DE2903159A1 - Motor driven medical instrument with piercing needles - has needle carrier reciprocated by eccentric drive mounted on motor shaft - Google Patents

Motor driven medical instrument with piercing needles - has needle carrier reciprocated by eccentric drive mounted on motor shaft

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Publication number
DE2903159A1
DE2903159A1 DE19792903159 DE2903159A DE2903159A1 DE 2903159 A1 DE2903159 A1 DE 2903159A1 DE 19792903159 DE19792903159 DE 19792903159 DE 2903159 A DE2903159 A DE 2903159A DE 2903159 A1 DE2903159 A1 DE 2903159A1
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Germany
Prior art keywords
slide
needle
rotary member
motor
axis
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DE19792903159
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German (de)
Inventor
Georg Kirchner
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Individual
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Individual
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Priority to DE19792903159 priority Critical patent/DE2903159A1/en
Publication of DE2903159A1 publication Critical patent/DE2903159A1/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M37/00Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
    • A61M37/0076Tattooing apparatus

Abstract

The medical instrument with a set of needles which are used to pierce the skin of the patient, has a sleeve containing a slider with the head of the needle carrier at one end. The slider is reciprocated by a motor driven spindle at right angles to the direction of movement. The motor is enclosed by a housing which forms a handle. The drive spindle carries an eccentric collar with a projecting lug which engages a slot in the slider, which reciprocates the slider as the spindle rotates. Behind the slider is a return spring. The end of the slider carries an extension which projects from the end of the sleeve to act as a position indicator.

Description

Nadelapparat für medizinische Zwecke Needle apparatus for medical purposes

Die Erfindung bezieht sich auf einen Nadelapparat für medizinische Zwecke, mit in einer Hülse hin und her verschiebbarem, einen Nadelkopf tragenden, gegen die Kraft einer Antriebsfeder in eine zurückgezogene Ausl8sestellung bringbaren Nadelschieber. Nadelapparate dieser Art sind an sich bereits bekannt, beispielsweise durch die DE-PS 24 05 342. Der Nadelschieber wird dort durch Hochheben eines Betätigungsorgans gegen den Widerstand der Antriebsfeder in die Auslösestellung gebracht. Wenn letztere erreicht ist, wird er mittels eines Verrastmechanismus gehalten. Dies führt insgesamt zu einer verhältnismäßig aufwendigen Konstruktion und dementsprechenden Herstellungskosten. Es kommt noch hinzu, daß bei diesem Nadelapparat aufgrund seines Spannmechanismus keine besonders hohe Nadelungsfolge erzielbar ist. Außerdem muß dieser Apparat mit zwei Händen bedient werden.The invention relates to a needle apparatus for medical use Purposes, with a needle head that can be moved back and forth in a sleeve, can be brought into a retracted release position against the force of a drive spring Needle slide. Needle apparatus of this type are already known per se, for example by DE-PS 24 05 342. The needle slide is there by lifting an actuator brought into the release position against the resistance of the drive spring. If the latter achieved is, it is held by means of a latching mechanism. This leads to a total of a relatively complex construction and corresponding manufacturing costs. There is also the fact that this needle apparatus due to its tensioning mechanism no particularly high needling sequence can be achieved. In addition, this device must be with can be operated with two hands.

Die Aufgabe der Erfindung besteht infolgedessen darin, einen Nadelapparat für medizinische Zwecke der eingangs genannten Art zu schaffen, dessen Spann- und Auslösemechanismus einfacher gestaltet ist.The object of the invention is therefore to provide a needle apparatus to create for medical purposes of the type mentioned, its clamping and Trigger mechanism is designed simpler.

