Container

Abstract

To provide a container that inhibits leakage of medicinal solution in the case of divided administration of the medicinal solution.SOLUTION: The container is for divided administration of a medicinal solution. The container includes: a barrel that is formed in a cylindrical shape having a tip end part and a proximal end part and that receives a medicinal solution inside; a rod that is inserted into the barrel from the proximal end side; a cylindrical rod support part that is attached to the proximal end part of the barrel and that regulates the push-in of the rod; and a rod movement regulation means that regulates the push-in of the rod in the middle of the push-in of the rod for the purpose of pouring out the medicinal solution from the tip end part of the barrel. The rod movement regulation means includes a support part side regulation part that regulates the push-in of the rod by being provided in the rod support part and by engaging with the rod. By the movement of the support part side regulation part from the engaged state with the rod, the regulated state of the push-in of the rod is released.SELECTED DRAWING: Figure 14

Description

Technical Field

[0001] The present invention relates to a container capable of administering a liquid medicine filled therein into the nasal cavity or oral cavity.

Background Art

[0002] Conventionally, as a container for separately administering a liquid medicine into the nasal cavity or oral cavity of a patient, a spray container capable of spraying the liquid medicine separately into both nasal cavities is known (Patent Document 1). The spray container includes a cylindrical syringe filled with a liquid medicine, a cap provided at the front end of the syringe, a plunger insertable into the syringe, and a stopper provided at the front end of the plunger. On the inner peripheral surface of the syringe, a pair of engaging protrusions project axially symmetrically. On the outer peripheral surface of the plunger, a pair of guide grooves are provided axially symmetrically. 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.

[0003] When the plunger advances when administering the liquid medicine using this spray container, it stops when half of the liquid medicine in the syringe is ejected. In this state, when the plunger is rotated to release the stop of the plunger, the plunger can further advance and the remaining liquid medicine in the syringe can be ejected.

[0004] Specifically, when administering the chemical solution, first, with the engaging protrusion of the syringe positioned at the front end of the first straight portion of the guide groove (state (3) in FIG. 3 of Patent Document 1), insert the tip of the cap into one nostril. When the plunger advances in this state, the engaging protrusion moves from the front end of the first straight portion, and half of the chemical solution in the syringe is injected into one nostril. When the rear end of the first straight portion is reached (state (4) in the same figure), the advancement of the plunger stops. Next, when the plunger is rotated 90° to the right, the engaging convex portion 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 of the advancement of the plunger is released (state (5) in the same figure). Further, insert the tip of the cap into the other nostril and advance the plunger. Then, 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 chemical solution in the syringe is injected into the other nostril (state (6) in the same figure).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] By the way, when injecting the chemical solution in divided portions like this, if the plunger is rotated between the previous injection and the subsequent injection, the stopper rotates due to this rotation, etc., and the sealing of the stopper against the syringe becomes weak, and there is a risk that the chemical solution may leak from the tip side of the syringe.

[0007] An object of the present invention is to provide a container that suppresses leakage of a chemical solution when the chemical solution is administered in divided portions.

Means for Solving the Problems

[0008] The container of the present invention is a container for dividing and administering a chemical solution, which is formed in a cylindrical shape having a tip end portion and a base end portion, and has a barrel in which the chemical solution is accommodated, a rod inserted into the barrel from the base end side, a cylindrical rod support portion attached to the base end portion of the barrel and capable of restricting the pushing-in of the rod, and rod movement restricting means capable of restricting the pushing-in of the rod during the pushing-in of the rod for pouring out the chemical solution from the tip end portion of the barrel. The rod movement restricting means includes a support portion side restricting portion provided on the rod support portion and locking to the rod to restrict the pushing-in of the rod. When the support portion side restricting portion moves from the state of locking to the rod, the restricted state of the pushing-in of the rod is released.

[0009] According to such a configuration, by moving the support portion side restricting portion of the rod support portion, the restricted state of the pushing-in of the rod can be released without moving the rod, so that leakage of the chemical solution when dividing and administering the chemical solution can be suppressed.

[0010] Further, in the container, the rod support portion includes an attachment portion attached to the base end portion of the barrel and a movable portion capable of changing its position with respect to the attachment portion. By moving the movable portion with respect to the attachment portion, the support portion side restricting portion may move and the restricted state of the pushing-in of the rod may be released.

[0011] According to such a configuration, when releasing the restricted state of the pushing-in of the rod, a stable operation is possible by moving the movable portion while holding the attachment portion.

Effect of the Invention

[0012] As described above, according to the present invention, it is possible to provide a container that suppresses leakage of a chemical solution when dividing and administering the chemical solution.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Embodiments for Carrying Out the Invention

[0014] Hereinafter, the container according to the embodiment of the present invention will be described with reference to FIGS. 1 to 23.

