CN113750318A - Automatic pressurizing device for transfusion - Google Patents
Automatic pressurizing device for transfusion Download PDFInfo
- Publication number
- CN113750318A CN113750318A CN202110925589.6A CN202110925589A CN113750318A CN 113750318 A CN113750318 A CN 113750318A CN 202110925589 A CN202110925589 A CN 202110925589A CN 113750318 A CN113750318 A CN 113750318A
- Authority
- CN
- China
- Prior art keywords
- box body
- air curtain
- infusion
- pressurizing device
- pressing
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags
- A61M5/1483—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags using flexible bags externally pressurised by fluid pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/44—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media
- A61M5/445—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media the media being heated in the reservoir, e.g. warming bloodbags
Abstract
An automatic pressurizing device for transfusion, which relates to the technical field of medical auxiliary appliances, comprises a box body, an air curtain and a miniature air pump; the top of the box body is open, a partition plate for dividing the space in the box body into an upper cavity and a lower cavity is arranged in the box body close to the upper end, an air curtain capable of expanding towards the inner bottom of the box body is arranged in the lower cavity of the box body, one side edge of the air curtain is correspondingly and fixedly connected with the inner wall of one side of the lower cavity of the box body, and a pressing device for pressing the corresponding side edge of the air curtain is arranged on the other side of the lower cavity of the box body; a miniature air pump for inflating and deflating the air curtain is arranged in the upper cavity of the box body, an air hole is formed in the side wall of the box body, which corresponds to the miniature air pump, and a notch for exposing the mouth of the infusion bag is formed in the middle of one end of the box body, which is far away from the miniature air pump; the invention can control the pressure applied by the air curtain to the infusion bag through the miniature air pump, thereby realizing the control of the infusion flow rate and effectively ensuring the stability of the infusion flow rate.
Description
Technical Field
The invention relates to the technical field of medical auxiliary appliances, in particular to an automatic pressurizing device for infusion.
Background
When venous transfusion is carried out in clinical work, an infusion support or a rail hook is needed, when quick infusion and blood transfusion are needed in an emergency, or a patient needing to be infused needs to move to carry out special examinations such as CT (computed tomography), or when a child needing to go to a toilet or for infusion is crying and screaming and is not sitting on a seat, a person is usually required to manually squeeze an infusion bag or lift the infusion bag by hand to carry out auxiliary infusion, which is inconvenient; if the auxiliary staff does not take the infusion tube in an opposite way, such as horizontal or inverted holding, air or blood may enter the infusion tube, which may cause air embolism or needle blood coagulation to block the infusion tube, and the manual squeezing infusion speed is unstable, which may cause discomfort to the patient.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses an automatic pressurizing device for transfusion.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic pressurizing device for transfusion comprises a box body, an air curtain and a miniature air pump; the top of the box body is open, a partition plate for dividing the space in the box body into an upper cavity and a lower cavity is arranged in the box body close to the upper end, an air curtain capable of expanding towards the inner bottom of the box body is arranged in the lower cavity of the box body, one side edge of the air curtain is correspondingly and fixedly connected with the inner wall of one side of the lower cavity of the box body, and a pressing device for pressing the corresponding side edge of the air curtain is arranged on the other side of the lower cavity of the box body; the internal miniature air pump that is used for filling the gassing for the air curtain that is equipped with of box body epicoele, and the box body corresponds one side lateral wall of miniature air pump and is equipped with the gas pocket, and the one end intermediate position that the box body deviates from miniature air pump is equipped with the opening that is used for making the infusion bag sack expose.
Preferably, canvas is arranged on one surface of the air curtain, which deviates from the bottom in the box body.
Preferably, a wire mesh is arranged between the air curtain and the canvas.
Preferably, the pressing device comprises a supporting seat and a pressing rod, the bottom of the supporting seat is correspondingly and tightly connected with the box body, one end of the pressing rod is correspondingly hinged to one end of the top of the supporting seat, and a corresponding matched pressing type self-locking lock catch is arranged between the other end of the pressing rod and the corresponding end of the supporting seat.
