JP5786852B2 - Nasal administration container - Google Patents

Description

  The present invention relates to a nasal cavity container for administering a drug solution into the nasal cavity.

  Generally, a nasal administration container administers a drug solution to the left and right nasal cavities. The nasal cavity administration container is inserted into one nasal cavity, and a predetermined amount of drug solution is administered to one nasal cavity. Next, the nasal cavity administration container is inserted into the other nasal cavity, and the remaining drug solution is administered to the other nasal cavity.

  As in the case of the nasal administration container described above, when the drug solution is administered in two portions, it is desirable to simply and appropriately administer a predetermined amount (for example, half each) of the drug solution to each nasal cavity. Japanese Unexamined Patent Application Publication No. 2004-49726 (Patent Document 1) discloses a syringe that administers a drug solution in two portions using a plunger and a plunger rod.

  Assume that the technique disclosed in Patent Document 1 is applied to a nasal container. The plunger rod is provided with a locking portion, and the plunger is provided with a locking receiving portion. Insert the plunger rod into the plunger. Prior to advancement of the locking portion of the plunger rod, the locking receiving portion of the plunger is arranged.

  The first dose is performed by pushing the plunger rod into the plunger. When the locking portion and the locking receiving portion come into contact, the first administration is completed. The plunger rod is rotated to release the contact state between the locking portion and the locking receiving portion. A second dose can be carried out by further pushing the plunger rod into the plunger.

JP 2004-49726 A

  When the technique disclosed in Japanese Patent Application Laid-Open No. 2004-49726 (Patent Document 1) is applied to a nasal cavity administration container to administer a drug solution to each nasal cavity, it is necessary to rotate the plunger rod as described above. In order to rotate the plunger rod, the plunger is grasped with one hand and the plunger rod is rotated with the other hand. It is not easy to rotate the plunger rod with only one hand, and it is necessary to use both hands.

  An object of the present invention is to provide a nasal cavity administration container that can be easily administered with one hand when a drug solution is administered to each nasal cavity.

  A nasal cavity administration container according to the present invention includes a barrel, a plunger, a gasket, a plunger rod, and an elastic member. The barrel includes a first main body, a spray nozzle, a first opening, and a protrusion. The first main body is formed in a cylindrical shape. The first main body is filled with a predetermined chemical solution. The spray nozzle is provided at one end of the first main body. The first opening is provided at the other end of the first main body. The protruding portion is provided on the inner peripheral surface of the first main body portion so as to protrude inward in the cylinder radial direction.

  The plunger has a second main body portion, a second opening portion, a first elongated hole portion, and a second elongated hole portion. The second main body is formed in a cylindrical shape. The second opening is provided at the other end of the second main body. The first elongated hole portion is provided in the second main body portion and extends in a direction parallel to the cylinder axis direction. The second long hole portion is provided closer to the second opening than the first long hole portion, and extends in a direction parallel to the cylinder axis direction. The plunger is inserted into the barrel from one end side and is slid in the cylinder axis direction with respect to the inner peripheral surface of the barrel.

  The gasket is attached to one end side of the second main body. The gasket is inserted into the barrel together with the plunger, thereby enclosing the chemical solution in the interior together with the inner peripheral surface of the barrel.

  The plunger rod has a third main body portion, a pressing portion, a first locking portion, and a second locking portion. The pressing portion is provided at the other end of the third main body portion. The first locking portion is provided on the third main body portion. The first locking portion protrudes toward the outside in the cylinder radial direction, and can be elastically displaced toward the inside in the cylinder radial direction. The second locking portion is provided on the third body portion closer to the pressing portion than the first locking portion. The second locking portion protrudes toward the outer side in the cylindrical radial direction and can be displaced following the first locking portion toward the inner side in the cylindrical radial direction. The plunger rod is inserted into the second main body portion from one end side and is slid in the cylindrical axis direction with respect to the inner peripheral surface of the second main body portion.

  The elastic member urges the plunger rod inserted into the plunger in a direction to be extracted from the plunger.

  In the first administration start state, the second locking portion is locked to the first long hole portion. The elastic member is compressed. The first locking portion protrudes further outward in the cylindrical radial direction from the outer peripheral surface of the second main body portion through the first elongated hole portion.

  As the pressing portion is pressed in the first administration start state, the first locking portion advances toward the protruding portion. The first locking portion is in contact with the protruding portion. The first locking portion is elastically displaced toward the inner side in the cylinder radial direction. The locked state of the second locking portion to the first elongated hole portion is released. The nasal cavity administration container moves to the first administration completion state.

  As the pressing against the pressing portion is released in the pressing release state after the first administration completion state, the pressing portion and the second locking portion are retracted by the restoring force of the elastic member. The second locking portion is locked to the second long hole portion. The nasal cavity administration container moves to the second administration start state.

  As the pressing portion is pressed in the second administration start state, the plunger is pressed against the plunger rod by the locking of the second locking portion to the second long hole portion.

