FR2919193A1 - Positive pressure equipment for use as mini-syringe, has cannula comprising end combined with interior inversion of conical section of passive element in syringe for permitting user to avoid purging of equipment during its operation - Google Patents

Positive pressure equipment for use as mini-syringe, has cannula comprising end combined with interior inversion of conical section of passive element in syringe for permitting user to avoid purging of equipment during its operation Download PDF

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FR2919193A1
FR2919193A1 FR0705434A FR0705434A FR2919193A1 FR 2919193 A1 FR2919193 A1 FR 2919193A1 FR 0705434 A FR0705434 A FR 0705434A FR 0705434 A FR0705434 A FR 0705434A FR 2919193 A1 FR2919193 A1 FR 2919193A1
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syringe
piston
cannula
mini
needle
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FR2919193B1 (en
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Michel Camus
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M2CT SARL
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M2CT SARL
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    • 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
    • A61M5/1454—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons spring-actuated, e.g. by a clockwork
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3123—Details having air entrapping or venting means, e.g. purging channels in pistons
    • 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
    • A61M2209/00—Ancillary equipment
    • A61M2209/04—Tools for specific apparatus
    • A61M2209/045—Tools for specific apparatus for filling, e.g. for filling reservoirs
    • 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
    • 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
    • A61M39/0208—Subcutaneous access sites for injecting or removing fluids
    • 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
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • 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
    • A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (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

The equipment has a thrust piston (a) animated by a spring. A limited rate cannula (c) compensates thrust speed for permitting retraction of a chemotherapy needle. The cannula has an end combined with an interior inversion of a conical section (b) of a passive element of the syringe for permitting a user to avoid the purge of the equipment during its operation. An interior volume of the syringe is slightly greater than aspirated volume during the retraction of the needle by a catheter. The end of the cannula serves as stop for descending and closing the piston at the end of thrust.

Description

On connaît depuis quelques temps déjà les problèmes que posent le retraitFor some time now the problems of withdrawal have been known

d'une aiguille de Chimiothérapie à savoir le phénomène d'aspiration à l'intérieur du catheter de distribution relié à la chambre implantée. En effet, le volume de l'aiguille à l'intérieur de la chambre, disparaît et est compensé par un phénomène d'aspiration à la partie terminale du cathéter qui lui est raccordé ; ce volume est encore artificiellement accru car l'aiguille à biseau de Huber, qui est une aiguille angulée,{a Figure 11 a tendance, de par sa forme, à provoquer une déformation de la membrane de la chambre implantée .lors de son retrait. , {b Figure 11 Ces deux valeurs ajoutées, sont donc compensées par une aspiration à l'extrémité du cathéter qui lui est raccordé {c Figure 11. Or le liquide ainsi absorbé, en réalité du sang, a tendance à se coaguler à l'intérieur du cathéter pendant le temps ou celui-ci, toujours en place n'est pas utilisé pour une autre perfusion.  a chemotherapy needle namely the suction phenomenon inside the distribution catheter connected to the implanted chamber. In fact, the volume of the needle inside the chamber disappears and is compensated by a suction phenomenon at the end portion of the catheter connected to it; this volume is still artificially increased because the Huber bevel needle, which is an angled needle, has a tendency, by its shape, to cause deformation of the membrane of the implanted chamber during its removal. These two added values are therefore compensated by a suction at the end of the catheter connected to it (Figure 11). The liquid thus absorbed, in fact blood, has a tendency to coagulate with the catheter. inside the catheter during the time or it, still in place is not used for another infusion.

Cette coagulation peut provoquer une obturation partielle ou totale du catheter ce qui est très préjudiciable pour le patient.  This coagulation can cause partial or total closure of the catheter which is very detrimental to the patient.

