EP3538271A1 - Handdosiervorrichtung - Google Patents
HanddosiervorrichtungInfo
- Publication number
- EP3538271A1 EP3538271A1 EP17777481.7A EP17777481A EP3538271A1 EP 3538271 A1 EP3538271 A1 EP 3538271A1 EP 17777481 A EP17777481 A EP 17777481A EP 3538271 A1 EP3538271 A1 EP 3538271A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- counter
- base body
- fluid delivery
- latching
- delivery unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 79
- 230000013011 mating Effects 0.000 claims description 21
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 230000000295 complement effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0286—Ergonomic aspects, e.g. form or arrangement of controls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/02—Adapting objects or devices to another
- B01L2200/025—Align devices or objects to ensure defined positions relative to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/08—Ergonomic or safety aspects of handling devices
- B01L2200/087—Ergonomic aspects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/14—Process control and prevention of errors
Definitions
- the invention relates to a hand-dispensing device, in particular a pipette, with a base body and with a fluid delivery unit, wherein the base displacement means for displacing a fluid, so for example for receiving or delivering a fluid, in particular a liquid, in or out of a pipette tip, and actuating means for Actuation of the displacement means comprises, and wherein the base body and the fluid delivery unit are detachably connected to each other by means of a screw.
- Handdosiervoriquesen are previously known from the prior art in different embodiments. They are used as so-called dispensers or as so-called pipettes. To clean the
- the base body and the fluid delivery unit can be releasably connected to one another by means of a screw connection.
- a screw connection In particular, when connecting the body with the fluid delivery unit, however, make sure that the screw is sufficiently strong, but not tightened too tight. If the screw connection is too loose, the accuracy of the manual dosing device may be impaired. If the screw connection is tightened too much, the interconnected parts of the manual dosing device may be damaged.
- the object of the invention is therefore to provide a Handdosiervorrich- tion of the aforementioned type, in which the main body and the fluid delivery unit can be reliably connected to each other with less effort.
- This object is achieved in a manual dispensing device of the type mentioned above with the means and features of claim 1 and in particular that between the base body and the fluid dispensing unit a locking connection is provided which can be locked by screwing the fluid dispensing unit with the base body.
- a manual dosing device which gives the user by locking the latching connection between the main body and the fluid delivery unit an acoustic and a haptic feedback that the screwed connection between the fluid delivery unit and the main body has reached its proper end position, so the screw sufficiently tight, but not too tight.
- the hand-dispensing device thus provides a connection between the main body and the fluid dispensing unit, which allows the advantageous fixed connection between the two parts of the hand-dispensing device that accompanies a screw connection, but in which no particular attention must be paid to the connection between make the parts properly.
- the user of the manual dosing device receives feedback from the manual dosing device about the successful screwing procedure in the form of the manual dosing device noticeable and / or audible engagement of the locking connection he ⁇ holds. In this way it is possible to tighten the screw repeatedly.
- the screw connection comprises a thread and a counter thread.
- the thread on the base body and the mating thread can be formed on the fluid delivery unit.
- the latching connection can comprise at least one latching element arranged on the main body and at least one counter-latching element arranged on the fluid discharge unit. It can then be provided that the at least one latching element and the at least one counter-latching element can be locked together by screwing the thread with the mating thread.
- the latching element and the counter-latching element designed and arranged are that they are locked together, so engage each other by the thread and the mating thread into a defined screw, especially to an end position of the screw, in which the main body and the fluid delivery unit are intended to be screwed together, are bolted together.
- the at least one latching element is a latching receptacle and the at least one counter-latching element is a latching projection.
- the at least one latching element is a latching projection and the at least one counter-latching element is a latching receptacle.
- At least two or more latching elements preferably evenly distributed about a longitudinal central axis of the base body, and at least two or three, preferably uniform, counter-latching elements distributed around a longitudinal center axis of the fluid delivery unit are provided on the base body. It is thus possible to sufficiently define the system of the fluid delivery unit in its fastening position on the basic body by means of the at least two latching elements and the at least two counter-latching elements. In this case, as many counter-locking elements as locking elements may be present.
- a number of locking elements is provided on the base body, which corresponds to an integer multiples or multiples, in particular a double or triple or quadruple, the number of counter-locking elements on the fluid delivery unit.
- six latching elements can be formed on the main body and three counter-latching elements on the fluid dispensing unit. This can favor the screw connection of the fluid delivery unit to the base body and the latching of the latching connection.
- the at least one latching element preferably axially, adjacent to the thread and the at least one counter-latching element, preferably axially, to be arranged adjacent to the mating thread.