[0015] As shown in FIGS. 1 to 3, the container 1 is a container for dividing and administering a chemical solution. Specifically, the container 1 is, for example, a spray container capable of dividing and administering a mist-like chemical solution into both nostrils. This container 1 divides and administers the chemical solution twice, but may divide and administer the chemical solution into a plurality of times, three times or more. The chemical solution is a liquid chemical solution, for example, an influenza vaccine. The shape of the container 1 is substantially cylindrical.

[0016] Also, as shown in FIGS. 4 and 5, the container 1 includes a barrel 2 formed in a cylindrical shape having a tip end portion 20 and a base end portion 21, a rod 3 inserted into the barrel 2, and a cylindrical rod support portion 4 attached to the base end portion 21 of the barrel 2 and capable of restricting the pushing-in of the rod 3. Further, the container 1 includes a cap 5 and a piston 6.

[0017] The container 1 of the present embodiment includes rod movement restricting means 7 capable of restricting the pushing-in of the rod 3 during the pushing-in of the rod 3 for pouring out the chemical solution from the tip end portion 20 of the barrel 2. Further, the container 1 includes suction limiting means 8 for limiting the amount of the chemical solution sucked into the barrel 2, pressure accumulating means 9 for increasing the pouring-out pressure of the chemical solution, and rod rotation locking means 10 capable of restricting the rotation of the rod 3 with respect to the rod support portion 4.

[0018] Hereinafter, in the container 1, the side where the tip 20 of the barrel 2 is disposed (the lower side in FIGS. 1 and 3 to 23) is simply referred to as the "tip side", and the side where the base end 21 of the barrel 2 is disposed (the upper side in FIGS. 1 and 3 to 23) is referred to as the "base end side". Also, the axial direction of the container 1 is simply referred to as the "axial direction". Furthermore, the radial direction of the container 1 is simply referred to as the "radial direction".

[0019] When using the container 1, starting from the initial state where the rod 3 is pushed into the tip 20 of the barrel 2 (see FIG. 1), the rod 3 is lifted toward the base end side to the suction state where the chemical solution is sucked up (see FIG. 9). Next, the rod 3 is pushed in to perform the first chemical solution spraying (see FIG. 12). Furthermore, after rotating the rod support portion 4 about the axis of the container 1 as the rotation axis (see FIG. 17), the rod 3 is further pushed in to perform the second chemical solution spraying (see FIG. 21).

[0020] Hereinafter, each component of the container 1 will be described in detail.

[0021] The barrel 2 is a member for storing the chemical solution therein (see FIG. 4). The barrel 2 of the present embodiment includes, in addition to the tip 20 and the base end 21, a cylindrical portion 22 that connects the tip 20 and the base end 21. Further, the barrel 2 has a flange portion 23 that extends outward (radially outward of the cylindrical portion 22) from the entire outer circumference of one end in the axial direction of the base end 21.

[0022] The outer diameter of the tip 20 is smaller than the outer diameter of the cylindrical portion 22. The outer diameter of the cylindrical portion 22 is substantially the same at any part in the axial direction.

[0023] The barrel 2 is formed of, for example, a material that is transparent and can withstand the internal pressure applied when administering the chemical solution. Specifically, the material of the barrel 2 is a resin or glass that simply contains a cyclic olefin such as norbornene as a repeating unit. More specifically, the material of the barrel 2 is a transparent resin such as a COP (cyclic olefin polymer) that is a homopolymer of a cyclic olefin or a COC (cyclic olefin copolymer) that is a copolymer of a cyclic olefin and ethylene, etc., or glass.

[0024] The rod 3 is a member that is operated when sucking up and pouring out the chemical solution in the barrel 2. Further, the rod 3 is inserted into the barrel 2 from the proximal end side. This rod 3 has an axial shape.

[0025] The rod 3 of the present embodiment includes an axial rod main body portion 30, a pushing portion 31 provided at one end in the longitudinal direction of the rod main body portion 30, and a piston engaging portion 32 provided at the other end in the longitudinal direction of the rod main body portion 30. In this rod 3, the rod main body portion 30, the pushing portion 31, and the piston engaging portion 32 are integrally formed, but they may be connected by separate members. Further, the rod 3 is inserted into the barrel 2 in a posture where the pushing portion 31 is located on the proximal end side and the piston engaging portion 32 is located on the distal end side.

[0026] The pushing portion 31 is a portion where a finger is placed when pouring out the chemical solution. In the rod 3 of the present embodiment, the pushing portion 31 has a disc shape with a diameter larger than the outer diameter of the rod main body portion 30.

[0027] The piston engaging portion 32 is a portion that engages with the piston 6. In the rod 3 of the present embodiment, the piston engaging portion 32 has an axial shape with an outer diameter smaller than that of the rod main body portion 30. Further, a male screw is provided on the outer peripheral portion of the piston engaging portion 32.

