WO2022030301A1 - Unité d'entraînement pour l'éjection de liquide, et dispositif d'éjection de liquide - Google Patents

Unité d'entraînement pour l'éjection de liquide, et dispositif d'éjection de liquide Download PDF

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Publication number
WO2022030301A1
WO2022030301A1 PCT/JP2021/027729 JP2021027729W WO2022030301A1 WO 2022030301 A1 WO2022030301 A1 WO 2022030301A1 JP 2021027729 W JP2021027729 W JP 2021027729W WO 2022030301 A1 WO2022030301 A1 WO 2022030301A1
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WO
WIPO (PCT)
Prior art keywords
unit
liquid injection
pump bottle
pusher
drive unit
Prior art date
Application number
PCT/JP2021/027729
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English (en)
Japanese (ja)
Inventor
博 山田
恭平 ▲高▼橋
靖 岡田
裕二 小川
Original Assignee
参天製薬株式会社
株式会社アイカムス・ラボ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 参天製薬株式会社, 株式会社アイカムス・ラボ filed Critical 参天製薬株式会社
Priority to JP2022541454A priority Critical patent/JPWO2022030301A1/ja
Publication of WO2022030301A1 publication Critical patent/WO2022030301A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes

Definitions

  • the present invention relates to a liquid injection drive unit and a liquid injection device, and more particularly to a liquid injection drive unit and a liquid injection device suitable for injecting medicated liquids such as eye drops, nasal drops, and throat medicines. be.
  • a device using a piezoelectric micropump is provided. That is, when the operation switch provided on the main body of the apparatus is operated, the piezoelectric micropump is operated so that the liquid stored in the container inside the main body of the apparatus is ejected to the outside.
  • the injection amount of the liquid does not depend on the operation force of the operator, it is possible to inject a necessary and sufficient amount of liquid even when operated by a user having a small operation force, for example. It is possible (see, for example, Patent Document 1).
  • the present invention provides a liquid injection drive unit capable of injecting a certain amount of liquid more easily and economically by the user without complicating the manufacturing work and the liquid replenishment work. It is an object of the present invention to provide a liquid injection device.
  • the liquid injection drive unit has a discharge port, a storage unit, and a support base, and when the storage unit moves from a normal position to an operation position with respect to the support base.
  • a liquid injection drive unit for operating a pump bottle that discharges the liquid stored in the storage unit from the discharge port, and the pump bottle can be arranged with the discharge port exposed to the outside.
  • the storage unit in the above-mentioned liquid injection drive unit, in the injection operation in which the storage unit moves from the normal position to the operation position, the storage unit moves from the operation position.
  • the pusher is configured to move faster than the return operation of moving toward the normal position.
  • the present invention is characterized in that, in the above-mentioned liquid injection drive unit, the drive mechanism unit is in a start standby state of the actuator with the storage unit arranged in the normal position.
  • the drive mechanism unit includes an urging member and a cam mechanism interposed between the unit body and the pusher, and the urging member is the unit body.
  • the pusher is urged so that the storage portion of the pump bottle arranged in the above moves from the normal position toward the operation position
  • the cam mechanism includes a driving member rotated by the actuator and a driving member. It has a driven member that slides along the urging direction of the urging member with the rotation of the driving member, and between the driving member and the driven member, the driven member with respect to the rotation amount of the driving member. It is characterized in that a progressive cam portion having a small ratio of the slide amount of the driven member and a rapid cam portion having a large ratio of the slide amount of the driven member to the rotation amount of the driving member are provided.
  • the present invention is characterized in that, in the above-mentioned liquid injection drive unit, the urging member is a coil-shaped spring provided so as to surround the periphery of the pump bottle arranged in the unit body. And.
  • the driving member and the driven member each have a cylindrical shape, and the gradual cam portion and the rapid cam portion alternate along the peripheral surface of the cylinder.