- the base body has a threaded connector on which the thread, in particular as an internal thread, is formed.
- the fluid dispensing unit having a counter-threaded neck on which the counter-thread, in particular designed as an external thread.
- the thread can then be formed on the threaded neck of the body and the at least one locking element and on the counter ⁇ threaded neck next to the mating thread and the at least one counter-locking element.
- the threaded connector and / or the counter-threaded connector made of an elastically deformable material, for example made of plastic.
- the threaded connector is designed so that it is elastically deformable in the radial direction.
- the counter-threaded connector it may be advantageous in this context if it is designed such that it can be elastically deformed in the radial direction. This can promote the permanent function of the latching connection between the base body and the fluid delivery unit.
- the at least one latching element and the at least one counter-latching element extend in the radial and in the axial direction on the base body or on the fluid delivery unit.
- the axial extent of the locking projections can be used to that the locking projections serve as a defined axial stop.
- Such an axial stop which then by a corresponding to each other coordinated design of the locking elements and the Jacobrast- elements can be generated, may be advantageous so that the fluid delivery unit can be arranged relative to the main body always in the same axial position. If the at least one latching element and the at least one counter-latching element would not provide such an axial stop, it would possibly be possible to rotate the fluid-dispensing unit even further after latching the latching connection.
- the at least one latching element and the at least one counter-latching element each have mutually complementary bevels or oblique surfaces, by means of which the latching connection when loosening the screw connection is evident, a repeated separation and connection of the base body with the fluid delivery unit is possible without damaging the latching connection.
- the base body may have at least one axial stop and the fluid delivery unit at least one matching axial counter-stop.
- the at least one latching element form the at least one axial stop and the at least one counter-latching element form the at least one axial counter-stop.
- the locking element and the counter-locking element can assume a dual function.
- the fluid delivery unit can be a piston unit with a cylinder and with a piston which can be displaced into the cylinder and can be connected to the displacement means.
- the base body comprises a housing.
- the components of the body from external influences, such as pollution or Damage be protected.
- the thread and / or the at least one locking element is arranged on the housing of the base body / are.
- the fluid delivery unit may have a means for releasably holding a pipette tip.
- This means may be a shaft on the free end of a pipette tip is plugged or plugged.
- the manual dosing device can have a, in particular manually confirmable, ejection device for ejecting a pipette tip, for example the one already mentioned above.
- FIG. 1 is a perspective view of an inventive, designed as a pipette hand-dose device
- FIG. 2 is a broken sectional view of the in FIG.
- FIGS. 1 and 2 shows a perspective view of a lower part of a base body of the hand-held dosing device shown in FIGS. 1 and 2, wherein a threaded connector can be seen on the main body, in which a thread formed as an internal thread and a plurality of locking elements uniformly distributed around a longitudinal center axis of the main body are shown in FIG Form of locking receptacles or detent recesses are formed, 5 shows a perspective view of a fluid dispensing unit of the hand dispensing device shown in FIGS.
- fluid dispensing unit is designed as a piston unit, facing towards the base body in the position of use End a counter-threaded connector with a mating thread and with a plurality of evenly distributed about a longitudinal axis of the fluid delivery unit arranged counter-locking elements in the form of knobs or locking projections can be seen, as well
- FIGS. 1 to 6 show different views of a hand-held metering device, indicated as a whole by 1.
- the manual dosing device shown in the figures is designed as a mechanical and manually operable pipette 2.
- the manual dosing device 1 has a base body 3 and a fluid delivery unit 4.
- the base body 3 comprises displacement means 5 for displacing a fluid in the fluid delivery unit 4 and an actuating means 5a in the form of a pusher for actuating the displacement means 5.
- the base body 3 and the fluid delivery unit 4 are detachably connected to one another by means of a screw connection 6.
- the displacement means 5 is a piston rod 8 which is connected to a piston 7 of the fluid delivery unit 4 and which can be seen in the neck in FIG.
- Piston 7 and piston rod 8 are connected to each other via a connecting piece 9. Between the base body 3 and the fluid delivery unit 4, a latching connection 10 is provided, which can be locked by screwing the fluid delivery unit 4 with the base body 3.
- the screw connection 6 comprises a thread 11 on the main body 3 and a mating thread 12 on the fluid delivery unit 4.
- the latching connection 10 comprises a plurality of detent elements 13 arranged on the main body 3 and a plurality of mating detent elements 14 arranged on the fluid dispensing unit 4.
- the detent elements 13 and the mating detent elements 14 are thus arranged on the base body 3 or on the fluid dispensing unit 4, that they can be locked together by screwing the thread 11 with the mating thread 12.
