Abstract: An in-line fluid flow controller (5) for use with a fluid administration set (1) for infusion of fluid into the body of a patient, the administration set comprising a reservoir of fluid connected to a supply line (2) having a discharge orifice; characterized in that the fluid flow controller comprises a housing (11) having a chamber therein, and inlet (13) to and an outlet (14) from said chamber, said housing being adapted to receive therewithin at least one flow restrictor (12) each having an orifice (18) or orifices configured to control the rate of fluid flow therethrough and into the body of a patient such that the fluid is infused into a patient at a predetermined constant flow rate or at a flow rate within predetermined limits via said discharge orifice.

Abstract: Apparatus for regulating pressure in and for controllably pressurizing infusion devices includes a flow-through pressure gauge for indicating and regulating the pressures within such infusion devices between minimum and maximum desirable pressures. Such apparatus includes a gauge, coupled between a fluid source and the bladder portion of the pressure infusion device. The gauge receives pressurized fluid from the fluid source, provides fluid to the bladder, indicates a range of fluid pressures in the bladder and maintains the pressure of fluid in the bladder between minimum and maximum pressures. The gauge includes a telescopingly coupled member to indicate a range of pressures in the bladder. A first valve permits the passage of fluid through the gauge and into the bladder when the fluid pressure exceeds a minimum pressure. A second valve prevents the passage of fluid through the gauge and into the bladder when the fluid pressure exceeds a maximum pressure.

Abstract: A device for regulating fluid flow in an intravenous line comprises a housing and a flow path system in the housing for defining a plurality of separate flow paths having respective predetermined characteristic flow rates. The housing has an input port connectable to an intravenous line segment extending from an intravenous fluid supply and also has an output port connectable to an intravenous line segment extending to a catheter. The device additionally comprises a selector mounted to the housing and in contact with the flow path system for selectively opening the flow paths to connect the output port to the input port, thereby controlling the amount of fluid or solution flowing through the output intravenous line to a patient.

Abstract: This invention concerns a device for applying a medicated solution on the skin for dermatological treatment. This applicator (10) essentially comprises an elongated tubular component (11) with an internal cavity (12) in which is fitted a piston (18) secured to the end of a piston rod (21) integral with a micrometer screw mechanism (23). A chamber (27) made in the inner cavity (12) between the piston (18) and plug (13) is designed to contain the therapeutic solution which may be taken in or discharged through capillary conduits (14 and 17) of the plug (13) and an applicator end (16). This applicator makes it possible precisely to meter and deposit a predetermined volume of the treatment solution on the exact place to be treated.

Abstract: A pharmaceutical dispenser includes a housing (4), containing two pharmaceutical cartridges (32,34), slidably mounted to a sliding body (100). A replaceable needle manifold assembly (10) is mounted to the housing and fluidly couples the cartridges with a hypodermic needle at a common exit. The sliding body is part of a reciprocating drive assembly used to drive a pair of drive stems (88) against the pistons (96, 98) of the cartridges, thus forcing predetermined amounts of the pharmaceuticals out the needle. The movement of the sliding body between retracted and post-injection positions remains constant. However, the amounts and proportions of the pharmaceuticals injected during the delivery stroke is chosen by the user using stroke adjusters (182) carried by the sliding body. A bistable status flag (186) is mounted to the sliding body to indicate when the sliding body is in the post-injection and the retracted positions. The dosage adjustments are made when the sliding body is in the post-injection position.

Abstract: A variable proportion dispenser (2) includes a housing (4) which houses two pharmaceutical cartridges (6, 7). A reciprocating drive assembly (10) includes a drive stem (36, 37) extending from the piston (46) of each cartridge, a sliding body (66) mounted to the housing, and two one-way drive devices (54, 55) carried by the sliding body. Each one-way drive device includes a threaded dosage adjuster (60 6I), and a reciprocating, one-way driver (58, 59) which drives the drive stem into the cartridge. The distance the reciprocating driver can move on the return stroke away from the cartridge is adjustable by changing the threaded position of the dosage adjuster within the sliding body to change if and when the opposed ends (98, 96) of the dosage adjuster and reciprocating driver disengage during the return stroke. During the next delivery stroke, the separated opposed ends (98, 96) do not contact for an initial portion of the stroke.

