CN111419665A - Air wave pressure therapeutic instrument - Google Patents
Air wave pressure therapeutic instrument Download PDFInfo
- Publication number
- CN111419665A CN111419665A CN202010297700.7A CN202010297700A CN111419665A CN 111419665 A CN111419665 A CN 111419665A CN 202010297700 A CN202010297700 A CN 202010297700A CN 111419665 A CN111419665 A CN 111419665A
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- Prior art keywords
- air
- telescopic rod
- electric telescopic
- lead
- controller
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- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 208000014987 limb edema Diseases 0.000 description 1
- 230000004089 microcirculation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H9/00—Pneumatic or hydraulic massage
- A61H9/005—Pneumatic massage
- A61H9/0078—Pneumatic massage with intermittent or alternately inflated bladders or cuffs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
- A61H2201/165—Wearable interfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/50—Control means thereof
- A61H2201/5056—Control means thereof pneumatically controlled
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/50—Control means thereof
- A61H2201/5058—Sensors or detectors
- A61H2201/5071—Pressure sensors
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Massaging Devices (AREA)
Abstract
The invention discloses an air wave pressure therapeutic instrument, relates to the field of medical supplies, and provides an air wave pressure therapeutic instrument with a more simplified structure. The air wave pressure therapeutic apparatus comprises a host and a limb sleeve, wherein the limb sleeve comprises a plurality of air bags, and the host can circularly inflate and deflate the air bags; the limb sleeve comprises an air valve, a lead joint, an air pipe and an air pipe joint; the air valves are arranged and connected with the air bags in a one-to-one correspondence manner, the leads are arranged and connected with the air valves in a one-to-one correspondence manner, and the lead joints are connected with the leads; the air pipe is connected with each air valve, and the air pipe joint is connected with the air pipe; the main machine comprises a cylinder, an electric telescopic rod and a controller, wherein the electric telescopic rod is connected with a piston of the cylinder; the air pipe is connected with the main machine through an air pipe joint and communicated with a cylinder barrel of the air cylinder; the lead is connected with the host through a lead joint and is electrically connected with the controller; the controller can control each pneumatic valve to open in proper order and electric telescopic rod is flexible when the pneumatic valve is opened.
Description
Technical Field
The invention relates to the field of medical supplies, in particular to an air wave pressure therapeutic instrument.
Background
The air wave pressure therapeutic instrument comprises a host and a limb sleeve, wherein the limb sleeve comprises a plurality of air bags, and the host can circularly inflate and deflate the air bags. The limb is sleeved on the limb of the patient, and the air bags are inflated and deflated circularly to form the circulating pressure on the limb, so that the far end and the near end of the limb are extruded uniformly and orderly; has the effects of promoting blood flow, improving microcirculation, accelerating limb tissue fluid backflow, preventing thrombosis, preventing limb edema and the like.
As shown in figure 1, the common air wave pressure therapeutic apparatus comprises a limb sleeve and air tubes, wherein the air tubes are correspondingly arranged and connected with air bags one by one, each air tube is connected with the air tube connector, and the air tube connectors are used for connecting a host. One air pipe inflates one air bag, and an air pump, a controller, a valve and the like are arranged in the main machine to circularly supply air to each air pipe, so that the air bag is circularly inflated and deflated.
The air wave pressure therapeutic apparatus has the disadvantages that the number of air pipes is large, the thickness of the air pipes is thick, the air pipe joints are correspondingly large, the structure of the limb sleeve is complicated, the weight of the limb sleeve is large, and the wearing and the use of a patient are not facilitated. In order to avoid the complicated pipeline, the existing limb sleeve is generally provided with four air bags, and the far end to the near end of the limb can be extruded for four times in one circulation, so that the number of the air bags is not favorably increased further, and the extrusion treatment effect is improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides an air wave pressure therapeutic apparatus with a more simplified structure.