- the latching elements 13 and the counter-latching elements 14 are distributed uniformly around a longitudinal central axis L of the base body 3 and the fluid delivery unit 4 on the main body 3 or on the fluid delivery unit 4. In total, six latching elements 13 are formed on the main body 3 and three counter-latching elements 14 on the fluid delivery unit 4. Thus, therefore, twice as many locking elements 13 as counter-locking elements 14 are present.
- the latching elements 13 and the counter-locking elements 14 are locked together by the thread 11 and the mating thread 12 into a defined screw position, which here represents an end position of the screw 6, in which the main body 3 and the fluid delivery unit 4 are intended to interconnect with each other be screwed.
- the user of the manual dosing device 1 receives an acoustic and a haptic feedback by snap the locking connection 10, as soon as the fluid delivery unit 4 is intended connected to the main body 3.
- the latching elements 13 arranged on the base body 3 are designed as trough-shaped latching receptacles 15.
- the arranged on the fluid delivery unit 4 counter-locking elements 14 are knob-shaped locking projections 16.
- the locking elements 13 are arranged in the axial direction adjacent to the thread 11 and above this on the base body 3.
- the counter-locking elements 14 are arranged axially adjacent to the mating thread 12 and above this on the fluid delivery unit 4.
- the main body 3 has a threaded connector 17, on which the thread 11 and the locking elements 13 are formed.
- the fluid delivery unit 4 in turn has a matching counter-threaded connector 18, on which the counter-thread 12 and the counter-locking elements 14 are formed.
- the thread 11 is designed as an internal thread and the mating thread 12 as an external thread.
- Both the threaded connector 17 and the counter-threaded connector 18 are elastically deformable in the radial direction to allow a latching and disengagement of the latching connection 10.
- Both the latching elements 13 and the counter-latching elements 14 extend in the radial direction as well as in the axial direction on the inner circumference of the threaded neck 17 or on the outer circumference of the counter-threaded neck 18.
- the locking elements 13 and the counter-locking elements 14 each have mutually complementary bevels or inclined surfaces 19, by means of which the locking connection 10 can be reversibly opened when loosening the screw 6. As soon as a corresponding torque on the screw 6 is applied, so the locking projections 16 can slip out of the associated locking receptacles 15 and the locking connection 10 are released. This is done by a occurring when loosening the screw 6 tangential movement between the locking elements 13 and the counter-locking elements 14 by means of complementary inclinations or inclined surfaces 19 is converted into a radially acting relative displacement of the counter-locking elements 14 to the locking elements 13, so that the counter-locking elements 14 and the locking elements 13 can be solved from each other.
- the base body 3 has within the threaded neck 17 a plurality of evenly distributed about a longitudinal central axis L of the base body 3 arranged stops 20 for limiting the screwing depth of the screw 6.
- the counter-locking elements 14, which are arranged on a peripheral collar 22 of the fluid delivery unit 4 function.
- the latching elements 13 are arranged on an end face 23 facing the position of use of the fluid delivery unit 4 of the stops 20 which extend radially into the interior of the threaded connection 17.
- the fluid delivery unit 4 is a piston unit comprising a cylinder 24, in which the piston 7 is axially displaceable by means of the displacement means 5 in the form of the piston rod 8 to receive a defined volume of liquid by means of the hand metering device 1 or deliver it by means of the hand metering device 1.
- FIG. 1 illustrates that the main body 3 is surrounded by a housing 29 of the manual dosing device 1.
- the fluid delivery unit has a shaft 25, on the free end 26 of a pipette tip is attachable. This shaft 25 serves with its free end 26 as a means for releasably holding a pipette tip.
- the manual dosing device 1 has a manually actuatable ejection device 27.
- this ejection device 27 comprises an ejector sleeve 28 which is axially displaceable relative to the shaft 25 of the fluid delivery unit 4 and which can be manually displaced axially relative to the shaft 25 by means of a corresponding ejection mechanism.
- the manual dosing device 1 comprises the base body 3 which can be screwed to the fluid dispensing unit 4, the locking connection 10 being provided in addition to the screw connection 6 for the detachable connection of the base body 3 to the fluid dispensing unit 4, which is locked by connecting the base body 3 to the fluid dispensing unit 4.