Preferably, the supporting seat top is equipped with the fluting along supporting seat length direction axis, compress tightly the pole bottom and be equipped with the sand grip that can correspond the block with the fluting.
Preferably, a rubber pad is arranged at the top of one end of the pressing rod corresponding to the pressing type self-locking lock catch.
Preferably, the notch is of a V-shaped structure, and a rubber plate in a split structure is arranged at the position of the box body corresponding to the notch.
Preferably, a heating plate is arranged at the bottom in the lower cavity of the box body.
Preferably, the top of the box body is provided with a cover body capable of being opened and closed laterally, and a touch screen is arranged in the box body corresponding to the position of the miniature air pump.
Preferably, an opening is formed in the position, corresponding to the touch screen, of the cover body.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the automatic pressurizing device for transfusion disclosed by the invention is simple in structure and convenient to use, can realize gravity-free transfusion, controls the pressure applied to a transfusion bag by the air curtain through the miniature air pump, further realizes the control of the transfusion flow rate, and can effectively ensure the stability of the transfusion flow rate; the pressing device comprises a supporting seat and a pressing rod, the edge of the free side of the air curtain can be arranged at the top of the supporting seat after the air curtain coats the infusion bag, the edge of the free side of the air curtain can be pressed by pressing the pressing rod downwards, the free end of the pressing rod can be locked by the pressing type self-locking lock catch, and meanwhile, the tightness of the air curtain can be adjusted by the pressing device, so that the air curtain can tightly coat the infusion bag;
in addition, canvas is arranged on one surface of the air curtain, which is far away from the bottom in the box body, and a metal wire mesh is arranged between the air curtain and the canvas, so that the air curtain can be prevented from expanding towards one side, which is far away from the infusion bag, and the expansion efficiency of the air curtain is reduced; the heating plate is arranged at the bottom in the lower cavity of the box body, so that the liquid medicine in the infusion bag can be heated through the heating plate in a cold environment, and the cold liquid medicine is prevented from bringing discomfort to a patient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the pressing device;
FIG. 3 is a schematic view of the structure of the air hole;
fig. 4 is a schematic cross-sectional structure of the air curtain.
In the figure: 1. a box body; 2. an air curtain; 3. a micro air pump; 4. a partition panel; 5. a pressing device; 5-1, a supporting seat; 5-2, a compression rod; 5-3, pressing type self-locking lock catches; 5-4, slotting; 5-5, convex strips; 5-6, rubber pad; 6. air holes; 7. opening the gap; 8. a rubber plate; 9. canvas; 10. a wire mesh; 11. a cover body; 12. a touch screen; 13. heating the plate.
Detailed Description
The present invention will be explained in detail by the following embodiments, and the purpose of disclosing the invention is to protect all technical improvements within the scope of the present invention, in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present application, and it is convenient to describe the present invention, and it is not intended to indicate or imply that the referred device or element must have a specific orientation.