Zur Lösung dieser Aufgabe wird ein Nadelapparat gemäß dem Oberbegriff des Anspruchs 1 entsprechend dem kennzeichnenden Teil des ersten Anspruchs ausgebildet. Bei diesem Nadelapparat läßt sich der den Nadelkopf tragende Schieber mit Hilfe eines Drehglieds wenigstens in Rückhubrichtung verschieben, wobei gleichzeitig auch die Antriebsfeder gespannt wird. Bei oder evtl. auch kurz nach Erreichen der Auslösestellung kann das Drehglied vam Nadelschieber abgekuppelt werden, so daß dieser, lediglich von der Antriebsfeder beaufschlagt, seinen Arbeitshub durchführt. Das Drehglied kann erforderlichenfalls während des Arbeitshubs weitergedreht werden, so daß unmittelbar am Ende des Arbeitshubs ein abermaliges Anskuppeln des Drehglieds an den Nadelschieber ohne Verzögerung möglich ist. Hierdurch erreicht man eine relativ hohe Nadelungsfolge. Die Drehbewegung kann mit in der Technik bekannten und geläufigen Mitteln in eine lineare Bewegung umgesetzt werden, beispielsweise mit Hilfe einer Zapfen-Langlochverbindung, einer Zahnstange-Zahnrad- bzw. Teilzahnradverbindung über Exzenter u.dgl.To solve this problem, a needle apparatus according to the preamble of claim 1 according to the characterizing part of the first claim. In this needle apparatus, the slide carrying the needle head can be opened with the aid a rotary member move at least in the return stroke direction, and at the same time the mainspring is tensioned. When or possibly shortly after reaching the release position the rotary link can be uncoupled from the needle slide so that it only acted upon by the drive spring, performs its working stroke. The rotary link can be turned further during the working stroke if necessary, so that immediately at the end of the working stroke another coupling of the rotary link to the needle slide is possible without delay. This achieves a relatively high needling sequence. The rotary movement can be converted into a linear movement can be implemented, for example with the help of a mortise and tenon connection, a rack and gear or part gear connection via eccentric and the like.

Eine besonders bevorzugte Ausführungsform der Erfindung sieht vor, daß das Drehglied als Exzenter ausgebildet ist oder einen exzentrisch zur Drehachse angeordneten Mitnehmer für den Schieber aufweist, der mindestens beim Rückhub des Nadelschiebers mit einer Mitnahmefläche oder -kante des letzteren zusammenwirkt. Diese Art der Kupplung von Drehglied und Schieber zeichnet sich durch ihre besonders einfache und damit robuste sowie preiswerte Art aus. Es kommt noch hinzu, daß hierdurch sowohl das Ankuppeln als auch das Freigeben des Schiebers besonders einfach ist und insbesondere das Freigeben des Nadelschiebers sehr exakt erfolgt. Wichtig ist sowohl bei dieser als auch den anderen möglichen Ausführungen, daß der Arbeitshub des Nadelschiebers beim Erreichen der Auslösestellung nicht behindert und im Falle eines Abkuppelns das Wiederankuppeln problemlos möglich ist.A particularly preferred embodiment of the invention provides that the rotary member is designed as an eccentric or one eccentric to the axis of rotation has arranged driver for the slide, which at least during the return stroke of the Needle slide cooperates with a driving surface or edge of the latter. This type of coupling of the rotary link and slide is characterized by its special simple and therefore robust and inexpensive type. There is also the fact that because of this as well as the coupling as well as the releasing of the slide especially is simple and in particular the release of the needle slide takes place very precisely. It is important for both this and the other possible versions that the The working stroke of the needle slide is not hindered when the release position is reached and in the event of uncoupling, reconnecting is possible without any problems.

Bei einem Nadelapparat mit einem Mitnehmer wird in Weiterbildung der Erfindung vorgeschlagen, daß die Drehachse des Drehglieds etwa senkrecht zur Längsachse des Schiebers verläuft und die Mitnahmeflache durch eine der seitlichen Flanken einer Kerbe, Nut od. dgl. des Schiebers gebildet ist, die sich in Längsrichtung des Mitnehmers erstreckt.In the case of a needle apparatus with a driver, the Invention proposed that the axis of rotation of the rotary member is approximately perpendicular to the longitudinal axis of the slide and the driving surface through one of the side flanks a notch, groove or the like of the slide is formed, which extends in the longitudinal direction of the driver extends.

