WO1989011883A1 - Automatic aspiration and/or injection device for medical purposes - Google Patents

Automatic aspiration and/or injection device for medical purposes Download PDF

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Publication number
WO1989011883A1
WO1989011883A1 PCT/EP1989/000636 EP8900636W WO8911883A1 WO 1989011883 A1 WO1989011883 A1 WO 1989011883A1 EP 8900636 W EP8900636 W EP 8900636W WO 8911883 A1 WO8911883 A1 WO 8911883A1
Authority
WO
WIPO (PCT)
Prior art keywords
syringe
block
piston
displaceable
drive
Prior art date
Application number
PCT/EP1989/000636
Other languages
German (de)
French (fr)
Inventor
Massimo Dell'orti
Marco Bassi
Original Assignee
Dell Orti Massimo
Marco Bassi
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 Dell Orti Massimo, Marco Bassi filed Critical Dell Orti Massimo
Publication of WO1989011883A1 publication Critical patent/WO1989011883A1/en

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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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • A61M5/14546—Front-loading type injectors
    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/64—Containers with integrated suction means
    • A61M1/67—Containers incorporating a piston-type member to create suction, e.g. syringes
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • A61M5/1456—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir

Definitions

  • the invention relates to a device for automatic agoaspiration, especially of liquids and / or biological tissue materials.
  • the invention has for its object to provide a device for automatic agoaspiration, with which the aspiration and / or the injection of biological and / or phar acological substances can be carried out easily and accurately without the executor directly or indirectly spraying or containers must take in hand.
  • a head piece with a fixed block for connection to the body of a syringe and with a displaceable block for connection to the plunger of the syringe, by a drive for the controlled translational displacement of the displaceable block and by a on the syringe attached elastic tubular element with a needle.
  • a doctor can, for example, undertake agoaspiration without having to manually operate the plunger of a syringe.
  • the doctor performing the examination has only that Needle in hand, which is arranged at the front end of a hose-shaped element, which is attached to the housing or cylinder of the syringe.
  • the doctor can then concentrate on the removal, using both hands to guide the needle to the area from which fluid or tissue samples are to be taken.
  • the device according to the invention can be used for the agoaspiration of the breast, thyroid glands or lymphatic vessels.
  • it can be used in explorative Toracentesis, in explorative Paracentesis, in Explorative Amniocentesis, in the aspiration of ovocytes and in any other situation in which small amounts of biological fluids are withdrawn in order to analyze them.
  • Organic cavities can also be rinsed with the device or tissue material removed by agoaspiration.
  • the fixed block has a profile on which the body of the syringe can be anchored.
  • the displaceable block is formed with a profile into which the end of the piston can be inserted, so that the piston is displaced together with the displaceable block.
  • the fixed block is preferably connected to a housing or carrier or the like via slide rails.
  • the displaceable block is arranged in the slide rails, so that an exact guidance of the displaceable block is possible.
  • the drive for the displacement of the piston consists of a toothed rack which is articulated on the displaceable block.
  • the rack meshes with a pinion that is driven by a direct current.
  • the DC motor can, for example operated by a doctor performing an examination via a foot switch.
  • end contacts are provided on the rack, which interact with microswitches in order to regulate and limit the displacement of the displaceable block.
  • the drive consists of a reversible oil-hydraulic piston with two gears and oil-hydraulic end valves with pressure relief.
  • Fig. 1 shows schematically a device for the
  • FIG. 2 is an electrical schematic for driving the
  • the device shown in Fig. 1 for the automatic agoaspiration in particular of liquids and / or biological tissue arterial consists of a head piece 1, which is housed in a suitable housing.
  • the head piece 1 has a fixed block, on which a profile for the use and the holding of the body 4 of a syringe 3 is formed.
  • the fixed block 2 is attached at one end to stationary guide rails 5, in which a movable block 6 is slidably arranged.
  • the block 6 has a profile 7 which is complementary to the end of a piston 8 which is displaceable in the body 4 of the syringe.
  • the piston is connected to the displaceable block 6 via the profile 7.
  • the displaceable block 6 can be displaced in opposite directions by means of a drive.
  • the drive consists of a toothed rack 10 which is articulated on the block 6 and meshes with a pinion 11 which is driven in rotation by a direct current motor 12.
  • End contacts which cooperate with microswitches 14 and 15 are arranged on the rack 10, and the displacement of the movable body 6 has a limited effect via the end contacts and the microswitches.
  • the end contacts on the rack can be adjusted.
  • a hose 20 is connected to the housing or cylinder 4 of the syringe, and a needle 21 is provided at the free end thereof.
  • the needle is the only part that a doctor who takes an examination or a tissue sample takes in order to carry out the agoaspiration.
  • the device shown in FIG. 1 is driven electrically. This is done by means of a transformer 30, which feeds a rectifier 31, to which the drive switches 32 and 33 are in turn connected.
  • the drive switches 32 and 33 interact with limit microswitches and with counters 16 and 17 for energizing the relay 18 and 19 in order to enable the desired displacement of the piston 8 of the syringe via the movable block 6.
  • the counters 16 and 17 control the drive of the direct current motor 12, which is connected to a unit 40, which in turn is connected to a speed switch 41.
  • the drive of the movable block can be operated via a double action ⁇ lhydraulic pistons with two gears and ⁇ lhydraulic end valves with relief valves are designed.
  • the electrical group is replaced by an oil-hydraulic control unit, while the electrical control buttons are replaced by ⁇ l-hydraulic control buttons.
  • an examining doctor or a doctor taking a tissue sample is given the option of performing only manipulations with the needle. This allows the doctor to concentrate fully on scanning the area to be examined and guiding the needle. All other necessary operations are carried out automatically by the device, which enables a higher precision and a higher examination speed.

