• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The subject of the invention is a pipette with an adjustable volume, wherein an upper stop bushing provided with inside threading is arranged around the piston shaft of the pipette in corresponding threading formed around said piston shaft. When the press button is turned, the upper stop bushing that determines the top position of the piston can be moved by means of the thread joint up and down in relation to the piston shaft so as to adjust the volume of the pipette. In the frame casing of the pipette, along the side, a longitudinal slit passing through the frame casing and provided with a scale is arranged. At the bottom end of the piston shaft, an expansion part is arranged or formed into which a ball is fitted in a bore,, said ball being pressed outwards by a spring. When the press button is turned, the ball is always during the movement of rotation, when it comes over the slit in the pipette frame, pressed against the sides of the slit in the wall of the upper stop bushing thereby locking the press button and the piston shaft in position. Then, by means of its position in the slit, the ball expresses the pipettable volume, which can be read from the scale.
    公开号:SU1071211A3
    申请号:SU792774140
    申请日:1979-06-01
    公开日:1984-01-30
    发明作者:Тервамяки Юкка
    申请人:Коммандииттиихтие Финнпипетте Осмо А.Суованиеми (Фирма)；
    IPC主号:
    专利说明:

    ten ,
    23 2
    and
    fPi / g. 1 The invention relates to medicine, in particular, to volume-controlled pipettes, which will allow the administration of the test substance to be administered post-day and at predetermined doses. A known pipette containing a housing and a piston rod. Ul) The disadvantage of such a pipette is the impossibility of introducing an exact dose of a substance. A known pipette with an adjustable volume, comprising a housing, a piston rod, a spring button and a stop sleeve with a slot 21. The disadvantage of the known pipette is the impossibility the implementation of stepwise accurate dosage of medicinal substances. The purpose of the invention is to improve the accuracy of the dosage. The goal is achieved by the fact that in a pipette with an adjustable volume, comprising a housing, a piston rod, a spring-loaded button and a locking sleeve, on the side surface of the housing there is a slot provided with a scale, and at the end of the ijiTOKa there is a thickening with a hole in which placed a spring-loaded ball, interacting with the slot 1 shows a pipette with adjustable volume, general view; in fig. 2 - the same section; in fig. 3 is a section A-A in FIG. 2; in fig. 4 shows a variant of the construction shown in FIG. 3. A cylindrical cannula 2 with a terminal tube 3 is attached to the bottom part of the pipette casing 1. A piston 4 is installed in the cylindrical cannula, around which a helical spring 5 is installed, pressing upwards on the piston 1. At the upper end of the cylindrical cannula 2 there is an annular groove in which around the piston 4 a sealing ring b is installed, closed in the groove by an annular disk 7. The rod is located so that it acts on the upper end of the piston 4, and the upper end of the rod 8 is provided with a push button 9. On the inner side, the pipette housing 1 has an annular juice 10, on which the spring 11 rests, and is mounted around the piston rod 8. At the upper end of the pipette body 1, a taper sleeve 13 is fixed by means of a taper nut 12, the upper end of the second spring 9 being mounted on the lower surface of the sleeve 13. The upper retaining sleeve 14 using a thread 15 made on the piston rod 4 of the pipette rests on the bottom surface ring 10, when the rod 8 and the piston T are in the upper positions, whereby the upper stop sleeve 14 determines the upper position of the piston 4. In order that the upper stop sleeve 14 cannot rotate from the inside of the core whisker pipette 1, the outer circumference of the sleeve 14 is provided with a vertical groove 16, which comes in a vertical projection or wedge 17 of the housing 1 of the pipette. The device groove-wedge can be made and vice versa, i.e. the groove 16 may be located in the housing 1, and the wedge 17, respectively, in the upper locking sleeve 14. The stem 8 of the push button 9 at the lower end ends with a thickening 18, and in the recess or hole 19, made in the thickening 18, the ball 20 is squeezed in the outward direction by a spring 21. On the side of the housing 1, a longitudinal groove or slot 22 is provided, provided with a scale 23, the outer side of the slot being closed by a window 24. The pipette works as follows. When the push button 9 rotates, the bulge 18 rotates with the button and piston rod 8, and the ball 20 periodically moves along the slit 22 and presses against its side, thereby locking the rod 8 of the push button 9 in a certain position in the direction of rotation. Locking is eliminated by turning the push button 9 with a little more force in either direction. Instead of the coil spring 21 and the ball 20, the expanded part 18 may have a shape that forms sheet-like spring means 25 and a protrusion or bulge 26 corresponding to the same or replaced ball (Fig. 4). By placing in the groove or slot, the ball 20 or the corresponding means, such as the protrusion 26, indicate the volume pipetted, which can be read from the scale 23 and which is regulated or spatially adjustable on the other hand. On the other hand, the outer surface of the upper retaining sleeve 14 can be provided with labeled a point or a marked line that shifts in window 24 along scale 23 when the push button 9 is turned. In this case, the groove 16 in the sleeve does not coincide with the groove 22 of the scale. When the push button 9 is turned, it moves up and
    downward relative to the upper side of the sleeve 14, respectively, displacing the hinge 4, which is pressed by the spring 5 to the expansion 18 of the rod 8 of the button 9. In this case, the stroke length of the piston 4 either increases or decreases f
    When the pipette has been prepared, a button 9 is depressed, with the result that the upper locking sleeve 14 and the piston 4 move with the button 8.