C'est pourquoi nous avons pensé à un dispositif permettant le rinçage terminal durant le retrait de l'aiguille et non pas juste avant cette manoeuvre comme 25 le font certains matériels actuellement utilisés. Le but étant de compenser le volume total aspiré, voir de continuer quelque peu, juste après le retrait de l'aiguille, pour être certain que rien n'aura été aspiré pendant le laps de temps que dure la manoeuvre de retrait.. 30 Pour ce faire nous proposons de protéger la réalisation suivante ;Il s'agit d'un matériel d'un volume efficace utile au moins comparable voire légèrement supérieur, à celui du volume total aspiré détaillé ci-dessus qui serait composé d'un cylindre de diamètre approprié et d'un volume utile au moins nécessaire à obtenir le résultat 35 escompté complété par un piston propre à assurer l'étanchéité du dispositif. une mini seringue en quelque sorte. { Figure 2} Ce piston serait pourvu au moins d'un dispositif de repère visible de l'extérieur lorsque l'ensemble de remplissage aurait atteint son volume maximum. {a 40 Figure 2} Il s'agira donc d'un matériel tel une mini seringue, dont le volume intérieur utilisable sera légèrement supérieur au volume généralement aspiré , lors du retrait de l'aiguille, par le cathéter implanté relié à une chambre de chimiothérapie  This is why we thought of a device allowing the final rinsing during the removal of the needle and not just before this maneuver as do some currently used equipment. The goal is to compensate for the total volume aspirated, see continue somewhat just after the removal of the needle, to be sure that nothing has been sucked during the period of time the withdrawal maneuver. this we propose to protect the following realization: This is a material with an effective volume at least comparable or even slightly higher than that of the total aspirated volume detailed above which would be composed of a diameter cylinder and a useful volume at least necessary to obtain the expected result supplemented by a piston adapted to seal the device. a mini syringe somehow. {Figure 2} This piston would be provided with at least one sighting device visible from the outside when the filling assembly reached its maximum volume. {a 40 Figure 2} It will therefore be a material such as a mini syringe, whose usable internal volume will be slightly greater than the volume generally aspirated, during the withdrawal of the needle, by the implanted catheter connected to a chamber of chemotherapy

45 La vidange du dispositif serait obtenue par un dispositif tel un ressort, {b Figure 2} placé à l'intérieur du dispositif, et dont la poussée longitudinale,une fois compressé, serait calculée pour permettre le déplacement du piston de manière autonome,.tout en expulsant le liquide contenu Toutefois, le temps nécessaire au praticien pour effectuer la manoeuvre de retrait de l'aiguille, est quantifié généralement par un temps de plusieurs secondes.  The emptying of the device would be obtained by a device such as a spring, {b Figure 2} placed inside the device, and whose longitudinal thrust, once compressed, would be calculated to allow the movement of the piston autonomously. while expelling the contained liquid However, the time required for the practitioner to perform the withdrawal maneuver of the needle, is generally quantified by a time of several seconds.

Aussi, afin que cette vidange du dispositif ne soit pas anarchique, la régulation de l'ensemble de la manoeuvre sera donc contrôlée par une canule d'un diamètre approprié qui, suivant la poussée du ressort du piston, permettra donc un écoulement dans le catheter d'au moins la quantité de liquide nécessaire durant au moins le temps estimé de la manoeuvre C'est donc un rapport : vitesse de retour du piston , donc poussée du liquide, vers le catheter, et débit, contrôlé par le diamètre interne de la canule du dispositif, qui permettra d'obtenir une vidange de la mini seringue durant au minimum tout le temps nécessaire au retrait de l'aiguille. Et c'est donc par cette vidange contrôlée de la mini seringue, connectée au cathéter relié à l'aiguille de Huber, que sera obtenue la purge, sans aspiration finale, du cathéter relié à la chambre implantable. 20 Donc les caractéristiques techniques du dispositif de poussée du piston seront intimement liées au débit de la canule raccordée au cylindre de façon à permettre à l'utilisatrice d'avoir le temps nécessaire de pratiquer les gestes complets à effectuer pour le retrait de l'aiguille de chimiothérapie 25 Ce qui signifie également que le diamètre intérieur de la canule sera calculé en fonction de la pression exercée par le dispositif de poussée du piston pour permettre à l'infirmière d'avoir le temps de pratiquer les gestes complets à effectuer pour le retrait de l'aiguille de chimiothérapie sans aspiration terminale.  Also, so that this emptying of the device is not uncontrolled, the regulation of the entire maneuver will be controlled by a cannula of a suitable diameter which, depending on the thrust of the spring of the piston, thus allow flow in the catheter at least the amount of liquid required during at least the estimated time of the maneuvering It is therefore a ratio: return speed of the piston, therefore thrust of the liquid, to the catheter, and flow, controlled by the internal diameter of the cannula of the device, which will provide a drain of the mini syringe for at least the entire time necessary to remove the needle. And it is therefore through this controlled emptying of the mini syringe, connected to the catheter connected to the Huber needle, that the purging, without final aspiration, of the catheter connected to the implantable chamber will be obtained. Thus, the technical characteristics of the piston thrust device will be closely related to the flow of the cannula connected to the cylinder so as to allow the user to have the necessary time to perform the complete movements to be performed for the withdrawal of the needle. This also means that the inside diameter of the cannula will be calculated as a function of the pressure exerted by the piston thrust device to allow the nurse to have the time to perform the complete movements to be performed for the withdrawal. of the chemotherapy needle without terminal aspiration.

30 D'autre part, ce matériel de purge, dénommé ci après : à pression positive, pourra être relié soit à un robinet 3 voies soit à un autre dispositif manuel, voire automatique qui en permettra : son remplissage dans un premier, temps, son état inerte pendant le temps de rinçage normalement effectué du catheter, son état de purge finale effective, pendant le temps consacré au retrait de l'aiguille. 35 Toutefois, les différents gestes pratiqués par l'opératrice ne peuvent, dans le même temps être complétés par une purge d'air du matériel.  On the other hand, this purge material, hereinafter referred to as: positive pressure, may be connected either to a 3-way valve or to another manual device, or even automatic which will allow: filling it in a first, time, sound inert state during the normally performed rinsing time of the catheter, its actual final purge state, during the time spent in removing the needle. However, the various gestures practiced by the operator can not, at the same time be supplemented by an air purge of the equipment.

C'est pourquoi il nous a semblé utile de prévoir un dispositif complémentaire 40 propre à assurer le phénomène de compensation de purge en tenant compte du volume mort de la seringue au moment de son remplissage. On l'a vu précédemment, le dispositif sera rempli au moyen d'un accessoire telle la seringue pré remplie de purge préalable, dite grande seringue, du fait de son 45 volume nettement plus important, qui fera transférer une petite partie de son liquide vers le dispositif à pression positive, dite la mini seringue, en les raccordant l'une à l'autre par une pièce intermédiaire classique et leur cône de sortie habituel dit cône Luer {d Figure 2} Et c'est donc le transfert de liquide qui fera repousser le piston du15 dispositif à pression positive jusqu'au repère antérieurement cité qui apparaîtra sur la queue du piston lorsque celle-ci sera remplie {a Figure 2}  This is why it seemed useful to provide a complementary device 40 to ensure the purge compensation phenomenon taking into account the dead volume of the syringe at the time of filling. As previously seen, the device will be filled by means of an accessory such as the pre-filled pre-purge syringe, called the large syringe, because of its much larger volume, which will cause a small part of its liquid to be transferred to the positive pressure device, called the mini syringe, by connecting them to each other by a conventional intermediate piece and their usual exit cone called Luer cone {d Figure 2} And so it is the transfer of liquid that will push the plunger of the positive pressure device back to the previously cited mark that will appear on the tail of the plunger when it is filled (Figure 2).

Si elle le désire, l'infirmière, ou tout autre personnel soignant, souhaitera peut-être différer le début de cette pression positive juste après le remplissage de cette mini seringue.  If desired, the nurse, or other caregivers, may wish to delay the onset of this positive pressure immediately after filling the mini-syringe.