Abstract

A device for automatic aspiration and/or injection of liquids and/or biological tissue materials consists of a head part (1), on which is arranged a fixed block (2) on which the body (4) of a syringe (3) is mounted. A sliding block (6) is also provided, which can be linked with the piston (8) of the syringe. Said slidable block (6) can for example be moved by means of a cogwheel mechanism or by means of an oil-hydraulic mechanism. A small flexible tube (20) with a needle (21) on its free extremity is provided on the body (4) of the syringe. During agoaspiration, the mechanism making the piston (8) of the syringe slide can for example be actuated by means of a pedal switch.

Description

Vorrichtung für die automatische AgoaspirationAutomatic agoaspiration device
Die Erfindung betrifft eine Vorrichtung zur automatischen Agoaspiration, speziell von Flüssigkeiten und/oder biologischen Gewebsmaterialien.The invention relates to a device for automatic agoaspiration, especially of liquids and / or biological tissue materials.
Die Aspiration von Flüssigkeiten und/oder von biologischen Gewebsmaterialien ist eine nützliche Methode, die vom Aus¬ führenden sehr große Sensibilität und fachmännisches Können erfordert, damit er genau in dem Bereich eingreifen kann, in dem die Entnahme ausgeführt werden muß. Mit den gegenwärtigen bekannten Techniken wird allein durch die Tatsache, eine einfache Spritze halten zu müssen, der Tastsinn des Ausführenden ziemlich eingeschränkt mit dem schwerwiegenden Nachteil, daß eine korrekte Aspiration kaum möglich ist.The aspiration of liquids and / or of biological tissue materials is a useful method, which requires the operator to be very sensitive and skilled in order to be able to intervene exactly in the area in which the removal has to be carried out. With the currently known techniques, simply by having to hold a simple syringe, the sense of touch of the operator is rather limited, with the serious disadvantage that correct aspiration is hardly possible.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung für die automatische Agoaspiration zu schaffen, mit welcher die Aspiration und/oder die Injektion von biologischen und/oder phar akologisehen Substanzen leicht und genau ausgeführt werden können, ohne daß der Auszuführende direkt oder indirekt Spritzen oder Behälter in die Hand nehmen muß.The invention has for its object to provide a device for automatic agoaspiration, with which the aspiration and / or the injection of biological and / or phar acological substances can be carried out easily and accurately without the executor directly or indirectly spraying or containers must take in hand.
Diese Aufgabe wird erfindungsgemäß gelöst durch ein Kopfstück mit einem feststehenden Block für die Verbindung mit dem Körper einer Spritze und mit einem verschiebbaren Block für die Verbindung mit dem Kolben der Spritze, durch einen Antrieb für die gesteuerte Translationsverschiebung des verschiebbaren Blockes und durch ein an der Spritze befestigtes elastisches schlauchförmiges Element mit einer Nadel.This object is achieved according to the invention by a head piece with a fixed block for connection to the body of a syringe and with a displaceable block for connection to the plunger of the syringe, by a drive for the controlled translational displacement of the displaceable block and by a on the syringe attached elastic tubular element with a needle.
Mit Hilfe der erfindungsgemäßen Vorrichtung kann beispielsweise ein Arzt eine Agoaspiration vornehmen, ohne daß er dazu den Kolben einer Spritze von Hand betätigen muß. Der die Untersuchung durchführende Arzt hat lediglich die Nadel in der Hand, die am vorderen Ende eines schlauchför igen Elementes angeordnet ist, das an dem Gehäuse oder Zylinder der Spritze befestigt ist. Der Arzt kann sich dann auf die Entnahme konzentrieren, wobei er die Nadel beidhändig an den Bereich führen kann, von dem Flüssigkeits- oder Gewebeproben entnommen werden sollen.With the aid of the device according to the invention, a doctor can, for example, undertake agoaspiration without having to manually operate the plunger of a syringe. The doctor performing the examination has only that Needle in hand, which is arranged at the front end of a hose-shaped element, which is attached to the housing or cylinder of the syringe. The doctor can then concentrate on the removal, using both hands to guide the needle to the area from which fluid or tissue samples are to be taken.
Die erfindungsgemäße Vorrichtung kann für die Agoaspiration von Brust, Schildrüsen oder Lymphgefäßen verwendet werden. Darüberhinaus kann es Anwendung finden in der explorativen Torazentese, in der explorativen Parazentese, der explorativen Amniozentese, bei der Aspiration von Ovozyten und in jeder anderen beliebigen Situation, in der geringe Mengen biologischer Flüssigkeiten entnommen werden, um diese zu analysieren. Ferner können mit der Vorrichtung organische Hohlräume gespült oder Gewebsmaterial durch Agoaspiration entnommen werden.The device according to the invention can be used for the agoaspiration of the breast, thyroid glands or lymphatic vessels. In addition, it can be used in explorative Toracentesis, in explorative Paracentesis, in Explorative Amniocentesis, in the aspiration of ovocytes and in any other situation in which small amounts of biological fluids are withdrawn in order to analyze them. Organic cavities can also be rinsed with the device or tissue material removed by agoaspiration.
Gemäß einer bevorzugten Ausführungsform weist der feststehende Block ein Profil auf, an welchem der Körper der Spritze verankert werden kann. Der verschiebbare Block ist mit einem Profil ausgebildet, in welches das Ende des Kolbens eingesetzt werden kann, so daß der Kolben zusammen mit dem verschiebbaren Block verschoben wird.According to a preferred embodiment, the fixed block has a profile on which the body of the syringe can be anchored. The displaceable block is formed with a profile into which the end of the piston can be inserted, so that the piston is displaced together with the displaceable block.
Vorzugsweise ist der feststehende Block über Gleitschienen an einem Gehäuse oder Träger oder dgl. verbunden. In den Gleitschienen ist der verschiebbare Block angeordnet, so daß eine exakte Führung des verschiebbaren Blockes möglich ist.The fixed block is preferably connected to a housing or carrier or the like via slide rails. The displaceable block is arranged in the slide rails, so that an exact guidance of the displaceable block is possible.
Gemäß einer bevorzugten Ausführungsform besteht der Antrieb für die Verschiebung des Kolbens aus einer Zahnstange, die an dem verschiebbaren Block angelenkt ist. Die Zahnstange kämmt mit einem Ritzel, das von einem Gleichstrom angetrieben wird. Der Gleichstrommotor kann beispielsweise über einen Fußschalter von dem eine Untersuchung durchführenden Arzt betätigt werden.According to a preferred embodiment, the drive for the displacement of the piston consists of a toothed rack which is articulated on the displaceable block. The rack meshes with a pinion that is driven by a direct current. The DC motor can, for example operated by a doctor performing an examination via a foot switch.
In Weiterbildung der Erfindung sind an der Zahnstange Endkontakte vorgesehen, die mit Mikroschaltern zusammenwirken, um die Verschiebung des verschiebbaren Blockes zu regeln und zu begrenzen.In a further development of the invention, end contacts are provided on the rack, which interact with microswitches in order to regulate and limit the displacement of the displaceable block.
Gemäß einer weiteren bevorzugten Ausführungsform besteht der Antrieb aus einem umsteuerbaren δlhydraulischen Kolben mit zwei Gängen und ölhydraulischen Endventilen mit Druckent¬ lastungen.According to a further preferred embodiment, the drive consists of a reversible oil-hydraulic piston with two gears and oil-hydraulic end valves with pressure relief.
Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. Es zeigtEmbodiments of the invention are explained below with reference to the drawing. It shows
Fig. 1 schematisch eine Vorrichtung für dieFig. 1 shows schematically a device for the
Agoaspiration und Fig. 2 eine elektrisches Schema zum Antrieb derAgoaspiration and Fig. 2 is an electrical schematic for driving the
Vorrichtung nach Fig. 1.1.
Die in Fig. 1 gezeigte Vorrichtung für die automatische Agoaspiration insbesondere von Flüssigkeiten und/oder biologischen Gewebs aterialen besteht aus einem Kopfstück 1, welches in einem geeignetem Gehäuse untergebracht ist. Das Kopfstück 1 weist einen feststehenden Block auf, an dem ein Profil für den Einsatz und die Halterung des Körpers 4 einer Spritze 3 ausgebildet ist. Der feststehende Block 2 ist mit einem Ende an stationären Führungsschienen 5 befestigt, in welchen verschiebbar ein beweglicher Block 6 angeordnet ist. Der Block 6 weist ein Profil 7 auf, das komplementär ist zu dem Ende eines Kolbens 8, der in dem Körper 4 der Spritze verschiebbar ist. über das Profil 7 ist der Kolben mit dem verschiebbaren Block 6 verbunden. Der verschiebbare Block 6 ist mit Hilfe eines Antriebs in entgegengesetzten Richtungen verschiebbar. Der Antrieb besteht bei dem in Fig. 1 gezeigten Ausführungsbeispiel aus einer Zahnstange 10, die an dem Block 6 angelenkt ist und mit einem Ritzel 11 kämmt, das von einem Gleichstrommotor 12 drehangetrieben wird. An der Zahnstange 10 sind Endkontakt angeordnet, die mit Mikroschaltern 14 und 15 zusammenwirken, über die Endkontakte und die Mikroschalter wirkt die Ver¬ schiebung des beweglichen Körpers 6 begrenzt. Je nach Länge der Spritze können die Endkontakte an der Zahnstange ein¬ gestellt werden.The device shown in Fig. 1 for the automatic agoaspiration in particular of liquids and / or biological tissue arterial consists of a head piece 1, which is housed in a suitable housing. The head piece 1 has a fixed block, on which a profile for the use and the holding of the body 4 of a syringe 3 is formed. The fixed block 2 is attached at one end to stationary guide rails 5, in which a movable block 6 is slidably arranged. The block 6 has a profile 7 which is complementary to the end of a piston 8 which is displaceable in the body 4 of the syringe. The piston is connected to the displaceable block 6 via the profile 7. The displaceable block 6 can be displaced in opposite directions by means of a drive. In the exemplary embodiment shown in FIG. 1, the drive consists of a toothed rack 10 which is articulated on the block 6 and meshes with a pinion 11 which is driven in rotation by a direct current motor 12. End contacts which cooperate with microswitches 14 and 15 are arranged on the rack 10, and the displacement of the movable body 6 has a limited effect via the end contacts and the microswitches. Depending on the length of the syringe, the end contacts on the rack can be adjusted.
An dem Gehäuse oder Zylinder 4 der Spritze ist ein Schlauch 20 angeschlossen, an dessen freiem Ende eine Nadel 21 vor¬ gesehen ist. Die Nadel ist das einzige Teil, das ein eine Untersuchung oder eine Gewebeprobe entnehmender Arzt er¬ greift, um damit die Agoaspiration durchzuführen.A hose 20 is connected to the housing or cylinder 4 of the syringe, and a needle 21 is provided at the free end thereof. The needle is the only part that a doctor who takes an examination or a tissue sample takes in order to carry out the agoaspiration.
Wie aus Fig. 2 ersichtlich ist, wird die in Fig. 1 gezeigte Vorrichtung elektrisch angetrieben. Dies geschieht mittels eines Transformators 30, der einen Gleichrichter 31 speist, an dem wiederum die Antriebsschalter 32 und 33 angeschlossen sind. Die Antriebsschalter 32 und 33 wirken mit Endmikro¬ schaltern und mit Zählern 16 bzw. 17 zur Erregung des Relais 18 und 19 zusammen, um die gewünschte Verschiebung des Kolbens 8 der Spritze über den beweglichen Block 6 zu ermöglichen.As can be seen from FIG. 2, the device shown in FIG. 1 is driven electrically. This is done by means of a transformer 30, which feeds a rectifier 31, to which the drive switches 32 and 33 are in turn connected. The drive switches 32 and 33 interact with limit microswitches and with counters 16 and 17 for energizing the relay 18 and 19 in order to enable the desired displacement of the piston 8 of the syringe via the movable block 6.
Die Zähler 16 und 17 kontrollieren den Antrieb des Gleich¬ strommotors 12, der an ein Aggregat 40 angeschlossen ist, das seinerseits wiederum mit einem Geschwindigkeitsschalter 41 verbunden ist.The counters 16 and 17 control the drive of the direct current motor 12, which is connected to a unit 40, which in turn is connected to a speed switch 41.
Gemäß einer anderen Ausführungsform kann der Antrieb des beweglichen Blockes über einen doppelbeaufschlagbaren δlhydraulischen Kolben mit zwei Gängen und δlhydraulischen Endventilen mit Entlastungsventilen ausgebildet werden. Die elektrische Gruppe wird in diesem Fall durch eine ölhydrau- lische Steuereinheit ersetzt, während die elektrischen Schaltknöpfe durch δlhydraulische Schaltknöpfe ersetzt werden.According to another embodiment, the drive of the movable block can be operated via a double action δlhydraulic pistons with two gears and δlhydraulic end valves with relief valves are designed. In this case, the electrical group is replaced by an oil-hydraulic control unit, while the electrical control buttons are replaced by δl-hydraulic control buttons.
Mit der Vorrichtung wird einem untersuchenden oder eine Gewebeprobe entnehmenden Arzt die Möglichkeit gegeben, nur Handhabungen mit der Nadel durchzuführen. Damit kann sich der Arzt vollständig auf das Abtasten der zu untersuchenden Stelle und die Führung der Nadel konzentrieren. Alle anderen erforderlichen Vorgänge werden automatisch von der Vorrichtung durchgeführt, was eine höhere Präzision und eine höhere Untersuchungsgeschwindigkeit ermöglicht. With the device, an examining doctor or a doctor taking a tissue sample is given the option of performing only manipulations with the needle. This allows the doctor to concentrate fully on scanning the area to be examined and guiding the needle. All other necessary operations are carried out automatically by the device, which enables a higher precision and a higher examination speed.

