CN211563920U - Cleaning swab and cleaning system - Google Patents
Cleaning swab and cleaning system Download PDFInfo
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- CN211563920U CN211563920U CN201921531007.0U CN201921531007U CN211563920U CN 211563920 U CN211563920 U CN 211563920U CN 201921531007 U CN201921531007 U CN 201921531007U CN 211563920 U CN211563920 U CN 211563920U
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Abstract
The utility model relates to a hematology analyzer field discloses a wash swab, including shell and inner core, the shell is provided with accommodation space, inlet and liquid outlet, and inlet and liquid outlet all communicate with accommodation space. The inner core includes first main part and second main part, and first main part is provided with first cavity and feed liquor hole, and the outer wall of first main part encloses with the inner wall of shell and closes the feed liquor chamber that forms around first cavity, and feed liquor hole intercommunication first cavity and feed liquor chamber, the feed liquor hole is the acute angle with the axial axis of first cavity and the angle of radial axis, and the feed liquor chamber still communicates with the inlet. The second main part is provided with a second cavity and a liquid outlet hole, the outer wall of the second main part and the inner wall of the shell jointly form a liquid outlet cavity surrounding the second cavity, the liquid outlet hole is communicated with the second cavity and the liquid outlet cavity, the liquid outlet cavity is further communicated with the liquid outlet, and the second cavity is communicated with the first cavity. Through the mode, the cleaning liquid can wash away the sampling needle along the excircle tangential direction and the axial direction of the sampling needle, and the cleaning effect is improved.
Description
Technical Field
The utility model belongs to the technical field of hematology analysis equipment and specifically relates to a wash swab and cleaning system is related to.
Background
After the sampling needle draws a blood sample from the test tube during use of the hematology analyzer, there may be residual blood sample on the inner and outer surfaces of the sampling needle and in the sample distribution channel. If these blood samples can not in time be washd, not only can influence this blood cell analysis result, moreover, when gathering next sample, the blood sample can receive the carry pollution, can influence blood sample detection analysis result to lead to instrument repeatability and measurement accuracy subalternation problem.
The utility model discloses the inventor is realizing the utility model discloses an in-process discovery: at present, a sampling needle is used for cleaning a swab, a cleaning liquid circulation channel is simple in structure, liquid is fed in a direction perpendicular to the axial direction of the sampling needle, a cleaning dead angle exists, and therefore the surface of the sampling needle cannot be thoroughly washed.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a main technical problem who solves provides a wash swab, can not have the dead angle and wash the sampling needle.
The utility model provides a its technical problem adopt following technical scheme:
a cleaning swab, comprising:
the liquid inlet is used for being communicated with the positive-pressure liquid storage tank, and the liquid outlet is used for being communicated with the negative-pressure waste liquid tank;
the inner core comprises a first main body and a second main body, the first main body is provided with a first cavity and a liquid inlet hole, the first main body is accommodated in the accommodating space, the outer wall of the first main body and the inner wall of the shell enclose to form a liquid inlet cavity surrounding the first cavity, the liquid inlet hole is communicated with the first cavity and the liquid inlet cavity, the angles of the axial axis and the radial axis of the liquid inlet hole and the first cavity are acute angles, and the liquid inlet cavity is also communicated with the liquid inlet;
the second body is provided with a second cavity and a liquid outlet hole, the second body is contained in the containing space, the outer wall of the second body and the inner wall of the shell jointly form a liquid outlet cavity surrounding the second cavity, the liquid outlet hole is communicated with the second cavity and the liquid outlet cavity, the liquid outlet cavity is communicated with the liquid outlet, and the second cavity is communicated with the first cavity.
The further improvement of the technical proposal also comprises a liquid inlet joint and a liquid outlet joint; one end of the liquid inlet connector is connected with the liquid inlet, the other end of the liquid inlet connector is used for being communicated with the positive pressure liquid storage tank, one end of the liquid outlet connector is connected with the liquid outlet, and the other end of the liquid outlet connector is used for being communicated with the negative pressure waste liquid tank.