[0028] The rod main body portion 30 is a portion that extends between the pushing portion 31 and the piston engaging portion 32. The rod main body portion 30 of the present embodiment has a base-end-side rotation-restricted portion 33 and a tip-end-side rotation-restricted portion 34 as rotation-restricted portions that restrict rotation about the central axis of the rod 3 (see FIG. 5). Further, the rod main body portion 30 has a movement-restricted portion 35 that can restrict the movement of the rod 3 toward the tip end side within the barrel 2. Furthermore, the rod main body portion 30 has a suction limit portion 36 that restricts the maximum amount of the chemical solution sucked up into the barrel 2. Also, the rod main body portion 30 has an axial base-end-side connecting portion 37 that connects the base-end-side rotation-restricted portion 33 and the movement-restricted portion 35, and an axial tip-end-side connecting portion 38 that connects the suction limit portion 36 and the piston engaging portion 32.

[0029] The base-end-side rotation-restricted portion 33 is a portion that restricts the rotation of the rod 3 with respect to the rod support portion 4 by contacting the rod support portion 4 in the initial state. Further, the base-end-side rotation-restricted portion 33 includes, for example, a shaft portion 330 and a plurality (specifically, four) of lock protrusions 331 that protrude from the shaft portion 330 in the outer diameter direction of the rod 3 (see FIGS. 7 and 8). In this base-end-side rotation-restricted portion 33, the plurality of lock protrusions 331 are provided at equal intervals in the circumferential direction of the rod 3. Further, the lock protrusions 331 extend to the outside in the radial direction beyond the outer edge in the radial direction of the base-end-side connection portion 37 (see FIG. 7).

[0030] The suction limit portion 36 is a member that restricts the movement of the rod 3 toward the base end side in the barrel 2 by contacting the rod support portion 4 during suction (see FIG. 5). In the rod 3 of the present embodiment, the suction limit portion 36 has an elastic feather shape that widens toward one end side in the longitudinal direction of the rod 3. Specifically, the suction limit portion 36 includes a shaft portion 360 that extends in the axial direction and a plurality of extension portions 361 that extend while widening toward one end side in the longitudinal direction of the rod 3. When the rod 3 is viewed from the axial direction, the plurality of extension portions 361 are arranged at equal intervals from each other.

[0031] The tip-end-side rotation-restricted portion 34 is a portion that restricts the rotation of the rod 3 with respect to the rod support portion 4 by contacting the rod support portion 4 in the suction state. Further, the tip-end-side rotation-restricted portion 34 includes, for example, a shaft portion 340 and a plurality (specifically, two) of lock protrusions 341 that protrude from the shaft portion 340 in the outer diameter direction of the rod 3. In this tip-end-side rotation-restricted portion 34, the plurality of lock protrusions 341 are provided at equal intervals in the circumferential direction of the rod 3. Further, when the rod 3 is viewed from the axial direction, the lock protrusions 341 extend to the outside beyond the outer edge in the radial direction of the base-end-side connection portion 37. Further, the lock protrusions 341 extend to substantially the same position as the outer edge in the radial direction of the lock protrusions 331.

[0032] In the rod 3 of the present embodiment, the rotationally locked portion 34 on the tip side has a plurality (for example, four) of pressure accumulating convex portions 342 protruding in the outer diameter direction of the rod 3 from the shaft portion 340 (see FIG. 4). The pressure accumulating convex portions 342 are arranged at positions on the shaft portion 340 where the locking convex portions 341 are not provided. Specifically, the pressure accumulating convex portions 342 include a plurality (for example, two) of base-end side pressure accumulating convex portions 342a arranged on the base-end side and a plurality (for example, two) of tip-side pressure accumulating convex portions 342b arranged on the tip side. In this rotationally locked portion 34 on the tip side, the plurality of base-end side pressure accumulating convex portions 342a are provided at equal intervals in the circumferential direction of the rod 3. The same applies to the tip-side pressure accumulating convex portions 342b.

[0033] The moving lock portion 35 is a rod-side restricting portion provided on the rod 3 and capable of restricting the pushing-in of the rod 3 (see FIG. 5). Specifically, in the state after the first pouring, the moving lock portion 35 is a portion that contacts the rod support portion 4 and locks the movement of the rod 3 toward the tip side within the barrel 2. Further, the moving lock portion 35 has a shaft portion 350 and a locking convex portion 351 protruding in the outer diameter direction of the rod 3 from the shaft portion 350. Two locking convex portions 351 are provided, but one or a plurality of three or more may be provided. The locking convex portions 351 are provided at equal intervals in the circumferential direction of the rod 3 (see FIG. 15). When there is one locking convex portion 351, for example, it may be provided continuously around the circumference of the rod 3.

[0034] In the rod 3 of the present embodiment, the shaft portions 330, 340, 350, 360, the base-end side connection portion 37, and the tip-side connection portion 38 of each configuration are continuous in the axial direction (see FIG. 5). Further, the shaft portions 330, 340, 350, 360, the base-end side connection portion 37, and the tip-side connection portion 38 of each configuration all extend linearly.

[0035] The rod support portion 4 is a member that can restrict the pushing-in of the rod 3 when the chemical solution is poured out. Further, the rod support portion 4 has a support portion side restricting portion that restricts the pushing-in of the rod 3 by locking to the rod 3. The rod support portion 4 of the present embodiment includes a mounting portion 40 attached to the barrel 2 and a movable portion 41 whose position relative to the mounting portion 40 can be changed. Further, the rod support portion 4 is substantially cylindrical. The outer diameter of the rod support portion 4 is larger than the outer diameter of the barrel 2.

[0036] The mounting portion 40 is a member whose rotational position with respect to the rod 3 is fixed. Further, the mounting portion 40 is a member whose axial position with respect to the barrel 2 is fixed. Further, the mounting portion 40 is a member attached to the barrel 2 and is attached to the base end portion 21 of the barrel 2. In the rod support portion 4 of the present embodiment, the mounting portion 40 includes a mounting main body portion 42 attached to the movable portion 41 and a mounting locking portion 43 attached to the barrel 2.

[0037] The mounting main body portion 42 is a portion disposed between the movable portion 41 and the mounting locking portion 43. Further, the mounting main body portion 42 is, for example, substantially cylindrical. Specifically, the mounting main body portion 42 has a plate-shaped seat wall portion 420 provided with a through hole through which the rod 3 is inserted, a side wall portion 421 extending from the outer peripheral portion of the seat wall portion 420 toward the base end side, and a pressure accumulation table portion 422 and a standing wall portion 423 respectively extending from the inner peripheral portion of the seat wall portion 420 toward the base end side (see FIGS. 6 and 7).

[0038] The seat wall portion 420 abuts on the base end portion 21 of the barrel 2 (for example, the flange portion 23 of the barrel 2). Specifically, the seat wall portion 420 is in the shape of an annular plate. Further, the seat wall portion 420 has a suction restricting portion 426 against which the suction limit 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 in the radial direction of the seat wall portion 420.

[0039] The side wall portion 421 constitutes the outer wall of the mounting portion 40. Also, 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 guiding portion 424 that guides the movement of the movable portion 41.

[0040] The movement guiding portion 424 is, for example, a through hole or groove extending along the circumferential direction, and specifically, is a long hole extending in the circumferential direction. In the rod support portion 4 of the present embodiment, a plurality (for example, two) of movement guiding portions 424 are provided (see Fig. 3). The shape and size of each movement guiding portion 424 are the same. The plurality of movement guiding portions 424 are provided at equal intervals in the circumferential direction of the side wall portion 421.

[0041] The pressure accumulation base portion 422 has a pressure accumulation portion 425 (see Fig. 6). In the rod support portion 4 of the present embodiment, a plurality (for example, two) of pressure accumulation base portions 422 are provided. The shape and size of each pressure accumulation base portion 422 are the same. The plurality of pressure accumulation base portions 422 are provided at equal intervals in the circumferential direction of the side wall portion 421. One pressure accumulation portion 425 is provided in each pressure accumulation base portion 422.

[0042] The standing wall portion 423 is a portion that guides the movement of the movement lock portion 35 in the axial direction (see Fig. 7). In the rod support portion 4 of the present embodiment, a plurality (for example, two) of standing wall portions 423 are provided. The shape and size of each standing wall portion 423 are the same. The plurality of standing wall portions 423 are provided at equal intervals in the circumferential direction of the side wall portion 421. Specifically, the two pressure accumulation base portions 422 are provided in a state of being sandwiched between the respective standing wall portions 423.

[0043] The attachment locking portion 43 is a portion that extends from the attachment main body portion 42 toward the tip side. Also, the attachment locking portion 43 is attached to the barrel 2, for example, by locking to the flange portion 23 of the barrel 2. The attachment locking portion 43 has a finger hook portion 430 that can be hooked with a finger when the rod 3 is pushed in or the like. The finger hook portion 430 is, for example, a flat plate shape provided with a through hole through which the barrel 2 can be inserted.

[0044] The movable part 41 is a member that releases the restricted state of the pushing-in of the rod 3 by moving with respect to the mounting part 40. Further, the movable part 41 has a support part side restricting part. In the rod support part 4 of the present embodiment, the movable part 41 includes an operation part 44 that is operated when moving with respect to the mounting part 40, and a rod movement lock part 45 as the support part side restricting part. Further, when the movable part 41 moves with respect to the mounting part 40, the support part side restricting part (for example, the rod movement lock part 45) moves to release the restricted state of the pushing-in of the rod 3. The movable part 41 has a substantially cylindrical shape. The outer diameter of the movable part 41 is larger than the outer diameter of the barrel 2.

[0045] The operation part 44 has a plate-shaped top wall part 440 provided with a through hole through which the rod 3 is inserted, and a side wall part 441 extending from the outer peripheral part of the top wall part 440 to the tip side.

[0046] The top wall part 440 constitutes the top plate of the movable part 41. Further, the top wall part 440 has an annular plate shape. The top wall part 440 has a rotation lock part 442 that restricts the rotation of the rod 3 by engaging with the base end side rotation-restricted part 33 of the rod 3.

[0047] The side wall part 441 constitutes the outer wall of the movable part 41. Further, the side wall part 441 has a cylindrical shape. A movement-guided part 443 that protrudes outward and is movable along the movement guiding part 424 of the mounting main body part 42 is provided on the side wall part 441 (see FIG. 1).

[0048] The rod movement lock part 45 includes a hanging part 450 extending from the top wall part 440 to the tip side, and a lock main body part 451 extending radially inward from the end part on the tip side of the hanging part 450 (see FIG. 7).

[0049] The lock main body part 451 restricts the pushing-in of the rod 3 by coming into contact with the movement lock part 35 of the rod 3.

[0050] The cap 5 is a part for extracting the chemical solution. The cap 5 of the present embodiment is configured to eject the chemical solution in a mist form.

[0051] The piston 6 is a member that can abut against the inner surface 200 located on the proximal end side of the distal end portion 20 of the barrel 2 (see FIG. 4). Further, the piston 6 is in close contact with the entire inner peripheral surface of the cylindrical portion 22 of the barrel 2. The distal end surface 60 of the piston 6 in the present embodiment abuts against the inner surface 200 of the distal end portion 20 of the barrel 2 when the administration of the chemical solution is completed (specifically, after the second injection of the chemical solution). Further, a female screw having a shape corresponding to a male screw provided on the outer peripheral portion of the piston engaging portion 32 is provided on the proximal end surface 61 of the piston 6.

[0052] Hereinafter, the operations and each state when using the container 1 will be described in detail.

[0053] In the initial state, the rod 3 is pushed in until the piston 6 reaches the distal end portion 20 of the barrel 2 (see FIGS. 4 and 5). At this time, the rod 3 is located at the foremost position (suction start position).

[0054] Further, in the initial state, the rotation of the rod 3 with respect to the rod support portion 4 is restricted by the rod rotation lock means 10. Specifically, the rod 3 is restricted from rotating with respect to the movable portion 41 of the rod support portion 4 by the rotation of the rotation lock portion 442 of the rod support portion 4 engaging with the rotation lock portion 33 on the proximal end side of the rod 3 (see FIGS. 6 and 8). Further, the rod 3 is restricted from rotating with respect to the mounting portion 40 of the rod support portion 4 by the movement lock portion 35 of the rod 3 engaging with the accumulator base portion 422 of the rod support portion 4. Thus, in the initial state, the rod rotation lock means 10 is constituted by a set of the rotation lock portion 33 on the proximal end side and the rotation lock portion 442, and a set of the movement lock portion 35 and the accumulator base portion 422.

[0055] Note that, in the initial state, the rod side restricting portion (for example, the movement lock portion 35) is located on the distal end side of the support portion side restricting portion (for example, the rod movement lock portion 45).

[0056] During suction (when moving toward the proximal end side of the rod 3), the liquid suction restricting means 8 restricts suction of the chemical solution into the container 1 in excess of a predetermined amount (see Fig. 11). The liquid suction restricting means 8 is a means for restricting further pulling up of the rod 3 from a state where a predetermined amount of the chemical solution has been sucked into the barrel 2. For example, 0.5 ml of the chemical solution can be sucked into the container 1.

[0057] Specifically, during suction, the rod 3 is pulled up until the liquid suction limit portion 36 of the rod 3 abuts against the liquid suction restricting portion 426 of the attachment main body portion 42. At this time, the rod 3 moves from the most distal position to the liquid suction completion position. The liquid suction completion position is the position where suction of the rod 3 is restricted by the liquid suction restricting means 8. Further, the liquid suction completion position is the start position (prior discharge start position) of the previous discharge (for example, the first spraying). At this time, the rod 3 is positioned at the start end (proximal end side end) of the discharge stroke (pushing-in stroke).

[0058] Also, in the state after suction, the liquid suction limit portion 36 of the rod 3 abuts against the liquid suction restricting portion 426 of the attachment main body portion 42. Specifically, the liquid suction limit portion 36 is deformed when moving toward the distal end side of the rod 3, and can be bent inward in diameter, so that it is easy to insert the rod 3 into the barrel 2 during assembly of the container 1.

[0059] Specifically, the liquid suction limit portion 36 restricts the position of the rod 3 during suction by abutting against the rod support portion 4 without being deformed and stopping when moving toward the proximal end side of the rod 3. In this way, in the state after suction, the liquid suction restricting means 8 is constituted by the liquid suction limit portion 36 and the liquid suction restricting portion 426.

[0060] Furthermore, during the suction process, the rotation of the rod 3 relative to the rod support portion 4 is restricted by the rod rotation locking means 10. Specifically, the rotation of the rod 3 relative to the rod support portion 4 is restricted by the engagement of the rotation-locked portion 34 on the tip side of the rod 3 with the rotation locking portion 442 of the rod support portion 4. Also, the rotation of the rod 3 relative to the rod support portion 4 is restricted by the engagement of the locking convex portion 331 with the rotation locking portion 442. In this way, during the suction process, the rod rotation locking means 10 is constituted by the rotation-locked portion 34 on the tip side and the rotation locking portion 442, and is also constituted by the locking convex portion 331 and the rotation locking portion 442.

[0061] In the state during the first chemical liquid spraying and after the first chemical liquid spraying, the rod movement restricting means 7 includes a support portion side restricting portion (for example, the rod movement locking portion 45) provided on the rod support portion 4 and engaging with the rod 3 to restrict the pushing-in of the rod 3. Specifically, during the first chemical liquid spraying, the rod 3 is pushed in until the movement locking portion 35 of the rod 3 abuts against the lock main 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 (the start position of the subsequent pouring). The first pouring completion position is the position where the pushing-in of the rod 3 is restricted by the rod movement restricting means 7. Also, the first pouring completion position is the position where the previous pouring (for example, the first spraying) is completed.

[0062] At this time, the rod movement restricting means 7 restricts the pushing-in movement of the rod 3. Specifically, in the state after the first chemical liquid spraying, the pushing-in of the rod 3 is restricted by the abutment of the movement locking portion 35 of the rod 3 against the lock main body portion 451 of the rod support portion 4 (see FIGS. 14 and 15). Also, the restriction of the rod 3 is released by the release of the rod movement restricting means 7 (see FIGS. 17, 18, and 19).

[0063] Furthermore, at the time of the first chemical liquid spraying, the pressure accumulation means 9 is composed of a pressure accumulation part 425 of the rod support part 4 and a pressure accumulation convex part 342 of the rod 3 (see FIG. 13). Specifically, at the time of the first chemical liquid spraying, when the rod 3 is pushed in, a resistance feeling occurs when the tip side pressure accumulation convex part 342b of the rod main body part 30 gets over the pressure accumulation part 425 in the attachment part 40 of the rod support part 4. Thereby, at the time of the first chemical liquid spraying, the rod 3 can be urged to a level at which the chemical liquid can be discharged in a mist form.

[0064] Note that at the time of the first chemical liquid spraying, a part of the chemical liquid sucked up from the container 1 (for example, half amount, specifically, 0.25 ml) is poured out.

[0065] Also, at the time of the first chemical liquid spraying, the rotation of the rod 3 with respect to the rod support part 4 is restricted by the engagement of the rotationally locked part 34 on the tip side of the rod 3 with the attachment main body part 42 of the rod support part 4 (see FIGS. 14 and 16). Specifically, with the locking convex part 341 of the rotationally locked part 34 on the tip side being arranged in the locking concave part 427 of the attachment main body part 42, the rotation of the rod 3 with respect to the rod support part 4 is restricted by the engagement of the rotationally locked part 34 on the tip side with the attachment main body part 42 (see FIG. 16).

[0066] In this container 1, after the first chemical liquid spraying, the regulation state of the pushing-in of the rod 3 is released by the movement of the support part side regulating part (for example, the rod movement locking part 45) from the position where it is locked to the rod 3. Note that at times other than the completion of the first chemical liquid spraying (initial state and at the time of the first chemical liquid spraying), since the rod 3 does not rotate with respect to the movable part 41, the rod movement locking part 45 does not move from the state where it is locked to the rod 3.

[0067] Also, after the first chemical liquid spraying, for example, the rod movement locking part 45 rotates and moves around the axial direction, whereby the regulation state of the pushing-in of the rod 3 is released. Therefore, when releasing the regulation state of the pushing-in of the rod 3, no extra axial force is applied to the rod 3.

[0068] In the container 1 of the present embodiment, the movement-guided portion 443 of the movable portion 41 of the rod support portion 4 moves along the movement-guiding portion 424 of the side wall portion 421 of the mounting portion 40, so that the rod movement locking portion 45 moves from the state of being locked to the rod 3 (see FIGS. 17, 18, and 19). Specifically, when viewed from the proximal end side, the rod movement locking portion 45 moves from a position overlapping the movement locking portion 35 of the rod 3 to a position not overlapping the movement locking portion 35, thereby releasing the state in which the rod movement locking portion 45 is locked to the movement locking portion 35. (See FIGS. 15 and 19)

[0069] Also, in this container 1, after the first chemical solution spraying, the rod movement restricting means 7 releases the movement restriction of the rod 3 by rotating and moving the movable portion 41 having an outer diameter larger than the outer diameter of the barrel 2 with respect to the mounting portion 40 about the axial direction. In this way, when releasing the movement restriction of the rod 3, since it is only necessary to rotate and move the movable portion 41 having a large outer diameter, this release operation can be easily performed.

[0070] At the time of the second chemical solution spraying, the rod 3 is pushed in until the piston 6 reaches the tip portion 20 of the barrel 2 (see FIG. 21). At this time, the rod 3 moves from the pre-dispensing completion position to the post-dispensing completion position (the most distal position). The post-dispensing completion position is the position where the subsequent chemical solution dispensing (for example, the second chemical solution spraying) is completed.

[0071] Also, at the time of the second chemical solution spraying, the pressure accumulation means 9 is composed of the pressure accumulation portion 425 of the rod support portion 4 and the pressure accumulation convex portion 342 of the rod 3. Specifically, at the time of the second chemical solution spraying, when the rod 3 is pushed in, a resistance feeling occurs when the proximal end side pressure accumulation convex portion 342a of the rod main body portion 30 gets over the pressure accumulation portion 425 in the mounting portion 40 of the rod support portion 4. Thereby, at the time of the second chemical solution spraying, the rod 3 can be urged to a level at which the chemical solution can be discharged in a mist form.

[0072] According to the above container 1, when the restricting part on the support part side of the rod support part 4 moves (for example, the lock main body part 451 moves from the position where it is locked with the movement lock part 35 of the rod 3), even if the rod 3 is not moved, the restricted state of pushing in the rod 3 can be released. Therefore, it is possible to suppress the leakage of the chemical solution when releasing the restricted state of pushing in the rod 3 for dividing and administering the chemical solution.

[0073] In the container 1 of the present embodiment, when the movable part 41 moves with respect to the mounting part 40, the restricted state of pushing in the rod 3 is released. Therefore, when releasing the restricted state of pushing in the rod 3, it is possible to perform a stable operation by moving the movable part 41 while holding the mounting part 40.

[0074] Also, in the container 1 of the present embodiment, in the rod movement restricting means 7, the restricting part on the support part side (for example, the lock main body part 451) provided on the rod support part 4 is restricted from rotating when the rod 3 is located between the pre-injection start position and the pre-injection completion position (the state shown in FIGS. 9 to 14), and rotation movement is permitted when the rod 3 reaches the pre-injection completion position. Thereby, it is possible to prevent the rotation movement restriction of the rod 3 from being accidentally released during the previous injection (for example, the first spraying).

[0075] For example, in this container 1, when the rod 3 is located between the pre-injection start position and the pre-injection completion position, the rotational movement of the movable part 41 with respect to the mounting part 40 is restricted and the rotational movement of the rod 3 with respect to the rod support part 4 is restricted. Specifically, the movement restricting means capable of restricting the movement of the restricting part on the support part side with respect to the rod 3 (specifically, the engagement between the pressure accumulation base part 422 of the mounting main body part 42 of the mounting part 40 and the locking convex part 341 of the rotationally locked part 34 on the tip side of the rod 3, and the engagement between the rotation locking part 442 of the movable part 41 and the locking convex part 341 of the rotationally locked part 34 on the tip side of the rod 3) restricts the rotation of the movable part 41 with respect to the mounting part 40.

[0076] Furthermore, in the container 1 of the present embodiment, when the liquid suction restricting means 8 restricts the suction of the chemical liquid, the rod-side restricting portion (for example, the movement lock portion 35) is located at a position separated from the proximal end side of the support portion-side restricting portion (for example, the lock main body portion 451) and is at the leading discharge start position which is the start position of the previous discharge (see FIG. 11). Also, at the leading discharge completion position where the rod 3 is pushed in from the leading discharge start position and the previous discharge is completed, the rod-side restricting portion (for example, the movement lock portion 35) engages with the support portion-side restricting portion (for example, the lock main body portion 451) from the proximal end side, thereby restricting the movement of the rod 3 in the tip direction (see FIG. 14). Further, in the state where the movement of the rod 3 in the tip direction is restricted, by rotating and moving the movable portion 41 (see FIG. 17), the support portion-side restricting portion (for example, the lock main body portion 451) that is engaged with the rod-side restricting portion (for example, the movement lock portion 35) can be moved to release the restriction (see FIG. 18). Thereby, while preventing the movement of the rod 3 in the tip direction from being erroneously restricted during the suction operation, the movement of the rod 3 in the tip direction can be surely restricted at the time of completion of the previous discharge.

[0077] Note that the container of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention. For example, the configuration of another embodiment can be added to the configuration of a certain embodiment, and a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment. Further, a part of the configuration of a certain embodiment can be deleted.

[0078] For example, the configurations of the rod 3, the rod support portion 4, etc. may be different from the above-described configurations.

[0079] Specifically, the shape of the movement lock portion 35 of the rod 3 may be a shape obtained by inverting the suction limit portion 36 in the axial direction. In this case, as shown in FIG. 24, the movement lock portion 35 may have a feather shape that has elasticity and spreads more toward the other end side in the longitudinal direction of the rod 3. More specifically, the movement lock portion 35 has a shaft portion 350 extending in the axial direction and a plurality of extending portions 352 that extend wider 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.