Claims

Vorrichtung für die automatische AgoaspirationAnsprüche Device for automatic ago-aspiration claims
1. Vorrichtung für die automatische Agoaspiration speziell von Flüssigkeiten und/oder biologischen Gewebsmateria¬ lien, g e k e n n z e i c h n e t durch ein Kopfstück (1) mit einem feststehenden Block (2) für die Verbindung mit dem Körper (4) einer Spritze (3) und mit einem verschiebbaren Block (6) für die Verbindung mit dem Kolben (8) der Spritze (3), durch einen Antrieb (10 - 15) für die gesteuerte Translationsverschiebung des verschiebbaren Blockes (6) und durch ein an der Spritze (3) befestigtes elastisches schlauchförmiges Element (20) mit einer Nadel (21).1. Device for the automatic agoaspiration especially of liquids and / or biological tissue materials, characterized by a head piece (1) with a fixed block (2) for the connection with the Body (4) of a syringe (3) and with a displaceable block (6) for connection to the plunger (8) of the syringe (3), by a drive (10 - 15) for the controlled translation of the displaceable block (6) and by an elastic tubular element (20) with a needle (21) attached to the syringe (3).
2. Vorrichtung nach Anspruch 1, dadurch g e k e n n ¬ z e i c h n e t , daß der feststehende Block (2) mit einem Profil für die Verbindung mit dem Körper (4) der Spritze und der verschiebbare Block (6) mit einem Profil (7) für den Eingriff des Kolbens der Spritze ausgebildet ist.2. Device according to claim 1, characterized in that the fixed block (2) with a profile for connection to the body (4) of the syringe and the displaceable block (6) with a profile (7) for the engagement of the Piston of the syringe is formed.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch g e ¬ k e n n z e i c h n e t , daß der feststehende Block (2) über Gleitschienen (5) für den verschiebbaren Block (6) mit einem Träger oder Gehäuse verbunden ist.3. Apparatus according to claim 1 or 2, characterized in that the fixed block (2) is connected to a carrier or housing via slide rails (5) for the displaceable block (6).
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch g e k e n n z e i c h n e t , daß der Antrieb für die Verschiebung des Kolbens der Spritze (3) aus einer Zahnstange (10) besteht, die mit dem verschiebbaren Block (6) verbunden ist und mit einem Ritzel (11) kämmt, das von einem Gleichstrommotor (12) angetrieben wird.4. Device according to one of claims 1 to 3, characterized in that the drive for the displacement of the piston of the syringe (3) consists of a rack (10) which is connected to the displaceable block (6) and with a pinion ( 11) combs, which is driven by a DC motor (12).
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch g e k e n n z e i c h n e t , daß auf der Zahnstange (10) Endkontakte vorgesehen sind, die mit Mikroschaltern (14, 15) zusammenwirken, um die Verschiebung des ver¬ schiebbaren Blockes (6) zu regeln.5. Device according to one of claims 1 to 4, characterized in that end contacts are provided on the rack (10) which cooperate with microswitches (14, 15) in order to regulate the displacement of the displaceable block (6).
6. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch g e k e n n z e i c h n e t , daß der Antrieb aus einem ölhydraulischen, doppeltbeaufschlagbaren Kolben mit zwei Gängen mit δlhydraulischen Endventilen mit Entlastungs¬ ventil besteht. 6. Device according to one of claims 1 to 3, characterized g e k e n n z e i c h n e t that the drive consists of an oil-hydraulic, double-action piston with two gears with δlhydraulic end valves with relief valve.
PCT/EP1989/000636 1988-06-09 1989-06-06 Automatic aspiration and/or injection device for medical purposes WO1989011883A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20922A/88 1988-06-09
IT20922/88A IT1217830B (en) 1988-06-09 1988-06-09 EQUIPMENT PARTICULARLY DESIGNED FOR THE AUTOMATIC NEEDLE EXTRACTION OF LIQUIDS AND / OR ORGANIC PARENCHIMAL MATERIALS

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WO1989011883A1 true WO1989011883A1 (en) 1989-12-14

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WO (1) WO1989011883A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994014488A1 (en) * 1992-12-24 1994-07-07 Miguel Angel Gramajo Booth Dosing apparatus producing an aspiration-impellent action applicable to phlebology and other medical applications

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841331A (en) * 1972-11-17 1974-10-15 J Wilder Suction-pump assembly for drawing body fluids
US3858581A (en) * 1973-07-02 1975-01-07 Dean Kamen Medication injection device
US4065230A (en) * 1975-01-17 1977-12-27 Hart Associates, Inc. Reciprocating infusion pump and directional adapter set for use therewith
FR2365936A7 (en) * 1976-09-27 1978-04-21 Montibus Jean Marie Pump for animal blood transfusion - has hand rack operated piston inside cylinder with warm water jacket to prevent blood cooling
GB2115495A (en) * 1981-12-21 1983-09-07 Intermedicat Gmbh Injector for medical uses having an improved automatic switch-off system
GB2140302A (en) * 1983-05-26 1984-11-28 Microsurgical Equipment Ltd An aspiration adaptor for a syringe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841331A (en) * 1972-11-17 1974-10-15 J Wilder Suction-pump assembly for drawing body fluids
US3858581A (en) * 1973-07-02 1975-01-07 Dean Kamen Medication injection device
US4065230A (en) * 1975-01-17 1977-12-27 Hart Associates, Inc. Reciprocating infusion pump and directional adapter set for use therewith
FR2365936A7 (en) * 1976-09-27 1978-04-21 Montibus Jean Marie Pump for animal blood transfusion - has hand rack operated piston inside cylinder with warm water jacket to prevent blood cooling
GB2115495A (en) * 1981-12-21 1983-09-07 Intermedicat Gmbh Injector for medical uses having an improved automatic switch-off system
GB2140302A (en) * 1983-05-26 1984-11-28 Microsurgical Equipment Ltd An aspiration adaptor for a syringe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994014488A1 (en) * 1992-12-24 1994-07-07 Miguel Angel Gramajo Booth Dosing apparatus producing an aspiration-impellent action applicable to phlebology and other medical applications

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Publication number Publication date
IT1217830B (en) 1990-03-30
IT8820922A0 (en) 1988-06-09

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