Abstract: A flow control device includes an upper housing, a lower housing, a chamber interposed between and defined by the upper and lower housings, and a valve member. The upper housing includes a primary inlet having an internal surface defining a cavity and a secondary inlet. The lower housing defines an outlet of the flow control device. The chamber fluidly connects the primary and secondary inlets with the outlet. A valve member is reciprocally disposed at least partially in the cavity and partially in the chamber to (i) selectively permit fluid flow in the primary inlet in a first direction when a fluid level in the chamber is below a predetermined level, and (ii) prevent fluid backflow in a second direction opposite to the first direction when the fluid level in the chamber is above the predetermined level.

Abstract: IV spikes are described herein. An IV spike includes a spike body. The spike body can be formed of a first material and can include a spike portion converging to a point. The IV spike further includes at least one spike flow port formed through the spike body. The IV spike further includes a lower flow port in fluid communication with the at least one spike flow port. The IV spike can also include an overmolded engagement feature disposed around the spike body, wherein the overmolded engagement feature comprises a second material and is configured to retain the IV spike within an IV container.

Abstract: The present invention relates generally to providing pressurized infusion of liquids and, more particularly, is directed to providing a stable and pressurized flow of irrigation fluid to the eye during surgery.

Abstract: A medical system is capable of displaying and recording injection sites of patients. After patient identification based on the patient's vein patterns, the system can retrieve and display previous injection sites (e.g., for blood draw or injection) of the patient as overlaid at actual positions of the injection sites. The system can determine potential new injection sites based on the locations of the previous injection sites. The system can also ensure workflow compliance by displaying and tracking procedures performed by the healthcare professional.

Abstract: A drip chamber is described that is used in medical infusion therapy, wherein the drip chamber utilizes valving to control flow of one or more fluids to a patient. The drip chamber includes a body forming a chamber, wherein fluid may enter via two or more flow ports, and an output port, where fluid may exit the chamber. A float controls fluid flow through one or more flow ports into the chamber such that the flow exiting the chamber may be limited to a single fluid or a combination of the fluids entering the chamber. The float is configured to be retained within the chamber, and the float moves within the chamber based on a level of fluid within the chamber. The control characteristics of the float are determinable by attributing specific buoyancy and dimensions to the float.

Abstract: A system for dispensing a liquid includes a source (24) of a liquid that crystallizes upon exposure to water moisture in air (e.g., an isocyanate). A dispenser (58) includes an inlet conduit (62) for receiving the liquid from the source, an outlet conduit (72) for dispensing the liquid out of an outlet opening exposed to air, and a valve (66) between the inlet (62) and outlet conduits (72). In the closed position of the valve (i) an upstream portion of the liquid is retained in the inlet conduit (62) on the upstream side of the valve (66) and (ii) a downstream portion of the liquid extending from the downstream side of the valve to the outlet opening is retained in the outlet conduit (72) on the downstream side of the valve (66). The size of the outlet opening of the outlet conduit (72) is sufficiently small to retain the downstream portion of the liquid in the outlet conduit when the valve (66) is in the closed position.

Abstract: An infusion device for infusion of a fluid from a reservoir into a body, the infusion device being connectable to an infusion set adaptor at a connecting site, the infusion device comprising: a drive mechanism to operatively couple with at least a portion of the reservoir; a housing being sized to contain at least a portion of the reservoir, wherein the drive mechanism is at least partially or fully contained within the housing; a sealing device that permits the passage of air into and out of the housing or a housing compartment and inhibits the passage of liquids into the housing or a housing compartment through the sealing device; wherein the sealing device is arranged at the drive mechanism or at a location between a part of the drive mechanism and the connecting site of the infusion set adaptor or at the connecting site of the infusion set adaptor.