[0080] Further, the rod 3 of the above embodiment had two lock portions (the base-end-side rotation-restricted portion 33 and the tip-end-side rotation-restricted portion 34) as rotation lock portions that restrict rotation about the axis of the rod 3, but it may have one or a plurality of three or more lock portions.

[0081] The rod support portion 4 includes a mounting portion 40 and a movable portion 41 whose position with respect to the mounting portion 40 can be changed (specifically, it can be changed between a position that restricts the pushing-in (axial movement) of the rod 3 and a position that releases this restriction), but it may be composed only of the movable portion 41. Further, in the container 1 of the present embodiment, the movable portion 41 is configured to rotate with respect to the mounting portion 40, but it may be configured to slide in the axial direction or the radial direction.

[0082] Further, the rod support portion 4 (specifically, the mounting portion 40) was attached to the barrel 2 in advance, but it may be attached to the barrel 2 later (or may be attached to the barrel 2 by the user). Further, the rod support portion 4 was fixed to the barrel 2, but it may be detachably attached to the barrel 2.

[0083] The container 1 of the above embodiment was a spray container, but it may be a container that injects linearly (dispenses in a normal injection). Further, the container 1 may be a container that divides and administers a chemical solution into the oral cavity or the like.

[0084] Further, the container 1 may not be provided with at least one of the pressure accumulation means 9, the rod rotation lock means 10, and the suction limit means 8. That is, although the container 1 is provided with the rod movement restriction means 7, the pressure accumulation means 9, the rod rotation lock means 10, and the suction limit means 8, it suffices to be provided with at least the rod movement restriction means 7.

Explanation of Reference Numerals

[0085] 1... Container, 2... Barrel, 3... Rod, 4... Rod support portion, 5... Cap, 6... Piston, 7... Rod movement restriction means, 8... Suction limit 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 portion to be rotationally locked, 34... Tip end side portion to be rotationally locked, 35... Movement lock portion, 36... Suction limit portion, 37... Base end side connection portion, 38... Tip end side connection portion, 40... Mounting portion, 41... Movable portion, 42... Mounting main body portion, 43... Mounting locking portion, 44... Operating portion, 45... Rod movement lock portion, 60... Tip end face, 61... Base end face, 200... Inner surface, 330... Shaft portion, 331... Lock projection, 340... Shaft portion, 341... Lock projection, 342... Pressure accumulation projection, 342a... Base end side pressure accumulation projection, 342b... Tip end side pressure accumulation projection, 350... Shaft portion, 351... Lock projection, 352... Extension portion, 360... Shaft portion, 361... Extension portion, 420... Seat wall portion, 421... Side wall portion, 422... Pressure accumulation table portion, 423... Standing wall portion, 424... Movement guiding portion, 425... Pressure accumulation portion, 426... Suction restriction portion, 427... Lock recess, 430... Hanging finger portion, 440... Top wall portion, 441... Side wall portion, 442... Rotation lock portion, 443... Movement guided portion, 450... Vertical portion, 451... Lock main body portion

Claims

1. A container for administering a chemical solution in divided doses, a barrel formed in a cylindrical shape having a tip end portion and a base end portion, with the chemical solution accommodated therein, a rod inserted into the barrel from the base end side, a cylindrical rod support portion attached to the base end portion of the barrel and capable of restricting the pushing-in of the rod, rod movement restricting means capable of restricting the pushing-in of the rod during the pushing-in of the rod for pouring out the chemical solution from the tip end portion of the barrel, and suction limiting means for restricting the suction of a chemical solution into the barrel in an amount exceeding a predetermined amount, The suction limiting means is configured to restrict further pulling-up of the rod at a suction completion position where a predetermined amount of the chemical solution has been suctioned into the barrel by pulling up 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-in of the rod, and a support portion-side restricting portion provided on the rod support portion and capable of restricting the pushing-in of the rod by locking to the rod. The pushing-in of the rod is restricted during the pushing-in of the rod whose pulling-up has been restricted at the suction completion position by the suction limiting means, The rod is pushed in from the suction completion position where the rod-side restricting portion is separated from the base end side of the support portion-side restricting portion, and the pushing-in of the rod is restricted when the rod-side restricting portion abuts against the support portion-side restricting portion during the pushing-in, A container in which the restricted state of the pushing-in of the rod is released by moving with reference to the rod-side restricting portion from the state where the support portion-side restricting portion abuts against the rod-side restricting portion.

2. The rod support portion includes a mounting portion attached to the base end portion of the barrel and a movable portion capable of changing its position relative to the mounting portion, The container according to claim 1, wherein the movable portion moves relative to the mounting portion, so that the support portion-side restricting portion moves with reference to the rod-side restricting portion and the restricted state of the pushing-in of the rod is released.

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