For the further improvement of the technical scheme, the axis of the liquid inlet joint is tangent to the liquid inlet cavity.
To the further improvement of above-mentioned technical scheme, the feed liquor direction in feed liquor hole with the feed liquor direction of feed liquor joint forms the contained angle for the obtuse angle.
For further improvement of the technical scheme, the first cavity comprises a first cavity and a second cavity, the second cavity comprises a third cavity and a fourth cavity, the first cavity, the second cavity, the third cavity and the fourth cavity are coaxially communicated, the diameter of the second cavity is the largest, and the diameters of the first cavity, the third cavity and the fourth cavity are sequentially reduced.
For the further improvement of the technical scheme, the liquid inlet hole is communicated with the bottom of the second chamber.
For the further improvement of the technical scheme, the number of the liquid inlet holes is multiple.
To the further improvement of above-mentioned technical scheme, a plurality of feed liquor holes distribute around the liquid inlet cavity hoop equidistance.
For further improvement of the technical scheme, a chamfer transition is arranged at the joint of the second chamber and the third chamber, and a chamfer transition is arranged at the joint of the third chamber and the fourth chamber.
The utility model provides a its technical problem still adopts following technical scheme:
a cleaning system comprises the cleaning swab, a positive pressure liquid storage tank and a negative pressure waste liquid tank; the positive pressure liquid storage tank is connected with the liquid inlet, and the negative pressure liquid storage tank is connected with the liquid outlet.
The embodiment of the utility model provides a beneficial effect is: be different from prior art's condition, the embodiment of the utility model provides a sampling needle washs swab, including shell and inner core, wherein, the shell is provided with accommodation space, inlet and liquid outlet, and inlet and liquid outlet all communicate with accommodation space to the liquid outlet is located the top of inlet, and the inlet is used for communicating with the malleation liquid storage pot, and the liquid outlet is used for communicating with negative pressure waste liquid tank. The inner core, including first main part and second main part, first main part is provided with first cavity and feed liquor hole, first main part accept in accommodation space to the outer wall of first main part encloses with the inner wall of shell and closes the feed liquor chamber that forms around first cavity, first cavity of feed liquor hole intercommunication and feed liquor chamber, the feed liquor hole is the acute angle with the axial axis of first cavity and the angle of radial axis, the feed liquor chamber still communicates with the inlet. The second body is provided with a second cavity and a liquid outlet hole, the second body is contained in the containing space, the outer wall of the second body and the inner wall of the shell jointly form a liquid outlet cavity surrounding the second cavity, the liquid outlet hole is communicated with the second cavity and the liquid outlet cavity, the liquid outlet cavity is further communicated with the liquid outlet, and the second cavity is communicated with the first cavity.
When the sampling needle is cleaned, the sampling needle is positioned in the second cavity and moves towards the first cavity, the cleaning liquid is injected into the liquid inlet cavity from the liquid inlet by positive pressure of the liquid tank, and the cleaning liquid flows into the first cavity through the liquid inlet hole. The negative pressure waste liquid tank generates negative pressure at the liquid outlet to generate attraction force on the cleaning liquid, and the cleaning liquid flows to the liquid outlet cavity and is discharged from the liquid outlet. In the process, because the angles of the liquid inlet hole and the axial axis and the radial axis of the first cavity are acute angles, the cleaning liquid flowing out of the liquid inlet hole has axial speed and speed tangent to the radial direction relative to the first cavity, can rotate and rise in the second cavity, and spirally flows to the liquid outlet cavity. In this in-process, the washing liquid has multiple angle of erodeing on the sampling needle surface, especially can follow sampling needle excircle tangential direction and erode the sampling needle, avoids the direct perpendicular injection of washing liquid to the sampling needle outer wall, causes the inhomogeneous problem of sampling needle outer wall feed liquor to can realize that no dead angle is clean.
