US20100083776A1 - Needle interface for fluid connections - Google Patents

Needle interface for fluid connections Download PDF

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Publication number
US20100083776A1
US20100083776A1 US12/516,372 US51637207A US2010083776A1 US 20100083776 A1 US20100083776 A1 US 20100083776A1 US 51637207 A US51637207 A US 51637207A US 2010083776 A1 US2010083776 A1 US 2010083776A1
Authority
US
United States
Prior art keywords
needle
interface module
bush
sealing component
section
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.)
Abandoned
Application number
US12/516,372
Other languages
English (en)
Inventor
Arnold Aalders
Adrianus WilheImus Dionisius Maria Van Den Bijgaart
Jozef Christiaan Mathieu Versleegers
Ronald Cornelis De Gier
Petrus Henricus Maria Timmermans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Assigned to KONINKLIJKE PHILIPS ELECTRONICS N V reassignment KONINKLIJKE PHILIPS ELECTRONICS N V ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DE GIER, RONALD CORNELIS, AALDERS, ARNOLD, TIMMERMANS, PETRUS HENRICUS MARIA, VAN DEN BIJGAART, ADRIANUS WILHELMUS DIONISIUS MARIA, VERSLEEGERS, JOZEF CHRISTIAAN MATHIEU
Publication of US20100083776A1 publication Critical patent/US20100083776A1/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/16—Injection
    • G01N30/18—Injection using a septum or microsyringe
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/16—Injection
    • G01N30/18—Injection using a septum or microsyringe
    • G01N2030/185—Injection using a septum or microsyringe specially adapted to seal the inlet

