Pharmaceutical preparation administrator

Abstract: A preparation administrator comprises an adminis­ trator body (1) including a solid preparation (3) and having at its one end an inflow channel for the solvent and at the other end an outflow channel for the liquid preparation, a solvent con­ tainer (2) containing a solvent to dissolve, disperse or suspend the preparation and being connected to the inflow channel of the administrator body, and a means for ejecting the solvent together with the solid preparation in the body through the outflow channel of the body. A solid preparation (3) in the administrator body is dissolved, or suspended or dispersed in the solvent fed from the solvent container and ejected as a liquid preparation through the outflow channel of the body.

Description: The present invention relates to a pharmaceutical preparation administrator and, more particularly, to a device for administrating one or more solid preparations such as freeze-dried solid preparations along with a solvent as a liquid preparation to nasal or eye mucous membranes. A preparation administrator as specified in the preamble of Claims 1 and 3 is disclosed in US-A-3 354 883. Recently, peptide materials such as peptide hormones and peptide - or polypeptide - bioactive materials, have attracted the attention of many researchers and induced a great interest in development of medical supplies utilizing such peptide materials as they show great drug efficacy in very small quantities. In order to ensure that the peptide materials have high drug efficacy and safety, a certain quantity of the drug has to be absorbed into the body at the administration site. However, most peptide materials, when orally administered, scarcely show any drug efficacy since they are scarcely absorbed in the gastrointestinal tract and have very low bioavailability because of their digestion in the GI tract or of the first pass effect taking place in the liver. In addition, the absorption rate of the peptide materials varies greatly with individuals or with dosing intervals, thus making it considerably difficult to ensure the drug efficacy and safety. For that reason, it would be necessary to administer peptide preparations by injection to obtain high drug efficacy. The injection ensures the delivery of the drug into the body, but it causes pain to a patient and is inconvenient to operate. Thus, in order to administer preparations frequently and safely, there is an increasing demand for the development of an administration method which ensures high absorption rate of the drug and which may replace an injection. On the other hand, mucosal applications, for example, intranasal administration, inhalation and eye drop administration, have attracted much interest recently as the drugs are absorbed easily through nasal mucous membranes or eye mucous membranes. Further, the mucous application makes it possible to prevent the drug from inactivation at the GI tract in the digestive canal as well as to avoid the first pass effect in the liver. For the purpose of systematic treatment besides rhinitis and allergic coryza, a certain drug is administered in a liquid preparation intranasally with suitable administering devices such as, for example, spray, tubes, syringe-type devices. Taking note of advantages in the mucosal applications, it may be a good idea to administer the aforesaid peptide materials in the form of a solution or a suspension to the mucousal membranes by means of a suitable administering device. However, peptide hormones and peptide - or polypeptide - bioactive materials are considerably unstable in a liquid state, thus making it very difficult to store them as liquid dosage forms such as solutions, suspensions and dispersions. Thus, the peptide materials must be stored in a dry state to keep their drug efficacy even if it in required to administer such a peptide material in a liquid preparation. If the peptide material is formed into a solid preparation such as a freeze-dried form, the solid preparation must be dissolved, or dispersed, or suspended in a solvent such as distilled water just before use to form a solution, or a suspension, or a dispersion. In addition, the resultant liquid preparation must be charged into a suitable administrating device such as syringes, spray containers, tubes, pipettes and the like to administer it by dropping or spraying. Thus, this method is disadvantageous in that operation is very troublesome and inconvenient. For injection, it has been proposed to use a syringe comprising a cylinder including powder and a solvent separated by a rubber plug arranged in the cylinder. In use, the solvent is forced to flow into a front powder chamber of the cylinder where the powder contained therein is dissolved in the solvent, and the resultant solution is injected into the human body. Such a pre-filled syringe makes it possible to dissolve the tablet in the solvent by itself, so that there is no need to charge the solution into the syringe. It is, however, impossible to apply such a syringe to administration of peptide preparations as a non-parenteral application because of its structure. Further, it is difficult with the conventional administrating devices such as spraying devices to administer a very small quantity of the liquid preparation correctly, as well as to administer all the liquid