  • the driving member is provided so as to circulate so as to be
  • the pusher in the above-mentioned liquid injection drive unit, is provided between a position facing the pump bottle arranged in the unit body and a retracting position not facing the pump bottle. It is provided so as to be movable, and when the pusher is arranged at the retracted position, the pump bottle can be accommodated in the unit main body.
  • the unit body is provided with an injection opening for exposing the discharge port of the pump bottle to the outside, and the injection opening is provided on the outer surface of the unit body. It is characterized in that a protruding portion is provided in a portion surrounding the.
  • the unit body is provided with a light projecting member around the injection opening and closer to the injection opening than the protrusion. It is characterized by that.
  • liquid injection device is characterized in that a pump bottle is arranged in the unit main body of the above-mentioned liquid injection drive unit.
  • the present invention is characterized in that, in the above-mentioned liquid injection device, a liquid eye drop is stored in the storage portion of the pump bottle.
  • the application target is a pump bottle in which a liquid is discharged from a discharge port by pressing a storage portion independently of the drive unit for liquid injection
  • connection work is required for the liquid supply system.
  • replenishing the liquid it is only necessary to replace the entire pump bottle, so that the work can be facilitated.
  • FIG. 1 is a cross-sectional view of a liquid injection device according to an embodiment of the present invention in which a storage portion of a pump bottle is arranged at a normal position.
  • FIG. 2 is a cross-sectional view of the liquid injection device shown in FIG. 1 in a state where the storage portion of the pump bottle is arranged at the operation position.
  • FIG. 3 is an exploded perspective view of the liquid injection device shown in FIG. 1 in a state where the pusher is arranged at the retracted position and the pump bottle is arranged outside the unit main body.
  • FIG. 4 is a diagram conceptually showing an example of use when instilling eye drops by applying the liquid injection device shown in FIG. 1.
  • 5A and 5B show a pump bottle of the liquid injection device shown in FIG. 1, in which FIG.
  • FIG. 5A is a perspective view of a state in which a storage unit is arranged in a normal position
  • FIG. 5B is a perspective view in which the storage unit is arranged in an operation position.
  • FIG. 6A and 6B show a reference example of the operation of the pump bottle.
  • FIG. 6A is a schematic cross-sectional view in a state where the reservoir is arranged in the normal position
  • FIG. 6B is a sectional view in a state where the reservoir is arranged in the operation position.
  • FIG. 7 is a partial perspective view showing a main part of the liquid injection device shown in FIG.
  • FIG. 8 is a perspective view showing the internal structure of the liquid injection device shown in FIG.
  • FIG. 9A and 9B show the operation of the drive mechanism unit applied to the liquid injection device shown in FIG. 1, in which FIG. 9A is a perspective view of a main part in a state where the driving member and the driven member are most separated from each other, and FIG. 9B is a perspective view.
  • FIG. 9A is a perspective view of a main part in a state where the driving member is rotated from the state (a)
  • (c) is a state in which the driven member slides in a direction close to the driving member due to the urging force of the urging member (injection of the drive mechanism unit).
  • (Operation) is a perspective view of the main part
  • (d) is a state (drive mechanism) in which the driven member slides in a direction away from the driving member against the urging force of the urging member due to the operation of the cam mechanism accompanying the rotation of the driving member. It is a perspective view of the main part of the part return operation).
  • the liquid injection device 1 exemplified here targets a liquid eye drop (liquid) as an injection target, and includes a pump bottle 10 and a liquid injection drive unit 100.
  • the pump bottle 10 has a storage portion 11 in which eye drops are stored and a support base portion 12 arranged so as to be relatively movable with respect to the storage portion 11, and the support base portion 12 has a support base portion 12.
  • the eye drops of the storage unit 11 are configured to be ejected from the discharge port 13.
  • a resin pump bottle 10 having a substantially columnar outer shape and having a discharge port 13 at the tip of the support base 12 is applied.
  • an existing one may be appropriately applied as the pump bottle 10 for injecting the eye drops from the discharge port 13 by the pressing operation of the storage portion 11.