Definitions

  • the invention relates to a female interface module and a compatible male interface module for establishing a fluid connection between two components, particularly between an instrument and consumables. Moreover, it relates to a consumable component and to an instrument comprising such interface modules.
  • Interface modules that can establish a fluid connection between two different components are particularly used in laboratory environments when fluid samples have to be processed.
  • the U.S. Pat. No. 5,339,701 discloses in this respect a needle interface between a sampler unit and a gas chromatograph, wherein one of these instruments comprises a hole covered by a septum while the other instrument comprises a tapered hollow needle. The needle punctures the septum when a fluid connection between the instruments is established.
  • the female interface module serves for the reception of a needle and comprises an elastic sealing component with a preformed channel through which a needle can be pushed from an exterior side to an interior side of the sealing component.
  • the preformed channel may in principle have any cross section, though a circular cross section is usually preferred.
  • the cross section of the preformed channel may exactly correspond to the cross section of the needle to be received; preferably, the cross section of the channel is however smaller than that of the associated needle (the diameter of a circular cross section may for example be smaller than the diameter of a cylindrical needle).
  • the channel is widened in this case if the needle is pushed through, thus providing a tight sealing of the needle within the channel.
  • the diameter of the cross section of the preformed channel may even be zero when it contains no needle, i.e. the channel may simply be a cut or puncture through the material of the sealing component without removing such material.
  • the described female interface has the advantage that the force with which a needle must be pushed through a sealing component is reduced as the needle can follow a preformed channel and must not cut its own path through the material. This eases the handling for a user and relieves the stability requirements for the needle. Moreover, the needle can have a blunt tip, which reduces the risk of injury for the users.
  • the sealing component has a higher compliance in radial direction of its channel than in axial direction of the channel.
  • the sealing component can therefore comparatively easy follow lateral movements of a needle in the preformed channel, while it is stiff in axial direction. If a needle is pushed through the channel, the sealing component will therefore not give away to the pressure in axial direction but keep its position, thus assisting the advancement of the needle.
  • the sealing component of the female interface module comprises a sleeve, wherein the preformed channel is disposed at (i.e. next to) one end of the sleeve.
  • the internal diameter of said sleeve is preferably larger than the external diameter of the needle to allow a free passage of the needle.
  • the sleeve may optionally project to the interior side of the sealing component. If there is a gas or liquid under an overpressure at the interior side of the sealing component, this will surround the sleeve and press it is against a needle in the channel. The sleeve has therefore a self-sealing effect.
  • the female interface module may further optionally comprise a funnel-shaped guiding element on the exterior side of the sealing component.
  • the guiding element provides an entrance of a large diameter for capturing the tip of a needle and guiding it to the comparatively small entrance of the preformed channel. The guiding element therefore eases the connection procedure and helps to avoid a cumbersome threading of the needle.
  • the invention further relates to a male interface module comprising a hollow needle and a bush, wherein
  • this interface module is that the needle is firmly mounted in a bush and that its free end is (partially) protected by said bush. Furthermore, the radial or lateral compliance of the needle is advantageous if the needle has to be pushed through a hole, for example through the preformed channel in a female interface module of the kind described above. The needle can in this case be bent if it is not exactly aligned with the hole and finds its way in a kind of self alignment. Moreover, the lateral compliance of the needle reduces the risk of injuries.
  • the radial movement of the needle is limited by the second section of the bush to the range of elastic deformation of the needle.
  • the second section of the bush which partially surrounds the free end of the needle, serves as a stop for the radial movement of the needle. It therefore prevents the needle from an excessive bending that would result in plastic deformation.
  • the required effect can be achieved by appropriate dimensions of the needle and bush.
  • the length L of the free end of the needle is at least twenty times larger than the (external) diameter d of the needle, i.e. L ⁇ 20 ⁇ d.
  • the compliance in lateral direction can alternatively or additionally also be achieved by using a flexible bush and/or by bearing the bush in a flexible way.
  • the tip of the free end of the needle is preferably blunt, i.e. without any sharp edges or apices. Such a blunt tip reduces the risk of injuries of a user and makes a particular protection of the needle in its unused state, e.g. by a cap, obsolete.
  • the male interface module comprises a tube connector that is in fluid communication with the interior of the needle and to which (by definition) a tube can be connected.
  • the tube connector can for example be directly fixed or integrated to the bush that bears the needle.
  • the invention further relates to a coupling system that comprises modules of the kind described above, i.e. a female interface module with an elastic sealing component comprising a preformed channel and a male interface module comprising a hollow needle located in a bush having a laterally flexible free end.
  • the (internal) diameter of the preformed channel in the female interface module shall be smaller than the external diameter of the needle in the male interface module, thus guaranteeing a tight sealing of the needle when it is introduced into the preformed channel and further providing a self-cleaning effect of the exterior of the needle.
  • the channel and/or the needle do not have circular cross sections, their “diameter” has to be defined appropriately, for example as the maximal distance between two points on the circumference of the cross section and/or the diameter of a circle having the same area as the cross section.
  • the invention further relates to a consumable component comprising a sample chamber in which a sample fluid can be provided and a female interface module of the kind described above.