Drawings
FIG. 1 is a schematic view of a cleaning swab according to one embodiment of the present invention;
FIG. 2 is a cross-sectional view of the cleaning swab of FIG. 1;
FIG. 3 is a schematic view of the first body of the cleaning swab of FIG. 1;
FIG. 4 is a cross-sectional view of the first body of the cleaning swab of FIG. 1;
fig. 5 is a schematic flow diagram of a cleaning liquid according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the cleaning swab includes a shell 10 and a core 20, wherein the core 20 is accommodated in the shell 10. The inner core 20 is provided with a cavity for receiving a sampling needle (not shown) and providing a passage for the cleaning fluid. The shell 10 is used as a support of the inner core 20, meanwhile, the shell 10 is communicated with the cavity of the inner core 20, cleaning liquid flows into the cavity through one end of the shell 10 and then flows out from the other end of the shell 10, and the sampling needle is cleaned when the cleaning liquid flows in the cavity.
For the above-mentioned housing 10, as shown in fig. 1, the housing 10 is provided with an accommodating space, a liquid inlet 11, a liquid outlet 12, a liquid inlet joint 14 and a liquid outlet joint 15, the accommodating space is used for accommodating the inner core 20, the liquid inlet 11 and the liquid outlet 12 are both communicated with the accommodating space, and the liquid outlet 12 is located above the liquid inlet 11. One end of the liquid inlet joint 14 is connected to the liquid inlet 11, and the other end is used for being communicated with a positive pressure liquid storage tank (not shown), and the positive pressure liquid storage tank is used for allowing cleaning liquid to enter the cavity of the inner core 20. One end of the liquid outlet joint 15 is connected to the liquid outlet 12, and the other end is used for communicating with a negative pressure waste liquid tank (not shown) for generating suction force for flowing the cleaning liquid and containing the waste liquid. The positive pressure liquid storage tank injects the cleaning liquid from the liquid inlet joint 14, the cleaning liquid flows into the inner core 20 in the accommodating space from the liquid inlet 11, and the negative pressure waste liquid tank generates negative pressure attraction force, so that the cleaning liquid flows to the liquid outlet 12 to clean the sampling needle. The cleaned waste liquid flows out from the liquid outlet 12 and is discharged to a negative pressure waste liquid tank through the liquid outlet joint 15. It will be understood that the relative positions of inlet 11 and outlet 12 are not limited, but are satisfied by: the distance between the liquid inlet 11 and the liquid outlet 12 along the axial direction of the cavity is greater than the length of the sampling needle, so that the cleaning liquid can clean the whole sampling needle. It will be appreciated that in some embodiments, inlet 11 may be in direct communication with a positive pressure reservoir and outlet 12 may be in direct communication with a negative pressure waste reservoir.
As for the inner core 20, as shown in fig. 2, the inner core comprises a first main body 21 and a second main body 22, the first main body 21 and the second main body 22 are communicated with each other and are both accommodated in the accommodating space, the first main body 21 and the second main body 22 are communicated with each other, and the sampling needle moves in the communicated space. Further, the first body 21 communicates with the liquid inlet 11, and the second body 22 communicates with the liquid outlet 12.
The first body 21 is provided with a first cavity 211 and a liquid inlet hole 212, and the first cavity 211 includes a first chamber 2111 and a second chamber 2112. The outer wall of the first body 21 and the inner wall of the housing 10 enclose an inlet chamber 213 surrounding said first chamber 2111. The inlet hole 212 communicates the first chamber 2111 with the inlet chamber 213, and the inlet chamber 213 is also in communication with the inlet port 11.
The second body 22 is provided with a second cavity 221 and an outlet hole 222, and the second cavity 221 includes a third cavity 2211 and a fourth cavity 2212. The outer wall of the second body 22 and the inner wall of the housing 10 together form a liquid outlet cavity 223 surrounding the third cavity 2211, the liquid outlet hole 222 communicates with the third cavity 2211 and the liquid outlet cavity 223, and the liquid outlet cavity 223 further communicates with the liquid outlet 12.