Die Drehachse und die Längsachse müssen sich dabei nicht notwendigerweise kreuzen, vielmehr kann die eine an der anderen seitlich vorbei gehen. Es ist ohne weiteres möglich, daß die Drehachse insgesamt seitlich am Nadelschieber vorbeigeführt ist, so daß dieser keiner besonderen Ausnehmung für die Drehachse bedarf. Die Tiefe der Kerbe oder Nut richtet sich nach dem seitlichen Abstand des Mitnehmers von der Drehachse. Die Nutbreite ist abhängig vom Durchmesser des Mitnehmers und dessen Bewegungsbahn.The axis of rotation and the longitudinal axis do not necessarily have to be cross, rather one can walk sideways past the other. It is without further possible that the axis of rotation as a whole moves laterally past the needle slide is, so that this does not require a special recess for the axis of rotation. The depth the notch or groove depends on the lateral distance of the driver from the Axis of rotation. The groove width depends the diameter of the driver and its trajectory.

Wenn der äußere Teil der Nut od. dgl. gemäß einer anderen Ausgestaltung der Erfindung verbreitert ist und die Drehachse des Drehglieds in den verbreiterten Teil wenigstens hineinragt, so erreicht man dadurch eine kompaktere Bauweise, indem man die Drehachse näher an die geometrische Achse des Schiebers heranbringen kann. Dabei ist es besonders vorteilhaft, wenn die Drehachse in den verbreiterten Teil nicht nur hineinragt, sondern diesen durchsetzt, weil dann das auf der anderen Seite überstehende Ende im Gehäuse des Nadelapparats zusätzlich noch gelagert werden kann. Dies kommt dem exakten Lauf und ggf. auch dem An- und Abkuppeln sowie der langen Lebensdauer des Nadelapparats zugute.If the outer part of the groove or the like. According to another embodiment of the invention is widened and the axis of rotation of the rotary member in the widened Part at least protrudes, a more compact design is achieved by the axis of rotation can be brought closer to the geometric axis of the slide. It is particularly advantageous if the axis of rotation is in the widened part not only protrudes into it, but penetrates it, because then it is on the other side protruding end can also be stored in the housing of the needle apparatus. This depends on the exact run and possibly also the coupling and uncoupling as well as the long one Benefit the life of the needle apparatus.

Eine andere Variante der Erfindung sieht vor, daß der Schieber im Bereich der Nut od. dgl. eine Aussparung für das Drehglied hat. Ihre Größe richtet sich nach den Abmessungen des Drehglieds und dem Hub des Schiebers, der in keiner seiner beiden Schiebeendstellungen das Drehglied berühren darf. Andererseits ermöglicht das aber eine Verkürzung des Mitnehmers und damit eine Verringerung der Belastung des letzteren.Another variant of the invention provides that the slide in Area of the groove or the like. Has a recess for the rotary member. Your size depends depending on the dimensions of the rotary member and the stroke of the slide, which is in none its two sliding end positions may touch the rotary link. On the other hand, enables but that is a shortening of the driver and thus a reduction the burden of the latter.

