CN217490928U

CN217490928U - Suction head of micro-liquid pipettor and preservation box thereof

Info

Publication number: CN217490928U
Application number: CN202221232689.7U
Authority: CN
Inventors: 陈高明; 胡玉梅
Original assignee: Biocomma Ltd
Current assignee: Biocomma Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-27
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a trace liquid pipettor's suction head and save box thereof, the suction head includes connecting piece and capillary, and the one end that the capillary was connected to the connecting piece sets up to the joint structure, and the joint structure is elastic construction, and the joint structure is used for the vertical fixed with the suction head. The preservation box comprises a box body and a fixing piece, wherein a plurality of clamping grooves are formed in the fixing piece, each clamping groove comprises a clamping cavity located at the upper end and a containing cavity located at the lower end, the clamping cavities are matched with the clamping structures of the connecting pieces, the clamping cavities are used for clamping the connecting pieces, and the containing cavities are used for containing capillary tubes extending out of the connecting pieces. The suction head is divided into a connecting piece and a capillary tube, and the connecting piece is provided with a clamping structure, so that the suction head can be vertically fixed through the elastic clamping structure; the fixing part in the storage box is provided with a clamping groove, a clamping cavity of the clamping groove is used for clamping and fixing the connecting part, a holding cavity of the clamping groove is used for holding the capillary tube, the capillary tube can be fixed in a hanging mode, the capillary tube is not in contact with the fixing part or the box body, and the capillary tube is protected.

Description

Suction head of micro-liquid pipettor and preservation box thereof

Technical Field

The utility model relates to a biochemical detection technology field, concretely relates to trace liquid pipettor's suction head and save box thereof.

Background

The liquid transfer device is used for transferring trace liquid and comprises a main body part and a suction head part, wherein the suction head part is provided with a capillary tube, and the capillary tube is used for being inserted into liquid to suck the liquid and discharging the liquid.

The suction head part of the conventional pipette is of an integral hard structure, and a capillary tube of the suction head part cannot be too long, otherwise the capillary tube is easy to break or bend during transportation, so that the tip of the conventional suction head part is short, and the use scene is limited.

SUMMERY OF THE UTILITY MODEL

The utility model provides a suction head of trace liquid pipettor and save box for solve the tip of suction head part short and difficult problem of preserving.

In one embodiment, a suction head of a micro liquid transfer device is provided, which includes a connecting piece and a capillary tube, wherein a connecting cavity is arranged in the connecting piece, one end of the connecting piece is provided with a connecting port, the other end of the connecting piece is provided with a connecting hole, the connecting port and the connecting hole are communicated with the connecting cavity, the connecting port is used for connecting a main body of the micro liquid transfer device, one end of the capillary tube is inserted into the connecting hole, and the other end of the capillary tube extends to the outer side of the connecting piece; the connecting piece is connected the one end of capillary sets up to the joint structure, the joint structure is elastic structure, the joint structure be used for with the suction head is vertical fixed.

In one embodiment, the clamping structure is a conical structure.

In one embodiment, the end face of one end of the connecting piece, which is connected with the capillary tube, is provided with a guide groove, the guide groove extends to be communicated with the connecting hole, and one end of the capillary tube is inserted into the connecting cavity of the connecting piece from the guide groove and the connecting hole in sequence.

In one embodiment, the guide groove is a tapered groove.

In one embodiment, the connecting piece is of a silica gel elastic structure.

In one embodiment, one end of the connecting piece, which is used for connecting the main body of the micro liquid transfer device, is provided with a cylindrical structure.

In one embodiment, a storage box is provided for storing the suction head, and comprises a box body and a fixing part, wherein a storage cavity is formed in the box body, and the fixing part is positioned in the storage cavity; the fixing piece is provided with a plurality of clamping grooves, each clamping groove comprises a clamping cavity positioned at the upper end and an accommodating cavity positioned at the lower end, each clamping cavity is matched with the clamping structure of the connecting piece, each clamping cavity is used for clamping the connecting piece, and each accommodating cavity is used for accommodating the capillary tube extending out of the connecting piece; the accommodating cavity is provided with a preset volume so as to enable the capillary tube to be in a suspended state.