Abstract: An apparatus for the patient-controlled delivery of a beneficial agent comprising a dose reservoir for receiving and storing a beneficial agent, inlet means to and outlet means from the dose reservoir and pump means operative in response to an external force supplied to the pump means for drawing beneficial agent into the dose reservoir at a relatively constant rate and for discharging the beneficial agent out of the dose reservoir through the outlet means.

Abstract: A digital dispenser aid device (10) of the type for use with a syringe (12) includes a housing (24). The syringe (12) can be fixedly mounted within a chamber (28) within the housing (24). A body member 54 includes a recessed portion (56) retaining the cap portion (22) of a plunger (20) therein. The body member (54) is moveable for drawing the plunger (20) of the barrel (14) to draw medicant into the barrel (14). A digital readout display is operatively connected to the body member (54) for projecting a digital output quantitating the amount of fluid drawn into the barrel (14) by movement of the plunger (20) axially out from the barrel (14).

Abstract: Disclosed is a disposable safety syringe which comprises a reservoir and a tubular sheath. The reservoir serves to aspire therein or to inject therefrom a fluid, while the tubular sheath is integrally attached to and in fluid communication with the reservoir. In the sheath there is located a hollow needle and a needle-carrying means, suitably a bushing, which are axially slidable between a position of safety and protection for the needle within said sheath and an operative position in which the needle is fully protruding outside of the tubular sheath. When in this latter position, the needle is in air-tight fluid communication with the reservoir.

Abstract: This invention discloses disposable infusion delivery systems, in each of which fluid is drawn into a receiving and retaining housing and a piston is slideable in said housing. As the piston is moved away from a discharge end of the housing, at least one elastomeric member is stretched, with the stored fluid ahead of said piston discharged from said housing by the force developed by said stretched elastomeric member. This stored fluid provides a continuous flow of fluid to a patient. There are three arrangements shown. The first enables additive drugs to be infused into a fluid stream without purging. The second shows a syringe adapted to provide the disposable infusion device, and the third provides a fluid stream to and through a pressure transducer, enabling monitoring of blood pulses with minimum distortion.

Abstract: The present invention relates to a device for dispensing a fluid from a container by means of the axial movement of a piston within the container under the influence of a plunger moved by the device, which device is adapted to receive the container on its forward end and to move the plunger axially forward towards or within the container so as to dispense a selected amount of fluid from the container upon each actuation of the device, characterized in that the device comprises:i. a disengageable drive mechanism adapted to be reciprocated axially of the device and adapted to positively engage the plunger whereby the plunger can be moved axially forward by the drive mechanism and to be disengaged from the plunger to permit relative axial movement between the drive mechanism and the plunger;ii. a disengagement means for selectively engaging or disengaging the drive means from the plunger;iii.

Abstract: A suction injector, particularly for use with hypodermic injections, has a liquid container with a compartment containing pressurized gas, a hose to a cannula into a suction cup, which may be replaced after every use, consisting of an outer chamber with stored underpressure, which works, after a hole is opened by the shifting of supporting tube, moved by the pressure of skin pushing against this supporting tube. The underpressure of the suction cup starts a kind of spring driven roller pump provided with blocking dosing pegs for a multiple dosing choise. A valve for automatic reventilation is provided, as is a blocking and marking mechanism, relating to the emptying of the liquid supply, consisting of a taster finger, engaged in a hose loop, which frees the movement of a spring driven seivel arm against the skin and the suction cup, if the medicine supply is emptied. A revolution counter for the control of therapy is provided.

Abstract: A calibration syringe for controllably delivering gas to a respiratory gas measuring instrument during the calibration thereof. In addition to the piston and cylinder arrangement used in prior syringes, the calibration syringe of the invention includes several improvements which enhance the accuracy and repeatability of the volume of gas delivered thereby. One improvement comprises a modified inlet-outlet design which assures a positive shutoff of the flow of gas at the end of an ejection stroke. A second improvement comprises the provision of a spring-loaded mechanism for automatically propelling the piston at any of several operator selectable rates. Finally, the calibration syringe of the invention includes a latching arrangement which assures that each ejection stroke begins from the same starting position and is initiated in a way that minimizes operator-related effects.