Der Vorteil des erfindungsgemäßen Nadelapparats kommt insbesondere dann besonders zur Geltung, wenn das Drehglied mittels eines Motors, vorzugsweise eines Niederspannungs-Elektromotors, antreibbar ist. Zum einen ist der Nadelapparat dann auf jeden Fall zur Einhandbedienung geeignet, und zum andern läßt sich dadurch die Nadelungsfolge, zumindest theoretisch, relativ hoch wählen. In der Praxis kann man jedoch über eine bestimmte Frequenz nicht hinausgehen, weil der Nadelapparat vorzugsweise nach jedem Arbeitshub an eine neue Körperstelle des Patienten gebracht wird. Dieses Verlagern von einer Körperstelle zur nächsten bestimmt bei diesem Nadelapparat demnach allein die Nadelungsfolge. Besonders vorteilhaft ist auch das völlig ermüdungsfreie Arbeiten mit diesem Nadelapparat, dessen Antriebsfeder nunmehr maschinell, d.h. mit Hilfe des Antriebsmotors, gespannt wird. Im Bedarfsfalle kann zwischen das Drehglied und den Motor noch eine Einrichtung zur Drehzahlveränderung, insbesondere ein Untersetzungsgetriebe, geschaltet werden.The advantage of the needle apparatus according to the invention comes in particular then particularly to advantage when the rotary member by means of a motor, preferably a low-voltage electric motor, can be driven. For one, there is the needle apparatus then in any case suitable for one-handed operation, and on the other hand it can be choose the needling sequence, at least theoretically, relatively high. In practice it can However, one cannot go beyond a certain frequency because of the needle apparatus preferably brought to a new part of the patient's body after each working stroke will. This shifting from one part of the body to the next is determined by this needle apparatus therefore only the needling sequence. The completely fatigue-free is also particularly advantageous Working with this needle apparatus, the mainspring of which is now mechanical, i.e. with the help of the drive motor. If necessary, between the rotary link and the motor or a device for changing the speed, in particular a reduction gear, be switched.

Eine Weiterbildung der Erfindung sieht vor, daß das Motorgehäuse als Griff ausgebildet ist und sich im wesentlichen etwa senkrecht zu dem den Schieber aufnehmenden Gehäuse erstreckt. Länge und Durchmesser des Motors sind entsprechend der Handgröße zu wählen. Sofern erforderlich, kann das Motor- oder evtl. ein Motor-Getriebe-Gehäuse an seinem Außenumfang in besonderer Weise gestaltet werden, um eine gute Griffigkeit zu erlangen.A development of the invention provides that the motor housing as Handle is formed and is substantially perpendicular to the the slide receiving housing extends. The length and diameter of the motor are accordingly the hand size to choose. If necessary, the motor housing or possibly a motor-gear housing be designed in a special way on its outer circumference to ensure a good grip to get.

Eine andere Ausgestaltung der Erfindung ist gekennzeichnet durch eine Anzeigevorrichtung für die Stellung des Schiebers, Das ist insbesondere bei motorlichem Antrieb und hoher Nadelungsfolge von Vorteil, weil dadurch ein Abheben des Nadelapparats vom Körper vor Durchführung des Arbeitshubs vermieden wird. Außerdem gibt diese Anzeigevorrichtung einen gewissen Rhytmus für das Abheben und Wiederaufsetzen des Apparats auf die Haut des Patienten.Another embodiment of the invention is characterized by a Display device for the position of the slider, this is especially with motorized Drive and high needling sequence are an advantage, because it lifts the needle apparatus is avoided by the body before the work stroke is carried out. Also there are these Display device a certain rhythm for taking off and putting the Apparatus on the patient's skin.

