FR2668060A1 - Device for application of an extemporaneous mixture of several components - Google Patents

Abstract

The present invention relates to a device for application of an extemporaneous mixture of several components. In order to activate simultaneously the respective pistons (23) of as many longitudinal syringe bodies (24), mutually juxtaposed transversely, as there are components of the mixture, the device (1) comprises an anterior attachment (9) integral with the syringe bodies (24) and a posterior attachment (19) connected in an integral manner to a transverse yoke (18) for joint activation of the pistons (23), which makes it possible to hold the device (1) by placing the index finger (118) and/or the middle finger (57) of one hand in front of the anterior attachment (9) and the thumb (22) of the same hand behind the posterior attachment (19), and to provoke the advance of the pistons (23) into the syringe bodies (24) by a closure movement of this hand. The device (1) can additionally comprise independent means (119) for dispensing a propellant gas simultaneously to the components of the mixture. The device is handy and is precise as regards the quantities of components of the mixture deposited, and as regards the site where these components are deposited.

Description

The present invention relates to a device for applying an extemporaneous mixture of several components, having a determined longitudinal direction of reference and comprising
- as many longitudinal syringe bodies as there are components; the syringe bodies being mutually juxtaposed transversely and having respective end channels towards the front, mutually juxtaposed transversely and mutually united in a dispensing head, for the exit of respective components and towards the rear of the respective end passages, mutually juxtaposed transversely, for respective pistons,
as many pistons as there are syringe bodies, the pistons penetrating into respective syringe bodies through the respective passages, being capable of sliding longitudinally in the respective syringe bodies between a rear limit position and a front limit position and presenting towards the rear, outside of the syringe bodies, respective ends mutually juxtaposed transversely,
- a main longitudinal cradle connecting the syringe bodies mutually,
a transverse yoke mutually connecting the respective ends of the pistons so as to allow the pistons to slide in unison, in particular towards the front, in the respective syringe bodies,
means for guiding the yoke in longitudinal translation relative to the main cradle.

 By extemporaneous mixture is meant any composition requiring an extemporaneous mixture of its components and intended in particular for pharmaceutical, parapharmaceutical, cosmetic, surgical or even veterinary use. By way of nonlimiting example, the present invention may thus interest the field of the application of compositions of biological glue type, examples of which have already been described in various patents such as European patents N0 0 103 196 , 0 018 561, 0 137 428, 0 035 204, 0 053 338 and the French patent N0 89 10355.

 In connection with the application of an extemporaneous mixture of two components, for the use of surgical glue, such a device is described in European patent N0 0 037 393 in a form comprising two transverse appendages integral with the main cradle, in a posterior zone. of the latter, and located in the extension of one another, respectively on either side of the syringe bodies, to bear forward respectively against the middle finger and against the index finger of a hand of a user such as a surgeon, while the thumb of this hand rests forward on the yoke to hold the device and, as necessary, impart to the pistons a movement forward, against the inside the syringe bodies, in order to drive out the respective components of the mixture via the dispensing head.

 This gripping method is analogous to that of a traditional injection syringe but, while it is generally considered to be convenient in the case of such a syringe, it turns out to be particularly inconvenient in the case of the device described in the patent. European N0 0 037 393. Indeed, the mutual spacing of the transverse appendages of the cradle is then considerably greater than that of the tabs usually provided for the same effect on a body of a traditional injection syringe, so that the middle finger and the indexes are mutually spaced a considerably greater transverse distance when holding the device described in European Patent No. 0 037 393 than when holding a traditional injection syringe. In addition, the components of the mixture being in the syringe bodies of the device described in European patent N0 0 037 393 generally oppose the displacement of the pistons forwards a res istance much greater than the content of the body of a traditional injection syringe prevents the displacement of the single piston thereof. As a result, the device described in European patent N0 0 037 393 is difficult to hold and difficult to maneuver, which means that it is difficult, by means of such a device, to deposit in a perfectly determined location a perfectly determined amount of the extemporaneous mixture.

 The object of the present invention is to remedy these drawbacks and, to this end, the present invention provides a device of the type indicated in the preamble, further characterized in that the main cradle integrally carries an anterior appendage projecting in a determined transverse direction of a determined longitudinal plane, in that the yoke carries integrally a posterior appendage projecting in said transverse direction of said longitudinal plane, the posterior appendage being situated behind the anterior appendage when the pistons occupy said front limit position as when they occupy said rear limit position and in that, when the pistons occupy said rear limit position, the posterior appendage is located at a distance from the anterior appendage such that one can then engage the index and / or middle finger of one hand in front of the anterior appendix and the thumb of the same hand behind the appendix post laughing to move the pistons toward said forward limit position by a closing movement of the hand.

 The distance thus separating the posterior appendage from the anterior appendage when the pistons occupy their rear limit position can be chosen, for example, of the order of approximately 6 to 8 cm, these figures being given only by way of example. not limiting.

 It is easily understood that the position of the hand holding the device according to the invention by the posterior and anterior appendages respectively is similar to that of a hand holding a pistol grip, which makes it possible to orient the device precisely to deposit the precisely extemporaneous mixing at the desired location; in addition, the displacement of the pistons forwards inside the syringe bodies, controlling the exit of the components of the mixture, is effected by a natural movement of the hand, which on the one hand does not remove its precision in the orientation of the device according to the invention and on the other hand makes it possible to more precisely dose the amount of mixture that is deposited, as required.

 Preferably, the anterior appendage and the posterior appendage have in said longitudinal plane a generally concave shape respectively towards the front and towards the rear, which improves the grip of the device according to the invention; naturally, other forms could however be chosen as soon as they lend themselves to effective gripping of the device.

 Preferably also, said longitudinal plane constitutes a mean plane of general symmetry for the device, which in particular makes it possible to balance at least approximately the resistances opposed by the components of the mixture to be produced against the forward movement of the pistons inside the syringe bodies, and consequently to best balance the forces inside the device and, in particular, thus to avoid a tendency of the yoke to warp; ; when the syringe bodies are two in number, as is frequent in particular in the case of devices intended for producing an extemporaneous mixture for the use of biological glue, these syringe bodies are preferably arranged respectively on either side other of said longitudinal plane preferably constituting a mean plane of general symmetry for the device, and it is naturally the same for the pistons.

However, other provisions could also be adopted in this regard without departing from the scope of the present invention.

 Provision could be made for the yoke guide means to be arranged on the one hand on the yoke and on the other hand on the main cradle but, according to a preferred embodiment of the device according to the invention, these means are arranged in a on the yoke and on the other hand on the anterior appendix. For example, these means comprise a longitudinal rod secured to the yoke, projecting forwardly with respect to it and having a predetermined current cross section which is substantially constant , and a longitudinal barrel integral with the anterior appendage, forming a rearward projection relative thereto and defining a longitudinal channel having a substantially constant current cross section, complementary to said cross section of the rod, so as to receive and guide the latter in longitudinal sliding, and the rod bears the posterior appendage securely, the channel being open in said transverse direction by a comparatively narrowed longitudinal slot authorizing the connection of the rod with the posterior appendage and having longitudinal dimensions suitable for allowing a longitudinal displacement of the latter compatible with the passage of the pistons from one to the other of the limit positions respectively posterior and anterior; such a choice makes it possible to place the anterior appendix as the posterior appendage as forward as possible, that is to say as close as possible to the dispensing head, and thus to increase the precision of the device according to the invention as to the place where the mixture is deposited, in particular allowing the posterior appendage to be shifted forward relative to the yoke and to place the anterior appendage approximately in line with the extreme canals of the syringe bodies; however, other provisions could also be adopted for this purpose without departing from the scope of the present invention.

 Advantageously, the yoke and the anterior appendage have mutual abutment means defining one and the other of the posterior and anterior limit positions respectively, knowing that such means could also be provided elsewhere.

 Provision may be made for the anterior appendix to be permanently attached to the syringe bodies and for the yoke to be permanently attached to the ends of the pistons, but in particular when the means for guiding the yoke are arranged on the one hand on the yoke and on the other hand on the anterior appendage, it is also possible to produce the device according to the invention in a form characterized in that the main cradle and the ends of the pistons are connected in a removable and interchangeable manner respectively to the appendix anterior and the yoke, which in particular makes it possible to associate at will with the same first subassembly, preferably produced in a durable and reusable manner, consisting of the anterior appendage, the yoke and the means for guiding the latter, a second sub-assembly meanwhile preferably made for a single use and consisting of a main cradle permanently carrying syringe bodies of deter mined and of determined content, as well as the corresponding pistons respectively engaged in these syringe bodies, in order to use the same first sub-assembly with various second sub-assemblies having identical or different characteristics, for example in terms of cross section syringe bodies and / or the contents thereof; this second sub-assembly may further include such a dispensing device, integral with the syringe bodies, and / or the respective components of determined extemporaneous mixtures, enclosed by the pistons in the respective syringe bodies, and thus be presented in sterile form , in a package that is opened immediately before placing this second sub-assembly on the first sub-assembly.

