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CN113588345A - Liquid taking-out device - Google Patents

Liquid taking-out device Download PDF

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Publication number
CN113588345A
CN113588345A CN202110910424.1A CN202110910424A CN113588345A CN 113588345 A CN113588345 A CN 113588345A CN 202110910424 A CN202110910424 A CN 202110910424A CN 113588345 A CN113588345 A CN 113588345A
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CN
China
Prior art keywords
needle
fixing plate
catheter
plate
assembly
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.)
Pending
Application number
CN202110910424.1A
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Chinese (zh)
Inventor
何俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Bms Medicaltech Co ltd
Original Assignee
Wuhan Bms Medicaltech Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Bms Medicaltech Co ltd filed Critical Wuhan Bms Medicaltech Co ltd
Priority to PCT/CN2021/113564 priority Critical patent/WO2022198908A1/en
Publication of CN113588345A publication Critical patent/CN113588345A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention relates to a liquid taking-out device, which comprises a pressing plate and a catheter fixing plate; the pressing plate is arranged on the side edge of the catheter fixing plate, and the pressing plate is connected with the catheter fixing plate through an elastic component to form a clamping area for the packaging tube; the liquid taking device also comprises a needle assembly, and the needle is fixedly or detachably arranged on the needle assembly; the needle head assembly is connected with the catheter fixing plate through a connecting part, so that after the needle head assembly is connected with the catheter fixing plate, the tip end of the needle head can penetrate through the catheter fixing plate and is located in the clamping area. According to the invention, the needle head is directly fixed on the needle head fixing plate, so that the hand of an operator can be prevented from contacting the needle head in the process of penetrating the needle head into the cylindrical catheter, and the hand of the operator is far away from the needle head in the pressing process, thereby effectively avoiding contact pollution and greatly improving the operation safety.

