state and operation body position, the types of needed gel cushions are dozens of types, the gel cushions are complicated to use, and the cushion can be pressed for a long time to cause pressure sore injuries with different degrees, so that the development of the operating bed which can adapt to various body types and body positions and can reduce or eliminate pressure sores in the operation has obvious significance.
Disclosure of Invention
To overcome the disadvantages of the prior art, the present invention provides an operating bed with a variable support surface configuration, which is used to increase the contact surface with the patient and reduce the pressure per unit area.
The technical scheme adopted by the invention is as follows: an operating bed comprises a bed frame mechanism, four mattresses and a temperature changing system; wherein the base among the bedstead mechanism can be stably placed on subaerial, the lift post is installed in the base upside and is constituted the sliding pair, install electronic elevating system between base and the lift post, can realize the altitude mixture control and the location of operation table, the second bed body rotates with the lift post to be connected, the steerable operation table of second electricity jar angle of pitch, be equipped with the bandage on the second bed body, first bed body rotates with the second bed body to be connected, the steerable first bed body of first electricity jar angle of rotation, the third bed body rotates with the second bed body to be connected, the steerable third bed body of third electricity jar angle of rotation, the fourth bed body rotates with the third bed body to be connected, the steerable fourth bed body angle of rotation of fourth electricity jar.
Preferably, the four mattresses are made of soft silica gel, a closed cavity structure is arranged in the four mattresses, the cavity structure is filled with paraffin materials, heat exchange tubes are arranged in the cavity structures in the four mattresses, and the four mattresses are respectively installed on the first bed body, the second bed body, the third bed body and the fourth bed body.
Preferably, a temperature change bin in the temperature change system is fixedly mounted on the side surface of the operating table, a heating device and a cooling device are integrated in the temperature change bin, the temperature change bin is communicated with heat exchange tubes in four mattresses through eight pipelines, and the temperature change bin uses a refrigerant as a heat transfer substance to enable paraffin in the four mattresses to realize conversion between a solid state and a liquid state.
Preferably, the refrigerant is purified water.
Preferably, the heat exchange tube is made of a copper tube with good heat conductivity, and the heat exchange tube is of a reciprocating bending structure so as to increase the heat exchange area.
Preferably, the paraffin wax in the four mattresses is of the formula C22H46The paraffin wax of (1).
Preferably, the two ends of the binding band are provided with sliding blocks with adjustable positions, and the sliding blocks are provided with locking rods capable of locking the position of the binding band.
Preferably, the lifting operation of the operating table and the extension and retraction of each electric cylinder are controlled by the upper computer according to the operation requirement.
Preferably, the temperature-changing bin can control the temperature of the four mattresses and continuously provide heat for the patient, so that the patient is prevented from having hypothermia complications in the operation.
The invention has the beneficial effects that: when the paraffin is in a liquid state, the four mattresses can be in a flowing state, so that the four mattresses can be in full contact with the body of a patient, the contact area is increased to the maximum extent, the supporting pressure per unit area is reduced, the patient has good use experience, and the pressure sore occurrence rate can be reduced; secondly, after the body position of the patient is placed, paraffin is changed into solid, so that the patient can be stably supported, and the operation effect is prevented from being influenced after the body of the patient is displaced; the four mattresses can regulate the temperature within a certain range to provide heat for the patient continuously, so as to prevent the patient from having hypothermia complications in the operation; the position and the tightness of the binding belt are adjustable, the binding belt can be quickly connected and opened, and the use is flexible and convenient; the inclination angle of each bed body in the operation bed can be adjusted to meet the position placing requirement of the patient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is a partial side view of the present invention.
Fig. 4 is a partial cross-sectional view of the second pad.
Reference numerals: the electric bed comprises a base 1, a lifting column 2, a first connecting lug 2.1, a second bed body 3, a guide rail 3.1, a third connecting lug 3.2, a fourth connecting lug 3.3, a fifth connecting lug 3.4, a first bed body 4, a second connecting lug 4.1, a first cushion 5, a first bandage 6, a slider 6.1, a locking rod 6.2, a second cushion 7, a heat exchange tube 7.1, a second bandage 8, a third cushion 9, a third bandage 10, a fourth cushion 11, a fourth bed body 12, a seventh connecting lug 12.1, a third bed body 13, a sixth connecting lug 13.1, a first tube 14, a second tube 15, a third tube 16, a fourth tube 17, a temperature-changing bin 18, an eighth tube 19, a seventh tube 20, a sixth tube 21, a fifth tube 22, a first electric cylinder 23, a second electric cylinder 24, a third electric cylinder 25 and a fourth electric cylinder 26.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the lower end of the base 1 is provided with a square base, the square base can be stably placed on the ground, a rectangular lightening hole is formed in the square base, a square guide cylinder is arranged on the upper side of the base 1, the lifting column 2 is of a square structure, the lifting column 2 is installed in the square guide cylinder on the upper side of the base 1 and forms a moving pair, an electric lifting mechanism is installed between the base 1 and the lifting column 2, the height adjustment and the positioning of the operating table can be realized, the rear side of the upper end of the lifting column 2 is transversely provided with a round hole, and the front side of the upper end of the lifting column 2 is provided with a first connecting lug 2.1.
