FI111815B - Liquid media diverter - Google Patents

Description

111815

Discharge device for fluids Application range and previous designs

The invention relates to a fluid discharge device having a base housing for a fluid reservoir and a plunger pump, wherein the pum-5 piston is moved between an initial position and a pump stroke end position, and a pump chamber connected to the device outlet with .

WO 91/13689 discloses a discharge device for discrete use as partial shots according to the preambles of claims 1, 12 and 14.

Such a discharge device is described in EP 311 863 (= U.S. Patent 4,964,069). Its patent specification discloses and illustrates the scope of the invention for a pump cylinder and a flexible response constructed as a quick-lock device 15 which operates to provide a certain operating pressure prior to impact, whereby the fluid is discharged at a certain minimum force and speed.

This construction ensures that, for example, when spraying, the fluid in the first stage is sufficient for spraying and that the pump operates to its extreme limit, that is to say perfect: the entire contents of the stroke and its fluid reservoir are sprayed. Such single or double dose delivery devices are advantageous for the administration of drugs which are well-administered, highly perishable, carefully preserved, and have other characteristics.

WO 92/00812 also discloses the use of liquid containers for a single discharge stroke, wherein these containers are closed by a stopper which simultaneously acts as a piston and is pierced by a needle for use. The fluid reservoir is • · [..I, located in a sleeve having external projections operatively associated with corresponding projections within the base body as a quick lock. When using the device, it must first be possible to eliminate the static friction before such projections slide on their contact surfaces so that a certain pressure point must be exceeded.

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Task and solution

It is an object of the invention to further develop such a discharge device specifically to prevent accidental double use or incomplete operation and to eliminate the resulting pollution or dosing problems.

The set objects are achieved by a discharge device according to the invention, which is characterized in what is stated in the characterizing parts of claims 1, 12 and 14.

According to an embodiment of the invention, the tamper-proof closure according to the invention can be made from at least one material bridge 10 between at least one pump part moving with the pump cylinder and a housing part connected to the base body. The material bridge is preferably made in one piece in connection with the housing and pump structure.

Therefore, a predetermined breaking point is formed between the moving parts of the discharge device, whereby the point of staying at this point is a clear indication that the contents of the fluid container have not been "tampered" with or used. The user of the device can observe this, for example, optically or by turning the drive part slightly. To facilitate inspection, window openings or pump parts may be made of transparent material. It is also possible to use a plastic material which changes color as the part is deformed and deformed. The moving part and the case may also be marked accordingly. The material bridge is preferably formed with a drive sleeve, in which • · the pump cylinder can be alternatively placed and acts as a fluid reservoir, and *; * 'Between the inside of the base case with drive shoulder blades. The drive shoulders serve as a support for two fingers, with the thumb squeezing the drive sleeve. Thus, sufficient force can be applied to it to break or tear the material part. Due to the applied force at the same time, sufficient power is obtained to operate the pump reliably.

The material bridges can be made, for example, by pressing it on the outer periphery of the drive sleeve and between the sleeve and the ring around it, which is in turn secured. Therefore, the drive sleeve can be made separate from the housing. However, the material bridges can be: · 'also formed on the housing and the circular fastener can be fastened to the front, the movable part, the pump cylinder or the drive sleeve with a gripping structure--. tea or otherwise.

According to an embodiment of the invention, the part formed in the pump section as material bridges closes the housing from the outside of the projection.

111815 3 In this case, the part completely covers the connection gap between the pump part and the housing and provides both optical and functional connection between the pump part and the housing, but also prevents any tampering attempt to detect unauthorized use. The quick connection is preferably arranged so that it cannot be pulled out 5, so it will break if someone tries to pull the pump cylinder out of the housing. In this case, the material bridges and the tamper-proof closure will break.

It is strongly recommended that this portion be an L-shaped ring having an approximately radially shaped lower-10 ring portion and a casing adjacent thereto. Preferably, the inner surface of the jacket has a quick-release profile. The quick release profile may be associated with a functionally shaped profile which is likewise in the form of a quick lock in the projection formed in the ring or tire segment.

These and other structural features of the invention will be apparent from the claims, description, and drawings, and discrete structural features, which may be solitary or subassemblies, may be embodied in one embodiment and other areas of the invention and provide advantageous, individually patented, structures.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings, Figures 1-5 illustrate an understanding of the invention in order to improve the understanding of the prior art structure of the present invention to clarify the basic structures adapted to the present invention.