    75,
    / g.
    which is down until button 9 is pressed to; the second pillar. From this position, by pushing the button, the piston can be moved further downward by the length of the second support 13 projecting from the end face of the housing 1. The upper movement stop of the piston 4 consists of a pull 10 in the housing 1, to which, after returning the piston 4 to the upper position, the upper 0 is pressed locking sleeve 14.
    权利要求:
    Claims (1)
    [1]
    ADJUSTABLE VOLUME PIPET, containing a body, a rod with a piston, a spring-loaded button and a locking sleeve, so that and, in order to increase the dosage accuracy, on the side. the surface of the housing has a slot provided with a scale, and at the end of the rod adjacent to the piston, a thickening is made with a hole in which a spring-loaded ball interacting with the slot is placed.
    Sil ·. ,, 1071211
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1071211A3|1984-01-30|Variable capacity pipet
    US4395921A|1983-08-02|Adjustable volume liquid dispenser
    US3610241A|1971-10-05|Syringe guide and indicator
    US4154108A|1979-05-15|Hand pipette
    US4273257A|1981-06-16|Jar mounted pipettor
    US4871092A|1989-10-03|Atomizing or metering pump
    KR890701152A|1989-12-19|Dosing device for dosing a measurand of liquid, such as an insulin combination in a container or cartridge
    KR900700149A|1990-08-11|Dosing device that dispenses a measured amount of liquid, such as insulin, from a cartridge
    US3805998A|1974-04-23|Dispensing pipette
    FI62470C|1983-01-10|pipette
    US4098125A|1978-07-04|Adjustable volume pipetting device
    US3741732A|1973-06-26|Fractional-fill pipette assembly
    JP5049451B2|2012-10-17|Dose adjustable syringe
    FI58875C|1981-05-11|pipette
    SU1088650A3|1984-04-23|Multiple-batch pipet
    US3931915A|1976-01-13|Liquid-containing cartridge and a device for dispensing measured amount of liquid from such a cartridge
    FI86968B|1992-07-31|Pipette.
    FR2436370A1|1980-04-11|PIPETTE WITH ADJUSTABLE VOLUME
    US3020938A|1962-02-13|Liquid dropper assembly with metering means
    FI57543B|1980-05-30|VOLUMREGLERBAR PIPETT
    US4464941A|1984-08-14|Device for the contactless metering of liquids
    US3490724A|1970-01-20|Three-legged stand
    SU964460A1|1982-10-07|Liquid batchmeter
    SU133988A1|1960-11-30|Syringe for remote set of macro and micro doses of radioactive liquid
    SU1366938A1|1988-01-15|Microsyringe for chromatographic analysis
    同族专利:
    公开号 | 公开日
    PL115638B1|1981-04-30|
    JPS6235041B2|1987-07-30|
    FI781764A|1979-12-03|
    DE2921443A1|1979-12-13|
    FR2427133B1|1984-12-07|
    IT1118696B|1986-03-03|
    IT7968164D0|1979-05-30|
    US4284604A|1981-08-18|
    DE2921443C2|1990-03-22|
    GB2021972A|1979-12-12|
    JPS54161965A|1979-12-22|
    FI57542C|1980-09-10|
    GB2021972B|1982-11-10|
    DD144010A5|1980-09-24|
    FR2427133A1|1979-12-28|
    PL215947A1|1980-02-11|
    FI57542B|1980-05-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE7320522U|1973-09-20|Sarstedtw Kunststoff Spritzgusswerk|Pipetting device|
    US2771217A|1953-07-20|1956-11-20|James W Brown|Measuring and dispensing device|
    US2771277A|1955-04-06|1956-11-20|United Aircraft Corp|Fin damper insert|
    US2792834A|1955-09-22|1957-05-21|Scientific Industries|Operating device for syringe or pipet|
    US3327904A|1966-01-11|1967-06-27|Greiner Scient Corp|Liquid dispensing devices|
    US3780734A|1971-12-10|1973-12-25|G Wulff|Hypodermic syringe holder and injector device|
    DE7338129U|1972-10-24|1974-01-24|Gilson R|Adjustable pipette|
    US3834590A|1972-10-24|1974-09-10|Drummond Scient Co|Microliter fluid delivery apparatus|
    JPS5234516A|1975-09-12|1977-03-16|Nippon Hardboard|Preventive switch stop and metallic plate of preventive swtich stop|