C'est pourquoi il est apparu intéressant de prévoir un dispositif de maintien du piston en position -dispositif rempli- qu'elle seule ne déclencherait qu'au 10 moment souhaité par elle.  This is why it has appeared interesting to provide a device for holding the piston in the position -depositive filling only trigger only at the desired moment by it.

Ce pourrait être, par exemple, une combinaison d'une position légèrement excentrée de l'orifice de guidage de la queue du piston {a Figure 3} associée à une encoche de verrouillage pratiquée dans la queue du piston. {a Figure 4} 15 Lors du glissement de la queue du piston pendant le remplissage, celui-ci se trouvera donc en présence d'une force latérale, et au passage de l'encoche devant l'épaisseur du couvercle de la mini seringue, il reprendra donc sa place centrée et les deux éléments coopérant naturellement, il ne pourra plus alors redescendre sans 20 intervention manuelle de latéralisation de la queue du piston par l'infirmière. { Figure5 } .  This could be, for example, a combination of a slightly off-center position of the piston tail guide hole (Fig. 3) associated with a locking notch in the piston shank. {a Figure 4} During the sliding of the tail of the piston during filling, it will therefore be in the presence of a lateral force, and the passage of the notch in front of the thickness of the lid of the mini syringe, it will resume its place centrally and the two elements cooperating naturally, it can not then down without manual intervention of lateralization of the tail of the piston by the nurse. {Figure5}

Cette mini seringue posséderait donc une excentration de l'orifice de guidage du piston de façon à ce que la queue du piston ait tendance à se recentrer naturellement 25 et à se verrouiller par coopération lors du passage de l'encoche au niveau du couvercle de la mini seringue, une fois celle-ci remplie car elle posséderait une encoche dans la queue du piston permettant à celle-ci d'en assurer le verrouillage donc son maintien en position une fois le dispositif rempli.  This mini-syringe would therefore have an eccentricity of the piston guide orifice so that the piston tail tends to naturally refocus and lock by cooperation during the passage of the notch at the lid of the piston. mini syringe, once it filled because it has a notch in the tail of the piston allowing the latter to ensure the locking so its holding in position once the device filled.

30 Comme à partir de cette manoeuvre, il n'est plus possible de purger le dispositif à pression positive sauf à recommencer plusieurs fois la manoeuvre en la basculant de haut en bas plusieurs fois jusqu'à capter complètement la bulle qui se sera formée au départ, il nous a paru intéressant de rechercher un moyen d'éviter cette manoeuvre, consommatrice de temps précieux pour la manipulatrice. 35 C'est pourquoi nous proposons d'une part d'inverser la conicité normalement pratiquée {b Figure 4} à l'intérieur du corps des seringues , de façon à ce que, si la mini seringue est verticalisée, la bulle se place automatiquement dans le pourtour de sa circonférence, et d'autre part, de rallonger la canule à l'intérieur du dispositif à 40 pression positive {c Figure 41de façon à ce que, le volume de la bulle formée au départ, ne puisse atteindre l'extrémité interne de la canule quelle que soit la position verticale, dans un sens ou dans l'autre , ou horizontale ou tous autres angles intermédiaires susceptibles d'amener la bulle d'air en position dite injectable dans la tubulure de transfert vers l'aiguille de huber implantée dans la chambre. 45 Il faudra donc, lors de ;la fabrication, observer le volume mort rempli d'air dans le dispositif à pression positive et positionner la canule de transfert de façon à ce que l'extrémité de celle-ci soit plus haute que le niveau supérieur atteint par la bulle à l'intérieur du dispositif. dans la position la plus défavorable. {d Figure 4} Ce qui revient à dire que le positionnement de l'extrémité interne de la canule sera déterminé en fonction du volume de la bulle restant dans le corps de la mini seringue quelle que soit la position de cette dernière.  As from this maneuver, it is no longer possible to purge the positive pressure device except to repeat the maneuver several times by tilting it up and down several times until it completely captures the bubble that will be formed at the beginning. It seemed interesting to us to find a way to avoid this maneuver, which consumes precious time for the manipulator. This is why we propose on the one hand to invert the conicity normally practiced {b Figure 4} inside the body of the syringes, so that, if the mini syringe is verticalized, the bubble is automatically placed circumferentially, and on the other hand, to extend the cannula within the positive pressure device (c) so that the volume of the initially formed bubble can not reach the internal end of the cannula regardless of the vertical position, in one direction or the other, or horizontal or any other intermediate angles may bring the air bubble in said injectable position in the transfer tube to the needle of huber implanted in the room. 45 During manufacturing, it is therefore necessary to observe the dead volume filled with air in the positive pressure device and to position the transfer cannula so that the end thereof is higher than the upper level. reached by the bubble inside the device. in the most unfavorable position. {d Figure 4} Which is to say that the positioning of the inner end of the cannula will be determined according to the volume of the bubble remaining in the body of the mini syringe regardless of the position of the latter.