As shown in fig. 1 and 3, the second bed body 3 is a square frame structure with baffles on two sides, guide rails 3.1 are arranged on two sides of the second bed body 3, the guide rails 3.1 can be used for connecting expansion equipment, the rear end of the lower side of the second bed body 3 is rotatably connected with a round hole at the upper end of the lifting column 2, a third engaging lug 3.2, two transverse coaxial fourth engaging lugs 3.3 and two transverse coaxial fifth engaging lugs 3.4 are arranged on the lower side of the second bed body 3, an encoder and a brake are integrated in the second electric cylinder 24, the extension amount and locking positioning of the second electric cylinder 24 can be accurately controlled, the lower end of the second electric cylinder 24 is rotatably connected with the first connecting lug 2.1, the upper end of the second electric cylinder 24 is rotatably connected with the third connecting lug 3.2, so that the second electric cylinder 24 can control the pitch angle of the operating table, namely, the front end of the operation bed can be rotated upwards by extending the second electric cylinder 24, and the front end of the operation bed can be rotated downwards by contracting the second electric cylinder 24.
The first bed body 4 is a square frame structure with baffles on the front side and two sides, guide rails for connecting expansion equipment are arranged on the front side and two sides of the first bed body 4, the rear end of the first bed body 4 is rotatably connected with the front end of the second bed body 3, two second connecting lugs 4.1 which are transversely coaxial are arranged on the lower side of the first bed body 4, lightening holes are formed in the two second connecting lugs 4.1, encoders and brakes are integrated in the two first electric cylinders 23, the extension amount and locking positioning of the first electric cylinders 23 can be accurately controlled, the front ends of the two first electric cylinders 23 are respectively and rotatably connected with the two second connecting lugs 4.1, the rear ends of the two first electric cylinders 23 are respectively and rotatably connected with the corresponding two fifth connecting lugs 3.4, so that the first electric cylinders 23 can control the rotation angle of the first bed body 4, that is, the front end of the first bed body 4 can be rotated upwards by extending the first electric cylinder 23, and the front end of the first bed body 4 can be rotated downwards by contracting the first electric cylinder 23.
The third bed body 13 is a square frame structure with baffles on two sides, guide rails for connecting expansion equipment are arranged on two side surfaces of the third bed body 13, the front end of the third bed body 13 is rotatably connected with the rear end of the second bed body 3, two transversely symmetrical sixth connecting lugs 13.1 are arranged at the front end of the lower side of the third bed body 13, lightening holes are arranged in the two sixth connecting lugs 13.1, an encoder and a brake are integrated in the two third electric cylinders 25, the extension amount and locking positioning of the third electric cylinders 25 can be accurately controlled, the front ends of the two third electric cylinders 25 are respectively and rotatably connected with the round holes at the front ends of the two sixth connecting lugs 13.1, the rear ends of the two third electric cylinders 25 are respectively and rotatably connected with the corresponding two fourth connecting lugs 3.3, so that the third electric cylinders 25 can control the rotation angle of the third bed body 13, that is, the rear end of the third bed body 13 can be rotated upward by extending the third electric cylinder 25, and the rear end of the third bed body 13 can be rotated downward by contracting the third electric cylinder 25.
The fourth bed body 12 is a square frame structure with baffles on the rear side and two sides, the front end of the fourth bed body 12 is rotatably connected with the rear end of the third bed body 13, two horizontal coaxial seventh connecting lugs 12.1 are arranged on the lower side of the fourth bed body 12, lightening holes are formed in the two seventh connecting lugs 12.1, an encoder and a brake are integrated in the two fourth electric cylinders 26, the extension amount and locking positioning of the fourth electric cylinders 26 can be accurately controlled, the rear ends of the two fourth electric cylinders 26 are respectively rotatably connected with the round holes in the rear ends of the two sixth connecting lugs 13.1, the front ends of the two fourth electric cylinders 26 are respectively rotatably connected with the corresponding two seventh connecting lugs 12.1, so that the rotation angle of the fourth bed body 12 can be controlled by the fourth electric cylinders 26, that is, the rear ends of the fourth bed body 12 can be rotated upwards by the extension of the fourth electric cylinders 26, and the rear ends of the fourth bed body 12 can be rotated downwards by the contraction of the fourth electric cylinders 26.