With reference to the attached figures 1-4, an automatic pressurizing device for transfusion comprises a box body 1, an air curtain 2 and a micro air pump 3; the infusion bag lifting device is characterized in that the top of the box body 1 is open, a partition plate 4 used for dividing the space in the box body 1 into an upper cavity and a lower cavity is arranged in the position, close to the upper end, in the box body 1, an air curtain 2 capable of expanding towards the inner bottom of the box body is arranged in the lower cavity of the box body 1, one side edge of the air curtain 2 is correspondingly and fixedly connected with the inner wall of one side of the lower cavity of the box body 1, a pressing device 5 used for pressing the corresponding side edge of the air curtain 2 is arranged on the other side of the lower cavity of the box body 1, namely, the infusion bag can be placed in the lower cavity of the box body 1 when in use, the air curtain 2 tightly coats the infusion bag, the free side edge of the air curtain 2 is pressed through the pressing device 5, and the air curtain 2 gradually expands to extrude the infusion bag, so that the purpose of improving the infusion speed or gravity-free infusion is achieved, the structure is simple and convenient to use; according to the requirement, the pressing device 5 comprises a supporting seat 5-1 and a pressing rod 5-2, the bottom of the supporting seat 5-1 is correspondingly and tightly connected with the box body 1, one end of the pressing rod 5-2 is correspondingly hinged with one end of the top of the supporting seat 5-1, a correspondingly matched press type self-locking lock catch 5-3 is arranged between the other end of the pressing rod 5-2 and the corresponding end of the supporting seat 5-1, namely, the edge of the free side of the air curtain 2 can be arranged at the top of the supporting seat 5-1 after the air curtain 2 coats the infusion bag, the edge of the free side of the air curtain 2 can be pressed by pressing the pressing rod 5-2 downwards, the free end of the pressing rod 5-2 can be locked by the pressing self-locking lock catch 5-3, meanwhile, the tightness of the air curtain 2 can be adjusted through the pressing device 5, so that the air curtain 2 can tightly coat the infusion bag;
the miniature air pump 3 used for inflating and deflating the air curtain 2 is arranged in the upper cavity of the box body 1, the air hole 6 is formed in the side wall of the box body 1, corresponding to the miniature air pump 3, of one side, namely the air curtain 2 can be inflated through the miniature air pump 3 during infusion, the inflation speed can be controlled, the inflation speed of the air curtain 2 is controlled, the pressure applied to the infusion bag by the air curtain 2 is controlled, the purpose of controlling the infusion flow rate is further achieved, and after the infusion is finished, air in the air curtain 2 can be sucked through the miniature air pump 3, so that the air curtain 2 is rapidly deflated, and the next use is facilitated; a notch 7 for exposing the mouth of the infusion bag is arranged in the middle of one end of the box body 1, which is far away from the micro air pump 3, so that the mouth of the infusion bag can extend out of the notch 7, and the infusion tube can be conveniently connected; according to the requirement, the notch 7 is of a V-shaped structure, the rubber plate 8 of a split structure is arranged at the position, corresponding to the notch 7, of the box body 1, the rubber plate 8 has better toughness, so that the infusion bag can be conveniently taken and placed, and meanwhile, the infusion bag can be prevented from being accidentally separated from the position of the notch 7;
in addition, the top of the supporting seat 5-1 is provided with a slot 5-4 along the axial line of the supporting seat 5-1 in the length direction, the bottom of the pressing rod 5-2 is provided with a convex strip 5-5 which can be correspondingly clamped with the slot 5-4, the firmness of the free side of the pressed air curtain 2 can be further ensured through the matching of the convex strip 5-5 and the slot 5-4, and the air curtain 2 is prevented from accidentally separating from the pressing device 5 after being inflated and expanded; the top of one end of the pressing rod 5-2, corresponding to the pressing type self-locking lock catch 5-3, is provided with a rubber pad 5-6, so that the pressing hand feeling of an operator can be effectively improved, and the comfort level of pressing operation is improved; canvas 9 is arranged on one surface of the air curtain 2, which is far away from the inner bottom of the box body 1, and a metal wire mesh 10 is arranged between the air curtain 2 and the canvas, so that the air curtain 2 can be prevented from expanding towards one side, which is far away from the infusion bag, and the expansion efficiency of the air curtain 2 is reduced; the heating plate 13 is arranged at the bottom in the lower cavity of the box body 1, namely, the liquid medicine in the infusion bag can be heated through the heating plate 13 in a cold environment, so that the cold liquid medicine is prevented from bringing discomfort to a patient; the top of the box body 1 is provided with a cover body 11 capable of being opened and closed laterally, a touch screen 12 is arranged in the box body 1 corresponding to the micro air pump 3, an opening is formed in the position, corresponding to the touch screen 12, of the cover body 11, the cover body 11 can be closed to seal the open box body 1, accidental puncture of the air curtain 2 by a sharp object is avoided, the inflation speed of the micro air pump 3 can be controlled through the touch screen 12, the pressure applied to the infusion bag by the air curtain 2 is controlled, and the purpose of controlling the infusion flow rate is achieved.
