JP7693188B2 - container - Google Patents

Description

The present invention relates to a container that can administer a medicinal liquid filled inside into the nostrils or oral cavity.

Conventionally, a spray container capable of spraying divided medicinal liquid into both nostrils has been known as a container for administering divided medicinal liquid into the patient's nostrils and oral cavity (Patent Document 1). The spray container includes a cylindrical syringe filled with medicinal liquid, a cap provided at the front end of the syringe, a plunger that can be inserted into the syringe, and a stopper provided at the front end of the plunger. A pair of engaging protrusions are provided axially symmetrically on the inner peripheral surface of the syringe. A pair of guide grooves are provided axially symmetrically on the outer peripheral surface of the plunger. Each guide groove includes a first straight portion extending in the axial direction, a bent portion having one end connected to the rear end of the first straight portion and extending in the circumferential direction, and a second straight portion extending rearward in the axial direction from the other end of the bent portion.

When using this spray container to administer medicinal liquid, the plunger moves forward and stops when half the medicinal liquid in the syringe has been sprayed. In this state, when the plunger is rotated to release the plunger's stop, the plunger can move forward further and the remaining medicinal liquid in the syringe can be sprayed.

Specifically, when administering the medicinal liquid, the tip of the cap is first inserted into one of the nostrils with the engaging protrusion of the syringe positioned at the front end of the first straight portion of the guide groove ((3) in Figure 3 of Patent Document 1). When the plunger advances in this state, the engaging protrusion moves from the front end of the first straight portion and half of the medicinal liquid in the syringe is sprayed into one of the nostrils. When the plunger reaches the rear end of the first straight portion ((4) in the same figure), the advancement of the plunger stops. Next, when the plunger is rotated 90° to the right, the engaging protrusion moves from the rear end of the first straight portion of the guide groove (one end of the bent portion) to the other end of the bent portion and the stop on the advancement of the plunger is released ((5) in the same figure). Furthermore, when the tip of the cap is inserted into the other nostril and the plunger is advanced, the engaging protrusion moves from the other end of the bent portion of the guide groove (the front end of the second straight portion) to the rear end of the second straight portion, and the remaining liquid medicine in the syringe is sprayed into the other nostril ((6) in the figure).

JP 2014-140588 A

However, when the liquid medicine is divided and injected in this way, if the plunger is rotated between the first and second injections, the rotation can cause the stopper to rotate, weakening the seal of the stopper against the syringe, and there is a risk of the liquid medicine leaking from the tip of the syringe.

The present invention aims to provide a container that prevents leakage of medicinal liquid when the medicinal liquid is administered in portions.

The container of the present invention is a container for dividing and administering a medicinal liquid, and includes a barrel formed in a cylindrical shape having a tip end and a base end, in which the medicinal liquid is contained, a rod inserted into the barrel from the base end side, a cylindrical rod support part attached to the base end of the barrel and capable of restricting the pushing of the rod, and a rod movement restricting means capable of restricting the pushing of the rod in the middle of the pushing of the rod to dispense the medicinal liquid from the tip end of the barrel, and the rod movement restricting means includes a support side restricting part provided on the rod support part and engaging with the rod to restrict the pushing of the rod, and the restricted state of the pushing of the rod is released when the support side restricting part moves from the state where it is engaged with the rod.

With this configuration, the restriction on pushing the rod can be released by moving the support-side restriction part of the rod support part without moving the rod, which makes it possible to prevent leakage of the medicinal liquid when it is divided and administered.

In addition, in the container, the rod support part may include an attachment part attached to the base end of the barrel and a movable part whose position relative to the attachment part can be changed, and the movable part may move relative to the attachment part, causing the support part side regulating part to move and releasing the regulated state of pushing the rod.

With this configuration, when releasing the restriction on pushing the rod, stable operation is possible by moving the movable part while holding the attachment part.

As described above, the present invention can provide a container that prevents leakage of medicinal liquid when the medicinal liquid is administered in portions.

FIG. 1 is a front view of a container according to the present embodiment in an initial position. FIG. 2 is a plan view of the container in an initial position. FIG. 3 is a side view of the container in an initial position. FIG. 4 is a vertical cross-sectional view taken along the line VI-VI in FIG. FIG. 5 is a vertical cross-sectional view taken along the line VV in FIG. FIG. 6 is an enlarged view at position VI in FIG. FIG. 7 is an enlarged view of position VII in FIG. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 9 is a front view of the container when the liquid medicine is being sucked up. FIG. 10 is a vertical cross-sectional view of the main part of FIG. FIG. 11 is a vertical cross-sectional view of the main part of FIG. FIG. 12 is a front view of the container after an initial pour. FIG. 13 is a vertical cross-sectional view of the main part of FIG. FIG. 14 is a vertical cross-sectional view of the main part of FIG. FIG. 15 is a cross-sectional view taken along the line XV-XV in FIG. FIG. 16 is a cross-sectional view taken along the line XVI-XVI in FIG. FIG. 17 is a front view of the container when the restricted state of pushing in the rod is released. FIG. 18 is a vertical cross-sectional view of the main part of FIG. FIG. 19 is a cross-sectional view taken along the line XIX-XIX in FIG. FIG. 20 is a vertical cross-sectional view of the main part of FIG. FIG. 21 is a front view of the container after the second pour. FIG. 22 is a vertical cross-sectional view of the main part of FIG. FIG. 23 is a vertical cross-sectional view of the main part of FIG. FIG. 24 is a schematic cross-sectional view of a container according to a modified example. FIG. 25 is a cross-sectional view taken along the line XXV-XXV of FIG.

