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WO2008135475A1 - Pièce tubulaire moulée pour appareils de perfusion - Google Patents

Pièce tubulaire moulée pour appareils de perfusion Download PDF

Info

Publication number
WO2008135475A1
WO2008135475A1 PCT/EP2008/055298 EP2008055298W WO2008135475A1 WO 2008135475 A1 WO2008135475 A1 WO 2008135475A1 EP 2008055298 W EP2008055298 W EP 2008055298W WO 2008135475 A1 WO2008135475 A1 WO 2008135475A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
pipe fitting
injection
fitting according
sealing
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.)
Ceased
Application number
PCT/EP2008/055298
Other languages
German (de)
English (en)
Inventor
Wolfgang Schadt
Harry Pütter
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.)
Fresenius Kabi Deutschland GmbH
Original Assignee
Fresenius Kabi Deutschland GmbH
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 Fresenius Kabi Deutschland GmbH filed Critical Fresenius Kabi Deutschland GmbH
Publication of WO2008135475A1 publication Critical patent/WO2008135475A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/04—Access sites having pierceable self-sealing members
    • A61M39/045—Access sites having pierceable self-sealing members pre-slit to be pierced by blunt instrument
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M2039/0205—Access sites for injecting media
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2206/00—Characteristics of a physical parameter; associated device therefor
    • A61M2206/10—Flow characteristics
    • A61M2206/20—Flow characteristics having means for promoting or enhancing the flow, actively or passively

Definitions

  • the invention relates to a pipe fitting for infusion devices according to the preamble of patent claim 1.
  • Such a pipe fitting is known from European published patent application EP 0 314 856 A1.
  • the injection channel is closed with an injection plug made of an elastic material, such as e.g. Latex or the like.
  • This injection plug sealingly closes the injection channel and can be pierced with an injection needle for adding a medicament. With the help of this injection needle access to the injection channel is then created.
  • the injection plug is to pierce only with a hypodermic needle, such needles always entail the risk of injury both for the patient and for hospital staff. Such injuries are particularly high risky if the needles are contaminated with pathogens or in a high dose of toxic drugs.
  • a sealing element such that has a valve element with a sealing element in a basic position closing closure element.
  • a needle-free injection instrument in the injection port e.g. the blunt tip of a needle-free injection cannula.
  • This allows a needle-free operation of the injection channel, which represents a significant improvement due to the disadvantages associated with needle Zuspritzinstrumenten, described above disadvantages.
  • the occupational health and safety and other requirements are increasingly stipulated that a largely needle-free work in the medical field is required and prescribed.
  • This claim is the pipe fitting of the invention.
  • valve element is a membrane which seals in a basic position.
  • This membrane can e.g. a slotted membrane with a biased and sealing in the basic position final slot as a closure element.
  • the pipe fitting according to the invention at the connection side of the injection channel connecting means for connecting to a Zuspritzinstrument said connecting means are preferably suitable for standardized connection geometries, such as Luer-Lock, designed.
  • a needle-free Zuspritzinstrument be firmly connected to the connection side of the injection channel, which facilitates the overall handling and in particular simplifies a precise dosage of zuzuspritzenden drug.
  • An executed as in claim 5 embodiment of the sealing element has the advantage that it can be easily and safely mounted with simple production possibility of the sealing element itself and in particular allows a good and reliable sealing of the injection channel at its connection side.
  • the sealing plug as a whole consists of an elastic material, this can be formed so that a seal is achieved to the housing parts.
  • the pipe fitting according to claim 5 it may be provided in one embodiment of the pipe fitting according to claim 5, that it has a one-sided fixedly connected to a wall of the pipe fitting web-like intermediate wall element which extends with a free end into the cavity of the sealing plug into the separation of on the one hand, the intermediate wall element located deflection and on the other hand, the intermediate wall element located injection channel (claim 7).
  • This embodiment allows for simpler manufacturing technology feasibility to introduce the transition between the deflection channel and injection channel maximum far to the Zuspritzport and thus to avoid a possible dead space particularly reliable.
  • the pipe fitting may be formed so that in a portion in which the web-like intermediate wall element lies with its free end within the cavity in the sealing plug, a gap between the wall of the pipe fitting and the web-like intermediate wall element is left, in which the sealing plug is seated with a part of its wall enclosing the cavity and sealingly surrounds the web-like intermediate wall element (claim 8).
  • the sealing plug in a section in which the web-like intermediate wall element is located with its free end within the cavity in the sealing plug, the sealing plug in its cavity surrounding the cavity side slit-like openings, which sit sealingly above the web-like partition element, wherein For safe separation between the deflection channel and injection channel of the plug with its sealing seated on the intermediate wall member slot must protrude into an area in which the intermediate wall element fluid-tight against the wall of the pipe fitting or is firmly connected thereto. (Claim 9). It is therefore important here that a secure seal is created between the wall of the sealing plug and the web-like intermediate wall element in order to avoid a premature transfer of the infusion fluid from the deflection channel into the injection channel.
  • a continuous flushing of the injection channel is ensured from its outermost, the connection side end facing forth into the drain channel.
  • Injection molding process can be easily and inexpensively produced in large quantities.
  • the plug can simply be placed in the intended position on the body and secured by sliding over the sleeve.
  • the sleeve may be attached to the body e.g. be determined by pressing or gluing or in any other suitable manner.
  • this may e.g. also be guided in a in the region of the valve element in the injection channel opening line piece, in particular a pipe section or a suitable attributable to the body wall geometry, as described according to an embodiment of claim 12.
  • Fig. 1 is a three-dimensional view of a possible embodiment of a pipe fitting according to the invention
  • FIG. 2 is a sectional view taken along a longitudinal center plane.
  • FIG a pipe fitting according to FIG 1 in a first possible embodiment of the lying in the interior of the pipe fitting channel guide.
  • Fig. 3 is a sectional view of the pipe fitting of Figure 1 comparable to the representation in Figure 2 in a second possible embodiment variant of the channel guide in the interior of the pipe fitting.
  • FIG. 5 as a fourth possible embodiment variant of the channel guide in a sectional view, a view of the pipe fitting of Figure 1 comparable pipe fitting.
  • FIGS. FIGS. 6 a and b show further views of the embodiment of the arrangement according to the representation in FIG. 5;
  • FIGS. 7 a and b show a first embodiment of the arrangement according to the illustrations in FIGS. 5 and 6 in two views and
  • FIGS. 8 a to c show a second embodiment of the arrangement according to the illustrations in FIGS. 5 and 6 in three views.
  • a pipe fitting is shown in a three-dimensional view from the outside and there generally designated by the reference numeral 1.
  • the pipe fitting 1 has an inlet connection 2 and an outlet connection 3, which are each designed for connection to standard infusion lines. Furthermore, the pipe fitting 1 has a designated 4 injection port, the in one protruding "Ann" of the pipe fitting 1.
  • the pipe fitting 1 has so far in an approximately Y-shape.
  • the membrane 5 is made of an elastic material, e.g. Rubber or silicone, formed, and the slot 6 seals in the basic position sealingly.
  • the pipe fitting 1 is constructed from a body 1 formed in one piece from plastic, to which the membrane 5 formed at the end of a plug 10 (cf., FIGS. 2 to 4) is attached.
  • the plug 10 with the membrane 5 is in turn by a pushed over this, also made of plastic sleeve 8, which on the body 1, for. is securely fixed by pressing or gluing, held in position.
  • the sleeve 8 is tapered over a shoulder and engages with this taper on a taper likewise formed on the stopper 10, so that the stopper 10 is held securely in position with the sleeve 8 by positive engagement.
  • a luer-lock compatible thread 9 is finally formed on the sleeve 8 for setting a Zuspritzinstrumentes with standardized connection part.
  • inlet channel 11 which extends along a connecting line between inlet port 2 and outlet port 3.
  • This inlet channel 11 then merges into a deflection channel 13, which leads essentially in the direction of the membrane 5.
  • the deflection channel 13 in turn opens into an injection channel 14 which can be reached via the slot 6 of the membrane 5 for injecting medicaments.
  • This injection channel 14 runs in the interior of the pipe fitting 1 again in the direction of the connecting axis between inlet port 2 and outlet port 3 and finally flows into an outgoing along said axis outlet channel 12.
  • the embodiments shown in Figures 2 to 4 are different only in the formation of Umlenkkanals and the transition region from the deflection channel in the injection channel.
  • the deflection channel extends outside of the plug 10 along the wall thereof and is guided in the region of a passage 15 through the wall of the plug 10 into a cavity formed in the interior of the plug 10, which belongs to the injection channel 14.
  • the deflection channel 13 already enters the side wall of the plug 10 on a lower end face opposite the membrane 5 and initially extends over a longitudinal channel 16 in this wall.
  • inclined channel 17 of the overflow passage 13 then passes through the wall of the plug 10 into the lying in the interior of the plug 10 cavity, which in turn is part of the injection channel 14.
  • the course direction of the oblique channel 17 is selected so that its opening is directed towards the underside of the Memran 5 inside the plug 10. This has a technical background to be described later.
  • the deflection channel 13 is not passed through the wall of the plug 10, but extends inside the plug 10 in a tubular extension 18 in the direction of the membrane 5, more precisely the underside thereof. Near the membrane ends the tubular extension 18 and the deflection channel 13 opens into the injection channel 14th
  • the deflection channel 13 is not passed through the wall of the plug 10, but extends inside the plug 10 along a web-like intermediate wall 19 in the direction of the membrane 5, more precisely the underside thereof. Near the membrane ends the intermediate wall 19 and the deflection channel 13 opens into the injection channel 14, on the other hand, the intermediate wall 19 again in the opposite direction to the Deflection channel 13 extends and ultimately opens into the outlet channel 12.
  • an infusion solution flow I is schematically indicated by an arrow. It can be clearly seen here that the infusion solution initially flows through the inlet channel 11, then passes into the deflection channel 13 and is guided into the region of the membrane 5 in the interior of the stopper 10. There, the infusion solution passes into the injection channel 14 and runs parallel and opposite to the direction of the flow of infusion solution in the interior of the Umlenkkanals 13 back until it enters the discharge channel 12 and leaves the tube fitting 1 again at the Ausströman gleich 3.
  • Fig. 6a is a side view of a pipe fitting according to the invention is shown with representation of the for the Fign. 7a and 7b and 8a and 8b, respectively, used section lines A-A and B-B.
  • Fig. 6b is comparable to Fig. 5 is a side view of the pipe fitting 1 according to the invention in the embodiment variant with the web-like intermediate wall 19 for dividing the deflection channel 13 and injection channel 14 is shown.
  • Figure 7a is a sectional plan view of the pipe fitting 1 from the Zuspritzport 4 ago (section line A - A in Fig. 6a), the arrangement of the plug 10 and the web-like partition wall 19 shown in a first embodiment of this type.
  • a representation of this variant in a sectional view along the section line B - B of FIG. 6a is shown in FIG. 7b. Good to see in these representations that between the side regions of the web-like intermediate wall 19 in the region of the free end 20 (see Fig.
  • the plug 10 there is a distance in which the plug 10 is inserted so that he on the one hand with its entire scope the Side regions of the web-like intermediate wall 19 surrounds the other with the wall of the pipe fitting comes into contact or sealingly abuts against this, in order to achieve a sealing separation of deflection channel 13 and injection channel 14 in this transition region.
  • the dimensions of the cavity 22 formed in the interior of the plug 10 and the width extension of the web-like intermediate wall 19 are selected so that the plug 10 sealingly surrounds the intermediate wall and reliably separates the deflection channel 13 from the injection channel 14 and prevents the passage of fluid.
  • the seal between web-like intermediate wall 19 and plug 10 is solved differently.
  • the plug 10 is provided with slot-shaped openings 23 (side slits) arranged in its lateral wall (see Fig. 8c). With these openings 23 it sits above the web-like intermediate wall 19, so that the edges of the openings 23 come to rest on the surfaces of the intermediate wall 19 (see Figures 8a and 8b, each of which is a sectional view along the section line A - A and B) - B of Fig. 6a show).
  • the dimensions of the slot-shaped openings 23 are matched in this case, both in terms of Schlitzhne and the slot height to the dimensions of the web-shaped intermediate wall 19 in the region of its free end 20, that here a fluid-tight system arises.
  • the plug 10 extends with its provided with the slot-shaped openings 23 section into a portion in which the intermediate wall 19 is fixedly connected to the wall of the pipe fitting or the plug with his Outer circumference sealing against this wall.
  • deflecting channel 13 and injection channel 14 are securely and sealingly separated from one another at their respective transition into the interior of the plug 10.
  • the design variants shown in Figures 3 to 8c are designed so that the infusion solution flow at the exit from the deflection channel 13 and entry into the injection channel 14 in the direction of Membrane 5 has pointing pulse.
  • the infusion solution is specifically directed once again in the direction of this membrane, so that it can be completely ruled out that a standing column of infusion solution can form in this area, which generally entails the risk of microbial contamination.
  • the membrane 5 as a sealing element on the connection side of
  • Injection port 4 (or the injection channel 14) has the following effect:
  • the membrane 5 or the slot 6 formed in it serves to provide access to the injection port 4, which can be used without needles.
  • the Luer-Lock compatible thread 9 formed on the injection port 4 serves to be able to fix such an injection instrument at the injection port 4, which facilitates accurate metering and overall work.
  • This element can e.g. as well be formed by a ball valve or the like.
  • FIG. 7 Corpus

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne une pièce tubulaire moulée (1) pour appareils de perfusion, comprenant un conduit d'entrée (11) et un conduit de sortie (12) qui sont configurés pour être raccordés, respectivement, avec un conduit de perfusion, et un conduit d'injection (14) pour l'injection de médicaments, qui est fermé, sur un côté de raccordement, par un élément d'étanchéité (10). Le conduit d'entrée (11) passe dans un conduit de dérivation (13) qui débouche, dans la zone de l'élément d'étanchéité (10), dans le conduit d'injection (14), ce dernier (14) passant, en définitive, dans le conduit de sortie (12). Afin que cette pièce tubulaire moulée (1) puisse être utilisée avec un instrument d'injection fonctionnant sans aiguille, l'invention est caractérisée en ce que l'élément d'étanchéité (10) présente un élément à soupape (5) comportant un élément de fermeture (6) fournissant une fermeture étanche en position de base.
PCT/EP2008/055298 2007-05-02 2008-04-30 Pièce tubulaire moulée pour appareils de perfusion Ceased WO2008135475A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007020859.8 2007-05-02
DE200710020859 DE102007020859A1 (de) 2007-05-02 2007-05-02 Rohrformstück für Infusionsgeräte

Publications (1)

Publication Number Publication Date
WO2008135475A1 true WO2008135475A1 (fr) 2008-11-13

Family

ID=39629053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/055298 Ceased WO2008135475A1 (fr) 2007-05-02 2008-04-30 Pièce tubulaire moulée pour appareils de perfusion

Country Status (2)

Country Link
DE (1) DE102007020859A1 (fr)
WO (1) WO2008135475A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10420924B2 (en) 2014-09-30 2019-09-24 B. Braun Melsungen Ag Connector device for a fluid system for medical purposes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052176A1 (de) * 2009-11-06 2011-05-12 Ulrich Gmbh & Co. Kg Verzweigungsstück für ein Fluidfördersystem
IT201600127162A1 (it) * 2016-12-15 2018-06-15 Borla Ind Raccordo a y per linee medicali
DE102020116247A1 (de) 2020-06-19 2021-12-23 Fresenius Medical Care Deutschland Gmbh Schlaucheinsatzstück für einen hydraulikschlauchsatz einer blutbehandlungsvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314856A1 (fr) * 1987-11-04 1989-05-10 CLINICO INFUSIONSTECHNIK GmbH Pièce en Y pour dispositifs d'infusion
US5178607A (en) * 1987-07-31 1993-01-12 Lynn Lawrence A Blood aspiration assembly septum and blunt needle aspirator
US5417673A (en) * 1993-01-13 1995-05-23 Medex, Inc. Whole blood sample needleless sample site
USRE37357E1 (en) * 1994-05-25 2001-09-04 Lawrence A. Lynn Luer-receiving medical valve and fluid transfer method
US7033339B1 (en) * 1998-05-29 2006-04-25 Becton Dickinson And Company (Part Interest) Self sealing luer receiving stopcock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5178607A (en) * 1987-07-31 1993-01-12 Lynn Lawrence A Blood aspiration assembly septum and blunt needle aspirator
EP0314856A1 (fr) * 1987-11-04 1989-05-10 CLINICO INFUSIONSTECHNIK GmbH Pièce en Y pour dispositifs d'infusion
US5417673A (en) * 1993-01-13 1995-05-23 Medex, Inc. Whole blood sample needleless sample site
USRE37357E1 (en) * 1994-05-25 2001-09-04 Lawrence A. Lynn Luer-receiving medical valve and fluid transfer method
US7033339B1 (en) * 1998-05-29 2006-04-25 Becton Dickinson And Company (Part Interest) Self sealing luer receiving stopcock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10420924B2 (en) 2014-09-30 2019-09-24 B. Braun Melsungen Ag Connector device for a fluid system for medical purposes

Also Published As

Publication number Publication date
DE102007020859A1 (de) 2008-11-06

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