Wherein, fourth chamber 2212 is used for playing the guide effect to the motion of sampling needle, and the diameter ratio of fourth chamber 2212 is slightly bigger than the external diameter of sampling needle, can not have too much air admission, has avoided negative pressure waste liquid jar to the waste liquid adsorption affinity in first chamber 2111, second chamber 2112 and the third chamber 2211 not enough. The diameter of third compartment 2211 is slightly larger than the diameter of fourth compartment 2212 to ensure that all cleaning solution passes through smoothly. The diameter of the second chamber 2112 is the largest, and the cleaning solution can be collected in the second chamber 221, so that sufficient cleaning solution entering the third chamber 2211 is ensured, no flow break occurs, and the cleaning effect can be improved. Preferably, a chamfer transition is arranged at the joint of the second chamber 2112 and the third chamber 2211, and a chamfer transition is arranged at the joint of the third chamber 2211 and the fourth chamber 2212, so that the circulation of the cleaning solution is further facilitated.
It will be appreciated that in some embodiments, the first and second chambers 211, 221 may be segmented in other ways, such as the second chamber 221 having only one chamber, or such as the first chamber 211 being divided into a first chamber 2111 and a second chamber 2112, the second chamber 2112 being smaller in diameter than the first chamber 2111 to provide cushioning. However, these sectional methods should have a common feature that the first cavity 211 is concentric and coaxial with the second cavity 221, and the diameters of the first cavity 211 and the second cavity 221 are larger than the diameter of the sampling needle.
As shown in fig. 3 and 4, the angles between the liquid inlet hole 212 and the axial axis and the radial axis of the first cavity 211 are acute angles, and the liquid inlet hole 212 communicates with the bottom of the second cavity 2112. When the cleaning liquid flows out from the liquid inlet hole 212 and enters the bottom of the second chamber 2112, the cleaning liquid has an axial speed and a speed tangential to the radial direction relative to the first chamber 211, can rotate and rise in the second chamber 221, and spirally flows to the liquid outlet chamber 223. In this in-process, the washing liquid has multiple angle of erodeing on the sampling needle surface, especially can follow sampling needle excircle tangential direction and erode the sampling needle, avoids the direct perpendicular injection of washing liquid to the sampling needle outer wall, causes the inhomogeneous problem of sampling needle outer wall feed liquor to can realize that no dead angle is clean. In addition, the cleaning fluid is attracted axially toward the outlet chamber 223. Under the combined action of the axial attraction force and the radial shearing force, the cleaning liquid can flow in a rotating mode, and the whole sampling needle section is further subjected to shearing washing.
In this embodiment, the number of the liquid inlet holes 212 is 4, the liquid inlet holes are circumferentially and uniformly distributed around the second chamber 2112, the rotating directions of the 4 liquid inlet holes 212 are consistent, a rotating fluid is formed, and the sampling needle is cleaned without dead angles. It is understood that in other embodiments, the number of the liquid inlet holes 212 may be determined according to the actual situation of the first cavity 211, so as to satisfy the cleaning of sampling needles with different specifications, and only the rotation directions of the liquid inlet holes 212 need to be consistent.
The liquid inlet cavity 213 is used for storing cleaning liquid, the cleaning liquid forms a spring in the liquid inlet cavity 213 and then enters the first cavity 211, the cleaning liquid is sufficient, and the cleaning is prevented from being influenced by insufficient supply of the cleaning liquid. The waste liquid after the washing collects in going out the liquid chamber 223, then discharges to the negative pressure waste liquid jar in, goes out liquid chamber 223 and provides bigger discharge space for the waste liquid, can effectively prevent that the waste liquid is discharged untimely, and the refluence pollutes the sampling needle. In this embodiment, the liquid inlet chamber 213 is a circular cylinder axially coaxial with the inner core 20, and it is understood that in some embodiments, the liquid inlet chamber 213 may also be a hollow cuboid or a hollow circular truncated cone surrounding the first chamber 211.
Preferably, in some embodiments, as shown in FIG. 5, the axis of the inlet fitting 14 is tangential to the inlet chamber 213. The cleaning liquid enters the liquid inlet cavity 213 along the circular tangent of the liquid inlet cavity 213 to form a liquid flow rotating around the axis of the liquid inlet cavity 213, and the rotating liquid flow enters the second chamber 2112 through the liquid inlet hole 212, and the rotating liquid flow has a scouring force. The included angle formed by the liquid inlet direction of the liquid inlet hole 212 and the liquid inlet direction of the liquid inlet joint 14 is an obtuse angle, the liquid inlet joint 14 and the liquid inlet hole 212 are arranged in a spiral ring shape and ascend upwards, so that the rotating direction of cleaning liquid entering the second chamber 2112 from the liquid inlet hole 212 is consistent with the rotating direction of cleaning liquid entering the liquid inlet cavity 213 from the liquid inlet joint, and the rotating effect of the cleaning liquid is improved.
The utility model provides a cleaning swab's theory of operation as follows: the cleaning liquid enters the liquid inlet cavity 213 from the liquid inlet 11 to form a fountain under the positive pressure action of the positive pressure liquid storage tank, and flows into the second cavity 2112 through the liquid inlet hole 212. Since the angle of the liquid inlet hole 212 to the axial axis and the radial axis of the first chamber 211 is acute, the cleaning liquid flowing out of the liquid inlet hole 212 has an axial velocity and a velocity tangential to the radial direction with respect to the second chamber 2112. The negative pressure waste liquid tank enables the second cavity 2112 and the third cavity 2211 of the cleaning swab to form negative pressure through the liquid outlet 12, attractive force is generated on the cleaning liquid, the cleaning liquid rotates and rises, flows to the third cavity 2211, washes the surface of the sampling needle, then enters the liquid outlet cavity 223, flows to the liquid outlet 12, and is recovered to the negative pressure waste liquid tank. The washing liquid has multiple angle of erodeing on the sampling needle surface, especially can follow sampling needle excircle tangential direction and erode the sampling needle, avoids the washing liquid directly to be sprayed the sampling needle outer wall perpendicularly, causes the inhomogeneous problem of sampling needle outer wall feed liquor, can realize that no dead angle is clean.
The utility model also provides a cleaning system, this cleaning system include malleation liquid storage pot, negative pressure waste liquid jar and foretell washing swab, and this cleaning system can carry out no dead angle cleanness to the sampling needle, has avoided carry pollution, has improved measurement accuracy.
It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A cleaning swab, comprising:
the device comprises a shell (10) and a liquid outlet (12), wherein the shell is provided with an accommodating space, a liquid inlet (11) and a liquid outlet (12), the liquid inlet (11) and the liquid outlet (12) are communicated with the accommodating space, the liquid outlet (12) is positioned above the liquid inlet (11), the liquid inlet (11) is used for being communicated with a positive-pressure liquid storage tank, and the liquid outlet (12) is used for being communicated with a negative-pressure waste liquid tank;
the inner core (20) comprises a first main body (21) and a second main body (22), the first main body (21) is provided with a first cavity (211) and a liquid inlet hole (212), the first main body (21) is accommodated in the accommodating space, the outer wall of the first main body (21) and the inner wall of the shell (10) enclose a liquid inlet cavity (213) surrounding the first cavity (211), the liquid inlet hole (212) is communicated with the first cavity (211) and the liquid inlet cavity (213), the angles of the axial axis and the radial axis of the liquid inlet hole (212) and the first cavity (211) are acute angles, and the liquid inlet cavity (213) is further communicated with the liquid inlet (11);
second main part (22) are provided with second cavity (221) and play liquid hole (222), second main part (22) accept in the accommodation space, and the outer wall of second main part (22) with the inner wall of shell (10) forms jointly and encircles play liquid chamber (223) of second cavity (221), go out liquid hole (222) intercommunication second cavity (221) and play liquid chamber (223), go out liquid chamber (223) still with liquid outlet (12) intercommunication, second cavity (221) with first cavity (211) intercommunication.
