EP3538274A1 - Fluid-release unit and manual metering device with at least one fluid-release unit - Google Patents
Fluid-release unit and manual metering device with at least one fluid-release unitInfo
- Publication number
- EP3538274A1 EP3538274A1 EP17784547.6A EP17784547A EP3538274A1 EP 3538274 A1 EP3538274 A1 EP 3538274A1 EP 17784547 A EP17784547 A EP 17784547A EP 3538274 A1 EP3538274 A1 EP 3538274A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid delivery
- delivery unit
- head part
- fluid
- cap
- 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 title claims abstract description 111
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000565 sealant Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000284 resting effect Effects 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
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- 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
- B01L2200/028—Modular arrangements
-
- 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
- B01L2300/00—Additional constructional details
- B01L2300/04—Closures and closing means
- B01L2300/041—Connecting closures to device or container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/04—Closures and closing means
- B01L2300/041—Connecting closures to device or container
- B01L2300/042—Caps; Plugs
Definitions
- Fluid delivery unit and hand metering device with at least one fluid delivery unit
- the invention relates to a fluid delivery unit for a hand dosing device, in particular for a pipette, having a receiving space in which a displacement means is displaceable in order to receive or dispense a fluid, in particular a fluid, with the fluid delivery unit, with a shaft and with a head part, wherein the Receiving space is connected via a dispensing channel formed in the shaft with a discharge opening formed at a free end of the shaft, wherein the head part is arranged at a head end of the fluid dispensing unit opposite the free end of the shaft and wherein the head part has a cover cap which can be removed from the head part the at least one element of the fluid delivery unit arranged in the head part can be covered or covered.
- the invention further relates to a hand-dispensing device, in particular a pipette, with a base body and with at least one fluid delivery unit, wherein the base body displacement means for receiving and delivering a fluid, in particular a liquid, with the fluid delivery unit and actuating means for actuating the displacement means, and wherein the main body and the at least one fluid dispensing unit are detachably connected together.
- a hand-dispensing device in particular a pipette
- the base body displacement means for receiving and delivering a fluid, in particular a liquid
- the fluid delivery unit and actuating means for actuating the displacement means
- the main body and the at least one fluid dispensing unit are detachably connected together.
- the fluid delivery unit can also be removable, at least in part.
- elements which are arranged in the head part of such a fluid delivery unit can be covered with the help of the cap in its position of use on or in the head part and thus protected from contamination or damage.
- the often finely divided individual parts of the fluid delivery unit can easily fall apart and be lost after a release of the fluid delivery unit from the main body of the hand metering device. This is prevented by the previously mentioned cap in some of the prior art handheld dosing devices and fluid delivery units. In this case, a connection between the cap and the head part of the fluid delivery unit can be solved only with a certain effort, sometimes only with the use of special tools.
- the object of the invention is to provide a fluid dispensing unit and a hand dispenser of the type mentioned, which simplify disassembly of the fluid dispensing unit, for example, for their repair or cleaning.
- this object is achieved with a fluid dispensing unit of the type mentioned with the means and features of claim 1.
- a fluid dispensing unit of the type mentioned proposed that the cap is fastened by means of a releasable snap connection to the head part, wherein at least one latching projection and / or at least one detent recess of the snap connection has at least one aligned oblique surface such that the snap connection is releasable by turning the cap relative to the head part.
- the cap is rotatable relative to the head part in its position of use fixed to the head part for releasing the snap connection.
- a fluid dispensing unit is provided, the cap is on the one hand reliably attached to the head portion of the fluid delivery unit and the cap on the other hand easily and without the use of a disassembly aid can be easily removed from the head to the fluid dispensing unit, for example, for cleaning and / or repair and / or replacement of individual parts of the fluid dispensing unit arranged in the head part to disassemble or open.
- the fluid delivery unit has a sealing means which is arranged in the head part.
- the sealing means with the cap in its position of use in the head part is fixable or fixed.
- the cap can have a dual function. On the one hand, it can prevent the elements of the fluid delivery unit arranged in the head part from being lost or contaminated. On the other hand, it can ensure that the sealant remains positioned in its proper sealing position.
- the fluid delivery unit can be provided that the at least one latching projection on the cover cap and the at least one latching recess are arranged on the head part.
- the at least one detent recess on the cover cap and the at least one detent projection on the head part are arranged.
- the at least one latching projection has an oblique surface on two opposite sides which are oriented transversely to the direction of rotation of the cover cap.
- the at least one detent recess may each have an oblique surface on two opposite sides which are oriented transversely to the direction of rotation of the cover cap.
- each latching recess and each latching projection each have such an inclined surface on two opposite sides oriented transversely to the direction of rotation of the cover cap, the latching connection between the cover cap and the head part of the fluid delivery unit can be conceived by turning the cover cap relative to the head part in both Direction of rotation can be solved easily.