Eine in dieser Richtung bevorzugte Ausführungsform der Erfindung sieht vor, daß der Schieber oder ein damit verbundenes Schiebeglied zur Bildung einer Anzeigevorrichtung durch das Gehäuse nach außen hindurchgeführt ist. Zweckmäßigerweise sollte die Anordnung so getroffen sein, daß der Schieber bzw. das Schiebeglied am Ende des Arbeitshubs etwa bündig mit dem Gehäuse ist, d.h. über dieses nicht oder nur unbedeutend hinausragt. Dadurch erhält man einen besseren tiberblick über die momentane Stellung des Schiebers. In weiterer Ausbildung der Erfindung ist vorgesehen, daß zumindest das überstehende Ende des Schiebeglieds mit einer Signalfarbe, insbesondere rot, überzogen oder eingefärbt ist. Dadurch hebt es sich vom Gehäuse oder zumindest dem umgebenden Gehäuseteil besonders gut ab, insbesondere wenn das Gehäuse verchromt od. dgl. ist bzw. aus einem andersfarbigem Kunststoff besteht.A preferred embodiment of the invention in this regard sees before that the slide or an associated slide member to form a Display device is passed through the housing to the outside. Appropriately should the arrangement be made so that the slide or the slide member at the end of the working stroke is roughly flush with the housing, i.e. not or only above it protrudes insignificantly. This gives you a better overview of the current situation Position of the slide. In a further embodiment of the invention it is provided that at least the protruding end of the sliding member with a signal color, in particular is red, coated or colored. This makes it stand out from the case, or at least the surrounding housing part particularly well, especially if the housing is chrome-plated Od. The like. Is or consists of a different colored plastic.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen: Figur 1 eine teilweise als Halbschnitt ausgeführte Seitenansicht des erfindungsgemäßen Nadelapparats, Figur 2 eine teilweise abgebrochene Ansicht der Fig. 1 in Pfeilrichtung A.An exemplary embodiment of the invention is shown in the drawing. There are shown: FIG. 1 a side view of the FIG needle apparatus according to the invention, Figure 2 is a partially broken away view of the Fig. 1 in the direction of arrow A.

In einer Hülse 1, die zugleich den wesentlichen Teil des Gehäuses 2 des Nadelapparats bildet, ist ein Nadelschieber 3 mit einem Nadelkopf 4 im Sinne des Doppelpfeils 5 auf und ab verschiebbar. Der Rückhub erfolgt im Sinne des Pfeils 6 gegen die Kraft der Antriebsfeder 7. Letztere ist vorzugsweise als Schraubendruckfeder ausgebildet, und sie stützt sich mit ihrem in Fig. 1 unteren Ende an einem Außenbund des Schiebers 3, und mit ihrem oberen Ende an einem Gehäuseabsatz 8 ab. Der Arbeitshub erfolgt entgegen dem Pfeil 6.In a sleeve 1, which is also the essential part of the housing 2 of the needle apparatus is a needle slide 3 with a needle head 4 in the sense of the double arrow 5 up and down. The return stroke takes place in the direction of the arrow 6 against the force of the drive spring 7. The latter is preferably a helical compression spring formed, and it is supported with its lower end in Fig. 1 on an outer collar of the slide 3, and with its upper end on a housing shoulder 8. The working stroke occurs against arrow 6.

Der Nadelschieber 3 ist erfindungsgemäß mittels eines Drehglieds 9 wenigstens in Rückhubrichtung 6 antreibbar.According to the invention, the needle slide 3 is operated by means of a rotary member 9 drivable at least in the return stroke direction 6.

Beim Ausführungsbeispiel wird es lediglich in Richtung des Pfeils 10 gedreht. Außerdem ist dort ein Antreiben des Nadelschiebers durch das Drehglied auch nur in Rückhubrichtung 6 vorgesehen. Der Arbeitshub erfolgt e#inzig und allein mit Hilfe der Antriebsfeder 7.In the exemplary embodiment, it is only in the direction of the arrow 10 rotated. In addition, there is driving of the needle slide by the rotary member also only provided in the return stroke direction 6. The working stroke takes place entirely and alone with the help of the drive spring 7.

Das Drehglied 9 trägt einen exzentrisch zu seiner Drehachse 11 angeordneten und sich dazu im wesentlichen parallel erstreckenden, vorzugsweise stiftförmigen Mitnehmer 12.The rotary member 9 carries an eccentric to its axis of rotation 11 and extending essentially parallel to this, preferably pin-shaped Carrier 12.

Er arbeitet mit einer Mitnahmefläche 13 des Schiebers 3 zusammen. Diese ist durch die eine seitliche Flanke einer Nut 14 des Schiebers gebildet. Die Abmessungen dieser Nut richten sich nach den Bewegungsbahnen des Mitnehmers 12 und des Schiebers 3 sowie den geometrischen Abmessungen der in diesem Bereich vorhandenen Teile des Nadelapparats.It works together with a driving surface 13 of the slide 3. This is formed by one side flank of a groove 14 of the slide. the Dimensions of this groove are based on the movement paths of the driver 12 and of the slide 3 and the geometric dimensions of the existing in this area Parts of the needle apparatus.

Der äußere Teil 15 der Nut 14 ist verbreitert, um die Drehachse 11 näher an die geometrische Achse 17 des Schiebers bzw. der Hülse 1 heranbringen zu können. In Fig. 2 schneiden sich die beiden geometrischen Achsen.The outer part 15 of the groove 14 is widened about the axis of rotation 11 bring it closer to the geometric axis 17 of the slide or the sleeve 1 can. In Fig. 2, the two geometric axes intersect.

Falls man den Schieber nicht zu sehr schwächen möchte, kann man die geometrische Achse der Drehachse 11 auch links von der geometrischen Achse 17 des Schiebers anordnen. Auf jeden Fall ergibt sich hierdurch eine relativ kompakte Bauform. Das erreicht man außerdem auch noch dadurch, daß der Schieber im Bereich der Nut 14 eine Aussparung 16 für das Drehglied 9 hat. Dadurch läßt sich das Drehglied gewissermaßen ins Innere des Schiebers verlegen, und dies hat nicht nur die kompaktere Bauweise zur Folge, sondern auch eine kürzere Ausbildung und damit erhöhte Belastbarkeit des Mitnehmers 12.If you don't want to weaken the slider too much, you can use the geometric axis of the axis of rotation 11 also to the left of the geometric axis 17 of the Arrange the slide. In any case, this results in a relatively compact design. This can also be achieved by placing the slide in the area of the groove 14 has a recess 16 for the rotary member 9. As a result, the rotary member can to a certain extent lay inside the slide, and this not only has the more compact design result, but also a shorter training and thus increased resilience of the driver 12.

Das Drehglied 9 ist mittels eines rotors 18, vorzugsweise eines elektrischen Niederspannungsmotors, antreibbar.The rotary member 9 is by means of a rotor 18, preferably an electric one Low voltage motor, drivable.

Dieser kann von dem Schalter 19 ein- und ausgeschaltet werden. Zweckmäßigerweise bildet das Gehäuse des Motors 18 zugleich einen Griff 20 des Nadelapparats. Der Motor erstreckt sich senkrecht zur Hülse 1, so daß der Apparat insgesamt sehr handlich wird. Ggf. kann zwischen Motor und Drehglied 9 ein nicht dargestelltes Getriebe od. dgl.This can be switched on and off by the switch 19. Appropriately the housing of the motor 18 also forms a handle 20 of the needle apparatus. Of the Motor extends perpendicular to the sleeve 1, so that the apparatus as a whole is very handy will. If necessary, a gear (not shown) can be located between the motor and the rotary member 9 or the like

geschaltet werden. Die Ausbildung des mittleren Schieberbereichs ermöglicht des weiteren eine Verlängerung der Drehachse 11 über das Drehglied 9 hinaus. Dadurch ist es möglich, das freie Ende 21 der Drehachse 11 auch noch auf der gegenüberliegenden Seite zu lagern. Zu diesem Zweck besitzt das Gehäuse bzw. ein in ein Gewinde eines seitlichen Gehäuseansatzes 22 eingedrehtes Schraubglied 23 eine insbesondere angeformte Lagerschale 24.be switched. The formation of the middle slide area allows furthermore an extension of the axis of rotation 11 beyond the rotary member 9. Through this it is possible, the free end 21 of the axis of rotation 11 also on the opposite Store side. For this purpose, the housing or a threaded one Lateral housing extension 22 screwed-in screw member 23, in particular an integrally formed Bearing shell 24.