2. A cleaning swab according to claim 1, further comprising a liquid inlet (14) and a liquid outlet (15);
one end of liquid inlet joint (14) connect in inlet (11), the other end of liquid inlet joint (14) be used for with malleation liquid storage pot intercommunication, the one end of going out liquid joint (15) connect in liquid outlet (12), the other end that goes out liquid joint (15) be used for with negative pressure waste liquid jar intercommunication.
3. A cleaning swab according to claim 2, wherein the axis of the inlet (14) is tangential to the inlet chamber (213).
4. A cleaning swab according to claim 3, wherein the feed direction of the feed opening (212) forms an obtuse angle with the feed direction of the feed connection (14).
5. The cleaning swab according to claim 4, wherein the first cavity (211) comprises a first chamber (2111) and a second chamber (2112), wherein the second cavity (221) comprises a third chamber (2211) and a fourth chamber (2212), wherein the first chamber (2111), the second chamber (2112), the third chamber (2211) and the fourth chamber (2212) are in coaxial communication, wherein the second chamber (2112) has the largest diameter, and wherein the first chamber (2111), the third chamber (2211) and the fourth chamber (2212) have successively smaller diameters.
6. A cleaning swab according to claim 5, wherein the inlet aperture (212) communicates with the bottom of the second chamber (2112).
7. A cleaning swab according to claim 6, wherein the inlet opening (212) is provided in a plurality.
8. A cleaning swab according to claim 7, wherein the plurality of inlet openings (212) are distributed circumferentially and equidistantly around the inlet chamber (213).
9. A cleaning swab according to claim 5, wherein the junction between the second chamber (2112) and the third chamber (2211) is provided with a chamfered transition, and the junction between the third chamber (2211) and the fourth chamber (2212) is provided with a chamfered transition.
10. A cleaning system comprising a cleaning swab according to any one of claims 1 to 9, a positive pressure reservoir and a negative pressure waste reservoir;
the positive pressure liquid storage tank is connected with the liquid inlet (11), and the negative pressure liquid storage tank is connected with the liquid outlet (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531007.0U CN211563920U (en) | 2019-09-09 | 2019-09-09 | Cleaning swab and cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531007.0U CN211563920U (en) | 2019-09-09 | 2019-09-09 | Cleaning swab and cleaning system |
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| Publication Number | Publication Date |
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| CN211563920U true CN211563920U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921531007.0U Active CN211563920U (en) | 2019-09-09 | 2019-09-09 | Cleaning swab and cleaning system |
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| CN (1) | CN211563920U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177646A (en) * | 2021-12-07 | 2022-03-15 | 常州市易用科技有限公司 | Kerogen acidizing treatment device |
| WO2023046186A1 (en) * | 2021-09-27 | 2023-03-30 | 中元汇吉生物技术股份有限公司 | Sampling needle cleaning device and sampling needle cleaning system applying device |
-
2019
- 2019-09-09 CN CN201921531007.0U patent/CN211563920U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046186A1 (en) * | 2021-09-27 | 2023-03-30 | 中元汇吉生物技术股份有限公司 | Sampling needle cleaning device and sampling needle cleaning system applying device |
| CN114177646A (en) * | 2021-12-07 | 2022-03-15 | 常州市易用科技有限公司 | Kerogen acidizing treatment device |
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Address after: 518000 floors 4-10, building 3, Geya science and Technology Park, mashantou community clock base, Matian street, Guangming New Area, Shenzhen, Guangdong Patentee after: Shenzhen Jinrui Biotechnology Co.,Ltd. Address before: 518000 floors 4-10, building 3, Geya science and Technology Park, mashantou community clock base, Matian street, Guangming New Area, Shenzhen, Guangdong Patentee before: GENRUI BIOTECH Inc. |
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