The container according to an embodiment of the present invention will be described below with reference to Figures 1 to 23.

As shown in Figs. 1 to 3, container 1 is a container for administering divided medicinal liquid. Specifically, container 1 is, for example, a spray container that can administer divided mist-like medicinal liquid into both nostrils. This container 1 administers the medicinal liquid in two separate doses, but the medicinal liquid may also be administered in multiple doses, three or more times. The medicinal liquid is a liquid medicinal liquid, for example an influenza vaccine. Container 1 is approximately cylindrical in shape.

As shown in Figs. 4 and 5, the container 1 includes a barrel 2 formed in a cylindrical shape having a tip end 20 and a base end 21, a rod 3 inserted into the barrel 2, and a cylindrical rod support part 4 attached to the base end 21 of the barrel 2 and capable of restricting the pushing of the rod 3. The container 1 further includes a cap 5 and a piston 6.

The container 1 of this embodiment is equipped with a rod movement restriction means 7 capable of restricting the pushing of the rod 3 in the middle of pushing the rod 3 to dispense the medicinal liquid from the tip 20 of the barrel 2. The container 1 further includes a suction restriction means 8 that restricts the amount of medicinal liquid sucked up into the barrel 2, a pressure accumulation means 9 that increases the dispensing pressure of the medicinal liquid, and a rod rotation lock means 10 that can restrict the rotation of the rod 3 relative to the rod support part 4.

Hereinafter, in the container 1, the side where the tip 20 of the barrel 2 is located (the lower side in Fig. 1 and Figs. 3 to 23) will be referred to simply as the "tip side", and the side where the base end 21 of the barrel 2 is located (the upper side in Fig. 1 and Figs. 3 to 23) will be referred to simply as the "base side". The cylindrical axis direction of the container 1 will also be referred to simply as the "cylindrical axis direction". Furthermore, the radial direction of the container 1 will also be referred to simply as the "radial direction".

When using the container 1, the rod 3 is pushed all the way to the tip 20 of the barrel 2 in the initial state (see FIG. 1), and then raised toward the base end to suck up the liquid medicine (see FIG. 9). Next, the rod 3 is pushed in to perform the first spray of the liquid medicine (see FIG. 12). Furthermore, after the rod support part 4 is rotated around the cylindrical axis of the container 1 as the rotation axis (see FIG. 17), the rod 3 is pushed in further to perform the second spray of the liquid medicine (see FIG. 21).

The components of the container 1 are explained in detail below.

The barrel 2 is a member that contains a medicinal liquid inside (see FIG. 4). In addition to the tip end 20 and the base end 21, the barrel 2 in this embodiment has a tubular portion 22 that connects the tip end 20 and the base end 21. The barrel 2 also has a flange portion 23 that extends outward (diametrically outward of the tubular portion 22) from the entire outer circumference of one end of the base end 21 in the axial direction.

The outer diameter of the tip portion 20 is smaller than the outer diameter of the cylindrical portion 22. The outer diameter of the cylindrical portion 22 is approximately the same at any point in the cylindrical axis direction.

The barrel 2 is formed, for example, from a transparent material that can withstand the internal pressure applied when administering the medicinal liquid. Specifically, the material of the barrel 2 is a resin or glass that simply contains repeated cyclic olefins such as norbornene. More specifically, the material of the barrel 2 is a transparent resin such as COP (cycloolefin polymer), which is a homopolymer of cyclic olefins, or COC (cycloolefin copolymer), which is a copolymer of cyclic olefins and ethylene, etc., or glass.

The rod 3 is a member that is operated when sucking up and dispensing the medicinal liquid in the barrel 2. The rod 3 is inserted into the barrel 2 from the base end side. The rod 3 has an axial shape.

The rod 3 of this embodiment includes an axial rod body 30, a push-in portion 31 provided at one end of the rod body 30 in the longitudinal direction, and a piston engagement portion 32 provided at the other end of the rod body 30 in the longitudinal direction. In this rod 3, the rod body 30, the push-in portion 31, and the piston engagement portion 32 are integrally formed, but they may be connected to each other as separate members. The rod 3 is inserted into the barrel 2 in a position where the push-in portion 31 is located at the base end and the piston engagement portion 32 is located at the tip end.

The pushing portion 31 is the portion on which the finger is placed when injecting the medicinal liquid. In the rod 3 of this embodiment, the pushing portion 31 is a disk shape with a diameter larger than the outer diameter of the rod body portion 30.

The piston engagement portion 32 is a portion that engages with the piston 6. In the rod 3 of this embodiment, the piston engagement portion 32 is axially shaped with an outer diameter smaller than that of the rod body portion 30. In addition, a male screw is provided on the outer periphery of the piston engagement portion 32.

The rod body 30 is a portion extending between the pushing portion 31 and the piston engagement portion 32. The rod body 30 of this embodiment has a base end side rotation lock portion 33 and a tip end side rotation lock portion 34 as rotation lock portions that restrict rotation about the central axis of the rod 3 as the rotation axis (see FIG. 5). The rod body 30 also has a movement lock portion 35 that can restrict movement of the rod 3 toward the tip side in the barrel 2. The rod body 30 also has an absorption upper limit portion 36 that restricts the limit amount of the drug solution that can be sucked up into the barrel 2. The rod body 30 also has an axial base end side connection portion 37 that connects the base end side rotation lock portion 33 and the movement lock portion 35, and an axial tip side connection portion 38 that connects the absorption upper limit portion 36 and the piston engagement portion 32.

The base-end rotation locking portion 33 is a portion that restricts the rotation of the rod 3 relative to the rod support portion 4 by contacting the rod support portion 4 in the initial state. The base-end rotation locking portion 33 includes, for example, a shaft portion 330 and a plurality of (specifically, four) locking protrusions 331 protruding from the shaft portion 330 in the outer radial direction of the rod 3 (see Figures 7 and 8). In the base-end rotation locking portion 33, the multiple locking protrusions 331 are provided at equal intervals in the circumferential direction of the rod 3. The locking protrusions 331 extend radially outward beyond the outer edge of the base-end connection portion 37 in the radial direction (see Figure 7).

The suction upper precision section 36 is a member that restricts the movement of the rod 3 toward the base end within the barrel 2 by abutting against the rod support section 4 during suction (see FIG. 5). In the rod 3 of this embodiment, the suction upper precision section 36 is elastic and has a wing shape that widens toward one end in the longitudinal direction of the rod 3. Specifically, the suction upper precision section 36 has a shaft section 360 that extends in the axial direction, and a number of extension sections 361 that widen and extend toward one end in the longitudinal direction of the rod 3. When the rod 3 is viewed from the axial direction, the multiple extension sections 361 are arranged at equal intervals from each other.

The tip-side rotation-locked portion 34 is a portion that restricts the rotation of the rod 3 relative to the rod support portion 4 by abutting against the rod support portion 4 in the suction state. The tip-side rotation-locked portion 34 includes, for example, a shaft portion 340 and a plurality of (specifically, two) locking protrusions 341 protruding from the shaft portion 340 in the outer diameter direction of the rod 3. In the tip-side rotation-locked portion 34, the multiple locking protrusions 341 are provided at equal intervals in the circumferential direction of the rod 3. When the rod 3 is viewed from the axial direction, the locking protrusions 341 extend outward beyond the outer edge of the base-end connection portion 37 in the radial direction. Furthermore, the locking protrusions 341 extend to approximately the same position as the outer edge of the locking protrusions 331 in the radial direction.

In the rod 3 of this embodiment, the tip side rotation locking portion 34 has multiple (e.g., four) pressure accumulation protrusions 342 protruding from the shaft portion 340 in the outer diameter direction of the rod 3 (see FIG. 4). The pressure accumulation protrusions 342 are arranged in a portion of the shaft portion 340 where the locking protrusions 341 are not provided. Specifically, the pressure accumulation protrusions 342 include multiple (e.g., two) base end side pressure accumulation protrusions 342a arranged on the base end side and multiple (e.g., two) tip side pressure accumulation protrusions 342b arranged on the tip side. In this tip side rotation locking portion 34, the multiple base end side pressure accumulation protrusions 342a are arranged at equal intervals in the circumferential direction of the rod 3. The same applies to the tip side pressure accumulation protrusions 342b.

The moving lock portion 35 is a rod-side restricting portion provided on the rod 3 and capable of restricting the pushing of the rod 3 (see FIG. 5). Specifically, the moving lock portion 35 is a portion that, after the initial injection, abuts against the rod support portion 4 to lock the movement of the rod 3 toward the tip side within the barrel 2. The moving lock portion 35 also has a shaft portion 350 and a locking protrusion 351 protruding from the shaft portion 350 in the outer diameter direction of the rod 3. Two locking protrusions 351 are provided, but one or three or more may be provided. The locking protrusions 351 are provided at equal intervals in the circumferential direction of the rod 3 (see FIG. 15). When there is one locking protrusion 351, it may be provided continuously around the circumference of the rod 3, for example.

In the rod 3 of this embodiment, the shafts 330, 340, 350, 360, the base end connection portion 37, and the tip end connection portion 38 of each component are continuous in the axial direction (see FIG. 5). In addition, the shafts 330, 340, 350, 360, the base end connection portion 37, and the tip end connection portion 38 of each component all extend linearly.

The rod support part 4 is a member that can regulate the pushing of the rod 3 when the medicinal liquid is dispensed. The rod support part 4 also has a support part side regulating part that regulates the pushing of the rod 3 by engaging with the rod 3. The rod support part 4 of this embodiment includes an attachment part 40 attached to the barrel 2, and a movable part 41 that can change its position relative to the attachment part 40. The rod support part 4 is also approximately cylindrical. The outer diameter of the rod support part 4 is larger than the outer diameter of the barrel 2.

The mounting part 40 is a member whose rotational position relative to the rod 3 is fixed. The mounting part 40 is also a member whose axial position relative to the barrel 2 is fixed. The mounting part 40 is also a member attached to the barrel 2, and is attached to the base end 21 of the barrel 2. In the rod support part 4 of this embodiment, the mounting part 40 includes a mounting main body part 42 attached to the movable part 41, and a mounting lock part 43 attached to the barrel 2.

The mounting body 42 is a portion disposed between the movable portion 41 and the mounting locking portion 43. The mounting body 42 is, for example, substantially cylindrical. Specifically, the mounting body 42 has a plate-shaped seat wall portion 420 having a through hole through which the rod 3 is inserted, a side wall portion 421 extending from the outer periphery of the seat wall portion 420 toward the base end, and a pressure accumulator portion 422 and a standing wall portion 423 each extending from the inner periphery of the seat wall portion 420 toward the base end (see Figures 6 and 7).

The seat wall portion 420 abuts against the base end portion 21 of the barrel 2 (e.g., the flange portion 23 of the barrel 2). Specifically, the seat wall portion 420 is in the shape of an annular plate. The seat wall portion 420 also has a suction restricting portion 426 against which the suction upper end portion 36 of the rod 3 abuts from the tip side (see FIG. 7). The suction restricting portion 426 is located at the inner end portion of the seat wall portion 420 in the radial direction.

The side wall portion 421 constitutes the outer wall of the attachment portion 40. The side wall portion 421 is provided continuously along the circumferential direction of the barrel 2 (see FIG. 1). Specifically, the side wall portion 421 is cylindrical. Furthermore, the side wall portion 421 has a movement guide portion 424 that guides the movement of the movable portion 41.

The movement guide portion 424 is, for example, a through hole or groove extending in the circumferential direction, and more specifically, a long hole extending in the circumferential direction. In the rod support portion 4 of this embodiment, multiple movement guide portions 424 (for example, two) are provided (see FIG. 3). Each movement guide portion 424 has the same shape and size. The multiple movement guide portions 424 are provided at equal intervals in the circumferential direction of the side wall portion 421.

The pressure accumulator section 422 has a pressure accumulator section 425 (see FIG. 6). In the rod support section 4 of this embodiment, a plurality of pressure accumulator sections 422 (for example, two) are provided. Each pressure accumulator section 422 has the same shape and size. The plurality of pressure accumulator sections 422 are provided at equal intervals in the circumferential direction of the side wall section 421. Each pressure accumulator section 422 is provided with one pressure accumulator section 425.

The vertical wall portion 423 is a portion that guides the movement of the moving lock portion 35 in the axial direction (see FIG. 7). In the rod support portion 4 of this embodiment, multiple (e.g., two) vertical wall portions 423 are provided. Each vertical wall portion 423 has the same shape and size. The multiple vertical wall portions 423 are provided at equal intervals in the circumferential direction of the side wall portion 421. Specifically, the two pressure accumulator portions 422 are provided in a state where they are sandwiched between each vertical wall portion 423.

The mounting locking portion 43 is a portion that extends from the mounting body portion 42 toward the tip side. The mounting locking portion 43 is attached to the barrel 2, for example, by being engaged with the flange portion 23 of the barrel 2. The mounting locking portion 43 has a finger hook portion 430 on which a finger can be hooked when, for example, pushing in the rod 3. The finger hook portion 430 is, for example, in the form of a flat plate provided with a through hole through which the barrel 2 can be inserted.

The movable part 41 is a member that releases the restricted state of pushing the rod 3 by moving relative to the attachment part 40. The movable part 41 also has a support part side restricting part. In the rod support part 4 of this embodiment, the movable part 41 includes an operating part 44 that is operated when moving relative to the attachment part 40, and a rod movement lock part 45 as a support part side restricting part. Furthermore, by moving the movable part 41 relative to the attachment part 40, the support part side restricting part (e.g., the rod movement lock part 45) moves and releases the restricted state of pushing the rod 3. The movable part 41 is approximately cylindrical. The outer diameter of the movable part 41 is larger than the outer diameter of the barrel 2.

The operating section 44 has a plate-shaped top wall section 440 with a through hole through which the rod 3 is inserted, and a side wall section 441 extending from the outer periphery of the top wall section 440 toward the tip side.

The top wall portion 440 constitutes the top plate of the movable portion 41. The top wall portion 440 is in the shape of a circular ring plate. The top wall portion 440 has a rotation lock portion 442 that restricts the rotation of the rod 3 by engaging with the base end side rotation lock portion 33 of the rod 3.

The side wall portion 441 constitutes the outer wall of the movable portion 41. The side wall portion 441 is cylindrical. The side wall portion 441 is provided with a movement guided portion 443 that protrudes outward and is movable along the movement guide portion 424 of the mounting body portion 42 (see FIG. 1).

The rod movement locking portion 45 includes a hanging portion 450 extending from the top wall portion 440 toward the tip side, and a locking body portion 451 extending radially inward from the tip end of the hanging portion 450 (see FIG. 7).

The lock body 451 restricts the pushing of the rod 3 by abutting against the moving lock part 35 of the rod 3.

The cap 5 is the part that extracts the medicinal liquid. In this embodiment, the cap 5 is configured to spray the medicinal liquid in a mist form.

The piston 6 is a member that can come into contact with the inner surface 200 located on the base end side of the tip portion 20 of the barrel 2 (see FIG. 4). The piston 6 also comes into close contact with the entire inner circumferential surface of the tubular portion 22 of the barrel 2. In this embodiment, the tip surface 60 of the piston 6 comes into contact with the inner surface 200 of the tip portion 20 of the barrel 2 when administration of the medicinal liquid is completed (specifically, after the second injection of the medicinal liquid). The base end surface 61 of the piston 6 is provided with a female screw that corresponds to the male screw provided on the outer periphery of the piston engagement portion 32.

The operations and each state when using container 1 are explained in detail below.

In the initial state, the rod 3 is pushed in until the piston 6 reaches the tip 20 of the barrel 2 (see Figures 4 and 5). At this time, the rod 3 is located at the most distal position (the suction start position).

In addition, in the initial state, the rod rotation locking means 10 restricts the rotation of the rod 3 relative to the rod support part 4. Specifically, the base end side rotation locked part 33 of the rod 3 engages with the rotation lock part 442 of the rod support part 4, thereby restricting the rotation of the rod 3 relative to the movable part 41 of the rod support part 4 (see Figures 6 and 8). Furthermore, the movement lock part 35 of the rod 3 engages with the pressure accumulator part 422 of the rod support part 4, thereby restricting the rotation of the rod 3 relative to the attachment part 40 of the rod support part 4. Thus, in the initial state, the rod rotation locking means 10 is composed of a set of the base end side rotation locked part 33 and the rotation lock part 442, and a set of the movement lock part 35 and the pressure accumulator part 422.

In the initial state, the rod side restricting portion (e.g., the movement lock portion 35) is located closer to the tip than the support side restricting portion (e.g., the rod movement lock portion 45).

During suction (when the rod 3 moves toward the base end), the suction limiting means 8 restricts the suction of more than a certain amount of medicinal liquid into the container 1 (see FIG. 11). The suction limiting means 8 is a means for restricting further lifting of the rod 3 from a state in which a certain amount of medicinal liquid has been sucked into the barrel 2. For example, 0.5 ml of medicinal liquid is sucked into the container 1.

Specifically, during suction, the rod 3 is pulled up to a position where the suction upper depth portion 36 of the rod 3 abuts against the suction restricting portion 426 of the mounting body portion 42. At this time, the rod 3 moves from the most distal position to the suction completion position. The suction completion position is the position where suction by the rod 3 is restricted by the suction restricting means 8. The suction completion position is also the starting position (first pouring start position) of the previous pouring (e.g., the first spray). At this time, the rod 3 is located at the starting end (the base end end) of the discharge stroke (push-in stroke).

In addition, after suction, the suction upper depth portion 36 of the rod 3 abuts against the suction restricting portion 426 of the mounting body 42. Specifically, during suction (when the rod 3 moves toward the base end), the suction upper depth portion 36 does not deform and stops where it abuts against the rod support portion 4, thereby restricting the position of the rod 3 during suction. In this way, after suction, the suction restricting means 8 is composed of the suction upper depth portion 36 and the suction restricting portion 426.

The upper suction depth section 36 can be deformed when the rod 3 moves toward the tip side. Specifically, the extension section 361 can be bent radially inward, making it easier to insert the rod 3 into the barrel 2 when assembling the container 1.

Furthermore, during suction, the rod 3 is restricted from rotating relative to the rod support part 4 by the rod rotation locking means 10. Specifically, the rotation of the rod 3 is restricted relative to the rod support part 4 by the tip side rotation locked part 34 of the rod 3 engaging with the rotation lock part 442 of the rod support part 4. The rotation of the rod 3 is also restricted relative to the rod support part 4 by the lock protrusion 331 engaging with the rotation lock part 442. Thus, during suction, the rod rotation locking means 10 is composed of the tip side rotation locked part 34 and the rotation lock part 442, as well as the lock protrusion 331 and the rotation lock part 442.

During the first spray of the liquid medicine and after the first spray of the liquid medicine, the rod movement restriction means 7 includes a support side restriction portion (e.g., rod movement lock portion 45) that is provided on the rod support portion 4 and engages with the rod 3 to restrict the pushing of the rod 3. Specifically, during the first spray of the liquid medicine, the rod 3 is pushed in until the movement lock portion 35 of the rod 3 abuts against the lock body portion 451 of the rod support portion 4 (see FIG. 14). At this time, the rod 3 moves from the suction completion position to the first pouring completion position (last pouring start position). The first pouring completion position is a position where the pushing of the rod 3 is restricted by the rod movement restriction means 7. The first pouring completion position is also a position where the first pouring (e.g., the first spraying) is completed.

At this time, the rod movement restriction means 7 restricts the pushing movement of the rod 3. Specifically, after the first spray of the chemical solution, the movement lock portion 35 of the rod 3 abuts against the lock body portion 451 of the rod support portion 4, restricting the pushing of the rod 3 (see Figures 14 and 15). In addition, the restriction on the rod 3 is released by releasing the rod movement restriction means 7 (see Figures 17, 18, and 19).

Furthermore, when the liquid medicine is sprayed for the first time, the pressure accumulation means 9 is composed of the pressure accumulation section 425 of the rod support section 4 and the pressure accumulation protrusion 342 of the rod 3 (see FIG. 13). Specifically, when the liquid medicine is sprayed for the first time, when the rod 3 is pushed in, a sense of resistance is generated when the tip side pressure accumulation protrusion 342b of the rod main body section 30 overcomes the pressure accumulation section 425 at the mounting section 40 of the rod support section 4. This allows the rod 3 to be biased to a level at which the liquid medicine can be discharged in a mist form when the liquid medicine is sprayed for the first time.

During the first spray of the liquid medicine, a portion of the liquid medicine that has been drawn up (e.g., half the amount, specifically, 0.25 ml) is dispensed from the container 1.

When the liquid medicine is sprayed for the first time, the tip-side rotation-locked portion 34 of the rod 3 engages with the mounting body 42 of the rod support 4, thereby restricting the rotation of the rod 3 relative to the rod support 4 (see Figs. 14 and 16). Specifically, when the locking protrusion 341 of the tip-side rotation-locked portion 34 is positioned in the locking recess 427 of the mounting body 42, the tip-side rotation-locked portion 34 engages with the mounting body 42, thereby restricting the rotation of the rod 3 relative to the rod support 4 (see Fig. 16).

After the first spray of chemical solution in this container 1, the support side regulating section (e.g., rod movement lock section 45) moves from the position where it is engaged with the rod 3, thereby releasing the restriction on pushing the rod 3. Note that except at the completion of the first spray of chemical solution (initial state and at the time of the first spray of chemical solution), the rod 3 does not rotate relative to the movable section 41, and therefore the rod movement lock section 45 does not move from the state where it is engaged with the rod 3.

After the initial spray of the liquid medicine, the rod movement locking portion 45, for example, rotates about the axial direction, thereby releasing the restriction on the pushing of the rod 3. Therefore, when releasing the restriction on the pushing of the rod 3, no extra force is applied to the rod 3 in the axial direction.

In the container 1 of this embodiment, the movement guided portion 443 of the movable portion 41 of the rod support portion 4 moves along the movement guide portion 424 of the side wall portion 421 of the mounting portion 40, causing the rod movement lock portion 45 to move from a state in which it is engaged with the rod 3 (see Figures 17, 18, and 19). Specifically, when viewed from the base end side, the rod movement lock portion 45 moves from a position where it overlaps with the movement lock portion 35 of the rod 3 to a position where it does not overlap with the movement lock portion 35, and the state in which the rod movement lock portion 45 is engaged with the movement lock portion 35 is released. (See Figures 15 and 19)

In addition, in this container 1, after the first spray of the liquid medicine, the rod movement restriction means 7 releases the restriction on the movement of the rod 3 by rotating the movable part 41, which has an outer diameter larger than the outer diameter of the barrel 2, around the axial direction relative to the attachment part 40. In this way, when releasing the restriction on the movement of the rod 3, it is sufficient to rotate the movable part 41, which has a larger outer diameter, and this release operation can be easily performed.

When spraying the second liquid medicine, the rod 3 is pushed in until the piston 6 reaches the tip 20 of the barrel 2 (see FIG. 21). At this time, the rod 3 moves from the first injection completion position to the last injection completion position (the most forward position). The last injection completion position is the position where the injection of the last liquid medicine (e.g., the second liquid medicine spray) is completed.

Furthermore, during the second spray of the chemical solution, the pressure accumulation means 9 is composed of the pressure accumulation section 425 of the rod support section 4 and the pressure accumulation protrusion 342 of the rod 3. Specifically, during the second spray of the chemical solution, when the rod 3 is pushed in, a sense of resistance is generated when the base end side pressure accumulation protrusion 342a of the rod main body section 30 overcomes the pressure accumulation section 425 at the mounting section 40 of the rod support section 4. This allows the rod 3 to be biased to a level at which the chemical solution can be discharged in a mist form during the second spray of the chemical solution.

According to the above container 1, the support part side regulating part of the rod support part 4 moves (for example, the lock main body part 451 moves from the position where it engages with the movable lock part 35 of the rod 3), and thus the restricted state of pushing the rod 3 can be released without moving the rod 3, thereby preventing leakage of the medicinal liquid when the restricted state of pushing the rod 3 for administering divided medicinal liquid is released.

In the container 1 of this embodiment, the restricted state of pushing the rod 3 is released by moving the movable part 41 relative to the attachment part 40, so when releasing the restricted state of pushing the rod 3, stable operation is possible by moving the movable part 41 while holding the attachment part 40.

In addition, in the container 1 of this embodiment, the rod movement restriction means 7 of the support part side restriction part (e.g., the lock main body part 451) provided on the rod support part 4 restricts rotational movement when the rod 3 is located between the first pouring start position and the first pouring completion position (the state shown in Figures 9 to 14), and allows rotational movement when the rod 3 reaches the first pouring completion position. This prevents the restriction on the rotational movement of the rod 3 from being accidentally released during the first pouring (e.g., the first spray).

For example, in this container 1, when the rod 3 is located between the first pouring start position and the first pouring completion position, the rotational movement of the movable part 41 relative to the mounting part 40 is restricted, and the rotational movement of the rod 3 relative to the rod support part 4 is restricted. Specifically, the rotation of the movable part 41 relative to the mounting part 40 is restricted by a movement restriction means capable of restricting the movement of the support part side restriction part relative to the rod 3 (specifically, the engagement between the pressure accumulator part 422 of the mounting main body part 42 of the mounting part 40 and the lock convex part 341 of the tip side rotation locked part 34 of the rod 3, and the engagement between the rotation lock part 442 of the movable part 41 and the lock convex part 341 of the tip side rotation locked part 34 of the rod 3).

Furthermore, in the container 1 of this embodiment, when the suction limiting means 8 restricts the suction of the drug solution, the rod side restricting portion (e.g., the moving lock portion 35) is located at a position farther toward the base end than the support side restricting portion (e.g., the lock body portion 451), and is located at a first injection start position, which is the start position of the first injection (see FIG. 11). Also, when the rod 3 is pushed in from the first injection start position and the first injection is completed, the rod side restricting portion (e.g., the moving lock portion 35) engages with the support side restricting portion (e.g., the lock body portion 451) from the base end side, thereby restricting the movement of the rod 3 toward the tip (see FIG. 14). Also, in the state in which the movement of the rod 3 toward the tip is restricted, the movable portion 41 is rotated (see FIG. 17), and the support side restricting portion (e.g., the lock body portion 451) engaged with the rod side restricting portion (e.g., the moving lock portion 35) can be moved to release the restriction (see FIG. 18). This prevents the movement of the rod 3 toward the tip from being accidentally restricted during the suction operation, while reliably restricting the movement of the rod 3 toward the tip when the previous dispensing is completed.

The container of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the configuration of one embodiment can be added to the configuration of another embodiment, and part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Furthermore, part of the configuration of one embodiment can be deleted.

For example, the configuration of the rod 3, rod support portion 4, etc. may be different from the configuration described above.

Specifically, the shape of the movable locking portion 35 of the rod 3 may be a shape obtained by inverting the suction upper density portion 36 in the axial direction. In this case, the movable locking portion 35 may have an elastic wing shape that widens toward the other end side in the longitudinal direction of the rod 3, as shown in FIG. 24. More specifically, the movable locking portion 35 has a shaft portion 350 extending in the axial direction, and a plurality of extending portions 352 that widen toward the other end side in the longitudinal direction of the rod 3. As shown in FIG. 25, when the rod 3 is viewed from the axial direction, the plurality of extending portions 352 are arranged at equal intervals from each other.