Abstract: A disposable intravenous flow control device (20) includes a rigid casing (21) defining a flow passage having a fluid entrance (23) and a fluid exit (22); a flow regulator (10) disposed in the flow passage of the casing (21) and comprising an annular flange (11) extending upward, a hollow, cylindrical protrusion (12) raised upward from a central portion, the protrusion (12) being open to the bottom, an open fluid storage (13) defined between the flange (11) and the protrusion (12), and a hollow, cylindrical skirt (14) extending downward from the bottom of the protrusion (12); and a suction cup (15) releasably secured to the skirt (14) for blocking the fluid exit (22) when fluid in the casing (21) is consumed.

Abstract: The present invention relates to a drug delivery comprising a housing (10) adapted to retain a cartridge (16) and a piston rod (26), the piston rod (26) being adapted to drive a piston (28) so as to engage the piston (28) into the cartridge (16) in response to operating an operating button (30), and an indicator means (40) being capable of revealing usage related information of the drug delivery device (5), the indicator means (40) being movable with respect to the housing (10). Furthermore, using indicator means (40) on a drug delivery device (5), wherein the so as to reveal usage related information of the drug delivery device (5), wherein the indicator means (40) being movable with respect to a housing (10) of the drug delivery device (5) is disclosed.

Abstract: A gravity-fed, emergency eyewash station includes a flow regulator in the feed line between the solution bag and the dispensing nozzle to maintain a constant flow rate throughout the entire activation time frame. The flow regulator uses a float valve to variably open and close an orifice that feeds the dispensing nozzle. Solution enters the flow regulator from an orifice at the top and leaves from an opening at the bottom. Solution flowing into and out of the regulator quickly reaches an equilibrium state, resulting in a constant flow rate for the entire activation time frame.

Abstract: A gas vent valve assembly may be attached or incorporated to a disposable fluid transfer set used with a fluid warmer to administer an infusate to a patient. The gas vent valve assembly has a housing having a fluid inlet, a gas outlet and a fluid outlet. The gas outlet is located at the top of the housing while the fluid outlet is located at the bottom of the housing. The fluid inlet is located at a side lower portion of the housing. Inside the housing is an actuator float that has an upper seal and a lower seal. The dimension of the float relative to the chamber of the housing is such that the float is freely movable within the housing to an upper position whereby its upper seal closes the gas outlet while the fluid outlet is opened, and to a lower position whereby its lower seal closes the fluid outlet and the gas outlet is opened. The movement of the float is dependent on the respective amounts of air and fluid in the housing, and the buoyancy of the float relative to the fluid in the housing.

Abstract: An intravenous flow control device includes a flexible drip chamber (20) comprising a fluid entrance (22) and an open bottom (231); a rigid drip assembly (30) secured to the drip chamber (20) and comprising an inner cylinder (31) having a bottom exit (331); and an internal float valve (10) comprising a fastening member (12) including a hollow inner cylinder (121), a plunger (11) slidably disposed through the inner cylinder (121), an upper float member (15) secured to one end of the plunger (11), a lower float member (13) secured to the other end of the plunger (11), and a block member (14) secured to the lower float member (13) for sealingly blocking the exit (331). Fluid flows into the inner cylinder (31) for accumulation so as to float the block member (14), thereby unblocking the exit (331) and moving the plunger (11) upward.

Abstract: A flow control system includes a drip chamber having lower and upper wall sections and a collapsible wall extending between the lower and upper wall sections, a downwardly depending valve seat attached to the lower wall section, and a valve member disposed in the drip chamber, attached to the upper wall section and having a valve surface engageable with the valve seat. The system also includes a driver rotatably engaged to the lower and upper wall sections. Upon rotation of the driver in a first direction, the collapsible wall of the drip chamber moves between a collapsed condition in which the valve seat is sealingly engaged with the valve surface and an extended condition in which the valve seat is sufficiently spaced from the valve surface to form a flow passageway between the valve surface and the valve seat and permit flow through the opening of the drip chamber.