preparation contained therein because of its structure. For that reason, a part of the unused preparation is thrown into the discard together with the administrating device. If such a device is applied to administration of the peptide materials, it is very wasteful as the peptide materials are very expensive. In addition, since the administrating devices of the prior art are designed on condition that they are used repeatedly, there is the possibility of bacteriological contamination of the device during repeated use. In order to avoid the bacteriological contamination, it is required to rinse the administrating device at regular intervals, thus making it very troublesome to handle. In addition, it is difficult with the rinsing operation to sufficiently prevent the administrating device from bacterial contamination. It is therefore necessary to add a preservative or antiseptic to the preparation. However, chemicals generally used as the preservative or antiseptic have a strong irritating action for mucus membrane, so that there is the possibility of disturbance of mucous membranes. In US-A-3 354 883, a disposable syringe having frangible means for mixing plural medicaments is disclosed. The syringe comprises a collapsible bulb and a tubular nozzle detachably connected to the bulb for conveying fluids from the bulb into the body. The nozzle has one end which encircles a neck portion of the bulb, and a medicament chamber is provided in this one end and is covered by a frangible cap. The cap carries a flange which projects into the path of movement of the neck portion of the bulb as the nozzle is moved toward the bulb in an axial direction. Cooperation between the flange and the outer or free end of the neck portion of the bulb during such movement effectively ruptures the frangible cap to release medicament from the chamber into the bulb. It is therefore a main object of the present invention to provide a preparation administrator which makes it possible to accurately and easily administer a dose of a solid preparation along with a solvent in a liquid preparation to nasal or eye mucous membranes, without causing the loss of expensive preparations. Another object of the present invention is to provide a preparation administrator which makes it easy to administer a solid preparation as a liquid preparation to nasal or eye mucous membranes by spraying or by dropping. Still another object of the present invention is to provide a preparation administrator which is fitted for mass production, and which is easy to handle, to operate, and to keep in aseptic condition during storage or transportation. These and other objects are solved by providing a preparation administrator as defined in the independent Claims 1 or 3. The administrator body may take any configurations such as, for example, a tubular form, a cylindrical form, a conical form and the like. The body may also have a configuration with different sizes or cross sectional areas for two or more sections. The size of the body may be determined arbitrarily according to the application. For applications to nasal cavities or dropping on the eyes, the administration body is generally made into a tubular member with an outside diameter of 2 to 10 mm, an inside diameter of 1.5 to 9.5 mm, and a length of 10 to 150 mm, preferably, a tubular member with an outside diameter of 2 to 6 mm, an inside diameter of 1.5 to 5.5 mm and a length of 30 to 70 mm. As a material for the administrator body, there may be used any material provided that it does not inactivate or denature the pharmaceutical preparation and solvent, and does not cause an interaction between the content and the body. Typical materials for administrator body includes, without being limited to, polyethylene, polypropylene, polystyrene, silicone, fluorocarbon polymers, glass. Although these materials may be used alone or in combination, it is preferred to use a transparent or semi-transparent elastic material. The administrator body may be sealed at either ends with a thin film to prevent the solid preparation contained therein from moisture absorption and from bacteriological contamination. It is preferred to pack the administrator body in an aseptic package to keep it in an aseptic condition until the solid preparation is to be used. If the solid preparation is of an easily oxidizable material, it is preferred to replace the air in the package with nitrogen to improve the drug stability during storage. The spraying means may be a spray nozzle adapter removably put on its top or free end. In this case, it is preferred to use an administrator body composed of a hollow member with one end closed in the form of a cylinder, or a conical hollow member, or the like. In this case, the administrator body is provided with at least one outflow channel so designed that it prevents a non-pressurized liquid from passing therethrough, but allows a pressurized liquid to pass therethrough. The outflow channel of the administrator body may be formed in a closed end wall or a barrel of the hollow member close to the closed end thereof. The outflow channel may be formed into any desired shapes such as, for example, in the form of very small circular holes, slit-like incisions, crossed incisions and the like. It is preferred to provide one or more sharp-cut incisions with a length ranging from 1 