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016121815.4A DE102016121815A1 (de) | 2016-11-14 | 2016-11-14 | Handdosiervorrichtung |
PCT/EP2017/001128 WO2018086719A1 (de) | 2016-11-14 | 2017-09-22 | Handdosiervorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3538271A1 true EP3538271A1 (de) | 2019-09-18 |
EP3538271B1 EP3538271B1 (de) | 2021-05-26 |
Family
ID=59997300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17777481.7A Active EP3538271B1 (de) | 2016-11-14 | 2017-09-22 | Handdosiervorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US11148132B2 (de) |
EP (1) | EP3538271B1 (de) |
CN (1) | CN110099748B (de) |
DE (1) | DE102016121815A1 (de) |
WO (1) | WO2018086719A1 (de) |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI56937C (fi) * | 1978-08-04 | 1980-05-12 | Suovaniemi Finnpipette | Anordning foer att avlaegsna en engaongsspetsbehaollare fraon en pipett |
CH640152A5 (en) * | 1980-02-11 | 1983-12-30 | Pharmed Sa | Capillary micropipette |
US4671123A (en) * | 1984-02-16 | 1987-06-09 | Rainin Instrument Co., Inc. | Methods and apparatus for pipetting and/or titrating liquids using a hand held self-contained automated pipette |
CN2068418U (zh) * | 1989-12-21 | 1991-01-02 | 西南石油学院 | 化学实验定量移流器 |
FI921765A0 (fi) * | 1992-04-21 | 1992-04-21 | Labsystems Oy | Med en spetsavlaegsnare foersedd pipett. |
CN2367384Y (zh) * | 1999-04-08 | 2000-03-08 | 蔡润芳 | 多档位的移液器 |
PL357692A1 (en) * | 2002-12-11 | 2004-06-14 | P.Z.HTL Spółka Akcyjna | Method of parameter readout of pipette exchangeable bars and the pipette featuring exchangeable bar parameter readout |
DE102004055562B4 (de) | 2004-11-18 | 2006-09-28 | Eppendorf Ag | Handhabbares Dosiersystem |
DE102005041183B3 (de) | 2005-08-31 | 2007-01-04 | Eppendorf Ag | Pipettiervorrichtung |
DE102007006076B4 (de) * | 2007-02-02 | 2008-10-30 | Brand Gmbh + Co Kg | Mehrkanal-Pipettiervorrichtung |
US20080199361A1 (en) * | 2007-02-16 | 2008-08-21 | Francis Gomes | Hand-held pipetting device |
DE102007010299B4 (de) * | 2007-03-02 | 2009-01-29 | Eppendorf Ag | Handpipettiervorrichtung |
CN201086016Y (zh) * | 2007-08-28 | 2008-07-16 | 大龙医疗设备(上海)有限公司 | 一种多档位快速移液器 |
PL214640B1 (pl) * | 2009-04-30 | 2013-08-30 | Pz Htl Spolka Akcyjna | Zespól trzonu do zamontowania w pipecie mechanicznej lub elektronicznej |
PL220934B1 (pl) * | 2009-08-28 | 2016-01-29 | PZ HTL Spółka Akcyjna | Pipeta mechaniczna z nastawianą wartością objętości pobieranej cieczy |
FI20106184A0 (fi) * | 2010-11-11 | 2010-11-11 | Thermo Fisher Scientific Oy | Kahvapipetti |
FI20106185A0 (fi) * | 2010-11-11 | 2010-11-11 | Thermo Fisher Scientific Oy | Tukipipetti |
EP2732877B1 (de) * | 2012-11-19 | 2019-04-03 | Brand Gmbh + Co Kg | Kolbenhubpipette mit welchselbarer Verdrängereinheit |
US10016755B2 (en) * | 2015-01-08 | 2018-07-10 | Integra Biosciences Ag | Manual pipette with selectable plunger force |
CN204602214U (zh) * | 2015-03-27 | 2015-09-02 | 潍坊医学院 | 一种移液枪 |
CN205361387U (zh) * | 2016-01-26 | 2016-07-06 | 深圳市爱纳多电子商务有限公司 | 一种吸液手柄 |
-
2016
- 2016-11-14 DE DE102016121815.4A patent/DE102016121815A1/de active Pending
-
2017
- 2017-09-22 WO PCT/EP2017/001128 patent/WO2018086719A1/de active Application Filing
- 2017-09-22 CN CN201780070117.9A patent/CN110099748B/zh active Active
- 2017-09-22 EP EP17777481.7A patent/EP3538271B1/de active Active
- 2017-09-22 US US16/348,747 patent/US11148132B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3538271B1 (de) | 2021-05-26 |
WO2018086719A1 (de) | 2018-05-17 |
CN110099748A (zh) | 2019-08-06 |
CN110099748B (zh) | 2021-10-15 |
DE102016121815A1 (de) | 2018-05-17 |
US11148132B2 (en) | 2021-10-19 |
US20190321816A1 (en) | 2019-10-24 |
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