KR19980702087A - Discharge device for fluid media - Google Patents

Abstract

A method for forming unsegregated metal oxide-silver composites includes preparing a precursor alloy comprising silver and precurser elements of a desired metal oxide and oxidizin the alloy under conditions of high oxygen activity selected to permit diffusion of oxygen into silver while significantly restricting the diffusion of the precursor elements into silver. Further processing of the metal oxide composite affords an oxide superconducting composite with a highly unsegregated microstructure. A novel precursor may be used in conjunction with the oxidation under conditions of high oxygen activing to further restrict segregation of metal oxide-silver composite. The composite may additionally include a matrix material for supporting the primary alloy phase and second phase disposed therein. The composite is oxidized to form an oxide superconductor composite.

Description

Discharge device for fluid media

Such a release device is disclosed in Applicant's European Patent 311 863 (= US Patent 4 964 069). In the context of this patent, a certain operating pressure must be applied by the user before the release of the partial stroke occurs, so that after overcoming this operating pressure the release of the liquid occurs at some minimum force and speed. An elastic stop is disclosed and protects against a pump cylinder and snap-locking means.

With this configuration, the pressure initially generated when spraying the medium is sufficient for spraying purposes and the pump moves to its final position to perform a complete stroke and at the same time the medium in the media container forming the pump cylinder is All will be released to the meeting administration. Such a device that releases a fixed amount of media once or twice is useful for drug administration, and is particularly important in terms of dose administration, contamination, preservation or other requirements.

Applicant's WO 92/00812 also uses a medium container for a single release stroke, which is sealed with a plug that also acts as a piston and the needle penetrates the plug for operational purposes. The media container is housed in a sleeve, which has an outer projection which is in snap fastening manner with the corresponding projection inside the casing base body. In order to use, the beads must first overcome the static friction before sliding on their mating surfaces, and thus must overcome certain pressures.

The present invention relates to a discharge device for a flowable medium having a base body for receiving a medium container and a thrust piston, wherein the piston pump comprises a pump piston movable between a starting position and a pump stroke end position; At the same time it comprises a pump chamber consisting of a pump cylinder containing the pump piston is connected to the discharge hole of the discharge device through the discharge channel.

1 is a longitudinal sectional view of an emitting device with interfering closures;

2 is seen from arrow II in FIG.

3 is a partial detail view of FIG. 2;

4 is a cross-sectional view taken along the line IV in FIG. 2.

FIG. 5 is a longitudinal partial cross-sectional view showing an embodiment of the present invention having an interferable closed ring. FIG.

6 is a longitudinal cross-sectional view showing another embodiment of the present invention.

7 is a top view of the embodiment of FIG. 12.

It is an object of the present invention to provide an improved release device which can prevent accidental dual use or incomplete operation and which can solve the problem of contamination and certain amount release.

An interfering closure body according to one embodiment of the invention consists of one or more material bridges disposed between one or more pump parts that can move with the pump cylinder and a casing part connected to the base body. This material bridge is preferably made in combination with the casing portion and the pump portion.

Therefore, a predetermined breaking point is generated between the parts of the ejection device in which relative movement is possible, and the intact breaking point means that the medium container is open and not used. The user can confirm this with the naked eye or by slightly turning the control panel. Window-shaped incisions may be provided to facilitate inspection, or the components of the pump may be made of transparent material. In addition, it is also possible to use a plastic material that discolors when breaking deformation occurs. Marks may be placed on the movable portion and the casing. The material bridge is preferably formed between an operation sleeve for retaining a pump cylinder serving as a medium container and selectively receiving it, and an inner portion of a basic casing portion provided with an operation shoulder portion. The operation shoulder portion serves as a support for two fingers and the thumb presses the operation sleeve. With proper force applied the material bridge can be cut. As a result of the forces exerted at the same time, there is an adequate operating force for reliable pump operation.

The material bridge may for example be provided on the outer circumferential surface of the operating sleeve or between the operating sleeve and the ring surrounding it, which is fixed to the facing portion, ie the casing, by snap-in action. In this way, the operation sleeve can be made separate from the casing. However, the material bridge can be made on the casing and the circular fastening elements can also be fastened to the movable facing, pump cylinder or operating sleeve by engagement or other means.