    US4050316A|1975-11-03|1977-09-27|Becton, Dickinson And Company|Pipette aspirator device|
    DE2711124C2|1977-03-15|1979-05-10|Labora Mannheim Gmbh Fuer Labortechnik, 6800 Mannheim|Hand pipette|
    US4096750A|1977-06-15|1978-06-27|Oxford Laboratories Inc.|Hand-held micropipettor with fluid transfer volume adjustment mechanism|
    US4141251A|1978-02-15|1979-02-27|Nichiryo Co., Ltd.|Pipetting device|JPS5919736B2|1981-02-09|1984-05-08|Nichiryoo Kk|
    FI62470C|1981-06-17|1983-01-10|Labsystems Oy|pipette|
    DE8208367U1|1982-02-05|1982-12-09|JenconsLtd., Leighton Buzzard, Bedfordshire|DOSING DEVICE FOR DISPENSING LIQUID FROM A CONTAINER|
    FI64752C|1982-06-29|1984-01-10|Labsystems Oy|VOLUME REGULATOR PIPETT|
    JPS6151827U|1984-09-10|1986-04-08|
    FI844320A|1984-11-02|1986-05-03|Labsystems Oy|UTSPAEDNINGSDOSERINGSANORDNING.|
    FI852704L|1985-07-08|1987-01-09|Labsystems Oy|ELDRIVEN PIPETT.|
    US5200151A|1990-05-21|1993-04-06|P B Diagnostic Systems, Inc.|Fluid dispensing system having a pipette assembly with preset tip locator|
    DE4209620C1|1992-03-25|1993-12-16|Eppendorf Geraetebau Netheler|Method for correcting the volume error ïV in a pipetting system|
    FI921648A0|1992-04-13|1992-04-13|Labsystems Oy|STEGPIPETT.|
    US5804144A|1993-04-21|1998-09-08|Labsystems Oy|Piston pipette|
    FI951766A0|1995-04-12|1995-04-12|Labsystems Oy|Faspipett|
    US5650124A|1995-07-24|1997-07-22|Gilson; Warren E.|Adjustable pipette|
    US5849248A|1996-03-05|1998-12-15|Rainin Instrument Co., Inc.|Adjustable volume pipette with improved volume adjustment lock mechanism|
    US6537505B1|1998-02-20|2003-03-25|Bio Dot, Inc.|Reagent dispensing valve|
    US6415669B1|1998-04-09|2002-07-09|Ccs Packard, Inc.|Dispensing apparatus having means for loading pipette tips in a dispense head|
    US6814936B1|1999-07-01|2004-11-09|Goran Enhorning|Pipette assembly having a small volume disposable tip|
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    FI20002241A0|2000-10-11|2000-10-11|Labsystems Oy|Adjustable pipette|
    WO2003057819A1|2002-01-07|2003-07-17|Uab Research Foundation|Electroporation cuvette-pipette tips, multi-well cuvette arrays, and electrode template apparatus adapted for automation and uses thereof|
    EP1531935A1|2002-08-27|2005-05-25|PZ HTL Spolka Akcyjna|Method of pipette calibration|
    US7396512B2|2003-11-04|2008-07-08|Drummond Scientific Company|Automatic precision non-contact open-loop fluid dispensing|
    FI20050340A0|2005-04-01|2005-04-01|Thermo Electron Oy|Calibratable pipette|
    DE102005033378B4|2005-07-16|2012-05-31|Eppendorf Ag|pipette|
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    CN103080724B|2010-04-26|2016-04-13|电流感应器公司|Portable viscometer|
    JP5466582B2|2010-06-08|2014-04-09|株式会社神戸製鋼所|Bush press-fitting inspection device, inspection method, inspection program, and bush press-fitting device|
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    CN110465343A|2016-06-15|2019-11-19|汉密尔顿公司|Liquid-transfering device, pipette tip connector and pipette tip: device and method|
    US11065614B2|2016-06-15|2021-07-20|Hamilton Company|Pipetting device, pipette tip coupler, and pipette tip: devices and methods|
    US11235318B2|2016-06-15|2022-02-01|Hamilton Company|Pipetting device, pipette tip coupler, and pipette tip: devices and methods|
    US10898892B2|2016-06-15|2021-01-26|Hamilton Company|Pipetting device, pipette tip coupler, and pipette tip: devices and methods|
    WO2021035053A1|2019-08-20|2021-02-25|Restek Corporation|Solid phase microextraction device, respository, and manipulator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI781764A|FI57542C|1978-06-02|1978-06-02|VOLUMREGLERBAR PIPETT|
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