- the at least one inclined surface is formed by a chamfer on a transversely or at right angles to the direction of rotation of the cap oriented side of the locking projection or the detent recess.
- the fluid delivery unit may be formed as a piston unit, in which the receiving space is a cylinder into which a piston of a manual dosing device for discharging a fluid arranged in the cylinder can be inserted. Through a Insertion of the piston into the cylinder, the fluid contained therein can be expressed from the cylinder.
- the fluid delivery unit can be provided that - as a piston unit - as at least one displacement means itself has a piston which is displaceable in the receiving space. The piston can then be displaced within the receiving space with further displacement means, for example a manual dosing device.
- the cap may have a passage opening. Through this passage opening, for example, a piston and / or a piston rod of a manual dosing device, in particular a pipette, can be introduced into the receiving space.
- a piston and / or a piston rod of a manual dosing device in particular a pipette
- the sealant may be a sealing ring.
- the sealing ring when using the fluid dispensing unit according to the invention in a Handdosiervorraum having a piston, the sealing ring may also be a piston sealing ring, with a gap between a in the receiving space, in particular in the cylinder, insertable piston and the cylinder can be sealed.
- the sealant may be pressurized.
- a compression spring and / or a pressure piece can be arranged between the cover cap and the sealing means.
- the fluid dispensing unit according to the invention can be obtained when the cap is inserted or inserted into the head part.
- the at least one locking means so the at least one locking projection or at least one locking recess, are arranged on an outer circumference of the cap.
- the detent connection that completes the detent connection and / or the detent projection that completes the detent connection can be arranged or formed at a corresponding point of an inner circumference in a receptacle of the head part for the cover cap.
- the head part may have a receptacle for the cap and the cap can be used or inserted into the receptacle of the head part.
- the fluid delivery unit may further comprise at least one attachment means for releasably securing the fluid delivery unit to a body of a handheld dosing device.
- this attachment means may be a preferably formed on the head part thread, in particular an external thread.
- the cap may have a handle portion.
- this grip region can protrude beyond the head part over the head part, so that it is particularly easy for a user of the fluid dispensing unit to access.
- the area can be roughened, knurled and / or slip-resistant coated to a rotatable release the Make cap from the headboard even easier.
- a hand-dispensing device having the means and features of the independent claim directed to the hand-dispensing device.
- a hand-dispensing device of the type mentioned in the introduction is therefore proposed for achieving the object, in which the at least one fluid dispensing unit is a fluid dispensing unit according to the invention.
- the base body and the fluid delivery unit can be detachably connected or connected to one another by means of a screw connection.
- the fluid dispensing unit can be removed from the main body particularly easily.
- between the main body and the fluid delivery unit can also be a combined snap-screw connection.
- a snap-screw connection can be provided that upon reaching a defined screwing a locking connection is engaged or produced, the haptic and possibly also acoustic feedback on the proper preparation of the connection between the main body of the hand dosing
- the hand-metering device can have as displacing means at least one piston which can be inserted into a receiving space for a fluid by means of the actuating means and a piston rod which is connected to the actuating means and the piston.
- the latter may have, as a displacement means, a piston rod connected to the actuating means and to a piston of the fluid-dispensing unit.
- FIG. 1 is a perspective view of an inventive, designed as a pipette hand-dosing device
- Fig. 2 is a broken sectional view of the in FIG
- Fig. 3 is a sectional side view of the in the figures
- Fig. 4 is a cross-sectional view of the head portion of the fluid dispensing unit shown in Figs. 1 to 3
- Fig. 5 is an exploded view of the head portion of Figs.
- FIGS 1 to 4 shown fluid delivery unit
- Fig. 6 is a perspective view of the head portion of the illustrated in the previous figures fluid delivery unit in the assembled state.
- 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 main body 3 comprises at least one displacement means 5 with which a fluid, in particular a liquid, can be dispensed and received by the fluid dispensing unit 4.
- the base body 3 has an actuating means 5a in the form of a pusher for actuating the displacement means 5.
- the main body 3 and the fluid delivery unit 4 are detachably connected to each other by means of a screw 6.
- the displacement means 5 comprises a connected to a piston 7 of the fluid delivery unit 4 piston rod 8, which can be seen in Figure 2 in the neck. Piston 7 and piston rod 8 are connected to each other via a connecting piece 9.
- the fluid delivery unit 4 comprises a receiving space 10 for receiving an air cushion, a shaft 11 and a head part 12.
- the receiving space 10 is connected via a discharge channel 13 formed in the shaft 11 to a discharge opening 15 formed on a free end 14 of the shaft 11.