Abstract: An intravenous infusion device (10) comprises a fluid drip chamber (11) having an inlet (12) and an outlet (13). A floating plug (14) provides an indication of fluid level and when the fluid is exhausted the plug (14) settles in the outlet (13) and, being made from a soft deformable material, effectively forms a bung preventing air entering the line (4). It is thus a simple matter to replace an associated fluid bottle (2) and allow the replenished fluid to flow with minimal interruption or intervention. By providing the plug (14) with a flexible skirt or fin (15) and providing the chamber (11) with a conical end section (16) an enhanced seal is provided by the fin (15) engaging the conical section (16). In a further enhancement the conical section (16) has an opaque lower section (17) and the plug (14) is thus obscured from view as the fluid is depleted providing an enhanced visual indication that the fluid bottle (2) is empty.

Abstract: One embodiment of a blood transfusion device includes a drip chamber (10) comprising a bottom outlet (113); a filter (40) fixedly disposed in the drip chamber (10); and a float regulator (20) moveably disposed in the drip chamber (10) under the filter (40), the float regulator (20) comprising an inverted upper cup (21) including a top projection (212), a lower cup (22) secured to the upper cup (21), and a suction cup (23) secured to an underside of the lower cup (22). An inner diameter of the upper cup (21) is greater than an outer diameter of the lower cup (22). The projection (212) contacts an underside of the filter (40) when blood from a blood bag (90) sufficiently fills the drip chamber (10). The suction cup (23) falls to permanently close the outlet (113) when blood in the drip chamber (10) completely drains.

Abstract: A method for cerebral and systemic cooling by circulating a cold liquid through a nasal catheter looped through the patient's nasal cavities and around the nasal septum. The nasal catheter is inserted into the patient's first nostril, advanced through the nasal cavity, around the nasal septum and out of the patient's second nostril. A cold fluid having a temperature between about ?20° C. and about 37° C. is flowed though a lumen in the nasal catheter to cool the nasal cavity. The nasal catheter may have one or more flexible balloons mounted on the catheter such that when the catheter is looped around the nasal septum, the balloon(s) are positioned in a portion of the patient's first and second nasal cavities. When a cold liquid is circulated through the catheter lumen, the flexible balloons expand to a contact the inner walls of the nasal cavities and provide direct cooling of the nasal cavities.

Abstract: A system to minimize fluid turbulence inside a tissue cavity during endoscopic procedures. A body tissue cavity of a subject is distended by continuous flow irrigation using a solenoid operated pump on the inflow side and a positive displacement pump, such as a peristaltic pump, on the outflow side, such that the amplitude of the pressure pulsations created by the outflow positive displacement pump inside the said tissue cavity is substantially dampened to almost negligible levels. The present invention also provides a method for accurately determining the rate of fluid loss into the subject's body system during any endoscopic procedure without utilizing any deficit weight or fluid volume calculation, the same being accomplished by using two fluid flow rate sensors. The present invention also provides a system of creating and maintaining any desired pressure in a body tissue cavity for any desired cavity outflow rate.

Abstract: The present disclosure provides for an airless intravenous (IV) bag which contains a specialized device, referred to herein as the airless intravasculature infusion device (AIVID). The AIVID allows one to view the amount of fluid in the IV bag but substantially decreases or completely prohibits the risk of an inadvertent air infusion into a patient.

Abstract: An intravenous flow control device includes a flexible drip chamber (20) comprising a fluid entrance (22) and an open bottom (231); a rigid drip assembly (30) secured to the drip chamber (20) and comprising an inner cylinder (31) having a bottom exit (331); and an internal float valve (10) comprising a fastening member (12) including a hollow inner cylinder (121), a plunger (11) slidably disposed through the inner cylinder (121), an upper float member (15) secured to one end of the plunger (11), a lower float member (13) secured to the other end of the plunger (11), and a block member (14) secured to the lower float member (13) for sealingly blocking the exit (331). Fluid flows into the inner cylinder (31) for accumulation so as to float the block member (14), thereby unblocking the exit (331) and moving the plunger (11) upward.

Abstract: One example of a media delivery system includes a burrette defining a chamber and having inlet and outlet connections in fluid communication with the chamber. The burrette further includes a vent assembly configured for fluid communication with the chamber. In addition, a float and seat assembly of the media delivery system include a buoyant float positioned in the chamber of the burette, where the float is arranged for movement within the chamber. The float and seat assembly further includes a seat assembly positioned in the chamber of the burrette and configured to cooperate with the float to manage a flow of fluid through the outlet connection of the chamber. Finally, a fluid management device is provided that is located proximate the inlet to the chamber.

Abstract: The present invention relates to a turbulence minimization apparatus comprising a float and seat assembly adapted to control turbulence and formation of microbubbles in a quantity of contrast media in the burette of a contrast media delivery system. The float includes an upper convex surface providing an impact surface for droplets of contrast media which fall from the inlet of the burette, a lower convex surface for sealing a drainage bore when the volume of contrast media has been substantially drained from the burette, and a predetermined amount of buoyancy. The seat assembly includes a plurality of fluid passageways that allow contrast media to contact the lower convex surface of the float allowing the buoyancy of the float to separate the float from the drainage bore when there is more than a predetermined amount of fluid in the drip chamber.

Abstract: An apparatus regulates fluid flow supplied to a patient through an intravenous infusion system. The apparatus includes a first fluid passageway, a second fluid passageway, an inlet, and a control device. The first fluid passageway is for discharging fluid therefrom at a first predetermined rate of flow. The second fluid passageway is for discharging fluid therefrom at a second predetermined rate of flow, wherein the second predetermined rate of flow is different than the first predetermined rate of flow. The inlet is in flow communication with the first and second fluid passageways. The control device is between the inlet and the first and second fluid passageways, and is variably positionable for controlling fluid flow into the first and second fluid passageways.

Abstract: The present invention provides apparatus for measuring volumetric or mass flow of fluid. The apparatus comprises a capsule that is adapted to move upwardly and downwardly within a housing and receive fluid from a tube. The apparatus further comprises force exerting means and preferably a magnetic means that is adapted to exert force on the capsule, the force is proportional to a position of the capsule within the housing. The force is measurable and controllable. A seal is provided in the capsule's bottom opening so as to fluidically block the capsule and a pin is provided so as to push aside the seal when the capsule is downwardly positioned and is filed with fluid so as to drain it. The number of times the capsule is drained in a predetermined time can be calculated so as to attain the volumetric flow rate of the fluid through the apparatus.

Abstract: An infusion device includes an upstream pressure control device and a downstream flow control device. The device receives infusion liquid via an inlet and controls the level of liquid in a chamber by means of a float which can close both the inlet and an outlet. A filtered vent maintains atmospheric pressure in the chamber. The device receives infusion liquid at constant head via a flow pipe. A dripper delivers droplets into an airtight chamber. A taper needle renders an orifice adjustably open to a desired degree to deliver liquid at a selected rate. Screw threaded adjustment and calibration means allow calibrated adjustment. A flow pipe delivers a metered flow of infusion liquid for infusion into a human or animal body.

Abstract: A contrast dispensing system (10) reduces cost by directly connecting a check valve (210) to and between the reservoir inlet port (220) and the mating luer connector (204) of a disposable set (200). A contrast dispensing system (10) includes as part of the reservoir (212) an integrally molded cap (280) having the inlet port (200) and a lateral pipe (300) to confine contrast media (14) therein and disperse it at separate locations (334, 336) within the chamber (260) of reservoir (212). The reservoir (212) may have a vent port (284) with a flip cap (294) for selectively opening or closing same.