When the automatic pressurizing device for infusion is implemented, an infusion bag is placed in the lower cavity of the box body 1 during use, the bag opening of the infusion bag extends out of the notch 7, the infusion tube is connected to the bag opening of the infusion bag, the air curtain 2 tightly coats the infusion bag, the edge of the free side of the air curtain 2 can be placed at the top of the supporting seat 5-1 after the air curtain 2 coats the infusion bag, the edge of the free side of the air curtain 2 can be pressed through pressing the pressing rod 5-2 downwards, the free end of the pressing type self-locking lock catch 5-3 locks the free end of the pressing rod 5-2, and meanwhile, the tightness of the air curtain 2 can be adjusted through the pressing device 5, so that the air curtain 2 can tightly coat the infusion bag; can aerify for air curtain 2 through miniature air pump 3 when the infusion to can control inflation speed, control air curtain 2's inflation speed, control air curtain 2 exerts pressure's size to infusion bag, and then realize the purpose of control infusion velocity of flow, the infusion finishes can be through miniature air pump 3 suction air curtain 2 interior gas, makes air curtain 2 dry and flat rapidly, is convenient for use next time.
The invention is not described in detail in the prior art, and it is apparent to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (10)
1. An automatic pressurizing device for transfusion is characterized in that: comprises a box body (1), an air curtain (2) and a micro air pump (3); the top of the box body (1) is open, a partition plate (4) used for dividing the space in the box body (1) into an upper cavity and a lower cavity is arranged at a position close to the upper end in the box body (1), an air curtain (2) capable of expanding towards the inner bottom of the box body is arranged in the lower cavity of the box body (1), one side edge of the air curtain (2) is correspondingly and fixedly connected with the inner wall of one side of the lower cavity of the box body (1), and a pressing device (5) used for pressing the corresponding side edge of the air curtain (2) is arranged at the other side of the lower cavity of the box body (1); the internal miniature air pump (3) that are used for filling the gassing for air curtain (2) that is equipped with of box body (1) epicoele, and box body (1) correspond one side lateral wall of miniature air pump (3) and are equipped with gas pocket (6), and box body (1) deviates from one end intermediate position of miniature air pump (3) and is equipped with opening (7) that are used for making the infusion bag sack expose.
2. The automatic pressurizing device for infusion as set forth in claim 1, wherein: the side of the air curtain (2) departing from the bottom in the box body (1) is provided with canvas (9).
3. The automatic pressurizing device for infusion as set forth in claim 1, wherein: a metal wire mesh (10) is arranged between the air curtain (2) and the canvas.
4. The automatic pressurizing device for infusion as set forth in claim 1, wherein: the pressing device (5) comprises a supporting seat (5-1) and a pressing rod (5-2), the bottom of the supporting seat (5-1) is correspondingly and fixedly connected with the box body (1), one end of the pressing rod (5-2) is correspondingly hinged with one end of the top of the supporting seat (5-1), and a correspondingly matched pressing type self-locking lock catch (5-3) is arranged between the other end of the pressing rod (5-2) and the corresponding end of the supporting seat (5-1).
5. The automatic pressurizing device for infusion as set forth in claim 4, wherein: the top of the supporting seat (5-1) is provided with a groove (5-4) along the axial line of the supporting seat (5-1) in the length direction, and the bottom of the pressing rod (5-2) is provided with a convex strip (5-5) which can be correspondingly clamped with the groove (5-4).
6. The automatic pressurizing device for infusion as set forth in claim 4, wherein: the top of one end of the pressing rod (5-2) corresponding to the pressing type self-locking lock catch (5-3) is provided with a rubber pad (5-6).
7. The automatic pressurizing device for infusion as set forth in claim 1, wherein: the opening (7) is of a V-shaped structure, and a rubber plate (8) which is of a split structure is arranged at the position, corresponding to the opening (7), of the box body (1).