- the head part 12 is arranged on a head end 16, opposite the free end 14 of the shaft 11, of the fluid delivery unit 4.
- the head part 12 has a cap 17 which can be removed from the head part 12 and with which at least one sealing means 18 arranged in the head part 12 can be fixed in its position of use.
- the cap 17 is rotatably mounted in its position of use on the head part 12 relative to this and by means of a releasable snap connection 19 on the head part 12.
- at least one latching projection 20 and / or at least one latching recess 21 of the snap connection 19 has at least one inclined surface 22 oriented in such a way that the snap connection 19 can be released by turning the cover cap 17.
- two such latching projections 20 are formed on the cover cap 17.
- the head part 2 latching recesses 21.
- cracks 20 of the head portion 12 are formed in each case 2 such inclined surfaces 22 on each of the two Rastvor-.
- the two inclined surfaces 22 are formed on two opposite, transversely to the direction of rotation of the cap 17 oriented sides 23 and 24 of each of the two locking projections 20.
- the two inclined surfaces 22 of each of the two latching projections 20 are each formed by a chamfer on the transverse or perpendicular to the direction of rotation of the cap 17 oriented sides 23 and 24 of the respective latching projection 20.
- the fluid delivery unit 4 is designed as a piston unit.
- the receiving space 10 of this piston unit 4 is a cylinder 25.
- the cap 17 has an upper-side passage opening 26. Through this passage opening 26, the piston 7 and / or the piston rod 8 can be inserted into the receiving space 10 of the fluid delivery unit 4 designed as a cylinder 25 for displacing an air cushion located there in the direction of the delivery opening 15 connected to the cylinder 25 via the delivery channel 13.
- the displacement of the air cushion in the direction of the discharge opening 15 is used to carry out a volume of liquid to be dispensed from a pipette tip in a pipette tip.
- the pipette tip is plugged into the use position on the free end 14 of the shaft 11 and is then in pressure communication with the discharge opening 15 and with the discharge channel 13.
- the sealing means 18 of the fluid delivery unit 4 is a sealing ring 27, which can also be referred to as a piston sealing ring 27, since it seals a gap between a wall of the receiving space 10 and the piston 7. This at least when the piston 7 is inserted into the receiving space 10 designed as a cylinder 25.
- the sealing means 18 For pressurizing the present as a sealing ring sealant 27 18 between the cap 17 and the sealing means 18, the fluid delivery unit 4, a compression spring 28 and a pressure piece 29 on.
- the pressure piece 29 When located in the use position cap 17, the pressure piece 29 is pressed over the bias of the compression spring 28 against the sealant 18, so that this seal can create against the surfaces to be sealed against each other.
- the sealing means 18 can thus be reliably fixed in its position of use in the head part 12 of the fluid delivery unit 4.
- the head part 12 has a receptacle 30 for the cap 17.
- the cap 17 may be used in the position of use in the receptacle 30 of the head part 12, as it can be seen clearly for example in Figures 3 and 6.
- the fluid delivery unit 4 has a thread 31 designed as an external thread.
- the external thread 31 is formed on an outer side of the head part 12.
- the cover cap 17 also comprises a grip region 32, which in use position of the cap 17 on the head part 12 over the head part 12 survives.
- the handle portion 32 is provided with a knurl 33, so formed knurled.
- the main body 3 of the manual dosing device 1 has a counter-thread 34 in the form of an internal thread, which thread matches the thread 31 of the head part 12 which is designed as an external thread.
- this has the cap 17, with which at least one located in the head portion 12 of the fluid delivery unit 4 sealant 18 is fixable in its position of use.
- this is rotatable relative to the head part 12.
- the releasable snap connection 19 is provided, which is formed by at least one latching projection 20 and / or at least one latching recess 21, wherein at least one aligned oblique surface on the latching projection 20 and / or on the latching recess 21 22 is formed, that the snap connection 19 can be solved by rotating the cap 17 relative to the head part 12.