Description

Liquid taking-out device
Technical Field
The invention relates to the technical field of liquid taking tools, in particular to a liquid taking device.
Background
At present, in industrial or other fields, a tubular packaging structure is often adopted for packaging liquid, namely, the liquid is packaged into a section of packaging tube. For example, some glue in industry, some reagent for biochemical experiment, etc. are all used in the packaging mode. The packaging mode can quantitatively package required liquid, take the whole tube for use and solve the problem of inconvenient operation in dosage control.
Such packaging is also medically available. For example, blood, is collected and stored at a blood station during donation, and the stored sample is heat-sealed in a section of a blood cylindrical conduit. The use of such retained blood samples for matching with the blood of patients in need of transfusion is an important step that is not advisable before clinical transfusion therapy. For another example, there is a currently emerging method of treatment of severe dry eye through the bioremediation treatment of autologous serum extracted from whole blood, which is autologous serum that is produced and then also heat-sealed in a section of blood cylindrical catheter. When in use, the autologous serum is taken out and then treated by eye dropping.
However, with this type of packaging, there is a certain difficulty in removing the liquid. In the prior art, liquid is generally taken by a manual mode. The cylindrical catheter is cut or punctured with scissors or a sharp tool and then manually squeezed out. Not only is the operation inconvenient, but also when the cylindrical conduit is cut or punctured by using a tool, the liquid in the cylindrical conduit has the probability of flowing out in the puncturing process, the probability of being contaminated by an operator and the safety risk of contact pollution exist.
Disclosure of Invention
Based on the above, the present invention provides a liquid withdrawal device to avoid contact contamination when puncturing a cylindrical catheter.
The technical scheme for solving the technical problems is as follows: a liquid extraction device comprises a pressing plate and a catheter fixing plate; the pressing plate is arranged on the side edge of the catheter fixing plate, and the pressing plate is connected with the catheter fixing plate through an elastic component to form a clamping area for the packaging tube; the liquid taking device also comprises a needle assembly, and the needle is fixedly or detachably arranged on the needle assembly; the needle head assembly is connected with the catheter fixing plate through a connecting part, so that after the needle head assembly is connected with the catheter fixing plate, the tip end of the needle head can penetrate through the catheter fixing plate and is located in the clamping area.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the pressing plate and the catheter fixing plate are integrally formed.
Further, the needle assembly is a needle fixing block, and the connecting part is a clamping type connecting piece, a threaded connecting piece or a plug-in connecting piece for connecting the needle assembly with the catheter fixing plate.
Preferably, the needle is fixedly mounted within the needle assembly.
Further, the pressing plate is connected with the tail part of the catheter fixing plate through an elastic component.
Further, the needle assembly is a needle fixing plate, and the connecting part is an elastic connecting part for connecting the needle assembly with the catheter fixing plate.
Preferably, the needle is fixedly mounted within the needle assembly.
Preferably, a locking assembly is disposed between the catheter securement plate and the needle assembly.
Preferably, the locking assembly is a snap-on locking assembly.
Preferably, the locking assembly comprises a clamping groove and a buckle which are matched with each other.
Preferably, the clamping groove is formed in one side, located on the needle assembly, of the catheter fixing plate, and the buckle is formed in one side, located on the catheter fixing plate, of the needle assembly.
Preferably, one side of the catheter fixing plate, which is far away from the needle head assembly, is provided with concave-convex grains; one side of the needle head assembly, which is far away from the catheter fixing plate, is also provided with raised grains.
Furthermore, a catheter fixing assembly is arranged on one side, close to the pressing plate, of the head of the catheter fixing plate.
Preferably, the catheter fixing component comprises a catheter groove, one side of the catheter groove is hollow, and the other opposite side of the catheter groove is provided with a catheter hole.
Preferably, the elastic component is provided with at least one groove.
Furthermore, a hollow groove is formed in the plate body of the conduit fixing plate.
Preferably, the head of the catheter fixing plate and the head of the needle assembly are connected through an elastic pulling plate.
Furthermore, the main body of the liquid taking-out device is made of PP, PE, POM, PA, HDPE, PET or modified materials of the PP, the PE, the POM, the PA, the HDPE and the PET.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
1. according to the invention, the needle head is directly fixed on the needle head fixing plate, so that the hand of an operator can be prevented from contacting the needle head in the process of penetrating the needle head into the cylindrical catheter, and the hand of the operator is far away from the needle head in the pressing process, thereby effectively avoiding contact pollution and greatly improving the operation safety;
2. by providing the protective slot and locating the end of the needle within the protective slot, inadvertent contact of the needle by the operator's hand is further avoided, further reducing the likelihood of contact contamination.