As shown in FIG. 4, the second pad 7 is made of soft silica gel, and has a closed cavity structure filled with a material of formula C22H46Of paraffin material, C22H46The melting point of the paraffin wax is about 44 ℃, i.e. C at a temperature below 44 ℃22H46Paraffin is solid, and the temperature is higher than 44 ℃ C22H46Paraffin is in liquid state, a heat exchange tube 7.1 is arranged at the bottom side of the cavity structure in the second pad 7, and the heat exchange tube 7.1 is in a bent copper tube structure so as to increase the volume and the volume C22H46The contact area of paraffin improves the heat exchange efficiency, the interfaces at the two ends of the heat exchange tube 7.1 are respectively an inlet and an outlet, and the inlet and the outlet are arranged at the outer side of the second pad 7; the second cushion 7 is fixedly arranged in the square frame structure of the second bed body 3; the first pad 5 is made of soft silica gel, and a closed cavity structure is arranged in the first padIs full of molecular formula C22H46The paraffin material, the bottom side of the cavity structure in the first cushion 5 is provided with a copper heat exchange tube with a bent shape, the inlet and the outlet of the heat exchange tube are both arranged outside the first cushion 5, and the first cushion 5 is fixedly arranged in the square frame structure of the first bed body 4; the third pad 9 is made of soft silica gel, a closed cavity structure is arranged in the third pad, and the cavity structure is filled with a material with a molecular formula of C22H46The bottom side of the cavity structure in the third cushion 9 is provided with a copper heat exchange tube with a bent shape, the inlet and the outlet of the heat exchange tube are both arranged outside the third cushion 9, and the third cushion 9 is fixedly arranged in the square frame structure of the third bed body 13; the fourth pad 11 is made of soft silica gel, a closed cavity structure is arranged in the fourth pad, and the cavity structure is filled with a material with a molecular formula of C22H46The bottom side of the cavity structure in the fourth pad 11 is provided with a copper heat exchange tube with a bent shape, the inlet and the outlet of the heat exchange tube are both arranged at the outer side of the fourth pad 11, and the fourth pad 11 is fixedly arranged in the square frame structure of the fourth bed body 12.
The two ends of the first binding belt 6 are provided with sliding blocks 6.1, the sliding blocks 6.1 can be mounted on a guide rail on the side surface of the second bed body 3, the sliding blocks 6.1 are provided with locking rods 6.2, and the locking rods 6.2 can lock the positions of the sliding blocks 6.1, so that the position locking of the first binding belt 6 is realized, the tightness of the first binding belt 6 can be adjusted, and the quick connection and the quick opening can be realized through a buckle structure; the second bandage 8 and the third bandage 10 have the same structure as the first bandage 6, and are mounted on the third bed body 13.
As shown in fig. 2, the temperature-changing cabin 18 is fixedly installed on the side surface of the base 1, a temperature control device is arranged in the temperature-changing cabin, the first pipe 14 is a heat-insulating flexible pipe, the upper end of the first pipe is communicated with the inlet of the heat exchange pipe in the first pad 5, the second pipe 15 is a heat-insulating flexible pipe, the upper end of the second pipe is communicated with the outlet of the heat exchange pipe in the first pad 5, and the lower ends of the first pipe 14 and the second pipe 15 are communicated with the temperature-changing cabin 18; the third pipe 16 is a heat-insulating hose, the upper end of the third pipe is communicated with the inlet of the heat exchange pipe 7.1 in the second cushion 7, the fourth pipe 17 is a heat-insulating hose, the upper end of the fourth pipe is communicated with the outlet of the heat exchange pipe 7.1 in the second cushion 7, and the lower ends of the third pipe 16 and the fourth pipe 17 are communicated with the temperature-changing bin 18; the fifth pipe 22 is a heat-insulating hose, the upper end of the fifth pipe is communicated with the inlet of the heat exchange pipe in the third pad 9, the sixth pipe 21 is a heat-insulating hose, the upper end of the sixth pipe is communicated with the outlet of the heat exchange pipe in the third pad 9, and the lower ends of the fifth pipe 22 and the sixth pipe 21 are communicated with the temperature-changing bin 18; the seventh pipe 20 is a heat preservation hose, the upper end of the seventh pipe is communicated with the inlet of the heat exchange pipe in the fourth pad 11, the eighth pipe 19 is a heat preservation hose, the upper end of the eighth pipe is communicated with the outlet of the heat exchange pipe in the third pad 9, and the lower ends of the seventh pipe 20 and the eighth pipe 19 are communicated with the temperature changing bin 18.
The first embodiment is as follows: the lifting action of the operating bed and the extension of each electric cylinder can be controlled by the upper computer according to the operation requirement.