• · · '. * ·: Figure 1 is a longitudinal section through an extractor equipped with a tamper-indicating closure i * *':.

25 Figure 2 shows the direction of the arrow II in Figure 1.

;. Figure 3 is a detail view of Figure 2.

Figure 4 is a section along line IV of Figure 2.

Fig. 5 is a partial longitudinal section through a discharge device with permit- • · '..! a locking ring indicating the use.

A preferred embodiment of the invention will be described in more detail below with reference to Figures 6 and 7 of the drawings, in which: Figure 6 is a longitudinal section through the structure of the invention and Figure 7 is a plan view of the structure of Figure 6.

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structure Description

The discharge device 11 shown in Figure 1 has a two-piece base body 12. The body 12 has a bottom housing portion 13 in the form of a strap having two drive shoulders 14 and an associated sheath 15. The bottom housing portion 5 is flat or oval and has a maximum length and its smaller dimensions are again in the transverse direction. The sheath 15 is longer on the left and right sides of Figure 1 and has a cut 16 approximately parallel to the plane of the drawing on both sides, which is open at its base.

The drive housing 17 is injection molded in a single piece into a drive sleeve 17 which is located at its lower end inside the connector 18, which faces upwardly from a portion 13. The one-piece connection between the drive housing 13 and drive sleeve 17 takes place on material bridges 19 as shown in FIGS. The gap 20 between the outer flange 21 of the drive sleeve 17 and the inner flange projection 22 on the inside of the connector 18 is covered by three connecting flanges of triangular shape with a tip formed in the flange 22 to form predetermined breaking points. From a manufacturing point of view, due to their small recesses, which barely exceed the dimensions of a normal burst, they can be formed at the interface between two injection molded parts 20 and form a space 23 on top of sheath 15 and space on connector 18 respectively. the material bridges 19 disposed are in a plane formed from the top by the inside and bottom of the drive shoulder and by the upper edge of the flange 21.

The drive sleeve 17 has internal projections 24 having a length of about 25% of the length of the sleeve, measured from the base 25 of the sleeve. The sleeve is supported by a cylindrical bottom 26 of a pump cylinder 27 and a closed glass sleeve with; at the upper end is a flange 28. It simultaneously forms a reservoir for metering fluid 29 and a pump cylinder. Its inner peripheral surface thus forms a piston i '·': a conductor 30 for the piston 31 and is made of a rubber or similar plastic piston:; 30 plugs. It is a longitudinal section of an H-shaped, thick-walled tube, l f i 1, the outer sheath of which is formed by a piston flange 32 'in the middle of the piston guides; j; when closing transversely, the inner part of the tube so that the upper and lower parts '* ..' which engage the closure flange 32 are provided with recesses 33, which may be approx. · Cone-shaped.

35 The piston rod 31 is in a hermetically sealed fluid 29. Filling occurs with or without air. The pump cylinder is inserted into the 111815 5 by slightly squeezing the upper end of the drive sleeve, and its major portion extends over and behind the drive shoulders 14 through the connector 18 and further into the connector portion 34, which may also be made as a connector. It is a finger-like part having an approximately cylindrical or slightly conical shaft having an upper end 5 having a spherical rounding in the direction of the pump shaft 35. In the center of the rounding is an outlet 36, which is a conventional spray nozzle. The outlet may also be made for other delivery material, for example, for dispensing a liquid or paste, or it may also have a different shape to better fit the opening of the body. Therefore, it is also preferred that the connector portion 34 is made separate from the base housing portion and secured thereto by a quick-release fastener 37, for example three flanges that enter the openings and are provided with a mandrel so that the quick release fastener can be centered. itselukit-finely adjusted to suit. The protective sleeve 38 protects the connector member from contamination.

The inside of the connector portion has a piston rod portion 39 having an internal drainage passage 40 and inserted into a sleeve 41 which is shaped inwardly at the upper end of the connector portion 34. The piston rod portion 39 has a shank 42 that is bevelled downwards, a hollow steel needle, for example, which is injection molded and pressed into an opening provided with corresponding securing projections.

With the exception of the steel needle 42, the piston rod 31 made of rubber material, and the glass pump cylinder / fluid reservoir, all pump parts are plastic injection molding parts.

