JP2021104241A - Instillation auxiliary tool having cylindrical structure and instillation device - Google Patents

Abstract

To provide an instillation auxiliary tool which can discharge a prescribed amount of a chemical solution without making a face oriented upward without complicating a structure, and an instillation device.SOLUTION: An instillation auxiliary tool 10 comprises a hollow cylindrical body 11 having a medical solution discharge hole 13 at a part of a sidewall 11a, and containing air therein, and a piston mechanism 20 having a piston 21 which can linearly move in a state of being accommodated in the cylindrical body 11. The cylindrical body 11 is constituted so that the piston 21 is internally inserted into one end side 17, and a discharge port of an instillation vessel can be connected to the other end side 18. The piston mechanism 20 is constituted so that the medical solution which is charged into the instillation vessel is sucked from the discharge port when retreating to one end side 17 from a first position in which the piston 21 blocks the medical solution discharge hole 13, and moving to a second position in which the piston releases the medical solution discharge hole 13, and when the piston 21 advances to the first position from the second position, discharges the medical solution from the medical solution discharge hole 13.SELECTED DRAWING: Figure 3

Description

The present invention relates to an eye drop assisting tool to which an eye drop container can be attached and an eye drop device provided with the eye drop container.

Conventionally, there is known an eye drop device having a configuration in which a chemical solution is ejected in order to realize eye drop with the face facing forward (see, for example, Patent Document 1). Patent Document 1 discloses a configuration in which a chemical dispenser (eye drop device) equipped with an eye drop container includes a cylinder having a communication port and a piston that can move in the cylinder. With such a configuration, the chamber in the cylinder is filled with the eye drop liquid from the communication port communicating with the discharge port of the eye drop container by retracting the piston, and the filled eye drop liquid is provided on the front side of the cylinder by the forward movement of the piston. It will flow out through the one-way flow control valve.

Special Table 2017-533798

If the eye drops can be applied with the face facing forward, the movement of turning the face upward becomes unnecessary, and the eye drops can be performed in a natural posture. In particular, an eye drop device capable of performing eye drop with the face facing forward is useful for a user who has a situation in which the face cannot be turned upward or the hand cannot be raised high. In this regard, although the drug dispenser disclosed in Patent Document 1 realizes eye drops with the face facing forward, it adopts a valve structure for the outflow portion of the drug solution, so that the valve ages. It is necessary to consider deterioration and the like. Further, since the chemical solution filled in the cylinder is discharged from the front side of the cylinder by the forward movement of the piston, the force in the forward direction of the piston is directly transmitted to the chemical solution (liquid), and the chemical solution is along the direction in which the piston operates. Since it is discharged, it is difficult to adjust the chemical discharge speed. Further, although the chemical dispenser is provided with an actuator button for operating the piston, the mechanism for moving the piston forward and backward by the actuator button is complicated.

In view of the above circumstances, there is a demand for an eye drop aid and an eye drop device capable of discharging a predetermined amount of a drug solution without turning the face upward without complicating the structure.

The characteristic configuration of the eye drop assisting tool according to the present invention is a hollow tubular body having a chemical discharge hole in a part of the side wall and containing air inside, and a hollow tubular body housed inside the tubular body. It is provided with a piston mechanism having a piston that can move straight in the state of being in the state, and the tubular body is configured such that the piston is inserted on one end side and the discharge port of the eye drop container can be connected on the other end side. When the piston moves backward from the first position of closing the chemical discharge hole to the one end side and moves to the second position of opening the chemical discharge hole, the piston mechanism is attached to the eye drop container. The point is that the filled chemical solution is sucked from the discharge port, and when the piston advances from the second position to the first position, the chemical solution is discharged from the chemical solution discharge hole.