Example two: under the normal temperature state, the paraffin in each cushion is in a solid state, a heating device in a pre-operation temperature-changing bin 18 heats purified water serving as a refrigerant to 46 ℃, then hot water is respectively input into heat-exchanging pipes in a first cushion 5, a second cushion 7, a third cushion 9 and a fourth cushion 11 through a first pipe 14, a third pipe 16, a fifth pipe 22 and a seventh pipe 20, the heat in the hot water is transferred into the paraffin in each cushion through the heat-exchanging pipes, so that the solid paraffin is gradually melted into a liquid state, the cooled hot water respectively flows back into the temperature-changing bin 18 through a second pipe 15, a fourth pipe 17, a sixth pipe 21 and an eighth pipe 19, after multiple heating cycles until the paraffin in each cushion is completely melted into the liquid state, a patient is placed on an operation bed and is placed into a proper position according to the operation requirement and fixed by a bandage, so that the four mattresses can be deformed under the pressure of the body of the patient and fully contact with the body of the patient, then the cooling device in the temperature-changing bin 18 cools the purified water to 37 ℃, and the cooled purified water is respectively input into the heat-exchanging pipes in the first pad 5, the second pad 7, the third pad 9 and the fourth pad 11, the heat in the liquid paraffin is transferred into the purified water through the heat-exchanging pipes, so that the paraffin is cooled and gradually changed from the liquid state to the solid state, the heated purified water respectively flows back into the temperature-changing bin 18 through the second pipe 15, the fourth pipe 17, the sixth pipe 21 and the eighth pipe 19, and the temperature-reducing circulation is carried out for a plurality of times until all the liquid paraffin in each pad is changed into the solid state, and then the operation can be carried out on the patient.
Claims (7)
1. An operating bed comprises a bed frame mechanism, four mattresses and a temperature changing system;
a base in the bed frame mechanism can be stably placed on the ground, a lifting column is installed on the upper side of the base and forms a moving pair, an electric lifting mechanism is installed between the base and the lifting column, the height adjustment and the positioning of the operating bed can be realized, a second bed body is rotatably connected with the lifting column, a second electric cylinder can control the pitching angle of the operating bed, a bandage is arranged on the second bed body, the first bed body is rotatably connected with the second bed body, the first electric cylinder can control the rotating angle of the first bed body, a third bed body is rotatably connected with the second bed body, the third electric cylinder can control the rotating angle of the third bed body, a fourth bed body is rotatably connected with the third bed body, and a fourth electric cylinder can control the rotating angle of the fourth bed body;
the four mattresses are all made of soft silica gel, a closed cavity structure is arranged in each mattress, paraffin materials are filled in the cavity structures, heat exchange tubes are arranged in the cavity structures in the four mattresses, and the four mattresses are respectively arranged on the first bed body, the second bed body, the third bed body and the fourth bed body;
the temperature-changing bin in the temperature-changing system is fixedly arranged on the side face of the operating bed, a heating device and a cooling device are integrated in the temperature-changing bin, the temperature-changing bin is communicated with the heat-exchanging pipes in the four mattresses through eight pipelines, and the temperature-changing bin uses refrigerants as heat-transferring substances to enable paraffin in the four mattresses to realize conversion between solid state and liquid state.
2. An operating bed according to claim 1, characterized in that: the refrigerant can be purified water.
3. An operating bed according to claim 1, characterized in that: the heat exchange tube is made of a copper tube with good heat conducting performance and is of a reciprocating bending structure so as to increase the heat exchange area.
4. An operating bed according to claim 1, characterized in that: of said four mattressesThe paraffin wax being of the formula C22H46The paraffin wax of (1).
5. An operating bed according to claim 1, characterized in that: the bandage both ends be provided with the slider of adjustable position, be provided with the locking pole that can lock the bandage position on the slider.
6. An operating bed according to claim 1, characterized in that: the lifting action of the operating bed and the extension of each electric cylinder can be controlled by the upper computer according to the operation requirement.
7. An operating bed according to claim 1, characterized in that: the temperature-changing bin can control the temperature of the four mattresses and continuously provide heat for the patient, so that hypothermia complications of the patient in the operation are avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024470.6A CN114224666A (en) | 2022-01-11 | 2022-01-11 | Operating bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024470.6A CN114224666A (en) | 2022-01-11 | 2022-01-11 | Operating bed |
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| CN114224666A true CN114224666A (en) | 2022-03-25 |
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| CN202210024470.6A Pending CN114224666A (en) | 2022-01-11 | 2022-01-11 | Operating bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114732650A (en) * | 2022-05-17 | 2022-07-12 | 北京大学第三医院（北京大学第三临床医学院） | Temperature-adjustable multifunctional integrated transshipment operating table |
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