Abstract: A magnetic automatic stop valve formed in a container of a medical fluid administration system has one magnetic element located in a float and another magnetic element located proximate a valve seat. As the fluid level in the container decreases, the magnetic field established between the float and the valve seat eventually overcomes the buoyancy of the float in the fluid and attracts the float into the valve seat at which position the flow of fluid from the container is stopped. The float is formed of two identical halves each of which has one half of an internal post. When joined together to make the float, the internal post is fully formed and extends from one end of the float to the other. One magnetic element is slid over the post during manufacture and is free to slide from one end of the float to the other.

Abstract: The present invention relates to a nonreturn warning device for an intravenous drip infusion which includes a top member and a bottom member both of which forms an accommodation which has an inlet pipe and an outlet pipe at the top and bottom thereof. The outlet pipe includes a flange around which a recess is provided. A conic valve with a middle hole is arranged onto the flange. A float with a cylindrical stopper is received in the accommodation formed after connection of the top member and the bottom member. The middle section of the float contains a magnetic element, and a warning device is fitted beside the top member. Besides, a magnetic reed switch is installed in the warning device. As the float sinks with the fluid surface in the accommodation, the magnetic element approaches the magnetic reed switch and the magnetic force of the float will activate a buzzer for giving out a warning sound which is transmitted through a headphone jack or a radio transmitter to the nurses' call station.

Abstract: A buret with foot valve for medical infusion equipment, including a transparent cylindrical container having a bottom wall with a central outlet hole for outlet of the liquid and a lateral graduated scale for indication of the level of the liquid. A float disk co-operates inside the container with the graduated scale for immediate identification of the level of the liquid, and a valve obturator is associated to the float disk for closing the outlet hole when the liquid inside the container comes to an end. The valve obturator is floating with respect to the float disk.

Abstract: The present invention relates to a nonreturn warning device for an intravenous drip infusion which includes a top member and a bottom member both of which forms an accommodation which has an inlet pipe and an outlet pipe at the top and bottom thereof. The outlet pipe includes a flange around which a recess is provided. A conic valve with a middle hole is arranged onto the flange. A float with a cylindrical stopper is received in the accommodation formed after connection of the top member and the bottom member. The middle section of the float contains a magnetic element, and a warning device is fitted beside the top member. Besides, a magnetic reed switch is installed in the warning device. As the float sinks with the fluid surface in the accommodation, the magnetic element approaches the magnetic reed switch and the magnetic force of the float will activate a buzzer for giving out a warning sound which is transmitted through a headphone jack or a radio transmitter to the nurses' call station.

Abstract: A prewarning device for instillation of medical liquid includes a throttling cylinder having a tubular needle connected to an open top thereof. A pointed head portion of the tubular needle is inserted into a medical liquid bottle for the medical liquid to flow into the throttling cylinder via the tubular needle. A portion of the tubular needle between the head portion and the throttling cylinder is transparent for a clamp to clamp therearound. A sensor is provided on the clamp to connect to a warning unit via a wire. The tubular needle defines a downward tapered inner space to receive a float therein. When the medical liquid bottle becomes empty, the float lowers in the tubular needle and is sensed by the sensor for the latter to actuate the warning unit to sound. The lowered float also blocks up the tubular needle to stop air from passing therethrough.

Abstract: An intravenous (IV) flow controlling device comprises a flexible open container having a specific gravity less than one and an outer diameter smaller than that of the drip chamber, the container including a spherical bottom portion thinner than the shell upper portion thereof; a first plastic tube coupled to the bottom of the container being in communication with the exit; a flexible reservoir having one end coupled to the first tube; and a second plastic tube coupled to the other end of the reservoir being in communication therewith. The container is submerged as fluid filled in the drip chamber. Fluid flows through the exit, the first plastic tube, the reservoir, and the second plastic tube to cause the container to fall, thereby stopping fluid exiting when the bottom portion of the container clogs the exit and fluid in the drip chamber is used up.