  • the consumable component can for example be used in laboratory procedures for the investigation of biological fluids (blood, saliva etc.). Due to the particular design of its interface module, such a consumable component can readily be accessed with the help of a needle.
  • the invention further relates to an instrument for processing a sample in an external sample chamber, said instrument comprising a male interface module of the kind described above.
  • the instrument may favorably be used in combination with the aforementioned consumable component, as the preformed channel in the female interface module and the lateral flexibility of the hollow needle of the male interface module allow an easy coupling between these two components.
  • FIGURE shows a section through a coupling system according to the present invention comprising a consumable component with a female interface module and an instrument with a male interface module.
  • the coupling system shown in the FIGURE comprises a female interface module 10 and a male interface module 20 .
  • the female interface module 10 is integrated into a consumable component 11 , which is only partially depicted in the FIGURE as its particular design is irrelevant for the present invention.
  • the male interface module 20 is integrated into an instrument from which only a frame 21 is indicated in the FIGURE.
  • the consumable component is typically a disposable product that is used to perform one test, while the instrument is provided with all necessary equipment to perform the test.
  • the test fluids provided in the consumable typically have to be mixed, heated, cooled and transported.
  • the transport of these fluids from one part of the consumable to the other may be realized e.g. by pressurized air.
  • the consumable and the instrument have to be equipped with air-interfaces.
  • the transport of the fluids can be validated by measuring a pressure build-up with the instrument. For a good validation the aforementioned air-interfaces therefore need to be airtight.
  • a needle In known airtight interfaces between an instrument and a consumable component, a needle is used to pierce a closed membrane or septum.
  • One disadvantage of this method is that the needle has to be sharp and therefore needs to be shielded from creating a risk of injury.
  • Another disadvantage is that a membrane or septum is relatively stiff for lateral movements while it has to withstand the force needed to puncture it.
  • the coupling system shown in the FIGURE provides an improved airtight interface that avoids the aforementioned problems.
  • the male interface module 20 of this system comprises a hollow needle 23 that is placed in a bush 22 in such a way that a first short section of the needle 23 (here the lower end of the needle) is fixed in a first section 22 a of the bush, while the long residual “free end” of the needle 23 is free to move laterally.
  • the free end is partially (preferably to more than 50% of its axial extension L) surrounded by a second section 22 b of the bush 22 .
  • the internal diameter D of this second section 22 b is larger than the external diameter d of the needle such that an annular clearance is formed around the needle.
  • the end section of the needle 23 projects freely from the bush 22 .
  • the fixation point of the needle 23 in the bush 22 is as far away from the free tip of the needle 23 as possible.
  • the length L of the “free end” of the needle 23 is in the shown example more than 30-times larger than the external diameter d of the needle 23 . This ensures that the needle 23 is flexible in lateral direction.
  • the internal diameter D of the second section 22 b of the bush 22 is chosen such that it stops the lateral movement of the needle just before it would lead to an irreversible plastic deformation of the needle. At the upper end of the section 22 b , the needle cannot move more than a distance (D/2 ⁇ d/2) to either side.
  • the outside of the needle 23 has preferably a smooth surface, while the tip of the needle 23 is blunt with its edges being de-burred to ensure a smooth entry of the needle 23 into the female interface module and to minimize the risk of injuries.
  • the needle 23 is for example glued or pressed into the first section 22 a of the bush 22 to make the connection between bush 22 and needle 23 airtight and to fixate the needle 23 into the bush 22 .
  • the bush 22 is provided with a tube interface 24 that makes it possible to connect a tube (not shown) for an exchange of fluids with the interior of the needle 23 .
  • a typical material of the bush is stainless steel or a plastic.
  • the second part of the coupling system is the female interface module 10 in the consumable.
  • This module 10 comprises a sealing component 12 that can for example be made from rubber or a similar elastic material and that comprises an open, preformed channel 12 a which fits around the needle 23 to make an airtight interface.
  • the diameter of the channel 12 a in the sealing component 12 is (at rest) smaller than the external diameter d of the needle 23 ; it may for example have a value between 0% and 99% of the diameter d, most preferably between 50% and 99%.
  • the sealing component 12 will thus have to stretch if the needle 23 is inserted and create an airtight interface.
  • a lateral flexibility of the sealing component 12 makes sure that it can follow a side movement of the needle 23 without loosing its airtight capabilities.
  • the sealing component 12 is however provided with some stiffness to prevent a needle 23 from pushing against instead of pushing through the sealing component 12 .
  • the sealing component 12 optionally comprises a sleeve 12 b that projects upward into the interior of the consumable and that carries the preformed channel 12 a at its upper end. This sleeve 12 b ensures an extra air-tightness when overpressure is applied in the interior of the consumable.
  • the female interface module 10 further comprises a guiding element 13 located on the exterior side of the sealing component 12 , i.e. facing the instrument.
  • the guiding element 13 is shaped in such a way (e.g. like a funnel) that the needle 23 can pre-align to the sealing component 12 and that it can act as a stop that limits the lateral movement of the needle 23 with respect to the sealing component 12 .
  • the needle 23 and the bush 22 are commonly carried by a frame 21 of the instrument.
  • the needle 23 When a new interface is made between the instrument and the consumable, the needle 23 is pushed through the sealing component 12 . As soon as the sealing component 12 has its airtight fit around the needle 23 , it acts as a cleaner for the interface by pushing dirt particles ahead.
  • the coupling system can favorably be used in all instruments/products that need to make an airtight connection, for example in laboratory instruments or production equipment. It provides the following advantages:

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
US12/516,372 2006-12-01 2007-11-23 Needle interface for fluid connections Abandoned US20100083776A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06125200 2006-12-01
EP06125200.3 2006-12-01
PCT/IB2007/054762 WO2008068663A1 (en) 2006-12-01 2007-11-23 Needle interface for fluid connections

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/054762 A-371-Of-International WO2008068663A1 (en) 2006-12-01 2007-11-23 Needle interface for fluid connections

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/037,501 Division US9063108B2 (en) 2006-12-01 2011-03-01 Needle interface for fluid connections

Publications (1)

Publication Number Publication Date
US20100083776A1 true US20100083776A1 (en) 2010-04-08

Family

ID=39267910

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/516,372 Abandoned US20100083776A1 (en) 2006-12-01 2007-11-23 Needle interface for fluid connections
US13/037,501 Expired - Fee Related US9063108B2 (en) 2006-12-01 2011-03-01 Needle interface for fluid connections

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/037,501 Expired - Fee Related US9063108B2 (en) 2006-12-01 2011-03-01 Needle interface for fluid connections

Country Status (7)

Country Link
US (2) US20100083776A1 (ru)
EP (1) EP2089702A1 (ru)
JP (1) JP5000724B2 (ru)
CN (1) CN101548182B (ru)
BR (1) BRPI0719528A2 (ru)
RU (1) RU2452945C2 (ru)
WO (1) WO2008068663A1 (ru)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036612A1 (de) * 2007-08-02 2009-02-05 Dimatec Analysentechnik Gmbh Einspritzport für Analysengeräte, Anordnung zur Betätigung eines Einspritzports sowie Analysengerät mit einem Einspritzport
US8211210B2 (en) * 2010-02-04 2012-07-03 Cameron International Corporation Apparatus, systems and methods for sampling and conditioning a fluid
RU2576977C2 (ru) * 2014-06-10 2016-03-10 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" Замедляющая система
CN108469407B (zh) * 2018-03-16 2021-01-12 中国石油大学(华东) 一种检测表面洁净程度的装置及方法

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US3353411A (en) * 1966-02-07 1967-11-21 Upjohn Co Apparatus for sampling gas from plastic foam
US4998927A (en) * 1989-08-18 1991-03-12 Vaillancourt Vincent L Connector
US5339701A (en) * 1991-02-28 1994-08-23 Tekmar Company Needle interface apparatus
US5607392A (en) * 1995-01-13 1997-03-04 Ryder International Corporation Fixed needle connector for IV assembly and method of assembling
US6145967A (en) * 1997-10-24 2000-11-14 Hewlett-Packard Company Method and apparatus for configuring a fluid interconnect for an ink-jet printhead
US20020131902A1 (en) * 1998-03-06 2002-09-19 Abner Levy Self resealing elastomeric closure
US6526812B2 (en) * 2001-07-14 2003-03-04 Leap Technologies, Inc. Self-washing injection apparatus
US20040067169A1 (en) * 2001-02-08 2004-04-08 Reinhard Krause Closure for a reagent container
US20050228362A1 (en) * 2001-09-06 2005-10-13 Vaillancourt Vincent L Closed system connector assembly
US7314759B2 (en) * 2001-12-14 2008-01-01 Darrell Lee Bigalke Continuous fluid sampler and method

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US4615226A (en) * 1985-02-04 1986-10-07 Hewlett-Packard Company Apparatus and method for introducing solutes into a stream of carrier gas of a chromatograph
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353411A (en) * 1966-02-07 1967-11-21 Upjohn Co Apparatus for sampling gas from plastic foam
US4998927A (en) * 1989-08-18 1991-03-12 Vaillancourt Vincent L Connector
US5339701A (en) * 1991-02-28 1994-08-23 Tekmar Company Needle interface apparatus
US5607392A (en) * 1995-01-13 1997-03-04 Ryder International Corporation Fixed needle connector for IV assembly and method of assembling
US6145967A (en) * 1997-10-24 2000-11-14 Hewlett-Packard Company Method and apparatus for configuring a fluid interconnect for an ink-jet printhead
US20020131902A1 (en) * 1998-03-06 2002-09-19 Abner Levy Self resealing elastomeric closure
US20040067169A1 (en) * 2001-02-08 2004-04-08 Reinhard Krause Closure for a reagent container
US6526812B2 (en) * 2001-07-14 2003-03-04 Leap Technologies, Inc. Self-washing injection apparatus
US20050228362A1 (en) * 2001-09-06 2005-10-13 Vaillancourt Vincent L Closed system connector assembly
US7314759B2 (en) * 2001-12-14 2008-01-01 Darrell Lee Bigalke Continuous fluid sampler and method

Also Published As

Publication number Publication date
US20110146421A1 (en) 2011-06-23
BRPI0719528A2 (pt) 2013-12-31
JP5000724B2 (ja) 2012-08-15
CN101548182A (zh) 2009-09-30
EP2089702A1 (en) 2009-08-19
RU2452945C2 (ru) 2012-06-10
JP2010511171A (ja) 2010-04-08
RU2009125037A (ru) 2011-01-10
WO2008068663A1 (en) 2008-06-12
CN101548182B (zh) 2012-10-10
US9063108B2 (en) 2015-06-23

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AS Assignment

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N V,NETHERLANDS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AALDERS, ARNOLD;VAN DEN BIJGAART, ADRIANUS WILHELMUS DIONISIUS MARIA;VERSLEEGERS, JOZEF CHRISTIAAN MATHIEU;AND OTHERS;SIGNING DATES FROM 20080219 TO 20080304;REEL/FRAME:022737/0143

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION