WO2009006960A1 - Dispositif à canule de prélèvement de liquides rachidiens (liqueur) - Google Patents

Dispositif à canule de prélèvement de liquides rachidiens (liqueur) Download PDF

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Publication number
WO2009006960A1
WO2009006960A1 PCT/EP2008/003657 EP2008003657W WO2009006960A1 WO 2009006960 A1 WO2009006960 A1 WO 2009006960A1 EP 2008003657 W EP2008003657 W EP 2008003657W WO 2009006960 A1 WO2009006960 A1 WO 2009006960A1
Authority
WO
WIPO (PCT)
Prior art keywords
cannula
spinal
connecting part
cuvette
cannula device
Prior art date
Application number
PCT/EP2008/003657
Other languages
German (de)
English (en)
Inventor
Hans Haindl
Original Assignee
Hans Haindl
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 Hans Haindl filed Critical Hans Haindl
Publication of WO2009006960A1 publication Critical patent/WO2009006960A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/0045—Devices for taking samples of body liquids
    • A61B2010/0077—Cerebrospinal fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/40—Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment
    • 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
    • A61M39/22—Valves or arrangement of valves
    • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
    • A61M2039/267—Valves closing automatically on disconnecting the line and opening on reconnection thereof having a sealing sleeve around a tubular or solid stem portion of the connector

Definitions

  • Needle device for the removal of spinal fluid (cerebrospinal fluid)
  • the invention relates to a cannula device for the removal of cerebrospinal fluid (CSF), which has a thin spinal cannula sharpened at one free end and is connected at its other end fixed to a connecting part, wherein the spinal cannula (2) immediately behind her sharpened free end (4) has a lateral opening, and the connecting part is at least partially transparent.
  • CSF cerebrospinal fluid
  • Cannula devices of the type in question are well known and serve in neurology to remove cerebrospinal fluid (CSF) from the patient for diagnostic purposes. For diagnostic differentiation, this spinal fluid is taken in three fractions, which are then examined separately.
  • the known cannula devices have a thin spinal cannula, with which the spinal space containing the spinal fluid is punctured. When the spinal space is reached, the cerebrospinal fluid drips off the spinal cannula. Then the first drops are collected in a small cuvette. Then the cuvette is changed and the next drops are collected, after which the cuvette is changed again to catch the last fraction of the cerebrospinal fluid.
  • the cannula has at its end remote from the tip of a connecting part, often called safety connector, in which there is a receiving opening for coupling a cuvette.
  • the cannula protrudes with its tip facing away from the end in this interior, by this end is covered by a retractable protective cap.
  • the safety connectors for the safety cuvettes are in hibernation, ie without a connected cuvette, tight. Thus, if, with the removal of the stylet, such a safety connector were placed on the spinal cannula, it would not be possible to withdraw any spinal fluid, since the pressure under which it is located is not able to compress the air cushion in the cannula so far. that the liquid column is visible in the neck of the cannula.
  • EP 0 682 954 B1 describes a spinal cannula which has a thin cannula with a piercing point sharpened at its free end, which is provided with an opening and the rear end portion of which is fastened in a one-piece, clear-plastic grip part. Inside the transparent handle part is located between two flange a CSF control chamber, by means of which in the spinal puncture the liquor reflux can be controlled. At the piercing point opposite Overlying side of the handle portion is provided a cylindrical projection with a Luer-bore for positive reception of the Luer plug cone of a drug tip.
  • this spinal cannula is provided with a stylet, which is insertable through the hollow handle portion into the cannula, to the extent that there the front end of the stylet, the opening of a piercing tip can be closed.
  • DE 42 26 476 C1 describes a cannula with a through-channel and a cylindrical, rigid cannula tube whose ground tip is curved on a central axis. The tip has a facet cut at the very front and immediately thereafter a ground cut, where the through-channel also opens.
  • DE 101 42 450 C1 describes a device for combining a liquid component accommodated in a first container and a solid or liquid component received in a second container under sterile conditions.
  • the device has a first cylindrical hollow body for receiving the first container in the region of its closure and a second cylindrical hollow body for receiving the second container in the region of its closure.
  • the first hollow body serves for the displaceable reception of a cup-shaped cannula carrier and can be inserted into the second hollow body.
  • the cup-shaped cannula carrier takes in the region of its bottom portion fixed to a central, axially directed transfer cannula, which is provided with spit ends.
  • the two containers are pushed towards each other, until initially the cannula of the remaining in its position cannula carrier the closure of the container pierces and thereafter - upon further compression - pierces the other end of the cannula the closure of the container, so that the two containers are connected via the cannula.
  • a steel cannula for spinal and epidural anesthesia known from EP 0 359 987 A2 consists essentially of a straight cylindrical tube made of steel, at the front end of which a piercing point is formed and whose rear end is fastened to a grip sleeve of transparent material.
  • the grip sleeve is concentrically penetrated by a conically widened to the rear cavity, which is composed of two coaxial successive conical sections of different opening width.
  • the rear conical portion terminates open and at its edge the grip sleeve is provided with radially outwardly directed lugs which serve as locking elements for the coupling part of a syringe.
  • a cylindrical tube channel which opens at the front at a sideways opening and at the rear at a central passage.
  • the piercing tip can have a convexly curved wall side which, with the opposite straight wall side, delimits the lateral opening, which is provided with a rear cutting edge and a lancet-shaped front piercing part ending in a point-faceted cut.
  • a cylindrical straight tube it is also possible for a cylindrical straight tube to be made thinner at its front end section and to be designed as a closed pointed cone. finished piercing point.
  • Immediately behind the cone may be in the pipe wall an opening with a circular or square cross-section.
  • the invention has for its object to provide a cannula device, in short a puncture set, for the removal of spinal fluid, which is completely safe from contamination and at the same time allows a simple puncture and easy detection of Liquor Weghnees.
  • the basic idea of the teaching according to the invention is to combine a spinal cannula without stylet with a suitable safety connector.
  • the spinal cannula has a lateral hole and is preferably sharpened pencil-shaped at the tip. This combination creates a system for the contamination-free removal of spinal fluid.
  • the protective cap In order for the surge to be visible to the physician, an opening of the cannula must be made at its end, and Although so that it is safe against contamination. For this purpose, the protective cap must be pierced, either by placing a cuvette or a corresponding venting part.
  • the connecting part of a first and a second part which are interconnected via a conical pin / receiving opening, wherein the second part forms a safety adapter for connecting a cuvette.
  • the safety adapter has at its one end the conical pin and at the other end a female bayonet receptacle into which the corresponding counterbay of a safety cuvette can be snapped. Inside this bayonet mount is a sharpened cannula suitable for penetrating the protective cap and stopper of the safety cuvette. This cannula is protected by a condom-like silicone or rubber cap, so that they are at rest, d. H. is tight without coupled cuvette.
  • a first part 8 having at one end the conical pin for insertion into the conical receiving opening and at its other end an opening for receiving the connecting part of a cuvette.
  • a second part is provided which has an end which, instead of a cuvette, can be inserted into the receiving opening for a cuvette in the first part and has a cavity which is closed by a membrane which is permeable only to air and not to spinal fluid and is punctured upon insertion of the second part by a short cannula which projects from the conical pin in the region of the receiving opening and at its end facing away from the conical pin end has a sharp point, the membrane when placed of the second part pierces the first auxiliary part.
  • the cavity avoids the build up of an air back pressure in the spinal cannula and the cavity in the region of the connecting part is at least partially transparent, so that as a result, the outflow of liquor and entry into the cavity is not obstructed and so by observing the cavity for the attending physician it can be determined that he has hit the CSF area.
  • the cavity can also be located in the first part of the connecting part.
  • FIG. 2 shows an enlarged section within a circle A in FIG. 1, FIG.
  • Fig. 3 corresponds substantially to Fig. 2 and illustrates the function of the second part of the connecting part
  • FIG. 4 shows a modification of FIG. 3.
  • the cannula device shown in section in FIG. 1 has a spinal cannula 2 whose free end 4 is ground sharply, which is protected in its entirety by a tube 6 which is attached to a part 8 of which the rear end of the spinal cannula 2 is held ,
  • the part 8 has a conical receiving opening 10, in which a conical pin 12 of a second part 14 is inserted, which has a receiving opening 16, in which a venting part 19 is inserted, which is closed at the rear by a membrane 21, for air, but not permeable to cerebrospinal fluid.
  • the parts lying in a circle marked A The cannula device are shown enlarged in Fig. 2, wherein the venting part 19 is replaced by a conventional cuvette 20.
  • the usual cuvette 20 has a cavity 22 which is closed by a membrane 24.
  • a short cannula 26 which projects into the receiving opening 16 and is covered there by a protective cap 28.
  • the membrane 24 facing the end of the short cannula 26 has a sharp tip 30.
  • the part 8 is made of transparent material, but may also have a transparent window, so that a provided in the connecting part 8 cavity 32 and therein entering Liquor can be observed.
  • the cannula device In the position shown in Fig. 2, the cannula device is not yet suitable for the removal of cerebrospinal fluid.
  • the cuvette 20 is pushed with its end 18 into the receiving opening 16, whereby the sharp tip 30 of the short cannula 26 first pierces the front end of the protective cap 28 and then the membrane 24 with the result that the interior of the spinal cannula 2 communicates with the cavity 22 of the cuvette 20 via the cavity 32 in the part 8, the receiving opening 10 and the interior of the short cannula 26, as shown in FIG.
  • the protective cap 28, which consists of elastic material, has thereby pushed onto the short cannula 26, as shown in FIG. 3 can be seen.
  • the cannula device is prepared for spinal cord puncture.
  • the attending physician observes the Cavity 32 and recognizes by the entry of liquor in this cavity 32 that its puncture is successful. If this is the case, he pulls back the piston of the cuvette 20, then enters the liquor.
  • the free end of the short cannula 26 is closed again by the protective cap 28, after which again a second or a third cuvette can be placed in order to remove several parts of liquor.
  • Fig. 4 corresponds substantially to Fig. 3, but only the lower parts in the illustration are shown in section. The difference from Fig. 3 is that the part 8 has a lateral opening 34 which is closed by a filter 36 which allows air to escape, but when liquid wetting is allowed to enter air.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Anesthesiology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (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 un dispositif à canule pour le prélèvement de liquides rachidiens (liqueur) qui présente une mince canule spinale (2) meulée de manière à être tranchante à une extrémité libre (4) et reliée à son autre extrémité à une pièce de raccordement, la canule spinale (2) présentant directement en retrait de son extrémité libre (4) meulée de manière à être tranchante une ouverture latérale et la pièce de raccordement étant au moins en partie transparente, la pièce de raccordement présentant une canule dotée d'une extrémité non tournée vers la canule spinale (2) et munie d'une pointe et sur laquelle est disposé un capuchon de protection (28) apte à être reculé qui est perforé et reculé lorsque l'on y place une pièce de raccordement, mais qui se déplace de nouveau vers l'avant et ferme la canule lorsque l'on enlève la pièce de raccordement.
PCT/EP2008/003657 2007-07-07 2008-05-07 Dispositif à canule de prélèvement de liquides rachidiens (liqueur) WO2009006960A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007031799A DE102007031799B3 (de) 2007-07-07 2007-07-07 Kanülenvorrichtung zur Entnahme von Rückenmarksflüssigkeiten (Liquor)
DE102007031799.0 2007-07-07

Publications (1)

Publication Number Publication Date
WO2009006960A1 true WO2009006960A1 (fr) 2009-01-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/003657 WO2009006960A1 (fr) 2007-07-07 2008-05-07 Dispositif à canule de prélèvement de liquides rachidiens (liqueur)

Country Status (2)

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DE (1) DE102007031799B3 (fr)
WO (1) WO2009006960A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10772549B2 (en) 2014-10-20 2020-09-15 Greiner Bio-One Gmbh Handling device and method for the production thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20120154A1 (it) * 2012-02-06 2013-08-07 Enrico Gianluca Bergamaschi Dispositivo per anestesia spinale

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585984A (en) * 1968-04-10 1971-06-22 Parke Davis & Co Blood transfer device
US3886930A (en) * 1971-04-30 1975-06-03 Abbott Lab Blood collecting assembly
EP0619096A1 (fr) * 1993-02-22 1994-10-12 Issei Suzuki Aiquille d'échantillon de sang
US20050245885A1 (en) * 2004-05-03 2005-11-03 Leroy Brown Blood drawing device with flash detection
WO2006045132A2 (fr) * 2004-10-25 2006-05-04 Pharma Consult Ges.M.B.H. & Co Nfg Kg Procedes et dispositifs de lyophilisation, de reconstitution et d'administration d'un principe actif reconstituant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8811891U1 (de) * 1988-09-20 1988-11-24 B. Braun Melsungen Ag, 3508 Melsungen Stahlkanüle für die Spinal- und Periduralanästhesie
DE4226476C1 (fr) * 1992-08-10 1993-08-12 Hans Dr.Med. 3015 Wennigsen De Haindl
DE9405166U1 (de) * 1994-03-26 1994-05-26 Krebs, Peter, Dr., 78048 Villingen-Schwenningen Spinalkanüle mit transparentem Griffteil
DE10142450C1 (de) * 2001-08-31 2003-06-18 Aventis Behring Gmbh Vorrichtung zum Zusammenführen von Komponenten unter sterilen Bedingungen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585984A (en) * 1968-04-10 1971-06-22 Parke Davis & Co Blood transfer device
US3886930A (en) * 1971-04-30 1975-06-03 Abbott Lab Blood collecting assembly
EP0619096A1 (fr) * 1993-02-22 1994-10-12 Issei Suzuki Aiquille d'échantillon de sang
US20050245885A1 (en) * 2004-05-03 2005-11-03 Leroy Brown Blood drawing device with flash detection
WO2006045132A2 (fr) * 2004-10-25 2006-05-04 Pharma Consult Ges.M.B.H. & Co Nfg Kg Procedes et dispositifs de lyophilisation, de reconstitution et d'administration d'un principe actif reconstituant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10772549B2 (en) 2014-10-20 2020-09-15 Greiner Bio-One Gmbh Handling device and method for the production thereof

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Publication number Publication date
DE102007031799B3 (de) 2008-10-16

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