Abstract: A drug solution administration device includes: an injection unit configured to inject a drug solution in vivo; a container; a push-out mechanism configured to allow the drug solution stored inside the container to flow into the injection unit; a sealing member attached to the push-out mechanism and pressed against a wall surface of the containing space; a drive mechanism configured to generate a drive force for moving the push-out mechanism back and forth; and a control unit is configured such that, when a predetermined time has passed after the control unit controls the drive mechanism to stop operation of the drive mechanism, the control unit controls the drive mechanism to move the push-out mechanism and to shift a position of the sealing member relative to the wall surface of the containing space.

Abstract: A device includes: a first member comprising a first-member-side power transmission part; and a second member comprising a second-member-side power transmission part configured to be attachable to and detachable from the first member, the second member being a part of a medicinal-liquid administering device. The first-member-side power transmission part and the second-member-side power transmission part are configured to be engaged with each other for administering a medicinal liquid into a living body. The second member is configured to open a housing covering the first-member-side power transmission part to engage the second-member-side power transmission part with the first-member-side power transmission part at a time of attaching the first member to the second member.

Abstract: A medicinal device includes a first member; and a second member configured to be attachable to and detachable from the first member, the second member being a part of a medicinal-liquid administering device and including: a first member comprising a first-member-side power transmission part, and a second member comprising a second-member-side power transmission part; wherein the first-member-side power transmission part and the second-member-side power transmission part are configured to be engaged with each other for administering medicinal liquid into a living body; and wherein the second member is configured to open a housing covering the first-member-side power transmission part to engage the second-member-side power transmission part with the first-member-side power transmission part at a time of attaching the first member to the second member.

Abstract: A medicinal device includes a first member; and a second member configured to be attachable to and detachable from the first member, the second member being a part of a medicinal-liquid administering device and including: a first member comprising a first-member-side power transmission part, and a second member comprising a second-member-side power transmission part; wherein the first-member-side power transmission part and the second-member-side power transmission part are configured to be engaged with each other for administering medicinal liquid into a living body; and wherein the second member is configured to open a housing covering the first-member-side power transmission part to engage the second-member-side power transmission part with the first-member-side power transmission part at a time of attaching the first member to the second member.

Abstract: A liquid medicine administration apparatus includes: a drive section; an operation section configured to operate a pusher member that is slidably located in a liquid medicine container; a transmission mechanism configured to transmit a driving force of the drive section to the operation section; an occlusion detection mechanism located in the transmission mechanism and configured to detect occlusion of a passage of liquid medicine administered from the liquid medicine container; a rotation detector configured to detect rotation of the drive section; and a notification section configured to notify a user when the rotation detector detects stoppage of rotation of the drive section.

Abstract: A drug solution filling unit includes: a drug solution reservoir instrument comprising: a drug solution reservoir portion configured to store a drug solution, an exterior case that accommodates the drug solution reservoir portion, a first port portion provided in the drug solution reservoir portion, and a first seal member disposed in the first port portion; a filling adapter detachably mounted to the drug solution reservoir instrument, the filling adapter comprising: a first needle tube configured to be connected to a drug solution container containing the drug solution and to pierce the first seal member, and an adapter main body portion to which the first needle tube is attached; and a lock mechanism configured to restrict relative movement of the filling adapter with respect to the drug solution reservoir instrument.

Abstract: A drug solution administration device includes: an injection unit configured to inject a drug solution in vivo; a container; a push-out mechanism configured to allow the drug solution stored inside the container to flow into the injection unit; a sealing member attached to the push-out mechanism and pressed against a wall surface of the containing space; a drive mechanism configured to generate a drive force for moving the push-out mechanism back and forth; and a control unit is configured such that, when a predetermined time has passed after the control unit controls the drive mechanism to stop operation of the drive mechanism, the control unit controls the drive mechanism to move the push-out mechanism and to shift a position of the sealing member relative to the wall surface of the containing space.

Abstract: A puncture device includes a housing unit including an attachment surface configured to be attached to a body surface of a user; a puncture needle including an outer needle and an inner catheter located in the outer needle, the puncture needle being configured to be projected from the attachment surface to be punctured into a body of the user; a puncture mechanism configured to project the puncture needle from the attachment surface to be punctured into the body of the user, and pull back only the outer needle of the puncture needle into the housing unit with the inner catheter of the puncture needle indwelled in the body; and a puncture angle adjustment mechanism configured to adjust a puncture angle of the puncture needle, which is an angle of the puncture needle with respect to the attachment surface.

Abstract: A liquid medicine administration apparatus includes: a drive section; an operation section configured to operate a pusher member that is slidably located in a liquid medicine container; a transmission mechanism configured to transmit a driving force of the drive section to the operation section; an occlusion detection mechanism located in the transmission mechanism and configured to detect occlusion of a passage of liquid medicine administered from the liquid medicine container; a rotation detector configured to detect rotation of the drive section; and a notification section configured to notify a user when the rotation detector detects stoppage of rotation of the drive section.

Abstract: A medicinal device includes a first member; and a second member configured to be attachable to and detachable from the first member, the second member being a part of a medicinal-liquid administering device and including: a first member comprising a first-member-side power transmission part, and a second member comprising a second-member-side power transmission part; wherein the first-member-side power transmission part and the second-member-side power transmission part are configured to be engaged with each other for administering medicinal liquid into a living body; and wherein the second member is configured to open a housing covering the first-member-side power transmission part to engage the second-member-side power transmission part with the first-member-side power transmission part at a time of attaching the first member to the second member.

Abstract: A puncture device includes a puncture needle including an outer needle and an inner tube located in the outer needle; a housing unit accommodating the puncture needle; and a puncture mechanism within the housing unit. The puncture mechanism includes a push-in unit configured to be pushed in with respect to the housing unit, an outer needle slide unit attached to the outer needle, a stopper, an elastic member, a first end of which is fixed to the housing unit and a second end of which is fixed to the outer needle slide unit, and a fixation release unit configured to release the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube.

Abstract: A puncture device includes a housing unit including an attachment surface configured to be attached to a body surface of a user; a puncture needle including an outer needle and an inner catheter located in the outer needle, the puncture needle being configured to be projected from the attachment surface to be punctured into a body of the user; a puncture mechanism configured to project the puncture needle from the attachment surface to be punctured into the body of the user, and pull back only the outer needle of the puncture needle into the housing unit with the inner catheter of the puncture needle indwelled in the body; and a puncture angle adjustment mechanism configured to adjust a puncture angle of the puncture needle, which is an angle of the puncture needle with respect to the attachment surface.

Abstract: A puncture device includes a puncture needle having a double structure including an outer needle and an inner tube located in the outer needle; a housing unit accommodating the puncture needle; and a puncture mechanism provided within the housing unit. The puncture mechanism includes a push-in unit configured to be pushed in with respect to the housing unit, an outer needle slide unit attached to the outer needle and configured to slide within the housing unit, a stopper providing releasable fixation between the push-in unit and the outer needle slide unit and releasable fixation between the inner tube inserted into the outer needle and the outer needle slide unit, an elastic member, a first end of which is fixed to the housing unit and a second end of which is fixed to the outer needle slide unit, and a fixation release unit configured to release the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube.