WO2015081798A1 - Rotary auxiliary liquid aspirator - Google Patents

Rotary auxiliary liquid aspirator Download PDF

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Publication number
WO2015081798A1
WO2015081798A1 PCT/CN2014/092222 CN2014092222W WO2015081798A1 WO 2015081798 A1 WO2015081798 A1 WO 2015081798A1 CN 2014092222 W CN2014092222 W CN 2014092222W WO 2015081798 A1 WO2015081798 A1 WO 2015081798A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipette
rotary joint
rotary
sleeve
piston
Prior art date
Application number
PCT/CN2014/092222
Other languages
French (fr)
Chinese (zh)
Inventor
罗耿荣
Original Assignee
罗耿荣
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
Priority to CN201310652564.9 priority Critical
Priority to CN201310652564.9A priority patent/CN103638998B/en
Application filed by 罗耿荣 filed Critical 罗耿荣
Publication of WO2015081798A1 publication Critical patent/WO2015081798A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/021Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0213Accessories for glass pipettes; Gun-type pipettes, e.g. safety devices, pumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/08Ergonomic or safety aspects of handling devices
    • B01L2200/087Ergonomic aspects

Abstract

A rotary auxiliary liquid aspirator comprises a liquid aspirator body and a sucking tube connector (1) for mounting a sucking and measuring tube (9). The liquid aspirator body comprises a shell (2) and a pump (3) disposed in the shell (2). The sucking tube connector (1) is rotationally connected to the shell (2) by using a rotating joint device (4). The sucking tube connector (1) is in communication with the pump (3) by using the rotating joint device (4).

Description

Rotary auxiliary Sipper FIELD:

The present invention relates to laboratory technology aids, and in particular relates to a rotary auxiliary pipette.

Background technique:

In the medical, pharmaceutical, genetic and protein research, biological research, drug development laboratories, and other biotechnology applications, often require the use of a quantitative pipette pipetting the liquid, require auxiliary pipette when pipetting liquid aspirated. Conventional auxiliary liquid-absorbent comprises a liquid-absorbent body 1 ', connected to the absorbent body 1' on the straw adapter 2 'is connected to the suction connection piece 2' on the pipette 3 ', the absorbent body 1' is a gun-shaped configuration, the absorbent body 1 'is provided with a handle at one end 11', the suction connection piece 2 'is provided in the liquid absorbent body 1' the other end of the handle 11 'with the pipette 3' away from each other, integers a length of 15cm, a height of 43cm, width is 5cm, such as the volume occupied 3225cm 3, relatively large size, space and storage space intensive operation, coupled with the pipette 3 'is fixed to the handle 11' on the suction amount pipe 3 'can not be relative to the handle 11' is rotated to adjust the angle, where the experiment, the experimental requirements, operating angle, height of the user and other factors will directly affect changes in the operating state, the operation is not convenient in case of a small space like a biological safety cabinet, and since the handle and pipette away from each other, and indirectly driven by the handle via pipette body pipette movement, the operating motion and the position is not easily controlled, the operation is not smooth and non-smooth, easy to shaking occurs operation failures in, and pipetting hand expand the elbow amplitude, capacity Fatigue; Further, the conventional need for auxiliary vertical pipette when using a liquid, pipetting according to the mark, discharge, dispense, affect the accuracy of the inclination absorbent liquid discharge, inconvenient to use, low precision.

SUMMARY:

The present invention is for the disadvantages of the prior art and to provide a reduced volume of the space and operate, easy to operate, highly accurate rotary auxiliary pipette.

To achieve the above object, the technical solution adopted by the invention is:

Rotary auxiliary pipette, which pipette comprises a body, a suction connection piece mounted pipette, the pipette body comprises a housing, a pump disposed within the housing, the suction connection piece is rotatably connected by a rotary joint device on the housing in communication with the pump intake connection through the rotary joint device.

A first rotary joint device comprises a rotary joint may be rotated in a vertical plane, the upper end of the first swivel axis of the hollow tube is closed and is provided in communication with the interior of the first rotary joint in the lateral projection, the lower end of the first swivel joint defines mounted connection port and the suction connection piece, a first rotary joint rotatably connected to the body through the hollow pipette tube axis, a hollow tube in communication with the pump shaft.

A first hollow tube shaft via a second swivel joint to rotate along a horizontal plane of rotation is rotatably connected to the pipette body, the hollow tube shaft rotatably connected to the second rotary joint, second rotary joint body rotatably connected to the pipette on the inside of the second rotary joint defines a liquid-absorbent passage, the absorbent passage ends in communication with the pump, the hollow tube axis, respectively.

Top of the second sleeve is provided with swivel joints connecting base, and defines a shaft hole of the front end of the liquid suction passage communicating the top face of a second rotary joint, the distal end of the hollow shaft passes through the header pipe and the seat is rotatably connected to the shaft hole , the circumferential surface of the hollow tube outwardly projecting shaft is provided with a stepped circular, circular stepped connector holder rotatably disposed in the joint, the sealing O-ring connected by a first circular stepped between the rear end surface of the second rotary joint, the front end cap is provided with linker base plate, the cover plate sleeved on the tube axis is located in the hollow circular stepped forward position, the seat cover is fixed by a screw connection locking the joint, is pressed against the rear end surface of the circular plate the front end surface of the stepped shape.

Two cover plate, the cover plate on both sides of two hollow tube shaft, two shaft cover side facing the hollow tube defines a semicircular holes are fitted with a hollow tube shaft, two semicircular cover a circular hole through which the hollow shaft passes through the tube-shaped holes are formed in combination.

Pump includes a piston housing connected within the sleeve, the piston sleeve slidably connected to the piston, piston rod, the linear motor is located below the piston sleeve, the upper end of a piston rod connected to the bottom of the piston, the straight line connecting the lower end of the piston rod the output of the motor, the bottom of the second rotating joint is rotatably connected to the top of the piston sleeve, the liquid suction passage communicating the piston sleeve.

A second rotary joint bottom is provided with downwardly protruding boss, the boss rotatably disposed within the top of the piston sleeve, the boss are connected by a third circumferential outer sealing O-ring between the surface and the inner surface of the sleeve of the piston, boss It defines a tapered bottom groove, the top of the lower end of pipetting channels communicating with the tapered groove.

Body further comprises a fixed base disposed at the bottom of the piston sleeve, the piston sleeve is sleeved outside the fixed sleeve is fixed to the holder housing, a piston rod slidable vertically bored in the holder, the fixed sleeve the bottom of the threaded cylinder is connected to the holder, the top of the molded sleeve is fixed to the pressing portion extending above the piston sleeve, a second rotary joint forming a bottom peripheral edge with a flange, the flange is pressed against the bottom of piston sleeve on top of the periphery, the bottom of the pressing portion is pressed against the top flange.

Holder cylinder provided with a convex top, cylindrical circumferential outer surface provided with an external thread, the bottom of the piston in the cylinder sleeve is interposed, is connected to the bottom of the threaded sleeve is fixed to the cylinder.

The upper housing is provided with a display screen, control buttons, the housing equipped with a control circuit board, a display screen, control buttons, each pump is electrically connected to the control circuit board.

Advantageous effects of the present invention wherein: The present invention comprises a pipette body, pipette connector for mounting pipette, the pipette body comprises a housing, a pump disposed within the housing, the suction connection piece is rotatably connected by a rotary joint device on the housing, the suction connection piece communicates with the pump means through the rotary joint, the present invention is free to rotate by the rotation of the suction pipe joint means that the joint pipette pipette body is formed with an inverted V-shaped structure, to maximize the pipette so that the center of gravity close to the user's wrist, elbow reduce pipetting amplitude expand greatly reduce fatigue, the pipette can rotate freely adjust the angle of the full range, for different experimental situations, different requirements, different operating angles, different users can adjust the height to the most suitable operating state, the operating motion and position control is accurate, easy to operate and more convenient, smooth, smooth, flexible, without shaking, reduce operational errors phenomenon with high precision, and can greatly reduce the overall height of the pipette and the auxiliary volume, small footprint operating space and storage space, easy to operate applications in biological safety cabinets and other small spaces.

BRIEF DESCRIPTION OF:

FIG 1 is a schematic view of a conventional auxiliary liquid-absorbent filter.

FIG 2 is a schematic view of the present invention.

3 is a sectional view of the invention.

FIG 4 is an exploded view of the present invention.

FIG 5 is a schematic diagram of the first rotary joint of the present invention.

FIG 6 is a schematic view of the fixed sleeve of the present invention.

FIG 7 is a state diagram of the present invention is used.

detailed description:

DRAWINGS The present invention will be further described, as shown in Figure 2 to 7, the rotary auxiliary pipette, which comprises a pipette body, pipette 9 for mounting the connector 1 of the pipette, pipette body comprises a housing 2, disposed in the housing 2 of the body 3, the suction connection piece 14 rotatably connected by a rotary joint device on the housing 2, a suction connection piece communicates with the pump unit 3 through the rotary joint 4.

Rotary joint device 4 comprises a rotatable along a vertical plane of a first rotary joint 41, the upper end of the first rotating joint 41 is provided with a closed and hollow tube communicating with the interior of the first axis rotary joint 41 411 transversely convex, a first rotary lower joint 41 defines a connection port 412 and the suction connection piece 1 is mounted, a first rotary joint 41 rotatably connected to the pipette main body 411 through the hollow pipe shaft, the hollow tube 3 communicates with the pump shaft 411. By a first swivel joint 41 so that the suction pipe 411 can be rotated in a vertical plane 360 ​​° about the axis of the hollow tube, so that pipette pipette body 9 is formed with an inverted V-shaped structure, to the center of gravity to maximize the pipette tube close to the user's wrist, elbow reduce the amplitude pipetting expand greatly reduce fatigue. 9 pipette can be rotated to coincide with the pipette body position, it is possible to reduce the overall volume of the auxiliary liquid-absorbent, easy operation and a small storage space occasions.

The first connection port 41 of the rotary joint 412 protruding for insertion mouth pipette nine hollow column 413, column 413 of the hollow tube communicating with the hollow shaft 411, the pipette 9 is mounted on the suction pipe fitting 1, hollow column connector 413 is formed in the mouth of the pipette 9 sealing structure, good sealing effect, the hollow column 413 of the hollow tube with the pipette shaft 411 communicating passage 9 is formed.

The inner surface of the first rotary joint 412 is connected to port 41 defines internal threads 414, the suction connection piece 1 is screwed to the connection port 41 of the first rotary joint 412, easy assembly and disassembly, firmly connected.

A first rotary joint 411 of the hollow tube 42 rotates shaft 41 through a second rotatable along a horizontal rotary joint 42 rotatably connected to the pipette body, the hollow tube 411 is rotated in the second rotational shaft connected to joint 42, a second rotary joint is connected to the pipette body, a second rotary joint 42 defines an internal liquid suction passage 421, passage 421 at both ends of the absorbent body 3, respectively, the hollow tube may be formed following the shaft 411 communicates a first rotary joint 41, the second the rotary joint 42 rotating liquid passage, a first rotating joint 41 and the second rotating joint 42 can be any rotating body 3 to ensure communication with the liquid passage and the pipette 9, the rotary joint device 4 to achieve both a rotation function and achieve liquid transport function, structure is simple, easy to use. A first rotary joint 41 can rotate 360 ​​degrees in a vertical plane, the second swivel joint 42 can be rotated 360 degrees in the horizontal plane, by a first swivel joint 41 and second joint 42 is rotated compositions, such pipette 9 can be achieved full freely adjust the angle of rotation can be applied to different experimental situations, different requirements, different operating positions and angles, and other users of different heights, the freedom and flexibility to use a wide range.

A second rotary joint 42 is provided with a front end of the top sleeve linker seat 43, defines the top of the front face 42 of the second rotary joint with a shaft hole 421 communicating the suction passage 422 and the fluid, the hollow shaft 411 passes through the header pipe 43 of the seat and rotatably connected to the shaft hole 422, the circumference of the hollow tube shaft 411 is provided with outwardly projecting circular stepped surface 415, a circular step 415 rotatably disposed in the joint connector 43, circular stepped rear end surface of the second rotating base 415 connected by a joint 42 between a first O-ring seal 44, the joint 43 connects the front seat is provided with a cover plate 45, cover 45 sleeved onto the hollow shaft 411 at a position in front of the circular step 415, the cover plate by a locking screw 45 is fixed on the header housing 43, rear end plate 45 is pressed against the front end surface of the circular step 415, 415 by a circular step 45 the second swivel joint 42 to the pressure plate, so that a first O-ring 44 is clamped between the rear end surface of the circular step 415 and the front end face of the second rotary joint forms a dynamic seal 42 at the top, regardless of how the hollow tube shaft 411 can be rotated to ensure that the hollow shaft 411 and the second tube two swivel joint 42 between the liquid does not leak, good sealing effect Simple structure, easy assembly and disassembly, replacement of a first O-ring 44 easily.

A second rotary joint 42 defines the top of the front end face of the first annular groove 422 around the outside circumference of the shaft hole 423, a first O-ring 44 disposed in a first annular groove 423, the rear end face 415 of the circular step pressed against the first O-ring 44 to improve the sealing effect.

45 cover two sides of the hollow shaft 411 of the tube, two side plate 45 toward the cover plate 45 two hollow tube shaft 411 are 451 defines a semi-circular shaft hole 411 and the hollow tube fitting, two semicircular holes 451 of the cover plate 45 for a combination of a circular hole 411 is formed through the hollow tube axis, a circular step 45 combines the header 415 is limited to the base 43 by two split cover, detachably Convenience.

3 comprises a pump connected within housing 2 the piston sleeve 31, slidably connected to the piston 32 of the piston sleeve 31, piston rod 33, positioned below the piston sleeve 31 of the linear stepping motor 34, the rod 33 an upper end connected to the bottom of the piston 32, the lower end of the piston rod 33 is connected to the output of the linear motor 34 is rotatably connected to the top of the piston sleeve 31 the bottom of the second rotating joint 42, the liquid suction passage 421 communicating with the piston sleeve 31. The linear motor 34 is a screw type structure, the linear motor 34 of the screw as the output terminal 32 to drive the piston rod 33 and the lifting movement of the piston, the piston 32 can accurately control the distance moved by the linear motor 34 to precisely control the aspiration or discharge pump 3 liquid volume, easy to control, high precision of the suction line or discharge, the piston 32 using this structure can be eliminate the possibility of back suction inlet. 9 and pipette tiltable absorbent liquid discharge without affecting accuracy. 3 pump-free air pump, no air valve design can reduce the air flow inside the cabinet due to the air pump driven to reduce the risk of contamination, more efficient, and durable.

Bottom of the second rotating joint 42 is provided with downwardly protruding boss 424, the boss 424 rotatably disposed within the top of the piston sleeve 31, the third O-seal 31 between the inner surface of the boss 424 and a circumferential outer surface of the piston sleeve a sealing ring 35 connected to form a dynamic seal to prevent leakage of liquid between the boss 424 and the piston sleeve 31, good sealing effect. 424 weeks boss outer surface defines a third annular groove 426, a third O-ring 35 disposed in the third annular recess 426, to improve the sealing effect. Boss 424 defines a tapered bottom groove 425, the lower end of the top 421 of the liquid suction passage 425 communicating with the tapered grooves, so that the liquid in the tapered slot 425 of the drain 31 during piston sleeve can enter the channel faster absorbent 421, and reduces the impact between the liquid and the projection 424, the liquid discharge speed fast.

3 further comprises a pump body 31 provided at the bottom of the piston sleeve holder 36, sleeve piston sleeve 31 disposed outside of the fixed sleeve 37, holder 36 is fixed to the housing 2, the piston rod 33 vertically sliding wear provided on the holder 36, the bottom of the threaded sleeve 37 is fixed onto the holder 36 is connected to the top of the fixed sleeve 37 forming the pressing portion 31 extending to the top of the piston sleeve 371, a second rotary joint 42 of the bottom peripheral edge forming a flange 427, bottom flange 427 is pressed against the periphery of the top of the piston sleeve 31, the pressing portion 371 is pressed against the bottom of the top flange 427, the fixed sleeve 37 by the rotation of the second joint 42 is limited to the pressing portion 371 between the piston and the sleeve 31, such that rotation of the second rotatable joint 42, and is capable of sealing the piston sleeve 31, easy assembly and disassembly.

Holder cylinder 361 has a top portion 36, a circumferential outer surface of the cylindrical body 361 is provided with an external thread 362, the bottom of the piston sleeve 31 within the cylindrical body 361 is inserted, the bottom threaded mounting sleeve 37 is connected to the cylinder 361 , the fixed sleeve 37 by rotating fixing sleeve 37 can be adjusted down so as to adjust the tightness of the pressing portion 371 of the flange 427 of the pressure.

Connecting the pressing portion 371 forms a dynamic seal between the top and bottom of the flange 427 by a second O-ring seal 38, the bottom of the pressing portion 371 defines a second annular groove 372, the second O-ring 38 disposed in the second the annular recess 372, the pressing portion 371 to further prevent the leakage of liquid between the second rotary joint 42, the sealing better.

Periphery of the piston 32 outwardly between the inner surfaces of the piston sleeve 31 forms a dynamic seal is connected by a fourth sealing O-ring 39, outer circumferential surface of the piston 32 defines a fourth annular recess 321, the fourth sealing O- ring 39 is provided in the fourth annular groove 321, preventing fluid leakage between piston 32 and the piston sleeve 31, good sealing effect.

Housing 2 is provided with a display screen 5, the control button 6, the housing 2 equipped with a control circuit board 7, the display 5, a control button 6, the pump 3 is connected to the intelligent control system is formed an electric control circuit board 7, by setting keys 6 control the volume of liquid suction and discharge instructions and parameters sent to the control input of the circuit board 7, 7 after the processing instruction information displayed by the display control circuit board 5, and controls the linear motor 34 operates for suction drainage operation . Conventional liquid-absorbent auxiliary control switch 1000 is pressed intensity grams, and requires a long time when the absorbent hold the finger fatigue, assist the pipette of the present invention is a control key 6 presses the intensity of only 110 grams, and absorption liquid, discharge, dispense, mixed by pipetting, only one touch operation can be done automatically, no long hold. The present invention may be moved by controlling the volume of liquid freely set key 6, using 3 precise control of the automatic pipetting pump to operate without peg pipette level, easy to use. Auxiliary present invention includes a pipette free mode, quantitative mode, dispensing mode, mixed by pipetting mode, the operation is more convenient.

The present invention is capable of rotating suction connection piece 4 through the rotary joint device consisting of a pipette so that the absorbent body 9 is formed with an inverted V-shaped structure, to the center of gravity to maximize the pipette tube close to the user's wrist, elbow reduce pipetting expand amplitude greatly reducing fatigue, pipette 9 is rotatable to adjust the angle in the horizontal plane and a vertical plane full freedom for different experimental situations, different requirements, different operating positions and angles, users of different heights can be adjusted to the most appropriate operation state, the position control operation and the operation is accurate, easy to operate and more convenient, smooth, smooth, flexible, without shaking, reduce operational errors phenomenon with high precision, and greatly reduces the overall height and volume of the liquid-absorbent auxiliary, intensive operation small space and storage space, easy to operate applications in biological safety cabinets and other small spaces.

Of course, the foregoing description is only the preferred embodiment of the present invention, where it is under this structure, characteristics and principles of the scope of the invention patent applications made equivalent variations or modifications are included within the scope of the present invention patent application.

Claims (10)

  1. Rotary auxiliary pipette, which pipette comprises a body, a suction connection piece (1) is mounted pipette, the pipette comprising a housing body (2), disposed in the housing (2) a pump (3), characterized in that: said suction connection piece (1) rotatably coupled to the housing (2) by a rotary joint device (4), the suction connection piece (1) by a rotary joint device (4) and the pump housing (3 ) communication.
  2. Rotating said auxiliary absorbent according to claim 1, characterized in that: said swivel means (4) comprising a first swivel movable along a vertical plane of rotation (41), a first rotary joint (41) closed and the upper end is provided with a transverse protrusion with the first rotary joint (41) communicating with the hollow interior of the tube axis (411), the lower end of a first rotary joint (41) defines a connection port (412) and install the suction connection piece (1) a first rotary joint (41) rotatably connected by a hollow pipe shaft (411) in the pipette body, the hollow tubular shaft (411) and the pump housing (3) communication.
  3. The rotary assist the pipette to claim 2, wherein: said first rotary joint (41) of the hollow tube shaft (411) rotatably connected by a second swivel joint (42) rotatable in a horizontal plane the absorbent body, the hollow tubular shaft (411) rotatably connected to the second rotary joint (42), a second rotary joint (42) rotatably connected to the pipette body, a second rotary joint (42) defines an internal both ends of pipetting channels (421), the liquid suction passage (421) communicate with the pump body (3), the hollow tube shaft (411).
  4. Rotating said auxiliary absorbent according to claim 3, characterized in that: said second rotary joint (42) of the top sleeve is provided with joints connecting base (43), a second rotary joint (42) at the top of the front end face It defines the front end and the liquid suction passage (421) of the shaft hole (422) communicating the hollow tube shaft (411) through the header housing (43) and is rotatably connected to the shaft hole (422), a hollow tube shaft (411 ) projecting circumferential outer surface provided with a circular step (415), a circular step (415) rotatably disposed in the joint connector housing (43), a circular step (415) of the rear end surface of the second rotary joint (42) (44) sealingly connected to the front end fitting connecting base (43) is provided with a cover plate (45) by a first O-ring between the cover plate (45) sleeved onto the hollow shaft (411) placed in a circular the step (415) the position of the front cover plate (45) fixed to the linker base (43), the cover (45) is pressed against the rear end face of the front end of the circular step (415) by a locking screw.
  5. The rotary auxiliary pipette according to claim 4, wherein: said cover (45) is two, two cover plates (45) located on both sides of the axis of the hollow tube (411), two cover plate (45) side facing the hollow tube shaft (411) each define a semicircular hole (451) cooperating with the hollow tube shaft (411), two cover plates (45) of the semicircular holes (451) in combination forming (411) a circular hole for the shaft to pass through the hollow tube.
  6. The auxiliary rotary claim pipette of claim 3, wherein: said pump body (3) comprises a housing connected to the piston sleeve (31) (2) therein, the piston sleeve slidably connected ( 31) in the piston (32), a piston rod (33), the piston sleeve (31) below the linear motor (34), the upper end of the piston rod (33) connected to the bottom of the piston (32), a piston rod (33) the lower end of the straight line connecting the motor (34) output terminal, a bottom of the second rotary joint (42) rotatably connected to the top of the piston sleeve (31), the liquid suction passage (421) communicates with the piston sleeve (31).
  7. The auxiliary rotary claim pipette of claim 6, wherein: said second rotary joint (42) is provided with a bottom downwardly protruding projection (424), a boss (424) rotatably disposed in the piston sleeve the top (31), the boss (424) inner circumferential surface of the outer piston sleeve (31) (35) are connected by a third sealing O-ring between the surface of the boss (424) defines a tapered bottom groove (425), the lower end of the top of the absorbent communication channel (421) with a tapered slot (425).
  8. The auxiliary rotary claim pipette of claim 6, wherein: said pump body (3) further comprises a holder disposed (36) at the bottom of the piston sleeve (31), the piston sleeve sleeved (31) fixed to the outer sleeve (37), holder (36) fixed to the housing (2), a piston rod (33) slidable vertically bored in the holder (36), a fixed sleeve (37 ) is screwed onto the holder bottom portion (36), fixed to the top of the sleeve (37) with a molding (31) above the pressing portion (371) extending to the piston sleeve, the bottom periphery of the second rotary joint (42) forming a flange (427), a bottom flange (427) is pressed against the top peripheral edge of the piston sleeve (31), pressing a bottom portion (371) is pressed against the top flange (427) of.
  9. According to claim 8, said auxiliary rotary aspirator, characterized in that: said fixing seat (36) has a cylindrical top portion (361), the cylinder (361) is provided with an outer circumferential surface of the outer thread (362 ), piston sleeve (31) inserted inside the tubular body bottom (361), a fixed sleeve (37) is threaded onto the bottom of the cylinder (361).
  10. According to any of claims 1 to 9, one of the secondary rotary pipette, characterized in that: said housing is provided with a display screen (5) (2), the control button (6), a housing (2) equipped with a control circuit board (7), the display (5), the control button (6), the body (3), respectively (7) is electrically connected to the control circuit board.
PCT/CN2014/092222 2013-12-05 2014-11-25 Rotary auxiliary liquid aspirator WO2015081798A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201310652564.9 2013-12-05
CN201310652564.9A CN103638998B (en) 2013-12-05 2013-12-05 Rotary auxiliary Sipper

Publications (1)

Publication Number Publication Date
WO2015081798A1 true WO2015081798A1 (en) 2015-06-11

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103638998B (en) * 2013-12-05 2015-08-19 罗耿荣 Rotary auxiliary Sipper

Citations (6)

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US4527437A (en) * 1983-07-06 1985-07-09 Wescor, Inc. Pipette controller
US5844686A (en) * 1995-09-21 1998-12-01 Eppendorf-Netheler-Hinz, Gmbh System for pipetting and photometrically evaluating samples
CN101249463A (en) * 2007-02-16 2008-08-27 贝尔工艺产品股份有限公司 Hand-held device for moving liquid
CN103480441A (en) * 2013-10-16 2014-01-01 佛山市顺德区罗恩科学仪器有限公司 Auxiliary liquid suctioning device
CN103638998A (en) * 2013-12-05 2014-03-19 罗耿荣 Rotary type auxiliary aspirator
CN203620659U (en) * 2013-12-05 2014-06-04 罗耿荣 Rotation type auxiliary liquid-sucking device

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Publication number Priority date Publication date Assignee Title
US20070059215A1 (en) * 2005-09-14 2007-03-15 Pacific Image Electronics Co., Ltd. Micro pipette sensing device
CN201389463Y (en) * 2009-04-28 2010-01-27 罗耿荣 Electronic pipette with smooth transmission
JP2011115759A (en) * 2009-12-07 2011-06-16 Fukae Kasei Kk Pipette device
CN202224176U (en) * 2011-09-05 2012-05-23 罗耿荣 High-precision electric liquid mover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527437A (en) * 1983-07-06 1985-07-09 Wescor, Inc. Pipette controller
US5844686A (en) * 1995-09-21 1998-12-01 Eppendorf-Netheler-Hinz, Gmbh System for pipetting and photometrically evaluating samples
CN101249463A (en) * 2007-02-16 2008-08-27 贝尔工艺产品股份有限公司 Hand-held device for moving liquid
CN103480441A (en) * 2013-10-16 2014-01-01 佛山市顺德区罗恩科学仪器有限公司 Auxiliary liquid suctioning device
CN103638998A (en) * 2013-12-05 2014-03-19 罗耿荣 Rotary type auxiliary aspirator
CN203620659U (en) * 2013-12-05 2014-06-04 罗耿荣 Rotation type auxiliary liquid-sucking device

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CN103638998B (en) 2015-08-19

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