The technical scheme adopted for solving the problems is as follows: the air wave pressure therapeutic apparatus comprises a host and a limb sleeve, wherein the limb sleeve comprises a plurality of air bags, and the host can circularly inflate and deflate the air bags; the limb sleeve comprises an air valve, a lead joint, an air pipe and an air pipe joint; the air valves are arranged and connected with the air bags in a one-to-one correspondence manner, the leads are arranged and connected with the air valves in a one-to-one correspondence manner, and the lead joints are connected with the leads; the air pipe is connected with each air valve, and the air pipe joint is connected with the air pipe; the main machine comprises a cylinder, an electric telescopic rod and a controller, wherein the electric telescopic rod is connected with a piston of the cylinder; the air pipe is connected with the main machine through an air pipe joint and communicated with a cylinder barrel of the air cylinder; the lead is connected with the host through a lead joint and is electrically connected with the controller; the controller can control each pneumatic valve to open in proper order and electric telescopic rod is flexible when the pneumatic valve is opened.
Further, the method comprises the following steps: the number of the wire joints is one, each wire is integrated into a wire assembly, and the wire joints are connected with the wire assembly.
Further, the method comprises the following steps: the wire connector is connected with the air pipe connector.
Further, the method comprises the following steps: the air wave pressure therapeutic instrument comprises an air pressure sensor, the air pressure sensor is electrically connected with a controller and can detect air pressure in a cylinder barrel, and when the measured value of the air pressure sensor reaches a set value, the controller controls the electric telescopic rod to stop extending.
Further, the method comprises the following steps: the air wave pressure therapeutic apparatus comprises a stroke detection structure, wherein the stroke detection structure is electrically connected with the controller and can detect the extension amount of the electric telescopic rod; the controller controls the electric telescopic rod according to the measured value of the stroke detection structure, so that the retraction stroke and the extension stroke of the electric telescopic rod are the same in one-time expansion.
Further, the method comprises the following steps: the air wave pressure therapeutic apparatus comprises an air supply switch, the air supply switch is electrically connected with the controller, and when the air supply switch is turned on, the controller controls the electric telescopic rod to retract.
Further, the method comprises the following steps: the air wave pressure therapeutic apparatus comprises a safety valve which is communicated with the inner space of the cylinder.
The invention has the beneficial effects that: 1. compared with the figures 2 and 1, the connecting pipe line of the limb sleeve and the main machine is changed from a plurality of existing air pipes into one air pipe, a plurality of conducting wires and a plurality of air valves. Compared with the air pipe, the air valve is small in size and weight, and the air pipe connector and the wire connector are lighter than the existing air pipe connector. Therefore, the pipeline structure of the limb sleeve is relatively simplified, the weight is lighter, and the limb sleeve is convenient for a patient to wear and use. Because the structure of the limb sleeve is simplified, and the arrangement of more air bags does not lead to the complicated pipelines and lines of the limb sleeve and the obvious increase of the weight, the invention is beneficial to arranging more air bags, thereby improving the treatment effect.
2. The existing main machine structure is not suitable for the mode that one air pipe supplies air to all air bags, and the main machine structure is changed, so that the main machine structure is suitable for the working mode that one air pipe supplies air to all air bags. The structure of the host is also simplified.
Drawings
FIG. 1 is a schematic diagram of a conventional air wave pressure therapeutic apparatus;
FIG. 2 is a structural view of the air wave pressure treatment apparatus of the present invention;
FIG. 3 is a main frame of the air wave pressure therapeutic apparatus of the present invention;
labeled as: the device comprises a main machine 1, a cylinder 11, a cylinder 111, a piston 112, an electric telescopic rod 12, a controller 13, an air pressure sensor 14, a stroke detection structure 15, an air supplement switch 16, a safety valve 17, a limb sleeve 2, an air bag 21, an air pipe 22, an air pipe connector 23, an air valve 24, a lead 25 and a lead connector 26.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1 and 2: the air wave pressure therapeutic instrument comprises a host machine 1 and a limb sleeve 2, wherein the limb sleeve 2 comprises a plurality of air cells 21, and the host machine 1 can circularly inflate and deflate the air cells 21; the limb sleeve 2 comprises an air valve 24, a lead 25, a lead connector 26, an air pipe 22 and an air pipe connector 23; the air valves 24 are arranged and connected with the air bags 21 in a one-to-one correspondence manner, the leads 25 are arranged and connected with the air valves 24 in a one-to-one correspondence manner, and the lead connectors 26 are connected with the leads 25; the air pipe 22 is connected with each air valve 24, and the air pipe joint 23 is connected with the air pipe 22; the main machine 1 comprises a cylinder 11, an electric telescopic rod 12 and a controller 13, wherein the electric telescopic rod 12 is connected with a piston 112 of the cylinder 11; the air pipe 22 is connected with the main machine 1 through an air pipe joint 23 and communicated with a cylinder barrel 111 of the air cylinder 11; the lead 25 is connected with the host 1 and electrically connected with the controller 13 through a lead connector 26; the controller 13 can control the air valves 24 to be opened in sequence and the electric telescopic rod 12 stretches when the air valves 24 are opened.