to 50 mm, preferably, from 1 to 10 mm in the barrel of the hollow member so that they extend in parallel with the axis of the hollow member, although the size of the incisions may vary with the dosage and/or applications. The nozzle adapter is provided with a bore corresponding to the configuration of the administrator body so that a clearance is formed between the inside wall of the adapter and the administrator body inserted therein to provide a flow channel for the liquid preparation. The flow channel extends from the outflow channel of the administrator body to the spray nozzle provided at the tip of the nozzle adapter. The adapter may be provided at its barrel with a flange or two or more projections extending radially in diametrically opposed directions from each other to permit In operator to hook two fingers around the flanges to allow for easy handling of the administrator. In any cases, the size and shape of spray nozzle may be determined optionally so as to adjust a spraying angle and size and size distribution of particles sprayed. As a solvent container, there may be used any container , provided that it may contain a certain quantity of solvent required for one or more doses of the solid preparation at the least. As a material for the solvent container, there may be used any material provided that it does not inactivate or denature the solvent and does not cause an interaction between the solvent and container. Typical materials for container include, without being limited to, polyethylene, polypropylene, polystyrene, silicone, fluorocarbon polymers, glasses and the like. These materials may be used alone or in combination. The container is formed as a separate member. In this case, the container may be attached to the body, for example, by press-fitting, or by screw mounting or any other connecting means which cause no leakage of the solvent. The solvent container may comprise a cylinder and plunger slidably arranged therein. In this case, the solvent contained in the cylinder is ejected by inserting the plunger into the cylinder. Thus, the container serves as a solvent ejecting means. The solid preparation may be used in any conventionally known forms such as powder, granules and the like. It is, however, preferred to use easily soluble or dispersible solid preparations which may be dissolved, or dispersed or suspended in the solvent by contacting with the solvent only, without stirring or heating. The easily soluble or dispersible solid preparations may be formed into powder, granules, membrane, sponge-like form or porous forms. It is preferred to use freeze-dried powder or freeze-dried shaped preparations from the points of view of ensuring the dispersibility or solubility. Because, the preparations produced by a suitable means other than lyophilization are apt to be ejected from the administrator in the solid state as the air, which remains around preparation particles, prevents them from contacting with the solvent. If necessary, the solid preparation may be provided with a through hole to remove the air in the air layer formed between the solid preparation and the solvent when latter is ejected into the bore of the body. As a material for solid preparations, there may be used any drugs which are unstable or stable in a liquid form. The typical drug includes, without being limited to, peptides, polypeptides and proteins such as hormones, physiologically active materials. Also, the preparation administrator of the present invention may be used for administration of preparations containing one or more drug components which are stable even in a liquid form. The solid preparation may include one or more additives such as excipients, stabilizers, absorption enhancers, solubilizing agents, suspending agents and the like as occasion demands. Such additives may be selected in accordance with the drug and solvent to be used. For example, if the drug component is a peptide material, for example, a growth hormone releasing factor, it is preferred to use albumin as the stabilizer, as well as to use citric acid or glycine as the solubilizing agent. In that case, the preferred suspending agents are methyl cellulose, polysorbate 80 and the like, while the preferred absorption promoters are saponin, sodium glycocholate, and the like. The solid preparation may be charged into the administrator body in any way , for example, by a method comprising the steps of preparing a drug solution, charging the solution containing a dose of drug into a bore of the administrator body, and then lyophylizing the same. Also, the administrators may be produced by charging a dose of powder or granular preparation into the tubular member with one end closed. The powder or granular preparation may be prepared from a drug solution by freeze-drying, spray-drying or any other drying process. The solvent is selected in accordance with the drug used for solid preparations. Typical solvents used are distilled water, isotonic sodium chloride solution, buffer solutions such as, for example, phosphate buffer solution, citric acid buffer solution, glycine buffer solution. In use, the administrator body is connected with the solvent container to constitute a preparation administrator, and then the tip end of the administrator body is inserted into a nasal cavity of a patient for example. By operating the