D'autre part la conicité de l'intérieur de l'élément passif de la seringue est inversé par rapport aux seringues habituellement utilisées.  On the other hand the conicity of the interior of the passive element of the syringe is reversed compared to the syringes usually used.

De ce fait l'extrémité de la canule servira de butée propre à la descente du piston et à l'obturer complètement en fin de poussée pour éviter que l'air résiduel ne rentre accidentellement dans la tubulure reliée à l'aiguille de chimiothérapie Enfin le corps de la mini seringue sera doté d'une extrémité standard identique aux extrémités des autres seringues actuellement en service. de façon à pouvoir y connecter des embouts , raccords, ou robinets couramment en service actuellement. 20 25 30 35 40 45  As a result, the end of the canula will serve as a stop for the descent of the piston and completely close at the end of the thrust to prevent the residual air accidentally enters the tubing connected to the chemotherapy needle. body of the mini syringe will have a standard end identical to the ends of other syringes currently in use. so that it can connect tips, fittings, or faucets currently in use. 20 25 30 35 40 45

Claims (2)

REVENDICATIONS - 1 Matériel dit à pression positive, conçu pour permettre d'éviter le phénomène d'aspiration lors du retrait d'une aiguille de Chimiothérapie caractérisé par une mini seringue pourvue d'un piston de poussée animé, sur commande, par un ressort muni d'un repère de positionnement,jumelé avec un dispositif de blocage du système en position mini seringue remplie, et dont la vitesse de poussée sera compensée par une canule à débit limité pour permettre cette manoeuvre de retrait d'aiguille sans risque et dont l'extrémité conjuguée avec une inversion intérieure de la conicité de l'élément passif de la mini seringue, permettra à l'utilisatrice d'éviter la purge du système lors de son fonctionnement.  - 1 material said positive pressure, designed to prevent the phenomenon of aspiration when removing a needle chemotherapy characterized by a mini syringe provided with a thrust piston animated, on command, by a spring provided with a positioning mark, coupled with a system locking device in the filled mini-syringe position, and whose thrust speed will be compensated by a limited flow cannula to allow this safe needle removal maneuver and whose end combined with an internal inversion of the conicity of the passive element of the mini syringe, will allow the user to avoid purging the system during its operation. 2 Matériel , selon la revendication 1 caractérisé par une mini seringue, dont le volume intérieur utilisable sera légèrement supérieur au volume généralement aspiré , lors du retrait de l'aiguille, par le cathéter implanté relié à une chambre de chimiothérapie - 3 Matériel selon la revendication 1 caractérisé en ce que les caractéristiques techniques du dispositif de poussée du piston seront intimement liées au débit de la canule raccordée au cylindre de façon à permettre à l'utilisatrice d'avoir le temps nécessaire de pratiquer les gestes complets à effectuer pour le retrait de l'aiguille de chimiothérapie. 4 Matériel selon la revendication 1 caractérisé en ce que le diamètre intérieur de la canule sera calculé en fonction de la pression exercée par le dispositif de poussée du piston pour permettre à l'infirmière d'avoir le temps de pratiquer les gestes complets à effectuer pour le retrait de l'aiguille de chimiothérapie sans aspiration terminale. 5 Matériel selon la revendication 1 caractérisé en ce que le positionnement de l'extrémité interne de la canule sera déterminé en fonction du volume de la bulle restant dans le corps de la mini seringue quelle que soit la position de cette dernière. - 6 Matériel selon la revendication 1 caractérisé en ce que la conicité de l'intérieur de l'élément passif de la seringue est inversé par rapport aux seringues habituellement utilisées. 