When the invention is used, the limb sleeve 2 is worn on the limb of a patient, and the air pipe joint 23 and the lead joint 26 are connected with the main machine 1. The controller 13 controls an air valve 24 to be opened, and controls the electric telescopic rod 12 to extend after a very short time, so as to drive the piston 112 to advance and inflate the air bag 21 to realize limb extrusion; then the electric telescopic rod 12 is shortened, the piston 112 is driven to retreat, the gas in the air bag 21 is sucked out, and the gas valve is controlled to be closed after a very short time; thus, the inflation and deflation of one air bag 21 are realized. The respective air cells 21 are inflated and deflated in this order.
The air cylinder 11, the electric telescopic rod 12, the controller 13 and the air valve 24 are all adopted in the prior art, and the air valve 24 is normally closed and is opened when being electrified. The lead 25 may be connected to the trachea 22.
In order to further simplify the structure, the present invention preferably has one wire connector 26, each wire 25 is integrated into one wire assembly, and the wire connector 26 is connected to the wire assembly. Thus, only one wire connector 26 is arranged to be connected with the main machine 1, and the structure of the limb sleeve 2 is further simplified. Also for further simplification of the structure, the present invention preferably has the wire connector 26 connected to the air pipe connector 23. Therefore, the wire connector 26 and the air pipe connector 23 can be connected or disconnected with the host 1 at the same time by only one-time plugging, and the operation is more convenient.
The invention should control the elongation of the electric telescopic rod 12, thereby controlling the movement of the piston 112 and further controlling the inflation quantity of the air bag 21, and not only avoid the pressure on the limb from being too large, but also avoid the damage of the air bag 21 or other parts. The specific control mode is as follows: the air wave pressure therapeutic apparatus comprises an air pressure sensor 14, wherein the air pressure sensor 14 is electrically connected with the controller 13 and can detect the air pressure in the cylinder 111, and when the value measured by the air pressure sensor 14 reaches a set value, the controller 13 controls the electric telescopic rod 12 to stop extending.
The invention should control the retraction amount of the electric telescopic rod 12, and avoid the damage of the air bag 21 or other parts caused by the continuous shortening of the electric telescopic rod 12 after the air in the air bag 21 is sucked. The specific control mode is as follows: the air wave pressure therapeutic apparatus comprises a stroke detection structure 15, wherein the stroke detection structure 15 is electrically connected with the controller 13 and can detect the elongation of the electric telescopic rod 12; the controller 13 controls the electric telescopic rod 12 according to the value measured by the stroke detection structure 15, so that the retraction stroke and the extension stroke of the electric telescopic rod 12 are the same in one expansion and contraction. Therefore, the inflating quantity and the suction quantity of the air bag 21 by the main machine 1 are the same, and excessive suction can be avoided. The stroke detection structure 15 can be a distance detection probe and a detection plate, and the distance detection probe detects the distance between itself and the detection plate, so that the stroke detection of the electric telescopic rod 12 is realized, and the stroke detection of the air cylinder 11 is also realized. Of course, the stroke detection structure 15 can be implemented by other conventional methods.