 For example, for this purpose, the main cradle is fitted in said transverse direction on the anterior appendage, the yoke being able to be thus fitted onto the ends of the pistons or simply being in free longitudinal support, towards the front, against these ends of the pistons.

 The dispensing head can be permanently connected to the syringe body but, preferably, it is detachably and interchangeably connected thereto; in the latter case, and when the main cradle is fitted in said transverse direction on the anterior appendage, the dispensing head is advantageously itself fitted in said transverse direction on this anterior appendage, which is opposed to it is driven forward by the components of the mixture leaving the syringe bodies when the pistons move forward inside the latter but allows its easy change if necessary.

 In a manner known in itself, the dispensing head may comprise a number of mutually independent channels identical to the number of syringe bodies so as to route the components derived from the latter, separately, to as many mutually adjacent outlets transversely , at which the mixture is produced outside the dispensing head to be either deposited directly at the desired location, or be conveyed to this location by a needle extending these outlets, in order to apply the mixture in the form of a bead or a stud, but it can also further include one or more channels intended to convey, in the immediate vicinity of the outlets of the components, a propellant gas for the latter, when the mixture is to be applied in tablecloth.

 In such a case, the dispensing head can be connected to means for supplying propellant gas, independent of the device according to the invention but, preferably, the latter comprises autonomous means for dispensing a propellant gas for the components, by dispensing head, as described in French patent application No. 90 02262 of the Applicant.

 These autonomous means for dispensing a propellant gas can advantageously include a propellant gas reservoir, an auxiliary cradle integral with the main cradle and carrying the propellant gas reservoir, means of connection between the propellant gas reservoir and the dispensing head, an interposed valve. in the connecting means, and means, carried by the auxiliary cradle, for opening or closing the valve at will. The propellant gas tank can be provided in a refillable form but, preferably, it is removably and interchangeably connected to the auxiliary cradle and the connecting means are removably connected to the gas tank and / or to the dispensing head, which allows to quickly replace this tank, when empty, with a full tank.

 In particular with the aim of making it possible to standardize the manufacture of the devices according to the invention, whether or not they have autonomous means for dispensing a propellant gas by the dispensing head, the auxiliary cradle is preferably connected itself in a removable manner and interchangeable with the main cradle, the connection means being detachably connected to the gas tank and / or to the dispensing head; the auxiliary cradle can thus be fitted in said transverse direction on the main cradle, although other mounting methods, preferably removable, can also be chosen.

 The means for opening or closing the valve at will can be produced in different ways and, according to an embodiment which is both simple and convenient to use, these means comprise a trigger disposed immediately in front of the anterior appendage, according to said longitudinal plane, and mounted movable relative to the auxiliary cradle between a limit position for closing the valve in which it projects forward relative to the anterior appendix and a limit position for opening the valve in which it is retracted towards the anterior appendage, and means for elastic return of the trigger to its closed position of the valve.

 The trigger can itself be provided in various forms, and for example in the form of a push button, but, according to a currently preferred arrangement, it is mounted to tilt relative to the auxiliary cradle, between its limit positions respectively for closing and valve opening, about a tilting axis oriented perpendicular to said longitudinal plane. The mode of cooperation between a trigger thus mounted and the valve, for the opening and closing of the latter, may vary to a large extent but a particularly simple embodiment is characterized in that the tilting axis is located between the trigger and the propellant reservoir, in that the propellant reservoir is oriented longitudinally and mounted for longitudinal sliding by relative to the auxiliary cradle and has forward a valve control tip capable of occupying relative to the propellant tank two limit positions of valve closing and valve opening respectively and elastically urged towards its limit valve closing position, its limit valve closing position being shifted forward, relative to its limit valve opening position , in that the auxiliary cradle comprises means of longitudinal immobilization of the valve control end piece and in that the trigger carries integrally, opposite the tilting axis, means for applying to the reservoir propellant thrust forward when the trigger moves from its valve closed position to its valve open position; for example, said means for applying a forward thrust to the reservoir of propellant gas comprise a transverse fork integral with the trigger, opposite the latter relative to the tilting axis, and engaged with a neck the propellant gas tank.

 The auxiliary cradle, retaining the gas bottle, can be arranged in different ways relative to the main cradle and to the previous appendage, but, in a particularly advantageous manner in terms of overall dimensions of the device, on the one hand, and ease of assembly and disassembly of the auxiliary cradle relative to the main cradle when the auxiliary cradle is removable and interchangeable, the auxiliary cradle is preferably arranged opposite the anterior appendage relative to the main cradle and the main cradle has passage means for expansion, for example in the form of a light passing right through it along the abovementioned longitudinal plane.

 Other characteristics and advantages of a device according to the invention will emerge from the description below, relating to two variants of the same non-limiting example of implementation, as well as the attached drawings which form an integral part of this description .

 - Figure 1 shows a side elevational view of a device according to the invention devoid of any means for dispensing a gas by the dispensing head, while the pistons occupy a first limit position or rear limit position, corresponding to the maximum filling syringe bodies by respective component of the mixture to be produced.

 - Figure 2 shows a view similar to that of Figure 1, except that the pistons occupy a front limit positiori, corresponding to the maximum emptying of the syringe bodies by respective component of the mixture.

 - Figure 3 shows a top view of the device illustrated in Figure 1, while the pistons occupy their rear limit position.

 - Figure 4 shows a view of the device illustrated in Figure 1, in section through two transverse half-planes identified in IV-IV in Figure 1.

 FIG. 5 shows a perspective view of an interchangeable subassembly forming part of the device according to the invention illustrated in FIGS. 1 to 4.

 - Figure 6 shows the same device according to the invention, equipped with autonomous means for dispensing a gas by the dispensing head, suitably chosen for this purpose while the device remains otherwise unchanged.

 - Figure 7 shows, in side elevation similar to that of Figure 6, autonomous means for dispensing a propellant gas by the dispensing head.

 - Figure 8 shows a top view of the device illustrated in Figure 6.

 FIG. 9 shows a view of this device in section through two transverse half-planes identified in IX-IX in FIG. 6.

 FIG. 10 shows, in a view similar to that of FIG. 5, an interchangeable sub-assembly forming part of the device illustrated in FIGS. 6 to 9.

 Subsequently, the device according to the invention will be described in connection with the application of a two-component biological glue, but it should be understood that this is only a non-limiting example of destination. of a device according to the invention.

 Reference will firstly be made to FIGS. 1 to 5, where a device according to the invention 1 has been illustrated comprising two main components assembled mutually in a removable and interchangeable manner, on the basis of a generally durable component 2 and a disposable component 3 which is intended for a single use and which can be substituted, after this use, another similar disposable component on the durable component 2 to reuse the latter; however, a person skilled in the art will readily understand that it would not be departing from the scope of the present invention to definitively assemble the components 2 and 3 which will be described, either with a view to a single use of the device 1 as a whole, or with a view to the possibility of reusing this device 1 as a whole, in a manner which can easily be deduced from the following description.

 For reasons of simplicity, the two components 2 and 3 will be described with reference to their assembled state, that is to say as they are illustrated in FIGS. 1 to 4, unless otherwise stated in particular with reference to FIG. 5 ; in this FIG. 5, the disposable component 3 is presented alone, that is to say in the dissociated state of the durable component 2, in sterile form and in sterile packaging 4, it being understood that the durable component 2 is intended to be sterilizable before each use.

 In the assembled state, the two components 2 and 3 have an average longitudinal plane 5, with respect to which they respectively have a general symmetry, and 6 has been designated by a determined longitudinal direction, included in this plane 5 or parallel to the latter, which longitudinal direction serves as a reference for the notions of longitudinality and transversality, as well as to the concepts of front and rear which appear in the present description.