solvent ejecting means, the solvent in the container is ejected into the administrator body through the inflow channel of the body so that the solid preparation in the body is immediately dissolved, or suspended, or dispersed in the solvent to form a liquid preparation and then applied to the nasal cavity in the form of droplet or mist through the outflow channel of the body directly or further through the spray nozzle. The preparation administrator makes it possible to administer the preparation in a drop preparation to eye mucous membranes. According to the present invention, the solid preparation is stored in the administrator body separate from the solvent contained in the solvent container, thus making it possible to store the preparation for a long period of time even if the preparation is of a peptide material, which is poor in conservation stability in a liquid state, such as peptide hormones, physiologically active materials and the like. Also, all the solid preparation included in the body is administered in a liquid preparation to the nasal cavities or eyes by ejecting part or all of the solvent in the solvent container, thus making it easy to operate. Further, a dose of solid preparation included in the administrator body is dissolved, or dispersed, or suspended in the solvent to form a liquid preparation, and then administered in a liquid form to mucous membranes completely, thus making it possible to ensure administration of the correct dosage of drug as well as to make good use of the solid preparation. Since the administrator body is filled with a dose of preparation, the preparation administrator of the present invention may be used as a disposable. Thus, there is no possibility of bacteriological contamination or the administrator. Also, there is no need to incorporate preservatives or antiseptics, which have a strong irritating action for mucous membranes, into the preparation. If the administrator body is composed of a hollow member with one end closed and has the outflow channel in the form of one or more very small holes or one or more incisions formed in the closed end wall or side wall of the hollow member so that they prevent a non-pressurized liquid from passing therethrough but allow a pressurized liquid to pass through, it is possible to mass-produce administrator bodies including a solid preparation as there is no possibility of leakage of a liquid through the outflow channel of the body. The above and other objects, features and advantages of the present invention will be further apparent from the following description taken in conjunction with the accompanying drawings which show, by way of example only, several preferred embodiments of the present invention. BRIEF EXPLANATION OF THE DRAWINGS Fig. 1 is a section view of a preparation administrator showing an embodiment of the present invention; Fig. 2 is a plane view of the preparation administrator of Fig. 1; Figs. 3a and 3b are section views showing modified forms of a preparation administrator according to the present invention; Fig. 4 is a section view of a preparation administrator showing another embodiment of the present invention; and Figs. 5a and 5b are section views of the preparation administrator of Fig. 4 in operation. PREFERRED EMBODIMENTS OF THE INVENTION Referring to Fig. 1, there is shown a preparation administrator set comprising a cylindrical administrator body 1, a cylindrical solvent container 2 and a spray nozzle adapter 23 into which the administrator body 1 is inserted. A hood 24 is put on the top of the nozzle adapter to protect the same. The administrator body 1 is a top-closed cylindrical member with different sizes for the front, middle and rear. A front portion or barrel 1a with a tip end closed is provided at its side wall with two slit-like clean-cut incisions 22 each of which extends in parallel with the center axis of the body and serves as on outflow channel for the liquid preparation. The body 1 is so designed that the outside diameter of the front barrel 1a in smaller than that of the middle barrel 1b, while the outside diameter of the rear barrel 1c is greater than that of the middle barrel 1b but equal to or smaller than the inside diameter of the container 2. The administrator body 1 is charged with a dose of a solid preparation 3 and provided with an easily soluble membrane 26 at a stepped portion 1d between the middle and rear barrels 1b and 1c. The solvent container 2 is a bottom-closed cylindrical member and is provided with a cylindrical chamber 2A so that the rear barrel 1c of the administrator body 1 may fit in the chamber 2A and slide longitudinally to eject a solvent 4 contained in the chamber 2A. Before assembly of the administrator set, a cap (not shown) is screwed on a threaded tubular extension of the container 2 filled with a certain amount of the solvent. The spray nozzle adapter 23 is a cylindrical member with a bore having an inside diameter equal to the outside diameter of the middle barrel 1b. The nozzle adapter 23 is provided at its tip with a spray nozzle tip 25. At the side wall close to the rear end there is provided an elliptical flange 27 to allow the operator to hook fingers around the flange 27 to allow for easy operation of the administrator. Between the inner wall of the nozzle adapter 23 and the front barrel 1a of the body, there is formed a circular gap 28 serving as a passage extending from the outflow channel 22 of the administrator body 1 to the spray nozzle 25. The administrator body 1 with a dose of solid preparation may be produced, for example, by a method comprising the steps of molding a suitable plastic material into tubular members with one end closed, forming one or more incisions in a barrel of tubular member, holding the tubular members in the vertical position, charging a dose of a preparation into a bore of each tubular member, and then closing the open end of each tubular member with an easily soluble membrane 26 such as a gelatine film or a medicinal wafer, which prevents the preparation from scattering or falling out during production or transportation. In that case, the preparation may be used in any desired forms such as powder, granules or a liquid. If the preparation is used in the form of a liquid, the liquid preparation charged is freeze-dried before closing the open end of the tubular member with the membrane 26. In this case, there is no leakage of the liquid preparation in the administrator body 1 during its production as the cut surfaces of the incision 26 are brought in close contact because of the elasticity and physical structure of the body. Thus, the preparation administrator in this embodiment can be mass-produced in simple operation and improved in shelf stability. The easily soluble membrane 26 may be replaced with a lid or any desired porous materials such as, for example, sponges, reticulated films, disks with slits and the like. Also, the porous material may be inserted in the bore of the administrator body 1 before closing the open end with the easily soluble membrane. In use, after removing the hood 24 from the administrator set, the nozzle adapter 23 is held, for example, with the middle and index fingers so as to hook these fingers around the flange 27 and then the container 2 is pushed slowly by the thumb to allow the container 2 to slide along the rear barrel 1c of the administrator body 1. With increase in the stroke of the container 2, the solvent 4 contained therein is applied the pressure and flows into the administrator body 1 where the solid preparation 3 is dissolved, or dispersed or suspended in the solvent to form a liquid preparation. The resultant liquid preparation in the body 1 is forced into the passage between the body 1 and nozzle adapter 23 by forcing the incisions 22 open, and then sprayed through the nozzle tip 25 of the adapter. Thus, the preparation administrator is easy to operate. In the embodiment of Fig. 1, the administrator body 1 is formed in the form of a tubular member with different sizes for three sections, but it may take any configurations as shown in Figs. 3a and 3b. Referring first to Fig. 3a, an administrator body 1 is composed of a tubular member with one end closed, and its outside diameter is uniform over all the length. At the front part of the tubular member, there are two sharp-cut incisions 22 extending in the direction parallel to the axis of the body 1 and serving as the outflow channel for liquid preparation. The incisions may be formed radially along the side wall of the administrator body 1. Also, the incisions may be formed in the closed end wall of the administrator body. In all cases, the incision may be formed in a crossed shape or any desired shapes. Fig. 3B shows another form of an administrator body comprising a tubular member with a configuration similar to that of Fig. 3a except for that it has a large-sized rear portion. The large-sized rear portion is so designed that it may fit in the bore of the solid container and slides along the inner wall of the bore. In the embodiment of Fig. 1, the preparation administrator set includes the spray nozzle adapter 23. However, there is no need to use nozzle adapter 23 as part of the administration set. In such a case, the administrator set is composed of an administrator body including a dose or solid preparation charged therein, and a solvent container filled with a certain quantity of a solvent for a dose of preparation. The administrator body and the container may have configurations similar to those of Fig. 1. Thus, the solid preparation and the solvent form a liquid preparation in the administrator body, and the liquid preparation is ejected directly through the incisions of the administrator body. In this case, it is preferred to provide a flange similar to that of the nozzle adapter 23 or projections extending radially in diametrically opposed directions from each other to permit the operator to hook fingers around the flange or projections to allow for easy handling of the administrator set. Fig. 4 shows another embodiment of a preparation administrator set having a structure similar to that of the embodiment of Fig. 1 except for the following points. The administrator set includes a rod-like connector 30 in addition to an administrator body 1 and a solvent container 2. The administrator body 1 is composed of a tubular member with different sizes for the front and rear. The front half 1a of the body 1 is closed at tip end and provided at its side wall close to the tip end with two slit-like incisions 22 to form outflow channels for the liquid preparation. The rear half 1b of the body 1 is provided at its rear end with an outwardly extending flange 1d, and at