The gas of the present invention circulates in the airbag 21 and the cylinder 11, and the airbag 21 and the cylinder 11 do not suck air from the outside. However, as the sealing is difficult to avoid and is not absolutely reliable, the gas in the air bag 21 and the air cylinder 11 of the invention is difficult to avoid and consume to cause insufficient gas quantity along with long-time use, and the use requirement is difficult to meet. For this purpose, the following settings can be made: the air wave pressure therapeutic apparatus comprises an air supply switch 16, the air supply switch 16 is electrically connected with the controller 13, and when the air supply switch 16 is turned on, the controller controls the electric telescopic rod 12 to retract. When air is supplied, the air pipe joint 23 is not connected with the main machine 1, and when the electric telescopic rod 12 retracts, the air cylinder 11 sucks air from the outside to supply air.
In order to further ensure the safety of the present invention, the air wave pressure therapy device comprises a safety valve 17, and the safety valve 17 is communicated with the inner space of the cylinder 11. The safety valve 17 is used for further supplementing the air pressure sensor 14 and the stroke detection structure 15, and can be opened when the air pressure sensor 14, the stroke detection structure 15 or other structures of the host 1 are damaged to cause the electric telescopic rod 12 not to timely stop stretching and retracting, so that the air pressure in the air cylinder 11 is too high or too low, the air cylinder 11 is communicated with the outside, and the protection effect is achieved.
Claims (7)
1. The air wave pressure therapeutic instrument comprises a host (1) and a limb sleeve (2), wherein the limb sleeve (2) comprises a plurality of air bags (21), and the host (1) can circularly inflate and deflate the air bags (21); the method is characterized in that: the limb sleeve (2) comprises an air valve (24), a lead (25), a lead joint (26), an air pipe (22) and an air pipe joint (23); the air valves (24) are arranged and connected with the air bags (21) in a one-to-one correspondence manner, the leads (25) are arranged and connected with the air valves (24) in a one-to-one correspondence manner, and the lead connectors (26) are connected with the leads (25); the air pipe (22) is connected with each air valve (24), and the air pipe joint (23) is connected with the air pipe (22); the main machine (1) comprises a cylinder (11), an electric telescopic rod (12) and a controller (13), wherein the electric telescopic rod (12) is connected with a piston (112) of the cylinder (11); the air pipe (22) is connected with the main machine (1) through an air pipe joint (23) and is communicated with a cylinder barrel (111) of the air cylinder (11); the lead (25) is connected with the host (1) through a lead joint (26) and is electrically connected with the controller (13); the controller (13) can control the air valves (24) to be opened in sequence and the electric telescopic rod (12) stretches when the air valves (24) are opened.
2. The airwave pressure treatment apparatus of claim 1, wherein: the number of the lead connectors (26) is one, each lead (25) is integrated into a lead assembly, and the lead connectors (26) are connected with the lead assemblies.
3. The airwave pressure treatment apparatus of claim 2, wherein: the lead joint (26) is connected with the air pipe joint (23).
4. The airwave pressure treatment apparatus of claim 3, wherein: the device comprises an air pressure sensor (14), wherein the air pressure sensor (14) is electrically connected with a controller (13) and can detect the air pressure in a cylinder barrel (111), and when the value measured by the air pressure sensor (14) reaches a set value, the controller (13) controls an electric telescopic rod (12) to stop extending.
5. The airwave pressure treatment apparatus of claim 4, wherein: the device comprises a stroke detection structure (15), wherein the stroke detection structure (15) is electrically connected with a controller (13) and can detect the elongation of an electric telescopic rod (12); the controller (13) controls the electric telescopic rod (12) according to the value measured by the stroke detection structure (15), so that the retraction stroke and the extension stroke of the electric telescopic rod (12) are the same in one-time extension and retraction.
6. The airwave pressure treatment apparatus of claim 5, wherein: the electric telescopic rod comprises an air supply switch (16), wherein the air supply switch (16) is electrically connected with a controller (13), and when the air supply switch (16) is turned on, the controller controls the electric telescopic rod (12) to retract.