  • a return spring 14 is provided between the storage portion 11 and the support base portion 12. As shown in FIG. 6A, the return spring 14 holds the storage portion 11 in the most extended normal position with respect to the support base portion 12 when no pressing operation force is applied to the support base portion 12. ..
  • An injection spare chamber 15 is provided inside the storage unit 11.
  • the injection reserve chamber 15 communicates with the inside of the storage unit 11 via the water suction port 15a, and the water suction port 15a is provided with a first check valve 15b.
  • the first check valve 15b only allows the passage of fluid from the storage unit 11 to the injection reserve chamber 15.
  • the support base 12 is provided with a discharge pipe line 16.
  • the discharge pipe line 16 opens to the outside through the discharge port 13 described above and also opens to the inside of the injection spare chamber 15 through the suction port 16a, and has a second check valve 16b inside. ..
  • the second check valve 16b only allows the passage of fluid from the injection reserve chamber 15 to the discharge port 13.
  • the discharge pipe line 16 is provided with a piston 17 so as to be in sliding contact with the inner peripheral surface of the injection spare chamber 15.
  • the storage unit 11 when the pressing operation force applied to the storage unit 11 is removed, the storage unit 11 returns to the normal position by the return spring 14, and the pressure of the compression chamber unit 15c drops accordingly, so that the first check valve 15b Is in the open state, while the second check valve 16b is in the closed state. As a result, the eye drops in the reservoir 11 are sucked into the compression chamber 15c through the suction port 16a. After that, if the storage unit 11 is pressed and moved to a predetermined operation position, a certain amount of eye drops stored in the compression chamber unit 15c will be discharged to the outside through the discharge port 13. In the configuration example shown in FIG.
  • an inclined surface 12a is provided at the tip of the support base portion 12, and the discharge port 13 of the discharge pipe line 16 ejects the eye drops in a direction orthogonal to the inclined surface 12a.
  • a nozzle 18 is attached to the discharge port 13.
  • the liquid injection drive unit 100 to which the above-mentioned pump bottle 10 is applied includes a unit body 20 having a substantially cylindrical shape with a diameter larger than that of the pump bottle 10.
  • the unit main body 20 has an outer diameter that allows it to be gripped with one hand, and has an accommodating hole 21.
  • the accommodating hole 21 is a substantially columnar space for accommodating the pump bottle 10, and is opened at one end of the unit main body 20 while the other end is covered with the contact wall 22.
  • the accommodating hole 21 is provided at a position deviated from the axis of the unit body 20 so as to be substantially parallel to the axis of the unit body 20.
  • the side where the accommodating hole 21 is provided with respect to the axis of the unit main body 20 is referred to as a front surface, and the opposite side thereof is referred to as a back surface to specify the direction.
  • the accommodation hole 21 has an inner diameter that allows the support base 12 of the pump bottle 10 to be accommodated without rattling and the storage portion 11 and the support base 12 to move relative to each other.
  • the length of the accommodating hole 21 along the axial direction is when the tip end portion of the support base portion 12 is brought into contact with the contact wall 22 in a state where the storage portion 11 is arranged in the normal position with respect to the support base portion 12.
  • a part of the storage unit 11 is configured to be exposed to the outside.
  • the dimension of the storage unit 11 protruding from the accommodating hole 21 is set to be larger than the operation stroke amount of the storage unit 11, that is, the moving distance from the normal position to the operation position.
  • an inclined wall portion 22a is provided on the portion of the unit body 20 on the front side of the contact wall 22.
  • the inclined wall portion 22a is inclined so as to gradually become one end side from the back surface side to the front side, and matches the inclined surface 12a of the support base portion 12 when the pump bottle 10 is accommodated in the accommodating hole 21. It is formed so that it can be used.
  • the inclined wall portion 22a is provided with an injection opening 22b at a portion of the discharge port 13 corresponding to the nozzle 18.
  • the injection opening 22b is an opening for exposing the discharge port 13 to the outside through the nozzle 18.
  • a cover peripheral wall portion (projecting portion) 22c and an LED (light projecting member) 23 are provided in a portion around the inclined wall portion 22a.
  • the cover peripheral wall portion 22c is an endless annular protrusion provided on the outer surface of the unit main body 20 around the injection opening 22b, and covers the periphery of the eyes when the injection opening 22b faces the pupil. It is formed to a size that can be used.
  • the LED 23 irradiates the outside of the unit main body 20 with light, and is arranged in a portion between the cover peripheral wall portion 22c and the front side of the injection opening 22b.
  • a cylindrical main driving member 31 and a driven member 32 are provided on the outer peripheral portion of the peripheral wall 24 constituting the accommodating hole 21 in the unit main body 20, and are attached between the driven member 32 and the unit main body 20.
  • a force spring (biasing member) 33 is provided.
  • the driving member 31 is arranged so as to be prevented from moving along the axial direction of the accommodating hole 21 on one end side of the unit main body 20 and to be rotatable around the axial center of the accommodating hole 21.
  • teeth 31a meshing with the drive gear 41 are provided on the outer peripheral surface of the driving member 31.
  • the drive gear 41 rotates via the reduction mechanism 42 when the electric motor (actuator) 40 arranged in the unit main body 20 is driven, and rotates the driving member 31 with respect to the unit main body 20.
  • Reference numeral 43 in FIG. 1 is an operation switch for lighting the LED 23 and driving the electric motor 40, and is provided on the rear end side of the other end surface of the unit main body 20.
  • the LED 23 when the operation switch 43 is pressed, the LED 23 is turned on for a predetermined time (for example, 1 second), and then the electric motor 40 is driven.
  • a battery that serves as a power source for the LED 23 and the electric motor 40 is arranged in a portion of the unit main body 20 that is on the back side of the accommodating hole 21.
  • the driven member 32 is arranged on the other end side of the unit main body 20 with respect to the driving member 31, so that the rotation around the axis of the accommodating hole 21 is prevented and the driven member 32 moves along the axis of the accommodating hole 21. It is possible.
  • the driven member 32 is provided with a connecting rod 34 on a portion on the back surface side of the accommodating hole 21.
  • the connecting rod 34 is a columnar member extending from the outer peripheral portion of the driven member 32 to the other end side along the axial center of the accommodating hole 21, and is movably arranged in the guide hole 25 provided in the unit main body 20. It has been done.
  • the connecting rod 34 is provided with a pusher 35 on an end surface exposed from the guide hole 25.
  • the pusher 35 projects radially from the connecting rod 34, is movable along the axial center of the accommodating hole 21 together with the driven member 32 via the connecting rod 34, and rotates around the axial center of the connecting rod 34. Is possible.
  • the driven member 32 is arranged at the position farthest from the driving member 31
  • the pusher 35 is arranged at a position protruding from the storage portion 11 of the pump bottle 10 accommodated in the accommodating hole 21 and is arranged at the support base portion 12.
  • the storage unit 11 is arranged in the normal position, it can be arranged at the position facing the end face of the storage unit 11.
  • the pusher 35 is rotated around the axis of the connecting rod 34 from this state, as shown in FIG. 3, the pusher 35 is arranged at a retracted position so as not to face the end face of the storage portion 11, and the accommodation hole of the unit main body 20 is accommodated.
  • the pump bottle 10 can be attached to and detached from the 21.
  • the main driving member 31 and the driven member 32 are provided with cam surfaces 51 and 52 at portions facing each other.
  • the cam surfaces 51 and 52 move the driven member 32 with respect to the driven member 31 along the axis of the accommodating hole 21 when the driven member 31 rotates.
  • the driving member 31 is provided with the driving cam surface 51
  • the driven member 32 is provided with the driven cam surface 52.
  • the driving cam surface 51 includes a gradual cam portion 51a, a standby contact cam portion 51b, a radical cam portion 51c, and a communication cam portion 51d.
  • the gradual cam portion 51a extends spirally along the circumferential direction of the main driving member 31 so as to be close to the gradual driven member 32.
  • the standby contact cam portion 51b extends so as to be substantially orthogonal to the axis of the accommodating hole 21, and is provided so as to be continuous with the portion of the gradual cam portion 51a closest to the driven member 32. ..
  • the rapid advance cam portion 51c extends substantially linearly along the axis of the accommodating hole 21, and is continuously provided on the standby contact cam portion 51b.
  • the communication cam portion 51d is continuous from the radical cam portion 51c to the portion of the progressive cam portion 51a that is most distant from the driven member 32, and extends so as to be substantially orthogonal to the axis of the accommodating hole 21. It exists.
  • the length of the contact cam portion 51d along the circumferential direction is substantially the same as that of the standby contact cam portion 51b.
  • the distance between the contact cam portion 51d and the standby contact cam portion 51b is configured to substantially coincide with the operation stroke amount of the storage portion 11 in the pump bottle 10.
  • the two standby contact cam portions 51b are provided so as to be offset from each other by 180 ° with respect to the axis of the accommodating hole 21, and when the driving member 31 rotates in a preset forward direction, Standby contact cam section 51b ⁇ Rapid cam section 51c ⁇ Contact cam section 51d ⁇ Progressive cam section 51a ⁇ Standby contact cam section 51b ⁇ Rapid advance cam section 51c ⁇ Contact cam section 51d ⁇ Progressive cam section 51a
  • the main cam surface 51 is configured to make a round.
  • the driven cam surface 52 of the driven member 32 has a standby contact portion 52a and a spiral sliding contact portion 52b.
  • the standby contact portion 52a extends so as to be substantially orthogonal to the axis of the accommodating hole 21, so that the length in the circumferential direction is substantially the same as the standby contact cam portion 51b of the driving cam surface 51. It is configured in.
  • the spiral sliding contact portion 52b extends spirally so as to abut on the gradual cam portion 51a when the standby contact portion 52a is brought into contact with the connecting cam portion 51d of the driving cam surface 51.
  • the urging spring 33 is a coil-shaped spring interposed between the driven member 32 and the unit main body 20 on the other end side of the driven member 32, and the driven member 32 is always the main driving member 31 with respect to the unit main body 20. It is pressed in a direction close to.
  • the urging spring 33 is set to have a spring force (urging force) larger than the spring force of the return spring 14 of the pump bottle 10.
  • the urging spring 33 is provided so as to surround the outer peripheral portion of the accommodating hole 21 in the unit main body 20.
  • a photo sensor 60 is provided on the outer periphery of the driving member 31 in the unit main body 20.
  • the photo sensor 60 detects the rotational position of the driving member 31 with respect to the unit main body 20 via the detection piece 31b provided on the outer peripheral surface of the driving member 31.
  • the photo sensor 60 is provided so that the detection piece 31b can be detected when the standby contact cam portion 51b of the driving member 31 comes into contact with the standby contact portion 52a of the driven member 32. .. That is, the driving member 31 has detection pieces 31b at two locations on the outer peripheral surface, and when these detection pieces 31b are detected by the photosensor 60, the standby contact cam portion 51b is the standby contact portion of the driven member 32. It is in a state of being in contact with 52a.
  • the photo sensor 60 operates only until the photo sensor 60 detects the next detection piece 31b, and the driving member 31 is moved forward by 180 at a constant speed. ° It is configured to rotate.
  • the standby contact cam portion 51b of the main driving member 31 contacts the standby contact portion 52a of the driven member 32.
  • This state is the start standby state of the electric motor 40.
  • the driven member 32 is arranged at the position farthest from the main driving member 31 against the spring force of the urging spring 33.
  • the pusher 35 connected to the driven member 32 via the connecting rod 34 is also in the state of being farthest from the driving member 31.
  • the storage portion 11 is arranged in the normal position with respect to the support base portion 12.