According to a feature of the invention, the element formed on the pump portion by the material bridge surrounds the protrusion of the housing on the outside. In this case, the element completely covers the connecting gap between the pump portion and the housing, providing visual and functional merging between the pump portion and the housing, as well as preventing any possible tampering with the interfering closure. . Although the snap-in connection is prevented from being pulled out, the connection is released when the user pulls the pump cylinder out of the housing. In this case, the tamper-evident closure that interferes with the material bridge is broken.

The element preferably consists of an annular shape having an L-shaped cross section, consisting of a side facing bottom ring and a jacket adjacent thereto. It is preferable that a snap portion is provided on the inner surface of the jacket. This snap portion can snap into a corresponding snap portion in the annular projection.

The foregoing and other features will be apparent from the claims, the description and the drawings. Each feature in the form of a single or combination may be embodied in a different field than the embodiment of the present invention and may present an independent protected configuration.

Now, the present invention will be described in detail with reference to the drawings.

The present discharge device 11 shown in FIG. 1 has a basic body 12 in two parts. The body includes a base casing portion 13, which has a strap-shaped casing portion with two operating shoulder portions 14 and a jacket 15 connected thereto. The base casing portion is flat or flat oval and in terms of drawing. It has its largest extension, while it has a dimension laterally than said maximum extension. The jacket 15 is elongated on the right and left sides of FIG. 1 and has cutouts 16 at its two sides approximately parallel to the drawing plane, which are open to the bottom.

An operating sleeve 17 is integrally injection molded to the casing portion 13 inside the connector 18 that emerges from the base casing portion 13. The integral connection between the base casing portion 13 and the operating sleeve 17 consists of a material bridge 19, as shown in FIGS. 2 to 4. The gap between the outer edge of the upper flange 21 of the operating sleeve 17 and the inner flange protrusion 22 inside the connector 18 is connected by three thin connecting webs in the illustrated embodiment. These connecting webs are triangular and their ends are formed in the web 22 to be a predetermined breaking point. From a manufacturing point of view, because of the small recesses not exceeding the size of the normal flash, the connecting webs can be formed on the separating surface between the two plastic injection molded parts, which are formed by a jacket ( The inner space 23 of the connector 15 is formed, and the inner space of the connector 18 is also formed. Accordingly, the material bridges 19 are arranged at regular intervals in the circumferential direction on the surface consisting of the inner bottom surface of the operation shoulder portion 14 and the upper edge of the flange 21.

The operating sleeve 17 has an inner rib 24 formed from its bottom 25, the length of which is approximately three quarters of the length of the sleeve. The bottom 26 of the pump cylinder 27 is supported on the inner rib. The pump cylinder, made of glass, has an approximate cylindrical sleeve with a closed bottom and has an upper side flange 28. The pump cylinder also constitutes a container for the medium 29 to be discharged. The inner surface of this pump cylinder becomes a piston guide surface for the piston 31, which is made of a piston plug of elastic material such as rubber or the like. The piston is a thick walled tube that takes the shape of an H in the longitudinal section, a closed web 32 is formed in the center to block the interior of the tube and the outer jacket of the tube forms a piston guide surface. Above and below the piston, there is formed a concave portion 33 near the cone connected to the closing web 32.

The piston plug 31 rests on the sealed medium 29. Charging is done with or without air. The pump cylinder is inserted at the top of the operating sleeve with a slight pressure and over the length of its operation shoulder portion 14 and passes through the connector 18 to be inside the connector portion 34. This connector part may also consist of an adapter. The connector part is finger-shaped, substantially in the form of a cylindrical or somewhat conical shaft, the upper part of which is spherically rounded in the direction of the axis 35 of the pump. In the center of the rounded portion, a discharge hole 36 in the form of a general injection nozzle is provided. However, the vent hole may be shaped, for example, in a form suitable for delivering a fixed amount of liquid or waste yeast media, thereby allowing good media delivery for any type of body opening. Therefore, the connector casing 34 is made separate from the base casing, and the base casing is formed using a snap fastening 37 having three tabs, for example, having a thorn-shaped head to engage with the holes. It is preferable to fix it to and to center the connector portion with the connector 18. In order to prevent the connector portion 34 from being separated, the snap fastener can be configured in a self-locking manner. The protective sleeve 38 serves to protect the connector part from contamination.

Inside the connector part there is a piston rod 39 which is inserted into a sleeve 41 which has a channel 40 inside and which is formed inward at the upper end of the connector part 34. A ram 42 consisting of a hollow steel needle cut out obliquely downward is inserted into the piston rod 39 by press-fitting into a hole provided with a corresponding retaining rib.

