The present disclosure includes systems, methods, and apparatuses for dispensing a volume (e.g., a volume of liquid or medication) during intraosseous infusion. In some embodiments, a resilient member is used to bias a portion of an arm towards a contracted position with a force sufficient to depress a plunger of a syringe, and a damper is used to resist movement of the portion of the arm from the extended position toward the contracted position to control a rate at which the resilient member can move the portion of the arm from the extended position toward the retracted position, and thereby limit the rate at which a volume is dispensed from the syringe. In other embodiments, a flow control valve may be used instead of a damper to limit the rate at which a volume is dispensed from the syringe.

A pushing unit is stopped just before abutting against a rear end of a syringe to reliably prevent unwanted extrusion of a chemical liquid from a syringe. An injecting apparatus for injecting a chemical liquid includes: an injection head to which a syringe filled with the chemical liquid is to be mounted; a pushing unit provided on the injection head and pushing a rear end of the syringe; a rear end detection unit provided on the injection head and detecting the rear end in a contactless manner; and a control unit configured to control the injection head, the control unit acquiring a forward movement distance that the pushing unit is to be moved forward after the rear end is detected, and causing the pushing unit to move forward by the forward movement distance after the rear end is detected and to stop at a position separated from the rear end.

A pump device (1) for administering a medical fluid to a patient comprises a holding device (10) for receiving a syringe barrel (20) of a syringe (2), the holding device (10) comprising a stationary section (101) and a holding member (11) movable with respect to the stationary section (101) between an opened position and a closed position, wherein the holding member (11) is configured to secure, in the closed position, the syringe barrel (20) of a syringe (2) received on the holding device (10) with respect to the stationary section (101). A shaft (130) is coupled to the holding member (11), the shaft (130) being constituted to rotate during a movement of the holding member (11). Herein, a damping device (14) comprises a movable part (140) connected to the shaft (130) and rotatable together with the shaft (130) and a stationary part (141) fixed with respect to the stationary section (101) of the holding device (10), a rotational movement of the movable part (140) with respect to the stationary part (141) providing for a damping of the movement of the holding member (11). In this way a pump device for administering a medical fluid to a patient is provided which may provide for a secure fastening of a syringe barrel and at the same time helps to avoid a damaging of in particular smaller syringes by clamping forces of the holding member.

Systems and methods for spraying a liquid treatment solution can include a syringe attachment device and a handheld device, which are configured to be coupled together in an assembled position of the system. The syringe attachment device can be configured to secure a syringe containing the liquid treatment solution. In an example, the treatment solution can include autologous skin cells for treating a tissue wound. The handheld device can have a movable slide configured to dispense the treatment solution from the syringe. In an example, the spray deposition system can include a cover positioned to provide an impervious barrier between at least a portion of the syringe attachment device and the handheld device. The cover can be attached to the syringe attachment device prior to coupling the devices together. In an example, the cover can have a generally tubular shape with a closed end and an open end. The handheld device can be inserted into the cover and the cover can enclose the handheld device in the assembled position. In an example, the cover can be sterile and at least a portion of the syringe attachment device can be sterile. In an example, after delivery of the treatment solution, the syringe attachment device can be disposed of and the handheld device can be reused.

An infusion device (3) for administering a medical fluid to a patient, comprises a housing (30) and a receptacle (300) arranged on the housing (30) for receiving a syringe (4), the syringe (4) having a barrel (41) for containing a medical fluid and a plunger (42) movable relative to the barrel (41) for delivering the medical fluid out of the barrel (41). A pusher device (32) is movable relative to the housing (30) for acting onto the plunger (42) for moving the plunger (42) relative to the barrel (41), and a drive mechanism (38) drives the pusher device (32). A coupling mechanism (36, 37) is operative to couple the plunger (42) to the pusher device (32) or to couple the pusher device (32) to the drive mechanism (38), and an actuation mechanism arranged on the pusher device (32) comprises an actuation element (33) for actuating the coupling mechanism (36, 37) between a coupling state and an uncoupling state. Herein, the actuation mechanism comprises a first threaded element (34) rotatable about a rotational axis (342) and a second threaded element (331) movable along the first threaded element (34), the second threaded element (331) being in threaded engagement with the first threaded element (34) such that the first threaded element (34) is rotated when the second threaded element (331) is moved along the first threaded element (34), wherein the actuation element (33) is actuatable to move the second threaded element (331) along the first threaded element (34), the first threaded element (34) being operatively connected to the coupling mechanism (36, 37). In this way an infusion device is provided which in an easy and comfortable manner allows a user to actuate a coupling mechanism, in particular for installing a syringe on a receptacle of the infusion device.

Syringe pumps are described herein. A syringe pump is disclosed comprising a syringe pump body, a flange clamp and a sensing switch. The syringe pump body defining a syringe body recess and a syringe plunger recess, wherein the syringe body recess and the syringe plunger recess are configured to cooperatively receive a syringe. The flange clamp is coupled to a mating surface of the syringe pump body disposed between the syringe body recess and the syringe plunger recess, wherein the flange clamp is configured to be spaced apart from the mating surface to receive a syringe flange of the syringe. The sensing switch extends through the mating surface, wherein the sensing switch is configured to be in a closed state when the flange clamp is in contact with the sensing switch and in an open state when the flange clamp is spaced apart from the sensing switch.

A single-hand controlled syringe with plunger extension includes a barrel, a plunger fit to the barrel, and a plunger extension integrated with the plunger. The plunger extension consists of a head, a back, and a body between the head and the back. The body of the plunger extension is oriented parallel to the plunger, with integrated connection at the back of the plunger extension and the back of the plunger. Depressing the head of the plunger extension moves the syringe from the contracted state to the retracted state. Such syringe with plunger extension is useful to draw blood or fluid with a single hand.

A smart drug injection device is disclosed, comprising a main body, a circuit board, a display, a syringe and a transmission mechanism; the main body comprises an accommodating space and a power button; the circuit board comprises a control unit and a storage unit; the transmission mechanism comprises a motor, a screw rod, a propelling block and a movable clamp, with the control unit electrically connected to the storage unit, the power button, the motor and the display, the motor connected to the screw rod, the propelling block movably arranged on the screw rod, the movable clamp disposed at one end of the propelling block and movable between two positions; the syringe is on one side of the main body and comprises a cylinder and a needle holder, one end of the cylinder has a needle and the other end is assembled with the needle holder.

A syringe pump to deliver heparin to into the blood circuit of a hemodialysis system. The syringe pump is configured to receive a syringe having a plunger movable within a lumen of an elongate tubular member. The syringe pump may include a housing having a recess configured to receive at least a portion of the syringe, a drive mechanism for moving the plunger within the lumen, the drive mechanism comprising a motor and a lead screw; and a grabber mechanism. The grabber mechanism includes a control arm, back panel, and upper and lower control fingers, the control fingers each have first and second ends, and a curved portion therebetween having a width, an interior edge, and an exterior edge, wherein the first ends of the upper and lower control fingers are coupled to the control arm via first and second spring hinges.

An injector system for injecting fluid includes a syringe and an injector. The syringe includes a body and a plunger movably disposed within the body. The plunger has at least one flexible leg extending toward the rearward end of the body. The injector has a housing with a front plate, a drive member at least partially disposed within the housing and operable to engage the plunger, and a syringe release assembly operable to release the syringe. The syringe assembly includes a syringe release gear that forms an enclosure for receiving the syringe when the syringe is fully seated within the housing and a plunger release tube surrounding at least a portion of the drive member. The plunger release tube has a first end rotationally engaged with the syringe release gear. Rotation of the syringe release assembly releases the at least one flexible leg from the drive member.