3. The locking assembly is arranged on the needle groove and one side of the needle far away from the elastic component, so that the pressing moment when the locking assembly is pressed to enable the needle to penetrate into the cylindrical catheter is increased, and the labor is saved; meanwhile, the concave-convex grains are arranged at the locking assembly, so that force can be applied more easily during pressing, and the pressing is easier.
4. By providing at least one recess in the resilient member, material collapse during injection moulding can be avoided.
Drawings
Fig. 1 is a schematic structural view of a liquid discharge apparatus according to embodiment 3 of the present invention;
FIG. 2 is an enlarged view of a portion of area A of FIG. 1;
fig. 3 is a schematic structural view of a liquid discharge apparatus according to embodiment 2 of the present invention;
fig. 4 is a schematic structural view of a liquid discharge apparatus provided in embodiment 1 of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. a pressing plate; 2. a catheter fixing plate; 21. a needle slot; 22. a conduit groove; 23. a conduit aperture; 24. hollowing out the grooves; 3. a needle assembly; 4. an elastic member; 41. a groove; 5. a needle head; 6. a connecting member; 7. a locking assembly; 71. a card slot; 72. buckling; 8. an elastic pulling plate; 9. concave-convex pattern.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The invention relates to a liquid taking device, which comprises a pressing plate 1 and a catheter fixing plate 2. The pressing plate 1 is arranged at the side edge of the catheter fixing plate 2, and the pressing plate 1 and the catheter fixing plate 2 are connected through an elastic component 4 to form a clamping area for a packaging tube. The core of the invention is that a pressing plate 1 and a conduit fixing plate 2 form a clamping area, and liquid in a packaging tube is extruded out by virtue of the pressing action of the two plates. Therefore, the assembly position of the pressing plate 1 can be any, and can be connected to the side of the catheter fixing plate 2 or the tail part of the catheter fixing plate 2. The elastic member 4 is used to ensure that the pressing plate 1 can be returned after the pressing operation of the pressing plate 1, and therefore, the elastic member 4 may be a bypass portion or an elastic piece.
The liquid extraction device of the present invention further comprises a needle assembly 3, and the needle 5 is fixedly or detachably mounted on the needle assembly 3. The needle assembly 3 is connected with the catheter fixing plate 2 through a connecting part 6, so that after the needle assembly 3 is connected with the catheter fixing plate 2, the tip of the needle 5 can penetrate through the catheter fixing plate 2 and is located in the clamping area. The needle assembly 3 is also a core part of the present invention and its arrangement directly determines whether the tip of the needle 5 can penetrate the packaging tube more smoothly.
The above-mentioned position is defined only for convenience of description, and there is no limitation on the scope of the present invention, which is merely convenient for those skilled in the art to understand the structure of the present invention.
Example 1
As shown in fig. 4, the liquid removing apparatus of the present embodiment includes a pressing plate 1 and a catheter fixing plate 2, wherein the pressing plate 1 is disposed at a side of the catheter fixing plate 2, and the pressing plate 1 and the catheter fixing plate 2 are connected by an elastic member 4 to form a clamping area for a packaging tube. In the present embodiment, the pressing plate 1 is connected to the side wall of the catheter fixing plate 2, and may be connected to the rear portion of the catheter fixing plate 2 or may be connected to the middle portion of the catheter fixing plate 2. In this embodiment, the elastic member 4 is an elastic detour portion.
The liquid taking device also comprises a needle assembly 3, and the needle 5 is fixedly arranged on the needle assembly 3. In this embodiment, the needle assembly 3 is a needle fixing block or a needle fixing plate. The needle assembly 3 is connected with the catheter fixing plate 2 through a connecting part 6, so that after the needle assembly 3 is connected with the catheter fixing plate 2, the tip of the needle 5 can penetrate through the catheter fixing plate 2 and is located in the clamping area. In this embodiment, the connection member 6 is a snap-fit connection member, a screw connection member, or a plug connection member for connecting the needle assembly 3 and the catheter fixing plate 2.
In the prior art, the cylindrical catheter is usually punctured by holding a needle by hand or puncturing the cylindrical catheter after the needle is arranged on a certain structure, the hand of an operator can contact with the needle, and the possibility of pollution is generated. And when the needle pierces the cylindricality pipe, the liquid in the cylindricality pipe has the probability can flow out at the in-process that pierces, has the probability to be infected with by the operator.
Thus, the needle 5 of the present invention is directly secured to the needle assembly 3, eliminating the need for the operator to mount the needle 5 and preventing the operator from contacting the needle 5. The operator can directly hold the needle assembly 3 to complete the operation.
In this embodiment, the pressing plate 1, the catheter fixing plate 2 and the needle assembly 3 are made of PP, PE, POM, PA, HDPE, PET or modified materials thereof. The pressing plate 1 and the catheter fixing plate 2 can be manufactured by injection molding and integral molding.