a middle portion of its bore with a projection 1e serving as a stopper for the connector 30. The solvent container 2 is composed of a cylindrical member with one end closed and has a cylindrical solvent chamber which is filled with a certain quantity of a solvent. An inlet portion of the solvent chamber is formed in the shape of an unfolded fan to facilitate insertion of the connector 30. The rod-like connector 30 has a bore passing therethrough and in provided at its one end with a cylindrical head 32 having an outside diameter substantially equal to the inside diameter of the container 2, and at the other end with a disk-like piston head 33 having an outside diameter substantially equal to the inside diameter of the administrator body 1. Thus, the cylindrical head 32 can slide within the chamber of the container 2, while the disk-like piston head 33 can slide within the bore of the administrator body 1. The disk-like piston head 33 is provided at its center with a hole to allow the solvent in the connector 30 to flow into the administrator body 1. In use, after making the preparation administrator set ready for use, as shown in Fig. 4, the container 2 is forced upwardly in the figure. At that time, the piston head 33 is in contact with the projection 1e in the bore of the administrator body 1 and is stopped, so that the container 2 is moved along the cylindrical head 32 of the connector 30. For that reason, the solvent 4 flows into the connector 30 and then into the administrator body 1 where the solid preparation is dissolved in the solvent to form a liquid preparation, as shown in Fig. 5a. Further forcing the container 2 upwardly, the piston head 33 passes through the projection 1e and ejects the solvent from the body 1 through the incisions 22, no that the liquid preparation is sprayed by the spray nozzle 25 as shown in Fig. 5b. According to the present invention, the preparation can be stored aseptically in a dry state, thus making it possible to store the preparation for a long period of time even if the preparation is the one containing a peptide material which is unstable in a liquid state, such as peptide hormones, physiologically active materials and the like. In addition, it is easy to make the administrator set ready for use. It is also possible to administer a dose of solid preparation to nasal mucous membranes or eye mucous membranes in the form of a liquid preparation with ease as the solid preparation is dissolved, or dispersed or suspended in the solvent in the course of the administrating operation. Example 1 There were prepared administrator bodies as shown in Fig. 1 by molding polyethylene with a metal mold into tubular members with one end closed, and then making two sharp-cut incisions in a side wall of each tubular member with a sharp knife. Separate from the above, there was prepared an aqueous solution containing 0.5 g of glycine in a mixed solution of 1 mℓ of 25% human serum albumin and 49 mℓ of purified water. The resultant aqueous solution was adjusted to about pH 5 with hydrochloric acid. Powder of 5 mg of growth hormone releasing factor (GRF) was dissolved in 1 mℓ of the resultant aqueous solution, and filtered through a membrane filter to prepare a liquid preparation for test samples. The resultant liquid preparation (100 µℓ) was charged into the above administrator body with a micropipette, and then freeze-dried in the conventional manner to prepare a solid preparation charged in the administrator body. The thus prepared administrator body 1 was loaded as a preparation cartridge into a previously prepared spray nozzle adapter 23 shown in Fig. 1, and then inserted in the top and allowed to sink several millimeters into a previously prepared solvent container 2 containing 300 µℓ of purified water to make the administrator ready for use. When the container 2 was pushed against the adapter 23, the purified water 4 in the container 2 was fed to the administrator body 1, and then ejected in the mist through the spray nozzle of the adapter 23 The solid preparation was not observed in the administrator body. Accordingly, it will be understood that the freeze-dried GRF solid preparation dissolves in the solvent instantly and is administered as a liquid preparation by spraying. Example 2 There was prepared an aqueous solution containing 1 g of glycine and 2.5 g of mannitol in a mixed solution of 2 mℓ of 25% human serum albumin and 98 mℓ of purified water, which was then adjusted to about pH 5 with hydrochloric acid. Powder of 10 mg of GRF was dissolved in 1 mℓ of the resultant aqueous solution, and then filtered through a membrane filter to prepare a liquid preparation for the sample. The resultant liquid preparation (100 µℓ) was charged into the administrator body prepared in Example 1, and then freeze-dried to prepare an administrator body including a dose of solid preparation, as shown in Fig. 1. The thus prepared administrator body 1 was loaded into the spray nozzle adapter 23, and then inserted in the top and allowed to sink several millimeters into a solvent container 2 containing 300 µℓ of purified water to make the administrator ready for use. By pushing the container 2 against the adapter 23, spray administration was easily achieved in the same manner as Example 1. It was observed that there was no solid preparation left in the administrator body.