40 7 Matériel selon la revendication 1 caractérisé en ce que l'extrémité de la canule servira de butée propre à la descente du piston et à l'obturer complètement en fin de poussée pour éviter que l'air résiduel ne rentre accidentellement dans la tubulure reliée à l'aiguille de chimiothérapie. 45 - 8 Matériel selon la revendication 1 caractérisé par une excentration de l'orifice de guidage du piston de façon à ce que la queue du piston ait tendance à se recentrer naturellement et à se verrouiller par coopération lors du passage de35l'encoche au niveau du couvercle de la mini seringue, une fois celle-ci remplie. - 9 Matériel selon la revendication 1 caractérisé par une encoche dans la queue du piston permettant à celle-ci d'en assurer le verrouillage donc son maintien en position une fois le dispositif rempli. Matériel selon les revendications 1 à 6 caractérisé en ce que le corps de la mini seringue sera doté d'une extrémité standard identique aux extrémités 10 des autres seringues actuellement en service. de façon à pouvoir y connecter des embouts , raccord, ou robinets couramment en service actuellement. 20 25 30 35 40 452 Material according to claim 1 characterized by a mini syringe, whose usable internal volume will be slightly greater than the volume generally aspirated, during removal of the needle, by the implanted catheter connected to a chemotherapy chamber - 3 Material according to the claim 1 characterized in that the technical characteristics of the piston thrust device will be intimately related to the flow of the cannula connected to the cylinder so as to allow the user to have the necessary time to perform the complete actions to be performed for the withdrawal of the chemotherapy needle. 4 Material according to claim 1 characterized in that the inner diameter of the cannula will be calculated according to the pressure exerted by the piston thrust device to allow the nurse to have time to perform the complete actions to be performed for removal of the chemotherapy needle without terminal aspiration. 5. Material according to claim 1 characterized in that the positioning of the inner end of the cannula will be determined according to the volume of the bubble remaining in the body of the mini syringe regardless of the position of the latter. - 6 Material according to claim 1 characterized in that the taper of the interior of the passive element of the syringe is inverted compared to syringes usually used. 40 7 Material according to claim 1 characterized in that the end of the cannula will serve as a stop for the descent of the piston and to completely close the end of thrust to prevent the residual air accidentally enters the connected tubing to the chemotherapy needle. 45 - 8 Material according to claim 1 characterized by an eccentration of the piston guide orifice so that the piston tail tends to refocus naturally and lock by cooperation during the transition from the notch to the level of the piston. lid of the mini syringe, once it filled. - 9 material according to claim 1 characterized by a notch in the piston tail allowing the latter to ensure the locking so its holding in position once the device filled. Material according to claims 1 to 6 characterized in that the body of the mini syringe will have a standard end identical to the ends 10 of other syringes currently in use. so you can connect tips, fittings, or faucets currently in use. 20 25 30 35 40 45
FR0705434A 2007-07-25 2007-07-25 POSITIVE PRESSURE EQUIPMENT TO PREVENT SUCTION EFFECT DURING THE REMOVAL OF A HUBER NEEDLE. Expired - Fee Related FR2919193B1 (en)

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FR0705434A FR2919193B1 (en) 2007-07-25 2007-07-25 POSITIVE PRESSURE EQUIPMENT TO PREVENT SUCTION EFFECT DURING THE REMOVAL OF A HUBER NEEDLE.
FR0709110A FR2919194B1 (en) 2007-07-25 2007-12-27 POSITIVE PRESSURE EQUIPMENT TO AVOID THE ASPIRATION EFFECT DURING THE REMOVAL OF A HUBER NEEDLE

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FR0705434A FR2919193B1 (en) 2007-07-25 2007-07-25 POSITIVE PRESSURE EQUIPMENT TO PREVENT SUCTION EFFECT DURING THE REMOVAL OF A HUBER NEEDLE.