In manufacturing a component around the bottom housing portion 13 and the drive sleeve 17, the pump cylinder 27 is inserted from above into a container 43 formed in the drive sleeve 17. The cylinder 27 has a fluid 29 which is sealed i * .. by the piston rod 31.

Then, a connector part which is pre-mounted on the piston rod part and impact piston 42, which is connected to the bottom housing part and is fastened: ·, ·, is fastened with the quick-release fastener 37. Thus, after the protective sleeve 38 is attached. To actuate the device and remove the protective sleeve 38 from the user, the device is taken between three fingers, with two fingers resting on the shoulders 14 and the thumb resting on the bottom of the actuating sleeve 17. The thumb grips the window aperture 16 so that there is sufficient drive clearance. The outlet 36 is directed to the corresponding point and the operating sleeve is pressed firmly with the operating pressure '! *. 35 becomes so large that the predetermined breaking points formed by the material bridges 9 are broken and the drive sleeve can be displaced upwards with the pump cylinder 111815 6. Due to the past high pressure, this happens at high speed, which guarantees a quick discharge stroke. The pump pusher cylinder moves upwardly against the percussion piston 42 so that it passes through the central part 32 of the piston rod, but due to the resilience 5 of the piston rod material, its outer surface is immediately closed. Only through the inner passageway of the percussion piston constructed as a hollow needle, fluid can pass upwardly through the outlet passage 40 and the outlet port 36 and is injected therein in a spray or metered manner. The lower edge of the piston rod portion 39 may contact the upper surface of the piston rod 31 and thereby provide a direct pressure connection with the piston which moves downwardly along the piston guide portion 30 and transfers the fluid to be treated to the outlet. The length of the needle should be such that the needle does not extend over the lower edge of the plunger rod 31 so that in some cases a very expensive medium can be removed almost completely.

Thus, the burner can dispense sensitive and expensive materials 15 in a planned and metered manner. An unauthorized shutter can be used to continuously monitor the integrity of the device while ensuring that the substance is completely discharged at a sufficient operating pressure. The device is easy to manufacture and can also be used easily in a variety of operating conditions, for example with different connector designs. After using the device 20, the unit having the pump cylinder 27 and drive sleeve can be pulled down, if desired. A pump comprising a pump piston 31; the pusher barrel 27 may be removed so that the remainder of the device, other than a small needle, made of only one material, alternatively '·' plastic, may be discarded.

Figure 5 is a longitudinal section through one portion of a device in which the portion 13 and the connecting portion are made in one piece. The same reference box numbers will be used for like parts and for the parts and their function, see the previous description.

The drive sleeve 17 comprising the container 27 is formed on its outer surface. 30 is a fastening member 60 which is a circular ring and has an L-shaped cross-section.

It is connected to the drive sleeve 17 by a plurality of material bridges which are constructed and dimensioned so as to tear under the operating pressure and thereby release the tire from the drive sleeve. Attachment 60, drive sleeve 17 and material bridges are.:. injection molded plastic in one piece.

The fastening member 60 is secured to the housing 13 by a quick connection 61. The fastening member is centered such that its axial foot engages the inner 111815 7 of the connecting member 35 while its outwardly engaging foot engages in a recess at the transition between drive shoulder 14 and connector 34.

When assembling the device, the drive sleeve is fitted with the container 27 which forms the pump cylinder. With the mounting tool, the lower gripping surface of the drive member 60 shown in Fig. 5 can be squeezed so that the locking engagement 61 is performed without damaging the tamper-evident closure formed by the material bridges 19. However, if the user moves the sleeve upwards, the material bridges 19 will rupture and the drive sleeve with the pump cylinder / container 27 may perform the pump stroke as described above. The drive sleeve 17 is guided from above in the circular fastening portion 60 (between the torn material bridges) and on the other hand in the inner flanges 62 of the connector portion 34. Material bridges 19 may also be formed as incisions or membrane connections.

15 The fastening element 60 has a certain axial and radial clearance at the locking connection 61. It is therefore possible, either intentionally or accidentally, to rotate the drive sleeve 17 without breaking the closure indicating unauthorized use. However, the locking connection must be strong enough so that when pulling down the drive sleeve, the closure indicating unauthorized use is ruptured. This ensures that the contents of the dispenser are not touched.