Claims: A preparation administrator comprising: an administrator body (1) containing a dose of a solid preparation (3) and composed of a hollow member closed at one end but open at the other end and provided with at least one outflow channel (22) on the side of the closed end, and a solvent container (2) containing a solvent (4) for said solid preparation; characterized in that said preparation administrator further comprises means for spraying a liquid preparation; said outflow channel (22) prevents a non-pressurized liquid from passing therethrough but allows a pressurized liquid to pass therethrough, and that said administrator body (1) is slidably arranged in said solvent container (2) to constitute a means for ejecting said solvent into said administrator body (1) through the open end thereof to thereby form a liquid preparation just before use and then to spray the resultant liquid preparation through said spraying means. The preparation administrator according to claim 1 wherein said solvent container (2) has a cylindrical chamber containing said solvent into which said administrator body (1) is slidably inserted to constitute said solvent ejecting means. A preparation administrator comprising: an administrator body (1) containing a dose of a solid preparation (3) and composed of a hollow member closed at one end but open at the other end and provided with at least one outflow channel (22) on the side of the closed end, and a solvent container (2) containing a solvent for said solid preparation; characterized in that said preparation administrator comprises means for spraying a liquid preparation, said administrator body (1) further comprises a straight, slender, cylindrically shaped connector (30), said outflow channel (22) prevents a non-pressurized liquid from passing therethrough but allows a pressurized liquid to pass therethrough, and in that said connector is slidably arranged at one end in said solvent container (2) with a cylindrical chamber and at the other end in said administrator body (1) to constitute means for ejecting said solvent into said administrator body (1) therethrough to thereby form a liquid preparation just before use and then to spray the resultant liquid preparation through said spraying means. The preparation administrator according to any of claims 1 to 3 wherein said outflow channel is constituted by at least one incision (22) formed in the side wall of said administrator body (1). The preparation administrator according to any of claims 1 to 3 wherein said outflow channel is a slit-like incision cut (22) in the side wall of said hollow member. The preparation administrator according to any of claims 1 to 3 wherein said outflow channel is a very small hole formed in the closed end wall of said administrator body (1). The preparation administrator according to any one of claims 1 to 6, wherein said spraying means comprises a nozzle adapter (23) having at one end a spray nozzle (25) and being put on said hollow member which preferably has a tubular shape. The preparation administrator according to claim 7 wherein said nozzle adapter (23) is provided at one other end thereof with a flange (27) having a cylindrical or elliptical form. The preparation administrator according to any one of claims 1 to 8 wherein said solid preparation (3) is easily soluble in said solvent (4). The preparation administrator according to claim 1, wherein said spraying means comprises a spray nozzle adapter (23) provided at one end with a spray nozzle tip (25) and at the other end with a bore for attachment of said administrator body (1), and wherein said administrator body (1) is fitted in the bore of said nozzle adapter (23) to form a passage through which the outflow channel (22) of said administrator body (1) is communicated with said nozzle tip. The preparation administrator according to claim 10, wherein said administrator body (1) has different sizes for three sections, the front section (1a) having an outside diameter smaller than that of the middle section (1b), and the rear section (1c) having an outside diameter greater than that of the middle section (1b) but substantially equal to an inside diameter of the solvent container (2), said front section (1a) being closed at a tip thereof and being provided with said outflow channel (22). The preparation administrator according to claim 11, wherein the middle section (1b) of said administrator body (1) has an outside diameter substantially equal to the inside diameter of the bore of said nozzle adapter (23), and wherein said passage is formed between the inside wall of the nozzle adapter (23) and the outside wall of the front section (1a) of said administrator body (1) inserted therein. The preparation administrator according to claim 10, wherein said administrator body (1) has an outside diameter uniform over an entire length thereof and substantially equal to an inside diameter of the solvent container (2), said administrator body (1) being closed at one end and being provided at a side wall close to said closed end with at least one incision to form said outflow channel. The preparation administrator according to claim 10, wherein said hollow member has a small-sized front portion closed at one end, and a large-sized rear portion adapted to be fitted in said solvent container (2), said front portion being provided at a side wall near the closed end with at least one incision (22) to form said outflow channel. The preparation administrator according to any one of claims 1 to 14, wherein said solid preparation is a freeze-dried peptide material. The preparation administrator according to any one of claims 1 to 15, wherein said administrator body (1) is sealed by an easily soluble membrane (26) at the open end thereof.

Inventors: AISAKA AYUMI, FUJIOKA KEIJI, TAKADA YOSHIHIRO, AISAKA, AYUMI, FUJIOKA, KEIJI, TAKADA, YOSHIHIRO
Applicants: SUMITOMO PHARMA, SUMITOMO PHARMACEUTICALS COMPANY, LIMITED
Application year: 1990
Main classification: A61M35
IPC codes: B05B11, A61M35, A61M11, A61M3