In one embodiment, the clamping cavity comprises a cylindrical cavity and a conical cavity, and the cylindrical cavity, the conical cavity and the accommodating cavity are sequentially communicated.

In one embodiment, the tapered cavity is an elastic cavity, and the elastic cavity fixes the connecting piece through elastic deformation.

In one embodiment, a bottom plate is arranged in the storage cavity of the box body, and the fixing piece is arranged on the bottom plate.

According to the suction head and the storage box of the micro liquid transfer device, the suction head is divided into the connecting piece and the capillary tube, the connecting piece is provided with the clamping structure, the clamping structure is an elastic structure, so that the suction head can be vertically fixed through the elastic clamping structure, and the capillary tube does not need to be in contact fixation, so that the suction head can be used for fixing and storing the longer capillary tube; the fixing part in the storage box is provided with a clamping groove, the clamping groove comprises a clamping cavity and a holding cavity, the clamping cavity is used for clamping and fixing a connecting piece, the holding cavity is used for holding a capillary tube, the capillary tube can be fixed in a hanging mode, the capillary tube is not in contact with the fixing part or the box body, and the capillary tube is protected.

Drawings

FIG. 1 is a schematic view of the structure of a suction head according to an embodiment;

FIG. 2 is a schematic view showing the structure of a storage case according to an embodiment;

FIG. 3 is a transverse cross-sectional view of a fastener according to one embodiment;

FIG. 4 is a transverse cross-sectional view of a storage compartment mounting cup according to one embodiment;

FIG. 5 is a transverse cross-sectional view of a storage compartment mounting cup according to one embodiment;

wherein the reference numbers are as follows:

100-a suction head, 1-a connecting piece, 11-a cylindrical structure, 12-a conical structure, 13-a guide groove and 2-a capillary tube;

200-a storage box, 3-a box body, 4-a fixing piece, 41-a clamping groove, 411-a clamping cavity, 412-an accommodating cavity and 5-a bottom plate.

Detailed Description

The suction head of the prior micro liquid pipettor is of an integrated hard structure, when the suction head is stored, the suction head can only be placed in a flat manner or directly and vertically fixed on the hard structure, the tip of the suction head is easily impacted in the storage mode in the transportation process, and the tip of the suction head is easily bent or broken, so that the front end of the prior suction head cannot be too long.

This application is two parts with the suction head split, and the suction head includes connecting piece and capillary, and the whole or the joint structure that is used for connecting of connecting piece sets up to elastic structure, and the capillary is glass hard material, and the suction head is fixed through elastic joint structure for the suction head can absorb the impact force through elastic structure depositing the in-process, protects the capillary, and consequently this suction head can set up longer capillary, also can carry out safe storage.

Correspondingly, this application still provides a preservation box, a plurality of suction heads of vertical state can be deposited simultaneously to the preservation box, the mounting has in the preservation box, be equipped with a plurality of draw-in grooves on the mounting, every draw-in groove is used for fixed suction head, the draw-in groove divide into two parts, the upper end of draw-in groove is the joint part, the joint part is used for the connecting piece of joint suction head, the lower extreme of draw-in groove is the holding part, the holding part is used for the holding capillary, the suction head passes through the connecting piece and is connected fixedly with the joint part of draw-in groove upper end, the capillary of suction head is in unsettled state at the lower extreme of draw-in groove, the capillary does not contact with other parts, the safety of capillary has been guaranteed.

The present invention will be described in further detail with reference to the accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified. The axial direction herein is along the length of the capillary.