  • the pusher 35 can be arranged at a position facing the end surface of the storage portion 11 with respect to the pump bottle 10 of the above.
  • the pump bottle 10 is simply performed. It is sufficient to accommodate the liquid in the unit main body 20 of the liquid injection drive unit 100, and there is no possibility that the work will be complicated.
  • the unit body 20 is held with one hand in a posture in which the front is facing upward, and the injection opening 22b is formed.
  • the unit body 20 may be brought close to the face and the operation switch 43 may be pressed while facing the pupil.
  • the LED 23 is first lit by pressing the operation switch 43. Therefore, by using the LED 23 as a guide, the position of the pupil is accurately defined with respect to the injection opening 22b. You will be able to.
  • the cover peripheral wall portion 22c is provided around the injection opening 22b, the posture of the liquid injection device 1 and the position of the injection opening 22b can be obtained by bringing the cover peripheral wall portion 22c into contact with the periphery of the eyes. Not only is stable, but the mutual distance between the pupil and the injection opening 22b can always be constant.
  • the electric motor 40 is driven and the photo sensor 60 detects the next detection piece 31b.
  • the driving member 31 will rotate by about 180 ° only until.
  • the driving cam surface 51 sequentially changes with respect to the standby contact portion 52a of the driven member 32, and as shown in FIG. 9B, passes through the radical cam portion 51c and the connecting cam portion. It will be in a state facing 51d.
  • the driven member 32 momentarily slides toward the driving member 31 due to the spring force of the urging spring 33, and the pressing operation force is applied to the storage portion 11 of the pump bottle 10 via the pusher 35 to return.
  • the storage unit 11 moves to the operating position against the spring force of the spring 14. Therefore, a predetermined amount of eye drops is ejected from the discharge port 13 of the pump bottle 10 through the nozzle 18, and the eye drops are ejected to the user's eye from the injection opening 22b of the unit main body 20.
  • the progressive cam portion 51a of the driving member 31 is in sliding contact with the spiral sliding contact portion 52b of the driven member 32 to urge the driving member 31.
  • the driven member 32 slides in a direction away from the driving member 31 against the spring force of the spring 33, and when the photosensor 60 detects the detection piece 31b, the electric motor 40 enters the start standby state, and the driving member 31 The rotation stops.
  • the standby contact cam portion 51b of the main driving member 31 is in contact with the standby contact portion 52a of the driven member 32, and the above-mentioned start standby state is restored.
  • the storage portion 11 is returned to the normal position by the return spring 14.
  • the operation switch 43 is pressed, the above operation is repeated, and the eye drops are ejected from the discharge port 13 of the pump bottle 10 each time.
  • the injection amount of the eye drops does not depend on the operating force, for example, even when the user with a small operating force operates the eye drops, a necessary and sufficient amount of the eye drops is injected. It becomes possible.
  • the spray is not necessarily limited to the spraying of eye drops, and may be sprayed with a medicinal liquid such as a nasal spray or a throat medicine.
  • a medicinal liquid such as a nasal spray or a throat medicine.
  • the connection work of the supply system is unnecessary, it is not necessary to perform the sterility work, and it is suitable as a device for injecting a medicinal liquid, but it is also applicable to a device for injecting a non-medicinal liquid. It is possible to do.
  • a pump bottle configured to inject a liquid by pressing the storage portion
  • the liquid is injected by operating the storage portion. If possible, it is not limited to pressing. Since the pump bottle provided at the support base is applied to the liquid discharge port, there is no possibility that the position of the discharge port will be affected when the liquid is sprayed, and the liquid should be sprayed in a more accurate direction.
  • the present invention is not limited to this. Further, the injection direction of the liquid does not have to be oblique to the operation direction of the reservoir. Further, the pump bottle does not necessarily have to be removable from the unit body.
  • an electric motor that is rotationally driven is applied as an actuator, but the present invention is not limited to this, and a drive mechanism unit is applied so as to move a storage portion of a pump bottle by applying a linearly moving actuator. It is also possible to configure. Further, since the urging spring, which is a coil-shaped spring, is applied as the urging member and the pump bottle is arranged inside the urging spring, it is possible to reduce the size of the liquid injection device 1. be. However, as the urging member, if the pump bottle can be urged, it is not always necessary to apply a coiled urging spring.
  • the gradual cam unit is applied when the return operation is performed, so that the electric motor has a relatively small torque and is relatively small. It is possible to shift the urging spring to a bent state even if a thing is applied, but it is not always necessary to apply a cam mechanism portion having a gradual cam portion.
  • the actuator since the actuator is in the start standby state with the storage unit placed in the normal position, it is possible to immediately inject the liquid by driving the actuator, but the actuator is placed in the operating position. May be in the startup standby state.
  • an endless annular protrusion is exemplified, but it is not always necessary to apply the endless annular protrusion, and for example, a plurality of protrusions so as to surround the injection opening. It is possible to achieve the same effect even if the above is provided.
  • a light projecting member is provided around the injection opening in a portion closer to the injection opening than the protruding portion, and the light is turned on when the operation switch is pressed. Therefore, it is possible to accurately define the position of the pupil with respect to the injection opening, but the light projecting member does not necessarily have to be an LED, and the light projecting member does not necessarily have to be provided.
  • Liquid injection device 10 Pump bottle 11 Storage part 12 Support base 13 Discharge port 20 Unit body 22b Injection opening 22c Cover peripheral wall part (protruding part) 23 LED (light projecting member) 31 Main driving member 32 Driven member 33 Biasing spring (Bending member) 35 Pusher 40 Electric motor 51a Progressive cam section 51c Rapid drive cam section 100 Liquid injection drive unit

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

Selon l'invention, une unité d'entraînement (100) destinée à l'éjection de liquide permet à un utilisateur d'éjecter une quantité fixe de liquide facilement et économiquement sans compliquer les tâches de fabrication et les tâches de réapprovisionnement en liquide, et est destinée à actionner un flacon pompe (10) comportant un orifice d'évacuation (13), une partie de stockage (11), et une base support (12), le flacon pompe étant conçu de sorte que lorsque la partie de stockage (11) se déplace, par rapport à la base support (12), d'une position d'état normal à une position de fonctionnement, le liquide stocké dans la partie de stockage (11) soit éjecté par l'orifice d'évacuation (13). Ladite unité d'entraînement destinée à l'éjection de liquide comprend : un corps d'unité (20) qui permet l'installation du flacon pompe (10), l'orifice d'évacuation (13) étant visible sur l'extérieur ; un poussoir (35) qui est disposé sur le corps d'unité (20) de sorte que le poussoir puisse faire face au flacon pompe (10) installé sur le corps d'unité (20) et puisse se déplacer le long de la direction de déplacement de la partie de stockage (11) ; et un élément d'entraînement principal (31), un élément mené (32), et un ressort de sollicitation (33) qui sont destinés à déplacer, par rapport au corps d'unité (20), le poussoir (35) entre la position d'état normal et la position de fonctionnement, un tel mouvement étant entraîné par un moteur électrique (40).
PCT/JP2021/027729 2020-08-04 2021-07-27 Unité d'entraînement pour l'éjection de liquide, et dispositif d'éjection de liquide WO2022030301A1 (fr)

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JP2020-132194 2020-08-04
JP2020132194 2020-08-04

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Citations (7)

* Cited by examiner, † Cited by third party
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JP2004528150A (ja) * 2001-06-11 2004-09-16 グラクソ　グループ　リミテッド 薬剤ディスペンサ
JP2006517431A (ja) * 2003-02-11 2006-07-27 ベスパック パブリック リミテッド カンパニー 投与装置
JP2011050535A (ja) * 2009-09-01 2011-03-17 Minoru Nakamura 殺菌装置
US20150100024A1 (en) * 2013-10-03 2015-04-09 Jeff Baker Medicament delivery and training cartridge system and mechanisms of actuation
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