In addition, the rod 3 in the above embodiment has two locking parts (the base end rotationally locked part 33 and the tip end rotationally locked part 34) as rotation locking parts that restrict rotation around the axis of the rod 3 as the rotation axis, but it may have one or more than two locking parts.

The rod support part 4 includes an attachment part 40 and a movable part 41 whose position relative to the attachment part 40 can be changed (specifically, it can be changed between a position that restricts the pushing of the rod 3 (axial movement) and a position that releases this restriction), but it may be composed of only the movable part 41. Also, in the container 1 of this embodiment, the movable part 41 is configured to rotate relative to the attachment part 40, but it may be configured to slide in the axial or radial direction.

In addition, the rod support part 4 (specifically, the attachment part 40) was attached to the barrel 2 in advance, but may be attached to the barrel 2 later (may be attached to the barrel 2 by the user). In addition, the rod support part 4 was fixed to the barrel 2, but may be detachably attached to the barrel 2.

Although the container 1 in the above embodiment is a spray container, it may be a container that sprays in a line (injects in a normal injection). In addition, the container 1 may be a container that administers divided medicinal liquid into the oral cavity, etc.

The container 1 may not have at least one of the pressure accumulation means 9, the rod rotation locking means 10, and the suction limiting means 8. In other words, the container 1 has the rod movement limiting means 7, the pressure accumulation means 9, the rod rotation locking means 10, and the suction limiting means 8, but it is sufficient if it has at least the rod movement limiting means 7.

1...container, 2...barrel, 3...rod, 4...rod support portion, 5...cap, 6...piston, 7...rod movement restriction means, 8...suction restriction means, 9...pressure accumulation means, 10...rod rotation lock means, 20...tip portion, 21...base end portion, 22...cylindrical portion, 23...flange portion, 30...rod main body portion, 31...pushing portion, 32...piston engagement portion, 33...base end side rotation lock portion, 34...tip end side rotation lock portion, 35...movement lock portion, 36...suction upper limit portion, 37...base end side connection portion, 38...tip side connection portion, 40...mounting portion, 41...movable portion, 42...mounting main body portion, 43...mounting lock portion, 44...operation portion, 45...rod movement lock portion, 60... Tip surface, 61...base end surface, 200...inner surface, 330...shaft portion, 331...locking protrusion, 340...shaft portion, 341...locking protrusion, 342...pressure accumulation protrusion, 342a...base end side pressure accumulation protrusion, 342b...tip side pressure accumulation protrusion, 350...shaft portion, 351...locking protrusion, 352...extension, 360...shaft portion, 361...extension, 420...seat wall portion, 421...side wall portion, 422...pressure accumulation base portion, 423...standing wall portion, 424...movement guide portion, 425...pressure accumulation portion, 426...suction restriction portion, 427...locking recess, 430...finger hook portion, 440...top wall portion, 441...side wall portion, 442...rotation lock portion, 443...movement guided portion, 450...hanging portion, 451...lock main body portion

Claims (2)

A container for administering a drug solution in portions,
a barrel having a cylindrical shape with a tip end and a base end and containing a medicinal solution therein;
A rod inserted into the barrel from a base end side;
a cylindrical rod support portion attached to a base end portion of the barrel and capable of restricting the pushing of the rod;
a rod movement restricting means for restricting the pushing of the rod in the middle of the pushing of the rod for dispensing the drug solution from the tip of the barrel;
and a suction limiting means for limiting the suction of a predetermined amount or more of the liquid medicine into the barrel ,
the suction limiting means is configured to restrict further lifting of the rod at a suction completion position where a predetermined amount of medicinal liquid is sucked into the barrel by lifting the rod from the tip end side to the base end side of the barrel,
the rod movement restricting means includes a rod side restricting portion provided on the rod and capable of restricting the pushing of the rod, and a support portion side restricting portion provided on the rod support portion and engaging with the rod to restrict the pushing of the rod , and restricts the pushing of the rod in the middle of pushing in the rod that has been restricted by the suction limiting means to be raised at the suction completion position,
the rod is pushed in from the suction completion position where the rod side regulating portion is separated from the base end side of the support portion side regulating portion, and the pushing of the rod is regulated by the rod side regulating portion abutting against the support portion side regulating portion during the pushing.
A container in which the restricted state of pushing the rod is released by moving the support part side restricting portion from a state in which the support part side restricting portion abuts the rod side restricting portion as a reference , using the rod side restricting portion as a reference. The rod support portion includes an attachment portion attached to a base end portion of the barrel and a movable portion whose position relative to the attachment portion can be changed,
The container according to claim 1 , wherein the movable portion moves relative to the attachment portion, causing the support portion side regulating portion to move relative to the rod side regulating portion , thereby releasing the restricted state of pushing the rod.