In one embodiment, the suction head of the micro liquid transfer device is provided, the suction head is divided into two parts in the embodiment, the suction head comprises a connecting piece with elasticity and a capillary tube with rigidity, the connecting piece is used for connecting the suction head with the main body of the micro liquid transfer device, the connecting piece is also used for fixing the suction head in a storage box, the capillary tube is used for sucking and discharging liquid, the connecting piece has the shock absorption effect, the capillary tube is protected in the storage process, and the capillary tube is enabled to be stored safely due to the fact that the capillary tube is arranged in a longer mode.

Referring to fig. 1, the suction head 100 of the present embodiment mainly includes a connecting member 1 and a capillary tube 2, the connecting member 1 is an elastic structure, the connecting member 1 can be made of a flexible material such as silica gel, the capillary tube 2 is a rigid structure, and the capillary tube 2 can be made of a hard material such as glass.

Have the connection chamber in connecting piece 1, the one end of connecting piece 1 is equipped with the connector, and the other end of connecting piece 1 is equipped with the connecting hole, and the connector is used for the main part of trace liquid pipettor to connect, connecting hole and capillary 2 sealing connection, and the junction of connecting hole and capillary 2 can also set up seal structure such as sealed glue or sealing washer. One end of the capillary tube 2 passes through the connecting hole and extends into the connecting cavity, the other end of the capillary tube 2 extends to the outer side of the connecting piece 1, and most of the capillary tube 2 is positioned on the outer side of the connecting piece 1, so that the capillary tube 2 can penetrate deep to a deeper position to absorb and discharge liquid. The capillary tube 2 is connected with the main body of the micro liquid transfer device through the connecting cavity of the connecting piece 1 so as to drive the capillary tube 2 to suck liquid and discharge liquid.

Specifically, one end of the connecting piece 1 is a tubular structure 11, a connecting port of the connecting piece 1 is located at an opening of the tubular structure 11, and the connecting port is matched with a main body of the micro liquid transfer device, so that the main body of the micro liquid transfer device can be inserted into the connecting piece 1 to realize connection. The connecting port of the connecting piece 1 can be connected with the main body of the micro liquid transfer device in an elastic deformation mode so as to realize sealing connection. The outside of one end of connecting piece 1 also can be square or other shapes, and the assurance connector and the adaptation of trace liquid pipettor's main part can.

The other end of the connecting piece 1 is a conical structure 12, the axial section of the conical structure 12 is trapezoidal, the larger diameter end of the conical structure 12 is connected with the cylindrical structure 11, and the smaller diameter end of the conical structure 12 is far away from the cylindrical structure 11, i.e. the outer diameter of the conical structure 12 gradually decreases towards the direction far away from the cylindrical structure 11.

The cone-shaped structure 12 is a clamping structure of the connecting piece 1, and the connecting piece 1 is fixed in the storage box through the gradual change structure. The whole elastic construction that is of joint structure of connecting piece 1 is depositing the in-process, can realize fixing through elastic deformation to improve fixed stability, elastic construction can also play the effect of inhaling the shake.

In other embodiments, the clamping structure of the connecting element 1 may be an elastic sleeve sleeved on the conical structure 12, the elastic sleeve is an annular conical structure, and the connecting element 1 can also realize fixation and shock absorption through the elastic sleeve.

In this embodiment, the suction head 100 can be directly operated by the connecting member 1 during the assembling and disassembling process, and the operator does not need to touch the capillary tube 2, thereby avoiding cross contamination. The outer circumference of the cylindrical structure 11 may also be provided with anti-skid threads or the outer circumference of the cylindrical structure 11 is provided with a frosted surface to increase the friction force of the outer circumference of the cylindrical structure 11, which is beneficial for the operation and use of operators.