Abstract: A device, system and method for improving delivery of hemostatic material, in which the device includes a vent cap body capable of removably engaging a cannula. The vent cap has a passage extending through the vent cap body from the cannula to an exterior of the vent cap body where a restricter for restricting the flow of fluid from the cannula to the exterior. In one embodiment, the vent cap has a valve which has an opened and closed position. In the closed position, the valve is designed to provide a back pressure or resistence. When a certain force is applied against the valve, the valve moves from the closed position to the opened position, where a gas or fluid may pass through the vent cap. The vent cap is designed to help maintain the continuity of the hemostatic material during delivery of the material from the adaptor to the trial staging chamber.

Abstract: Disclosed is a safety intravenous set in which a spherical ball is provided in a transparent barrel for confirming a flow of the Ringer's solution to easily float up due to its own buoyancy when the Ringer's solution is injected so that the Ringer's solution is facilely administered through a supplying tube, and also, when the administration of the Ringer's solution is completed, the spherical ball automatically blocks an outlet port so as to efficiently prevent a back flow of blood of the patient. The transparent barrier has a double-curbed structure at a lower portion thereof, and also has a hemispherical settling portion for easily floating up the spherical ball when the Ringer's solution is introduced into the transparent barrier.

Abstract: A buret with foot valve for medical infusion equipment, including a transparent cylindrical container having a bottom wall with a central outlet hole for outlet of the liquid and a lateral graduated scale for indication of the level of the liquid. A float disk co-operates inside the container with the graduated scale for immediate identification of the level of the liquid, and a valve obturator is associated to the float disk for closing the outlet hole when the liquid inside the container comes to an end. The valve obturator is floating with respect to the float disk.

Abstract: An automatic infusion-monitoring instrument includes a clip adapted to clamp a flow-indicating cylinder of an infusion set corresponding to a liquid level in the cylinder that keeps unchanged when there is sufficient amount of infusion liquid in the infusion set, a floater pre-disposed in the flow-indicating cylinder to move upward and downward along with the liquid level in the flow-indicating cylinder, a detecting unit having an emitter and a receiver mounted in the clip to normally face the floater, and an alarm unit electrically connected to the detecting unit via a conducting wire. When the liquid level in the flow-indicating cylinder lowers so that the floater is moved to locate below the emitter and the receiver and no longer blocks the wave emitted by the emitter, the alarm unit is actuated to emit sound, voice, light or flash as a warning signal of running-out infusion liquid.

Abstract: An IV container spike and drip chamber assembly is provided that includes an automatic shut off mechanism which allows nurses to change the fluid container without removing the catheter from the patient. The automatic shut off mechanism comprises a floating ball capable of being supported by or floating in the fluid due to the buoyancy of the fluid. The IV container spike also includes an air vent which allows the air in the drip chamber to vent out directly when the nurses want to change the container of medicinal fluid. The air vent is closed for the initial use and during the infusion process. As the medicinal fluid is gradually reduced in level in the drip chamber, the floating ball is lowered thereby and when the floating ball reaches the bottom of the drip chamber, the floating ball blocks the outlet so as to stop the injection.

Abstract: A fluid flow rate control device, especially adapted for controlling the flow of IV fluid to a patient, comprises a first vented fluid chamber having an upper fluid inlet end with a hollow spike which enables fluid connection with a conventional fluid container. A free floating float valve in the first chamber blocks the flow of fluid into the first chamber from the fluid container according to whether or not the fluid level in the first chamber is at a preestablished fluid level, thereby providing a constant pressure head regardless of fluid level in the fluid container. A lower end of the first chamber is connected, through a flow regulator, such as a screw-type valve, to an upper inlet end of a second, vented, drip chamber, the lower end of which is adapted for connection to a discharge tube, such as an IV tube.