The components of all pumps other than the steel needle 42 and the rubber piston plug 31 and the glass pump cylinder / medium container are plastic injection molded parts.

When assembling the components around the base casing portion 13 and the operating sleeve 17, the pump cylinder 27 is inserted from above into a receptacle 43 consisting of the interior of the operating sleeve 17. The cylinder 27 stores a medium 29 which is securely sealed with the piston plug 31.

Next, the connector part to which the piston rod and the ram 42 are already engaged is mounted, and it is engaged and fixed to the base casing part using the snap fastener 37. In this way, when the protective sleeve 38 is fitted, the assembly of the discharge device is completed. To use this device, remove the protective sleeve 38 and then lift the ejection device with three fingers, with the two fingers on the shoulder 14 and the thumb 25 of the operating sleeve 17. ). The thumb is placed in a window-shaped cutout 16, providing space for proper handling. By directing the discharge hole 36 to the corresponding position and then pressing the operating sleeve with force, an operating pressure is generated, the break point of the material bridge 19 is cut and the operating sleeve moves up with the pump cylinder. Also, as a result of the generation of a large pressure in advance, the movement of the operation sleeve is made at a high speed, so that the discharge stroke is made quickly. The pump cylinder moves upward with respect to the ram 42, which is engaged with the central web 32 of the piston plug, but due to the elasticity of the piston plug, immediate resealing occurs on the outer side. Only through the inner channel of the ram, which is configured as a hollow needle, the medium exits up through the discharge channel 40 and the discharge hole 36, where it is discharged in spray form or in a quantity. The lower end face of the piston rod 39 can be engaged with the top face of the piston plug 31 so that a direct pressure connection is made with the piston plug, and the piston plug is lowered down along the piston guide surface 30 so that the medium is discharged. Is delivered to the ball. The length of the needle is such that the needle does not exceed the lower end face of the piston plug 31, thereby ensuring complete release of very expensive media under any circumstances.

Thus, the present ejection device can intentionally and accurately dispense a certain amount of sensitive and expensive media. Interfering blockages that cooperate with material breakage can be used to check integrity at any time and deliver complete media at the appropriate operating pressure.

The present device is simple to manufacture and fit, and can easily adapt to different situations by using different types of adapters. After the operation is made, the unit consisting of the pump cylinder 27 and the operation sleeve can be loosened and selectively pulled out in the downward direction. The pump cylinder 27 can be separated together with the piston plug 31, and the remaining components other than the small needle can be made of one kind of material, such as plastic, and thus can be recycled.

5 is a longitudinal sectional view showing an embodiment in which the casing 13 and the connector portion 34 are integrated. Like reference numerals refer to like elements, and reference may be made to the above-described embodiments regarding these elements and their operations.

A fixed element 60 is arranged outside of the operating sleeve 17 in which the container 27 is contained, which has an annular shape with an L-shaped cross section. The fastening element is connected to the operating sleeve 17 by several material bridges 19, which are configured to be cut under operation pressure to separate the annular fastening element from the operating sleeve. The fastening element 60 and the operating sleeve 17 and the material bridge 19 are made integrally by plastic injection molding.

The fixing element 60 is fixed to the casing 13 by a snap connection 61. This fastening element is centered inside and inside the connector part 34 with its axial legs, and the outwardly facing leg of the fastening element engages the recess between the operating shoulder 14 and the connector part 34. .

In assembly the operating sleeve is introduced together with a container 27 forming a pump cylinder. Pressing the lower engagement surface 63 of the fastening element 60 shown in FIG. 5 using an assembly tool, the latching connection 61 without damaging the interfering closures made of the material bridge 19. It can be combined with. However, when the user moves the operation sleeve up, the material bridge 19 is cut so that the operation sleeve can be performed with the pump cylinder / container 27 in the manner described above in the pump stroke. The operating sleeve 17 is guided in the annular fastening element 60 (between the cut material bridges) and also on the inner web 62 of the connector part 34. The outer flange of the container / pump cylinder 27 is also guided in this way, in which the inclination of the operating sleeve is prevented. The material bridge 19 may consist of connections in the form of divided films or continuous films.