In this embodiment, a guiding groove 13 is disposed in the middle of an end surface of the conical structure 12 away from the cylindrical structure 11, the guiding groove 13 may be a conical groove, the guiding groove 13 is communicated with the connecting hole, and one end of the capillary tube 2 is inserted into the connecting cavity of the connecting member 1 from the guiding groove 13 and the connecting hole in sequence. The arrangement of the guide groove 13 ensures that one end of the capillary tube 2 can be accurately inserted into the connecting hole of the connecting piece 1 along the guide groove 13, thereby improving the installation efficiency of the capillary tube 2; the guiding grooves 13 can also form a gap in the middle of the end of the conical structure 12, and the gap formed by the guiding grooves 13 provides a space for the conical structure 12 to contract during the fixing and mounting process of the conical structure 12, so that the conical structure 12 can be more easily inserted into the storage box.

In other embodiments, the guiding groove 13 may also be a groove with other structures, for example, the guiding groove 13 is a cross groove, which divides the end of the conical structure 12 into four-petal structures, and the four-petal structures have a certain gap therebetween, which also facilitates the shrink-fit installation of the conical structure 12.

The suction head 100 of this embodiment divide into connecting piece 1 and capillary 2 with suction head 100, and connecting piece 1 is equipped with the joint structure, and the joint structure is elastic construction for the suction head can carry out vertical fixed through having elastic joint structure, and capillary 2 need not to carry out the contact and fixes, and consequently this suction head 100 can fix the save longer capillary 2.

In one embodiment, a storage box is provided, which is mainly used for storing the suction heads 100 in the above embodiments, and the storage box 200 is provided with a slot structure adapted to the suction head 100 in the above embodiments, so as to stably store the suction head 100.

Have the connection chamber in the connecting piece 1, the one end of connecting piece 1 is equipped with the connector, and the other end of connecting piece 1 is equipped with the connecting hole, and the connector is used for the main part of trace liquid pipettor to connect, connecting hole and 2 sealing connection of capillary, and the junction of connecting hole and capillary 2 can also set up seal structure such as sealed glue or sealing washer. One end of the capillary tube 2 passes through the connecting hole and extends into the connecting cavity, the other end of the capillary tube 2 extends to the outer side of the connecting piece 1, and most of the capillary tube 2 is positioned on the outer side of the connecting piece 1, so that the capillary tube 2 can penetrate deep to a deeper position to absorb and discharge liquid. The capillary tube 2 is connected with the main body of the micro liquid transfer device through the connecting cavity of the connecting piece 1 so as to drive the capillary tube 2 to suck liquid and discharge liquid.

The cone-shaped structure 12 is a clamping structure of the connecting piece 1, and the connecting piece 1 is fixed in the storage box through the gradual change structure. The whole elastic construction that is of joint structure of connecting piece 1 deposits the in-process, can realize fixing through elastic deformation to improve fixed stability, elastic construction can also play the effect of inhaling the shake.

In this embodiment, a guiding groove 13 is disposed in the middle of an end surface of the conical structure 12 away from the cylindrical structure 11, the guiding groove 13 may be a conical groove, the guiding groove 13 is communicated with the connecting hole, and one end of the capillary tube 2 is inserted into the connecting cavity of the connecting member 1 from the guiding groove 13 and the connecting hole in sequence. The arrangement of the guide groove 13 ensures that one end of the capillary tube 2 can be accurately inserted into the connecting hole of the connecting piece 1 along the guide groove 13, thereby improving the installation efficiency of the capillary tube 2; the guiding grooves 13 can also form a gap in the middle of the end of the conical structure 12, and the gap formed by the guiding grooves 13 provides a space for the conical structure 12 to shrink during the fixed installation process of the conical structure 12, so that the conical structure 12 can be more easily inserted into the storage box.

Referring to fig. 2 to 4, the storage box 200 of the present embodiment mainly includes a box body 3 and a fixing member 4, a storage cavity is disposed in the box body 3, the box body 3 may be provided with a box cover, the box cover may be separated from the box body 3, the box cover may also be connected to the box body 3 through a rotating shaft, and the box cover seals the storage cavity.

