Abstract: A surgical robot according to this disclosure includes the joint including an electric motor, a first speed reducer configured to reduce a speed of rotation of the electric motor, and to provide the speed-reduced rotation, a gear part configured to further reduce the speed of the rotation provided from the first speed reducer, and to provide the further-speed-reduced rotation, and a second speed reducer configured to reduce the further-speed-reduced rotation provided from the gear part.

Abstract: A surgical robot according to this disclosure includes a wiring-line set that is arranged in a robot arm so that the wiring-line set extends in a longitudinal direction of the robot arm, and passes through a rotation axis of a first joint, which is configured to rotate in a bending direction of the robot arm, and through a plane orthogonal to the longitudinal direction of the robot arm.

Abstract: A medication administration device includes: a casing; a syringe including: a barrel housed in the casing, and a puncture needle in fluid communication with the barrel; a needle cover having a hollow cylindrical shape, disposed inside the casing, covering a distal end of the syringe, and configured to be displaced toward a proximal end relative to the casing when the needle cover is pressed against a puncture target; a plunger disposed inside the casing and configured to eject the medication through the puncture needle upon movement of a distal end of the plunger inside the barrel; a signal generator configured to generate a signal indicative of completion of administration of the medication into the living body along with distal movement of the plunger; and a delay mechanism located in the casing and configured to delay the distal movement of the plunger.

Abstract: A medication administration device includes: a casing; a syringe including: a barrel housed in the casing, and a puncture needle in fluid communication with the barrel and configured to administer the medication to a living body; a needle cover having a hollow cylindrical shape, disposed inside the casing, covering a distal end of the syringe, and configured to be displaced toward a proximal end relative to the casing when the needle cover is pressed against a puncture target; a plunger disposed inside the casing and configured to eject the medication through the puncture needle upon movement of a distal end of the plunger inside the barrel; and a cap detachably disposed at a distal end of the needle cover, and configured to be detached before the puncture needle punctures the puncture target.

Abstract: A prefilled syringe includes a barrel body, a gasket that seals a proximal end side of a medicine chamber of the barrel body, and a cap that is attached to a tip and seals a distal end side of the medicine chamber. The cap includes a surface area increasing member that extends to the proximal end side, is inserted into a flow path of the tip, and protrudes to the medicine chamber to increase a surface area of a medicine solidified in a lump in the medicine chamber.

Abstract: A needle-equipped outer cylinder includes: a needle tube; a joining member comprising: a needle tube accommodation hole that accommodates a proximal end side portion of the needle tube and penetrates the joining member from a distal end of the joining member to a proximal end of the joining member, and a joining outer peripheral portion provided on an outer peripheral portion of the needle tube accommodation hole; and an outer cylinder member comprising: a distal end joint that comprises an inner cavity that receives the joining outer peripheral portion of the joining member from a distal end side, and a projection located at a proximal end portion of the inner cavity and projecting into the inner cavity. The joining member comprises, at a proximal end portion of the joining member, an abutment portion that abuts the projection of the outer cylinder member.

Abstract: A syringe barrel grip is attached to a syringe barrel including a flange in which a pair of flange straight portions is formed. A flange housing portion of the grip includes a flange rotation restricting portion that restricts relative rotation between the grip and the flange that has entered the flange rotation restricting portion by rotating the barrel by a predetermined angle in a state where the flange is housed in a flange insertion portion, and there is a gap for allowing a sterilization gas to flow between a lower inner peripheral surface of the grip and the barrel in a state where the flange is housed in the flange rotation restricting portion.

Abstract: A prefilled syringe includes a barrel body, a gasket that seals a proximal end side of a medicine chamber of the barrel body, and a cap that is attached to a tip and seals a distal end side of the medicine chamber. The cap includes a surface area increasing member that extends to the proximal end side, is inserted into a flow path of the tip, and protrudes to the medicine chamber to increase a surface area of a medicine solidified in a lump in the medicine chamber.

Abstract: A gasket pressing tool includes a syringe attachment member attached to an outer tube, a gasket pressing member that presses a gasket of a syringe, a pressing member biasing body accommodated in the gasket pressing member, a biasing body pressing tubular member that accommodates a rear end portion of the pressing member biasing body and has side portions provided with opening portions, and movement restriction members of the pressing member held by the tubular member and having engagement protrusions that enter through the opening portions of the tubular member. The pressing tool has an engaged state maintaining function for the engagement protrusion of the movement restriction member and the pressing member-side engagement portion of the pressing member, and an operation function for the engagement protrusion for releasing the engagement therebetween.

Abstract: A needle-equipped outer cylinder includes: a needle tube; a joining member comprising: a needle tube accommodation hole that accommodates a proximal end side portion of the needle tube and penetrates the joining member from a distal end of the joining member to a proximal end of the joining member, and a joining outer peripheral portion provided on an outer peripheral portion of the needle tube accommodation hole; and an outer cylinder member comprising: a distal end joint that comprises an inner cavity that receives the joining outer peripheral portion of the joining member from a distal end side, and a projection located at a proximal end portion of the inner cavity and projecting into the inner cavity. The joining member comprises, at a proximal end portion of the joining member, an abutment portion that abuts the projection of the outer cylinder member.

Abstract: A syringe assembly includes: a syringe including: a puncture needle having a needle tip, and a barrel holding the puncture needle; a hollow cylindrical grip fitted on an outer peripheral portion of the barrel; and a protective device including a hollow cylindrical cover member that is axially displaceable relative to the barrel, the protective device being configured such that the cover member covers at least part of the puncture needle in an initial state, the cover member is displaceable in a proximal direction relative to the barrel by being pressed against an object to be punctured when the puncture needle is inserted into the object to be punctured, and the cover member is configured to cover the needle tip after insertion of the puncture needle into the object to be punctured.