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)
- Closures For Containers (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 |
---|---|---|---|
DE102016121816.2A DE102016121816A1 (en) | 2016-11-14 | 2016-11-14 | Fluid delivery unit and hand metering device with at least one fluid delivery unit |
PCT/EP2017/001176 WO2018086722A1 (en) | 2016-11-14 | 2017-10-05 | Fluid-release unit and manual metering device with at least one fluid-release unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3538274A1 true EP3538274A1 (en) | 2019-09-18 |
EP3538274B1 EP3538274B1 (en) | 2020-08-19 |
Family
ID=60117619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17784547.6A Active EP3538274B1 (en) | 2016-11-14 | 2017-10-05 | Fluid-release unit and manual metering device with at least one fluid-release unit |
Country Status (5)
Country | Link |
---|---|
US (1) | US11207673B2 (en) |
EP (1) | EP3538274B1 (en) |
CN (1) | CN110167671B (en) |
DE (1) | DE102016121816A1 (en) |
WO (1) | WO2018086722A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11313159B2 (en) * | 2015-09-12 | 2022-04-26 | Adac Plastics, Inc. | Gesture access system for a motor vehicle |
Family Cites Families (23)
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DE820332C (en) * | 1950-09-27 | 1951-11-08 | Rudolf Ernst | Measuring tube for medicine drops |
DE2711124C2 (en) * | 1977-03-15 | 1979-05-10 | Labora Mannheim Gmbh Fuer Labortechnik, 6800 Mannheim | Hand pipette |
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 (en) * | 1989-12-21 | 1991-01-02 | 西南石油学院 | Batch liquid-removing apparatus for chemical test |
US5983733A (en) * | 1996-11-15 | 1999-11-16 | Hamilton Company | Manual pipette |
EP1087839B1 (en) * | 1999-03-05 | 2008-12-24 | Rainin Instrument LLC. | Improved battery powered microprocessor controlled hand portable electronic pipette |
US6254832B1 (en) * | 1999-03-05 | 2001-07-03 | Rainin Instrument Co., Inc. | Battery powered microprocessor controlled hand portable electronic pipette |
CN2367384Y (en) * | 1999-04-08 | 2000-03-08 | 蔡润芳 | Multishift liquid-transfer device |
US7976793B2 (en) * | 2003-11-27 | 2011-07-12 | Gilson S.A.S. | Electronic pipette |
DE102004003433B4 (en) | 2004-01-21 | 2006-03-23 | Eppendorf Ag | Pipetting device with a discharge device for pipette tips |
DE102007006076B4 (en) * | 2007-02-02 | 2008-10-30 | Brand Gmbh + Co Kg | Multichannel pipetting |
DE102007010299B4 (en) * | 2007-03-02 | 2009-01-29 | Eppendorf Ag | Handpipettiervorrichtung |
FI120672B (en) * | 2008-03-28 | 2010-01-29 | Thermo Fisher Scientific Oy | Pipette with bud |
DE102008048252A1 (en) * | 2008-09-12 | 2010-04-15 | Eppendorf Ag | pipetting |
DE102008048620B4 (en) * | 2008-09-23 | 2011-09-15 | Ahn Biotechnologie Gmbh | Electronic piston stroke pipette |
PL214640B1 (en) * | 2009-04-30 | 2013-08-30 | Pz Htl Spolka Akcyjna | Stem assembly to be installed in the mechanical or electronic pipette |
CN202538805U (en) * | 2012-03-30 | 2012-11-21 | 苏丹 | Reusable quantitative liquid transfer device |
FR3003643B1 (en) * | 2013-03-25 | 2015-04-17 | Gilson Sas | POSITIVE DISPLACEMENT PIPETTING SYSTEM HAVING ENHANCED EJECTION FUNCTION |
CN203244983U (en) * | 2013-05-08 | 2013-10-23 | 高俊峰 | Quantitative transfer pipe |
US9044750B2 (en) * | 2013-08-01 | 2015-06-02 | Ome Technology Co., Ltd. | Pipette and a nucleic acid purification apparatus |
CH708562A2 (en) * | 2013-09-13 | 2015-03-13 | Gyger Invest Ag | Dispenser for liquid substances. |
FR3012883B1 (en) * | 2013-11-07 | 2015-12-25 | Gilson Sas | POSITIVE DISPLACEMENT PIPETTING SYSTEM HAVING DESIGN FOR FACILITATING PREVENTION OF THE PISTON OF THE CAPILLARY PISTON ASSEMBLY |
CN203862267U (en) * | 2014-05-22 | 2014-10-08 | 李景峰 | Siphon quantitative adjustable liquid adding device |
-
2016
- 2016-11-14 DE DE102016121816.2A patent/DE102016121816A1/en active Pending
-
2017
- 2017-10-05 US US16/349,392 patent/US11207673B2/en active Active
- 2017-10-05 EP EP17784547.6A patent/EP3538274B1/en active Active
- 2017-10-05 WO PCT/EP2017/001176 patent/WO2018086722A1/en active Application Filing
- 2017-10-05 CN CN201780070113.0A patent/CN110167671B/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3538274B1 (en) | 2020-08-19 |
CN110167671A (en) | 2019-08-23 |
US11207673B2 (en) | 2021-12-28 |
WO2018086722A1 (en) | 2018-05-17 |
CN110167671B (en) | 2021-12-31 |
US20190262822A1 (en) | 2019-08-29 |
DE102016121816A1 (en) | 2018-05-17 |
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