The present embodiment also has a preferable scheme in which the structure of the catheter fixing plate 2 is optimally designed. A catheter fixing component is arranged on one side, close to the pressing plate 1, of the head of the catheter fixing plate 2. So as to fix the packaging tube and avoid the displacement of the packaging tube during extrusion. The catheter fixing component can be a fixing clip or a fixing groove.
The above preferred embodiments also have a more preferred optimized design. The catheter fixing component comprises a catheter groove 22, one side of the catheter groove 22 is hollow, and the other opposite side is provided with a catheter hole 23. A needle slot 21 with a size matched with the needle 5 is arranged on the catheter fixing plate 2, so that the needle 5 can penetrate through the catheter fixing plate 2.
In order to ensure the yield of injection molding and avoid the collapse of materials during injection molding. Through continuous experiments and optimized design, the inventor arranges a hollow groove 24 on the plate body of the conduit fixing plate 2. The plurality of hollow grooves 24 are uniformly arranged along two sides of the plate body of the conduit fixing plate 2. Meanwhile, at least one groove 41 is formed on the elastic member 4. So as to ensure that the elastic part 4 can be well injection molded during injection molding.
Example 2
As shown in fig. 1 to 3, in this embodiment, compared with embodiment 1, the pressing plate 1 and the catheter fixing plate 2 have substantially the same structure, and the difference is that the structure of the needle assembly 3 is different.
In this embodiment, the needle assembly 3 is a needle fixing plate, and the needle 5 is fixedly mounted at the front end of the needle fixing plate. The needle fixing plate is connected with the catheter fixing plate 2 through a connecting part 6. In this embodiment, the connecting component 6 is an elastic circuitous part connecting the needle fixing plate and the catheter fixing plate 2.
In this embodiment, the pressing plate 1, the catheter fixing plate 2 and the needle assembly 3 are made of PP, PE, POM, PA, HDPE, PET or modified materials thereof. The pressing plate 1, the catheter fixing plate 2 and the needle fixing plate can be manufactured in an injection molding and integral forming mode.
In order to ensure that the connecting part 6 can be injection-molded well, the connecting part 6 is also provided with a groove.
When in use, after the packaging tube is assembled, the needle head 5 can be penetrated into the packaging tube only by pressing the needle head fixing plate and the catheter fixing plate 2.
In order to ensure that the needle 5 of the present embodiment can be stably retained in the packaging tube after being penetrated, so as not to fall out. In this embodiment, a locking assembly 7 is disposed between the needle fixing plate and the catheter fixing plate 2, and is used to lock and fix the needle fixing plate and the catheter fixing plate 2 after being pressed. The locking component 7 is preferably arranged at the head ends of the needle fixing plate and the catheter fixing plate 2, and the locking component 7 can be a clamping locking piece or a splicing locking piece. The preferred embodiment uses a snap lock comprising a snap groove 71 and a snap 72, wherein the snap groove 71 and the snap 72 are fixedly mounted on the catheter fixing plate 2 and the needle fixing plate, respectively.
In order to ensure that the catheter fixing plate 2 and the needle fixing plate can be reset well after the locking assembly 7 is opened, the embodiment is also optimized in structural design. The head ends of the catheter fixing plate 2 and the needle fixing plate are provided with an elastic pulling plate 8, so that the head of the catheter fixing plate 2 is fixedly connected with the head of the needle fixing plate through the elastic pulling plate 8. Thus, under the double elastic force action of the connecting part 6 and the elastic pulling plate 8, better reset can be realized.
In order to ensure that an operator can hold and operate conveniently and avoid the device from slipping off during operation, in a more preferable design of the embodiment, one side of the catheter fixing plate 2, which is far away from the needle head assembly 3, is provided with a concave-convex pattern 9; the side of the needle assembly 3 away from the catheter fixing plate 2 is also provided with a raised grain 9.
Example 3
This embodiment is substantially the same as embodiment 2 in terms of the overall structure, except for the connection structure of the pressing plate 1 and the catheter fixing plate 2. In this embodiment, the pressing plate 1 is connected to the tail of the catheter fixing plate 2.
The design can be suitable for the packaging tube with longer length.
The using method of the invention is as follows:
take example 2 or 3 as an example.
A cylindrical catheter is first placed between the pressing plate 1 and the catheter fixing plate 2, and one end of the packing tube is fitted into the catheter groove 22.
The catheter securement plate 2 and needle assembly 3 are then compressed, at which point the needle 5 pierces the cylindrical catheter and the locking assembly 6 is locked leaving the end of the needle 5 in the packaging.
Finally, the pressing plate 1 is pressed towards the direction of the guide tube fixing plate 2 to slowly extrude the liquid in the packaging tube. Along with the pressing plate 1 is gradually close to the catheter fixing plate 2, the liquid in the packaging tube gradually drips out from the other end, opposite to the needle point, of the needle head 5 along the thin tube in the needle head 5, and the liquid is accurately taken out.
In the process of taking out liquid, the needle head 5 does not need to be held by an operator, the needle head 5 does not need to be installed on the needle head component 3 by the operator, the hand of the operator does not contact with the needle head completely, the contamination is effectively avoided, and the operation safety is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (18)