; Thus, a tamper-evident closure has been developed which, in order to open the fluid reservoir 27, requires a greater breaking force of material than when using a simple needle. This is promoted by the guide flange • »|; : 47 and frictional force between the retaining tabs 44, which, when static friction is canceled out:.: 25, becomes slip friction, thereby releasing a large part of the propulsion force and: · canceling the other resistors.

Figs. 6 and 7 show a preferred structure corresponding to the structure and function of Fig. 5. The same • '· 1; parts with the same reference numeral and with reference to their parts and their function. · · ·. 30 in previous reviews.

The member 60, which is connected to the drive sleeve 17 by the material bridges 19, has a ring of "·· *." L-shape. Thus, it has a bottom ring 70 having on its inner side material bridges 19 which connect the bottom ring 70 which is connected as a fixed structure to the drive sleeve 17. The casing 71 is parallel and flat, ···. 35 Manceskic with sleeve 17. The inner surface of the sheath 71 has a locking profile 111815872, which may be, for example, a barb ring (see enlarged details in the dotted circle of Figure 7).

The portion 60 covers the housing projection 61 which is a ring and is located around the center opening 74 of the housing where the pump cylinder 27 and its drive sleeve 17 5 are located. The projection 61 extends downwardly from the housing 13. The projection 61 may be a ring or tube, or it may consist of a plurality of segments arranged as a ring. Its outer surface has a counter profile 63 corresponding to a sheath locking profile 72.

Its locking function is arranged such that when installing the unit 10 which operates the sleeve 17 / pump cylinder 27 in the housing opening 74, the part 60 is secured in place by providing a quick lock to the housing projection 61, thereby covering it. The locking is such that the material bridges are not overloaded during locking. However, if a force is applied in the opposite direction that can cause the drive sleeve 17 to move downward, the barbed shape of the locking-15 devices 72, 73 will cause the material bridges to break, thereby making the promised use more clearly visible.

In the structure of Fig. 5, the housing has a housing casing 15 facing downward, while the structure of Figures 6 and 7 has operating shoulders 14 which are flat housing projections (Fig. 7) extending si-20 downwardly past the main body portion 34. No. . . are usually oval. This makes it easy to grasp the device with two fingers • · '; by pressing the thumb on the lower part of the drive sleeve 25. The projections 75, which are shown in Fig. 7, form a good grip and stiffener, in particular a circumferential edge 77, which faces upwards.

• · * i 25 This saves material without compromising the status of the device, which is important for a disposable product. In addition, the operating surface: the lower surface of the shoulder 14 may be used for marking, for example, a serial number. The drive sleeve 17 can also be used for labels or other visual signs.

In the outer circumference of the drive sleeve 17, a second annular part 76 is provided at a certain distance from the lower surface 63 of the part 70. In a manner similar to part 70, the second part 76 is also pressed in one piece with the drive sleeve 19b. 2-4.

However, they may be slightly stronger than the material bridges of Part 60.

. ···. 35 This design provides a double stroke ejector, for example an ejector or nebulizer device, capable of delivering two metered portions manually in succession. The ring portion 76 terminates after the first portion of the stroke corresponding to the distance a. At this end of this part of the impact, the driving force (back pressure of the fluid and so on) and the force required to break the material bridges are added together. As a result, it is unlikely that the user would accidentally spin 5 other rings.

After this stop, which is usually half the size of the stroke, the operator of the device can also break the material bridges 19b by applying additional pressure to the pump section. When the material bridges 19b are broken, the annular portion 76 contacts the contact surface 63 of the portion 60.

After the first part of the stroke of this two-stroke discharge device, the tank or pump cylinder 26 is open through the hollow needle 36. However, when using a nasal spray, this device is very advantageous because it delivers the drug sequentially but evenly to both nostrils. In this case, another attack will also prevent unauthorized use.

It should be noted that the structure of Figure 6 provides a closed and simple discharge device which is easy to use and pack.

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Claims (14)

A liquid medium dispensing device having a base body (13), which at least partially accommodates a pump unit and wherein the pump unit has a pump chamber which is connectable to a discharge port (36) via a discharge channel (40) and is provided with a pump cylinder ( 27) and a pump piston (31), the pump cylinder (27) forming the medium container, wherein the pump piston (31) is movably guided in the pump cylinder (27), the pump cylinder (27) being at least partially located in an operating sleeve (17), characterized in having a tamper evident closure which can be destroyed by an actuating force, and including at least one breakable material bridge (19) between the pump unit and the annular fastener (60), where the fastener (60) joins at least one material bridge (19) to the pump unit, and is applied to the base body (13) by surrounding an outer projecting portion (61) of the base body (13), and wherein cooperating snap device (72, 73) is provided at the outside of the protruding part (61) and on the inside of the fastener (60). Dispensing device according to claim 1, characterized in that the fastener (60) is a ring with an L-shaped cross-section, consisting of a bottom ring part (70) and a generally cylindrical sheath part (71). Dispensing device according to claim 2, characterized in that it further comprises at the inner side of the jacket part (71) a snap profile (72)]! cooperating with a corresponding shaped snap profile (73) at the outside of the protruding part (61). ); / 4. Output device according to any of claims 1 - 3, characterized in - | ·: 25 characterized in that the snap device (72, 73) is barbed-like and gives: · ·· a smaller pouring force in the snap-in direction than in a direction opposite thereto, in which * In the · opposite direction the pouring force is greater than a force for breaking the material bridge. (19), at least one seed. Output device according to any one of claims 1 to 4, characterized in that a guide for the pump part is formed by inner ribs (62) in the base body (13). Output device according to any one of claims 1 to 5, characterized in that the fastener (60) has a contact surface for a mounting tool, which exerts a force to engage the snap device ( 72, 73). • »111815 The dispensing device according to any of claims 1 to 6, characterized in that the material bridge (19), at least one such, is formed integrally with the actuating sleeve (17). The dispensing device according to any of claims 1 to 7, characterized in that it further comprises several material bridges essentially in one plane. The dispensing device according to any of claims 1 to 8, characterized in that the material bridge (19), at least one seed, is constructed in the form of a tip connected to a wall. Discharge device according to any of claims 1 to 9, characterized in that the pump unit has a marking, which cooperates with a marking on the base body (13) and which are mutually displaced during pump operation. Dispensing device according to any one of claims 1 to 10, characterized by a tamper evident closure, wherein the movable parts for actuation are fixed by said closure, and an output start position determined by the beginning of the medium dispensing, there is a game that indicates an idle path. A dispensing device displaceable medium having a base body (13) which at least partially accommodates a pump unit and wherein the pump unit has a pump chamber which is connectable to a metering opening (36) via a metering channel (40), and is provided with a pump cylinder (27) and a pump piston (31), the pump cylinder (37) forming the medium container, and the pump piston / (31) being movably controlled in the pump cylinder (27), characterized by having a first and a second tamper evident closure which; Can be destroyed by an actuating force including a first and a second means (60, 76), each having at least one breakable material bridge (19, 19b), the first and second means being arranged at a distance from each other say; the first means (60) permitting, after breaking its material bridges (19), a first partial blow of the pump piston (31), the first partial blow being cleared by the second means (76); and wherein after breaking the material bridges; (19b) for the second device (76) under increased actuation force, the pump piston is: (31) free of a second partial stroke. ··· 13. Discharge device according to claim 12, wherein the first device ***. (60) has a abutment surface on which the second member (76) abuts at the end of the first partial stroke. 111815 The dispensing device displaceable medium with a base body (13) at least partially accommodates a pump unit and wherein the pump unit has a pump chamber which is connectable to a discharge opening (36) via a discharge channel (40), and is provided with a pump cylinder (27) and a pump. A piston (31), wherein the pump cylinder (27) forms a medium container and is the food piston partially placed in a plastic operating sleeve (17), the pump piston (31) being movably guided in the pump cylinder (27), and the base body (13) has a central, generally cylindrical portion (34) having at its upper ends a shower nozzle (36) and at its lower end actuating and gripping shoulders (14) in the form of generally flat radially projecting portions of substantially larger dimensions in two directions opposite to each other but in a direction perpendicular to it, as shown by having a tamper evident closure which can be destroyed by an actuating force, including at least a breakable material elbow bridge (19) integrally with a fastener (60) and actuating sleeve 15 (17), the fastener (60) being a ring surrounding a projecting portion (61) on the outside of the housing and projecting from the underside of the grip shoulder frame (14) ) and the actuating sleeve (17) projects centrally through and far beyond the fastener (60). • · * • · a • · * <* • · · • · · * <i t «• *» * # • | «· *« * · • · »S <« • I I • ♦ · • · · «* I • · · • I t * * * · ti» f I I I I »·