The fastening element 60 has some axial and radial clearance clearance in the latching connection 61, which can intentionally or unintentionally rotate the operating sleeve 17 without damaging the interfering closures. . However, the latching connection must be strong enough so that the interfering closures can be cut when the operating sleeve 17 is pulled down. In this way, the contents of the discharging device are not tampered with at all.

In this way, in order to release the seal of the medium container 27, an interfering closed body that requires stronger bridge cutting force than in the case of a simple needle is provided. This is aided by the frictional force between the guide flange 47 and the retaining clips 44, which clips overcome the static frictional forces and then make a sliding motion, thereby increasing the handling and other resistances. It generates most of the operating force.

6 and 7 show one preferred embodiment having the same configuration and operational features as the embodiment of FIG. 5. Like reference numerals refer to like elements, and reference may be made to the above-described embodiments regarding these elements and their operations.

The element 60, which is connected to the operating sleeve 17 by a material bridge 19, is a ring having an L-shaped cross section. The element thus has a bottom ring 70, in which material bridges 19 are arranged, which couple the bottom ring 70 to the operating sleeve 17 integrally. The jacket 71 is parallel and concentric with the operation sleeve 17. On the inner side of the jacket 71, a snap portion 72 is formed, for example, of a spinous annular projection (see Fig. 7 which is enlarged by a circle of dashed lines).

The element 60 covers the housing protrusion 61, which is annular and surrounds the intermediate housing hole 74. In this housing hole is a pump cylinder 27 and its operating sleeve 17. The protrusion 61 protrudes downward from the housing 13. This protrusion 61 may be annular or tubular, or several pieces may be arranged in a ring shape. The protrusion has a corresponding portion 73 which engages with the snap portion 72 of the jacket on the outside thereof.

When mounting the operation sleeve / pump cylinders 17, 27 to the housing hole 74, the element 60 snaps into the housing protrusion 61 to cover the protrusion. Appropriate force must be applied at snap-on to ensure that the material bridge does not cause excessive stress when snap-on is made. However, when a reverse force is applied, which may cause the operation sleeve 17 to fall down, the material bridge 19 is cut off because the snap means 72 and 73 are in a visible shape, thereby making the interference apparent.

The housing in FIG. 5 has a housing jacket 15 protruding downwards, whereas in the embodiment of FIGS. 6, 7 a flat housing protrusion extending laterally in both directions from the main portion 34 of the housing (FIG. 7). The operation shoulder part 14 of a form is provided. This operation shoulder part is generally elliptical. When the lower bottom 25 of the operation sleeve is pressed with a thumb, the operation shoulder portion makes it possible to safely hold the discharge device with two fingers. As shown in FIG. 7, since ribs 65 and in particular the protruding edge ribs 77 are provided, the grip is easier and safer and the stiffening is also improved.

In this way, the material bridge can be preserved without impairing the stability which is very important for disposable products. In addition, the lower surface of the operation shoulder part 14 can be used, for example, when displaying a batch number or the like. And the operating sleeve 17 can be used when attaching a label or other indication mark.

On the outer circumference of the operating sleeve 17 there is a second annular element 76 located a distance a away from the bottom face 63 of the element 70. Like the element 70, the second element 76 is also made integral with the operating sleeve by the material bridge 19b, which may be of the same kind as shown in FIGS. However, this bridge may be made somewhat stronger than the bridge of element 60.

The discharge device according to this embodiment is a double stroke, that is, a discharge or spray device capable of releasing a medium by exactly a fixed amount at each of two times. The operation is stopped by the annular element 76 when the first partial stroke corresponding to the distance a is made. At the end of this first partial stroke, the action force (for example, the back pressure of the liquid) and the force necessary for cutting the material bridge 19 become large. Thus, the user cannot accidentally over move the second annular element.

After such a stop, which is usually in the middle of the entire stroke, the user can break the material bridge 19b by increasing the pressure on the pump. When this material bridge 19b is broken, the annular element 76 pushes against the contact surface 63 of the element 60.

The vessel or pump cylinder 27 is opened by the hollow needle 36 after the first partial stroke of the stroke of the dual stroke discharge device is made. When using nasal sprays, this embodiment is suitable for continuous or constant dosages of drug into the nostrils. In this way, the second partial stroke can be prevented from being tampered with.

According to the embodiment of Figure 6, it is possible to obtain a hermetic release device that is easy to operate and package and does not have a complicated structure.

Claims (14)

A base body 13 at least partially containing a pump unit, At least one cuttable material bridge 19 disposed between the pump unit and the annular fixing element 60 fitted to the base body 13 while surrounding the outer protrusion 61 of the base body 13. Interfering blockages that can be included and broken when subjected to operational force, and A snap means (72, 73) provided on the outer side of the projection (61) and the inner side of the fixing element (60), respectively, to interact, The pump unit has a pump chamber which can be connected to the discharge hole 36 through the discharge channel 40, which is defined by the pump cylinder 27 and the pump piston 31 and the pump cylinder 27 is a medium. The container piston and the pump piston 31 is displaceably guided in the pump cylinder 27, The fixing element (60) is characterized in that it is coupled to the pump unit by at least one material bridge (19). 2. Discharge device according to claim 1, characterized in that the fastening element (60) is a ring having an L-shaped cross section, comprising a jacket portion (71) substantially cylindrical with a bottom ring portion (70). 3. The discharge according to claim 2, further comprising a snap portion (72) interacting with a corresponding snap portion (73) provided on the outer surface of the protrusion (61) on the inner side of the jacket portion (71). Device. 4. The method according to any one of claims 1 to 3, wherein the direction opposite to the snap-in direction, i.e. the direction in which the holding force is greater than the force required to break the one or more material bridges 19, Ejection device characterized in that the snap means (72, 73) are in the shape of a visible shape so that a smaller holding force can be exerted in the snap-in direction. Discharge device according to one of the preceding claims, characterized in that the guide for the pump part consists of an inner web (62) of the base body (13). Emission device according to any of the preceding claims, characterized in that the fastening element (60) has a mating surface for an assembly tool that applies a force to engage the snap means (72, 73). Discharge device according to one of the preceding claims, characterized in that the at least one material bridge (19) is formed in combination with an operating sleeve (17) at least partially receiving a pump cylinder (27). 8. The device of any one of the preceding claims, further comprising a number of material bridges disposed substantially on one plane. 10. Discharge device according to any one of the preceding claims, characterized in that the at least one material bridge (19) is in the form of a tip connected to a wall. 10. Discharge device according to any one of the preceding claims, characterized in that a marking is provided on the pump unit which interacts with the marking on the base body (13), which markings are displaced from one another during pump operation. . 11. The method according to any one of claims 1 to 10, wherein an interfering block position where the parts capable of relative movement for manipulation are fixed by the interfering block and a release start position determined by the release start of the medium Emission device characterized in that there is a space to define the idle path. A base body 13 at least partially containing a pump unit, A first and a second interfering block, which includes first and second elements 60 and 76 and which can break when subjected to operating force; The pump unit has a pump chamber which can be connected to the discharge hole 36 through the discharge channel 40, which is defined by the pump cylinder 27 and the pump piston 31, and the pump cylinder 27 Form a medium container, the pump piston 31 is displaceably guided in the pump cylinder 27, Each said element has one or more cutable material bridges 19, 19b between the pump unit and the base body 13, which element is the pump piston after the material bridge 19 of the first element 60 has been cut. The first and second elements are positioned apart from each other to allow the first partial stroke of 31, the first partial stroke being limited by the second element 76, and the operating force is increased so that the second element 76 is increased. And the pump piston (31) is free to make a second partial stroke after the material bridge (19b) of the material is cut. 13. Discharge device according to claim 12, characterized in that the first element (60) has a contact surface against which the second element (76) is hit at the end of the first partial stroke. A base body 13 at least partially containing a pump unit, It contains interfering blockages that can break when subjected to operating force, The pump unit has a pump chamber which can be connected to the discharge hole 36 through the discharge channel 40, which is defined by the pump cylinder 27 and the pump piston 31 and constitutes a medium container. The pump cylinder 27 is partially received in the plastic operating sleeve 17, the pump piston 31 is displaceably guided in the pump cylinder 27, The base body 13 has a substantially cylindrical portion 34 in the center, the upper end of which has a spray nozzle 36 and the lower end of which has a shoulder 14 for handling and gripping. It protrudes flat in both directions and the length in both directions is larger than the direction perpendicular to it. The interfering closure includes one or more breakable material bridges 19 that are coupled to the securing element 60 and the operating sleeve 17, wherein the securing element 60 includes the shoulder portion 14 for holding. And an outer housing protrusion (61) protruding downwardly from the bottom surface of the bottom and a ring surrounding the operation sleeve (17) extending through the fixing element (60) along a central axis.