Mounting 4 sets up the intracavity of depositing at box body 3, and the chamber adaptation of depositing of the volume of mounting 4 and box body 3 supports all around on the wall of box body 3 for 4 stable fixes of mounting in box body 3, can avoid rocking in the transportation. If the storage cavity in the box body 3 is a square cavity, the fixing part 4 is a square block, and the length of the square block is consistent with the length of the square cavity.

The fixing part 4 can be made of materials such as silica gel or sponge, the fixing part 4 has certain elasticity, and the fixing part 4 can be fixed in the box body 3 through the elasticity. The fixing member 4 can also be fixed with the box body 3 through a clamping structure.

The fixing member 4 is provided with a plurality of slots 41, the plurality of slots 41 may be distributed in an array at equal intervals, for example, 8 slots 41 are distributed in a 2 × 4 manner. One clamping groove 41 is used for storing and fixing one suction head 100, 8 clamping grooves 41 can be used for storing 8 suction heads 100 at the same time, and the number of the clamping grooves 41 can be set according to requirements so as to store the required number of suction heads 100.

The clamping groove 41 is divided into two parts, the upper end of the clamping groove 41 is a clamping cavity 411, and the lower end of the clamping groove 41 is an accommodating cavity 412. The clamping cavity 411 is matched with the connecting piece 1, the clamping cavity 411 comprises a cylindrical cavity and a conical cavity, the cylindrical cavity is located at the upper end, the conical cavity is located at the lower end, and the cylindrical cavity, the conical cavity and the accommodating cavity 412 are sequentially communicated from top to bottom. The conical cavity at the lower end of the clamping cavity 411 is slightly smaller than the conical structure 12 of the connecting piece 1, and the fixing piece 4 is of an elastic structure and is an elastic cavity, so that after the connecting piece 1 is inserted into the clamping cavity 411, the conical structure 12 of the connecting piece 1 and the conical cavity of the clamping cavity 411 are in fastening connection through elastic deformation. The receiving chamber 412 may be configured as a generally cylindrical chamber, and the receiving chamber 412 is configured to receive the capillary tube 2 extending out of the connector 1. The upper end of the tubular structure 11 of the connector 1 may protrude out of the locking groove 41, and the tubular structure 11 may be flush with the locking groove 41 or hidden in the locking groove 41. The tubular structure 11 of the connector 1 has a connection cavity, so that the tip 100 can be easily taken out from the slot 41, and the connector 1 can be directly connected with the main body of the micropipette in the slot 41, and then the tip 100 can be taken out.

The accommodating cavity 412 has a preset volume, that is, the accommodating cavity 412 has sufficient aperture and sufficient depth, so that the outer circumference of the capillary tube 2 does not collide with the side wall of the accommodating cavity 412, the end part of the capillary tube 2 does not touch the bottom of the accommodating cavity 412, the capillary tube 2 is in a suspended state, and further the capillary tube 2 does not collide with other parts in the storage process, thereby avoiding the bending and breaking of the capillary tube 2. The accommodating cavity 412 has enough volume and can also provide a redundant space for the capillary 2, when the suction head 100 is fixed on the fixing part 4 or taken out from the fixing part 4, the capillary 2 can be inclined and swung, the redundant space can avoid the collision between the capillary 2 and the side wall of the accommodating cavity 412 in the inclined and swinging process, and the capillary 2 is protected in the dismounting and mounting process.

In other embodiments, the fixing member 4 may also be a rigid structure, and an elastic clamping structure is disposed in the receiving cavity 412, for example, a conical ring sleeve is disposed in the receiving cavity 412, and the conical ring sleeve can fix the connecting member 1 through elastic deformation, and can also fix the suction head 100, and has a shock absorption protection effect on the capillary tube 2.

In this embodiment, the clamping groove 41 on the fixing member 4 extends from the upper surface to the lower surface of the fixing member 4, and the clamping groove 41 penetrates through the fixing member 4 along the vertical direction, which is favorable for processing and forming the clamping groove 41.