 The durable component 2 comprises a flat longitudinal barrel 7 having a longitudinal face 8 which is essentially flat and perpendicular to the plane 5, intended to receive the disposable component 3; opposite this face 8, the barrel 7 integrally carries an anterior appendage 9 symmetrical with respect to the plane 5, like the barrel 7 itself, and forming with respect to the barrel 7 a projection in a determined transverse direction 67 , perpendicular to the face 8; preferably, as illustrated, this anterior appendage 9 is located closer to a transverse face 74 defining a front end of the barrel 7 than to a transverse face 69 defining a rear face of the latter, and for example located at a longitudinal distance (not referenced) of this face 74 approximately equal to half of the longitudinal distance (not referenced) separating it from the face 69, but these figures are given by way of nonlimiting example.

 The barrel 7 and the anterior appendage 9 are for example made by molding a synthetic material or a metal alloy, in one piece or two pieces constituting the specular image of each other relative to the plane 5 and mutually supportive.

 As appears more particularly from the examination of FIG. 4, the barrel 7 is hollow and, more precisely, has internally a longitudinal channel 10 open towards the rear, in the face 69, and extending towards the front at less to the anterior appendage 9, and this longitudinal channel 10 has a cross section suitable for guiding the longitudinal translation, without other possibility of relative movement, of a longitudinal rod 11 which, in particular, forms a protrusion of the barrel 7 towards the rear, as shown in Figures 1 and 3 in particular; the channel 10 and the rod 11 are respectively symmetrical with respect to the plane 5 and present respective respective transverse sections which are substantially constant, mutually complementary, for example circular as illustrated or else rectangular in a manner not illustrated, to ensure the aforementioned guidance.

 Due to the positioning of the anterior appendage 9, the barrel 7 has a zone 12 cantilevered towards the rear relative to the latter and, in this zone 12, as shown in FIG. 4, the channel 10 is open transversely opposite the face 8, that is to say in the direction 67, in the form of a longitudinal slot 13 symmetrical with respect to the plane 5, extending continuously from the face 69 to 'in the immediate vicinity of the anterior appendage 9 and having perpendicular to the plane 5 of dimensions smaller than the dimensions that have perpendicular to this plane the channel 10 and the rod 11 so as not to interfere with the aforementioned guidance.

 Projecting inside the slot 13, the rod 11 integrally carries a longitudinal slide 14 which, as shown more particularly in FIG. 4, has a substantially constant current cross section, complementary to a also substantially current cross section. constant presented by the slot 13 as well as zones of the barrel 7 directly adjacent to this slot 13, on either side of the latter, so as to oppose a rotation of the rod 11 on itself at inside the channel 13 when these have a current circular cross section, as is the case in the example illustrated, to thus ensure guiding of the whole integral formed by the rod 11 and the slide 14 with the longitudinal sliding relative to in barrel 7, with no other possibility of relative displacement.

 As best shown in Figure 1, the rod 11 and the slide 14 have substantially the same longitudinal dimension (not referenced), corresponding substantially to the longitudinal dimension (also not referenced) separating the anterior appendage 9 from the transverse face 69 of the barrel 7 and are connected to each other only in end zones 16 and 17, respectkéinent rear and front, so as to define between them, from one to the other of these end zones 16 and 17, that is to say on most of their longitudinal dimension (not referenced), a longitudinal lumen 15 engaged with a pin 18 passing through the slot 13 right through, perpendicular to the plane 5, in the immediate vicinity of the channel 10 so that the whole formed by the rod 11 and the slide 14 can slide longitudinally relative to the barrel 7 between two limit positions, namely a rear limit position, illustrated in Figure 1, in which the extreme zone 17 abuts rearward against the pin 18, and in which the whole integral formed by the rod 11 and the slide 14 forms a maximum projection, towards the rear, relative to the transverse face 69 of the barrel 7, and a front limit position illustrated in FIG. 2, in which the rod 11 is practically entirely housed inside the channel 13, and in which the rear extreme zone 16 abuts forward on the pin 18.

 In the end zone 17, the whole integral formed by the rod 11 and the slider 14 carries in a solid manner a posterior appendage 19 symmetrical with respect to the plane 5 like the slider 14 and the rod 11 and forming with respect to the slider 14 a projection in the transverse direction 67.

 Respectively forward and backward, the anterior appendage 9 and the posterior appendage 19 have a face 20, 21 which, when viewed in section on the plane 5 or in a plane parallel to it , is concave when, when viewed in a longitudinal section plane perpendicular to plane 5, it is convex in a manner not visible in the figures but easily understood by a person skilled in the art.

 Thus, the user can easily hold the device 1 by the anterior 9 and posterior appendages 19 by using the latter in the manner of a stick, that is to say by wedging the face 21 of the rearward the posterior appendage 19 against the thumb 22 of the hand and the face 20 forwards against the index finger 118 and / or the middle finger 57 of the same hand.

 To this end, when the whole integral formed by the rod 11, the slide 14 and the posterior appendage 19 occupies its rear limit position illustrated in FIG. 1, the faces 20 and 21 are mutually spaced apart, longitudinally, by a distance L at most equal to the distance separating the thumb and forefinger from one hand when the latter are in the gripping position; this distance L is for example of the order of approximately 6 to 8 cm, these figures being given by way of nonlimiting example.

 It is also thus possible, by a natural closing movement of the hand, to apply thumb 22, to the face 21 of the posterior appendage 19, a push forward while the anterior appendage 9 is wedged towards the front, by its face 20, on the index 118 and / or the middle finger 57, which causes a longitudinal sliding of the whole integral formed by the rod II, the slide 14 and the posterior appendage 19 towards the front relative to the all integral formed by the anterior appendage 9 and the barrel 7, up to the relative position illustrated in FIG. 2, in which the posterior appendage 19 is placed directly behind the anterior appendage 9.

 By the rear end zone 16, the whole integral formed by the rod 11, the slider 14 and the posterior appendage 19 carries integrally, for example by molding in a single piece of a synthetic material or a metal alloy, a yoke 58 having the general shape of an oblong plate perpendicular to the plane 5, overlapping the latter and forming a projection, in the opposite direction to the direction 67, with respect to the rod 11 as well as with respect to a longitudinal geometric extension ( not referenced) of the face 8 of the barrel 7.

 Forward, the yoke 58 has, in the example illustrated, a flat face 59 perpendicular to the plane 5 and symmetrical with respect thereto, like the whole of the yoke 58.

 It is easy to see that the yoke 58, in particular by its face 59, moves in unison with the posterior appendage 19, in longitudinal translation relative to the whole integral formed by the barrel 7 and the anterior appendage 9 in particular when apply the thumb 22, to the posterior appendage 19, a thrust forward while retaining the anterior appendix 9 of the index 118 and / or middle finger 57.

 The movement thus communicated around the integral formed by the rod 11, the slide 14, the posterior appendage 19 and the yoke 58, relative to the all integral formed by the anterior appendage 9 and by the barrel 7, is intended to be transmitted to the disposable component 3 when the latter is assembled to the durable component 2 as illustrated in FIGS. 1 to 4, in the form of simultaneous longitudinal displacements, of the same amplitude, as many longitudinal pistons of syringe 23 as components of the surgical glue to applying, respectively in as many longitudinal bodies 24 of syringe, mutually juxtaposed transversely and mutually secured.

 In the nonlimiting example illustrated, corresponding to most practical cases, the pistons and syringe body 23, 24 are provided respectively in number of two, identical and mutually symmetrical with respect to the plane 5 when the component 3 is assembled to the component 2, but it would not be departing from the scope of the present invention to provide for a greater number of them and / or to provide for them different, in particular as regards their cross section, as is known elsewhere in the field of injection syringes, for example example due to US Patent No. 3,572,336.

 According to an embodiment of the invention which has not been illustrated, the two syringe bodies 24 could be made in one piece, as well as the two syringe pistons 23, but it is preferred, as is illustrated, to use for the implementation of the invention standardized syringes 25, made for example of transparent synthetic material, for a single use, and each of which has its own body 24 and its own plunger 23.

 Such syringes, usually intended for injections, are well known in themselves.