8. The automatic pressurizing device for infusion as set forth in claim 1, wherein: and a heating plate (13) is arranged at the bottom in the lower cavity of the box body (1).
9. The automatic pressurizing device for infusion as set forth in claim 1, wherein: the top of the box body (1) is provided with a cover body (11) which can be opened and closed laterally, and a touch screen (12) is arranged in the box body (1) corresponding to the position of the micro air pump (3).
10. The automatic pressurizing device for infusion as set forth in claim 8, wherein: an opening is formed in the position, corresponding to the touch screen (12), of the cover body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110925589.6A CN113750318A (en) | 2021-08-12 | 2021-08-12 | Automatic pressurizing device for transfusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110925589.6A CN113750318A (en) | 2021-08-12 | 2021-08-12 | Automatic pressurizing device for transfusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113750318A true CN113750318A (en) | 2021-12-07 |
Family
ID=78789139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110925589.6A Withdrawn CN113750318A (en) | 2021-08-12 | 2021-08-12 | Automatic pressurizing device for transfusion |
Country Status (1)
| Country | Link |
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| CN (1) | CN113750318A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2605009Y (en) * | 2003-03-28 | 2004-03-03 | 王燕 | Soft-packing liquid-rapid pressure transfusion device |
| CN101007556A (en) * | 2006-01-25 | 2007-08-01 | 高田株式会社 | Airbag system and motorcycle with airbag system |
| CN205569430U (en) * | 2016-01-06 | 2016-09-14 | 戚旻 | Novel vein blood transfusion infusion pressurization device |
| CN111643772A (en) * | 2020-05-27 | 2020-09-11 | 青岛市妇女儿童医院（青岛市妇幼保健院、青岛市残疾儿童医疗康复中心、青岛市新生儿疾病筛查中心） | Automatic pressurizing air bag for transfusion |
| CN212234957U (en) * | 2020-03-19 | 2020-12-29 | 华中科技大学同济医学院附属协和医院 | Infusion is applied ointment or plaster |
| CN213191760U (en) * | 2020-05-09 | 2021-05-14 | 杨杨 | Blood transfusion pressure device for blood transfusion department |
| CN213432276U (en) * | 2020-06-23 | 2021-06-15 | 江苏省人民医院（南京医科大学第一附属医院） | Blood transfusion flow rate control pressurizer |
| CN213589340U (en) * | 2020-01-10 | 2021-07-02 | 何海霞 | Electric pressurizing infusion device |
-
2021
- 2021-08-12 CN CN202110925589.6A patent/CN113750318A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2605009Y (en) * | 2003-03-28 | 2004-03-03 | 王燕 | Soft-packing liquid-rapid pressure transfusion device |
| CN101007556A (en) * | 2006-01-25 | 2007-08-01 | 高田株式会社 | Airbag system and motorcycle with airbag system |
| CN205569430U (en) * | 2016-01-06 | 2016-09-14 | 戚旻 | Novel vein blood transfusion infusion pressurization device |
| CN213589340U (en) * | 2020-01-10 | 2021-07-02 | 何海霞 | Electric pressurizing infusion device |
| CN212234957U (en) * | 2020-03-19 | 2020-12-29 | 华中科技大学同济医学院附属协和医院 | Infusion is applied ointment or plaster |
| CN213191760U (en) * | 2020-05-09 | 2021-05-14 | 杨杨 | Blood transfusion pressure device for blood transfusion department |
| CN111643772A (en) * | 2020-05-27 | 2020-09-11 | 青岛市妇女儿童医院（青岛市妇幼保健院、青岛市残疾儿童医疗康复中心、青岛市新生儿疾病筛查中心） | Automatic pressurizing air bag for transfusion |
| CN213432276U (en) * | 2020-06-23 | 2021-06-15 | 江苏省人民医院（南京医科大学第一附属医院） | Blood transfusion flow rate control pressurizer |
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| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211207 |
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| WW01 | Invention patent application withdrawn after publication |