Der Nadelapparat besitzt eine Anzeigevorrichtung 25 für die Stellung des Schiebers 3. Zur Bildung dieser Anzeigevorrichtung ist der Schieber bzw. ein zapfenförmiger Schieberansatz 26 durch das Gehäuse 2 nach außen hindurchgeführt. Die Abmessungen sind zweckmäßigerweise so getroffen, daß die Länge des überstehenden Teils am Ende des Rückhubs etwa der Größe des Arbeitshubs entspricht.The needle apparatus has an indicator device 25 for the position of the slide 3. To form this display device, the slide or is a peg-shaped slide extension 26 passed through the housing 2 to the outside. The dimensions are expediently made in such a way that that the length of the protruding part at the end of the return stroke corresponds approximately to the size of the working stroke.

In diesem Bereich befindet sich außerdem noch eine Verdrehsicherung 27 für den Schieber 3. Diese besteht aus einem radial überstehenden Stift 28 des Schieberansatzes 26, der in einer Längsnut 29 des Gehäuseendes 13 geführt ist.There is also an anti-twist device in this area 27 for the slide 3. This consists of a radially protruding pin 28 of the Slide attachment 26 which is guided in a longitudinal groove 29 of the housing end 13.

über letzterem befindet sich eine Schraubkappe 31, welche die Verdrehsicherung schützt. Vorzugsweise ist das Gehäuse 2 des Nadelapparats verchromt, vernickelt oder in ähnlicher Weise oberflächenbehandelt, während das überstehende Ende des Ansatzes 26 mit einer Signalfarbe versehen ist oder beispielsweise aus einem signalfarbenen Kunststoffteil besteht, welches in geeigneter Weise gehalten, beispielsweise angeschraubt ist.Above the latter there is a screw cap 31, which prevents rotation protects. The housing 2 of the needle apparatus is preferably chrome-plated, nickel-plated or similarly surface treated, while the protruding end of the Approach 26 is provided with a signal color or, for example, from a signal-colored There is a plastic part which is held in a suitable manner, for example screwed on is.

Am Ende des Arbeitshubs trifft die Schulter 32 des Schiebers 3 auf einem ringförmigen Dämpfungsglied, beispielsweise einem O-Ring 33, auf, der an der Schraubhülse 34 gehalten ist. An deren Bund 35 liegt das mit einem Außenbund versehene Ende einer Schutzkappe 36 an. Diese wird vor Gebrauch des Nadelapparats in bekannter Weise abgenommen. Die Nadelungstiefe wird mit Hilfe der einschraubbaren Hülse 37 eingestellt. Die Nadeln des Nadelkopfs sind mit 38 bezeichnet. Er ist in nicht gezeigter Weise in den Schieber 3 eingeschraubt.At the end of the working stroke, the shoulder 32 of the slide 3 strikes an annular damping member, for example an O-ring 33, which is attached to the Screw sleeve 34 is held. At their collar 35 is provided with an outer collar End of a protective cap 36. This is known before using the needle apparatus Way removed. The needling depth is determined with the aid of the screw-in sleeve 37 set. The needles of the needle head are denoted by 38. It is in a manner not shown screwed into the slide 3.

Der Motor wird vorzugsweise über einen drehbaren Koaxialstecker 39 mit der Stromquelle verbunden.The motor is preferably connected via a rotatable coaxial connector 39 connected to the power source.

Claims (10)