In other embodiments, the clamping groove 41 may also extend from the upper surface of the fixing element 4 to the inside of the fixing element 4, the clamping groove 41 is a blind hole structure, the clamping groove 41 does not penetrate through the fixing element 4, the bottom of the accommodating cavity 412 is blocked by the fixing element 4, and in an unexpected situation, the end of the capillary tube 2 does not collide with the bottom of the box body 3, so that the capillary tube 2 can be further protected.

Referring to fig. 5, in other embodiments, the bottom plate 5 is the bottom of the storage cavity of the box body 3, the fixing member 4 is disposed on the bottom plate 5, and the bottom plate 5 blocks all the slots 41, so that the lower ends of the slots 41 form a closed structure, and in an unexpected situation, the end of the capillary 2 does not collide with the bottom of the box body 3, and the bottom plate 5 can also further protect the capillary 2. Wherein, the bottom plate 5 can be made of materials such as silica gel or foam, and the bottom plate 5 has certain elasticity and has better protection effect on the capillary tube 2.

In this embodiment, the fixing member 4 in the storage box 200 is provided with a clamping groove 41, the clamping groove 41 includes a clamping cavity 411 and an accommodating cavity 412, the clamping cavity 411 is used for clamping the fixed connecting member 1, the accommodating cavity 412 is used for accommodating the capillary tube 2, the capillary tube 2 can be suspended and fixed, the capillary tube 2 is not in contact with the fixing member 4 or the box body 3, and the capillary tube is protected.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims

1. The suction head of the micro liquid transfer machine is characterized by comprising a connecting piece and a capillary tube, wherein a connecting cavity is arranged in the connecting piece, one end of the connecting piece is provided with a connecting port, the other end of the connecting piece is provided with a connecting hole, the connecting port and the connecting hole are communicated with the connecting cavity, the connecting port is used for connecting a main body of the micro liquid transfer machine, one end of the capillary tube is inserted into the connecting hole, and the other end of the capillary tube extends to the outer side of the connecting piece; the connecting piece is connected the one end of capillary sets up to the joint structure, the joint structure is elastic structure, the joint structure be used for with the suction head is vertical fixed.

2. The pipette tip of claim 1 wherein the snap fit structure is a conical structure.

3. The pipette tip according to claim 1, wherein a guide groove is provided in an end surface of the connecting member, which is connected to the capillary tube, the guide groove extending to communicate with the connection hole, and one end of the capillary tube is inserted into the connection cavity of the connecting member from the guide groove and the connection hole in this order.

4. The pipette tip of claim 3 wherein the guide slot is a tapered slot.

5. The pipette tip of claim 1 wherein the connector is a silicone elastomer structure.

6. The pipette tip of claim 1 wherein the end of the connector for connecting to the body of the pipette is configured as a barrel.

7. A storage box for storing the suction head according to any one of the claims 1 to 5, wherein the storage box comprises a box body and a fixing part, a storage cavity is arranged in the box body, and the fixing part is positioned in the storage cavity; the fixing piece is provided with a plurality of clamping grooves, each clamping groove comprises a clamping cavity at the upper end and an accommodating cavity at the lower end, the clamping cavities are matched with the clamping structure of the connecting piece, the clamping cavities are used for clamping the connecting piece, and the accommodating cavities are used for accommodating the capillary tubes extending out of the connecting piece; the accommodating cavity is provided with a preset volume so as to enable the capillary tube to be in a suspended state.

8. The storage case of claim 7, wherein the clamping cavity comprises a cylindrical cavity and a conical cavity, and the cylindrical cavity and the conical cavity are sequentially communicated with the accommodating cavity.

9. The preservation box according to claim 8, wherein said tapered chamber is an elastic chamber, and said elastic chamber fixes said connecting member by elastic deformation.

10. The preservation box according to claim 7, wherein a bottom plate is provided in the storage compartment of the box body, and the fixing member is disposed on the bottom plate.