1. The liquid taking-out device is characterized by comprising a pressing plate (1) and a catheter fixing plate (2); the pressing plate (1) is arranged on the side edge of the catheter fixing plate (2), and the pressing plate (1) is connected with the catheter fixing plate (2) through an elastic component (4) to form a clamping area for a packaging tube; the liquid taking device also comprises a needle assembly (3), and a needle (5) is fixedly or detachably arranged on the needle assembly (3); the needle head assembly (3) is connected with the catheter fixing plate (2) through the connecting part (6) so as to ensure that the tip of the needle head (5) can penetrate through the catheter fixing plate (2) and is located in the clamping area after the needle head assembly (3) is connected with the catheter fixing plate (2).
2. A liquid extraction device as claimed in claim 1, wherein the pressing plate (1) and the catheter retaining plate (2) are integrally formed.
3. A liquid removal device as claimed in claim 1, wherein said needle assembly (3) is a needle mounting block and said connection means (6) is a snap-fit connection, a threaded connection or a bayonet connection for connecting said needle assembly (3) to said catheter mounting plate (2).
4. A liquid removal device as claimed in claim 3, wherein the needle (5) is fixedly mounted within the needle assembly (3).
5. A liquid withdrawal apparatus as claimed in claim 1, wherein the pressing plate (1) and the rear portion of the catheter fixing plate (2) are connected by an elastic member (4).
6. A liquid removal device as claimed in claim 1, wherein said needle assembly (3) is a needle mounting plate and said connecting means (6) is a resilient connecting means for connecting the needle assembly (3) to the catheter mounting plate (2).
7. A liquid removal device as claimed in claim 6, wherein said needle (5) is fixedly mounted within the needle assembly (3).
8. A liquid removal device as claimed in claim 6, wherein a locking assembly (7) is provided between the catheter securement plate (2) and the needle assembly (3).
9. A liquid removal device as claimed in claim 8, wherein the locking assembly (7) is a snap-on locking assembly.
10. A liquid extraction device as claimed in claim 9, characterised in that the locking assembly (7) comprises a mutually complementary catch (71) and catch (72).
11. A liquid removal device as claimed in claim 10, wherein said catch (71) is provided on the side of said catheter securement plate (2) on said needle assembly (3) and said catch (62) is provided on the side of said needle assembly (3) on said catheter securement plate (2).
12. A liquid removal device as claimed in claim 6, wherein the catheter securement plate (2) is provided with a relief (9) on the side remote from the needle assembly (3); one side of the needle head component (3) far away from the catheter fixing plate (2) is also provided with concave-convex grains (9).
13. A liquid extraction device as claimed in claim 1, wherein a conduit-retaining assembly is provided on the side of the head of the conduit-retaining plate (2) adjacent the pressing plate (1).
14. A liquid removal device as claimed in claim 13, wherein said conduit securing assembly includes a conduit channel (22), said conduit channel (22) being hollow on one side and having a conduit aperture (23) on an opposite side.
15. A liquid removal device as claimed in claim 5, wherein said resilient member (4) defines at least one recess (41).
16. The fluid extraction device as claimed in claim 1, wherein the duct retaining plate (2) has a hollowed-out channel (24) formed in the body.
17. A liquid removal device as claimed in claim 6, wherein the head of the catheter securement plate (2) and the head of the needle assembly (3) are connected by a resilient pull plate (8).
18. The liquid extraction device as claimed in claim 1, wherein the main body of the liquid extraction device is made of PP, PE, POM, PA, HDPE, PET or modified materials thereof.
CN202110910424.1A 2021-03-25 2021-08-09 Liquid taking-out device Pending CN113588345A (en)

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PCT/CN2021/113564 WO2022198908A1 (en) 2021-03-25 2021-08-19 Liquid extraction device and liquid extraction method

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CN2021103169191 2021-03-25
CN202110316919.1A CN113125205A (en) 2021-03-25 2021-03-25 Liquid taking-out device

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US12379916B2 (en) 2022-03-10 2025-08-05 Terumo Bct, Inc. Communications and operation control of apheresis systems

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WO2022198908A1 (en) * 2021-03-25 2022-09-29 武汉佰美斯医疗科技有限公司 Liquid extraction device and liquid extraction method

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CN110742804A (en) * 2019-10-29 2020-02-04 武汉佰科宏成生物科技有限公司 A kind of straight tube type pipeline liquid extractor and liquid extracting method
CN211855949U (en) * 2019-11-05 2020-11-03 武汉佰科宏成生物科技有限公司 Split type U type liquid extractor
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CN211584525U (en) * 2020-02-14 2020-09-29 魏红云 Effusion extractor for endocrinology department
CN112120739A (en) * 2020-09-17 2020-12-25 刘高峰 Bone marrow puncture extraction device for hematology department
CN112263282A (en) * 2020-10-09 2021-01-26 厦门志煊生物科技有限公司 An eye fluid collector

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