A n s p r fi c h e Nadelapparat für medizinische Zwecke, mit in einer Hülse hin und her verschiebbarem, einen Nadelkopf tragenden, gegen die Kraft einer Antriebsfeder in eine zurückgezogene Auslösestellung bringbaren Nadelschieber, dadurch gekennzeichnet, daß der Nadelschieber (3) mittels eines Drehglieds (9) wenigstens in Rückhubrichtung (6) antreibbar ist. A n p r fi c h e needle apparatus for medical purposes, with in one Sleeve slidable back and forth, carrying a needle head, against the force of a Drive spring in a retracted release position can be brought into the needle slide, thereby characterized in that the needle slide (3) by means of a rotary member (9) at least can be driven in the return stroke direction (6). 2. Apparat nach Anspruch 1, dadurch gekennzeichnet, daß das Drehglied (9) als Exzenter ausgebildet ist oder einen exzentrisch zur Drehachse angeordneten Mitnehmer (12) für den Schieber (3) aufweist, der mindestens beim Rückhub des Schiebers mit einer Mitnahmefläche (13) oder -kante des letzteren zusammenwirkt.2. Apparatus according to claim 1, characterized in that the rotary member (9) is designed as an eccentric or an eccentric to the axis of rotation Has driver (12) for the slide (3) at least during the return stroke of the slide interacts with a driving surface (13) or edge of the latter. 3. Apparat nach Anspruch 2, mit einem Mitnehmer, dadurch gekennzeichnet, daß die Drehachse (11) des Drehglieds (9) etwa senkrecht zur Längsachse (1s) des Schiebers (3) verläuft und die Mitnahmefläche (13) durch eine der seitlichen Flanken einer Kerbe, Nut (14) od. dgl. des Schiebers gebildet ist, die sich in Längsrichtung des Mitnehmers erstreckt.3. Apparatus according to claim 2, with a driver, characterized in that that the axis of rotation (11) of the rotary member (9) is approximately perpendicular to the longitudinal axis (1s) of the Slide (3) runs and the driving surface (13) through one of the side flanks a notch, groove (14) od. The like. The slide is formed, which extends in the longitudinal direction of the driver extends. 4. Apparat nach Anspruch 3, dadurch gekennzeichnet, daß der äußere Teil (15) der Nut tal4) od. dgl. verbreitert ist und die Drehachse (11) des Drehglieds (9) in den verbreiterten Teil wenigstens hineinragt.4. Apparatus according to claim 3, characterized in that the outer Part (15) of the groove tal4) or the like. Is widened and the axis of rotation (11) of the rotary member (9) at least protrudes into the widened part. 5. Apparat nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Schieber (3) im Bereich der Nut (14, 15) od. dgl.5. Apparatus according to claim 3 or 4, characterized in that the Slide (3) in the area of the groove (14, 15) or the like. eine Aussparung (16) für das Drehglied hat.has a recess (16) for the rotary member. 6. Apparat nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Drehglied (9) mittels eines Motors (18), vorzugsweise Niederspannungs-Elektromotors, antreibbar ist.6. Apparatus according to one or more of the preceding claims, characterized in that the rotary member (9) by means of a motor (18), preferably Low voltage electric motor, is drivable. 7. Apparat nach Anspruch 6, dadurch gekennzeichnet, daß das Motorgehäuse als Griff (19) ausgebildet ist und sich im wesentlichen etwa senkrecht zu dem den Schieber (3) aufnehmenden Gehäuse (2) erstreckt.7. Apparatus according to claim 6, characterized in that the motor housing is designed as a handle (19) and is substantially approximately perpendicular to the the Slide (3) receiving housing (2) extends. 8. Apparat nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch eine Anzeigevorrichtung (25) für die Stellung des Schiebers (3).8. Apparatus according to one or more of the preceding claims, characterized by a display device (25) for the position of the slide (3). 9. Apparat nach Anspruch 8, dadurch gekennzeichnet, daß der Schieber (3) oder ein damit verbundenes Schiebeglied (26) zur Bildung der Anzeigevorrichtung (25) durch das Gehäuse (2) nach außen hindurchgeführt ist.9. Apparatus according to claim 8, characterized in that the slide (3) or a sliding member (26) connected to it to form the display device (25) is passed through the housing (2) to the outside. 10. Apparat nach Anspruch 9, dadurch gekennzeichnet, daß zumindest das überstehende Ende des Schiebeglieds (26) mit einer Signalfarbe, insbesondere rot, überzogen oder eingefärbt ist.10. Apparatus according to claim 9, characterized in that at least the protruding end of the sliding member (26) with a signal color, in particular is red, coated or colored.
DE19792903159 1979-01-27 1979-01-27 Motor driven medical instrument with piercing needles - has needle carrier reciprocated by eccentric drive mounted on motor shaft Withdrawn DE2903159A1 (en)

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