CN221141717U

CN221141717U - Straw for biological cell culture

Info

Publication number: CN221141717U
Application number: CN202322046203.1U
Authority: CN
Inventors: 李然; 封苏娅; 孙琰婷
Original assignee: Jiangsu Selpu Biotechnology Co ltd
Current assignee: Jiangsu Selpu Biotechnology Co ltd
Priority date: 2023-08-01
Filing date: 2023-08-01
Publication date: 2024-06-14
Anticipated expiration: 2033-08-01

Abstract

The utility model discloses a suction pipe for biological cell culture, which relates to the technical field of cell biology and specifically comprises a suction pipe body and a protective structure, wherein the suction pipe body comprises a connecting part, a pipe body part, a replacement part and a suction pipe, the connecting part is connected with the pipe body part through the replacement part, and the suction pipe is fixedly connected with the pipe body part; the protection structure is arranged on the pipe body and comprises a telescopic frame, a connecting disc, a rotary sleeve and a rotary handle; the rotating handle is connected with the rotating sleeve through a connecting rod, the rotating sleeve is movably connected with the connecting disc, and the connecting disc is connected with the pipe body through a telescopic frame. This a straw for biological cell culture usefulness, through the setting of straw body structure, the volume of this straw can set up according to the demand, but this straw inserts the position size in the liquid and can not change, makes this straw adaptable multiple demand, and this straw of being convenient for is arranged in biological cell culture in-process and carries out the transfer of liquid.

Description

Straw for biological cell culture

Technical Field

The utility model relates to the technical field of cell biology, in particular to a straw for biological cell culture.

Background

In the course of culturing biological cells, pipetting operations such as pipetting the culture medium or the cell sap may be required. In the prior art, some patents related to pipettes for biological cell culture are disclosed, such as patent application numbers CN202022363080.0, CN202222849437.5, CN202020988711.5, etc., because the pipette structures disclosed in these patents are all fixed, i.e. the inner cavity volume of the pipette is fixed, when the volume of liquid to be removed exceeds the inner cavity volume of the pipette, the user needs to repeatedly operate the pipetting steps for multiple times by using the pipette, thus reducing the working efficiency of the pipette, so that the pipette cannot adapt to various requirements; in the pipetting process, the head of the pipette is always in a state of being exposed in the air, pollutants in the air can be attached to the suction part of the pipette or can pollute the liquid in the pipette through the liquid inlet and outlet port of the pipette, the pipette is used for transferring the liquid for multiple times, the possibility of pollution of the liquid is greatly increased, and the use reliability of the pipette is reduced; based on this, the application proposes a pipette for use in biological cell culture.

Disclosure of utility model

The utility model provides a straw for biological cell culture, which solves the problems that the volume of the straw proposed in the background art is fixed and can not meet various requirements; the pipette head is always in a state of being exposed to air in the pipetting process, and the liquid in the pipette has the risk of pollution.

The utility model provides the following technical scheme: the straw for biological cell culture is of a split type structure, comprises a tube body part, a connecting part and a replacing part, wherein the tube body part, the connecting part and the replacing part are connected through threads, and the replacing part or the connecting part with different volumes is replaced, so that the straw can absorb liquid with different volumes, the straw can absorb liquid with various volumes in the biological cell culture process, the adaptability of the straw is improved, and the size of the bottom end of the straw is unchanged when the internal volume of the straw is changed, so that the adaptability of the straw is further improved; the suction end of the suction pipe is provided with the protection structure, when the suction pipe sucks liquid, the suction part of the suction pipe is exposed, when the suction pipe is transferred, the suction part of the suction pipe is positioned in the protection structure, the protection structure seals the suction part of the suction pipe, the possibility of liquid pollution in the suction pipe is reduced, the reliability of the suction pipe during pipetting is improved, and the biological cell culture is facilitated.

A straw for biological cell culture comprises a straw body and a protective structure, wherein the straw body comprises a connecting part, a tube body part, a replacement part and a suction tube; the middle part of one end of the connecting part is fixedly connected with a connector, a filter membrane is fixedly connected in an inner cavity of the end of the connecting part, the other end of the connecting part is connected with the replacing part through a threaded pipe, the other end of the replacing part is in threaded connection with the pipe body part, the outer ring of the end of the pipe body part is sequentially and fixedly connected with an upper limiting ring and a lower limiting ring, and the outer ring of the other end of the pipe body part is fixedly connected with a suction pipe;

The protection structure is connected with the pipe body, the protection structure comprises a telescopic frame fixedly connected with one end of the pipe body far away from the replacement part, a connecting disc fixedly connected with the other end of the telescopic frame and movably connected with the suction pipe, a rotary sleeve movably connected with the pipe body and a rotary handle, a through hole matched with the suction pipe is formed in the rotary sleeve, the connecting disc is located in an inner cavity of the rotary sleeve, the connecting disc is movably connected with the rotary sleeve, the rotary handle is fixedly connected with the rotary sleeve through a connecting rod, and the rotary handle is located between an upper limiting ring and a lower limiting ring.

Preferably, the outer ring of one end of the tube body part far away from the suction tube and the outer ring of one end of the connecting part far away from the connector are respectively provided with external threads, and the inner wall of the threaded tube is provided with internal threads matched with the external threads.

Preferably, the inner wall of one end of the connecting part is provided with an internal thread matched with the external thread, the inner diameter of the other end of the connecting part, the inner diameter of the connecting part and the inner diameter of the pipe body are the same, and the outer surface of the other end of the connecting part is provided with an external thread matched with the threaded pipe.

Preferably, the connecting disc is provided with another through hole matched with the suction tube, and the inner diameter of the through hole is larger than the outer diameter of the suction tube.

Preferably, the distance between the upper limiting ring and the lower limiting ring is not smaller than the length value of the suction pipe, and the height value of the rotary sleeve is larger than the distance value between the upper limiting ring and the lower limiting ring.

Preferably, the outer surface of the lower limiting ring is provided with two limiting protrusions, and one connecting rod is positioned between the two limiting protrusions.

Preferably, the straw body and the protective structure are both made of transparent materials.

Compared with the prior art, the utility model has the following beneficial effects:

1. this a straw for biological cell culture usefulness, through the setting of straw body structure, the volume of this straw can set up according to the demand, but this straw inserts the position size in the liquid and can not change, makes this straw adaptable multiple demand, and this straw of being convenient for is arranged in the biological cell culture in-process and carries out the transfer of liquid, and can improve staff's work efficiency.

2. This a straw for biological cell culture usefulness, through the setting of protective structure, protective structure can seal the suction tube of straw body, avoids this straw at transfer liquid in-process, and liquid is by air pollution, improves the security when this straw uses.

Drawings

FIG. 1 is a schematic view of a suction tube of the present utility model positioned outside a protective structure;

FIG. 2 is a schematic view of a suction tube with a protective structure according to the present utility model;

FIG. 3 is a schematic view of a straw body according to the present utility model;

FIG. 4 is a schematic view of a pipe body of the present utility model;

FIG. 5 is an exploded view of the structure of the present utility model;

FIG. 6 is a schematic view of the interior of the straw body according to the present utility model;

fig. 7 is a schematic view of a telescopic frame of the structure of the present utility model.

In the figure: 1. a straw body; 2. a protective structure; 3. a connection part; 4. a tube body portion; 5. a replacement part; 6. a connector; 7. a filter membrane; 8. a suction tube; 9. a threaded tube; 10. a rotating handle; 11. a rotating sleeve; 12. a lower limit ring; 13. an upper limit ring; 14. a connecting disc; 15. a telescoping frame; 16. a through hole; 17. a connecting rod; 18. and a limit protrusion.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model provides an embodiment: a straw for biological cell culture is used, includes straw body 1 and protective structure 2, and straw body 1 is arranged in absorbing the liquid that needs to shift in the biological cell culture process, and protective structure 2 is arranged in protecting the suction end of straw body 1 in the liquid transfer process, avoids the suction end of straw body 1 to expose in the air, and then can reduce the interior liquid contaminated possibility of straw, the use of this straw of being convenient for.

The straw body 1 is of a split structure and comprises a connecting part 3, a tube body part 4, a replacing part 5 and a suction tube 8.

The middle part fixedly connected with connector 6 of connecting portion 3 one end utilizes connector 6, and this straw of being convenient for is in the same place with the pipettor among the prior art, and the inner chamber fixedly connected with filter membrane 7 of this end of connecting portion 3, through the setting of filter membrane 7, can filter the air in the straw body 1, avoids the inside pollution that is of pipettor, and the surface of the connecting portion 3 other end is equipped with the external screw thread, and the other end of connecting portion 3 has screwed pipe 9 through external screw thread connection.

The inner diameter of one end of the replacement part 5 is the same as the inner diameter of the connecting part 3, the outer surface of the end of the replacement part 5 is provided with external threads matched with the threaded pipe 9, and the other end of the connecting part 3 and one end of the replacement part 5 can be connected together through the arrangement of the threaded pipe 9. The inner wall of the other end of the replacement part 5 is provided with an internal thread, and the inner wall of the threaded pipe 9 is also provided with an internal thread.

The outer lane of body 4 one end is equipped with the external screw thread, and the other end and the body 4 threaded connection of change portion 5, the internal diameter of body 4 is the same with the internal diameter of connecting portion 3, the outer lane fixedly connected with suction tube 8 of body 4 other end.

Through the above description, the parts forming the straw body 1 can be quickly disassembled and assembled, and when the volume of the replacement part 5 or the connection part 3 is changed, the volume of the straw body 1 is changed, so that the straw body 1 can adapt to the pipetting demands in the process of culturing various warmed cells, and the adaptability of the straw body 1 is improved.

The straw body 1 is made of transparent material, and in some embodiments of the application, the straw body 1 is made of transparent glass.

One end of the tube body 4 far away from the suction tube 8 is provided with an upper limit ring 13 and a lower limit ring 12, the lower limit ring 12 is positioned on one side of the upper limit ring 13 close to the suction tube 8, and the outer side wall of the lower limit ring 12 is provided with two limit protrusions 18.

The protective structure 2 is arranged on the pipe body 4, and the protective structure 2 comprises a telescopic frame 15, a connecting disc 14, a rotary sleeve 11 and a rotary handle 10.

One end of the telescopic frame 15 is fixedly connected with one end of the tube body 4 connected with the suction tube 8, the suction tube 8 is positioned in the inner cavity of the telescopic frame 15, and in some embodiments of the application, the telescopic frame 15 is composed of a plurality of rectangular frames, and two adjacent rectangular frames are connected through a sliding groove sliding block.

The other end fixedly connected with connection pad 14 of flexible frame 15, the outer lane of connection pad 14 is equipped with the through hole 16 with the suction tube 8 adaptation, through this through hole 16, connection pad 14 is in swing joint's state with suction tube 8, and the internal diameter of through hole 16 is greater than the external diameter of suction tube 8, the specific size of through hole 16 sets up according to the demand, so set up, when the position changes between connection pad 14 and the body portion 4, connection pad 14 can not be touched to suction tube 8, and when flexible frame 15 is in the state of full extension, connection pad 14 is located the outside of suction tube 8.

The rotary sleeve 11 and the pipe body 4 are in a movable connection state, the connecting disc 14 is positioned in the inner cavity of the rotary sleeve 11, the connecting disc 14 and the rotary sleeve 11 are in a movable connection state, the connecting disc 14 can be driven to move when the rotary sleeve 11 moves, a through hole 16 is also formed in the outer ring of the rotary sleeve 11, and the two through holes 16 can be in an overlapped state.

The rotating handle 10 is positioned between the upper limiting ring 13 and the lower limiting ring 12, the rotating handle 10 and the rotating sleeve 11 are connected through the connecting rod 17, the rotating handle 10 or the rotating sleeve 11 are fixedly connected with the connecting rod 17, one connecting rod 17 is positioned between two limiting protrusions 18, the limiting protrusions 18 can position the connecting rod 17, when the connecting rod 17 is contacted with one limiting protrusion 18, the two through holes 16 can be overlapped or staggered, and when the connecting rod 17 is contacted with the other limiting protrusion 18, the two through holes 16 can be staggered or overlapped, so that a user can conveniently rotate the rotating handle 10.

As can be seen from the above description, the user can change the position of the rotary sleeve 11 and drive the rotary sleeve 11 to rotate by manipulating the rotary handle 10, when the rotary sleeve 11 rotates, the through holes 16 on the rotary sleeve 11 and the through holes 16 on the connecting disc 14 can be overlapped or staggered, when the two through holes 16 are staggered, the inner cavity of the rotary sleeve 11 is in a sealed state, and when the two through holes 16 are overlapped, the suction tube 8 can extend to the outer side of the protective structure 2 through the two through holes 16.

The upper limiting ring 13 and the lower limiting ring 12 limit the rotating handle 10, the distance between the upper limiting ring 13 and the lower limiting ring 12 is not smaller than the length value of the suction pipe 8, the height value of the rotating sleeve 11 is larger than the distance value between the upper limiting ring 13 and the lower limiting ring 12, and the specific size of the protective structure 2 is set according to requirements.

As is apparent from the above description, when the stem 10 is in contact with the lower stopper ring 12, the connection disc 14 can be located outside the suction tube 8, and the end of the swivel sleeve 11 away from the suction tube 8 is always in contact with the tube body 4, so that the suction tube 8 can be sealed, and when the stem 10 is in contact with the upper stopper ring 13, the suction tube 8 is exposed, facilitating the suction of liquid by the suction tube.

When the protective structure 2 is used, damping is arranged between the rotating handle 10 and the pipe body 4, and when a user applies an external force to the rotating handle 10, the position of the rotating handle 10 can be changed; when the restriction of the user on the stem 10 is released, the position of the stem 10 can be kept unchanged under the damping effect between the stem 10 and the pipe body 4, thereby facilitating the use of the straw.

The above-mentioned protective structure 2 is made of transparent material, so that a user can observe the condition of the suction tube 8 in the protective structure 2, and in some embodiments of the present application, the protective structure 2 is made of transparent plastic, and the inner wall of the rotating handle 10 is fixedly connected with anti-slip rubber, so as to increase the damping between the rotating handle 10 and the tube body 4.

To sum up: when the pipette for biological cell culture is used, the connecting part 3 or the replacing part 5 with proper volume is replaced according to the liquid amount for biological cell culture which is required to be sucked, so that the volume of the pipette is changed, and a user fixes the pipette with a pipette in the prior art.

Before sucking the solution, the user rotates the rotary handle 10, the rotary handle 10 drives the rotary sleeve 11 to rotate through the connecting rod 17 fixedly connected with the rotary handle 10 until the connecting rod 17 contacts with the other limiting boss 18, at the moment, the through hole 16 on the rotary sleeve 11 is overlapped with the through hole 16 on the connecting disc 14, the user moves the rotary handle 10 until the rotary handle 10 contacts with the upper limiting ring 13, the rotary handle 10 drives the rotary sleeve 11 to move through the connecting rod 17 in the moving process, the rotary sleeve 11 drives the connecting disc 14 to move, the telescopic frame 15 is compressed, the rotary sleeve 11 and the connecting disc 14 are positioned on one side of the suction tube 8 close to the rotary handle 10, the suction tube 8 is exposed, and when the suction tube 8 is inserted into the liquid, the suction tube can suck the liquid

After the liquid is sucked, when the suction tube 8 is separated from the liquid, a user moves the rotating handle 10, so that the rotating handle 10 is rotated after the rotating handle 10 is contacted with the lower limiting ring 12 again until the two through holes 16 are in a staggered state again, and at the moment, the suction tube 8 is sealed on the protective structure 2, so that the probability of pollution of the liquid in the suction tube in the transferring process is reduced.

Standard parts used in the present utility model can be purchased from the market, the special-shaped parts can be customized according to the descriptions of the specification and the drawings, the specific connection modes of the parts are conventional means such as bolts, rivets, welding and the like which are mature in the prior art, and the machines, the parts and the equipment are conventional models in the prior art, so that details which are not described in detail in the specification belong to the prior art which is well known to the person skilled in the art, and although the embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a straw for biological cell culture usefulness, includes straw body (1) and protective structure (2), its characterized in that: the suction pipe body (1) comprises a connecting part (3), a pipe body part (4), a replacement part (5) and a suction pipe (8); the middle part of one end of the connecting part (3) is fixedly connected with a connector (6), a filter membrane (7) is fixedly connected in an inner cavity of the end of the connecting part (3), the other end of the connecting part (3) is connected with the replacing part (5) through a threaded pipe (9), the other end of the replacing part (5) is in threaded connection with the pipe body part (4), an outer ring of the end of the pipe body part (4) is sequentially and fixedly connected with an upper limiting ring (13) and a lower limiting ring (12), and an outer ring of the other end of the pipe body part (4) is fixedly connected with an suction pipe (8);

The protection structure (2) is connected with the pipe body (4), the protection structure (2) comprises a telescopic frame (15) fixedly connected with one end of the pipe body (4) away from the replacement part (5), a connecting disc (14) fixedly connected with the other end of the telescopic frame (15) and movably connected with the suction pipe (8), a rotary sleeve (11) movably connected with the pipe body (4) and a rotary handle (10), a through hole (16) matched with the suction pipe (8) is formed in the rotary sleeve (11), the connecting disc (14) is located in an inner cavity of the rotary sleeve (11), the connecting disc (14) is movably connected with the rotary sleeve (11), the rotary handle (10) is fixedly connected with the rotary sleeve (11) through a connecting rod (17), and the rotary handle (10) is located between the upper limiting ring (13) and the lower limiting ring (12).

2. A pipette for use in biological cell culture as defined in claim 1, wherein: the outer ring of one end of the pipe body (4) far away from the suction pipe (8) and the outer ring of one end of the connecting part (3) far away from the connector (6) are both provided with external threads, and the inner wall of the threaded pipe (9) is provided with internal threads matched with the external threads.

3. A pipette for use in biological cell culture as defined in claim 2, wherein: the inner wall of connecting portion (3) one end is equipped with the internal thread with external screw thread adaptation, the internal diameter of connecting portion (3) other end, the internal diameter of connecting portion (3) and the internal diameter of body portion (4) are the same, the surface of connecting portion (3) other end is equipped with the external screw thread with screwed pipe (9) adaptation.

4. A pipette for use in biological cell culture as defined in claim 1, wherein: the connecting disc (14) is provided with another through hole (16) matched with the suction tube (8), and the inner diameter of the through hole (16) is larger than the outer diameter of the suction tube (8).

5. A pipette for use in biological cell culture as defined in claim 1, wherein: the distance between the upper limiting ring (13) and the lower limiting ring (12) is not smaller than the length value of the suction pipe (8), and the height value of the rotary sleeve (11) is larger than the distance value between the upper limiting ring (13) and the lower limiting ring (12).

6. A pipette for use in biological cell culture as defined in claim 1, wherein: the outer surface of the lower limiting ring (12) is provided with two limiting protrusions (18), and one connecting rod (17) is positioned between the two limiting protrusions (18).

7. A pipette for use in biological cell culture as defined in claim 1, wherein: the straw body (1) and the protective structure (2) are made of transparent materials.