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FR2919193A1 true FR2919193A1 (en) 2009-01-30
FR2919193B1 FR2919193B1 (en) 2009-10-09

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FR0705434A Expired - Fee Related FR2919193B1 (en) 2007-07-25 2007-07-25 POSITIVE PRESSURE EQUIPMENT TO PREVENT SUCTION EFFECT DURING THE REMOVAL OF A HUBER NEEDLE.
FR0709110A Expired - Fee Related FR2919194B1 (en) 2007-07-25 2007-12-27 POSITIVE PRESSURE EQUIPMENT TO AVOID THE ASPIRATION EFFECT DURING THE REMOVAL OF A HUBER NEEDLE

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2966739A1 (en) * 2010-11-03 2012-05-04 M2Ct Sarl Positive pressure compensation equipment for compensating suction of blood from oncology chamber during withdrawal of chemotherapy needle, has one volume filled with liquid during its use such that flowrate of liquid is less during draining
FR2985431A1 (en) * 2012-01-06 2013-07-12 M2Ct Sarl Additional device for sterilizing positive pressure forming assembly by gas during removal of Huber needle from patient, has obturating element associated with seat, so that element moves and blocks exchange port to allow compression of gas

Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0416353A1 (en) * 1989-09-07 1991-03-13 Dieter Dr. Lucas Syringe
FR2721828A1 (en) * 1994-06-29 1996-01-05 Siemens Elema Ab DEVICE FOR BLEEDING A CATHETER FROM AN IMPLANTED INFUSION SYSTEM
US6520941B1 (en) * 1998-10-09 2003-02-18 Kevin Durand Method and device for entrapping gas within a liquid drug container
US20060122562A1 (en) * 2004-11-19 2006-06-08 Mckinley Medical L.L.L.P. Controlled-volume infusion device
EP1782852A1 (en) * 2005-11-04 2007-05-09 F.Hoffmann-La Roche Ag Device for automatic delivery of a liquid medicament into the body of a patient

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Publication number Priority date Publication date Assignee Title
DE29518375U1 (en) * 1995-11-20 1996-01-25 Franz Schneider Brakel GmbH & Co., 33034 Brakel Device for fixing an attachment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416353A1 (en) * 1989-09-07 1991-03-13 Dieter Dr. Lucas Syringe
FR2721828A1 (en) * 1994-06-29 1996-01-05 Siemens Elema Ab DEVICE FOR BLEEDING A CATHETER FROM AN IMPLANTED INFUSION SYSTEM
US6520941B1 (en) * 1998-10-09 2003-02-18 Kevin Durand Method and device for entrapping gas within a liquid drug container
US20060122562A1 (en) * 2004-11-19 2006-06-08 Mckinley Medical L.L.L.P. Controlled-volume infusion device
EP1782852A1 (en) * 2005-11-04 2007-05-09 F.Hoffmann-La Roche Ag Device for automatic delivery of a liquid medicament into the body of a patient

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2966739A1 (en) * 2010-11-03 2012-05-04 M2Ct Sarl Positive pressure compensation equipment for compensating suction of blood from oncology chamber during withdrawal of chemotherapy needle, has one volume filled with liquid during its use such that flowrate of liquid is less during draining
FR2985431A1 (en) * 2012-01-06 2013-07-12 M2Ct Sarl Additional device for sterilizing positive pressure forming assembly by gas during removal of Huber needle from patient, has obturating element associated with seat, so that element moves and blocks exchange port to allow compression of gas

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FR2919193B1 (en) 2009-10-09
FR2919194B1 (en) 2009-10-09
FR2919194A1 (en) 2009-01-30

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