  In the nasal cavity administration container according to another aspect of the present invention, the second main body portion further includes a first protrusion. The first protrusion is disposed so as to be positioned closer to the one end of the second main body than a position where the first locking portion protrudes through the first elongated hole in the first administration start state. Is done. The first protrusion protrudes from the outer peripheral surface of the second main body portion toward the outside in the cylindrical radial direction and can be elastically displaced toward the inner side in the cylindrical radial direction.

  In the preparatory state before the first administration start state, the first protrusion advances toward the protrusion as the pressing portion is pressed. The volume of the drug solution to be administered is set when the first protrusion comes into contact with the protrusion. The nasal cavity administration container shifts to the first administration start state.

  In the nasal cavity administration container according to still another embodiment of the present invention, the second main body portion further has a second protrusion. The second projecting portion protrudes from the outer peripheral surface toward the outer side in the cylindrical radial direction and can be elastically displaced toward the inner side in the cylindrical radial direction. As the pressing portion is pressed in the first administration start state, the second protrusion advances toward the protrusion. When the second projecting portion comes into contact with the projecting portion, the first locking portion is elastically displaced toward the inner side in the cylindrical radial direction.

  ADVANTAGE OF THE INVENTION According to this invention, when administering a chemical | medical solution to each nasal cavity, the nasal cavity administration container which can be easily administered with one hand can be obtained.

It is a perspective view which shows the barrel, plunger, plunger rod, gasket, and elastic member which comprise the nasal cavity administration container which concerns on embodiment of this invention. It is sectional drawing which shows the barrel, plunger, plunger rod, gasket, and elastic member which comprise the nasal cavity administration container which concerns on embodiment of this invention. It is a perspective view which shows the plunger which concerns on embodiment of this invention. It is sectional drawing which shows the preparation state of the nasal cavity administration container which concerns on embodiment of this invention. It is sectional drawing which shows the 1st administration start state of the nasal cavity administration container which concerns on embodiment of this invention. It is sectional drawing which shows the 1st administration completion state of the nasal cavity administration container which concerns on embodiment of this invention. It is sectional drawing which shows the press release state of the nasal cavity administration container which concerns on embodiment of this invention. It is sectional drawing which shows the 2nd administration start state of the nasal cavity administration container which concerns on embodiment of this invention. It is sectional drawing which shows the 2nd administration completion state of the nasal cavity administration container which concerns on embodiment of this invention.

  A nasal cavity administration container according to an embodiment of the present invention will be described below with reference to the drawings. In the following embodiments, when referring to the number, amount, and the like, the scope of the present invention is not necessarily limited to the number, amount, and the like unless otherwise specified. In the embodiments described below, the same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated.

[Configuration of Nasal Administration Container 100]
With reference to FIGS. 1-3, the structure of the nasal cavity administration container 100 which concerns on embodiment is demonstrated. Referring to FIG. 1, the nasal cavity administration container 100 includes a barrel 1, a plunger 2, a plunger rod 3, a gasket 4, and an elastic member 5.

(Barrel 1)
With reference to FIG. 2, the barrel 1 has a first main body 10, a spray nozzle 12, a first opening 14, and a protrusion 16. The 1st main-body part 10 is formed in the cylinder shape. The 1st main-body part 10 is comprised from the large diameter part 10M and the small diameter part 10T whose cylinder diameter is smaller than the large diameter part 10M.

  Between the large diameter portion 10M and the small diameter portion 10T, the protruding portion 16 is formed to be inclined. The protruding portion 16 is configured to gradually protrude from the inner peripheral surface 10c of the first main body portion 10 toward the inner side in the cylinder radial direction as it goes from the large diameter portion 10M side to the small diameter portion 10T side. The first opening 14 is located at the other end 10 b of the first main body 10.

  The spray nozzle 12 is provided at one end 10 a of the first main body 10. The spray nozzle 12 is inserted into a nasal cavity (not shown). Through the opening 13 of the spray nozzle 12, the chemical solution is ejected in a mist form. Screw processing 15 may be applied to the peripheral edge of the spray nozzle 12. A predetermined device (not shown) is screwed into the peripheral portion of the spray nozzle 12 using the screw processing 15. The chemical | medical solution (adjuband) can be filled into the inside 10s of the 1st main-body part 10 from the spray nozzle 12 side using a predetermined | prescribed apparatus.

  The barrel 1 may further have a finger clip portion 18. In this case, the finger clip portion 18 is provided on the other end 10 b side of the first main body portion 10. The finger clip portion 18 extends from the outer peripheral surface 10d on the other end 10b side of the first main body portion 10 toward the outer side in the cylinder radial direction. By having the finger clip part 18, it becomes possible to administer a chemical | medical solution more easily.

(Plunger 2 and gasket 4)
Referring to FIG. 1, the plunger 2 has a second main body portion 20, a second opening portion 24, a first long hole portion 26, and a second long hole portion 28. The 2nd main-body part 20 is formed in the cylinder shape. The second opening 24 is located at the other end 20 b of the second main body 20.

  The length of the first long hole portion 26 is set to be longer than the distance from the front end portion 36a of the first locking portion 36 to be described later to the rear end portion 38b of the second locking portion 38 (see FIG. 2). The first long hole portion 26 extends in a direction parallel to the cylinder axis of the second main body portion 20. The length of the second long hole portion 28 is set longer than the distance from the front end portion 38a of the second locking portion 38 to be described later to the rear end portion 38b of the second locking portion 38. The second elongated hole portion 28 also extends in a direction parallel to the cylinder axis of the second main body portion 20. The 1st long hole part 26 and the 2nd long hole part 28 are arrange | positioned on the substantially identical straight line. The second long hole portion 28 is located closer to the second opening 24 than the first long hole portion 26.

  The gasket 4 is attached to a screw portion 22 provided at one end 20 a of the plunger 2. The plunger 2 is inserted into the barrel 1 together with the gasket 4 from one end 20a. The plunger 2 and the gasket 4 slide in the cylinder axis direction with respect to the inner peripheral surface 10 c of the barrel 1.

  The plunger 2 may further have a groove 29. In this case, the groove 29 is disposed on the inner peripheral surface 20c on the other end 20b side of the plunger 2 (second main body portion 20). The groove 29 extends in a direction parallel to the cylinder axis. A rib 39 (see FIG. 2) corresponding to the groove 29 is provided on the plunger rod 3 to be inserted into the plunger 2. With the rib 39 fitted in the groove 29, the plunger rod 3 is slid in the cylinder axis direction with respect to the inner peripheral surface 20 c of the plunger 2. The rotation operation of the plunger rod 3 around the cylinder axis is suppressed.

  With reference to FIG. 2 and FIG. 3, the plunger 2 may further include any or all of the first protrusion 25, the second protrusion 27, and the annular protrusion 23.

  Since the plunger 2 further includes the first protrusion 25, it is possible to appropriately set the volume of the liquid medicine to be administered to the nasal cavity. When the plunger 2 has the 1st projection part 25, the 1st projection part 25 is comprised including the projection part 25a and the leaf | plate spring part 25b. The protrusion 25a is provided near the end (on the lower side in FIG. 2) of the leaf spring 25b. The protruding portion 25a slightly protrudes from the leaf spring portion 25b toward the outside in the cylinder radial direction.

  The leaf spring portion 25b extends in a direction parallel to the cylinder axis. The leaf spring portion 25 b is formed by providing a substantially C-shaped cutout 25 c in the second main body portion 20. When the protrusion 25a is displaced toward the inner side in the cylinder radial direction, the leaf spring part 25b is elastically bent toward the inner side in the cylinder radial direction (see FIG. 4 for other details regarding the first protrusion 25). Reference later).

  Since the plunger 2 further includes the second projecting portion 27, it is possible to appropriately set the volume of the drug solution to be administered to the nasal cavity. When the plunger 2 has the 2nd projection part 27, the 2nd projection part 27 is comprised including the projection part 27a and the leaf | plate spring part 27b. The protrusion 27a is provided near the end (on the lower side in FIG. 2) of the leaf spring 27b. The protruding portion 27a slightly protrudes from the leaf spring portion 27b toward the outside in the cylinder radial direction.

  The leaf spring portion 27b extends in a direction parallel to the cylinder axis. The leaf spring portion 27 b is formed by providing a substantially C-shaped cutout 27 c in the second main body portion 20. When the protrusion 27a is displaced toward the inner side in the cylinder radial direction, the leaf spring part 27b is elastically bent toward the inner side in the cylinder radial direction (see FIG. 5 for other details regarding the second protrusion 27). Reference later).

  Since the plunger 2 has the annular protrusion 23, it is possible to appropriately set the volume of the drug solution to be administered to the nasal cavity. When the plunger 2 has the annular protrusion 23, the annular protrusion 23 is disposed on the outer peripheral surface 20 d of the second main body portion 20. The annular protrusion 23 is formed in an annular shape so as to protrude outward from the outer peripheral surface 20d of the second main body portion 20 in the cylinder radial direction (see FIG. 9 for other details regarding the annular protrusion 23). Will be described later).

(Plunger rod 3 / elastic member 5)
With reference to FIG. 1, the plunger rod 3 includes a third main body portion 30, a pressing portion 34, a first locking portion 36, and a second locking portion 38.

  Referring to FIG. 2, the third main body 30 includes a support 30M and a leaf spring 30L. The support portion 30M and the leaf spring portion 30L are continuous with the pressing portion 34 located on the other end 30b side. A substantially L-shaped notch 37 extends (in the direction perpendicular to the plane of FIG. 2) between the support portion 30M and the leaf spring portion 30L.

  The leaf spring portion 30L can be elastically bent in the direction indicated by the arrow AR6 around the other end 30b. The direction indicated by the arrow AR6 is a direction toward the inner side of the cylindrical diameter direction of the plunger 2 when the plunger rod 3 is inserted into the plunger 2.

  The first locking portion 36 is provided on the leaf spring portion 30L. The first locking portion 36 is located closer to the tip (upper side of FIG. 2) of the leaf spring portion 30L. The first locking portion 36 protrudes from the leaf spring portion 30L in a direction toward the outer side in the cylinder radial direction. The front end portion 36a of the first locking portion 36 is gradually inclined toward the inner side in the cylinder radial direction from the portion on the other end 30b side toward the portion on the one end 30a side.

  Similar to the first locking portion 36, the second locking portion 38 is provided on the leaf spring portion 30L. The second locking portion 38 is located closer to the other end 30b than the first locking portion 36. Similar to the first locking portion 36, the second locking portion 38 protrudes from the leaf spring portion 30L toward the outside in the cylinder radial direction.

  When the first locking portion 36 is displaced toward the inside in the cylinder radial direction (in the direction indicated by the arrow AR6), the leaf spring portion 30L is also bent in the same direction. When the leaf spring portion 30L is bent, a restoring force is applied to the first locking portion 36 to displace the first locking portion 36 toward the outside in the cylinder radial direction. That is, the 1st latching | locking part 36 is displaced elastically toward the inner side of a cylinder radial direction.

  As the leaf spring portion 30L bends in the same direction, the second locking portion 38 is also displaced in the same direction. When the leaf spring portion 30L bends, a restoring force is also applied to the second locking portion 38 to displace the second locking portion 38 toward the outside in the cylinder radial direction. That is, the second locking portion 38 is also elastically displaced toward the inside in the cylinder radial direction.

  The plunger rod 3 is inserted into the plunger 2 from one end 30a. The elastic member 5 is disposed between a pedestal portion 32 provided at one end 30 a of the plunger rod 3 and a pedestal portion 21 provided on the inner peripheral surface 20 c on the one end 20 a side of the plunger 2.

  The plunger rod 3 slides in the cylinder axis direction with respect to the inner peripheral surface 20 c of the plunger 2 by being pressed by the pressing portion 34. The elastic member 5 opposes the pressing force applied to the pressing part 34. The elastic member 5 urges the plunger rod 3 inserted into the plunger 2 in the direction of extracting from the plunger 2.

  The elastic member 5 may be disposed in another place as long as it can urge the plunger rod 3 in the direction in which the plunger rod 3 is extracted from the plunger 2. The elastic member 5 may be arrange | positioned between the other end 20b of the plunger 2, and the press part 34 (surface 34a) of the plunger rod 3, for example. The elastic member 5 is not limited to the coil spring, and may be a rubber-like member as long as the above biasing is possible. The elastic member 5 may be configured to include a plate spring-like member as long as the above-described biasing is possible.

  With reference to FIG. 2, the plunger rod 3 may further include a rib 39. In this case, the rib 39 is provided so as to protrude from the third main body 30 toward the outer side in the cylinder radial direction. The rib 39 extends with a predetermined length in a direction parallel to the cylinder axis. A groove 29 corresponding to the rib 39 is provided in the plunger 2 into which the plunger rod 3 is inserted. With the rib 39 fitted in the groove 29, the plunger rod 3 is slid in the cylinder axis direction with respect to the inner peripheral surface 20 c of the plunger 2. The rotation operation of the plunger rod 3 around the cylinder axis is suppressed.

  When the plunger 2 has the first protrusion 25 and / or the second protrusion 27, the plunger rod 3 may have a recess 33. The recess 33 is located on the one end 30 a side of the plunger rod 3. The recess 33 is formed to be recessed from the back surface 35 of the plunger rod 3 toward the inside in the cylinder radial direction. The recess 33 extends with a predetermined length in a direction parallel to the cylinder axis. The back surface portion 35 slides with respect to the inner peripheral surface 20 c of the plunger 2. The operations of the recessed portion 33 and the back surface portion 35 will be described later.

[Operation and effect of nasal cavity container 100]
With reference to FIGS. 4-9, the effect | action and effect of the nasal cavity administration container 100 are demonstrated. When a medicine is administered to the nasal cavity using the nasal cavity administration container 100, the nasal cavity administration container 100 is in the preparation state S1 (FIG. 4), the first administration start state S2 (FIG. 5), and the first administration completion state S3 (FIG. 6). Then, the state sequentially shifts to the respective states of the pressed release state S4 (FIG. 7), the second administration start state S5 (FIG. 8), and the second administration completion state S6 (FIG. 9).

(Preparation state S1)
With reference to FIG. 4, the elastic member 5 is inserted into the plunger 2. Next, the plunger rod 3 is inserted into the plunger 2. As the plunger rod 3 is inserted into the plunger 2, the leaf spring portion 30 </ b> L is elastically bent toward the inner side in the cylinder radial direction around the other end 30 b.

  As the plunger rod 3 is further inserted into the plunger 2, the elastic member 5 is compressed. The plunger rod 3 is inserted into the plunger 2 until the rear end portion 38 b of the second locking portion 38 reaches the first long hole portion 26.

  When the rear end portion 38b of the second locking portion 38 reaches the first long hole portion 26, the second locking portion 38 is displaced outward in the cylindrical radial direction by the restoring force of the leaf spring portion 30L. The second locking portion 38 is locked to the first long hole portion 26. The 1st latching | locking part 36 is also displaced toward the outer side of a cylinder radial direction. The first locking portion 36 protrudes further outward in the cylinder radial direction from the outer peripheral surface 20d of the second main body portion 20 through the first elongated hole portion 26.

  The gasket 4 and the plunger 2 are sequentially inserted into the barrel 1 in a state where the second locking portion 38 is locked to the first long hole portion 26 by the urging force of the elastic member 5. The front end portion 36a of the first locking portion 36 and the protruding portion 16 (16a) of the barrel 1 are opposed to each other. A space (inside 10 s) surrounded by the gasket 4 and the barrel 1 is filled with a chemical solution (adjuband). In this way, the state shown in FIG. 4 is obtained as the preparation state S1.

  In the preparation state S1 described above, when the finger clip portion 18 is provided, the patient supports the barrel 1 so that the index finger and the middle finger touch the surface 18a and the thumb touches the back surface 34b of the pressing portion 34. In the above-mentioned preparation state S1, when the finger clip portion 18 is not provided, the patient can grasp the barrel 1 so that the little finger is positioned closer to the one end 10a and the thumb touches the back surface 34b of the pressing portion 34. Good.

  The pressing unit 34 is slowly pressed in the direction indicated by the arrow AR1 by the patient's thumb. The other end 20 b of the plunger 2 is pressed against the surface 34 a of the pressing portion 34. The plunger 2, the plunger rod 3, the gasket 4 and the elastic member 5 are integrally moved forward with respect to the barrel 1 (upward in the drawing).

  As the gasket 4 advances, the chemical liquid is gradually discharged from the spray nozzle 12. As the gasket 4 advances, unnecessary air is also evacuated from the spray nozzle 12. Thus, the nasal cavity administration container 100 transitions from the preparation state S1 to the first administration start state S2 (state shown in FIG. 5).

  As described above, the plunger 2 may further include the first protrusion 25. In this case, the first protrusion 25 is disposed on the second body 20 at the next position. In the preparation state S1 (or first administration start state S2 described below), the first locking portion 36 protrudes from the first long hole portion 26. The first protrusion 25 is positioned on the second main body 20 so that the protrusion 25a of the first protrusion 25 is located on the front side (on the one end 20a side) of the first locking portion 36. Arranged.

  As the pressing portion 34 is pressed, the first protrusion 25 advances toward the protruding portion 16 (16b). The first protrusion 25 advances by a distance L1. The first protrusion 25 abuts on the protrusion 16b. This contact makes the patient's thumb feel resistance. The patient stops pressing against the pressing unit 34. The chemical liquid is not discharged from the spray nozzle 12.

  Since the plunger 2 has the first protrusion 25, it is possible to accurately set the volume of the drug solution to be administered. By changing the position of the 1st projection part 25, it becomes possible to obtain freely the volume of the chemical | medical solution which should be administered.

(First administration start state S2, first administration completion state S3)
Referring to FIG. 5, in the first administration start state S <b> 2, the second locking portion 38 is locked to the first long hole portion 26 by the urging force of the elastic member 5. The elastic member 5 is compressed. The first locking portion 36 protrudes outward in the cylinder radial direction through the first long hole portion 26. The front end portion 36a of the first locking portion 36 and the protruding portion 16a face each other. In this state, the nasal cavity administration container 100 is inserted into one of the right and left nasal cavities.

  The patient resumes pressing against the pressing unit 34. The pressing portion 34 is pressed in the direction indicated by the arrow AR2 by the patient's thumb. The other end 20 b of the plunger 2 is pressed against the surface 34 a of the pressing portion 34. The plunger 2, the plunger rod 3, the gasket 4 and the elastic member 5 are integrally moved forward with respect to the barrel 1.

  As the gasket 4 advances, the chemical liquid is ejected from the spray nozzle 12. Usually, in order for a chemical | medical solution to be appropriately administered toward the nasal cavity from the spray nozzle 12, the press part 34 is pressed vigorously.

  When the plunger 2 has the 1st projection part 25, the 1st projection part 25 bends elastically, when a patient provides the pressing force more than predetermined with respect to the press part 34. FIG. The inner peripheral surface 10c of the barrel 1 displaces the protruding portion 25a toward the inside in the cylinder radial direction. The leaf spring portion 25b is elastically bent toward the inside in the cylinder radial direction. The leaf spring portion 25b (and the protrusion portion 25a) is configured to be able to bend toward the space formed in the recess portion 33 when the plunger rod 3 has the recess portion 33. Good.

  The contact state between the first protrusion 25 and the protrusion 16b is released. Even if the plunger 2 has the first protrusion 25, the first protrusion 25 does not prevent the plunger 2, the plunger rod 3, the gasket 4, and the elastic member 5 from moving forward. The patient can administer the medicinal solution into the nasal cavity at high pressure (desired pressure) from the start of spraying.

  The plunger 2, the plunger rod 3, the gasket 4 and the elastic member 5 advance by a distance L2. A surface 34 a of the pressing portion 34 abuts on the other end 10 b of the barrel 1. This contact makes the patient's thumb feel a strong resistance. The patient stops pressing against the pressing unit 34. By this contact, the volume of the drug solution to be administered to one nasal cavity is set.

  As described above, the plunger 2 may further include the second protrusion 27. In this case, the second protrusion 27 is disposed such that the distance between the protrusion 27a of the second protrusion 27 and the protrusion 16 is equal to the distance L2 in the first administration start state S2. Good.

  As the pressing portion 34 is pressed, the second protrusion 27 advances toward the protruding portion 16b. The second protrusion 27 advances by a distance L2. The 2nd projection part 27 contact | abuts to the protrusion part 16b. The contact of the second protrusion 27 with the protruding portion 16b and the contact of the surface 34a of the pressing portion 34 with the other end 10b of the barrel 1 may be simultaneous. By this contact, the patient stops pressing against the pressing portion 34.

  Since the plunger 2 has the second protrusion 27, it is possible to more appropriately set the volume of the drug solution to be administered. By changing the position of the second protrusion 27, the volume of the drug solution to be administered can be freely obtained.

  As the pressing portion 34 is pressed, the first locking portion 36 also moves forward. The 1st latching | locking part 36 advances toward the protrusion part 16a, and contact | abuts to the protrusion part 16a after that. As the pressing portion 34 is further pressed, the protruding portion 16a displaces the first locking portion 36 in the direction indicated by the arrow AR6. The leaf spring portion 30L is elastically bent in the same direction with the other end 30b as a center.

  Following the displacement of the first locking portion 36, the second locking portion 38 is also displaced in the same direction. The locked state of the second locking portion 38 to the first long hole portion 26 is released. Thus, the nasal cavity administration container 100 transitions from the first administration start state S2 to the first administration completion state S3 (state shown in FIG. 6).

(Press release state S4)
Referring to FIG. 6, the patient releases the pressure on pressing portion 34. The nasal cavity administration container 100 transitions from the first administration completion state S3 to the press release state S4 (state shown in FIG. 7).

  Release of the pressing to the pressing part 34 can be easily realized only by removing the force of the thumb pressing the pressing part 34. According to the nasal cavity administration container 100, unlike the original described at the beginning, it is not necessary to rotate the plunger rod. According to the nasal cavity administration container 100, it is not necessary to use both hands.

  Referring to FIG. 7, as the pressure on pressing portion 34 is released, plunger rod 3 is retracted in the direction indicated by arrow AR <b> 4 by the restoring force of elastic member 5. On the other hand, the position of the gasket 4 and the plunger 2 does not change due to the frictional force between the gasket 4 and the barrel 1.

  At this time, when the plunger 2 has the second protrusion 27, the leaf spring part 27 b (the inner peripheral surface side) of the second protrusion 27 and the back part 35 of the plunger rod 3 slide. It is good to be configured to do so. The back surface portion 35 suppresses the leaf spring portion 27b from bending toward the inside in the cylinder radial direction. When the plunger rod 3 moves backward, the restoring force of the elastic member 5 may act in the direction in which the plunger 2 moves forward. Even in this case, since the leaf spring portion 27b does not bend inward in the cylinder radial direction, the contact state between the protruding portion 27a of the second protruding portion 27 and the protruding portion 16b is not released. Since the plunger 2 and the gasket 4 do not move forward, it is possible to prevent the chemical liquid from leaking unexpectedly.

  When the plunger rod 3 moves backward, the leaf spring 30L is elastically bent toward the inner side in the cylinder radial direction. When the contact state between the first locking portion 36 and the protruding portion 16a is released, the second locking portion 38 tends to be displaced toward the outside in the cylinder radial direction by the restoring force of the leaf spring portion 30L. Therefore, the patient needs to retract the pressing portion 34 at a predetermined speed or higher so that the second locking portion 38 is not locked again in the first long hole portion 26.

  In other words, referring to FIG. Time T0 is a moment when the pressing portion 34 is retracted and the contact state between the first locking portion 36 and the protruding portion 16a is released. After time T0, the rear end portion 38b of the second locking portion 38 is displaced outward in the cylindrical radial direction, and this rear end portion 38b reaches above the paper surface of the rear end portion 26b of the first long hole portion 26. The time required to do this is defined as time T1. After the time T0, the surface portion 38c of the second locking portion 38 retreats downward in the drawing, and this surface portion 38c is located on the inner periphery located between the first long hole portion 26 and the second long hole portion 28. The time required to reach the left side of the surface 10ca is defined as time T2.

  The patient needs to release the pressure on the pressing portion 34 so that the time T2 is shorter than the time T1. In order to make the time T2 shorter than the time T1, it is preferable to increase the biasing force of the elastic member 5 (when the elastic member 5 is a coil spring, the spring constant). By releasing the pressing on the pressing portion 34 so that the time T2 is shorter than the time T1, the plunger rod 3 is connected to the plunger 2 while the surface portion 38c of the second locking portion 38 is in contact with the inner peripheral surface 10ca. Retreat toward the other end 20b side.

  The plunger rod 3 moves backward by a distance L3 (see FIG. 6) until the front end portion 38a of the second locking portion 38 reaches the second elongated hole portion 28. When the front end portion 38a of the second locking portion 38 reaches the second elongated hole portion 28, the second locking portion 38 is indicated by an arrow AR7 toward the outer side in the cylinder radial direction by the restoring force of the leaf spring portion 30L. It is displaced in the direction (see FIG. 8). The second locking portion 38 is locked to the second long hole portion 28 by the urging force of the elastic member 5.

  The first locking portion 36 may be configured to protrude outward in the cylinder radial direction through the first long hole portion 26. Thus, the nasal cavity administration container 100 transitions from the pressed release state S4 to the second administration start state S5 (state shown in FIG. 8).

(Second administration start state S5, second administration completion state S6)
Referring to FIG. 8, in the second administration start state S <b> 5, the second locking portion 38 is locked to the second long hole portion 28. In this state, the nasal cavity administration container 100 is inserted into the other nasal cavity of the left and right.

  The patient resumes pressing against the pressing unit 34. The pressing part 34 is pressed in the direction indicated by the arrow AR5. The front end portion 28 a of the second elongated hole portion 28 is pressed against the front end portion 38 a of the second locking portion 38. The plunger 2, the plunger rod 3, the gasket 4 and the elastic member 5 are integrally moved forward with respect to the barrel 1. As the gasket 4 advances, the chemical liquid is ejected from the spray nozzle 12.

  Referring to FIG. 9, when the plunger 2 has the second protrusion 27, the second protrusion 27 is elastic when the patient applies a pressing force more than a predetermined value to the pressing portion 34. Flex. The inner peripheral surface 10c of the barrel 1 displaces the protrusion 27a toward the inner side in the cylinder radial direction. The leaf spring portion 27b is elastically bent toward the inside in the cylinder radial direction. The leaf spring portion 27b (and the projection portion 27a) is configured to be able to bend toward the space formed in the recess portion 33 when the plunger rod 3 has the recess portion 33. Good.

  The contact state between the second protrusion 27 and the protrusion 16 (16b) is released. Even when the plunger 2 has the second protrusion 27, the second protrusion 27 does not prevent the plunger 2, the plunger rod 3, the gasket 4 and the elastic member 5 from moving forward. The patient can administer the medicinal solution into the nasal cavity at high pressure (desired pressure) from the start of spraying.

  The plunger 2, the plunger rod 3, the gasket 4 and the elastic member 5 advance by a distance L4 (see FIG. 8). The front end of the gasket 4 abuts on the inner peripheral surface 10 c on the one end 10 a side of the barrel 1. This contact makes the patient's thumb feel a strong resistance. The patient stops pressing against the pressing unit 34. By this contact, the volume of the drug solution to be administered to the other nasal cavity is set. The chemical liquid is no longer ejected from the spray nozzle 12. Thus, the nasal cavity administration container 100 transitions from the second administration start state S5 to the second administration completion state S6 (state shown in FIG. 9). Administration of the drug to each nasal cavity is complete.

  As described above, the plunger 2 may further include the annular protrusion 23. In this case, the annular protrusion 23 is arranged so that the distance between the annular protrusion 23 and the protrusion 16 is equal to the distance L4 in the second administration start state S5 (see FIG. 8). Good.

  As the pressing portion 34 is pressed, the annular protrusion 23 advances toward the protruding portion 16. The annular protrusion 23 advances by a distance L4. The annular protrusion 23 abuts on the protrusion 16. The contact of the annular protrusion 23 with the protrusion 16 and the contact of the front end of the gasket 4 with the inner peripheral surface 10c on the one end 10a side of the barrel 1 may be simultaneous. By this contact, the patient stops pressing against the pressing portion 34. The chemical liquid is no longer ejected from the spray nozzle 12.

  As mentioned above, although the form for implementing invention of this invention was demonstrated, it should be thought that the form disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 barrel, 2 plunger, 3 plunger rod, 4 gasket, 5 elastic member, 10 first body, 10a, 20a, 30a one end, 10b, 20b, 30b other end, 10c, 10ca, 20c inner peripheral surface, 10d , 20d outer peripheral surface, 10M large diameter portion, 10s inside, 10T small diameter portion, 12 spray nozzle, 13 opening portion, 14 first opening portion, 15 screw machining, 16 projecting portion, 18 finger clip portion, 18a, 34a surface, 20 2nd body part, 21 and 32 base part, 22 screw part, 23 annular projection part, 24 2nd opening part, 25 1st projection part, 25a, 27a projection part, 25b, 27b, 30L leaf spring part, 25c, 27c Notch, 26 1st slot, 27 2nd projection, 28 2nd slot, 28a, 36a, 38a Front end, 29 groove, 30 3rd body Part, 30M support part, 33 depression part, 34 pressing part, 34b back surface, 35 back surface part, 36 first locking part, 26b, 36b, 38b rear end part, 37 notch, 38 second locking part, 38c surface part 39, Rib, 100 Nasal administration container, AR1, AR2, AR4 to AR7 arrows, L1 to L4 distance, S1 preparation state, S2 first administration start state, S3 first administration complete state, S4 press release state, S5 second administration Start state, S6 second administration complete state.

Claims (3)

A cylindrical first main body portion (10) filled with a predetermined chemical in the interior (10s), a spray nozzle (12) provided at one end (10a) of the first main body portion (10), and the first 1st opening part (14) provided in the other end (10b) of 1 main-body part (10), and the inner peripheral surface (10c) of said 1st main-body part (10) toward the inner side of a cylinder radial direction A barrel (1) having a protruding portion (16) provided in a protruding manner;
A cylindrical second main body (20), a second opening (24) provided at the other end (20b) of the second main body (20), and a second main body (20). A first elongate hole portion (26) extending in a direction parallel to the cylinder axis direction, and provided closer to the second opening (24) than the first elongate hole portion (26), is parallel to the cylinder axis direction. A second elongated hole portion (28) extending in any direction, inserted into the barrel (1) from one end (20a) side, and with respect to the inner peripheral surface (10c) of the barrel (1) A plunger (2) slid in the cylinder axis direction;
The inner peripheral surface (10c) of the barrel (1) is attached to one end (20a) of the second main body (20) and inserted into the barrel (1) together with the plunger (2). And a gasket (4) for enclosing the chemical in the interior (10s),
A third main body portion (30), a pressing portion (34) provided at the other end (30b) of the third main body portion (30), and a third main body portion (30); A first locking portion (36) that protrudes toward the outside of the tube and is elastically displaceable toward the inside in the cylinder radial direction, and closer to the pressing portion (34) than the first locking portion (36) Provided in the third main body portion (30) of the first main body portion (30), protrudes outward in the cylindrical radial direction, and displaces following the first locking portion (36) inward in the cylindrical radial direction. Two locking portions (38), inserted into the second main body portion (20) from one end (30a) side, and the cylinder with respect to the inner peripheral surface (20c) of the second main body portion (20). A plunger rod (3) slid in the axial direction;
An elastic member (5) for urging the plunger rod (3) inserted into the plunger (2) in a direction to be extracted from the plunger (2);
With
In the first administration start state (S2), the second locking portion (38) is locked to the first long hole portion (26), the elastic member (5) is compressed, and the first locking portion (36) projects further outward in the cylindrical radial direction from the outer peripheral surface (20d) of the second main body portion (20) through the first elongated hole portion (26),
As the pressing portion (34) is pressed in the first administration start state (S2), the first locking portion (36) advances toward the protruding portion (16), and the first locking portion (36) abuts on the protrusion (16), the first locking portion (36) is elastically displaced toward the inside in the cylindrical radial direction, and the second locking portion (38) The locked state to the first slot (26) is released, the nasal cavity administration container (100) shifts to the first administration completed state (S3),
As the pressing against the pressing portion (34) is released in the pressing released state (S4) after the first administration completion state (S3), the pressing portion (34) and the elastic member (5) are restored by the restoring force. The second locking portion (38) is retracted, the second locking portion (38) is locked to the second elongated hole portion (28), and the nasal cavity administration container (100) is in the second administration start state. (S5)
As the pressing portion (34) is pressed in the second administration start state (S5), the plunger is locked by the locking of the second locking portion (38) to the second long hole portion (28). (2) is pressed against the plunger rod (3),
Nasal administration container. The second main body (20) further includes a first protrusion (25),
The first projecting portion (25) is located on the second body from the position where the first locking portion (36) protrudes through the first elongated hole portion (26) in the first administration start state (S2). It is arrange | positioned so that it may be located near the said one end (20a) of a part (20), protrudes toward the outer side of the said cylinder radial direction from the said outer peripheral surface (20d) of the said 2nd main-body part (20), and the said cylinder diameter Elastically displaceable inward of the direction,
In the preparation state (S1) before the first administration start state (S2), the first protrusion (25) advances toward the protrusion (16) as the pressing portion (34) is pressed. Then, the volume of the medicinal solution to be administered is set by the first projecting portion (25) coming into contact with the projecting portion (16), and the nasal cavity administration container enters the first administration start state (S2). Transition,
The nasal cavity administration container according to claim 1. The second main body (20) further includes a second protrusion (27),
The second protrusion (27) protrudes from the outer peripheral surface (20d) toward the outer side in the cylindrical radial direction and can be elastically displaced toward the inner side in the cylindrical radial direction,
As the pressing portion (34) is pressed in the first administration start state (S2), the second projecting portion (27) advances toward the protruding portion (16),
When the second protrusion (27) abuts on the protrusion (16), the first locking portion (36) is elastically displaced toward the inside in the cylindrical radial direction.
The nasal cavity administration container according to claim 1.

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