According to this configuration, the air inside the tubular body becomes negative pressure due to the retracting motion of the piston inside the tubular body, the chemical solution is sucked from the eye drop container, and the negative pressure is eliminated when the chemical solution discharge hole is opened. .. After that, the air inside the tubular body is compressed by the forward movement of the piston, and the chemical liquid is discharged from the chemical liquid discharge hole at the timing when the chemical liquid discharge hole formed on the side wall of the tubular body is closed. In this way, the chemical solution is discharged from the chemical solution discharge hole on the side wall of the tubular body, so that the force in the forward direction of the piston works to compress the air inside the tubular body, and the chemical solution is released by the reaction force from the compressed air. It is discharged from the chemical discharge hole. That is, the force in the forward direction of the piston is transmitted to the chemical solution via the compressed air, and the chemical solution is discharged in the direction intersecting the forward direction of the piston. In this way, the force in the forward direction of the piston is transmitted to the chemical solution via the compressed air, so that the discharge speed of the chemical solution can be easily adjusted. Further, since the eye drop assisting tool is configured to have a tubular structure by a tubular body having a chemical discharge hole on the side wall and a piston mechanism, it is possible to apply eye drops with the face facing forward due to the simple structure. An eye drop aid can be realized.

Another characteristic configuration is that the tubular body is formed linearly in the longitudinal direction, and the piston is configured to be movable along the axis of the tubular body.

According to this configuration, since the piston operates linearly inside the tubular body, the piston can be operated smoothly. This improves the operability of the eye drop aid.

Another feature configuration is that it comprises a housing for accommodating the tubular body, and the piston mechanism has an operating portion that moves the piston between the first position and the second position.

According to this configuration, since the tubular body is housed in the housing, the user can support the tubular body by gripping the housing. Further, the piston can be easily operated by operating the operation unit. This improves the operability of the eye drop aid.

Another characteristic configuration is that the operating portion is provided with a pressing surface that is exposed to the outside of the housing and can be pressed.

According to this configuration, since the operation unit can be pressed from the outside of the housing, the operability of the eye drop assisting tool is improved.

Another characteristic configuration is that the operating portion comprises a support member connected to the one end side of the piston and an urging member for urging the piston to be held in the first position. It is in the point of having.

According to this configuration, when moving the piston from the first position to the second position, a pressing force or the like for operating the piston is required, but when moving the piston from the second position to the first position, Can move the piston by using the urging force of the urging member by releasing the pressing force or the like. As a result, the piston can be easily moved from the second position to the first position, so that the operability of the eye drop assisting tool is improved.

Another characteristic configuration is that the support member is connected to the piston at one end in the longitudinal direction and has a bent portion in the middle portion in the longitudinal direction.

When one end side of the support member in the longitudinal direction is connected to the piston and a bent portion is provided in the middle portion in the longitudinal direction as in this configuration, the operating portion for operating the piston is orthogonal to, for example, the axial direction of the piston. Since it can be provided at a position separated from the piston in the direction of movement, the operability of the operation unit can be improved.

Another characteristic configuration is that the tubular body and the piston are detachably configured from the housing.

Considering hygiene and the use of a plurality of eye drop containers, it is preferable to replace the tubular body and the piston with new ones when the eye drop containers are replaced. According to this configuration, since the tubular body and the piston are detachably attached to the housing, the tubular body and the piston can be easily replaced when the eye drop container is replaced. Since the housing does not come into direct contact with the chemical solution, it can be reused for a long period of time, and the housing or the like can be used as it is even when a plurality of eye drop containers are used. As described above, according to this configuration, when exchanging the eye drop container, the housing or the like can be used as it is, and it can be dealt with by exchanging the minimum necessary members.

Another characteristic configuration is that the eye drop container is configured to be removable from the tubular body.

According to this configuration, the eye drop container attached to the tubular body can be easily replaced.

Another characteristic configuration is that it is provided outside the tubular body and includes an eye drop guide portion that covers the periphery of the chemical discharge hole.

According to this configuration, since the posture of the eye drop assisting tool is appropriately determined by the eye drop guide portion, the position of the chemical solution discharge hole with respect to the user's eye can be set to an appropriate position. Further, by adjusting the depth of the eye drop guide portion, the distance from the drug solution discharge hole to the user's eye at the time of instillation can be made appropriate.

The characteristic configuration of the eye-dropping aid according to the present invention is a hollow tubular body having a chemical discharge hole in a part of the side wall and containing air inside, and a hollow tubular body housed inside the tubular body. It is provided with a piston mechanism having a piston that can move straight in the state of being in the state, a housing for accommodating the tubular body, and an instillation guide portion that is arranged outside the tubular body and covers the periphery of the chemical discharge hole. The tubular body is configured such that the piston is inserted on one end side and the discharge port of the instillation container can be connected on the other end side, and the tubular body is formed linearly in the longitudinal direction. The piston is configured to be movable along the axial core of the tubular body, and the piston mechanism retracts from the first position where the piston closes the chemical discharge hole to the one end side to the chemical discharge hole. When the chemical solution filled in the instillation container is sucked from the discharge port and the piston advances from the second position to the first position when moving to the second position to open the instillation container, the chemical solution discharge hole The piston mechanism is configured to discharge the chemical solution from the piston, and has an operation unit for moving the piston between the first position and the second position, and the operation unit is the one end of the piston. It has a support member connected to a side end portion and an urging member for urging the piston to be held in the first position, and the instillation container is detachable from the tubular body. It is in the point that it is done.

According to this configuration, the air inside the tubular body becomes negative pressure due to the retracting motion of the piston inside the tubular body, the chemical solution is sucked from the eye drop container, and the negative pressure is eliminated when the chemical solution discharge hole is opened. .. After that, the air inside the tubular body is compressed by the forward movement of the piston, and the chemical liquid is discharged from the chemical liquid discharge hole at the timing when the chemical liquid discharge hole formed on the side wall of the tubular body is closed. In this way, the chemical solution is discharged from the chemical solution discharge hole on the side wall of the tubular body, so that the force in the forward direction of the piston works to compress the air inside the tubular body, and the chemical solution is released by the reaction force from the compressed air. It is discharged from the chemical discharge hole. That is, the force in the forward direction of the piston is transmitted to the chemical solution via compressed air, and the chemical solution is discharged in the direction intersecting the forward direction of the piston. In this way, the force in the forward direction of the piston is transmitted to the chemical solution via the compressed air, so that the discharge speed of the chemical solution can be easily adjusted.

According to this configuration, since the eye drop aid is composed of a tubular body having a chemical discharge hole on the side wall and a piston mechanism, the eye drop aid can be instilled with the face facing forward due to a simple structure. Can be realized. Further, by having an operation unit for operating the piston, operability is improved. Further, since the eye drop container is removable from the tubular body, the eye drop container can be easily replaced.

The characteristic configuration of the eye drop device according to the present invention is a hollow tubular body having a chemical discharge hole in a part of a side wall and containing air inside, and a hollow tubular body housed inside the tubular body. It is provided with a piston mechanism having a piston that can move straight in the state of being in the state, and an eye drop container connected to the tubular body. The discharge port of the eye drop container is connected to the end side, and the piston mechanism retreats from the first position where the piston closes the chemical liquid discharge hole to the one end side to open the chemical liquid discharge hole. When moving to the position, the chemical solution filled in the eye drop container is sucked from the discharge port, and when the piston advances from the second position to the first position, the chemical solution is discharged from the chemical solution discharge hole. It is in the point that it is configured to do.

According to this configuration, in addition to the above-mentioned effects and effects, the eye drop device is a configuration in which the eye drop aid and the eye drop container are integrated, so that the user can easily use the chemical solution of the attached eye drop container. Can perform eye drop operation.

It is a perspective view of the eye drop aid. It is a vertically-divided disassembled perspective view of an eye drop aid. It is a vertical sectional view of the eye drop assisting tool. It is a top view of the eye drop aid. It is a cross-sectional view of the main part of an eye drop assisting tool. It is a front view of the eye drop aid. It is operation explanatory drawing of the eye drop assisting tool. It is a figure which shows the eye drop assisting tool which concerns on other embodiment.

Hereinafter, embodiments of the eye drop assisting tool of the present invention and an eye drop device including the eye drop assisting tool and the eye drop container will be described with reference to the drawings.

[First Embodiment]
The overall configuration of the eye drop device 1 of the first embodiment will be described. As shown in FIGS. 1 to 6, the eye drop device 1 includes an eye drop aid 10 and an eye drop container 50. Hereinafter, among the eye drop assisting tools 10, the side where the eye drop container 50 is located will be described as the upper side, and the opposite side thereof will be described as the lower side. The eye drop assisting tool 10 of FIG. 2 shows a state in which the housing 40 is vertically divided in the vertical direction and halved. In FIG. 2, one of the half-split portions of the main body portion 41 and the grip portion 42 is not shown.

The eye drop assisting tool 10 is an assisting tool of the eye drop container 50 for realizing appropriate eye drop instillation without turning the face upward. As shown in FIG. 2, the eye drop assisting tool 10 is configured by accommodating a hollow tubular body 11 and a piston mechanism 20 in a housing 40.

As shown in FIG. 3, the tubular body 11 is formed linearly in the longitudinal direction and is arranged vertically inside the housing 40. A piston 21 described later is inserted in the lower end side 17 (corresponding to one end side) of the tubular body 11. An adapter 12 to which the eye drop container 50 can be connected is integrally formed on the upper end side 18 (corresponding to the other end side) of the tubular body 11. As a result, the tubular body 11 is configured to be connectable to the discharge port 53 of the discharge portion 52 of the eye drop container 50 (see also FIG. 1).

The eye drop container 50 attached to the eye drop aid 10 will be described. As shown in FIG. 1, the eye drop container 50 includes a container main body 51, a discharge portion 52, and a container-side fitting portion 54. The container body 51 stores the chemical solution. The discharge portion 52 is a nozzle in which a discharge port 53 is formed at the tip thereof. The container-side fitting portion 54 is located between the container main body 51 and the discharge portion 52. The container-side fitting portion 54 is formed with a screw thread for attaching to the adapter 12 of the eye drop assisting tool 10.

As shown in FIGS. 2 and 3, the housing 40 includes a main body 41 that houses the tubular body 11 and the piston mechanism 20, and a grip 42 that is continuous with the main body 41. The main body portion 41 is formed so as to project downward from the grip portion 42. An opening 40a is formed on the front side of the main body portion 41 (the side opposite to the grip portion 42). The tubular body 11 has a chemical liquid discharge hole 13 at a position exposed from the opening 40a, which is a part of the side wall 11a. Air is contained inside the tubular body 11. The chemical solution in the eye drop container 50 is discharged from the tubular body 11 to the outside through the chemical solution discharge hole 13.

As shown in FIG. 3, the piston mechanism 20 includes a piston 21 and an operating unit 30 that operates the piston 21. The piston 21 can move straight along the axis of the tubular body 11 while being housed inside the tubular body 11. The operation unit 30 is composed of a rod 31 (an example of a support member) connected to a base end portion 22 (end portion on one end side) of the piston 21 and an operation member 33.

The base end portion 22 of the piston 21 is supported by the piston holding portion 34 having the recess 34a. One end of the rod 31 is connected to the piston holding portion 34, and the other end of the rod 31 is connected to the operating member 33. The rod 31 has a bent portion 32 in the middle portion in the longitudinal direction. In the rod 31, the first rod 35 below the bent portion 32 extends diagonally upward from the piston holding portion 34, and the second rod 36 above the bent portion 32 extends vertically from the first rod 35. ing. As described above, the rod 31 is formed so that one end side in the longitudinal direction is connected to the piston 21 and the rod 31 has a bent portion 32 in the middle portion in the longitudinal direction. In the example shown in FIG. 3, the rod 31 is formed in an abbreviated shape. The first rod 35 may be extended in a direction orthogonal to the axial center direction of the piston 21 instead of diagonally upward. That is, the rod 31 may be formed in a substantially L shape.

The operation member 33 is provided with a pressing surface that is exposed to the outside of the housing 40 and can be pressed. As shown in FIGS. 2 to 4, in the hollow housing 40, a first hole portion 44 and a second hole portion 45 are formed on the upper surface of the main body portion 41. An adapter 12 provided on the upper part of the tubular body 11 is fitted into the first hole portion 44. A bottomed tubular holding case 46 is inserted into the second hole 45 and fitted. The holding case 46 has a through hole 48 formed in the bottom portion 47, and the second rod 36 is inserted through the holding case 46. The urging member 37 is housed below the operating member 33 in the holding case 46. That is, a part of the second rod 36, the urging member 37, and the operating member 33 is housed in the holding case 46. The urging member 37 urges the rod 31 so that the piston 21 is held at the first position (upper position) close to the discharge port 53 of the eye drop container 50.