Abstract: A drip annunciator comprises a main body and a needle bottle capable of inserting into a drip bottle for outputting liquid. A buoyancy body is received in the needle bottle, which may move with the liquid level. The bottom of the buoyancy body is installed with a magnet and a magnetic sensor on a control rod at the lower side thereof. Thus, as the liquid level within the drip bottle has descended to a predetermined position, the magnet will actuate the magnetic sensor to be electrically conducted, and then the buzzer at another side emits an alarm or lights up an alarm light so inform one to update the liquid therewithin. Meanwhile, a rolling ball will seal the liquid opening to prevent air to flow inwards so as to safeguard the life of a patient. Besides, another soft tube can be disposed between the liquid transferring tube and the needle bottle, and an adjusting wheel and a screw rod screwedly through the central screw hole and having a tightening block are installed aside.

Abstract: A medical dye delivery system includes a medical dye container and a syringe for withdrawing the medical dye from the container and delivering the dye to a patient. A valve is disposed in the system having an inlet in flow communication with the medical dye container and an outlet in flow communication with the syringe. The valve includes a housing defining a flotation chamber with a valve seat and a flotation member disposed therein. The flotation member seals off the valve seat opening upon medical dye depletion, forcing any remaining fluid flow through a bypass channel that provides restricted flow to provide a tactile warning to the operator of the system that the medical dye container is depleted, yet allow the operator to purge remaining dye from the system.

Abstract: An intravenous metering device having automatic stopper comprises a connecting tube that can be inserted into a liquid bottle at one end such that a fluid communication therebetween can be establish. The transfusion tube being connected to a liquid barrel that has a relative larger diameter and is adjacent to the liquid bottle. The liquid barrel serves a buffering device in which the liquid from the bottle is firstly and temporary stored thereof. The second end of the transfusion tube is connected with a catheter that can be punctured into the vein of patient. A regulating device being enveloped onto the transfusion tube at suitable position. Characterized in that the junction between the lower end of the liquid barrel and the upper end of the transfusion tube is formed with a cone-shape recess in which a valve that can be axially engaged thereof is disposed. The valve is floated over the liquid surface of the liquid barrel. The lower end of the valve is provided with a cone-shape stopper.

Abstract: A fluid flow rate control device, especially adapted for controlling the flow of IV fluid to a patient, comprises a first vented fluid chamber having an upper fluid inlet end with a hollow spike which enables fluid connection with a conventional fluid container. A free floating float valve in the first chamber blocks the flow of fluid into the first chamber from the fluid container according to whether or not the fluid level in the first chamber is at a preestablished fluid level, thereby providing a constant pressure head regardless of fluid level in the fluid container. A lower end of the first chamber is connected, through a flow regulator, such as a screw-type valve, to an upper inlet end of a second, vented, drip chamber, the lower end of which is adapted for connection to a discharge tube, such as an IV tube.

Abstract: Disclosed is a flow control device for use with an intravenous set to control the flow of medicinal fluid in a barrel into patient's body. The flow control device comprises a floating member capable of being supported for floating by the buoyancy of the medicinal fluid and having a first hollowed portion facing upwards so that the hollowed portion can contain medicinal fluid and a second hollowed portion facing downwards. A linkage bar is secured to the floating member by insertion into the second hollowed portion. A membranous member is coupled via the linkage bar to the floating member such that the membranous member moves along with the floating member.

Abstract: A gravitational, magnetic, floating ball valve for use in the medical field as a protective fluid cut-off valve when medicine and/or fluids are infused intravenously in patients. The ball valve can be inserted in either an intravenous line, a dosage meter tube or inside an intravenous supply bag and in combinations thereof.

Abstract: A catheter introducing assembly is provided which includes a self-shielding needle while providing captured visual blood flowback. The catheter introducing assembly includes a clear Y-Connector which is used for contrast injection and has an additional port for medication. A V-Spring is placed unrestricted in a spring holder which is attached to the distal end of the Y-Connector. The spring acts as a guard, once the needle is withdrawn, to protect the needle from forward movement. An injection port is provided for high pressure introduction of medication or contrast media. A silicon ball is retained in the injection port which, when medication is required, will reseal after the needle is withdrawn. A luer/filter assembly is provided in fluid communication with the introducer needle to allow air to escape through the filter for visualization of blood flowback upon needle insertion.

Abstract: The invention is directed to an external pump stroke indicator for use with in an implanted medication infusion system of the type having a pump for conveying medication into the patient, an opening covered by a septum is arranged at the output of the pump. The indicator includes a cylinder composed of a transparent material and connectable via its lower end to the opening in an essentially upright attitude, the cylinder being filled with a liquid. A movable sinker member is provided in the cylinder, the movable sinker member normally resting as a result of its weight against a seat provided in the cylinder that limits the motion of the sinker member in the direction of the lower end of the cylinder. The sinker member is composed of a material that has a higher density than that of the liquid, so that the sinker member normally rests against the seat and only moves when pressure elevations that are generated by the pump strokes of the infusion system arise in the liquid.

Abstract: The disclosure is of a suction catheter having a valve body including a vertical plunger in a vertical bore and two horizontal tubes, one for connection to a source of suction and one for connection to a patient. In one position of the plunger, the two tubes are aligned with a path through the plunger to provide suction to the patient. In another position of the plunger, the tube connected to the suction is led to the atmosphere whereby suction is completely removed from the patient.

Abstract: A fluid shut off valve for use in a parenteral fluid administration set includes a disk floating in a fluid chamber that shuts off fluid flow when the fluid in the chamber decreases below a certain level. The chamber includes a valve stem at its lower end that has both a valve seat and an alignment member with an alignment surface on the top end thereof for guiding the disk into proper seating on the valve seat. The valve seat and floating disk have complementary engagement surfaces for also guiding the disk into proper seating on the valve seat. In one embodiment, the alignment member includes fins located both on the valve stem and on the inside wall of the chamber. Because of the configuration of the alignment member, dislodgement of the disk from the valve seat is made easier.

Abstract: A dropper-controller including a reservoir connected with a dropper bottle containing a liquid medicine, and an automatically sealing member formed by a cup-like buoyage and disposed in the reservoir. When the liquid medicine gradually drops from the dropper bottle into the reservoir, the buoyage is buoyed up and automatically open a lower discharging opening of the reservoir, permitting the liquid medicine to flow through a hose to an injection needle for injection. When the liquid medicine in the dropper bottle is about exhausted, the level of the liquid medicine in the reservoir descends, making the buoyage together move downward onto the discharging opening of the reservoir and seal the same so as to interrupt the passage of the liquid medicine.

Abstract: A multiple chamber IV manifold delivery device for controlling infusion of blood, medical drugs or other solutions to a medical patient. The manifold includes a transparent housing defining a set of drip chambers that communicate with a Y-site fluid reservoir that delivers fluid to a conduit line leading to a medical patient. The Y-site reservoir is provided with a flotation check valve. The manifold delivery device is operable to control the order of delivery of at least two fluid solutions from separate supply chambers to a medical patient. The flotation check valve is used to maintain one supply chamber in a sealed condition while another chamber supplies fluid to be administered to a patient. The IV manifold device is provided with exit and entry ports to enable the device to be coupled together with at least two other similarly constructed apparatus to thereby increase the time period for administering drugs of fluids to a medical patient.

Abstract: A dripping apparatus for intravenous administration includes: an intravenous container filled with a medical liquid in the container, a reservoir connected to the intravenous container having a diaphragm formed in a lower portion of the reservoir, a delivery tube connected to the reservoir for directing the medical liquid from the container and the reservoir to an injection needle or cannula into a patient's body through a dripping flow rate adjuster, and a floatable valve slidably held in the diaphragm in the reservoir, in which the valve is operatively floated to open a valve opening in the diaphragm by the liquid in the reservoir for performing the dripping operation and upon an exhausting or empty in the reservoir, the valve will gravitationally descend to close the valve opening for preventing air entrance into the needle and preventing a backflow of a patient's blood to clog the needle.