 It will simply be recalled that the body 24 of each of them has a tubular shape, elongated along an axis 26 oriented longitudinally and intersecting, at right angles, from the face 59 of the yoke 58 when the components 2 and 3 are mutually assembled. Respectively towards this axis 26 and in the direction of a distance with respect thereto, the body 24 is delimited by faces 27, 28, respectively inner peripheral and outer peripheral, both cylindrical of revolution around of the axis 26, between a transverse end 29, here turned towards the rear, fully open to allow passage to the respective piston 23, and a transverse end 30, here turned towards the front, at the level of which the body 24 tapers in radial directions with reference to the axis 26, to take the form of an extreme tubular channel 31 of tubular shape, of revolution around the axis 26 and thus turned forward when the components 2 and 3 are assembled; the extreme tubular channel 31 has towards the axis 26 an inner peripheral face not shown which can be cylindrical of revolution around the axis 26, with a diameter smaller than that of the inner peripheral face 27, while, in the direction d 'A distance from the axis 26, it has an outer peripheral face 32 whose shape, although close to a cylindrical shape of revolution around the axis 26, is slightly frustoconical with a convergence facing forward when the two components 2 and 3 are mutually assembled; the inner and outer peripheral faces of the end channel 31 are mutually connected in an end annular face 33, of revolution about the axis 26 and facing forward when the two components 2 and 3 are mutually assembled. At its rear end 29, each body 24 integrally has two flat legs 34 perpendicular to the axis 26 and projecting from its outer peripheral face 28 in the direction of a distance from this axis 26, in positions diametrically opposite with respect thereto; these tabs 34 are intended to receive the middle finger and the index finger of a user's hand when the syringe 25 is used as an injection syringe, that is to say in applications other than those of the device according to the invention 1.

 The piston 23, capable of sliding relative to the respective body 24 along the axis 26 thereof, that is to say longitudinally when the two components 2 and 3 are mutually assembled, comprises a rectilinear rod 35, then longitudinal , engaged in the body 24 by the open end 29 thereof, a piston head 36 having the shape of a sealed disc, perpendicular to the axis 26 and in sealing contact with the inner peripheral face 27 of the body 24, against which it can slide parallel to the axis 26, that is to say longitudinally when the two components 2 and 3 are mutually assembled, to delimit inside the body 24, with the latter, a more or less large volume, and a pusher 37 in turn placed outside the body 24 and also having the shape of a disc perpendicular to the axis 26, this pusher 37 being adapted to receive a thrust applied by the thumb of the when the user ringue 25 is used in the traditional way, in an injection syringe. The piston head 36 and the pusher 37 are thus disposed at the opposite ends of the rod 35, with which they are advantageously made in one piece, for example by molding a synthetic material, except that, preferably , a seal not shown is attached to the piston head 36 to improve the tightness of its sliding contact with the inner peripheral face 27 of the syringe body 24.

 The latter is itself advantageously produced in one piece with the end channel 31 and the legs 34.

 Naturally, other embodiments of each syringe 25 could be adopted without departing from the scope of the present invention.

 In view of the implementation thereof, the two bodies 24 are mutually assembled in an integral manner by elastic snap-fitting, in direction 67 if we refer to the mutually assembled state of the two components 2 and 3, on the same main cradle 38 of mutual securing, in a position such that, not only the bodies 24 are disposed respectively on either side of the plane 5, symmetrically with respect to each other, in particular in as regards their axes 26, when the two components 2 and 3 are mutually assembled, but also that their rear ends 29 are mutually juxtaposed transversely, as well as their front ends 30, in particular as regards the end tubular channels 31, and that the tabs 34 are turned respectively in the direction 67 and in the opposite direction, with reference to the axis 26 of the corresponding syringe body 24.

To this end, the cradle 38 can be in various embodiments and, by way of nonlimiting example, it has been illustrated in the form of a flat block, oblong longitudinally, of a semi-rigid material such that a synthetic material, having a symmetry with respect to the plane 5 when the two components 2 and 3 are mutually assembled and defined, if one refers to this state of the device 1, by
- two extreme transverse edges 39, 40 planes, mutually parallel, perpendicular to the plane 5 and turned respectively backwards and forwards with reference to the direction 6; these two edges 39 and 40 are mutually spaced longitudinally by a distance 1 both slightly less than the aforementioned distance L and slightly greater than the longitudinal dimension X of a syringe body 24, between its ends 39 and 40
- A longitudinal face 41 of generally planar shape, complementary to that of the longitudinal face 8 of the barrel 7, and perpendicular to the plane 5 which it overlaps, this longitudinal face 41 connecting respectively rearward and forwards to the edges 39 and 40 when the components 2 and 3 are mutually assembled, the face 41 locally matches the longitudinal face 8, between a transverse level corresponding substantially to that of the posterior appendage 19 when the whole integral formed by the latter with the rod 11 and the slide 14 occupies a rear limit position illustrated in FIG. 1, and the level of the anterior appendage 9
- Another longitudinal face 42 of generally planar shape, also overlapping the plane 5 and extending perpendicular thereto, from one to the other of the edges 39 and 40, this face being turned in the opposite direction to the direction 67 ; this face 42 is hollowed out by two longitudinal grooves 43, mutually symmetrical with respect to the plane 5 and extending from one to the other of the edges 39 and 40; each of these grooves 43 is delimited by an inner peripheral face 44 cylindrical of revolution about a respective axis 26, with a diameter substantially identical to that of the outer peripheral face 28 of a syringe body 24 and an angular development (not referenced), with reference to the respective axis 26, slightly greater than 1800 so as to allow the aforementioned snap-fastening of each syringe body 24 into one, respectively, of these grooves 43 of the main cradle 38, in a relation of coaxiality
- two lateral, longitudinal, convex faces 45 mutually connecting the longitudinal faces 41 and 42 as well as the transverse edges 39 and 40, in positions mutually symmetrical with respect to the plane 5, respectively on either side thereof, each of these side faces 45 having approximately a cylindrical shape of revolution around the axis 26 of the groove 43 located on the same side as it relative to the plane 5 with a diameter greater than that of this groove.

 In the immediate vicinity of the edge 39, in the inner peripheral face 44 of each groove 43 is hollowed out a transverse lumen 46 for one of the tabs 34 of the respective syringe body 24. This housing, arranged hollow in the direction 67, has longitudinal dimensions (not referenced), substantially identical to those of the tab 34 which it must receive, so as to ensure immobilization of the syringe body 24 corresponding against any longitudinal movement relative to the main cradle 38, relative to a relative position in which the transverse end 30 of the syringe body 24 coincides approximately with the edge 40 of the main cradle 38. The aforementioned tab 34 of each syringe body 24 forms a projection in the direction 67 relative to the longitudinal face 41 of the main cradle 38 and, to allow this face 41 to be superimposed closely on the longitudinal face 8 of the barrel 7, the latter is itself hollowed out by a groove transverse 47, respectively on either side of channel 10.

 The mutual joining of the two syringe bodies 24 is reinforced by the mounting, by conical fitting, on the frustoconical outer peripheral faces 32 of their extreme tubular channels 31, of a dispensing head 48 for the components of the surgical glue contained respectively in the syringe body 24. This dispensing head 48 preferably forms an integral part of component 3 when it is presented in sterile packaging 4, as a disposable whole in which, in addition, the bodies 24 contain the respective components of the surgical glue, the pistons 39 being pulled as far as possible out of the bodies 40, towards the rear if reference is made to direction 6; however, it is not beyond the scope of the present invention to provide that this head 48 does not form an integral part of this assembly presented in sterile packaging, which may also not include the components of the glue inside the bodies 24 respective; in such a case in particular, the head 48 is designed to be mounted by conical fitting on the outer peripheral faces 32 frustoconical of the extreme tubular channels 31 of the bodies 24 in a removable manner, interchangeable with respective needles 49, illustrated in FIG. 3, allowing the filling of each body 24, respectively, by means of the respective component of the adhesive by pulling on the corresponding piston 23 respectively, from a position in which the head 36 adjoins the end 40 of the respective body.

 The dispensing head 48 is of an embodiment known in itself, in the case of devices for applying surgical glue of the prior art, and capable of simultaneously dispensing the components of the glue contained in the respective bodies 24 , in the form of a cord or a stud.

It will simply be recalled that for this purpose, the dispensing head 48 comprises, reference being made to the position it occupies when the two components 2 and 3 are assembled together.
- towards the rear, two tubular inlet end pieces 50, oriented longitudinally and juxtaposed transversely, in mutually symmetrical positions relative to the plane 5, each of these end pieces 50 being fitted coaxially on a respective tubular channel 31, by the peripheral face frustoconical outer 32 ~ thereof, integrally but removable
- forwards, two outlet nozzles 51 respectively for one and the other of the components, these nozzles 51 being turned forwards and mutually juxtaposed in longitudinal overhang, towards the front at the anterior extreme face 74 of the barrel 7; these outlet nozzles 51 are advantageously arranged inside an outlet nozzle 52 allowing, if necessary, to be fitted in a solid but removable manner on the dispensing head 48 a needle 53, of known type, for transferring the glue components in a location that is difficult to access;
two mutually independent channels 54 arranged inside the dispensing head 48 for mutually connecting a respective inlet nozzle 50 and a respective outlet nozzle 51.

 The dispensing head 48 is advantageously made in a single piece of synthetic material; it is generally symmetrical with respect to the plane 5 when the components 2 and 3 are mutually assembled.

 The bodies 24 of the two syringes 25 are thus assembled mutually in solidarity, by means of the main cradle 38 and preferably by that of the dispensing head 48, when component 3 is independent of component 2 of the device according to the invention 1 Where appropriate, their mutual connection could be further strengthened by means of the main cradle 38 using complementary means, and for example by clamping on the latter by means of at least one link overlapping the syringe bodies 24 opposite of the face 42 of the main cradle 38, as shown schematically at 55 in FIGS. 4 and 5, in the form of a cover permanently secured to the main cradle 38 for example by irreversible snap-fitting and having opposite each body of syringe 24, made of transparent material, a longitudinal window 56 for viewing the degree of filling of the respective syringe body 24 by respective component glue. On the other hand, although it could also be otherwise, the two pistons 23 then remain mutually independent and their mutual securing with respect to a longitudinal movement, in particular towards the front if we refer to the assembled state of components 2 and 3, results only from the integral but removable assembly of the latter, after component 3 has been removed from its sterile packaging 4.

 In the embodiment of the invention which has been illustrated, this assembly is carried out by fitting the component 3 onto the component 2, in the aforementioned transverse direction 67, corresponding to a displacement of the face 41 towards the face 8 after they have been placed opposite one another in a relationship of mutual parallelism, and so that the component 3 presents with respect to the plane 5 the same symmetry as the component 2, by turning the dispensing head 48 towards the front and the piston 23 towards the rear.

 To this end, various types of mutual nesting means can be provided, in addition to the face 8 of the barrel 7, on the one hand, on the face 41 of the main cradle 38 and on the dispensing head 48, on the other hand; these mutual interlocking means must be reversible without destroying the component 2, at least, when the latter is durable but they can also be irreversible in the case where the components 2 and 3 are intended to be discarded after a single use, or to be reused together after sterilization and filling of syringe barrels 24.

 For example, the main cradle 28 comprises, near its rear edge 39, two blind holes 60 arranged in its face 41, perpendicularly to the latter, in positions that are mutually symmetrical with respect to the plane 5 whereas, in a comparatively position closer to its edge before 40, it has along this plane 5 a blind hole 61 also arranged in its face 41, perpendicular thereto; the blind holes 60 and 61 are thus disposed respectively on either side of the slots 46 for receiving the tabs 29 of the syringe bodies 24. Complementarily, the barrel 7 has protruding on its face 8, perpendicular to the latter, two nipples 62 disposed between the groove 47 for receiving the tabs 34 of the syringe bodies 24 and its rear end face 69, in positions mutually symmetrical with respect to the plane 5 and corresponding to those of the blind holes 60, for fitting respectively in both of these blind holes 60; similarly, it has projecting on its face 8, perpendicularly to the latter, along the plane 5, between the groove 47 and its face 74 of the anterior end, a stud 63 suitable for fitting into the blind hole 61 when the pins 62 are fitted into the blind holes 60. Any appropriate conformation of the pins 62, 63 and the blind holes 60, 61 can be adopted so that this mutual interlocking, which can be accompanied by a certain elastic deformation of the main cradle 38 , ensures a firm connection of the latter with the barrel 7 and, in the case of a single-use component 3 while the component 2 is intended to be reused, offer a possibility of removing at will the component 3 by applied traction the main cradle 38 in the opposite direction to the direction 67, with respect to the component 2, without damaging the latter but preferably by deteriorating the component 3 sufficiently so that it cannot be fixed again on the component 2, that is to say to be reused; for example, for this purpose, the pins 62 and 63 may be provided, in a manner not shown but easily understood by a person skilled in the art, beards capable of being anchored in the material constituting the main cradle 38, around the blind holes 60, 61, during mutual interlocking and to sufficiently deteriorate the material constituting the main cradle 38 when the latter is detached from the barrel 7 so that a possible interlocking again no longer results in sufficient mutual securing of the main cradle 38 and barrel 7; if necessary, such an arrangement can be limited to the pins 62 so that, when the component 3 is assembled to the component 2 by fitting the main cradle 38 onto the barrel 7, by means of the blind holes 60, 61 and nipples 62, 63, and when, as will appear below, the dispensing head 48 is itself fitted in the direction 67 on the barrel 7, it is possible after mutual assembly of the components 2 and 3 to print a slight pivoting on the component 3, around the nipples 62, relative to the component 2, over a sufficient amplitude to dislodge the dispensing head 48 relative to the barrel 7 and therefore authorize its change, while authorizing after this change a new effective holding of the component 3 on the component 2 by maintaining the mutual nesting of the studs 62 and the blind holes 60 and by a new nesting of the stud 63 in the blind hole 61, with the nesting of the new dispensing head 48 on the was 7.

 In view of the fitting of the dispensing head 48, in the direction 67, the barrel 7 has projecting on its face 8, in front of the anterior appendage 9, two lateral edges 64 mutually symmetrical with respect to the plane 5 and mutually separated so as to receive between them the dispensing head 48; towards each other, that is to say towards the plane 5, in a zone corresponding to the position occupied by the tubular inlet nozzles 50 of the dispensing head 48 when the component 3 is assembled to the component 2, the rim 64 has notches 65 each of which is suitable for partially matching a tip 50 respectively corresponding, in particular from the front by forming a respective transverse shoulder 66 turned towards the rear; ; thus, when the head 48 is disposed between the flanges 64, its inlet end pieces 50 abut forward against the shoulders 66, which prevent the head 48 from being driven forward by the components leaving the syringe bodies 24 under the thrust of the pistons 23.

 The flanges 64 also leave a free passage between them, towards the front, to the dispensing head 48.

 In the immediate vicinity of the face 74 of the front end of the barrel 7 is arranged between the flanges 64 a lug 68 forming a projection on the face 8 of the barrel 7, perpendicular to the latter, along the plane 5, leaving between it and each of the rebo # rds 64 a chute 69 whose interest will appear later; perpendicular to the face 8, this tab 68 has dimensions such that, when the component 3 is assembled with the component 2, the dispensing head 48 is supported in the direction 67 on this tab 68.

 The relative longitudinal positioning of the components 2 and 3 in the assembled state, on the one hand, and the longitudinal positioning of the yoke 58 relative to the rod 11, to the slide 14 and to the posterior appendage 19 are such that, when these the latter occupy their rear limit position illustrated in FIG. 1, the interlocking of component 3 in the direction 67 on component 2 has the consequence that the plungers 37 of the pistons 23, occupying with respect to the syringe body 24 their maximum filling position of the latter, are juxtaposed closely to the face 59 of the yoke 58, respectively on either side of the plane 5; thus, thereafter, any displacement of the posterior appendage 19 forwards, that is to say towards the anterior appendage 9, causes via the yoke 58 a joint advance of the two pistons -23 by relative to the respective syringe body 24, that is to say the ejection via the dispensing head 48 of the components contained respectively in one and the other of the syringe bodies 24, in a proportion identical to the proportion existing between the respective inner sections of the syringe bodies 24.

 When, as shown in FIG. 2, the whole integral formed by the rod 11, the slide 14, the posterior appendage 19 and the yoke 58 arrives in the front limit position, in which the posterior appendage 19 is placed immediately behind the prior appendix 9, the pistons 23 occupy with respect to the syringe bodies 24 a position corresponding to maximum emptying of the latter.

 If component 2 must be reused, it is then possible without difficulty to bring the whole unitary formed by the rod 11, the slider 14, the posterior appendage 19 and the yoke 58 into the rear limit position illustrated in FIG. 1, to the extent where this all integral can slide freely with respect to the all integral formed by the barrel 7 and the anterior appendage 9, before replacing the component 3 which has just been used with a new component 3 or, depending on the case, reloading the syringes 25 by respective component.

 The device according to the invention 1 which has just been described in the context of the application of a biological glue in the form of a cord or studs, by means of an appropriate dispensing head 48, can be easily transformed into a device comprising autonomous means 119 for dispensing a propellant gas for these components, by an appropriate dispensing head 70 then substituted for the dispensing head 48, in order to apply the adhesive in the form of a film. By way of nonlimiting example, the gas propellant used can be a fluorocarbon gas, such as CFCll or CFC14, the joint presence of a liquid phase and a gaseous phase, ensuring a substantially constant pressure to the latter, is obtained under a pressure low enough to be compatible with an aerosol presentation, in a reduced volume and in a tank 81 made of light alloy, of common type in the aerosol field.

 A device thus transformed has been illustrated in FIGS. 6, 8, 9, FIG. 7 illustrating the autonomous means 119 for dispensing a propellant gas, and which can be easily attached to the device 1 which has just been described, while the FIG. 10 illustrates the corresponding alternative embodiment of component 3.

 We find in Figures 6, 8, 9, 10 the same reference numerals as in Figures 1 to 5, the device according to the invention which has just been described with reference to these figures remaining unchanged if we except the substitution of the dispensing head 70 to the dispensing head 48 and the mounting of the autonomous means 119 for dispensing a propellant gas.

 Therefore, we will limit ourselves, with reference to Figures 6 to 10, to a description of this dispensing head 70, in itself known, and of these autonomous means 119 for dispensing a propellant gas and, as regards the others parts of the device illustrated in FIGS. 6 to 10, reference will be made to the description of the device illustrated in FIGS. 1 to 5.

If we refer to the position that the dispensing head 70 occupies when the two components 2 and 3 are mutually assembled, this dispensing head 70, suitable for simultaneously dispensing not only the glue components contained in the respective syringe bodies 24 , but also a propellant for these components, with the application of a venturi effect to both of them, comprises
- towards the rear, two tubular inlet end pieces 71, oriented longitudinally and juxtaposed transversely, in mutually symmetrical positions with respect to plane 5, each of these end pieces 71 being fitted onto the tubular channel 31 of a syringe body 24 respective, by the frustoconical outer peripheral face 32 of this tubular channel 31, in an integral but removable manner; like the inlet end pieces 50 of the dispensing head 48, these inlet end pieces 71 advantageously bear, forwardly, on the shoulders 66 of the edges 64 of the barrel 7
- towards the front, two outlet nozzles 72 respectively for one and the other of the glue components, these outlet nozzles 72 being mutually symmetrical with respect to the plane 5 and placed cantilevered towards the front relative to the barrel 7 as shown in FIGS. 6 and 8, in a transverse orientation such that they open opposite a longitudinal geometric extension not referenced from the face 8 of the barrel 7
- two mutually independent channels 73 arranged inside the dispensing head 70 for mutually connecting a respective inlet nozzle 71 to a respective outlet nozzle 72
- A tubular nozzle 79 of propellant inlet, oriented transversely, along the plane 5, projecting opposite the barrel 7 relative to the dispensing head 70, that is to say in an orientation opposite to that outlet nozzles 72, between the latter and the inlet tubular ends 71
- two nozzles 75 for propellant spraying, mutually symmetrical with respect to plane 5 and turned longitudinally forward, immediately behind each respective nozzle 72 and between this nozzle 72 and the longitudinal geometric extension, not referenced, of the face 8, these two nozzles 66 being housed respectively in one and the other of the troughs 69 remaining between the tab 68 and, respectively, one and the other of the flanges 64 of the barrel 7 while the dispensing head 70 has between them, in direct extension of the nozzle 79 of the propellant inlet, a transverse spacer 80 pressing forward against the tab 68
- A branched channel 76 inside the dispensing head 70 and in particular at the spacer 80 and connecting each of the nozzles 75 to the nozzle 79 of the propellant gas inlet.

 The dispensing head 70 is advantageously made in a single piece of synthetic material; it is symmetrical with respect to plane 5 when components 2 and 3 are mutually assembled and, when component 3 is presented in sterile packaging 4 as illustrated in FIG. 10, each of the syringe bodies 24 containing the respective component glue, can be an integral part of this component 3.

 Naturally, the tubular end piece 79 of propellant gas inlet can be connected, as is known per se, to propellant gas supply means independent of the device according to the invention 1 but, preferably, it is further equipped for this purpose autonomous means 119 which will now be described, which allows the practitioner to control himself, according to his needs, both the supply of propellant gas and the output of the adhesive components .

 These autonomous means 119 could have many embodiments but, according to a currently preferred embodiment, illustrated in isolation in Figure 7 and in the assembled state with the device according to the invention 1 in Figures 6, 8, 9, it comprises an auxiliary cradle 120 capable of being secured at will with the main cradle 38, preferably detachably in particular if the auxiliary cradle 120 is intended to be reused while the main cradle 38 is intended for single use; this auxiliary cradle 120 carries on the one hand a reservoir 81 of propellant gas, preferably assembled to the auxiliary cradle 120 in a removable and interchangeable manner if the latter is intended to be reused, and a trigger 82 making it possible to control, at will, the supply of propellant gas to the dispensing head 70 or the interruption of this supply.

 With a view to receiving the auxiliary cradle 120, as shown in FIGS. 9 and 10 and as also shown in FIGS. 3, 4, 5, the main cradle 38 present in its face 42, between the grooves 43 for latching the bodies syringe 24, a longitudinal slot 83 arranged along the plane 5 and extending from the proximity of the lights 46 to the proximity of the blind hole 61; in front of the latter is arranged in the face 42 of the main cradle 38, also between the grooves 43 and along the plane 5, a lumen 84 passing through for the trigger 82, which lumen 84 passes through the main cradle 38 ~ to its face 41 and further opens forward into the edge 40; if we assume the cradle 38 assembled to the barrel 7, in the extension of this light 84 is arranged in the latter another light 85 for passage of the trigger 82, this light 85 passing through the barrel 7 right through 67, along the plane 5, to lead forward into the face 20 of the anterior appendage 9.

 The auxiliary cradle 120 has meanwhile, projecting relative to a flat face 86 intended to be applied flat against the face 42 of the main cradle 38, between the grooves 43 thereof, a socket tab 87 having a shape complementary to that of the slot 83 so as to fit into the latter, in a manner suitable for making the preferably removable attachment of the auxiliary cradle 120 with the main cradle 38, when the face 86 of the auxiliary cradle 120 rests on the face 42 of the main cradle 38. The auxiliary cradle 120, thus assembled to the main cradle 38, then presents with respect to plane 5 the same inherent symmetry as the components 2 and 3 of the device 1, previously described.

 It is with reference to this state of assembly of the auxiliary cradle 120 with the main cradle 38 of the component 3 itself assembled with the component 2 that the description of the autonomous means 119 for continuing to deliver a propellant gas will be continued.

 In this state of assembly, the trigger 82 is disposed in front of the tab 87, along the plane 5, and forms with respect to the face 86 of the auxiliary cradle 120 a projection in the direction 67 as well as, slightly towards the before so as to pass freely through the passage lights 84 and 85 arranged respectively in the main cradle 38, on the one hand, in the barrel 7 and the anterior appendage 9, on the other hand, and so as to present an extreme zone 88 placed projecting towards the front, with respect to the face 20 of the latter in a limit position illustrated in FIGS. 6 and 7, this end zone 88 being however capable of being pressed, towards the rear, by means of the index 113 etîou middle finger 57 of the hand of a user holding the device as described with reference to Figures 1 to 5, to gain another limit position in which this end zone 88 is at least partially retracted to inside the light 85.

 A pressure thus applied towards the rear at the end zone 88 of the trigger 82 can result in a retraction of this zone 88 towards the rear, in the lumen 85, due, on the one hand, to a appropriate conformation of the latter and, on the other hand, of a mounting of the trigger 82 at pivoting, about an axis 89 perpendicular to the plane 5, relative to the auxiliary cradle 120 and more precisely inside a base 90 of the latter, this assembly however constituting only a nonlimiting example.

 This base 90, delimited towards the main cradle 38 by the face 86 and integrally carrying the tab 87 behind the trigger 82, has a generally flat shape perpendicular to the plane 5 along which it is arranged, and elongated longitudinally.

 In front of the tab 87, it is pierced right through perpendicular to its face 86, along the plane 5, of a slot 91 also flat perpendicular to the plane 5 and in this slot 91 is engaged an area 92 of articulation of the trigger 82, which zone 92 also has a flattened shape perpendicular to the plane 5, as does the end zone 88 of the trigger 82; the axis 89 is intersecting with the slot 91 and along this axis 89, the slot 91 is traversed right through by a pin 93 also crossing right through the zone 92 of the trigger 82 to ensure the pivoting mounting of the latter , around the axis 89, relative to the auxiliary cradle 120.

 Opposite the end zone 88 relative to the hinge axis 89, the trigger 82 extends outside the slot 91, in the form of a fork 94, comprising two arms 95 which are mutually symmetrical with respect to the plane 5 and defining approximately a half-ring of revolution about a longitudinal axis 96, arranged along the plane 5 opposite the tab 87 relative to the base 90; the two arms 95 have, with reference to this axis 96, an angular development not referenced of less than 1800, and are arranged between this axis 96 and the base 90.

Thus, a pivoting of the extreme zone 88 of the trigger 82 towards the rear results in a movement of the fork 94 towards the front; under normal operating conditions of the device, these movements have respective low amplitudes so that the fork 94 must be considered to remain substantially transverse and of revolution around the longitudinal axis 96.

 Behind the fork 94, the auxiliary cradle 80 has means 97 for elastic snap-fitting of the reservoir 81, in the direction 67, onto the auxiliary cradle 120, these means being suitable for allowing longitudinal sliding of the reservoir 81 relative to the cradle auxiliary 120.

 Naturally, the elastic locking means 97 have a configuration closely adapted to the known configuration of the reservoir 81.

The latter is delimited externally by an outer peripheral face 98 cylindrical of revolution around the axis 96, if one refers to the snapped-in state of the reservoir 81, as well as by a bottom face 99 substantially planar, then perpendicular to axis 96 and facing back; towards the front, the peripheral face 98 has a localized narrowing forming an annular neck 100 of revolution around the axis 96 and is connected, by means of this neck 100, to an unreferenced mouth closed by a crimped plug 101 forming immediately in front of the neck 100 an annular shoulder 102, substantially planar, of revolution around the axis 96 and turned towards the rear. Following the axis 96, the plug 101 carries a tubular end piece 102, of revolution around this axis and partly projecting out of the tank 81 and partly inside the tank 81 where, in a manner known per se, it is mounted telescopically and cooperates with a valve 103 so that
- in the absence of any stress applied along the axis 96, in an antagonistic manner, to the reservoir 81 and to the nozzle 102 in the direction of penetration of the latter inside the reservoir 81, from d a stable position towards which the tubular end piece 102 is resiliently returned by a spring 104 associated with the valve 103, the latter being closed and thus opposing the outlet of the propellant gas from the reservoir 81,
- And that, by applying to the tubular nozzle 102 and to the reservoir 81, along the axis 96, a thrust in the direction of penetration of the nozzle 102 inside the reservoir 81, the valve 103 is opened to let the gas out of the tank 81, the interruption of the stress thus applied resulting in an automatic return to the relative position of the tank 81 and of the nozzle 102 corresponding to the closing of the valve 103, under the action of the spring 104.

 This technique is well known in the aerosol field, and does not require further description or illustration; it is described for example in British patent application No. 2,024,956.

 To receive a reservoir 81 thus shaped, the latching means 97 comprise, in the example illustrated, behind the fork 94, a shell 105 essentially consisting of a tubular wall advantageously made in one piece of a metal alloy or a synthetic material with the base 90, of which it is integral, and with the tab 87, with a thickness sufficiently small so that this tubular wall is semi-rigid while the base 90 and the tab 87 are rigid; this tubular wall has a shape of revolution around the axis 96, and delimited respectively towards this axis and in the direction of a distance from it by peripheral faces respectively inner 106 and outer l07 cylindrical of revolution around this axis, with an angular development a few degrees greater than 1800 and a diameter of the inner peripheral face 106 substantially identical to that of the outer peripheral face 98 of the reservoir 81, to allow the latching of the latter by means of a slight elastic deformation of the wall forming the shell 105. Like the whole of the auxiliary cradle 80, the shell 105 thus formed is symmetrical with respect to the plane 5 and thus has, between two longitudinal edges 108 of the wall constituting it, an opening 109 turned to the opposite direction 67 to allow the introduction of the reservoir 81 into the shell 105 by a movement in this sen s 67.

 Respectively forwards and backwards, the wall delimiting the shell 105 is defined by edges 110, 111 planes, transverse, with respect to which the tank 81 has cantilevered areas, respectively near its bottom face 99 and near the neck 100, which is disposed in front of the edge 111 and in which the fork 94 of the trigger 82 engages behind the shoulder 102 of the plug 101; thus, a movement of the extreme zone 88 of the trigger 82 towards the rear relative to the anterior appendage 9 results in a longitudinal translation of the bottle 81, as a whole, relative to the auxiliary cradle 80.

 On the tubular end piece 102 of the tank 81 is fitted in a solid but removable manner, with a view to the interchangeability of the tank 81, a rigid tubular connection 112 which extends it coaxially forwards in a solid way, along the axis 96, and this tubular connector 112 is connected to itself forwardly, in a solid and durable manner, at one end of a flexible tube 113 furthermore having another end durably secured to a tubular connector 114, for its part fitted or screwed together but removably on the nozzle 79 of propellant gas inlet of the dispensing head 70 when the two components 2 and 3 and the auxiliary cradle 80 are assembled for the commissioning of the device; the tubular end piece 102 of the reservoir 81, the tubular connection 112, the flexible tube 113 and the tubular connection 114 thus constitute a connecting pipe between the tank 81 and the dispensing head 70, and the valve 103 interposed in this connecting pipe to the level of the tubular end piece 102 normally closes this connecting pipe, but opens it when a stress is applied, along the axis 96, to the reservoir 81 and to the end piece 102 in the direction of penetration of the latter inside the tank 81.

 To allow a translation of the reservoir 81 towards the front, under the action of the trigger 82, results in a stress on the end piece 102 in the direction of penetration inside the reservoir 81, the connector tubular 112 integrally has a flat, transverse collar 115 which in particular forms two transverse shoulders 116, facing forward, respectively on either side of the axis 96 in a transverse direction perpendicular to the plane 5; the flange 115 is engaged closely, at least if one refers to a longitudinal direction, by interlocking in the direction 67, inside a yoke 117 symmetrical with respect to the axis 5 and integral with the base 90, in front of the fork 94 and opposite the leg 87; in particular, each transverse shoulder 116 bears forwards against a respective transverse shoulder 118, turned towards the rear, of the yoke 117.

 Thus, if one prints by means of the trigger 82 a forward translation to the reservoir 81, its tubular end piece 102 cannot accomplish the same movement insofar as it is retained against it by the stop of the transverse shoulders 116 forwardly against the transverse shoulders 118, so that it penetrates inside the reservoir 81 and causes the opening of the valve 103, that is to say the supply of the dispensing head 70 with gas propellant; when the thrust applied for this purpose is then interrupted, towards the rear, at the end zone 88 of the trigger 82 relative to the anterior appendage 9, the action of the spring 104 which pushes the end piece 102 towards the outside of the tank 81 causes, due to the support of the shoulders 116 towards the front against the shoulders 118, a longitudinal translation of the tank 81 in return, towards the rear, which causes by pressing the shoulder 102 towards the rear against the fork 94 the return of the trigger 82 to a position in which its end zone 88 forms a projection forward with respect to the anterior appendage 9.

 It is easily understood that the projection of propellant gas by the dispensing head 70 can be controlled without difficulty, by the practitioner holding the device according to the invention 1, according to his needs.

It is advantageous, in this respect, to give the projection that the anterior appendage 9 forms with respect to the barrel 7, along the plane 5, a value sufficient to allow the index 118 and the major 57, and on the other hand limiting the value of the projection that forms along plane 5, relative to the barrel 7, the end zone 88 of the trigger 82 to a value such that only the index 118 is placed opposite , which allows the user to more effectively modulate, as required, the supply of the distributor head 70 with propellant gas from the reservoir 81.

 Naturally, such an embodiment of the autonomous means 119 for dispensing a propellant gas by the dispensing head 70 is only a non-limiting example of the realization of such means, and the same is true, more generally, of the provisions which have been described with regard to components 2 and 3 of the device according to the invention 1.

 In particular, it could be conceived that the main cradle 38, presented as dissociated from the barrel 7, is in fact produced in one and the same piece with the latter, on which the syringe bodies 24 would then be directly snapped on or could even if necessary, be made in one piece; it could also be the same for the auxiliary cradle 120, which could be produced in a single piece with the main cradle 38 and, if necessary, with the barrel 7.

Claims (26)

 1. Device for applying an extemporaneous mixture of several components, having a determined longitudinal direction of reference (6) and comprising  as many longitudinal syringe bodies (24) as there are components, the syringe bodies (24) being mutually juxtaposed transversely and having respective end channels forward (31), mutually juxtaposed transversely and mutually united in a dispensing head ( 48, 70), for the exit of respective components and towards the rear of the respective end passages (29), mutually juxtaposed transversely, for respective pistons (23),  - as many pistons (23) as there are syringe bodies (24), the pistons (23) penetrating into respective syringe bodies (24) through the respective passages (29), being capable of sliding longitudinally in the respective syringe bodies (24) between a rear limit position and a front limit position and having towards the rear, outside the syringe bodies (24), respective ends (pushers 37) mutually juxtaposed transversely,  - a main longitudinal cradle (38) mutually connecting the syringe bodies (24) integrally,  - a transverse yoke (58) mutually connecting the respective ends (plunger 37) of the pistons (23) so as to allow the pistons (23) to slide in unison, in particular forward, in the syringe bodies ( 24) respective,  means (10, 11, 13, 14) for guiding the yoke (58) in longitudinal translation relative to the main cradle (38),  characterized in that the main cradle (38) integrally carries an anterior appendage (9) projecting in a determined transverse direction (67) from a determined longitudinal plane (5), in that the yoke (58) carries integrally a posterior appendage (19) projecting in said transverse direction (67) of said longitudinal plane (5), the posterior appendage (19) being located behind the anterior appendage (9) when the pistons (23) occupy said front limit position as when they occupy said rear limit position and in that, when the pistons (23) occupy said rear limit position, the posterior appendage (19) is located at a distance (L) from the anterior appendage (9) such that one can then engage the index (118) and / or middle finger (57) with one hand in front of the anterior appendix (9) and the thumb (22) with the same hand in rear of the posterior appendage (19) to move the pistons (23) to said front limit position by a m hand closing opening.  2. Device according to claim 1, characterized in that the anterior appendage (9) and the posterior appendage (19) have in said longitudinal plane (5) a generally concave shape respectively towards the front and towards the rear ( sides 20 and 21).  3. Device according to any one of claims 1 and 2, characterized in that said longitudinal plane (5) constitutes a mean plane of general symmetry for the device ~~ (1).  4. Device according to any one of claims 1 to 3, characterized in that the syringe bodies (24) are two in number, disposed respectively on either side of said longitudinal plane (5), as are pistons (23).  5. Device according to any one of claims 1 to 4, characterized in that the means (10, 11, 13; 14) for guiding the yoke (58) are arranged on the one hand on the yoke (58) and d on the other hand on the previous appendix (9).  6. Device according to claim 5, characterized in that the means (10, 11, 13, 14) for guiding the yoke (58) comprise a longitudinal rod (11) integral with the yoke (58), forming a projection towards the front with respect to it and having a predetermined current cross section which is substantially constant, and a longitudinal shaft (7) integral with the anterior appendage (9), forming a rearward projection with respect to this and defining a longitudinal channel (10) having a substantially constant current cross section, complementary to said cross section of the rod (11) so as to receive and guide the latter in longitudinal sliding, and in that the rod (11) carries the posterior appendage (19), the channel (18) being open in said transverse direction (67) by a comparatively narrowed longitudinal slot (13) allowing the connection of the rod (11) with the posterior appendage (19) and having dimes Longitudinal nions suitable for allowing a longitudinal displacement thereof compatible with the passage of the pistons (23) from one to the other of the posterior and anterior limit positions respectively.  7. Device according to any one of claims 5 and 6, characterized in that the yoke (58) and the anterior appendage (9) have means (16, 17, 18) of mutual stop defining one and the other of the posterior and anterior limit positions respectively.  8. Device according to any one of claims 5 to 7, characterized in that the main cradle (38) and the ends (pushers 37) of the pistons (23) are removably and interchangeably connected to the anterior appendix respectively ( 9) and the yoke (58).  9. Device according to claim 8, characterized in that the main cradle (38) is fitted in said transverse direction (67) on the anterior appendage (9).  10. Device according to claim 9, characterized in that the yoke (58) is in free longitudinal support, towards the front, against the ends (pushers 37) of the pistons.  11. Device according to any one of claims 1 to 10, characterized in that the dispensing head (48, 70) is removably and interchangeably connected to the syringe bodies (23).  12. Device according to claim 11 in combination with any one of claims 9 and 10, characterized in that the dispensing head (48, 70) is fitted in said transverse direction (67) on the anterior appendage (9).  13. Device according to any one of claims 1 to 12, characterized in that it comprises autonomous means (119) for dispensing a propellant gas for the components by the dispensing head (70).  14. Device according to claim 13, characterized in that the autonomous means (119) for dispensing a propellant gas comprise a reservoir (81) of propellant gas, an auxiliary cradle (120) integral with the main cradle (38) and carrying the reservoir (81) of propellant gas, means (102, 112, 113, 114) for connection between the reservoir (81) of propellant gas and the dispensing head (70), a valve (103) interposed in the connection means (102 , 112, 113, 114), and means (82, 117), carried by the auxiliary cradle (120), for opening or closing the valve (103) at will.  15. Device according to claim 14, characterized in that the propellant reservoir (81) is detachably and interchangeably connected to the auxiliary cradle (120) and the connecting means (102, 112, 113, 114) are connected removably to the gas tank (81) and / or to the dispensing head (70).  16. Device according to any one of claims 14 and 15, characterized in that the auxiliary cradle (120) is removably and interchangeably connected to the main cradle (38) and the connecting means (102, 112, 113, 114 ) are removably connected to the gas tank (81) and / or to the dispensing head (70).  17. Device according to claim 16, characterized in that the auxiliary cradle (120) is fitted in said transverse direction (67) on the main cradle (38).  18. Device according to any one of claims 14 to 17, characterized in that the means (82, 117) for opening or closing the valve (103) at will comprise a trigger (82) disposed immediately in front of the appendix anterior (9), along said longitudinal plane (5), and movably mounted relative to the auxiliary cradle (120) between a limit position for closing the valve in which it protrudes forward relative to the anterior appendage (9) and a limit position for opening the valve in which it is retracted towards the anterior appendage (9), and means (104) for elastic return of the trigger (82) to its position for closing the valve (103).  19. Device according to claim 18, characterized in that the trigger (82) is mounted to tilt relative to the auxiliary cradle (120), between its limit positions respectively of closing and opening of the valve, around an axis tilt (89) oriented perpendicular to said longitudinal plane (5).  20. Device according to claim 19, characterized in that the tilting axis (89) is located between the trigger (82) and the reservoir (81) of propellant gas, in that the reservoir (81) of propellant gas is longitudinally oriented and mounted for longitudinal sliding relative to the auxiliary cradle (80) and has a valve control end piece (102) forward (103) capable of occupying two respectively closed limit positions relative to the propellant tank valve and valve opening and resiliently biased (spring 104) towards its limit valve closing position, its limiting valve closing position being shifted forward, relative to the limit valve opening position, in that the auxiliary cradle (120) comprises means (117) for longitudinal immobilization of the end piece (102) for controlling the valve and in that the trigger (82) bears integrally, opposite the tilt axis (89), means (94) for applying a forward thrust to the reservoir (81) of propellant gas when the trigger (82) passes from its valve closed position to its valve open position.  21. Device according to claim 20, characterized in that said means (94) for applying to the reservoir (81) of propellant gas a thrust forward comprising a transverse fork (94) integral with the trigger (82), at the 'opposite of the latter relative to the pivot axis (89), and engaged with a transverse neck (100) to the reservoir (81) of propellant gas.  22. Device according to any one of claims 18 to 21, characterized in that the auxiliary cradle (120) is arranged opposite the anterior appendage (9) relative to the main cradle (38) and in that the main cradle (38) has means (84) for passing through the trigger (82).  23. Assembly of a main cradle (38) as defined in any one of claims 8, 9, 16, 17, 22, of syringe body (24) integral with this main cradle (38) and pistons of syringe (23) engaged in the syringe bodies (24) respectively.  24. The assembly of claim 23, further comprising a head (48, 70) dispensing mixture, integral with the syringe bodies (24).  25. An assembly according to any one of claims 23 and 24, characterized in that the pistons (23) enclose respective components of an extemporaneous mixture in the respective syringe bodies (24).  26. An assembly according to any one of claims 23 to 25, characterized in that it is sterile (packaging 4).