CN209039477U - A kind of test cell pen - Google Patents

Abstract

The utility model discloses a kind of test cell pen, comprising: containing tube, syringe needle, demarcation plate, spring, multistage air cavity column, sealing-plug, stud and elastic membrane, the containing tube include the first connecting tube and the second connecting tube；Recess is formed with multiple round pressing grooves on the outer peripheral surface of the multistage air cavity column；Recess is formed with an air slot on the outer peripheral surface of the multistage air cavity column, and the air slot is along the busbar arrangement of the multistage air cavity column, and the air slot is sequentially communicated multiple pressing grooves, and the lower end of the air slot is through the lower end surface of the multistage air cavity column；A pressing hole, the arrangement of pressing groove described in the pressing hole face one are offered on the tube wall of first connecting tube, the diameter of the pressing hole is greater than or equal to the diameter of the maximum pressing groove；The elastic membrane is sealed in the pressing hole；User can draw the cell on microscope carrier by pressing the elastic membrane, avoid unsafe problems caused by using mouth suction pipe.

Description

A kind of test cell pen

Technical field

The utility model relates to a kind of Bioexperiment equipment, and in particular to a kind of test cell pen.

Background technique

At present use for laboratory in picking is unicellular or the method for monoclonal the most commonly used is mouth suction pipes, but be easy when in use Occur more choosing or leaking the case where choosing, and mouth suction pipe is put into mouth and is absolutely unsafe, and is easy to bring the harm on body to laboratory technician.

Utility model content

The purpose of the utility model is to overcome above-mentioned technical deficiencies, provide a kind of test cell pen, solve existing skill Mouth suction pipe is put into unsafe technical problem in mouth in art.

To reach above-mentioned technical purpose, the technical solution of the utility model provides a kind of test cell pen, comprising: accommodating Pipe, syringe needle, demarcation plate, spring, multistage air cavity column, sealing-plug, stud and elastic membrane, the containing tube include the first connecting tube and Second connecting tube, second connecting tube are infundibulate, the lower end of the big end of second connecting tube and first connecting tube It is fixedly connected, and communicates therewith, the small end of second connecting tube is fixedly connected with the upper end of the syringe needle, and is communicated therewith； The demarcation plate is built in first connecting tube, and the inner cavity of first connecting tube is separated into upper cavity arranged up and down And lower chamber, the intercommunicating pore for being connected to the upper cavity, the lower chamber is provided on the demarcation plate；The lower chamber directly with The inner cavity of the funnel is connected to；The spring, multistage air cavity column and sealing-plug are coaxially built in the upper cavity, and by down toward On be sequentially arranged, the upper surface of the lower end of the spring and the demarcation plate abuts against, the upper end of the spring and the multistage The lower end of air cavity column abuts against；The multistage air cavity column is slidably connected with first connecting tube, and its glide direction is vertical Direction；Recess is formed with multiple round pressing grooves on the outer peripheral surface of the multistage air cavity column, and multiple pressing grooves are arranged in institute On the same bus for stating multistage air cavity column, and the diameter of multiple pressing grooves is different；The outer peripheral surface of the multistage air cavity column Upper recess is formed with an air slot, and along the busbar arrangement of the multistage air cavity column, the air slot is sequentially communicated the air slot Multiple pressing grooves, and the lower end of the air slot is through the lower end surface of the multistage air cavity column；The sealing-plug is fixed In the upper end of the multistage air cavity column, the outer peripheral surface of the sealing-plug is closely connected to the inner peripheral surface of first connecting tube, institute It states sealing-plug to be slidably connected with first connecting tube, and its glide direction is vertical direction；The lower end of the stud is coaxially interior It is placed in the upper end of first connecting tube, the lower end surface of the stud is connected to the upper surface of the sealing-plug, the stud It is provided with external screw thread on outer peripheral surface, is provided with the internal screw thread being matched therewith on the inner peripheral surface of first connecting tube；Described Offer a pressing hole on the tube wall of one connecting tube, the arrangement of pressing groove described in the pressing hole face one, the pressing hole it is straight Diameter is greater than or equal to the diameter of the maximum pressing groove；The elastic membrane is sealed in the pressing hole.

Compared with prior art, the beneficial effects of the utility model include: the test cell pen in use, use Family can draw the cell on microscope carrier by pressing the elastic membrane, avoid dangerous caused by using mouth suction pipe Problem；The rotatable stud of user, so that multistage air cavity column the sliding axially along first connecting tube, passes through adjusting The position of the multistage air cavity column may make the pressing groove of the pressing hole face different-diameter, when the elastic membrane is pressed in It can produce different capacities when the pressing groove of different-diameter, to meet the requirement of different cell soakages.

Detailed description of the invention

Fig. 1 is the schematic perspective view of the utility model.

Fig. 2 is that the schematic perspective view after elastic membrane is removed in Fig. 1.

Fig. 3 is that the schematic perspective view after containing tube, syringe needle, demarcation plate and elastic membrane is removed in Fig. 1.

Fig. 4 is the schematic perspective view removed after spring, multistage air cavity column, sealing-plug, stud and elastic membrane in Fig. 1.

Fig. 5 is the side cross sectional views of Fig. 4.

Fig. 6 is the schematic top plan view of Fig. 1.

Fig. 7 is the face A-A schematic cross-sectional view in Fig. 6.

Fig. 8 is the partial enlargement diagram in Fig. 7 at B.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Please refer to Fig. 1~8, the present embodiment provides a kind of test cell pens, comprising: containing tube 1, syringe needle 2, demarcation plate 3, Spring 4, multistage air cavity column 5, sealing-plug 6, stud 7 and elastic membrane 8.

The containing tube 1 includes the first connecting tube 11 and the second connecting tube 12, and second connecting tube 12 is infundibulate, institute The big end for stating the second connecting tube 12 is fixedly connected with the lower end of first connecting tube 11, and is communicated therewith, second connection The small end of pipe 12 is fixedly connected with the upper end of the syringe needle 2, and is communicated therewith；The demarcation plate 3 is built in first connection Pipe 11, the demarcation plate 3 are fixedly connected with the inner wall of first connecting tube 11, and the inner cavity of first connecting tube 11 point It is divided into upper cavity and lower chamber arranged up and down, the company for being connected to the upper cavity, the lower chamber is provided on the demarcation plate 3 Through-hole 3a；The lower chamber is directly connected to the inner cavity；The spring 4, multistage air cavity column 5 and sealing-plug 6 are coaxial interior It is placed in the upper cavity, and is sequentially arranged from the bottom to top, the upper surface of the lower end of the spring 4 and the demarcation plate 3 abuts against, The upper end of the spring 4 and the lower end of the multistage air cavity column 5 abut against；The multistage air cavity column 5 and first connecting tube 11 are slidably connected, and its glide direction is vertical direction；Recess is formed with multiple circles on the outer peripheral surface of the multistage air cavity column 5 Pressing groove 5a, multiple pressing groove 5a are arranged on the same bus of the multistage air cavity column 5, and multiple pressing grooves The diameter of 5a is different；Recess is formed with an air slot 5b on the outer peripheral surface of the multistage air cavity column 5, and the air slot 5b is along described The busbar arrangement of multistage air cavity column 5, the air slot 5b are sequentially communicated multiple pressing groove 5a, and the air slot 5b Lower end is through the lower end surface of the multistage air cavity column 5；The sealing-plug 6 is fixed on the upper end of the multistage air cavity column 5, described close The outer peripheral surface of blocking 6 closely abuts and the inner peripheral surface of first connecting tube 11, the sealing-plug 6 and first connecting tube 11 It is slidably connected, and its glide direction is vertical direction；The lower end of the stud 7 is coaxially built in the upper of first connecting tube 11 End, the lower end surface of the stud 7 is connected to the upper surface of the sealing-plug 6, is provided with outer spiral shell on the outer peripheral surface of the stud 7 Line is provided with the internal screw thread being matched therewith on the inner peripheral surface of first connecting tube 11；The tube wall of first connecting tube 11 On offer a pressing hole 11a, the arrangement of pressing groove 5a described in the pressing hole 11a face one, the diameter of the pressing hole 11a is big In or equal to the maximum pressing groove 5a diameter；The elastic membrane 8 is sealed in the pressing hole 11a；The test cell In use, user can draw the cell on microscope carrier by pressing the elastic membrane 8 to pen, avoid use Unsafe problems caused by mouth suction pipe；The rotatable stud 7 of user, so that the multistage air cavity column 5 is along first connection Pipe 11 slides axially, and the position by adjusting the multistage air cavity column 5 may make the pressing hole 11a face different-diameter Pressing groove 5a can produce different capacities when the elastic membrane 8 is pressed in the pressing groove 5a of different-diameter, to meet The requirement of different cell soakages.

Specifically, first connecting tube 11 is round tube, it is provided on the inner wall of first connecting tube 11 along its mother The guide groove 11b of line arrangement；It is convexly equipped with gib block 5c on the outer peripheral surface of the multistage air cavity column 5, the gib block 5c is built in The guide groove 11b, and slided along the arranged direction of the guide groove 11b, the multistage air cavity column 5 is avoided along described first Connecting tube 11 circumferentially rotates.

Preferably, the upper end of the stud 7 is fixed with multiple convex block 7a, and multiple convex block 7a are along the stud 7 It is circumferentially radial to be evenly arranged, consequently facilitating user rotates the stud 7, avoid skidding.

Preferably, there are two be clamped ring 11c, two clamping rings for setting on the outer peripheral surface of first connecting tube 11 11c is coaxially arranged with first connecting tube 11, and the pressing hole 11a is arranged between two clamping ring 11c； The elastic membrane 8 is a tubular rubber film, and 8 coaxial sleeve of elastic membrane is set to the outer peripheral surface of first connecting tube 11, and close It is encapsulated in the pressing hole 11a, and the elastic membrane 8 is set between two clamping ring 11c；The pressing hole 11a's Edge is provided with chamfering, and the open end of multiple pressing groove 5a is also equipped with chamfering, thus when avoiding pressing the elastic membrane 8 It is caused to hurt.

Preferably, the syringe needle 2 is glass material, and the lower end surface of the syringe needle 2 is 45 degree of inclined-planes, can effectively with liquid level phase In parallel, the probability chosen is chosen or leaked for reducing more, damage the syringe needle 2 because dynamics control is improper when being also possible to prevent knit stitch.

Working principle: for user during using test cell pen, a hand controls microscope carrier, finds The unicellular of picking is needed, another hand wields cell pen, and thumb is placed at pressing hole, slowly close to field of microscope, adjustment Knit stitch angle, elastic membrane 8 is stated in thumb flicking residence, when by the lower end of syringe needle 2 close to aim cell, finely tunes thumb dynamics, purpose Cell enters in the syringe needle 2, is put into culture in new culture dish, and operation is completed, and will be put into storage box after the cleaning of cell pen It is interior, for use next time；When needing to suck multiple cells, the rotatable stud 7 of user, so that the multistage air cavity column 5 Along sliding axially for first connecting tube 11, the position by adjusting the multistage air cavity column 5 may make the pressing hole 11a The pressing groove 5a of face different-diameter can produce different when the elastic membrane 8 is pressed in the pressing groove 5a of different-diameter Capacity, to meet the requirement of different cell soakages.

Specific embodiment of the present utility model described above does not constitute the restriction to scope of protection of the utility model. Any other various changes and modifications that any technical concept according to the present utility model is made should be included in practical In novel scope of protection of the claims.

Claims (5)

1. a kind of test cell pen, comprising: containing tube, syringe needle, demarcation plate, spring, multistage air cavity column, sealing-plug, stud and Elastic membrane, the containing tube include the first connecting tube and the second connecting tube, and second connecting tube is infundibulate, and described second connects The big end of adapter tube is fixedly connected with the lower end of first connecting tube, and is communicated therewith, the small end of second connecting tube and institute The upper end for stating syringe needle is fixedly connected, and is communicated therewith；The demarcation plate is built in first connecting tube, and connects described first The inner cavity of adapter tube is separated into upper cavity and lower chamber arranged up and down, and the connection upper cavity, institute are provided on the demarcation plate State the intercommunicating pore of lower chamber；The lower chamber is directly connected to the inner cavity of the funnel；The spring, multistage air cavity column and sealing Plug is coaxially built in the upper cavity, and is sequentially arranged from the bottom to top, the upper table of the lower end of the spring and the demarcation plate Face abuts against, the upper end of the spring and the lower end of the multistage air cavity column abut against；The multistage air cavity column and described first Connecting tube is slidably connected, and its glide direction is vertical direction；Recess is formed with multiple on the outer peripheral surface of the multistage air cavity column Round pressing groove, multiple pressing grooves are arranged on the same bus of the multistage air cavity column, and multiple pressing grooves Diameter it is different；Recess is formed with an air slot on the outer peripheral surface of the multistage air cavity column, and the air slot is along the multistage gas The busbar arrangement of chamber column, the air slot is sequentially communicated multiple pressing grooves, and the lower end of the air slot is through described The lower end surface of multistage air cavity column；The sealing-plug is fixed on the upper end of the multistage air cavity column, and the outer peripheral surface of the sealing-plug is tight The close inner peripheral surface for being connected to first connecting tube, the sealing-plug is slidably connected with first connecting tube, and its sliding side To for vertical direction；The lower end of the stud is coaxially built in the upper end of first connecting tube, and the lower end surface of the stud is supported It is connected to the upper surface of the sealing-plug, external screw thread, the inner peripheral surface of first connecting tube are provided on the outer peripheral surface of the stud On be provided with the internal screw thread being matched therewith；A pressing hole is offered on the tube wall of first connecting tube, the pressing hole is just To a pressing groove arrangement, the diameter of the pressing hole is greater than or equal to the diameter of the maximum pressing groove；The elasticity Film is sealed in the pressing hole.

2. test cell pen according to claim 1, which is characterized in that be provided on the inner wall of first connecting tube Along the guide groove of its busbar arrangement；It is convexly equipped with gib block on the outer peripheral surface of the multistage air cavity column, the gib block is built in institute Guide groove is stated, and is slided along the arranged direction of the guide groove.

3. test cell pen according to claim 1, which is characterized in that the upper end of the stud is fixed with multiple convex Block, multiple convex blocks radial are evenly arranged along the circumferential direction of the stud.

4. test cell pen according to claim 1, which is characterized in that the edge of the pressing hole is provided with chamfering； The open end of multiple pressing grooves is also equipped with chamfering.

5. test cell pen according to claim 1, which is characterized in that the lower end surface of the syringe needle is 45 degree of inclined-planes.