7. The airwave pressure treatment apparatus of claim 6, wherein: comprises a safety valve (17), wherein the safety valve (17) is communicated with the inner space of the cylinder (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010297700.7A CN111419665A (en) | 2020-04-16 | 2020-04-16 | Air wave pressure therapeutic instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010297700.7A CN111419665A (en) | 2020-04-16 | 2020-04-16 | Air wave pressure therapeutic instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111419665A true CN111419665A (en) | 2020-07-17 |
Family
ID=71556464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010297700.7A Pending CN111419665A (en) | 2020-04-16 | 2020-04-16 | Air wave pressure therapeutic instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111419665A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113018677A (en) * | 2021-03-01 | 2021-06-25 | 四川大学华西医院 | Auxiliary device for plugging and unplugging quick connector |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737381A (en) * | 2004-08-19 | 2006-02-22 | Smc株式会社 | Method and apparatus for controlling air cylinder |
| CN203576877U (en) * | 2013-09-12 | 2014-05-07 | 天津市联大医用设备有限公司 | Single-air-pipe air wave pressure treatment instrument |
| US20150065931A1 (en) * | 2013-08-27 | 2015-03-05 | Baraa ALNABULSI | Pneumatic circulatory enhancer for diabetic leg therapy |
| WO2015037763A1 (en) * | 2013-09-16 | 2015-03-19 | (주)행복 | Air massage system and control terminal therefor |
| CN205268521U (en) * | 2015-12-21 | 2016-06-01 | 大连博旺科技发展有限公司 | Portable air wave therapeutic instrument |
| CN208804057U (en) * | 2018-09-19 | 2019-04-30 | 中车青岛四方车辆研究所有限公司 | Pantagraph current collector atmospheric control |
| CN209166351U (en) * | 2018-11-19 | 2019-07-26 | 维沃移动通信有限公司 | A kind of device for detecting distance of travel and terminal device |
| CN110721064A (en) * | 2019-11-27 | 2020-01-24 | 中国人民解放军陆军军医大学第一附属医院 | Neck waist shoulder joint motion rehabilitation treatment device |
| CN210131081U (en) * | 2019-03-15 | 2020-03-10 | 四川大学华西医院 | Lower limb rehabilitation device |
-
2020
- 2020-04-16 CN CN202010297700.7A patent/CN111419665A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737381A (en) * | 2004-08-19 | 2006-02-22 | Smc株式会社 | Method and apparatus for controlling air cylinder |
| US20150065931A1 (en) * | 2013-08-27 | 2015-03-05 | Baraa ALNABULSI | Pneumatic circulatory enhancer for diabetic leg therapy |
| CN203576877U (en) * | 2013-09-12 | 2014-05-07 | 天津市联大医用设备有限公司 | Single-air-pipe air wave pressure treatment instrument |
| WO2015037763A1 (en) * | 2013-09-16 | 2015-03-19 | (주)행복 | Air massage system and control terminal therefor |
| CN205268521U (en) * | 2015-12-21 | 2016-06-01 | 大连博旺科技发展有限公司 | Portable air wave therapeutic instrument |
| CN208804057U (en) * | 2018-09-19 | 2019-04-30 | 中车青岛四方车辆研究所有限公司 | Pantagraph current collector atmospheric control |
| CN209166351U (en) * | 2018-11-19 | 2019-07-26 | 维沃移动通信有限公司 | A kind of device for detecting distance of travel and terminal device |
| CN210131081U (en) * | 2019-03-15 | 2020-03-10 | 四川大学华西医院 | Lower limb rehabilitation device |
| CN110721064A (en) * | 2019-11-27 | 2020-01-24 | 中国人民解放军陆军军医大学第一附属医院 | Neck waist shoulder joint motion rehabilitation treatment device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113018677A (en) * | 2021-03-01 | 2021-06-25 | 四川大学华西医院 | Auxiliary device for plugging and unplugging quick connector |
| CN113018677B (en) * | 2021-03-01 | 2022-08-09 | 四川大学华西医院 | Auxiliary device for plugging and unplugging quick connector |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhong Shanqiong Inventor after: Zeng Yuanyuan Inventor after: Zheng Qiao Inventor after: Feng Xiaojuan Inventor before: Zhong Shanqiong Inventor before: Feng Xiaojuan Inventor before: Zeng Yuanyuan |
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