The piston 21 is formed in a columnar shape, and the tip portion 23 is formed in a hemispherical shape. A collar portion 24 having a sealing function is formed in the middle portion of the piston 21 in the longitudinal direction, and the collar portion 24 slides on the inner surface of the tubular body 11.

As shown in FIG. 3, the piston 21 has a first position (upper position) close to the discharge port 53 of the eye drop container 50 and a second position (position indicated by the alternate long and short dash line) retracted downward from the first position. Move between. The flange portion 24 is located above the chemical discharge hole 13 when the piston 21 is in the first position, and is located below the chemical liquid discharge hole 13 when the piston 21 is in the second position. When the collar portion 24 is located above the chemical discharge hole 13, the tubular body 11 is formed with a hollow portion 14 closed by the collar portion 24 and the eye drop container 50. As a result, the chemical discharge hole 13 communicates with the hollow portion 14 and is opened by retracting the piston 21 to the second position, and the chemical liquid discharge hole 13 communicates with the hollow portion 14 by advancing to the first position. Communication is cut off.

A connecting portion 15 is provided on the inner surface of the adapter 12. The connecting portion 15 is a portion for connecting to the eye drop container 50, and a screw groove corresponding to the thread of the container-side fitting portion 54 is formed. The eye drop container 50 is connected to the eye drop assisting tool 10 by screwing the connecting portion 15 and the container side fitting portion 54 (see also FIG. 1).

The packing member 16 is arranged between the connecting portion 15 and the eye drop container 50. The packing member 16 brings the adapter 12 and the eye drop container 50 into close contact with each other, and the airtightness of the hollow portion 14 of the tubular body 11 is suitably maintained.

As shown in FIGS. 3 to 6, the eye drop guide portion 38 is an eye drop positioning member that adjusts the posture of the eye drop assisting tool 10 at the time of instillation to an appropriate position. The eye drop guide portion 38 is formed in a cup shape. The eye drop guide portion 38 has a hole formed in a portion corresponding to the bottom of the cup, and the hole is configured to overlap the chemical discharge hole 13 in front view. When the user touches the face so that the end face of the instillation guide portion 38 is located around the eyes, the chemical liquid discharge hole 13 is in a position corresponding to the position of the eyes at the time of instillation.

Since the posture of the eye drop assisting tool 10 is appropriately determined by the eye drop guide portion 38, the position of the chemical liquid discharge hole 13 with respect to the user's eyes can be set to an appropriate position. Further, by adjusting the depth of the eye drop guide portion 38, the distance from the drug solution discharge hole 13 to the user's eye at the time of instillation can be made appropriate.

The adapter 12 is configured so that a cap (not shown) that covers the inside of the tubular body 11 can be attached when the eye drop container 50 is not attached. Thereby, when the eye drop assisting tool 10 is not used, the inside of the tubular body 11 can be protected by using the cap.

The main configuration of the eye drop device 1 is as described above. The user attaches the eye drop container 50 to the eye drop assisting tool 10 and performs eye drop. The connection between the eye drop container 50 and the eye drop aid 10 is performed by screwing the container-side fitting portion 54 of the eye drop container 50 and the adapter 12 on the side of the eye drop aid 10. The eye drop container 50 does not need to be attached / detached to the eye drop assisting tool 10 every time when instilling, and may be stored in a state of being attached to the eye drop assisting tool 10.

[Operation explanation]
With reference to FIG. 7, the eye drop operation performed by the eye drop assist tool 10 of the first embodiment will be described. In the eye drop assisting tool 10, the discharge port 53 of the eye drop container 50 is connected to the adapter 12.

FIG. 7A shows a state in which the piston 21 is in the first position close to the discharge port 53 of the eye drop container 50 in the tubular body 11. In the state (A) of FIG. 7, the piston 21 receives and holds the urging force of the urging member 37 (see also FIG. 3). When the operating member 33 is pressed downward from the state (A) of FIG. 7, the rod 31 moves downward against the urging member 37, and the piston 21 moves downward in conjunction with the downward movement of the rod 31. fall back. FIG. 7B shows a state in which the piston 21 is retreating from the first position to the second position. In the state (B) of FIG. 7, the hollow portion 14 of the tubular body 11 begins to have negative pressure. As a result, the chemical solution filled in the eye drop container 50 is sucked from the discharge port 53, and one to several drops, preferably one drop of the chemical solution L is discharged from the discharge port 53 into the hollow portion 14. It is preferable that the number of drops discharged in one operation is constant. The discharged chemical liquid L may be held by the flange portion 24 of the piston 21, or may be held beyond the upper portion of the piston 21 in addition to the flange portion 24 of the piston 21.

FIG. 7C shows a state in which the piston 21 is located at the second position. When the piston 21 moves to the second position, the flange portion 24 of the piston 21 is located below the chemical discharge hole 13. At this time, the chemical discharge hole 13 communicates with the hollow portion 14 and is opened. Since air is introduced into the hollow portion 14 of the tubular body 11 from the chemical discharge hole 13, the negative pressure state of the hollow portion 14 is eliminated. The chemical solution L may be maintained in a state of being held by the flange portion 24 of the piston 21, or may be maintained in a state of being held beyond the upper portion of the piston 21 in addition to the flange portion 24 of the piston 21. .. Note that FIG. 7C shows an example in which the chemical solution L is maintained in a state of being held by the flange portion 24 of the piston 21.

In the state (C) (second position) of FIG. 7, when the user releases the pushing operation of the operating member 33, the piston 21 returns to the initial position (first position) by the action of the urging member 37. As a result, the piston 21 returns from the second position to the first position. FIG. 7D shows a state in which the piston 21 is in the process of moving from the second position to the first position. In the state (D) of FIG. 7, the hollow portion 14 is gradually narrowed, and the chemical liquid L held in the flange portion 24 of the piston 21 is discharged from the chemical liquid discharge hole 13 opened to the outside. FIG. 7 (E) shows a state in which the piston 21 has returned to the first position. In the state (E) of FIG. 7, the chemical solution L is completely discharged from the chemical solution discharge hole 13.

The airtightness inside the hollow portion 14 is maintained by the flange portion 24 of the piston 21 and the packing member 16. Therefore, when the piston 21 moves from the second position to the first position, the air in the hollow portion 14 is compressed and the internal pressure rises. Due to this increase in internal pressure, substantially the entire amount of the chemical solution L held in the piston 21 is discharged from the chemical solution discharge hole 13. The chemical solution L is discharged in the direction in which the chemical solution discharge hole 13 faces against gravity, and reaches the user's eyes inside the eye drop guide portion 38. Since the chemical solution L is discharged from the chemical solution discharge hole 13 using the piston mechanism 20, the user can perform eye drops without turning his face upward. Further, since the piston 21 is configured to hold an appropriate amount for eye drops, the amount discharged from the chemical liquid discharge hole 13 is also an appropriate amount.

Next, replacement of the eye drop container 50 will be described. When the drug solution in the eye drop container 50 runs out or the period of use is exceeded, the eye drop device 1 can be made usable again by replacing the eye drop container 50. In the eye drop device 1 of the present embodiment, the eye drop container 50 can be separated from the eye drop aid 10 by releasing the screwing between the eye drop aid 10 and the eye drop container 50 (see FIG. 1).

Considering hygiene and the use of a plurality of eye drop containers 50, it is preferable to replace the tubular body 11 and the piston 21 with new ones when the eye drop containers 50 are replaced. In the present embodiment, the tubular body 11 and the piston 21 are disposal members that are discarded when the chemical solution is replaced. The separation between the tubular body 11 and the piston 21 and the housing 40 is performed by releasing the fitting between the housing 40 and the tubular body 11 and the piston 21. Along with the replacement of the eye drop container 50, the tubular body 11 and the piston 21 are replaced with new ones (see FIG. 2). As a result, the tubular body 11 and the piston 21, which are the parts that come into contact with the chemical solution, can be switched to new ones in an appropriate period, and it is possible to manage hygiene and use a plurality of eye drop containers 50. Become. Since the housing 40 does not come into direct contact with the chemical solution, it can be reused for a long period of time, and even when a plurality of eye drop containers 50 are used, the housing or the like can be used as it is.

Normally, the eye drop container 50, the tubular body 11, and the piston 21 are replaced at the same time. In the eye drop assisting tool 10 of the present embodiment, the connection between the tubular body 11 and the piston 21 and the housing 40 is configured as a snap-fit type. Therefore, the eye drop container 50 can be easily removed from the housing 40 while being attached to the tubular body 11, and the eye drop container 50 can be discarded while being integrated with the tubular body 11 and the piston 21. ..

According to the eye drop device 1 to which the eye drop assisting tool 10 of the first embodiment is applied, an appropriate amount of the chemical solution can be discharged from the chemical solution discharge hole 13 at an appropriate speed only by the operation of the piston 21. It is possible to realize an eye drop device 1 having a simple configuration that allows eye drops to be instilled with the face facing forward without adopting a complicated structure.

[Second Embodiment]
Next, the eye drop assisting tool of the second embodiment will be described. FIG. 8 is a side sectional view schematically showing the inside of the eye drop assisting tool 100 of the second embodiment. The same reference numerals may be given to the same configurations as those of the first embodiment, and the description thereof may be omitted.

As shown in FIG. 8, the eye drop assisting tool 100 of the second embodiment has a piston mechanism 60 different from that of the first embodiment. The piston mechanism 60 of the second embodiment includes an operating portion 61 on the side of the base end portion 22 of the piston 21. The operation unit 61 is composed of an operation member 63 connected to the base end portion 22 of the piston 21 and an urging member 62. The operating member 63 is a rod-shaped member coaxial with the piston 21. A flange 64 is provided as a stopper between the base end portion 22 and the operating member 63. A tubular piston holding portion 65 is externally fitted to the lower end side 17 of the tubular body 11.

The urging member 62 is arranged between the flange 64 and the housing 40 (main body 41), and urges the piston 21 so that the piston 21 is held in the first position. A packing member 66 is arranged on the inner peripheral side of the piston holding portion 65. By pulling the operating member 63 downward with a finger or the like, the piston 21 can be moved from the first position to the second position. After that, when the user releases the finger portion or the like from the operating member 63, the piston 21 moves from the second position to the first position by receiving the urging force of the urging member 62. By configuring such a piston mechanism 60, the eye drop assisting tool 100 has a simpler configuration.

FIG. 8 shows an example of an eye drop assisting tool 100 including a housing 40 for accommodating the tubular body 11. The eye drop assisting tool 100 may be configured without the housing 40. In this case, the upper portion of the operating member 63 and the urging member 62 are housed in the tubular body (not shown), and the urging member 62 is arranged between the flange 64 and the bottom portion of the tubular body. In such an eye drop assisting tool 100, the user operates the operating member 63 while holding the tubular body 11.

Although each embodiment of the eye drop assisting tools 10 and 100 and the eye drop device 1 of the present invention has been described above, the present invention is not limited to the above-described embodiment and can be changed as appropriate.

The configurations of the operation units 30 and 61 of the above embodiment can be changed as appropriate. For example, it is possible to change the configuration so that the piston 21 is moved by using a drive source such as a motor or a solenoid. In this way, the operation units 30 and 61 can be appropriately changed to other configurations.

In the above embodiment, the example in which the tubular body 11 is formed linearly in the longitudinal direction is shown, but the tubular body 11 may have a shape that bends in a region other than the region where the piston 21 moves, for example. Further, the tip shape of the piston 21 is not limited to a hemispherical shape, and may be any shape such as a triangular shape.

In the above embodiment, the eye drop assisting tool 10 is configured to include the eye drop guide portion 38, but the eye drop guide portion 38 may be omitted from the above embodiment. Further, the configuration of the housing 40 can be changed as appropriate. For example, the grip portion 42 can be omitted from the housing 40.

In the above embodiment, the eye drop container 50 and the eye drop aids 10 and 100 are an example of the eye drop device 1 having a separate configuration, but the present invention is not limited to this configuration. For example, the eye drop device 1 can be configured by integrally including the eye drop container 50 and the eye drop aids 10 and 100.

1: Eye drop device 10, 100: Eye drop aid 11: Cylindrical body 11a: Side wall 12: Adapter 13: Chemical solution discharge hole 14: Hollow part 17: Lower end side 18: Upper end side 20, 60: Piston mechanism 21: Piston 24 : Flange parts 30, 61: Operation part 31: Rod (support member)
33, 63: Operating member 34: Piston holding part 37, 62: Biasing member 38: Eye drop guide part 40: Housing 41: Main body part 42: Grip part 50: Eye drop container 51: Container main body 52: Discharge part 53: Discharge port

Claims (11)

A hollow tubular body that has a chemical discharge hole in a part of the side wall and contains air inside.
A piston mechanism having a piston that can move straight forward while being housed inside the tubular body is provided.
The tubular body is configured such that the piston is inserted on one end side and the discharge port of the eye drop container can be connected on the other end side.
When the piston moves backward from the first position for closing the chemical discharge hole to the second position for opening the chemical discharge hole, the piston mechanism is filled with the chemical liquid in the eye drop container. Is sucked from the discharge port, and when the piston advances from the second position to the first position, the eye drop assisting tool is configured to discharge the chemical solution from the chemical solution discharge hole. The eye drop assisting tool according to claim 1, wherein the tubular body is formed linearly in the longitudinal direction, and the piston is configured to be movable along the axis of the tubular body. A housing for accommodating the tubular body is provided.
The eye drop assist tool according to claim 1 or 2, wherein the piston mechanism has an operation unit for moving the piston between the first position and the second position. The eye drop assisting tool according to claim 3, wherein the operating portion is provided with a pressing surface exposed to the outside of the housing and which can be pressed. Claim 3 or 4 wherein the operating portion includes a support member connected to the one end side of the piston and an urging member for urging the piston to be held in the first position. Eye drop aids described in. The eye drop assisting tool according to claim 5, wherein the support member has one end side in the longitudinal direction connected to the piston and has a bent portion in the middle portion in the longitudinal direction. The eye drop assisting tool according to any one of claims 3 to 6, wherein the tubular body and the piston are detachably configured from the housing. The eye drop assisting tool according to any one of claims 1 to 7, wherein the eye drop container is detachably formed from the tubular body. The eye drop assisting tool according to any one of claims 1 to 8, which is arranged outside the tubular body and includes an eye drop guide portion that covers the periphery of the chemical discharge hole. A hollow tubular body that has a chemical discharge hole in a part of the side wall and contains air inside.
A piston mechanism having a piston that can move straight while being housed inside the tubular body,
A housing for accommodating the tubular body and
It is provided with an eye drop guide portion that is arranged outside the tubular body and covers the periphery of the chemical discharge hole.
The tubular body is configured such that the piston is inserted on one end side and the discharge port of the eye drop container can be connected on the other end side.
The tubular body is formed linearly in the longitudinal direction, and the piston is configured to be movable along the axis of the tubular body.
When the piston moves backward from the first position for closing the chemical discharge hole to the second position for opening the chemical discharge hole, the piston mechanism is filled with the chemical liquid in the eye drop container. Is sucked from the discharge port, and when the piston advances from the second position to the first position, the chemical liquid is discharged from the chemical liquid discharge hole.
The piston mechanism has an operating unit that moves the piston between the first position and the second position.
The operating portion includes a support member connected to the one end side of the piston and an urging member for urging the piston to be held in the first position.
An eye drop aid in which the eye drop container is detachably attached to the tubular body. A hollow tubular body that has a chemical discharge hole in a part of the side wall and contains air inside.
A piston mechanism having a piston that can move straight while being housed inside the tubular body,
An eye drop container connected to the tubular body is provided.
The piston is inserted into the tubular body on one end side, and the discharge port of the eye drop container is connected to the other end side.
When the piston moves backward from the first position for closing the chemical discharge hole to the second position for opening the chemical discharge hole, the piston mechanism is filled with the chemical liquid in the eye drop container. Is sucked from the discharge port, and when the piston advances from the second position to the first position, the eye drop device is configured to discharge the chemical solution from the chemical solution discharge hole.

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